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bdb7bf8a | 1 | /* Machine description for AArch64 architecture. |
99dee823 | 2 | Copyright (C) 2009-2021 Free Software Foundation, Inc. |
43e9d192 IB |
3 | Contributed by ARM Ltd. |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GCC; see the file COPYING3. If not see | |
19 | <http://www.gnu.org/licenses/>. */ | |
20 | ||
8fcc61f8 RS |
21 | #define IN_TARGET_CODE 1 |
22 | ||
01736018 | 23 | #define INCLUDE_STRING |
83d796d3 RS |
24 | #define INCLUDE_ALGORITHM |
25 | #include "config.h" | |
43e9d192 IB |
26 | #include "system.h" |
27 | #include "coretypes.h" | |
c7131fb2 | 28 | #include "backend.h" |
e11c4407 AM |
29 | #include "target.h" |
30 | #include "rtl.h" | |
c7131fb2 | 31 | #include "tree.h" |
e73cf9a2 | 32 | #include "memmodel.h" |
c7131fb2 | 33 | #include "gimple.h" |
e11c4407 AM |
34 | #include "cfghooks.h" |
35 | #include "cfgloop.h" | |
c7131fb2 | 36 | #include "df.h" |
e11c4407 AM |
37 | #include "tm_p.h" |
38 | #include "stringpool.h" | |
314e6352 | 39 | #include "attribs.h" |
e11c4407 AM |
40 | #include "optabs.h" |
41 | #include "regs.h" | |
42 | #include "emit-rtl.h" | |
43 | #include "recog.h" | |
d9186814 | 44 | #include "cgraph.h" |
e11c4407 | 45 | #include "diagnostic.h" |
43e9d192 | 46 | #include "insn-attr.h" |
40e23961 | 47 | #include "alias.h" |
40e23961 | 48 | #include "fold-const.h" |
d8a2d370 DN |
49 | #include "stor-layout.h" |
50 | #include "calls.h" | |
51 | #include "varasm.h" | |
43e9d192 | 52 | #include "output.h" |
36566b39 | 53 | #include "flags.h" |
36566b39 | 54 | #include "explow.h" |
43e9d192 IB |
55 | #include "expr.h" |
56 | #include "reload.h" | |
43e9d192 | 57 | #include "langhooks.h" |
5a2c8331 | 58 | #include "opts.h" |
45b0be94 | 59 | #include "gimplify.h" |
43e9d192 | 60 | #include "dwarf2.h" |
61d371eb | 61 | #include "gimple-iterator.h" |
8990e73a | 62 | #include "tree-vectorizer.h" |
d1bcc29f | 63 | #include "aarch64-cost-tables.h" |
0ee859b5 | 64 | #include "dumpfile.h" |
9b2b7279 | 65 | #include "builtins.h" |
8baff86e | 66 | #include "rtl-iter.h" |
9bbe08fe | 67 | #include "tm-constrs.h" |
d03f7e44 | 68 | #include "sched-int.h" |
d78006d9 | 69 | #include "target-globals.h" |
a3eb8a52 | 70 | #include "common/common-target.h" |
43cacb12 | 71 | #include "cfgrtl.h" |
51b86113 DM |
72 | #include "selftest.h" |
73 | #include "selftest-rtl.h" | |
43cacb12 | 74 | #include "rtx-vector-builder.h" |
d9186814 | 75 | #include "intl.h" |
7d8bdfa7 | 76 | #include "expmed.h" |
002ffd3c | 77 | #include "function-abi.h" |
1205a8ca RS |
78 | #include "gimple-pretty-print.h" |
79 | #include "tree-ssa-loop-niter.h" | |
83d796d3 | 80 | #include "fractional-cost.h" |
63834c84 | 81 | #include "rtlanal.h" |
526e1639 | 82 | #include "tree-dfa.h" |
43e9d192 | 83 | |
994c5d85 | 84 | /* This file should be included last. */ |
d58627a0 RS |
85 | #include "target-def.h" |
86 | ||
28514dda YZ |
87 | /* Defined for convenience. */ |
88 | #define POINTER_BYTES (POINTER_SIZE / BITS_PER_UNIT) | |
89 | ||
b187677b | 90 | /* Information about a legitimate vector immediate operand. */ |
48063b9d IB |
91 | struct simd_immediate_info |
92 | { | |
0b1fe8cf | 93 | enum insn_type { MOV, MVN, INDEX, PTRUE }; |
b187677b RS |
94 | enum modifier_type { LSL, MSL }; |
95 | ||
96 | simd_immediate_info () {} | |
97 | simd_immediate_info (scalar_float_mode, rtx); | |
98 | simd_immediate_info (scalar_int_mode, unsigned HOST_WIDE_INT, | |
99 | insn_type = MOV, modifier_type = LSL, | |
100 | unsigned int = 0); | |
43cacb12 | 101 | simd_immediate_info (scalar_mode, rtx, rtx); |
0b1fe8cf | 102 | simd_immediate_info (scalar_int_mode, aarch64_svpattern); |
b187677b RS |
103 | |
104 | /* The mode of the elements. */ | |
105 | scalar_mode elt_mode; | |
106 | ||
b187677b RS |
107 | /* The instruction to use to move the immediate into a vector. */ |
108 | insn_type insn; | |
109 | ||
1da83cce RS |
110 | union |
111 | { | |
112 | /* For MOV and MVN. */ | |
113 | struct | |
114 | { | |
115 | /* The value of each element. */ | |
116 | rtx value; | |
117 | ||
118 | /* The kind of shift modifier to use, and the number of bits to shift. | |
119 | This is (LSL, 0) if no shift is needed. */ | |
120 | modifier_type modifier; | |
121 | unsigned int shift; | |
122 | } mov; | |
123 | ||
124 | /* For INDEX. */ | |
125 | struct | |
126 | { | |
127 | /* The value of the first element and the step to be added for each | |
128 | subsequent element. */ | |
129 | rtx base, step; | |
130 | } index; | |
0b1fe8cf RS |
131 | |
132 | /* For PTRUE. */ | |
133 | aarch64_svpattern pattern; | |
1da83cce | 134 | } u; |
48063b9d IB |
135 | }; |
136 | ||
b187677b RS |
137 | /* Construct a floating-point immediate in which each element has mode |
138 | ELT_MODE_IN and value VALUE_IN. */ | |
139 | inline simd_immediate_info | |
140 | ::simd_immediate_info (scalar_float_mode elt_mode_in, rtx value_in) | |
1da83cce RS |
141 | : elt_mode (elt_mode_in), insn (MOV) |
142 | { | |
143 | u.mov.value = value_in; | |
144 | u.mov.modifier = LSL; | |
145 | u.mov.shift = 0; | |
146 | } | |
b187677b RS |
147 | |
148 | /* Construct an integer immediate in which each element has mode ELT_MODE_IN | |
149 | and value VALUE_IN. The other parameters are as for the structure | |
150 | fields. */ | |
151 | inline simd_immediate_info | |
152 | ::simd_immediate_info (scalar_int_mode elt_mode_in, | |
153 | unsigned HOST_WIDE_INT value_in, | |
154 | insn_type insn_in, modifier_type modifier_in, | |
155 | unsigned int shift_in) | |
1da83cce RS |
156 | : elt_mode (elt_mode_in), insn (insn_in) |
157 | { | |
158 | u.mov.value = gen_int_mode (value_in, elt_mode_in); | |
159 | u.mov.modifier = modifier_in; | |
160 | u.mov.shift = shift_in; | |
161 | } | |
43cacb12 RS |
162 | |
163 | /* Construct an integer immediate in which each element has mode ELT_MODE_IN | |
1da83cce | 164 | and where element I is equal to BASE_IN + I * STEP_IN. */ |
43cacb12 | 165 | inline simd_immediate_info |
1da83cce RS |
166 | ::simd_immediate_info (scalar_mode elt_mode_in, rtx base_in, rtx step_in) |
167 | : elt_mode (elt_mode_in), insn (INDEX) | |
168 | { | |
169 | u.index.base = base_in; | |
170 | u.index.step = step_in; | |
171 | } | |
b187677b | 172 | |
0b1fe8cf RS |
173 | /* Construct a predicate that controls elements of mode ELT_MODE_IN |
174 | and has PTRUE pattern PATTERN_IN. */ | |
175 | inline simd_immediate_info | |
176 | ::simd_immediate_info (scalar_int_mode elt_mode_in, | |
177 | aarch64_svpattern pattern_in) | |
178 | : elt_mode (elt_mode_in), insn (PTRUE) | |
179 | { | |
180 | u.pattern = pattern_in; | |
181 | } | |
182 | ||
38e62001 RS |
183 | namespace { |
184 | ||
185 | /* Describes types that map to Pure Scalable Types (PSTs) in the AAPCS64. */ | |
186 | class pure_scalable_type_info | |
187 | { | |
188 | public: | |
189 | /* Represents the result of analyzing a type. All values are nonzero, | |
190 | in the possibly forlorn hope that accidental conversions to bool | |
191 | trigger a warning. */ | |
192 | enum analysis_result | |
193 | { | |
194 | /* The type does not have an ABI identity; i.e. it doesn't contain | |
195 | at least one object whose type is a Fundamental Data Type. */ | |
196 | NO_ABI_IDENTITY = 1, | |
197 | ||
198 | /* The type is definitely a Pure Scalable Type. */ | |
199 | IS_PST, | |
200 | ||
201 | /* The type is definitely not a Pure Scalable Type. */ | |
202 | ISNT_PST, | |
203 | ||
204 | /* It doesn't matter for PCS purposes whether the type is a Pure | |
205 | Scalable Type or not, since the type will be handled the same | |
206 | way regardless. | |
207 | ||
208 | Specifically, this means that if the type is a Pure Scalable Type, | |
209 | there aren't enough argument registers to hold it, and so it will | |
210 | need to be passed or returned in memory. If the type isn't a | |
211 | Pure Scalable Type, it's too big to be passed or returned in core | |
212 | or SIMD&FP registers, and so again will need to go in memory. */ | |
213 | DOESNT_MATTER | |
214 | }; | |
215 | ||
216 | /* Aggregates of 17 bytes or more are normally passed and returned | |
217 | in memory, so aggregates of that size can safely be analyzed as | |
218 | DOESNT_MATTER. We need to be able to collect enough pieces to | |
219 | represent a PST that is smaller than that. Since predicates are | |
220 | 2 bytes in size for -msve-vector-bits=128, that means we need to be | |
221 | able to store at least 8 pieces. | |
222 | ||
223 | We also need to be able to store enough pieces to represent | |
224 | a single vector in each vector argument register and a single | |
225 | predicate in each predicate argument register. This means that | |
226 | we need at least 12 pieces. */ | |
227 | static const unsigned int MAX_PIECES = NUM_FP_ARG_REGS + NUM_PR_ARG_REGS; | |
38e62001 | 228 | static_assert (MAX_PIECES >= 8, "Need to store at least 8 predicates"); |
38e62001 RS |
229 | |
230 | /* Describes one piece of a PST. Each piece is one of: | |
231 | ||
232 | - a single Scalable Vector Type (SVT) | |
233 | - a single Scalable Predicate Type (SPT) | |
234 | - a PST containing 2, 3 or 4 SVTs, with no padding | |
235 | ||
236 | It either represents a single built-in type or a PST formed from | |
237 | multiple homogeneous built-in types. */ | |
238 | struct piece | |
239 | { | |
240 | rtx get_rtx (unsigned int, unsigned int) const; | |
241 | ||
242 | /* The number of vector and predicate registers that the piece | |
243 | occupies. One of the two is always zero. */ | |
244 | unsigned int num_zr; | |
245 | unsigned int num_pr; | |
246 | ||
247 | /* The mode of the registers described above. */ | |
248 | machine_mode mode; | |
249 | ||
250 | /* If this piece is formed from multiple homogeneous built-in types, | |
251 | this is the mode of the built-in types, otherwise it is MODE. */ | |
252 | machine_mode orig_mode; | |
253 | ||
254 | /* The offset in bytes of the piece from the start of the type. */ | |
255 | poly_uint64_pod offset; | |
256 | }; | |
257 | ||
258 | /* Divides types analyzed as IS_PST into individual pieces. The pieces | |
259 | are in memory order. */ | |
260 | auto_vec<piece, MAX_PIECES> pieces; | |
261 | ||
262 | unsigned int num_zr () const; | |
263 | unsigned int num_pr () const; | |
264 | ||
265 | rtx get_rtx (machine_mode mode, unsigned int, unsigned int) const; | |
266 | ||
267 | analysis_result analyze (const_tree); | |
268 | bool analyze_registers (const_tree); | |
269 | ||
270 | private: | |
271 | analysis_result analyze_array (const_tree); | |
272 | analysis_result analyze_record (const_tree); | |
273 | void add_piece (const piece &); | |
274 | }; | |
275 | } | |
276 | ||
43e9d192 IB |
277 | /* The current code model. */ |
278 | enum aarch64_code_model aarch64_cmodel; | |
279 | ||
43cacb12 RS |
280 | /* The number of 64-bit elements in an SVE vector. */ |
281 | poly_uint16 aarch64_sve_vg; | |
282 | ||
43e9d192 IB |
283 | #ifdef HAVE_AS_TLS |
284 | #undef TARGET_HAVE_TLS | |
285 | #define TARGET_HAVE_TLS 1 | |
286 | #endif | |
287 | ||
ef4bddc2 | 288 | static bool aarch64_composite_type_p (const_tree, machine_mode); |
38e62001 | 289 | static bool aarch64_return_in_memory_1 (const_tree); |
ef4bddc2 | 290 | static bool aarch64_vfp_is_call_or_return_candidate (machine_mode, |
43e9d192 | 291 | const_tree, |
ef4bddc2 | 292 | machine_mode *, int *, |
56fe3ca3 | 293 | bool *, bool); |
43e9d192 IB |
294 | static void aarch64_elf_asm_constructor (rtx, int) ATTRIBUTE_UNUSED; |
295 | static void aarch64_elf_asm_destructor (rtx, int) ATTRIBUTE_UNUSED; | |
43e9d192 | 296 | static void aarch64_override_options_after_change (void); |
ef4bddc2 | 297 | static bool aarch64_vector_mode_supported_p (machine_mode); |
ef4bddc2 | 298 | static int aarch64_address_cost (rtx, machine_mode, addr_space_t, bool); |
7df76747 N |
299 | static bool aarch64_builtin_support_vector_misalignment (machine_mode mode, |
300 | const_tree type, | |
301 | int misalignment, | |
302 | bool is_packed); | |
43cacb12 | 303 | static machine_mode aarch64_simd_container_mode (scalar_mode, poly_int64); |
a25831ac AV |
304 | static bool aarch64_print_address_internal (FILE*, machine_mode, rtx, |
305 | aarch64_addr_query_type); | |
eb471ba3 | 306 | static HOST_WIDE_INT aarch64_clamp_to_uimm12_shift (HOST_WIDE_INT val); |
88b08073 | 307 | |
0c6caaf8 RL |
308 | /* Major revision number of the ARM Architecture implemented by the target. */ |
309 | unsigned aarch64_architecture_version; | |
310 | ||
43e9d192 | 311 | /* The processor for which instructions should be scheduled. */ |
02fdbd5b | 312 | enum aarch64_processor aarch64_tune = cortexa53; |
43e9d192 | 313 | |
43e9d192 | 314 | /* Mask to specify which instruction scheduling options should be used. */ |
28108a53 | 315 | uint64_t aarch64_tune_flags = 0; |
43e9d192 | 316 | |
1be34295 | 317 | /* Global flag for PC relative loads. */ |
9ee6540a | 318 | bool aarch64_pcrelative_literal_loads; |
1be34295 | 319 | |
d6cb6d6a WD |
320 | /* Global flag for whether frame pointer is enabled. */ |
321 | bool aarch64_use_frame_pointer; | |
322 | ||
efac62a3 ST |
323 | #define BRANCH_PROTECT_STR_MAX 255 |
324 | char *accepted_branch_protection_string = NULL; | |
325 | ||
326 | static enum aarch64_parse_opt_result | |
327 | aarch64_parse_branch_protection (const char*, char**); | |
328 | ||
8dec06f2 JG |
329 | /* Support for command line parsing of boolean flags in the tuning |
330 | structures. */ | |
331 | struct aarch64_flag_desc | |
332 | { | |
333 | const char* name; | |
334 | unsigned int flag; | |
335 | }; | |
336 | ||
ed9fa8d2 | 337 | #define AARCH64_FUSION_PAIR(name, internal_name) \ |
8dec06f2 JG |
338 | { name, AARCH64_FUSE_##internal_name }, |
339 | static const struct aarch64_flag_desc aarch64_fusible_pairs[] = | |
340 | { | |
341 | { "none", AARCH64_FUSE_NOTHING }, | |
342 | #include "aarch64-fusion-pairs.def" | |
343 | { "all", AARCH64_FUSE_ALL }, | |
344 | { NULL, AARCH64_FUSE_NOTHING } | |
345 | }; | |
8dec06f2 | 346 | |
a339a01c | 347 | #define AARCH64_EXTRA_TUNING_OPTION(name, internal_name) \ |
8dec06f2 JG |
348 | { name, AARCH64_EXTRA_TUNE_##internal_name }, |
349 | static const struct aarch64_flag_desc aarch64_tuning_flags[] = | |
350 | { | |
351 | { "none", AARCH64_EXTRA_TUNE_NONE }, | |
352 | #include "aarch64-tuning-flags.def" | |
353 | { "all", AARCH64_EXTRA_TUNE_ALL }, | |
354 | { NULL, AARCH64_EXTRA_TUNE_NONE } | |
355 | }; | |
8dec06f2 | 356 | |
43e9d192 IB |
357 | /* Tuning parameters. */ |
358 | ||
43e9d192 IB |
359 | static const struct cpu_addrcost_table generic_addrcost_table = |
360 | { | |
67747367 | 361 | { |
2fae724a | 362 | 1, /* hi */ |
bd95e655 JG |
363 | 0, /* si */ |
364 | 0, /* di */ | |
2fae724a | 365 | 1, /* ti */ |
67747367 | 366 | }, |
bd95e655 JG |
367 | 0, /* pre_modify */ |
368 | 0, /* post_modify */ | |
6b8b0c8e RS |
369 | 0, /* post_modify_ld3_st3 */ |
370 | 0, /* post_modify_ld4_st4 */ | |
bd95e655 | 371 | 0, /* register_offset */ |
783879e6 EM |
372 | 0, /* register_sextend */ |
373 | 0, /* register_zextend */ | |
bd95e655 | 374 | 0 /* imm_offset */ |
43e9d192 IB |
375 | }; |
376 | ||
5ec1ae3b EM |
377 | static const struct cpu_addrcost_table exynosm1_addrcost_table = |
378 | { | |
379 | { | |
380 | 0, /* hi */ | |
381 | 0, /* si */ | |
382 | 0, /* di */ | |
383 | 2, /* ti */ | |
384 | }, | |
385 | 0, /* pre_modify */ | |
386 | 0, /* post_modify */ | |
6b8b0c8e RS |
387 | 0, /* post_modify_ld3_st3 */ |
388 | 0, /* post_modify_ld4_st4 */ | |
5ec1ae3b EM |
389 | 1, /* register_offset */ |
390 | 1, /* register_sextend */ | |
391 | 2, /* register_zextend */ | |
392 | 0, /* imm_offset */ | |
393 | }; | |
394 | ||
381e27aa PT |
395 | static const struct cpu_addrcost_table xgene1_addrcost_table = |
396 | { | |
381e27aa | 397 | { |
bd95e655 JG |
398 | 1, /* hi */ |
399 | 0, /* si */ | |
400 | 0, /* di */ | |
401 | 1, /* ti */ | |
381e27aa | 402 | }, |
bd95e655 | 403 | 1, /* pre_modify */ |
52ddefd8 | 404 | 1, /* post_modify */ |
6b8b0c8e RS |
405 | 1, /* post_modify_ld3_st3 */ |
406 | 1, /* post_modify_ld4_st4 */ | |
bd95e655 | 407 | 0, /* register_offset */ |
783879e6 EM |
408 | 1, /* register_sextend */ |
409 | 1, /* register_zextend */ | |
bd95e655 | 410 | 0, /* imm_offset */ |
381e27aa PT |
411 | }; |
412 | ||
d1261ac6 | 413 | static const struct cpu_addrcost_table thunderx2t99_addrcost_table = |
ad611a4c VP |
414 | { |
415 | { | |
5f407e57 AP |
416 | 1, /* hi */ |
417 | 1, /* si */ | |
418 | 1, /* di */ | |
ad611a4c VP |
419 | 2, /* ti */ |
420 | }, | |
421 | 0, /* pre_modify */ | |
422 | 0, /* post_modify */ | |
6b8b0c8e RS |
423 | 0, /* post_modify_ld3_st3 */ |
424 | 0, /* post_modify_ld4_st4 */ | |
ad611a4c VP |
425 | 2, /* register_offset */ |
426 | 3, /* register_sextend */ | |
427 | 3, /* register_zextend */ | |
428 | 0, /* imm_offset */ | |
429 | }; | |
430 | ||
fa477e45 AY |
431 | static const struct cpu_addrcost_table thunderx3t110_addrcost_table = |
432 | { | |
433 | { | |
434 | 1, /* hi */ | |
435 | 1, /* si */ | |
436 | 1, /* di */ | |
437 | 2, /* ti */ | |
438 | }, | |
439 | 0, /* pre_modify */ | |
440 | 0, /* post_modify */ | |
6b8b0c8e RS |
441 | 0, /* post_modify_ld3_st3 */ |
442 | 0, /* post_modify_ld4_st4 */ | |
fa477e45 AY |
443 | 2, /* register_offset */ |
444 | 3, /* register_sextend */ | |
445 | 3, /* register_zextend */ | |
446 | 0, /* imm_offset */ | |
447 | }; | |
448 | ||
910f72e7 SZ |
449 | static const struct cpu_addrcost_table tsv110_addrcost_table = |
450 | { | |
451 | { | |
452 | 1, /* hi */ | |
453 | 0, /* si */ | |
454 | 0, /* di */ | |
455 | 1, /* ti */ | |
456 | }, | |
457 | 0, /* pre_modify */ | |
458 | 0, /* post_modify */ | |
6b8b0c8e RS |
459 | 0, /* post_modify_ld3_st3 */ |
460 | 0, /* post_modify_ld4_st4 */ | |
910f72e7 SZ |
461 | 0, /* register_offset */ |
462 | 1, /* register_sextend */ | |
463 | 1, /* register_zextend */ | |
464 | 0, /* imm_offset */ | |
465 | }; | |
466 | ||
8d39ea2f LM |
467 | static const struct cpu_addrcost_table qdf24xx_addrcost_table = |
468 | { | |
469 | { | |
470 | 1, /* hi */ | |
471 | 1, /* si */ | |
472 | 1, /* di */ | |
473 | 2, /* ti */ | |
474 | }, | |
475 | 1, /* pre_modify */ | |
476 | 1, /* post_modify */ | |
6b8b0c8e RS |
477 | 1, /* post_modify_ld3_st3 */ |
478 | 1, /* post_modify_ld4_st4 */ | |
8d39ea2f | 479 | 3, /* register_offset */ |
31508b39 | 480 | 3, /* register_sextend */ |
8d39ea2f LM |
481 | 3, /* register_zextend */ |
482 | 2, /* imm_offset */ | |
483 | }; | |
484 | ||
3f325179 QJ |
485 | static const struct cpu_addrcost_table a64fx_addrcost_table = |
486 | { | |
487 | { | |
488 | 1, /* hi */ | |
489 | 1, /* si */ | |
490 | 1, /* di */ | |
491 | 2, /* ti */ | |
492 | }, | |
493 | 0, /* pre_modify */ | |
494 | 0, /* post_modify */ | |
6b8b0c8e RS |
495 | 0, /* post_modify_ld3_st3 */ |
496 | 0, /* post_modify_ld4_st4 */ | |
3f325179 QJ |
497 | 2, /* register_offset */ |
498 | 3, /* register_sextend */ | |
499 | 3, /* register_zextend */ | |
500 | 0, /* imm_offset */ | |
501 | }; | |
502 | ||
6b8b0c8e RS |
503 | static const struct cpu_addrcost_table neoversev1_addrcost_table = |
504 | { | |
505 | { | |
506 | 1, /* hi */ | |
507 | 0, /* si */ | |
508 | 0, /* di */ | |
509 | 1, /* ti */ | |
510 | }, | |
511 | 0, /* pre_modify */ | |
512 | 0, /* post_modify */ | |
513 | 3, /* post_modify_ld3_st3 */ | |
514 | 3, /* post_modify_ld4_st4 */ | |
515 | 0, /* register_offset */ | |
516 | 0, /* register_sextend */ | |
517 | 0, /* register_zextend */ | |
518 | 0 /* imm_offset */ | |
519 | }; | |
520 | ||
43e9d192 IB |
521 | static const struct cpu_regmove_cost generic_regmove_cost = |
522 | { | |
bd95e655 | 523 | 1, /* GP2GP */ |
3969c510 WD |
524 | /* Avoid the use of slow int<->fp moves for spilling by setting |
525 | their cost higher than memmov_cost. */ | |
bd95e655 JG |
526 | 5, /* GP2FP */ |
527 | 5, /* FP2GP */ | |
528 | 2 /* FP2FP */ | |
43e9d192 IB |
529 | }; |
530 | ||
e4a9c55a WD |
531 | static const struct cpu_regmove_cost cortexa57_regmove_cost = |
532 | { | |
bd95e655 | 533 | 1, /* GP2GP */ |
e4a9c55a WD |
534 | /* Avoid the use of slow int<->fp moves for spilling by setting |
535 | their cost higher than memmov_cost. */ | |
bd95e655 JG |
536 | 5, /* GP2FP */ |
537 | 5, /* FP2GP */ | |
538 | 2 /* FP2FP */ | |
e4a9c55a WD |
539 | }; |
540 | ||
541 | static const struct cpu_regmove_cost cortexa53_regmove_cost = | |
542 | { | |
bd95e655 | 543 | 1, /* GP2GP */ |
e4a9c55a WD |
544 | /* Avoid the use of slow int<->fp moves for spilling by setting |
545 | their cost higher than memmov_cost. */ | |
bd95e655 JG |
546 | 5, /* GP2FP */ |
547 | 5, /* FP2GP */ | |
548 | 2 /* FP2FP */ | |
e4a9c55a WD |
549 | }; |
550 | ||
5ec1ae3b EM |
551 | static const struct cpu_regmove_cost exynosm1_regmove_cost = |
552 | { | |
553 | 1, /* GP2GP */ | |
554 | /* Avoid the use of slow int<->fp moves for spilling by setting | |
555 | their cost higher than memmov_cost (actual, 4 and 9). */ | |
556 | 9, /* GP2FP */ | |
557 | 9, /* FP2GP */ | |
558 | 1 /* FP2FP */ | |
559 | }; | |
560 | ||
d1bcc29f AP |
561 | static const struct cpu_regmove_cost thunderx_regmove_cost = |
562 | { | |
bd95e655 JG |
563 | 2, /* GP2GP */ |
564 | 2, /* GP2FP */ | |
565 | 6, /* FP2GP */ | |
566 | 4 /* FP2FP */ | |
d1bcc29f AP |
567 | }; |
568 | ||
381e27aa PT |
569 | static const struct cpu_regmove_cost xgene1_regmove_cost = |
570 | { | |
bd95e655 | 571 | 1, /* GP2GP */ |
381e27aa PT |
572 | /* Avoid the use of slow int<->fp moves for spilling by setting |
573 | their cost higher than memmov_cost. */ | |
bd95e655 JG |
574 | 8, /* GP2FP */ |
575 | 8, /* FP2GP */ | |
576 | 2 /* FP2FP */ | |
381e27aa PT |
577 | }; |
578 | ||
ee446d9f JW |
579 | static const struct cpu_regmove_cost qdf24xx_regmove_cost = |
580 | { | |
581 | 2, /* GP2GP */ | |
582 | /* Avoid the use of int<->fp moves for spilling. */ | |
583 | 6, /* GP2FP */ | |
584 | 6, /* FP2GP */ | |
585 | 4 /* FP2FP */ | |
586 | }; | |
587 | ||
d1261ac6 | 588 | static const struct cpu_regmove_cost thunderx2t99_regmove_cost = |
ad611a4c VP |
589 | { |
590 | 1, /* GP2GP */ | |
591 | /* Avoid the use of int<->fp moves for spilling. */ | |
2aeccecb AY |
592 | 5, /* GP2FP */ |
593 | 6, /* FP2GP */ | |
594 | 3, /* FP2FP */ | |
ad611a4c VP |
595 | }; |
596 | ||
fa477e45 AY |
597 | static const struct cpu_regmove_cost thunderx3t110_regmove_cost = |
598 | { | |
599 | 1, /* GP2GP */ | |
600 | /* Avoid the use of int<->fp moves for spilling. */ | |
601 | 4, /* GP2FP */ | |
602 | 5, /* FP2GP */ | |
603 | 4 /* FP2FP */ | |
604 | }; | |
605 | ||
910f72e7 SZ |
606 | static const struct cpu_regmove_cost tsv110_regmove_cost = |
607 | { | |
608 | 1, /* GP2GP */ | |
609 | /* Avoid the use of slow int<->fp moves for spilling by setting | |
610 | their cost higher than memmov_cost. */ | |
611 | 2, /* GP2FP */ | |
612 | 3, /* FP2GP */ | |
613 | 2 /* FP2FP */ | |
614 | }; | |
615 | ||
3f325179 QJ |
616 | static const struct cpu_regmove_cost a64fx_regmove_cost = |
617 | { | |
618 | 1, /* GP2GP */ | |
619 | /* Avoid the use of slow int<->fp moves for spilling by setting | |
620 | their cost higher than memmov_cost. */ | |
621 | 5, /* GP2FP */ | |
622 | 7, /* FP2GP */ | |
623 | 2 /* FP2FP */ | |
624 | }; | |
625 | ||
76e4f444 KT |
626 | /* Generic costs for Advanced SIMD vector operations. */ |
627 | static const advsimd_vec_cost generic_advsimd_vector_cost = | |
628 | { | |
629 | 1, /* int_stmt_cost */ | |
630 | 1, /* fp_stmt_cost */ | |
b1a831f0 RS |
631 | 0, /* ld2_st2_permute_cost */ |
632 | 0, /* ld3_st3_permute_cost */ | |
633 | 0, /* ld4_st4_permute_cost */ | |
76e4f444 | 634 | 2, /* permute_cost */ |
e253bb8b RS |
635 | 2, /* reduc_i8_cost */ |
636 | 2, /* reduc_i16_cost */ | |
637 | 2, /* reduc_i32_cost */ | |
638 | 2, /* reduc_i64_cost */ | |
639 | 2, /* reduc_f16_cost */ | |
640 | 2, /* reduc_f32_cost */ | |
641 | 2, /* reduc_f64_cost */ | |
d1ff0847 | 642 | 2, /* store_elt_extra_cost */ |
76e4f444 KT |
643 | 2, /* vec_to_scalar_cost */ |
644 | 1, /* scalar_to_vec_cost */ | |
645 | 1, /* align_load_cost */ | |
646 | 1, /* unalign_load_cost */ | |
647 | 1, /* unalign_store_cost */ | |
648 | 1 /* store_cost */ | |
649 | }; | |
650 | ||
651 | /* Generic costs for SVE vector operations. */ | |
652 | static const sve_vec_cost generic_sve_vector_cost = | |
653 | { | |
1282988b RS |
654 | { |
655 | 1, /* int_stmt_cost */ | |
656 | 1, /* fp_stmt_cost */ | |
b1a831f0 RS |
657 | 0, /* ld2_st2_permute_cost */ |
658 | 0, /* ld3_st3_permute_cost */ | |
659 | 0, /* ld4_st4_permute_cost */ | |
1282988b RS |
660 | 2, /* permute_cost */ |
661 | 2, /* reduc_i8_cost */ | |
662 | 2, /* reduc_i16_cost */ | |
663 | 2, /* reduc_i32_cost */ | |
664 | 2, /* reduc_i64_cost */ | |
665 | 2, /* reduc_f16_cost */ | |
666 | 2, /* reduc_f32_cost */ | |
667 | 2, /* reduc_f64_cost */ | |
d1ff0847 | 668 | 2, /* store_elt_extra_cost */ |
1282988b RS |
669 | 2, /* vec_to_scalar_cost */ |
670 | 1, /* scalar_to_vec_cost */ | |
671 | 1, /* align_load_cost */ | |
672 | 1, /* unalign_load_cost */ | |
673 | 1, /* unalign_store_cost */ | |
674 | 1 /* store_cost */ | |
675 | }, | |
676 | 2, /* clast_cost */ | |
677 | 2, /* fadda_f16_cost */ | |
678 | 2, /* fadda_f32_cost */ | |
7c679969 | 679 | 2, /* fadda_f64_cost */ |
78770e0e RS |
680 | 4, /* gather_load_x32_cost */ |
681 | 2, /* gather_load_x64_cost */ | |
7c679969 | 682 | 1 /* scatter_store_elt_cost */ |
76e4f444 KT |
683 | }; |
684 | ||
8990e73a | 685 | /* Generic costs for vector insn classes. */ |
8990e73a TB |
686 | static const struct cpu_vector_cost generic_vector_cost = |
687 | { | |
cd8ae5ed AP |
688 | 1, /* scalar_int_stmt_cost */ |
689 | 1, /* scalar_fp_stmt_cost */ | |
bd95e655 JG |
690 | 1, /* scalar_load_cost */ |
691 | 1, /* scalar_store_cost */ | |
bd95e655 | 692 | 3, /* cond_taken_branch_cost */ |
76e4f444 KT |
693 | 1, /* cond_not_taken_branch_cost */ |
694 | &generic_advsimd_vector_cost, /* advsimd */ | |
1205a8ca RS |
695 | &generic_sve_vector_cost, /* sve */ |
696 | nullptr /* issue_info */ | |
76e4f444 KT |
697 | }; |
698 | ||
3f325179 QJ |
699 | static const advsimd_vec_cost a64fx_advsimd_vector_cost = |
700 | { | |
701 | 2, /* int_stmt_cost */ | |
702 | 5, /* fp_stmt_cost */ | |
b1a831f0 RS |
703 | 0, /* ld2_st2_permute_cost */ |
704 | 0, /* ld3_st3_permute_cost */ | |
705 | 0, /* ld4_st4_permute_cost */ | |
3f325179 | 706 | 3, /* permute_cost */ |
e253bb8b RS |
707 | 13, /* reduc_i8_cost */ |
708 | 13, /* reduc_i16_cost */ | |
709 | 13, /* reduc_i32_cost */ | |
710 | 13, /* reduc_i64_cost */ | |
711 | 13, /* reduc_f16_cost */ | |
712 | 13, /* reduc_f32_cost */ | |
713 | 13, /* reduc_f64_cost */ | |
d1ff0847 | 714 | 13, /* store_elt_extra_cost */ |
3f325179 QJ |
715 | 13, /* vec_to_scalar_cost */ |
716 | 4, /* scalar_to_vec_cost */ | |
717 | 6, /* align_load_cost */ | |
718 | 6, /* unalign_load_cost */ | |
719 | 1, /* unalign_store_cost */ | |
720 | 1 /* store_cost */ | |
721 | }; | |
722 | ||
723 | static const sve_vec_cost a64fx_sve_vector_cost = | |
724 | { | |
1282988b RS |
725 | { |
726 | 2, /* int_stmt_cost */ | |
727 | 5, /* fp_stmt_cost */ | |
b1a831f0 RS |
728 | 0, /* ld2_st2_permute_cost */ |
729 | 0, /* ld3_st3_permute_cost */ | |
730 | 0, /* ld4_st4_permute_cost */ | |
1282988b RS |
731 | 3, /* permute_cost */ |
732 | 13, /* reduc_i8_cost */ | |
733 | 13, /* reduc_i16_cost */ | |
734 | 13, /* reduc_i32_cost */ | |
735 | 13, /* reduc_i64_cost */ | |
736 | 13, /* reduc_f16_cost */ | |
737 | 13, /* reduc_f32_cost */ | |
738 | 13, /* reduc_f64_cost */ | |
d1ff0847 | 739 | 13, /* store_elt_extra_cost */ |
1282988b RS |
740 | 13, /* vec_to_scalar_cost */ |
741 | 4, /* scalar_to_vec_cost */ | |
742 | 6, /* align_load_cost */ | |
743 | 6, /* unalign_load_cost */ | |
744 | 1, /* unalign_store_cost */ | |
745 | 1 /* store_cost */ | |
746 | }, | |
747 | 13, /* clast_cost */ | |
748 | 13, /* fadda_f16_cost */ | |
749 | 13, /* fadda_f32_cost */ | |
7c679969 | 750 | 13, /* fadda_f64_cost */ |
78770e0e RS |
751 | 64, /* gather_load_x32_cost */ |
752 | 32, /* gather_load_x64_cost */ | |
7c679969 | 753 | 1 /* scatter_store_elt_cost */ |
3f325179 QJ |
754 | }; |
755 | ||
756 | static const struct cpu_vector_cost a64fx_vector_cost = | |
757 | { | |
758 | 1, /* scalar_int_stmt_cost */ | |
759 | 5, /* scalar_fp_stmt_cost */ | |
760 | 4, /* scalar_load_cost */ | |
761 | 1, /* scalar_store_cost */ | |
762 | 3, /* cond_taken_branch_cost */ | |
763 | 1, /* cond_not_taken_branch_cost */ | |
764 | &a64fx_advsimd_vector_cost, /* advsimd */ | |
1205a8ca RS |
765 | &a64fx_sve_vector_cost, /* sve */ |
766 | nullptr /* issue_info */ | |
3f325179 QJ |
767 | }; |
768 | ||
76e4f444 KT |
769 | static const advsimd_vec_cost qdf24xx_advsimd_vector_cost = |
770 | { | |
771 | 1, /* int_stmt_cost */ | |
772 | 3, /* fp_stmt_cost */ | |
b1a831f0 RS |
773 | 0, /* ld2_st2_permute_cost */ |
774 | 0, /* ld3_st3_permute_cost */ | |
775 | 0, /* ld4_st4_permute_cost */ | |
76e4f444 | 776 | 2, /* permute_cost */ |
e253bb8b RS |
777 | 1, /* reduc_i8_cost */ |
778 | 1, /* reduc_i16_cost */ | |
779 | 1, /* reduc_i32_cost */ | |
780 | 1, /* reduc_i64_cost */ | |
781 | 1, /* reduc_f16_cost */ | |
782 | 1, /* reduc_f32_cost */ | |
783 | 1, /* reduc_f64_cost */ | |
d1ff0847 | 784 | 1, /* store_elt_extra_cost */ |
76e4f444 KT |
785 | 1, /* vec_to_scalar_cost */ |
786 | 1, /* scalar_to_vec_cost */ | |
787 | 1, /* align_load_cost */ | |
788 | 1, /* unalign_load_cost */ | |
789 | 1, /* unalign_store_cost */ | |
790 | 1 /* store_cost */ | |
8990e73a TB |
791 | }; |
792 | ||
e75bc10e LM |
793 | /* QDF24XX costs for vector insn classes. */ |
794 | static const struct cpu_vector_cost qdf24xx_vector_cost = | |
795 | { | |
796 | 1, /* scalar_int_stmt_cost */ | |
797 | 1, /* scalar_fp_stmt_cost */ | |
798 | 1, /* scalar_load_cost */ | |
799 | 1, /* scalar_store_cost */ | |
e75bc10e | 800 | 3, /* cond_taken_branch_cost */ |
76e4f444 KT |
801 | 1, /* cond_not_taken_branch_cost */ |
802 | &qdf24xx_advsimd_vector_cost, /* advsimd */ | |
1205a8ca RS |
803 | nullptr, /* sve */ |
804 | nullptr /* issue_info */ | |
76e4f444 KT |
805 | }; |
806 | ||
807 | ||
808 | static const advsimd_vec_cost thunderx_advsimd_vector_cost = | |
809 | { | |
810 | 4, /* int_stmt_cost */ | |
811 | 1, /* fp_stmt_cost */ | |
b1a831f0 RS |
812 | 0, /* ld2_st2_permute_cost */ |
813 | 0, /* ld3_st3_permute_cost */ | |
814 | 0, /* ld4_st4_permute_cost */ | |
76e4f444 | 815 | 4, /* permute_cost */ |
e253bb8b RS |
816 | 2, /* reduc_i8_cost */ |
817 | 2, /* reduc_i16_cost */ | |
818 | 2, /* reduc_i32_cost */ | |
819 | 2, /* reduc_i64_cost */ | |
820 | 2, /* reduc_f16_cost */ | |
821 | 2, /* reduc_f32_cost */ | |
822 | 2, /* reduc_f64_cost */ | |
d1ff0847 | 823 | 2, /* store_elt_extra_cost */ |
76e4f444 KT |
824 | 2, /* vec_to_scalar_cost */ |
825 | 2, /* scalar_to_vec_cost */ | |
826 | 3, /* align_load_cost */ | |
827 | 5, /* unalign_load_cost */ | |
828 | 5, /* unalign_store_cost */ | |
829 | 1 /* store_cost */ | |
e75bc10e LM |
830 | }; |
831 | ||
c3f20327 AP |
832 | /* ThunderX costs for vector insn classes. */ |
833 | static const struct cpu_vector_cost thunderx_vector_cost = | |
834 | { | |
cd8ae5ed AP |
835 | 1, /* scalar_int_stmt_cost */ |
836 | 1, /* scalar_fp_stmt_cost */ | |
c3f20327 AP |
837 | 3, /* scalar_load_cost */ |
838 | 1, /* scalar_store_cost */ | |
c3f20327 | 839 | 3, /* cond_taken_branch_cost */ |
76e4f444 KT |
840 | 3, /* cond_not_taken_branch_cost */ |
841 | &thunderx_advsimd_vector_cost, /* advsimd */ | |
1205a8ca RS |
842 | nullptr, /* sve */ |
843 | nullptr /* issue_info */ | |
76e4f444 KT |
844 | }; |
845 | ||
846 | static const advsimd_vec_cost tsv110_advsimd_vector_cost = | |
847 | { | |
848 | 2, /* int_stmt_cost */ | |
849 | 2, /* fp_stmt_cost */ | |
b1a831f0 RS |
850 | 0, /* ld2_st2_permute_cost */ |
851 | 0, /* ld3_st3_permute_cost */ | |
852 | 0, /* ld4_st4_permute_cost */ | |
76e4f444 | 853 | 2, /* permute_cost */ |
e253bb8b RS |
854 | 3, /* reduc_i8_cost */ |
855 | 3, /* reduc_i16_cost */ | |
856 | 3, /* reduc_i32_cost */ | |
857 | 3, /* reduc_i64_cost */ | |
858 | 3, /* reduc_f16_cost */ | |
859 | 3, /* reduc_f32_cost */ | |
860 | 3, /* reduc_f64_cost */ | |
d1ff0847 | 861 | 3, /* store_elt_extra_cost */ |
76e4f444 KT |
862 | 3, /* vec_to_scalar_cost */ |
863 | 2, /* scalar_to_vec_cost */ | |
864 | 5, /* align_load_cost */ | |
865 | 5, /* unalign_load_cost */ | |
866 | 1, /* unalign_store_cost */ | |
867 | 1 /* store_cost */ | |
c3f20327 AP |
868 | }; |
869 | ||
910f72e7 SZ |
870 | static const struct cpu_vector_cost tsv110_vector_cost = |
871 | { | |
872 | 1, /* scalar_int_stmt_cost */ | |
873 | 1, /* scalar_fp_stmt_cost */ | |
874 | 5, /* scalar_load_cost */ | |
875 | 1, /* scalar_store_cost */ | |
910f72e7 | 876 | 1, /* cond_taken_branch_cost */ |
76e4f444 KT |
877 | 1, /* cond_not_taken_branch_cost */ |
878 | &tsv110_advsimd_vector_cost, /* advsimd */ | |
1205a8ca RS |
879 | nullptr, /* sve */ |
880 | nullptr /* issue_info */ | |
910f72e7 SZ |
881 | }; |
882 | ||
76e4f444 KT |
883 | static const advsimd_vec_cost cortexa57_advsimd_vector_cost = |
884 | { | |
885 | 2, /* int_stmt_cost */ | |
886 | 2, /* fp_stmt_cost */ | |
b1a831f0 RS |
887 | 0, /* ld2_st2_permute_cost */ |
888 | 0, /* ld3_st3_permute_cost */ | |
889 | 0, /* ld4_st4_permute_cost */ | |
76e4f444 | 890 | 3, /* permute_cost */ |
e253bb8b RS |
891 | 8, /* reduc_i8_cost */ |
892 | 8, /* reduc_i16_cost */ | |
893 | 8, /* reduc_i32_cost */ | |
894 | 8, /* reduc_i64_cost */ | |
895 | 8, /* reduc_f16_cost */ | |
896 | 8, /* reduc_f32_cost */ | |
897 | 8, /* reduc_f64_cost */ | |
d1ff0847 | 898 | 8, /* store_elt_extra_cost */ |
76e4f444 KT |
899 | 8, /* vec_to_scalar_cost */ |
900 | 8, /* scalar_to_vec_cost */ | |
901 | 4, /* align_load_cost */ | |
902 | 4, /* unalign_load_cost */ | |
903 | 1, /* unalign_store_cost */ | |
904 | 1 /* store_cost */ | |
905 | }; | |
906 | ||
907 | /* Cortex-A57 costs for vector insn classes. */ | |
60bff090 JG |
908 | static const struct cpu_vector_cost cortexa57_vector_cost = |
909 | { | |
cd8ae5ed AP |
910 | 1, /* scalar_int_stmt_cost */ |
911 | 1, /* scalar_fp_stmt_cost */ | |
bd95e655 JG |
912 | 4, /* scalar_load_cost */ |
913 | 1, /* scalar_store_cost */ | |
bd95e655 | 914 | 1, /* cond_taken_branch_cost */ |
76e4f444 KT |
915 | 1, /* cond_not_taken_branch_cost */ |
916 | &cortexa57_advsimd_vector_cost, /* advsimd */ | |
1205a8ca RS |
917 | nullptr, /* sve */ |
918 | nullptr /* issue_info */ | |
76e4f444 KT |
919 | }; |
920 | ||
921 | static const advsimd_vec_cost exynosm1_advsimd_vector_cost = | |
922 | { | |
923 | 3, /* int_stmt_cost */ | |
924 | 3, /* fp_stmt_cost */ | |
b1a831f0 RS |
925 | 0, /* ld2_st2_permute_cost */ |
926 | 0, /* ld3_st3_permute_cost */ | |
927 | 0, /* ld4_st4_permute_cost */ | |
76e4f444 | 928 | 3, /* permute_cost */ |
e253bb8b RS |
929 | 3, /* reduc_i8_cost */ |
930 | 3, /* reduc_i16_cost */ | |
931 | 3, /* reduc_i32_cost */ | |
932 | 3, /* reduc_i64_cost */ | |
933 | 3, /* reduc_f16_cost */ | |
934 | 3, /* reduc_f32_cost */ | |
935 | 3, /* reduc_f64_cost */ | |
d1ff0847 | 936 | 3, /* store_elt_extra_cost */ |
76e4f444 KT |
937 | 3, /* vec_to_scalar_cost */ |
938 | 3, /* scalar_to_vec_cost */ | |
939 | 5, /* align_load_cost */ | |
940 | 5, /* unalign_load_cost */ | |
941 | 1, /* unalign_store_cost */ | |
942 | 1 /* store_cost */ | |
60bff090 JG |
943 | }; |
944 | ||
5ec1ae3b EM |
945 | static const struct cpu_vector_cost exynosm1_vector_cost = |
946 | { | |
cd8ae5ed AP |
947 | 1, /* scalar_int_stmt_cost */ |
948 | 1, /* scalar_fp_stmt_cost */ | |
5ec1ae3b EM |
949 | 5, /* scalar_load_cost */ |
950 | 1, /* scalar_store_cost */ | |
5ec1ae3b | 951 | 1, /* cond_taken_branch_cost */ |
76e4f444 KT |
952 | 1, /* cond_not_taken_branch_cost */ |
953 | &exynosm1_advsimd_vector_cost, /* advsimd */ | |
1205a8ca RS |
954 | nullptr, /* sve */ |
955 | nullptr /* issue_info */ | |
76e4f444 KT |
956 | }; |
957 | ||
958 | static const advsimd_vec_cost xgene1_advsimd_vector_cost = | |
959 | { | |
960 | 2, /* int_stmt_cost */ | |
961 | 2, /* fp_stmt_cost */ | |
b1a831f0 RS |
962 | 0, /* ld2_st2_permute_cost */ |
963 | 0, /* ld3_st3_permute_cost */ | |
964 | 0, /* ld4_st4_permute_cost */ | |
76e4f444 | 965 | 2, /* permute_cost */ |
e253bb8b RS |
966 | 4, /* reduc_i8_cost */ |
967 | 4, /* reduc_i16_cost */ | |
968 | 4, /* reduc_i32_cost */ | |
969 | 4, /* reduc_i64_cost */ | |
970 | 4, /* reduc_f16_cost */ | |
971 | 4, /* reduc_f32_cost */ | |
972 | 4, /* reduc_f64_cost */ | |
d1ff0847 | 973 | 4, /* store_elt_extra_cost */ |
76e4f444 KT |
974 | 4, /* vec_to_scalar_cost */ |
975 | 4, /* scalar_to_vec_cost */ | |
976 | 10, /* align_load_cost */ | |
977 | 10, /* unalign_load_cost */ | |
978 | 2, /* unalign_store_cost */ | |
979 | 2 /* store_cost */ | |
5ec1ae3b EM |
980 | }; |
981 | ||
381e27aa | 982 | /* Generic costs for vector insn classes. */ |
381e27aa PT |
983 | static const struct cpu_vector_cost xgene1_vector_cost = |
984 | { | |
cd8ae5ed AP |
985 | 1, /* scalar_int_stmt_cost */ |
986 | 1, /* scalar_fp_stmt_cost */ | |
bd95e655 JG |
987 | 5, /* scalar_load_cost */ |
988 | 1, /* scalar_store_cost */ | |
bd95e655 | 989 | 2, /* cond_taken_branch_cost */ |
76e4f444 KT |
990 | 1, /* cond_not_taken_branch_cost */ |
991 | &xgene1_advsimd_vector_cost, /* advsimd */ | |
1205a8ca RS |
992 | nullptr, /* sve */ |
993 | nullptr /* issue_info */ | |
76e4f444 KT |
994 | }; |
995 | ||
996 | static const advsimd_vec_cost thunderx2t99_advsimd_vector_cost = | |
997 | { | |
998 | 4, /* int_stmt_cost */ | |
999 | 5, /* fp_stmt_cost */ | |
b1a831f0 RS |
1000 | 0, /* ld2_st2_permute_cost */ |
1001 | 0, /* ld3_st3_permute_cost */ | |
1002 | 0, /* ld4_st4_permute_cost */ | |
76e4f444 | 1003 | 10, /* permute_cost */ |
e253bb8b RS |
1004 | 6, /* reduc_i8_cost */ |
1005 | 6, /* reduc_i16_cost */ | |
1006 | 6, /* reduc_i32_cost */ | |
1007 | 6, /* reduc_i64_cost */ | |
1008 | 6, /* reduc_f16_cost */ | |
1009 | 6, /* reduc_f32_cost */ | |
1010 | 6, /* reduc_f64_cost */ | |
d1ff0847 | 1011 | 6, /* store_elt_extra_cost */ |
76e4f444 KT |
1012 | 6, /* vec_to_scalar_cost */ |
1013 | 5, /* scalar_to_vec_cost */ | |
1014 | 4, /* align_load_cost */ | |
1015 | 4, /* unalign_load_cost */ | |
1016 | 1, /* unalign_store_cost */ | |
1017 | 1 /* store_cost */ | |
381e27aa PT |
1018 | }; |
1019 | ||
ad611a4c | 1020 | /* Costs for vector insn classes for Vulcan. */ |
d1261ac6 | 1021 | static const struct cpu_vector_cost thunderx2t99_vector_cost = |
ad611a4c | 1022 | { |
cd8ae5ed AP |
1023 | 1, /* scalar_int_stmt_cost */ |
1024 | 6, /* scalar_fp_stmt_cost */ | |
ad611a4c VP |
1025 | 4, /* scalar_load_cost */ |
1026 | 1, /* scalar_store_cost */ | |
ad611a4c | 1027 | 2, /* cond_taken_branch_cost */ |
76e4f444 KT |
1028 | 1, /* cond_not_taken_branch_cost */ |
1029 | &thunderx2t99_advsimd_vector_cost, /* advsimd */ | |
1205a8ca RS |
1030 | nullptr, /* sve */ |
1031 | nullptr /* issue_info */ | |
76e4f444 KT |
1032 | }; |
1033 | ||
1034 | static const advsimd_vec_cost thunderx3t110_advsimd_vector_cost = | |
1035 | { | |
1036 | 5, /* int_stmt_cost */ | |
1037 | 5, /* fp_stmt_cost */ | |
b1a831f0 RS |
1038 | 0, /* ld2_st2_permute_cost */ |
1039 | 0, /* ld3_st3_permute_cost */ | |
1040 | 0, /* ld4_st4_permute_cost */ | |
76e4f444 | 1041 | 10, /* permute_cost */ |
e253bb8b RS |
1042 | 5, /* reduc_i8_cost */ |
1043 | 5, /* reduc_i16_cost */ | |
1044 | 5, /* reduc_i32_cost */ | |
1045 | 5, /* reduc_i64_cost */ | |
1046 | 5, /* reduc_f16_cost */ | |
1047 | 5, /* reduc_f32_cost */ | |
1048 | 5, /* reduc_f64_cost */ | |
d1ff0847 | 1049 | 5, /* store_elt_extra_cost */ |
76e4f444 KT |
1050 | 5, /* vec_to_scalar_cost */ |
1051 | 5, /* scalar_to_vec_cost */ | |
1052 | 4, /* align_load_cost */ | |
1053 | 4, /* unalign_load_cost */ | |
1054 | 4, /* unalign_store_cost */ | |
1055 | 4 /* store_cost */ | |
ad611a4c VP |
1056 | }; |
1057 | ||
fa477e45 AY |
1058 | static const struct cpu_vector_cost thunderx3t110_vector_cost = |
1059 | { | |
1060 | 1, /* scalar_int_stmt_cost */ | |
1061 | 5, /* scalar_fp_stmt_cost */ | |
1062 | 4, /* scalar_load_cost */ | |
1063 | 1, /* scalar_store_cost */ | |
fa477e45 | 1064 | 2, /* cond_taken_branch_cost */ |
76e4f444 KT |
1065 | 1, /* cond_not_taken_branch_cost */ |
1066 | &thunderx3t110_advsimd_vector_cost, /* advsimd */ | |
1205a8ca RS |
1067 | nullptr, /* sve */ |
1068 | nullptr /* issue_info */ | |
fa477e45 AY |
1069 | }; |
1070 | ||
67b0d47e PT |
1071 | static const advsimd_vec_cost ampere1_advsimd_vector_cost = |
1072 | { | |
1073 | 3, /* int_stmt_cost */ | |
1074 | 3, /* fp_stmt_cost */ | |
1075 | 0, /* ld2_st2_permute_cost */ | |
1076 | 0, /* ld3_st3_permute_cost */ | |
1077 | 0, /* ld4_st4_permute_cost */ | |
1078 | 2, /* permute_cost */ | |
1079 | 12, /* reduc_i8_cost */ | |
1080 | 9, /* reduc_i16_cost */ | |
1081 | 6, /* reduc_i32_cost */ | |
1082 | 5, /* reduc_i64_cost */ | |
1083 | 9, /* reduc_f16_cost */ | |
1084 | 6, /* reduc_f32_cost */ | |
1085 | 5, /* reduc_f64_cost */ | |
1086 | 8, /* store_elt_extra_cost */ | |
1087 | 6, /* vec_to_scalar_cost */ | |
1088 | 7, /* scalar_to_vec_cost */ | |
1089 | 5, /* align_load_cost */ | |
1090 | 5, /* unalign_load_cost */ | |
1091 | 2, /* unalign_store_cost */ | |
1092 | 2 /* store_cost */ | |
1093 | }; | |
1094 | ||
1095 | /* Ampere-1 costs for vector insn classes. */ | |
1096 | static const struct cpu_vector_cost ampere1_vector_cost = | |
1097 | { | |
1098 | 1, /* scalar_int_stmt_cost */ | |
1099 | 1, /* scalar_fp_stmt_cost */ | |
1100 | 4, /* scalar_load_cost */ | |
1101 | 1, /* scalar_store_cost */ | |
1102 | 1, /* cond_taken_branch_cost */ | |
1103 | 1, /* cond_not_taken_branch_cost */ | |
1104 | &ere1_advsimd_vector_cost, /* advsimd */ | |
1105 | nullptr, /* sve */ | |
1106 | nullptr /* issue_info */ | |
1107 | }; | |
fa477e45 | 1108 | |
b9066f5a MW |
1109 | /* Generic costs for branch instructions. */ |
1110 | static const struct cpu_branch_cost generic_branch_cost = | |
1111 | { | |
9094d4a4 WD |
1112 | 1, /* Predictable. */ |
1113 | 3 /* Unpredictable. */ | |
b9066f5a MW |
1114 | }; |
1115 | ||
9acc9cbe EM |
1116 | /* Generic approximation modes. */ |
1117 | static const cpu_approx_modes generic_approx_modes = | |
1118 | { | |
79a2bc2d | 1119 | AARCH64_APPROX_NONE, /* division */ |
98daafa0 | 1120 | AARCH64_APPROX_NONE, /* sqrt */ |
9acc9cbe EM |
1121 | AARCH64_APPROX_NONE /* recip_sqrt */ |
1122 | }; | |
1123 | ||
1124 | /* Approximation modes for Exynos M1. */ | |
1125 | static const cpu_approx_modes exynosm1_approx_modes = | |
1126 | { | |
79a2bc2d | 1127 | AARCH64_APPROX_NONE, /* division */ |
98daafa0 | 1128 | AARCH64_APPROX_ALL, /* sqrt */ |
9acc9cbe EM |
1129 | AARCH64_APPROX_ALL /* recip_sqrt */ |
1130 | }; | |
1131 | ||
1132 | /* Approximation modes for X-Gene 1. */ | |
1133 | static const cpu_approx_modes xgene1_approx_modes = | |
1134 | { | |
79a2bc2d | 1135 | AARCH64_APPROX_NONE, /* division */ |
98daafa0 | 1136 | AARCH64_APPROX_NONE, /* sqrt */ |
9acc9cbe EM |
1137 | AARCH64_APPROX_ALL /* recip_sqrt */ |
1138 | }; | |
1139 | ||
9d2c6e2e MK |
1140 | /* Generic prefetch settings (which disable prefetch). */ |
1141 | static const cpu_prefetch_tune generic_prefetch_tune = | |
1142 | { | |
1143 | 0, /* num_slots */ | |
1144 | -1, /* l1_cache_size */ | |
1145 | -1, /* l1_cache_line_size */ | |
16b2cafd | 1146 | -1, /* l2_cache_size */ |
d2ff35c0 | 1147 | true, /* prefetch_dynamic_strides */ |
59100dfc | 1148 | -1, /* minimum_stride */ |
16b2cafd | 1149 | -1 /* default_opt_level */ |
9d2c6e2e MK |
1150 | }; |
1151 | ||
1152 | static const cpu_prefetch_tune exynosm1_prefetch_tune = | |
1153 | { | |
1154 | 0, /* num_slots */ | |
1155 | -1, /* l1_cache_size */ | |
1156 | 64, /* l1_cache_line_size */ | |
16b2cafd | 1157 | -1, /* l2_cache_size */ |
d2ff35c0 | 1158 | true, /* prefetch_dynamic_strides */ |
59100dfc | 1159 | -1, /* minimum_stride */ |
16b2cafd | 1160 | -1 /* default_opt_level */ |
9d2c6e2e MK |
1161 | }; |
1162 | ||
1163 | static const cpu_prefetch_tune qdf24xx_prefetch_tune = | |
1164 | { | |
70c51b58 MK |
1165 | 4, /* num_slots */ |
1166 | 32, /* l1_cache_size */ | |
9d2c6e2e | 1167 | 64, /* l1_cache_line_size */ |
725e2110 | 1168 | 512, /* l2_cache_size */ |
d2ff35c0 | 1169 | false, /* prefetch_dynamic_strides */ |
59100dfc LM |
1170 | 2048, /* minimum_stride */ |
1171 | 3 /* default_opt_level */ | |
9d2c6e2e MK |
1172 | }; |
1173 | ||
f1e247d0 AP |
1174 | static const cpu_prefetch_tune thunderxt88_prefetch_tune = |
1175 | { | |
1176 | 8, /* num_slots */ | |
1177 | 32, /* l1_cache_size */ | |
1178 | 128, /* l1_cache_line_size */ | |
1179 | 16*1024, /* l2_cache_size */ | |
d2ff35c0 | 1180 | true, /* prefetch_dynamic_strides */ |
59100dfc | 1181 | -1, /* minimum_stride */ |
f1e247d0 AP |
1182 | 3 /* default_opt_level */ |
1183 | }; | |
1184 | ||
1185 | static const cpu_prefetch_tune thunderx_prefetch_tune = | |
1186 | { | |
1187 | 8, /* num_slots */ | |
1188 | 32, /* l1_cache_size */ | |
1189 | 128, /* l1_cache_line_size */ | |
1190 | -1, /* l2_cache_size */ | |
d2ff35c0 | 1191 | true, /* prefetch_dynamic_strides */ |
59100dfc | 1192 | -1, /* minimum_stride */ |
f1e247d0 AP |
1193 | -1 /* default_opt_level */ |
1194 | }; | |
1195 | ||
9d2c6e2e MK |
1196 | static const cpu_prefetch_tune thunderx2t99_prefetch_tune = |
1197 | { | |
f1e247d0 AP |
1198 | 8, /* num_slots */ |
1199 | 32, /* l1_cache_size */ | |
9d2c6e2e | 1200 | 64, /* l1_cache_line_size */ |
f1e247d0 | 1201 | 256, /* l2_cache_size */ |
d2ff35c0 | 1202 | true, /* prefetch_dynamic_strides */ |
59100dfc | 1203 | -1, /* minimum_stride */ |
16b2cafd | 1204 | -1 /* default_opt_level */ |
9d2c6e2e MK |
1205 | }; |
1206 | ||
fa477e45 AY |
1207 | static const cpu_prefetch_tune thunderx3t110_prefetch_tune = |
1208 | { | |
1209 | 8, /* num_slots */ | |
1210 | 32, /* l1_cache_size */ | |
1211 | 64, /* l1_cache_line_size */ | |
1212 | 256, /* l2_cache_size */ | |
1213 | true, /* prefetch_dynamic_strides */ | |
1214 | -1, /* minimum_stride */ | |
1215 | -1 /* default_opt_level */ | |
1216 | }; | |
1217 | ||
910f72e7 SZ |
1218 | static const cpu_prefetch_tune tsv110_prefetch_tune = |
1219 | { | |
1220 | 0, /* num_slots */ | |
1221 | 64, /* l1_cache_size */ | |
1222 | 64, /* l1_cache_line_size */ | |
1223 | 512, /* l2_cache_size */ | |
1224 | true, /* prefetch_dynamic_strides */ | |
1225 | -1, /* minimum_stride */ | |
1226 | -1 /* default_opt_level */ | |
1227 | }; | |
1228 | ||
d5e9851e CM |
1229 | static const cpu_prefetch_tune xgene1_prefetch_tune = |
1230 | { | |
1231 | 8, /* num_slots */ | |
1232 | 32, /* l1_cache_size */ | |
1233 | 64, /* l1_cache_line_size */ | |
1234 | 256, /* l2_cache_size */ | |
1235 | true, /* prefetch_dynamic_strides */ | |
1236 | -1, /* minimum_stride */ | |
1237 | -1 /* default_opt_level */ | |
1238 | }; | |
1239 | ||
02f21aea QJ |
1240 | static const cpu_prefetch_tune a64fx_prefetch_tune = |
1241 | { | |
1242 | 8, /* num_slots */ | |
1243 | 64, /* l1_cache_size */ | |
1244 | 256, /* l1_cache_line_size */ | |
1245 | 32768, /* l2_cache_size */ | |
1246 | true, /* prefetch_dynamic_strides */ | |
1247 | -1, /* minimum_stride */ | |
1248 | -1 /* default_opt_level */ | |
1249 | }; | |
1250 | ||
67b0d47e PT |
1251 | static const cpu_prefetch_tune ampere1_prefetch_tune = |
1252 | { | |
1253 | 0, /* num_slots */ | |
1254 | 64, /* l1_cache_size */ | |
1255 | 64, /* l1_cache_line_size */ | |
1256 | 2048, /* l2_cache_size */ | |
1257 | true, /* prefetch_dynamic_strides */ | |
1258 | -1, /* minimum_stride */ | |
1259 | -1 /* default_opt_level */ | |
1260 | }; | |
1261 | ||
43e9d192 IB |
1262 | static const struct tune_params generic_tunings = |
1263 | { | |
4e2cd668 | 1264 | &cortexa57_extra_costs, |
43e9d192 IB |
1265 | &generic_addrcost_table, |
1266 | &generic_regmove_cost, | |
8990e73a | 1267 | &generic_vector_cost, |
b9066f5a | 1268 | &generic_branch_cost, |
9acc9cbe | 1269 | &generic_approx_modes, |
2d56d6ba | 1270 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
bd95e655 JG |
1271 | 4, /* memmov_cost */ |
1272 | 2, /* issue_rate */ | |
6ed8c923 | 1273 | (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_CMP_BRANCH), /* fusible_ops */ |
4e55aefa | 1274 | "16:12", /* function_align. */ |
c518c102 ML |
1275 | "4", /* jump_align. */ |
1276 | "8", /* loop_align. */ | |
cee66c68 WD |
1277 | 2, /* int_reassoc_width. */ |
1278 | 4, /* fp_reassoc_width. */ | |
50093a33 WD |
1279 | 1, /* vec_reassoc_width. */ |
1280 | 2, /* min_div_recip_mul_sf. */ | |
dfba575f | 1281 | 2, /* min_div_recip_mul_df. */ |
50487d79 | 1282 | 0, /* max_case_values. */ |
3b4c0f7e | 1283 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ |
8f0c9d53 KT |
1284 | /* Enabling AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS significantly benefits |
1285 | Neoverse V1. It does not have a noticeable effect on A64FX and should | |
1286 | have at most a very minor effect on SVE2 cores. */ | |
1287 | (AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS), /* tune_flags. */ | |
9d2c6e2e | 1288 | &generic_prefetch_tune |
43e9d192 IB |
1289 | }; |
1290 | ||
1c72a3ca JG |
1291 | static const struct tune_params cortexa35_tunings = |
1292 | { | |
1293 | &cortexa53_extra_costs, | |
1294 | &generic_addrcost_table, | |
1295 | &cortexa53_regmove_cost, | |
1296 | &generic_vector_cost, | |
aca97ef8 | 1297 | &generic_branch_cost, |
9acc9cbe | 1298 | &generic_approx_modes, |
2d56d6ba | 1299 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
1c72a3ca JG |
1300 | 4, /* memmov_cost */ |
1301 | 1, /* issue_rate */ | |
0bc24338 | 1302 | (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_MOV_MOVK | AARCH64_FUSE_ADRP_ADD |
1c72a3ca | 1303 | | AARCH64_FUSE_MOVK_MOVK | AARCH64_FUSE_ADRP_LDR), /* fusible_ops */ |
c518c102 ML |
1304 | "16", /* function_align. */ |
1305 | "4", /* jump_align. */ | |
1306 | "8", /* loop_align. */ | |
1c72a3ca JG |
1307 | 2, /* int_reassoc_width. */ |
1308 | 4, /* fp_reassoc_width. */ | |
1309 | 1, /* vec_reassoc_width. */ | |
1310 | 2, /* min_div_recip_mul_sf. */ | |
1311 | 2, /* min_div_recip_mul_df. */ | |
1312 | 0, /* max_case_values. */ | |
1c72a3ca | 1313 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ |
9d2c6e2e MK |
1314 | (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ |
1315 | &generic_prefetch_tune | |
1c72a3ca JG |
1316 | }; |
1317 | ||
984239ad KT |
1318 | static const struct tune_params cortexa53_tunings = |
1319 | { | |
1320 | &cortexa53_extra_costs, | |
1321 | &generic_addrcost_table, | |
e4a9c55a | 1322 | &cortexa53_regmove_cost, |
984239ad | 1323 | &generic_vector_cost, |
aca97ef8 | 1324 | &generic_branch_cost, |
9acc9cbe | 1325 | &generic_approx_modes, |
2d56d6ba | 1326 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
bd95e655 JG |
1327 | 4, /* memmov_cost */ |
1328 | 2, /* issue_rate */ | |
00a8574a | 1329 | (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_MOV_MOVK | AARCH64_FUSE_ADRP_ADD |
e9a3a175 | 1330 | | AARCH64_FUSE_MOVK_MOVK | AARCH64_FUSE_ADRP_LDR), /* fusible_ops */ |
c518c102 ML |
1331 | "16", /* function_align. */ |
1332 | "4", /* jump_align. */ | |
1333 | "8", /* loop_align. */ | |
cee66c68 WD |
1334 | 2, /* int_reassoc_width. */ |
1335 | 4, /* fp_reassoc_width. */ | |
50093a33 WD |
1336 | 1, /* vec_reassoc_width. */ |
1337 | 2, /* min_div_recip_mul_sf. */ | |
dfba575f | 1338 | 2, /* min_div_recip_mul_df. */ |
50487d79 | 1339 | 0, /* max_case_values. */ |
2d6bc7fa | 1340 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ |
9d2c6e2e MK |
1341 | (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ |
1342 | &generic_prefetch_tune | |
984239ad KT |
1343 | }; |
1344 | ||
4fd92af6 KT |
1345 | static const struct tune_params cortexa57_tunings = |
1346 | { | |
1347 | &cortexa57_extra_costs, | |
a39d4348 | 1348 | &generic_addrcost_table, |
e4a9c55a | 1349 | &cortexa57_regmove_cost, |
60bff090 | 1350 | &cortexa57_vector_cost, |
aca97ef8 | 1351 | &generic_branch_cost, |
9acc9cbe | 1352 | &generic_approx_modes, |
2d56d6ba | 1353 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
bd95e655 JG |
1354 | 4, /* memmov_cost */ |
1355 | 3, /* issue_rate */ | |
00a8574a | 1356 | (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_MOV_MOVK | AARCH64_FUSE_ADRP_ADD |
e9a3a175 | 1357 | | AARCH64_FUSE_MOVK_MOVK), /* fusible_ops */ |
c518c102 ML |
1358 | "16", /* function_align. */ |
1359 | "4", /* jump_align. */ | |
1360 | "8", /* loop_align. */ | |
cee66c68 WD |
1361 | 2, /* int_reassoc_width. */ |
1362 | 4, /* fp_reassoc_width. */ | |
50093a33 WD |
1363 | 1, /* vec_reassoc_width. */ |
1364 | 2, /* min_div_recip_mul_sf. */ | |
dfba575f | 1365 | 2, /* min_div_recip_mul_df. */ |
50487d79 | 1366 | 0, /* max_case_values. */ |
2d6bc7fa | 1367 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ |
9d2c6e2e MK |
1368 | (AARCH64_EXTRA_TUNE_RENAME_FMA_REGS), /* tune_flags. */ |
1369 | &generic_prefetch_tune | |
dfba575f JG |
1370 | }; |
1371 | ||
1372 | static const struct tune_params cortexa72_tunings = | |
1373 | { | |
1374 | &cortexa57_extra_costs, | |
a39d4348 | 1375 | &generic_addrcost_table, |
dfba575f JG |
1376 | &cortexa57_regmove_cost, |
1377 | &cortexa57_vector_cost, | |
aca97ef8 | 1378 | &generic_branch_cost, |
9acc9cbe | 1379 | &generic_approx_modes, |
2d56d6ba | 1380 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
dfba575f JG |
1381 | 4, /* memmov_cost */ |
1382 | 3, /* issue_rate */ | |
00a8574a | 1383 | (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_MOV_MOVK | AARCH64_FUSE_ADRP_ADD |
dfba575f | 1384 | | AARCH64_FUSE_MOVK_MOVK), /* fusible_ops */ |
c518c102 ML |
1385 | "16", /* function_align. */ |
1386 | "4", /* jump_align. */ | |
1387 | "8", /* loop_align. */ | |
dfba575f JG |
1388 | 2, /* int_reassoc_width. */ |
1389 | 4, /* fp_reassoc_width. */ | |
1390 | 1, /* vec_reassoc_width. */ | |
1391 | 2, /* min_div_recip_mul_sf. */ | |
1392 | 2, /* min_div_recip_mul_df. */ | |
50487d79 | 1393 | 0, /* max_case_values. */ |
0bc24338 | 1394 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ |
9d2c6e2e MK |
1395 | (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ |
1396 | &generic_prefetch_tune | |
4fd92af6 KT |
1397 | }; |
1398 | ||
4fb570c4 KT |
1399 | static const struct tune_params cortexa73_tunings = |
1400 | { | |
1401 | &cortexa57_extra_costs, | |
a39d4348 | 1402 | &generic_addrcost_table, |
4fb570c4 KT |
1403 | &cortexa57_regmove_cost, |
1404 | &cortexa57_vector_cost, | |
aca97ef8 | 1405 | &generic_branch_cost, |
4fb570c4 | 1406 | &generic_approx_modes, |
2d56d6ba | 1407 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
4fb570c4 KT |
1408 | 4, /* memmov_cost. */ |
1409 | 2, /* issue_rate. */ | |
1410 | (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_MOV_MOVK | AARCH64_FUSE_ADRP_ADD | |
1411 | | AARCH64_FUSE_MOVK_MOVK | AARCH64_FUSE_ADRP_LDR), /* fusible_ops */ | |
c518c102 ML |
1412 | "16", /* function_align. */ |
1413 | "4", /* jump_align. */ | |
1414 | "8", /* loop_align. */ | |
4fb570c4 KT |
1415 | 2, /* int_reassoc_width. */ |
1416 | 4, /* fp_reassoc_width. */ | |
1417 | 1, /* vec_reassoc_width. */ | |
1418 | 2, /* min_div_recip_mul_sf. */ | |
1419 | 2, /* min_div_recip_mul_df. */ | |
1420 | 0, /* max_case_values. */ | |
4fb570c4 | 1421 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ |
9d2c6e2e MK |
1422 | (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ |
1423 | &generic_prefetch_tune | |
4fb570c4 KT |
1424 | }; |
1425 | ||
9d2c6e2e MK |
1426 | |
1427 | ||
5ec1ae3b EM |
1428 | static const struct tune_params exynosm1_tunings = |
1429 | { | |
1430 | &exynosm1_extra_costs, | |
1431 | &exynosm1_addrcost_table, | |
1432 | &exynosm1_regmove_cost, | |
1433 | &exynosm1_vector_cost, | |
1434 | &generic_branch_cost, | |
9acc9cbe | 1435 | &exynosm1_approx_modes, |
2d56d6ba | 1436 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
5ec1ae3b EM |
1437 | 4, /* memmov_cost */ |
1438 | 3, /* issue_rate */ | |
25cc2199 | 1439 | (AARCH64_FUSE_AES_AESMC), /* fusible_ops */ |
c518c102 ML |
1440 | "4", /* function_align. */ |
1441 | "4", /* jump_align. */ | |
1442 | "4", /* loop_align. */ | |
5ec1ae3b EM |
1443 | 2, /* int_reassoc_width. */ |
1444 | 4, /* fp_reassoc_width. */ | |
1445 | 1, /* vec_reassoc_width. */ | |
1446 | 2, /* min_div_recip_mul_sf. */ | |
1447 | 2, /* min_div_recip_mul_df. */ | |
1448 | 48, /* max_case_values. */ | |
220379df | 1449 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ |
9d2c6e2e MK |
1450 | (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ |
1451 | &exynosm1_prefetch_tune | |
5ec1ae3b EM |
1452 | }; |
1453 | ||
f1e247d0 AP |
1454 | static const struct tune_params thunderxt88_tunings = |
1455 | { | |
1456 | &thunderx_extra_costs, | |
1457 | &generic_addrcost_table, | |
1458 | &thunderx_regmove_cost, | |
1459 | &thunderx_vector_cost, | |
1460 | &generic_branch_cost, | |
1461 | &generic_approx_modes, | |
2d56d6ba | 1462 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
f1e247d0 AP |
1463 | 6, /* memmov_cost */ |
1464 | 2, /* issue_rate */ | |
a4f3fa71 | 1465 | AARCH64_FUSE_ALU_BRANCH, /* fusible_ops */ |
c518c102 ML |
1466 | "8", /* function_align. */ |
1467 | "8", /* jump_align. */ | |
1468 | "8", /* loop_align. */ | |
f1e247d0 AP |
1469 | 2, /* int_reassoc_width. */ |
1470 | 4, /* fp_reassoc_width. */ | |
1471 | 1, /* vec_reassoc_width. */ | |
1472 | 2, /* min_div_recip_mul_sf. */ | |
1473 | 2, /* min_div_recip_mul_df. */ | |
1474 | 0, /* max_case_values. */ | |
1475 | tune_params::AUTOPREFETCHER_OFF, /* autoprefetcher_model. */ | |
1476 | (AARCH64_EXTRA_TUNE_SLOW_UNALIGNED_LDPW), /* tune_flags. */ | |
1477 | &thunderxt88_prefetch_tune | |
1478 | }; | |
1479 | ||
d1bcc29f AP |
1480 | static const struct tune_params thunderx_tunings = |
1481 | { | |
1482 | &thunderx_extra_costs, | |
1483 | &generic_addrcost_table, | |
1484 | &thunderx_regmove_cost, | |
c3f20327 | 1485 | &thunderx_vector_cost, |
b9066f5a | 1486 | &generic_branch_cost, |
9acc9cbe | 1487 | &generic_approx_modes, |
2d56d6ba | 1488 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
bd95e655 JG |
1489 | 6, /* memmov_cost */ |
1490 | 2, /* issue_rate */ | |
a4f3fa71 | 1491 | AARCH64_FUSE_ALU_BRANCH, /* fusible_ops */ |
c518c102 ML |
1492 | "8", /* function_align. */ |
1493 | "8", /* jump_align. */ | |
1494 | "8", /* loop_align. */ | |
cee66c68 WD |
1495 | 2, /* int_reassoc_width. */ |
1496 | 4, /* fp_reassoc_width. */ | |
50093a33 WD |
1497 | 1, /* vec_reassoc_width. */ |
1498 | 2, /* min_div_recip_mul_sf. */ | |
dfba575f | 1499 | 2, /* min_div_recip_mul_df. */ |
50487d79 | 1500 | 0, /* max_case_values. */ |
2d6bc7fa | 1501 | tune_params::AUTOPREFETCHER_OFF, /* autoprefetcher_model. */ |
b10f1009 AP |
1502 | (AARCH64_EXTRA_TUNE_SLOW_UNALIGNED_LDPW |
1503 | | AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND), /* tune_flags. */ | |
f1e247d0 | 1504 | &thunderx_prefetch_tune |
d1bcc29f AP |
1505 | }; |
1506 | ||
910f72e7 SZ |
1507 | static const struct tune_params tsv110_tunings = |
1508 | { | |
1509 | &tsv110_extra_costs, | |
1510 | &tsv110_addrcost_table, | |
1511 | &tsv110_regmove_cost, | |
1512 | &tsv110_vector_cost, | |
1513 | &generic_branch_cost, | |
1514 | &generic_approx_modes, | |
2d56d6ba | 1515 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
910f72e7 SZ |
1516 | 4, /* memmov_cost */ |
1517 | 4, /* issue_rate */ | |
a4f3fa71 WD |
1518 | (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_ALU_BRANCH |
1519 | | AARCH64_FUSE_ALU_CBZ), /* fusible_ops */ | |
910f72e7 SZ |
1520 | "16", /* function_align. */ |
1521 | "4", /* jump_align. */ | |
1522 | "8", /* loop_align. */ | |
1523 | 2, /* int_reassoc_width. */ | |
1524 | 4, /* fp_reassoc_width. */ | |
1525 | 1, /* vec_reassoc_width. */ | |
1526 | 2, /* min_div_recip_mul_sf. */ | |
1527 | 2, /* min_div_recip_mul_df. */ | |
1528 | 0, /* max_case_values. */ | |
1529 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ | |
1530 | (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ | |
1531 | &tsv110_prefetch_tune | |
1532 | }; | |
1533 | ||
381e27aa | 1534 | static const struct tune_params xgene1_tunings = |
e02669db CM |
1535 | { |
1536 | &xgene1_extra_costs, | |
1537 | &xgene1_addrcost_table, | |
1538 | &xgene1_regmove_cost, | |
1539 | &xgene1_vector_cost, | |
1540 | &generic_branch_cost, | |
1541 | &xgene1_approx_modes, | |
2d56d6ba | 1542 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
e02669db CM |
1543 | 6, /* memmov_cost */ |
1544 | 4, /* issue_rate */ | |
1545 | AARCH64_FUSE_NOTHING, /* fusible_ops */ | |
1546 | "16", /* function_align. */ | |
1547 | "16", /* jump_align. */ | |
1548 | "16", /* loop_align. */ | |
1549 | 2, /* int_reassoc_width. */ | |
1550 | 4, /* fp_reassoc_width. */ | |
1551 | 1, /* vec_reassoc_width. */ | |
1552 | 2, /* min_div_recip_mul_sf. */ | |
1553 | 2, /* min_div_recip_mul_df. */ | |
1554 | 17, /* max_case_values. */ | |
1555 | tune_params::AUTOPREFETCHER_OFF, /* autoprefetcher_model. */ | |
1556 | (AARCH64_EXTRA_TUNE_NO_LDP_STP_QREGS), /* tune_flags. */ | |
1557 | &xgene1_prefetch_tune | |
1558 | }; | |
1559 | ||
1560 | static const struct tune_params emag_tunings = | |
381e27aa PT |
1561 | { |
1562 | &xgene1_extra_costs, | |
1563 | &xgene1_addrcost_table, | |
1564 | &xgene1_regmove_cost, | |
1565 | &xgene1_vector_cost, | |
b9066f5a | 1566 | &generic_branch_cost, |
9acc9cbe | 1567 | &xgene1_approx_modes, |
2d56d6ba | 1568 | SVE_NOT_IMPLEMENTED, |
bd95e655 JG |
1569 | 6, /* memmov_cost */ |
1570 | 4, /* issue_rate */ | |
e9a3a175 | 1571 | AARCH64_FUSE_NOTHING, /* fusible_ops */ |
c518c102 | 1572 | "16", /* function_align. */ |
cf28c77e | 1573 | "16", /* jump_align. */ |
c518c102 | 1574 | "16", /* loop_align. */ |
381e27aa PT |
1575 | 2, /* int_reassoc_width. */ |
1576 | 4, /* fp_reassoc_width. */ | |
50093a33 WD |
1577 | 1, /* vec_reassoc_width. */ |
1578 | 2, /* min_div_recip_mul_sf. */ | |
dfba575f | 1579 | 2, /* min_div_recip_mul_df. */ |
cf28c77e | 1580 | 17, /* max_case_values. */ |
2d6bc7fa | 1581 | tune_params::AUTOPREFETCHER_OFF, /* autoprefetcher_model. */ |
9f5361c8 | 1582 | (AARCH64_EXTRA_TUNE_NO_LDP_STP_QREGS), /* tune_flags. */ |
d5e9851e | 1583 | &xgene1_prefetch_tune |
381e27aa PT |
1584 | }; |
1585 | ||
ee446d9f JW |
1586 | static const struct tune_params qdf24xx_tunings = |
1587 | { | |
1588 | &qdf24xx_extra_costs, | |
8d39ea2f | 1589 | &qdf24xx_addrcost_table, |
ee446d9f | 1590 | &qdf24xx_regmove_cost, |
e75bc10e | 1591 | &qdf24xx_vector_cost, |
ee446d9f JW |
1592 | &generic_branch_cost, |
1593 | &generic_approx_modes, | |
2d56d6ba | 1594 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
ee446d9f JW |
1595 | 4, /* memmov_cost */ |
1596 | 4, /* issue_rate */ | |
1597 | (AARCH64_FUSE_MOV_MOVK | AARCH64_FUSE_ADRP_ADD | |
1598 | | AARCH64_FUSE_MOVK_MOVK), /* fuseable_ops */ | |
c518c102 ML |
1599 | "16", /* function_align. */ |
1600 | "8", /* jump_align. */ | |
1601 | "16", /* loop_align. */ | |
ee446d9f JW |
1602 | 2, /* int_reassoc_width. */ |
1603 | 4, /* fp_reassoc_width. */ | |
1604 | 1, /* vec_reassoc_width. */ | |
1605 | 2, /* min_div_recip_mul_sf. */ | |
1606 | 2, /* min_div_recip_mul_df. */ | |
1607 | 0, /* max_case_values. */ | |
4f2a94e6 | 1608 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ |
a98824ac | 1609 | AARCH64_EXTRA_TUNE_RENAME_LOAD_REGS, /* tune_flags. */ |
9d2c6e2e | 1610 | &qdf24xx_prefetch_tune |
ee446d9f JW |
1611 | }; |
1612 | ||
52ee8191 SP |
1613 | /* Tuning structure for the Qualcomm Saphira core. Default to falkor values |
1614 | for now. */ | |
1615 | static const struct tune_params saphira_tunings = | |
1616 | { | |
1617 | &generic_extra_costs, | |
1618 | &generic_addrcost_table, | |
1619 | &generic_regmove_cost, | |
1620 | &generic_vector_cost, | |
1621 | &generic_branch_cost, | |
1622 | &generic_approx_modes, | |
2d56d6ba | 1623 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
52ee8191 SP |
1624 | 4, /* memmov_cost */ |
1625 | 4, /* issue_rate */ | |
1626 | (AARCH64_FUSE_MOV_MOVK | AARCH64_FUSE_ADRP_ADD | |
1627 | | AARCH64_FUSE_MOVK_MOVK), /* fuseable_ops */ | |
c518c102 ML |
1628 | "16", /* function_align. */ |
1629 | "8", /* jump_align. */ | |
1630 | "16", /* loop_align. */ | |
52ee8191 SP |
1631 | 2, /* int_reassoc_width. */ |
1632 | 4, /* fp_reassoc_width. */ | |
1633 | 1, /* vec_reassoc_width. */ | |
1634 | 2, /* min_div_recip_mul_sf. */ | |
1635 | 2, /* min_div_recip_mul_df. */ | |
1636 | 0, /* max_case_values. */ | |
1637 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ | |
1638 | (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ | |
1639 | &generic_prefetch_tune | |
1640 | }; | |
1641 | ||
d1261ac6 | 1642 | static const struct tune_params thunderx2t99_tunings = |
ad611a4c | 1643 | { |
d1261ac6 AP |
1644 | &thunderx2t99_extra_costs, |
1645 | &thunderx2t99_addrcost_table, | |
1646 | &thunderx2t99_regmove_cost, | |
1647 | &thunderx2t99_vector_cost, | |
aca97ef8 | 1648 | &generic_branch_cost, |
ad611a4c | 1649 | &generic_approx_modes, |
2d56d6ba | 1650 | SVE_NOT_IMPLEMENTED, /* sve_width */ |
ad611a4c VP |
1651 | 4, /* memmov_cost. */ |
1652 | 4, /* issue_rate. */ | |
a4f3fa71 WD |
1653 | (AARCH64_FUSE_ALU_BRANCH | AARCH64_FUSE_AES_AESMC |
1654 | | AARCH64_FUSE_ALU_CBZ), /* fusible_ops */ | |
c518c102 ML |
1655 | "16", /* function_align. */ |
1656 | "8", /* jump_align. */ | |
1657 | "16", /* loop_align. */ | |
ad611a4c VP |
1658 | 3, /* int_reassoc_width. */ |
1659 | 2, /* fp_reassoc_width. */ | |
1660 | 2, /* vec_reassoc_width. */ | |
1661 | 2, /* min_div_recip_mul_sf. */ | |
1662 | 2, /* min_div_recip_mul_df. */ | |
1663 | 0, /* max_case_values. */ | |
f1e247d0 | 1664 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ |
9d2c6e2e MK |
1665 | (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ |
1666 | &thunderx2t99_prefetch_tune | |
ad611a4c VP |
1667 | }; |
1668 | ||
fa477e45 AY |
1669 | static const struct tune_params thunderx3t110_tunings = |
1670 | { | |
1671 | &thunderx3t110_extra_costs, | |
1672 | &thunderx3t110_addrcost_table, | |
1673 | &thunderx3t110_regmove_cost, | |
1674 | &thunderx3t110_vector_cost, | |
1675 | &generic_branch_cost, | |
1676 | &generic_approx_modes, | |
1677 | SVE_NOT_IMPLEMENTED, /* sve_width */ | |
1678 | 4, /* memmov_cost. */ | |
1679 | 6, /* issue_rate. */ | |
1680 | (AARCH64_FUSE_ALU_BRANCH | AARCH64_FUSE_AES_AESMC | |
1681 | | AARCH64_FUSE_ALU_CBZ), /* fusible_ops */ | |
1682 | "16", /* function_align. */ | |
1683 | "8", /* jump_align. */ | |
1684 | "16", /* loop_align. */ | |
1685 | 3, /* int_reassoc_width. */ | |
1686 | 2, /* fp_reassoc_width. */ | |
1687 | 2, /* vec_reassoc_width. */ | |
1688 | 2, /* min_div_recip_mul_sf. */ | |
1689 | 2, /* min_div_recip_mul_df. */ | |
1690 | 0, /* max_case_values. */ | |
1691 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ | |
1692 | (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ | |
1693 | &thunderx3t110_prefetch_tune | |
1694 | }; | |
1695 | ||
9ed6834d | 1696 | static const struct tune_params neoversen1_tunings = |
fc881de2 | 1697 | { |
5c5a67e6 | 1698 | &cortexa76_extra_costs, |
fc881de2 KT |
1699 | &generic_addrcost_table, |
1700 | &generic_regmove_cost, | |
1701 | &cortexa57_vector_cost, | |
1702 | &generic_branch_cost, | |
1703 | &generic_approx_modes, | |
1704 | SVE_NOT_IMPLEMENTED, /* sve_width */ | |
1705 | 4, /* memmov_cost */ | |
1706 | 3, /* issue_rate */ | |
6ed8c923 | 1707 | (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_CMP_BRANCH), /* fusible_ops */ |
fc881de2 | 1708 | "32:16", /* function_align. */ |
3a434597 | 1709 | "4", /* jump_align. */ |
fc881de2 KT |
1710 | "32:16", /* loop_align. */ |
1711 | 2, /* int_reassoc_width. */ | |
1712 | 4, /* fp_reassoc_width. */ | |
1713 | 2, /* vec_reassoc_width. */ | |
1714 | 2, /* min_div_recip_mul_sf. */ | |
1715 | 2, /* min_div_recip_mul_df. */ | |
1716 | 0, /* max_case_values. */ | |
1717 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ | |
b326f495 | 1718 | (AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND), /* tune_flags. */ |
fc881de2 KT |
1719 | &generic_prefetch_tune |
1720 | }; | |
1721 | ||
67b0d47e PT |
1722 | static const struct tune_params ampere1_tunings = |
1723 | { | |
1724 | &ere1_extra_costs, | |
1725 | &generic_addrcost_table, | |
1726 | &generic_regmove_cost, | |
1727 | &ere1_vector_cost, | |
1728 | &generic_branch_cost, | |
1729 | &generic_approx_modes, | |
1730 | SVE_NOT_IMPLEMENTED, /* sve_width */ | |
1731 | 4, /* memmov_cost */ | |
1732 | 4, /* issue_rate */ | |
1733 | (AARCH64_FUSE_ADRP_ADD | AARCH64_FUSE_AES_AESMC | | |
1734 | AARCH64_FUSE_MOV_MOVK | AARCH64_FUSE_MOVK_MOVK | | |
1735 | AARCH64_FUSE_ALU_BRANCH /* adds, ands, bics, ccmp, ccmn */ | | |
1736 | AARCH64_FUSE_CMP_BRANCH), | |
1737 | /* fusible_ops */ | |
1738 | "32", /* function_align. */ | |
1739 | "4", /* jump_align. */ | |
1740 | "32:16", /* loop_align. */ | |
1741 | 2, /* int_reassoc_width. */ | |
1742 | 4, /* fp_reassoc_width. */ | |
1743 | 2, /* vec_reassoc_width. */ | |
1744 | 2, /* min_div_recip_mul_sf. */ | |
1745 | 2, /* min_div_recip_mul_df. */ | |
1746 | 0, /* max_case_values. */ | |
1747 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ | |
1748 | (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ | |
1749 | &ere1_prefetch_tune | |
1750 | }; | |
1751 | ||
14bd21c2 RS |
1752 | static const advsimd_vec_cost neoversev1_advsimd_vector_cost = |
1753 | { | |
1754 | 2, /* int_stmt_cost */ | |
1755 | 2, /* fp_stmt_cost */ | |
1756 | 4, /* ld2_st2_permute_cost */ | |
1757 | 4, /* ld3_st3_permute_cost */ | |
1758 | 5, /* ld4_st4_permute_cost */ | |
1759 | 3, /* permute_cost */ | |
1760 | 4, /* reduc_i8_cost */ | |
1761 | 4, /* reduc_i16_cost */ | |
1762 | 2, /* reduc_i32_cost */ | |
1763 | 2, /* reduc_i64_cost */ | |
1764 | 6, /* reduc_f16_cost */ | |
1765 | 3, /* reduc_f32_cost */ | |
1766 | 2, /* reduc_f64_cost */ | |
1767 | 2, /* store_elt_extra_cost */ | |
1768 | /* This value is just inherited from the Cortex-A57 table. */ | |
1769 | 8, /* vec_to_scalar_cost */ | |
1770 | /* This depends very much on what the scalar value is and | |
1771 | where it comes from. E.g. some constants take two dependent | |
1772 | instructions or a load, while others might be moved from a GPR. | |
1773 | 4 seems to be a reasonable compromise in practice. */ | |
1774 | 4, /* scalar_to_vec_cost */ | |
1775 | 4, /* align_load_cost */ | |
1776 | 4, /* unalign_load_cost */ | |
1777 | /* Although stores have a latency of 2 and compete for the | |
1778 | vector pipes, in practice it's better not to model that. */ | |
1779 | 1, /* unalign_store_cost */ | |
1780 | 1 /* store_cost */ | |
1781 | }; | |
1782 | ||
1783 | static const sve_vec_cost neoversev1_sve_vector_cost = | |
1784 | { | |
1785 | { | |
1786 | 2, /* int_stmt_cost */ | |
1787 | 2, /* fp_stmt_cost */ | |
1788 | 4, /* ld2_st2_permute_cost */ | |
1789 | 7, /* ld3_st3_permute_cost */ | |
1790 | 8, /* ld4_st4_permute_cost */ | |
1791 | 3, /* permute_cost */ | |
1792 | /* Theoretically, a reduction involving 31 scalar ADDs could | |
1793 | complete in ~9 cycles and would have a cost of 31. [SU]ADDV | |
1794 | completes in 14 cycles, so give it a cost of 31 + 5. */ | |
1795 | 36, /* reduc_i8_cost */ | |
1796 | /* Likewise for 15 scalar ADDs (~5 cycles) vs. 12: 15 + 7. */ | |
1797 | 22, /* reduc_i16_cost */ | |
1798 | /* Likewise for 7 scalar ADDs (~3 cycles) vs. 10: 7 + 7. */ | |
1799 | 14, /* reduc_i32_cost */ | |
1800 | /* Likewise for 3 scalar ADDs (~2 cycles) vs. 10: 3 + 8. */ | |
1801 | 11, /* reduc_i64_cost */ | |
1802 | /* Theoretically, a reduction involving 15 scalar FADDs could | |
1803 | complete in ~9 cycles and would have a cost of 30. FADDV | |
1804 | completes in 13 cycles, so give it a cost of 30 + 4. */ | |
1805 | 34, /* reduc_f16_cost */ | |
1806 | /* Likewise for 7 scalar FADDs (~6 cycles) vs. 11: 14 + 5. */ | |
1807 | 19, /* reduc_f32_cost */ | |
1808 | /* Likewise for 3 scalar FADDs (~4 cycles) vs. 9: 6 + 5. */ | |
1809 | 11, /* reduc_f64_cost */ | |
1810 | 2, /* store_elt_extra_cost */ | |
1811 | /* This value is just inherited from the Cortex-A57 table. */ | |
1812 | 8, /* vec_to_scalar_cost */ | |
1813 | /* See the comment above the Advanced SIMD versions. */ | |
1814 | 4, /* scalar_to_vec_cost */ | |
1815 | 4, /* align_load_cost */ | |
1816 | 4, /* unalign_load_cost */ | |
1817 | /* Although stores have a latency of 2 and compete for the | |
1818 | vector pipes, in practice it's better not to model that. */ | |
1819 | 1, /* unalign_store_cost */ | |
1820 | 1 /* store_cost */ | |
1821 | }, | |
1822 | 3, /* clast_cost */ | |
1823 | 19, /* fadda_f16_cost */ | |
1824 | 11, /* fadda_f32_cost */ | |
1825 | 8, /* fadda_f64_cost */ | |
78770e0e RS |
1826 | 32, /* gather_load_x32_cost */ |
1827 | 16, /* gather_load_x64_cost */ | |
14bd21c2 RS |
1828 | 3 /* scatter_store_elt_cost */ |
1829 | }; | |
1830 | ||
1205a8ca RS |
1831 | static const aarch64_scalar_vec_issue_info neoversev1_scalar_issue_info = |
1832 | { | |
1833 | 3, /* loads_stores_per_cycle */ | |
1834 | 2, /* stores_per_cycle */ | |
1835 | 4, /* general_ops_per_cycle */ | |
1836 | 0, /* fp_simd_load_general_ops */ | |
1837 | 1 /* fp_simd_store_general_ops */ | |
1838 | }; | |
1839 | ||
1840 | static const aarch64_advsimd_vec_issue_info neoversev1_advsimd_issue_info = | |
1841 | { | |
1842 | { | |
1843 | 3, /* loads_stores_per_cycle */ | |
1844 | 2, /* stores_per_cycle */ | |
1845 | 4, /* general_ops_per_cycle */ | |
1846 | 0, /* fp_simd_load_general_ops */ | |
1847 | 1 /* fp_simd_store_general_ops */ | |
1848 | }, | |
1849 | 2, /* ld2_st2_general_ops */ | |
1850 | 2, /* ld3_st3_general_ops */ | |
1851 | 3 /* ld4_st4_general_ops */ | |
1852 | }; | |
1853 | ||
1854 | static const aarch64_sve_vec_issue_info neoversev1_sve_issue_info = | |
1855 | { | |
1856 | { | |
1857 | { | |
1858 | 2, /* loads_per_cycle */ | |
1859 | 2, /* stores_per_cycle */ | |
1860 | 2, /* general_ops_per_cycle */ | |
1861 | 0, /* fp_simd_load_general_ops */ | |
1862 | 1 /* fp_simd_store_general_ops */ | |
1863 | }, | |
1864 | 2, /* ld2_st2_general_ops */ | |
1865 | 2, /* ld3_st3_general_ops */ | |
1866 | 3 /* ld4_st4_general_ops */ | |
1867 | }, | |
1868 | 1, /* pred_ops_per_cycle */ | |
1869 | 2, /* while_pred_ops */ | |
1870 | 2, /* int_cmp_pred_ops */ | |
1871 | 1, /* fp_cmp_pred_ops */ | |
1872 | 1, /* gather_scatter_pair_general_ops */ | |
1873 | 1 /* gather_scatter_pair_pred_ops */ | |
1874 | }; | |
1875 | ||
1876 | static const aarch64_vec_issue_info neoversev1_vec_issue_info = | |
1877 | { | |
1878 | &neoversev1_scalar_issue_info, | |
1879 | &neoversev1_advsimd_issue_info, | |
1880 | &neoversev1_sve_issue_info | |
1881 | }; | |
1882 | ||
14bd21c2 RS |
1883 | /* Neoverse V1 costs for vector insn classes. */ |
1884 | static const struct cpu_vector_cost neoversev1_vector_cost = | |
1885 | { | |
1886 | 1, /* scalar_int_stmt_cost */ | |
1887 | 2, /* scalar_fp_stmt_cost */ | |
1888 | 4, /* scalar_load_cost */ | |
1889 | 1, /* scalar_store_cost */ | |
1890 | 1, /* cond_taken_branch_cost */ | |
1891 | 1, /* cond_not_taken_branch_cost */ | |
1892 | &neoversev1_advsimd_vector_cost, /* advsimd */ | |
1205a8ca RS |
1893 | &neoversev1_sve_vector_cost, /* sve */ |
1894 | &neoversev1_vec_issue_info /* issue_info */ | |
14bd21c2 RS |
1895 | }; |
1896 | ||
c8c77ed7 KT |
1897 | static const struct tune_params neoversev1_tunings = |
1898 | { | |
5c5a67e6 | 1899 | &cortexa76_extra_costs, |
6b8b0c8e | 1900 | &neoversev1_addrcost_table, |
c8c77ed7 | 1901 | &generic_regmove_cost, |
14bd21c2 | 1902 | &neoversev1_vector_cost, |
c8c77ed7 KT |
1903 | &generic_branch_cost, |
1904 | &generic_approx_modes, | |
1905 | SVE_256, /* sve_width */ | |
1906 | 4, /* memmov_cost */ | |
1907 | 3, /* issue_rate */ | |
1908 | (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_CMP_BRANCH), /* fusible_ops */ | |
1909 | "32:16", /* function_align. */ | |
1910 | "4", /* jump_align. */ | |
1911 | "32:16", /* loop_align. */ | |
1912 | 2, /* int_reassoc_width. */ | |
1913 | 4, /* fp_reassoc_width. */ | |
1914 | 2, /* vec_reassoc_width. */ | |
1915 | 2, /* min_div_recip_mul_sf. */ | |
1916 | 2, /* min_div_recip_mul_df. */ | |
1917 | 0, /* max_case_values. */ | |
1918 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ | |
14bd21c2 | 1919 | (AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS |
3b924b0d | 1920 | | AARCH64_EXTRA_TUNE_USE_NEW_VECTOR_COSTS |
c437d334 WD |
1921 | | AARCH64_EXTRA_TUNE_MATCHED_VECTOR_THROUGHPUT |
1922 | | AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND), /* tune_flags. */ | |
c8c77ed7 KT |
1923 | &generic_prefetch_tune |
1924 | }; | |
1925 | ||
048039c4 RS |
1926 | static const sve_vec_cost neoverse512tvb_sve_vector_cost = |
1927 | { | |
1928 | { | |
1929 | 2, /* int_stmt_cost */ | |
1930 | 2, /* fp_stmt_cost */ | |
1931 | 4, /* ld2_st2_permute_cost */ | |
1932 | 5, /* ld3_st3_permute_cost */ | |
1933 | 5, /* ld4_st4_permute_cost */ | |
1934 | 3, /* permute_cost */ | |
1935 | /* Theoretically, a reduction involving 15 scalar ADDs could | |
1936 | complete in ~5 cycles and would have a cost of 15. Assume that | |
1937 | [SU]ADDV completes in 11 cycles and so give it a cost of 15 + 6. */ | |
1938 | 21, /* reduc_i8_cost */ | |
1939 | /* Likewise for 7 scalar ADDs (~3 cycles) vs. 9: 7 + 6. */ | |
1940 | 13, /* reduc_i16_cost */ | |
1941 | /* Likewise for 3 scalar ADDs (~2 cycles) vs. 8: 3 + 6. */ | |
1942 | 9, /* reduc_i32_cost */ | |
1943 | /* Likewise for 1 scalar ADD (1 cycle) vs. 8: 1 + 7. */ | |
1944 | 8, /* reduc_i64_cost */ | |
1945 | /* Theoretically, a reduction involving 7 scalar FADDs could | |
1946 | complete in ~6 cycles and would have a cost of 14. Assume that | |
1947 | FADDV completes in 8 cycles and so give it a cost of 14 + 2. */ | |
1948 | 16, /* reduc_f16_cost */ | |
1949 | /* Likewise for 3 scalar FADDs (~4 cycles) vs. 6: 6 + 2. */ | |
1950 | 8, /* reduc_f32_cost */ | |
1951 | /* Likewise for 1 scalar FADD (2 cycles) vs. 4: 2 + 2. */ | |
1952 | 4, /* reduc_f64_cost */ | |
1953 | 2, /* store_elt_extra_cost */ | |
1954 | /* This value is just inherited from the Cortex-A57 table. */ | |
1955 | 8, /* vec_to_scalar_cost */ | |
1956 | /* This depends very much on what the scalar value is and | |
1957 | where it comes from. E.g. some constants take two dependent | |
1958 | instructions or a load, while others might be moved from a GPR. | |
1959 | 4 seems to be a reasonable compromise in practice. */ | |
1960 | 4, /* scalar_to_vec_cost */ | |
1961 | 4, /* align_load_cost */ | |
1962 | 4, /* unalign_load_cost */ | |
1963 | /* Although stores generally have a latency of 2 and compete for the | |
1964 | vector pipes, in practice it's better not to model that. */ | |
1965 | 1, /* unalign_store_cost */ | |
1966 | 1 /* store_cost */ | |
1967 | }, | |
1968 | 3, /* clast_cost */ | |
1969 | 10, /* fadda_f16_cost */ | |
1970 | 6, /* fadda_f32_cost */ | |
1971 | 4, /* fadda_f64_cost */ | |
1972 | /* A strided Advanced SIMD x64 load would take two parallel FP loads | |
1973 | (6 cycles) plus an insertion (2 cycles). Assume a 64-bit SVE gather | |
1974 | is 1 cycle more. The Advanced SIMD version is costed as 2 scalar loads | |
1975 | (cost 8) and a vec_construct (cost 2). Add a full vector operation | |
1976 | (cost 2) to that, to avoid the difference being lost in rounding. | |
1977 | ||
1978 | There is no easy comparison between a strided Advanced SIMD x32 load | |
1979 | and an SVE 32-bit gather, but cost an SVE 32-bit gather as 1 vector | |
1980 | operation more than a 64-bit gather. */ | |
1981 | 14, /* gather_load_x32_cost */ | |
1982 | 12, /* gather_load_x64_cost */ | |
1983 | 3 /* scatter_store_elt_cost */ | |
1984 | }; | |
1985 | ||
1986 | static const aarch64_sve_vec_issue_info neoverse512tvb_sve_issue_info = | |
1987 | { | |
1988 | { | |
1989 | { | |
1990 | 3, /* loads_per_cycle */ | |
1991 | 2, /* stores_per_cycle */ | |
1992 | 4, /* general_ops_per_cycle */ | |
1993 | 0, /* fp_simd_load_general_ops */ | |
1994 | 1 /* fp_simd_store_general_ops */ | |
1995 | }, | |
1996 | 2, /* ld2_st2_general_ops */ | |
1997 | 2, /* ld3_st3_general_ops */ | |
1998 | 3 /* ld4_st4_general_ops */ | |
1999 | }, | |
2000 | 2, /* pred_ops_per_cycle */ | |
2001 | 2, /* while_pred_ops */ | |
2002 | 2, /* int_cmp_pred_ops */ | |
2003 | 1, /* fp_cmp_pred_ops */ | |
2004 | 1, /* gather_scatter_pair_general_ops */ | |
2005 | 1 /* gather_scatter_pair_pred_ops */ | |
2006 | }; | |
2007 | ||
2008 | static const aarch64_vec_issue_info neoverse512tvb_vec_issue_info = | |
2009 | { | |
2010 | &neoversev1_scalar_issue_info, | |
2011 | &neoversev1_advsimd_issue_info, | |
2012 | &neoverse512tvb_sve_issue_info | |
2013 | }; | |
2014 | ||
2015 | static const struct cpu_vector_cost neoverse512tvb_vector_cost = | |
2016 | { | |
2017 | 1, /* scalar_int_stmt_cost */ | |
2018 | 2, /* scalar_fp_stmt_cost */ | |
2019 | 4, /* scalar_load_cost */ | |
2020 | 1, /* scalar_store_cost */ | |
2021 | 1, /* cond_taken_branch_cost */ | |
2022 | 1, /* cond_not_taken_branch_cost */ | |
2023 | &neoversev1_advsimd_vector_cost, /* advsimd */ | |
2024 | &neoverse512tvb_sve_vector_cost, /* sve */ | |
2025 | &neoverse512tvb_vec_issue_info /* issue_info */ | |
2026 | }; | |
2027 | ||
2028 | static const struct tune_params neoverse512tvb_tunings = | |
2029 | { | |
2030 | &cortexa76_extra_costs, | |
2031 | &neoversev1_addrcost_table, | |
2032 | &generic_regmove_cost, | |
2033 | &neoverse512tvb_vector_cost, | |
2034 | &generic_branch_cost, | |
2035 | &generic_approx_modes, | |
2036 | SVE_128 | SVE_256, /* sve_width */ | |
2037 | 4, /* memmov_cost */ | |
2038 | 3, /* issue_rate */ | |
2039 | (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_CMP_BRANCH), /* fusible_ops */ | |
2040 | "32:16", /* function_align. */ | |
2041 | "4", /* jump_align. */ | |
2042 | "32:16", /* loop_align. */ | |
2043 | 2, /* int_reassoc_width. */ | |
2044 | 4, /* fp_reassoc_width. */ | |
2045 | 2, /* vec_reassoc_width. */ | |
2046 | 2, /* min_div_recip_mul_sf. */ | |
2047 | 2, /* min_div_recip_mul_df. */ | |
2048 | 0, /* max_case_values. */ | |
2049 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ | |
2050 | (AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS | |
2051 | | AARCH64_EXTRA_TUNE_USE_NEW_VECTOR_COSTS | |
2052 | | AARCH64_EXTRA_TUNE_MATCHED_VECTOR_THROUGHPUT), /* tune_flags. */ | |
2053 | &generic_prefetch_tune | |
2054 | }; | |
2055 | ||
25095d1e KT |
2056 | static const struct tune_params neoversen2_tunings = |
2057 | { | |
5c5a67e6 | 2058 | &cortexa76_extra_costs, |
25095d1e KT |
2059 | &generic_addrcost_table, |
2060 | &generic_regmove_cost, | |
2061 | &cortexa57_vector_cost, | |
2062 | &generic_branch_cost, | |
2063 | &generic_approx_modes, | |
2064 | SVE_128, /* sve_width */ | |
2065 | 4, /* memmov_cost */ | |
2066 | 3, /* issue_rate */ | |
2067 | (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_CMP_BRANCH), /* fusible_ops */ | |
2068 | "32:16", /* function_align. */ | |
2069 | "4", /* jump_align. */ | |
2070 | "32:16", /* loop_align. */ | |
2071 | 2, /* int_reassoc_width. */ | |
2072 | 4, /* fp_reassoc_width. */ | |
2073 | 2, /* vec_reassoc_width. */ | |
2074 | 2, /* min_div_recip_mul_sf. */ | |
2075 | 2, /* min_div_recip_mul_df. */ | |
2076 | 0, /* max_case_values. */ | |
2077 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ | |
c437d334 | 2078 | (AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND), /* tune_flags. */ |
25095d1e KT |
2079 | &generic_prefetch_tune |
2080 | }; | |
2081 | ||
02f21aea QJ |
2082 | static const struct tune_params a64fx_tunings = |
2083 | { | |
3f325179 QJ |
2084 | &a64fx_extra_costs, |
2085 | &a64fx_addrcost_table, | |
2086 | &a64fx_regmove_cost, | |
2087 | &a64fx_vector_cost, | |
02f21aea QJ |
2088 | &generic_branch_cost, |
2089 | &generic_approx_modes, | |
2090 | SVE_512, /* sve_width */ | |
2091 | 4, /* memmov_cost */ | |
2092 | 7, /* issue_rate */ | |
2093 | (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_CMP_BRANCH), /* fusible_ops */ | |
2094 | "32", /* function_align. */ | |
2095 | "16", /* jump_align. */ | |
2096 | "32", /* loop_align. */ | |
2097 | 4, /* int_reassoc_width. */ | |
2098 | 2, /* fp_reassoc_width. */ | |
2099 | 2, /* vec_reassoc_width. */ | |
2100 | 2, /* min_div_recip_mul_sf. */ | |
2101 | 2, /* min_div_recip_mul_df. */ | |
2102 | 0, /* max_case_values. */ | |
2103 | tune_params::AUTOPREFETCHER_WEAK, /* autoprefetcher_model. */ | |
2104 | (AARCH64_EXTRA_TUNE_NONE), /* tune_flags. */ | |
2105 | &a64fx_prefetch_tune | |
2106 | }; | |
2107 | ||
8dec06f2 JG |
2108 | /* Support for fine-grained override of the tuning structures. */ |
2109 | struct aarch64_tuning_override_function | |
2110 | { | |
2111 | const char* name; | |
2112 | void (*parse_override)(const char*, struct tune_params*); | |
2113 | }; | |
2114 | ||
2115 | static void aarch64_parse_fuse_string (const char*, struct tune_params*); | |
2116 | static void aarch64_parse_tune_string (const char*, struct tune_params*); | |
886f092f | 2117 | static void aarch64_parse_sve_width_string (const char*, struct tune_params*); |
8dec06f2 JG |
2118 | |
2119 | static const struct aarch64_tuning_override_function | |
2120 | aarch64_tuning_override_functions[] = | |
2121 | { | |
2122 | { "fuse", aarch64_parse_fuse_string }, | |
2123 | { "tune", aarch64_parse_tune_string }, | |
886f092f | 2124 | { "sve_width", aarch64_parse_sve_width_string }, |
8dec06f2 JG |
2125 | { NULL, NULL } |
2126 | }; | |
2127 | ||
43e9d192 IB |
2128 | /* A processor implementing AArch64. */ |
2129 | struct processor | |
2130 | { | |
2131 | const char *const name; | |
46806c44 KT |
2132 | enum aarch64_processor ident; |
2133 | enum aarch64_processor sched_core; | |
393ae126 | 2134 | enum aarch64_arch arch; |
0c6caaf8 | 2135 | unsigned architecture_version; |
28108a53 | 2136 | const uint64_t flags; |
43e9d192 IB |
2137 | const struct tune_params *const tune; |
2138 | }; | |
2139 | ||
393ae126 KT |
2140 | /* Architectures implementing AArch64. */ |
2141 | static const struct processor all_architectures[] = | |
2142 | { | |
2143 | #define AARCH64_ARCH(NAME, CORE, ARCH_IDENT, ARCH_REV, FLAGS) \ | |
2144 | {NAME, CORE, CORE, AARCH64_ARCH_##ARCH_IDENT, ARCH_REV, FLAGS, NULL}, | |
2145 | #include "aarch64-arches.def" | |
393ae126 KT |
2146 | {NULL, aarch64_none, aarch64_none, aarch64_no_arch, 0, 0, NULL} |
2147 | }; | |
2148 | ||
43e9d192 IB |
2149 | /* Processor cores implementing AArch64. */ |
2150 | static const struct processor all_cores[] = | |
2151 | { | |
e8fcc9fa | 2152 | #define AARCH64_CORE(NAME, IDENT, SCHED, ARCH, FLAGS, COSTS, IMP, PART, VARIANT) \ |
393ae126 KT |
2153 | {NAME, IDENT, SCHED, AARCH64_ARCH_##ARCH, \ |
2154 | all_architectures[AARCH64_ARCH_##ARCH].architecture_version, \ | |
2155 | FLAGS, &COSTS##_tunings}, | |
43e9d192 | 2156 | #include "aarch64-cores.def" |
393ae126 KT |
2157 | {"generic", generic, cortexa53, AARCH64_ARCH_8A, 8, |
2158 | AARCH64_FL_FOR_ARCH8, &generic_tunings}, | |
2159 | {NULL, aarch64_none, aarch64_none, aarch64_no_arch, 0, 0, NULL} | |
43e9d192 IB |
2160 | }; |
2161 | ||
43e9d192 | 2162 | |
361fb3ee KT |
2163 | /* Target specification. These are populated by the -march, -mtune, -mcpu |
2164 | handling code or by target attributes. */ | |
43e9d192 IB |
2165 | static const struct processor *selected_arch; |
2166 | static const struct processor *selected_cpu; | |
2167 | static const struct processor *selected_tune; | |
2168 | ||
8fc16d72 ST |
2169 | enum aarch64_key_type aarch64_ra_sign_key = AARCH64_KEY_A; |
2170 | ||
b175b679 JG |
2171 | /* The current tuning set. */ |
2172 | struct tune_params aarch64_tune_params = generic_tunings; | |
2173 | ||
c600df9a RS |
2174 | /* Check whether an 'aarch64_vector_pcs' attribute is valid. */ |
2175 | ||
2176 | static tree | |
2177 | handle_aarch64_vector_pcs_attribute (tree *node, tree name, tree, | |
2178 | int, bool *no_add_attrs) | |
2179 | { | |
2180 | /* Since we set fn_type_req to true, the caller should have checked | |
2181 | this for us. */ | |
2182 | gcc_assert (FUNC_OR_METHOD_TYPE_P (*node)); | |
2183 | switch ((arm_pcs) fntype_abi (*node).id ()) | |
2184 | { | |
2185 | case ARM_PCS_AAPCS64: | |
2186 | case ARM_PCS_SIMD: | |
2187 | return NULL_TREE; | |
2188 | ||
2189 | case ARM_PCS_SVE: | |
2190 | error ("the %qE attribute cannot be applied to an SVE function type", | |
2191 | name); | |
2192 | *no_add_attrs = true; | |
2193 | return NULL_TREE; | |
2194 | ||
2195 | case ARM_PCS_TLSDESC: | |
2196 | case ARM_PCS_UNKNOWN: | |
2197 | break; | |
2198 | } | |
2199 | gcc_unreachable (); | |
2200 | } | |
2201 | ||
a0d0b980 SE |
2202 | /* Table of machine attributes. */ |
2203 | static const struct attribute_spec aarch64_attribute_table[] = | |
2204 | { | |
2205 | /* { name, min_len, max_len, decl_req, type_req, fn_type_req, | |
2206 | affects_type_identity, handler, exclude } */ | |
c600df9a RS |
2207 | { "aarch64_vector_pcs", 0, 0, false, true, true, true, |
2208 | handle_aarch64_vector_pcs_attribute, NULL }, | |
38e62001 RS |
2209 | { "arm_sve_vector_bits", 1, 1, false, true, false, true, |
2210 | aarch64_sve::handle_arm_sve_vector_bits_attribute, | |
2211 | NULL }, | |
31427b97 | 2212 | { "Advanced SIMD type", 1, 1, false, true, false, true, NULL, NULL }, |
683e93d1 | 2213 | { "SVE type", 3, 3, false, true, false, true, NULL, NULL }, |
5002dae3 | 2214 | { "SVE sizeless type", 0, 0, false, true, false, true, NULL, NULL }, |
a0d0b980 SE |
2215 | { NULL, 0, 0, false, false, false, false, NULL, NULL } |
2216 | }; | |
2217 | ||
43e9d192 IB |
2218 | #define AARCH64_CPU_DEFAULT_FLAGS ((selected_cpu) ? selected_cpu->flags : 0) |
2219 | ||
2220 | /* An ISA extension in the co-processor and main instruction set space. */ | |
2221 | struct aarch64_option_extension | |
2222 | { | |
2223 | const char *const name; | |
2224 | const unsigned long flags_on; | |
2225 | const unsigned long flags_off; | |
2226 | }; | |
2227 | ||
43e9d192 IB |
2228 | typedef enum aarch64_cond_code |
2229 | { | |
2230 | AARCH64_EQ = 0, AARCH64_NE, AARCH64_CS, AARCH64_CC, AARCH64_MI, AARCH64_PL, | |
2231 | AARCH64_VS, AARCH64_VC, AARCH64_HI, AARCH64_LS, AARCH64_GE, AARCH64_LT, | |
2232 | AARCH64_GT, AARCH64_LE, AARCH64_AL, AARCH64_NV | |
2233 | } | |
2234 | aarch64_cc; | |
2235 | ||
2236 | #define AARCH64_INVERSE_CONDITION_CODE(X) ((aarch64_cc) (((int) X) ^ 1)) | |
2237 | ||
efac62a3 ST |
2238 | struct aarch64_branch_protect_type |
2239 | { | |
2240 | /* The type's name that the user passes to the branch-protection option | |
2241 | string. */ | |
2242 | const char* name; | |
2243 | /* Function to handle the protection type and set global variables. | |
2244 | First argument is the string token corresponding with this type and the | |
2245 | second argument is the next token in the option string. | |
2246 | Return values: | |
2247 | * AARCH64_PARSE_OK: Handling was sucessful. | |
2248 | * AARCH64_INVALID_ARG: The type is invalid in this context and the caller | |
2249 | should print an error. | |
2250 | * AARCH64_INVALID_FEATURE: The type is invalid and the handler prints its | |
2251 | own error. */ | |
2252 | enum aarch64_parse_opt_result (*handler)(char*, char*); | |
2253 | /* A list of types that can follow this type in the option string. */ | |
2254 | const aarch64_branch_protect_type* subtypes; | |
2255 | unsigned int num_subtypes; | |
2256 | }; | |
2257 | ||
2258 | static enum aarch64_parse_opt_result | |
2259 | aarch64_handle_no_branch_protection (char* str, char* rest) | |
2260 | { | |
2261 | aarch64_ra_sign_scope = AARCH64_FUNCTION_NONE; | |
30afdf34 | 2262 | aarch64_enable_bti = 0; |
efac62a3 ST |
2263 | if (rest) |
2264 | { | |
2265 | error ("unexpected %<%s%> after %<%s%>", rest, str); | |
2266 | return AARCH64_PARSE_INVALID_FEATURE; | |
2267 | } | |
2268 | return AARCH64_PARSE_OK; | |
2269 | } | |
2270 | ||
2271 | static enum aarch64_parse_opt_result | |
2272 | aarch64_handle_standard_branch_protection (char* str, char* rest) | |
2273 | { | |
2274 | aarch64_ra_sign_scope = AARCH64_FUNCTION_NON_LEAF; | |
8fc16d72 | 2275 | aarch64_ra_sign_key = AARCH64_KEY_A; |
30afdf34 | 2276 | aarch64_enable_bti = 1; |
efac62a3 ST |
2277 | if (rest) |
2278 | { | |
2279 | error ("unexpected %<%s%> after %<%s%>", rest, str); | |
2280 | return AARCH64_PARSE_INVALID_FEATURE; | |
2281 | } | |
2282 | return AARCH64_PARSE_OK; | |
2283 | } | |
2284 | ||
2285 | static enum aarch64_parse_opt_result | |
2286 | aarch64_handle_pac_ret_protection (char* str ATTRIBUTE_UNUSED, | |
2287 | char* rest ATTRIBUTE_UNUSED) | |
2288 | { | |
2289 | aarch64_ra_sign_scope = AARCH64_FUNCTION_NON_LEAF; | |
8fc16d72 | 2290 | aarch64_ra_sign_key = AARCH64_KEY_A; |
efac62a3 ST |
2291 | return AARCH64_PARSE_OK; |
2292 | } | |
2293 | ||
2294 | static enum aarch64_parse_opt_result | |
2295 | aarch64_handle_pac_ret_leaf (char* str ATTRIBUTE_UNUSED, | |
2296 | char* rest ATTRIBUTE_UNUSED) | |
2297 | { | |
2298 | aarch64_ra_sign_scope = AARCH64_FUNCTION_ALL; | |
2299 | return AARCH64_PARSE_OK; | |
2300 | } | |
2301 | ||
8fc16d72 ST |
2302 | static enum aarch64_parse_opt_result |
2303 | aarch64_handle_pac_ret_b_key (char* str ATTRIBUTE_UNUSED, | |
2304 | char* rest ATTRIBUTE_UNUSED) | |
2305 | { | |
2306 | aarch64_ra_sign_key = AARCH64_KEY_B; | |
2307 | return AARCH64_PARSE_OK; | |
2308 | } | |
2309 | ||
30afdf34 SD |
2310 | static enum aarch64_parse_opt_result |
2311 | aarch64_handle_bti_protection (char* str ATTRIBUTE_UNUSED, | |
2312 | char* rest ATTRIBUTE_UNUSED) | |
2313 | { | |
2314 | aarch64_enable_bti = 1; | |
2315 | return AARCH64_PARSE_OK; | |
2316 | } | |
2317 | ||
efac62a3 ST |
2318 | static const struct aarch64_branch_protect_type aarch64_pac_ret_subtypes[] = { |
2319 | { "leaf", aarch64_handle_pac_ret_leaf, NULL, 0 }, | |
8fc16d72 | 2320 | { "b-key", aarch64_handle_pac_ret_b_key, NULL, 0 }, |
efac62a3 ST |
2321 | { NULL, NULL, NULL, 0 } |
2322 | }; | |
2323 | ||
2324 | static const struct aarch64_branch_protect_type aarch64_branch_protect_types[] = { | |
2325 | { "none", aarch64_handle_no_branch_protection, NULL, 0 }, | |
2326 | { "standard", aarch64_handle_standard_branch_protection, NULL, 0 }, | |
2327 | { "pac-ret", aarch64_handle_pac_ret_protection, aarch64_pac_ret_subtypes, | |
2328 | ARRAY_SIZE (aarch64_pac_ret_subtypes) }, | |
30afdf34 | 2329 | { "bti", aarch64_handle_bti_protection, NULL, 0 }, |
efac62a3 ST |
2330 | { NULL, NULL, NULL, 0 } |
2331 | }; | |
2332 | ||
43e9d192 IB |
2333 | /* The condition codes of the processor, and the inverse function. */ |
2334 | static const char * const aarch64_condition_codes[] = | |
2335 | { | |
2336 | "eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc", | |
2337 | "hi", "ls", "ge", "lt", "gt", "le", "al", "nv" | |
2338 | }; | |
2339 | ||
57d6f4d0 RS |
2340 | /* The preferred condition codes for SVE conditions. */ |
2341 | static const char *const aarch64_sve_condition_codes[] = | |
2342 | { | |
2343 | "none", "any", "nlast", "last", "first", "nfrst", "vs", "vc", | |
2344 | "pmore", "plast", "tcont", "tstop", "gt", "le", "al", "nv" | |
2345 | }; | |
2346 | ||
0b1fe8cf RS |
2347 | /* Return the assembly token for svpattern value VALUE. */ |
2348 | ||
2349 | static const char * | |
2350 | svpattern_token (enum aarch64_svpattern pattern) | |
2351 | { | |
2352 | switch (pattern) | |
2353 | { | |
2354 | #define CASE(UPPER, LOWER, VALUE) case AARCH64_SV_##UPPER: return #LOWER; | |
2355 | AARCH64_FOR_SVPATTERN (CASE) | |
2356 | #undef CASE | |
2357 | case AARCH64_NUM_SVPATTERNS: | |
2358 | break; | |
2359 | } | |
2360 | gcc_unreachable (); | |
2361 | } | |
2362 | ||
38e62001 RS |
2363 | /* Return the location of a piece that is known to be passed or returned |
2364 | in registers. FIRST_ZR is the first unused vector argument register | |
2365 | and FIRST_PR is the first unused predicate argument register. */ | |
2366 | ||
2367 | rtx | |
2368 | pure_scalable_type_info::piece::get_rtx (unsigned int first_zr, | |
2369 | unsigned int first_pr) const | |
2370 | { | |
2371 | gcc_assert (VECTOR_MODE_P (mode) | |
2372 | && first_zr + num_zr <= V0_REGNUM + NUM_FP_ARG_REGS | |
2373 | && first_pr + num_pr <= P0_REGNUM + NUM_PR_ARG_REGS); | |
2374 | ||
2375 | if (num_zr > 0 && num_pr == 0) | |
2376 | return gen_rtx_REG (mode, first_zr); | |
2377 | ||
2378 | if (num_zr == 0 && num_pr == 1) | |
2379 | return gen_rtx_REG (mode, first_pr); | |
2380 | ||
2381 | gcc_unreachable (); | |
2382 | } | |
2383 | ||
2384 | /* Return the total number of vector registers required by the PST. */ | |
2385 | ||
2386 | unsigned int | |
2387 | pure_scalable_type_info::num_zr () const | |
2388 | { | |
2389 | unsigned int res = 0; | |
2390 | for (unsigned int i = 0; i < pieces.length (); ++i) | |
2391 | res += pieces[i].num_zr; | |
2392 | return res; | |
2393 | } | |
2394 | ||
2395 | /* Return the total number of predicate registers required by the PST. */ | |
2396 | ||
2397 | unsigned int | |
2398 | pure_scalable_type_info::num_pr () const | |
2399 | { | |
2400 | unsigned int res = 0; | |
2401 | for (unsigned int i = 0; i < pieces.length (); ++i) | |
2402 | res += pieces[i].num_pr; | |
2403 | return res; | |
2404 | } | |
2405 | ||
2406 | /* Return the location of a PST that is known to be passed or returned | |
2407 | in registers. FIRST_ZR is the first unused vector argument register | |
2408 | and FIRST_PR is the first unused predicate argument register. */ | |
2409 | ||
2410 | rtx | |
2411 | pure_scalable_type_info::get_rtx (machine_mode mode, | |
2412 | unsigned int first_zr, | |
2413 | unsigned int first_pr) const | |
2414 | { | |
2415 | /* Try to return a single REG if possible. This leads to better | |
2416 | code generation; it isn't required for correctness. */ | |
2417 | if (mode == pieces[0].mode) | |
2418 | { | |
2419 | gcc_assert (pieces.length () == 1); | |
2420 | return pieces[0].get_rtx (first_zr, first_pr); | |
2421 | } | |
2422 | ||
2423 | /* Build up a PARALLEL that contains the individual pieces. */ | |
2424 | rtvec rtxes = rtvec_alloc (pieces.length ()); | |
2425 | for (unsigned int i = 0; i < pieces.length (); ++i) | |
2426 | { | |
2427 | rtx reg = pieces[i].get_rtx (first_zr, first_pr); | |
2428 | rtx offset = gen_int_mode (pieces[i].offset, Pmode); | |
2429 | RTVEC_ELT (rtxes, i) = gen_rtx_EXPR_LIST (VOIDmode, reg, offset); | |
2430 | first_zr += pieces[i].num_zr; | |
2431 | first_pr += pieces[i].num_pr; | |
2432 | } | |
2433 | return gen_rtx_PARALLEL (mode, rtxes); | |
2434 | } | |
2435 | ||
2436 | /* Analyze whether TYPE is a Pure Scalable Type according to the rules | |
2437 | in the AAPCS64. */ | |
2438 | ||
2439 | pure_scalable_type_info::analysis_result | |
2440 | pure_scalable_type_info::analyze (const_tree type) | |
2441 | { | |
2442 | /* Prevent accidental reuse. */ | |
2443 | gcc_assert (pieces.is_empty ()); | |
2444 | ||
2445 | /* No code will be generated for erroneous types, so we won't establish | |
2446 | an ABI mapping. */ | |
2447 | if (type == error_mark_node) | |
2448 | return NO_ABI_IDENTITY; | |
2449 | ||
2450 | /* Zero-sized types disappear in the language->ABI mapping. */ | |
2451 | if (TYPE_SIZE (type) && integer_zerop (TYPE_SIZE (type))) | |
2452 | return NO_ABI_IDENTITY; | |
2453 | ||
2454 | /* Check for SVTs, SPTs, and built-in tuple types that map to PSTs. */ | |
2455 | piece p = {}; | |
2456 | if (aarch64_sve::builtin_type_p (type, &p.num_zr, &p.num_pr)) | |
2457 | { | |
2458 | machine_mode mode = TYPE_MODE_RAW (type); | |
2459 | gcc_assert (VECTOR_MODE_P (mode) | |
2460 | && (!TARGET_SVE || aarch64_sve_mode_p (mode))); | |
2461 | ||
2462 | p.mode = p.orig_mode = mode; | |
2463 | add_piece (p); | |
2464 | return IS_PST; | |
2465 | } | |
2466 | ||
2467 | /* Check for user-defined PSTs. */ | |
2468 | if (TREE_CODE (type) == ARRAY_TYPE) | |
2469 | return analyze_array (type); | |
2470 | if (TREE_CODE (type) == RECORD_TYPE) | |
2471 | return analyze_record (type); | |
2472 | ||
2473 | return ISNT_PST; | |
2474 | } | |
2475 | ||
2476 | /* Analyze a type that is known not to be passed or returned in memory. | |
2477 | Return true if it has an ABI identity and is a Pure Scalable Type. */ | |
2478 | ||
2479 | bool | |
2480 | pure_scalable_type_info::analyze_registers (const_tree type) | |
2481 | { | |
2482 | analysis_result result = analyze (type); | |
2483 | gcc_assert (result != DOESNT_MATTER); | |
2484 | return result == IS_PST; | |
2485 | } | |
2486 | ||
2487 | /* Subroutine of analyze for handling ARRAY_TYPEs. */ | |
2488 | ||
2489 | pure_scalable_type_info::analysis_result | |
2490 | pure_scalable_type_info::analyze_array (const_tree type) | |
2491 | { | |
2492 | /* Analyze the element type. */ | |
2493 | pure_scalable_type_info element_info; | |
2494 | analysis_result result = element_info.analyze (TREE_TYPE (type)); | |
2495 | if (result != IS_PST) | |
2496 | return result; | |
2497 | ||
2498 | /* An array of unknown, flexible or variable length will be passed and | |
2499 | returned by reference whatever we do. */ | |
2500 | tree nelts_minus_one = array_type_nelts (type); | |
2501 | if (!tree_fits_uhwi_p (nelts_minus_one)) | |
2502 | return DOESNT_MATTER; | |
2503 | ||
2504 | /* Likewise if the array is constant-sized but too big to be interesting. | |
2505 | The double checks against MAX_PIECES are to protect against overflow. */ | |
2506 | unsigned HOST_WIDE_INT count = tree_to_uhwi (nelts_minus_one); | |
2507 | if (count > MAX_PIECES) | |
2508 | return DOESNT_MATTER; | |
2509 | count += 1; | |
2510 | if (count * element_info.pieces.length () > MAX_PIECES) | |
2511 | return DOESNT_MATTER; | |
2512 | ||
2513 | /* The above checks should have weeded out elements of unknown size. */ | |
2514 | poly_uint64 element_bytes; | |
2515 | if (!poly_int_tree_p (TYPE_SIZE_UNIT (TREE_TYPE (type)), &element_bytes)) | |
2516 | gcc_unreachable (); | |
2517 | ||
2518 | /* Build up the list of individual vectors and predicates. */ | |
2519 | gcc_assert (!element_info.pieces.is_empty ()); | |
2520 | for (unsigned int i = 0; i < count; ++i) | |
2521 | for (unsigned int j = 0; j < element_info.pieces.length (); ++j) | |
2522 | { | |
2523 | piece p = element_info.pieces[j]; | |
2524 | p.offset += i * element_bytes; | |
2525 | add_piece (p); | |
2526 | } | |
2527 | return IS_PST; | |
2528 | } | |
2529 | ||
2530 | /* Subroutine of analyze for handling RECORD_TYPEs. */ | |
2531 | ||
2532 | pure_scalable_type_info::analysis_result | |
2533 | pure_scalable_type_info::analyze_record (const_tree type) | |
2534 | { | |
2535 | for (tree field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field)) | |
2536 | { | |
2537 | if (TREE_CODE (field) != FIELD_DECL) | |
2538 | continue; | |
2539 | ||
2540 | /* Zero-sized fields disappear in the language->ABI mapping. */ | |
2541 | if (DECL_SIZE (field) && integer_zerop (DECL_SIZE (field))) | |
2542 | continue; | |
2543 | ||
2544 | /* All fields with an ABI identity must be PSTs for the record as | |
2545 | a whole to be a PST. If any individual field is too big to be | |
2546 | interesting then the record is too. */ | |
2547 | pure_scalable_type_info field_info; | |
2548 | analysis_result subresult = field_info.analyze (TREE_TYPE (field)); | |
2549 | if (subresult == NO_ABI_IDENTITY) | |
2550 | continue; | |
2551 | if (subresult != IS_PST) | |
2552 | return subresult; | |
2553 | ||
2554 | /* Since all previous fields are PSTs, we ought to be able to track | |
2555 | the field offset using poly_ints. */ | |
2556 | tree bitpos = bit_position (field); | |
2557 | gcc_assert (poly_int_tree_p (bitpos)); | |
2558 | ||
2559 | /* For the same reason, it shouldn't be possible to create a PST field | |
2560 | whose offset isn't byte-aligned. */ | |
2561 | poly_widest_int wide_bytepos = exact_div (wi::to_poly_widest (bitpos), | |
2562 | BITS_PER_UNIT); | |
2563 | ||
2564 | /* Punt if the record is too big to be interesting. */ | |
2565 | poly_uint64 bytepos; | |
2566 | if (!wide_bytepos.to_uhwi (&bytepos) | |
2567 | || pieces.length () + field_info.pieces.length () > MAX_PIECES) | |
2568 | return DOESNT_MATTER; | |
2569 | ||
2570 | /* Add the individual vectors and predicates in the field to the | |
2571 | record's list. */ | |
2572 | gcc_assert (!field_info.pieces.is_empty ()); | |
2573 | for (unsigned int i = 0; i < field_info.pieces.length (); ++i) | |
2574 | { | |
2575 | piece p = field_info.pieces[i]; | |
2576 | p.offset += bytepos; | |
2577 | add_piece (p); | |
2578 | } | |
2579 | } | |
2580 | /* Empty structures disappear in the language->ABI mapping. */ | |
2581 | return pieces.is_empty () ? NO_ABI_IDENTITY : IS_PST; | |
2582 | } | |
2583 | ||
2584 | /* Add P to the list of pieces in the type. */ | |
2585 | ||
2586 | void | |
2587 | pure_scalable_type_info::add_piece (const piece &p) | |
2588 | { | |
2589 | /* Try to fold the new piece into the previous one to form a | |
2590 | single-mode PST. For example, if we see three consecutive vectors | |
2591 | of the same mode, we can represent them using the corresponding | |
2592 | 3-tuple mode. | |
2593 | ||
2594 | This is purely an optimization. */ | |
2595 | if (!pieces.is_empty ()) | |
2596 | { | |
2597 | piece &prev = pieces.last (); | |
2598 | gcc_assert (VECTOR_MODE_P (p.mode) && VECTOR_MODE_P (prev.mode)); | |
2599 | unsigned int nelems1, nelems2; | |
2600 | if (prev.orig_mode == p.orig_mode | |
2601 | && known_eq (prev.offset + GET_MODE_SIZE (prev.mode), p.offset) | |
2602 | && constant_multiple_p (GET_MODE_NUNITS (prev.mode), | |
2603 | GET_MODE_NUNITS (p.orig_mode), &nelems1) | |
2604 | && constant_multiple_p (GET_MODE_NUNITS (p.mode), | |
2605 | GET_MODE_NUNITS (p.orig_mode), &nelems2) | |
2606 | && targetm.array_mode (p.orig_mode, | |
2607 | nelems1 + nelems2).exists (&prev.mode)) | |
2608 | { | |
2609 | prev.num_zr += p.num_zr; | |
2610 | prev.num_pr += p.num_pr; | |
2611 | return; | |
2612 | } | |
2613 | } | |
2614 | pieces.quick_push (p); | |
2615 | } | |
2616 | ||
2617 | /* Return true if at least one possible value of type TYPE includes at | |
2618 | least one object of Pure Scalable Type, in the sense of the AAPCS64. | |
2619 | ||
2620 | This is a relatively expensive test for some types, so it should | |
2621 | generally be made as late as possible. */ | |
2622 | ||
2623 | static bool | |
2624 | aarch64_some_values_include_pst_objects_p (const_tree type) | |
2625 | { | |
2626 | if (TYPE_SIZE (type) && integer_zerop (TYPE_SIZE (type))) | |
2627 | return false; | |
2628 | ||
2629 | if (aarch64_sve::builtin_type_p (type)) | |
2630 | return true; | |
2631 | ||
2632 | if (TREE_CODE (type) == ARRAY_TYPE || TREE_CODE (type) == COMPLEX_TYPE) | |
2633 | return aarch64_some_values_include_pst_objects_p (TREE_TYPE (type)); | |
2634 | ||
2635 | if (RECORD_OR_UNION_TYPE_P (type)) | |
2636 | for (tree field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field)) | |
2637 | if (TREE_CODE (field) == FIELD_DECL | |
2638 | && aarch64_some_values_include_pst_objects_p (TREE_TYPE (field))) | |
2639 | return true; | |
2640 | ||
2641 | return false; | |
2642 | } | |
2643 | ||
002ffd3c RS |
2644 | /* Return the descriptor of the SIMD ABI. */ |
2645 | ||
2646 | static const predefined_function_abi & | |
2647 | aarch64_simd_abi (void) | |
2648 | { | |
2649 | predefined_function_abi &simd_abi = function_abis[ARM_PCS_SIMD]; | |
2650 | if (!simd_abi.initialized_p ()) | |
2651 | { | |
2652 | HARD_REG_SET full_reg_clobbers | |
2653 | = default_function_abi.full_reg_clobbers (); | |
2654 | for (int regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) | |
2655 | if (FP_SIMD_SAVED_REGNUM_P (regno)) | |
2656 | CLEAR_HARD_REG_BIT (full_reg_clobbers, regno); | |
2657 | simd_abi.initialize (ARM_PCS_SIMD, full_reg_clobbers); | |
2658 | } | |
2659 | return simd_abi; | |
2660 | } | |
2661 | ||
c600df9a RS |
2662 | /* Return the descriptor of the SVE PCS. */ |
2663 | ||
2664 | static const predefined_function_abi & | |
2665 | aarch64_sve_abi (void) | |
2666 | { | |
2667 | predefined_function_abi &sve_abi = function_abis[ARM_PCS_SVE]; | |
2668 | if (!sve_abi.initialized_p ()) | |
2669 | { | |
2670 | HARD_REG_SET full_reg_clobbers | |
2671 | = default_function_abi.full_reg_clobbers (); | |
2672 | for (int regno = V8_REGNUM; regno <= V23_REGNUM; ++regno) | |
2673 | CLEAR_HARD_REG_BIT (full_reg_clobbers, regno); | |
cb26919c | 2674 | for (int regno = P4_REGNUM; regno <= P15_REGNUM; ++regno) |
c600df9a RS |
2675 | CLEAR_HARD_REG_BIT (full_reg_clobbers, regno); |
2676 | sve_abi.initialize (ARM_PCS_SVE, full_reg_clobbers); | |
2677 | } | |
2678 | return sve_abi; | |
2679 | } | |
2680 | ||
74b27d8e RS |
2681 | /* If X is an UNSPEC_SALT_ADDR expression, return the address that it |
2682 | wraps, otherwise return X itself. */ | |
2683 | ||
2684 | static rtx | |
2685 | strip_salt (rtx x) | |
2686 | { | |
2687 | rtx search = x; | |
2688 | if (GET_CODE (search) == CONST) | |
2689 | search = XEXP (search, 0); | |
2690 | if (GET_CODE (search) == UNSPEC && XINT (search, 1) == UNSPEC_SALT_ADDR) | |
2691 | x = XVECEXP (search, 0, 0); | |
2692 | return x; | |
2693 | } | |
2694 | ||
2695 | /* Like strip_offset, but also strip any UNSPEC_SALT_ADDR from the | |
2696 | expression. */ | |
2697 | ||
2698 | static rtx | |
2699 | strip_offset_and_salt (rtx addr, poly_int64 *offset) | |
2700 | { | |
2701 | return strip_salt (strip_offset (addr, offset)); | |
2702 | } | |
2703 | ||
973d2e01 TP |
2704 | /* Generate code to enable conditional branches in functions over 1 MiB. */ |
2705 | const char * | |
2706 | aarch64_gen_far_branch (rtx * operands, int pos_label, const char * dest, | |
2707 | const char * branch_format) | |
2708 | { | |
2709 | rtx_code_label * tmp_label = gen_label_rtx (); | |
2710 | char label_buf[256]; | |
2711 | char buffer[128]; | |
2712 | ASM_GENERATE_INTERNAL_LABEL (label_buf, dest, | |
2713 | CODE_LABEL_NUMBER (tmp_label)); | |
2714 | const char *label_ptr = targetm.strip_name_encoding (label_buf); | |
2715 | rtx dest_label = operands[pos_label]; | |
2716 | operands[pos_label] = tmp_label; | |
2717 | ||
2718 | snprintf (buffer, sizeof (buffer), "%s%s", branch_format, label_ptr); | |
2719 | output_asm_insn (buffer, operands); | |
2720 | ||
2721 | snprintf (buffer, sizeof (buffer), "b\t%%l%d\n%s:", pos_label, label_ptr); | |
2722 | operands[pos_label] = dest_label; | |
2723 | output_asm_insn (buffer, operands); | |
2724 | return ""; | |
2725 | } | |
2726 | ||
261fb553 | 2727 | void |
fc29dfc9 | 2728 | aarch64_err_no_fpadvsimd (machine_mode mode) |
261fb553 | 2729 | { |
261fb553 | 2730 | if (TARGET_GENERAL_REGS_ONLY) |
fc29dfc9 SE |
2731 | if (FLOAT_MODE_P (mode)) |
2732 | error ("%qs is incompatible with the use of floating-point types", | |
2733 | "-mgeneral-regs-only"); | |
2734 | else | |
2735 | error ("%qs is incompatible with the use of vector types", | |
2736 | "-mgeneral-regs-only"); | |
261fb553 | 2737 | else |
fc29dfc9 SE |
2738 | if (FLOAT_MODE_P (mode)) |
2739 | error ("%qs feature modifier is incompatible with the use of" | |
2740 | " floating-point types", "+nofp"); | |
2741 | else | |
2742 | error ("%qs feature modifier is incompatible with the use of" | |
2743 | " vector types", "+nofp"); | |
261fb553 AL |
2744 | } |
2745 | ||
c0e0174b RS |
2746 | /* Report when we try to do something that requires SVE when SVE is disabled. |
2747 | This is an error of last resort and isn't very high-quality. It usually | |
2748 | involves attempts to measure the vector length in some way. */ | |
2749 | static void | |
2750 | aarch64_report_sve_required (void) | |
2751 | { | |
2752 | static bool reported_p = false; | |
2753 | ||
2754 | /* Avoid reporting a slew of messages for a single oversight. */ | |
2755 | if (reported_p) | |
2756 | return; | |
2757 | ||
2758 | error ("this operation requires the SVE ISA extension"); | |
2759 | inform (input_location, "you can enable SVE using the command-line" | |
2760 | " option %<-march%>, or by using the %<target%>" | |
2761 | " attribute or pragma"); | |
2762 | reported_p = true; | |
2763 | } | |
2764 | ||
183bfdaf RS |
2765 | /* Return true if REGNO is P0-P15 or one of the special FFR-related |
2766 | registers. */ | |
2767 | inline bool | |
2768 | pr_or_ffr_regnum_p (unsigned int regno) | |
2769 | { | |
2770 | return PR_REGNUM_P (regno) || regno == FFR_REGNUM || regno == FFRT_REGNUM; | |
2771 | } | |
2772 | ||
c64f7d37 | 2773 | /* Implement TARGET_IRA_CHANGE_PSEUDO_ALLOCNO_CLASS. |
2eb2847e WD |
2774 | The register allocator chooses POINTER_AND_FP_REGS if FP_REGS and |
2775 | GENERAL_REGS have the same cost - even if POINTER_AND_FP_REGS has a much | |
2776 | higher cost. POINTER_AND_FP_REGS is also used if the cost of both FP_REGS | |
2777 | and GENERAL_REGS is lower than the memory cost (in this case the best class | |
2778 | is the lowest cost one). Using POINTER_AND_FP_REGS irrespectively of its | |
2779 | cost results in bad allocations with many redundant int<->FP moves which | |
2780 | are expensive on various cores. | |
2781 | To avoid this we don't allow POINTER_AND_FP_REGS as the allocno class, but | |
2782 | force a decision between FP_REGS and GENERAL_REGS. We use the allocno class | |
2783 | if it isn't POINTER_AND_FP_REGS. Similarly, use the best class if it isn't | |
2784 | POINTER_AND_FP_REGS. Otherwise set the allocno class depending on the mode. | |
31e2b5a3 WD |
2785 | The result of this is that it is no longer inefficient to have a higher |
2786 | memory move cost than the register move cost. | |
2787 | */ | |
c64f7d37 WD |
2788 | |
2789 | static reg_class_t | |
31e2b5a3 WD |
2790 | aarch64_ira_change_pseudo_allocno_class (int regno, reg_class_t allocno_class, |
2791 | reg_class_t best_class) | |
c64f7d37 | 2792 | { |
b8506a8a | 2793 | machine_mode mode; |
c64f7d37 | 2794 | |
67e5c59a RS |
2795 | if (!reg_class_subset_p (GENERAL_REGS, allocno_class) |
2796 | || !reg_class_subset_p (FP_REGS, allocno_class)) | |
c64f7d37 WD |
2797 | return allocno_class; |
2798 | ||
67e5c59a RS |
2799 | if (!reg_class_subset_p (GENERAL_REGS, best_class) |
2800 | || !reg_class_subset_p (FP_REGS, best_class)) | |
31e2b5a3 WD |
2801 | return best_class; |
2802 | ||
c64f7d37 WD |
2803 | mode = PSEUDO_REGNO_MODE (regno); |
2804 | return FLOAT_MODE_P (mode) || VECTOR_MODE_P (mode) ? FP_REGS : GENERAL_REGS; | |
2805 | } | |
2806 | ||
26e0ff94 | 2807 | static unsigned int |
b8506a8a | 2808 | aarch64_min_divisions_for_recip_mul (machine_mode mode) |
26e0ff94 | 2809 | { |
50093a33 | 2810 | if (GET_MODE_UNIT_SIZE (mode) == 4) |
b175b679 JG |
2811 | return aarch64_tune_params.min_div_recip_mul_sf; |
2812 | return aarch64_tune_params.min_div_recip_mul_df; | |
26e0ff94 WD |
2813 | } |
2814 | ||
b5b33e11 | 2815 | /* Return the reassociation width of treeop OPC with mode MODE. */ |
cee66c68 | 2816 | static int |
b5b33e11 | 2817 | aarch64_reassociation_width (unsigned opc, machine_mode mode) |
cee66c68 WD |
2818 | { |
2819 | if (VECTOR_MODE_P (mode)) | |
b175b679 | 2820 | return aarch64_tune_params.vec_reassoc_width; |
cee66c68 | 2821 | if (INTEGRAL_MODE_P (mode)) |
b175b679 | 2822 | return aarch64_tune_params.int_reassoc_width; |
b5b33e11 WD |
2823 | /* Avoid reassociating floating point addition so we emit more FMAs. */ |
2824 | if (FLOAT_MODE_P (mode) && opc != PLUS_EXPR) | |
b175b679 | 2825 | return aarch64_tune_params.fp_reassoc_width; |
cee66c68 WD |
2826 | return 1; |
2827 | } | |
2828 | ||
43e9d192 IB |
2829 | /* Provide a mapping from gcc register numbers to dwarf register numbers. */ |
2830 | unsigned | |
2831 | aarch64_dbx_register_number (unsigned regno) | |
2832 | { | |
2833 | if (GP_REGNUM_P (regno)) | |
2834 | return AARCH64_DWARF_R0 + regno - R0_REGNUM; | |
2835 | else if (regno == SP_REGNUM) | |
2836 | return AARCH64_DWARF_SP; | |
2837 | else if (FP_REGNUM_P (regno)) | |
2838 | return AARCH64_DWARF_V0 + regno - V0_REGNUM; | |
43cacb12 RS |
2839 | else if (PR_REGNUM_P (regno)) |
2840 | return AARCH64_DWARF_P0 + regno - P0_REGNUM; | |
2841 | else if (regno == VG_REGNUM) | |
2842 | return AARCH64_DWARF_VG; | |
43e9d192 IB |
2843 | |
2844 | /* Return values >= DWARF_FRAME_REGISTERS indicate that there is no | |
2845 | equivalent DWARF register. */ | |
2846 | return DWARF_FRAME_REGISTERS; | |
2847 | } | |
2848 | ||
d29f7dd5 RS |
2849 | /* If X is a CONST_DOUBLE, return its bit representation as a constant |
2850 | integer, otherwise return X unmodified. */ | |
2851 | static rtx | |
2852 | aarch64_bit_representation (rtx x) | |
2853 | { | |
2854 | if (CONST_DOUBLE_P (x)) | |
2855 | x = gen_lowpart (int_mode_for_mode (GET_MODE (x)).require (), x); | |
2856 | return x; | |
2857 | } | |
2858 | ||
3b924b0d RS |
2859 | /* Return an estimate for the number of quadwords in an SVE vector. This is |
2860 | equivalent to the number of Advanced SIMD vectors in an SVE vector. */ | |
2861 | static unsigned int | |
2862 | aarch64_estimated_sve_vq () | |
2863 | { | |
2864 | return estimated_poly_value (BITS_PER_SVE_VECTOR) / 128; | |
2865 | } | |
2866 | ||
43cacb12 RS |
2867 | /* Return true if MODE is an SVE predicate mode. */ |
2868 | static bool | |
2869 | aarch64_sve_pred_mode_p (machine_mode mode) | |
2870 | { | |
2871 | return (TARGET_SVE | |
2872 | && (mode == VNx16BImode | |
2873 | || mode == VNx8BImode | |
2874 | || mode == VNx4BImode | |
2875 | || mode == VNx2BImode)); | |
2876 | } | |
2877 | ||
2878 | /* Three mutually-exclusive flags describing a vector or predicate type. */ | |
2879 | const unsigned int VEC_ADVSIMD = 1; | |
2880 | const unsigned int VEC_SVE_DATA = 2; | |
2881 | const unsigned int VEC_SVE_PRED = 4; | |
2882 | /* Can be used in combination with VEC_ADVSIMD or VEC_SVE_DATA to indicate | |
2883 | a structure of 2, 3 or 4 vectors. */ | |
2884 | const unsigned int VEC_STRUCT = 8; | |
550a3380 RS |
2885 | /* Can be used in combination with VEC_SVE_DATA to indicate that the |
2886 | vector has fewer significant bytes than a full SVE vector. */ | |
2887 | const unsigned int VEC_PARTIAL = 16; | |
43cacb12 RS |
2888 | /* Useful combinations of the above. */ |
2889 | const unsigned int VEC_ANY_SVE = VEC_SVE_DATA | VEC_SVE_PRED; | |
2890 | const unsigned int VEC_ANY_DATA = VEC_ADVSIMD | VEC_SVE_DATA; | |
2891 | ||
2892 | /* Return a set of flags describing the vector properties of mode MODE. | |
2893 | Ignore modes that are not supported by the current target. */ | |
2894 | static unsigned int | |
2895 | aarch64_classify_vector_mode (machine_mode mode) | |
2896 | { | |
43cacb12 RS |
2897 | if (aarch64_sve_pred_mode_p (mode)) |
2898 | return VEC_SVE_PRED; | |
2899 | ||
806f69cd RS |
2900 | /* Make the decision based on the mode's enum value rather than its |
2901 | properties, so that we keep the correct classification regardless | |
2902 | of -msve-vector-bits. */ | |
2903 | switch (mode) | |
43cacb12 | 2904 | { |
550a3380 RS |
2905 | /* Partial SVE QI vectors. */ |
2906 | case E_VNx2QImode: | |
2907 | case E_VNx4QImode: | |
2908 | case E_VNx8QImode: | |
2909 | /* Partial SVE HI vectors. */ | |
2910 | case E_VNx2HImode: | |
2911 | case E_VNx4HImode: | |
2912 | /* Partial SVE SI vector. */ | |
2913 | case E_VNx2SImode: | |
cc68f7c2 RS |
2914 | /* Partial SVE HF vectors. */ |
2915 | case E_VNx2HFmode: | |
2916 | case E_VNx4HFmode: | |
6c3ce63b RS |
2917 | /* Partial SVE BF vectors. */ |
2918 | case E_VNx2BFmode: | |
2919 | case E_VNx4BFmode: | |
cc68f7c2 RS |
2920 | /* Partial SVE SF vector. */ |
2921 | case E_VNx2SFmode: | |
550a3380 RS |
2922 | return TARGET_SVE ? VEC_SVE_DATA | VEC_PARTIAL : 0; |
2923 | ||
806f69cd RS |
2924 | case E_VNx16QImode: |
2925 | case E_VNx8HImode: | |
2926 | case E_VNx4SImode: | |
2927 | case E_VNx2DImode: | |
02fcd8ac | 2928 | case E_VNx8BFmode: |
806f69cd RS |
2929 | case E_VNx8HFmode: |
2930 | case E_VNx4SFmode: | |
2931 | case E_VNx2DFmode: | |
2932 | return TARGET_SVE ? VEC_SVE_DATA : 0; | |
2933 | ||
2934 | /* x2 SVE vectors. */ | |
2935 | case E_VNx32QImode: | |
2936 | case E_VNx16HImode: | |
2937 | case E_VNx8SImode: | |
2938 | case E_VNx4DImode: | |
02fcd8ac | 2939 | case E_VNx16BFmode: |
806f69cd RS |
2940 | case E_VNx16HFmode: |
2941 | case E_VNx8SFmode: | |
2942 | case E_VNx4DFmode: | |
2943 | /* x3 SVE vectors. */ | |
2944 | case E_VNx48QImode: | |
2945 | case E_VNx24HImode: | |
2946 | case E_VNx12SImode: | |
2947 | case E_VNx6DImode: | |
02fcd8ac | 2948 | case E_VNx24BFmode: |
806f69cd RS |
2949 | case E_VNx24HFmode: |
2950 | case E_VNx12SFmode: | |
2951 | case E_VNx6DFmode: | |
2952 | /* x4 SVE vectors. */ | |
2953 | case E_VNx64QImode: | |
2954 | case E_VNx32HImode: | |
2955 | case E_VNx16SImode: | |
2956 | case E_VNx8DImode: | |
02fcd8ac | 2957 | case E_VNx32BFmode: |
806f69cd RS |
2958 | case E_VNx32HFmode: |
2959 | case E_VNx16SFmode: | |
2960 | case E_VNx8DFmode: | |
2961 | return TARGET_SVE ? VEC_SVE_DATA | VEC_STRUCT : 0; | |
2962 | ||
66f206b8 JW |
2963 | case E_OImode: |
2964 | case E_CImode: | |
2965 | case E_XImode: | |
2966 | return TARGET_SIMD ? VEC_ADVSIMD | VEC_STRUCT : 0; | |
2967 | ||
2968 | /* Structures of 64-bit Advanced SIMD vectors. */ | |
2969 | case E_V2x8QImode: | |
2970 | case E_V2x4HImode: | |
2971 | case E_V2x2SImode: | |
2972 | case E_V2x1DImode: | |
2973 | case E_V2x4BFmode: | |
2974 | case E_V2x4HFmode: | |
2975 | case E_V2x2SFmode: | |
2976 | case E_V2x1DFmode: | |
2977 | case E_V3x8QImode: | |
2978 | case E_V3x4HImode: | |
2979 | case E_V3x2SImode: | |
2980 | case E_V3x1DImode: | |
2981 | case E_V3x4BFmode: | |
2982 | case E_V3x4HFmode: | |
2983 | case E_V3x2SFmode: | |
2984 | case E_V3x1DFmode: | |
2985 | case E_V4x8QImode: | |
2986 | case E_V4x4HImode: | |
2987 | case E_V4x2SImode: | |
2988 | case E_V4x1DImode: | |
2989 | case E_V4x4BFmode: | |
2990 | case E_V4x4HFmode: | |
2991 | case E_V4x2SFmode: | |
2992 | case E_V4x1DFmode: | |
2993 | return TARGET_SIMD ? VEC_ADVSIMD | VEC_STRUCT | VEC_PARTIAL : 0; | |
2994 | ||
2995 | /* Structures of 128-bit Advanced SIMD vectors. */ | |
2996 | case E_V2x16QImode: | |
2997 | case E_V2x8HImode: | |
2998 | case E_V2x4SImode: | |
2999 | case E_V2x2DImode: | |
3000 | case E_V2x8BFmode: | |
3001 | case E_V2x8HFmode: | |
3002 | case E_V2x4SFmode: | |
3003 | case E_V2x2DFmode: | |
3004 | case E_V3x16QImode: | |
3005 | case E_V3x8HImode: | |
3006 | case E_V3x4SImode: | |
3007 | case E_V3x2DImode: | |
3008 | case E_V3x8BFmode: | |
3009 | case E_V3x8HFmode: | |
3010 | case E_V3x4SFmode: | |
3011 | case E_V3x2DFmode: | |
3012 | case E_V4x16QImode: | |
3013 | case E_V4x8HImode: | |
3014 | case E_V4x4SImode: | |
3015 | case E_V4x2DImode: | |
3016 | case E_V4x8BFmode: | |
3017 | case E_V4x8HFmode: | |
3018 | case E_V4x4SFmode: | |
3019 | case E_V4x2DFmode: | |
3020 | return TARGET_SIMD ? VEC_ADVSIMD | VEC_STRUCT : 0; | |
3021 | ||
806f69cd RS |
3022 | /* 64-bit Advanced SIMD vectors. */ |
3023 | case E_V8QImode: | |
3024 | case E_V4HImode: | |
3025 | case E_V2SImode: | |
3026 | /* ...E_V1DImode doesn't exist. */ | |
3027 | case E_V4HFmode: | |
abbe1ed2 | 3028 | case E_V4BFmode: |
806f69cd RS |
3029 | case E_V2SFmode: |
3030 | case E_V1DFmode: | |
3031 | /* 128-bit Advanced SIMD vectors. */ | |
3032 | case E_V16QImode: | |
3033 | case E_V8HImode: | |
3034 | case E_V4SImode: | |
3035 | case E_V2DImode: | |
3036 | case E_V8HFmode: | |
abbe1ed2 | 3037 | case E_V8BFmode: |
806f69cd RS |
3038 | case E_V4SFmode: |
3039 | case E_V2DFmode: | |
3040 | return TARGET_SIMD ? VEC_ADVSIMD : 0; | |
3041 | ||
3042 | default: | |
3043 | return 0; | |
43cacb12 | 3044 | } |
43cacb12 RS |
3045 | } |
3046 | ||
66f206b8 JW |
3047 | /* Return true if MODE is any of the Advanced SIMD structure modes. */ |
3048 | bool | |
3049 | aarch64_advsimd_struct_mode_p (machine_mode mode) | |
3050 | { | |
3051 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
3052 | return (vec_flags & VEC_ADVSIMD) && (vec_flags & VEC_STRUCT); | |
3053 | } | |
3054 | ||
3055 | /* Return true if MODE is an Advanced SIMD D-register structure mode. */ | |
3056 | static bool | |
3057 | aarch64_advsimd_partial_struct_mode_p (machine_mode mode) | |
3058 | { | |
3059 | return (aarch64_classify_vector_mode (mode) | |
3060 | == (VEC_ADVSIMD | VEC_STRUCT | VEC_PARTIAL)); | |
3061 | } | |
3062 | ||
3063 | /* Return true if MODE is an Advanced SIMD Q-register structure mode. */ | |
3064 | static bool | |
3065 | aarch64_advsimd_full_struct_mode_p (machine_mode mode) | |
3066 | { | |
3067 | return (aarch64_classify_vector_mode (mode) == (VEC_ADVSIMD | VEC_STRUCT)); | |
3068 | } | |
3069 | ||
43cacb12 RS |
3070 | /* Return true if MODE is any of the data vector modes, including |
3071 | structure modes. */ | |
43e9d192 | 3072 | static bool |
43cacb12 | 3073 | aarch64_vector_data_mode_p (machine_mode mode) |
43e9d192 | 3074 | { |
43cacb12 | 3075 | return aarch64_classify_vector_mode (mode) & VEC_ANY_DATA; |
43e9d192 IB |
3076 | } |
3077 | ||
5c38705d RS |
3078 | /* Return true if MODE is any form of SVE mode, including predicates, |
3079 | vectors and structures. */ | |
3080 | bool | |
3081 | aarch64_sve_mode_p (machine_mode mode) | |
3082 | { | |
3083 | return aarch64_classify_vector_mode (mode) & VEC_ANY_SVE; | |
3084 | } | |
3085 | ||
43cacb12 RS |
3086 | /* Return true if MODE is an SVE data vector mode; either a single vector |
3087 | or a structure of vectors. */ | |
43e9d192 | 3088 | static bool |
43cacb12 | 3089 | aarch64_sve_data_mode_p (machine_mode mode) |
43e9d192 | 3090 | { |
43cacb12 | 3091 | return aarch64_classify_vector_mode (mode) & VEC_SVE_DATA; |
43e9d192 IB |
3092 | } |
3093 | ||
550a3380 RS |
3094 | /* Return the number of defined bytes in one constituent vector of |
3095 | SVE mode MODE, which has vector flags VEC_FLAGS. */ | |
3096 | static poly_int64 | |
3097 | aarch64_vl_bytes (machine_mode mode, unsigned int vec_flags) | |
3098 | { | |
3099 | if (vec_flags & VEC_PARTIAL) | |
3100 | /* A single partial vector. */ | |
3101 | return GET_MODE_SIZE (mode); | |
3102 | ||
3103 | if (vec_flags & VEC_SVE_DATA) | |
3104 | /* A single vector or a tuple. */ | |
3105 | return BYTES_PER_SVE_VECTOR; | |
3106 | ||
3107 | /* A single predicate. */ | |
3108 | gcc_assert (vec_flags & VEC_SVE_PRED); | |
3109 | return BYTES_PER_SVE_PRED; | |
3110 | } | |
3111 | ||
05783fe6 RS |
3112 | /* If MODE holds an array of vectors, return the number of vectors |
3113 | in the array, otherwise return 1. */ | |
3114 | ||
3115 | static unsigned int | |
3116 | aarch64_ldn_stn_vectors (machine_mode mode) | |
3117 | { | |
3118 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
3119 | if (vec_flags == (VEC_ADVSIMD | VEC_PARTIAL | VEC_STRUCT)) | |
3120 | return exact_div (GET_MODE_SIZE (mode), 8).to_constant (); | |
3121 | if (vec_flags == (VEC_ADVSIMD | VEC_STRUCT)) | |
3122 | return exact_div (GET_MODE_SIZE (mode), 16).to_constant (); | |
3123 | if (vec_flags == (VEC_SVE_DATA | VEC_STRUCT)) | |
3124 | return exact_div (GET_MODE_SIZE (mode), | |
3125 | BYTES_PER_SVE_VECTOR).to_constant (); | |
3126 | return 1; | |
3127 | } | |
3128 | ||
66f206b8 JW |
3129 | /* Given an Advanced SIMD vector mode MODE and a tuple size NELEMS, return the |
3130 | corresponding vector structure mode. */ | |
3131 | static opt_machine_mode | |
3132 | aarch64_advsimd_vector_array_mode (machine_mode mode, | |
3133 | unsigned HOST_WIDE_INT nelems) | |
3134 | { | |
3135 | unsigned int flags = VEC_ADVSIMD | VEC_STRUCT; | |
3136 | if (known_eq (GET_MODE_SIZE (mode), 8)) | |
3137 | flags |= VEC_PARTIAL; | |
3138 | ||
3139 | machine_mode struct_mode; | |
3140 | FOR_EACH_MODE_IN_CLASS (struct_mode, GET_MODE_CLASS (mode)) | |
3141 | if (aarch64_classify_vector_mode (struct_mode) == flags | |
3142 | && GET_MODE_INNER (struct_mode) == GET_MODE_INNER (mode) | |
3143 | && known_eq (GET_MODE_NUNITS (struct_mode), | |
3144 | GET_MODE_NUNITS (mode) * nelems)) | |
3145 | return struct_mode; | |
3146 | return opt_machine_mode (); | |
3147 | } | |
3148 | ||
3149 | /* Return the SVE vector mode that has NUNITS elements of mode INNER_MODE. */ | |
3150 | ||
3151 | opt_machine_mode | |
3152 | aarch64_sve_data_mode (scalar_mode inner_mode, poly_uint64 nunits) | |
3153 | { | |
3154 | enum mode_class mclass = (is_a <scalar_float_mode> (inner_mode) | |
3155 | ? MODE_VECTOR_FLOAT : MODE_VECTOR_INT); | |
3156 | machine_mode mode; | |
3157 | FOR_EACH_MODE_IN_CLASS (mode, mclass) | |
3158 | if (inner_mode == GET_MODE_INNER (mode) | |
3159 | && known_eq (nunits, GET_MODE_NUNITS (mode)) | |
3160 | && aarch64_sve_data_mode_p (mode)) | |
3161 | return mode; | |
3162 | return opt_machine_mode (); | |
3163 | } | |
3164 | ||
9f4cbab8 RS |
3165 | /* Implement target hook TARGET_ARRAY_MODE. */ |
3166 | static opt_machine_mode | |
3167 | aarch64_array_mode (machine_mode mode, unsigned HOST_WIDE_INT nelems) | |
3168 | { | |
3169 | if (aarch64_classify_vector_mode (mode) == VEC_SVE_DATA | |
3170 | && IN_RANGE (nelems, 2, 4)) | |
66f206b8 JW |
3171 | return aarch64_sve_data_mode (GET_MODE_INNER (mode), |
3172 | GET_MODE_NUNITS (mode) * nelems); | |
3173 | if (aarch64_classify_vector_mode (mode) == VEC_ADVSIMD | |
3174 | && IN_RANGE (nelems, 2, 4)) | |
3175 | return aarch64_advsimd_vector_array_mode (mode, nelems); | |
9f4cbab8 RS |
3176 | |
3177 | return opt_machine_mode (); | |
3178 | } | |
3179 | ||
43e9d192 IB |
3180 | /* Implement target hook TARGET_ARRAY_MODE_SUPPORTED_P. */ |
3181 | static bool | |
ef4bddc2 | 3182 | aarch64_array_mode_supported_p (machine_mode mode, |
43e9d192 IB |
3183 | unsigned HOST_WIDE_INT nelems) |
3184 | { | |
3185 | if (TARGET_SIMD | |
635e66fe AL |
3186 | && (AARCH64_VALID_SIMD_QREG_MODE (mode) |
3187 | || AARCH64_VALID_SIMD_DREG_MODE (mode)) | |
43e9d192 IB |
3188 | && (nelems >= 2 && nelems <= 4)) |
3189 | return true; | |
3190 | ||
3191 | return false; | |
3192 | } | |
3193 | ||
cc68f7c2 RS |
3194 | /* MODE is some form of SVE vector mode. For data modes, return the number |
3195 | of vector register bits that each element of MODE occupies, such as 64 | |
3196 | for both VNx2DImode and VNx2SImode (where each 32-bit value is stored | |
3197 | in a 64-bit container). For predicate modes, return the number of | |
3198 | data bits controlled by each significant predicate bit. */ | |
3199 | ||
3200 | static unsigned int | |
3201 | aarch64_sve_container_bits (machine_mode mode) | |
3202 | { | |
3203 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
3204 | poly_uint64 vector_bits = (vec_flags & (VEC_PARTIAL | VEC_SVE_PRED) | |
3205 | ? BITS_PER_SVE_VECTOR | |
3206 | : GET_MODE_BITSIZE (mode)); | |
3207 | return vector_element_size (vector_bits, GET_MODE_NUNITS (mode)); | |
3208 | } | |
3209 | ||
43cacb12 RS |
3210 | /* Return the SVE predicate mode to use for elements that have |
3211 | ELEM_NBYTES bytes, if such a mode exists. */ | |
3212 | ||
3213 | opt_machine_mode | |
3214 | aarch64_sve_pred_mode (unsigned int elem_nbytes) | |
3215 | { | |
3216 | if (TARGET_SVE) | |
3217 | { | |
3218 | if (elem_nbytes == 1) | |
3219 | return VNx16BImode; | |
3220 | if (elem_nbytes == 2) | |
3221 | return VNx8BImode; | |
3222 | if (elem_nbytes == 4) | |
3223 | return VNx4BImode; | |
3224 | if (elem_nbytes == 8) | |
3225 | return VNx2BImode; | |
3226 | } | |
3227 | return opt_machine_mode (); | |
3228 | } | |
3229 | ||
cc68f7c2 RS |
3230 | /* Return the SVE predicate mode that should be used to control |
3231 | SVE mode MODE. */ | |
3232 | ||
3233 | machine_mode | |
3234 | aarch64_sve_pred_mode (machine_mode mode) | |
3235 | { | |
3236 | unsigned int bits = aarch64_sve_container_bits (mode); | |
3237 | return aarch64_sve_pred_mode (bits / BITS_PER_UNIT).require (); | |
3238 | } | |
3239 | ||
43cacb12 RS |
3240 | /* Implement TARGET_VECTORIZE_GET_MASK_MODE. */ |
3241 | ||
3242 | static opt_machine_mode | |
10116ec1 | 3243 | aarch64_get_mask_mode (machine_mode mode) |
43cacb12 | 3244 | { |
10116ec1 RS |
3245 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); |
3246 | if (vec_flags & VEC_SVE_DATA) | |
cc68f7c2 | 3247 | return aarch64_sve_pred_mode (mode); |
43cacb12 | 3248 | |
10116ec1 | 3249 | return default_get_mask_mode (mode); |
43cacb12 RS |
3250 | } |
3251 | ||
1044fa32 RS |
3252 | /* Return the integer element mode associated with SVE mode MODE. */ |
3253 | ||
3254 | static scalar_int_mode | |
3255 | aarch64_sve_element_int_mode (machine_mode mode) | |
3256 | { | |
cc68f7c2 RS |
3257 | poly_uint64 vector_bits = (GET_MODE_CLASS (mode) == MODE_VECTOR_BOOL |
3258 | ? BITS_PER_SVE_VECTOR | |
3259 | : GET_MODE_BITSIZE (mode)); | |
3260 | unsigned int elt_bits = vector_element_size (vector_bits, | |
1044fa32 RS |
3261 | GET_MODE_NUNITS (mode)); |
3262 | return int_mode_for_size (elt_bits, 0).require (); | |
3263 | } | |
3264 | ||
cc68f7c2 RS |
3265 | /* Return an integer element mode that contains exactly |
3266 | aarch64_sve_container_bits (MODE) bits. This is wider than | |
3267 | aarch64_sve_element_int_mode if MODE is a partial vector, | |
3268 | otherwise it's the same. */ | |
3269 | ||
3270 | static scalar_int_mode | |
3271 | aarch64_sve_container_int_mode (machine_mode mode) | |
3272 | { | |
3273 | return int_mode_for_size (aarch64_sve_container_bits (mode), 0).require (); | |
3274 | } | |
3275 | ||
d7a09c44 | 3276 | /* Return the integer vector mode associated with SVE mode MODE. |
d083ee47 | 3277 | Unlike related_int_vector_mode, this can handle the case in which |
d7a09c44 RS |
3278 | MODE is a predicate (and thus has a different total size). */ |
3279 | ||
624d0f07 | 3280 | machine_mode |
d7a09c44 RS |
3281 | aarch64_sve_int_mode (machine_mode mode) |
3282 | { | |
3283 | scalar_int_mode int_mode = aarch64_sve_element_int_mode (mode); | |
3284 | return aarch64_sve_data_mode (int_mode, GET_MODE_NUNITS (mode)).require (); | |
3285 | } | |
3286 | ||
74166aab RS |
3287 | /* Implement TARGET_VECTORIZE_RELATED_MODE. */ |
3288 | ||
3289 | static opt_machine_mode | |
3290 | aarch64_vectorize_related_mode (machine_mode vector_mode, | |
3291 | scalar_mode element_mode, | |
3292 | poly_uint64 nunits) | |
3293 | { | |
3294 | unsigned int vec_flags = aarch64_classify_vector_mode (vector_mode); | |
3295 | ||
cc68f7c2 RS |
3296 | /* If we're operating on SVE vectors, try to return an SVE mode. */ |
3297 | poly_uint64 sve_nunits; | |
3298 | if ((vec_flags & VEC_SVE_DATA) | |
3299 | && multiple_p (BYTES_PER_SVE_VECTOR, | |
3300 | GET_MODE_SIZE (element_mode), &sve_nunits)) | |
3301 | { | |
3302 | machine_mode sve_mode; | |
3303 | if (maybe_ne (nunits, 0U)) | |
3304 | { | |
3305 | /* Try to find a full or partial SVE mode with exactly | |
3306 | NUNITS units. */ | |
3307 | if (multiple_p (sve_nunits, nunits) | |
3308 | && aarch64_sve_data_mode (element_mode, | |
3309 | nunits).exists (&sve_mode)) | |
3310 | return sve_mode; | |
3311 | } | |
3312 | else | |
3313 | { | |
3314 | /* Take the preferred number of units from the number of bytes | |
3315 | that fit in VECTOR_MODE. We always start by "autodetecting" | |
3316 | a full vector mode with preferred_simd_mode, so vectors | |
3317 | chosen here will also be full vector modes. Then | |
3318 | autovectorize_vector_modes tries smaller starting modes | |
3319 | and thus smaller preferred numbers of units. */ | |
3320 | sve_nunits = ordered_min (sve_nunits, GET_MODE_SIZE (vector_mode)); | |
3321 | if (aarch64_sve_data_mode (element_mode, | |
3322 | sve_nunits).exists (&sve_mode)) | |
3323 | return sve_mode; | |
3324 | } | |
3325 | } | |
3326 | ||
74166aab RS |
3327 | /* Prefer to use 1 128-bit vector instead of 2 64-bit vectors. */ |
3328 | if ((vec_flags & VEC_ADVSIMD) | |
3329 | && known_eq (nunits, 0U) | |
3330 | && known_eq (GET_MODE_BITSIZE (vector_mode), 64U) | |
3331 | && maybe_ge (GET_MODE_BITSIZE (element_mode) | |
3332 | * GET_MODE_NUNITS (vector_mode), 128U)) | |
3333 | { | |
3334 | machine_mode res = aarch64_simd_container_mode (element_mode, 128); | |
3335 | if (VECTOR_MODE_P (res)) | |
3336 | return res; | |
3337 | } | |
3338 | ||
3339 | return default_vectorize_related_mode (vector_mode, element_mode, nunits); | |
3340 | } | |
3341 | ||
b41d1f6e RS |
3342 | /* Implement TARGET_PREFERRED_ELSE_VALUE. For binary operations, |
3343 | prefer to use the first arithmetic operand as the else value if | |
3344 | the else value doesn't matter, since that exactly matches the SVE | |
3345 | destructive merging form. For ternary operations we could either | |
3346 | pick the first operand and use FMAD-like instructions or the last | |
3347 | operand and use FMLA-like instructions; the latter seems more | |
3348 | natural. */ | |
6a86928d RS |
3349 | |
3350 | static tree | |
b41d1f6e | 3351 | aarch64_preferred_else_value (unsigned, tree, unsigned int nops, tree *ops) |
6a86928d | 3352 | { |
b41d1f6e | 3353 | return nops == 3 ? ops[2] : ops[0]; |
6a86928d RS |
3354 | } |
3355 | ||
c43f4279 | 3356 | /* Implement TARGET_HARD_REGNO_NREGS. */ |
43e9d192 | 3357 | |
c43f4279 | 3358 | static unsigned int |
ef4bddc2 | 3359 | aarch64_hard_regno_nregs (unsigned regno, machine_mode mode) |
43e9d192 | 3360 | { |
6a70badb RS |
3361 | /* ??? Logically we should only need to provide a value when |
3362 | HARD_REGNO_MODE_OK says that the combination is valid, | |
3363 | but at the moment we need to handle all modes. Just ignore | |
3364 | any runtime parts for registers that can't store them. */ | |
3365 | HOST_WIDE_INT lowest_size = constant_lower_bound (GET_MODE_SIZE (mode)); | |
43e9d192 IB |
3366 | switch (aarch64_regno_regclass (regno)) |
3367 | { | |
3368 | case FP_REGS: | |
3369 | case FP_LO_REGS: | |
163b1f6a | 3370 | case FP_LO8_REGS: |
550a3380 RS |
3371 | { |
3372 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
3373 | if (vec_flags & VEC_SVE_DATA) | |
3374 | return exact_div (GET_MODE_SIZE (mode), | |
3375 | aarch64_vl_bytes (mode, vec_flags)).to_constant (); | |
66f206b8 JW |
3376 | if (vec_flags == (VEC_ADVSIMD | VEC_STRUCT | VEC_PARTIAL)) |
3377 | return GET_MODE_SIZE (mode).to_constant () / 8; | |
550a3380 RS |
3378 | return CEIL (lowest_size, UNITS_PER_VREG); |
3379 | } | |
43cacb12 RS |
3380 | case PR_REGS: |
3381 | case PR_LO_REGS: | |
3382 | case PR_HI_REGS: | |
183bfdaf RS |
3383 | case FFR_REGS: |
3384 | case PR_AND_FFR_REGS: | |
43cacb12 | 3385 | return 1; |
43e9d192 | 3386 | default: |
6a70badb | 3387 | return CEIL (lowest_size, UNITS_PER_WORD); |
43e9d192 IB |
3388 | } |
3389 | gcc_unreachable (); | |
3390 | } | |
3391 | ||
f939c3e6 | 3392 | /* Implement TARGET_HARD_REGNO_MODE_OK. */ |
43e9d192 | 3393 | |
f939c3e6 | 3394 | static bool |
ef4bddc2 | 3395 | aarch64_hard_regno_mode_ok (unsigned regno, machine_mode mode) |
43e9d192 | 3396 | { |
dd159a41 PW |
3397 | if (mode == V8DImode) |
3398 | return IN_RANGE (regno, R0_REGNUM, R23_REGNUM) | |
3399 | && multiple_p (regno - R0_REGNUM, 2); | |
3400 | ||
43e9d192 IB |
3401 | if (GET_MODE_CLASS (mode) == MODE_CC) |
3402 | return regno == CC_REGNUM; | |
3403 | ||
43cacb12 RS |
3404 | if (regno == VG_REGNUM) |
3405 | /* This must have the same size as _Unwind_Word. */ | |
3406 | return mode == DImode; | |
3407 | ||
3408 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
3409 | if (vec_flags & VEC_SVE_PRED) | |
183bfdaf | 3410 | return pr_or_ffr_regnum_p (regno); |
43cacb12 | 3411 | |
183bfdaf RS |
3412 | if (pr_or_ffr_regnum_p (regno)) |
3413 | return false; | |
43cacb12 | 3414 | |
9259db42 YZ |
3415 | if (regno == SP_REGNUM) |
3416 | /* The purpose of comparing with ptr_mode is to support the | |
3417 | global register variable associated with the stack pointer | |
3418 | register via the syntax of asm ("wsp") in ILP32. */ | |
3419 | return mode == Pmode || mode == ptr_mode; | |
3420 | ||
3421 | if (regno == FRAME_POINTER_REGNUM || regno == ARG_POINTER_REGNUM) | |
43e9d192 IB |
3422 | return mode == Pmode; |
3423 | ||
563cc649 RH |
3424 | if (GP_REGNUM_P (regno)) |
3425 | { | |
aa1a2795 RS |
3426 | if (vec_flags & VEC_ANY_SVE) |
3427 | return false; | |
563cc649 RH |
3428 | if (known_le (GET_MODE_SIZE (mode), 8)) |
3429 | return true; | |
aa1a2795 | 3430 | if (known_le (GET_MODE_SIZE (mode), 16)) |
563cc649 RH |
3431 | return (regno & 1) == 0; |
3432 | } | |
3433 | else if (FP_REGNUM_P (regno)) | |
43e9d192 | 3434 | { |
43cacb12 | 3435 | if (vec_flags & VEC_STRUCT) |
4edd6298 | 3436 | return end_hard_regno (mode, regno) - 1 <= V31_REGNUM; |
43e9d192 | 3437 | else |
43cacb12 | 3438 | return !VECTOR_MODE_P (mode) || vec_flags != 0; |
43e9d192 IB |
3439 | } |
3440 | ||
f939c3e6 | 3441 | return false; |
43e9d192 IB |
3442 | } |
3443 | ||
c600df9a RS |
3444 | /* Return true if a function with type FNTYPE returns its value in |
3445 | SVE vector or predicate registers. */ | |
3446 | ||
3447 | static bool | |
3448 | aarch64_returns_value_in_sve_regs_p (const_tree fntype) | |
3449 | { | |
c600df9a | 3450 | tree return_type = TREE_TYPE (fntype); |
38e62001 RS |
3451 | |
3452 | pure_scalable_type_info pst_info; | |
3453 | switch (pst_info.analyze (return_type)) | |
3454 | { | |
3455 | case pure_scalable_type_info::IS_PST: | |
3456 | return (pst_info.num_zr () <= NUM_FP_ARG_REGS | |
3457 | && pst_info.num_pr () <= NUM_PR_ARG_REGS); | |
3458 | ||
3459 | case pure_scalable_type_info::DOESNT_MATTER: | |
3460 | gcc_assert (aarch64_return_in_memory_1 (return_type)); | |
3461 | return false; | |
3462 | ||
3463 | case pure_scalable_type_info::NO_ABI_IDENTITY: | |
3464 | case pure_scalable_type_info::ISNT_PST: | |
3465 | return false; | |
3466 | } | |
3467 | gcc_unreachable (); | |
c600df9a RS |
3468 | } |
3469 | ||
3470 | /* Return true if a function with type FNTYPE takes arguments in | |
3471 | SVE vector or predicate registers. */ | |
3472 | ||
3473 | static bool | |
3474 | aarch64_takes_arguments_in_sve_regs_p (const_tree fntype) | |
3475 | { | |
3476 | CUMULATIVE_ARGS args_so_far_v; | |
3477 | aarch64_init_cumulative_args (&args_so_far_v, NULL_TREE, NULL_RTX, | |
3478 | NULL_TREE, 0, true); | |
3479 | cumulative_args_t args_so_far = pack_cumulative_args (&args_so_far_v); | |
3480 | ||
3481 | for (tree chain = TYPE_ARG_TYPES (fntype); | |
3482 | chain && chain != void_list_node; | |
3483 | chain = TREE_CHAIN (chain)) | |
3484 | { | |
3485 | tree arg_type = TREE_VALUE (chain); | |
3486 | if (arg_type == error_mark_node) | |
3487 | return false; | |
3488 | ||
3489 | function_arg_info arg (arg_type, /*named=*/true); | |
3490 | apply_pass_by_reference_rules (&args_so_far_v, arg); | |
38e62001 RS |
3491 | pure_scalable_type_info pst_info; |
3492 | if (pst_info.analyze_registers (arg.type)) | |
3493 | { | |
3494 | unsigned int end_zr = args_so_far_v.aapcs_nvrn + pst_info.num_zr (); | |
3495 | unsigned int end_pr = args_so_far_v.aapcs_nprn + pst_info.num_pr (); | |
3496 | gcc_assert (end_zr <= NUM_FP_ARG_REGS && end_pr <= NUM_PR_ARG_REGS); | |
3497 | return true; | |
3498 | } | |
c600df9a RS |
3499 | |
3500 | targetm.calls.function_arg_advance (args_so_far, arg); | |
3501 | } | |
3502 | return false; | |
3503 | } | |
3504 | ||
002ffd3c RS |
3505 | /* Implement TARGET_FNTYPE_ABI. */ |
3506 | ||
3507 | static const predefined_function_abi & | |
3508 | aarch64_fntype_abi (const_tree fntype) | |
3509 | { | |
3510 | if (lookup_attribute ("aarch64_vector_pcs", TYPE_ATTRIBUTES (fntype))) | |
3511 | return aarch64_simd_abi (); | |
c600df9a RS |
3512 | |
3513 | if (aarch64_returns_value_in_sve_regs_p (fntype) | |
3514 | || aarch64_takes_arguments_in_sve_regs_p (fntype)) | |
3515 | return aarch64_sve_abi (); | |
3516 | ||
002ffd3c RS |
3517 | return default_function_abi; |
3518 | } | |
3519 | ||
482b2b43 RS |
3520 | /* Implement TARGET_COMPATIBLE_VECTOR_TYPES_P. */ |
3521 | ||
3522 | static bool | |
3523 | aarch64_compatible_vector_types_p (const_tree type1, const_tree type2) | |
3524 | { | |
3525 | return (aarch64_sve::builtin_type_p (type1) | |
3526 | == aarch64_sve::builtin_type_p (type2)); | |
3527 | } | |
3528 | ||
c600df9a | 3529 | /* Return true if we should emit CFI for register REGNO. */ |
a0d0b980 SE |
3530 | |
3531 | static bool | |
c600df9a | 3532 | aarch64_emit_cfi_for_reg_p (unsigned int regno) |
a0d0b980 | 3533 | { |
c600df9a RS |
3534 | return (GP_REGNUM_P (regno) |
3535 | || !default_function_abi.clobbers_full_reg_p (regno)); | |
a0d0b980 SE |
3536 | } |
3537 | ||
c600df9a | 3538 | /* Return the mode we should use to save and restore register REGNO. */ |
a0d0b980 SE |
3539 | |
3540 | static machine_mode | |
c600df9a | 3541 | aarch64_reg_save_mode (unsigned int regno) |
a0d0b980 | 3542 | { |
c600df9a RS |
3543 | if (GP_REGNUM_P (regno)) |
3544 | return DImode; | |
3545 | ||
3546 | if (FP_REGNUM_P (regno)) | |
3547 | switch (crtl->abi->id ()) | |
3548 | { | |
3549 | case ARM_PCS_AAPCS64: | |
3550 | /* Only the low 64 bits are saved by the base PCS. */ | |
3551 | return DFmode; | |
3552 | ||
3553 | case ARM_PCS_SIMD: | |
3554 | /* The vector PCS saves the low 128 bits (which is the full | |
3555 | register on non-SVE targets). */ | |
3556 | return TFmode; | |
3557 | ||
3558 | case ARM_PCS_SVE: | |
3559 | /* Use vectors of DImode for registers that need frame | |
3560 | information, so that the first 64 bytes of the save slot | |
3561 | are always the equivalent of what storing D<n> would give. */ | |
3562 | if (aarch64_emit_cfi_for_reg_p (regno)) | |
3563 | return VNx2DImode; | |
3564 | ||
3565 | /* Use vectors of bytes otherwise, so that the layout is | |
3566 | endian-agnostic, and so that we can use LDR and STR for | |
3567 | big-endian targets. */ | |
3568 | return VNx16QImode; | |
3569 | ||
3570 | case ARM_PCS_TLSDESC: | |
3571 | case ARM_PCS_UNKNOWN: | |
3572 | break; | |
3573 | } | |
3574 | ||
3575 | if (PR_REGNUM_P (regno)) | |
3576 | /* Save the full predicate register. */ | |
3577 | return VNx16BImode; | |
3578 | ||
3579 | gcc_unreachable (); | |
a0d0b980 SE |
3580 | } |
3581 | ||
5a5a3bc5 | 3582 | /* Implement TARGET_INSN_CALLEE_ABI. */ |
b3650d40 | 3583 | |
5a5a3bc5 RS |
3584 | const predefined_function_abi & |
3585 | aarch64_insn_callee_abi (const rtx_insn *insn) | |
b3650d40 | 3586 | { |
08cc4d92 RS |
3587 | rtx pat = PATTERN (insn); |
3588 | gcc_assert (GET_CODE (pat) == PARALLEL); | |
3589 | rtx unspec = XVECEXP (pat, 0, 1); | |
3590 | gcc_assert (GET_CODE (unspec) == UNSPEC | |
3591 | && XINT (unspec, 1) == UNSPEC_CALLEE_ABI); | |
3592 | return function_abis[INTVAL (XVECEXP (unspec, 0, 0))]; | |
b3650d40 SE |
3593 | } |
3594 | ||
80ec73f4 RS |
3595 | /* Implement TARGET_HARD_REGNO_CALL_PART_CLOBBERED. The callee only saves |
3596 | the lower 64 bits of a 128-bit register. Tell the compiler the callee | |
3597 | clobbers the top 64 bits when restoring the bottom 64 bits. */ | |
3598 | ||
3599 | static bool | |
6ee2cc70 RS |
3600 | aarch64_hard_regno_call_part_clobbered (unsigned int abi_id, |
3601 | unsigned int regno, | |
473574ee | 3602 | machine_mode mode) |
80ec73f4 | 3603 | { |
c600df9a | 3604 | if (FP_REGNUM_P (regno) && abi_id != ARM_PCS_SVE) |
51051f47 | 3605 | { |
51051f47 RS |
3606 | poly_int64 per_register_size = GET_MODE_SIZE (mode); |
3607 | unsigned int nregs = hard_regno_nregs (regno, mode); | |
3608 | if (nregs > 1) | |
3609 | per_register_size = exact_div (per_register_size, nregs); | |
bb6ce448 RS |
3610 | if (abi_id == ARM_PCS_SIMD || abi_id == ARM_PCS_TLSDESC) |
3611 | return maybe_gt (per_register_size, 16); | |
3612 | return maybe_gt (per_register_size, 8); | |
51051f47 RS |
3613 | } |
3614 | return false; | |
473574ee SE |
3615 | } |
3616 | ||
43cacb12 RS |
3617 | /* Implement REGMODE_NATURAL_SIZE. */ |
3618 | poly_uint64 | |
3619 | aarch64_regmode_natural_size (machine_mode mode) | |
3620 | { | |
3621 | /* The natural size for SVE data modes is one SVE data vector, | |
3622 | and similarly for predicates. We can't independently modify | |
3623 | anything smaller than that. */ | |
3624 | /* ??? For now, only do this for variable-width SVE registers. | |
3625 | Doing it for constant-sized registers breaks lower-subreg.c. */ | |
3626 | /* ??? And once that's fixed, we should probably have similar | |
3627 | code for Advanced SIMD. */ | |
3628 | if (!aarch64_sve_vg.is_constant ()) | |
3629 | { | |
3630 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
3631 | if (vec_flags & VEC_SVE_PRED) | |
3632 | return BYTES_PER_SVE_PRED; | |
3633 | if (vec_flags & VEC_SVE_DATA) | |
3634 | return BYTES_PER_SVE_VECTOR; | |
3635 | } | |
3636 | return UNITS_PER_WORD; | |
3637 | } | |
3638 | ||
73d9ac6a | 3639 | /* Implement HARD_REGNO_CALLER_SAVE_MODE. */ |
ef4bddc2 | 3640 | machine_mode |
43cacb12 RS |
3641 | aarch64_hard_regno_caller_save_mode (unsigned regno, unsigned, |
3642 | machine_mode mode) | |
3643 | { | |
3644 | /* The predicate mode determines which bits are significant and | |
3645 | which are "don't care". Decreasing the number of lanes would | |
3646 | lose data while increasing the number of lanes would make bits | |
3647 | unnecessarily significant. */ | |
3648 | if (PR_REGNUM_P (regno)) | |
3649 | return mode; | |
6a70badb RS |
3650 | if (known_ge (GET_MODE_SIZE (mode), 4)) |
3651 | return mode; | |
73d9ac6a | 3652 | else |
6a70badb | 3653 | return SImode; |
73d9ac6a IB |
3654 | } |
3655 | ||
231c52ae ST |
3656 | /* Return true if I's bits are consecutive ones from the MSB. */ |
3657 | bool | |
3658 | aarch64_high_bits_all_ones_p (HOST_WIDE_INT i) | |
3659 | { | |
3660 | return exact_log2 (-i) != HOST_WIDE_INT_M1; | |
3661 | } | |
3662 | ||
58e17cf8 RS |
3663 | /* Implement TARGET_CONSTANT_ALIGNMENT. Make strings word-aligned so |
3664 | that strcpy from constants will be faster. */ | |
3665 | ||
3666 | static HOST_WIDE_INT | |
3667 | aarch64_constant_alignment (const_tree exp, HOST_WIDE_INT align) | |
3668 | { | |
3669 | if (TREE_CODE (exp) == STRING_CST && !optimize_size) | |
3670 | return MAX (align, BITS_PER_WORD); | |
3671 | return align; | |
3672 | } | |
3673 | ||
43e9d192 IB |
3674 | /* Return true if calls to DECL should be treated as |
3675 | long-calls (ie called via a register). */ | |
3676 | static bool | |
3677 | aarch64_decl_is_long_call_p (const_tree decl ATTRIBUTE_UNUSED) | |
3678 | { | |
3679 | return false; | |
3680 | } | |
3681 | ||
3682 | /* Return true if calls to symbol-ref SYM should be treated as | |
3683 | long-calls (ie called via a register). */ | |
3684 | bool | |
3685 | aarch64_is_long_call_p (rtx sym) | |
3686 | { | |
3687 | return aarch64_decl_is_long_call_p (SYMBOL_REF_DECL (sym)); | |
3688 | } | |
3689 | ||
b60d63cb JW |
3690 | /* Return true if calls to symbol-ref SYM should not go through |
3691 | plt stubs. */ | |
3692 | ||
3693 | bool | |
3694 | aarch64_is_noplt_call_p (rtx sym) | |
3695 | { | |
3696 | const_tree decl = SYMBOL_REF_DECL (sym); | |
3697 | ||
3698 | if (flag_pic | |
3699 | && decl | |
3700 | && (!flag_plt | |
3701 | || lookup_attribute ("noplt", DECL_ATTRIBUTES (decl))) | |
3702 | && !targetm.binds_local_p (decl)) | |
3703 | return true; | |
3704 | ||
3705 | return false; | |
3706 | } | |
3707 | ||
43e9d192 IB |
3708 | /* Emit an insn that's a simple single-set. Both the operands must be |
3709 | known to be valid. */ | |
827ab47a | 3710 | inline static rtx_insn * |
43e9d192 IB |
3711 | emit_set_insn (rtx x, rtx y) |
3712 | { | |
f7df4a84 | 3713 | return emit_insn (gen_rtx_SET (x, y)); |
43e9d192 IB |
3714 | } |
3715 | ||
3716 | /* X and Y are two things to compare using CODE. Emit the compare insn and | |
3717 | return the rtx for register 0 in the proper mode. */ | |
3718 | rtx | |
3719 | aarch64_gen_compare_reg (RTX_CODE code, rtx x, rtx y) | |
3720 | { | |
4a2095eb RH |
3721 | machine_mode cmp_mode = GET_MODE (x); |
3722 | machine_mode cc_mode; | |
3723 | rtx cc_reg; | |
43e9d192 | 3724 | |
4a2095eb RH |
3725 | if (cmp_mode == TImode) |
3726 | { | |
3727 | gcc_assert (code == NE); | |
3728 | ||
3729 | cc_mode = CCmode; | |
3730 | cc_reg = gen_rtx_REG (cc_mode, CC_REGNUM); | |
3731 | ||
3732 | rtx x_lo = operand_subword (x, 0, 0, TImode); | |
3733 | rtx y_lo = operand_subword (y, 0, 0, TImode); | |
3734 | emit_set_insn (cc_reg, gen_rtx_COMPARE (cc_mode, x_lo, y_lo)); | |
3735 | ||
3736 | rtx x_hi = operand_subword (x, 1, 0, TImode); | |
3737 | rtx y_hi = operand_subword (y, 1, 0, TImode); | |
865257c4 RS |
3738 | emit_insn (gen_ccmpccdi (cc_reg, cc_reg, x_hi, y_hi, |
3739 | gen_rtx_EQ (cc_mode, cc_reg, const0_rtx), | |
3740 | GEN_INT (AARCH64_EQ))); | |
4a2095eb RH |
3741 | } |
3742 | else | |
3743 | { | |
3744 | cc_mode = SELECT_CC_MODE (code, x, y); | |
3745 | cc_reg = gen_rtx_REG (cc_mode, CC_REGNUM); | |
3746 | emit_set_insn (cc_reg, gen_rtx_COMPARE (cc_mode, x, y)); | |
3747 | } | |
43e9d192 IB |
3748 | return cc_reg; |
3749 | } | |
3750 | ||
d400fda3 RH |
3751 | /* Similarly, but maybe zero-extend Y if Y_MODE < SImode. */ |
3752 | ||
3753 | static rtx | |
3754 | aarch64_gen_compare_reg_maybe_ze (RTX_CODE code, rtx x, rtx y, | |
3755 | machine_mode y_mode) | |
3756 | { | |
3757 | if (y_mode == E_QImode || y_mode == E_HImode) | |
3758 | { | |
3759 | if (CONST_INT_P (y)) | |
df562b12 JJ |
3760 | { |
3761 | y = GEN_INT (INTVAL (y) & GET_MODE_MASK (y_mode)); | |
3762 | y_mode = SImode; | |
3763 | } | |
d400fda3 RH |
3764 | else |
3765 | { | |
3766 | rtx t, cc_reg; | |
3767 | machine_mode cc_mode; | |
3768 | ||
3769 | t = gen_rtx_ZERO_EXTEND (SImode, y); | |
3770 | t = gen_rtx_COMPARE (CC_SWPmode, t, x); | |
3771 | cc_mode = CC_SWPmode; | |
3772 | cc_reg = gen_rtx_REG (cc_mode, CC_REGNUM); | |
3773 | emit_set_insn (cc_reg, t); | |
3774 | return cc_reg; | |
3775 | } | |
3776 | } | |
3777 | ||
846f78d4 PK |
3778 | if (!aarch64_plus_operand (y, y_mode)) |
3779 | y = force_reg (y_mode, y); | |
3780 | ||
d400fda3 RH |
3781 | return aarch64_gen_compare_reg (code, x, y); |
3782 | } | |
3783 | ||
43e9d192 IB |
3784 | /* Build the SYMBOL_REF for __tls_get_addr. */ |
3785 | ||
3786 | static GTY(()) rtx tls_get_addr_libfunc; | |
3787 | ||
3788 | rtx | |
3789 | aarch64_tls_get_addr (void) | |
3790 | { | |
3791 | if (!tls_get_addr_libfunc) | |
3792 | tls_get_addr_libfunc = init_one_libfunc ("__tls_get_addr"); | |
3793 | return tls_get_addr_libfunc; | |
3794 | } | |
3795 | ||
3796 | /* Return the TLS model to use for ADDR. */ | |
3797 | ||
3798 | static enum tls_model | |
3799 | tls_symbolic_operand_type (rtx addr) | |
3800 | { | |
3801 | enum tls_model tls_kind = TLS_MODEL_NONE; | |
74b27d8e RS |
3802 | poly_int64 offset; |
3803 | addr = strip_offset_and_salt (addr, &offset); | |
3793ecc1 | 3804 | if (SYMBOL_REF_P (addr)) |
43e9d192 IB |
3805 | tls_kind = SYMBOL_REF_TLS_MODEL (addr); |
3806 | ||
3807 | return tls_kind; | |
3808 | } | |
3809 | ||
3810 | /* We'll allow lo_sum's in addresses in our legitimate addresses | |
3811 | so that combine would take care of combining addresses where | |
3812 | necessary, but for generation purposes, we'll generate the address | |
3813 | as : | |
3814 | RTL Absolute | |
3815 | tmp = hi (symbol_ref); adrp x1, foo | |
3816 | dest = lo_sum (tmp, symbol_ref); add dest, x1, :lo_12:foo | |
3817 | nop | |
3818 | ||
3819 | PIC TLS | |
3820 | adrp x1, :got:foo adrp tmp, :tlsgd:foo | |
3821 | ldr x1, [:got_lo12:foo] add dest, tmp, :tlsgd_lo12:foo | |
3822 | bl __tls_get_addr | |
3823 | nop | |
3824 | ||
3825 | Load TLS symbol, depending on TLS mechanism and TLS access model. | |
3826 | ||
3827 | Global Dynamic - Traditional TLS: | |
3828 | adrp tmp, :tlsgd:imm | |
3829 | add dest, tmp, #:tlsgd_lo12:imm | |
3830 | bl __tls_get_addr | |
3831 | ||
3832 | Global Dynamic - TLS Descriptors: | |
3833 | adrp dest, :tlsdesc:imm | |
3834 | ldr tmp, [dest, #:tlsdesc_lo12:imm] | |
3835 | add dest, dest, #:tlsdesc_lo12:imm | |
3836 | blr tmp | |
3837 | mrs tp, tpidr_el0 | |
3838 | add dest, dest, tp | |
3839 | ||
3840 | Initial Exec: | |
3841 | mrs tp, tpidr_el0 | |
3842 | adrp tmp, :gottprel:imm | |
3843 | ldr dest, [tmp, #:gottprel_lo12:imm] | |
3844 | add dest, dest, tp | |
3845 | ||
3846 | Local Exec: | |
3847 | mrs tp, tpidr_el0 | |
0699caae RL |
3848 | add t0, tp, #:tprel_hi12:imm, lsl #12 |
3849 | add t0, t0, #:tprel_lo12_nc:imm | |
43e9d192 IB |
3850 | */ |
3851 | ||
3852 | static void | |
3853 | aarch64_load_symref_appropriately (rtx dest, rtx imm, | |
3854 | enum aarch64_symbol_type type) | |
3855 | { | |
3856 | switch (type) | |
3857 | { | |
3858 | case SYMBOL_SMALL_ABSOLUTE: | |
3859 | { | |
28514dda | 3860 | /* In ILP32, the mode of dest can be either SImode or DImode. */ |
43e9d192 | 3861 | rtx tmp_reg = dest; |
ef4bddc2 | 3862 | machine_mode mode = GET_MODE (dest); |
28514dda YZ |
3863 | |
3864 | gcc_assert (mode == Pmode || mode == ptr_mode); | |
3865 | ||
43e9d192 | 3866 | if (can_create_pseudo_p ()) |
28514dda | 3867 | tmp_reg = gen_reg_rtx (mode); |
43e9d192 | 3868 | |
28514dda | 3869 | emit_move_insn (tmp_reg, gen_rtx_HIGH (mode, imm)); |
43e9d192 IB |
3870 | emit_insn (gen_add_losym (dest, tmp_reg, imm)); |
3871 | return; | |
3872 | } | |
3873 | ||
a5350ddc | 3874 | case SYMBOL_TINY_ABSOLUTE: |
f7df4a84 | 3875 | emit_insn (gen_rtx_SET (dest, imm)); |
a5350ddc CSS |
3876 | return; |
3877 | ||
1b1e81f8 JW |
3878 | case SYMBOL_SMALL_GOT_28K: |
3879 | { | |
3880 | machine_mode mode = GET_MODE (dest); | |
3881 | rtx gp_rtx = pic_offset_table_rtx; | |
53021678 JW |
3882 | rtx insn; |
3883 | rtx mem; | |
1b1e81f8 JW |
3884 | |
3885 | /* NOTE: pic_offset_table_rtx can be NULL_RTX, because we can reach | |
3886 | here before rtl expand. Tree IVOPT will generate rtl pattern to | |
3887 | decide rtx costs, in which case pic_offset_table_rtx is not | |
3888 | initialized. For that case no need to generate the first adrp | |
026c3cfd | 3889 | instruction as the final cost for global variable access is |
1b1e81f8 JW |
3890 | one instruction. */ |
3891 | if (gp_rtx != NULL) | |
3892 | { | |
3893 | /* -fpic for -mcmodel=small allow 32K GOT table size (but we are | |
3894 | using the page base as GOT base, the first page may be wasted, | |
3895 | in the worst scenario, there is only 28K space for GOT). | |
3896 | ||
3897 | The generate instruction sequence for accessing global variable | |
3898 | is: | |
3899 | ||
a3957742 | 3900 | ldr reg, [pic_offset_table_rtx, #:gotpage_lo15:sym] |
1b1e81f8 JW |
3901 | |
3902 | Only one instruction needed. But we must initialize | |
3903 | pic_offset_table_rtx properly. We generate initialize insn for | |
3904 | every global access, and allow CSE to remove all redundant. | |
3905 | ||
3906 | The final instruction sequences will look like the following | |
3907 | for multiply global variables access. | |
3908 | ||
a3957742 | 3909 | adrp pic_offset_table_rtx, _GLOBAL_OFFSET_TABLE_ |
1b1e81f8 | 3910 | |
a3957742 JW |
3911 | ldr reg, [pic_offset_table_rtx, #:gotpage_lo15:sym1] |
3912 | ldr reg, [pic_offset_table_rtx, #:gotpage_lo15:sym2] | |
3913 | ldr reg, [pic_offset_table_rtx, #:gotpage_lo15:sym3] | |
3914 | ... */ | |
1b1e81f8 JW |
3915 | |
3916 | rtx s = gen_rtx_SYMBOL_REF (Pmode, "_GLOBAL_OFFSET_TABLE_"); | |
3917 | crtl->uses_pic_offset_table = 1; | |
3918 | emit_move_insn (gp_rtx, gen_rtx_HIGH (Pmode, s)); | |
3919 | ||
3920 | if (mode != GET_MODE (gp_rtx)) | |
4ba8f0a3 AP |
3921 | gp_rtx = gen_lowpart (mode, gp_rtx); |
3922 | ||
1b1e81f8 JW |
3923 | } |
3924 | ||
3925 | if (mode == ptr_mode) | |
3926 | { | |
3927 | if (mode == DImode) | |
53021678 | 3928 | insn = gen_ldr_got_small_28k_di (dest, gp_rtx, imm); |
1b1e81f8 | 3929 | else |
53021678 JW |
3930 | insn = gen_ldr_got_small_28k_si (dest, gp_rtx, imm); |
3931 | ||
3932 | mem = XVECEXP (SET_SRC (insn), 0, 0); | |
1b1e81f8 JW |
3933 | } |
3934 | else | |
3935 | { | |
3936 | gcc_assert (mode == Pmode); | |
53021678 JW |
3937 | |
3938 | insn = gen_ldr_got_small_28k_sidi (dest, gp_rtx, imm); | |
3939 | mem = XVECEXP (XEXP (SET_SRC (insn), 0), 0, 0); | |
1b1e81f8 JW |
3940 | } |
3941 | ||
53021678 JW |
3942 | /* The operand is expected to be MEM. Whenever the related insn |
3943 | pattern changed, above code which calculate mem should be | |
3944 | updated. */ | |
3793ecc1 | 3945 | gcc_assert (MEM_P (mem)); |
53021678 JW |
3946 | MEM_READONLY_P (mem) = 1; |
3947 | MEM_NOTRAP_P (mem) = 1; | |
3948 | emit_insn (insn); | |
1b1e81f8 JW |
3949 | return; |
3950 | } | |
3951 | ||
6642bdb4 | 3952 | case SYMBOL_SMALL_GOT_4G: |
a195c727 WD |
3953 | emit_insn (gen_rtx_SET (dest, imm)); |
3954 | return; | |
43e9d192 IB |
3955 | |
3956 | case SYMBOL_SMALL_TLSGD: | |
3957 | { | |
5d8a22a5 | 3958 | rtx_insn *insns; |
87ca615a AP |
3959 | /* The return type of __tls_get_addr is the C pointer type |
3960 | so use ptr_mode. */ | |
3961 | rtx result = gen_rtx_REG (ptr_mode, R0_REGNUM); | |
3962 | rtx tmp_reg = dest; | |
3963 | ||
3964 | if (GET_MODE (dest) != ptr_mode) | |
3965 | tmp_reg = can_create_pseudo_p () ? gen_reg_rtx (ptr_mode) : result; | |
43e9d192 IB |
3966 | |
3967 | start_sequence (); | |
87ca615a | 3968 | if (ptr_mode == SImode) |
23b88fda N |
3969 | aarch64_emit_call_insn (gen_tlsgd_small_si (result, imm)); |
3970 | else | |
3971 | aarch64_emit_call_insn (gen_tlsgd_small_di (result, imm)); | |
43e9d192 IB |
3972 | insns = get_insns (); |
3973 | end_sequence (); | |
3974 | ||
3975 | RTL_CONST_CALL_P (insns) = 1; | |
87ca615a AP |
3976 | emit_libcall_block (insns, tmp_reg, result, imm); |
3977 | /* Convert back to the mode of the dest adding a zero_extend | |
3978 | from SImode (ptr_mode) to DImode (Pmode). */ | |
3979 | if (dest != tmp_reg) | |
3980 | convert_move (dest, tmp_reg, true); | |
43e9d192 IB |
3981 | return; |
3982 | } | |
3983 | ||
3984 | case SYMBOL_SMALL_TLSDESC: | |
3985 | { | |
ef4bddc2 | 3986 | machine_mode mode = GET_MODE (dest); |
621ad2de | 3987 | rtx x0 = gen_rtx_REG (mode, R0_REGNUM); |
43e9d192 IB |
3988 | rtx tp; |
3989 | ||
621ad2de AP |
3990 | gcc_assert (mode == Pmode || mode == ptr_mode); |
3991 | ||
2876a13f JW |
3992 | /* In ILP32, the got entry is always of SImode size. Unlike |
3993 | small GOT, the dest is fixed at reg 0. */ | |
3994 | if (TARGET_ILP32) | |
3995 | emit_insn (gen_tlsdesc_small_si (imm)); | |
621ad2de | 3996 | else |
2876a13f | 3997 | emit_insn (gen_tlsdesc_small_di (imm)); |
43e9d192 | 3998 | tp = aarch64_load_tp (NULL); |
621ad2de AP |
3999 | |
4000 | if (mode != Pmode) | |
4001 | tp = gen_lowpart (mode, tp); | |
4002 | ||
2876a13f | 4003 | emit_insn (gen_rtx_SET (dest, gen_rtx_PLUS (mode, tp, x0))); |
241dbd9d QZ |
4004 | if (REG_P (dest)) |
4005 | set_unique_reg_note (get_last_insn (), REG_EQUIV, imm); | |
43e9d192 IB |
4006 | return; |
4007 | } | |
4008 | ||
79496620 | 4009 | case SYMBOL_SMALL_TLSIE: |
43e9d192 | 4010 | { |
621ad2de AP |
4011 | /* In ILP32, the mode of dest can be either SImode or DImode, |
4012 | while the got entry is always of SImode size. The mode of | |
4013 | dest depends on how dest is used: if dest is assigned to a | |
4014 | pointer (e.g. in the memory), it has SImode; it may have | |
4015 | DImode if dest is dereferenced to access the memeory. | |
4016 | This is why we have to handle three different tlsie_small | |
4017 | patterns here (two patterns for ILP32). */ | |
ef4bddc2 | 4018 | machine_mode mode = GET_MODE (dest); |
621ad2de | 4019 | rtx tmp_reg = gen_reg_rtx (mode); |
43e9d192 | 4020 | rtx tp = aarch64_load_tp (NULL); |
621ad2de AP |
4021 | |
4022 | if (mode == ptr_mode) | |
4023 | { | |
4024 | if (mode == DImode) | |
4025 | emit_insn (gen_tlsie_small_di (tmp_reg, imm)); | |
4026 | else | |
4027 | { | |
4028 | emit_insn (gen_tlsie_small_si (tmp_reg, imm)); | |
4029 | tp = gen_lowpart (mode, tp); | |
4030 | } | |
4031 | } | |
4032 | else | |
4033 | { | |
4034 | gcc_assert (mode == Pmode); | |
4035 | emit_insn (gen_tlsie_small_sidi (tmp_reg, imm)); | |
4036 | } | |
4037 | ||
f7df4a84 | 4038 | emit_insn (gen_rtx_SET (dest, gen_rtx_PLUS (mode, tp, tmp_reg))); |
241dbd9d QZ |
4039 | if (REG_P (dest)) |
4040 | set_unique_reg_note (get_last_insn (), REG_EQUIV, imm); | |
43e9d192 IB |
4041 | return; |
4042 | } | |
4043 | ||
cbf5629e | 4044 | case SYMBOL_TLSLE12: |
d18ba284 | 4045 | case SYMBOL_TLSLE24: |
cbf5629e JW |
4046 | case SYMBOL_TLSLE32: |
4047 | case SYMBOL_TLSLE48: | |
43e9d192 | 4048 | { |
cbf5629e | 4049 | machine_mode mode = GET_MODE (dest); |
43e9d192 | 4050 | rtx tp = aarch64_load_tp (NULL); |
e6f7f0e9 | 4051 | |
cbf5629e JW |
4052 | if (mode != Pmode) |
4053 | tp = gen_lowpart (mode, tp); | |
4054 | ||
4055 | switch (type) | |
4056 | { | |
4057 | case SYMBOL_TLSLE12: | |
4058 | emit_insn ((mode == DImode ? gen_tlsle12_di : gen_tlsle12_si) | |
4059 | (dest, tp, imm)); | |
4060 | break; | |
4061 | case SYMBOL_TLSLE24: | |
4062 | emit_insn ((mode == DImode ? gen_tlsle24_di : gen_tlsle24_si) | |
4063 | (dest, tp, imm)); | |
4064 | break; | |
4065 | case SYMBOL_TLSLE32: | |
4066 | emit_insn ((mode == DImode ? gen_tlsle32_di : gen_tlsle32_si) | |
4067 | (dest, imm)); | |
4068 | emit_insn ((mode == DImode ? gen_adddi3 : gen_addsi3) | |
4069 | (dest, dest, tp)); | |
4070 | break; | |
4071 | case SYMBOL_TLSLE48: | |
4072 | emit_insn ((mode == DImode ? gen_tlsle48_di : gen_tlsle48_si) | |
4073 | (dest, imm)); | |
4074 | emit_insn ((mode == DImode ? gen_adddi3 : gen_addsi3) | |
4075 | (dest, dest, tp)); | |
4076 | break; | |
4077 | default: | |
4078 | gcc_unreachable (); | |
4079 | } | |
e6f7f0e9 | 4080 | |
241dbd9d QZ |
4081 | if (REG_P (dest)) |
4082 | set_unique_reg_note (get_last_insn (), REG_EQUIV, imm); | |
43e9d192 IB |
4083 | return; |
4084 | } | |
4085 | ||
87dd8ab0 | 4086 | case SYMBOL_TINY_GOT: |
d91480de D |
4087 | { |
4088 | rtx insn; | |
4089 | machine_mode mode = GET_MODE (dest); | |
4090 | ||
4091 | if (mode == ptr_mode) | |
4092 | insn = gen_ldr_got_tiny (mode, dest, imm); | |
4093 | else | |
4094 | { | |
4095 | gcc_assert (mode == Pmode); | |
4096 | insn = gen_ldr_got_tiny_sidi (dest, imm); | |
4097 | } | |
4098 | ||
4099 | emit_insn (insn); | |
4100 | return; | |
4101 | } | |
87dd8ab0 | 4102 | |
5ae7caad JW |
4103 | case SYMBOL_TINY_TLSIE: |
4104 | { | |
4105 | machine_mode mode = GET_MODE (dest); | |
4106 | rtx tp = aarch64_load_tp (NULL); | |
4107 | ||
4108 | if (mode == ptr_mode) | |
4109 | { | |
4110 | if (mode == DImode) | |
4111 | emit_insn (gen_tlsie_tiny_di (dest, imm, tp)); | |
4112 | else | |
4113 | { | |
4114 | tp = gen_lowpart (mode, tp); | |
4115 | emit_insn (gen_tlsie_tiny_si (dest, imm, tp)); | |
4116 | } | |
4117 | } | |
4118 | else | |
4119 | { | |
4120 | gcc_assert (mode == Pmode); | |
4121 | emit_insn (gen_tlsie_tiny_sidi (dest, imm, tp)); | |
4122 | } | |
4123 | ||
241dbd9d QZ |
4124 | if (REG_P (dest)) |
4125 | set_unique_reg_note (get_last_insn (), REG_EQUIV, imm); | |
5ae7caad JW |
4126 | return; |
4127 | } | |
4128 | ||
43e9d192 IB |
4129 | default: |
4130 | gcc_unreachable (); | |
4131 | } | |
4132 | } | |
4133 | ||
4134 | /* Emit a move from SRC to DEST. Assume that the move expanders can | |
4135 | handle all moves if !can_create_pseudo_p (). The distinction is | |
4136 | important because, unlike emit_move_insn, the move expanders know | |
4137 | how to force Pmode objects into the constant pool even when the | |
4138 | constant pool address is not itself legitimate. */ | |
4139 | static rtx | |
4140 | aarch64_emit_move (rtx dest, rtx src) | |
4141 | { | |
4142 | return (can_create_pseudo_p () | |
4143 | ? emit_move_insn (dest, src) | |
4144 | : emit_move_insn_1 (dest, src)); | |
4145 | } | |
4146 | ||
f22d7973 RS |
4147 | /* Apply UNOPTAB to OP and store the result in DEST. */ |
4148 | ||
4149 | static void | |
4150 | aarch64_emit_unop (rtx dest, optab unoptab, rtx op) | |
4151 | { | |
4152 | rtx tmp = expand_unop (GET_MODE (dest), unoptab, op, dest, 0); | |
4153 | if (dest != tmp) | |
4154 | emit_move_insn (dest, tmp); | |
4155 | } | |
4156 | ||
4157 | /* Apply BINOPTAB to OP0 and OP1 and store the result in DEST. */ | |
4158 | ||
4159 | static void | |
4160 | aarch64_emit_binop (rtx dest, optab binoptab, rtx op0, rtx op1) | |
4161 | { | |
4162 | rtx tmp = expand_binop (GET_MODE (dest), binoptab, op0, op1, dest, 0, | |
4163 | OPTAB_DIRECT); | |
4164 | if (dest != tmp) | |
4165 | emit_move_insn (dest, tmp); | |
4166 | } | |
4167 | ||
030d03b8 RE |
4168 | /* Split a 128-bit move operation into two 64-bit move operations, |
4169 | taking care to handle partial overlap of register to register | |
4170 | copies. Special cases are needed when moving between GP regs and | |
4171 | FP regs. SRC can be a register, constant or memory; DST a register | |
4172 | or memory. If either operand is memory it must not have any side | |
4173 | effects. */ | |
43e9d192 IB |
4174 | void |
4175 | aarch64_split_128bit_move (rtx dst, rtx src) | |
4176 | { | |
030d03b8 RE |
4177 | rtx dst_lo, dst_hi; |
4178 | rtx src_lo, src_hi; | |
43e9d192 | 4179 | |
ef4bddc2 | 4180 | machine_mode mode = GET_MODE (dst); |
12dc6974 | 4181 | |
030d03b8 RE |
4182 | gcc_assert (mode == TImode || mode == TFmode); |
4183 | gcc_assert (!(side_effects_p (src) || side_effects_p (dst))); | |
4184 | gcc_assert (mode == GET_MODE (src) || GET_MODE (src) == VOIDmode); | |
43e9d192 IB |
4185 | |
4186 | if (REG_P (dst) && REG_P (src)) | |
4187 | { | |
030d03b8 RE |
4188 | int src_regno = REGNO (src); |
4189 | int dst_regno = REGNO (dst); | |
43e9d192 | 4190 | |
030d03b8 | 4191 | /* Handle FP <-> GP regs. */ |
43e9d192 IB |
4192 | if (FP_REGNUM_P (dst_regno) && GP_REGNUM_P (src_regno)) |
4193 | { | |
030d03b8 RE |
4194 | src_lo = gen_lowpart (word_mode, src); |
4195 | src_hi = gen_highpart (word_mode, src); | |
4196 | ||
0016d8d9 RS |
4197 | emit_insn (gen_aarch64_movlow_di (mode, dst, src_lo)); |
4198 | emit_insn (gen_aarch64_movhigh_di (mode, dst, src_hi)); | |
030d03b8 | 4199 | return; |
43e9d192 IB |
4200 | } |
4201 | else if (GP_REGNUM_P (dst_regno) && FP_REGNUM_P (src_regno)) | |
4202 | { | |
030d03b8 RE |
4203 | dst_lo = gen_lowpart (word_mode, dst); |
4204 | dst_hi = gen_highpart (word_mode, dst); | |
4205 | ||
0016d8d9 RS |
4206 | emit_insn (gen_aarch64_movdi_low (mode, dst_lo, src)); |
4207 | emit_insn (gen_aarch64_movdi_high (mode, dst_hi, src)); | |
030d03b8 | 4208 | return; |
43e9d192 | 4209 | } |
43e9d192 IB |
4210 | } |
4211 | ||
030d03b8 RE |
4212 | dst_lo = gen_lowpart (word_mode, dst); |
4213 | dst_hi = gen_highpart (word_mode, dst); | |
4214 | src_lo = gen_lowpart (word_mode, src); | |
4215 | src_hi = gen_highpart_mode (word_mode, mode, src); | |
4216 | ||
4217 | /* At most one pairing may overlap. */ | |
4218 | if (reg_overlap_mentioned_p (dst_lo, src_hi)) | |
4219 | { | |
4220 | aarch64_emit_move (dst_hi, src_hi); | |
4221 | aarch64_emit_move (dst_lo, src_lo); | |
4222 | } | |
4223 | else | |
4224 | { | |
4225 | aarch64_emit_move (dst_lo, src_lo); | |
4226 | aarch64_emit_move (dst_hi, src_hi); | |
4227 | } | |
43e9d192 IB |
4228 | } |
4229 | ||
d4f9e819 RS |
4230 | /* Return true if we should split a move from 128-bit value SRC |
4231 | to 128-bit register DEST. */ | |
4232 | ||
43e9d192 IB |
4233 | bool |
4234 | aarch64_split_128bit_move_p (rtx dst, rtx src) | |
4235 | { | |
d4f9e819 RS |
4236 | if (FP_REGNUM_P (REGNO (dst))) |
4237 | return REG_P (src) && !FP_REGNUM_P (REGNO (src)); | |
4238 | /* All moves to GPRs need to be split. */ | |
4239 | return true; | |
43e9d192 IB |
4240 | } |
4241 | ||
8b033a8a SN |
4242 | /* Split a complex SIMD combine. */ |
4243 | ||
4244 | void | |
4245 | aarch64_split_simd_combine (rtx dst, rtx src1, rtx src2) | |
4246 | { | |
ef4bddc2 RS |
4247 | machine_mode src_mode = GET_MODE (src1); |
4248 | machine_mode dst_mode = GET_MODE (dst); | |
8b033a8a SN |
4249 | |
4250 | gcc_assert (VECTOR_MODE_P (dst_mode)); | |
a977dc0c MC |
4251 | gcc_assert (register_operand (dst, dst_mode) |
4252 | && register_operand (src1, src_mode) | |
4253 | && register_operand (src2, src_mode)); | |
8b033a8a | 4254 | |
0016d8d9 | 4255 | emit_insn (gen_aarch64_simd_combine (src_mode, dst, src1, src2)); |
a977dc0c | 4256 | return; |
8b033a8a SN |
4257 | } |
4258 | ||
fd4842cd SN |
4259 | /* Split a complex SIMD move. */ |
4260 | ||
4261 | void | |
4262 | aarch64_split_simd_move (rtx dst, rtx src) | |
4263 | { | |
ef4bddc2 RS |
4264 | machine_mode src_mode = GET_MODE (src); |
4265 | machine_mode dst_mode = GET_MODE (dst); | |
fd4842cd SN |
4266 | |
4267 | gcc_assert (VECTOR_MODE_P (dst_mode)); | |
4268 | ||
4269 | if (REG_P (dst) && REG_P (src)) | |
4270 | { | |
4271 | gcc_assert (VECTOR_MODE_P (src_mode)); | |
0016d8d9 | 4272 | emit_insn (gen_aarch64_split_simd_mov (src_mode, dst, src)); |
fd4842cd SN |
4273 | } |
4274 | } | |
4275 | ||
ef22810a RH |
4276 | bool |
4277 | aarch64_zero_extend_const_eq (machine_mode xmode, rtx x, | |
4278 | machine_mode ymode, rtx y) | |
4279 | { | |
4280 | rtx r = simplify_const_unary_operation (ZERO_EXTEND, xmode, y, ymode); | |
4281 | gcc_assert (r != NULL); | |
4282 | return rtx_equal_p (x, r); | |
4283 | } | |
ef22810a | 4284 | |
678faefc RS |
4285 | /* Return TARGET if it is nonnull and a register of mode MODE. |
4286 | Otherwise, return a fresh register of mode MODE if we can, | |
4287 | or TARGET reinterpreted as MODE if we can't. */ | |
4288 | ||
4289 | static rtx | |
4290 | aarch64_target_reg (rtx target, machine_mode mode) | |
4291 | { | |
4292 | if (target && REG_P (target) && GET_MODE (target) == mode) | |
4293 | return target; | |
4294 | if (!can_create_pseudo_p ()) | |
4295 | { | |
4296 | gcc_assert (target); | |
4297 | return gen_lowpart (mode, target); | |
4298 | } | |
4299 | return gen_reg_rtx (mode); | |
4300 | } | |
4301 | ||
4302 | /* Return a register that contains the constant in BUILDER, given that | |
4303 | the constant is a legitimate move operand. Use TARGET as the register | |
4304 | if it is nonnull and convenient. */ | |
4305 | ||
4306 | static rtx | |
4307 | aarch64_emit_set_immediate (rtx target, rtx_vector_builder &builder) | |
4308 | { | |
4309 | rtx src = builder.build (); | |
4310 | target = aarch64_target_reg (target, GET_MODE (src)); | |
4311 | emit_insn (gen_rtx_SET (target, src)); | |
4312 | return target; | |
4313 | } | |
4314 | ||
43e9d192 | 4315 | static rtx |
ef4bddc2 | 4316 | aarch64_force_temporary (machine_mode mode, rtx x, rtx value) |
43e9d192 IB |
4317 | { |
4318 | if (can_create_pseudo_p ()) | |
e18b4a81 | 4319 | return force_reg (mode, value); |
43e9d192 IB |
4320 | else |
4321 | { | |
f5470a77 RS |
4322 | gcc_assert (x); |
4323 | aarch64_emit_move (x, value); | |
43e9d192 IB |
4324 | return x; |
4325 | } | |
4326 | } | |
4327 | ||
0b1fe8cf RS |
4328 | /* Return true if predicate value X is a constant in which every element |
4329 | is a CONST_INT. When returning true, describe X in BUILDER as a VNx16BI | |
4330 | value, i.e. as a predicate in which all bits are significant. */ | |
4331 | ||
4332 | static bool | |
4333 | aarch64_get_sve_pred_bits (rtx_vector_builder &builder, rtx x) | |
4334 | { | |
568b9c0e | 4335 | if (!CONST_VECTOR_P (x)) |
0b1fe8cf RS |
4336 | return false; |
4337 | ||
4338 | unsigned int factor = vector_element_size (GET_MODE_NUNITS (VNx16BImode), | |
4339 | GET_MODE_NUNITS (GET_MODE (x))); | |
4340 | unsigned int npatterns = CONST_VECTOR_NPATTERNS (x) * factor; | |
4341 | unsigned int nelts_per_pattern = CONST_VECTOR_NELTS_PER_PATTERN (x); | |
4342 | builder.new_vector (VNx16BImode, npatterns, nelts_per_pattern); | |
4343 | ||
4344 | unsigned int nelts = const_vector_encoded_nelts (x); | |
4345 | for (unsigned int i = 0; i < nelts; ++i) | |
4346 | { | |
4347 | rtx elt = CONST_VECTOR_ENCODED_ELT (x, i); | |
4348 | if (!CONST_INT_P (elt)) | |
4349 | return false; | |
4350 | ||
4351 | builder.quick_push (elt); | |
4352 | for (unsigned int j = 1; j < factor; ++j) | |
4353 | builder.quick_push (const0_rtx); | |
4354 | } | |
4355 | builder.finalize (); | |
4356 | return true; | |
4357 | } | |
4358 | ||
4359 | /* BUILDER contains a predicate constant of mode VNx16BI. Return the | |
4360 | widest predicate element size it can have (that is, the largest size | |
4361 | for which each element would still be 0 or 1). */ | |
4362 | ||
4363 | unsigned int | |
4364 | aarch64_widest_sve_pred_elt_size (rtx_vector_builder &builder) | |
4365 | { | |
4366 | /* Start with the most optimistic assumption: that we only need | |
4367 | one bit per pattern. This is what we will use if only the first | |
4368 | bit in each pattern is ever set. */ | |
4369 | unsigned int mask = GET_MODE_SIZE (DImode); | |
4370 | mask |= builder.npatterns (); | |
4371 | ||
4372 | /* Look for set bits. */ | |
4373 | unsigned int nelts = builder.encoded_nelts (); | |
4374 | for (unsigned int i = 1; i < nelts; ++i) | |
4375 | if (INTVAL (builder.elt (i)) != 0) | |
4376 | { | |
4377 | if (i & 1) | |
4378 | return 1; | |
4379 | mask |= i; | |
4380 | } | |
4381 | return mask & -mask; | |
4382 | } | |
4383 | ||
624d0f07 RS |
4384 | /* If VNx16BImode rtx X is a canonical PTRUE for a predicate mode, |
4385 | return that predicate mode, otherwise return opt_machine_mode (). */ | |
4386 | ||
4387 | opt_machine_mode | |
4388 | aarch64_ptrue_all_mode (rtx x) | |
4389 | { | |
4390 | gcc_assert (GET_MODE (x) == VNx16BImode); | |
568b9c0e | 4391 | if (!CONST_VECTOR_P (x) |
624d0f07 RS |
4392 | || !CONST_VECTOR_DUPLICATE_P (x) |
4393 | || !CONST_INT_P (CONST_VECTOR_ENCODED_ELT (x, 0)) | |
4394 | || INTVAL (CONST_VECTOR_ENCODED_ELT (x, 0)) == 0) | |
4395 | return opt_machine_mode (); | |
4396 | ||
4397 | unsigned int nelts = const_vector_encoded_nelts (x); | |
4398 | for (unsigned int i = 1; i < nelts; ++i) | |
4399 | if (CONST_VECTOR_ENCODED_ELT (x, i) != const0_rtx) | |
4400 | return opt_machine_mode (); | |
4401 | ||
4402 | return aarch64_sve_pred_mode (nelts); | |
4403 | } | |
4404 | ||
0b1fe8cf RS |
4405 | /* BUILDER is a predicate constant of mode VNx16BI. Consider the value |
4406 | that the constant would have with predicate element size ELT_SIZE | |
4407 | (ignoring the upper bits in each element) and return: | |
4408 | ||
4409 | * -1 if all bits are set | |
4410 | * N if the predicate has N leading set bits followed by all clear bits | |
4411 | * 0 if the predicate does not have any of these forms. */ | |
4412 | ||
4413 | int | |
4414 | aarch64_partial_ptrue_length (rtx_vector_builder &builder, | |
4415 | unsigned int elt_size) | |
4416 | { | |
4417 | /* If nelts_per_pattern is 3, we have set bits followed by clear bits | |
4418 | followed by set bits. */ | |
4419 | if (builder.nelts_per_pattern () == 3) | |
4420 | return 0; | |
4421 | ||
4422 | /* Skip over leading set bits. */ | |
4423 | unsigned int nelts = builder.encoded_nelts (); | |
4424 | unsigned int i = 0; | |
4425 | for (; i < nelts; i += elt_size) | |
4426 | if (INTVAL (builder.elt (i)) == 0) | |
4427 | break; | |
4428 | unsigned int vl = i / elt_size; | |
4429 | ||
4430 | /* Check for the all-true case. */ | |
4431 | if (i == nelts) | |
4432 | return -1; | |
4433 | ||
4434 | /* If nelts_per_pattern is 1, then either VL is zero, or we have a | |
4435 | repeating pattern of set bits followed by clear bits. */ | |
4436 | if (builder.nelts_per_pattern () != 2) | |
4437 | return 0; | |
4438 | ||
4439 | /* We have a "foreground" value and a duplicated "background" value. | |
4440 | If the background might repeat and the last set bit belongs to it, | |
4441 | we might have set bits followed by clear bits followed by set bits. */ | |
4442 | if (i > builder.npatterns () && maybe_ne (nelts, builder.full_nelts ())) | |
4443 | return 0; | |
4444 | ||
4445 | /* Make sure that the rest are all clear. */ | |
4446 | for (; i < nelts; i += elt_size) | |
4447 | if (INTVAL (builder.elt (i)) != 0) | |
4448 | return 0; | |
4449 | ||
4450 | return vl; | |
4451 | } | |
4452 | ||
4453 | /* See if there is an svpattern that encodes an SVE predicate of mode | |
4454 | PRED_MODE in which the first VL bits are set and the rest are clear. | |
4455 | Return the pattern if so, otherwise return AARCH64_NUM_SVPATTERNS. | |
4456 | A VL of -1 indicates an all-true vector. */ | |
4457 | ||
4458 | aarch64_svpattern | |
4459 | aarch64_svpattern_for_vl (machine_mode pred_mode, int vl) | |
4460 | { | |
4461 | if (vl < 0) | |
4462 | return AARCH64_SV_ALL; | |
4463 | ||
4464 | if (maybe_gt (vl, GET_MODE_NUNITS (pred_mode))) | |
4465 | return AARCH64_NUM_SVPATTERNS; | |
4466 | ||
4467 | if (vl >= 1 && vl <= 8) | |
4468 | return aarch64_svpattern (AARCH64_SV_VL1 + (vl - 1)); | |
4469 | ||
4470 | if (vl >= 16 && vl <= 256 && pow2p_hwi (vl)) | |
4471 | return aarch64_svpattern (AARCH64_SV_VL16 + (exact_log2 (vl) - 4)); | |
4472 | ||
4473 | int max_vl; | |
4474 | if (GET_MODE_NUNITS (pred_mode).is_constant (&max_vl)) | |
4475 | { | |
4476 | if (vl == (max_vl / 3) * 3) | |
4477 | return AARCH64_SV_MUL3; | |
4478 | /* These would only trigger for non-power-of-2 lengths. */ | |
4479 | if (vl == (max_vl & -4)) | |
4480 | return AARCH64_SV_MUL4; | |
4481 | if (vl == (1 << floor_log2 (max_vl))) | |
4482 | return AARCH64_SV_POW2; | |
4483 | if (vl == max_vl) | |
4484 | return AARCH64_SV_ALL; | |
4485 | } | |
4486 | return AARCH64_NUM_SVPATTERNS; | |
4487 | } | |
4488 | ||
34467289 RS |
4489 | /* Return a VNx16BImode constant in which every sequence of ELT_SIZE |
4490 | bits has the lowest bit set and the upper bits clear. This is the | |
4491 | VNx16BImode equivalent of a PTRUE for controlling elements of | |
4492 | ELT_SIZE bytes. However, because the constant is VNx16BImode, | |
4493 | all bits are significant, even the upper zeros. */ | |
4494 | ||
4495 | rtx | |
4496 | aarch64_ptrue_all (unsigned int elt_size) | |
4497 | { | |
4498 | rtx_vector_builder builder (VNx16BImode, elt_size, 1); | |
4499 | builder.quick_push (const1_rtx); | |
4500 | for (unsigned int i = 1; i < elt_size; ++i) | |
4501 | builder.quick_push (const0_rtx); | |
4502 | return builder.build (); | |
4503 | } | |
4504 | ||
16de3637 RS |
4505 | /* Return an all-true predicate register of mode MODE. */ |
4506 | ||
4507 | rtx | |
4508 | aarch64_ptrue_reg (machine_mode mode) | |
4509 | { | |
4510 | gcc_assert (GET_MODE_CLASS (mode) == MODE_VECTOR_BOOL); | |
678faefc RS |
4511 | rtx reg = force_reg (VNx16BImode, CONSTM1_RTX (VNx16BImode)); |
4512 | return gen_lowpart (mode, reg); | |
16de3637 RS |
4513 | } |
4514 | ||
e7053b0c RS |
4515 | /* Return an all-false predicate register of mode MODE. */ |
4516 | ||
4517 | rtx | |
4518 | aarch64_pfalse_reg (machine_mode mode) | |
4519 | { | |
4520 | gcc_assert (GET_MODE_CLASS (mode) == MODE_VECTOR_BOOL); | |
678faefc RS |
4521 | rtx reg = force_reg (VNx16BImode, CONST0_RTX (VNx16BImode)); |
4522 | return gen_lowpart (mode, reg); | |
4523 | } | |
4524 | ||
00fa90d9 RS |
4525 | /* PRED1[0] is a PTEST predicate and PRED1[1] is an aarch64_sve_ptrue_flag |
4526 | for it. PRED2[0] is the predicate for the instruction whose result | |
4527 | is tested by the PTEST and PRED2[1] is again an aarch64_sve_ptrue_flag | |
4528 | for it. Return true if we can prove that the two predicates are | |
4529 | equivalent for PTEST purposes; that is, if we can replace PRED2[0] | |
4530 | with PRED1[0] without changing behavior. */ | |
4531 | ||
4532 | bool | |
4533 | aarch64_sve_same_pred_for_ptest_p (rtx *pred1, rtx *pred2) | |
4534 | { | |
4535 | machine_mode mode = GET_MODE (pred1[0]); | |
4536 | gcc_assert (GET_MODE_CLASS (mode) == MODE_VECTOR_BOOL | |
4537 | && mode == GET_MODE (pred2[0]) | |
4538 | && aarch64_sve_ptrue_flag (pred1[1], SImode) | |
4539 | && aarch64_sve_ptrue_flag (pred2[1], SImode)); | |
4540 | ||
4541 | bool ptrue1_p = (pred1[0] == CONSTM1_RTX (mode) | |
4542 | || INTVAL (pred1[1]) == SVE_KNOWN_PTRUE); | |
4543 | bool ptrue2_p = (pred2[0] == CONSTM1_RTX (mode) | |
4544 | || INTVAL (pred2[1]) == SVE_KNOWN_PTRUE); | |
4545 | return (ptrue1_p && ptrue2_p) || rtx_equal_p (pred1[0], pred2[0]); | |
4546 | } | |
4547 | ||
4548 | /* Emit a comparison CMP between OP0 and OP1, both of which have mode | |
4549 | DATA_MODE, and return the result in a predicate of mode PRED_MODE. | |
4550 | Use TARGET as the target register if nonnull and convenient. */ | |
4551 | ||
4552 | static rtx | |
4553 | aarch64_sve_emit_int_cmp (rtx target, machine_mode pred_mode, rtx_code cmp, | |
4554 | machine_mode data_mode, rtx op1, rtx op2) | |
4555 | { | |
4556 | insn_code icode = code_for_aarch64_pred_cmp (cmp, data_mode); | |
4557 | expand_operand ops[5]; | |
4558 | create_output_operand (&ops[0], target, pred_mode); | |
4559 | create_input_operand (&ops[1], CONSTM1_RTX (pred_mode), pred_mode); | |
4560 | create_integer_operand (&ops[2], SVE_KNOWN_PTRUE); | |
4561 | create_input_operand (&ops[3], op1, data_mode); | |
4562 | create_input_operand (&ops[4], op2, data_mode); | |
4563 | expand_insn (icode, 5, ops); | |
4564 | return ops[0].value; | |
4565 | } | |
4566 | ||
678faefc RS |
4567 | /* Use a comparison to convert integer vector SRC into MODE, which is |
4568 | the corresponding SVE predicate mode. Use TARGET for the result | |
4569 | if it's nonnull and convenient. */ | |
4570 | ||
624d0f07 | 4571 | rtx |
678faefc RS |
4572 | aarch64_convert_sve_data_to_pred (rtx target, machine_mode mode, rtx src) |
4573 | { | |
4574 | machine_mode src_mode = GET_MODE (src); | |
00fa90d9 RS |
4575 | return aarch64_sve_emit_int_cmp (target, mode, NE, src_mode, |
4576 | src, CONST0_RTX (src_mode)); | |
e7053b0c RS |
4577 | } |
4578 | ||
624d0f07 RS |
4579 | /* Return the assembly token for svprfop value PRFOP. */ |
4580 | ||
4581 | static const char * | |
4582 | svprfop_token (enum aarch64_svprfop prfop) | |
4583 | { | |
4584 | switch (prfop) | |
4585 | { | |
4586 | #define CASE(UPPER, LOWER, VALUE) case AARCH64_SV_##UPPER: return #LOWER; | |
4587 | AARCH64_FOR_SVPRFOP (CASE) | |
4588 | #undef CASE | |
4589 | case AARCH64_NUM_SVPRFOPS: | |
4590 | break; | |
4591 | } | |
4592 | gcc_unreachable (); | |
4593 | } | |
4594 | ||
4595 | /* Return the assembly string for an SVE prefetch operation with | |
4596 | mnemonic MNEMONIC, given that PRFOP_RTX is the prefetch operation | |
4597 | and that SUFFIX is the format for the remaining operands. */ | |
4598 | ||
4599 | char * | |
4600 | aarch64_output_sve_prefetch (const char *mnemonic, rtx prfop_rtx, | |
4601 | const char *suffix) | |
4602 | { | |
4603 | static char buffer[128]; | |
4604 | aarch64_svprfop prfop = (aarch64_svprfop) INTVAL (prfop_rtx); | |
4605 | unsigned int written = snprintf (buffer, sizeof (buffer), "%s\t%s, %s", | |
4606 | mnemonic, svprfop_token (prfop), suffix); | |
4607 | gcc_assert (written < sizeof (buffer)); | |
4608 | return buffer; | |
4609 | } | |
4610 | ||
4611 | /* Check whether we can calculate the number of elements in PATTERN | |
4612 | at compile time, given that there are NELTS_PER_VQ elements per | |
4613 | 128-bit block. Return the value if so, otherwise return -1. */ | |
4614 | ||
4615 | HOST_WIDE_INT | |
4616 | aarch64_fold_sve_cnt_pat (aarch64_svpattern pattern, unsigned int nelts_per_vq) | |
4617 | { | |
4618 | unsigned int vl, const_vg; | |
4619 | if (pattern >= AARCH64_SV_VL1 && pattern <= AARCH64_SV_VL8) | |
4620 | vl = 1 + (pattern - AARCH64_SV_VL1); | |
4621 | else if (pattern >= AARCH64_SV_VL16 && pattern <= AARCH64_SV_VL256) | |
4622 | vl = 16 << (pattern - AARCH64_SV_VL16); | |
4623 | else if (aarch64_sve_vg.is_constant (&const_vg)) | |
4624 | { | |
4625 | /* There are two vector granules per quadword. */ | |
4626 | unsigned int nelts = (const_vg / 2) * nelts_per_vq; | |
4627 | switch (pattern) | |
4628 | { | |
4629 | case AARCH64_SV_POW2: return 1 << floor_log2 (nelts); | |
4630 | case AARCH64_SV_MUL4: return nelts & -4; | |
4631 | case AARCH64_SV_MUL3: return (nelts / 3) * 3; | |
4632 | case AARCH64_SV_ALL: return nelts; | |
4633 | default: gcc_unreachable (); | |
4634 | } | |
4635 | } | |
4636 | else | |
4637 | return -1; | |
4638 | ||
4639 | /* There are two vector granules per quadword. */ | |
4640 | poly_uint64 nelts_all = exact_div (aarch64_sve_vg, 2) * nelts_per_vq; | |
4641 | if (known_le (vl, nelts_all)) | |
4642 | return vl; | |
4643 | ||
4644 | /* Requesting more elements than are available results in a PFALSE. */ | |
4645 | if (known_gt (vl, nelts_all)) | |
4646 | return 0; | |
4647 | ||
4648 | return -1; | |
4649 | } | |
4650 | ||
43cacb12 RS |
4651 | /* Return true if we can move VALUE into a register using a single |
4652 | CNT[BHWD] instruction. */ | |
4653 | ||
4654 | static bool | |
4655 | aarch64_sve_cnt_immediate_p (poly_int64 value) | |
4656 | { | |
4657 | HOST_WIDE_INT factor = value.coeffs[0]; | |
4658 | /* The coefficient must be [1, 16] * {2, 4, 8, 16}. */ | |
4659 | return (value.coeffs[1] == factor | |
4660 | && IN_RANGE (factor, 2, 16 * 16) | |
4661 | && (factor & 1) == 0 | |
4662 | && factor <= 16 * (factor & -factor)); | |
4663 | } | |
4664 | ||
4665 | /* Likewise for rtx X. */ | |
4666 | ||
4667 | bool | |
4668 | aarch64_sve_cnt_immediate_p (rtx x) | |
4669 | { | |
4670 | poly_int64 value; | |
4671 | return poly_int_rtx_p (x, &value) && aarch64_sve_cnt_immediate_p (value); | |
4672 | } | |
4673 | ||
4674 | /* Return the asm string for an instruction with a CNT-like vector size | |
4675 | operand (a vector pattern followed by a multiplier in the range [1, 16]). | |
4676 | PREFIX is the mnemonic without the size suffix and OPERANDS is the | |
4677 | first part of the operands template (the part that comes before the | |
139df05a RS |
4678 | vector size itself). PATTERN is the pattern to use. FACTOR is the |
4679 | number of quadwords. NELTS_PER_VQ, if nonzero, is the number of elements | |
4680 | in each quadword. If it is zero, we can use any element size. */ | |
43cacb12 RS |
4681 | |
4682 | static char * | |
4683 | aarch64_output_sve_cnt_immediate (const char *prefix, const char *operands, | |
139df05a | 4684 | aarch64_svpattern pattern, |
43cacb12 RS |
4685 | unsigned int factor, |
4686 | unsigned int nelts_per_vq) | |
4687 | { | |
139df05a | 4688 | static char buffer[sizeof ("sqincd\t%x0, %w0, vl256, mul #16")]; |
43cacb12 RS |
4689 | |
4690 | if (nelts_per_vq == 0) | |
4691 | /* There is some overlap in the ranges of the four CNT instructions. | |
4692 | Here we always use the smallest possible element size, so that the | |
4693 | multiplier is 1 whereever possible. */ | |
4694 | nelts_per_vq = factor & -factor; | |
4695 | int shift = std::min (exact_log2 (nelts_per_vq), 4); | |
4696 | gcc_assert (IN_RANGE (shift, 1, 4)); | |
4697 | char suffix = "dwhb"[shift - 1]; | |
4698 | ||
4699 | factor >>= shift; | |
4700 | unsigned int written; | |
139df05a | 4701 | if (pattern == AARCH64_SV_ALL && factor == 1) |
43cacb12 RS |
4702 | written = snprintf (buffer, sizeof (buffer), "%s%c\t%s", |
4703 | prefix, suffix, operands); | |
139df05a RS |
4704 | else if (factor == 1) |
4705 | written = snprintf (buffer, sizeof (buffer), "%s%c\t%s, %s", | |
4706 | prefix, suffix, operands, svpattern_token (pattern)); | |
43cacb12 | 4707 | else |
139df05a RS |
4708 | written = snprintf (buffer, sizeof (buffer), "%s%c\t%s, %s, mul #%d", |
4709 | prefix, suffix, operands, svpattern_token (pattern), | |
4710 | factor); | |
43cacb12 RS |
4711 | gcc_assert (written < sizeof (buffer)); |
4712 | return buffer; | |
4713 | } | |
4714 | ||
4715 | /* Return the asm string for an instruction with a CNT-like vector size | |
4716 | operand (a vector pattern followed by a multiplier in the range [1, 16]). | |
4717 | PREFIX is the mnemonic without the size suffix and OPERANDS is the | |
4718 | first part of the operands template (the part that comes before the | |
4719 | vector size itself). X is the value of the vector size operand, | |
139df05a RS |
4720 | as a polynomial integer rtx; we need to convert this into an "all" |
4721 | pattern with a multiplier. */ | |
43cacb12 RS |
4722 | |
4723 | char * | |
4724 | aarch64_output_sve_cnt_immediate (const char *prefix, const char *operands, | |
4725 | rtx x) | |
4726 | { | |
4727 | poly_int64 value = rtx_to_poly_int64 (x); | |
4728 | gcc_assert (aarch64_sve_cnt_immediate_p (value)); | |
139df05a | 4729 | return aarch64_output_sve_cnt_immediate (prefix, operands, AARCH64_SV_ALL, |
43cacb12 RS |
4730 | value.coeffs[1], 0); |
4731 | } | |
4732 | ||
624d0f07 RS |
4733 | /* Return the asm string for an instruction with a CNT-like vector size |
4734 | operand (a vector pattern followed by a multiplier in the range [1, 16]). | |
4735 | PREFIX is the mnemonic without the size suffix and OPERANDS is the | |
4736 | first part of the operands template (the part that comes before the | |
4737 | vector size itself). CNT_PAT[0..2] are the operands of the | |
4738 | UNSPEC_SVE_CNT_PAT; see aarch64_sve_cnt_pat for details. */ | |
4739 | ||
4740 | char * | |
4741 | aarch64_output_sve_cnt_pat_immediate (const char *prefix, | |
4742 | const char *operands, rtx *cnt_pat) | |
4743 | { | |
4744 | aarch64_svpattern pattern = (aarch64_svpattern) INTVAL (cnt_pat[0]); | |
4745 | unsigned int nelts_per_vq = INTVAL (cnt_pat[1]); | |
4746 | unsigned int factor = INTVAL (cnt_pat[2]) * nelts_per_vq; | |
4747 | return aarch64_output_sve_cnt_immediate (prefix, operands, pattern, | |
4748 | factor, nelts_per_vq); | |
4749 | } | |
4750 | ||
0fdc30bc RS |
4751 | /* Return true if we can add X using a single SVE INC or DEC instruction. */ |
4752 | ||
4753 | bool | |
4754 | aarch64_sve_scalar_inc_dec_immediate_p (rtx x) | |
4755 | { | |
4756 | poly_int64 value; | |
4757 | return (poly_int_rtx_p (x, &value) | |
4758 | && (aarch64_sve_cnt_immediate_p (value) | |
4759 | || aarch64_sve_cnt_immediate_p (-value))); | |
4760 | } | |
4761 | ||
4762 | /* Return the asm string for adding SVE INC/DEC immediate OFFSET to | |
4763 | operand 0. */ | |
4764 | ||
4765 | char * | |
4766 | aarch64_output_sve_scalar_inc_dec (rtx offset) | |
4767 | { | |
4768 | poly_int64 offset_value = rtx_to_poly_int64 (offset); | |
4769 | gcc_assert (offset_value.coeffs[0] == offset_value.coeffs[1]); | |
4770 | if (offset_value.coeffs[1] > 0) | |
139df05a | 4771 | return aarch64_output_sve_cnt_immediate ("inc", "%x0", AARCH64_SV_ALL, |
0fdc30bc RS |
4772 | offset_value.coeffs[1], 0); |
4773 | else | |
139df05a | 4774 | return aarch64_output_sve_cnt_immediate ("dec", "%x0", AARCH64_SV_ALL, |
0fdc30bc RS |
4775 | -offset_value.coeffs[1], 0); |
4776 | } | |
4777 | ||
43cacb12 RS |
4778 | /* Return true if we can add VALUE to a register using a single ADDVL |
4779 | or ADDPL instruction. */ | |
4780 | ||
4781 | static bool | |
4782 | aarch64_sve_addvl_addpl_immediate_p (poly_int64 value) | |
4783 | { | |
4784 | HOST_WIDE_INT factor = value.coeffs[0]; | |
4785 | if (factor == 0 || value.coeffs[1] != factor) | |
4786 | return false; | |
4787 | /* FACTOR counts VG / 2, so a value of 2 is one predicate width | |
4788 | and a value of 16 is one vector width. */ | |
4789 | return (((factor & 15) == 0 && IN_RANGE (factor, -32 * 16, 31 * 16)) | |
4790 | || ((factor & 1) == 0 && IN_RANGE (factor, -32 * 2, 31 * 2))); | |
4791 | } | |
4792 | ||
4793 | /* Likewise for rtx X. */ | |
4794 | ||
4795 | bool | |
4796 | aarch64_sve_addvl_addpl_immediate_p (rtx x) | |
4797 | { | |
4798 | poly_int64 value; | |
4799 | return (poly_int_rtx_p (x, &value) | |
4800 | && aarch64_sve_addvl_addpl_immediate_p (value)); | |
4801 | } | |
4802 | ||
0fdc30bc RS |
4803 | /* Return the asm string for adding ADDVL or ADDPL immediate OFFSET |
4804 | to operand 1 and storing the result in operand 0. */ | |
43cacb12 RS |
4805 | |
4806 | char * | |
0fdc30bc | 4807 | aarch64_output_sve_addvl_addpl (rtx offset) |
43cacb12 RS |
4808 | { |
4809 | static char buffer[sizeof ("addpl\t%x0, %x1, #-") + 3 * sizeof (int)]; | |
4810 | poly_int64 offset_value = rtx_to_poly_int64 (offset); | |
4811 | gcc_assert (aarch64_sve_addvl_addpl_immediate_p (offset_value)); | |
4812 | ||
43cacb12 RS |
4813 | int factor = offset_value.coeffs[1]; |
4814 | if ((factor & 15) == 0) | |
4815 | snprintf (buffer, sizeof (buffer), "addvl\t%%x0, %%x1, #%d", factor / 16); | |
4816 | else | |
4817 | snprintf (buffer, sizeof (buffer), "addpl\t%%x0, %%x1, #%d", factor / 2); | |
4818 | return buffer; | |
4819 | } | |
4820 | ||
4821 | /* Return true if X is a valid immediate for an SVE vector INC or DEC | |
4822 | instruction. If it is, store the number of elements in each vector | |
4823 | quadword in *NELTS_PER_VQ_OUT (if nonnull) and store the multiplication | |
4824 | factor in *FACTOR_OUT (if nonnull). */ | |
4825 | ||
4826 | bool | |
0fdc30bc RS |
4827 | aarch64_sve_vector_inc_dec_immediate_p (rtx x, int *factor_out, |
4828 | unsigned int *nelts_per_vq_out) | |
43cacb12 RS |
4829 | { |
4830 | rtx elt; | |
4831 | poly_int64 value; | |
4832 | ||
4833 | if (!const_vec_duplicate_p (x, &elt) | |
4834 | || !poly_int_rtx_p (elt, &value)) | |
4835 | return false; | |
4836 | ||
4837 | unsigned int nelts_per_vq = 128 / GET_MODE_UNIT_BITSIZE (GET_MODE (x)); | |
4838 | if (nelts_per_vq != 8 && nelts_per_vq != 4 && nelts_per_vq != 2) | |
4839 | /* There's no vector INCB. */ | |
4840 | return false; | |
4841 | ||
4842 | HOST_WIDE_INT factor = value.coeffs[0]; | |
4843 | if (value.coeffs[1] != factor) | |
4844 | return false; | |
4845 | ||
4846 | /* The coefficient must be [1, 16] * NELTS_PER_VQ. */ | |
4847 | if ((factor % nelts_per_vq) != 0 | |
4848 | || !IN_RANGE (abs (factor), nelts_per_vq, 16 * nelts_per_vq)) | |
4849 | return false; | |
4850 | ||
4851 | if (factor_out) | |
4852 | *factor_out = factor; | |
4853 | if (nelts_per_vq_out) | |
4854 | *nelts_per_vq_out = nelts_per_vq; | |
4855 | return true; | |
4856 | } | |
4857 | ||
4858 | /* Return true if X is a valid immediate for an SVE vector INC or DEC | |
4859 | instruction. */ | |
4860 | ||
4861 | bool | |
0fdc30bc | 4862 | aarch64_sve_vector_inc_dec_immediate_p (rtx x) |
43cacb12 | 4863 | { |
0fdc30bc | 4864 | return aarch64_sve_vector_inc_dec_immediate_p (x, NULL, NULL); |
43cacb12 RS |
4865 | } |
4866 | ||
4867 | /* Return the asm template for an SVE vector INC or DEC instruction. | |
4868 | OPERANDS gives the operands before the vector count and X is the | |
4869 | value of the vector count operand itself. */ | |
4870 | ||
4871 | char * | |
0fdc30bc | 4872 | aarch64_output_sve_vector_inc_dec (const char *operands, rtx x) |
43cacb12 RS |
4873 | { |
4874 | int factor; | |
4875 | unsigned int nelts_per_vq; | |
0fdc30bc | 4876 | if (!aarch64_sve_vector_inc_dec_immediate_p (x, &factor, &nelts_per_vq)) |
43cacb12 RS |
4877 | gcc_unreachable (); |
4878 | if (factor < 0) | |
139df05a RS |
4879 | return aarch64_output_sve_cnt_immediate ("dec", operands, AARCH64_SV_ALL, |
4880 | -factor, nelts_per_vq); | |
43cacb12 | 4881 | else |
139df05a RS |
4882 | return aarch64_output_sve_cnt_immediate ("inc", operands, AARCH64_SV_ALL, |
4883 | factor, nelts_per_vq); | |
43cacb12 | 4884 | } |
43e9d192 | 4885 | |
82614948 RR |
4886 | static int |
4887 | aarch64_internal_mov_immediate (rtx dest, rtx imm, bool generate, | |
77e994c9 | 4888 | scalar_int_mode mode) |
43e9d192 | 4889 | { |
43e9d192 | 4890 | int i; |
9a4865db WD |
4891 | unsigned HOST_WIDE_INT val, val2, mask; |
4892 | int one_match, zero_match; | |
4893 | int num_insns; | |
43e9d192 | 4894 | |
9a4865db WD |
4895 | val = INTVAL (imm); |
4896 | ||
4897 | if (aarch64_move_imm (val, mode)) | |
43e9d192 | 4898 | { |
82614948 | 4899 | if (generate) |
f7df4a84 | 4900 | emit_insn (gen_rtx_SET (dest, imm)); |
9a4865db | 4901 | return 1; |
43e9d192 IB |
4902 | } |
4903 | ||
9de00935 TC |
4904 | /* Check to see if the low 32 bits are either 0xffffXXXX or 0xXXXXffff |
4905 | (with XXXX non-zero). In that case check to see if the move can be done in | |
4906 | a smaller mode. */ | |
4907 | val2 = val & 0xffffffff; | |
4908 | if (mode == DImode | |
4909 | && aarch64_move_imm (val2, SImode) | |
4910 | && (((val >> 32) & 0xffff) == 0 || (val >> 48) == 0)) | |
4911 | { | |
4912 | if (generate) | |
4913 | emit_insn (gen_rtx_SET (dest, GEN_INT (val2))); | |
4914 | ||
4915 | /* Check if we have to emit a second instruction by checking to see | |
4916 | if any of the upper 32 bits of the original DI mode value is set. */ | |
4917 | if (val == val2) | |
4918 | return 1; | |
4919 | ||
4920 | i = (val >> 48) ? 48 : 32; | |
4921 | ||
4922 | if (generate) | |
4923 | emit_insn (gen_insv_immdi (dest, GEN_INT (i), | |
4924 | GEN_INT ((val >> i) & 0xffff))); | |
4925 | ||
4926 | return 2; | |
4927 | } | |
4928 | ||
9a4865db | 4929 | if ((val >> 32) == 0 || mode == SImode) |
43e9d192 | 4930 | { |
82614948 RR |
4931 | if (generate) |
4932 | { | |
9a4865db WD |
4933 | emit_insn (gen_rtx_SET (dest, GEN_INT (val & 0xffff))); |
4934 | if (mode == SImode) | |
4935 | emit_insn (gen_insv_immsi (dest, GEN_INT (16), | |
4936 | GEN_INT ((val >> 16) & 0xffff))); | |
4937 | else | |
4938 | emit_insn (gen_insv_immdi (dest, GEN_INT (16), | |
4939 | GEN_INT ((val >> 16) & 0xffff))); | |
82614948 | 4940 | } |
9a4865db | 4941 | return 2; |
43e9d192 IB |
4942 | } |
4943 | ||
4944 | /* Remaining cases are all for DImode. */ | |
4945 | ||
43e9d192 | 4946 | mask = 0xffff; |
9a4865db WD |
4947 | zero_match = ((val & mask) == 0) + ((val & (mask << 16)) == 0) + |
4948 | ((val & (mask << 32)) == 0) + ((val & (mask << 48)) == 0); | |
4949 | one_match = ((~val & mask) == 0) + ((~val & (mask << 16)) == 0) + | |
4950 | ((~val & (mask << 32)) == 0) + ((~val & (mask << 48)) == 0); | |
43e9d192 | 4951 | |
62c8d76c | 4952 | if (zero_match != 2 && one_match != 2) |
43e9d192 | 4953 | { |
62c8d76c WD |
4954 | /* Try emitting a bitmask immediate with a movk replacing 16 bits. |
4955 | For a 64-bit bitmask try whether changing 16 bits to all ones or | |
4956 | zeroes creates a valid bitmask. To check any repeated bitmask, | |
4957 | try using 16 bits from the other 32-bit half of val. */ | |
43e9d192 | 4958 | |
62c8d76c | 4959 | for (i = 0; i < 64; i += 16, mask <<= 16) |
43e9d192 | 4960 | { |
62c8d76c WD |
4961 | val2 = val & ~mask; |
4962 | if (val2 != val && aarch64_bitmask_imm (val2, mode)) | |
4963 | break; | |
4964 | val2 = val | mask; | |
4965 | if (val2 != val && aarch64_bitmask_imm (val2, mode)) | |
4966 | break; | |
4967 | val2 = val2 & ~mask; | |
4968 | val2 = val2 | (((val2 >> 32) | (val2 << 32)) & mask); | |
4969 | if (val2 != val && aarch64_bitmask_imm (val2, mode)) | |
4970 | break; | |
43e9d192 | 4971 | } |
62c8d76c | 4972 | if (i != 64) |
43e9d192 | 4973 | { |
62c8d76c | 4974 | if (generate) |
43e9d192 | 4975 | { |
62c8d76c WD |
4976 | emit_insn (gen_rtx_SET (dest, GEN_INT (val2))); |
4977 | emit_insn (gen_insv_immdi (dest, GEN_INT (i), | |
9a4865db | 4978 | GEN_INT ((val >> i) & 0xffff))); |
43e9d192 | 4979 | } |
1312b1ba | 4980 | return 2; |
43e9d192 IB |
4981 | } |
4982 | } | |
4983 | ||
9a4865db WD |
4984 | /* Generate 2-4 instructions, skipping 16 bits of all zeroes or ones which |
4985 | are emitted by the initial mov. If one_match > zero_match, skip set bits, | |
4986 | otherwise skip zero bits. */ | |
2c274197 | 4987 | |
9a4865db | 4988 | num_insns = 1; |
43e9d192 | 4989 | mask = 0xffff; |
9a4865db WD |
4990 | val2 = one_match > zero_match ? ~val : val; |
4991 | i = (val2 & mask) != 0 ? 0 : (val2 & (mask << 16)) != 0 ? 16 : 32; | |
4992 | ||
4993 | if (generate) | |
4994 | emit_insn (gen_rtx_SET (dest, GEN_INT (one_match > zero_match | |
4995 | ? (val | ~(mask << i)) | |
4996 | : (val & (mask << i))))); | |
4997 | for (i += 16; i < 64; i += 16) | |
43e9d192 | 4998 | { |
9a4865db WD |
4999 | if ((val2 & (mask << i)) == 0) |
5000 | continue; | |
5001 | if (generate) | |
5002 | emit_insn (gen_insv_immdi (dest, GEN_INT (i), | |
5003 | GEN_INT ((val >> i) & 0xffff))); | |
5004 | num_insns ++; | |
82614948 RR |
5005 | } |
5006 | ||
5007 | return num_insns; | |
5008 | } | |
5009 | ||
c0bb5bc5 WD |
5010 | /* Return whether imm is a 128-bit immediate which is simple enough to |
5011 | expand inline. */ | |
5012 | bool | |
5013 | aarch64_mov128_immediate (rtx imm) | |
5014 | { | |
3793ecc1 | 5015 | if (CONST_INT_P (imm)) |
c0bb5bc5 WD |
5016 | return true; |
5017 | ||
5018 | gcc_assert (CONST_WIDE_INT_NUNITS (imm) == 2); | |
5019 | ||
5020 | rtx lo = GEN_INT (CONST_WIDE_INT_ELT (imm, 0)); | |
5021 | rtx hi = GEN_INT (CONST_WIDE_INT_ELT (imm, 1)); | |
5022 | ||
5023 | return aarch64_internal_mov_immediate (NULL_RTX, lo, false, DImode) | |
5024 | + aarch64_internal_mov_immediate (NULL_RTX, hi, false, DImode) <= 4; | |
5025 | } | |
5026 | ||
5027 | ||
43cacb12 RS |
5028 | /* Return the number of temporary registers that aarch64_add_offset_1 |
5029 | would need to add OFFSET to a register. */ | |
5030 | ||
5031 | static unsigned int | |
5032 | aarch64_add_offset_1_temporaries (HOST_WIDE_INT offset) | |
5033 | { | |
1bb3e2c0 | 5034 | return absu_hwi (offset) < 0x1000000 ? 0 : 1; |
43cacb12 RS |
5035 | } |
5036 | ||
f5470a77 RS |
5037 | /* A subroutine of aarch64_add_offset. Set DEST to SRC + OFFSET for |
5038 | a non-polynomial OFFSET. MODE is the mode of the addition. | |
5039 | FRAME_RELATED_P is true if the RTX_FRAME_RELATED flag should | |
5040 | be set and CFA adjustments added to the generated instructions. | |
5041 | ||
5042 | TEMP1, if nonnull, is a register of mode MODE that can be used as a | |
5043 | temporary if register allocation is already complete. This temporary | |
5044 | register may overlap DEST but must not overlap SRC. If TEMP1 is known | |
5045 | to hold abs (OFFSET), EMIT_MOVE_IMM can be set to false to avoid emitting | |
5046 | the immediate again. | |
0100c5f9 RS |
5047 | |
5048 | Since this function may be used to adjust the stack pointer, we must | |
5049 | ensure that it cannot cause transient stack deallocation (for example | |
5050 | by first incrementing SP and then decrementing when adjusting by a | |
5051 | large immediate). */ | |
5052 | ||
5053 | static void | |
f5470a77 RS |
5054 | aarch64_add_offset_1 (scalar_int_mode mode, rtx dest, |
5055 | rtx src, HOST_WIDE_INT offset, rtx temp1, | |
5056 | bool frame_related_p, bool emit_move_imm) | |
0100c5f9 | 5057 | { |
f5470a77 RS |
5058 | gcc_assert (emit_move_imm || temp1 != NULL_RTX); |
5059 | gcc_assert (temp1 == NULL_RTX || !reg_overlap_mentioned_p (temp1, src)); | |
5060 | ||
42bc589e | 5061 | unsigned HOST_WIDE_INT moffset = absu_hwi (offset); |
0100c5f9 RS |
5062 | rtx_insn *insn; |
5063 | ||
f5470a77 RS |
5064 | if (!moffset) |
5065 | { | |
5066 | if (!rtx_equal_p (dest, src)) | |
5067 | { | |
5068 | insn = emit_insn (gen_rtx_SET (dest, src)); | |
5069 | RTX_FRAME_RELATED_P (insn) = frame_related_p; | |
5070 | } | |
5071 | return; | |
5072 | } | |
0100c5f9 RS |
5073 | |
5074 | /* Single instruction adjustment. */ | |
f5470a77 | 5075 | if (aarch64_uimm12_shift (moffset)) |
0100c5f9 | 5076 | { |
f5470a77 | 5077 | insn = emit_insn (gen_add3_insn (dest, src, GEN_INT (offset))); |
0100c5f9 RS |
5078 | RTX_FRAME_RELATED_P (insn) = frame_related_p; |
5079 | return; | |
5080 | } | |
5081 | ||
f5470a77 RS |
5082 | /* Emit 2 additions/subtractions if the adjustment is less than 24 bits |
5083 | and either: | |
5084 | ||
5085 | a) the offset cannot be loaded by a 16-bit move or | |
5086 | b) there is no spare register into which we can move it. */ | |
5087 | if (moffset < 0x1000000 | |
5088 | && ((!temp1 && !can_create_pseudo_p ()) | |
5089 | || !aarch64_move_imm (moffset, mode))) | |
0100c5f9 | 5090 | { |
f5470a77 | 5091 | HOST_WIDE_INT low_off = moffset & 0xfff; |
0100c5f9 | 5092 | |
f5470a77 RS |
5093 | low_off = offset < 0 ? -low_off : low_off; |
5094 | insn = emit_insn (gen_add3_insn (dest, src, GEN_INT (low_off))); | |
0100c5f9 | 5095 | RTX_FRAME_RELATED_P (insn) = frame_related_p; |
f5470a77 | 5096 | insn = emit_insn (gen_add2_insn (dest, GEN_INT (offset - low_off))); |
0100c5f9 RS |
5097 | RTX_FRAME_RELATED_P (insn) = frame_related_p; |
5098 | return; | |
5099 | } | |
5100 | ||
5101 | /* Emit a move immediate if required and an addition/subtraction. */ | |
0100c5f9 | 5102 | if (emit_move_imm) |
f5470a77 RS |
5103 | { |
5104 | gcc_assert (temp1 != NULL_RTX || can_create_pseudo_p ()); | |
7aa605c9 JJ |
5105 | temp1 = aarch64_force_temporary (mode, temp1, |
5106 | gen_int_mode (moffset, mode)); | |
f5470a77 RS |
5107 | } |
5108 | insn = emit_insn (offset < 0 | |
5109 | ? gen_sub3_insn (dest, src, temp1) | |
5110 | : gen_add3_insn (dest, src, temp1)); | |
0100c5f9 RS |
5111 | if (frame_related_p) |
5112 | { | |
5113 | RTX_FRAME_RELATED_P (insn) = frame_related_p; | |
f5470a77 RS |
5114 | rtx adj = plus_constant (mode, src, offset); |
5115 | add_reg_note (insn, REG_CFA_ADJUST_CFA, gen_rtx_SET (dest, adj)); | |
0100c5f9 RS |
5116 | } |
5117 | } | |
5118 | ||
43cacb12 RS |
5119 | /* Return the number of temporary registers that aarch64_add_offset |
5120 | would need to move OFFSET into a register or add OFFSET to a register; | |
5121 | ADD_P is true if we want the latter rather than the former. */ | |
5122 | ||
5123 | static unsigned int | |
5124 | aarch64_offset_temporaries (bool add_p, poly_int64 offset) | |
5125 | { | |
5126 | /* This follows the same structure as aarch64_add_offset. */ | |
5127 | if (add_p && aarch64_sve_addvl_addpl_immediate_p (offset)) | |
5128 | return 0; | |
5129 | ||
5130 | unsigned int count = 0; | |
5131 | HOST_WIDE_INT factor = offset.coeffs[1]; | |
5132 | HOST_WIDE_INT constant = offset.coeffs[0] - factor; | |
5133 | poly_int64 poly_offset (factor, factor); | |
5134 | if (add_p && aarch64_sve_addvl_addpl_immediate_p (poly_offset)) | |
5135 | /* Need one register for the ADDVL/ADDPL result. */ | |
5136 | count += 1; | |
5137 | else if (factor != 0) | |
5138 | { | |
5139 | factor = abs (factor); | |
5140 | if (factor > 16 * (factor & -factor)) | |
5141 | /* Need one register for the CNT result and one for the multiplication | |
5142 | factor. If necessary, the second temporary can be reused for the | |
5143 | constant part of the offset. */ | |
5144 | return 2; | |
5145 | /* Need one register for the CNT result (which might then | |
5146 | be shifted). */ | |
5147 | count += 1; | |
5148 | } | |
5149 | return count + aarch64_add_offset_1_temporaries (constant); | |
5150 | } | |
5151 | ||
5152 | /* If X can be represented as a poly_int64, return the number | |
5153 | of temporaries that are required to add it to a register. | |
5154 | Return -1 otherwise. */ | |
5155 | ||
5156 | int | |
5157 | aarch64_add_offset_temporaries (rtx x) | |
5158 | { | |
5159 | poly_int64 offset; | |
5160 | if (!poly_int_rtx_p (x, &offset)) | |
5161 | return -1; | |
5162 | return aarch64_offset_temporaries (true, offset); | |
5163 | } | |
5164 | ||
f5470a77 RS |
5165 | /* Set DEST to SRC + OFFSET. MODE is the mode of the addition. |
5166 | FRAME_RELATED_P is true if the RTX_FRAME_RELATED flag should | |
5167 | be set and CFA adjustments added to the generated instructions. | |
5168 | ||
5169 | TEMP1, if nonnull, is a register of mode MODE that can be used as a | |
5170 | temporary if register allocation is already complete. This temporary | |
43cacb12 RS |
5171 | register may overlap DEST if !FRAME_RELATED_P but must not overlap SRC. |
5172 | If TEMP1 is known to hold abs (OFFSET), EMIT_MOVE_IMM can be set to | |
5173 | false to avoid emitting the immediate again. | |
5174 | ||
5175 | TEMP2, if nonnull, is a second temporary register that doesn't | |
5176 | overlap either DEST or REG. | |
f5470a77 RS |
5177 | |
5178 | Since this function may be used to adjust the stack pointer, we must | |
5179 | ensure that it cannot cause transient stack deallocation (for example | |
5180 | by first incrementing SP and then decrementing when adjusting by a | |
5181 | large immediate). */ | |
5182 | ||
5183 | static void | |
5184 | aarch64_add_offset (scalar_int_mode mode, rtx dest, rtx src, | |
43cacb12 RS |
5185 | poly_int64 offset, rtx temp1, rtx temp2, |
5186 | bool frame_related_p, bool emit_move_imm = true) | |
0100c5f9 | 5187 | { |
f5470a77 RS |
5188 | gcc_assert (emit_move_imm || temp1 != NULL_RTX); |
5189 | gcc_assert (temp1 == NULL_RTX || !reg_overlap_mentioned_p (temp1, src)); | |
43cacb12 RS |
5190 | gcc_assert (temp1 == NULL_RTX |
5191 | || !frame_related_p | |
5192 | || !reg_overlap_mentioned_p (temp1, dest)); | |
5193 | gcc_assert (temp2 == NULL_RTX || !reg_overlap_mentioned_p (dest, temp2)); | |
5194 | ||
5195 | /* Try using ADDVL or ADDPL to add the whole value. */ | |
5196 | if (src != const0_rtx && aarch64_sve_addvl_addpl_immediate_p (offset)) | |
5197 | { | |
5198 | rtx offset_rtx = gen_int_mode (offset, mode); | |
5199 | rtx_insn *insn = emit_insn (gen_add3_insn (dest, src, offset_rtx)); | |
5200 | RTX_FRAME_RELATED_P (insn) = frame_related_p; | |
5201 | return; | |
5202 | } | |
5203 | ||
5204 | /* Coefficient 1 is multiplied by the number of 128-bit blocks in an | |
5205 | SVE vector register, over and above the minimum size of 128 bits. | |
5206 | This is equivalent to half the value returned by CNTD with a | |
5207 | vector shape of ALL. */ | |
5208 | HOST_WIDE_INT factor = offset.coeffs[1]; | |
5209 | HOST_WIDE_INT constant = offset.coeffs[0] - factor; | |
5210 | ||
5211 | /* Try using ADDVL or ADDPL to add the VG-based part. */ | |
5212 | poly_int64 poly_offset (factor, factor); | |
5213 | if (src != const0_rtx | |
5214 | && aarch64_sve_addvl_addpl_immediate_p (poly_offset)) | |
5215 | { | |
5216 | rtx offset_rtx = gen_int_mode (poly_offset, mode); | |
5217 | if (frame_related_p) | |
5218 | { | |
5219 | rtx_insn *insn = emit_insn (gen_add3_insn (dest, src, offset_rtx)); | |
5220 | RTX_FRAME_RELATED_P (insn) = true; | |
5221 | src = dest; | |
5222 | } | |
5223 | else | |
5224 | { | |
5225 | rtx addr = gen_rtx_PLUS (mode, src, offset_rtx); | |
5226 | src = aarch64_force_temporary (mode, temp1, addr); | |
5227 | temp1 = temp2; | |
5228 | temp2 = NULL_RTX; | |
5229 | } | |
5230 | } | |
5231 | /* Otherwise use a CNT-based sequence. */ | |
5232 | else if (factor != 0) | |
5233 | { | |
5234 | /* Use a subtraction if we have a negative factor. */ | |
5235 | rtx_code code = PLUS; | |
5236 | if (factor < 0) | |
5237 | { | |
5238 | factor = -factor; | |
5239 | code = MINUS; | |
5240 | } | |
5241 | ||
5242 | /* Calculate CNTD * FACTOR / 2. First try to fold the division | |
5243 | into the multiplication. */ | |
5244 | rtx val; | |
5245 | int shift = 0; | |
5246 | if (factor & 1) | |
5247 | /* Use a right shift by 1. */ | |
5248 | shift = -1; | |
5249 | else | |
5250 | factor /= 2; | |
5251 | HOST_WIDE_INT low_bit = factor & -factor; | |
5252 | if (factor <= 16 * low_bit) | |
5253 | { | |
5254 | if (factor > 16 * 8) | |
5255 | { | |
5256 | /* "CNTB Xn, ALL, MUL #FACTOR" is out of range, so calculate | |
5257 | the value with the minimum multiplier and shift it into | |
5258 | position. */ | |
5259 | int extra_shift = exact_log2 (low_bit); | |
5260 | shift += extra_shift; | |
5261 | factor >>= extra_shift; | |
5262 | } | |
5263 | val = gen_int_mode (poly_int64 (factor * 2, factor * 2), mode); | |
5264 | } | |
5265 | else | |
5266 | { | |
7d8bdfa7 RS |
5267 | /* Base the factor on LOW_BIT if we can calculate LOW_BIT |
5268 | directly, since that should increase the chances of being | |
5269 | able to use a shift and add sequence. If LOW_BIT itself | |
5270 | is out of range, just use CNTD. */ | |
5271 | if (low_bit <= 16 * 8) | |
5272 | factor /= low_bit; | |
5273 | else | |
5274 | low_bit = 1; | |
5275 | ||
5276 | val = gen_int_mode (poly_int64 (low_bit * 2, low_bit * 2), mode); | |
43cacb12 RS |
5277 | val = aarch64_force_temporary (mode, temp1, val); |
5278 | ||
7d8bdfa7 RS |
5279 | if (can_create_pseudo_p ()) |
5280 | { | |
5281 | rtx coeff1 = gen_int_mode (factor, mode); | |
d7cea7ce | 5282 | val = expand_mult (mode, val, coeff1, NULL_RTX, true, true); |
7d8bdfa7 RS |
5283 | } |
5284 | else | |
43cacb12 | 5285 | { |
7d8bdfa7 RS |
5286 | /* Go back to using a negative multiplication factor if we have |
5287 | no register from which to subtract. */ | |
5288 | if (code == MINUS && src == const0_rtx) | |
5289 | { | |
5290 | factor = -factor; | |
5291 | code = PLUS; | |
5292 | } | |
5293 | rtx coeff1 = gen_int_mode (factor, mode); | |
5294 | coeff1 = aarch64_force_temporary (mode, temp2, coeff1); | |
5295 | val = gen_rtx_MULT (mode, val, coeff1); | |
43cacb12 | 5296 | } |
43cacb12 RS |
5297 | } |
5298 | ||
5299 | if (shift > 0) | |
5300 | { | |
5301 | /* Multiply by 1 << SHIFT. */ | |
5302 | val = aarch64_force_temporary (mode, temp1, val); | |
5303 | val = gen_rtx_ASHIFT (mode, val, GEN_INT (shift)); | |
5304 | } | |
5305 | else if (shift == -1) | |
5306 | { | |
5307 | /* Divide by 2. */ | |
5308 | val = aarch64_force_temporary (mode, temp1, val); | |
5309 | val = gen_rtx_ASHIFTRT (mode, val, const1_rtx); | |
5310 | } | |
5311 | ||
5312 | /* Calculate SRC +/- CNTD * FACTOR / 2. */ | |
5313 | if (src != const0_rtx) | |
5314 | { | |
5315 | val = aarch64_force_temporary (mode, temp1, val); | |
5316 | val = gen_rtx_fmt_ee (code, mode, src, val); | |
5317 | } | |
5318 | else if (code == MINUS) | |
5319 | { | |
5320 | val = aarch64_force_temporary (mode, temp1, val); | |
5321 | val = gen_rtx_NEG (mode, val); | |
5322 | } | |
5323 | ||
5324 | if (constant == 0 || frame_related_p) | |
5325 | { | |
5326 | rtx_insn *insn = emit_insn (gen_rtx_SET (dest, val)); | |
5327 | if (frame_related_p) | |
5328 | { | |
5329 | RTX_FRAME_RELATED_P (insn) = true; | |
5330 | add_reg_note (insn, REG_CFA_ADJUST_CFA, | |
5331 | gen_rtx_SET (dest, plus_constant (Pmode, src, | |
5332 | poly_offset))); | |
5333 | } | |
5334 | src = dest; | |
5335 | if (constant == 0) | |
5336 | return; | |
5337 | } | |
5338 | else | |
5339 | { | |
5340 | src = aarch64_force_temporary (mode, temp1, val); | |
5341 | temp1 = temp2; | |
5342 | temp2 = NULL_RTX; | |
5343 | } | |
5344 | ||
5345 | emit_move_imm = true; | |
5346 | } | |
f5470a77 | 5347 | |
f5470a77 RS |
5348 | aarch64_add_offset_1 (mode, dest, src, constant, temp1, |
5349 | frame_related_p, emit_move_imm); | |
0100c5f9 RS |
5350 | } |
5351 | ||
43cacb12 RS |
5352 | /* Like aarch64_add_offset, but the offset is given as an rtx rather |
5353 | than a poly_int64. */ | |
5354 | ||
5355 | void | |
5356 | aarch64_split_add_offset (scalar_int_mode mode, rtx dest, rtx src, | |
5357 | rtx offset_rtx, rtx temp1, rtx temp2) | |
5358 | { | |
5359 | aarch64_add_offset (mode, dest, src, rtx_to_poly_int64 (offset_rtx), | |
5360 | temp1, temp2, false); | |
5361 | } | |
5362 | ||
f5470a77 RS |
5363 | /* Add DELTA to the stack pointer, marking the instructions frame-related. |
5364 | TEMP1 is available as a temporary if nonnull. EMIT_MOVE_IMM is false | |
5365 | if TEMP1 already contains abs (DELTA). */ | |
5366 | ||
0100c5f9 | 5367 | static inline void |
43cacb12 | 5368 | aarch64_add_sp (rtx temp1, rtx temp2, poly_int64 delta, bool emit_move_imm) |
0100c5f9 | 5369 | { |
f5470a77 | 5370 | aarch64_add_offset (Pmode, stack_pointer_rtx, stack_pointer_rtx, delta, |
43cacb12 | 5371 | temp1, temp2, true, emit_move_imm); |
0100c5f9 RS |
5372 | } |
5373 | ||
f5470a77 RS |
5374 | /* Subtract DELTA from the stack pointer, marking the instructions |
5375 | frame-related if FRAME_RELATED_P. TEMP1 is available as a temporary | |
5376 | if nonnull. */ | |
5377 | ||
0100c5f9 | 5378 | static inline void |
cd1bef27 JL |
5379 | aarch64_sub_sp (rtx temp1, rtx temp2, poly_int64 delta, bool frame_related_p, |
5380 | bool emit_move_imm = true) | |
0100c5f9 | 5381 | { |
f5470a77 | 5382 | aarch64_add_offset (Pmode, stack_pointer_rtx, stack_pointer_rtx, -delta, |
cd1bef27 | 5383 | temp1, temp2, frame_related_p, emit_move_imm); |
0100c5f9 | 5384 | } |
82614948 | 5385 | |
43cacb12 RS |
5386 | /* Set DEST to (vec_series BASE STEP). */ |
5387 | ||
5388 | static void | |
5389 | aarch64_expand_vec_series (rtx dest, rtx base, rtx step) | |
82614948 RR |
5390 | { |
5391 | machine_mode mode = GET_MODE (dest); | |
43cacb12 RS |
5392 | scalar_mode inner = GET_MODE_INNER (mode); |
5393 | ||
5394 | /* Each operand can be a register or an immediate in the range [-16, 15]. */ | |
5395 | if (!aarch64_sve_index_immediate_p (base)) | |
5396 | base = force_reg (inner, base); | |
5397 | if (!aarch64_sve_index_immediate_p (step)) | |
5398 | step = force_reg (inner, step); | |
5399 | ||
5400 | emit_set_insn (dest, gen_rtx_VEC_SERIES (mode, base, step)); | |
5401 | } | |
82614948 | 5402 | |
4aeb1ba7 RS |
5403 | /* Duplicate 128-bit Advanced SIMD vector SRC so that it fills an SVE |
5404 | register of mode MODE. Use TARGET for the result if it's nonnull | |
5405 | and convenient. | |
5406 | ||
5407 | The two vector modes must have the same element mode. The behavior | |
5408 | is to duplicate architectural lane N of SRC into architectural lanes | |
5409 | N + I * STEP of the result. On big-endian targets, architectural | |
5410 | lane 0 of an Advanced SIMD vector is the last element of the vector | |
5411 | in memory layout, so for big-endian targets this operation has the | |
5412 | effect of reversing SRC before duplicating it. Callers need to | |
5413 | account for this. */ | |
43cacb12 | 5414 | |
4aeb1ba7 RS |
5415 | rtx |
5416 | aarch64_expand_sve_dupq (rtx target, machine_mode mode, rtx src) | |
5417 | { | |
5418 | machine_mode src_mode = GET_MODE (src); | |
5419 | gcc_assert (GET_MODE_INNER (mode) == GET_MODE_INNER (src_mode)); | |
5420 | insn_code icode = (BYTES_BIG_ENDIAN | |
5421 | ? code_for_aarch64_vec_duplicate_vq_be (mode) | |
5422 | : code_for_aarch64_vec_duplicate_vq_le (mode)); | |
5423 | ||
5424 | unsigned int i = 0; | |
5425 | expand_operand ops[3]; | |
5426 | create_output_operand (&ops[i++], target, mode); | |
5427 | create_output_operand (&ops[i++], src, src_mode); | |
5428 | if (BYTES_BIG_ENDIAN) | |
5429 | { | |
5430 | /* Create a PARALLEL describing the reversal of SRC. */ | |
5431 | unsigned int nelts_per_vq = 128 / GET_MODE_UNIT_BITSIZE (mode); | |
5432 | rtx sel = aarch64_gen_stepped_int_parallel (nelts_per_vq, | |
5433 | nelts_per_vq - 1, -1); | |
5434 | create_fixed_operand (&ops[i++], sel); | |
43cacb12 | 5435 | } |
4aeb1ba7 RS |
5436 | expand_insn (icode, i, ops); |
5437 | return ops[0].value; | |
5438 | } | |
5439 | ||
5440 | /* Try to force 128-bit vector value SRC into memory and use LD1RQ to fetch | |
5441 | the memory image into DEST. Return true on success. */ | |
43cacb12 | 5442 | |
4aeb1ba7 RS |
5443 | static bool |
5444 | aarch64_expand_sve_ld1rq (rtx dest, rtx src) | |
5445 | { | |
5446 | src = force_const_mem (GET_MODE (src), src); | |
43cacb12 RS |
5447 | if (!src) |
5448 | return false; | |
5449 | ||
5450 | /* Make sure that the address is legitimate. */ | |
4aeb1ba7 | 5451 | if (!aarch64_sve_ld1rq_operand_p (src)) |
43cacb12 RS |
5452 | { |
5453 | rtx addr = force_reg (Pmode, XEXP (src, 0)); | |
5454 | src = replace_equiv_address (src, addr); | |
5455 | } | |
5456 | ||
947b1372 | 5457 | machine_mode mode = GET_MODE (dest); |
cc68f7c2 | 5458 | machine_mode pred_mode = aarch64_sve_pred_mode (mode); |
16de3637 | 5459 | rtx ptrue = aarch64_ptrue_reg (pred_mode); |
4aeb1ba7 | 5460 | emit_insn (gen_aarch64_sve_ld1rq (mode, dest, src, ptrue)); |
43cacb12 RS |
5461 | return true; |
5462 | } | |
5463 | ||
a065e0bb RS |
5464 | /* SRC is an SVE CONST_VECTOR that contains N "foreground" values followed |
5465 | by N "background" values. Try to move it into TARGET using: | |
5466 | ||
5467 | PTRUE PRED.<T>, VL<N> | |
5468 | MOV TRUE.<T>, #<foreground> | |
5469 | MOV FALSE.<T>, #<background> | |
5470 | SEL TARGET.<T>, PRED.<T>, TRUE.<T>, FALSE.<T> | |
5471 | ||
5472 | The PTRUE is always a single instruction but the MOVs might need a | |
5473 | longer sequence. If the background value is zero (as it often is), | |
5474 | the sequence can sometimes collapse to a PTRUE followed by a | |
5475 | zero-predicated move. | |
5476 | ||
5477 | Return the target on success, otherwise return null. */ | |
5478 | ||
5479 | static rtx | |
5480 | aarch64_expand_sve_const_vector_sel (rtx target, rtx src) | |
5481 | { | |
5482 | gcc_assert (CONST_VECTOR_NELTS_PER_PATTERN (src) == 2); | |
5483 | ||
5484 | /* Make sure that the PTRUE is valid. */ | |
5485 | machine_mode mode = GET_MODE (src); | |
5486 | machine_mode pred_mode = aarch64_sve_pred_mode (mode); | |
5487 | unsigned int npatterns = CONST_VECTOR_NPATTERNS (src); | |
5488 | if (aarch64_svpattern_for_vl (pred_mode, npatterns) | |
5489 | == AARCH64_NUM_SVPATTERNS) | |
5490 | return NULL_RTX; | |
5491 | ||
5492 | rtx_vector_builder pred_builder (pred_mode, npatterns, 2); | |
5493 | rtx_vector_builder true_builder (mode, npatterns, 1); | |
5494 | rtx_vector_builder false_builder (mode, npatterns, 1); | |
5495 | for (unsigned int i = 0; i < npatterns; ++i) | |
5496 | { | |
5497 | true_builder.quick_push (CONST_VECTOR_ENCODED_ELT (src, i)); | |
5498 | pred_builder.quick_push (CONST1_RTX (BImode)); | |
5499 | } | |
5500 | for (unsigned int i = 0; i < npatterns; ++i) | |
5501 | { | |
5502 | false_builder.quick_push (CONST_VECTOR_ENCODED_ELT (src, i + npatterns)); | |
5503 | pred_builder.quick_push (CONST0_RTX (BImode)); | |
5504 | } | |
5505 | expand_operand ops[4]; | |
5506 | create_output_operand (&ops[0], target, mode); | |
5507 | create_input_operand (&ops[1], true_builder.build (), mode); | |
5508 | create_input_operand (&ops[2], false_builder.build (), mode); | |
5509 | create_input_operand (&ops[3], pred_builder.build (), pred_mode); | |
5510 | expand_insn (code_for_vcond_mask (mode, mode), 4, ops); | |
5511 | return target; | |
5512 | } | |
5513 | ||
4aeb1ba7 RS |
5514 | /* Return a register containing CONST_VECTOR SRC, given that SRC has an |
5515 | SVE data mode and isn't a legitimate constant. Use TARGET for the | |
5516 | result if convenient. | |
43cacb12 | 5517 | |
4aeb1ba7 RS |
5518 | The returned register can have whatever mode seems most natural |
5519 | given the contents of SRC. */ | |
5520 | ||
5521 | static rtx | |
5522 | aarch64_expand_sve_const_vector (rtx target, rtx src) | |
43cacb12 RS |
5523 | { |
5524 | machine_mode mode = GET_MODE (src); | |
5525 | unsigned int npatterns = CONST_VECTOR_NPATTERNS (src); | |
5526 | unsigned int nelts_per_pattern = CONST_VECTOR_NELTS_PER_PATTERN (src); | |
4aeb1ba7 RS |
5527 | scalar_mode elt_mode = GET_MODE_INNER (mode); |
5528 | unsigned int elt_bits = GET_MODE_BITSIZE (elt_mode); | |
cc68f7c2 RS |
5529 | unsigned int container_bits = aarch64_sve_container_bits (mode); |
5530 | unsigned int encoded_bits = npatterns * nelts_per_pattern * container_bits; | |
5531 | ||
5532 | if (nelts_per_pattern == 1 | |
5533 | && encoded_bits <= 128 | |
5534 | && container_bits != elt_bits) | |
5535 | { | |
5536 | /* We have a partial vector mode and a constant whose full-vector | |
5537 | equivalent would occupy a repeating 128-bit sequence. Build that | |
5538 | full-vector equivalent instead, so that we have the option of | |
5539 | using LD1RQ and Advanced SIMD operations. */ | |
5540 | unsigned int repeat = container_bits / elt_bits; | |
5541 | machine_mode full_mode = aarch64_full_sve_mode (elt_mode).require (); | |
5542 | rtx_vector_builder builder (full_mode, npatterns * repeat, 1); | |
5543 | for (unsigned int i = 0; i < npatterns; ++i) | |
5544 | for (unsigned int j = 0; j < repeat; ++j) | |
5545 | builder.quick_push (CONST_VECTOR_ENCODED_ELT (src, i)); | |
5546 | target = aarch64_target_reg (target, full_mode); | |
5547 | return aarch64_expand_sve_const_vector (target, builder.build ()); | |
5548 | } | |
4aeb1ba7 RS |
5549 | |
5550 | if (nelts_per_pattern == 1 && encoded_bits == 128) | |
5551 | { | |
5552 | /* The constant is a duplicated quadword but can't be narrowed | |
5553 | beyond a quadword. Get the memory image of the first quadword | |
5554 | as a 128-bit vector and try using LD1RQ to load it from memory. | |
5555 | ||
5556 | The effect for both endiannesses is to load memory lane N into | |
5557 | architectural lanes N + I * STEP of the result. On big-endian | |
5558 | targets, the layout of the 128-bit vector in an Advanced SIMD | |
5559 | register would be different from its layout in an SVE register, | |
5560 | but this 128-bit vector is a memory value only. */ | |
5561 | machine_mode vq_mode = aarch64_vq_mode (elt_mode).require (); | |
5562 | rtx vq_value = simplify_gen_subreg (vq_mode, src, mode, 0); | |
5563 | if (vq_value && aarch64_expand_sve_ld1rq (target, vq_value)) | |
5564 | return target; | |
5565 | } | |
5566 | ||
5567 | if (nelts_per_pattern == 1 && encoded_bits < 128) | |
5568 | { | |
5569 | /* The vector is a repeating sequence of 64 bits or fewer. | |
5570 | See if we can load them using an Advanced SIMD move and then | |
5571 | duplicate it to fill a vector. This is better than using a GPR | |
5572 | move because it keeps everything in the same register file. */ | |
5573 | machine_mode vq_mode = aarch64_vq_mode (elt_mode).require (); | |
5574 | rtx_vector_builder builder (vq_mode, npatterns, 1); | |
5575 | for (unsigned int i = 0; i < npatterns; ++i) | |
5576 | { | |
5577 | /* We want memory lane N to go into architectural lane N, | |
5578 | so reverse for big-endian targets. The DUP .Q pattern | |
5579 | has a compensating reverse built-in. */ | |
5580 | unsigned int srci = BYTES_BIG_ENDIAN ? npatterns - i - 1 : i; | |
5581 | builder.quick_push (CONST_VECTOR_ENCODED_ELT (src, srci)); | |
5582 | } | |
5583 | rtx vq_src = builder.build (); | |
5584 | if (aarch64_simd_valid_immediate (vq_src, NULL)) | |
5585 | { | |
5586 | vq_src = force_reg (vq_mode, vq_src); | |
5587 | return aarch64_expand_sve_dupq (target, mode, vq_src); | |
5588 | } | |
5589 | ||
5590 | /* Get an integer representation of the repeating part of Advanced | |
5591 | SIMD vector VQ_SRC. This preserves the endianness of VQ_SRC, | |
5592 | which for big-endian targets is lane-swapped wrt a normal | |
5593 | Advanced SIMD vector. This means that for both endiannesses, | |
5594 | memory lane N of SVE vector SRC corresponds to architectural | |
5595 | lane N of a register holding VQ_SRC. This in turn means that | |
5596 | memory lane 0 of SVE vector SRC is in the lsb of VQ_SRC (viewed | |
5597 | as a single 128-bit value) and thus that memory lane 0 of SRC is | |
5598 | in the lsb of the integer. Duplicating the integer therefore | |
5599 | ensures that memory lane N of SRC goes into architectural lane | |
5600 | N + I * INDEX of the SVE register. */ | |
5601 | scalar_mode int_mode = int_mode_for_size (encoded_bits, 0).require (); | |
5602 | rtx elt_value = simplify_gen_subreg (int_mode, vq_src, vq_mode, 0); | |
5603 | if (elt_value) | |
5604 | { | |
5605 | /* Pretend that we had a vector of INT_MODE to start with. */ | |
5606 | elt_mode = int_mode; | |
5607 | mode = aarch64_full_sve_mode (int_mode).require (); | |
5608 | ||
5609 | /* If the integer can be moved into a general register by a | |
5610 | single instruction, do that and duplicate the result. */ | |
5611 | if (CONST_INT_P (elt_value) | |
5612 | && aarch64_move_imm (INTVAL (elt_value), elt_mode)) | |
5613 | { | |
5614 | elt_value = force_reg (elt_mode, elt_value); | |
5615 | return expand_vector_broadcast (mode, elt_value); | |
5616 | } | |
5617 | } | |
5618 | else if (npatterns == 1) | |
5619 | /* We're duplicating a single value, but can't do better than | |
5620 | force it to memory and load from there. This handles things | |
5621 | like symbolic constants. */ | |
5622 | elt_value = CONST_VECTOR_ENCODED_ELT (src, 0); | |
43cacb12 | 5623 | |
4aeb1ba7 | 5624 | if (elt_value) |
8179efe0 | 5625 | { |
4aeb1ba7 RS |
5626 | /* Load the element from memory if we can, otherwise move it into |
5627 | a register and use a DUP. */ | |
5628 | rtx op = force_const_mem (elt_mode, elt_value); | |
5629 | if (!op) | |
5630 | op = force_reg (elt_mode, elt_value); | |
5631 | return expand_vector_broadcast (mode, op); | |
8179efe0 | 5632 | } |
43cacb12 RS |
5633 | } |
5634 | ||
4aeb1ba7 RS |
5635 | /* Try using INDEX. */ |
5636 | rtx base, step; | |
5637 | if (const_vec_series_p (src, &base, &step)) | |
5638 | { | |
5639 | aarch64_expand_vec_series (target, base, step); | |
5640 | return target; | |
5641 | } | |
5642 | ||
5643 | /* From here on, it's better to force the whole constant to memory | |
5644 | if we can. */ | |
5645 | if (GET_MODE_NUNITS (mode).is_constant ()) | |
5646 | return NULL_RTX; | |
5647 | ||
a065e0bb RS |
5648 | if (nelts_per_pattern == 2) |
5649 | if (rtx res = aarch64_expand_sve_const_vector_sel (target, src)) | |
5650 | return res; | |
5651 | ||
43cacb12 | 5652 | /* Expand each pattern individually. */ |
4aeb1ba7 | 5653 | gcc_assert (npatterns > 1); |
43cacb12 RS |
5654 | rtx_vector_builder builder; |
5655 | auto_vec<rtx, 16> vectors (npatterns); | |
5656 | for (unsigned int i = 0; i < npatterns; ++i) | |
5657 | { | |
5658 | builder.new_vector (mode, 1, nelts_per_pattern); | |
5659 | for (unsigned int j = 0; j < nelts_per_pattern; ++j) | |
5660 | builder.quick_push (CONST_VECTOR_ELT (src, i + j * npatterns)); | |
5661 | vectors.quick_push (force_reg (mode, builder.build ())); | |
5662 | } | |
5663 | ||
5664 | /* Use permutes to interleave the separate vectors. */ | |
5665 | while (npatterns > 1) | |
5666 | { | |
5667 | npatterns /= 2; | |
5668 | for (unsigned int i = 0; i < npatterns; ++i) | |
5669 | { | |
4aeb1ba7 | 5670 | rtx tmp = (npatterns == 1 ? target : gen_reg_rtx (mode)); |
43cacb12 RS |
5671 | rtvec v = gen_rtvec (2, vectors[i], vectors[i + npatterns]); |
5672 | emit_set_insn (tmp, gen_rtx_UNSPEC (mode, v, UNSPEC_ZIP1)); | |
5673 | vectors[i] = tmp; | |
5674 | } | |
5675 | } | |
4aeb1ba7 RS |
5676 | gcc_assert (vectors[0] == target); |
5677 | return target; | |
43cacb12 RS |
5678 | } |
5679 | ||
678faefc RS |
5680 | /* Use WHILE to set a predicate register of mode MODE in which the first |
5681 | VL bits are set and the rest are clear. Use TARGET for the register | |
5682 | if it's nonnull and convenient. */ | |
0b1fe8cf | 5683 | |
678faefc RS |
5684 | static rtx |
5685 | aarch64_sve_move_pred_via_while (rtx target, machine_mode mode, | |
5686 | unsigned int vl) | |
0b1fe8cf RS |
5687 | { |
5688 | rtx limit = force_reg (DImode, gen_int_mode (vl, DImode)); | |
678faefc | 5689 | target = aarch64_target_reg (target, mode); |
6ad9571b | 5690 | emit_insn (gen_while (UNSPEC_WHILELO, DImode, mode, |
624d0f07 | 5691 | target, const0_rtx, limit)); |
678faefc RS |
5692 | return target; |
5693 | } | |
5694 | ||
2803bc3b RS |
5695 | static rtx |
5696 | aarch64_expand_sve_const_pred_1 (rtx, rtx_vector_builder &, bool); | |
5697 | ||
5698 | /* BUILDER is a constant predicate in which the index of every set bit | |
5699 | is a multiple of ELT_SIZE (which is <= 8). Try to load the constant | |
5700 | by inverting every element at a multiple of ELT_SIZE and EORing the | |
5701 | result with an ELT_SIZE PTRUE. | |
5702 | ||
5703 | Return a register that contains the constant on success, otherwise | |
5704 | return null. Use TARGET as the register if it is nonnull and | |
5705 | convenient. */ | |
5706 | ||
5707 | static rtx | |
5708 | aarch64_expand_sve_const_pred_eor (rtx target, rtx_vector_builder &builder, | |
5709 | unsigned int elt_size) | |
5710 | { | |
5711 | /* Invert every element at a multiple of ELT_SIZE, keeping the | |
5712 | other bits zero. */ | |
5713 | rtx_vector_builder inv_builder (VNx16BImode, builder.npatterns (), | |
5714 | builder.nelts_per_pattern ()); | |
5715 | for (unsigned int i = 0; i < builder.encoded_nelts (); ++i) | |
5716 | if ((i & (elt_size - 1)) == 0 && INTVAL (builder.elt (i)) == 0) | |
5717 | inv_builder.quick_push (const1_rtx); | |
5718 | else | |
5719 | inv_builder.quick_push (const0_rtx); | |
5720 | inv_builder.finalize (); | |
5721 | ||
5722 | /* See if we can load the constant cheaply. */ | |
5723 | rtx inv = aarch64_expand_sve_const_pred_1 (NULL_RTX, inv_builder, false); | |
5724 | if (!inv) | |
5725 | return NULL_RTX; | |
5726 | ||
5727 | /* EOR the result with an ELT_SIZE PTRUE. */ | |
5728 | rtx mask = aarch64_ptrue_all (elt_size); | |
5729 | mask = force_reg (VNx16BImode, mask); | |
26bebf57 | 5730 | inv = gen_lowpart (VNx16BImode, inv); |
2803bc3b RS |
5731 | target = aarch64_target_reg (target, VNx16BImode); |
5732 | emit_insn (gen_aarch64_pred_z (XOR, VNx16BImode, target, mask, inv, mask)); | |
5733 | return target; | |
5734 | } | |
5735 | ||
5736 | /* BUILDER is a constant predicate in which the index of every set bit | |
5737 | is a multiple of ELT_SIZE (which is <= 8). Try to load the constant | |
5738 | using a TRN1 of size PERMUTE_SIZE, which is >= ELT_SIZE. Return the | |
5739 | register on success, otherwise return null. Use TARGET as the register | |
5740 | if nonnull and convenient. */ | |
5741 | ||
5742 | static rtx | |
5743 | aarch64_expand_sve_const_pred_trn (rtx target, rtx_vector_builder &builder, | |
5744 | unsigned int elt_size, | |
5745 | unsigned int permute_size) | |
5746 | { | |
5747 | /* We're going to split the constant into two new constants A and B, | |
5748 | with element I of BUILDER going into A if (I & PERMUTE_SIZE) == 0 | |
5749 | and into B otherwise. E.g. for PERMUTE_SIZE == 4 && ELT_SIZE == 1: | |
5750 | ||
5751 | A: { 0, 1, 2, 3, _, _, _, _, 8, 9, 10, 11, _, _, _, _ } | |
5752 | B: { 4, 5, 6, 7, _, _, _, _, 12, 13, 14, 15, _, _, _, _ } | |
5753 | ||
5754 | where _ indicates elements that will be discarded by the permute. | |
5755 | ||
5756 | First calculate the ELT_SIZEs for A and B. */ | |
5757 | unsigned int a_elt_size = GET_MODE_SIZE (DImode); | |
5758 | unsigned int b_elt_size = GET_MODE_SIZE (DImode); | |
5759 | for (unsigned int i = 0; i < builder.encoded_nelts (); i += elt_size) | |
5760 | if (INTVAL (builder.elt (i)) != 0) | |
5761 | { | |
5762 | if (i & permute_size) | |
5763 | b_elt_size |= i - permute_size; | |
5764 | else | |
5765 | a_elt_size |= i; | |
5766 | } | |
5767 | a_elt_size &= -a_elt_size; | |
5768 | b_elt_size &= -b_elt_size; | |
5769 | ||
5770 | /* Now construct the vectors themselves. */ | |
5771 | rtx_vector_builder a_builder (VNx16BImode, builder.npatterns (), | |
5772 | builder.nelts_per_pattern ()); | |
5773 | rtx_vector_builder b_builder (VNx16BImode, builder.npatterns (), | |
5774 | builder.nelts_per_pattern ()); | |
5775 | unsigned int nelts = builder.encoded_nelts (); | |
5776 | for (unsigned int i = 0; i < nelts; ++i) | |
5777 | if (i & (elt_size - 1)) | |
5778 | { | |
5779 | a_builder.quick_push (const0_rtx); | |
5780 | b_builder.quick_push (const0_rtx); | |
5781 | } | |
5782 | else if ((i & permute_size) == 0) | |
5783 | { | |
5784 | /* The A and B elements are significant. */ | |
5785 | a_builder.quick_push (builder.elt (i)); | |
5786 | b_builder.quick_push (builder.elt (i + permute_size)); | |
5787 | } | |
5788 | else | |
5789 | { | |
5790 | /* The A and B elements are going to be discarded, so pick whatever | |
5791 | is likely to give a nice constant. We are targeting element | |
5792 | sizes A_ELT_SIZE and B_ELT_SIZE for A and B respectively, | |
5793 | with the aim of each being a sequence of ones followed by | |
5794 | a sequence of zeros. So: | |
5795 | ||
5796 | * if X_ELT_SIZE <= PERMUTE_SIZE, the best approach is to | |
5797 | duplicate the last X_ELT_SIZE element, to extend the | |
5798 | current sequence of ones or zeros. | |
5799 | ||
5800 | * if X_ELT_SIZE > PERMUTE_SIZE, the best approach is to add a | |
5801 | zero, so that the constant really does have X_ELT_SIZE and | |
5802 | not a smaller size. */ | |
5803 | if (a_elt_size > permute_size) | |
5804 | a_builder.quick_push (const0_rtx); | |
5805 | else | |
5806 | a_builder.quick_push (a_builder.elt (i - a_elt_size)); | |
5807 | if (b_elt_size > permute_size) | |
5808 | b_builder.quick_push (const0_rtx); | |
5809 | else | |
5810 | b_builder.quick_push (b_builder.elt (i - b_elt_size)); | |
5811 | } | |
5812 | a_builder.finalize (); | |
5813 | b_builder.finalize (); | |
5814 | ||
5815 | /* Try loading A into a register. */ | |
5816 | rtx_insn *last = get_last_insn (); | |
5817 | rtx a = aarch64_expand_sve_const_pred_1 (NULL_RTX, a_builder, false); | |
5818 | if (!a) | |
5819 | return NULL_RTX; | |
5820 | ||
5821 | /* Try loading B into a register. */ | |
5822 | rtx b = a; | |
5823 | if (a_builder != b_builder) | |
5824 | { | |
5825 | b = aarch64_expand_sve_const_pred_1 (NULL_RTX, b_builder, false); | |
5826 | if (!b) | |
5827 | { | |
5828 | delete_insns_since (last); | |
5829 | return NULL_RTX; | |
5830 | } | |
5831 | } | |
5832 | ||
8535755a TC |
5833 | /* Emit the TRN1 itself. We emit a TRN that operates on VNx16BI |
5834 | operands but permutes them as though they had mode MODE. */ | |
2803bc3b | 5835 | machine_mode mode = aarch64_sve_pred_mode (permute_size).require (); |
8535755a TC |
5836 | target = aarch64_target_reg (target, GET_MODE (a)); |
5837 | rtx type_reg = CONST0_RTX (mode); | |
5838 | emit_insn (gen_aarch64_sve_trn1_conv (mode, target, a, b, type_reg)); | |
2803bc3b RS |
5839 | return target; |
5840 | } | |
5841 | ||
678faefc RS |
5842 | /* Subroutine of aarch64_expand_sve_const_pred. Try to load the VNx16BI |
5843 | constant in BUILDER into an SVE predicate register. Return the register | |
5844 | on success, otherwise return null. Use TARGET for the register if | |
2803bc3b RS |
5845 | nonnull and convenient. |
5846 | ||
5847 | ALLOW_RECURSE_P is true if we can use methods that would call this | |
5848 | function recursively. */ | |
678faefc RS |
5849 | |
5850 | static rtx | |
2803bc3b RS |
5851 | aarch64_expand_sve_const_pred_1 (rtx target, rtx_vector_builder &builder, |
5852 | bool allow_recurse_p) | |
678faefc RS |
5853 | { |
5854 | if (builder.encoded_nelts () == 1) | |
5855 | /* A PFALSE or a PTRUE .B ALL. */ | |
5856 | return aarch64_emit_set_immediate (target, builder); | |
5857 | ||
5858 | unsigned int elt_size = aarch64_widest_sve_pred_elt_size (builder); | |
5859 | if (int vl = aarch64_partial_ptrue_length (builder, elt_size)) | |
5860 | { | |
5861 | /* If we can load the constant using PTRUE, use it as-is. */ | |
5862 | machine_mode mode = aarch64_sve_pred_mode (elt_size).require (); | |
5863 | if (aarch64_svpattern_for_vl (mode, vl) != AARCH64_NUM_SVPATTERNS) | |
5864 | return aarch64_emit_set_immediate (target, builder); | |
5865 | ||
5866 | /* Otherwise use WHILE to set the first VL bits. */ | |
5867 | return aarch64_sve_move_pred_via_while (target, mode, vl); | |
5868 | } | |
5869 | ||
2803bc3b RS |
5870 | if (!allow_recurse_p) |
5871 | return NULL_RTX; | |
5872 | ||
5873 | /* Try inverting the vector in element size ELT_SIZE and then EORing | |
5874 | the result with an ELT_SIZE PTRUE. */ | |
5875 | if (INTVAL (builder.elt (0)) == 0) | |
5876 | if (rtx res = aarch64_expand_sve_const_pred_eor (target, builder, | |
5877 | elt_size)) | |
5878 | return res; | |
5879 | ||
5880 | /* Try using TRN1 to permute two simpler constants. */ | |
5881 | for (unsigned int i = elt_size; i <= 8; i *= 2) | |
5882 | if (rtx res = aarch64_expand_sve_const_pred_trn (target, builder, | |
5883 | elt_size, i)) | |
5884 | return res; | |
5885 | ||
678faefc RS |
5886 | return NULL_RTX; |
5887 | } | |
5888 | ||
5889 | /* Return an SVE predicate register that contains the VNx16BImode | |
5890 | constant in BUILDER, without going through the move expanders. | |
5891 | ||
5892 | The returned register can have whatever mode seems most natural | |
5893 | given the contents of BUILDER. Use TARGET for the result if | |
5894 | convenient. */ | |
5895 | ||
5896 | static rtx | |
5897 | aarch64_expand_sve_const_pred (rtx target, rtx_vector_builder &builder) | |
5898 | { | |
5899 | /* Try loading the constant using pure predicate operations. */ | |
2803bc3b | 5900 | if (rtx res = aarch64_expand_sve_const_pred_1 (target, builder, true)) |
678faefc RS |
5901 | return res; |
5902 | ||
5903 | /* Try forcing the constant to memory. */ | |
5904 | if (builder.full_nelts ().is_constant ()) | |
5905 | if (rtx mem = force_const_mem (VNx16BImode, builder.build ())) | |
5906 | { | |
5907 | target = aarch64_target_reg (target, VNx16BImode); | |
5908 | emit_move_insn (target, mem); | |
5909 | return target; | |
5910 | } | |
5911 | ||
5912 | /* The last resort is to load the constant as an integer and then | |
5913 | compare it against zero. Use -1 for set bits in order to increase | |
5914 | the changes of using SVE DUPM or an Advanced SIMD byte mask. */ | |
5915 | rtx_vector_builder int_builder (VNx16QImode, builder.npatterns (), | |
5916 | builder.nelts_per_pattern ()); | |
5917 | for (unsigned int i = 0; i < builder.encoded_nelts (); ++i) | |
5918 | int_builder.quick_push (INTVAL (builder.elt (i)) | |
5919 | ? constm1_rtx : const0_rtx); | |
5920 | return aarch64_convert_sve_data_to_pred (target, VNx16BImode, | |
5921 | int_builder.build ()); | |
0b1fe8cf RS |
5922 | } |
5923 | ||
4aeb1ba7 | 5924 | /* Set DEST to immediate IMM. */ |
43cacb12 RS |
5925 | |
5926 | void | |
4aeb1ba7 | 5927 | aarch64_expand_mov_immediate (rtx dest, rtx imm) |
43cacb12 RS |
5928 | { |
5929 | machine_mode mode = GET_MODE (dest); | |
82614948 RR |
5930 | |
5931 | /* Check on what type of symbol it is. */ | |
77e994c9 | 5932 | scalar_int_mode int_mode; |
3793ecc1 AC |
5933 | if ((SYMBOL_REF_P (imm) |
5934 | || LABEL_REF_P (imm) | |
43cacb12 RS |
5935 | || GET_CODE (imm) == CONST |
5936 | || GET_CODE (imm) == CONST_POLY_INT) | |
77e994c9 | 5937 | && is_a <scalar_int_mode> (mode, &int_mode)) |
82614948 | 5938 | { |
43cacb12 RS |
5939 | rtx mem; |
5940 | poly_int64 offset; | |
5941 | HOST_WIDE_INT const_offset; | |
82614948 RR |
5942 | enum aarch64_symbol_type sty; |
5943 | ||
5944 | /* If we have (const (plus symbol offset)), separate out the offset | |
5945 | before we start classifying the symbol. */ | |
43cacb12 | 5946 | rtx base = strip_offset (imm, &offset); |
82614948 | 5947 | |
43cacb12 RS |
5948 | /* We must always add an offset involving VL separately, rather than |
5949 | folding it into the relocation. */ | |
5950 | if (!offset.is_constant (&const_offset)) | |
5951 | { | |
c0e0174b RS |
5952 | if (!TARGET_SVE) |
5953 | { | |
5954 | aarch64_report_sve_required (); | |
5955 | return; | |
5956 | } | |
43cacb12 RS |
5957 | if (base == const0_rtx && aarch64_sve_cnt_immediate_p (offset)) |
5958 | emit_insn (gen_rtx_SET (dest, imm)); | |
5959 | else | |
5960 | { | |
5961 | /* Do arithmetic on 32-bit values if the result is smaller | |
5962 | than that. */ | |
5963 | if (partial_subreg_p (int_mode, SImode)) | |
5964 | { | |
5965 | /* It is invalid to do symbol calculations in modes | |
5966 | narrower than SImode. */ | |
5967 | gcc_assert (base == const0_rtx); | |
5968 | dest = gen_lowpart (SImode, dest); | |
5969 | int_mode = SImode; | |
5970 | } | |
5971 | if (base != const0_rtx) | |
5972 | { | |
5973 | base = aarch64_force_temporary (int_mode, dest, base); | |
5974 | aarch64_add_offset (int_mode, dest, base, offset, | |
5975 | NULL_RTX, NULL_RTX, false); | |
5976 | } | |
5977 | else | |
5978 | aarch64_add_offset (int_mode, dest, base, offset, | |
5979 | dest, NULL_RTX, false); | |
5980 | } | |
5981 | return; | |
5982 | } | |
5983 | ||
5984 | sty = aarch64_classify_symbol (base, const_offset); | |
82614948 RR |
5985 | switch (sty) |
5986 | { | |
5987 | case SYMBOL_FORCE_TO_MEM: | |
e8beba1c RS |
5988 | if (int_mode != ptr_mode) |
5989 | imm = convert_memory_address (ptr_mode, imm); | |
5990 | ||
43cacb12 | 5991 | if (const_offset != 0 |
e8beba1c | 5992 | && targetm.cannot_force_const_mem (ptr_mode, imm)) |
82614948 RR |
5993 | { |
5994 | gcc_assert (can_create_pseudo_p ()); | |
77e994c9 | 5995 | base = aarch64_force_temporary (int_mode, dest, base); |
43cacb12 RS |
5996 | aarch64_add_offset (int_mode, dest, base, const_offset, |
5997 | NULL_RTX, NULL_RTX, false); | |
82614948 RR |
5998 | return; |
5999 | } | |
b4f50fd4 | 6000 | |
82614948 RR |
6001 | mem = force_const_mem (ptr_mode, imm); |
6002 | gcc_assert (mem); | |
b4f50fd4 RR |
6003 | |
6004 | /* If we aren't generating PC relative literals, then | |
6005 | we need to expand the literal pool access carefully. | |
6006 | This is something that needs to be done in a number | |
6007 | of places, so could well live as a separate function. */ | |
9ee6540a | 6008 | if (!aarch64_pcrelative_literal_loads) |
b4f50fd4 RR |
6009 | { |
6010 | gcc_assert (can_create_pseudo_p ()); | |
6011 | base = gen_reg_rtx (ptr_mode); | |
6012 | aarch64_expand_mov_immediate (base, XEXP (mem, 0)); | |
00eee3fa WD |
6013 | if (ptr_mode != Pmode) |
6014 | base = convert_memory_address (Pmode, base); | |
b4f50fd4 RR |
6015 | mem = gen_rtx_MEM (ptr_mode, base); |
6016 | } | |
6017 | ||
77e994c9 RS |
6018 | if (int_mode != ptr_mode) |
6019 | mem = gen_rtx_ZERO_EXTEND (int_mode, mem); | |
b4f50fd4 | 6020 | |
f7df4a84 | 6021 | emit_insn (gen_rtx_SET (dest, mem)); |
b4f50fd4 | 6022 | |
82614948 RR |
6023 | return; |
6024 | ||
6025 | case SYMBOL_SMALL_TLSGD: | |
6026 | case SYMBOL_SMALL_TLSDESC: | |
79496620 | 6027 | case SYMBOL_SMALL_TLSIE: |
1b1e81f8 | 6028 | case SYMBOL_SMALL_GOT_28K: |
6642bdb4 | 6029 | case SYMBOL_SMALL_GOT_4G: |
82614948 | 6030 | case SYMBOL_TINY_GOT: |
5ae7caad | 6031 | case SYMBOL_TINY_TLSIE: |
43cacb12 | 6032 | if (const_offset != 0) |
82614948 RR |
6033 | { |
6034 | gcc_assert(can_create_pseudo_p ()); | |
77e994c9 | 6035 | base = aarch64_force_temporary (int_mode, dest, base); |
43cacb12 RS |
6036 | aarch64_add_offset (int_mode, dest, base, const_offset, |
6037 | NULL_RTX, NULL_RTX, false); | |
82614948 RR |
6038 | return; |
6039 | } | |
6040 | /* FALLTHRU */ | |
6041 | ||
82614948 RR |
6042 | case SYMBOL_SMALL_ABSOLUTE: |
6043 | case SYMBOL_TINY_ABSOLUTE: | |
cbf5629e | 6044 | case SYMBOL_TLSLE12: |
d18ba284 | 6045 | case SYMBOL_TLSLE24: |
cbf5629e JW |
6046 | case SYMBOL_TLSLE32: |
6047 | case SYMBOL_TLSLE48: | |
82614948 RR |
6048 | aarch64_load_symref_appropriately (dest, imm, sty); |
6049 | return; | |
6050 | ||
6051 | default: | |
6052 | gcc_unreachable (); | |
6053 | } | |
6054 | } | |
6055 | ||
6056 | if (!CONST_INT_P (imm)) | |
6057 | { | |
678faefc RS |
6058 | if (GET_MODE_CLASS (mode) == MODE_VECTOR_BOOL) |
6059 | { | |
6060 | /* Only the low bit of each .H, .S and .D element is defined, | |
6061 | so we can set the upper bits to whatever we like. If the | |
6062 | predicate is all-true in MODE, prefer to set all the undefined | |
6063 | bits as well, so that we can share a single .B predicate for | |
6064 | all modes. */ | |
6065 | if (imm == CONSTM1_RTX (mode)) | |
6066 | imm = CONSTM1_RTX (VNx16BImode); | |
6067 | ||
6068 | /* All methods for constructing predicate modes wider than VNx16BI | |
6069 | will set the upper bits of each element to zero. Expose this | |
6070 | by moving such constants as a VNx16BI, so that all bits are | |
6071 | significant and so that constants for different modes can be | |
6072 | shared. The wider constant will still be available as a | |
6073 | REG_EQUAL note. */ | |
6074 | rtx_vector_builder builder; | |
6075 | if (aarch64_get_sve_pred_bits (builder, imm)) | |
6076 | { | |
6077 | rtx res = aarch64_expand_sve_const_pred (dest, builder); | |
6078 | if (dest != res) | |
6079 | emit_move_insn (dest, gen_lowpart (mode, res)); | |
6080 | return; | |
6081 | } | |
6082 | } | |
6083 | ||
43cacb12 RS |
6084 | if (GET_CODE (imm) == HIGH |
6085 | || aarch64_simd_valid_immediate (imm, NULL)) | |
43cacb12 | 6086 | { |
4aeb1ba7 RS |
6087 | emit_insn (gen_rtx_SET (dest, imm)); |
6088 | return; | |
43e9d192 | 6089 | } |
82614948 | 6090 | |
568b9c0e | 6091 | if (CONST_VECTOR_P (imm) && aarch64_sve_data_mode_p (mode)) |
4aeb1ba7 RS |
6092 | if (rtx res = aarch64_expand_sve_const_vector (dest, imm)) |
6093 | { | |
6094 | if (dest != res) | |
6095 | emit_insn (gen_aarch64_sve_reinterpret (mode, dest, res)); | |
6096 | return; | |
6097 | } | |
6098 | ||
6099 | rtx mem = force_const_mem (mode, imm); | |
6100 | gcc_assert (mem); | |
6101 | emit_move_insn (dest, mem); | |
82614948 | 6102 | return; |
43e9d192 | 6103 | } |
82614948 | 6104 | |
77e994c9 RS |
6105 | aarch64_internal_mov_immediate (dest, imm, true, |
6106 | as_a <scalar_int_mode> (mode)); | |
43e9d192 IB |
6107 | } |
6108 | ||
74b27d8e RS |
6109 | /* Return the MEM rtx that provides the canary value that should be used |
6110 | for stack-smashing protection. MODE is the mode of the memory. | |
6111 | For SSP_GLOBAL, DECL_RTL is the MEM rtx for the canary variable | |
6112 | (__stack_chk_guard), otherwise it has no useful value. SALT_TYPE | |
6113 | indicates whether the caller is performing a SET or a TEST operation. */ | |
6114 | ||
6115 | rtx | |
6116 | aarch64_stack_protect_canary_mem (machine_mode mode, rtx decl_rtl, | |
6117 | aarch64_salt_type salt_type) | |
6118 | { | |
6119 | rtx addr; | |
6120 | if (aarch64_stack_protector_guard == SSP_GLOBAL) | |
6121 | { | |
6122 | gcc_assert (MEM_P (decl_rtl)); | |
6123 | addr = XEXP (decl_rtl, 0); | |
6124 | poly_int64 offset; | |
6125 | rtx base = strip_offset_and_salt (addr, &offset); | |
6126 | if (!SYMBOL_REF_P (base)) | |
6127 | return decl_rtl; | |
6128 | ||
6129 | rtvec v = gen_rtvec (2, base, GEN_INT (salt_type)); | |
6130 | addr = gen_rtx_UNSPEC (Pmode, v, UNSPEC_SALT_ADDR); | |
6131 | addr = gen_rtx_CONST (Pmode, addr); | |
6132 | addr = plus_constant (Pmode, addr, offset); | |
6133 | } | |
6134 | else | |
6135 | { | |
6136 | /* Calculate the address from the system register. */ | |
6137 | rtx salt = GEN_INT (salt_type); | |
6138 | addr = gen_reg_rtx (mode); | |
6139 | if (mode == DImode) | |
6140 | emit_insn (gen_reg_stack_protect_address_di (addr, salt)); | |
6141 | else | |
6142 | { | |
6143 | emit_insn (gen_reg_stack_protect_address_si (addr, salt)); | |
6144 | addr = convert_memory_address (Pmode, addr); | |
6145 | } | |
6146 | addr = plus_constant (Pmode, addr, aarch64_stack_protector_guard_offset); | |
6147 | } | |
6148 | return gen_rtx_MEM (mode, force_reg (Pmode, addr)); | |
6149 | } | |
6150 | ||
43cacb12 RS |
6151 | /* Emit an SVE predicated move from SRC to DEST. PRED is a predicate |
6152 | that is known to contain PTRUE. */ | |
6153 | ||
6154 | void | |
6155 | aarch64_emit_sve_pred_move (rtx dest, rtx pred, rtx src) | |
6156 | { | |
0c63a8ee TC |
6157 | expand_operand ops[3]; |
6158 | machine_mode mode = GET_MODE (dest); | |
6159 | create_output_operand (&ops[0], dest, mode); | |
6160 | create_input_operand (&ops[1], pred, GET_MODE(pred)); | |
6161 | create_input_operand (&ops[2], src, mode); | |
f2b29269 | 6162 | temporary_volatile_ok v (true); |
0c63a8ee | 6163 | expand_insn (code_for_aarch64_pred_mov (mode), 3, ops); |
43cacb12 RS |
6164 | } |
6165 | ||
6166 | /* Expand a pre-RA SVE data move from SRC to DEST in which at least one | |
6167 | operand is in memory. In this case we need to use the predicated LD1 | |
6168 | and ST1 instead of LDR and STR, both for correctness on big-endian | |
6169 | targets and because LD1 and ST1 support a wider range of addressing modes. | |
6170 | PRED_MODE is the mode of the predicate. | |
6171 | ||
6172 | See the comment at the head of aarch64-sve.md for details about the | |
6173 | big-endian handling. */ | |
6174 | ||
6175 | void | |
6176 | aarch64_expand_sve_mem_move (rtx dest, rtx src, machine_mode pred_mode) | |
6177 | { | |
6178 | machine_mode mode = GET_MODE (dest); | |
16de3637 | 6179 | rtx ptrue = aarch64_ptrue_reg (pred_mode); |
43cacb12 RS |
6180 | if (!register_operand (src, mode) |
6181 | && !register_operand (dest, mode)) | |
6182 | { | |
6183 | rtx tmp = gen_reg_rtx (mode); | |
6184 | if (MEM_P (src)) | |
6185 | aarch64_emit_sve_pred_move (tmp, ptrue, src); | |
6186 | else | |
6187 | emit_move_insn (tmp, src); | |
6188 | src = tmp; | |
6189 | } | |
6190 | aarch64_emit_sve_pred_move (dest, ptrue, src); | |
6191 | } | |
6192 | ||
002092be RS |
6193 | /* Called only on big-endian targets. See whether an SVE vector move |
6194 | from SRC to DEST is effectively a REV[BHW] instruction, because at | |
6195 | least one operand is a subreg of an SVE vector that has wider or | |
6196 | narrower elements. Return true and emit the instruction if so. | |
6197 | ||
6198 | For example: | |
6199 | ||
6200 | (set (reg:VNx8HI R1) (subreg:VNx8HI (reg:VNx16QI R2) 0)) | |
6201 | ||
6202 | represents a VIEW_CONVERT between the following vectors, viewed | |
6203 | in memory order: | |
6204 | ||
6205 | R2: { [0].high, [0].low, [1].high, [1].low, ... } | |
6206 | R1: { [0], [1], [2], [3], ... } | |
6207 | ||
6208 | The high part of lane X in R2 should therefore correspond to lane X*2 | |
6209 | of R1, but the register representations are: | |
6210 | ||
6211 | msb lsb | |
6212 | R2: ...... [1].high [1].low [0].high [0].low | |
6213 | R1: ...... [3] [2] [1] [0] | |
6214 | ||
6215 | where the low part of lane X in R2 corresponds to lane X*2 in R1. | |
6216 | We therefore need a reverse operation to swap the high and low values | |
6217 | around. | |
6218 | ||
6219 | This is purely an optimization. Without it we would spill the | |
6220 | subreg operand to the stack in one mode and reload it in the | |
6221 | other mode, which has the same effect as the REV. */ | |
6222 | ||
6223 | bool | |
6224 | aarch64_maybe_expand_sve_subreg_move (rtx dest, rtx src) | |
6225 | { | |
6226 | gcc_assert (BYTES_BIG_ENDIAN); | |
a4d9837e RS |
6227 | |
6228 | /* Do not try to optimize subregs that LRA has created for matched | |
6229 | reloads. These subregs only exist as a temporary measure to make | |
6230 | the RTL well-formed, but they are exempt from the usual | |
6231 | TARGET_CAN_CHANGE_MODE_CLASS rules. | |
6232 | ||
6233 | For example, if we have: | |
6234 | ||
6235 | (set (reg:VNx8HI R1) (foo:VNx8HI (reg:VNx4SI R2))) | |
6236 | ||
6237 | and the constraints require R1 and R2 to be in the same register, | |
6238 | LRA may need to create RTL such as: | |
6239 | ||
6240 | (set (subreg:VNx4SI (reg:VNx8HI TMP) 0) (reg:VNx4SI R2)) | |
6241 | (set (reg:VNx8HI TMP) (foo:VNx8HI (subreg:VNx4SI (reg:VNx8HI TMP) 0))) | |
6242 | (set (reg:VNx8HI R1) (reg:VNx8HI TMP)) | |
6243 | ||
6244 | which forces both the input and output of the original instruction | |
6245 | to use the same hard register. But for this to work, the normal | |
6246 | rules have to be suppressed on the subreg input, otherwise LRA | |
6247 | would need to reload that input too, meaning that the process | |
6248 | would never terminate. To compensate for this, the normal rules | |
6249 | are also suppressed for the subreg output of the first move. | |
6250 | Ignoring the special case and handling the first move normally | |
6251 | would therefore generate wrong code: we would reverse the elements | |
6252 | for the first subreg but not reverse them back for the second subreg. */ | |
6253 | if (SUBREG_P (dest) && !LRA_SUBREG_P (dest)) | |
002092be | 6254 | dest = SUBREG_REG (dest); |
a4d9837e | 6255 | if (SUBREG_P (src) && !LRA_SUBREG_P (src)) |
002092be RS |
6256 | src = SUBREG_REG (src); |
6257 | ||
6258 | /* The optimization handles two single SVE REGs with different element | |
6259 | sizes. */ | |
6260 | if (!REG_P (dest) | |
6261 | || !REG_P (src) | |
6262 | || aarch64_classify_vector_mode (GET_MODE (dest)) != VEC_SVE_DATA | |
6263 | || aarch64_classify_vector_mode (GET_MODE (src)) != VEC_SVE_DATA | |
6264 | || (GET_MODE_UNIT_SIZE (GET_MODE (dest)) | |
6265 | == GET_MODE_UNIT_SIZE (GET_MODE (src)))) | |
6266 | return false; | |
6267 | ||
6268 | /* Generate *aarch64_sve_mov<mode>_subreg_be. */ | |
16de3637 | 6269 | rtx ptrue = aarch64_ptrue_reg (VNx16BImode); |
002092be RS |
6270 | rtx unspec = gen_rtx_UNSPEC (GET_MODE (dest), gen_rtvec (2, ptrue, src), |
6271 | UNSPEC_REV_SUBREG); | |
6272 | emit_insn (gen_rtx_SET (dest, unspec)); | |
6273 | return true; | |
6274 | } | |
6275 | ||
6276 | /* Return a copy of X with mode MODE, without changing its other | |
6277 | attributes. Unlike gen_lowpart, this doesn't care whether the | |
6278 | mode change is valid. */ | |
6279 | ||
624d0f07 | 6280 | rtx |
002092be RS |
6281 | aarch64_replace_reg_mode (rtx x, machine_mode mode) |
6282 | { | |
6283 | if (GET_MODE (x) == mode) | |
6284 | return x; | |
6285 | ||
6286 | x = shallow_copy_rtx (x); | |
6287 | set_mode_and_regno (x, mode, REGNO (x)); | |
6288 | return x; | |
6289 | } | |
6290 | ||
d7a09c44 RS |
6291 | /* Return the SVE REV[BHW] unspec for reversing quantites of mode MODE |
6292 | stored in wider integer containers. */ | |
6293 | ||
6294 | static unsigned int | |
6295 | aarch64_sve_rev_unspec (machine_mode mode) | |
6296 | { | |
6297 | switch (GET_MODE_UNIT_SIZE (mode)) | |
6298 | { | |
6299 | case 1: return UNSPEC_REVB; | |
6300 | case 2: return UNSPEC_REVH; | |
6301 | case 4: return UNSPEC_REVW; | |
6302 | } | |
6303 | gcc_unreachable (); | |
6304 | } | |
6305 | ||
002092be RS |
6306 | /* Split a *aarch64_sve_mov<mode>_subreg_be pattern with the given |
6307 | operands. */ | |
6308 | ||
6309 | void | |
6310 | aarch64_split_sve_subreg_move (rtx dest, rtx ptrue, rtx src) | |
6311 | { | |
d7a09c44 RS |
6312 | /* Decide which REV operation we need. The mode with wider elements |
6313 | determines the mode of the operands and the mode with the narrower | |
002092be | 6314 | elements determines the reverse width. */ |
5c06093c RS |
6315 | machine_mode mode_with_wider_elts = aarch64_sve_int_mode (GET_MODE (dest)); |
6316 | machine_mode mode_with_narrower_elts = aarch64_sve_int_mode (GET_MODE (src)); | |
002092be RS |
6317 | if (GET_MODE_UNIT_SIZE (mode_with_wider_elts) |
6318 | < GET_MODE_UNIT_SIZE (mode_with_narrower_elts)) | |
6319 | std::swap (mode_with_wider_elts, mode_with_narrower_elts); | |
6320 | ||
d7a09c44 | 6321 | unsigned int unspec = aarch64_sve_rev_unspec (mode_with_narrower_elts); |
cc68f7c2 | 6322 | machine_mode pred_mode = aarch64_sve_pred_mode (mode_with_wider_elts); |
002092be | 6323 | |
d7a09c44 | 6324 | /* Get the operands in the appropriate modes and emit the instruction. */ |
002092be | 6325 | ptrue = gen_lowpart (pred_mode, ptrue); |
d7a09c44 RS |
6326 | dest = aarch64_replace_reg_mode (dest, mode_with_wider_elts); |
6327 | src = aarch64_replace_reg_mode (src, mode_with_wider_elts); | |
6328 | emit_insn (gen_aarch64_pred (unspec, mode_with_wider_elts, | |
6329 | dest, ptrue, src)); | |
002092be RS |
6330 | } |
6331 | ||
43e9d192 | 6332 | static bool |
c600df9a | 6333 | aarch64_function_ok_for_sibcall (tree, tree exp) |
43e9d192 | 6334 | { |
c600df9a | 6335 | if (crtl->abi->id () != expr_callee_abi (exp).id ()) |
a0d0b980 SE |
6336 | return false; |
6337 | ||
43e9d192 IB |
6338 | return true; |
6339 | } | |
6340 | ||
38e62001 RS |
6341 | /* Subroutine of aarch64_pass_by_reference for arguments that are not |
6342 | passed in SVE registers. */ | |
43e9d192 IB |
6343 | |
6344 | static bool | |
56fe3ca3 RS |
6345 | aarch64_pass_by_reference_1 (CUMULATIVE_ARGS *pcum, |
6346 | const function_arg_info &arg) | |
43e9d192 IB |
6347 | { |
6348 | HOST_WIDE_INT size; | |
ef4bddc2 | 6349 | machine_mode dummymode; |
43e9d192 IB |
6350 | int nregs; |
6351 | ||
6352 | /* GET_MODE_SIZE (BLKmode) is useless since it is 0. */ | |
52090e4d RS |
6353 | if (arg.mode == BLKmode && arg.type) |
6354 | size = int_size_in_bytes (arg.type); | |
6a70badb RS |
6355 | else |
6356 | /* No frontends can create types with variable-sized modes, so we | |
6357 | shouldn't be asked to pass or return them. */ | |
52090e4d | 6358 | size = GET_MODE_SIZE (arg.mode).to_constant (); |
43e9d192 | 6359 | |
aadc1c43 | 6360 | /* Aggregates are passed by reference based on their size. */ |
52090e4d RS |
6361 | if (arg.aggregate_type_p ()) |
6362 | size = int_size_in_bytes (arg.type); | |
43e9d192 IB |
6363 | |
6364 | /* Variable sized arguments are always returned by reference. */ | |
6365 | if (size < 0) | |
6366 | return true; | |
6367 | ||
6368 | /* Can this be a candidate to be passed in fp/simd register(s)? */ | |
52090e4d | 6369 | if (aarch64_vfp_is_call_or_return_candidate (arg.mode, arg.type, |
56fe3ca3 RS |
6370 | &dummymode, &nregs, NULL, |
6371 | !pcum || pcum->silent_p)) | |
43e9d192 IB |
6372 | return false; |
6373 | ||
6374 | /* Arguments which are variable sized or larger than 2 registers are | |
6375 | passed by reference unless they are a homogenous floating point | |
6376 | aggregate. */ | |
6377 | return size > 2 * UNITS_PER_WORD; | |
6378 | } | |
6379 | ||
38e62001 RS |
6380 | /* Implement TARGET_PASS_BY_REFERENCE. */ |
6381 | ||
6382 | static bool | |
6383 | aarch64_pass_by_reference (cumulative_args_t pcum_v, | |
6384 | const function_arg_info &arg) | |
6385 | { | |
6386 | CUMULATIVE_ARGS *pcum = get_cumulative_args (pcum_v); | |
6387 | ||
6388 | if (!arg.type) | |
56fe3ca3 | 6389 | return aarch64_pass_by_reference_1 (pcum, arg); |
38e62001 RS |
6390 | |
6391 | pure_scalable_type_info pst_info; | |
6392 | switch (pst_info.analyze (arg.type)) | |
6393 | { | |
6394 | case pure_scalable_type_info::IS_PST: | |
6395 | if (pcum && !pcum->silent_p && !TARGET_SVE) | |
6396 | /* We can't gracefully recover at this point, so make this a | |
6397 | fatal error. */ | |
6398 | fatal_error (input_location, "arguments of type %qT require" | |
6399 | " the SVE ISA extension", arg.type); | |
6400 | ||
6401 | /* Variadic SVE types are passed by reference. Normal non-variadic | |
6402 | arguments are too if we've run out of registers. */ | |
6403 | return (!arg.named | |
6404 | || pcum->aapcs_nvrn + pst_info.num_zr () > NUM_FP_ARG_REGS | |
6405 | || pcum->aapcs_nprn + pst_info.num_pr () > NUM_PR_ARG_REGS); | |
6406 | ||
6407 | case pure_scalable_type_info::DOESNT_MATTER: | |
56fe3ca3 | 6408 | gcc_assert (aarch64_pass_by_reference_1 (pcum, arg)); |
38e62001 RS |
6409 | return true; |
6410 | ||
6411 | case pure_scalable_type_info::NO_ABI_IDENTITY: | |
6412 | case pure_scalable_type_info::ISNT_PST: | |
56fe3ca3 | 6413 | return aarch64_pass_by_reference_1 (pcum, arg); |
38e62001 RS |
6414 | } |
6415 | gcc_unreachable (); | |
6416 | } | |
6417 | ||
43e9d192 IB |
6418 | /* Return TRUE if VALTYPE is padded to its least significant bits. */ |
6419 | static bool | |
6420 | aarch64_return_in_msb (const_tree valtype) | |
6421 | { | |
ef4bddc2 | 6422 | machine_mode dummy_mode; |
43e9d192 IB |
6423 | int dummy_int; |
6424 | ||
6425 | /* Never happens in little-endian mode. */ | |
6426 | if (!BYTES_BIG_ENDIAN) | |
6427 | return false; | |
6428 | ||
6429 | /* Only composite types smaller than or equal to 16 bytes can | |
6430 | be potentially returned in registers. */ | |
6431 | if (!aarch64_composite_type_p (valtype, TYPE_MODE (valtype)) | |
6432 | || int_size_in_bytes (valtype) <= 0 | |
6433 | || int_size_in_bytes (valtype) > 16) | |
6434 | return false; | |
6435 | ||
6436 | /* But not a composite that is an HFA (Homogeneous Floating-point Aggregate) | |
6437 | or an HVA (Homogeneous Short-Vector Aggregate); such a special composite | |
6438 | is always passed/returned in the least significant bits of fp/simd | |
6439 | register(s). */ | |
6440 | if (aarch64_vfp_is_call_or_return_candidate (TYPE_MODE (valtype), valtype, | |
56fe3ca3 RS |
6441 | &dummy_mode, &dummy_int, NULL, |
6442 | false)) | |
43e9d192 IB |
6443 | return false; |
6444 | ||
38e62001 RS |
6445 | /* Likewise pure scalable types for SVE vector and predicate registers. */ |
6446 | pure_scalable_type_info pst_info; | |
6447 | if (pst_info.analyze_registers (valtype)) | |
6448 | return false; | |
6449 | ||
43e9d192 IB |
6450 | return true; |
6451 | } | |
6452 | ||
38e62001 RS |
6453 | /* Implement TARGET_FUNCTION_VALUE. |
6454 | Define how to find the value returned by a function. */ | |
6455 | ||
43e9d192 | 6456 | static rtx |
38e62001 RS |
6457 | aarch64_function_value (const_tree type, const_tree func, |
6458 | bool outgoing ATTRIBUTE_UNUSED) | |
43e9d192 | 6459 | { |
38e62001 RS |
6460 | machine_mode mode; |
6461 | int unsignedp; | |
c600df9a | 6462 | |
38e62001 RS |
6463 | mode = TYPE_MODE (type); |
6464 | if (INTEGRAL_TYPE_P (type)) | |
6465 | mode = promote_function_mode (type, mode, &unsignedp, func, 1); | |
c600df9a | 6466 | |
38e62001 RS |
6467 | pure_scalable_type_info pst_info; |
6468 | if (type && pst_info.analyze_registers (type)) | |
6469 | return pst_info.get_rtx (mode, V0_REGNUM, P0_REGNUM); | |
c600df9a | 6470 | |
38e62001 RS |
6471 | /* Generic vectors that map to full SVE modes with -msve-vector-bits=N |
6472 | are returned in memory, not by value. */ | |
6473 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
6474 | bool sve_p = (vec_flags & VEC_ANY_SVE); | |
c600df9a | 6475 | |
43e9d192 IB |
6476 | if (aarch64_return_in_msb (type)) |
6477 | { | |
6478 | HOST_WIDE_INT size = int_size_in_bytes (type); | |
6479 | ||
6480 | if (size % UNITS_PER_WORD != 0) | |
6481 | { | |
6482 | size += UNITS_PER_WORD - size % UNITS_PER_WORD; | |
f4b31647 | 6483 | mode = int_mode_for_size (size * BITS_PER_UNIT, 0).require (); |
43e9d192 IB |
6484 | } |
6485 | } | |
6486 | ||
6aa5370c RS |
6487 | int count; |
6488 | machine_mode ag_mode; | |
56fe3ca3 RS |
6489 | if (aarch64_vfp_is_call_or_return_candidate (mode, type, &ag_mode, &count, |
6490 | NULL, false)) | |
43e9d192 | 6491 | { |
38e62001 | 6492 | gcc_assert (!sve_p); |
43e9d192 IB |
6493 | if (!aarch64_composite_type_p (type, mode)) |
6494 | { | |
6495 | gcc_assert (count == 1 && mode == ag_mode); | |
6496 | return gen_rtx_REG (mode, V0_REGNUM); | |
6497 | } | |
eb04ccf4 JW |
6498 | else if (aarch64_advsimd_full_struct_mode_p (mode) |
6499 | && known_eq (GET_MODE_SIZE (ag_mode), 16)) | |
6500 | return gen_rtx_REG (mode, V0_REGNUM); | |
6501 | else if (aarch64_advsimd_partial_struct_mode_p (mode) | |
6502 | && known_eq (GET_MODE_SIZE (ag_mode), 8)) | |
6503 | return gen_rtx_REG (mode, V0_REGNUM); | |
43e9d192 IB |
6504 | else |
6505 | { | |
6506 | int i; | |
6507 | rtx par; | |
6508 | ||
6509 | par = gen_rtx_PARALLEL (mode, rtvec_alloc (count)); | |
6510 | for (i = 0; i < count; i++) | |
6511 | { | |
6512 | rtx tmp = gen_rtx_REG (ag_mode, V0_REGNUM + i); | |
6a70badb RS |
6513 | rtx offset = gen_int_mode (i * GET_MODE_SIZE (ag_mode), Pmode); |
6514 | tmp = gen_rtx_EXPR_LIST (VOIDmode, tmp, offset); | |
43e9d192 IB |
6515 | XVECEXP (par, 0, i) = tmp; |
6516 | } | |
6517 | return par; | |
6518 | } | |
6519 | } | |
6520 | else | |
6aa5370c | 6521 | { |
38e62001 RS |
6522 | if (sve_p) |
6523 | { | |
6524 | /* Vector types can acquire a partial SVE mode using things like | |
6525 | __attribute__((vector_size(N))), and this is potentially useful. | |
6526 | However, the choice of mode doesn't affect the type's ABI | |
6527 | identity, so we should treat the types as though they had | |
6528 | the associated integer mode, just like they did before SVE | |
6529 | was introduced. | |
6530 | ||
6531 | We know that the vector must be 128 bits or smaller, | |
6532 | otherwise we'd have returned it in memory instead. */ | |
6533 | gcc_assert (type | |
6534 | && (aarch64_some_values_include_pst_objects_p (type) | |
6535 | || (vec_flags & VEC_PARTIAL))); | |
6536 | ||
6537 | scalar_int_mode int_mode = int_mode_for_mode (mode).require (); | |
6538 | rtx reg = gen_rtx_REG (int_mode, R0_REGNUM); | |
6539 | rtx pair = gen_rtx_EXPR_LIST (VOIDmode, reg, const0_rtx); | |
6540 | return gen_rtx_PARALLEL (mode, gen_rtvec (1, pair)); | |
6541 | } | |
6542 | return gen_rtx_REG (mode, R0_REGNUM); | |
6aa5370c | 6543 | } |
6aa5370c RS |
6544 | } |
6545 | ||
43e9d192 IB |
6546 | /* Implements TARGET_FUNCTION_VALUE_REGNO_P. |
6547 | Return true if REGNO is the number of a hard register in which the values | |
6548 | of called function may come back. */ | |
6549 | ||
6550 | static bool | |
6551 | aarch64_function_value_regno_p (const unsigned int regno) | |
6552 | { | |
6553 | /* Maximum of 16 bytes can be returned in the general registers. Examples | |
6554 | of 16-byte return values are: 128-bit integers and 16-byte small | |
6555 | structures (excluding homogeneous floating-point aggregates). */ | |
6556 | if (regno == R0_REGNUM || regno == R1_REGNUM) | |
6557 | return true; | |
6558 | ||
6559 | /* Up to four fp/simd registers can return a function value, e.g. a | |
6560 | homogeneous floating-point aggregate having four members. */ | |
6561 | if (regno >= V0_REGNUM && regno < V0_REGNUM + HA_MAX_NUM_FLDS) | |
d5726973 | 6562 | return TARGET_FLOAT; |
43e9d192 IB |
6563 | |
6564 | return false; | |
6565 | } | |
6566 | ||
38e62001 RS |
6567 | /* Subroutine for aarch64_return_in_memory for types that are not returned |
6568 | in SVE registers. */ | |
43e9d192 IB |
6569 | |
6570 | static bool | |
38e62001 | 6571 | aarch64_return_in_memory_1 (const_tree type) |
43e9d192 IB |
6572 | { |
6573 | HOST_WIDE_INT size; | |
ef4bddc2 | 6574 | machine_mode ag_mode; |
43e9d192 IB |
6575 | int count; |
6576 | ||
6577 | if (!AGGREGATE_TYPE_P (type) | |
6578 | && TREE_CODE (type) != COMPLEX_TYPE | |
6579 | && TREE_CODE (type) != VECTOR_TYPE) | |
6580 | /* Simple scalar types always returned in registers. */ | |
6581 | return false; | |
6582 | ||
56fe3ca3 RS |
6583 | if (aarch64_vfp_is_call_or_return_candidate (TYPE_MODE (type), type, |
6584 | &ag_mode, &count, NULL, false)) | |
43e9d192 IB |
6585 | return false; |
6586 | ||
6587 | /* Types larger than 2 registers returned in memory. */ | |
6588 | size = int_size_in_bytes (type); | |
6589 | return (size < 0 || size > 2 * UNITS_PER_WORD); | |
6590 | } | |
6591 | ||
38e62001 RS |
6592 | /* Implement TARGET_RETURN_IN_MEMORY. |
6593 | ||
6594 | If the type T of the result of a function is such that | |
6595 | void func (T arg) | |
6596 | would require that arg be passed as a value in a register (or set of | |
6597 | registers) according to the parameter passing rules, then the result | |
6598 | is returned in the same registers as would be used for such an | |
6599 | argument. */ | |
6600 | ||
6601 | static bool | |
6602 | aarch64_return_in_memory (const_tree type, const_tree fndecl ATTRIBUTE_UNUSED) | |
6603 | { | |
6604 | pure_scalable_type_info pst_info; | |
6605 | switch (pst_info.analyze (type)) | |
6606 | { | |
6607 | case pure_scalable_type_info::IS_PST: | |
6608 | return (pst_info.num_zr () > NUM_FP_ARG_REGS | |
6609 | || pst_info.num_pr () > NUM_PR_ARG_REGS); | |
6610 | ||
6611 | case pure_scalable_type_info::DOESNT_MATTER: | |
6612 | gcc_assert (aarch64_return_in_memory_1 (type)); | |
6613 | return true; | |
6614 | ||
6615 | case pure_scalable_type_info::NO_ABI_IDENTITY: | |
6616 | case pure_scalable_type_info::ISNT_PST: | |
6617 | return aarch64_return_in_memory_1 (type); | |
6618 | } | |
6619 | gcc_unreachable (); | |
6620 | } | |
6621 | ||
43e9d192 | 6622 | static bool |
ef4bddc2 | 6623 | aarch64_vfp_is_call_candidate (cumulative_args_t pcum_v, machine_mode mode, |
43e9d192 IB |
6624 | const_tree type, int *nregs) |
6625 | { | |
6626 | CUMULATIVE_ARGS *pcum = get_cumulative_args (pcum_v); | |
56fe3ca3 | 6627 | return aarch64_vfp_is_call_or_return_candidate (mode, type, |
43e9d192 | 6628 | &pcum->aapcs_vfp_rmode, |
56fe3ca3 | 6629 | nregs, NULL, pcum->silent_p); |
43e9d192 IB |
6630 | } |
6631 | ||
985b8393 | 6632 | /* Given MODE and TYPE of a function argument, return the alignment in |
43e9d192 | 6633 | bits. The idea is to suppress any stronger alignment requested by |
c590597c RE |
6634 | the user and opt for the natural alignment (specified in AAPCS64 \S |
6635 | 4.1). ABI_BREAK is set to true if the alignment was incorrectly | |
6636 | calculated in versions of GCC prior to GCC-9. This is a helper | |
6637 | function for local use only. */ | |
43e9d192 | 6638 | |
985b8393 | 6639 | static unsigned int |
c590597c | 6640 | aarch64_function_arg_alignment (machine_mode mode, const_tree type, |
49813aad | 6641 | unsigned int *abi_break) |
43e9d192 | 6642 | { |
49813aad | 6643 | *abi_break = 0; |
75d6cc81 | 6644 | if (!type) |
985b8393 | 6645 | return GET_MODE_ALIGNMENT (mode); |
2ec07fa6 | 6646 | |
75d6cc81 | 6647 | if (integer_zerop (TYPE_SIZE (type))) |
985b8393 | 6648 | return 0; |
43e9d192 | 6649 | |
75d6cc81 AL |
6650 | gcc_assert (TYPE_MODE (type) == mode); |
6651 | ||
6652 | if (!AGGREGATE_TYPE_P (type)) | |
985b8393 | 6653 | return TYPE_ALIGN (TYPE_MAIN_VARIANT (type)); |
75d6cc81 AL |
6654 | |
6655 | if (TREE_CODE (type) == ARRAY_TYPE) | |
985b8393 | 6656 | return TYPE_ALIGN (TREE_TYPE (type)); |
75d6cc81 | 6657 | |
985b8393 | 6658 | unsigned int alignment = 0; |
c590597c | 6659 | unsigned int bitfield_alignment = 0; |
75d6cc81 | 6660 | for (tree field = TYPE_FIELDS (type); field; field = DECL_CHAIN (field)) |
985b8393 | 6661 | if (TREE_CODE (field) == FIELD_DECL) |
c590597c | 6662 | { |
56fe3ca3 RS |
6663 | /* Note that we explicitly consider zero-sized fields here, |
6664 | even though they don't map to AAPCS64 machine types. | |
6665 | For example, in: | |
6666 | ||
6667 | struct __attribute__((aligned(8))) empty {}; | |
6668 | ||
6669 | struct s { | |
6670 | [[no_unique_address]] empty e; | |
6671 | int x; | |
6672 | }; | |
6673 | ||
6674 | "s" contains only one Fundamental Data Type (the int field) | |
6675 | but gains 8-byte alignment and size thanks to "e". */ | |
c590597c RE |
6676 | alignment = std::max (alignment, DECL_ALIGN (field)); |
6677 | if (DECL_BIT_FIELD_TYPE (field)) | |
6678 | bitfield_alignment | |
6679 | = std::max (bitfield_alignment, | |
6680 | TYPE_ALIGN (DECL_BIT_FIELD_TYPE (field))); | |
6681 | } | |
6682 | ||
6683 | if (bitfield_alignment > alignment) | |
6684 | { | |
49813aad | 6685 | *abi_break = alignment; |
c590597c RE |
6686 | return bitfield_alignment; |
6687 | } | |
43e9d192 | 6688 | |
985b8393 | 6689 | return alignment; |
43e9d192 IB |
6690 | } |
6691 | ||
6692 | /* Layout a function argument according to the AAPCS64 rules. The rule | |
6aa5370c RS |
6693 | numbers refer to the rule numbers in the AAPCS64. ORIG_MODE is the |
6694 | mode that was originally given to us by the target hook, whereas the | |
6695 | mode in ARG might be the result of replacing partial SVE modes with | |
6696 | the equivalent integer mode. */ | |
43e9d192 IB |
6697 | |
6698 | static void | |
38e62001 | 6699 | aarch64_layout_arg (cumulative_args_t pcum_v, const function_arg_info &arg) |
43e9d192 IB |
6700 | { |
6701 | CUMULATIVE_ARGS *pcum = get_cumulative_args (pcum_v); | |
c600df9a RS |
6702 | tree type = arg.type; |
6703 | machine_mode mode = arg.mode; | |
43e9d192 IB |
6704 | int ncrn, nvrn, nregs; |
6705 | bool allocate_ncrn, allocate_nvrn; | |
3abf17cf | 6706 | HOST_WIDE_INT size; |
49813aad | 6707 | unsigned int abi_break; |
43e9d192 IB |
6708 | |
6709 | /* We need to do this once per argument. */ | |
6710 | if (pcum->aapcs_arg_processed) | |
6711 | return; | |
6712 | ||
6713 | pcum->aapcs_arg_processed = true; | |
6714 | ||
38e62001 RS |
6715 | pure_scalable_type_info pst_info; |
6716 | if (type && pst_info.analyze_registers (type)) | |
c600df9a RS |
6717 | { |
6718 | /* The PCS says that it is invalid to pass an SVE value to an | |
6719 | unprototyped function. There is no ABI-defined location we | |
6720 | can return in this case, so we have no real choice but to raise | |
6721 | an error immediately, even though this is only a query function. */ | |
6722 | if (arg.named && pcum->pcs_variant != ARM_PCS_SVE) | |
6723 | { | |
6724 | gcc_assert (!pcum->silent_p); | |
6725 | error ("SVE type %qT cannot be passed to an unprototyped function", | |
6726 | arg.type); | |
6727 | /* Avoid repeating the message, and avoid tripping the assert | |
6728 | below. */ | |
6729 | pcum->pcs_variant = ARM_PCS_SVE; | |
6730 | } | |
6731 | ||
6732 | /* We would have converted the argument into pass-by-reference | |
6733 | form if it didn't fit in registers. */ | |
38e62001 RS |
6734 | pcum->aapcs_nextnvrn = pcum->aapcs_nvrn + pst_info.num_zr (); |
6735 | pcum->aapcs_nextnprn = pcum->aapcs_nprn + pst_info.num_pr (); | |
c600df9a RS |
6736 | gcc_assert (arg.named |
6737 | && pcum->pcs_variant == ARM_PCS_SVE | |
c600df9a RS |
6738 | && pcum->aapcs_nextnvrn <= NUM_FP_ARG_REGS |
6739 | && pcum->aapcs_nextnprn <= NUM_PR_ARG_REGS); | |
38e62001 RS |
6740 | pcum->aapcs_reg = pst_info.get_rtx (mode, V0_REGNUM + pcum->aapcs_nvrn, |
6741 | P0_REGNUM + pcum->aapcs_nprn); | |
c600df9a RS |
6742 | return; |
6743 | } | |
6744 | ||
38e62001 RS |
6745 | /* Generic vectors that map to full SVE modes with -msve-vector-bits=N |
6746 | are passed by reference, not by value. */ | |
6747 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
6748 | bool sve_p = (vec_flags & VEC_ANY_SVE); | |
6749 | if (sve_p) | |
6750 | /* Vector types can acquire a partial SVE mode using things like | |
6751 | __attribute__((vector_size(N))), and this is potentially useful. | |
6752 | However, the choice of mode doesn't affect the type's ABI | |
6753 | identity, so we should treat the types as though they had | |
6754 | the associated integer mode, just like they did before SVE | |
6755 | was introduced. | |
6756 | ||
6757 | We know that the vector must be 128 bits or smaller, | |
6758 | otherwise we'd have passed it in memory instead. */ | |
6759 | gcc_assert (type | |
6760 | && (aarch64_some_values_include_pst_objects_p (type) | |
6761 | || (vec_flags & VEC_PARTIAL))); | |
c600df9a | 6762 | |
3abf17cf | 6763 | /* Size in bytes, rounded to the nearest multiple of 8 bytes. */ |
6a70badb RS |
6764 | if (type) |
6765 | size = int_size_in_bytes (type); | |
6766 | else | |
6767 | /* No frontends can create types with variable-sized modes, so we | |
6768 | shouldn't be asked to pass or return them. */ | |
6769 | size = GET_MODE_SIZE (mode).to_constant (); | |
6770 | size = ROUND_UP (size, UNITS_PER_WORD); | |
3abf17cf | 6771 | |
43e9d192 IB |
6772 | allocate_ncrn = (type) ? !(FLOAT_TYPE_P (type)) : !FLOAT_MODE_P (mode); |
6773 | allocate_nvrn = aarch64_vfp_is_call_candidate (pcum_v, | |
6774 | mode, | |
6775 | type, | |
6776 | &nregs); | |
38e62001 | 6777 | gcc_assert (!sve_p || !allocate_nvrn); |
43e9d192 IB |
6778 | |
6779 | /* allocate_ncrn may be false-positive, but allocate_nvrn is quite reliable. | |
6780 | The following code thus handles passing by SIMD/FP registers first. */ | |
6781 | ||
6782 | nvrn = pcum->aapcs_nvrn; | |
6783 | ||
6784 | /* C1 - C5 for floating point, homogenous floating point aggregates (HFA) | |
6785 | and homogenous short-vector aggregates (HVA). */ | |
6786 | if (allocate_nvrn) | |
6787 | { | |
c600df9a | 6788 | if (!pcum->silent_p && !TARGET_FLOAT) |
fc29dfc9 | 6789 | aarch64_err_no_fpadvsimd (mode); |
261fb553 | 6790 | |
43e9d192 IB |
6791 | if (nvrn + nregs <= NUM_FP_ARG_REGS) |
6792 | { | |
6793 | pcum->aapcs_nextnvrn = nvrn + nregs; | |
6794 | if (!aarch64_composite_type_p (type, mode)) | |
6795 | { | |
6796 | gcc_assert (nregs == 1); | |
6797 | pcum->aapcs_reg = gen_rtx_REG (mode, V0_REGNUM + nvrn); | |
6798 | } | |
eb04ccf4 JW |
6799 | else if (aarch64_advsimd_full_struct_mode_p (mode) |
6800 | && known_eq (GET_MODE_SIZE (pcum->aapcs_vfp_rmode), 16)) | |
6801 | pcum->aapcs_reg = gen_rtx_REG (mode, V0_REGNUM + nvrn); | |
6802 | else if (aarch64_advsimd_partial_struct_mode_p (mode) | |
6803 | && known_eq (GET_MODE_SIZE (pcum->aapcs_vfp_rmode), 8)) | |
6804 | pcum->aapcs_reg = gen_rtx_REG (mode, V0_REGNUM + nvrn); | |
43e9d192 IB |
6805 | else |
6806 | { | |
6807 | rtx par; | |
6808 | int i; | |
6809 | par = gen_rtx_PARALLEL (mode, rtvec_alloc (nregs)); | |
6810 | for (i = 0; i < nregs; i++) | |
6811 | { | |
6812 | rtx tmp = gen_rtx_REG (pcum->aapcs_vfp_rmode, | |
6813 | V0_REGNUM + nvrn + i); | |
6a70badb RS |
6814 | rtx offset = gen_int_mode |
6815 | (i * GET_MODE_SIZE (pcum->aapcs_vfp_rmode), Pmode); | |
6816 | tmp = gen_rtx_EXPR_LIST (VOIDmode, tmp, offset); | |
43e9d192 IB |
6817 | XVECEXP (par, 0, i) = tmp; |
6818 | } | |
6819 | pcum->aapcs_reg = par; | |
6820 | } | |
6821 | return; | |
6822 | } | |
6823 | else | |
6824 | { | |
6825 | /* C.3 NSRN is set to 8. */ | |
6826 | pcum->aapcs_nextnvrn = NUM_FP_ARG_REGS; | |
6827 | goto on_stack; | |
6828 | } | |
6829 | } | |
6830 | ||
6831 | ncrn = pcum->aapcs_ncrn; | |
3abf17cf | 6832 | nregs = size / UNITS_PER_WORD; |
43e9d192 IB |
6833 | |
6834 | /* C6 - C9. though the sign and zero extension semantics are | |
6835 | handled elsewhere. This is the case where the argument fits | |
6836 | entirely general registers. */ | |
6837 | if (allocate_ncrn && (ncrn + nregs <= NUM_ARG_REGS)) | |
6838 | { | |
43e9d192 IB |
6839 | gcc_assert (nregs == 0 || nregs == 1 || nregs == 2); |
6840 | ||
6841 | /* C.8 if the argument has an alignment of 16 then the NGRN is | |
c590597c | 6842 | rounded up to the next even number. */ |
985b8393 JJ |
6843 | if (nregs == 2 |
6844 | && ncrn % 2 | |
2ec07fa6 | 6845 | /* The == 16 * BITS_PER_UNIT instead of >= 16 * BITS_PER_UNIT |
985b8393 | 6846 | comparison is there because for > 16 * BITS_PER_UNIT |
2ec07fa6 RR |
6847 | alignment nregs should be > 2 and therefore it should be |
6848 | passed by reference rather than value. */ | |
38e62001 | 6849 | && (aarch64_function_arg_alignment (mode, type, &abi_break) |
c590597c | 6850 | == 16 * BITS_PER_UNIT)) |
985b8393 | 6851 | { |
c590597c RE |
6852 | if (abi_break && warn_psabi && currently_expanding_gimple_stmt) |
6853 | inform (input_location, "parameter passing for argument of type " | |
6854 | "%qT changed in GCC 9.1", type); | |
985b8393 JJ |
6855 | ++ncrn; |
6856 | gcc_assert (ncrn + nregs <= NUM_ARG_REGS); | |
43e9d192 | 6857 | } |
2ec07fa6 | 6858 | |
38e62001 RS |
6859 | /* If an argument with an SVE mode needs to be shifted up to the |
6860 | high part of the register, treat it as though it had an integer mode. | |
6861 | Using the normal (parallel [...]) would suppress the shifting. */ | |
6862 | if (sve_p | |
6863 | && BYTES_BIG_ENDIAN | |
6864 | && maybe_ne (GET_MODE_SIZE (mode), nregs * UNITS_PER_WORD) | |
6865 | && aarch64_pad_reg_upward (mode, type, false)) | |
6866 | { | |
6867 | mode = int_mode_for_mode (mode).require (); | |
6868 | sve_p = false; | |
6869 | } | |
6870 | ||
43e9d192 | 6871 | /* NREGS can be 0 when e.g. an empty structure is to be passed. |
c590597c | 6872 | A reg is still generated for it, but the caller should be smart |
43e9d192 | 6873 | enough not to use it. */ |
38e62001 RS |
6874 | if (nregs == 0 |
6875 | || (nregs == 1 && !sve_p) | |
6876 | || GET_MODE_CLASS (mode) == MODE_INT) | |
2ec07fa6 | 6877 | pcum->aapcs_reg = gen_rtx_REG (mode, R0_REGNUM + ncrn); |
43e9d192 IB |
6878 | else |
6879 | { | |
6880 | rtx par; | |
6881 | int i; | |
6882 | ||
6883 | par = gen_rtx_PARALLEL (mode, rtvec_alloc (nregs)); | |
6884 | for (i = 0; i < nregs; i++) | |
6885 | { | |
38e62001 RS |
6886 | scalar_int_mode reg_mode = word_mode; |
6887 | if (nregs == 1) | |
6888 | reg_mode = int_mode_for_mode (mode).require (); | |
6889 | rtx tmp = gen_rtx_REG (reg_mode, R0_REGNUM + ncrn + i); | |
43e9d192 IB |
6890 | tmp = gen_rtx_EXPR_LIST (VOIDmode, tmp, |
6891 | GEN_INT (i * UNITS_PER_WORD)); | |
6892 | XVECEXP (par, 0, i) = tmp; | |
6893 | } | |
6894 | pcum->aapcs_reg = par; | |
6895 | } | |
6896 | ||
6897 | pcum->aapcs_nextncrn = ncrn + nregs; | |
6898 | return; | |
6899 | } | |
6900 | ||
6901 | /* C.11 */ | |
6902 | pcum->aapcs_nextncrn = NUM_ARG_REGS; | |
6903 | ||
6904 | /* The argument is passed on stack; record the needed number of words for | |
3abf17cf | 6905 | this argument and align the total size if necessary. */ |
43e9d192 | 6906 | on_stack: |
3abf17cf | 6907 | pcum->aapcs_stack_words = size / UNITS_PER_WORD; |
2ec07fa6 | 6908 | |
38e62001 | 6909 | if (aarch64_function_arg_alignment (mode, type, &abi_break) |
c590597c RE |
6910 | == 16 * BITS_PER_UNIT) |
6911 | { | |
6912 | int new_size = ROUND_UP (pcum->aapcs_stack_size, 16 / UNITS_PER_WORD); | |
6913 | if (pcum->aapcs_stack_size != new_size) | |
6914 | { | |
6915 | if (abi_break && warn_psabi && currently_expanding_gimple_stmt) | |
6916 | inform (input_location, "parameter passing for argument of type " | |
6917 | "%qT changed in GCC 9.1", type); | |
6918 | pcum->aapcs_stack_size = new_size; | |
6919 | } | |
6920 | } | |
43e9d192 IB |
6921 | return; |
6922 | } | |
6923 | ||
6924 | /* Implement TARGET_FUNCTION_ARG. */ | |
6925 | ||
6926 | static rtx | |
6783fdb7 | 6927 | aarch64_function_arg (cumulative_args_t pcum_v, const function_arg_info &arg) |
43e9d192 IB |
6928 | { |
6929 | CUMULATIVE_ARGS *pcum = get_cumulative_args (pcum_v); | |
08cc4d92 | 6930 | gcc_assert (pcum->pcs_variant == ARM_PCS_AAPCS64 |
c600df9a RS |
6931 | || pcum->pcs_variant == ARM_PCS_SIMD |
6932 | || pcum->pcs_variant == ARM_PCS_SVE); | |
43e9d192 | 6933 | |
6783fdb7 | 6934 | if (arg.end_marker_p ()) |
08cc4d92 | 6935 | return gen_int_mode (pcum->pcs_variant, DImode); |
43e9d192 | 6936 | |
38e62001 | 6937 | aarch64_layout_arg (pcum_v, arg); |
43e9d192 IB |
6938 | return pcum->aapcs_reg; |
6939 | } | |
6940 | ||
6941 | void | |
6942 | aarch64_init_cumulative_args (CUMULATIVE_ARGS *pcum, | |
08cc4d92 RS |
6943 | const_tree fntype, |
6944 | rtx libname ATTRIBUTE_UNUSED, | |
6945 | const_tree fndecl ATTRIBUTE_UNUSED, | |
c600df9a RS |
6946 | unsigned n_named ATTRIBUTE_UNUSED, |
6947 | bool silent_p) | |
43e9d192 IB |
6948 | { |
6949 | pcum->aapcs_ncrn = 0; | |
6950 | pcum->aapcs_nvrn = 0; | |
c600df9a | 6951 | pcum->aapcs_nprn = 0; |
43e9d192 IB |
6952 | pcum->aapcs_nextncrn = 0; |
6953 | pcum->aapcs_nextnvrn = 0; | |
c600df9a | 6954 | pcum->aapcs_nextnprn = 0; |
08cc4d92 RS |
6955 | if (fntype) |
6956 | pcum->pcs_variant = (arm_pcs) fntype_abi (fntype).id (); | |
6957 | else | |
6958 | pcum->pcs_variant = ARM_PCS_AAPCS64; | |
43e9d192 IB |
6959 | pcum->aapcs_reg = NULL_RTX; |
6960 | pcum->aapcs_arg_processed = false; | |
6961 | pcum->aapcs_stack_words = 0; | |
6962 | pcum->aapcs_stack_size = 0; | |
c600df9a | 6963 | pcum->silent_p = silent_p; |
43e9d192 | 6964 | |
c600df9a RS |
6965 | if (!silent_p |
6966 | && !TARGET_FLOAT | |
261fb553 AL |
6967 | && fntype && fntype != error_mark_node) |
6968 | { | |
6969 | const_tree type = TREE_TYPE (fntype); | |
6970 | machine_mode mode ATTRIBUTE_UNUSED; /* To pass pointer as argument. */ | |
6971 | int nregs ATTRIBUTE_UNUSED; /* Likewise. */ | |
6972 | if (aarch64_vfp_is_call_or_return_candidate (TYPE_MODE (type), type, | |
56fe3ca3 | 6973 | &mode, &nregs, NULL, false)) |
fc29dfc9 | 6974 | aarch64_err_no_fpadvsimd (TYPE_MODE (type)); |
261fb553 | 6975 | } |
c600df9a RS |
6976 | |
6977 | if (!silent_p | |
6978 | && !TARGET_SVE | |
6979 | && pcum->pcs_variant == ARM_PCS_SVE) | |
6980 | { | |
6981 | /* We can't gracefully recover at this point, so make this a | |
6982 | fatal error. */ | |
6983 | if (fndecl) | |
6984 | fatal_error (input_location, "%qE requires the SVE ISA extension", | |
6985 | fndecl); | |
6986 | else | |
6987 | fatal_error (input_location, "calls to functions of type %qT require" | |
6988 | " the SVE ISA extension", fntype); | |
6989 | } | |
43e9d192 IB |
6990 | } |
6991 | ||
6992 | static void | |
6993 | aarch64_function_arg_advance (cumulative_args_t pcum_v, | |
6930c98c | 6994 | const function_arg_info &arg) |
43e9d192 IB |
6995 | { |
6996 | CUMULATIVE_ARGS *pcum = get_cumulative_args (pcum_v); | |
08cc4d92 | 6997 | if (pcum->pcs_variant == ARM_PCS_AAPCS64 |
c600df9a RS |
6998 | || pcum->pcs_variant == ARM_PCS_SIMD |
6999 | || pcum->pcs_variant == ARM_PCS_SVE) | |
43e9d192 | 7000 | { |
38e62001 | 7001 | aarch64_layout_arg (pcum_v, arg); |
43e9d192 IB |
7002 | gcc_assert ((pcum->aapcs_reg != NULL_RTX) |
7003 | != (pcum->aapcs_stack_words != 0)); | |
7004 | pcum->aapcs_arg_processed = false; | |
7005 | pcum->aapcs_ncrn = pcum->aapcs_nextncrn; | |
7006 | pcum->aapcs_nvrn = pcum->aapcs_nextnvrn; | |
c600df9a | 7007 | pcum->aapcs_nprn = pcum->aapcs_nextnprn; |
43e9d192 IB |
7008 | pcum->aapcs_stack_size += pcum->aapcs_stack_words; |
7009 | pcum->aapcs_stack_words = 0; | |
7010 | pcum->aapcs_reg = NULL_RTX; | |
7011 | } | |
7012 | } | |
7013 | ||
7014 | bool | |
7015 | aarch64_function_arg_regno_p (unsigned regno) | |
7016 | { | |
7017 | return ((GP_REGNUM_P (regno) && regno < R0_REGNUM + NUM_ARG_REGS) | |
7018 | || (FP_REGNUM_P (regno) && regno < V0_REGNUM + NUM_FP_ARG_REGS)); | |
7019 | } | |
7020 | ||
7021 | /* Implement FUNCTION_ARG_BOUNDARY. Every parameter gets at least | |
7022 | PARM_BOUNDARY bits of alignment, but will be given anything up | |
7023 | to STACK_BOUNDARY bits if the type requires it. This makes sure | |
7024 | that both before and after the layout of each argument, the Next | |
7025 | Stacked Argument Address (NSAA) will have a minimum alignment of | |
7026 | 8 bytes. */ | |
7027 | ||
7028 | static unsigned int | |
ef4bddc2 | 7029 | aarch64_function_arg_boundary (machine_mode mode, const_tree type) |
43e9d192 | 7030 | { |
49813aad | 7031 | unsigned int abi_break; |
c590597c RE |
7032 | unsigned int alignment = aarch64_function_arg_alignment (mode, type, |
7033 | &abi_break); | |
49813aad | 7034 | alignment = MIN (MAX (alignment, PARM_BOUNDARY), STACK_BOUNDARY); |
c590597c | 7035 | if (abi_break & warn_psabi) |
49813aad JJ |
7036 | { |
7037 | abi_break = MIN (MAX (abi_break, PARM_BOUNDARY), STACK_BOUNDARY); | |
7038 | if (alignment != abi_break) | |
7039 | inform (input_location, "parameter passing for argument of type " | |
7040 | "%qT changed in GCC 9.1", type); | |
7041 | } | |
c590597c | 7042 | |
49813aad | 7043 | return alignment; |
43e9d192 IB |
7044 | } |
7045 | ||
43cacb12 RS |
7046 | /* Implement TARGET_GET_RAW_RESULT_MODE and TARGET_GET_RAW_ARG_MODE. */ |
7047 | ||
7048 | static fixed_size_mode | |
7049 | aarch64_get_reg_raw_mode (int regno) | |
7050 | { | |
7051 | if (TARGET_SVE && FP_REGNUM_P (regno)) | |
7052 | /* Don't use the SVE part of the register for __builtin_apply and | |
7053 | __builtin_return. The SVE registers aren't used by the normal PCS, | |
7054 | so using them there would be a waste of time. The PCS extensions | |
7055 | for SVE types are fundamentally incompatible with the | |
7056 | __builtin_return/__builtin_apply interface. */ | |
7057 | return as_a <fixed_size_mode> (V16QImode); | |
7058 | return default_get_reg_raw_mode (regno); | |
7059 | } | |
7060 | ||
76b0cbf8 | 7061 | /* Implement TARGET_FUNCTION_ARG_PADDING. |
43e9d192 IB |
7062 | |
7063 | Small aggregate types are placed in the lowest memory address. | |
7064 | ||
7065 | The related parameter passing rules are B.4, C.3, C.5 and C.14. */ | |
7066 | ||
76b0cbf8 RS |
7067 | static pad_direction |
7068 | aarch64_function_arg_padding (machine_mode mode, const_tree type) | |
43e9d192 IB |
7069 | { |
7070 | /* On little-endian targets, the least significant byte of every stack | |
7071 | argument is passed at the lowest byte address of the stack slot. */ | |
7072 | if (!BYTES_BIG_ENDIAN) | |
76b0cbf8 | 7073 | return PAD_UPWARD; |
43e9d192 | 7074 | |
00edcfbe | 7075 | /* Otherwise, integral, floating-point and pointer types are padded downward: |
43e9d192 IB |
7076 | the least significant byte of a stack argument is passed at the highest |
7077 | byte address of the stack slot. */ | |
7078 | if (type | |
00edcfbe YZ |
7079 | ? (INTEGRAL_TYPE_P (type) || SCALAR_FLOAT_TYPE_P (type) |
7080 | || POINTER_TYPE_P (type)) | |
43e9d192 | 7081 | : (SCALAR_INT_MODE_P (mode) || SCALAR_FLOAT_MODE_P (mode))) |
76b0cbf8 | 7082 | return PAD_DOWNWARD; |
43e9d192 IB |
7083 | |
7084 | /* Everything else padded upward, i.e. data in first byte of stack slot. */ | |
76b0cbf8 | 7085 | return PAD_UPWARD; |
43e9d192 IB |
7086 | } |
7087 | ||
7088 | /* Similarly, for use by BLOCK_REG_PADDING (MODE, TYPE, FIRST). | |
7089 | ||
7090 | It specifies padding for the last (may also be the only) | |
7091 | element of a block move between registers and memory. If | |
7092 | assuming the block is in the memory, padding upward means that | |
7093 | the last element is padded after its highest significant byte, | |
7094 | while in downward padding, the last element is padded at the | |
7095 | its least significant byte side. | |
7096 | ||
7097 | Small aggregates and small complex types are always padded | |
7098 | upwards. | |
7099 | ||
7100 | We don't need to worry about homogeneous floating-point or | |
7101 | short-vector aggregates; their move is not affected by the | |
7102 | padding direction determined here. Regardless of endianness, | |
7103 | each element of such an aggregate is put in the least | |
7104 | significant bits of a fp/simd register. | |
7105 | ||
7106 | Return !BYTES_BIG_ENDIAN if the least significant byte of the | |
7107 | register has useful data, and return the opposite if the most | |
7108 | significant byte does. */ | |
7109 | ||
7110 | bool | |
ef4bddc2 | 7111 | aarch64_pad_reg_upward (machine_mode mode, const_tree type, |
43e9d192 IB |
7112 | bool first ATTRIBUTE_UNUSED) |
7113 | { | |
7114 | ||
38e62001 RS |
7115 | /* Aside from pure scalable types, small composite types are always |
7116 | padded upward. */ | |
43e9d192 IB |
7117 | if (BYTES_BIG_ENDIAN && aarch64_composite_type_p (type, mode)) |
7118 | { | |
6a70badb RS |
7119 | HOST_WIDE_INT size; |
7120 | if (type) | |
7121 | size = int_size_in_bytes (type); | |
7122 | else | |
7123 | /* No frontends can create types with variable-sized modes, so we | |
7124 | shouldn't be asked to pass or return them. */ | |
7125 | size = GET_MODE_SIZE (mode).to_constant (); | |
43e9d192 | 7126 | if (size < 2 * UNITS_PER_WORD) |
38e62001 RS |
7127 | { |
7128 | pure_scalable_type_info pst_info; | |
7129 | if (pst_info.analyze_registers (type)) | |
7130 | return false; | |
7131 | return true; | |
7132 | } | |
43e9d192 IB |
7133 | } |
7134 | ||
7135 | /* Otherwise, use the default padding. */ | |
7136 | return !BYTES_BIG_ENDIAN; | |
7137 | } | |
7138 | ||
095a2d76 | 7139 | static scalar_int_mode |
43e9d192 IB |
7140 | aarch64_libgcc_cmp_return_mode (void) |
7141 | { | |
7142 | return SImode; | |
7143 | } | |
7144 | ||
a3eb8a52 EB |
7145 | #define PROBE_INTERVAL (1 << STACK_CHECK_PROBE_INTERVAL_EXP) |
7146 | ||
7147 | /* We use the 12-bit shifted immediate arithmetic instructions so values | |
7148 | must be multiple of (1 << 12), i.e. 4096. */ | |
7149 | #define ARITH_FACTOR 4096 | |
7150 | ||
7151 | #if (PROBE_INTERVAL % ARITH_FACTOR) != 0 | |
7152 | #error Cannot use simple address calculation for stack probing | |
7153 | #endif | |
7154 | ||
6a70badb | 7155 | /* Emit code to probe a range of stack addresses from FIRST to FIRST+POLY_SIZE, |
a3eb8a52 EB |
7156 | inclusive. These are offsets from the current stack pointer. */ |
7157 | ||
7158 | static void | |
6a70badb | 7159 | aarch64_emit_probe_stack_range (HOST_WIDE_INT first, poly_int64 poly_size) |
a3eb8a52 | 7160 | { |
6a70badb RS |
7161 | HOST_WIDE_INT size; |
7162 | if (!poly_size.is_constant (&size)) | |
7163 | { | |
7164 | sorry ("stack probes for SVE frames"); | |
7165 | return; | |
7166 | } | |
7167 | ||
5773855c | 7168 | rtx reg1 = gen_rtx_REG (Pmode, PROBE_STACK_FIRST_REGNUM); |
a3eb8a52 EB |
7169 | |
7170 | /* See the same assertion on PROBE_INTERVAL above. */ | |
7171 | gcc_assert ((first % ARITH_FACTOR) == 0); | |
7172 | ||
7173 | /* See if we have a constant small number of probes to generate. If so, | |
7174 | that's the easy case. */ | |
7175 | if (size <= PROBE_INTERVAL) | |
7176 | { | |
7177 | const HOST_WIDE_INT base = ROUND_UP (size, ARITH_FACTOR); | |
7178 | ||
7179 | emit_set_insn (reg1, | |
5f5c5e0f | 7180 | plus_constant (Pmode, |
a3eb8a52 | 7181 | stack_pointer_rtx, -(first + base))); |
5f5c5e0f | 7182 | emit_stack_probe (plus_constant (Pmode, reg1, base - size)); |
a3eb8a52 EB |
7183 | } |
7184 | ||
7185 | /* The run-time loop is made up of 8 insns in the generic case while the | |
7186 | compile-time loop is made up of 4+2*(n-2) insns for n # of intervals. */ | |
7187 | else if (size <= 4 * PROBE_INTERVAL) | |
7188 | { | |
7189 | HOST_WIDE_INT i, rem; | |
7190 | ||
7191 | emit_set_insn (reg1, | |
5f5c5e0f | 7192 | plus_constant (Pmode, |
a3eb8a52 EB |
7193 | stack_pointer_rtx, |
7194 | -(first + PROBE_INTERVAL))); | |
7195 | emit_stack_probe (reg1); | |
7196 | ||
7197 | /* Probe at FIRST + N * PROBE_INTERVAL for values of N from 2 until | |
7198 | it exceeds SIZE. If only two probes are needed, this will not | |
7199 | generate any code. Then probe at FIRST + SIZE. */ | |
7200 | for (i = 2 * PROBE_INTERVAL; i < size; i += PROBE_INTERVAL) | |
7201 | { | |
7202 | emit_set_insn (reg1, | |
5f5c5e0f | 7203 | plus_constant (Pmode, reg1, -PROBE_INTERVAL)); |
a3eb8a52 EB |
7204 | emit_stack_probe (reg1); |
7205 | } | |
7206 | ||
7207 | rem = size - (i - PROBE_INTERVAL); | |
7208 | if (rem > 256) | |
7209 | { | |
7210 | const HOST_WIDE_INT base = ROUND_UP (rem, ARITH_FACTOR); | |
7211 | ||
5f5c5e0f EB |
7212 | emit_set_insn (reg1, plus_constant (Pmode, reg1, -base)); |
7213 | emit_stack_probe (plus_constant (Pmode, reg1, base - rem)); | |
a3eb8a52 EB |
7214 | } |
7215 | else | |
5f5c5e0f | 7216 | emit_stack_probe (plus_constant (Pmode, reg1, -rem)); |
a3eb8a52 EB |
7217 | } |
7218 | ||
7219 | /* Otherwise, do the same as above, but in a loop. Note that we must be | |
7220 | extra careful with variables wrapping around because we might be at | |
7221 | the very top (or the very bottom) of the address space and we have | |
7222 | to be able to handle this case properly; in particular, we use an | |
7223 | equality test for the loop condition. */ | |
7224 | else | |
7225 | { | |
5773855c | 7226 | rtx reg2 = gen_rtx_REG (Pmode, PROBE_STACK_SECOND_REGNUM); |
a3eb8a52 EB |
7227 | |
7228 | /* Step 1: round SIZE to the previous multiple of the interval. */ | |
7229 | ||
7230 | HOST_WIDE_INT rounded_size = size & -PROBE_INTERVAL; | |
7231 | ||
7232 | ||
7233 | /* Step 2: compute initial and final value of the loop counter. */ | |
7234 | ||
7235 | /* TEST_ADDR = SP + FIRST. */ | |
7236 | emit_set_insn (reg1, | |
5f5c5e0f | 7237 | plus_constant (Pmode, stack_pointer_rtx, -first)); |
a3eb8a52 EB |
7238 | |
7239 | /* LAST_ADDR = SP + FIRST + ROUNDED_SIZE. */ | |
13f752b2 JL |
7240 | HOST_WIDE_INT adjustment = - (first + rounded_size); |
7241 | if (! aarch64_uimm12_shift (adjustment)) | |
7242 | { | |
7243 | aarch64_internal_mov_immediate (reg2, GEN_INT (adjustment), | |
7244 | true, Pmode); | |
7245 | emit_set_insn (reg2, gen_rtx_PLUS (Pmode, stack_pointer_rtx, reg2)); | |
7246 | } | |
7247 | else | |
8dd64cdf EB |
7248 | emit_set_insn (reg2, |
7249 | plus_constant (Pmode, stack_pointer_rtx, adjustment)); | |
7250 | ||
a3eb8a52 EB |
7251 | /* Step 3: the loop |
7252 | ||
7253 | do | |
7254 | { | |
7255 | TEST_ADDR = TEST_ADDR + PROBE_INTERVAL | |
7256 | probe at TEST_ADDR | |
7257 | } | |
7258 | while (TEST_ADDR != LAST_ADDR) | |
7259 | ||
7260 | probes at FIRST + N * PROBE_INTERVAL for values of N from 1 | |
7261 | until it is equal to ROUNDED_SIZE. */ | |
7262 | ||
5f5c5e0f | 7263 | emit_insn (gen_probe_stack_range (reg1, reg1, reg2)); |
a3eb8a52 EB |
7264 | |
7265 | ||
7266 | /* Step 4: probe at FIRST + SIZE if we cannot assert at compile-time | |
7267 | that SIZE is equal to ROUNDED_SIZE. */ | |
7268 | ||
7269 | if (size != rounded_size) | |
7270 | { | |
7271 | HOST_WIDE_INT rem = size - rounded_size; | |
7272 | ||
7273 | if (rem > 256) | |
7274 | { | |
7275 | const HOST_WIDE_INT base = ROUND_UP (rem, ARITH_FACTOR); | |
7276 | ||
5f5c5e0f EB |
7277 | emit_set_insn (reg2, plus_constant (Pmode, reg2, -base)); |
7278 | emit_stack_probe (plus_constant (Pmode, reg2, base - rem)); | |
a3eb8a52 EB |
7279 | } |
7280 | else | |
5f5c5e0f | 7281 | emit_stack_probe (plus_constant (Pmode, reg2, -rem)); |
a3eb8a52 EB |
7282 | } |
7283 | } | |
7284 | ||
7285 | /* Make sure nothing is scheduled before we are done. */ | |
7286 | emit_insn (gen_blockage ()); | |
7287 | } | |
7288 | ||
7289 | /* Probe a range of stack addresses from REG1 to REG2 inclusive. These are | |
7290 | absolute addresses. */ | |
7291 | ||
7292 | const char * | |
7293 | aarch64_output_probe_stack_range (rtx reg1, rtx reg2) | |
7294 | { | |
7295 | static int labelno = 0; | |
7296 | char loop_lab[32]; | |
7297 | rtx xops[2]; | |
7298 | ||
7299 | ASM_GENERATE_INTERNAL_LABEL (loop_lab, "LPSRL", labelno++); | |
7300 | ||
7301 | /* Loop. */ | |
7302 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, loop_lab); | |
7303 | ||
cd1bef27 | 7304 | HOST_WIDE_INT stack_clash_probe_interval |
028d4092 | 7305 | = 1 << param_stack_clash_protection_guard_size; |
cd1bef27 | 7306 | |
a3eb8a52 EB |
7307 | /* TEST_ADDR = TEST_ADDR + PROBE_INTERVAL. */ |
7308 | xops[0] = reg1; | |
cd1bef27 JL |
7309 | HOST_WIDE_INT interval; |
7310 | if (flag_stack_clash_protection) | |
7311 | interval = stack_clash_probe_interval; | |
7312 | else | |
7313 | interval = PROBE_INTERVAL; | |
7314 | ||
7315 | gcc_assert (aarch64_uimm12_shift (interval)); | |
7316 | xops[1] = GEN_INT (interval); | |
7317 | ||
a3eb8a52 EB |
7318 | output_asm_insn ("sub\t%0, %0, %1", xops); |
7319 | ||
cd1bef27 JL |
7320 | /* If doing stack clash protection then we probe up by the ABI specified |
7321 | amount. We do this because we're dropping full pages at a time in the | |
7322 | loop. But if we're doing non-stack clash probing, probe at SP 0. */ | |
7323 | if (flag_stack_clash_protection) | |
7324 | xops[1] = GEN_INT (STACK_CLASH_CALLER_GUARD); | |
7325 | else | |
7326 | xops[1] = CONST0_RTX (GET_MODE (xops[1])); | |
7327 | ||
7328 | /* Probe at TEST_ADDR. If we're inside the loop it is always safe to probe | |
7329 | by this amount for each iteration. */ | |
7330 | output_asm_insn ("str\txzr, [%0, %1]", xops); | |
a3eb8a52 EB |
7331 | |
7332 | /* Test if TEST_ADDR == LAST_ADDR. */ | |
7333 | xops[1] = reg2; | |
7334 | output_asm_insn ("cmp\t%0, %1", xops); | |
7335 | ||
7336 | /* Branch. */ | |
7337 | fputs ("\tb.ne\t", asm_out_file); | |
7338 | assemble_name_raw (asm_out_file, loop_lab); | |
7339 | fputc ('\n', asm_out_file); | |
7340 | ||
7341 | return ""; | |
7342 | } | |
7343 | ||
eb471ba3 TC |
7344 | /* Emit the probe loop for doing stack clash probes and stack adjustments for |
7345 | SVE. This emits probes from BASE to BASE - ADJUSTMENT based on a guard size | |
7346 | of GUARD_SIZE. When a probe is emitted it is done at most | |
7347 | MIN_PROBE_THRESHOLD bytes from the current BASE at an interval of | |
7348 | at most MIN_PROBE_THRESHOLD. By the end of this function | |
7349 | BASE = BASE - ADJUSTMENT. */ | |
7350 | ||
7351 | const char * | |
7352 | aarch64_output_probe_sve_stack_clash (rtx base, rtx adjustment, | |
7353 | rtx min_probe_threshold, rtx guard_size) | |
7354 | { | |
7355 | /* This function is not allowed to use any instruction generation function | |
7356 | like gen_ and friends. If you do you'll likely ICE during CFG validation, | |
7357 | so instead emit the code you want using output_asm_insn. */ | |
7358 | gcc_assert (flag_stack_clash_protection); | |
7359 | gcc_assert (CONST_INT_P (min_probe_threshold) && CONST_INT_P (guard_size)); | |
7360 | gcc_assert (INTVAL (guard_size) > INTVAL (min_probe_threshold)); | |
7361 | ||
7362 | /* The minimum required allocation before the residual requires probing. */ | |
7363 | HOST_WIDE_INT residual_probe_guard = INTVAL (min_probe_threshold); | |
7364 | ||
7365 | /* Clamp the value down to the nearest value that can be used with a cmp. */ | |
7366 | residual_probe_guard = aarch64_clamp_to_uimm12_shift (residual_probe_guard); | |
7367 | rtx probe_offset_value_rtx = gen_int_mode (residual_probe_guard, Pmode); | |
7368 | ||
7369 | gcc_assert (INTVAL (min_probe_threshold) >= residual_probe_guard); | |
7370 | gcc_assert (aarch64_uimm12_shift (residual_probe_guard)); | |
7371 | ||
7372 | static int labelno = 0; | |
7373 | char loop_start_lab[32]; | |
7374 | char loop_end_lab[32]; | |
7375 | rtx xops[2]; | |
7376 | ||
7377 | ASM_GENERATE_INTERNAL_LABEL (loop_start_lab, "SVLPSPL", labelno); | |
7378 | ASM_GENERATE_INTERNAL_LABEL (loop_end_lab, "SVLPEND", labelno++); | |
7379 | ||
7380 | /* Emit loop start label. */ | |
7381 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, loop_start_lab); | |
7382 | ||
7383 | /* ADJUSTMENT < RESIDUAL_PROBE_GUARD. */ | |
7384 | xops[0] = adjustment; | |
7385 | xops[1] = probe_offset_value_rtx; | |
7386 | output_asm_insn ("cmp\t%0, %1", xops); | |
7387 | ||
7388 | /* Branch to end if not enough adjustment to probe. */ | |
7389 | fputs ("\tb.lt\t", asm_out_file); | |
7390 | assemble_name_raw (asm_out_file, loop_end_lab); | |
7391 | fputc ('\n', asm_out_file); | |
7392 | ||
7393 | /* BASE = BASE - RESIDUAL_PROBE_GUARD. */ | |
7394 | xops[0] = base; | |
7395 | xops[1] = probe_offset_value_rtx; | |
7396 | output_asm_insn ("sub\t%0, %0, %1", xops); | |
7397 | ||
7398 | /* Probe at BASE. */ | |
7399 | xops[1] = const0_rtx; | |
7400 | output_asm_insn ("str\txzr, [%0, %1]", xops); | |
7401 | ||
7402 | /* ADJUSTMENT = ADJUSTMENT - RESIDUAL_PROBE_GUARD. */ | |
7403 | xops[0] = adjustment; | |
7404 | xops[1] = probe_offset_value_rtx; | |
7405 | output_asm_insn ("sub\t%0, %0, %1", xops); | |
7406 | ||
7407 | /* Branch to start if still more bytes to allocate. */ | |
7408 | fputs ("\tb\t", asm_out_file); | |
7409 | assemble_name_raw (asm_out_file, loop_start_lab); | |
7410 | fputc ('\n', asm_out_file); | |
7411 | ||
7412 | /* No probe leave. */ | |
7413 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, loop_end_lab); | |
7414 | ||
7415 | /* BASE = BASE - ADJUSTMENT. */ | |
7416 | xops[0] = base; | |
7417 | xops[1] = adjustment; | |
7418 | output_asm_insn ("sub\t%0, %0, %1", xops); | |
7419 | return ""; | |
7420 | } | |
7421 | ||
d6cb6d6a WD |
7422 | /* Determine whether a frame chain needs to be generated. */ |
7423 | static bool | |
7424 | aarch64_needs_frame_chain (void) | |
7425 | { | |
7426 | /* Force a frame chain for EH returns so the return address is at FP+8. */ | |
7427 | if (frame_pointer_needed || crtl->calls_eh_return) | |
7428 | return true; | |
7429 | ||
7430 | /* A leaf function cannot have calls or write LR. */ | |
7431 | bool is_leaf = crtl->is_leaf && !df_regs_ever_live_p (LR_REGNUM); | |
7432 | ||
7433 | /* Don't use a frame chain in leaf functions if leaf frame pointers | |
7434 | are disabled. */ | |
7435 | if (flag_omit_leaf_frame_pointer && is_leaf) | |
7436 | return false; | |
7437 | ||
7438 | return aarch64_use_frame_pointer; | |
7439 | } | |
7440 | ||
43e9d192 IB |
7441 | /* Mark the registers that need to be saved by the callee and calculate |
7442 | the size of the callee-saved registers area and frame record (both FP | |
33a2e348 | 7443 | and LR may be omitted). */ |
43e9d192 IB |
7444 | static void |
7445 | aarch64_layout_frame (void) | |
7446 | { | |
c600df9a | 7447 | poly_int64 offset = 0; |
4b0685d9 | 7448 | int regno, last_fp_reg = INVALID_REGNUM; |
c600df9a RS |
7449 | machine_mode vector_save_mode = aarch64_reg_save_mode (V8_REGNUM); |
7450 | poly_int64 vector_save_size = GET_MODE_SIZE (vector_save_mode); | |
7451 | bool frame_related_fp_reg_p = false; | |
ab43763e | 7452 | aarch64_frame &frame = cfun->machine->frame; |
43e9d192 | 7453 | |
ab43763e | 7454 | frame.emit_frame_chain = aarch64_needs_frame_chain (); |
7040939b | 7455 | |
8c6e3b23 TC |
7456 | /* Adjust the outgoing arguments size if required. Keep it in sync with what |
7457 | the mid-end is doing. */ | |
7458 | crtl->outgoing_args_size = STACK_DYNAMIC_OFFSET (cfun); | |
7459 | ||
97826595 MS |
7460 | #define SLOT_NOT_REQUIRED (-2) |
7461 | #define SLOT_REQUIRED (-1) | |
7462 | ||
ab43763e RS |
7463 | frame.wb_candidate1 = INVALID_REGNUM; |
7464 | frame.wb_candidate2 = INVALID_REGNUM; | |
c600df9a | 7465 | frame.spare_pred_reg = INVALID_REGNUM; |
363ffa50 | 7466 | |
43e9d192 | 7467 | /* First mark all the registers that really need to be saved... */ |
c600df9a | 7468 | for (regno = 0; regno <= LAST_SAVED_REGNUM; regno++) |
ab43763e | 7469 | frame.reg_offset[regno] = SLOT_NOT_REQUIRED; |
43e9d192 IB |
7470 | |
7471 | /* ... that includes the eh data registers (if needed)... */ | |
7472 | if (crtl->calls_eh_return) | |
7473 | for (regno = 0; EH_RETURN_DATA_REGNO (regno) != INVALID_REGNUM; regno++) | |
ab43763e | 7474 | frame.reg_offset[EH_RETURN_DATA_REGNO (regno)] = SLOT_REQUIRED; |
43e9d192 IB |
7475 | |
7476 | /* ... and any callee saved register that dataflow says is live. */ | |
7477 | for (regno = R0_REGNUM; regno <= R30_REGNUM; regno++) | |
7478 | if (df_regs_ever_live_p (regno) | |
dcdd0f05 | 7479 | && !fixed_regs[regno] |
1c923b60 | 7480 | && (regno == R30_REGNUM |
dcdd0f05 | 7481 | || !crtl->abi->clobbers_full_reg_p (regno))) |
ab43763e | 7482 | frame.reg_offset[regno] = SLOT_REQUIRED; |
43e9d192 IB |
7483 | |
7484 | for (regno = V0_REGNUM; regno <= V31_REGNUM; regno++) | |
7485 | if (df_regs_ever_live_p (regno) | |
dcdd0f05 RS |
7486 | && !fixed_regs[regno] |
7487 | && !crtl->abi->clobbers_full_reg_p (regno)) | |
4b0685d9 | 7488 | { |
ab43763e | 7489 | frame.reg_offset[regno] = SLOT_REQUIRED; |
4b0685d9 | 7490 | last_fp_reg = regno; |
c600df9a RS |
7491 | if (aarch64_emit_cfi_for_reg_p (regno)) |
7492 | frame_related_fp_reg_p = true; | |
4b0685d9 | 7493 | } |
43e9d192 | 7494 | |
c600df9a RS |
7495 | /* Big-endian SVE frames need a spare predicate register in order |
7496 | to save Z8-Z15. Decide which register they should use. Prefer | |
7497 | an unused argument register if possible, so that we don't force P4 | |
7498 | to be saved unnecessarily. */ | |
7499 | if (frame_related_fp_reg_p | |
7500 | && crtl->abi->id () == ARM_PCS_SVE | |
7501 | && BYTES_BIG_ENDIAN) | |
7502 | { | |
7503 | bitmap live1 = df_get_live_out (ENTRY_BLOCK_PTR_FOR_FN (cfun)); | |
7504 | bitmap live2 = df_get_live_in (EXIT_BLOCK_PTR_FOR_FN (cfun)); | |
7505 | for (regno = P0_REGNUM; regno <= P7_REGNUM; regno++) | |
7506 | if (!bitmap_bit_p (live1, regno) && !bitmap_bit_p (live2, regno)) | |
7507 | break; | |
7508 | gcc_assert (regno <= P7_REGNUM); | |
7509 | frame.spare_pred_reg = regno; | |
7510 | df_set_regs_ever_live (regno, true); | |
7511 | } | |
7512 | ||
7513 | for (regno = P0_REGNUM; regno <= P15_REGNUM; regno++) | |
7514 | if (df_regs_ever_live_p (regno) | |
7515 | && !fixed_regs[regno] | |
7516 | && !crtl->abi->clobbers_full_reg_p (regno)) | |
7517 | frame.reg_offset[regno] = SLOT_REQUIRED; | |
7518 | ||
d6430e3c TC |
7519 | /* With stack-clash, LR must be saved in non-leaf functions. The saving of |
7520 | LR counts as an implicit probe which allows us to maintain the invariant | |
7521 | described in the comment at expand_prologue. */ | |
c600df9a RS |
7522 | gcc_assert (crtl->is_leaf |
7523 | || maybe_ne (frame.reg_offset[R30_REGNUM], SLOT_NOT_REQUIRED)); | |
7524 | ||
7525 | /* Now assign stack slots for the registers. Start with the predicate | |
7526 | registers, since predicate LDR and STR have a relatively small | |
7527 | offset range. These saves happen below the hard frame pointer. */ | |
7528 | for (regno = P0_REGNUM; regno <= P15_REGNUM; regno++) | |
7529 | if (known_eq (frame.reg_offset[regno], SLOT_REQUIRED)) | |
7530 | { | |
7531 | frame.reg_offset[regno] = offset; | |
7532 | offset += BYTES_PER_SVE_PRED; | |
7533 | } | |
7534 | ||
c600df9a RS |
7535 | if (maybe_ne (offset, 0)) |
7536 | { | |
cb26919c RS |
7537 | /* If we have any vector registers to save above the predicate registers, |
7538 | the offset of the vector register save slots need to be a multiple | |
7539 | of the vector size. This lets us use the immediate forms of LDR/STR | |
7540 | (or LD1/ST1 for big-endian). | |
7541 | ||
7542 | A vector register is 8 times the size of a predicate register, | |
7543 | and we need to save a maximum of 12 predicate registers, so the | |
7544 | first vector register will be at either #1, MUL VL or #2, MUL VL. | |
7545 | ||
7546 | If we don't have any vector registers to save, and we know how | |
7547 | big the predicate save area is, we can just round it up to the | |
7548 | next 16-byte boundary. */ | |
7549 | if (last_fp_reg == (int) INVALID_REGNUM && offset.is_constant ()) | |
7550 | offset = aligned_upper_bound (offset, STACK_BOUNDARY / BITS_PER_UNIT); | |
7551 | else | |
7552 | { | |
7553 | if (known_le (offset, vector_save_size)) | |
7554 | offset = vector_save_size; | |
7555 | else if (known_le (offset, vector_save_size * 2)) | |
7556 | offset = vector_save_size * 2; | |
7557 | else | |
7558 | gcc_unreachable (); | |
7559 | } | |
c600df9a RS |
7560 | } |
7561 | ||
7562 | /* If we need to save any SVE vector registers, add them next. */ | |
7563 | if (last_fp_reg != (int) INVALID_REGNUM && crtl->abi->id () == ARM_PCS_SVE) | |
7564 | for (regno = V0_REGNUM; regno <= V31_REGNUM; regno++) | |
7565 | if (known_eq (frame.reg_offset[regno], SLOT_REQUIRED)) | |
7566 | { | |
7567 | frame.reg_offset[regno] = offset; | |
7568 | offset += vector_save_size; | |
7569 | } | |
7570 | ||
7571 | /* OFFSET is now the offset of the hard frame pointer from the bottom | |
7572 | of the callee save area. */ | |
7573 | bool saves_below_hard_fp_p = maybe_ne (offset, 0); | |
7574 | frame.below_hard_fp_saved_regs_size = offset; | |
ab43763e | 7575 | if (frame.emit_frame_chain) |
43e9d192 | 7576 | { |
2e1cdae5 | 7577 | /* FP and LR are placed in the linkage record. */ |
c600df9a | 7578 | frame.reg_offset[R29_REGNUM] = offset; |
ab43763e | 7579 | frame.wb_candidate1 = R29_REGNUM; |
c600df9a | 7580 | frame.reg_offset[R30_REGNUM] = offset + UNITS_PER_WORD; |
ab43763e | 7581 | frame.wb_candidate2 = R30_REGNUM; |
c600df9a | 7582 | offset += 2 * UNITS_PER_WORD; |
1f7bffd0 | 7583 | } |
43e9d192 | 7584 | |
2e1cdae5 | 7585 | for (regno = R0_REGNUM; regno <= R30_REGNUM; regno++) |
c600df9a | 7586 | if (known_eq (frame.reg_offset[regno], SLOT_REQUIRED)) |
43e9d192 | 7587 | { |
ab43763e RS |
7588 | frame.reg_offset[regno] = offset; |
7589 | if (frame.wb_candidate1 == INVALID_REGNUM) | |
7590 | frame.wb_candidate1 = regno; | |
7591 | else if (frame.wb_candidate2 == INVALID_REGNUM) | |
7592 | frame.wb_candidate2 = regno; | |
43e9d192 IB |
7593 | offset += UNITS_PER_WORD; |
7594 | } | |
7595 | ||
c600df9a RS |
7596 | poly_int64 max_int_offset = offset; |
7597 | offset = aligned_upper_bound (offset, STACK_BOUNDARY / BITS_PER_UNIT); | |
7598 | bool has_align_gap = maybe_ne (offset, max_int_offset); | |
4b0685d9 | 7599 | |
43e9d192 | 7600 | for (regno = V0_REGNUM; regno <= V31_REGNUM; regno++) |
c600df9a | 7601 | if (known_eq (frame.reg_offset[regno], SLOT_REQUIRED)) |
43e9d192 | 7602 | { |
4b0685d9 WD |
7603 | /* If there is an alignment gap between integer and fp callee-saves, |
7604 | allocate the last fp register to it if possible. */ | |
a0d0b980 SE |
7605 | if (regno == last_fp_reg |
7606 | && has_align_gap | |
c600df9a RS |
7607 | && known_eq (vector_save_size, 8) |
7608 | && multiple_p (offset, 16)) | |
4b0685d9 | 7609 | { |
ab43763e | 7610 | frame.reg_offset[regno] = max_int_offset; |
4b0685d9 WD |
7611 | break; |
7612 | } | |
7613 | ||
ab43763e RS |
7614 | frame.reg_offset[regno] = offset; |
7615 | if (frame.wb_candidate1 == INVALID_REGNUM) | |
7616 | frame.wb_candidate1 = regno; | |
7617 | else if (frame.wb_candidate2 == INVALID_REGNUM | |
7618 | && frame.wb_candidate1 >= V0_REGNUM) | |
7619 | frame.wb_candidate2 = regno; | |
c600df9a | 7620 | offset += vector_save_size; |
43e9d192 IB |
7621 | } |
7622 | ||
c600df9a | 7623 | offset = aligned_upper_bound (offset, STACK_BOUNDARY / BITS_PER_UNIT); |
43e9d192 | 7624 | |
ab43763e | 7625 | frame.saved_regs_size = offset; |
1c960e02 | 7626 | |
c600df9a | 7627 | poly_int64 varargs_and_saved_regs_size = offset + frame.saved_varargs_size; |
71bfb77a | 7628 | |
c600df9a | 7629 | poly_int64 above_outgoing_args |
6a70badb RS |
7630 | = aligned_upper_bound (varargs_and_saved_regs_size |
7631 | + get_frame_size (), | |
7632 | STACK_BOUNDARY / BITS_PER_UNIT); | |
1c960e02 | 7633 | |
c600df9a RS |
7634 | frame.hard_fp_offset |
7635 | = above_outgoing_args - frame.below_hard_fp_saved_regs_size; | |
7636 | ||
6a70badb RS |
7637 | /* Both these values are already aligned. */ |
7638 | gcc_assert (multiple_p (crtl->outgoing_args_size, | |
7639 | STACK_BOUNDARY / BITS_PER_UNIT)); | |
c600df9a | 7640 | frame.frame_size = above_outgoing_args + crtl->outgoing_args_size; |
1c960e02 | 7641 | |
ab43763e | 7642 | frame.locals_offset = frame.saved_varargs_size; |
71bfb77a | 7643 | |
ab43763e RS |
7644 | frame.initial_adjust = 0; |
7645 | frame.final_adjust = 0; | |
7646 | frame.callee_adjust = 0; | |
c600df9a | 7647 | frame.sve_callee_adjust = 0; |
ab43763e | 7648 | frame.callee_offset = 0; |
71bfb77a WD |
7649 | |
7650 | HOST_WIDE_INT max_push_offset = 0; | |
ab43763e | 7651 | if (frame.wb_candidate2 != INVALID_REGNUM) |
71bfb77a | 7652 | max_push_offset = 512; |
ab43763e | 7653 | else if (frame.wb_candidate1 != INVALID_REGNUM) |
71bfb77a WD |
7654 | max_push_offset = 256; |
7655 | ||
9b17a646 | 7656 | HOST_WIDE_INT const_size, const_outgoing_args_size, const_fp_offset; |
c600df9a | 7657 | HOST_WIDE_INT const_saved_regs_size; |
ab43763e | 7658 | if (frame.frame_size.is_constant (&const_size) |
6a70badb | 7659 | && const_size < max_push_offset |
c600df9a | 7660 | && known_eq (frame.hard_fp_offset, const_size)) |
71bfb77a WD |
7661 | { |
7662 | /* Simple, small frame with no outgoing arguments: | |
c600df9a | 7663 | |
71bfb77a WD |
7664 | stp reg1, reg2, [sp, -frame_size]! |
7665 | stp reg3, reg4, [sp, 16] */ | |
ab43763e | 7666 | frame.callee_adjust = const_size; |
71bfb77a | 7667 | } |
9b17a646 | 7668 | else if (crtl->outgoing_args_size.is_constant (&const_outgoing_args_size) |
c600df9a RS |
7669 | && frame.saved_regs_size.is_constant (&const_saved_regs_size) |
7670 | && const_outgoing_args_size + const_saved_regs_size < 512 | |
7671 | /* We could handle this case even with outgoing args, provided | |
7672 | that the number of args left us with valid offsets for all | |
7673 | predicate and vector save slots. It's such a rare case that | |
7674 | it hardly seems worth the effort though. */ | |
7675 | && (!saves_below_hard_fp_p || const_outgoing_args_size == 0) | |
71bfb77a | 7676 | && !(cfun->calls_alloca |
9b17a646 RS |
7677 | && frame.hard_fp_offset.is_constant (&const_fp_offset) |
7678 | && const_fp_offset < max_push_offset)) | |
71bfb77a WD |
7679 | { |
7680 | /* Frame with small outgoing arguments: | |
c600df9a | 7681 | |
71bfb77a WD |
7682 | sub sp, sp, frame_size |
7683 | stp reg1, reg2, [sp, outgoing_args_size] | |
7684 | stp reg3, reg4, [sp, outgoing_args_size + 16] */ | |
ab43763e | 7685 | frame.initial_adjust = frame.frame_size; |
9b17a646 | 7686 | frame.callee_offset = const_outgoing_args_size; |
71bfb77a | 7687 | } |
c600df9a RS |
7688 | else if (saves_below_hard_fp_p |
7689 | && known_eq (frame.saved_regs_size, | |
7690 | frame.below_hard_fp_saved_regs_size)) | |
7691 | { | |
7692 | /* Frame in which all saves are SVE saves: | |
7693 | ||
7694 | sub sp, sp, hard_fp_offset + below_hard_fp_saved_regs_size | |
7695 | save SVE registers relative to SP | |
7696 | sub sp, sp, outgoing_args_size */ | |
7697 | frame.initial_adjust = (frame.hard_fp_offset | |
7698 | + frame.below_hard_fp_saved_regs_size); | |
7699 | frame.final_adjust = crtl->outgoing_args_size; | |
7700 | } | |
ab43763e | 7701 | else if (frame.hard_fp_offset.is_constant (&const_fp_offset) |
6a70badb | 7702 | && const_fp_offset < max_push_offset) |
71bfb77a | 7703 | { |
c600df9a RS |
7704 | /* Frame with large outgoing arguments or SVE saves, but with |
7705 | a small local area: | |
7706 | ||
71bfb77a WD |
7707 | stp reg1, reg2, [sp, -hard_fp_offset]! |
7708 | stp reg3, reg4, [sp, 16] | |
c600df9a RS |
7709 | [sub sp, sp, below_hard_fp_saved_regs_size] |
7710 | [save SVE registers relative to SP] | |
71bfb77a | 7711 | sub sp, sp, outgoing_args_size */ |
ab43763e | 7712 | frame.callee_adjust = const_fp_offset; |
c600df9a | 7713 | frame.sve_callee_adjust = frame.below_hard_fp_saved_regs_size; |
8e66b377 | 7714 | frame.final_adjust = crtl->outgoing_args_size; |
71bfb77a | 7715 | } |
71bfb77a WD |
7716 | else |
7717 | { | |
c600df9a RS |
7718 | /* Frame with large local area and outgoing arguments or SVE saves, |
7719 | using frame pointer: | |
7720 | ||
71bfb77a WD |
7721 | sub sp, sp, hard_fp_offset |
7722 | stp x29, x30, [sp, 0] | |
7723 | add x29, sp, 0 | |
7724 | stp reg3, reg4, [sp, 16] | |
c600df9a RS |
7725 | [sub sp, sp, below_hard_fp_saved_regs_size] |
7726 | [save SVE registers relative to SP] | |
71bfb77a | 7727 | sub sp, sp, outgoing_args_size */ |
ab43763e | 7728 | frame.initial_adjust = frame.hard_fp_offset; |
c600df9a | 7729 | frame.sve_callee_adjust = frame.below_hard_fp_saved_regs_size; |
8e66b377 | 7730 | frame.final_adjust = crtl->outgoing_args_size; |
71bfb77a WD |
7731 | } |
7732 | ||
8e66b377 RS |
7733 | /* Make sure the individual adjustments add up to the full frame size. */ |
7734 | gcc_assert (known_eq (frame.initial_adjust | |
7735 | + frame.callee_adjust | |
c600df9a | 7736 | + frame.sve_callee_adjust |
8e66b377 RS |
7737 | + frame.final_adjust, frame.frame_size)); |
7738 | ||
59a3d73d RS |
7739 | if (!frame.emit_frame_chain && frame.callee_adjust == 0) |
7740 | { | |
7741 | /* We've decided not to associate any register saves with the initial | |
7742 | stack allocation. */ | |
7743 | frame.wb_candidate1 = INVALID_REGNUM; | |
7744 | frame.wb_candidate2 = INVALID_REGNUM; | |
7745 | } | |
7746 | ||
ab43763e | 7747 | frame.laid_out = true; |
43e9d192 IB |
7748 | } |
7749 | ||
04ddfe06 KT |
7750 | /* Return true if the register REGNO is saved on entry to |
7751 | the current function. */ | |
7752 | ||
43e9d192 IB |
7753 | static bool |
7754 | aarch64_register_saved_on_entry (int regno) | |
7755 | { | |
c600df9a | 7756 | return known_ge (cfun->machine->frame.reg_offset[regno], 0); |
43e9d192 IB |
7757 | } |
7758 | ||
04ddfe06 KT |
7759 | /* Return the next register up from REGNO up to LIMIT for the callee |
7760 | to save. */ | |
7761 | ||
64dedd72 JW |
7762 | static unsigned |
7763 | aarch64_next_callee_save (unsigned regno, unsigned limit) | |
7764 | { | |
7765 | while (regno <= limit && !aarch64_register_saved_on_entry (regno)) | |
7766 | regno ++; | |
7767 | return regno; | |
7768 | } | |
43e9d192 | 7769 | |
04ddfe06 KT |
7770 | /* Push the register number REGNO of mode MODE to the stack with write-back |
7771 | adjusting the stack by ADJUSTMENT. */ | |
7772 | ||
c5e1f66e | 7773 | static void |
ef4bddc2 | 7774 | aarch64_pushwb_single_reg (machine_mode mode, unsigned regno, |
c5e1f66e JW |
7775 | HOST_WIDE_INT adjustment) |
7776 | { | |
7777 | rtx base_rtx = stack_pointer_rtx; | |
7778 | rtx insn, reg, mem; | |
7779 | ||
7780 | reg = gen_rtx_REG (mode, regno); | |
7781 | mem = gen_rtx_PRE_MODIFY (Pmode, base_rtx, | |
7782 | plus_constant (Pmode, base_rtx, -adjustment)); | |
30079dde | 7783 | mem = gen_frame_mem (mode, mem); |
c5e1f66e JW |
7784 | |
7785 | insn = emit_move_insn (mem, reg); | |
7786 | RTX_FRAME_RELATED_P (insn) = 1; | |
7787 | } | |
7788 | ||
04ddfe06 KT |
7789 | /* Generate and return an instruction to store the pair of registers |
7790 | REG and REG2 of mode MODE to location BASE with write-back adjusting | |
7791 | the stack location BASE by ADJUSTMENT. */ | |
7792 | ||
80c11907 | 7793 | static rtx |
ef4bddc2 | 7794 | aarch64_gen_storewb_pair (machine_mode mode, rtx base, rtx reg, rtx reg2, |
80c11907 JW |
7795 | HOST_WIDE_INT adjustment) |
7796 | { | |
7797 | switch (mode) | |
7798 | { | |
4e10a5a7 | 7799 | case E_DImode: |
80c11907 JW |
7800 | return gen_storewb_pairdi_di (base, base, reg, reg2, |
7801 | GEN_INT (-adjustment), | |
7802 | GEN_INT (UNITS_PER_WORD - adjustment)); | |
4e10a5a7 | 7803 | case E_DFmode: |
80c11907 JW |
7804 | return gen_storewb_pairdf_di (base, base, reg, reg2, |
7805 | GEN_INT (-adjustment), | |
7806 | GEN_INT (UNITS_PER_WORD - adjustment)); | |
a0d0b980 SE |
7807 | case E_TFmode: |
7808 | return gen_storewb_pairtf_di (base, base, reg, reg2, | |
7809 | GEN_INT (-adjustment), | |
7810 | GEN_INT (UNITS_PER_VREG - adjustment)); | |
80c11907 JW |
7811 | default: |
7812 | gcc_unreachable (); | |
7813 | } | |
7814 | } | |
7815 | ||
04ddfe06 KT |
7816 | /* Push registers numbered REGNO1 and REGNO2 to the stack, adjusting the |
7817 | stack pointer by ADJUSTMENT. */ | |
7818 | ||
80c11907 | 7819 | static void |
89ac681e | 7820 | aarch64_push_regs (unsigned regno1, unsigned regno2, HOST_WIDE_INT adjustment) |
80c11907 | 7821 | { |
5d8a22a5 | 7822 | rtx_insn *insn; |
c600df9a | 7823 | machine_mode mode = aarch64_reg_save_mode (regno1); |
89ac681e | 7824 | |
71bfb77a | 7825 | if (regno2 == INVALID_REGNUM) |
89ac681e WD |
7826 | return aarch64_pushwb_single_reg (mode, regno1, adjustment); |
7827 | ||
80c11907 JW |
7828 | rtx reg1 = gen_rtx_REG (mode, regno1); |
7829 | rtx reg2 = gen_rtx_REG (mode, regno2); | |
7830 | ||
7831 | insn = emit_insn (aarch64_gen_storewb_pair (mode, stack_pointer_rtx, reg1, | |
7832 | reg2, adjustment)); | |
7833 | RTX_FRAME_RELATED_P (XVECEXP (PATTERN (insn), 0, 2)) = 1; | |
80c11907 JW |
7834 | RTX_FRAME_RELATED_P (XVECEXP (PATTERN (insn), 0, 1)) = 1; |
7835 | RTX_FRAME_RELATED_P (insn) = 1; | |
7836 | } | |
7837 | ||
04ddfe06 KT |
7838 | /* Load the pair of register REG, REG2 of mode MODE from stack location BASE, |
7839 | adjusting it by ADJUSTMENT afterwards. */ | |
7840 | ||
159313d9 | 7841 | static rtx |
ef4bddc2 | 7842 | aarch64_gen_loadwb_pair (machine_mode mode, rtx base, rtx reg, rtx reg2, |
159313d9 JW |
7843 | HOST_WIDE_INT adjustment) |
7844 | { | |
7845 | switch (mode) | |
7846 | { | |
4e10a5a7 | 7847 | case E_DImode: |
159313d9 | 7848 | return gen_loadwb_pairdi_di (base, base, reg, reg2, GEN_INT (adjustment), |
3e322b3f | 7849 | GEN_INT (UNITS_PER_WORD)); |
4e10a5a7 | 7850 | case E_DFmode: |
159313d9 | 7851 | return gen_loadwb_pairdf_di (base, base, reg, reg2, GEN_INT (adjustment), |
3e322b3f | 7852 | GEN_INT (UNITS_PER_WORD)); |
a0d0b980 SE |
7853 | case E_TFmode: |
7854 | return gen_loadwb_pairtf_di (base, base, reg, reg2, GEN_INT (adjustment), | |
7855 | GEN_INT (UNITS_PER_VREG)); | |
159313d9 JW |
7856 | default: |
7857 | gcc_unreachable (); | |
7858 | } | |
7859 | } | |
7860 | ||
04ddfe06 KT |
7861 | /* Pop the two registers numbered REGNO1, REGNO2 from the stack, adjusting it |
7862 | afterwards by ADJUSTMENT and writing the appropriate REG_CFA_RESTORE notes | |
7863 | into CFI_OPS. */ | |
7864 | ||
89ac681e WD |
7865 | static void |
7866 | aarch64_pop_regs (unsigned regno1, unsigned regno2, HOST_WIDE_INT adjustment, | |
7867 | rtx *cfi_ops) | |
7868 | { | |
c600df9a | 7869 | machine_mode mode = aarch64_reg_save_mode (regno1); |
89ac681e WD |
7870 | rtx reg1 = gen_rtx_REG (mode, regno1); |
7871 | ||
7872 | *cfi_ops = alloc_reg_note (REG_CFA_RESTORE, reg1, *cfi_ops); | |
7873 | ||
71bfb77a | 7874 | if (regno2 == INVALID_REGNUM) |
89ac681e WD |
7875 | { |
7876 | rtx mem = plus_constant (Pmode, stack_pointer_rtx, adjustment); | |
7877 | mem = gen_rtx_POST_MODIFY (Pmode, stack_pointer_rtx, mem); | |
30079dde | 7878 | emit_move_insn (reg1, gen_frame_mem (mode, mem)); |
89ac681e WD |
7879 | } |
7880 | else | |
7881 | { | |
7882 | rtx reg2 = gen_rtx_REG (mode, regno2); | |
7883 | *cfi_ops = alloc_reg_note (REG_CFA_RESTORE, reg2, *cfi_ops); | |
7884 | emit_insn (aarch64_gen_loadwb_pair (mode, stack_pointer_rtx, reg1, | |
7885 | reg2, adjustment)); | |
7886 | } | |
7887 | } | |
7888 | ||
04ddfe06 KT |
7889 | /* Generate and return a store pair instruction of mode MODE to store |
7890 | register REG1 to MEM1 and register REG2 to MEM2. */ | |
7891 | ||
72df5c1f | 7892 | static rtx |
ef4bddc2 | 7893 | aarch64_gen_store_pair (machine_mode mode, rtx mem1, rtx reg1, rtx mem2, |
72df5c1f JW |
7894 | rtx reg2) |
7895 | { | |
7896 | switch (mode) | |
7897 | { | |
4e10a5a7 | 7898 | case E_DImode: |
dfe1da23 | 7899 | return gen_store_pair_dw_didi (mem1, reg1, mem2, reg2); |
72df5c1f | 7900 | |
4e10a5a7 | 7901 | case E_DFmode: |
dfe1da23 | 7902 | return gen_store_pair_dw_dfdf (mem1, reg1, mem2, reg2); |
72df5c1f | 7903 | |
a0d0b980 SE |
7904 | case E_TFmode: |
7905 | return gen_store_pair_dw_tftf (mem1, reg1, mem2, reg2); | |
7906 | ||
7cda9e08 SD |
7907 | case E_V4SImode: |
7908 | return gen_vec_store_pairv4siv4si (mem1, reg1, mem2, reg2); | |
7909 | ||
54bbde55 SD |
7910 | case E_V16QImode: |
7911 | return gen_vec_store_pairv16qiv16qi (mem1, reg1, mem2, reg2); | |
7912 | ||
72df5c1f JW |
7913 | default: |
7914 | gcc_unreachable (); | |
7915 | } | |
7916 | } | |
7917 | ||
04ddfe06 KT |
7918 | /* Generate and regurn a load pair isntruction of mode MODE to load register |
7919 | REG1 from MEM1 and register REG2 from MEM2. */ | |
7920 | ||
72df5c1f | 7921 | static rtx |
ef4bddc2 | 7922 | aarch64_gen_load_pair (machine_mode mode, rtx reg1, rtx mem1, rtx reg2, |
72df5c1f JW |
7923 | rtx mem2) |
7924 | { | |
7925 | switch (mode) | |
7926 | { | |
4e10a5a7 | 7927 | case E_DImode: |
dfe1da23 | 7928 | return gen_load_pair_dw_didi (reg1, mem1, reg2, mem2); |
72df5c1f | 7929 | |
4e10a5a7 | 7930 | case E_DFmode: |
dfe1da23 | 7931 | return gen_load_pair_dw_dfdf (reg1, mem1, reg2, mem2); |
72df5c1f | 7932 | |
a0d0b980 SE |
7933 | case E_TFmode: |
7934 | return gen_load_pair_dw_tftf (reg1, mem1, reg2, mem2); | |
7935 | ||
7cda9e08 SD |
7936 | case E_V4SImode: |
7937 | return gen_load_pairv4siv4si (reg1, mem1, reg2, mem2); | |
7938 | ||
72df5c1f JW |
7939 | default: |
7940 | gcc_unreachable (); | |
7941 | } | |
7942 | } | |
7943 | ||
db58fd89 JW |
7944 | /* Return TRUE if return address signing should be enabled for the current |
7945 | function, otherwise return FALSE. */ | |
7946 | ||
7947 | bool | |
7948 | aarch64_return_address_signing_enabled (void) | |
7949 | { | |
7950 | /* This function should only be called after frame laid out. */ | |
7951 | gcc_assert (cfun->machine->frame.laid_out); | |
7952 | ||
2bc95be3 SN |
7953 | /* Turn return address signing off in any function that uses |
7954 | __builtin_eh_return. The address passed to __builtin_eh_return | |
7955 | is not signed so either it has to be signed (with original sp) | |
7956 | or the code path that uses it has to avoid authenticating it. | |
7957 | Currently eh return introduces a return to anywhere gadget, no | |
7958 | matter what we do here since it uses ret with user provided | |
7959 | address. An ideal fix for that is to use indirect branch which | |
7960 | can be protected with BTI j (to some extent). */ | |
7961 | if (crtl->calls_eh_return) | |
7962 | return false; | |
7963 | ||
db58fd89 | 7964 | /* If signing scope is AARCH64_FUNCTION_NON_LEAF, we only sign a leaf function |
8fc16d72 | 7965 | if its LR is pushed onto stack. */ |
db58fd89 JW |
7966 | return (aarch64_ra_sign_scope == AARCH64_FUNCTION_ALL |
7967 | || (aarch64_ra_sign_scope == AARCH64_FUNCTION_NON_LEAF | |
c600df9a | 7968 | && known_ge (cfun->machine->frame.reg_offset[LR_REGNUM], 0))); |
db58fd89 JW |
7969 | } |
7970 | ||
30afdf34 SD |
7971 | /* Return TRUE if Branch Target Identification Mechanism is enabled. */ |
7972 | bool | |
7973 | aarch64_bti_enabled (void) | |
7974 | { | |
7975 | return (aarch64_enable_bti == 1); | |
7976 | } | |
7977 | ||
c600df9a RS |
7978 | /* The caller is going to use ST1D or LD1D to save or restore an SVE |
7979 | register in mode MODE at BASE_RTX + OFFSET, where OFFSET is in | |
7980 | the range [1, 16] * GET_MODE_SIZE (MODE). Prepare for this by: | |
7981 | ||
7982 | (1) updating BASE_RTX + OFFSET so that it is a legitimate ST1D | |
7983 | or LD1D address | |
7984 | ||
7985 | (2) setting PRED to a valid predicate register for the ST1D or LD1D, | |
7986 | if the variable isn't already nonnull | |
7987 | ||
7988 | (1) is needed when OFFSET is in the range [8, 16] * GET_MODE_SIZE (MODE). | |
7989 | Handle this case using a temporary base register that is suitable for | |
7990 | all offsets in that range. Use ANCHOR_REG as this base register if it | |
7991 | is nonnull, otherwise create a new register and store it in ANCHOR_REG. */ | |
7992 | ||
7993 | static inline void | |
7994 | aarch64_adjust_sve_callee_save_base (machine_mode mode, rtx &base_rtx, | |
7995 | rtx &anchor_reg, poly_int64 &offset, | |
7996 | rtx &ptrue) | |
7997 | { | |
7998 | if (maybe_ge (offset, 8 * GET_MODE_SIZE (mode))) | |
7999 | { | |
8000 | /* This is the maximum valid offset of the anchor from the base. | |
8001 | Lower values would be valid too. */ | |
8002 | poly_int64 anchor_offset = 16 * GET_MODE_SIZE (mode); | |
8003 | if (!anchor_reg) | |
8004 | { | |
8005 | anchor_reg = gen_rtx_REG (Pmode, STACK_CLASH_SVE_CFA_REGNUM); | |
8006 | emit_insn (gen_add3_insn (anchor_reg, base_rtx, | |
8007 | gen_int_mode (anchor_offset, Pmode))); | |
8008 | } | |
8009 | base_rtx = anchor_reg; | |
8010 | offset -= anchor_offset; | |
8011 | } | |
8012 | if (!ptrue) | |
8013 | { | |
8014 | int pred_reg = cfun->machine->frame.spare_pred_reg; | |
8015 | emit_move_insn (gen_rtx_REG (VNx16BImode, pred_reg), | |
8016 | CONSTM1_RTX (VNx16BImode)); | |
8017 | ptrue = gen_rtx_REG (VNx2BImode, pred_reg); | |
8018 | } | |
8019 | } | |
8020 | ||
8021 | /* Add a REG_CFA_EXPRESSION note to INSN to say that register REG | |
8022 | is saved at BASE + OFFSET. */ | |
8023 | ||
8024 | static void | |
8025 | aarch64_add_cfa_expression (rtx_insn *insn, rtx reg, | |
8026 | rtx base, poly_int64 offset) | |
8027 | { | |
8028 | rtx mem = gen_frame_mem (GET_MODE (reg), | |
8029 | plus_constant (Pmode, base, offset)); | |
8030 | add_reg_note (insn, REG_CFA_EXPRESSION, gen_rtx_SET (mem, reg)); | |
8031 | } | |
8032 | ||
04ddfe06 KT |
8033 | /* Emit code to save the callee-saved registers from register number START |
8034 | to LIMIT to the stack at the location starting at offset START_OFFSET, | |
c600df9a RS |
8035 | skipping any write-back candidates if SKIP_WB is true. HARD_FP_VALID_P |
8036 | is true if the hard frame pointer has been set up. */ | |
43e9d192 | 8037 | |
43e9d192 | 8038 | static void |
c600df9a RS |
8039 | aarch64_save_callee_saves (poly_int64 start_offset, |
8040 | unsigned start, unsigned limit, bool skip_wb, | |
8041 | bool hard_fp_valid_p) | |
43e9d192 | 8042 | { |
5d8a22a5 | 8043 | rtx_insn *insn; |
43e9d192 IB |
8044 | unsigned regno; |
8045 | unsigned regno2; | |
c600df9a | 8046 | rtx anchor_reg = NULL_RTX, ptrue = NULL_RTX; |
43e9d192 | 8047 | |
0ec74a1e | 8048 | for (regno = aarch64_next_callee_save (start, limit); |
64dedd72 JW |
8049 | regno <= limit; |
8050 | regno = aarch64_next_callee_save (regno + 1, limit)) | |
43e9d192 | 8051 | { |
ae13fce3 | 8052 | rtx reg, mem; |
6a70badb | 8053 | poly_int64 offset; |
c600df9a | 8054 | bool frame_related_p = aarch64_emit_cfi_for_reg_p (regno); |
64dedd72 | 8055 | |
ae13fce3 JW |
8056 | if (skip_wb |
8057 | && (regno == cfun->machine->frame.wb_candidate1 | |
8058 | || regno == cfun->machine->frame.wb_candidate2)) | |
8059 | continue; | |
8060 | ||
827ab47a | 8061 | if (cfun->machine->reg_is_wrapped_separately[regno]) |
c600df9a | 8062 | continue; |
827ab47a | 8063 | |
c600df9a | 8064 | machine_mode mode = aarch64_reg_save_mode (regno); |
ae13fce3 JW |
8065 | reg = gen_rtx_REG (mode, regno); |
8066 | offset = start_offset + cfun->machine->frame.reg_offset[regno]; | |
c600df9a RS |
8067 | rtx base_rtx = stack_pointer_rtx; |
8068 | poly_int64 sp_offset = offset; | |
64dedd72 | 8069 | |
c600df9a RS |
8070 | HOST_WIDE_INT const_offset; |
8071 | if (mode == VNx2DImode && BYTES_BIG_ENDIAN) | |
8072 | aarch64_adjust_sve_callee_save_base (mode, base_rtx, anchor_reg, | |
8073 | offset, ptrue); | |
8074 | else if (GP_REGNUM_P (regno) | |
8075 | && (!offset.is_constant (&const_offset) || const_offset >= 512)) | |
8076 | { | |
8077 | gcc_assert (known_eq (start_offset, 0)); | |
8078 | poly_int64 fp_offset | |
8079 | = cfun->machine->frame.below_hard_fp_saved_regs_size; | |
8080 | if (hard_fp_valid_p) | |
8081 | base_rtx = hard_frame_pointer_rtx; | |
8082 | else | |
8083 | { | |
8084 | if (!anchor_reg) | |
8085 | { | |
8086 | anchor_reg = gen_rtx_REG (Pmode, STACK_CLASH_SVE_CFA_REGNUM); | |
8087 | emit_insn (gen_add3_insn (anchor_reg, base_rtx, | |
8088 | gen_int_mode (fp_offset, Pmode))); | |
8089 | } | |
8090 | base_rtx = anchor_reg; | |
8091 | } | |
8092 | offset -= fp_offset; | |
8093 | } | |
8094 | mem = gen_frame_mem (mode, plus_constant (Pmode, base_rtx, offset)); | |
8095 | bool need_cfa_note_p = (base_rtx != stack_pointer_rtx); | |
64dedd72 | 8096 | |
c600df9a RS |
8097 | if (!aarch64_sve_mode_p (mode) |
8098 | && (regno2 = aarch64_next_callee_save (regno + 1, limit)) <= limit | |
827ab47a | 8099 | && !cfun->machine->reg_is_wrapped_separately[regno2] |
c600df9a RS |
8100 | && known_eq (GET_MODE_SIZE (mode), |
8101 | cfun->machine->frame.reg_offset[regno2] | |
8102 | - cfun->machine->frame.reg_offset[regno])) | |
43e9d192 | 8103 | { |
0ec74a1e | 8104 | rtx reg2 = gen_rtx_REG (mode, regno2); |
64dedd72 JW |
8105 | rtx mem2; |
8106 | ||
c600df9a RS |
8107 | offset += GET_MODE_SIZE (mode); |
8108 | mem2 = gen_frame_mem (mode, plus_constant (Pmode, base_rtx, offset)); | |
8ed2fc62 JW |
8109 | insn = emit_insn (aarch64_gen_store_pair (mode, mem, reg, mem2, |
8110 | reg2)); | |
0b4a9743 | 8111 | |
64dedd72 JW |
8112 | /* The first part of a frame-related parallel insn is |
8113 | always assumed to be relevant to the frame | |
8114 | calculations; subsequent parts, are only | |
8115 | frame-related if explicitly marked. */ | |
c600df9a RS |
8116 | if (aarch64_emit_cfi_for_reg_p (regno2)) |
8117 | { | |
8118 | if (need_cfa_note_p) | |
8119 | aarch64_add_cfa_expression (insn, reg2, stack_pointer_rtx, | |
8120 | sp_offset + GET_MODE_SIZE (mode)); | |
8121 | else | |
8122 | RTX_FRAME_RELATED_P (XVECEXP (PATTERN (insn), 0, 1)) = 1; | |
8123 | } | |
8124 | ||
64dedd72 JW |
8125 | regno = regno2; |
8126 | } | |
c600df9a RS |
8127 | else if (mode == VNx2DImode && BYTES_BIG_ENDIAN) |
8128 | { | |
8129 | insn = emit_insn (gen_aarch64_pred_mov (mode, mem, ptrue, reg)); | |
8130 | need_cfa_note_p = true; | |
8131 | } | |
8132 | else if (aarch64_sve_mode_p (mode)) | |
8133 | insn = emit_insn (gen_rtx_SET (mem, reg)); | |
64dedd72 | 8134 | else |
8ed2fc62 JW |
8135 | insn = emit_move_insn (mem, reg); |
8136 | ||
c600df9a RS |
8137 | RTX_FRAME_RELATED_P (insn) = frame_related_p; |
8138 | if (frame_related_p && need_cfa_note_p) | |
8139 | aarch64_add_cfa_expression (insn, reg, stack_pointer_rtx, sp_offset); | |
8ed2fc62 JW |
8140 | } |
8141 | } | |
8142 | ||
c600df9a RS |
8143 | /* Emit code to restore the callee registers from register number START |
8144 | up to and including LIMIT. Restore from the stack offset START_OFFSET, | |
8145 | skipping any write-back candidates if SKIP_WB is true. Write the | |
8146 | appropriate REG_CFA_RESTORE notes into CFI_OPS. */ | |
04ddfe06 | 8147 | |
8ed2fc62 | 8148 | static void |
c600df9a | 8149 | aarch64_restore_callee_saves (poly_int64 start_offset, unsigned start, |
dd991abb | 8150 | unsigned limit, bool skip_wb, rtx *cfi_ops) |
8ed2fc62 | 8151 | { |
8ed2fc62 JW |
8152 | unsigned regno; |
8153 | unsigned regno2; | |
6a70badb | 8154 | poly_int64 offset; |
c600df9a | 8155 | rtx anchor_reg = NULL_RTX, ptrue = NULL_RTX; |
8ed2fc62 JW |
8156 | |
8157 | for (regno = aarch64_next_callee_save (start, limit); | |
8158 | regno <= limit; | |
8159 | regno = aarch64_next_callee_save (regno + 1, limit)) | |
8160 | { | |
c600df9a | 8161 | bool frame_related_p = aarch64_emit_cfi_for_reg_p (regno); |
827ab47a | 8162 | if (cfun->machine->reg_is_wrapped_separately[regno]) |
c600df9a | 8163 | continue; |
827ab47a | 8164 | |
ae13fce3 | 8165 | rtx reg, mem; |
8ed2fc62 | 8166 | |
ae13fce3 JW |
8167 | if (skip_wb |
8168 | && (regno == cfun->machine->frame.wb_candidate1 | |
8169 | || regno == cfun->machine->frame.wb_candidate2)) | |
8170 | continue; | |
8171 | ||
c600df9a | 8172 | machine_mode mode = aarch64_reg_save_mode (regno); |
ae13fce3 | 8173 | reg = gen_rtx_REG (mode, regno); |
8ed2fc62 | 8174 | offset = start_offset + cfun->machine->frame.reg_offset[regno]; |
c600df9a RS |
8175 | rtx base_rtx = stack_pointer_rtx; |
8176 | if (mode == VNx2DImode && BYTES_BIG_ENDIAN) | |
8177 | aarch64_adjust_sve_callee_save_base (mode, base_rtx, anchor_reg, | |
8178 | offset, ptrue); | |
30079dde | 8179 | mem = gen_frame_mem (mode, plus_constant (Pmode, base_rtx, offset)); |
8ed2fc62 | 8180 | |
c600df9a RS |
8181 | if (!aarch64_sve_mode_p (mode) |
8182 | && (regno2 = aarch64_next_callee_save (regno + 1, limit)) <= limit | |
827ab47a | 8183 | && !cfun->machine->reg_is_wrapped_separately[regno2] |
c600df9a RS |
8184 | && known_eq (GET_MODE_SIZE (mode), |
8185 | cfun->machine->frame.reg_offset[regno2] | |
8186 | - cfun->machine->frame.reg_offset[regno])) | |
64dedd72 | 8187 | { |
8ed2fc62 JW |
8188 | rtx reg2 = gen_rtx_REG (mode, regno2); |
8189 | rtx mem2; | |
8190 | ||
c600df9a | 8191 | offset += GET_MODE_SIZE (mode); |
30079dde | 8192 | mem2 = gen_frame_mem (mode, plus_constant (Pmode, base_rtx, offset)); |
dd991abb | 8193 | emit_insn (aarch64_gen_load_pair (mode, reg, mem, reg2, mem2)); |
8ed2fc62 | 8194 | |
dd991abb | 8195 | *cfi_ops = alloc_reg_note (REG_CFA_RESTORE, reg2, *cfi_ops); |
8ed2fc62 | 8196 | regno = regno2; |
43e9d192 | 8197 | } |
c600df9a RS |
8198 | else if (mode == VNx2DImode && BYTES_BIG_ENDIAN) |
8199 | emit_insn (gen_aarch64_pred_mov (mode, reg, ptrue, mem)); | |
8200 | else if (aarch64_sve_mode_p (mode)) | |
8201 | emit_insn (gen_rtx_SET (reg, mem)); | |
8ed2fc62 | 8202 | else |
dd991abb | 8203 | emit_move_insn (reg, mem); |
c600df9a RS |
8204 | if (frame_related_p) |
8205 | *cfi_ops = alloc_reg_note (REG_CFA_RESTORE, reg, *cfi_ops); | |
43e9d192 | 8206 | } |
43e9d192 IB |
8207 | } |
8208 | ||
43cacb12 RS |
8209 | /* Return true if OFFSET is a signed 4-bit value multiplied by the size |
8210 | of MODE. */ | |
8211 | ||
8212 | static inline bool | |
8213 | offset_4bit_signed_scaled_p (machine_mode mode, poly_int64 offset) | |
8214 | { | |
8215 | HOST_WIDE_INT multiple; | |
8216 | return (constant_multiple_p (offset, GET_MODE_SIZE (mode), &multiple) | |
8217 | && IN_RANGE (multiple, -8, 7)); | |
8218 | } | |
8219 | ||
ba15b0fa RS |
8220 | /* Return true if OFFSET is a signed 6-bit value multiplied by the size |
8221 | of MODE. */ | |
8222 | ||
8223 | static inline bool | |
8224 | offset_6bit_signed_scaled_p (machine_mode mode, poly_int64 offset) | |
8225 | { | |
8226 | HOST_WIDE_INT multiple; | |
8227 | return (constant_multiple_p (offset, GET_MODE_SIZE (mode), &multiple) | |
8228 | && IN_RANGE (multiple, -32, 31)); | |
8229 | } | |
8230 | ||
8231 | /* Return true if OFFSET is an unsigned 6-bit value multiplied by the size | |
43cacb12 RS |
8232 | of MODE. */ |
8233 | ||
8234 | static inline bool | |
8235 | offset_6bit_unsigned_scaled_p (machine_mode mode, poly_int64 offset) | |
8236 | { | |
8237 | HOST_WIDE_INT multiple; | |
8238 | return (constant_multiple_p (offset, GET_MODE_SIZE (mode), &multiple) | |
8239 | && IN_RANGE (multiple, 0, 63)); | |
8240 | } | |
8241 | ||
8242 | /* Return true if OFFSET is a signed 7-bit value multiplied by the size | |
8243 | of MODE. */ | |
8244 | ||
8245 | bool | |
8246 | aarch64_offset_7bit_signed_scaled_p (machine_mode mode, poly_int64 offset) | |
8247 | { | |
8248 | HOST_WIDE_INT multiple; | |
8249 | return (constant_multiple_p (offset, GET_MODE_SIZE (mode), &multiple) | |
8250 | && IN_RANGE (multiple, -64, 63)); | |
8251 | } | |
8252 | ||
8253 | /* Return true if OFFSET is a signed 9-bit value. */ | |
8254 | ||
3c5af608 MM |
8255 | bool |
8256 | aarch64_offset_9bit_signed_unscaled_p (machine_mode mode ATTRIBUTE_UNUSED, | |
8257 | poly_int64 offset) | |
827ab47a | 8258 | { |
6a70badb RS |
8259 | HOST_WIDE_INT const_offset; |
8260 | return (offset.is_constant (&const_offset) | |
8261 | && IN_RANGE (const_offset, -256, 255)); | |
827ab47a KT |
8262 | } |
8263 | ||
43cacb12 RS |
8264 | /* Return true if OFFSET is a signed 9-bit value multiplied by the size |
8265 | of MODE. */ | |
8266 | ||
827ab47a | 8267 | static inline bool |
43cacb12 | 8268 | offset_9bit_signed_scaled_p (machine_mode mode, poly_int64 offset) |
827ab47a | 8269 | { |
6a70badb RS |
8270 | HOST_WIDE_INT multiple; |
8271 | return (constant_multiple_p (offset, GET_MODE_SIZE (mode), &multiple) | |
43cacb12 | 8272 | && IN_RANGE (multiple, -256, 255)); |
827ab47a KT |
8273 | } |
8274 | ||
43cacb12 RS |
8275 | /* Return true if OFFSET is an unsigned 12-bit value multiplied by the size |
8276 | of MODE. */ | |
8277 | ||
8278 | static inline bool | |
8279 | offset_12bit_unsigned_scaled_p (machine_mode mode, poly_int64 offset) | |
827ab47a | 8280 | { |
6a70badb RS |
8281 | HOST_WIDE_INT multiple; |
8282 | return (constant_multiple_p (offset, GET_MODE_SIZE (mode), &multiple) | |
43cacb12 | 8283 | && IN_RANGE (multiple, 0, 4095)); |
827ab47a KT |
8284 | } |
8285 | ||
8286 | /* Implement TARGET_SHRINK_WRAP_GET_SEPARATE_COMPONENTS. */ | |
8287 | ||
8288 | static sbitmap | |
8289 | aarch64_get_separate_components (void) | |
8290 | { | |
827ab47a KT |
8291 | sbitmap components = sbitmap_alloc (LAST_SAVED_REGNUM + 1); |
8292 | bitmap_clear (components); | |
8293 | ||
8294 | /* The registers we need saved to the frame. */ | |
8295 | for (unsigned regno = 0; regno <= LAST_SAVED_REGNUM; regno++) | |
8296 | if (aarch64_register_saved_on_entry (regno)) | |
8297 | { | |
c600df9a RS |
8298 | /* Punt on saves and restores that use ST1D and LD1D. We could |
8299 | try to be smarter, but it would involve making sure that the | |
8300 | spare predicate register itself is safe to use at the save | |
8301 | and restore points. Also, when a frame pointer is being used, | |
8302 | the slots are often out of reach of ST1D and LD1D anyway. */ | |
8303 | machine_mode mode = aarch64_reg_save_mode (regno); | |
8304 | if (mode == VNx2DImode && BYTES_BIG_ENDIAN) | |
8305 | continue; | |
8306 | ||
6a70badb | 8307 | poly_int64 offset = cfun->machine->frame.reg_offset[regno]; |
c600df9a RS |
8308 | |
8309 | /* If the register is saved in the first SVE save slot, we use | |
8310 | it as a stack probe for -fstack-clash-protection. */ | |
8311 | if (flag_stack_clash_protection | |
8312 | && maybe_ne (cfun->machine->frame.below_hard_fp_saved_regs_size, 0) | |
8313 | && known_eq (offset, 0)) | |
8314 | continue; | |
8315 | ||
8316 | /* Get the offset relative to the register we'll use. */ | |
8317 | if (frame_pointer_needed) | |
8318 | offset -= cfun->machine->frame.below_hard_fp_saved_regs_size; | |
8319 | else | |
8320 | offset += crtl->outgoing_args_size; | |
8321 | ||
827ab47a KT |
8322 | /* Check that we can access the stack slot of the register with one |
8323 | direct load with no adjustments needed. */ | |
c600df9a RS |
8324 | if (aarch64_sve_mode_p (mode) |
8325 | ? offset_9bit_signed_scaled_p (mode, offset) | |
8326 | : offset_12bit_unsigned_scaled_p (mode, offset)) | |
827ab47a KT |
8327 | bitmap_set_bit (components, regno); |
8328 | } | |
8329 | ||
8330 | /* Don't mess with the hard frame pointer. */ | |
8331 | if (frame_pointer_needed) | |
8332 | bitmap_clear_bit (components, HARD_FRAME_POINTER_REGNUM); | |
8333 | ||
c600df9a RS |
8334 | /* If the spare predicate register used by big-endian SVE code |
8335 | is call-preserved, it must be saved in the main prologue | |
8336 | before any saves that use it. */ | |
8337 | if (cfun->machine->frame.spare_pred_reg != INVALID_REGNUM) | |
8338 | bitmap_clear_bit (components, cfun->machine->frame.spare_pred_reg); | |
8339 | ||
827ab47a KT |
8340 | unsigned reg1 = cfun->machine->frame.wb_candidate1; |
8341 | unsigned reg2 = cfun->machine->frame.wb_candidate2; | |
0795f659 | 8342 | /* If registers have been chosen to be stored/restored with |
827ab47a KT |
8343 | writeback don't interfere with them to avoid having to output explicit |
8344 | stack adjustment instructions. */ | |
8345 | if (reg2 != INVALID_REGNUM) | |
8346 | bitmap_clear_bit (components, reg2); | |
8347 | if (reg1 != INVALID_REGNUM) | |
8348 | bitmap_clear_bit (components, reg1); | |
8349 | ||
8350 | bitmap_clear_bit (components, LR_REGNUM); | |
8351 | bitmap_clear_bit (components, SP_REGNUM); | |
8352 | ||
8353 | return components; | |
8354 | } | |
8355 | ||
8356 | /* Implement TARGET_SHRINK_WRAP_COMPONENTS_FOR_BB. */ | |
8357 | ||
8358 | static sbitmap | |
8359 | aarch64_components_for_bb (basic_block bb) | |
8360 | { | |
8361 | bitmap in = DF_LIVE_IN (bb); | |
8362 | bitmap gen = &DF_LIVE_BB_INFO (bb)->gen; | |
8363 | bitmap kill = &DF_LIVE_BB_INFO (bb)->kill; | |
8364 | ||
8365 | sbitmap components = sbitmap_alloc (LAST_SAVED_REGNUM + 1); | |
8366 | bitmap_clear (components); | |
8367 | ||
ce9d2a37 RS |
8368 | /* Clobbered registers don't generate values in any meaningful sense, |
8369 | since nothing after the clobber can rely on their value. And we can't | |
8370 | say that partially-clobbered registers are unconditionally killed, | |
8371 | because whether they're killed or not depends on the mode of the | |
8372 | value they're holding. Thus partially call-clobbered registers | |
8373 | appear in neither the kill set nor the gen set. | |
8374 | ||
8375 | Check manually for any calls that clobber more of a register than the | |
8376 | current function can. */ | |
8377 | function_abi_aggregator callee_abis; | |
8378 | rtx_insn *insn; | |
8379 | FOR_BB_INSNS (bb, insn) | |
8380 | if (CALL_P (insn)) | |
8381 | callee_abis.note_callee_abi (insn_callee_abi (insn)); | |
8382 | HARD_REG_SET extra_caller_saves = callee_abis.caller_save_regs (*crtl->abi); | |
8383 | ||
827ab47a KT |
8384 | /* GPRs are used in a bb if they are in the IN, GEN, or KILL sets. */ |
8385 | for (unsigned regno = 0; regno <= LAST_SAVED_REGNUM; regno++) | |
dcdd0f05 RS |
8386 | if (!fixed_regs[regno] |
8387 | && !crtl->abi->clobbers_full_reg_p (regno) | |
ce9d2a37 RS |
8388 | && (TEST_HARD_REG_BIT (extra_caller_saves, regno) |
8389 | || bitmap_bit_p (in, regno) | |
8390 | || bitmap_bit_p (gen, regno) | |
8391 | || bitmap_bit_p (kill, regno))) | |
3f26f054 | 8392 | { |
3f26f054 WD |
8393 | bitmap_set_bit (components, regno); |
8394 | ||
8395 | /* If there is a callee-save at an adjacent offset, add it too | |
8396 | to increase the use of LDP/STP. */ | |
c600df9a RS |
8397 | poly_int64 offset = cfun->machine->frame.reg_offset[regno]; |
8398 | unsigned regno2 = multiple_p (offset, 16) ? regno + 1 : regno - 1; | |
3f26f054 WD |
8399 | |
8400 | if (regno2 <= LAST_SAVED_REGNUM) | |
8401 | { | |
c600df9a RS |
8402 | poly_int64 offset2 = cfun->machine->frame.reg_offset[regno2]; |
8403 | if (regno < regno2 | |
8404 | ? known_eq (offset + 8, offset2) | |
8405 | : multiple_p (offset2, 16) && known_eq (offset2 + 8, offset)) | |
3f26f054 WD |
8406 | bitmap_set_bit (components, regno2); |
8407 | } | |
8408 | } | |
827ab47a KT |
8409 | |
8410 | return components; | |
8411 | } | |
8412 | ||
8413 | /* Implement TARGET_SHRINK_WRAP_DISQUALIFY_COMPONENTS. | |
8414 | Nothing to do for aarch64. */ | |
8415 | ||
8416 | static void | |
8417 | aarch64_disqualify_components (sbitmap, edge, sbitmap, bool) | |
8418 | { | |
8419 | } | |
8420 | ||
8421 | /* Return the next set bit in BMP from START onwards. Return the total number | |
8422 | of bits in BMP if no set bit is found at or after START. */ | |
8423 | ||
8424 | static unsigned int | |
8425 | aarch64_get_next_set_bit (sbitmap bmp, unsigned int start) | |
8426 | { | |
8427 | unsigned int nbits = SBITMAP_SIZE (bmp); | |
8428 | if (start == nbits) | |
8429 | return start; | |
8430 | ||
8431 | gcc_assert (start < nbits); | |
8432 | for (unsigned int i = start; i < nbits; i++) | |
8433 | if (bitmap_bit_p (bmp, i)) | |
8434 | return i; | |
8435 | ||
8436 | return nbits; | |
8437 | } | |
8438 | ||
8439 | /* Do the work for aarch64_emit_prologue_components and | |
8440 | aarch64_emit_epilogue_components. COMPONENTS is the bitmap of registers | |
8441 | to save/restore, PROLOGUE_P indicates whether to emit the prologue sequence | |
8442 | for these components or the epilogue sequence. That is, it determines | |
8443 | whether we should emit stores or loads and what kind of CFA notes to attach | |
8444 | to the insns. Otherwise the logic for the two sequences is very | |
8445 | similar. */ | |
8446 | ||
8447 | static void | |
8448 | aarch64_process_components (sbitmap components, bool prologue_p) | |
8449 | { | |
8450 | rtx ptr_reg = gen_rtx_REG (Pmode, frame_pointer_needed | |
8451 | ? HARD_FRAME_POINTER_REGNUM | |
8452 | : STACK_POINTER_REGNUM); | |
8453 | ||
8454 | unsigned last_regno = SBITMAP_SIZE (components); | |
8455 | unsigned regno = aarch64_get_next_set_bit (components, R0_REGNUM); | |
8456 | rtx_insn *insn = NULL; | |
8457 | ||
8458 | while (regno != last_regno) | |
8459 | { | |
c600df9a RS |
8460 | bool frame_related_p = aarch64_emit_cfi_for_reg_p (regno); |
8461 | machine_mode mode = aarch64_reg_save_mode (regno); | |
a0d0b980 | 8462 | |
827ab47a | 8463 | rtx reg = gen_rtx_REG (mode, regno); |
6a70badb | 8464 | poly_int64 offset = cfun->machine->frame.reg_offset[regno]; |
c600df9a RS |
8465 | if (frame_pointer_needed) |
8466 | offset -= cfun->machine->frame.below_hard_fp_saved_regs_size; | |
8467 | else | |
8468 | offset += crtl->outgoing_args_size; | |
8469 | ||
827ab47a KT |
8470 | rtx addr = plus_constant (Pmode, ptr_reg, offset); |
8471 | rtx mem = gen_frame_mem (mode, addr); | |
8472 | ||
8473 | rtx set = prologue_p ? gen_rtx_SET (mem, reg) : gen_rtx_SET (reg, mem); | |
8474 | unsigned regno2 = aarch64_get_next_set_bit (components, regno + 1); | |
8475 | /* No more registers to handle after REGNO. | |
8476 | Emit a single save/restore and exit. */ | |
8477 | if (regno2 == last_regno) | |
8478 | { | |
8479 | insn = emit_insn (set); | |
c600df9a RS |
8480 | if (frame_related_p) |
8481 | { | |
8482 | RTX_FRAME_RELATED_P (insn) = 1; | |
8483 | if (prologue_p) | |
8484 | add_reg_note (insn, REG_CFA_OFFSET, copy_rtx (set)); | |
8485 | else | |
8486 | add_reg_note (insn, REG_CFA_RESTORE, reg); | |
8487 | } | |
827ab47a KT |
8488 | break; |
8489 | } | |
8490 | ||
6a70badb | 8491 | poly_int64 offset2 = cfun->machine->frame.reg_offset[regno2]; |
827ab47a KT |
8492 | /* The next register is not of the same class or its offset is not |
8493 | mergeable with the current one into a pair. */ | |
c600df9a RS |
8494 | if (aarch64_sve_mode_p (mode) |
8495 | || !satisfies_constraint_Ump (mem) | |
827ab47a | 8496 | || GP_REGNUM_P (regno) != GP_REGNUM_P (regno2) |
dcdd0f05 | 8497 | || (crtl->abi->id () == ARM_PCS_SIMD && FP_REGNUM_P (regno)) |
6a70badb RS |
8498 | || maybe_ne ((offset2 - cfun->machine->frame.reg_offset[regno]), |
8499 | GET_MODE_SIZE (mode))) | |
827ab47a KT |
8500 | { |
8501 | insn = emit_insn (set); | |
c600df9a RS |
8502 | if (frame_related_p) |
8503 | { | |
8504 | RTX_FRAME_RELATED_P (insn) = 1; | |
8505 | if (prologue_p) | |
8506 | add_reg_note (insn, REG_CFA_OFFSET, copy_rtx (set)); | |
8507 | else | |
8508 | add_reg_note (insn, REG_CFA_RESTORE, reg); | |
8509 | } | |
827ab47a KT |
8510 | |
8511 | regno = regno2; | |
8512 | continue; | |
8513 | } | |
8514 | ||
c600df9a RS |
8515 | bool frame_related2_p = aarch64_emit_cfi_for_reg_p (regno2); |
8516 | ||
827ab47a KT |
8517 | /* REGNO2 can be saved/restored in a pair with REGNO. */ |
8518 | rtx reg2 = gen_rtx_REG (mode, regno2); | |
c600df9a RS |
8519 | if (frame_pointer_needed) |
8520 | offset2 -= cfun->machine->frame.below_hard_fp_saved_regs_size; | |
8521 | else | |
8522 | offset2 += crtl->outgoing_args_size; | |
827ab47a KT |
8523 | rtx addr2 = plus_constant (Pmode, ptr_reg, offset2); |
8524 | rtx mem2 = gen_frame_mem (mode, addr2); | |
8525 | rtx set2 = prologue_p ? gen_rtx_SET (mem2, reg2) | |
8526 | : gen_rtx_SET (reg2, mem2); | |
8527 | ||
8528 | if (prologue_p) | |
8529 | insn = emit_insn (aarch64_gen_store_pair (mode, mem, reg, mem2, reg2)); | |
8530 | else | |
8531 | insn = emit_insn (aarch64_gen_load_pair (mode, reg, mem, reg2, mem2)); | |
8532 | ||
c600df9a | 8533 | if (frame_related_p || frame_related2_p) |
827ab47a | 8534 | { |
c600df9a RS |
8535 | RTX_FRAME_RELATED_P (insn) = 1; |
8536 | if (prologue_p) | |
8537 | { | |
8538 | if (frame_related_p) | |
8539 | add_reg_note (insn, REG_CFA_OFFSET, set); | |
8540 | if (frame_related2_p) | |
8541 | add_reg_note (insn, REG_CFA_OFFSET, set2); | |
8542 | } | |
8543 | else | |
8544 | { | |
8545 | if (frame_related_p) | |
8546 | add_reg_note (insn, REG_CFA_RESTORE, reg); | |
8547 | if (frame_related2_p) | |
8548 | add_reg_note (insn, REG_CFA_RESTORE, reg2); | |
8549 | } | |
827ab47a KT |
8550 | } |
8551 | ||
8552 | regno = aarch64_get_next_set_bit (components, regno2 + 1); | |
8553 | } | |
8554 | } | |
8555 | ||
8556 | /* Implement TARGET_SHRINK_WRAP_EMIT_PROLOGUE_COMPONENTS. */ | |
8557 | ||
8558 | static void | |
8559 | aarch64_emit_prologue_components (sbitmap components) | |
8560 | { | |
8561 | aarch64_process_components (components, true); | |
8562 | } | |
8563 | ||
8564 | /* Implement TARGET_SHRINK_WRAP_EMIT_EPILOGUE_COMPONENTS. */ | |
8565 | ||
8566 | static void | |
8567 | aarch64_emit_epilogue_components (sbitmap components) | |
8568 | { | |
8569 | aarch64_process_components (components, false); | |
8570 | } | |
8571 | ||
8572 | /* Implement TARGET_SHRINK_WRAP_SET_HANDLED_COMPONENTS. */ | |
8573 | ||
8574 | static void | |
8575 | aarch64_set_handled_components (sbitmap components) | |
8576 | { | |
8577 | for (unsigned regno = 0; regno <= LAST_SAVED_REGNUM; regno++) | |
8578 | if (bitmap_bit_p (components, regno)) | |
8579 | cfun->machine->reg_is_wrapped_separately[regno] = true; | |
8580 | } | |
8581 | ||
8c6e3b23 TC |
8582 | /* On AArch64 we have an ABI defined safe buffer. This constant is used to |
8583 | determining the probe offset for alloca. */ | |
8584 | ||
8585 | static HOST_WIDE_INT | |
8586 | aarch64_stack_clash_protection_alloca_probe_range (void) | |
8587 | { | |
8588 | return STACK_CLASH_CALLER_GUARD; | |
8589 | } | |
8590 | ||
8591 | ||
cd1bef27 JL |
8592 | /* Allocate POLY_SIZE bytes of stack space using TEMP1 and TEMP2 as scratch |
8593 | registers. If POLY_SIZE is not large enough to require a probe this function | |
8594 | will only adjust the stack. When allocating the stack space | |
8595 | FRAME_RELATED_P is then used to indicate if the allocation is frame related. | |
8596 | FINAL_ADJUSTMENT_P indicates whether we are allocating the outgoing | |
8597 | arguments. If we are then we ensure that any allocation larger than the ABI | |
8598 | defined buffer needs a probe so that the invariant of having a 1KB buffer is | |
8599 | maintained. | |
8600 | ||
8601 | We emit barriers after each stack adjustment to prevent optimizations from | |
8602 | breaking the invariant that we never drop the stack more than a page. This | |
8603 | invariant is needed to make it easier to correctly handle asynchronous | |
8604 | events, e.g. if we were to allow the stack to be dropped by more than a page | |
8605 | and then have multiple probes up and we take a signal somewhere in between | |
8606 | then the signal handler doesn't know the state of the stack and can make no | |
8607 | assumptions about which pages have been probed. */ | |
8608 | ||
8609 | static void | |
8610 | aarch64_allocate_and_probe_stack_space (rtx temp1, rtx temp2, | |
8611 | poly_int64 poly_size, | |
8612 | bool frame_related_p, | |
8613 | bool final_adjustment_p) | |
8614 | { | |
8615 | HOST_WIDE_INT guard_size | |
028d4092 | 8616 | = 1 << param_stack_clash_protection_guard_size; |
cd1bef27 | 8617 | HOST_WIDE_INT guard_used_by_caller = STACK_CLASH_CALLER_GUARD; |
cd1bef27 | 8618 | HOST_WIDE_INT min_probe_threshold |
c600df9a RS |
8619 | = (final_adjustment_p |
8620 | ? guard_used_by_caller | |
8621 | : guard_size - guard_used_by_caller); | |
8622 | /* When doing the final adjustment for the outgoing arguments, take into | |
8623 | account any unprobed space there is above the current SP. There are | |
8624 | two cases: | |
8625 | ||
8626 | - When saving SVE registers below the hard frame pointer, we force | |
8627 | the lowest save to take place in the prologue before doing the final | |
8628 | adjustment (i.e. we don't allow the save to be shrink-wrapped). | |
8629 | This acts as a probe at SP, so there is no unprobed space. | |
8630 | ||
8631 | - When there are no SVE register saves, we use the store of the link | |
8632 | register as a probe. We can't assume that LR was saved at position 0 | |
8633 | though, so treat any space below it as unprobed. */ | |
8634 | if (final_adjustment_p | |
8635 | && known_eq (cfun->machine->frame.below_hard_fp_saved_regs_size, 0)) | |
8636 | { | |
8637 | poly_int64 lr_offset = cfun->machine->frame.reg_offset[LR_REGNUM]; | |
8638 | if (known_ge (lr_offset, 0)) | |
8639 | min_probe_threshold -= lr_offset.to_constant (); | |
8640 | else | |
8641 | gcc_assert (!flag_stack_clash_protection || known_eq (poly_size, 0)); | |
8642 | } | |
cd1bef27 JL |
8643 | |
8644 | poly_int64 frame_size = cfun->machine->frame.frame_size; | |
8645 | ||
8646 | /* We should always have a positive probe threshold. */ | |
8647 | gcc_assert (min_probe_threshold > 0); | |
8648 | ||
8649 | if (flag_stack_clash_protection && !final_adjustment_p) | |
8650 | { | |
8651 | poly_int64 initial_adjust = cfun->machine->frame.initial_adjust; | |
c600df9a | 8652 | poly_int64 sve_callee_adjust = cfun->machine->frame.sve_callee_adjust; |
cd1bef27 JL |
8653 | poly_int64 final_adjust = cfun->machine->frame.final_adjust; |
8654 | ||
8655 | if (known_eq (frame_size, 0)) | |
8656 | { | |
8657 | dump_stack_clash_frame_info (NO_PROBE_NO_FRAME, false); | |
8658 | } | |
c600df9a RS |
8659 | else if (known_lt (initial_adjust + sve_callee_adjust, |
8660 | guard_size - guard_used_by_caller) | |
cd1bef27 JL |
8661 | && known_lt (final_adjust, guard_used_by_caller)) |
8662 | { | |
8663 | dump_stack_clash_frame_info (NO_PROBE_SMALL_FRAME, true); | |
8664 | } | |
8665 | } | |
8666 | ||
cd1bef27 JL |
8667 | /* If SIZE is not large enough to require probing, just adjust the stack and |
8668 | exit. */ | |
eb471ba3 | 8669 | if (known_lt (poly_size, min_probe_threshold) |
cd1bef27 JL |
8670 | || !flag_stack_clash_protection) |
8671 | { | |
8672 | aarch64_sub_sp (temp1, temp2, poly_size, frame_related_p); | |
8673 | return; | |
8674 | } | |
8675 | ||
eb471ba3 TC |
8676 | HOST_WIDE_INT size; |
8677 | /* Handle the SVE non-constant case first. */ | |
8678 | if (!poly_size.is_constant (&size)) | |
8679 | { | |
8680 | if (dump_file) | |
8681 | { | |
8682 | fprintf (dump_file, "Stack clash SVE prologue: "); | |
8683 | print_dec (poly_size, dump_file); | |
8684 | fprintf (dump_file, " bytes, dynamic probing will be required.\n"); | |
8685 | } | |
8686 | ||
8687 | /* First calculate the amount of bytes we're actually spilling. */ | |
8688 | aarch64_add_offset (Pmode, temp1, CONST0_RTX (Pmode), | |
8689 | poly_size, temp1, temp2, false, true); | |
8690 | ||
8691 | rtx_insn *insn = get_last_insn (); | |
8692 | ||
8693 | if (frame_related_p) | |
8694 | { | |
8695 | /* This is done to provide unwinding information for the stack | |
8696 | adjustments we're about to do, however to prevent the optimizers | |
143d3b15 | 8697 | from removing the R11 move and leaving the CFA note (which would be |
eb471ba3 TC |
8698 | very wrong) we tie the old and new stack pointer together. |
8699 | The tie will expand to nothing but the optimizers will not touch | |
8700 | the instruction. */ | |
143d3b15 | 8701 | rtx stack_ptr_copy = gen_rtx_REG (Pmode, STACK_CLASH_SVE_CFA_REGNUM); |
eb471ba3 TC |
8702 | emit_move_insn (stack_ptr_copy, stack_pointer_rtx); |
8703 | emit_insn (gen_stack_tie (stack_ptr_copy, stack_pointer_rtx)); | |
8704 | ||
8705 | /* We want the CFA independent of the stack pointer for the | |
8706 | duration of the loop. */ | |
8707 | add_reg_note (insn, REG_CFA_DEF_CFA, stack_ptr_copy); | |
8708 | RTX_FRAME_RELATED_P (insn) = 1; | |
8709 | } | |
8710 | ||
8711 | rtx probe_const = gen_int_mode (min_probe_threshold, Pmode); | |
8712 | rtx guard_const = gen_int_mode (guard_size, Pmode); | |
8713 | ||
8714 | insn = emit_insn (gen_probe_sve_stack_clash (Pmode, stack_pointer_rtx, | |
8715 | stack_pointer_rtx, temp1, | |
8716 | probe_const, guard_const)); | |
8717 | ||
8718 | /* Now reset the CFA register if needed. */ | |
8719 | if (frame_related_p) | |
8720 | { | |
8721 | add_reg_note (insn, REG_CFA_DEF_CFA, | |
8722 | gen_rtx_PLUS (Pmode, stack_pointer_rtx, | |
8723 | gen_int_mode (poly_size, Pmode))); | |
8724 | RTX_FRAME_RELATED_P (insn) = 1; | |
8725 | } | |
8726 | ||
8727 | return; | |
8728 | } | |
8729 | ||
cd1bef27 JL |
8730 | if (dump_file) |
8731 | fprintf (dump_file, | |
eb471ba3 TC |
8732 | "Stack clash AArch64 prologue: " HOST_WIDE_INT_PRINT_DEC |
8733 | " bytes, probing will be required.\n", size); | |
cd1bef27 JL |
8734 | |
8735 | /* Round size to the nearest multiple of guard_size, and calculate the | |
8736 | residual as the difference between the original size and the rounded | |
8737 | size. */ | |
8738 | HOST_WIDE_INT rounded_size = ROUND_DOWN (size, guard_size); | |
8739 | HOST_WIDE_INT residual = size - rounded_size; | |
8740 | ||
8741 | /* We can handle a small number of allocations/probes inline. Otherwise | |
8742 | punt to a loop. */ | |
8743 | if (rounded_size <= STACK_CLASH_MAX_UNROLL_PAGES * guard_size) | |
8744 | { | |
8745 | for (HOST_WIDE_INT i = 0; i < rounded_size; i += guard_size) | |
8746 | { | |
8747 | aarch64_sub_sp (NULL, temp2, guard_size, true); | |
8748 | emit_stack_probe (plus_constant (Pmode, stack_pointer_rtx, | |
8749 | guard_used_by_caller)); | |
8750 | emit_insn (gen_blockage ()); | |
8751 | } | |
8752 | dump_stack_clash_frame_info (PROBE_INLINE, size != rounded_size); | |
8753 | } | |
8754 | else | |
8755 | { | |
8756 | /* Compute the ending address. */ | |
8757 | aarch64_add_offset (Pmode, temp1, stack_pointer_rtx, -rounded_size, | |
8758 | temp1, NULL, false, true); | |
8759 | rtx_insn *insn = get_last_insn (); | |
8760 | ||
8761 | /* For the initial allocation, we don't have a frame pointer | |
8762 | set up, so we always need CFI notes. If we're doing the | |
8763 | final allocation, then we may have a frame pointer, in which | |
8764 | case it is the CFA, otherwise we need CFI notes. | |
8765 | ||
8766 | We can determine which allocation we are doing by looking at | |
8767 | the value of FRAME_RELATED_P since the final allocations are not | |
8768 | frame related. */ | |
8769 | if (frame_related_p) | |
8770 | { | |
8771 | /* We want the CFA independent of the stack pointer for the | |
8772 | duration of the loop. */ | |
8773 | add_reg_note (insn, REG_CFA_DEF_CFA, | |
8774 | plus_constant (Pmode, temp1, rounded_size)); | |
8775 | RTX_FRAME_RELATED_P (insn) = 1; | |
8776 | } | |
8777 | ||
8778 | /* This allocates and probes the stack. Note that this re-uses some of | |
8779 | the existing Ada stack protection code. However we are guaranteed not | |
8780 | to enter the non loop or residual branches of that code. | |
8781 | ||
8782 | The non-loop part won't be entered because if our allocation amount | |
8783 | doesn't require a loop, the case above would handle it. | |
8784 | ||
8785 | The residual amount won't be entered because TEMP1 is a mutliple of | |
8786 | the allocation size. The residual will always be 0. As such, the only | |
8787 | part we are actually using from that code is the loop setup. The | |
8788 | actual probing is done in aarch64_output_probe_stack_range. */ | |
8789 | insn = emit_insn (gen_probe_stack_range (stack_pointer_rtx, | |
8790 | stack_pointer_rtx, temp1)); | |
8791 | ||
8792 | /* Now reset the CFA register if needed. */ | |
8793 | if (frame_related_p) | |
8794 | { | |
8795 | add_reg_note (insn, REG_CFA_DEF_CFA, | |
8796 | plus_constant (Pmode, stack_pointer_rtx, rounded_size)); | |
8797 | RTX_FRAME_RELATED_P (insn) = 1; | |
8798 | } | |
8799 | ||
8800 | emit_insn (gen_blockage ()); | |
8801 | dump_stack_clash_frame_info (PROBE_LOOP, size != rounded_size); | |
8802 | } | |
8803 | ||
8804 | /* Handle any residuals. Residuals of at least MIN_PROBE_THRESHOLD have to | |
8805 | be probed. This maintains the requirement that each page is probed at | |
8806 | least once. For initial probing we probe only if the allocation is | |
8807 | more than GUARD_SIZE - buffer, and for the outgoing arguments we probe | |
8808 | if the amount is larger than buffer. GUARD_SIZE - buffer + buffer == | |
8809 | GUARD_SIZE. This works that for any allocation that is large enough to | |
8810 | trigger a probe here, we'll have at least one, and if they're not large | |
8811 | enough for this code to emit anything for them, The page would have been | |
8812 | probed by the saving of FP/LR either by this function or any callees. If | |
8813 | we don't have any callees then we won't have more stack adjustments and so | |
8814 | are still safe. */ | |
8815 | if (residual) | |
8816 | { | |
8817 | HOST_WIDE_INT residual_probe_offset = guard_used_by_caller; | |
8818 | /* If we're doing final adjustments, and we've done any full page | |
8819 | allocations then any residual needs to be probed. */ | |
8820 | if (final_adjustment_p && rounded_size != 0) | |
8821 | min_probe_threshold = 0; | |
8822 | /* If doing a small final adjustment, we always probe at offset 0. | |
8823 | This is done to avoid issues when LR is not at position 0 or when | |
8824 | the final adjustment is smaller than the probing offset. */ | |
8825 | else if (final_adjustment_p && rounded_size == 0) | |
8826 | residual_probe_offset = 0; | |
8827 | ||
8828 | aarch64_sub_sp (temp1, temp2, residual, frame_related_p); | |
8829 | if (residual >= min_probe_threshold) | |
8830 | { | |
8831 | if (dump_file) | |
8832 | fprintf (dump_file, | |
8833 | "Stack clash AArch64 prologue residuals: " | |
8834 | HOST_WIDE_INT_PRINT_DEC " bytes, probing will be required." | |
8835 | "\n", residual); | |
8836 | ||
8837 | emit_stack_probe (plus_constant (Pmode, stack_pointer_rtx, | |
8838 | residual_probe_offset)); | |
8839 | emit_insn (gen_blockage ()); | |
8840 | } | |
8841 | } | |
8842 | } | |
8843 | ||
a0d0b980 SE |
8844 | /* Return 1 if the register is used by the epilogue. We need to say the |
8845 | return register is used, but only after epilogue generation is complete. | |
8846 | Note that in the case of sibcalls, the values "used by the epilogue" are | |
8847 | considered live at the start of the called function. | |
8848 | ||
8849 | For SIMD functions we need to return 1 for FP registers that are saved and | |
8850 | restored by a function but are not zero in call_used_regs. If we do not do | |
8851 | this optimizations may remove the restore of the register. */ | |
8852 | ||
8853 | int | |
8854 | aarch64_epilogue_uses (int regno) | |
8855 | { | |
8856 | if (epilogue_completed) | |
8857 | { | |
8858 | if (regno == LR_REGNUM) | |
8859 | return 1; | |
a0d0b980 SE |
8860 | } |
8861 | return 0; | |
8862 | } | |
8863 | ||
43e9d192 IB |
8864 | /* AArch64 stack frames generated by this compiler look like: |
8865 | ||
8866 | +-------------------------------+ | |
8867 | | | | |
8868 | | incoming stack arguments | | |
8869 | | | | |
34834420 MS |
8870 | +-------------------------------+ |
8871 | | | <-- incoming stack pointer (aligned) | |
43e9d192 IB |
8872 | | callee-allocated save area | |
8873 | | for register varargs | | |
8874 | | | | |
34834420 MS |
8875 | +-------------------------------+ |
8876 | | local variables | <-- frame_pointer_rtx | |
43e9d192 IB |
8877 | | | |
8878 | +-------------------------------+ | |
cd1bef27 | 8879 | | padding | \ |
454fdba9 | 8880 | +-------------------------------+ | |
454fdba9 | 8881 | | callee-saved registers | | frame.saved_regs_size |
454fdba9 RL |
8882 | +-------------------------------+ | |
8883 | | LR' | | | |
8884 | +-------------------------------+ | | |
c600df9a RS |
8885 | | FP' | | |
8886 | +-------------------------------+ |<- hard_frame_pointer_rtx (aligned) | |
8887 | | SVE vector registers | | \ | |
8888 | +-------------------------------+ | | below_hard_fp_saved_regs_size | |
8889 | | SVE predicate registers | / / | |
8890 | +-------------------------------+ | |
43e9d192 IB |
8891 | | dynamic allocation | |
8892 | +-------------------------------+ | |
34834420 MS |
8893 | | padding | |
8894 | +-------------------------------+ | |
8895 | | outgoing stack arguments | <-- arg_pointer | |
8896 | | | | |
8897 | +-------------------------------+ | |
8898 | | | <-- stack_pointer_rtx (aligned) | |
43e9d192 | 8899 | |
34834420 MS |
8900 | Dynamic stack allocations via alloca() decrease stack_pointer_rtx |
8901 | but leave frame_pointer_rtx and hard_frame_pointer_rtx | |
cd1bef27 JL |
8902 | unchanged. |
8903 | ||
8904 | By default for stack-clash we assume the guard is at least 64KB, but this | |
8905 | value is configurable to either 4KB or 64KB. We also force the guard size to | |
8906 | be the same as the probing interval and both values are kept in sync. | |
8907 | ||
8908 | With those assumptions the callee can allocate up to 63KB (or 3KB depending | |
8909 | on the guard size) of stack space without probing. | |
8910 | ||
8911 | When probing is needed, we emit a probe at the start of the prologue | |
8912 | and every PARAM_STACK_CLASH_PROTECTION_GUARD_SIZE bytes thereafter. | |
8913 | ||
8914 | We have to track how much space has been allocated and the only stores | |
8915 | to the stack we track as implicit probes are the FP/LR stores. | |
8916 | ||
8917 | For outgoing arguments we probe if the size is larger than 1KB, such that | |
143d3b15 TC |
8918 | the ABI specified buffer is maintained for the next callee. |
8919 | ||
8920 | The following registers are reserved during frame layout and should not be | |
8921 | used for any other purpose: | |
8922 | ||
c600df9a RS |
8923 | - r11: Used by stack clash protection when SVE is enabled, and also |
8924 | as an anchor register when saving and restoring registers | |
143d3b15 TC |
8925 | - r12(EP0) and r13(EP1): Used as temporaries for stack adjustment. |
8926 | - r14 and r15: Used for speculation tracking. | |
8927 | - r16(IP0), r17(IP1): Used by indirect tailcalls. | |
8928 | - r30(LR), r29(FP): Used by standard frame layout. | |
8929 | ||
8930 | These registers must be avoided in frame layout related code unless the | |
8931 | explicit intention is to interact with one of the features listed above. */ | |
43e9d192 IB |
8932 | |
8933 | /* Generate the prologue instructions for entry into a function. | |
8934 | Establish the stack frame by decreasing the stack pointer with a | |
8935 | properly calculated size and, if necessary, create a frame record | |
8936 | filled with the values of LR and previous frame pointer. The | |
6991c977 | 8937 | current FP is also set up if it is in use. */ |
43e9d192 IB |
8938 | |
8939 | void | |
8940 | aarch64_expand_prologue (void) | |
8941 | { | |
6a70badb RS |
8942 | poly_int64 frame_size = cfun->machine->frame.frame_size; |
8943 | poly_int64 initial_adjust = cfun->machine->frame.initial_adjust; | |
71bfb77a | 8944 | HOST_WIDE_INT callee_adjust = cfun->machine->frame.callee_adjust; |
6a70badb RS |
8945 | poly_int64 final_adjust = cfun->machine->frame.final_adjust; |
8946 | poly_int64 callee_offset = cfun->machine->frame.callee_offset; | |
c600df9a RS |
8947 | poly_int64 sve_callee_adjust = cfun->machine->frame.sve_callee_adjust; |
8948 | poly_int64 below_hard_fp_saved_regs_size | |
8949 | = cfun->machine->frame.below_hard_fp_saved_regs_size; | |
71bfb77a WD |
8950 | unsigned reg1 = cfun->machine->frame.wb_candidate1; |
8951 | unsigned reg2 = cfun->machine->frame.wb_candidate2; | |
204d2c03 | 8952 | bool emit_frame_chain = cfun->machine->frame.emit_frame_chain; |
71bfb77a | 8953 | rtx_insn *insn; |
43e9d192 | 8954 | |
c600df9a RS |
8955 | if (flag_stack_clash_protection && known_eq (callee_adjust, 0)) |
8956 | { | |
8957 | /* Fold the SVE allocation into the initial allocation. | |
8958 | We don't do this in aarch64_layout_arg to avoid pessimizing | |
8959 | the epilogue code. */ | |
8960 | initial_adjust += sve_callee_adjust; | |
8961 | sve_callee_adjust = 0; | |
8962 | } | |
8963 | ||
db58fd89 JW |
8964 | /* Sign return address for functions. */ |
8965 | if (aarch64_return_address_signing_enabled ()) | |
27169e45 | 8966 | { |
8fc16d72 ST |
8967 | switch (aarch64_ra_sign_key) |
8968 | { | |
8969 | case AARCH64_KEY_A: | |
8970 | insn = emit_insn (gen_paciasp ()); | |
8971 | break; | |
8972 | case AARCH64_KEY_B: | |
8973 | insn = emit_insn (gen_pacibsp ()); | |
8974 | break; | |
8975 | default: | |
8976 | gcc_unreachable (); | |
8977 | } | |
27169e45 JW |
8978 | add_reg_note (insn, REG_CFA_TOGGLE_RA_MANGLE, const0_rtx); |
8979 | RTX_FRAME_RELATED_P (insn) = 1; | |
8980 | } | |
db58fd89 | 8981 | |
dd991abb | 8982 | if (flag_stack_usage_info) |
6a70badb | 8983 | current_function_static_stack_size = constant_lower_bound (frame_size); |
43e9d192 | 8984 | |
a3eb8a52 EB |
8985 | if (flag_stack_check == STATIC_BUILTIN_STACK_CHECK) |
8986 | { | |
8987 | if (crtl->is_leaf && !cfun->calls_alloca) | |
8988 | { | |
6a70badb RS |
8989 | if (maybe_gt (frame_size, PROBE_INTERVAL) |
8990 | && maybe_gt (frame_size, get_stack_check_protect ())) | |
8c1dd970 JL |
8991 | aarch64_emit_probe_stack_range (get_stack_check_protect (), |
8992 | (frame_size | |
8993 | - get_stack_check_protect ())); | |
a3eb8a52 | 8994 | } |
6a70badb | 8995 | else if (maybe_gt (frame_size, 0)) |
8c1dd970 | 8996 | aarch64_emit_probe_stack_range (get_stack_check_protect (), frame_size); |
a3eb8a52 EB |
8997 | } |
8998 | ||
901e66e0 SD |
8999 | rtx tmp0_rtx = gen_rtx_REG (Pmode, EP0_REGNUM); |
9000 | rtx tmp1_rtx = gen_rtx_REG (Pmode, EP1_REGNUM); | |
f5470a77 | 9001 | |
cd1bef27 JL |
9002 | /* In theory we should never have both an initial adjustment |
9003 | and a callee save adjustment. Verify that is the case since the | |
9004 | code below does not handle it for -fstack-clash-protection. */ | |
9005 | gcc_assert (known_eq (initial_adjust, 0) || callee_adjust == 0); | |
9006 | ||
9007 | /* Will only probe if the initial adjustment is larger than the guard | |
9008 | less the amount of the guard reserved for use by the caller's | |
9009 | outgoing args. */ | |
901e66e0 | 9010 | aarch64_allocate_and_probe_stack_space (tmp0_rtx, tmp1_rtx, initial_adjust, |
cd1bef27 | 9011 | true, false); |
43e9d192 | 9012 | |
71bfb77a WD |
9013 | if (callee_adjust != 0) |
9014 | aarch64_push_regs (reg1, reg2, callee_adjust); | |
43e9d192 | 9015 | |
c600df9a RS |
9016 | /* The offset of the frame chain record (if any) from the current SP. */ |
9017 | poly_int64 chain_offset = (initial_adjust + callee_adjust | |
9018 | - cfun->machine->frame.hard_fp_offset); | |
9019 | gcc_assert (known_ge (chain_offset, 0)); | |
9020 | ||
9021 | /* The offset of the bottom of the save area from the current SP. */ | |
9022 | poly_int64 saved_regs_offset = chain_offset - below_hard_fp_saved_regs_size; | |
9023 | ||
204d2c03 | 9024 | if (emit_frame_chain) |
43e9d192 | 9025 | { |
71bfb77a | 9026 | if (callee_adjust == 0) |
43cacb12 RS |
9027 | { |
9028 | reg1 = R29_REGNUM; | |
9029 | reg2 = R30_REGNUM; | |
c600df9a RS |
9030 | aarch64_save_callee_saves (saved_regs_offset, reg1, reg2, |
9031 | false, false); | |
43cacb12 | 9032 | } |
c600df9a RS |
9033 | else |
9034 | gcc_assert (known_eq (chain_offset, 0)); | |
f5470a77 | 9035 | aarch64_add_offset (Pmode, hard_frame_pointer_rtx, |
c600df9a | 9036 | stack_pointer_rtx, chain_offset, |
901e66e0 | 9037 | tmp1_rtx, tmp0_rtx, frame_pointer_needed); |
43cacb12 RS |
9038 | if (frame_pointer_needed && !frame_size.is_constant ()) |
9039 | { | |
9040 | /* Variable-sized frames need to describe the save slot | |
9041 | address using DW_CFA_expression rather than DW_CFA_offset. | |
9042 | This means that, without taking further action, the | |
9043 | locations of the registers that we've already saved would | |
9044 | remain based on the stack pointer even after we redefine | |
9045 | the CFA based on the frame pointer. We therefore need new | |
9046 | DW_CFA_expressions to re-express the save slots with addresses | |
9047 | based on the frame pointer. */ | |
9048 | rtx_insn *insn = get_last_insn (); | |
9049 | gcc_assert (RTX_FRAME_RELATED_P (insn)); | |
9050 | ||
9051 | /* Add an explicit CFA definition if this was previously | |
9052 | implicit. */ | |
9053 | if (!find_reg_note (insn, REG_CFA_ADJUST_CFA, NULL_RTX)) | |
9054 | { | |
9055 | rtx src = plus_constant (Pmode, stack_pointer_rtx, | |
9056 | callee_offset); | |
9057 | add_reg_note (insn, REG_CFA_ADJUST_CFA, | |
9058 | gen_rtx_SET (hard_frame_pointer_rtx, src)); | |
9059 | } | |
9060 | ||
9061 | /* Change the save slot expressions for the registers that | |
9062 | we've already saved. */ | |
c600df9a RS |
9063 | aarch64_add_cfa_expression (insn, regno_reg_rtx[reg2], |
9064 | hard_frame_pointer_rtx, UNITS_PER_WORD); | |
9065 | aarch64_add_cfa_expression (insn, regno_reg_rtx[reg1], | |
9066 | hard_frame_pointer_rtx, 0); | |
43cacb12 | 9067 | } |
71bfb77a | 9068 | emit_insn (gen_stack_tie (stack_pointer_rtx, hard_frame_pointer_rtx)); |
43e9d192 | 9069 | } |
71bfb77a | 9070 | |
c600df9a RS |
9071 | aarch64_save_callee_saves (saved_regs_offset, R0_REGNUM, R30_REGNUM, |
9072 | callee_adjust != 0 || emit_frame_chain, | |
9073 | emit_frame_chain); | |
9074 | if (maybe_ne (sve_callee_adjust, 0)) | |
9075 | { | |
9076 | gcc_assert (!flag_stack_clash_protection | |
9077 | || known_eq (initial_adjust, 0)); | |
9078 | aarch64_allocate_and_probe_stack_space (tmp1_rtx, tmp0_rtx, | |
9079 | sve_callee_adjust, | |
9080 | !frame_pointer_needed, false); | |
9081 | saved_regs_offset += sve_callee_adjust; | |
9082 | } | |
9083 | aarch64_save_callee_saves (saved_regs_offset, P0_REGNUM, P15_REGNUM, | |
9084 | false, emit_frame_chain); | |
9085 | aarch64_save_callee_saves (saved_regs_offset, V0_REGNUM, V31_REGNUM, | |
9086 | callee_adjust != 0 || emit_frame_chain, | |
9087 | emit_frame_chain); | |
cd1bef27 JL |
9088 | |
9089 | /* We may need to probe the final adjustment if it is larger than the guard | |
9090 | that is assumed by the called. */ | |
901e66e0 | 9091 | aarch64_allocate_and_probe_stack_space (tmp1_rtx, tmp0_rtx, final_adjust, |
cd1bef27 | 9092 | !frame_pointer_needed, true); |
43e9d192 IB |
9093 | } |
9094 | ||
4f942779 RL |
9095 | /* Return TRUE if we can use a simple_return insn. |
9096 | ||
9097 | This function checks whether the callee saved stack is empty, which | |
9098 | means no restore actions are need. The pro_and_epilogue will use | |
9099 | this to check whether shrink-wrapping opt is feasible. */ | |
9100 | ||
9101 | bool | |
9102 | aarch64_use_return_insn_p (void) | |
9103 | { | |
9104 | if (!reload_completed) | |
9105 | return false; | |
9106 | ||
9107 | if (crtl->profile) | |
9108 | return false; | |
9109 | ||
6a70badb | 9110 | return known_eq (cfun->machine->frame.frame_size, 0); |
4f942779 RL |
9111 | } |
9112 | ||
71bfb77a WD |
9113 | /* Generate the epilogue instructions for returning from a function. |
9114 | This is almost exactly the reverse of the prolog sequence, except | |
9115 | that we need to insert barriers to avoid scheduling loads that read | |
9116 | from a deallocated stack, and we optimize the unwind records by | |
9117 | emitting them all together if possible. */ | |
43e9d192 IB |
9118 | void |
9119 | aarch64_expand_epilogue (bool for_sibcall) | |
9120 | { | |
6a70badb | 9121 | poly_int64 initial_adjust = cfun->machine->frame.initial_adjust; |
71bfb77a | 9122 | HOST_WIDE_INT callee_adjust = cfun->machine->frame.callee_adjust; |
6a70badb RS |
9123 | poly_int64 final_adjust = cfun->machine->frame.final_adjust; |
9124 | poly_int64 callee_offset = cfun->machine->frame.callee_offset; | |
c600df9a RS |
9125 | poly_int64 sve_callee_adjust = cfun->machine->frame.sve_callee_adjust; |
9126 | poly_int64 below_hard_fp_saved_regs_size | |
9127 | = cfun->machine->frame.below_hard_fp_saved_regs_size; | |
71bfb77a WD |
9128 | unsigned reg1 = cfun->machine->frame.wb_candidate1; |
9129 | unsigned reg2 = cfun->machine->frame.wb_candidate2; | |
9130 | rtx cfi_ops = NULL; | |
9131 | rtx_insn *insn; | |
901e66e0 SD |
9132 | /* A stack clash protection prologue may not have left EP0_REGNUM or |
9133 | EP1_REGNUM in a usable state. The same is true for allocations | |
43cacb12 | 9134 | with an SVE component, since we then need both temporary registers |
cd1bef27 JL |
9135 | for each allocation. For stack clash we are in a usable state if |
9136 | the adjustment is less than GUARD_SIZE - GUARD_USED_BY_CALLER. */ | |
9137 | HOST_WIDE_INT guard_size | |
028d4092 | 9138 | = 1 << param_stack_clash_protection_guard_size; |
cd1bef27 JL |
9139 | HOST_WIDE_INT guard_used_by_caller = STACK_CLASH_CALLER_GUARD; |
9140 | ||
c600df9a RS |
9141 | /* We can re-use the registers when: |
9142 | ||
9143 | (a) the deallocation amount is the same as the corresponding | |
9144 | allocation amount (which is false if we combine the initial | |
9145 | and SVE callee save allocations in the prologue); and | |
9146 | ||
9147 | (b) the allocation amount doesn't need a probe (which is false | |
9148 | if the amount is guard_size - guard_used_by_caller or greater). | |
9149 | ||
9150 | In such situations the register should remain live with the correct | |
cd1bef27 | 9151 | value. */ |
43cacb12 | 9152 | bool can_inherit_p = (initial_adjust.is_constant () |
c600df9a | 9153 | && final_adjust.is_constant () |
cd1bef27 | 9154 | && (!flag_stack_clash_protection |
c600df9a RS |
9155 | || (known_lt (initial_adjust, |
9156 | guard_size - guard_used_by_caller) | |
9157 | && known_eq (sve_callee_adjust, 0)))); | |
44c0e7b9 | 9158 | |
71bfb77a | 9159 | /* We need to add memory barrier to prevent read from deallocated stack. */ |
6a70badb RS |
9160 | bool need_barrier_p |
9161 | = maybe_ne (get_frame_size () | |
9162 | + cfun->machine->frame.saved_varargs_size, 0); | |
43e9d192 | 9163 | |
71bfb77a | 9164 | /* Emit a barrier to prevent loads from a deallocated stack. */ |
6a70badb RS |
9165 | if (maybe_gt (final_adjust, crtl->outgoing_args_size) |
9166 | || cfun->calls_alloca | |
8144a493 | 9167 | || crtl->calls_eh_return) |
43e9d192 | 9168 | { |
71bfb77a WD |
9169 | emit_insn (gen_stack_tie (stack_pointer_rtx, stack_pointer_rtx)); |
9170 | need_barrier_p = false; | |
9171 | } | |
7e8c2bd5 | 9172 | |
71bfb77a WD |
9173 | /* Restore the stack pointer from the frame pointer if it may not |
9174 | be the same as the stack pointer. */ | |
901e66e0 SD |
9175 | rtx tmp0_rtx = gen_rtx_REG (Pmode, EP0_REGNUM); |
9176 | rtx tmp1_rtx = gen_rtx_REG (Pmode, EP1_REGNUM); | |
6a70badb RS |
9177 | if (frame_pointer_needed |
9178 | && (maybe_ne (final_adjust, 0) || cfun->calls_alloca)) | |
f5470a77 RS |
9179 | /* If writeback is used when restoring callee-saves, the CFA |
9180 | is restored on the instruction doing the writeback. */ | |
9181 | aarch64_add_offset (Pmode, stack_pointer_rtx, | |
c600df9a RS |
9182 | hard_frame_pointer_rtx, |
9183 | -callee_offset - below_hard_fp_saved_regs_size, | |
901e66e0 | 9184 | tmp1_rtx, tmp0_rtx, callee_adjust == 0); |
71bfb77a | 9185 | else |
cd1bef27 JL |
9186 | /* The case where we need to re-use the register here is very rare, so |
9187 | avoid the complicated condition and just always emit a move if the | |
9188 | immediate doesn't fit. */ | |
901e66e0 | 9189 | aarch64_add_sp (tmp1_rtx, tmp0_rtx, final_adjust, true); |
43e9d192 | 9190 | |
c600df9a RS |
9191 | /* Restore the vector registers before the predicate registers, |
9192 | so that we can use P4 as a temporary for big-endian SVE frames. */ | |
9193 | aarch64_restore_callee_saves (callee_offset, V0_REGNUM, V31_REGNUM, | |
9194 | callee_adjust != 0, &cfi_ops); | |
9195 | aarch64_restore_callee_saves (callee_offset, P0_REGNUM, P15_REGNUM, | |
9196 | false, &cfi_ops); | |
9197 | if (maybe_ne (sve_callee_adjust, 0)) | |
9198 | aarch64_add_sp (NULL_RTX, NULL_RTX, sve_callee_adjust, true); | |
9199 | aarch64_restore_callee_saves (callee_offset - sve_callee_adjust, | |
9200 | R0_REGNUM, R30_REGNUM, | |
71bfb77a | 9201 | callee_adjust != 0, &cfi_ops); |
43e9d192 | 9202 | |
71bfb77a WD |
9203 | if (need_barrier_p) |
9204 | emit_insn (gen_stack_tie (stack_pointer_rtx, stack_pointer_rtx)); | |
9205 | ||
9206 | if (callee_adjust != 0) | |
9207 | aarch64_pop_regs (reg1, reg2, callee_adjust, &cfi_ops); | |
9208 | ||
1ccbfffb RS |
9209 | /* If we have no register restore information, the CFA must have been |
9210 | defined in terms of the stack pointer since the end of the prologue. */ | |
9211 | gcc_assert (cfi_ops || !frame_pointer_needed); | |
9212 | ||
9213 | if (cfi_ops && (callee_adjust != 0 || maybe_gt (initial_adjust, 65536))) | |
71bfb77a WD |
9214 | { |
9215 | /* Emit delayed restores and set the CFA to be SP + initial_adjust. */ | |
89ac681e | 9216 | insn = get_last_insn (); |
71bfb77a WD |
9217 | rtx new_cfa = plus_constant (Pmode, stack_pointer_rtx, initial_adjust); |
9218 | REG_NOTES (insn) = alloc_reg_note (REG_CFA_DEF_CFA, new_cfa, cfi_ops); | |
43e9d192 | 9219 | RTX_FRAME_RELATED_P (insn) = 1; |
71bfb77a | 9220 | cfi_ops = NULL; |
43e9d192 IB |
9221 | } |
9222 | ||
901e66e0 SD |
9223 | /* Liveness of EP0_REGNUM can not be trusted across function calls either, so |
9224 | add restriction on emit_move optimization to leaf functions. */ | |
9225 | aarch64_add_sp (tmp0_rtx, tmp1_rtx, initial_adjust, | |
9226 | (!can_inherit_p || !crtl->is_leaf | |
9227 | || df_regs_ever_live_p (EP0_REGNUM))); | |
7e8c2bd5 | 9228 | |
71bfb77a WD |
9229 | if (cfi_ops) |
9230 | { | |
9231 | /* Emit delayed restores and reset the CFA to be SP. */ | |
9232 | insn = get_last_insn (); | |
9233 | cfi_ops = alloc_reg_note (REG_CFA_DEF_CFA, stack_pointer_rtx, cfi_ops); | |
9234 | REG_NOTES (insn) = cfi_ops; | |
9235 | RTX_FRAME_RELATED_P (insn) = 1; | |
dd991abb RH |
9236 | } |
9237 | ||
db58fd89 JW |
9238 | /* We prefer to emit the combined return/authenticate instruction RETAA, |
9239 | however there are three cases in which we must instead emit an explicit | |
9240 | authentication instruction. | |
9241 | ||
9242 | 1) Sibcalls don't return in a normal way, so if we're about to call one | |
9243 | we must authenticate. | |
9244 | ||
9245 | 2) The RETAA instruction is not available before ARMv8.3-A, so if we are | |
9246 | generating code for !TARGET_ARMV8_3 we can't use it and must | |
9247 | explicitly authenticate. | |
db58fd89 JW |
9248 | */ |
9249 | if (aarch64_return_address_signing_enabled () | |
14d31404 | 9250 | && (for_sibcall || !TARGET_ARMV8_3)) |
27169e45 | 9251 | { |
8fc16d72 ST |
9252 | switch (aarch64_ra_sign_key) |
9253 | { | |
9254 | case AARCH64_KEY_A: | |
9255 | insn = emit_insn (gen_autiasp ()); | |
9256 | break; | |
9257 | case AARCH64_KEY_B: | |
9258 | insn = emit_insn (gen_autibsp ()); | |
9259 | break; | |
9260 | default: | |
9261 | gcc_unreachable (); | |
9262 | } | |
27169e45 JW |
9263 | add_reg_note (insn, REG_CFA_TOGGLE_RA_MANGLE, const0_rtx); |
9264 | RTX_FRAME_RELATED_P (insn) = 1; | |
9265 | } | |
db58fd89 | 9266 | |
dd991abb | 9267 | /* Stack adjustment for exception handler. */ |
b5b9147d | 9268 | if (crtl->calls_eh_return && !for_sibcall) |
dd991abb RH |
9269 | { |
9270 | /* We need to unwind the stack by the offset computed by | |
9271 | EH_RETURN_STACKADJ_RTX. We have already reset the CFA | |
9272 | to be SP; letting the CFA move during this adjustment | |
9273 | is just as correct as retaining the CFA from the body | |
9274 | of the function. Therefore, do nothing special. */ | |
9275 | emit_insn (gen_add2_insn (stack_pointer_rtx, EH_RETURN_STACKADJ_RTX)); | |
43e9d192 IB |
9276 | } |
9277 | ||
9278 | emit_use (gen_rtx_REG (DImode, LR_REGNUM)); | |
9279 | if (!for_sibcall) | |
9280 | emit_jump_insn (ret_rtx); | |
9281 | } | |
9282 | ||
8144a493 WD |
9283 | /* Implement EH_RETURN_HANDLER_RTX. EH returns need to either return |
9284 | normally or return to a previous frame after unwinding. | |
1c960e02 | 9285 | |
8144a493 WD |
9286 | An EH return uses a single shared return sequence. The epilogue is |
9287 | exactly like a normal epilogue except that it has an extra input | |
9288 | register (EH_RETURN_STACKADJ_RTX) which contains the stack adjustment | |
9289 | that must be applied after the frame has been destroyed. An extra label | |
9290 | is inserted before the epilogue which initializes this register to zero, | |
9291 | and this is the entry point for a normal return. | |
43e9d192 | 9292 | |
8144a493 WD |
9293 | An actual EH return updates the return address, initializes the stack |
9294 | adjustment and jumps directly into the epilogue (bypassing the zeroing | |
9295 | of the adjustment). Since the return address is typically saved on the | |
9296 | stack when a function makes a call, the saved LR must be updated outside | |
9297 | the epilogue. | |
43e9d192 | 9298 | |
8144a493 WD |
9299 | This poses problems as the store is generated well before the epilogue, |
9300 | so the offset of LR is not known yet. Also optimizations will remove the | |
9301 | store as it appears dead, even after the epilogue is generated (as the | |
9302 | base or offset for loading LR is different in many cases). | |
43e9d192 | 9303 | |
8144a493 WD |
9304 | To avoid these problems this implementation forces the frame pointer |
9305 | in eh_return functions so that the location of LR is fixed and known early. | |
9306 | It also marks the store volatile, so no optimization is permitted to | |
9307 | remove the store. */ | |
9308 | rtx | |
9309 | aarch64_eh_return_handler_rtx (void) | |
9310 | { | |
9311 | rtx tmp = gen_frame_mem (Pmode, | |
9312 | plus_constant (Pmode, hard_frame_pointer_rtx, UNITS_PER_WORD)); | |
43e9d192 | 9313 | |
8144a493 WD |
9314 | /* Mark the store volatile, so no optimization is permitted to remove it. */ |
9315 | MEM_VOLATILE_P (tmp) = true; | |
9316 | return tmp; | |
43e9d192 IB |
9317 | } |
9318 | ||
43e9d192 IB |
9319 | /* Output code to add DELTA to the first argument, and then jump |
9320 | to FUNCTION. Used for C++ multiple inheritance. */ | |
9321 | static void | |
9322 | aarch64_output_mi_thunk (FILE *file, tree thunk ATTRIBUTE_UNUSED, | |
9323 | HOST_WIDE_INT delta, | |
9324 | HOST_WIDE_INT vcall_offset, | |
9325 | tree function) | |
9326 | { | |
9327 | /* The this pointer is always in x0. Note that this differs from | |
9328 | Arm where the this pointer maybe bumped to r1 if r0 is required | |
9329 | to return a pointer to an aggregate. On AArch64 a result value | |
9330 | pointer will be in x8. */ | |
9331 | int this_regno = R0_REGNUM; | |
5d8a22a5 DM |
9332 | rtx this_rtx, temp0, temp1, addr, funexp; |
9333 | rtx_insn *insn; | |
6b5777c6 | 9334 | const char *fnname = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (thunk)); |
43e9d192 | 9335 | |
c904388d SD |
9336 | if (aarch64_bti_enabled ()) |
9337 | emit_insn (gen_bti_c()); | |
9338 | ||
75f1d6fc SN |
9339 | reload_completed = 1; |
9340 | emit_note (NOTE_INSN_PROLOGUE_END); | |
43e9d192 | 9341 | |
f5470a77 | 9342 | this_rtx = gen_rtx_REG (Pmode, this_regno); |
901e66e0 SD |
9343 | temp0 = gen_rtx_REG (Pmode, EP0_REGNUM); |
9344 | temp1 = gen_rtx_REG (Pmode, EP1_REGNUM); | |
f5470a77 | 9345 | |
43e9d192 | 9346 | if (vcall_offset == 0) |
43cacb12 | 9347 | aarch64_add_offset (Pmode, this_rtx, this_rtx, delta, temp1, temp0, false); |
43e9d192 IB |
9348 | else |
9349 | { | |
28514dda | 9350 | gcc_assert ((vcall_offset & (POINTER_BYTES - 1)) == 0); |
43e9d192 | 9351 | |
75f1d6fc SN |
9352 | addr = this_rtx; |
9353 | if (delta != 0) | |
9354 | { | |
9355 | if (delta >= -256 && delta < 256) | |
9356 | addr = gen_rtx_PRE_MODIFY (Pmode, this_rtx, | |
9357 | plus_constant (Pmode, this_rtx, delta)); | |
9358 | else | |
43cacb12 RS |
9359 | aarch64_add_offset (Pmode, this_rtx, this_rtx, delta, |
9360 | temp1, temp0, false); | |
43e9d192 IB |
9361 | } |
9362 | ||
28514dda YZ |
9363 | if (Pmode == ptr_mode) |
9364 | aarch64_emit_move (temp0, gen_rtx_MEM (ptr_mode, addr)); | |
9365 | else | |
9366 | aarch64_emit_move (temp0, | |
9367 | gen_rtx_ZERO_EXTEND (Pmode, | |
9368 | gen_rtx_MEM (ptr_mode, addr))); | |
75f1d6fc | 9369 | |
28514dda | 9370 | if (vcall_offset >= -256 && vcall_offset < 4096 * POINTER_BYTES) |
75f1d6fc | 9371 | addr = plus_constant (Pmode, temp0, vcall_offset); |
43e9d192 IB |
9372 | else |
9373 | { | |
f43657b4 JW |
9374 | aarch64_internal_mov_immediate (temp1, GEN_INT (vcall_offset), true, |
9375 | Pmode); | |
75f1d6fc | 9376 | addr = gen_rtx_PLUS (Pmode, temp0, temp1); |
43e9d192 IB |
9377 | } |
9378 | ||
28514dda YZ |
9379 | if (Pmode == ptr_mode) |
9380 | aarch64_emit_move (temp1, gen_rtx_MEM (ptr_mode,addr)); | |
9381 | else | |
9382 | aarch64_emit_move (temp1, | |
9383 | gen_rtx_SIGN_EXTEND (Pmode, | |
9384 | gen_rtx_MEM (ptr_mode, addr))); | |
9385 | ||
75f1d6fc | 9386 | emit_insn (gen_add2_insn (this_rtx, temp1)); |
43e9d192 IB |
9387 | } |
9388 | ||
75f1d6fc SN |
9389 | /* Generate a tail call to the target function. */ |
9390 | if (!TREE_USED (function)) | |
9391 | { | |
9392 | assemble_external (function); | |
9393 | TREE_USED (function) = 1; | |
9394 | } | |
9395 | funexp = XEXP (DECL_RTL (function), 0); | |
9396 | funexp = gen_rtx_MEM (FUNCTION_MODE, funexp); | |
08cc4d92 RS |
9397 | rtx callee_abi = gen_int_mode (fndecl_abi (function).id (), DImode); |
9398 | insn = emit_call_insn (gen_sibcall (funexp, const0_rtx, callee_abi)); | |
75f1d6fc SN |
9399 | SIBLING_CALL_P (insn) = 1; |
9400 | ||
9401 | insn = get_insns (); | |
9402 | shorten_branches (insn); | |
6b5777c6 MF |
9403 | |
9404 | assemble_start_function (thunk, fnname); | |
75f1d6fc SN |
9405 | final_start_function (insn, file, 1); |
9406 | final (insn, file, 1); | |
43e9d192 | 9407 | final_end_function (); |
6b5777c6 | 9408 | assemble_end_function (thunk, fnname); |
75f1d6fc SN |
9409 | |
9410 | /* Stop pretending to be a post-reload pass. */ | |
9411 | reload_completed = 0; | |
43e9d192 IB |
9412 | } |
9413 | ||
43e9d192 IB |
9414 | static bool |
9415 | aarch64_tls_referenced_p (rtx x) | |
9416 | { | |
9417 | if (!TARGET_HAVE_TLS) | |
9418 | return false; | |
e7de8563 RS |
9419 | subrtx_iterator::array_type array; |
9420 | FOR_EACH_SUBRTX (iter, array, x, ALL) | |
9421 | { | |
9422 | const_rtx x = *iter; | |
3793ecc1 | 9423 | if (SYMBOL_REF_P (x) && SYMBOL_REF_TLS_MODEL (x) != 0) |
e7de8563 RS |
9424 | return true; |
9425 | /* Don't recurse into UNSPEC_TLS looking for TLS symbols; these are | |
9426 | TLS offsets, not real symbol references. */ | |
9427 | if (GET_CODE (x) == UNSPEC && XINT (x, 1) == UNSPEC_TLS) | |
9428 | iter.skip_subrtxes (); | |
9429 | } | |
9430 | return false; | |
43e9d192 IB |
9431 | } |
9432 | ||
9433 | ||
43e9d192 IB |
9434 | /* Return true if val can be encoded as a 12-bit unsigned immediate with |
9435 | a left shift of 0 or 12 bits. */ | |
9436 | bool | |
9437 | aarch64_uimm12_shift (HOST_WIDE_INT val) | |
9438 | { | |
9439 | return ((val & (((HOST_WIDE_INT) 0xfff) << 0)) == val | |
9440 | || (val & (((HOST_WIDE_INT) 0xfff) << 12)) == val | |
9441 | ); | |
9442 | } | |
9443 | ||
eb471ba3 TC |
9444 | /* Returns the nearest value to VAL that will fit as a 12-bit unsigned immediate |
9445 | that can be created with a left shift of 0 or 12. */ | |
9446 | static HOST_WIDE_INT | |
9447 | aarch64_clamp_to_uimm12_shift (HOST_WIDE_INT val) | |
9448 | { | |
9449 | /* Check to see if the value fits in 24 bits, as that is the maximum we can | |
9450 | handle correctly. */ | |
9451 | gcc_assert ((val & 0xffffff) == val); | |
9452 | ||
9453 | if (((val & 0xfff) << 0) == val) | |
9454 | return val; | |
9455 | ||
9456 | return val & (0xfff << 12); | |
9457 | } | |
43e9d192 IB |
9458 | |
9459 | /* Return true if val is an immediate that can be loaded into a | |
9460 | register by a MOVZ instruction. */ | |
9461 | static bool | |
77e994c9 | 9462 | aarch64_movw_imm (HOST_WIDE_INT val, scalar_int_mode mode) |
43e9d192 IB |
9463 | { |
9464 | if (GET_MODE_SIZE (mode) > 4) | |
9465 | { | |
9466 | if ((val & (((HOST_WIDE_INT) 0xffff) << 32)) == val | |
9467 | || (val & (((HOST_WIDE_INT) 0xffff) << 48)) == val) | |
9468 | return 1; | |
9469 | } | |
9470 | else | |
9471 | { | |
43cacb12 RS |
9472 | /* Ignore sign extension. */ |
9473 | val &= (HOST_WIDE_INT) 0xffffffff; | |
9474 | } | |
9475 | return ((val & (((HOST_WIDE_INT) 0xffff) << 0)) == val | |
9476 | || (val & (((HOST_WIDE_INT) 0xffff) << 16)) == val); | |
9477 | } | |
9478 | ||
bba0c624 RS |
9479 | /* Test whether: |
9480 | ||
9481 | X = (X & AND_VAL) | IOR_VAL; | |
9482 | ||
9483 | can be implemented using: | |
9484 | ||
9485 | MOVK X, #(IOR_VAL >> shift), LSL #shift | |
9486 | ||
9487 | Return the shift if so, otherwise return -1. */ | |
9488 | int | |
9489 | aarch64_movk_shift (const wide_int_ref &and_val, | |
9490 | const wide_int_ref &ior_val) | |
9491 | { | |
9492 | unsigned int precision = and_val.get_precision (); | |
9493 | unsigned HOST_WIDE_INT mask = 0xffff; | |
9494 | for (unsigned int shift = 0; shift < precision; shift += 16) | |
9495 | { | |
9496 | if (and_val == ~mask && (ior_val & mask) == ior_val) | |
9497 | return shift; | |
9498 | mask <<= 16; | |
9499 | } | |
9500 | return -1; | |
9501 | } | |
9502 | ||
43cacb12 RS |
9503 | /* VAL is a value with the inner mode of MODE. Replicate it to fill a |
9504 | 64-bit (DImode) integer. */ | |
9505 | ||
9506 | static unsigned HOST_WIDE_INT | |
9507 | aarch64_replicate_bitmask_imm (unsigned HOST_WIDE_INT val, machine_mode mode) | |
9508 | { | |
9509 | unsigned int size = GET_MODE_UNIT_PRECISION (mode); | |
9510 | while (size < 64) | |
9511 | { | |
9512 | val &= (HOST_WIDE_INT_1U << size) - 1; | |
9513 | val |= val << size; | |
9514 | size *= 2; | |
43e9d192 | 9515 | } |
43cacb12 | 9516 | return val; |
43e9d192 IB |
9517 | } |
9518 | ||
a64c73a2 WD |
9519 | /* Multipliers for repeating bitmasks of width 32, 16, 8, 4, and 2. */ |
9520 | ||
9521 | static const unsigned HOST_WIDE_INT bitmask_imm_mul[] = | |
9522 | { | |
9523 | 0x0000000100000001ull, | |
9524 | 0x0001000100010001ull, | |
9525 | 0x0101010101010101ull, | |
9526 | 0x1111111111111111ull, | |
9527 | 0x5555555555555555ull, | |
9528 | }; | |
9529 | ||
43e9d192 IB |
9530 | |
9531 | /* Return true if val is a valid bitmask immediate. */ | |
a64c73a2 | 9532 | |
43e9d192 | 9533 | bool |
a64c73a2 | 9534 | aarch64_bitmask_imm (HOST_WIDE_INT val_in, machine_mode mode) |
43e9d192 | 9535 | { |
a64c73a2 WD |
9536 | unsigned HOST_WIDE_INT val, tmp, mask, first_one, next_one; |
9537 | int bits; | |
9538 | ||
9539 | /* Check for a single sequence of one bits and return quickly if so. | |
9540 | The special cases of all ones and all zeroes returns false. */ | |
43cacb12 | 9541 | val = aarch64_replicate_bitmask_imm (val_in, mode); |
a64c73a2 WD |
9542 | tmp = val + (val & -val); |
9543 | ||
9544 | if (tmp == (tmp & -tmp)) | |
9545 | return (val + 1) > 1; | |
9546 | ||
9547 | /* Replicate 32-bit immediates so we can treat them as 64-bit. */ | |
9548 | if (mode == SImode) | |
9549 | val = (val << 32) | (val & 0xffffffff); | |
9550 | ||
9551 | /* Invert if the immediate doesn't start with a zero bit - this means we | |
9552 | only need to search for sequences of one bits. */ | |
9553 | if (val & 1) | |
9554 | val = ~val; | |
9555 | ||
9556 | /* Find the first set bit and set tmp to val with the first sequence of one | |
9557 | bits removed. Return success if there is a single sequence of ones. */ | |
9558 | first_one = val & -val; | |
9559 | tmp = val & (val + first_one); | |
9560 | ||
9561 | if (tmp == 0) | |
9562 | return true; | |
9563 | ||
9564 | /* Find the next set bit and compute the difference in bit position. */ | |
9565 | next_one = tmp & -tmp; | |
9566 | bits = clz_hwi (first_one) - clz_hwi (next_one); | |
9567 | mask = val ^ tmp; | |
9568 | ||
9569 | /* Check the bit position difference is a power of 2, and that the first | |
9570 | sequence of one bits fits within 'bits' bits. */ | |
9571 | if ((mask >> bits) != 0 || bits != (bits & -bits)) | |
9572 | return false; | |
9573 | ||
9574 | /* Check the sequence of one bits is repeated 64/bits times. */ | |
9575 | return val == mask * bitmask_imm_mul[__builtin_clz (bits) - 26]; | |
43e9d192 IB |
9576 | } |
9577 | ||
43fd192f MC |
9578 | /* Create mask of ones, covering the lowest to highest bits set in VAL_IN. |
9579 | Assumed precondition: VAL_IN Is not zero. */ | |
9580 | ||
9581 | unsigned HOST_WIDE_INT | |
9582 | aarch64_and_split_imm1 (HOST_WIDE_INT val_in) | |
9583 | { | |
9584 | int lowest_bit_set = ctz_hwi (val_in); | |
9585 | int highest_bit_set = floor_log2 (val_in); | |
9586 | gcc_assert (val_in != 0); | |
9587 | ||
9588 | return ((HOST_WIDE_INT_UC (2) << highest_bit_set) - | |
9589 | (HOST_WIDE_INT_1U << lowest_bit_set)); | |
9590 | } | |
9591 | ||
9592 | /* Create constant where bits outside of lowest bit set to highest bit set | |
9593 | are set to 1. */ | |
9594 | ||
9595 | unsigned HOST_WIDE_INT | |
9596 | aarch64_and_split_imm2 (HOST_WIDE_INT val_in) | |
9597 | { | |
9598 | return val_in | ~aarch64_and_split_imm1 (val_in); | |
9599 | } | |
9600 | ||
9601 | /* Return true if VAL_IN is a valid 'and' bitmask immediate. */ | |
9602 | ||
9603 | bool | |
9604 | aarch64_and_bitmask_imm (unsigned HOST_WIDE_INT val_in, machine_mode mode) | |
9605 | { | |
77e994c9 RS |
9606 | scalar_int_mode int_mode; |
9607 | if (!is_a <scalar_int_mode> (mode, &int_mode)) | |
9608 | return false; | |
9609 | ||
9610 | if (aarch64_bitmask_imm (val_in, int_mode)) | |
43fd192f MC |
9611 | return false; |
9612 | ||
77e994c9 | 9613 | if (aarch64_move_imm (val_in, int_mode)) |
43fd192f MC |
9614 | return false; |
9615 | ||
9616 | unsigned HOST_WIDE_INT imm2 = aarch64_and_split_imm2 (val_in); | |
9617 | ||
77e994c9 | 9618 | return aarch64_bitmask_imm (imm2, int_mode); |
43fd192f | 9619 | } |
43e9d192 IB |
9620 | |
9621 | /* Return true if val is an immediate that can be loaded into a | |
9622 | register in a single instruction. */ | |
9623 | bool | |
ef4bddc2 | 9624 | aarch64_move_imm (HOST_WIDE_INT val, machine_mode mode) |
43e9d192 | 9625 | { |
77e994c9 RS |
9626 | scalar_int_mode int_mode; |
9627 | if (!is_a <scalar_int_mode> (mode, &int_mode)) | |
9628 | return false; | |
9629 | ||
9630 | if (aarch64_movw_imm (val, int_mode) || aarch64_movw_imm (~val, int_mode)) | |
43e9d192 | 9631 | return 1; |
77e994c9 | 9632 | return aarch64_bitmask_imm (val, int_mode); |
43e9d192 IB |
9633 | } |
9634 | ||
9635 | static bool | |
ef4bddc2 | 9636 | aarch64_cannot_force_const_mem (machine_mode mode ATTRIBUTE_UNUSED, rtx x) |
43e9d192 | 9637 | { |
43e9d192 IB |
9638 | if (GET_CODE (x) == HIGH) |
9639 | return true; | |
9640 | ||
43cacb12 RS |
9641 | /* There's no way to calculate VL-based values using relocations. */ |
9642 | subrtx_iterator::array_type array; | |
9643 | FOR_EACH_SUBRTX (iter, array, x, ALL) | |
9644 | if (GET_CODE (*iter) == CONST_POLY_INT) | |
9645 | return true; | |
9646 | ||
74b27d8e RS |
9647 | poly_int64 offset; |
9648 | rtx base = strip_offset_and_salt (x, &offset); | |
3793ecc1 | 9649 | if (SYMBOL_REF_P (base) || LABEL_REF_P (base)) |
28514dda | 9650 | { |
74b27d8e RS |
9651 | /* We checked for POLY_INT_CST offsets above. */ |
9652 | if (aarch64_classify_symbol (base, offset.to_constant ()) | |
28514dda YZ |
9653 | != SYMBOL_FORCE_TO_MEM) |
9654 | return true; | |
9655 | else | |
9656 | /* Avoid generating a 64-bit relocation in ILP32; leave | |
9657 | to aarch64_expand_mov_immediate to handle it properly. */ | |
9658 | return mode != ptr_mode; | |
9659 | } | |
43e9d192 IB |
9660 | |
9661 | return aarch64_tls_referenced_p (x); | |
9662 | } | |
9663 | ||
e79136e4 WD |
9664 | /* Implement TARGET_CASE_VALUES_THRESHOLD. |
9665 | The expansion for a table switch is quite expensive due to the number | |
9666 | of instructions, the table lookup and hard to predict indirect jump. | |
9667 | When optimizing for speed, and -O3 enabled, use the per-core tuning if | |
9c751b88 WD |
9668 | set, otherwise use tables for >= 11 cases as a tradeoff between size and |
9669 | performance. When optimizing for size, use 8 for smallest codesize. */ | |
50487d79 EM |
9670 | |
9671 | static unsigned int | |
9672 | aarch64_case_values_threshold (void) | |
9673 | { | |
9674 | /* Use the specified limit for the number of cases before using jump | |
9675 | tables at higher optimization levels. */ | |
9676 | if (optimize > 2 | |
9677 | && selected_cpu->tune->max_case_values != 0) | |
9678 | return selected_cpu->tune->max_case_values; | |
9679 | else | |
9c751b88 | 9680 | return optimize_size ? 8 : 11; |
50487d79 EM |
9681 | } |
9682 | ||
43e9d192 IB |
9683 | /* Return true if register REGNO is a valid index register. |
9684 | STRICT_P is true if REG_OK_STRICT is in effect. */ | |
9685 | ||
9686 | bool | |
9687 | aarch64_regno_ok_for_index_p (int regno, bool strict_p) | |
9688 | { | |
9689 | if (!HARD_REGISTER_NUM_P (regno)) | |
9690 | { | |
9691 | if (!strict_p) | |
9692 | return true; | |
9693 | ||
9694 | if (!reg_renumber) | |
9695 | return false; | |
9696 | ||
9697 | regno = reg_renumber[regno]; | |
9698 | } | |
9699 | return GP_REGNUM_P (regno); | |
9700 | } | |
9701 | ||
9702 | /* Return true if register REGNO is a valid base register for mode MODE. | |
9703 | STRICT_P is true if REG_OK_STRICT is in effect. */ | |
9704 | ||
9705 | bool | |
9706 | aarch64_regno_ok_for_base_p (int regno, bool strict_p) | |
9707 | { | |
9708 | if (!HARD_REGISTER_NUM_P (regno)) | |
9709 | { | |
9710 | if (!strict_p) | |
9711 | return true; | |
9712 | ||
9713 | if (!reg_renumber) | |
9714 | return false; | |
9715 | ||
9716 | regno = reg_renumber[regno]; | |
9717 | } | |
9718 | ||
9719 | /* The fake registers will be eliminated to either the stack or | |
9720 | hard frame pointer, both of which are usually valid base registers. | |
9721 | Reload deals with the cases where the eliminated form isn't valid. */ | |
9722 | return (GP_REGNUM_P (regno) | |
9723 | || regno == SP_REGNUM | |
9724 | || regno == FRAME_POINTER_REGNUM | |
9725 | || regno == ARG_POINTER_REGNUM); | |
9726 | } | |
9727 | ||
9728 | /* Return true if X is a valid base register for mode MODE. | |
9729 | STRICT_P is true if REG_OK_STRICT is in effect. */ | |
9730 | ||
9731 | static bool | |
9732 | aarch64_base_register_rtx_p (rtx x, bool strict_p) | |
9733 | { | |
76160199 | 9734 | if (!strict_p |
3793ecc1 | 9735 | && SUBREG_P (x) |
76160199 | 9736 | && contains_reg_of_mode[GENERAL_REGS][GET_MODE (SUBREG_REG (x))]) |
43e9d192 IB |
9737 | x = SUBREG_REG (x); |
9738 | ||
9739 | return (REG_P (x) && aarch64_regno_ok_for_base_p (REGNO (x), strict_p)); | |
9740 | } | |
9741 | ||
9742 | /* Return true if address offset is a valid index. If it is, fill in INFO | |
9743 | appropriately. STRICT_P is true if REG_OK_STRICT is in effect. */ | |
9744 | ||
9745 | static bool | |
9746 | aarch64_classify_index (struct aarch64_address_info *info, rtx x, | |
ef4bddc2 | 9747 | machine_mode mode, bool strict_p) |
43e9d192 IB |
9748 | { |
9749 | enum aarch64_address_type type; | |
9750 | rtx index; | |
9751 | int shift; | |
9752 | ||
9753 | /* (reg:P) */ | |
3793ecc1 | 9754 | if ((REG_P (x) || SUBREG_P (x)) |
43e9d192 IB |
9755 | && GET_MODE (x) == Pmode) |
9756 | { | |
9757 | type = ADDRESS_REG_REG; | |
9758 | index = x; | |
9759 | shift = 0; | |
9760 | } | |
9761 | /* (sign_extend:DI (reg:SI)) */ | |
9762 | else if ((GET_CODE (x) == SIGN_EXTEND | |
9763 | || GET_CODE (x) == ZERO_EXTEND) | |
9764 | && GET_MODE (x) == DImode | |
9765 | && GET_MODE (XEXP (x, 0)) == SImode) | |
9766 | { | |
9767 | type = (GET_CODE (x) == SIGN_EXTEND) | |
9768 | ? ADDRESS_REG_SXTW : ADDRESS_REG_UXTW; | |
9769 | index = XEXP (x, 0); | |
9770 | shift = 0; | |
9771 | } | |
9772 | /* (mult:DI (sign_extend:DI (reg:SI)) (const_int scale)) */ | |
9773 | else if (GET_CODE (x) == MULT | |
9774 | && (GET_CODE (XEXP (x, 0)) == SIGN_EXTEND | |
9775 | || GET_CODE (XEXP (x, 0)) == ZERO_EXTEND) | |
9776 | && GET_MODE (XEXP (x, 0)) == DImode | |
9777 | && GET_MODE (XEXP (XEXP (x, 0), 0)) == SImode | |
9778 | && CONST_INT_P (XEXP (x, 1))) | |
9779 | { | |
9780 | type = (GET_CODE (XEXP (x, 0)) == SIGN_EXTEND) | |
9781 | ? ADDRESS_REG_SXTW : ADDRESS_REG_UXTW; | |
9782 | index = XEXP (XEXP (x, 0), 0); | |
9783 | shift = exact_log2 (INTVAL (XEXP (x, 1))); | |
9784 | } | |
9785 | /* (ashift:DI (sign_extend:DI (reg:SI)) (const_int shift)) */ | |
9786 | else if (GET_CODE (x) == ASHIFT | |
9787 | && (GET_CODE (XEXP (x, 0)) == SIGN_EXTEND | |
9788 | || GET_CODE (XEXP (x, 0)) == ZERO_EXTEND) | |
9789 | && GET_MODE (XEXP (x, 0)) == DImode | |
9790 | && GET_MODE (XEXP (XEXP (x, 0), 0)) == SImode | |
9791 | && CONST_INT_P (XEXP (x, 1))) | |
9792 | { | |
9793 | type = (GET_CODE (XEXP (x, 0)) == SIGN_EXTEND) | |
9794 | ? ADDRESS_REG_SXTW : ADDRESS_REG_UXTW; | |
9795 | index = XEXP (XEXP (x, 0), 0); | |
9796 | shift = INTVAL (XEXP (x, 1)); | |
9797 | } | |
43e9d192 IB |
9798 | /* (and:DI (mult:DI (reg:DI) (const_int scale)) |
9799 | (const_int 0xffffffff<<shift)) */ | |
9800 | else if (GET_CODE (x) == AND | |
9801 | && GET_MODE (x) == DImode | |
9802 | && GET_CODE (XEXP (x, 0)) == MULT | |
9803 | && GET_MODE (XEXP (XEXP (x, 0), 0)) == DImode | |
9804 | && CONST_INT_P (XEXP (XEXP (x, 0), 1)) | |
9805 | && CONST_INT_P (XEXP (x, 1))) | |
9806 | { | |
9807 | type = ADDRESS_REG_UXTW; | |
9808 | index = XEXP (XEXP (x, 0), 0); | |
9809 | shift = exact_log2 (INTVAL (XEXP (XEXP (x, 0), 1))); | |
9810 | if (INTVAL (XEXP (x, 1)) != (HOST_WIDE_INT)0xffffffff << shift) | |
9811 | shift = -1; | |
9812 | } | |
43e9d192 IB |
9813 | /* (and:DI (ashift:DI (reg:DI) (const_int shift)) |
9814 | (const_int 0xffffffff<<shift)) */ | |
9815 | else if (GET_CODE (x) == AND | |
9816 | && GET_MODE (x) == DImode | |
9817 | && GET_CODE (XEXP (x, 0)) == ASHIFT | |
9818 | && GET_MODE (XEXP (XEXP (x, 0), 0)) == DImode | |
9819 | && CONST_INT_P (XEXP (XEXP (x, 0), 1)) | |
9820 | && CONST_INT_P (XEXP (x, 1))) | |
9821 | { | |
9822 | type = ADDRESS_REG_UXTW; | |
9823 | index = XEXP (XEXP (x, 0), 0); | |
9824 | shift = INTVAL (XEXP (XEXP (x, 0), 1)); | |
9825 | if (INTVAL (XEXP (x, 1)) != (HOST_WIDE_INT)0xffffffff << shift) | |
9826 | shift = -1; | |
9827 | } | |
9828 | /* (mult:P (reg:P) (const_int scale)) */ | |
9829 | else if (GET_CODE (x) == MULT | |
9830 | && GET_MODE (x) == Pmode | |
9831 | && GET_MODE (XEXP (x, 0)) == Pmode | |
9832 | && CONST_INT_P (XEXP (x, 1))) | |
9833 | { | |
9834 | type = ADDRESS_REG_REG; | |
9835 | index = XEXP (x, 0); | |
9836 | shift = exact_log2 (INTVAL (XEXP (x, 1))); | |
9837 | } | |
9838 | /* (ashift:P (reg:P) (const_int shift)) */ | |
9839 | else if (GET_CODE (x) == ASHIFT | |
9840 | && GET_MODE (x) == Pmode | |
9841 | && GET_MODE (XEXP (x, 0)) == Pmode | |
9842 | && CONST_INT_P (XEXP (x, 1))) | |
9843 | { | |
9844 | type = ADDRESS_REG_REG; | |
9845 | index = XEXP (x, 0); | |
9846 | shift = INTVAL (XEXP (x, 1)); | |
9847 | } | |
9848 | else | |
9849 | return false; | |
9850 | ||
76160199 | 9851 | if (!strict_p |
3793ecc1 | 9852 | && SUBREG_P (index) |
76160199 | 9853 | && contains_reg_of_mode[GENERAL_REGS][GET_MODE (SUBREG_REG (index))]) |
43e9d192 IB |
9854 | index = SUBREG_REG (index); |
9855 | ||
43cacb12 RS |
9856 | if (aarch64_sve_data_mode_p (mode)) |
9857 | { | |
9858 | if (type != ADDRESS_REG_REG | |
9859 | || (1 << shift) != GET_MODE_UNIT_SIZE (mode)) | |
9860 | return false; | |
9861 | } | |
9862 | else | |
9863 | { | |
9864 | if (shift != 0 | |
9865 | && !(IN_RANGE (shift, 1, 3) | |
9866 | && known_eq (1 << shift, GET_MODE_SIZE (mode)))) | |
9867 | return false; | |
9868 | } | |
9869 | ||
9870 | if (REG_P (index) | |
43e9d192 IB |
9871 | && aarch64_regno_ok_for_index_p (REGNO (index), strict_p)) |
9872 | { | |
9873 | info->type = type; | |
9874 | info->offset = index; | |
9875 | info->shift = shift; | |
9876 | return true; | |
9877 | } | |
9878 | ||
9879 | return false; | |
9880 | } | |
9881 | ||
abc52318 KT |
9882 | /* Return true if MODE is one of the modes for which we |
9883 | support LDP/STP operations. */ | |
9884 | ||
9885 | static bool | |
9886 | aarch64_mode_valid_for_sched_fusion_p (machine_mode mode) | |
9887 | { | |
9888 | return mode == SImode || mode == DImode | |
9889 | || mode == SFmode || mode == DFmode | |
9890 | || (aarch64_vector_mode_supported_p (mode) | |
9f5361c8 KT |
9891 | && (known_eq (GET_MODE_SIZE (mode), 8) |
9892 | || (known_eq (GET_MODE_SIZE (mode), 16) | |
9893 | && (aarch64_tune_params.extra_tuning_flags | |
9894 | & AARCH64_EXTRA_TUNE_NO_LDP_STP_QREGS) == 0))); | |
abc52318 KT |
9895 | } |
9896 | ||
9e0218fc RH |
9897 | /* Return true if REGNO is a virtual pointer register, or an eliminable |
9898 | "soft" frame register. Like REGNO_PTR_FRAME_P except that we don't | |
9899 | include stack_pointer or hard_frame_pointer. */ | |
9900 | static bool | |
9901 | virt_or_elim_regno_p (unsigned regno) | |
9902 | { | |
9903 | return ((regno >= FIRST_VIRTUAL_REGISTER | |
9904 | && regno <= LAST_VIRTUAL_POINTER_REGISTER) | |
9905 | || regno == FRAME_POINTER_REGNUM | |
9906 | || regno == ARG_POINTER_REGNUM); | |
9907 | } | |
9908 | ||
a97d8b98 RS |
9909 | /* Return true if X is a valid address of type TYPE for machine mode MODE. |
9910 | If it is, fill in INFO appropriately. STRICT_P is true if | |
9911 | REG_OK_STRICT is in effect. */ | |
43e9d192 | 9912 | |
a98824ac | 9913 | bool |
43e9d192 | 9914 | aarch64_classify_address (struct aarch64_address_info *info, |
a97d8b98 | 9915 | rtx x, machine_mode mode, bool strict_p, |
a98824ac | 9916 | aarch64_addr_query_type type) |
43e9d192 IB |
9917 | { |
9918 | enum rtx_code code = GET_CODE (x); | |
9919 | rtx op0, op1; | |
dc640181 RS |
9920 | poly_int64 offset; |
9921 | ||
6a70badb | 9922 | HOST_WIDE_INT const_size; |
2d8c6dc1 | 9923 | |
550a3380 RS |
9924 | /* Whether a vector mode is partial doesn't affect address legitimacy. |
9925 | Partial vectors like VNx8QImode allow the same indexed addressing | |
9926 | mode and MUL VL addressing mode as full vectors like VNx16QImode; | |
9927 | in both cases, MUL VL counts multiples of GET_MODE_SIZE. */ | |
9928 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
9929 | vec_flags &= ~VEC_PARTIAL; | |
9930 | ||
80d43579 WD |
9931 | /* On BE, we use load/store pair for all large int mode load/stores. |
9932 | TI/TFmode may also use a load/store pair. */ | |
43cacb12 | 9933 | bool advsimd_struct_p = (vec_flags == (VEC_ADVSIMD | VEC_STRUCT)); |
a97d8b98 | 9934 | bool load_store_pair_p = (type == ADDR_QUERY_LDP_STP |
a25831ac | 9935 | || type == ADDR_QUERY_LDP_STP_N |
80d43579 WD |
9936 | || mode == TImode |
9937 | || mode == TFmode | |
43cacb12 | 9938 | || (BYTES_BIG_ENDIAN && advsimd_struct_p)); |
a25831ac AV |
9939 | /* If we are dealing with ADDR_QUERY_LDP_STP_N that means the incoming mode |
9940 | corresponds to the actual size of the memory being loaded/stored and the | |
9941 | mode of the corresponding addressing mode is half of that. */ | |
9942 | if (type == ADDR_QUERY_LDP_STP_N | |
9943 | && known_eq (GET_MODE_SIZE (mode), 16)) | |
9944 | mode = DFmode; | |
9945 | ||
6a70badb | 9946 | bool allow_reg_index_p = (!load_store_pair_p |
512b3835 KT |
9947 | && ((vec_flags == 0 |
9948 | && known_lt (GET_MODE_SIZE (mode), 16)) | |
43cacb12 | 9949 | || vec_flags == VEC_ADVSIMD |
fa9863e7 | 9950 | || vec_flags & VEC_SVE_DATA)); |
43cacb12 | 9951 | |
512b3835 KT |
9952 | /* For SVE, only accept [Rn], [Rn, #offset, MUL VL] and [Rn, Rm, LSL #shift]. |
9953 | The latter is not valid for SVE predicates, and that's rejected through | |
9954 | allow_reg_index_p above. */ | |
43cacb12 RS |
9955 | if ((vec_flags & (VEC_SVE_DATA | VEC_SVE_PRED)) != 0 |
9956 | && (code != REG && code != PLUS)) | |
9957 | return false; | |
2d8c6dc1 AH |
9958 | |
9959 | /* On LE, for AdvSIMD, don't support anything other than POST_INC or | |
9960 | REG addressing. */ | |
43cacb12 RS |
9961 | if (advsimd_struct_p |
9962 | && !BYTES_BIG_ENDIAN | |
43e9d192 IB |
9963 | && (code != POST_INC && code != REG)) |
9964 | return false; | |
9965 | ||
43cacb12 RS |
9966 | gcc_checking_assert (GET_MODE (x) == VOIDmode |
9967 | || SCALAR_INT_MODE_P (GET_MODE (x))); | |
9968 | ||
43e9d192 IB |
9969 | switch (code) |
9970 | { | |
9971 | case REG: | |
9972 | case SUBREG: | |
9973 | info->type = ADDRESS_REG_IMM; | |
9974 | info->base = x; | |
9975 | info->offset = const0_rtx; | |
dc640181 | 9976 | info->const_offset = 0; |
43e9d192 IB |
9977 | return aarch64_base_register_rtx_p (x, strict_p); |
9978 | ||
9979 | case PLUS: | |
9980 | op0 = XEXP (x, 0); | |
9981 | op1 = XEXP (x, 1); | |
15c0c5c9 JW |
9982 | |
9983 | if (! strict_p | |
4aa81c2e | 9984 | && REG_P (op0) |
9e0218fc | 9985 | && virt_or_elim_regno_p (REGNO (op0)) |
dc640181 | 9986 | && poly_int_rtx_p (op1, &offset)) |
15c0c5c9 JW |
9987 | { |
9988 | info->type = ADDRESS_REG_IMM; | |
9989 | info->base = op0; | |
9990 | info->offset = op1; | |
dc640181 | 9991 | info->const_offset = offset; |
15c0c5c9 JW |
9992 | |
9993 | return true; | |
9994 | } | |
9995 | ||
6a70badb | 9996 | if (maybe_ne (GET_MODE_SIZE (mode), 0) |
dc640181 RS |
9997 | && aarch64_base_register_rtx_p (op0, strict_p) |
9998 | && poly_int_rtx_p (op1, &offset)) | |
43e9d192 | 9999 | { |
43e9d192 IB |
10000 | info->type = ADDRESS_REG_IMM; |
10001 | info->base = op0; | |
10002 | info->offset = op1; | |
dc640181 | 10003 | info->const_offset = offset; |
43e9d192 IB |
10004 | |
10005 | /* TImode and TFmode values are allowed in both pairs of X | |
10006 | registers and individual Q registers. The available | |
10007 | address modes are: | |
10008 | X,X: 7-bit signed scaled offset | |
10009 | Q: 9-bit signed offset | |
10010 | We conservatively require an offset representable in either mode. | |
8ed49fab KT |
10011 | When performing the check for pairs of X registers i.e. LDP/STP |
10012 | pass down DImode since that is the natural size of the LDP/STP | |
10013 | instruction memory accesses. */ | |
43e9d192 | 10014 | if (mode == TImode || mode == TFmode) |
8ed49fab | 10015 | return (aarch64_offset_7bit_signed_scaled_p (DImode, offset) |
3c5af608 | 10016 | && (aarch64_offset_9bit_signed_unscaled_p (mode, offset) |
8734dfac | 10017 | || offset_12bit_unsigned_scaled_p (mode, offset))); |
43e9d192 | 10018 | |
fdcddba8 PW |
10019 | if (mode == V8DImode) |
10020 | return (aarch64_offset_7bit_signed_scaled_p (DImode, offset) | |
10021 | && aarch64_offset_7bit_signed_scaled_p (DImode, offset + 48)); | |
10022 | ||
2d8c6dc1 AH |
10023 | /* A 7bit offset check because OImode will emit a ldp/stp |
10024 | instruction (only big endian will get here). | |
10025 | For ldp/stp instructions, the offset is scaled for the size of a | |
10026 | single element of the pair. */ | |
66f206b8 JW |
10027 | if (aarch64_advsimd_partial_struct_mode_p (mode) |
10028 | && known_eq (GET_MODE_SIZE (mode), 16)) | |
10029 | return aarch64_offset_7bit_signed_scaled_p (DImode, offset); | |
10030 | if (aarch64_advsimd_full_struct_mode_p (mode) | |
10031 | && known_eq (GET_MODE_SIZE (mode), 32)) | |
2d8c6dc1 AH |
10032 | return aarch64_offset_7bit_signed_scaled_p (TImode, offset); |
10033 | ||
10034 | /* Three 9/12 bit offsets checks because CImode will emit three | |
10035 | ldr/str instructions (only big endian will get here). */ | |
66f206b8 JW |
10036 | if (aarch64_advsimd_partial_struct_mode_p (mode) |
10037 | && known_eq (GET_MODE_SIZE (mode), 24)) | |
10038 | return (aarch64_offset_7bit_signed_scaled_p (DImode, offset) | |
10039 | && (aarch64_offset_9bit_signed_unscaled_p (DImode, | |
10040 | offset + 16) | |
10041 | || offset_12bit_unsigned_scaled_p (DImode, | |
10042 | offset + 16))); | |
10043 | if (aarch64_advsimd_full_struct_mode_p (mode) | |
10044 | && known_eq (GET_MODE_SIZE (mode), 48)) | |
2d8c6dc1 | 10045 | return (aarch64_offset_7bit_signed_scaled_p (TImode, offset) |
66f206b8 | 10046 | && (aarch64_offset_9bit_signed_unscaled_p (TImode, |
3c5af608 | 10047 | offset + 32) |
66f206b8 | 10048 | || offset_12bit_unsigned_scaled_p (TImode, |
2d8c6dc1 AH |
10049 | offset + 32))); |
10050 | ||
10051 | /* Two 7bit offsets checks because XImode will emit two ldp/stp | |
10052 | instructions (only big endian will get here). */ | |
66f206b8 JW |
10053 | if (aarch64_advsimd_partial_struct_mode_p (mode) |
10054 | && known_eq (GET_MODE_SIZE (mode), 32)) | |
10055 | return (aarch64_offset_7bit_signed_scaled_p (DImode, offset) | |
10056 | && aarch64_offset_7bit_signed_scaled_p (DImode, | |
10057 | offset + 16)); | |
10058 | if (aarch64_advsimd_full_struct_mode_p (mode) | |
10059 | && known_eq (GET_MODE_SIZE (mode), 64)) | |
2d8c6dc1 AH |
10060 | return (aarch64_offset_7bit_signed_scaled_p (TImode, offset) |
10061 | && aarch64_offset_7bit_signed_scaled_p (TImode, | |
10062 | offset + 32)); | |
10063 | ||
43cacb12 RS |
10064 | /* Make "m" use the LD1 offset range for SVE data modes, so |
10065 | that pre-RTL optimizers like ivopts will work to that | |
10066 | instead of the wider LDR/STR range. */ | |
10067 | if (vec_flags == VEC_SVE_DATA) | |
10068 | return (type == ADDR_QUERY_M | |
10069 | ? offset_4bit_signed_scaled_p (mode, offset) | |
10070 | : offset_9bit_signed_scaled_p (mode, offset)); | |
10071 | ||
9f4cbab8 RS |
10072 | if (vec_flags == (VEC_SVE_DATA | VEC_STRUCT)) |
10073 | { | |
10074 | poly_int64 end_offset = (offset | |
10075 | + GET_MODE_SIZE (mode) | |
10076 | - BYTES_PER_SVE_VECTOR); | |
10077 | return (type == ADDR_QUERY_M | |
10078 | ? offset_4bit_signed_scaled_p (mode, offset) | |
10079 | : (offset_9bit_signed_scaled_p (SVE_BYTE_MODE, offset) | |
10080 | && offset_9bit_signed_scaled_p (SVE_BYTE_MODE, | |
10081 | end_offset))); | |
10082 | } | |
10083 | ||
43cacb12 RS |
10084 | if (vec_flags == VEC_SVE_PRED) |
10085 | return offset_9bit_signed_scaled_p (mode, offset); | |
10086 | ||
2d8c6dc1 | 10087 | if (load_store_pair_p) |
6a70badb | 10088 | return ((known_eq (GET_MODE_SIZE (mode), 4) |
9f5361c8 KT |
10089 | || known_eq (GET_MODE_SIZE (mode), 8) |
10090 | || known_eq (GET_MODE_SIZE (mode), 16)) | |
44707478 | 10091 | && aarch64_offset_7bit_signed_scaled_p (mode, offset)); |
43e9d192 | 10092 | else |
3c5af608 | 10093 | return (aarch64_offset_9bit_signed_unscaled_p (mode, offset) |
43e9d192 IB |
10094 | || offset_12bit_unsigned_scaled_p (mode, offset)); |
10095 | } | |
10096 | ||
10097 | if (allow_reg_index_p) | |
10098 | { | |
10099 | /* Look for base + (scaled/extended) index register. */ | |
10100 | if (aarch64_base_register_rtx_p (op0, strict_p) | |
10101 | && aarch64_classify_index (info, op1, mode, strict_p)) | |
10102 | { | |
10103 | info->base = op0; | |
10104 | return true; | |
10105 | } | |
10106 | if (aarch64_base_register_rtx_p (op1, strict_p) | |
10107 | && aarch64_classify_index (info, op0, mode, strict_p)) | |
10108 | { | |
10109 | info->base = op1; | |
10110 | return true; | |
10111 | } | |
10112 | } | |
10113 | ||
10114 | return false; | |
10115 | ||
10116 | case POST_INC: | |
10117 | case POST_DEC: | |
10118 | case PRE_INC: | |
10119 | case PRE_DEC: | |
10120 | info->type = ADDRESS_REG_WB; | |
10121 | info->base = XEXP (x, 0); | |
10122 | info->offset = NULL_RTX; | |
10123 | return aarch64_base_register_rtx_p (info->base, strict_p); | |
10124 | ||
10125 | case POST_MODIFY: | |
10126 | case PRE_MODIFY: | |
10127 | info->type = ADDRESS_REG_WB; | |
10128 | info->base = XEXP (x, 0); | |
10129 | if (GET_CODE (XEXP (x, 1)) == PLUS | |
dc640181 | 10130 | && poly_int_rtx_p (XEXP (XEXP (x, 1), 1), &offset) |
43e9d192 IB |
10131 | && rtx_equal_p (XEXP (XEXP (x, 1), 0), info->base) |
10132 | && aarch64_base_register_rtx_p (info->base, strict_p)) | |
10133 | { | |
43e9d192 | 10134 | info->offset = XEXP (XEXP (x, 1), 1); |
dc640181 | 10135 | info->const_offset = offset; |
43e9d192 IB |
10136 | |
10137 | /* TImode and TFmode values are allowed in both pairs of X | |
10138 | registers and individual Q registers. The available | |
10139 | address modes are: | |
10140 | X,X: 7-bit signed scaled offset | |
10141 | Q: 9-bit signed offset | |
10142 | We conservatively require an offset representable in either mode. | |
10143 | */ | |
10144 | if (mode == TImode || mode == TFmode) | |
44707478 | 10145 | return (aarch64_offset_7bit_signed_scaled_p (mode, offset) |
3c5af608 | 10146 | && aarch64_offset_9bit_signed_unscaled_p (mode, offset)); |
43e9d192 | 10147 | |
2d8c6dc1 | 10148 | if (load_store_pair_p) |
6a70badb | 10149 | return ((known_eq (GET_MODE_SIZE (mode), 4) |
9f5361c8 KT |
10150 | || known_eq (GET_MODE_SIZE (mode), 8) |
10151 | || known_eq (GET_MODE_SIZE (mode), 16)) | |
44707478 | 10152 | && aarch64_offset_7bit_signed_scaled_p (mode, offset)); |
43e9d192 | 10153 | else |
3c5af608 | 10154 | return aarch64_offset_9bit_signed_unscaled_p (mode, offset); |
43e9d192 IB |
10155 | } |
10156 | return false; | |
10157 | ||
10158 | case CONST: | |
10159 | case SYMBOL_REF: | |
10160 | case LABEL_REF: | |
79517551 SN |
10161 | /* load literal: pc-relative constant pool entry. Only supported |
10162 | for SI mode or larger. */ | |
43e9d192 | 10163 | info->type = ADDRESS_SYMBOLIC; |
2d8c6dc1 | 10164 | |
6a70badb RS |
10165 | if (!load_store_pair_p |
10166 | && GET_MODE_SIZE (mode).is_constant (&const_size) | |
10167 | && const_size >= 4) | |
43e9d192 | 10168 | { |
74b27d8e RS |
10169 | poly_int64 offset; |
10170 | rtx sym = strip_offset_and_salt (x, &offset); | |
3793ecc1 AC |
10171 | return ((LABEL_REF_P (sym) |
10172 | || (SYMBOL_REF_P (sym) | |
b4f50fd4 | 10173 | && CONSTANT_POOL_ADDRESS_P (sym) |
9ee6540a | 10174 | && aarch64_pcrelative_literal_loads))); |
43e9d192 IB |
10175 | } |
10176 | return false; | |
10177 | ||
10178 | case LO_SUM: | |
10179 | info->type = ADDRESS_LO_SUM; | |
10180 | info->base = XEXP (x, 0); | |
10181 | info->offset = XEXP (x, 1); | |
10182 | if (allow_reg_index_p | |
10183 | && aarch64_base_register_rtx_p (info->base, strict_p)) | |
10184 | { | |
74b27d8e RS |
10185 | poly_int64 offset; |
10186 | HOST_WIDE_INT const_offset; | |
10187 | rtx sym = strip_offset_and_salt (info->offset, &offset); | |
3793ecc1 | 10188 | if (SYMBOL_REF_P (sym) |
74b27d8e RS |
10189 | && offset.is_constant (&const_offset) |
10190 | && (aarch64_classify_symbol (sym, const_offset) | |
43cacb12 | 10191 | == SYMBOL_SMALL_ABSOLUTE)) |
43e9d192 IB |
10192 | { |
10193 | /* The symbol and offset must be aligned to the access size. */ | |
10194 | unsigned int align; | |
43e9d192 IB |
10195 | |
10196 | if (CONSTANT_POOL_ADDRESS_P (sym)) | |
10197 | align = GET_MODE_ALIGNMENT (get_pool_mode (sym)); | |
10198 | else if (TREE_CONSTANT_POOL_ADDRESS_P (sym)) | |
10199 | { | |
10200 | tree exp = SYMBOL_REF_DECL (sym); | |
10201 | align = TYPE_ALIGN (TREE_TYPE (exp)); | |
58e17cf8 | 10202 | align = aarch64_constant_alignment (exp, align); |
43e9d192 IB |
10203 | } |
10204 | else if (SYMBOL_REF_DECL (sym)) | |
10205 | align = DECL_ALIGN (SYMBOL_REF_DECL (sym)); | |
6c031d8d KV |
10206 | else if (SYMBOL_REF_HAS_BLOCK_INFO_P (sym) |
10207 | && SYMBOL_REF_BLOCK (sym) != NULL) | |
10208 | align = SYMBOL_REF_BLOCK (sym)->alignment; | |
43e9d192 IB |
10209 | else |
10210 | align = BITS_PER_UNIT; | |
10211 | ||
6a70badb RS |
10212 | poly_int64 ref_size = GET_MODE_SIZE (mode); |
10213 | if (known_eq (ref_size, 0)) | |
43e9d192 IB |
10214 | ref_size = GET_MODE_SIZE (DImode); |
10215 | ||
74b27d8e | 10216 | return (multiple_p (const_offset, ref_size) |
6a70badb | 10217 | && multiple_p (align / BITS_PER_UNIT, ref_size)); |
43e9d192 IB |
10218 | } |
10219 | } | |
10220 | return false; | |
10221 | ||
10222 | default: | |
10223 | return false; | |
10224 | } | |
10225 | } | |
10226 | ||
9bf2f779 KT |
10227 | /* Return true if the address X is valid for a PRFM instruction. |
10228 | STRICT_P is true if we should do strict checking with | |
10229 | aarch64_classify_address. */ | |
10230 | ||
10231 | bool | |
10232 | aarch64_address_valid_for_prefetch_p (rtx x, bool strict_p) | |
10233 | { | |
10234 | struct aarch64_address_info addr; | |
10235 | ||
10236 | /* PRFM accepts the same addresses as DImode... */ | |
a97d8b98 | 10237 | bool res = aarch64_classify_address (&addr, x, DImode, strict_p); |
9bf2f779 KT |
10238 | if (!res) |
10239 | return false; | |
10240 | ||
10241 | /* ... except writeback forms. */ | |
10242 | return addr.type != ADDRESS_REG_WB; | |
10243 | } | |
10244 | ||
43e9d192 IB |
10245 | bool |
10246 | aarch64_symbolic_address_p (rtx x) | |
10247 | { | |
74b27d8e RS |
10248 | poly_int64 offset; |
10249 | x = strip_offset_and_salt (x, &offset); | |
3793ecc1 | 10250 | return SYMBOL_REF_P (x) || LABEL_REF_P (x); |
43e9d192 IB |
10251 | } |
10252 | ||
a6e0bfa7 | 10253 | /* Classify the base of symbolic expression X. */ |
da4f13a4 MS |
10254 | |
10255 | enum aarch64_symbol_type | |
a6e0bfa7 | 10256 | aarch64_classify_symbolic_expression (rtx x) |
43e9d192 IB |
10257 | { |
10258 | rtx offset; | |
da4f13a4 | 10259 | |
43e9d192 | 10260 | split_const (x, &x, &offset); |
43cacb12 | 10261 | return aarch64_classify_symbol (x, INTVAL (offset)); |
43e9d192 IB |
10262 | } |
10263 | ||
10264 | ||
10265 | /* Return TRUE if X is a legitimate address for accessing memory in | |
10266 | mode MODE. */ | |
10267 | static bool | |
ef4bddc2 | 10268 | aarch64_legitimate_address_hook_p (machine_mode mode, rtx x, bool strict_p) |
43e9d192 IB |
10269 | { |
10270 | struct aarch64_address_info addr; | |
10271 | ||
a97d8b98 | 10272 | return aarch64_classify_address (&addr, x, mode, strict_p); |
43e9d192 IB |
10273 | } |
10274 | ||
a97d8b98 RS |
10275 | /* Return TRUE if X is a legitimate address of type TYPE for accessing |
10276 | memory in mode MODE. STRICT_P is true if REG_OK_STRICT is in effect. */ | |
43e9d192 | 10277 | bool |
a97d8b98 RS |
10278 | aarch64_legitimate_address_p (machine_mode mode, rtx x, bool strict_p, |
10279 | aarch64_addr_query_type type) | |
43e9d192 IB |
10280 | { |
10281 | struct aarch64_address_info addr; | |
10282 | ||
a97d8b98 | 10283 | return aarch64_classify_address (&addr, x, mode, strict_p, type); |
43e9d192 IB |
10284 | } |
10285 | ||
9005477f RS |
10286 | /* Implement TARGET_LEGITIMIZE_ADDRESS_DISPLACEMENT. */ |
10287 | ||
491ec060 | 10288 | static bool |
9005477f RS |
10289 | aarch64_legitimize_address_displacement (rtx *offset1, rtx *offset2, |
10290 | poly_int64 orig_offset, | |
10291 | machine_mode mode) | |
491ec060 | 10292 | { |
6a70badb RS |
10293 | HOST_WIDE_INT size; |
10294 | if (GET_MODE_SIZE (mode).is_constant (&size)) | |
10295 | { | |
9005477f RS |
10296 | HOST_WIDE_INT const_offset, second_offset; |
10297 | ||
10298 | /* A general SVE offset is A * VQ + B. Remove the A component from | |
10299 | coefficient 0 in order to get the constant B. */ | |
10300 | const_offset = orig_offset.coeffs[0] - orig_offset.coeffs[1]; | |
10301 | ||
10302 | /* Split an out-of-range address displacement into a base and | |
10303 | offset. Use 4KB range for 1- and 2-byte accesses and a 16KB | |
10304 | range otherwise to increase opportunities for sharing the base | |
10305 | address of different sizes. Unaligned accesses use the signed | |
10306 | 9-bit range, TImode/TFmode use the intersection of signed | |
10307 | scaled 7-bit and signed 9-bit offset. */ | |
6a70badb | 10308 | if (mode == TImode || mode == TFmode) |
9005477f RS |
10309 | second_offset = ((const_offset + 0x100) & 0x1f8) - 0x100; |
10310 | else if ((const_offset & (size - 1)) != 0) | |
10311 | second_offset = ((const_offset + 0x100) & 0x1ff) - 0x100; | |
6a70badb | 10312 | else |
9005477f | 10313 | second_offset = const_offset & (size < 4 ? 0xfff : 0x3ffc); |
491ec060 | 10314 | |
9005477f RS |
10315 | if (second_offset == 0 || known_eq (orig_offset, second_offset)) |
10316 | return false; | |
10317 | ||
10318 | /* Split the offset into second_offset and the rest. */ | |
10319 | *offset1 = gen_int_mode (orig_offset - second_offset, Pmode); | |
10320 | *offset2 = gen_int_mode (second_offset, Pmode); | |
10321 | return true; | |
10322 | } | |
10323 | else | |
10324 | { | |
10325 | /* Get the mode we should use as the basis of the range. For structure | |
10326 | modes this is the mode of one vector. */ | |
10327 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
10328 | machine_mode step_mode | |
10329 | = (vec_flags & VEC_STRUCT) != 0 ? SVE_BYTE_MODE : mode; | |
10330 | ||
10331 | /* Get the "mul vl" multiplier we'd like to use. */ | |
10332 | HOST_WIDE_INT factor = GET_MODE_SIZE (step_mode).coeffs[1]; | |
10333 | HOST_WIDE_INT vnum = orig_offset.coeffs[1] / factor; | |
10334 | if (vec_flags & VEC_SVE_DATA) | |
10335 | /* LDR supports a 9-bit range, but the move patterns for | |
10336 | structure modes require all vectors to be in range of the | |
10337 | same base. The simplest way of accomodating that while still | |
10338 | promoting reuse of anchor points between different modes is | |
10339 | to use an 8-bit range unconditionally. */ | |
10340 | vnum = ((vnum + 128) & 255) - 128; | |
10341 | else | |
10342 | /* Predicates are only handled singly, so we might as well use | |
10343 | the full range. */ | |
10344 | vnum = ((vnum + 256) & 511) - 256; | |
10345 | if (vnum == 0) | |
10346 | return false; | |
10347 | ||
10348 | /* Convert the "mul vl" multiplier into a byte offset. */ | |
10349 | poly_int64 second_offset = GET_MODE_SIZE (step_mode) * vnum; | |
10350 | if (known_eq (second_offset, orig_offset)) | |
10351 | return false; | |
10352 | ||
10353 | /* Split the offset into second_offset and the rest. */ | |
10354 | *offset1 = gen_int_mode (orig_offset - second_offset, Pmode); | |
10355 | *offset2 = gen_int_mode (second_offset, Pmode); | |
6a70badb RS |
10356 | return true; |
10357 | } | |
491ec060 WD |
10358 | } |
10359 | ||
a2170965 TC |
10360 | /* Return the binary representation of floating point constant VALUE in INTVAL. |
10361 | If the value cannot be converted, return false without setting INTVAL. | |
10362 | The conversion is done in the given MODE. */ | |
10363 | bool | |
10364 | aarch64_reinterpret_float_as_int (rtx value, unsigned HOST_WIDE_INT *intval) | |
10365 | { | |
10366 | ||
10367 | /* We make a general exception for 0. */ | |
10368 | if (aarch64_float_const_zero_rtx_p (value)) | |
10369 | { | |
10370 | *intval = 0; | |
10371 | return true; | |
10372 | } | |
10373 | ||
0d0e0188 | 10374 | scalar_float_mode mode; |
3793ecc1 | 10375 | if (!CONST_DOUBLE_P (value) |
0d0e0188 | 10376 | || !is_a <scalar_float_mode> (GET_MODE (value), &mode) |
a2170965 TC |
10377 | || GET_MODE_BITSIZE (mode) > HOST_BITS_PER_WIDE_INT |
10378 | /* Only support up to DF mode. */ | |
10379 | || GET_MODE_BITSIZE (mode) > GET_MODE_BITSIZE (DFmode)) | |
10380 | return false; | |
10381 | ||
10382 | unsigned HOST_WIDE_INT ival = 0; | |
10383 | ||
10384 | long res[2]; | |
10385 | real_to_target (res, | |
10386 | CONST_DOUBLE_REAL_VALUE (value), | |
10387 | REAL_MODE_FORMAT (mode)); | |
10388 | ||
5c22bb48 TC |
10389 | if (mode == DFmode) |
10390 | { | |
10391 | int order = BYTES_BIG_ENDIAN ? 1 : 0; | |
10392 | ival = zext_hwi (res[order], 32); | |
10393 | ival |= (zext_hwi (res[1 - order], 32) << 32); | |
10394 | } | |
10395 | else | |
10396 | ival = zext_hwi (res[0], 32); | |
a2170965 TC |
10397 | |
10398 | *intval = ival; | |
10399 | return true; | |
10400 | } | |
10401 | ||
10402 | /* Return TRUE if rtx X is an immediate constant that can be moved using a | |
10403 | single MOV(+MOVK) followed by an FMOV. */ | |
10404 | bool | |
10405 | aarch64_float_const_rtx_p (rtx x) | |
10406 | { | |
10407 | machine_mode mode = GET_MODE (x); | |
10408 | if (mode == VOIDmode) | |
10409 | return false; | |
10410 | ||
10411 | /* Determine whether it's cheaper to write float constants as | |
10412 | mov/movk pairs over ldr/adrp pairs. */ | |
10413 | unsigned HOST_WIDE_INT ival; | |
10414 | ||
3793ecc1 | 10415 | if (CONST_DOUBLE_P (x) |
a2170965 TC |
10416 | && SCALAR_FLOAT_MODE_P (mode) |
10417 | && aarch64_reinterpret_float_as_int (x, &ival)) | |
10418 | { | |
77e994c9 RS |
10419 | scalar_int_mode imode = (mode == HFmode |
10420 | ? SImode | |
10421 | : int_mode_for_mode (mode).require ()); | |
a2170965 TC |
10422 | int num_instr = aarch64_internal_mov_immediate |
10423 | (NULL_RTX, gen_int_mode (ival, imode), false, imode); | |
10424 | return num_instr < 3; | |
10425 | } | |
10426 | ||
10427 | return false; | |
10428 | } | |
10429 | ||
43e9d192 IB |
10430 | /* Return TRUE if rtx X is immediate constant 0.0 */ |
10431 | bool | |
3520f7cc | 10432 | aarch64_float_const_zero_rtx_p (rtx x) |
43e9d192 | 10433 | { |
43e9d192 IB |
10434 | if (GET_MODE (x) == VOIDmode) |
10435 | return false; | |
10436 | ||
34a72c33 | 10437 | if (REAL_VALUE_MINUS_ZERO (*CONST_DOUBLE_REAL_VALUE (x))) |
43e9d192 | 10438 | return !HONOR_SIGNED_ZEROS (GET_MODE (x)); |
34a72c33 | 10439 | return real_equal (CONST_DOUBLE_REAL_VALUE (x), &dconst0); |
43e9d192 IB |
10440 | } |
10441 | ||
a2170965 TC |
10442 | /* Return TRUE if rtx X is immediate constant that fits in a single |
10443 | MOVI immediate operation. */ | |
10444 | bool | |
10445 | aarch64_can_const_movi_rtx_p (rtx x, machine_mode mode) | |
10446 | { | |
10447 | if (!TARGET_SIMD) | |
10448 | return false; | |
10449 | ||
77e994c9 RS |
10450 | machine_mode vmode; |
10451 | scalar_int_mode imode; | |
a2170965 TC |
10452 | unsigned HOST_WIDE_INT ival; |
10453 | ||
3793ecc1 | 10454 | if (CONST_DOUBLE_P (x) |
a2170965 TC |
10455 | && SCALAR_FLOAT_MODE_P (mode)) |
10456 | { | |
10457 | if (!aarch64_reinterpret_float_as_int (x, &ival)) | |
10458 | return false; | |
10459 | ||
35c38fa6 TC |
10460 | /* We make a general exception for 0. */ |
10461 | if (aarch64_float_const_zero_rtx_p (x)) | |
10462 | return true; | |
10463 | ||
304b9962 | 10464 | imode = int_mode_for_mode (mode).require (); |
a2170965 | 10465 | } |
3793ecc1 | 10466 | else if (CONST_INT_P (x) |
77e994c9 RS |
10467 | && is_a <scalar_int_mode> (mode, &imode)) |
10468 | ival = INTVAL (x); | |
a2170965 TC |
10469 | else |
10470 | return false; | |
10471 | ||
10472 | /* use a 64 bit mode for everything except for DI/DF mode, where we use | |
10473 | a 128 bit vector mode. */ | |
77e994c9 | 10474 | int width = GET_MODE_BITSIZE (imode) == 64 ? 128 : 64; |
a2170965 TC |
10475 | |
10476 | vmode = aarch64_simd_container_mode (imode, width); | |
10477 | rtx v_op = aarch64_simd_gen_const_vector_dup (vmode, ival); | |
10478 | ||
b187677b | 10479 | return aarch64_simd_valid_immediate (v_op, NULL); |
a2170965 TC |
10480 | } |
10481 | ||
10482 | ||
70f09188 AP |
10483 | /* Return the fixed registers used for condition codes. */ |
10484 | ||
10485 | static bool | |
10486 | aarch64_fixed_condition_code_regs (unsigned int *p1, unsigned int *p2) | |
10487 | { | |
10488 | *p1 = CC_REGNUM; | |
10489 | *p2 = INVALID_REGNUM; | |
10490 | return true; | |
10491 | } | |
10492 | ||
47210a04 RL |
10493 | /* This function is used by the call expanders of the machine description. |
10494 | RESULT is the register in which the result is returned. It's NULL for | |
10495 | "call" and "sibcall". | |
10496 | MEM is the location of the function call. | |
08cc4d92 | 10497 | CALLEE_ABI is a const_int that gives the arm_pcs of the callee. |
47210a04 RL |
10498 | SIBCALL indicates whether this function call is normal call or sibling call. |
10499 | It will generate different pattern accordingly. */ | |
10500 | ||
10501 | void | |
08cc4d92 | 10502 | aarch64_expand_call (rtx result, rtx mem, rtx callee_abi, bool sibcall) |
47210a04 RL |
10503 | { |
10504 | rtx call, callee, tmp; | |
10505 | rtvec vec; | |
10506 | machine_mode mode; | |
10507 | ||
10508 | gcc_assert (MEM_P (mem)); | |
10509 | callee = XEXP (mem, 0); | |
10510 | mode = GET_MODE (callee); | |
10511 | gcc_assert (mode == Pmode); | |
10512 | ||
10513 | /* Decide if we should generate indirect calls by loading the | |
10514 | address of the callee into a register before performing | |
10515 | the branch-and-link. */ | |
10516 | if (SYMBOL_REF_P (callee) | |
10517 | ? (aarch64_is_long_call_p (callee) | |
10518 | || aarch64_is_noplt_call_p (callee)) | |
10519 | : !REG_P (callee)) | |
10520 | XEXP (mem, 0) = force_reg (mode, callee); | |
10521 | ||
10522 | call = gen_rtx_CALL (VOIDmode, mem, const0_rtx); | |
10523 | ||
10524 | if (result != NULL_RTX) | |
10525 | call = gen_rtx_SET (result, call); | |
10526 | ||
10527 | if (sibcall) | |
10528 | tmp = ret_rtx; | |
10529 | else | |
10530 | tmp = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, LR_REGNUM)); | |
10531 | ||
08cc4d92 RS |
10532 | gcc_assert (CONST_INT_P (callee_abi)); |
10533 | callee_abi = gen_rtx_UNSPEC (DImode, gen_rtvec (1, callee_abi), | |
10534 | UNSPEC_CALLEE_ABI); | |
10535 | ||
10536 | vec = gen_rtvec (3, call, callee_abi, tmp); | |
47210a04 RL |
10537 | call = gen_rtx_PARALLEL (VOIDmode, vec); |
10538 | ||
10539 | aarch64_emit_call_insn (call); | |
10540 | } | |
10541 | ||
78607708 TV |
10542 | /* Emit call insn with PAT and do aarch64-specific handling. */ |
10543 | ||
d07a3fed | 10544 | void |
78607708 TV |
10545 | aarch64_emit_call_insn (rtx pat) |
10546 | { | |
10547 | rtx insn = emit_call_insn (pat); | |
10548 | ||
10549 | rtx *fusage = &CALL_INSN_FUNCTION_USAGE (insn); | |
10550 | clobber_reg (fusage, gen_rtx_REG (word_mode, IP0_REGNUM)); | |
10551 | clobber_reg (fusage, gen_rtx_REG (word_mode, IP1_REGNUM)); | |
10552 | } | |
10553 | ||
ef4bddc2 | 10554 | machine_mode |
43e9d192 IB |
10555 | aarch64_select_cc_mode (RTX_CODE code, rtx x, rtx y) |
10556 | { | |
f7343f20 RE |
10557 | machine_mode mode_x = GET_MODE (x); |
10558 | rtx_code code_x = GET_CODE (x); | |
10559 | ||
43e9d192 IB |
10560 | /* All floating point compares return CCFP if it is an equality |
10561 | comparison, and CCFPE otherwise. */ | |
f7343f20 | 10562 | if (GET_MODE_CLASS (mode_x) == MODE_FLOAT) |
43e9d192 IB |
10563 | { |
10564 | switch (code) | |
10565 | { | |
10566 | case EQ: | |
10567 | case NE: | |
10568 | case UNORDERED: | |
10569 | case ORDERED: | |
10570 | case UNLT: | |
10571 | case UNLE: | |
10572 | case UNGT: | |
10573 | case UNGE: | |
10574 | case UNEQ: | |
43e9d192 IB |
10575 | return CCFPmode; |
10576 | ||
10577 | case LT: | |
10578 | case LE: | |
10579 | case GT: | |
10580 | case GE: | |
8332c5ee | 10581 | case LTGT: |
43e9d192 IB |
10582 | return CCFPEmode; |
10583 | ||
10584 | default: | |
10585 | gcc_unreachable (); | |
10586 | } | |
10587 | } | |
10588 | ||
2b8568fe KT |
10589 | /* Equality comparisons of short modes against zero can be performed |
10590 | using the TST instruction with the appropriate bitmask. */ | |
f73dc006 | 10591 | if (y == const0_rtx && (REG_P (x) || SUBREG_P (x)) |
2b8568fe | 10592 | && (code == EQ || code == NE) |
f7343f20 | 10593 | && (mode_x == HImode || mode_x == QImode)) |
2b8568fe KT |
10594 | return CC_NZmode; |
10595 | ||
b06335f9 KT |
10596 | /* Similarly, comparisons of zero_extends from shorter modes can |
10597 | be performed using an ANDS with an immediate mask. */ | |
f7343f20 RE |
10598 | if (y == const0_rtx && code_x == ZERO_EXTEND |
10599 | && (mode_x == SImode || mode_x == DImode) | |
b06335f9 KT |
10600 | && (GET_MODE (XEXP (x, 0)) == HImode || GET_MODE (XEXP (x, 0)) == QImode) |
10601 | && (code == EQ || code == NE)) | |
10602 | return CC_NZmode; | |
10603 | ||
f7343f20 | 10604 | if ((mode_x == SImode || mode_x == DImode) |
43e9d192 IB |
10605 | && y == const0_rtx |
10606 | && (code == EQ || code == NE || code == LT || code == GE) | |
f7343f20 RE |
10607 | && (code_x == PLUS || code_x == MINUS || code_x == AND |
10608 | || code_x == NEG | |
10609 | || (code_x == ZERO_EXTRACT && CONST_INT_P (XEXP (x, 1)) | |
7325d85a | 10610 | && CONST_INT_P (XEXP (x, 2))))) |
43e9d192 IB |
10611 | return CC_NZmode; |
10612 | ||
1c992d1e | 10613 | /* A compare with a shifted operand. Because of canonicalization, |
43e9d192 IB |
10614 | the comparison will have to be swapped when we emit the assembly |
10615 | code. */ | |
f7343f20 | 10616 | if ((mode_x == SImode || mode_x == DImode) |
3793ecc1 | 10617 | && (REG_P (y) || SUBREG_P (y) || y == const0_rtx) |
f7343f20 RE |
10618 | && (code_x == ASHIFT || code_x == ASHIFTRT |
10619 | || code_x == LSHIFTRT | |
10620 | || code_x == ZERO_EXTEND || code_x == SIGN_EXTEND)) | |
43e9d192 IB |
10621 | return CC_SWPmode; |
10622 | ||
1c992d1e RE |
10623 | /* Similarly for a negated operand, but we can only do this for |
10624 | equalities. */ | |
f7343f20 | 10625 | if ((mode_x == SImode || mode_x == DImode) |
3793ecc1 | 10626 | && (REG_P (y) || SUBREG_P (y)) |
1c992d1e | 10627 | && (code == EQ || code == NE) |
f7343f20 | 10628 | && code_x == NEG) |
1c992d1e RE |
10629 | return CC_Zmode; |
10630 | ||
f7343f20 RE |
10631 | /* A test for unsigned overflow from an addition. */ |
10632 | if ((mode_x == DImode || mode_x == TImode) | |
10633 | && (code == LTU || code == GEU) | |
10634 | && code_x == PLUS | |
10635 | && rtx_equal_p (XEXP (x, 0), y)) | |
ef22810a RH |
10636 | return CC_Cmode; |
10637 | ||
f7343f20 RE |
10638 | /* A test for unsigned overflow from an add with carry. */ |
10639 | if ((mode_x == DImode || mode_x == TImode) | |
10640 | && (code == LTU || code == GEU) | |
10641 | && code_x == PLUS | |
10642 | && CONST_SCALAR_INT_P (y) | |
10643 | && (rtx_mode_t (y, mode_x) | |
10644 | == (wi::shwi (1, mode_x) | |
10645 | << (GET_MODE_BITSIZE (mode_x).to_constant () / 2)))) | |
10646 | return CC_ADCmode; | |
10647 | ||
30c46053 | 10648 | /* A test for signed overflow. */ |
f7343f20 | 10649 | if ((mode_x == DImode || mode_x == TImode) |
30c46053 | 10650 | && code == NE |
f7343f20 | 10651 | && code_x == PLUS |
30c46053 MC |
10652 | && GET_CODE (y) == SIGN_EXTEND) |
10653 | return CC_Vmode; | |
10654 | ||
43e9d192 IB |
10655 | /* For everything else, return CCmode. */ |
10656 | return CCmode; | |
10657 | } | |
10658 | ||
3dfa7055 | 10659 | static int |
b8506a8a | 10660 | aarch64_get_condition_code_1 (machine_mode, enum rtx_code); |
3dfa7055 | 10661 | |
cd5660ab | 10662 | int |
43e9d192 IB |
10663 | aarch64_get_condition_code (rtx x) |
10664 | { | |
ef4bddc2 | 10665 | machine_mode mode = GET_MODE (XEXP (x, 0)); |
43e9d192 IB |
10666 | enum rtx_code comp_code = GET_CODE (x); |
10667 | ||
10668 | if (GET_MODE_CLASS (mode) != MODE_CC) | |
10669 | mode = SELECT_CC_MODE (comp_code, XEXP (x, 0), XEXP (x, 1)); | |
3dfa7055 ZC |
10670 | return aarch64_get_condition_code_1 (mode, comp_code); |
10671 | } | |
43e9d192 | 10672 | |
3dfa7055 | 10673 | static int |
b8506a8a | 10674 | aarch64_get_condition_code_1 (machine_mode mode, enum rtx_code comp_code) |
3dfa7055 | 10675 | { |
43e9d192 IB |
10676 | switch (mode) |
10677 | { | |
4e10a5a7 RS |
10678 | case E_CCFPmode: |
10679 | case E_CCFPEmode: | |
43e9d192 IB |
10680 | switch (comp_code) |
10681 | { | |
10682 | case GE: return AARCH64_GE; | |
10683 | case GT: return AARCH64_GT; | |
10684 | case LE: return AARCH64_LS; | |
10685 | case LT: return AARCH64_MI; | |
10686 | case NE: return AARCH64_NE; | |
10687 | case EQ: return AARCH64_EQ; | |
10688 | case ORDERED: return AARCH64_VC; | |
10689 | case UNORDERED: return AARCH64_VS; | |
10690 | case UNLT: return AARCH64_LT; | |
10691 | case UNLE: return AARCH64_LE; | |
10692 | case UNGT: return AARCH64_HI; | |
10693 | case UNGE: return AARCH64_PL; | |
cd5660ab | 10694 | default: return -1; |
43e9d192 IB |
10695 | } |
10696 | break; | |
10697 | ||
4e10a5a7 | 10698 | case E_CCmode: |
43e9d192 IB |
10699 | switch (comp_code) |
10700 | { | |
10701 | case NE: return AARCH64_NE; | |
10702 | case EQ: return AARCH64_EQ; | |
10703 | case GE: return AARCH64_GE; | |
10704 | case GT: return AARCH64_GT; | |
10705 | case LE: return AARCH64_LE; | |
10706 | case LT: return AARCH64_LT; | |
10707 | case GEU: return AARCH64_CS; | |
10708 | case GTU: return AARCH64_HI; | |
10709 | case LEU: return AARCH64_LS; | |
10710 | case LTU: return AARCH64_CC; | |
cd5660ab | 10711 | default: return -1; |
43e9d192 IB |
10712 | } |
10713 | break; | |
10714 | ||
4e10a5a7 | 10715 | case E_CC_SWPmode: |
43e9d192 IB |
10716 | switch (comp_code) |
10717 | { | |
10718 | case NE: return AARCH64_NE; | |
10719 | case EQ: return AARCH64_EQ; | |
10720 | case GE: return AARCH64_LE; | |
10721 | case GT: return AARCH64_LT; | |
10722 | case LE: return AARCH64_GE; | |
10723 | case LT: return AARCH64_GT; | |
10724 | case GEU: return AARCH64_LS; | |
10725 | case GTU: return AARCH64_CC; | |
10726 | case LEU: return AARCH64_CS; | |
10727 | case LTU: return AARCH64_HI; | |
cd5660ab | 10728 | default: return -1; |
43e9d192 IB |
10729 | } |
10730 | break; | |
10731 | ||
57d6f4d0 RS |
10732 | case E_CC_NZCmode: |
10733 | switch (comp_code) | |
10734 | { | |
10735 | case NE: return AARCH64_NE; /* = any */ | |
10736 | case EQ: return AARCH64_EQ; /* = none */ | |
10737 | case GE: return AARCH64_PL; /* = nfrst */ | |
10738 | case LT: return AARCH64_MI; /* = first */ | |
10739 | case GEU: return AARCH64_CS; /* = nlast */ | |
10740 | case GTU: return AARCH64_HI; /* = pmore */ | |
10741 | case LEU: return AARCH64_LS; /* = plast */ | |
10742 | case LTU: return AARCH64_CC; /* = last */ | |
10743 | default: return -1; | |
10744 | } | |
10745 | break; | |
10746 | ||
4e10a5a7 | 10747 | case E_CC_NZmode: |
43e9d192 IB |
10748 | switch (comp_code) |
10749 | { | |
10750 | case NE: return AARCH64_NE; | |
10751 | case EQ: return AARCH64_EQ; | |
10752 | case GE: return AARCH64_PL; | |
10753 | case LT: return AARCH64_MI; | |
cd5660ab | 10754 | default: return -1; |
43e9d192 IB |
10755 | } |
10756 | break; | |
10757 | ||
4e10a5a7 | 10758 | case E_CC_Zmode: |
1c992d1e RE |
10759 | switch (comp_code) |
10760 | { | |
10761 | case NE: return AARCH64_NE; | |
10762 | case EQ: return AARCH64_EQ; | |
cd5660ab | 10763 | default: return -1; |
1c992d1e RE |
10764 | } |
10765 | break; | |
10766 | ||
4e10a5a7 | 10767 | case E_CC_Cmode: |
ef22810a RH |
10768 | switch (comp_code) |
10769 | { | |
f7343f20 RE |
10770 | case LTU: return AARCH64_CS; |
10771 | case GEU: return AARCH64_CC; | |
10772 | default: return -1; | |
10773 | } | |
10774 | break; | |
10775 | ||
10776 | case E_CC_ADCmode: | |
10777 | switch (comp_code) | |
10778 | { | |
10779 | case GEU: return AARCH64_CS; | |
10780 | case LTU: return AARCH64_CC; | |
ef22810a RH |
10781 | default: return -1; |
10782 | } | |
10783 | break; | |
10784 | ||
30c46053 MC |
10785 | case E_CC_Vmode: |
10786 | switch (comp_code) | |
10787 | { | |
10788 | case NE: return AARCH64_VS; | |
10789 | case EQ: return AARCH64_VC; | |
10790 | default: return -1; | |
10791 | } | |
10792 | break; | |
10793 | ||
43e9d192 | 10794 | default: |
cd5660ab | 10795 | return -1; |
43e9d192 | 10796 | } |
3dfa7055 | 10797 | |
3dfa7055 | 10798 | return -1; |
43e9d192 IB |
10799 | } |
10800 | ||
ddeabd3e AL |
10801 | bool |
10802 | aarch64_const_vec_all_same_in_range_p (rtx x, | |
6a70badb RS |
10803 | HOST_WIDE_INT minval, |
10804 | HOST_WIDE_INT maxval) | |
ddeabd3e | 10805 | { |
6a70badb RS |
10806 | rtx elt; |
10807 | return (const_vec_duplicate_p (x, &elt) | |
10808 | && CONST_INT_P (elt) | |
10809 | && IN_RANGE (INTVAL (elt), minval, maxval)); | |
ddeabd3e AL |
10810 | } |
10811 | ||
10812 | bool | |
10813 | aarch64_const_vec_all_same_int_p (rtx x, HOST_WIDE_INT val) | |
10814 | { | |
10815 | return aarch64_const_vec_all_same_in_range_p (x, val, val); | |
10816 | } | |
10817 | ||
43cacb12 RS |
10818 | /* Return true if VEC is a constant in which every element is in the range |
10819 | [MINVAL, MAXVAL]. The elements do not need to have the same value. */ | |
10820 | ||
10821 | static bool | |
10822 | aarch64_const_vec_all_in_range_p (rtx vec, | |
10823 | HOST_WIDE_INT minval, | |
10824 | HOST_WIDE_INT maxval) | |
10825 | { | |
568b9c0e | 10826 | if (!CONST_VECTOR_P (vec) |
43cacb12 RS |
10827 | || GET_MODE_CLASS (GET_MODE (vec)) != MODE_VECTOR_INT) |
10828 | return false; | |
10829 | ||
10830 | int nunits; | |
10831 | if (!CONST_VECTOR_STEPPED_P (vec)) | |
10832 | nunits = const_vector_encoded_nelts (vec); | |
10833 | else if (!CONST_VECTOR_NUNITS (vec).is_constant (&nunits)) | |
10834 | return false; | |
10835 | ||
10836 | for (int i = 0; i < nunits; i++) | |
10837 | { | |
10838 | rtx vec_elem = CONST_VECTOR_ELT (vec, i); | |
10839 | if (!CONST_INT_P (vec_elem) | |
10840 | || !IN_RANGE (INTVAL (vec_elem), minval, maxval)) | |
10841 | return false; | |
10842 | } | |
10843 | return true; | |
10844 | } | |
43e9d192 | 10845 | |
cf670503 ZC |
10846 | /* N Z C V. */ |
10847 | #define AARCH64_CC_V 1 | |
10848 | #define AARCH64_CC_C (1 << 1) | |
10849 | #define AARCH64_CC_Z (1 << 2) | |
10850 | #define AARCH64_CC_N (1 << 3) | |
10851 | ||
c8012fbc WD |
10852 | /* N Z C V flags for ccmp. Indexed by AARCH64_COND_CODE. */ |
10853 | static const int aarch64_nzcv_codes[] = | |
10854 | { | |
10855 | 0, /* EQ, Z == 1. */ | |
10856 | AARCH64_CC_Z, /* NE, Z == 0. */ | |
10857 | 0, /* CS, C == 1. */ | |
10858 | AARCH64_CC_C, /* CC, C == 0. */ | |
10859 | 0, /* MI, N == 1. */ | |
10860 | AARCH64_CC_N, /* PL, N == 0. */ | |
10861 | 0, /* VS, V == 1. */ | |
10862 | AARCH64_CC_V, /* VC, V == 0. */ | |
10863 | 0, /* HI, C ==1 && Z == 0. */ | |
10864 | AARCH64_CC_C, /* LS, !(C == 1 && Z == 0). */ | |
10865 | AARCH64_CC_V, /* GE, N == V. */ | |
10866 | 0, /* LT, N != V. */ | |
10867 | AARCH64_CC_Z, /* GT, Z == 0 && N == V. */ | |
10868 | 0, /* LE, !(Z == 0 && N == V). */ | |
10869 | 0, /* AL, Any. */ | |
10870 | 0 /* NV, Any. */ | |
cf670503 ZC |
10871 | }; |
10872 | ||
43cacb12 RS |
10873 | /* Print floating-point vector immediate operand X to F, negating it |
10874 | first if NEGATE is true. Return true on success, false if it isn't | |
10875 | a constant we can handle. */ | |
10876 | ||
10877 | static bool | |
10878 | aarch64_print_vector_float_operand (FILE *f, rtx x, bool negate) | |
10879 | { | |
10880 | rtx elt; | |
10881 | ||
10882 | if (!const_vec_duplicate_p (x, &elt)) | |
10883 | return false; | |
10884 | ||
10885 | REAL_VALUE_TYPE r = *CONST_DOUBLE_REAL_VALUE (elt); | |
10886 | if (negate) | |
10887 | r = real_value_negate (&r); | |
10888 | ||
d29f7dd5 RS |
10889 | /* Handle the SVE single-bit immediates specially, since they have a |
10890 | fixed form in the assembly syntax. */ | |
43cacb12 RS |
10891 | if (real_equal (&r, &dconst0)) |
10892 | asm_fprintf (f, "0.0"); | |
a19ba9e1 RS |
10893 | else if (real_equal (&r, &dconst2)) |
10894 | asm_fprintf (f, "2.0"); | |
43cacb12 RS |
10895 | else if (real_equal (&r, &dconst1)) |
10896 | asm_fprintf (f, "1.0"); | |
10897 | else if (real_equal (&r, &dconsthalf)) | |
10898 | asm_fprintf (f, "0.5"); | |
10899 | else | |
d29f7dd5 RS |
10900 | { |
10901 | const int buf_size = 20; | |
10902 | char float_buf[buf_size] = {'\0'}; | |
10903 | real_to_decimal_for_mode (float_buf, &r, buf_size, buf_size, | |
10904 | 1, GET_MODE (elt)); | |
10905 | asm_fprintf (f, "%s", float_buf); | |
10906 | } | |
43cacb12 RS |
10907 | |
10908 | return true; | |
10909 | } | |
10910 | ||
9f4cbab8 RS |
10911 | /* Return the equivalent letter for size. */ |
10912 | static char | |
10913 | sizetochar (int size) | |
10914 | { | |
10915 | switch (size) | |
10916 | { | |
10917 | case 64: return 'd'; | |
10918 | case 32: return 's'; | |
10919 | case 16: return 'h'; | |
10920 | case 8 : return 'b'; | |
10921 | default: gcc_unreachable (); | |
10922 | } | |
10923 | } | |
10924 | ||
bcf19844 JW |
10925 | /* Print operand X to file F in a target specific manner according to CODE. |
10926 | The acceptable formatting commands given by CODE are: | |
10927 | 'c': An integer or symbol address without a preceding # | |
10928 | sign. | |
43cacb12 RS |
10929 | 'C': Take the duplicated element in a vector constant |
10930 | and print it in hex. | |
10931 | 'D': Take the duplicated element in a vector constant | |
10932 | and print it as an unsigned integer, in decimal. | |
bcf19844 | 10933 | 'e': Print the sign/zero-extend size as a character 8->b, |
d113ece6 RS |
10934 | 16->h, 32->w. Can also be used for masks: |
10935 | 0xff->b, 0xffff->h, 0xffffffff->w. | |
d29f7dd5 RS |
10936 | 'I': If the operand is a duplicated vector constant, |
10937 | replace it with the duplicated scalar. If the | |
10938 | operand is then a floating-point constant, replace | |
10939 | it with the integer bit representation. Print the | |
10940 | transformed constant as a signed decimal number. | |
bcf19844 JW |
10941 | 'p': Prints N such that 2^N == X (X must be power of 2 and |
10942 | const int). | |
10943 | 'P': Print the number of non-zero bits in X (a const_int). | |
10944 | 'H': Print the higher numbered register of a pair (TImode) | |
10945 | of regs. | |
10946 | 'm': Print a condition (eq, ne, etc). | |
10947 | 'M': Same as 'm', but invert condition. | |
43cacb12 RS |
10948 | 'N': Take the duplicated element in a vector constant |
10949 | and print the negative of it in decimal. | |
bcf19844 JW |
10950 | 'b/h/s/d/q': Print a scalar FP/SIMD register name. |
10951 | 'S/T/U/V': Print a FP/SIMD register name for a register list. | |
10952 | The register printed is the FP/SIMD register name | |
10953 | of X + 0/1/2/3 for S/T/U/V. | |
e3f15286 | 10954 | 'R': Print a scalar Integer/FP/SIMD register name + 1. |
bcf19844 JW |
10955 | 'X': Print bottom 16 bits of integer constant in hex. |
10956 | 'w/x': Print a general register name or the zero register | |
10957 | (32-bit or 64-bit). | |
10958 | '0': Print a normal operand, if it's a general register, | |
10959 | then we assume DImode. | |
10960 | 'k': Print NZCV for conditional compare instructions. | |
10961 | 'A': Output address constant representing the first | |
10962 | argument of X, specifying a relocation offset | |
10963 | if appropriate. | |
10964 | 'L': Output constant address specified by X | |
10965 | with a relocation offset if appropriate. | |
10966 | 'G': Prints address of X, specifying a PC relative | |
e69a816d WD |
10967 | relocation mode if appropriate. |
10968 | 'y': Output address of LDP or STP - this is used for | |
10969 | some LDP/STPs which don't use a PARALLEL in their | |
10970 | pattern (so the mode needs to be adjusted). | |
10971 | 'z': Output address of a typical LDP or STP. */ | |
bcf19844 | 10972 | |
cc8ca59e JB |
10973 | static void |
10974 | aarch64_print_operand (FILE *f, rtx x, int code) | |
43e9d192 | 10975 | { |
43cacb12 | 10976 | rtx elt; |
43e9d192 IB |
10977 | switch (code) |
10978 | { | |
f541a481 | 10979 | case 'c': |
74b27d8e RS |
10980 | if (CONST_INT_P (x)) |
10981 | fprintf (f, HOST_WIDE_INT_PRINT_DEC, INTVAL (x)); | |
10982 | else | |
f541a481 | 10983 | { |
74b27d8e RS |
10984 | poly_int64 offset; |
10985 | rtx base = strip_offset_and_salt (x, &offset); | |
10986 | if (SYMBOL_REF_P (base)) | |
10987 | output_addr_const (f, x); | |
10988 | else | |
10989 | output_operand_lossage ("unsupported operand for code '%c'", code); | |
f541a481 KT |
10990 | } |
10991 | break; | |
10992 | ||
43e9d192 | 10993 | case 'e': |
43e9d192 | 10994 | { |
d113ece6 RS |
10995 | x = unwrap_const_vec_duplicate (x); |
10996 | if (!CONST_INT_P (x)) | |
43e9d192 IB |
10997 | { |
10998 | output_operand_lossage ("invalid operand for '%%%c'", code); | |
10999 | return; | |
11000 | } | |
11001 | ||
d113ece6 RS |
11002 | HOST_WIDE_INT val = INTVAL (x); |
11003 | if ((val & ~7) == 8 || val == 0xff) | |
11004 | fputc ('b', f); | |
11005 | else if ((val & ~7) == 16 || val == 0xffff) | |
11006 | fputc ('h', f); | |
11007 | else if ((val & ~7) == 32 || val == 0xffffffff) | |
11008 | fputc ('w', f); | |
11009 | else | |
43e9d192 | 11010 | { |
43e9d192 IB |
11011 | output_operand_lossage ("invalid operand for '%%%c'", code); |
11012 | return; | |
11013 | } | |
11014 | } | |
11015 | break; | |
11016 | ||
11017 | case 'p': | |
11018 | { | |
11019 | int n; | |
11020 | ||
4aa81c2e | 11021 | if (!CONST_INT_P (x) || (n = exact_log2 (INTVAL (x))) < 0) |
43e9d192 IB |
11022 | { |
11023 | output_operand_lossage ("invalid operand for '%%%c'", code); | |
11024 | return; | |
11025 | } | |
11026 | ||
11027 | asm_fprintf (f, "%d", n); | |
11028 | } | |
11029 | break; | |
11030 | ||
11031 | case 'P': | |
4aa81c2e | 11032 | if (!CONST_INT_P (x)) |
43e9d192 IB |
11033 | { |
11034 | output_operand_lossage ("invalid operand for '%%%c'", code); | |
11035 | return; | |
11036 | } | |
11037 | ||
8d55c61b | 11038 | asm_fprintf (f, "%u", popcount_hwi (INTVAL (x))); |
43e9d192 IB |
11039 | break; |
11040 | ||
11041 | case 'H': | |
c0111dc4 RE |
11042 | if (x == const0_rtx) |
11043 | { | |
11044 | asm_fprintf (f, "xzr"); | |
11045 | break; | |
11046 | } | |
11047 | ||
4aa81c2e | 11048 | if (!REG_P (x) || !GP_REGNUM_P (REGNO (x) + 1)) |
43e9d192 IB |
11049 | { |
11050 | output_operand_lossage ("invalid operand for '%%%c'", code); | |
11051 | return; | |
11052 | } | |
11053 | ||
01a3a324 | 11054 | asm_fprintf (f, "%s", reg_names [REGNO (x) + 1]); |
43e9d192 IB |
11055 | break; |
11056 | ||
d29f7dd5 RS |
11057 | case 'I': |
11058 | { | |
11059 | x = aarch64_bit_representation (unwrap_const_vec_duplicate (x)); | |
11060 | if (CONST_INT_P (x)) | |
11061 | asm_fprintf (f, "%wd", INTVAL (x)); | |
11062 | else | |
11063 | { | |
11064 | output_operand_lossage ("invalid operand for '%%%c'", code); | |
11065 | return; | |
11066 | } | |
11067 | break; | |
11068 | } | |
11069 | ||
43e9d192 | 11070 | case 'M': |
c8012fbc | 11071 | case 'm': |
cd5660ab KT |
11072 | { |
11073 | int cond_code; | |
c8012fbc WD |
11074 | /* CONST_TRUE_RTX means al/nv (al is the default, don't print it). */ |
11075 | if (x == const_true_rtx) | |
cd5660ab | 11076 | { |
c8012fbc WD |
11077 | if (code == 'M') |
11078 | fputs ("nv", f); | |
cd5660ab KT |
11079 | return; |
11080 | } | |
43e9d192 | 11081 | |
cd5660ab KT |
11082 | if (!COMPARISON_P (x)) |
11083 | { | |
11084 | output_operand_lossage ("invalid operand for '%%%c'", code); | |
11085 | return; | |
11086 | } | |
c8012fbc | 11087 | |
cd5660ab KT |
11088 | cond_code = aarch64_get_condition_code (x); |
11089 | gcc_assert (cond_code >= 0); | |
c8012fbc WD |
11090 | if (code == 'M') |
11091 | cond_code = AARCH64_INVERSE_CONDITION_CODE (cond_code); | |
57d6f4d0 RS |
11092 | if (GET_MODE (XEXP (x, 0)) == CC_NZCmode) |
11093 | fputs (aarch64_sve_condition_codes[cond_code], f); | |
11094 | else | |
11095 | fputs (aarch64_condition_codes[cond_code], f); | |
cd5660ab | 11096 | } |
43e9d192 IB |
11097 | break; |
11098 | ||
43cacb12 RS |
11099 | case 'N': |
11100 | if (!const_vec_duplicate_p (x, &elt)) | |
11101 | { | |
11102 | output_operand_lossage ("invalid vector constant"); | |
11103 | return; | |
11104 | } | |
11105 | ||
11106 | if (GET_MODE_CLASS (GET_MODE (x)) == MODE_VECTOR_INT) | |
1c0c371d | 11107 | asm_fprintf (f, "%wd", (HOST_WIDE_INT) -UINTVAL (elt)); |
43cacb12 RS |
11108 | else if (GET_MODE_CLASS (GET_MODE (x)) == MODE_VECTOR_FLOAT |
11109 | && aarch64_print_vector_float_operand (f, x, true)) | |
11110 | ; | |
11111 | else | |
11112 | { | |
11113 | output_operand_lossage ("invalid vector constant"); | |
11114 | return; | |
11115 | } | |
11116 | break; | |
11117 | ||
43e9d192 IB |
11118 | case 'b': |
11119 | case 'h': | |
11120 | case 's': | |
11121 | case 'd': | |
11122 | case 'q': | |
43e9d192 IB |
11123 | if (!REG_P (x) || !FP_REGNUM_P (REGNO (x))) |
11124 | { | |
11125 | output_operand_lossage ("incompatible floating point / vector register operand for '%%%c'", code); | |
11126 | return; | |
11127 | } | |
50ce6f88 | 11128 | asm_fprintf (f, "%c%d", code, REGNO (x) - V0_REGNUM); |
43e9d192 IB |
11129 | break; |
11130 | ||
11131 | case 'S': | |
11132 | case 'T': | |
11133 | case 'U': | |
11134 | case 'V': | |
43e9d192 IB |
11135 | if (!REG_P (x) || !FP_REGNUM_P (REGNO (x))) |
11136 | { | |
11137 | output_operand_lossage ("incompatible floating point / vector register operand for '%%%c'", code); | |
11138 | return; | |
11139 | } | |
43cacb12 RS |
11140 | asm_fprintf (f, "%c%d", |
11141 | aarch64_sve_data_mode_p (GET_MODE (x)) ? 'z' : 'v', | |
11142 | REGNO (x) - V0_REGNUM + (code - 'S')); | |
43e9d192 IB |
11143 | break; |
11144 | ||
2d8c6dc1 | 11145 | case 'R': |
66f206b8 JW |
11146 | if (REG_P (x) && FP_REGNUM_P (REGNO (x)) |
11147 | && (aarch64_advsimd_partial_struct_mode_p (GET_MODE (x)))) | |
11148 | asm_fprintf (f, "d%d", REGNO (x) - V0_REGNUM + 1); | |
11149 | else if (REG_P (x) && FP_REGNUM_P (REGNO (x))) | |
e3f15286 RH |
11150 | asm_fprintf (f, "q%d", REGNO (x) - V0_REGNUM + 1); |
11151 | else if (REG_P (x) && GP_REGNUM_P (REGNO (x))) | |
11152 | asm_fprintf (f, "x%d", REGNO (x) - R0_REGNUM + 1); | |
11153 | else | |
11154 | output_operand_lossage ("incompatible register operand for '%%%c'", | |
11155 | code); | |
2d8c6dc1 AH |
11156 | break; |
11157 | ||
a05c0ddf | 11158 | case 'X': |
4aa81c2e | 11159 | if (!CONST_INT_P (x)) |
a05c0ddf IB |
11160 | { |
11161 | output_operand_lossage ("invalid operand for '%%%c'", code); | |
11162 | return; | |
11163 | } | |
50d38551 | 11164 | asm_fprintf (f, "0x%wx", UINTVAL (x) & 0xffff); |
a05c0ddf IB |
11165 | break; |
11166 | ||
43cacb12 RS |
11167 | case 'C': |
11168 | { | |
11169 | /* Print a replicated constant in hex. */ | |
11170 | if (!const_vec_duplicate_p (x, &elt) || !CONST_INT_P (elt)) | |
11171 | { | |
11172 | output_operand_lossage ("invalid operand for '%%%c'", code); | |
11173 | return; | |
11174 | } | |
11175 | scalar_mode inner_mode = GET_MODE_INNER (GET_MODE (x)); | |
11176 | asm_fprintf (f, "0x%wx", UINTVAL (elt) & GET_MODE_MASK (inner_mode)); | |
11177 | } | |
11178 | break; | |
11179 | ||
11180 | case 'D': | |
11181 | { | |
11182 | /* Print a replicated constant in decimal, treating it as | |
11183 | unsigned. */ | |
11184 | if (!const_vec_duplicate_p (x, &elt) || !CONST_INT_P (elt)) | |
11185 | { | |
11186 | output_operand_lossage ("invalid operand for '%%%c'", code); | |
11187 | return; | |
11188 | } | |
11189 | scalar_mode inner_mode = GET_MODE_INNER (GET_MODE (x)); | |
11190 | asm_fprintf (f, "%wd", UINTVAL (elt) & GET_MODE_MASK (inner_mode)); | |
11191 | } | |
11192 | break; | |
11193 | ||
43e9d192 IB |
11194 | case 'w': |
11195 | case 'x': | |
3520f7cc JG |
11196 | if (x == const0_rtx |
11197 | || (CONST_DOUBLE_P (x) && aarch64_float_const_zero_rtx_p (x))) | |
43e9d192 | 11198 | { |
50ce6f88 | 11199 | asm_fprintf (f, "%czr", code); |
43e9d192 IB |
11200 | break; |
11201 | } | |
11202 | ||
11203 | if (REG_P (x) && GP_REGNUM_P (REGNO (x))) | |
11204 | { | |
50ce6f88 | 11205 | asm_fprintf (f, "%c%d", code, REGNO (x) - R0_REGNUM); |
43e9d192 IB |
11206 | break; |
11207 | } | |
11208 | ||
11209 | if (REG_P (x) && REGNO (x) == SP_REGNUM) | |
11210 | { | |
50ce6f88 | 11211 | asm_fprintf (f, "%ssp", code == 'w' ? "w" : ""); |
43e9d192 IB |
11212 | break; |
11213 | } | |
11214 | ||
11215 | /* Fall through */ | |
11216 | ||
11217 | case 0: | |
43e9d192 IB |
11218 | if (x == NULL) |
11219 | { | |
11220 | output_operand_lossage ("missing operand"); | |
11221 | return; | |
11222 | } | |
11223 | ||
11224 | switch (GET_CODE (x)) | |
11225 | { | |
11226 | case REG: | |
43cacb12 | 11227 | if (aarch64_sve_data_mode_p (GET_MODE (x))) |
9f4cbab8 RS |
11228 | { |
11229 | if (REG_NREGS (x) == 1) | |
11230 | asm_fprintf (f, "z%d", REGNO (x) - V0_REGNUM); | |
11231 | else | |
11232 | { | |
11233 | char suffix | |
11234 | = sizetochar (GET_MODE_UNIT_BITSIZE (GET_MODE (x))); | |
11235 | asm_fprintf (f, "{z%d.%c - z%d.%c}", | |
11236 | REGNO (x) - V0_REGNUM, suffix, | |
11237 | END_REGNO (x) - V0_REGNUM - 1, suffix); | |
11238 | } | |
11239 | } | |
43cacb12 RS |
11240 | else |
11241 | asm_fprintf (f, "%s", reg_names [REGNO (x)]); | |
43e9d192 IB |
11242 | break; |
11243 | ||
11244 | case MEM: | |
cc8ca59e | 11245 | output_address (GET_MODE (x), XEXP (x, 0)); |
43e9d192 IB |
11246 | break; |
11247 | ||
11248 | case LABEL_REF: | |
11249 | case SYMBOL_REF: | |
11250 | output_addr_const (asm_out_file, x); | |
11251 | break; | |
11252 | ||
11253 | case CONST_INT: | |
11254 | asm_fprintf (f, "%wd", INTVAL (x)); | |
11255 | break; | |
11256 | ||
43cacb12 RS |
11257 | case CONST: |
11258 | if (!VECTOR_MODE_P (GET_MODE (x))) | |
3520f7cc | 11259 | { |
43cacb12 RS |
11260 | output_addr_const (asm_out_file, x); |
11261 | break; | |
3520f7cc | 11262 | } |
43cacb12 RS |
11263 | /* fall through */ |
11264 | ||
11265 | case CONST_VECTOR: | |
11266 | if (!const_vec_duplicate_p (x, &elt)) | |
3520f7cc | 11267 | { |
43cacb12 RS |
11268 | output_operand_lossage ("invalid vector constant"); |
11269 | return; | |
3520f7cc | 11270 | } |
43cacb12 RS |
11271 | |
11272 | if (GET_MODE_CLASS (GET_MODE (x)) == MODE_VECTOR_INT) | |
11273 | asm_fprintf (f, "%wd", INTVAL (elt)); | |
11274 | else if (GET_MODE_CLASS (GET_MODE (x)) == MODE_VECTOR_FLOAT | |
11275 | && aarch64_print_vector_float_operand (f, x, false)) | |
11276 | ; | |
3520f7cc | 11277 | else |
43cacb12 RS |
11278 | { |
11279 | output_operand_lossage ("invalid vector constant"); | |
11280 | return; | |
11281 | } | |
43e9d192 IB |
11282 | break; |
11283 | ||
3520f7cc | 11284 | case CONST_DOUBLE: |
2ca5b430 KT |
11285 | /* Since we define TARGET_SUPPORTS_WIDE_INT we shouldn't ever |
11286 | be getting CONST_DOUBLEs holding integers. */ | |
11287 | gcc_assert (GET_MODE (x) != VOIDmode); | |
11288 | if (aarch64_float_const_zero_rtx_p (x)) | |
3520f7cc JG |
11289 | { |
11290 | fputc ('0', f); | |
11291 | break; | |
11292 | } | |
11293 | else if (aarch64_float_const_representable_p (x)) | |
11294 | { | |
11295 | #define buf_size 20 | |
11296 | char float_buf[buf_size] = {'\0'}; | |
34a72c33 RS |
11297 | real_to_decimal_for_mode (float_buf, |
11298 | CONST_DOUBLE_REAL_VALUE (x), | |
3520f7cc JG |
11299 | buf_size, buf_size, |
11300 | 1, GET_MODE (x)); | |
11301 | asm_fprintf (asm_out_file, "%s", float_buf); | |
11302 | break; | |
11303 | #undef buf_size | |
11304 | } | |
11305 | output_operand_lossage ("invalid constant"); | |
11306 | return; | |
43e9d192 IB |
11307 | default: |
11308 | output_operand_lossage ("invalid operand"); | |
11309 | return; | |
11310 | } | |
11311 | break; | |
11312 | ||
11313 | case 'A': | |
11314 | if (GET_CODE (x) == HIGH) | |
11315 | x = XEXP (x, 0); | |
11316 | ||
a6e0bfa7 | 11317 | switch (aarch64_classify_symbolic_expression (x)) |
43e9d192 | 11318 | { |
6642bdb4 | 11319 | case SYMBOL_SMALL_GOT_4G: |
43e9d192 IB |
11320 | asm_fprintf (asm_out_file, ":got:"); |
11321 | break; | |
11322 | ||
11323 | case SYMBOL_SMALL_TLSGD: | |
11324 | asm_fprintf (asm_out_file, ":tlsgd:"); | |
11325 | break; | |
11326 | ||
11327 | case SYMBOL_SMALL_TLSDESC: | |
11328 | asm_fprintf (asm_out_file, ":tlsdesc:"); | |
11329 | break; | |
11330 | ||
79496620 | 11331 | case SYMBOL_SMALL_TLSIE: |
43e9d192 IB |
11332 | asm_fprintf (asm_out_file, ":gottprel:"); |
11333 | break; | |
11334 | ||
d18ba284 | 11335 | case SYMBOL_TLSLE24: |
43e9d192 IB |
11336 | asm_fprintf (asm_out_file, ":tprel:"); |
11337 | break; | |
11338 | ||
87dd8ab0 MS |
11339 | case SYMBOL_TINY_GOT: |
11340 | gcc_unreachable (); | |
11341 | break; | |
11342 | ||
43e9d192 IB |
11343 | default: |
11344 | break; | |
11345 | } | |
11346 | output_addr_const (asm_out_file, x); | |
11347 | break; | |
11348 | ||
11349 | case 'L': | |
a6e0bfa7 | 11350 | switch (aarch64_classify_symbolic_expression (x)) |
43e9d192 | 11351 | { |
6642bdb4 | 11352 | case SYMBOL_SMALL_GOT_4G: |
a195c727 | 11353 | asm_fprintf (asm_out_file, ":got_lo12:"); |
43e9d192 IB |
11354 | break; |
11355 | ||
11356 | case SYMBOL_SMALL_TLSGD: | |
11357 | asm_fprintf (asm_out_file, ":tlsgd_lo12:"); | |
11358 | break; | |
11359 | ||
11360 | case SYMBOL_SMALL_TLSDESC: | |
11361 | asm_fprintf (asm_out_file, ":tlsdesc_lo12:"); | |
11362 | break; | |
11363 | ||
79496620 | 11364 | case SYMBOL_SMALL_TLSIE: |
43e9d192 IB |
11365 | asm_fprintf (asm_out_file, ":gottprel_lo12:"); |
11366 | break; | |
11367 | ||
cbf5629e JW |
11368 | case SYMBOL_TLSLE12: |
11369 | asm_fprintf (asm_out_file, ":tprel_lo12:"); | |
11370 | break; | |
11371 | ||
d18ba284 | 11372 | case SYMBOL_TLSLE24: |
43e9d192 IB |
11373 | asm_fprintf (asm_out_file, ":tprel_lo12_nc:"); |
11374 | break; | |
11375 | ||
87dd8ab0 MS |
11376 | case SYMBOL_TINY_GOT: |
11377 | asm_fprintf (asm_out_file, ":got:"); | |
11378 | break; | |
11379 | ||
5ae7caad JW |
11380 | case SYMBOL_TINY_TLSIE: |
11381 | asm_fprintf (asm_out_file, ":gottprel:"); | |
11382 | break; | |
11383 | ||
43e9d192 IB |
11384 | default: |
11385 | break; | |
11386 | } | |
11387 | output_addr_const (asm_out_file, x); | |
11388 | break; | |
11389 | ||
11390 | case 'G': | |
a6e0bfa7 | 11391 | switch (aarch64_classify_symbolic_expression (x)) |
43e9d192 | 11392 | { |
d18ba284 | 11393 | case SYMBOL_TLSLE24: |
43e9d192 IB |
11394 | asm_fprintf (asm_out_file, ":tprel_hi12:"); |
11395 | break; | |
11396 | default: | |
11397 | break; | |
11398 | } | |
11399 | output_addr_const (asm_out_file, x); | |
11400 | break; | |
11401 | ||
cf670503 ZC |
11402 | case 'k': |
11403 | { | |
c8012fbc | 11404 | HOST_WIDE_INT cond_code; |
cf670503 | 11405 | |
c8012fbc | 11406 | if (!CONST_INT_P (x)) |
cf670503 ZC |
11407 | { |
11408 | output_operand_lossage ("invalid operand for '%%%c'", code); | |
11409 | return; | |
11410 | } | |
11411 | ||
c8012fbc WD |
11412 | cond_code = INTVAL (x); |
11413 | gcc_assert (cond_code >= 0 && cond_code <= AARCH64_NV); | |
11414 | asm_fprintf (f, "%d", aarch64_nzcv_codes[cond_code]); | |
cf670503 ZC |
11415 | } |
11416 | break; | |
11417 | ||
e69a816d WD |
11418 | case 'y': |
11419 | case 'z': | |
11420 | { | |
11421 | machine_mode mode = GET_MODE (x); | |
11422 | ||
3793ecc1 | 11423 | if (!MEM_P (x) |
6a70badb | 11424 | || (code == 'y' && maybe_ne (GET_MODE_SIZE (mode), 16))) |
e69a816d WD |
11425 | { |
11426 | output_operand_lossage ("invalid operand for '%%%c'", code); | |
11427 | return; | |
11428 | } | |
11429 | ||
a25831ac AV |
11430 | if (!aarch64_print_address_internal (f, mode, XEXP (x, 0), |
11431 | code == 'y' | |
11432 | ? ADDR_QUERY_LDP_STP_N | |
11433 | : ADDR_QUERY_LDP_STP)) | |
c348cab0 | 11434 | output_operand_lossage ("invalid operand prefix '%%%c'", code); |
e69a816d WD |
11435 | } |
11436 | break; | |
11437 | ||
43e9d192 IB |
11438 | default: |
11439 | output_operand_lossage ("invalid operand prefix '%%%c'", code); | |
11440 | return; | |
11441 | } | |
11442 | } | |
11443 | ||
e69a816d WD |
11444 | /* Print address 'x' of a memory access with mode 'mode'. |
11445 | 'op' is the context required by aarch64_classify_address. It can either be | |
11446 | MEM for a normal memory access or PARALLEL for LDP/STP. */ | |
c348cab0 | 11447 | static bool |
a97d8b98 RS |
11448 | aarch64_print_address_internal (FILE *f, machine_mode mode, rtx x, |
11449 | aarch64_addr_query_type type) | |
43e9d192 IB |
11450 | { |
11451 | struct aarch64_address_info addr; | |
550a3380 | 11452 | unsigned int size, vec_flags; |
43e9d192 | 11453 | |
e69a816d | 11454 | /* Check all addresses are Pmode - including ILP32. */ |
31460ed2 JJ |
11455 | if (GET_MODE (x) != Pmode |
11456 | && (!CONST_INT_P (x) | |
11457 | || trunc_int_for_mode (INTVAL (x), Pmode) != INTVAL (x))) | |
11458 | { | |
11459 | output_operand_lossage ("invalid address mode"); | |
11460 | return false; | |
11461 | } | |
e69a816d | 11462 | |
a97d8b98 | 11463 | if (aarch64_classify_address (&addr, x, mode, true, type)) |
43e9d192 IB |
11464 | switch (addr.type) |
11465 | { | |
11466 | case ADDRESS_REG_IMM: | |
dc640181 | 11467 | if (known_eq (addr.const_offset, 0)) |
43cacb12 | 11468 | { |
550a3380 RS |
11469 | asm_fprintf (f, "[%s]", reg_names[REGNO (addr.base)]); |
11470 | return true; | |
43cacb12 | 11471 | } |
550a3380 RS |
11472 | |
11473 | vec_flags = aarch64_classify_vector_mode (mode); | |
11474 | if (vec_flags & VEC_ANY_SVE) | |
43cacb12 RS |
11475 | { |
11476 | HOST_WIDE_INT vnum | |
11477 | = exact_div (addr.const_offset, | |
550a3380 | 11478 | aarch64_vl_bytes (mode, vec_flags)).to_constant (); |
43cacb12 RS |
11479 | asm_fprintf (f, "[%s, #%wd, mul vl]", |
11480 | reg_names[REGNO (addr.base)], vnum); | |
550a3380 | 11481 | return true; |
43cacb12 | 11482 | } |
550a3380 RS |
11483 | |
11484 | asm_fprintf (f, "[%s, %wd]", reg_names[REGNO (addr.base)], | |
11485 | INTVAL (addr.offset)); | |
c348cab0 | 11486 | return true; |
43e9d192 IB |
11487 | |
11488 | case ADDRESS_REG_REG: | |
11489 | if (addr.shift == 0) | |
16a3246f | 11490 | asm_fprintf (f, "[%s, %s]", reg_names [REGNO (addr.base)], |
01a3a324 | 11491 | reg_names [REGNO (addr.offset)]); |
43e9d192 | 11492 | else |
16a3246f | 11493 | asm_fprintf (f, "[%s, %s, lsl %u]", reg_names [REGNO (addr.base)], |
01a3a324 | 11494 | reg_names [REGNO (addr.offset)], addr.shift); |
c348cab0 | 11495 | return true; |
43e9d192 IB |
11496 | |
11497 | case ADDRESS_REG_UXTW: | |
11498 | if (addr.shift == 0) | |
16a3246f | 11499 | asm_fprintf (f, "[%s, w%d, uxtw]", reg_names [REGNO (addr.base)], |
43e9d192 IB |
11500 | REGNO (addr.offset) - R0_REGNUM); |
11501 | else | |
16a3246f | 11502 | asm_fprintf (f, "[%s, w%d, uxtw %u]", reg_names [REGNO (addr.base)], |
43e9d192 | 11503 | REGNO (addr.offset) - R0_REGNUM, addr.shift); |
c348cab0 | 11504 | return true; |
43e9d192 IB |
11505 | |
11506 | case ADDRESS_REG_SXTW: | |
11507 | if (addr.shift == 0) | |
16a3246f | 11508 | asm_fprintf (f, "[%s, w%d, sxtw]", reg_names [REGNO (addr.base)], |
43e9d192 IB |
11509 | REGNO (addr.offset) - R0_REGNUM); |
11510 | else | |
16a3246f | 11511 | asm_fprintf (f, "[%s, w%d, sxtw %u]", reg_names [REGNO (addr.base)], |
43e9d192 | 11512 | REGNO (addr.offset) - R0_REGNUM, addr.shift); |
c348cab0 | 11513 | return true; |
43e9d192 IB |
11514 | |
11515 | case ADDRESS_REG_WB: | |
6a70badb RS |
11516 | /* Writeback is only supported for fixed-width modes. */ |
11517 | size = GET_MODE_SIZE (mode).to_constant (); | |
43e9d192 IB |
11518 | switch (GET_CODE (x)) |
11519 | { | |
11520 | case PRE_INC: | |
6a70badb | 11521 | asm_fprintf (f, "[%s, %d]!", reg_names [REGNO (addr.base)], size); |
c348cab0 | 11522 | return true; |
43e9d192 | 11523 | case POST_INC: |
6a70badb | 11524 | asm_fprintf (f, "[%s], %d", reg_names [REGNO (addr.base)], size); |
c348cab0 | 11525 | return true; |
43e9d192 | 11526 | case PRE_DEC: |
6a70badb | 11527 | asm_fprintf (f, "[%s, -%d]!", reg_names [REGNO (addr.base)], size); |
c348cab0 | 11528 | return true; |
43e9d192 | 11529 | case POST_DEC: |
6a70badb | 11530 | asm_fprintf (f, "[%s], -%d", reg_names [REGNO (addr.base)], size); |
c348cab0 | 11531 | return true; |
43e9d192 | 11532 | case PRE_MODIFY: |
6a70badb | 11533 | asm_fprintf (f, "[%s, %wd]!", reg_names[REGNO (addr.base)], |
43e9d192 | 11534 | INTVAL (addr.offset)); |
c348cab0 | 11535 | return true; |
43e9d192 | 11536 | case POST_MODIFY: |
6a70badb | 11537 | asm_fprintf (f, "[%s], %wd", reg_names[REGNO (addr.base)], |
43e9d192 | 11538 | INTVAL (addr.offset)); |
c348cab0 | 11539 | return true; |
43e9d192 IB |
11540 | default: |
11541 | break; | |
11542 | } | |
11543 | break; | |
11544 | ||
11545 | case ADDRESS_LO_SUM: | |
16a3246f | 11546 | asm_fprintf (f, "[%s, #:lo12:", reg_names [REGNO (addr.base)]); |
43e9d192 IB |
11547 | output_addr_const (f, addr.offset); |
11548 | asm_fprintf (f, "]"); | |
c348cab0 | 11549 | return true; |
43e9d192 IB |
11550 | |
11551 | case ADDRESS_SYMBOLIC: | |
d6591257 | 11552 | output_addr_const (f, x); |
c348cab0 | 11553 | return true; |
43e9d192 IB |
11554 | } |
11555 | ||
c348cab0 | 11556 | return false; |
43e9d192 IB |
11557 | } |
11558 | ||
e69a816d WD |
11559 | /* Print address 'x' of a memory access with mode 'mode'. */ |
11560 | static void | |
11561 | aarch64_print_operand_address (FILE *f, machine_mode mode, rtx x) | |
11562 | { | |
43cacb12 | 11563 | if (!aarch64_print_address_internal (f, mode, x, ADDR_QUERY_ANY)) |
c348cab0 | 11564 | output_addr_const (f, x); |
e69a816d WD |
11565 | } |
11566 | ||
74b27d8e RS |
11567 | /* Implement TARGET_ASM_OUTPUT_ADDR_CONST_EXTRA. */ |
11568 | ||
11569 | static bool | |
11570 | aarch64_output_addr_const_extra (FILE *file, rtx x) | |
11571 | { | |
11572 | if (GET_CODE (x) == UNSPEC && XINT (x, 1) == UNSPEC_SALT_ADDR) | |
11573 | { | |
11574 | output_addr_const (file, XVECEXP (x, 0, 0)); | |
11575 | return true; | |
11576 | } | |
11577 | return false; | |
11578 | } | |
11579 | ||
43e9d192 IB |
11580 | bool |
11581 | aarch64_label_mentioned_p (rtx x) | |
11582 | { | |
11583 | const char *fmt; | |
11584 | int i; | |
11585 | ||
3793ecc1 | 11586 | if (LABEL_REF_P (x)) |
43e9d192 IB |
11587 | return true; |
11588 | ||
11589 | /* UNSPEC_TLS entries for a symbol include a LABEL_REF for the | |
11590 | referencing instruction, but they are constant offsets, not | |
11591 | symbols. */ | |
11592 | if (GET_CODE (x) == UNSPEC && XINT (x, 1) == UNSPEC_TLS) | |
11593 | return false; | |
11594 | ||
11595 | fmt = GET_RTX_FORMAT (GET_CODE (x)); | |
11596 | for (i = GET_RTX_LENGTH (GET_CODE (x)) - 1; i >= 0; i--) | |
11597 | { | |
11598 | if (fmt[i] == 'E') | |
11599 | { | |
11600 | int j; | |
11601 | ||
11602 | for (j = XVECLEN (x, i) - 1; j >= 0; j--) | |
11603 | if (aarch64_label_mentioned_p (XVECEXP (x, i, j))) | |
11604 | return 1; | |
11605 | } | |
11606 | else if (fmt[i] == 'e' && aarch64_label_mentioned_p (XEXP (x, i))) | |
11607 | return 1; | |
11608 | } | |
11609 | ||
11610 | return 0; | |
11611 | } | |
11612 | ||
11613 | /* Implement REGNO_REG_CLASS. */ | |
11614 | ||
11615 | enum reg_class | |
11616 | aarch64_regno_regclass (unsigned regno) | |
11617 | { | |
96b7f495 MM |
11618 | if (STUB_REGNUM_P (regno)) |
11619 | return STUB_REGS; | |
11620 | ||
43e9d192 | 11621 | if (GP_REGNUM_P (regno)) |
a4a182c6 | 11622 | return GENERAL_REGS; |
43e9d192 IB |
11623 | |
11624 | if (regno == SP_REGNUM) | |
11625 | return STACK_REG; | |
11626 | ||
11627 | if (regno == FRAME_POINTER_REGNUM | |
11628 | || regno == ARG_POINTER_REGNUM) | |
f24bb080 | 11629 | return POINTER_REGS; |
43e9d192 IB |
11630 | |
11631 | if (FP_REGNUM_P (regno)) | |
163b1f6a RS |
11632 | return (FP_LO8_REGNUM_P (regno) ? FP_LO8_REGS |
11633 | : FP_LO_REGNUM_P (regno) ? FP_LO_REGS : FP_REGS); | |
43e9d192 | 11634 | |
43cacb12 RS |
11635 | if (PR_REGNUM_P (regno)) |
11636 | return PR_LO_REGNUM_P (regno) ? PR_LO_REGS : PR_HI_REGS; | |
11637 | ||
183bfdaf RS |
11638 | if (regno == FFR_REGNUM || regno == FFRT_REGNUM) |
11639 | return FFR_REGS; | |
11640 | ||
43e9d192 IB |
11641 | return NO_REGS; |
11642 | } | |
11643 | ||
6a70badb RS |
11644 | /* OFFSET is an address offset for mode MODE, which has SIZE bytes. |
11645 | If OFFSET is out of range, return an offset of an anchor point | |
11646 | that is in range. Return 0 otherwise. */ | |
11647 | ||
11648 | static HOST_WIDE_INT | |
11649 | aarch64_anchor_offset (HOST_WIDE_INT offset, HOST_WIDE_INT size, | |
11650 | machine_mode mode) | |
11651 | { | |
11652 | /* Does it look like we'll need a 16-byte load/store-pair operation? */ | |
11653 | if (size > 16) | |
11654 | return (offset + 0x400) & ~0x7f0; | |
11655 | ||
11656 | /* For offsets that aren't a multiple of the access size, the limit is | |
11657 | -256...255. */ | |
11658 | if (offset & (size - 1)) | |
11659 | { | |
11660 | /* BLKmode typically uses LDP of X-registers. */ | |
11661 | if (mode == BLKmode) | |
11662 | return (offset + 512) & ~0x3ff; | |
11663 | return (offset + 0x100) & ~0x1ff; | |
11664 | } | |
11665 | ||
11666 | /* Small negative offsets are supported. */ | |
11667 | if (IN_RANGE (offset, -256, 0)) | |
11668 | return 0; | |
11669 | ||
11670 | if (mode == TImode || mode == TFmode) | |
11671 | return (offset + 0x100) & ~0x1ff; | |
11672 | ||
11673 | /* Use 12-bit offset by access size. */ | |
11674 | return offset & (~0xfff * size); | |
11675 | } | |
11676 | ||
0c4ec427 | 11677 | static rtx |
ef4bddc2 | 11678 | aarch64_legitimize_address (rtx x, rtx /* orig_x */, machine_mode mode) |
0c4ec427 RE |
11679 | { |
11680 | /* Try to split X+CONST into Y=X+(CONST & ~mask), Y+(CONST&mask), | |
11681 | where mask is selected by alignment and size of the offset. | |
11682 | We try to pick as large a range for the offset as possible to | |
11683 | maximize the chance of a CSE. However, for aligned addresses | |
11684 | we limit the range to 4k so that structures with different sized | |
e8426e0a BC |
11685 | elements are likely to use the same base. We need to be careful |
11686 | not to split a CONST for some forms of address expression, otherwise | |
11687 | it will generate sub-optimal code. */ | |
0c4ec427 RE |
11688 | |
11689 | if (GET_CODE (x) == PLUS && CONST_INT_P (XEXP (x, 1))) | |
11690 | { | |
9e0218fc | 11691 | rtx base = XEXP (x, 0); |
17d7bdd8 | 11692 | rtx offset_rtx = XEXP (x, 1); |
9e0218fc | 11693 | HOST_WIDE_INT offset = INTVAL (offset_rtx); |
0c4ec427 | 11694 | |
9e0218fc | 11695 | if (GET_CODE (base) == PLUS) |
e8426e0a | 11696 | { |
9e0218fc RH |
11697 | rtx op0 = XEXP (base, 0); |
11698 | rtx op1 = XEXP (base, 1); | |
11699 | ||
11700 | /* Force any scaling into a temp for CSE. */ | |
11701 | op0 = force_reg (Pmode, op0); | |
11702 | op1 = force_reg (Pmode, op1); | |
11703 | ||
11704 | /* Let the pointer register be in op0. */ | |
11705 | if (REG_POINTER (op1)) | |
11706 | std::swap (op0, op1); | |
11707 | ||
11708 | /* If the pointer is virtual or frame related, then we know that | |
11709 | virtual register instantiation or register elimination is going | |
11710 | to apply a second constant. We want the two constants folded | |
11711 | together easily. Therefore, emit as (OP0 + CONST) + OP1. */ | |
11712 | if (virt_or_elim_regno_p (REGNO (op0))) | |
e8426e0a | 11713 | { |
9e0218fc RH |
11714 | base = expand_binop (Pmode, add_optab, op0, offset_rtx, |
11715 | NULL_RTX, true, OPTAB_DIRECT); | |
11716 | return gen_rtx_PLUS (Pmode, base, op1); | |
e8426e0a | 11717 | } |
e8426e0a | 11718 | |
9e0218fc RH |
11719 | /* Otherwise, in order to encourage CSE (and thence loop strength |
11720 | reduce) scaled addresses, emit as (OP0 + OP1) + CONST. */ | |
11721 | base = expand_binop (Pmode, add_optab, op0, op1, | |
11722 | NULL_RTX, true, OPTAB_DIRECT); | |
11723 | x = gen_rtx_PLUS (Pmode, base, offset_rtx); | |
e8426e0a BC |
11724 | } |
11725 | ||
6a70badb RS |
11726 | HOST_WIDE_INT size; |
11727 | if (GET_MODE_SIZE (mode).is_constant (&size)) | |
ff0f3f1c | 11728 | { |
6a70badb RS |
11729 | HOST_WIDE_INT base_offset = aarch64_anchor_offset (offset, size, |
11730 | mode); | |
11731 | if (base_offset != 0) | |
11732 | { | |
11733 | base = plus_constant (Pmode, base, base_offset); | |
11734 | base = force_operand (base, NULL_RTX); | |
11735 | return plus_constant (Pmode, base, offset - base_offset); | |
11736 | } | |
9e0218fc | 11737 | } |
0c4ec427 RE |
11738 | } |
11739 | ||
11740 | return x; | |
11741 | } | |
11742 | ||
43e9d192 IB |
11743 | static reg_class_t |
11744 | aarch64_secondary_reload (bool in_p ATTRIBUTE_UNUSED, rtx x, | |
11745 | reg_class_t rclass, | |
ef4bddc2 | 11746 | machine_mode mode, |
43e9d192 IB |
11747 | secondary_reload_info *sri) |
11748 | { | |
cc68f7c2 RS |
11749 | /* Use aarch64_sve_reload_mem for SVE memory reloads that cannot use |
11750 | LDR and STR. See the comment at the head of aarch64-sve.md for | |
11751 | more details about the big-endian handling. */ | |
11752 | if (reg_class_subset_p (rclass, FP_REGS) | |
9a1b9cb4 RS |
11753 | && !((REG_P (x) && HARD_REGISTER_P (x)) |
11754 | || aarch64_simd_valid_immediate (x, NULL)) | |
cc68f7c2 | 11755 | && mode != VNx16QImode) |
43cacb12 | 11756 | { |
cc68f7c2 RS |
11757 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); |
11758 | if ((vec_flags & VEC_SVE_DATA) | |
11759 | && ((vec_flags & VEC_PARTIAL) || BYTES_BIG_ENDIAN)) | |
11760 | { | |
11761 | sri->icode = CODE_FOR_aarch64_sve_reload_mem; | |
11762 | return NO_REGS; | |
11763 | } | |
43cacb12 | 11764 | } |
b4f50fd4 RR |
11765 | |
11766 | /* If we have to disable direct literal pool loads and stores because the | |
11767 | function is too big, then we need a scratch register. */ | |
3793ecc1 | 11768 | if (MEM_P (x) && SYMBOL_REF_P (x) && CONSTANT_POOL_ADDRESS_P (x) |
b4f50fd4 RR |
11769 | && (SCALAR_FLOAT_MODE_P (GET_MODE (x)) |
11770 | || targetm.vector_mode_supported_p (GET_MODE (x))) | |
9ee6540a | 11771 | && !aarch64_pcrelative_literal_loads) |
b4f50fd4 | 11772 | { |
0016d8d9 | 11773 | sri->icode = code_for_aarch64_reload_movcp (mode, DImode); |
b4f50fd4 RR |
11774 | return NO_REGS; |
11775 | } | |
11776 | ||
43e9d192 IB |
11777 | /* Without the TARGET_SIMD instructions we cannot move a Q register |
11778 | to a Q register directly. We need a scratch. */ | |
11779 | if (REG_P (x) && (mode == TFmode || mode == TImode) && mode == GET_MODE (x) | |
11780 | && FP_REGNUM_P (REGNO (x)) && !TARGET_SIMD | |
11781 | && reg_class_subset_p (rclass, FP_REGS)) | |
11782 | { | |
0016d8d9 | 11783 | sri->icode = code_for_aarch64_reload_mov (mode); |
43e9d192 IB |
11784 | return NO_REGS; |
11785 | } | |
11786 | ||
11787 | /* A TFmode or TImode memory access should be handled via an FP_REGS | |
11788 | because AArch64 has richer addressing modes for LDR/STR instructions | |
11789 | than LDP/STP instructions. */ | |
d5726973 | 11790 | if (TARGET_FLOAT && rclass == GENERAL_REGS |
6a70badb | 11791 | && known_eq (GET_MODE_SIZE (mode), 16) && MEM_P (x)) |
43e9d192 IB |
11792 | return FP_REGS; |
11793 | ||
11794 | if (rclass == FP_REGS && (mode == TImode || mode == TFmode) && CONSTANT_P(x)) | |
a4a182c6 | 11795 | return GENERAL_REGS; |
43e9d192 IB |
11796 | |
11797 | return NO_REGS; | |
11798 | } | |
11799 | ||
11800 | static bool | |
6216fd90 | 11801 | aarch64_can_eliminate (const int from ATTRIBUTE_UNUSED, const int to) |
43e9d192 | 11802 | { |
6216fd90 | 11803 | gcc_assert (from == ARG_POINTER_REGNUM || from == FRAME_POINTER_REGNUM); |
43e9d192 | 11804 | |
6216fd90 WD |
11805 | /* If we need a frame pointer, ARG_POINTER_REGNUM and FRAME_POINTER_REGNUM |
11806 | can only eliminate to HARD_FRAME_POINTER_REGNUM. */ | |
43e9d192 | 11807 | if (frame_pointer_needed) |
6216fd90 | 11808 | return to == HARD_FRAME_POINTER_REGNUM; |
43e9d192 IB |
11809 | return true; |
11810 | } | |
11811 | ||
6a70badb | 11812 | poly_int64 |
43e9d192 IB |
11813 | aarch64_initial_elimination_offset (unsigned from, unsigned to) |
11814 | { | |
78c29983 MS |
11815 | if (to == HARD_FRAME_POINTER_REGNUM) |
11816 | { | |
11817 | if (from == ARG_POINTER_REGNUM) | |
71bfb77a | 11818 | return cfun->machine->frame.hard_fp_offset; |
78c29983 MS |
11819 | |
11820 | if (from == FRAME_POINTER_REGNUM) | |
71bfb77a WD |
11821 | return cfun->machine->frame.hard_fp_offset |
11822 | - cfun->machine->frame.locals_offset; | |
78c29983 MS |
11823 | } |
11824 | ||
11825 | if (to == STACK_POINTER_REGNUM) | |
11826 | { | |
11827 | if (from == FRAME_POINTER_REGNUM) | |
71bfb77a WD |
11828 | return cfun->machine->frame.frame_size |
11829 | - cfun->machine->frame.locals_offset; | |
78c29983 MS |
11830 | } |
11831 | ||
1c960e02 | 11832 | return cfun->machine->frame.frame_size; |
43e9d192 IB |
11833 | } |
11834 | ||
463a54e5 SN |
11835 | |
11836 | /* Get return address without mangling. */ | |
11837 | ||
11838 | rtx | |
11839 | aarch64_return_addr_rtx (void) | |
11840 | { | |
11841 | rtx val = get_hard_reg_initial_val (Pmode, LR_REGNUM); | |
11842 | /* Note: aarch64_return_address_signing_enabled only | |
11843 | works after cfun->machine->frame.laid_out is set, | |
11844 | so here we don't know if the return address will | |
11845 | be signed or not. */ | |
11846 | rtx lr = gen_rtx_REG (Pmode, LR_REGNUM); | |
11847 | emit_move_insn (lr, val); | |
11848 | emit_insn (GEN_FCN (CODE_FOR_xpaclri) ()); | |
11849 | return lr; | |
11850 | } | |
11851 | ||
11852 | ||
43e9d192 IB |
11853 | /* Implement RETURN_ADDR_RTX. We do not support moving back to a |
11854 | previous frame. */ | |
11855 | ||
11856 | rtx | |
11857 | aarch64_return_addr (int count, rtx frame ATTRIBUTE_UNUSED) | |
11858 | { | |
11859 | if (count != 0) | |
11860 | return const0_rtx; | |
463a54e5 | 11861 | return aarch64_return_addr_rtx (); |
43e9d192 IB |
11862 | } |
11863 | ||
43e9d192 IB |
11864 | static void |
11865 | aarch64_asm_trampoline_template (FILE *f) | |
11866 | { | |
be7c41a5 OT |
11867 | /* Even if the current function doesn't have branch protection, some |
11868 | later function might, so since this template is only generated once | |
11869 | we have to add a BTI just in case. */ | |
11870 | asm_fprintf (f, "\thint\t34 // bti c\n"); | |
b5f794b4 | 11871 | |
28514dda YZ |
11872 | if (TARGET_ILP32) |
11873 | { | |
be178ecd MM |
11874 | asm_fprintf (f, "\tldr\tw%d, .+20\n", IP1_REGNUM - R0_REGNUM); |
11875 | asm_fprintf (f, "\tldr\tw%d, .+20\n", STATIC_CHAIN_REGNUM - R0_REGNUM); | |
28514dda YZ |
11876 | } |
11877 | else | |
11878 | { | |
be178ecd MM |
11879 | asm_fprintf (f, "\tldr\t%s, .+20\n", reg_names [IP1_REGNUM]); |
11880 | asm_fprintf (f, "\tldr\t%s, .+24\n", reg_names [STATIC_CHAIN_REGNUM]); | |
28514dda | 11881 | } |
01a3a324 | 11882 | asm_fprintf (f, "\tbr\t%s\n", reg_names [IP1_REGNUM]); |
b5f794b4 | 11883 | |
be178ecd MM |
11884 | /* We always emit a speculation barrier. |
11885 | This is because the same trampoline template is used for every nested | |
11886 | function. Since nested functions are not particularly common or | |
11887 | performant we don't worry too much about the extra instructions to copy | |
11888 | around. | |
11889 | This is not yet a problem, since we have not yet implemented function | |
11890 | specific attributes to choose between hardening against straight line | |
11891 | speculation or not, but such function specific attributes are likely to | |
11892 | happen in the future. */ | |
11893 | asm_fprintf (f, "\tdsb\tsy\n\tisb\n"); | |
11894 | ||
28514dda YZ |
11895 | assemble_aligned_integer (POINTER_BYTES, const0_rtx); |
11896 | assemble_aligned_integer (POINTER_BYTES, const0_rtx); | |
43e9d192 IB |
11897 | } |
11898 | ||
11899 | static void | |
11900 | aarch64_trampoline_init (rtx m_tramp, tree fndecl, rtx chain_value) | |
11901 | { | |
11902 | rtx fnaddr, mem, a_tramp; | |
be178ecd | 11903 | const int tramp_code_sz = 24; |
43e9d192 IB |
11904 | |
11905 | /* Don't need to copy the trailing D-words, we fill those in below. */ | |
be178ecd MM |
11906 | /* We create our own memory address in Pmode so that `emit_block_move` can |
11907 | use parts of the backend which expect Pmode addresses. */ | |
11908 | rtx temp = convert_memory_address (Pmode, XEXP (m_tramp, 0)); | |
11909 | emit_block_move (gen_rtx_MEM (BLKmode, temp), | |
11910 | assemble_trampoline_template (), | |
28514dda YZ |
11911 | GEN_INT (tramp_code_sz), BLOCK_OP_NORMAL); |
11912 | mem = adjust_address (m_tramp, ptr_mode, tramp_code_sz); | |
43e9d192 | 11913 | fnaddr = XEXP (DECL_RTL (fndecl), 0); |
28514dda YZ |
11914 | if (GET_MODE (fnaddr) != ptr_mode) |
11915 | fnaddr = convert_memory_address (ptr_mode, fnaddr); | |
43e9d192 IB |
11916 | emit_move_insn (mem, fnaddr); |
11917 | ||
28514dda | 11918 | mem = adjust_address (m_tramp, ptr_mode, tramp_code_sz + POINTER_BYTES); |
43e9d192 IB |
11919 | emit_move_insn (mem, chain_value); |
11920 | ||
11921 | /* XXX We should really define a "clear_cache" pattern and use | |
11922 | gen_clear_cache(). */ | |
11923 | a_tramp = XEXP (m_tramp, 0); | |
c05ece92 AO |
11924 | maybe_emit_call_builtin___clear_cache (a_tramp, |
11925 | plus_constant (ptr_mode, | |
11926 | a_tramp, | |
11927 | TRAMPOLINE_SIZE)); | |
43e9d192 IB |
11928 | } |
11929 | ||
11930 | static unsigned char | |
ef4bddc2 | 11931 | aarch64_class_max_nregs (reg_class_t regclass, machine_mode mode) |
43e9d192 | 11932 | { |
6a70badb RS |
11933 | /* ??? Logically we should only need to provide a value when |
11934 | HARD_REGNO_MODE_OK says that at least one register in REGCLASS | |
11935 | can hold MODE, but at the moment we need to handle all modes. | |
11936 | Just ignore any runtime parts for registers that can't store them. */ | |
11937 | HOST_WIDE_INT lowest_size = constant_lower_bound (GET_MODE_SIZE (mode)); | |
550a3380 | 11938 | unsigned int nregs, vec_flags; |
43e9d192 IB |
11939 | switch (regclass) |
11940 | { | |
96b7f495 | 11941 | case STUB_REGS: |
d677263e | 11942 | case TAILCALL_ADDR_REGS: |
43e9d192 IB |
11943 | case POINTER_REGS: |
11944 | case GENERAL_REGS: | |
11945 | case ALL_REGS: | |
f25a140b | 11946 | case POINTER_AND_FP_REGS: |
43e9d192 IB |
11947 | case FP_REGS: |
11948 | case FP_LO_REGS: | |
163b1f6a | 11949 | case FP_LO8_REGS: |
550a3380 RS |
11950 | vec_flags = aarch64_classify_vector_mode (mode); |
11951 | if ((vec_flags & VEC_SVE_DATA) | |
43cacb12 | 11952 | && constant_multiple_p (GET_MODE_SIZE (mode), |
550a3380 | 11953 | aarch64_vl_bytes (mode, vec_flags), &nregs)) |
43cacb12 | 11954 | return nregs; |
550a3380 | 11955 | return (vec_flags & VEC_ADVSIMD |
6a70badb RS |
11956 | ? CEIL (lowest_size, UNITS_PER_VREG) |
11957 | : CEIL (lowest_size, UNITS_PER_WORD)); | |
43e9d192 | 11958 | case STACK_REG: |
43cacb12 RS |
11959 | case PR_REGS: |
11960 | case PR_LO_REGS: | |
11961 | case PR_HI_REGS: | |
183bfdaf RS |
11962 | case FFR_REGS: |
11963 | case PR_AND_FFR_REGS: | |
43e9d192 IB |
11964 | return 1; |
11965 | ||
11966 | case NO_REGS: | |
11967 | return 0; | |
11968 | ||
11969 | default: | |
11970 | break; | |
11971 | } | |
11972 | gcc_unreachable (); | |
11973 | } | |
11974 | ||
11975 | static reg_class_t | |
78d8b9f0 | 11976 | aarch64_preferred_reload_class (rtx x, reg_class_t regclass) |
43e9d192 | 11977 | { |
51bb310d | 11978 | if (regclass == POINTER_REGS) |
78d8b9f0 IB |
11979 | return GENERAL_REGS; |
11980 | ||
51bb310d MS |
11981 | if (regclass == STACK_REG) |
11982 | { | |
11983 | if (REG_P(x) | |
11984 | && reg_class_subset_p (REGNO_REG_CLASS (REGNO (x)), POINTER_REGS)) | |
11985 | return regclass; | |
11986 | ||
11987 | return NO_REGS; | |
11988 | } | |
11989 | ||
27bd251b IB |
11990 | /* Register eliminiation can result in a request for |
11991 | SP+constant->FP_REGS. We cannot support such operations which | |
11992 | use SP as source and an FP_REG as destination, so reject out | |
11993 | right now. */ | |
11994 | if (! reg_class_subset_p (regclass, GENERAL_REGS) && GET_CODE (x) == PLUS) | |
11995 | { | |
11996 | rtx lhs = XEXP (x, 0); | |
11997 | ||
11998 | /* Look through a possible SUBREG introduced by ILP32. */ | |
3793ecc1 | 11999 | if (SUBREG_P (lhs)) |
27bd251b IB |
12000 | lhs = SUBREG_REG (lhs); |
12001 | ||
12002 | gcc_assert (REG_P (lhs)); | |
12003 | gcc_assert (reg_class_subset_p (REGNO_REG_CLASS (REGNO (lhs)), | |
12004 | POINTER_REGS)); | |
12005 | return NO_REGS; | |
12006 | } | |
12007 | ||
78d8b9f0 | 12008 | return regclass; |
43e9d192 IB |
12009 | } |
12010 | ||
12011 | void | |
12012 | aarch64_asm_output_labelref (FILE* f, const char *name) | |
12013 | { | |
12014 | asm_fprintf (f, "%U%s", name); | |
12015 | } | |
12016 | ||
12017 | static void | |
12018 | aarch64_elf_asm_constructor (rtx symbol, int priority) | |
12019 | { | |
12020 | if (priority == DEFAULT_INIT_PRIORITY) | |
12021 | default_ctor_section_asm_out_constructor (symbol, priority); | |
12022 | else | |
12023 | { | |
12024 | section *s; | |
53d190c1 AT |
12025 | /* While priority is known to be in range [0, 65535], so 18 bytes |
12026 | would be enough, the compiler might not know that. To avoid | |
12027 | -Wformat-truncation false positive, use a larger size. */ | |
12028 | char buf[23]; | |
43e9d192 | 12029 | snprintf (buf, sizeof (buf), ".init_array.%.5u", priority); |
fcef3abd | 12030 | s = get_section (buf, SECTION_WRITE | SECTION_NOTYPE, NULL); |
43e9d192 IB |
12031 | switch_to_section (s); |
12032 | assemble_align (POINTER_SIZE); | |
28514dda | 12033 | assemble_aligned_integer (POINTER_BYTES, symbol); |
43e9d192 IB |
12034 | } |
12035 | } | |
12036 | ||
12037 | static void | |
12038 | aarch64_elf_asm_destructor (rtx symbol, int priority) | |
12039 | { | |
12040 | if (priority == DEFAULT_INIT_PRIORITY) | |
12041 | default_dtor_section_asm_out_destructor (symbol, priority); | |
12042 | else | |
12043 | { | |
12044 | section *s; | |
53d190c1 AT |
12045 | /* While priority is known to be in range [0, 65535], so 18 bytes |
12046 | would be enough, the compiler might not know that. To avoid | |
12047 | -Wformat-truncation false positive, use a larger size. */ | |
12048 | char buf[23]; | |
43e9d192 | 12049 | snprintf (buf, sizeof (buf), ".fini_array.%.5u", priority); |
fcef3abd | 12050 | s = get_section (buf, SECTION_WRITE | SECTION_NOTYPE, NULL); |
43e9d192 IB |
12051 | switch_to_section (s); |
12052 | assemble_align (POINTER_SIZE); | |
28514dda | 12053 | assemble_aligned_integer (POINTER_BYTES, symbol); |
43e9d192 IB |
12054 | } |
12055 | } | |
12056 | ||
12057 | const char* | |
12058 | aarch64_output_casesi (rtx *operands) | |
12059 | { | |
12060 | char buf[100]; | |
12061 | char label[100]; | |
b32d5189 | 12062 | rtx diff_vec = PATTERN (NEXT_INSN (as_a <rtx_insn *> (operands[2]))); |
43e9d192 IB |
12063 | int index; |
12064 | static const char *const patterns[4][2] = | |
12065 | { | |
12066 | { | |
12067 | "ldrb\t%w3, [%0,%w1,uxtw]", | |
12068 | "add\t%3, %4, %w3, sxtb #2" | |
12069 | }, | |
12070 | { | |
12071 | "ldrh\t%w3, [%0,%w1,uxtw #1]", | |
12072 | "add\t%3, %4, %w3, sxth #2" | |
12073 | }, | |
12074 | { | |
12075 | "ldr\t%w3, [%0,%w1,uxtw #2]", | |
12076 | "add\t%3, %4, %w3, sxtw #2" | |
12077 | }, | |
12078 | /* We assume that DImode is only generated when not optimizing and | |
12079 | that we don't really need 64-bit address offsets. That would | |
12080 | imply an object file with 8GB of code in a single function! */ | |
12081 | { | |
12082 | "ldr\t%w3, [%0,%w1,uxtw #2]", | |
12083 | "add\t%3, %4, %w3, sxtw #2" | |
12084 | } | |
12085 | }; | |
12086 | ||
12087 | gcc_assert (GET_CODE (diff_vec) == ADDR_DIFF_VEC); | |
12088 | ||
77e994c9 RS |
12089 | scalar_int_mode mode = as_a <scalar_int_mode> (GET_MODE (diff_vec)); |
12090 | index = exact_log2 (GET_MODE_SIZE (mode)); | |
43e9d192 IB |
12091 | |
12092 | gcc_assert (index >= 0 && index <= 3); | |
12093 | ||
12094 | /* Need to implement table size reduction, by chaning the code below. */ | |
12095 | output_asm_insn (patterns[index][0], operands); | |
12096 | ASM_GENERATE_INTERNAL_LABEL (label, "Lrtx", CODE_LABEL_NUMBER (operands[2])); | |
12097 | snprintf (buf, sizeof (buf), | |
12098 | "adr\t%%4, %s", targetm.strip_name_encoding (label)); | |
12099 | output_asm_insn (buf, operands); | |
12100 | output_asm_insn (patterns[index][1], operands); | |
12101 | output_asm_insn ("br\t%3", operands); | |
be178ecd MM |
12102 | output_asm_insn (aarch64_sls_barrier (aarch64_harden_sls_retbr_p ()), |
12103 | operands); | |
43e9d192 IB |
12104 | assemble_label (asm_out_file, label); |
12105 | return ""; | |
12106 | } | |
12107 | ||
12108 | ||
12109 | /* Return size in bits of an arithmetic operand which is shifted/scaled and | |
12110 | masked such that it is suitable for a UXTB, UXTH, or UXTW extend | |
12111 | operator. */ | |
12112 | ||
12113 | int | |
12114 | aarch64_uxt_size (int shift, HOST_WIDE_INT mask) | |
12115 | { | |
12116 | if (shift >= 0 && shift <= 3) | |
12117 | { | |
12118 | int size; | |
12119 | for (size = 8; size <= 32; size *= 2) | |
12120 | { | |
12121 | HOST_WIDE_INT bits = ((HOST_WIDE_INT)1U << size) - 1; | |
12122 | if (mask == bits << shift) | |
12123 | return size; | |
12124 | } | |
12125 | } | |
12126 | return 0; | |
12127 | } | |
12128 | ||
e78d485e RR |
12129 | /* Constant pools are per function only when PC relative |
12130 | literal loads are true or we are in the large memory | |
12131 | model. */ | |
12132 | ||
12133 | static inline bool | |
12134 | aarch64_can_use_per_function_literal_pools_p (void) | |
12135 | { | |
9ee6540a | 12136 | return (aarch64_pcrelative_literal_loads |
e78d485e RR |
12137 | || aarch64_cmodel == AARCH64_CMODEL_LARGE); |
12138 | } | |
12139 | ||
43e9d192 | 12140 | static bool |
e78d485e | 12141 | aarch64_use_blocks_for_constant_p (machine_mode, const_rtx) |
43e9d192 | 12142 | { |
74a9301d VM |
12143 | /* We can't use blocks for constants when we're using a per-function |
12144 | constant pool. */ | |
12145 | return !aarch64_can_use_per_function_literal_pools_p (); | |
43e9d192 IB |
12146 | } |
12147 | ||
e78d485e RR |
12148 | /* Select appropriate section for constants depending |
12149 | on where we place literal pools. */ | |
12150 | ||
43e9d192 | 12151 | static section * |
e78d485e RR |
12152 | aarch64_select_rtx_section (machine_mode mode, |
12153 | rtx x, | |
12154 | unsigned HOST_WIDE_INT align) | |
43e9d192 | 12155 | { |
e78d485e RR |
12156 | if (aarch64_can_use_per_function_literal_pools_p ()) |
12157 | return function_section (current_function_decl); | |
43e9d192 | 12158 | |
e78d485e RR |
12159 | return default_elf_select_rtx_section (mode, x, align); |
12160 | } | |
43e9d192 | 12161 | |
5fca7b66 RH |
12162 | /* Implement ASM_OUTPUT_POOL_EPILOGUE. */ |
12163 | void | |
12164 | aarch64_asm_output_pool_epilogue (FILE *f, const char *, tree, | |
12165 | HOST_WIDE_INT offset) | |
12166 | { | |
12167 | /* When using per-function literal pools, we must ensure that any code | |
12168 | section is aligned to the minimal instruction length, lest we get | |
12169 | errors from the assembler re "unaligned instructions". */ | |
12170 | if ((offset & 3) && aarch64_can_use_per_function_literal_pools_p ()) | |
12171 | ASM_OUTPUT_ALIGN (f, 2); | |
12172 | } | |
12173 | ||
43e9d192 IB |
12174 | /* Costs. */ |
12175 | ||
12176 | /* Helper function for rtx cost calculation. Strip a shift expression | |
12177 | from X. Returns the inner operand if successful, or the original | |
12178 | expression on failure. */ | |
12179 | static rtx | |
12180 | aarch64_strip_shift (rtx x) | |
12181 | { | |
12182 | rtx op = x; | |
12183 | ||
57b77d46 RE |
12184 | /* We accept both ROTATERT and ROTATE: since the RHS must be a constant |
12185 | we can convert both to ROR during final output. */ | |
43e9d192 IB |
12186 | if ((GET_CODE (op) == ASHIFT |
12187 | || GET_CODE (op) == ASHIFTRT | |
57b77d46 RE |
12188 | || GET_CODE (op) == LSHIFTRT |
12189 | || GET_CODE (op) == ROTATERT | |
12190 | || GET_CODE (op) == ROTATE) | |
43e9d192 IB |
12191 | && CONST_INT_P (XEXP (op, 1))) |
12192 | return XEXP (op, 0); | |
12193 | ||
12194 | if (GET_CODE (op) == MULT | |
12195 | && CONST_INT_P (XEXP (op, 1)) | |
12196 | && ((unsigned) exact_log2 (INTVAL (XEXP (op, 1)))) < 64) | |
12197 | return XEXP (op, 0); | |
12198 | ||
12199 | return x; | |
12200 | } | |
12201 | ||
4745e701 | 12202 | /* Helper function for rtx cost calculation. Strip an extend |
43e9d192 IB |
12203 | expression from X. Returns the inner operand if successful, or the |
12204 | original expression on failure. We deal with a number of possible | |
b10f1009 AP |
12205 | canonicalization variations here. If STRIP_SHIFT is true, then |
12206 | we can strip off a shift also. */ | |
43e9d192 | 12207 | static rtx |
b10f1009 | 12208 | aarch64_strip_extend (rtx x, bool strip_shift) |
43e9d192 | 12209 | { |
77e994c9 | 12210 | scalar_int_mode mode; |
43e9d192 IB |
12211 | rtx op = x; |
12212 | ||
77e994c9 RS |
12213 | if (!is_a <scalar_int_mode> (GET_MODE (op), &mode)) |
12214 | return op; | |
12215 | ||
43e9d192 IB |
12216 | if (GET_CODE (op) == AND |
12217 | && GET_CODE (XEXP (op, 0)) == MULT | |
12218 | && CONST_INT_P (XEXP (XEXP (op, 0), 1)) | |
12219 | && CONST_INT_P (XEXP (op, 1)) | |
12220 | && aarch64_uxt_size (exact_log2 (INTVAL (XEXP (XEXP (op, 0), 1))), | |
12221 | INTVAL (XEXP (op, 1))) != 0) | |
12222 | return XEXP (XEXP (op, 0), 0); | |
12223 | ||
12224 | /* Now handle extended register, as this may also have an optional | |
12225 | left shift by 1..4. */ | |
b10f1009 AP |
12226 | if (strip_shift |
12227 | && GET_CODE (op) == ASHIFT | |
43e9d192 IB |
12228 | && CONST_INT_P (XEXP (op, 1)) |
12229 | && ((unsigned HOST_WIDE_INT) INTVAL (XEXP (op, 1))) <= 4) | |
12230 | op = XEXP (op, 0); | |
12231 | ||
12232 | if (GET_CODE (op) == ZERO_EXTEND | |
12233 | || GET_CODE (op) == SIGN_EXTEND) | |
12234 | op = XEXP (op, 0); | |
12235 | ||
12236 | if (op != x) | |
12237 | return op; | |
12238 | ||
4745e701 JG |
12239 | return x; |
12240 | } | |
12241 | ||
63834c84 JW |
12242 | /* Helper function for rtx cost calculation. Strip extension as well as any |
12243 | inner VEC_SELECT high-half from X. Returns the inner vector operand if | |
12244 | successful, or the original expression on failure. */ | |
12245 | static rtx | |
12246 | aarch64_strip_extend_vec_half (rtx x) | |
12247 | { | |
12248 | if (GET_CODE (x) == ZERO_EXTEND || GET_CODE (x) == SIGN_EXTEND) | |
12249 | { | |
12250 | x = XEXP (x, 0); | |
12251 | if (GET_CODE (x) == VEC_SELECT | |
12252 | && vec_series_highpart_p (GET_MODE (x), GET_MODE (XEXP (x, 0)), | |
12253 | XEXP (x, 1))) | |
12254 | x = XEXP (x, 0); | |
12255 | } | |
12256 | return x; | |
12257 | } | |
1d65c9d2 JW |
12258 | |
12259 | /* Helper function for rtx cost calculation. Strip VEC_DUPLICATE as well as | |
12260 | any subsequent extend and VEC_SELECT from X. Returns the inner scalar | |
12261 | operand if successful, or the original expression on failure. */ | |
12262 | static rtx | |
12263 | aarch64_strip_duplicate_vec_elt (rtx x) | |
12264 | { | |
12265 | if (GET_CODE (x) == VEC_DUPLICATE | |
12266 | && is_a<scalar_mode> (GET_MODE (XEXP (x, 0)))) | |
12267 | { | |
12268 | x = XEXP (x, 0); | |
12269 | if (GET_CODE (x) == VEC_SELECT) | |
12270 | x = XEXP (x, 0); | |
12271 | else if ((GET_CODE (x) == ZERO_EXTEND || GET_CODE (x) == SIGN_EXTEND) | |
12272 | && GET_CODE (XEXP (x, 0)) == VEC_SELECT) | |
12273 | x = XEXP (XEXP (x, 0), 0); | |
12274 | } | |
12275 | return x; | |
12276 | } | |
12277 | ||
0a78ebe4 KT |
12278 | /* Return true iff CODE is a shift supported in combination |
12279 | with arithmetic instructions. */ | |
4d1919ed | 12280 | |
0a78ebe4 KT |
12281 | static bool |
12282 | aarch64_shift_p (enum rtx_code code) | |
12283 | { | |
12284 | return code == ASHIFT || code == ASHIFTRT || code == LSHIFTRT; | |
12285 | } | |
12286 | ||
b10f1009 AP |
12287 | |
12288 | /* Return true iff X is a cheap shift without a sign extend. */ | |
12289 | ||
12290 | static bool | |
12291 | aarch64_cheap_mult_shift_p (rtx x) | |
12292 | { | |
12293 | rtx op0, op1; | |
12294 | ||
12295 | op0 = XEXP (x, 0); | |
12296 | op1 = XEXP (x, 1); | |
12297 | ||
12298 | if (!(aarch64_tune_params.extra_tuning_flags | |
12299 | & AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND)) | |
12300 | return false; | |
12301 | ||
12302 | if (GET_CODE (op0) == SIGN_EXTEND) | |
12303 | return false; | |
12304 | ||
12305 | if (GET_CODE (x) == ASHIFT && CONST_INT_P (op1) | |
12306 | && UINTVAL (op1) <= 4) | |
12307 | return true; | |
12308 | ||
12309 | if (GET_CODE (x) != MULT || !CONST_INT_P (op1)) | |
12310 | return false; | |
12311 | ||
12312 | HOST_WIDE_INT l2 = exact_log2 (INTVAL (op1)); | |
12313 | ||
12314 | if (l2 > 0 && l2 <= 4) | |
12315 | return true; | |
12316 | ||
12317 | return false; | |
12318 | } | |
12319 | ||
4745e701 | 12320 | /* Helper function for rtx cost calculation. Calculate the cost of |
0a78ebe4 KT |
12321 | a MULT or ASHIFT, which may be part of a compound PLUS/MINUS rtx. |
12322 | Return the calculated cost of the expression, recursing manually in to | |
4745e701 JG |
12323 | operands where needed. */ |
12324 | ||
12325 | static int | |
e548c9df | 12326 | aarch64_rtx_mult_cost (rtx x, enum rtx_code code, int outer, bool speed) |
4745e701 JG |
12327 | { |
12328 | rtx op0, op1; | |
12329 | const struct cpu_cost_table *extra_cost | |
b175b679 | 12330 | = aarch64_tune_params.insn_extra_cost; |
4745e701 | 12331 | int cost = 0; |
0a78ebe4 | 12332 | bool compound_p = (outer == PLUS || outer == MINUS); |
ef4bddc2 | 12333 | machine_mode mode = GET_MODE (x); |
4745e701 JG |
12334 | |
12335 | gcc_checking_assert (code == MULT); | |
12336 | ||
12337 | op0 = XEXP (x, 0); | |
12338 | op1 = XEXP (x, 1); | |
12339 | ||
12340 | if (VECTOR_MODE_P (mode)) | |
df81764b TC |
12341 | { |
12342 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
df81764b TC |
12343 | if (vec_flags & VEC_ADVSIMD) |
12344 | { | |
63834c84 JW |
12345 | /* The select-operand-high-half versions of the instruction have the |
12346 | same cost as the three vector version - don't add the costs of the | |
12347 | extension or selection into the costs of the multiply. */ | |
12348 | op0 = aarch64_strip_extend_vec_half (op0); | |
12349 | op1 = aarch64_strip_extend_vec_half (op1); | |
df81764b | 12350 | /* The by-element versions of the instruction have the same costs as |
1d65c9d2 JW |
12351 | the normal 3-vector version. We make an assumption that the input |
12352 | to the VEC_DUPLICATE is already on the FP & SIMD side. This means | |
12353 | costing of a MUL by element pre RA is a bit optimistic. */ | |
12354 | op0 = aarch64_strip_duplicate_vec_elt (op0); | |
12355 | op1 = aarch64_strip_duplicate_vec_elt (op1); | |
df81764b | 12356 | } |
a11ef532 AV |
12357 | cost += rtx_cost (op0, mode, MULT, 0, speed); |
12358 | cost += rtx_cost (op1, mode, MULT, 1, speed); | |
12359 | if (speed) | |
12360 | { | |
12361 | if (GET_CODE (x) == MULT) | |
12362 | cost += extra_cost->vect.mult; | |
12363 | /* This is to catch the SSRA costing currently flowing here. */ | |
12364 | else | |
12365 | cost += extra_cost->vect.alu; | |
12366 | } | |
12367 | return cost; | |
df81764b | 12368 | } |
4745e701 JG |
12369 | |
12370 | /* Integer multiply/fma. */ | |
12371 | if (GET_MODE_CLASS (mode) == MODE_INT) | |
12372 | { | |
12373 | /* The multiply will be canonicalized as a shift, cost it as such. */ | |
0a78ebe4 KT |
12374 | if (aarch64_shift_p (GET_CODE (x)) |
12375 | || (CONST_INT_P (op1) | |
12376 | && exact_log2 (INTVAL (op1)) > 0)) | |
4745e701 | 12377 | { |
0a78ebe4 KT |
12378 | bool is_extend = GET_CODE (op0) == ZERO_EXTEND |
12379 | || GET_CODE (op0) == SIGN_EXTEND; | |
4745e701 JG |
12380 | if (speed) |
12381 | { | |
0a78ebe4 KT |
12382 | if (compound_p) |
12383 | { | |
b10f1009 AP |
12384 | /* If the shift is considered cheap, |
12385 | then don't add any cost. */ | |
12386 | if (aarch64_cheap_mult_shift_p (x)) | |
12387 | ; | |
12388 | else if (REG_P (op1)) | |
0a78ebe4 KT |
12389 | /* ARITH + shift-by-register. */ |
12390 | cost += extra_cost->alu.arith_shift_reg; | |
12391 | else if (is_extend) | |
12392 | /* ARITH + extended register. We don't have a cost field | |
12393 | for ARITH+EXTEND+SHIFT, so use extend_arith here. */ | |
12394 | cost += extra_cost->alu.extend_arith; | |
12395 | else | |
12396 | /* ARITH + shift-by-immediate. */ | |
12397 | cost += extra_cost->alu.arith_shift; | |
12398 | } | |
4745e701 JG |
12399 | else |
12400 | /* LSL (immediate). */ | |
0a78ebe4 KT |
12401 | cost += extra_cost->alu.shift; |
12402 | ||
4745e701 | 12403 | } |
0a78ebe4 KT |
12404 | /* Strip extends as we will have costed them in the case above. */ |
12405 | if (is_extend) | |
b10f1009 | 12406 | op0 = aarch64_strip_extend (op0, true); |
4745e701 | 12407 | |
e548c9df | 12408 | cost += rtx_cost (op0, VOIDmode, code, 0, speed); |
4745e701 JG |
12409 | |
12410 | return cost; | |
12411 | } | |
12412 | ||
d2ac256b KT |
12413 | /* MNEG or [US]MNEGL. Extract the NEG operand and indicate that it's a |
12414 | compound and let the below cases handle it. After all, MNEG is a | |
12415 | special-case alias of MSUB. */ | |
12416 | if (GET_CODE (op0) == NEG) | |
12417 | { | |
12418 | op0 = XEXP (op0, 0); | |
12419 | compound_p = true; | |
12420 | } | |
12421 | ||
4745e701 JG |
12422 | /* Integer multiplies or FMAs have zero/sign extending variants. */ |
12423 | if ((GET_CODE (op0) == ZERO_EXTEND | |
12424 | && GET_CODE (op1) == ZERO_EXTEND) | |
12425 | || (GET_CODE (op0) == SIGN_EXTEND | |
12426 | && GET_CODE (op1) == SIGN_EXTEND)) | |
12427 | { | |
e548c9df AM |
12428 | cost += rtx_cost (XEXP (op0, 0), VOIDmode, MULT, 0, speed); |
12429 | cost += rtx_cost (XEXP (op1, 0), VOIDmode, MULT, 1, speed); | |
4745e701 JG |
12430 | |
12431 | if (speed) | |
12432 | { | |
0a78ebe4 | 12433 | if (compound_p) |
d2ac256b | 12434 | /* SMADDL/UMADDL/UMSUBL/SMSUBL. */ |
4745e701 JG |
12435 | cost += extra_cost->mult[0].extend_add; |
12436 | else | |
12437 | /* MUL/SMULL/UMULL. */ | |
12438 | cost += extra_cost->mult[0].extend; | |
12439 | } | |
12440 | ||
12441 | return cost; | |
12442 | } | |
12443 | ||
d2ac256b | 12444 | /* This is either an integer multiply or a MADD. In both cases |
4745e701 | 12445 | we want to recurse and cost the operands. */ |
e548c9df AM |
12446 | cost += rtx_cost (op0, mode, MULT, 0, speed); |
12447 | cost += rtx_cost (op1, mode, MULT, 1, speed); | |
4745e701 JG |
12448 | |
12449 | if (speed) | |
12450 | { | |
0a78ebe4 | 12451 | if (compound_p) |
d2ac256b | 12452 | /* MADD/MSUB. */ |
4745e701 JG |
12453 | cost += extra_cost->mult[mode == DImode].add; |
12454 | else | |
12455 | /* MUL. */ | |
12456 | cost += extra_cost->mult[mode == DImode].simple; | |
12457 | } | |
12458 | ||
12459 | return cost; | |
12460 | } | |
12461 | else | |
12462 | { | |
12463 | if (speed) | |
12464 | { | |
3d840f7d | 12465 | /* Floating-point FMA/FMUL can also support negations of the |
d318517d SN |
12466 | operands, unless the rounding mode is upward or downward in |
12467 | which case FNMUL is different than FMUL with operand negation. */ | |
12468 | bool neg0 = GET_CODE (op0) == NEG; | |
12469 | bool neg1 = GET_CODE (op1) == NEG; | |
12470 | if (compound_p || !flag_rounding_math || (neg0 && neg1)) | |
12471 | { | |
12472 | if (neg0) | |
12473 | op0 = XEXP (op0, 0); | |
12474 | if (neg1) | |
12475 | op1 = XEXP (op1, 0); | |
12476 | } | |
4745e701 | 12477 | |
0a78ebe4 | 12478 | if (compound_p) |
4745e701 JG |
12479 | /* FMADD/FNMADD/FNMSUB/FMSUB. */ |
12480 | cost += extra_cost->fp[mode == DFmode].fma; | |
12481 | else | |
3d840f7d | 12482 | /* FMUL/FNMUL. */ |
4745e701 JG |
12483 | cost += extra_cost->fp[mode == DFmode].mult; |
12484 | } | |
12485 | ||
e548c9df AM |
12486 | cost += rtx_cost (op0, mode, MULT, 0, speed); |
12487 | cost += rtx_cost (op1, mode, MULT, 1, speed); | |
4745e701 JG |
12488 | return cost; |
12489 | } | |
43e9d192 IB |
12490 | } |
12491 | ||
67747367 JG |
12492 | static int |
12493 | aarch64_address_cost (rtx x, | |
ef4bddc2 | 12494 | machine_mode mode, |
67747367 JG |
12495 | addr_space_t as ATTRIBUTE_UNUSED, |
12496 | bool speed) | |
12497 | { | |
12498 | enum rtx_code c = GET_CODE (x); | |
b175b679 | 12499 | const struct cpu_addrcost_table *addr_cost = aarch64_tune_params.addr_cost; |
67747367 JG |
12500 | struct aarch64_address_info info; |
12501 | int cost = 0; | |
12502 | info.shift = 0; | |
12503 | ||
a97d8b98 | 12504 | if (!aarch64_classify_address (&info, x, mode, false)) |
67747367 | 12505 | { |
3793ecc1 | 12506 | if (GET_CODE (x) == CONST || SYMBOL_REF_P (x)) |
67747367 JG |
12507 | { |
12508 | /* This is a CONST or SYMBOL ref which will be split | |
12509 | in a different way depending on the code model in use. | |
12510 | Cost it through the generic infrastructure. */ | |
e548c9df | 12511 | int cost_symbol_ref = rtx_cost (x, Pmode, MEM, 1, speed); |
67747367 JG |
12512 | /* Divide through by the cost of one instruction to |
12513 | bring it to the same units as the address costs. */ | |
12514 | cost_symbol_ref /= COSTS_N_INSNS (1); | |
12515 | /* The cost is then the cost of preparing the address, | |
12516 | followed by an immediate (possibly 0) offset. */ | |
12517 | return cost_symbol_ref + addr_cost->imm_offset; | |
12518 | } | |
12519 | else | |
12520 | { | |
12521 | /* This is most likely a jump table from a case | |
12522 | statement. */ | |
12523 | return addr_cost->register_offset; | |
12524 | } | |
12525 | } | |
12526 | ||
12527 | switch (info.type) | |
12528 | { | |
12529 | case ADDRESS_LO_SUM: | |
12530 | case ADDRESS_SYMBOLIC: | |
12531 | case ADDRESS_REG_IMM: | |
12532 | cost += addr_cost->imm_offset; | |
12533 | break; | |
12534 | ||
12535 | case ADDRESS_REG_WB: | |
12536 | if (c == PRE_INC || c == PRE_DEC || c == PRE_MODIFY) | |
12537 | cost += addr_cost->pre_modify; | |
12538 | else if (c == POST_INC || c == POST_DEC || c == POST_MODIFY) | |
6b8b0c8e | 12539 | { |
05783fe6 RS |
12540 | unsigned int nvectors = aarch64_ldn_stn_vectors (mode); |
12541 | if (nvectors == 3) | |
6b8b0c8e | 12542 | cost += addr_cost->post_modify_ld3_st3; |
05783fe6 | 12543 | else if (nvectors == 4) |
6b8b0c8e RS |
12544 | cost += addr_cost->post_modify_ld4_st4; |
12545 | else | |
12546 | cost += addr_cost->post_modify; | |
12547 | } | |
67747367 JG |
12548 | else |
12549 | gcc_unreachable (); | |
12550 | ||
12551 | break; | |
12552 | ||
12553 | case ADDRESS_REG_REG: | |
12554 | cost += addr_cost->register_offset; | |
12555 | break; | |
12556 | ||
67747367 | 12557 | case ADDRESS_REG_SXTW: |
783879e6 EM |
12558 | cost += addr_cost->register_sextend; |
12559 | break; | |
12560 | ||
12561 | case ADDRESS_REG_UXTW: | |
12562 | cost += addr_cost->register_zextend; | |
67747367 JG |
12563 | break; |
12564 | ||
12565 | default: | |
12566 | gcc_unreachable (); | |
12567 | } | |
12568 | ||
12569 | ||
12570 | if (info.shift > 0) | |
12571 | { | |
12572 | /* For the sake of calculating the cost of the shifted register | |
12573 | component, we can treat same sized modes in the same way. */ | |
6a70badb RS |
12574 | if (known_eq (GET_MODE_BITSIZE (mode), 16)) |
12575 | cost += addr_cost->addr_scale_costs.hi; | |
12576 | else if (known_eq (GET_MODE_BITSIZE (mode), 32)) | |
12577 | cost += addr_cost->addr_scale_costs.si; | |
12578 | else if (known_eq (GET_MODE_BITSIZE (mode), 64)) | |
12579 | cost += addr_cost->addr_scale_costs.di; | |
12580 | else | |
12581 | /* We can't tell, or this is a 128-bit vector. */ | |
12582 | cost += addr_cost->addr_scale_costs.ti; | |
67747367 JG |
12583 | } |
12584 | ||
12585 | return cost; | |
12586 | } | |
12587 | ||
b9066f5a MW |
12588 | /* Return the cost of a branch. If SPEED_P is true then the compiler is |
12589 | optimizing for speed. If PREDICTABLE_P is true then the branch is predicted | |
12590 | to be taken. */ | |
12591 | ||
12592 | int | |
12593 | aarch64_branch_cost (bool speed_p, bool predictable_p) | |
12594 | { | |
12595 | /* When optimizing for speed, use the cost of unpredictable branches. */ | |
12596 | const struct cpu_branch_cost *branch_costs = | |
b175b679 | 12597 | aarch64_tune_params.branch_costs; |
b9066f5a MW |
12598 | |
12599 | if (!speed_p || predictable_p) | |
12600 | return branch_costs->predictable; | |
12601 | else | |
12602 | return branch_costs->unpredictable; | |
12603 | } | |
12604 | ||
7de23b8c | 12605 | /* Return true if X is a zero or sign extract |
7cc2145f JG |
12606 | usable in an ADD or SUB (extended register) instruction. */ |
12607 | static bool | |
7de23b8c | 12608 | aarch64_rtx_arith_op_extract_p (rtx x) |
7cc2145f | 12609 | { |
e47c4031 KT |
12610 | /* The simple case <ARITH>, XD, XN, XM, [us]xt. |
12611 | No shift. */ | |
7de23b8c AC |
12612 | if (GET_CODE (x) == SIGN_EXTEND |
12613 | || GET_CODE (x) == ZERO_EXTEND) | |
e47c4031 | 12614 | return REG_P (XEXP (x, 0)); |
7cc2145f JG |
12615 | |
12616 | return false; | |
12617 | } | |
12618 | ||
61263118 KT |
12619 | static bool |
12620 | aarch64_frint_unspec_p (unsigned int u) | |
12621 | { | |
12622 | switch (u) | |
12623 | { | |
12624 | case UNSPEC_FRINTZ: | |
12625 | case UNSPEC_FRINTP: | |
12626 | case UNSPEC_FRINTM: | |
12627 | case UNSPEC_FRINTA: | |
12628 | case UNSPEC_FRINTN: | |
12629 | case UNSPEC_FRINTX: | |
12630 | case UNSPEC_FRINTI: | |
12631 | return true; | |
12632 | ||
12633 | default: | |
12634 | return false; | |
12635 | } | |
12636 | } | |
12637 | ||
fb0cb7fa KT |
12638 | /* Return true iff X is an rtx that will match an extr instruction |
12639 | i.e. as described in the *extr<mode>5_insn family of patterns. | |
12640 | OP0 and OP1 will be set to the operands of the shifts involved | |
12641 | on success and will be NULL_RTX otherwise. */ | |
12642 | ||
12643 | static bool | |
12644 | aarch64_extr_rtx_p (rtx x, rtx *res_op0, rtx *res_op1) | |
12645 | { | |
12646 | rtx op0, op1; | |
77e994c9 RS |
12647 | scalar_int_mode mode; |
12648 | if (!is_a <scalar_int_mode> (GET_MODE (x), &mode)) | |
12649 | return false; | |
fb0cb7fa KT |
12650 | |
12651 | *res_op0 = NULL_RTX; | |
12652 | *res_op1 = NULL_RTX; | |
12653 | ||
12654 | if (GET_CODE (x) != IOR) | |
12655 | return false; | |
12656 | ||
12657 | op0 = XEXP (x, 0); | |
12658 | op1 = XEXP (x, 1); | |
12659 | ||
12660 | if ((GET_CODE (op0) == ASHIFT && GET_CODE (op1) == LSHIFTRT) | |
12661 | || (GET_CODE (op1) == ASHIFT && GET_CODE (op0) == LSHIFTRT)) | |
12662 | { | |
12663 | /* Canonicalise locally to ashift in op0, lshiftrt in op1. */ | |
12664 | if (GET_CODE (op1) == ASHIFT) | |
12665 | std::swap (op0, op1); | |
12666 | ||
12667 | if (!CONST_INT_P (XEXP (op0, 1)) || !CONST_INT_P (XEXP (op1, 1))) | |
12668 | return false; | |
12669 | ||
12670 | unsigned HOST_WIDE_INT shft_amnt_0 = UINTVAL (XEXP (op0, 1)); | |
12671 | unsigned HOST_WIDE_INT shft_amnt_1 = UINTVAL (XEXP (op1, 1)); | |
12672 | ||
12673 | if (shft_amnt_0 < GET_MODE_BITSIZE (mode) | |
12674 | && shft_amnt_0 + shft_amnt_1 == GET_MODE_BITSIZE (mode)) | |
12675 | { | |
12676 | *res_op0 = XEXP (op0, 0); | |
12677 | *res_op1 = XEXP (op1, 0); | |
12678 | return true; | |
12679 | } | |
12680 | } | |
12681 | ||
12682 | return false; | |
12683 | } | |
12684 | ||
2d5ffe46 AP |
12685 | /* Calculate the cost of calculating (if_then_else (OP0) (OP1) (OP2)), |
12686 | storing it in *COST. Result is true if the total cost of the operation | |
12687 | has now been calculated. */ | |
12688 | static bool | |
12689 | aarch64_if_then_else_costs (rtx op0, rtx op1, rtx op2, int *cost, bool speed) | |
12690 | { | |
b9e3afe9 AP |
12691 | rtx inner; |
12692 | rtx comparator; | |
12693 | enum rtx_code cmpcode; | |
e2a14bec RS |
12694 | const struct cpu_cost_table *extra_cost |
12695 | = aarch64_tune_params.insn_extra_cost; | |
b9e3afe9 AP |
12696 | |
12697 | if (COMPARISON_P (op0)) | |
12698 | { | |
12699 | inner = XEXP (op0, 0); | |
12700 | comparator = XEXP (op0, 1); | |
12701 | cmpcode = GET_CODE (op0); | |
12702 | } | |
12703 | else | |
12704 | { | |
12705 | inner = op0; | |
12706 | comparator = const0_rtx; | |
12707 | cmpcode = NE; | |
12708 | } | |
12709 | ||
2d5ffe46 AP |
12710 | if (GET_CODE (op1) == PC || GET_CODE (op2) == PC) |
12711 | { | |
12712 | /* Conditional branch. */ | |
b9e3afe9 | 12713 | if (GET_MODE_CLASS (GET_MODE (inner)) == MODE_CC) |
2d5ffe46 AP |
12714 | return true; |
12715 | else | |
12716 | { | |
b9e3afe9 | 12717 | if (cmpcode == NE || cmpcode == EQ) |
2d5ffe46 | 12718 | { |
2d5ffe46 AP |
12719 | if (comparator == const0_rtx) |
12720 | { | |
12721 | /* TBZ/TBNZ/CBZ/CBNZ. */ | |
12722 | if (GET_CODE (inner) == ZERO_EXTRACT) | |
12723 | /* TBZ/TBNZ. */ | |
e548c9df AM |
12724 | *cost += rtx_cost (XEXP (inner, 0), VOIDmode, |
12725 | ZERO_EXTRACT, 0, speed); | |
12726 | else | |
12727 | /* CBZ/CBNZ. */ | |
12728 | *cost += rtx_cost (inner, VOIDmode, cmpcode, 0, speed); | |
2d5ffe46 | 12729 | |
e2a14bec RS |
12730 | return true; |
12731 | } | |
12732 | if (register_operand (inner, VOIDmode) | |
12733 | && aarch64_imm24 (comparator, VOIDmode)) | |
12734 | { | |
12735 | /* SUB and SUBS. */ | |
12736 | *cost += COSTS_N_INSNS (2); | |
12737 | if (speed) | |
12738 | *cost += extra_cost->alu.arith * 2; | |
12739 | return true; | |
12740 | } | |
2d5ffe46 | 12741 | } |
b9e3afe9 | 12742 | else if (cmpcode == LT || cmpcode == GE) |
2d5ffe46 | 12743 | { |
2d5ffe46 AP |
12744 | /* TBZ/TBNZ. */ |
12745 | if (comparator == const0_rtx) | |
12746 | return true; | |
12747 | } | |
12748 | } | |
12749 | } | |
b9e3afe9 | 12750 | else if (GET_MODE_CLASS (GET_MODE (inner)) == MODE_CC) |
2d5ffe46 | 12751 | { |
786298dc | 12752 | /* CCMP. */ |
6dfeb7ce | 12753 | if (GET_CODE (op1) == COMPARE) |
786298dc WD |
12754 | { |
12755 | /* Increase cost of CCMP reg, 0, imm, CC to prefer CMP reg, 0. */ | |
12756 | if (XEXP (op1, 1) == const0_rtx) | |
12757 | *cost += 1; | |
12758 | if (speed) | |
12759 | { | |
12760 | machine_mode mode = GET_MODE (XEXP (op1, 0)); | |
786298dc WD |
12761 | |
12762 | if (GET_MODE_CLASS (mode) == MODE_INT) | |
12763 | *cost += extra_cost->alu.arith; | |
12764 | else | |
12765 | *cost += extra_cost->fp[mode == DFmode].compare; | |
12766 | } | |
12767 | return true; | |
12768 | } | |
12769 | ||
2d5ffe46 AP |
12770 | /* It's a conditional operation based on the status flags, |
12771 | so it must be some flavor of CSEL. */ | |
12772 | ||
12773 | /* CSNEG, CSINV, and CSINC are handled for free as part of CSEL. */ | |
12774 | if (GET_CODE (op1) == NEG | |
12775 | || GET_CODE (op1) == NOT | |
12776 | || (GET_CODE (op1) == PLUS && XEXP (op1, 1) == const1_rtx)) | |
12777 | op1 = XEXP (op1, 0); | |
bad00732 KT |
12778 | else if (GET_CODE (op1) == ZERO_EXTEND && GET_CODE (op2) == ZERO_EXTEND) |
12779 | { | |
12780 | /* CSEL with zero-extension (*cmovdi_insn_uxtw). */ | |
12781 | op1 = XEXP (op1, 0); | |
12782 | op2 = XEXP (op2, 0); | |
12783 | } | |
d572ad49 AC |
12784 | else if (GET_CODE (op1) == ZERO_EXTEND && op2 == const0_rtx) |
12785 | { | |
12786 | inner = XEXP (op1, 0); | |
12787 | if (GET_CODE (inner) == NEG || GET_CODE (inner) == NOT) | |
12788 | /* CSINV/NEG with zero extend + const 0 (*csinv3_uxtw_insn3). */ | |
12789 | op1 = XEXP (inner, 0); | |
12790 | } | |
2d5ffe46 | 12791 | |
e548c9df AM |
12792 | *cost += rtx_cost (op1, VOIDmode, IF_THEN_ELSE, 1, speed); |
12793 | *cost += rtx_cost (op2, VOIDmode, IF_THEN_ELSE, 2, speed); | |
2d5ffe46 AP |
12794 | return true; |
12795 | } | |
12796 | ||
12797 | /* We don't know what this is, cost all operands. */ | |
12798 | return false; | |
12799 | } | |
12800 | ||
283b6c85 KT |
12801 | /* Check whether X is a bitfield operation of the form shift + extend that |
12802 | maps down to a UBFIZ/SBFIZ/UBFX/SBFX instruction. If so, return the | |
12803 | operand to which the bitfield operation is applied. Otherwise return | |
12804 | NULL_RTX. */ | |
12805 | ||
12806 | static rtx | |
12807 | aarch64_extend_bitfield_pattern_p (rtx x) | |
12808 | { | |
12809 | rtx_code outer_code = GET_CODE (x); | |
12810 | machine_mode outer_mode = GET_MODE (x); | |
12811 | ||
12812 | if (outer_code != ZERO_EXTEND && outer_code != SIGN_EXTEND | |
12813 | && outer_mode != SImode && outer_mode != DImode) | |
12814 | return NULL_RTX; | |
12815 | ||
12816 | rtx inner = XEXP (x, 0); | |
12817 | rtx_code inner_code = GET_CODE (inner); | |
12818 | machine_mode inner_mode = GET_MODE (inner); | |
12819 | rtx op = NULL_RTX; | |
12820 | ||
12821 | switch (inner_code) | |
12822 | { | |
12823 | case ASHIFT: | |
12824 | if (CONST_INT_P (XEXP (inner, 1)) | |
12825 | && (inner_mode == QImode || inner_mode == HImode)) | |
12826 | op = XEXP (inner, 0); | |
12827 | break; | |
12828 | case LSHIFTRT: | |
12829 | if (outer_code == ZERO_EXTEND && CONST_INT_P (XEXP (inner, 1)) | |
12830 | && (inner_mode == QImode || inner_mode == HImode)) | |
12831 | op = XEXP (inner, 0); | |
12832 | break; | |
12833 | case ASHIFTRT: | |
12834 | if (outer_code == SIGN_EXTEND && CONST_INT_P (XEXP (inner, 1)) | |
12835 | && (inner_mode == QImode || inner_mode == HImode)) | |
12836 | op = XEXP (inner, 0); | |
12837 | break; | |
12838 | default: | |
12839 | break; | |
12840 | } | |
12841 | ||
12842 | return op; | |
12843 | } | |
12844 | ||
8c83f71d KT |
12845 | /* Return true if the mask and a shift amount from an RTX of the form |
12846 | (x << SHFT_AMNT) & MASK are valid to combine into a UBFIZ instruction of | |
12847 | mode MODE. See the *andim_ashift<mode>_bfiz pattern. */ | |
12848 | ||
12849 | bool | |
77e994c9 RS |
12850 | aarch64_mask_and_shift_for_ubfiz_p (scalar_int_mode mode, rtx mask, |
12851 | rtx shft_amnt) | |
8c83f71d KT |
12852 | { |
12853 | return CONST_INT_P (mask) && CONST_INT_P (shft_amnt) | |
17ad8cde JJ |
12854 | && INTVAL (mask) > 0 |
12855 | && UINTVAL (shft_amnt) < GET_MODE_BITSIZE (mode) | |
12856 | && exact_log2 ((UINTVAL (mask) >> UINTVAL (shft_amnt)) + 1) >= 0 | |
12857 | && (UINTVAL (mask) | |
12858 | & ((HOST_WIDE_INT_1U << UINTVAL (shft_amnt)) - 1)) == 0; | |
8c83f71d KT |
12859 | } |
12860 | ||
6a0d3939 SE |
12861 | /* Return true if the masks and a shift amount from an RTX of the form |
12862 | ((x & MASK1) | ((y << SHIFT_AMNT) & MASK2)) are valid to combine into | |
12863 | a BFI instruction of mode MODE. See *arch64_bfi patterns. */ | |
12864 | ||
12865 | bool | |
12866 | aarch64_masks_and_shift_for_bfi_p (scalar_int_mode mode, | |
12867 | unsigned HOST_WIDE_INT mask1, | |
12868 | unsigned HOST_WIDE_INT shft_amnt, | |
12869 | unsigned HOST_WIDE_INT mask2) | |
12870 | { | |
12871 | unsigned HOST_WIDE_INT t; | |
12872 | ||
12873 | /* Verify that there is no overlap in what bits are set in the two masks. */ | |
12874 | if (mask1 != ~mask2) | |
12875 | return false; | |
12876 | ||
12877 | /* Verify that mask2 is not all zeros or ones. */ | |
12878 | if (mask2 == 0 || mask2 == HOST_WIDE_INT_M1U) | |
12879 | return false; | |
12880 | ||
12881 | /* The shift amount should always be less than the mode size. */ | |
12882 | gcc_assert (shft_amnt < GET_MODE_BITSIZE (mode)); | |
12883 | ||
12884 | /* Verify that the mask being shifted is contiguous and would be in the | |
12885 | least significant bits after shifting by shft_amnt. */ | |
12886 | t = mask2 + (HOST_WIDE_INT_1U << shft_amnt); | |
12887 | return (t == (t & -t)); | |
12888 | } | |
12889 | ||
43e9d192 IB |
12890 | /* Calculate the cost of calculating X, storing it in *COST. Result |
12891 | is true if the total cost of the operation has now been calculated. */ | |
12892 | static bool | |
e548c9df | 12893 | aarch64_rtx_costs (rtx x, machine_mode mode, int outer ATTRIBUTE_UNUSED, |
43e9d192 IB |
12894 | int param ATTRIBUTE_UNUSED, int *cost, bool speed) |
12895 | { | |
a8eecd00 | 12896 | rtx op0, op1, op2; |
73250c4c | 12897 | const struct cpu_cost_table *extra_cost |
b175b679 | 12898 | = aarch64_tune_params.insn_extra_cost; |
1d5c43db | 12899 | rtx_code code = GET_CODE (x); |
b4206259 | 12900 | scalar_int_mode int_mode; |
43e9d192 | 12901 | |
7fc5ef02 JG |
12902 | /* By default, assume that everything has equivalent cost to the |
12903 | cheapest instruction. Any additional costs are applied as a delta | |
12904 | above this default. */ | |
12905 | *cost = COSTS_N_INSNS (1); | |
12906 | ||
43e9d192 IB |
12907 | switch (code) |
12908 | { | |
12909 | case SET: | |
ba123b0d JG |
12910 | /* The cost depends entirely on the operands to SET. */ |
12911 | *cost = 0; | |
43e9d192 IB |
12912 | op0 = SET_DEST (x); |
12913 | op1 = SET_SRC (x); | |
12914 | ||
12915 | switch (GET_CODE (op0)) | |
12916 | { | |
12917 | case MEM: | |
12918 | if (speed) | |
2961177e JG |
12919 | { |
12920 | rtx address = XEXP (op0, 0); | |
b6875aac KV |
12921 | if (VECTOR_MODE_P (mode)) |
12922 | *cost += extra_cost->ldst.storev; | |
12923 | else if (GET_MODE_CLASS (mode) == MODE_INT) | |
2961177e JG |
12924 | *cost += extra_cost->ldst.store; |
12925 | else if (mode == SFmode) | |
12926 | *cost += extra_cost->ldst.storef; | |
12927 | else if (mode == DFmode) | |
12928 | *cost += extra_cost->ldst.stored; | |
12929 | ||
12930 | *cost += | |
12931 | COSTS_N_INSNS (aarch64_address_cost (address, mode, | |
12932 | 0, speed)); | |
12933 | } | |
43e9d192 | 12934 | |
e548c9df | 12935 | *cost += rtx_cost (op1, mode, SET, 1, speed); |
43e9d192 IB |
12936 | return true; |
12937 | ||
12938 | case SUBREG: | |
12939 | if (! REG_P (SUBREG_REG (op0))) | |
e548c9df | 12940 | *cost += rtx_cost (SUBREG_REG (op0), VOIDmode, SET, 0, speed); |
ba123b0d | 12941 | |
43e9d192 IB |
12942 | /* Fall through. */ |
12943 | case REG: | |
b6875aac KV |
12944 | /* The cost is one per vector-register copied. */ |
12945 | if (VECTOR_MODE_P (GET_MODE (op0)) && REG_P (op1)) | |
12946 | { | |
fe1447a1 RS |
12947 | int nregs = aarch64_hard_regno_nregs (V0_REGNUM, GET_MODE (op0)); |
12948 | *cost = COSTS_N_INSNS (nregs); | |
b6875aac | 12949 | } |
ba123b0d JG |
12950 | /* const0_rtx is in general free, but we will use an |
12951 | instruction to set a register to 0. */ | |
b6875aac KV |
12952 | else if (REG_P (op1) || op1 == const0_rtx) |
12953 | { | |
12954 | /* The cost is 1 per register copied. */ | |
fe1447a1 RS |
12955 | int nregs = aarch64_hard_regno_nregs (R0_REGNUM, GET_MODE (op0)); |
12956 | *cost = COSTS_N_INSNS (nregs); | |
b6875aac | 12957 | } |
ba123b0d JG |
12958 | else |
12959 | /* Cost is just the cost of the RHS of the set. */ | |
e548c9df | 12960 | *cost += rtx_cost (op1, mode, SET, 1, speed); |
43e9d192 IB |
12961 | return true; |
12962 | ||
ba123b0d | 12963 | case ZERO_EXTRACT: |
43e9d192 | 12964 | case SIGN_EXTRACT: |
ba123b0d JG |
12965 | /* Bit-field insertion. Strip any redundant widening of |
12966 | the RHS to meet the width of the target. */ | |
568b9c0e | 12967 | if (SUBREG_P (op1)) |
43e9d192 IB |
12968 | op1 = SUBREG_REG (op1); |
12969 | if ((GET_CODE (op1) == ZERO_EXTEND | |
12970 | || GET_CODE (op1) == SIGN_EXTEND) | |
4aa81c2e | 12971 | && CONST_INT_P (XEXP (op0, 1)) |
77e994c9 RS |
12972 | && is_a <scalar_int_mode> (GET_MODE (XEXP (op1, 0)), &int_mode) |
12973 | && GET_MODE_BITSIZE (int_mode) >= INTVAL (XEXP (op0, 1))) | |
43e9d192 | 12974 | op1 = XEXP (op1, 0); |
ba123b0d JG |
12975 | |
12976 | if (CONST_INT_P (op1)) | |
12977 | { | |
12978 | /* MOV immediate is assumed to always be cheap. */ | |
12979 | *cost = COSTS_N_INSNS (1); | |
12980 | } | |
12981 | else | |
12982 | { | |
12983 | /* BFM. */ | |
12984 | if (speed) | |
12985 | *cost += extra_cost->alu.bfi; | |
e548c9df | 12986 | *cost += rtx_cost (op1, VOIDmode, (enum rtx_code) code, 1, speed); |
ba123b0d JG |
12987 | } |
12988 | ||
43e9d192 IB |
12989 | return true; |
12990 | ||
12991 | default: | |
ba123b0d JG |
12992 | /* We can't make sense of this, assume default cost. */ |
12993 | *cost = COSTS_N_INSNS (1); | |
61263118 | 12994 | return false; |
43e9d192 IB |
12995 | } |
12996 | return false; | |
12997 | ||
9dfc162c JG |
12998 | case CONST_INT: |
12999 | /* If an instruction can incorporate a constant within the | |
13000 | instruction, the instruction's expression avoids calling | |
13001 | rtx_cost() on the constant. If rtx_cost() is called on a | |
13002 | constant, then it is usually because the constant must be | |
13003 | moved into a register by one or more instructions. | |
13004 | ||
13005 | The exception is constant 0, which can be expressed | |
13006 | as XZR/WZR and is therefore free. The exception to this is | |
13007 | if we have (set (reg) (const0_rtx)) in which case we must cost | |
13008 | the move. However, we can catch that when we cost the SET, so | |
13009 | we don't need to consider that here. */ | |
13010 | if (x == const0_rtx) | |
13011 | *cost = 0; | |
13012 | else | |
13013 | { | |
13014 | /* To an approximation, building any other constant is | |
13015 | proportionally expensive to the number of instructions | |
13016 | required to build that constant. This is true whether we | |
13017 | are compiling for SPEED or otherwise. */ | |
77e994c9 RS |
13018 | if (!is_a <scalar_int_mode> (mode, &int_mode)) |
13019 | int_mode = word_mode; | |
82614948 | 13020 | *cost = COSTS_N_INSNS (aarch64_internal_mov_immediate |
77e994c9 | 13021 | (NULL_RTX, x, false, int_mode)); |
9dfc162c JG |
13022 | } |
13023 | return true; | |
13024 | ||
13025 | case CONST_DOUBLE: | |
a2170965 TC |
13026 | |
13027 | /* First determine number of instructions to do the move | |
13028 | as an integer constant. */ | |
13029 | if (!aarch64_float_const_representable_p (x) | |
13030 | && !aarch64_can_const_movi_rtx_p (x, mode) | |
13031 | && aarch64_float_const_rtx_p (x)) | |
13032 | { | |
13033 | unsigned HOST_WIDE_INT ival; | |
13034 | bool succeed = aarch64_reinterpret_float_as_int (x, &ival); | |
13035 | gcc_assert (succeed); | |
13036 | ||
77e994c9 RS |
13037 | scalar_int_mode imode = (mode == HFmode |
13038 | ? SImode | |
13039 | : int_mode_for_mode (mode).require ()); | |
a2170965 TC |
13040 | int ncost = aarch64_internal_mov_immediate |
13041 | (NULL_RTX, gen_int_mode (ival, imode), false, imode); | |
13042 | *cost += COSTS_N_INSNS (ncost); | |
13043 | return true; | |
13044 | } | |
13045 | ||
9dfc162c JG |
13046 | if (speed) |
13047 | { | |
13048 | /* mov[df,sf]_aarch64. */ | |
13049 | if (aarch64_float_const_representable_p (x)) | |
13050 | /* FMOV (scalar immediate). */ | |
13051 | *cost += extra_cost->fp[mode == DFmode].fpconst; | |
13052 | else if (!aarch64_float_const_zero_rtx_p (x)) | |
13053 | { | |
13054 | /* This will be a load from memory. */ | |
13055 | if (mode == DFmode) | |
13056 | *cost += extra_cost->ldst.loadd; | |
13057 | else | |
13058 | *cost += extra_cost->ldst.loadf; | |
13059 | } | |
13060 | else | |
13061 | /* Otherwise this is +0.0. We get this using MOVI d0, #0 | |
13062 | or MOV v0.s[0], wzr - neither of which are modeled by the | |
13063 | cost tables. Just use the default cost. */ | |
13064 | { | |
13065 | } | |
13066 | } | |
13067 | ||
13068 | return true; | |
13069 | ||
43e9d192 IB |
13070 | case MEM: |
13071 | if (speed) | |
2961177e JG |
13072 | { |
13073 | /* For loads we want the base cost of a load, plus an | |
13074 | approximation for the additional cost of the addressing | |
13075 | mode. */ | |
13076 | rtx address = XEXP (x, 0); | |
b6875aac KV |
13077 | if (VECTOR_MODE_P (mode)) |
13078 | *cost += extra_cost->ldst.loadv; | |
13079 | else if (GET_MODE_CLASS (mode) == MODE_INT) | |
2961177e JG |
13080 | *cost += extra_cost->ldst.load; |
13081 | else if (mode == SFmode) | |
13082 | *cost += extra_cost->ldst.loadf; | |
13083 | else if (mode == DFmode) | |
13084 | *cost += extra_cost->ldst.loadd; | |
13085 | ||
13086 | *cost += | |
13087 | COSTS_N_INSNS (aarch64_address_cost (address, mode, | |
13088 | 0, speed)); | |
13089 | } | |
43e9d192 IB |
13090 | |
13091 | return true; | |
13092 | ||
13093 | case NEG: | |
4745e701 JG |
13094 | op0 = XEXP (x, 0); |
13095 | ||
b6875aac KV |
13096 | if (VECTOR_MODE_P (mode)) |
13097 | { | |
13098 | if (speed) | |
13099 | { | |
13100 | /* FNEG. */ | |
13101 | *cost += extra_cost->vect.alu; | |
13102 | } | |
13103 | return false; | |
13104 | } | |
13105 | ||
e548c9df AM |
13106 | if (GET_MODE_CLASS (mode) == MODE_INT) |
13107 | { | |
4745e701 JG |
13108 | if (GET_RTX_CLASS (GET_CODE (op0)) == RTX_COMPARE |
13109 | || GET_RTX_CLASS (GET_CODE (op0)) == RTX_COMM_COMPARE) | |
13110 | { | |
13111 | /* CSETM. */ | |
e548c9df | 13112 | *cost += rtx_cost (XEXP (op0, 0), VOIDmode, NEG, 0, speed); |
4745e701 JG |
13113 | return true; |
13114 | } | |
13115 | ||
13116 | /* Cost this as SUB wzr, X. */ | |
e548c9df | 13117 | op0 = CONST0_RTX (mode); |
4745e701 JG |
13118 | op1 = XEXP (x, 0); |
13119 | goto cost_minus; | |
13120 | } | |
13121 | ||
e548c9df | 13122 | if (GET_MODE_CLASS (mode) == MODE_FLOAT) |
4745e701 JG |
13123 | { |
13124 | /* Support (neg(fma...)) as a single instruction only if | |
13125 | sign of zeros is unimportant. This matches the decision | |
13126 | making in aarch64.md. */ | |
13127 | if (GET_CODE (op0) == FMA && !HONOR_SIGNED_ZEROS (GET_MODE (op0))) | |
13128 | { | |
13129 | /* FNMADD. */ | |
e548c9df | 13130 | *cost = rtx_cost (op0, mode, NEG, 0, speed); |
4745e701 JG |
13131 | return true; |
13132 | } | |
d318517d SN |
13133 | if (GET_CODE (op0) == MULT) |
13134 | { | |
13135 | /* FNMUL. */ | |
13136 | *cost = rtx_cost (op0, mode, NEG, 0, speed); | |
13137 | return true; | |
13138 | } | |
4745e701 JG |
13139 | if (speed) |
13140 | /* FNEG. */ | |
13141 | *cost += extra_cost->fp[mode == DFmode].neg; | |
13142 | return false; | |
13143 | } | |
13144 | ||
13145 | return false; | |
43e9d192 | 13146 | |
781aeb73 KT |
13147 | case CLRSB: |
13148 | case CLZ: | |
13149 | if (speed) | |
b6875aac KV |
13150 | { |
13151 | if (VECTOR_MODE_P (mode)) | |
13152 | *cost += extra_cost->vect.alu; | |
13153 | else | |
13154 | *cost += extra_cost->alu.clz; | |
13155 | } | |
781aeb73 KT |
13156 | |
13157 | return false; | |
13158 | ||
5bfc8303 WD |
13159 | case CTZ: |
13160 | *cost = COSTS_N_INSNS (2); | |
13161 | ||
13162 | if (speed) | |
13163 | *cost += extra_cost->alu.clz + extra_cost->alu.rev; | |
13164 | return false; | |
13165 | ||
43e9d192 IB |
13166 | case COMPARE: |
13167 | op0 = XEXP (x, 0); | |
13168 | op1 = XEXP (x, 1); | |
13169 | ||
13170 | if (op1 == const0_rtx | |
13171 | && GET_CODE (op0) == AND) | |
13172 | { | |
13173 | x = op0; | |
e548c9df | 13174 | mode = GET_MODE (op0); |
43e9d192 IB |
13175 | goto cost_logic; |
13176 | } | |
13177 | ||
a8eecd00 JG |
13178 | if (GET_MODE_CLASS (GET_MODE (op0)) == MODE_INT) |
13179 | { | |
13180 | /* TODO: A write to the CC flags possibly costs extra, this | |
13181 | needs encoding in the cost tables. */ | |
13182 | ||
e548c9df | 13183 | mode = GET_MODE (op0); |
a8eecd00 JG |
13184 | /* ANDS. */ |
13185 | if (GET_CODE (op0) == AND) | |
13186 | { | |
13187 | x = op0; | |
13188 | goto cost_logic; | |
13189 | } | |
13190 | ||
13191 | if (GET_CODE (op0) == PLUS) | |
13192 | { | |
13193 | /* ADDS (and CMN alias). */ | |
13194 | x = op0; | |
13195 | goto cost_plus; | |
13196 | } | |
13197 | ||
13198 | if (GET_CODE (op0) == MINUS) | |
13199 | { | |
13200 | /* SUBS. */ | |
13201 | x = op0; | |
13202 | goto cost_minus; | |
13203 | } | |
13204 | ||
345854d8 KT |
13205 | if (GET_CODE (op0) == ZERO_EXTRACT && op1 == const0_rtx |
13206 | && GET_MODE (x) == CC_NZmode && CONST_INT_P (XEXP (op0, 1)) | |
13207 | && CONST_INT_P (XEXP (op0, 2))) | |
13208 | { | |
13209 | /* COMPARE of ZERO_EXTRACT form of TST-immediate. | |
13210 | Handle it here directly rather than going to cost_logic | |
13211 | since we know the immediate generated for the TST is valid | |
13212 | so we can avoid creating an intermediate rtx for it only | |
13213 | for costing purposes. */ | |
13214 | if (speed) | |
13215 | *cost += extra_cost->alu.logical; | |
13216 | ||
13217 | *cost += rtx_cost (XEXP (op0, 0), GET_MODE (op0), | |
13218 | ZERO_EXTRACT, 0, speed); | |
13219 | return true; | |
13220 | } | |
13221 | ||
a8eecd00 JG |
13222 | if (GET_CODE (op1) == NEG) |
13223 | { | |
13224 | /* CMN. */ | |
13225 | if (speed) | |
13226 | *cost += extra_cost->alu.arith; | |
13227 | ||
e548c9df AM |
13228 | *cost += rtx_cost (op0, mode, COMPARE, 0, speed); |
13229 | *cost += rtx_cost (XEXP (op1, 0), mode, NEG, 1, speed); | |
a8eecd00 JG |
13230 | return true; |
13231 | } | |
13232 | ||
13233 | /* CMP. | |
13234 | ||
13235 | Compare can freely swap the order of operands, and | |
13236 | canonicalization puts the more complex operation first. | |
13237 | But the integer MINUS logic expects the shift/extend | |
13238 | operation in op1. */ | |
13239 | if (! (REG_P (op0) | |
568b9c0e | 13240 | || (SUBREG_P (op0) && REG_P (SUBREG_REG (op0))))) |
a8eecd00 JG |
13241 | { |
13242 | op0 = XEXP (x, 1); | |
13243 | op1 = XEXP (x, 0); | |
13244 | } | |
13245 | goto cost_minus; | |
13246 | } | |
13247 | ||
13248 | if (GET_MODE_CLASS (GET_MODE (op0)) == MODE_FLOAT) | |
13249 | { | |
13250 | /* FCMP. */ | |
13251 | if (speed) | |
13252 | *cost += extra_cost->fp[mode == DFmode].compare; | |
13253 | ||
13254 | if (CONST_DOUBLE_P (op1) && aarch64_float_const_zero_rtx_p (op1)) | |
13255 | { | |
e548c9df | 13256 | *cost += rtx_cost (op0, VOIDmode, COMPARE, 0, speed); |
a8eecd00 JG |
13257 | /* FCMP supports constant 0.0 for no extra cost. */ |
13258 | return true; | |
13259 | } | |
13260 | return false; | |
13261 | } | |
13262 | ||
b6875aac KV |
13263 | if (VECTOR_MODE_P (mode)) |
13264 | { | |
13265 | /* Vector compare. */ | |
13266 | if (speed) | |
13267 | *cost += extra_cost->vect.alu; | |
13268 | ||
13269 | if (aarch64_float_const_zero_rtx_p (op1)) | |
13270 | { | |
13271 | /* Vector cm (eq|ge|gt|lt|le) supports constant 0.0 for no extra | |
13272 | cost. */ | |
13273 | return true; | |
13274 | } | |
13275 | return false; | |
13276 | } | |
a8eecd00 | 13277 | return false; |
43e9d192 IB |
13278 | |
13279 | case MINUS: | |
4745e701 JG |
13280 | { |
13281 | op0 = XEXP (x, 0); | |
13282 | op1 = XEXP (x, 1); | |
13283 | ||
13284 | cost_minus: | |
0c3aab7f JW |
13285 | if (VECTOR_MODE_P (mode)) |
13286 | { | |
13287 | /* SUBL2 and SUBW2. */ | |
13288 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
13289 | if (vec_flags & VEC_ADVSIMD) | |
13290 | { | |
13291 | /* The select-operand-high-half versions of the sub instruction | |
13292 | have the same cost as the regular three vector version - | |
13293 | don't add the costs of the select into the costs of the sub. | |
13294 | */ | |
13295 | op0 = aarch64_strip_extend_vec_half (op0); | |
13296 | op1 = aarch64_strip_extend_vec_half (op1); | |
13297 | } | |
13298 | } | |
13299 | ||
e548c9df | 13300 | *cost += rtx_cost (op0, mode, MINUS, 0, speed); |
23cb6618 | 13301 | |
4745e701 JG |
13302 | /* Detect valid immediates. */ |
13303 | if ((GET_MODE_CLASS (mode) == MODE_INT | |
13304 | || (GET_MODE_CLASS (mode) == MODE_CC | |
13305 | && GET_MODE_CLASS (GET_MODE (op0)) == MODE_INT)) | |
13306 | && CONST_INT_P (op1) | |
13307 | && aarch64_uimm12_shift (INTVAL (op1))) | |
13308 | { | |
4745e701 JG |
13309 | if (speed) |
13310 | /* SUB(S) (immediate). */ | |
13311 | *cost += extra_cost->alu.arith; | |
13312 | return true; | |
4745e701 JG |
13313 | } |
13314 | ||
7cc2145f | 13315 | /* Look for SUB (extended register). */ |
7de23b8c AC |
13316 | if (is_a <scalar_int_mode> (mode) |
13317 | && aarch64_rtx_arith_op_extract_p (op1)) | |
7cc2145f JG |
13318 | { |
13319 | if (speed) | |
2533c820 | 13320 | *cost += extra_cost->alu.extend_arith; |
7cc2145f | 13321 | |
b10f1009 | 13322 | op1 = aarch64_strip_extend (op1, true); |
e47c4031 | 13323 | *cost += rtx_cost (op1, VOIDmode, |
e548c9df | 13324 | (enum rtx_code) GET_CODE (op1), 0, speed); |
7cc2145f JG |
13325 | return true; |
13326 | } | |
13327 | ||
b10f1009 | 13328 | rtx new_op1 = aarch64_strip_extend (op1, false); |
4745e701 JG |
13329 | |
13330 | /* Cost this as an FMA-alike operation. */ | |
13331 | if ((GET_CODE (new_op1) == MULT | |
0a78ebe4 | 13332 | || aarch64_shift_p (GET_CODE (new_op1))) |
4745e701 JG |
13333 | && code != COMPARE) |
13334 | { | |
13335 | *cost += aarch64_rtx_mult_cost (new_op1, MULT, | |
13336 | (enum rtx_code) code, | |
13337 | speed); | |
4745e701 JG |
13338 | return true; |
13339 | } | |
43e9d192 | 13340 | |
e548c9df | 13341 | *cost += rtx_cost (new_op1, VOIDmode, MINUS, 1, speed); |
43e9d192 | 13342 | |
4745e701 JG |
13343 | if (speed) |
13344 | { | |
b6875aac KV |
13345 | if (VECTOR_MODE_P (mode)) |
13346 | { | |
13347 | /* Vector SUB. */ | |
13348 | *cost += extra_cost->vect.alu; | |
13349 | } | |
13350 | else if (GET_MODE_CLASS (mode) == MODE_INT) | |
13351 | { | |
13352 | /* SUB(S). */ | |
13353 | *cost += extra_cost->alu.arith; | |
13354 | } | |
4745e701 | 13355 | else if (GET_MODE_CLASS (mode) == MODE_FLOAT) |
b6875aac KV |
13356 | { |
13357 | /* FSUB. */ | |
13358 | *cost += extra_cost->fp[mode == DFmode].addsub; | |
13359 | } | |
4745e701 JG |
13360 | } |
13361 | return true; | |
13362 | } | |
43e9d192 IB |
13363 | |
13364 | case PLUS: | |
4745e701 JG |
13365 | { |
13366 | rtx new_op0; | |
43e9d192 | 13367 | |
4745e701 JG |
13368 | op0 = XEXP (x, 0); |
13369 | op1 = XEXP (x, 1); | |
43e9d192 | 13370 | |
a8eecd00 | 13371 | cost_plus: |
8cd27a3b JW |
13372 | if (VECTOR_MODE_P (mode)) |
13373 | { | |
13374 | /* ADDL2 and ADDW2. */ | |
13375 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
13376 | if (vec_flags & VEC_ADVSIMD) | |
13377 | { | |
13378 | /* The select-operand-high-half versions of the add instruction | |
13379 | have the same cost as the regular three vector version - | |
13380 | don't add the costs of the select into the costs of the add. | |
13381 | */ | |
13382 | op0 = aarch64_strip_extend_vec_half (op0); | |
13383 | op1 = aarch64_strip_extend_vec_half (op1); | |
13384 | } | |
13385 | } | |
13386 | ||
4745e701 JG |
13387 | if (GET_RTX_CLASS (GET_CODE (op0)) == RTX_COMPARE |
13388 | || GET_RTX_CLASS (GET_CODE (op0)) == RTX_COMM_COMPARE) | |
13389 | { | |
13390 | /* CSINC. */ | |
e548c9df AM |
13391 | *cost += rtx_cost (XEXP (op0, 0), mode, PLUS, 0, speed); |
13392 | *cost += rtx_cost (op1, mode, PLUS, 1, speed); | |
4745e701 JG |
13393 | return true; |
13394 | } | |
43e9d192 | 13395 | |
4745e701 | 13396 | if (GET_MODE_CLASS (mode) == MODE_INT |
835d50c6 | 13397 | && (aarch64_plus_immediate (op1, mode) |
43cacb12 | 13398 | || aarch64_sve_addvl_addpl_immediate (op1, mode))) |
4745e701 | 13399 | { |
e548c9df | 13400 | *cost += rtx_cost (op0, mode, PLUS, 0, speed); |
43e9d192 | 13401 | |
4745e701 | 13402 | if (speed) |
a65b9ad8 KT |
13403 | { |
13404 | /* ADD (immediate). */ | |
13405 | *cost += extra_cost->alu.arith; | |
13406 | ||
13407 | /* Some tunings prefer to not use the VL-based scalar ops. | |
13408 | Increase the cost of the poly immediate to prevent their | |
13409 | formation. */ | |
13410 | if (GET_CODE (op1) == CONST_POLY_INT | |
13411 | && (aarch64_tune_params.extra_tuning_flags | |
13412 | & AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS)) | |
13413 | *cost += COSTS_N_INSNS (1); | |
13414 | } | |
4745e701 JG |
13415 | return true; |
13416 | } | |
13417 | ||
e548c9df | 13418 | *cost += rtx_cost (op1, mode, PLUS, 1, speed); |
23cb6618 | 13419 | |
7cc2145f | 13420 | /* Look for ADD (extended register). */ |
7de23b8c AC |
13421 | if (is_a <scalar_int_mode> (mode) |
13422 | && aarch64_rtx_arith_op_extract_p (op0)) | |
7cc2145f JG |
13423 | { |
13424 | if (speed) | |
2533c820 | 13425 | *cost += extra_cost->alu.extend_arith; |
7cc2145f | 13426 | |
b10f1009 | 13427 | op0 = aarch64_strip_extend (op0, true); |
e47c4031 | 13428 | *cost += rtx_cost (op0, VOIDmode, |
e548c9df | 13429 | (enum rtx_code) GET_CODE (op0), 0, speed); |
7cc2145f JG |
13430 | return true; |
13431 | } | |
13432 | ||
4745e701 JG |
13433 | /* Strip any extend, leave shifts behind as we will |
13434 | cost them through mult_cost. */ | |
b10f1009 | 13435 | new_op0 = aarch64_strip_extend (op0, false); |
4745e701 JG |
13436 | |
13437 | if (GET_CODE (new_op0) == MULT | |
0a78ebe4 | 13438 | || aarch64_shift_p (GET_CODE (new_op0))) |
4745e701 JG |
13439 | { |
13440 | *cost += aarch64_rtx_mult_cost (new_op0, MULT, PLUS, | |
13441 | speed); | |
4745e701 JG |
13442 | return true; |
13443 | } | |
13444 | ||
e548c9df | 13445 | *cost += rtx_cost (new_op0, VOIDmode, PLUS, 0, speed); |
4745e701 JG |
13446 | |
13447 | if (speed) | |
13448 | { | |
b6875aac KV |
13449 | if (VECTOR_MODE_P (mode)) |
13450 | { | |
13451 | /* Vector ADD. */ | |
13452 | *cost += extra_cost->vect.alu; | |
13453 | } | |
13454 | else if (GET_MODE_CLASS (mode) == MODE_INT) | |
13455 | { | |
13456 | /* ADD. */ | |
13457 | *cost += extra_cost->alu.arith; | |
13458 | } | |
4745e701 | 13459 | else if (GET_MODE_CLASS (mode) == MODE_FLOAT) |
b6875aac KV |
13460 | { |
13461 | /* FADD. */ | |
13462 | *cost += extra_cost->fp[mode == DFmode].addsub; | |
13463 | } | |
4745e701 JG |
13464 | } |
13465 | return true; | |
13466 | } | |
43e9d192 | 13467 | |
18b42b2a KT |
13468 | case BSWAP: |
13469 | *cost = COSTS_N_INSNS (1); | |
13470 | ||
13471 | if (speed) | |
b6875aac KV |
13472 | { |
13473 | if (VECTOR_MODE_P (mode)) | |
13474 | *cost += extra_cost->vect.alu; | |
13475 | else | |
13476 | *cost += extra_cost->alu.rev; | |
13477 | } | |
18b42b2a KT |
13478 | return false; |
13479 | ||
43e9d192 | 13480 | case IOR: |
f7d5cf8d KT |
13481 | if (aarch_rev16_p (x)) |
13482 | { | |
13483 | *cost = COSTS_N_INSNS (1); | |
13484 | ||
b6875aac KV |
13485 | if (speed) |
13486 | { | |
13487 | if (VECTOR_MODE_P (mode)) | |
13488 | *cost += extra_cost->vect.alu; | |
13489 | else | |
13490 | *cost += extra_cost->alu.rev; | |
13491 | } | |
13492 | return true; | |
f7d5cf8d | 13493 | } |
fb0cb7fa KT |
13494 | |
13495 | if (aarch64_extr_rtx_p (x, &op0, &op1)) | |
13496 | { | |
e548c9df AM |
13497 | *cost += rtx_cost (op0, mode, IOR, 0, speed); |
13498 | *cost += rtx_cost (op1, mode, IOR, 1, speed); | |
fb0cb7fa KT |
13499 | if (speed) |
13500 | *cost += extra_cost->alu.shift; | |
13501 | ||
13502 | return true; | |
13503 | } | |
f7d5cf8d | 13504 | /* Fall through. */ |
43e9d192 IB |
13505 | case XOR: |
13506 | case AND: | |
13507 | cost_logic: | |
13508 | op0 = XEXP (x, 0); | |
13509 | op1 = XEXP (x, 1); | |
13510 | ||
b6875aac KV |
13511 | if (VECTOR_MODE_P (mode)) |
13512 | { | |
13513 | if (speed) | |
13514 | *cost += extra_cost->vect.alu; | |
13515 | return true; | |
13516 | } | |
13517 | ||
268c3b47 JG |
13518 | if (code == AND |
13519 | && GET_CODE (op0) == MULT | |
13520 | && CONST_INT_P (XEXP (op0, 1)) | |
13521 | && CONST_INT_P (op1) | |
13522 | && aarch64_uxt_size (exact_log2 (INTVAL (XEXP (op0, 1))), | |
13523 | INTVAL (op1)) != 0) | |
13524 | { | |
13525 | /* This is a UBFM/SBFM. */ | |
e548c9df | 13526 | *cost += rtx_cost (XEXP (op0, 0), mode, ZERO_EXTRACT, 0, speed); |
268c3b47 JG |
13527 | if (speed) |
13528 | *cost += extra_cost->alu.bfx; | |
13529 | return true; | |
13530 | } | |
13531 | ||
b4206259 | 13532 | if (is_int_mode (mode, &int_mode)) |
43e9d192 | 13533 | { |
8c83f71d | 13534 | if (CONST_INT_P (op1)) |
43e9d192 | 13535 | { |
8c83f71d KT |
13536 | /* We have a mask + shift version of a UBFIZ |
13537 | i.e. the *andim_ashift<mode>_bfiz pattern. */ | |
13538 | if (GET_CODE (op0) == ASHIFT | |
b4206259 RS |
13539 | && aarch64_mask_and_shift_for_ubfiz_p (int_mode, op1, |
13540 | XEXP (op0, 1))) | |
8c83f71d | 13541 | { |
b4206259 | 13542 | *cost += rtx_cost (XEXP (op0, 0), int_mode, |
8c83f71d KT |
13543 | (enum rtx_code) code, 0, speed); |
13544 | if (speed) | |
13545 | *cost += extra_cost->alu.bfx; | |
268c3b47 | 13546 | |
8c83f71d KT |
13547 | return true; |
13548 | } | |
b4206259 | 13549 | else if (aarch64_bitmask_imm (INTVAL (op1), int_mode)) |
8c83f71d KT |
13550 | { |
13551 | /* We possibly get the immediate for free, this is not | |
13552 | modelled. */ | |
b4206259 RS |
13553 | *cost += rtx_cost (op0, int_mode, |
13554 | (enum rtx_code) code, 0, speed); | |
8c83f71d KT |
13555 | if (speed) |
13556 | *cost += extra_cost->alu.logical; | |
268c3b47 | 13557 | |
8c83f71d KT |
13558 | return true; |
13559 | } | |
43e9d192 IB |
13560 | } |
13561 | else | |
13562 | { | |
268c3b47 JG |
13563 | rtx new_op0 = op0; |
13564 | ||
13565 | /* Handle ORN, EON, or BIC. */ | |
43e9d192 IB |
13566 | if (GET_CODE (op0) == NOT) |
13567 | op0 = XEXP (op0, 0); | |
268c3b47 JG |
13568 | |
13569 | new_op0 = aarch64_strip_shift (op0); | |
13570 | ||
13571 | /* If we had a shift on op0 then this is a logical-shift- | |
13572 | by-register/immediate operation. Otherwise, this is just | |
13573 | a logical operation. */ | |
13574 | if (speed) | |
13575 | { | |
13576 | if (new_op0 != op0) | |
13577 | { | |
13578 | /* Shift by immediate. */ | |
13579 | if (CONST_INT_P (XEXP (op0, 1))) | |
13580 | *cost += extra_cost->alu.log_shift; | |
13581 | else | |
13582 | *cost += extra_cost->alu.log_shift_reg; | |
13583 | } | |
13584 | else | |
13585 | *cost += extra_cost->alu.logical; | |
13586 | } | |
13587 | ||
13588 | /* In both cases we want to cost both operands. */ | |
b4206259 RS |
13589 | *cost += rtx_cost (new_op0, int_mode, (enum rtx_code) code, |
13590 | 0, speed); | |
13591 | *cost += rtx_cost (op1, int_mode, (enum rtx_code) code, | |
13592 | 1, speed); | |
268c3b47 JG |
13593 | |
13594 | return true; | |
43e9d192 | 13595 | } |
43e9d192 IB |
13596 | } |
13597 | return false; | |
13598 | ||
268c3b47 | 13599 | case NOT: |
6365da9e KT |
13600 | x = XEXP (x, 0); |
13601 | op0 = aarch64_strip_shift (x); | |
13602 | ||
b6875aac KV |
13603 | if (VECTOR_MODE_P (mode)) |
13604 | { | |
13605 | /* Vector NOT. */ | |
13606 | *cost += extra_cost->vect.alu; | |
13607 | return false; | |
13608 | } | |
13609 | ||
6365da9e KT |
13610 | /* MVN-shifted-reg. */ |
13611 | if (op0 != x) | |
13612 | { | |
e548c9df | 13613 | *cost += rtx_cost (op0, mode, (enum rtx_code) code, 0, speed); |
6365da9e KT |
13614 | |
13615 | if (speed) | |
13616 | *cost += extra_cost->alu.log_shift; | |
13617 | ||
13618 | return true; | |
13619 | } | |
13620 | /* EON can have two forms: (xor (not a) b) but also (not (xor a b)). | |
13621 | Handle the second form here taking care that 'a' in the above can | |
13622 | be a shift. */ | |
13623 | else if (GET_CODE (op0) == XOR) | |
13624 | { | |
13625 | rtx newop0 = XEXP (op0, 0); | |
13626 | rtx newop1 = XEXP (op0, 1); | |
13627 | rtx op0_stripped = aarch64_strip_shift (newop0); | |
13628 | ||
e548c9df AM |
13629 | *cost += rtx_cost (newop1, mode, (enum rtx_code) code, 1, speed); |
13630 | *cost += rtx_cost (op0_stripped, mode, XOR, 0, speed); | |
6365da9e KT |
13631 | |
13632 | if (speed) | |
13633 | { | |
13634 | if (op0_stripped != newop0) | |
13635 | *cost += extra_cost->alu.log_shift; | |
13636 | else | |
13637 | *cost += extra_cost->alu.logical; | |
13638 | } | |
13639 | ||
13640 | return true; | |
13641 | } | |
268c3b47 JG |
13642 | /* MVN. */ |
13643 | if (speed) | |
13644 | *cost += extra_cost->alu.logical; | |
13645 | ||
268c3b47 JG |
13646 | return false; |
13647 | ||
43e9d192 | 13648 | case ZERO_EXTEND: |
b1685e62 JG |
13649 | |
13650 | op0 = XEXP (x, 0); | |
13651 | /* If a value is written in SI mode, then zero extended to DI | |
13652 | mode, the operation will in general be free as a write to | |
13653 | a 'w' register implicitly zeroes the upper bits of an 'x' | |
13654 | register. However, if this is | |
13655 | ||
13656 | (set (reg) (zero_extend (reg))) | |
13657 | ||
13658 | we must cost the explicit register move. */ | |
13659 | if (mode == DImode | |
1d5c43db | 13660 | && GET_MODE (op0) == SImode) |
b1685e62 | 13661 | { |
e548c9df | 13662 | int op_cost = rtx_cost (op0, VOIDmode, ZERO_EXTEND, 0, speed); |
b1685e62 | 13663 | |
dde23f43 KM |
13664 | /* If OP_COST is non-zero, then the cost of the zero extend |
13665 | is effectively the cost of the inner operation. Otherwise | |
13666 | we have a MOV instruction and we take the cost from the MOV | |
13667 | itself. This is true independently of whether we are | |
13668 | optimizing for space or time. */ | |
13669 | if (op_cost) | |
b1685e62 JG |
13670 | *cost = op_cost; |
13671 | ||
13672 | return true; | |
13673 | } | |
e548c9df | 13674 | else if (MEM_P (op0)) |
43e9d192 | 13675 | { |
b1685e62 | 13676 | /* All loads can zero extend to any size for free. */ |
e548c9df | 13677 | *cost = rtx_cost (op0, VOIDmode, ZERO_EXTEND, param, speed); |
43e9d192 IB |
13678 | return true; |
13679 | } | |
b1685e62 | 13680 | |
283b6c85 KT |
13681 | op0 = aarch64_extend_bitfield_pattern_p (x); |
13682 | if (op0) | |
13683 | { | |
13684 | *cost += rtx_cost (op0, mode, ZERO_EXTEND, 0, speed); | |
13685 | if (speed) | |
13686 | *cost += extra_cost->alu.bfx; | |
13687 | return true; | |
13688 | } | |
13689 | ||
b1685e62 | 13690 | if (speed) |
b6875aac KV |
13691 | { |
13692 | if (VECTOR_MODE_P (mode)) | |
13693 | { | |
13694 | /* UMOV. */ | |
13695 | *cost += extra_cost->vect.alu; | |
13696 | } | |
13697 | else | |
13698 | { | |
63715e5e WD |
13699 | /* We generate an AND instead of UXTB/UXTH. */ |
13700 | *cost += extra_cost->alu.logical; | |
b6875aac KV |
13701 | } |
13702 | } | |
43e9d192 IB |
13703 | return false; |
13704 | ||
13705 | case SIGN_EXTEND: | |
b1685e62 | 13706 | if (MEM_P (XEXP (x, 0))) |
43e9d192 | 13707 | { |
b1685e62 JG |
13708 | /* LDRSH. */ |
13709 | if (speed) | |
13710 | { | |
13711 | rtx address = XEXP (XEXP (x, 0), 0); | |
13712 | *cost += extra_cost->ldst.load_sign_extend; | |
13713 | ||
13714 | *cost += | |
13715 | COSTS_N_INSNS (aarch64_address_cost (address, mode, | |
13716 | 0, speed)); | |
13717 | } | |
43e9d192 IB |
13718 | return true; |
13719 | } | |
b1685e62 | 13720 | |
283b6c85 KT |
13721 | op0 = aarch64_extend_bitfield_pattern_p (x); |
13722 | if (op0) | |
13723 | { | |
13724 | *cost += rtx_cost (op0, mode, SIGN_EXTEND, 0, speed); | |
13725 | if (speed) | |
13726 | *cost += extra_cost->alu.bfx; | |
13727 | return true; | |
13728 | } | |
13729 | ||
b1685e62 | 13730 | if (speed) |
b6875aac KV |
13731 | { |
13732 | if (VECTOR_MODE_P (mode)) | |
13733 | *cost += extra_cost->vect.alu; | |
13734 | else | |
13735 | *cost += extra_cost->alu.extend; | |
13736 | } | |
43e9d192 IB |
13737 | return false; |
13738 | ||
ba0cfa17 JG |
13739 | case ASHIFT: |
13740 | op0 = XEXP (x, 0); | |
13741 | op1 = XEXP (x, 1); | |
13742 | ||
13743 | if (CONST_INT_P (op1)) | |
13744 | { | |
ba0cfa17 | 13745 | if (speed) |
b6875aac KV |
13746 | { |
13747 | if (VECTOR_MODE_P (mode)) | |
13748 | { | |
13749 | /* Vector shift (immediate). */ | |
13750 | *cost += extra_cost->vect.alu; | |
13751 | } | |
13752 | else | |
13753 | { | |
13754 | /* LSL (immediate), UBMF, UBFIZ and friends. These are all | |
13755 | aliases. */ | |
13756 | *cost += extra_cost->alu.shift; | |
13757 | } | |
13758 | } | |
ba0cfa17 JG |
13759 | |
13760 | /* We can incorporate zero/sign extend for free. */ | |
13761 | if (GET_CODE (op0) == ZERO_EXTEND | |
13762 | || GET_CODE (op0) == SIGN_EXTEND) | |
13763 | op0 = XEXP (op0, 0); | |
13764 | ||
e548c9df | 13765 | *cost += rtx_cost (op0, VOIDmode, ASHIFT, 0, speed); |
ba0cfa17 JG |
13766 | return true; |
13767 | } | |
13768 | else | |
13769 | { | |
7813b280 | 13770 | if (VECTOR_MODE_P (mode)) |
b6875aac | 13771 | { |
7813b280 KT |
13772 | if (speed) |
13773 | /* Vector shift (register). */ | |
13774 | *cost += extra_cost->vect.alu; | |
13775 | } | |
13776 | else | |
13777 | { | |
13778 | if (speed) | |
13779 | /* LSLV. */ | |
13780 | *cost += extra_cost->alu.shift_reg; | |
13781 | ||
13782 | if (GET_CODE (op1) == AND && REG_P (XEXP (op1, 0)) | |
13783 | && CONST_INT_P (XEXP (op1, 1)) | |
6a70badb RS |
13784 | && known_eq (INTVAL (XEXP (op1, 1)), |
13785 | GET_MODE_BITSIZE (mode) - 1)) | |
b6875aac | 13786 | { |
7813b280 KT |
13787 | *cost += rtx_cost (op0, mode, (rtx_code) code, 0, speed); |
13788 | /* We already demanded XEXP (op1, 0) to be REG_P, so | |
13789 | don't recurse into it. */ | |
13790 | return true; | |
b6875aac KV |
13791 | } |
13792 | } | |
ba0cfa17 JG |
13793 | return false; /* All arguments need to be in registers. */ |
13794 | } | |
13795 | ||
43e9d192 | 13796 | case ROTATE: |
43e9d192 IB |
13797 | case ROTATERT: |
13798 | case LSHIFTRT: | |
43e9d192 | 13799 | case ASHIFTRT: |
ba0cfa17 JG |
13800 | op0 = XEXP (x, 0); |
13801 | op1 = XEXP (x, 1); | |
43e9d192 | 13802 | |
ba0cfa17 JG |
13803 | if (CONST_INT_P (op1)) |
13804 | { | |
13805 | /* ASR (immediate) and friends. */ | |
13806 | if (speed) | |
b6875aac KV |
13807 | { |
13808 | if (VECTOR_MODE_P (mode)) | |
13809 | *cost += extra_cost->vect.alu; | |
13810 | else | |
13811 | *cost += extra_cost->alu.shift; | |
13812 | } | |
43e9d192 | 13813 | |
e548c9df | 13814 | *cost += rtx_cost (op0, mode, (enum rtx_code) code, 0, speed); |
ba0cfa17 JG |
13815 | return true; |
13816 | } | |
13817 | else | |
13818 | { | |
7813b280 | 13819 | if (VECTOR_MODE_P (mode)) |
b6875aac | 13820 | { |
7813b280 KT |
13821 | if (speed) |
13822 | /* Vector shift (register). */ | |
b6875aac | 13823 | *cost += extra_cost->vect.alu; |
7813b280 KT |
13824 | } |
13825 | else | |
13826 | { | |
13827 | if (speed) | |
13828 | /* ASR (register) and friends. */ | |
b6875aac | 13829 | *cost += extra_cost->alu.shift_reg; |
7813b280 KT |
13830 | |
13831 | if (GET_CODE (op1) == AND && REG_P (XEXP (op1, 0)) | |
13832 | && CONST_INT_P (XEXP (op1, 1)) | |
6a70badb RS |
13833 | && known_eq (INTVAL (XEXP (op1, 1)), |
13834 | GET_MODE_BITSIZE (mode) - 1)) | |
7813b280 KT |
13835 | { |
13836 | *cost += rtx_cost (op0, mode, (rtx_code) code, 0, speed); | |
13837 | /* We already demanded XEXP (op1, 0) to be REG_P, so | |
13838 | don't recurse into it. */ | |
13839 | return true; | |
13840 | } | |
b6875aac | 13841 | } |
ba0cfa17 JG |
13842 | return false; /* All arguments need to be in registers. */ |
13843 | } | |
43e9d192 | 13844 | |
909734be JG |
13845 | case SYMBOL_REF: |
13846 | ||
1b1e81f8 JW |
13847 | if (aarch64_cmodel == AARCH64_CMODEL_LARGE |
13848 | || aarch64_cmodel == AARCH64_CMODEL_SMALL_SPIC) | |
909734be JG |
13849 | { |
13850 | /* LDR. */ | |
13851 | if (speed) | |
13852 | *cost += extra_cost->ldst.load; | |
13853 | } | |
13854 | else if (aarch64_cmodel == AARCH64_CMODEL_SMALL | |
13855 | || aarch64_cmodel == AARCH64_CMODEL_SMALL_PIC) | |
13856 | { | |
13857 | /* ADRP, followed by ADD. */ | |
13858 | *cost += COSTS_N_INSNS (1); | |
13859 | if (speed) | |
13860 | *cost += 2 * extra_cost->alu.arith; | |
13861 | } | |
13862 | else if (aarch64_cmodel == AARCH64_CMODEL_TINY | |
13863 | || aarch64_cmodel == AARCH64_CMODEL_TINY_PIC) | |
13864 | { | |
13865 | /* ADR. */ | |
13866 | if (speed) | |
13867 | *cost += extra_cost->alu.arith; | |
13868 | } | |
13869 | ||
13870 | if (flag_pic) | |
13871 | { | |
13872 | /* One extra load instruction, after accessing the GOT. */ | |
13873 | *cost += COSTS_N_INSNS (1); | |
13874 | if (speed) | |
13875 | *cost += extra_cost->ldst.load; | |
13876 | } | |
43e9d192 IB |
13877 | return true; |
13878 | ||
909734be | 13879 | case HIGH: |
43e9d192 | 13880 | case LO_SUM: |
909734be JG |
13881 | /* ADRP/ADD (immediate). */ |
13882 | if (speed) | |
13883 | *cost += extra_cost->alu.arith; | |
43e9d192 IB |
13884 | return true; |
13885 | ||
13886 | case ZERO_EXTRACT: | |
13887 | case SIGN_EXTRACT: | |
7cc2145f JG |
13888 | /* UBFX/SBFX. */ |
13889 | if (speed) | |
b6875aac KV |
13890 | { |
13891 | if (VECTOR_MODE_P (mode)) | |
13892 | *cost += extra_cost->vect.alu; | |
13893 | else | |
13894 | *cost += extra_cost->alu.bfx; | |
13895 | } | |
7cc2145f JG |
13896 | |
13897 | /* We can trust that the immediates used will be correct (there | |
13898 | are no by-register forms), so we need only cost op0. */ | |
e548c9df | 13899 | *cost += rtx_cost (XEXP (x, 0), VOIDmode, (enum rtx_code) code, 0, speed); |
43e9d192 IB |
13900 | return true; |
13901 | ||
13902 | case MULT: | |
4745e701 JG |
13903 | *cost += aarch64_rtx_mult_cost (x, MULT, 0, speed); |
13904 | /* aarch64_rtx_mult_cost always handles recursion to its | |
13905 | operands. */ | |
13906 | return true; | |
43e9d192 IB |
13907 | |
13908 | case MOD: | |
4f58fe36 KT |
13909 | /* We can expand signed mod by power of 2 using a NEGS, two parallel |
13910 | ANDs and a CSNEG. Assume here that CSNEG is the same as the cost of | |
13911 | an unconditional negate. This case should only ever be reached through | |
13912 | the set_smod_pow2_cheap check in expmed.c. */ | |
13913 | if (CONST_INT_P (XEXP (x, 1)) | |
13914 | && exact_log2 (INTVAL (XEXP (x, 1))) > 0 | |
13915 | && (mode == SImode || mode == DImode)) | |
13916 | { | |
13917 | /* We expand to 4 instructions. Reset the baseline. */ | |
13918 | *cost = COSTS_N_INSNS (4); | |
13919 | ||
13920 | if (speed) | |
13921 | *cost += 2 * extra_cost->alu.logical | |
13922 | + 2 * extra_cost->alu.arith; | |
13923 | ||
13924 | return true; | |
13925 | } | |
13926 | ||
13927 | /* Fall-through. */ | |
43e9d192 | 13928 | case UMOD: |
43e9d192 IB |
13929 | if (speed) |
13930 | { | |
cb9ac430 | 13931 | /* Slighly prefer UMOD over SMOD. */ |
b6875aac KV |
13932 | if (VECTOR_MODE_P (mode)) |
13933 | *cost += extra_cost->vect.alu; | |
e548c9df AM |
13934 | else if (GET_MODE_CLASS (mode) == MODE_INT) |
13935 | *cost += (extra_cost->mult[mode == DImode].add | |
cb9ac430 TC |
13936 | + extra_cost->mult[mode == DImode].idiv |
13937 | + (code == MOD ? 1 : 0)); | |
43e9d192 IB |
13938 | } |
13939 | return false; /* All arguments need to be in registers. */ | |
13940 | ||
13941 | case DIV: | |
13942 | case UDIV: | |
4105fe38 | 13943 | case SQRT: |
43e9d192 IB |
13944 | if (speed) |
13945 | { | |
b6875aac KV |
13946 | if (VECTOR_MODE_P (mode)) |
13947 | *cost += extra_cost->vect.alu; | |
13948 | else if (GET_MODE_CLASS (mode) == MODE_INT) | |
4105fe38 JG |
13949 | /* There is no integer SQRT, so only DIV and UDIV can get |
13950 | here. */ | |
cb9ac430 TC |
13951 | *cost += (extra_cost->mult[mode == DImode].idiv |
13952 | /* Slighly prefer UDIV over SDIV. */ | |
13953 | + (code == DIV ? 1 : 0)); | |
4105fe38 JG |
13954 | else |
13955 | *cost += extra_cost->fp[mode == DFmode].div; | |
43e9d192 IB |
13956 | } |
13957 | return false; /* All arguments need to be in registers. */ | |
13958 | ||
a8eecd00 | 13959 | case IF_THEN_ELSE: |
2d5ffe46 AP |
13960 | return aarch64_if_then_else_costs (XEXP (x, 0), XEXP (x, 1), |
13961 | XEXP (x, 2), cost, speed); | |
a8eecd00 JG |
13962 | |
13963 | case EQ: | |
13964 | case NE: | |
13965 | case GT: | |
13966 | case GTU: | |
13967 | case LT: | |
13968 | case LTU: | |
13969 | case GE: | |
13970 | case GEU: | |
13971 | case LE: | |
13972 | case LEU: | |
13973 | ||
13974 | return false; /* All arguments must be in registers. */ | |
13975 | ||
b292109f JG |
13976 | case FMA: |
13977 | op0 = XEXP (x, 0); | |
13978 | op1 = XEXP (x, 1); | |
13979 | op2 = XEXP (x, 2); | |
13980 | ||
13981 | if (speed) | |
b6875aac KV |
13982 | { |
13983 | if (VECTOR_MODE_P (mode)) | |
13984 | *cost += extra_cost->vect.alu; | |
13985 | else | |
13986 | *cost += extra_cost->fp[mode == DFmode].fma; | |
13987 | } | |
b292109f JG |
13988 | |
13989 | /* FMSUB, FNMADD, and FNMSUB are free. */ | |
13990 | if (GET_CODE (op0) == NEG) | |
13991 | op0 = XEXP (op0, 0); | |
13992 | ||
13993 | if (GET_CODE (op2) == NEG) | |
13994 | op2 = XEXP (op2, 0); | |
13995 | ||
13996 | /* aarch64_fnma4_elt_to_64v2df has the NEG as operand 1, | |
13997 | and the by-element operand as operand 0. */ | |
13998 | if (GET_CODE (op1) == NEG) | |
13999 | op1 = XEXP (op1, 0); | |
14000 | ||
14001 | /* Catch vector-by-element operations. The by-element operand can | |
14002 | either be (vec_duplicate (vec_select (x))) or just | |
14003 | (vec_select (x)), depending on whether we are multiplying by | |
14004 | a vector or a scalar. | |
14005 | ||
14006 | Canonicalization is not very good in these cases, FMA4 will put the | |
14007 | by-element operand as operand 0, FNMA4 will have it as operand 1. */ | |
14008 | if (GET_CODE (op0) == VEC_DUPLICATE) | |
14009 | op0 = XEXP (op0, 0); | |
14010 | else if (GET_CODE (op1) == VEC_DUPLICATE) | |
14011 | op1 = XEXP (op1, 0); | |
14012 | ||
14013 | if (GET_CODE (op0) == VEC_SELECT) | |
14014 | op0 = XEXP (op0, 0); | |
14015 | else if (GET_CODE (op1) == VEC_SELECT) | |
14016 | op1 = XEXP (op1, 0); | |
14017 | ||
14018 | /* If the remaining parameters are not registers, | |
14019 | get the cost to put them into registers. */ | |
e548c9df AM |
14020 | *cost += rtx_cost (op0, mode, FMA, 0, speed); |
14021 | *cost += rtx_cost (op1, mode, FMA, 1, speed); | |
14022 | *cost += rtx_cost (op2, mode, FMA, 2, speed); | |
b292109f JG |
14023 | return true; |
14024 | ||
5e2a765b KT |
14025 | case FLOAT: |
14026 | case UNSIGNED_FLOAT: | |
14027 | if (speed) | |
14028 | *cost += extra_cost->fp[mode == DFmode].fromint; | |
14029 | return false; | |
14030 | ||
b292109f JG |
14031 | case FLOAT_EXTEND: |
14032 | if (speed) | |
b6875aac KV |
14033 | { |
14034 | if (VECTOR_MODE_P (mode)) | |
14035 | { | |
14036 | /*Vector truncate. */ | |
14037 | *cost += extra_cost->vect.alu; | |
14038 | } | |
14039 | else | |
14040 | *cost += extra_cost->fp[mode == DFmode].widen; | |
14041 | } | |
b292109f JG |
14042 | return false; |
14043 | ||
14044 | case FLOAT_TRUNCATE: | |
14045 | if (speed) | |
b6875aac KV |
14046 | { |
14047 | if (VECTOR_MODE_P (mode)) | |
14048 | { | |
14049 | /*Vector conversion. */ | |
14050 | *cost += extra_cost->vect.alu; | |
14051 | } | |
14052 | else | |
14053 | *cost += extra_cost->fp[mode == DFmode].narrow; | |
14054 | } | |
b292109f JG |
14055 | return false; |
14056 | ||
61263118 KT |
14057 | case FIX: |
14058 | case UNSIGNED_FIX: | |
14059 | x = XEXP (x, 0); | |
14060 | /* Strip the rounding part. They will all be implemented | |
14061 | by the fcvt* family of instructions anyway. */ | |
14062 | if (GET_CODE (x) == UNSPEC) | |
14063 | { | |
14064 | unsigned int uns_code = XINT (x, 1); | |
14065 | ||
14066 | if (uns_code == UNSPEC_FRINTA | |
14067 | || uns_code == UNSPEC_FRINTM | |
14068 | || uns_code == UNSPEC_FRINTN | |
14069 | || uns_code == UNSPEC_FRINTP | |
14070 | || uns_code == UNSPEC_FRINTZ) | |
14071 | x = XVECEXP (x, 0, 0); | |
14072 | } | |
14073 | ||
14074 | if (speed) | |
b6875aac KV |
14075 | { |
14076 | if (VECTOR_MODE_P (mode)) | |
14077 | *cost += extra_cost->vect.alu; | |
14078 | else | |
14079 | *cost += extra_cost->fp[GET_MODE (x) == DFmode].toint; | |
14080 | } | |
39252973 KT |
14081 | |
14082 | /* We can combine fmul by a power of 2 followed by a fcvt into a single | |
14083 | fixed-point fcvt. */ | |
14084 | if (GET_CODE (x) == MULT | |
14085 | && ((VECTOR_MODE_P (mode) | |
14086 | && aarch64_vec_fpconst_pow_of_2 (XEXP (x, 1)) > 0) | |
14087 | || aarch64_fpconst_pow_of_2 (XEXP (x, 1)) > 0)) | |
14088 | { | |
14089 | *cost += rtx_cost (XEXP (x, 0), VOIDmode, (rtx_code) code, | |
14090 | 0, speed); | |
14091 | return true; | |
14092 | } | |
14093 | ||
e548c9df | 14094 | *cost += rtx_cost (x, VOIDmode, (enum rtx_code) code, 0, speed); |
61263118 KT |
14095 | return true; |
14096 | ||
b292109f | 14097 | case ABS: |
b6875aac KV |
14098 | if (VECTOR_MODE_P (mode)) |
14099 | { | |
14100 | /* ABS (vector). */ | |
14101 | if (speed) | |
14102 | *cost += extra_cost->vect.alu; | |
14103 | } | |
14104 | else if (GET_MODE_CLASS (mode) == MODE_FLOAT) | |
b292109f | 14105 | { |
19261b99 KT |
14106 | op0 = XEXP (x, 0); |
14107 | ||
14108 | /* FABD, which is analogous to FADD. */ | |
14109 | if (GET_CODE (op0) == MINUS) | |
14110 | { | |
e548c9df AM |
14111 | *cost += rtx_cost (XEXP (op0, 0), mode, MINUS, 0, speed); |
14112 | *cost += rtx_cost (XEXP (op0, 1), mode, MINUS, 1, speed); | |
19261b99 KT |
14113 | if (speed) |
14114 | *cost += extra_cost->fp[mode == DFmode].addsub; | |
14115 | ||
14116 | return true; | |
14117 | } | |
14118 | /* Simple FABS is analogous to FNEG. */ | |
b292109f JG |
14119 | if (speed) |
14120 | *cost += extra_cost->fp[mode == DFmode].neg; | |
14121 | } | |
14122 | else | |
14123 | { | |
14124 | /* Integer ABS will either be split to | |
14125 | two arithmetic instructions, or will be an ABS | |
14126 | (scalar), which we don't model. */ | |
14127 | *cost = COSTS_N_INSNS (2); | |
14128 | if (speed) | |
14129 | *cost += 2 * extra_cost->alu.arith; | |
14130 | } | |
14131 | return false; | |
14132 | ||
14133 | case SMAX: | |
14134 | case SMIN: | |
14135 | if (speed) | |
14136 | { | |
b6875aac KV |
14137 | if (VECTOR_MODE_P (mode)) |
14138 | *cost += extra_cost->vect.alu; | |
14139 | else | |
14140 | { | |
14141 | /* FMAXNM/FMINNM/FMAX/FMIN. | |
14142 | TODO: This may not be accurate for all implementations, but | |
14143 | we do not model this in the cost tables. */ | |
14144 | *cost += extra_cost->fp[mode == DFmode].addsub; | |
14145 | } | |
b292109f JG |
14146 | } |
14147 | return false; | |
14148 | ||
61263118 KT |
14149 | case UNSPEC: |
14150 | /* The floating point round to integer frint* instructions. */ | |
14151 | if (aarch64_frint_unspec_p (XINT (x, 1))) | |
14152 | { | |
14153 | if (speed) | |
14154 | *cost += extra_cost->fp[mode == DFmode].roundint; | |
14155 | ||
14156 | return false; | |
14157 | } | |
781aeb73 KT |
14158 | |
14159 | if (XINT (x, 1) == UNSPEC_RBIT) | |
14160 | { | |
14161 | if (speed) | |
14162 | *cost += extra_cost->alu.rev; | |
14163 | ||
14164 | return false; | |
14165 | } | |
61263118 KT |
14166 | break; |
14167 | ||
fb620c4a JG |
14168 | case TRUNCATE: |
14169 | ||
14170 | /* Decompose <su>muldi3_highpart. */ | |
14171 | if (/* (truncate:DI */ | |
14172 | mode == DImode | |
14173 | /* (lshiftrt:TI */ | |
14174 | && GET_MODE (XEXP (x, 0)) == TImode | |
14175 | && GET_CODE (XEXP (x, 0)) == LSHIFTRT | |
14176 | /* (mult:TI */ | |
14177 | && GET_CODE (XEXP (XEXP (x, 0), 0)) == MULT | |
14178 | /* (ANY_EXTEND:TI (reg:DI)) | |
14179 | (ANY_EXTEND:TI (reg:DI))) */ | |
14180 | && ((GET_CODE (XEXP (XEXP (XEXP (x, 0), 0), 0)) == ZERO_EXTEND | |
14181 | && GET_CODE (XEXP (XEXP (XEXP (x, 0), 0), 1)) == ZERO_EXTEND) | |
14182 | || (GET_CODE (XEXP (XEXP (XEXP (x, 0), 0), 0)) == SIGN_EXTEND | |
14183 | && GET_CODE (XEXP (XEXP (XEXP (x, 0), 0), 1)) == SIGN_EXTEND)) | |
14184 | && GET_MODE (XEXP (XEXP (XEXP (XEXP (x, 0), 0), 0), 0)) == DImode | |
14185 | && GET_MODE (XEXP (XEXP (XEXP (XEXP (x, 0), 0), 1), 0)) == DImode | |
14186 | /* (const_int 64) */ | |
14187 | && CONST_INT_P (XEXP (XEXP (x, 0), 1)) | |
14188 | && UINTVAL (XEXP (XEXP (x, 0), 1)) == 64) | |
14189 | { | |
14190 | /* UMULH/SMULH. */ | |
14191 | if (speed) | |
14192 | *cost += extra_cost->mult[mode == DImode].extend; | |
e548c9df AM |
14193 | *cost += rtx_cost (XEXP (XEXP (XEXP (XEXP (x, 0), 0), 0), 0), |
14194 | mode, MULT, 0, speed); | |
14195 | *cost += rtx_cost (XEXP (XEXP (XEXP (XEXP (x, 0), 0), 1), 0), | |
14196 | mode, MULT, 1, speed); | |
fb620c4a JG |
14197 | return true; |
14198 | } | |
1d5c43db TC |
14199 | break; |
14200 | case CONST_VECTOR: | |
14201 | { | |
14202 | /* Load using MOVI/MVNI. */ | |
14203 | if (aarch64_simd_valid_immediate (x, NULL)) | |
14204 | *cost = extra_cost->vect.movi; | |
14205 | else /* Load using constant pool. */ | |
14206 | *cost = extra_cost->ldst.load; | |
14207 | break; | |
14208 | } | |
14209 | case VEC_CONCAT: | |
14210 | /* depending on the operation, either DUP or INS. | |
14211 | For now, keep default costing. */ | |
14212 | break; | |
14213 | case VEC_DUPLICATE: | |
14214 | /* Load using a DUP. */ | |
14215 | *cost = extra_cost->vect.dup; | |
14216 | return false; | |
14217 | case VEC_SELECT: | |
14218 | { | |
14219 | rtx op0 = XEXP (x, 0); | |
14220 | *cost = rtx_cost (op0, GET_MODE (op0), VEC_SELECT, 0, speed); | |
fb620c4a | 14221 | |
1d5c43db TC |
14222 | /* cost subreg of 0 as free, otherwise as DUP */ |
14223 | rtx op1 = XEXP (x, 1); | |
14224 | if (vec_series_lowpart_p (mode, GET_MODE (op1), op1)) | |
14225 | ; | |
14226 | else if (vec_series_highpart_p (mode, GET_MODE (op1), op1)) | |
14227 | *cost = extra_cost->vect.dup; | |
14228 | else | |
14229 | *cost = extra_cost->vect.extract; | |
14230 | return true; | |
14231 | } | |
43e9d192 | 14232 | default: |
61263118 | 14233 | break; |
43e9d192 | 14234 | } |
61263118 | 14235 | |
c10e3d7f AP |
14236 | if (dump_file |
14237 | && flag_aarch64_verbose_cost) | |
61263118 KT |
14238 | fprintf (dump_file, |
14239 | "\nFailed to cost RTX. Assuming default cost.\n"); | |
14240 | ||
14241 | return true; | |
43e9d192 IB |
14242 | } |
14243 | ||
0ee859b5 JG |
14244 | /* Wrapper around aarch64_rtx_costs, dumps the partial, or total cost |
14245 | calculated for X. This cost is stored in *COST. Returns true | |
14246 | if the total cost of X was calculated. */ | |
14247 | static bool | |
e548c9df | 14248 | aarch64_rtx_costs_wrapper (rtx x, machine_mode mode, int outer, |
0ee859b5 JG |
14249 | int param, int *cost, bool speed) |
14250 | { | |
e548c9df | 14251 | bool result = aarch64_rtx_costs (x, mode, outer, param, cost, speed); |
0ee859b5 | 14252 | |
c10e3d7f AP |
14253 | if (dump_file |
14254 | && flag_aarch64_verbose_cost) | |
0ee859b5 JG |
14255 | { |
14256 | print_rtl_single (dump_file, x); | |
14257 | fprintf (dump_file, "\n%s cost: %d (%s)\n", | |
14258 | speed ? "Hot" : "Cold", | |
14259 | *cost, result ? "final" : "partial"); | |
14260 | } | |
14261 | ||
14262 | return result; | |
14263 | } | |
14264 | ||
43e9d192 | 14265 | static int |
ef4bddc2 | 14266 | aarch64_register_move_cost (machine_mode mode, |
8a3a7e67 | 14267 | reg_class_t from_i, reg_class_t to_i) |
43e9d192 | 14268 | { |
8a3a7e67 RH |
14269 | enum reg_class from = (enum reg_class) from_i; |
14270 | enum reg_class to = (enum reg_class) to_i; | |
43e9d192 | 14271 | const struct cpu_regmove_cost *regmove_cost |
b175b679 | 14272 | = aarch64_tune_params.regmove_cost; |
43e9d192 | 14273 | |
3be07662 | 14274 | /* Caller save and pointer regs are equivalent to GENERAL_REGS. */ |
96b7f495 MM |
14275 | if (to == TAILCALL_ADDR_REGS || to == POINTER_REGS |
14276 | || to == STUB_REGS) | |
3be07662 WD |
14277 | to = GENERAL_REGS; |
14278 | ||
96b7f495 MM |
14279 | if (from == TAILCALL_ADDR_REGS || from == POINTER_REGS |
14280 | || from == STUB_REGS) | |
3be07662 WD |
14281 | from = GENERAL_REGS; |
14282 | ||
183bfdaf RS |
14283 | /* Make RDFFR very expensive. In particular, if we know that the FFR |
14284 | contains a PTRUE (e.g. after a SETFFR), we must never use RDFFR | |
14285 | as a way of obtaining a PTRUE. */ | |
14286 | if (GET_MODE_CLASS (mode) == MODE_VECTOR_BOOL | |
14287 | && hard_reg_set_subset_p (reg_class_contents[from_i], | |
14288 | reg_class_contents[FFR_REGS])) | |
14289 | return 80; | |
14290 | ||
6ee70f81 AP |
14291 | /* Moving between GPR and stack cost is the same as GP2GP. */ |
14292 | if ((from == GENERAL_REGS && to == STACK_REG) | |
14293 | || (to == GENERAL_REGS && from == STACK_REG)) | |
14294 | return regmove_cost->GP2GP; | |
14295 | ||
14296 | /* To/From the stack register, we move via the gprs. */ | |
14297 | if (to == STACK_REG || from == STACK_REG) | |
14298 | return aarch64_register_move_cost (mode, from, GENERAL_REGS) | |
14299 | + aarch64_register_move_cost (mode, GENERAL_REGS, to); | |
14300 | ||
6a70badb | 14301 | if (known_eq (GET_MODE_SIZE (mode), 16)) |
8919453c WD |
14302 | { |
14303 | /* 128-bit operations on general registers require 2 instructions. */ | |
14304 | if (from == GENERAL_REGS && to == GENERAL_REGS) | |
14305 | return regmove_cost->GP2GP * 2; | |
14306 | else if (from == GENERAL_REGS) | |
14307 | return regmove_cost->GP2FP * 2; | |
14308 | else if (to == GENERAL_REGS) | |
14309 | return regmove_cost->FP2GP * 2; | |
14310 | ||
14311 | /* When AdvSIMD instructions are disabled it is not possible to move | |
14312 | a 128-bit value directly between Q registers. This is handled in | |
14313 | secondary reload. A general register is used as a scratch to move | |
14314 | the upper DI value and the lower DI value is moved directly, | |
14315 | hence the cost is the sum of three moves. */ | |
14316 | if (! TARGET_SIMD) | |
14317 | return regmove_cost->GP2FP + regmove_cost->FP2GP + regmove_cost->FP2FP; | |
14318 | ||
14319 | return regmove_cost->FP2FP; | |
14320 | } | |
14321 | ||
43e9d192 IB |
14322 | if (from == GENERAL_REGS && to == GENERAL_REGS) |
14323 | return regmove_cost->GP2GP; | |
14324 | else if (from == GENERAL_REGS) | |
14325 | return regmove_cost->GP2FP; | |
14326 | else if (to == GENERAL_REGS) | |
14327 | return regmove_cost->FP2GP; | |
14328 | ||
43e9d192 IB |
14329 | return regmove_cost->FP2FP; |
14330 | } | |
14331 | ||
14332 | static int | |
ef4bddc2 | 14333 | aarch64_memory_move_cost (machine_mode mode ATTRIBUTE_UNUSED, |
43e9d192 IB |
14334 | reg_class_t rclass ATTRIBUTE_UNUSED, |
14335 | bool in ATTRIBUTE_UNUSED) | |
14336 | { | |
b175b679 | 14337 | return aarch64_tune_params.memmov_cost; |
43e9d192 IB |
14338 | } |
14339 | ||
6d4d616a RS |
14340 | /* Implement TARGET_INIT_BUILTINS. */ |
14341 | static void | |
14342 | aarch64_init_builtins () | |
14343 | { | |
14344 | aarch64_general_init_builtins (); | |
624d0f07 | 14345 | aarch64_sve::init_builtins (); |
f9d4544d MR |
14346 | #ifdef SUBTARGET_INIT_BUILTINS |
14347 | SUBTARGET_INIT_BUILTINS; | |
14348 | #endif | |
6d4d616a RS |
14349 | } |
14350 | ||
14351 | /* Implement TARGET_FOLD_BUILTIN. */ | |
14352 | static tree | |
14353 | aarch64_fold_builtin (tree fndecl, int nargs, tree *args, bool) | |
14354 | { | |
14355 | unsigned int code = DECL_MD_FUNCTION_CODE (fndecl); | |
14356 | unsigned int subcode = code >> AARCH64_BUILTIN_SHIFT; | |
14357 | tree type = TREE_TYPE (TREE_TYPE (fndecl)); | |
14358 | switch (code & AARCH64_BUILTIN_CLASS) | |
14359 | { | |
14360 | case AARCH64_BUILTIN_GENERAL: | |
14361 | return aarch64_general_fold_builtin (subcode, type, nargs, args); | |
624d0f07 RS |
14362 | |
14363 | case AARCH64_BUILTIN_SVE: | |
14364 | return NULL_TREE; | |
6d4d616a RS |
14365 | } |
14366 | gcc_unreachable (); | |
14367 | } | |
14368 | ||
14369 | /* Implement TARGET_GIMPLE_FOLD_BUILTIN. */ | |
14370 | static bool | |
14371 | aarch64_gimple_fold_builtin (gimple_stmt_iterator *gsi) | |
14372 | { | |
14373 | gcall *stmt = as_a <gcall *> (gsi_stmt (*gsi)); | |
14374 | tree fndecl = gimple_call_fndecl (stmt); | |
14375 | unsigned int code = DECL_MD_FUNCTION_CODE (fndecl); | |
14376 | unsigned int subcode = code >> AARCH64_BUILTIN_SHIFT; | |
14377 | gimple *new_stmt = NULL; | |
14378 | switch (code & AARCH64_BUILTIN_CLASS) | |
14379 | { | |
14380 | case AARCH64_BUILTIN_GENERAL: | |
ad44c6a5 | 14381 | new_stmt = aarch64_general_gimple_fold_builtin (subcode, stmt, gsi); |
6d4d616a | 14382 | break; |
624d0f07 RS |
14383 | |
14384 | case AARCH64_BUILTIN_SVE: | |
14385 | new_stmt = aarch64_sve::gimple_fold_builtin (subcode, gsi, stmt); | |
14386 | break; | |
6d4d616a RS |
14387 | } |
14388 | ||
14389 | if (!new_stmt) | |
14390 | return false; | |
14391 | ||
14392 | gsi_replace (gsi, new_stmt, true); | |
14393 | return true; | |
14394 | } | |
14395 | ||
14396 | /* Implement TARGET_EXPAND_BUILTIN. */ | |
14397 | static rtx | |
c5dc215d | 14398 | aarch64_expand_builtin (tree exp, rtx target, rtx, machine_mode, int ignore) |
6d4d616a RS |
14399 | { |
14400 | tree fndecl = TREE_OPERAND (CALL_EXPR_FN (exp), 0); | |
14401 | unsigned int code = DECL_MD_FUNCTION_CODE (fndecl); | |
14402 | unsigned int subcode = code >> AARCH64_BUILTIN_SHIFT; | |
14403 | switch (code & AARCH64_BUILTIN_CLASS) | |
14404 | { | |
14405 | case AARCH64_BUILTIN_GENERAL: | |
c5dc215d | 14406 | return aarch64_general_expand_builtin (subcode, exp, target, ignore); |
624d0f07 RS |
14407 | |
14408 | case AARCH64_BUILTIN_SVE: | |
14409 | return aarch64_sve::expand_builtin (subcode, exp, target); | |
6d4d616a RS |
14410 | } |
14411 | gcc_unreachable (); | |
14412 | } | |
14413 | ||
14414 | /* Implement TARGET_BUILTIN_DECL. */ | |
14415 | static tree | |
14416 | aarch64_builtin_decl (unsigned int code, bool initialize_p) | |
14417 | { | |
14418 | unsigned int subcode = code >> AARCH64_BUILTIN_SHIFT; | |
14419 | switch (code & AARCH64_BUILTIN_CLASS) | |
14420 | { | |
14421 | case AARCH64_BUILTIN_GENERAL: | |
14422 | return aarch64_general_builtin_decl (subcode, initialize_p); | |
624d0f07 RS |
14423 | |
14424 | case AARCH64_BUILTIN_SVE: | |
14425 | return aarch64_sve::builtin_decl (subcode, initialize_p); | |
6d4d616a RS |
14426 | } |
14427 | gcc_unreachable (); | |
14428 | } | |
14429 | ||
0c30e0f3 EM |
14430 | /* Return true if it is safe and beneficial to use the approximate rsqrt optabs |
14431 | to optimize 1.0/sqrt. */ | |
ee62a5a6 RS |
14432 | |
14433 | static bool | |
9acc9cbe | 14434 | use_rsqrt_p (machine_mode mode) |
ee62a5a6 RS |
14435 | { |
14436 | return (!flag_trapping_math | |
14437 | && flag_unsafe_math_optimizations | |
9acc9cbe EM |
14438 | && ((aarch64_tune_params.approx_modes->recip_sqrt |
14439 | & AARCH64_APPROX_MODE (mode)) | |
1a33079e | 14440 | || flag_mrecip_low_precision_sqrt)); |
ee62a5a6 RS |
14441 | } |
14442 | ||
0c30e0f3 EM |
14443 | /* Function to decide when to use the approximate reciprocal square root |
14444 | builtin. */ | |
a6fc00da BH |
14445 | |
14446 | static tree | |
ee62a5a6 | 14447 | aarch64_builtin_reciprocal (tree fndecl) |
a6fc00da | 14448 | { |
9acc9cbe EM |
14449 | machine_mode mode = TYPE_MODE (TREE_TYPE (fndecl)); |
14450 | ||
14451 | if (!use_rsqrt_p (mode)) | |
a6fc00da | 14452 | return NULL_TREE; |
6d4d616a RS |
14453 | unsigned int code = DECL_MD_FUNCTION_CODE (fndecl); |
14454 | unsigned int subcode = code >> AARCH64_BUILTIN_SHIFT; | |
14455 | switch (code & AARCH64_BUILTIN_CLASS) | |
14456 | { | |
14457 | case AARCH64_BUILTIN_GENERAL: | |
14458 | return aarch64_general_builtin_rsqrt (subcode); | |
624d0f07 RS |
14459 | |
14460 | case AARCH64_BUILTIN_SVE: | |
14461 | return NULL_TREE; | |
6d4d616a RS |
14462 | } |
14463 | gcc_unreachable (); | |
a6fc00da BH |
14464 | } |
14465 | ||
04f307cb RS |
14466 | /* Emit code to perform the floating-point operation: |
14467 | ||
14468 | DST = SRC1 * SRC2 | |
14469 | ||
14470 | where all three operands are already known to be registers. | |
14471 | If the operation is an SVE one, PTRUE is a suitable all-true | |
14472 | predicate. */ | |
14473 | ||
14474 | static void | |
14475 | aarch64_emit_mult (rtx dst, rtx ptrue, rtx src1, rtx src2) | |
14476 | { | |
14477 | if (ptrue) | |
14478 | emit_insn (gen_aarch64_pred (UNSPEC_COND_FMUL, GET_MODE (dst), | |
14479 | dst, ptrue, src1, src2, | |
14480 | gen_int_mode (SVE_RELAXED_GP, SImode))); | |
14481 | else | |
14482 | emit_set_insn (dst, gen_rtx_MULT (GET_MODE (dst), src1, src2)); | |
14483 | } | |
14484 | ||
98daafa0 EM |
14485 | /* Emit instruction sequence to compute either the approximate square root |
14486 | or its approximate reciprocal, depending on the flag RECP, and return | |
14487 | whether the sequence was emitted or not. */ | |
a6fc00da | 14488 | |
98daafa0 EM |
14489 | bool |
14490 | aarch64_emit_approx_sqrt (rtx dst, rtx src, bool recp) | |
a6fc00da | 14491 | { |
98daafa0 | 14492 | machine_mode mode = GET_MODE (dst); |
daef0a8c JW |
14493 | |
14494 | if (GET_MODE_INNER (mode) == HFmode) | |
2e19adc8 RE |
14495 | { |
14496 | gcc_assert (!recp); | |
14497 | return false; | |
14498 | } | |
14499 | ||
2e19adc8 RE |
14500 | if (!recp) |
14501 | { | |
14502 | if (!(flag_mlow_precision_sqrt | |
14503 | || (aarch64_tune_params.approx_modes->sqrt | |
14504 | & AARCH64_APPROX_MODE (mode)))) | |
14505 | return false; | |
14506 | ||
902d28bd | 14507 | if (!flag_finite_math_only |
2e19adc8 RE |
14508 | || flag_trapping_math |
14509 | || !flag_unsafe_math_optimizations | |
14510 | || optimize_function_for_size_p (cfun)) | |
14511 | return false; | |
14512 | } | |
14513 | else | |
14514 | /* Caller assumes we cannot fail. */ | |
14515 | gcc_assert (use_rsqrt_p (mode)); | |
daef0a8c | 14516 | |
a0ee8352 RS |
14517 | rtx pg = NULL_RTX; |
14518 | if (aarch64_sve_mode_p (mode)) | |
14519 | pg = aarch64_ptrue_reg (aarch64_sve_pred_mode (mode)); | |
d7814449 | 14520 | machine_mode mmsk = (VECTOR_MODE_P (mode) |
d083ee47 | 14521 | ? related_int_vector_mode (mode).require () |
d7814449 | 14522 | : int_mode_for_mode (mode).require ()); |
0df28e68 | 14523 | rtx xmsk = NULL_RTX; |
98daafa0 | 14524 | if (!recp) |
0df28e68 RS |
14525 | { |
14526 | /* When calculating the approximate square root, compare the | |
14527 | argument with 0.0 and create a mask. */ | |
a0ee8352 RS |
14528 | rtx zero = CONST0_RTX (mode); |
14529 | if (pg) | |
14530 | { | |
14531 | xmsk = gen_reg_rtx (GET_MODE (pg)); | |
14532 | rtx hint = gen_int_mode (SVE_KNOWN_PTRUE, SImode); | |
14533 | emit_insn (gen_aarch64_pred_fcm (UNSPEC_COND_FCMNE, mode, | |
14534 | xmsk, pg, hint, src, zero)); | |
14535 | } | |
14536 | else | |
14537 | { | |
14538 | xmsk = gen_reg_rtx (mmsk); | |
14539 | emit_insn (gen_rtx_SET (xmsk, | |
14540 | gen_rtx_NEG (mmsk, | |
14541 | gen_rtx_EQ (mmsk, src, zero)))); | |
14542 | } | |
0df28e68 | 14543 | } |
a6fc00da | 14544 | |
98daafa0 EM |
14545 | /* Estimate the approximate reciprocal square root. */ |
14546 | rtx xdst = gen_reg_rtx (mode); | |
0016d8d9 | 14547 | emit_insn (gen_aarch64_rsqrte (mode, xdst, src)); |
a6fc00da | 14548 | |
98daafa0 EM |
14549 | /* Iterate over the series twice for SF and thrice for DF. */ |
14550 | int iterations = (GET_MODE_INNER (mode) == DFmode) ? 3 : 2; | |
a6fc00da | 14551 | |
98daafa0 EM |
14552 | /* Optionally iterate over the series once less for faster performance |
14553 | while sacrificing the accuracy. */ | |
14554 | if ((recp && flag_mrecip_low_precision_sqrt) | |
14555 | || (!recp && flag_mlow_precision_sqrt)) | |
a6fc00da BH |
14556 | iterations--; |
14557 | ||
98daafa0 EM |
14558 | /* Iterate over the series to calculate the approximate reciprocal square |
14559 | root. */ | |
14560 | rtx x1 = gen_reg_rtx (mode); | |
14561 | while (iterations--) | |
a6fc00da | 14562 | { |
a6fc00da | 14563 | rtx x2 = gen_reg_rtx (mode); |
a0ee8352 | 14564 | aarch64_emit_mult (x2, pg, xdst, xdst); |
98daafa0 | 14565 | |
0016d8d9 | 14566 | emit_insn (gen_aarch64_rsqrts (mode, x1, src, x2)); |
a6fc00da | 14567 | |
98daafa0 | 14568 | if (iterations > 0) |
a0ee8352 | 14569 | aarch64_emit_mult (xdst, pg, xdst, x1); |
98daafa0 EM |
14570 | } |
14571 | ||
14572 | if (!recp) | |
14573 | { | |
a0ee8352 RS |
14574 | if (pg) |
14575 | /* Multiply nonzero source values by the corresponding intermediate | |
14576 | result elements, so that the final calculation is the approximate | |
14577 | square root rather than its reciprocal. Select a zero result for | |
14578 | zero source values, to avoid the Inf * 0 -> NaN that we'd get | |
14579 | otherwise. */ | |
14580 | emit_insn (gen_cond (UNSPEC_COND_FMUL, mode, | |
14581 | xdst, xmsk, xdst, src, CONST0_RTX (mode))); | |
14582 | else | |
14583 | { | |
14584 | /* Qualify the approximate reciprocal square root when the | |
14585 | argument is 0.0 by squashing the intermediary result to 0.0. */ | |
14586 | rtx xtmp = gen_reg_rtx (mmsk); | |
14587 | emit_set_insn (xtmp, gen_rtx_AND (mmsk, gen_rtx_NOT (mmsk, xmsk), | |
14588 | gen_rtx_SUBREG (mmsk, xdst, 0))); | |
14589 | emit_move_insn (xdst, gen_rtx_SUBREG (mode, xtmp, 0)); | |
a6fc00da | 14590 | |
a0ee8352 RS |
14591 | /* Calculate the approximate square root. */ |
14592 | aarch64_emit_mult (xdst, pg, xdst, src); | |
14593 | } | |
a6fc00da BH |
14594 | } |
14595 | ||
98daafa0 | 14596 | /* Finalize the approximation. */ |
a0ee8352 | 14597 | aarch64_emit_mult (dst, pg, xdst, x1); |
98daafa0 EM |
14598 | |
14599 | return true; | |
a6fc00da BH |
14600 | } |
14601 | ||
79a2bc2d EM |
14602 | /* Emit the instruction sequence to compute the approximation for the division |
14603 | of NUM by DEN in QUO and return whether the sequence was emitted or not. */ | |
14604 | ||
14605 | bool | |
14606 | aarch64_emit_approx_div (rtx quo, rtx num, rtx den) | |
14607 | { | |
14608 | machine_mode mode = GET_MODE (quo); | |
33d72b63 JW |
14609 | |
14610 | if (GET_MODE_INNER (mode) == HFmode) | |
14611 | return false; | |
14612 | ||
79a2bc2d EM |
14613 | bool use_approx_division_p = (flag_mlow_precision_div |
14614 | || (aarch64_tune_params.approx_modes->division | |
14615 | & AARCH64_APPROX_MODE (mode))); | |
14616 | ||
14617 | if (!flag_finite_math_only | |
14618 | || flag_trapping_math | |
14619 | || !flag_unsafe_math_optimizations | |
14620 | || optimize_function_for_size_p (cfun) | |
14621 | || !use_approx_division_p) | |
14622 | return false; | |
14623 | ||
1be49a38 RR |
14624 | if (!TARGET_SIMD && VECTOR_MODE_P (mode)) |
14625 | return false; | |
14626 | ||
04f307cb RS |
14627 | rtx pg = NULL_RTX; |
14628 | if (aarch64_sve_mode_p (mode)) | |
14629 | pg = aarch64_ptrue_reg (aarch64_sve_pred_mode (mode)); | |
14630 | ||
79a2bc2d EM |
14631 | /* Estimate the approximate reciprocal. */ |
14632 | rtx xrcp = gen_reg_rtx (mode); | |
0016d8d9 | 14633 | emit_insn (gen_aarch64_frecpe (mode, xrcp, den)); |
79a2bc2d EM |
14634 | |
14635 | /* Iterate over the series twice for SF and thrice for DF. */ | |
14636 | int iterations = (GET_MODE_INNER (mode) == DFmode) ? 3 : 2; | |
14637 | ||
dbf3dc75 BL |
14638 | /* Optionally iterate over the series less for faster performance, |
14639 | while sacrificing the accuracy. The default is 2 for DF and 1 for SF. */ | |
79a2bc2d | 14640 | if (flag_mlow_precision_div) |
dbf3dc75 BL |
14641 | iterations = (GET_MODE_INNER (mode) == DFmode |
14642 | ? aarch64_double_recp_precision | |
14643 | : aarch64_float_recp_precision); | |
79a2bc2d EM |
14644 | |
14645 | /* Iterate over the series to calculate the approximate reciprocal. */ | |
14646 | rtx xtmp = gen_reg_rtx (mode); | |
14647 | while (iterations--) | |
14648 | { | |
0016d8d9 | 14649 | emit_insn (gen_aarch64_frecps (mode, xtmp, xrcp, den)); |
79a2bc2d EM |
14650 | |
14651 | if (iterations > 0) | |
04f307cb | 14652 | aarch64_emit_mult (xrcp, pg, xrcp, xtmp); |
79a2bc2d EM |
14653 | } |
14654 | ||
14655 | if (num != CONST1_RTX (mode)) | |
14656 | { | |
14657 | /* As the approximate reciprocal of DEN is already calculated, only | |
14658 | calculate the approximate division when NUM is not 1.0. */ | |
14659 | rtx xnum = force_reg (mode, num); | |
04f307cb | 14660 | aarch64_emit_mult (xrcp, pg, xrcp, xnum); |
79a2bc2d EM |
14661 | } |
14662 | ||
14663 | /* Finalize the approximation. */ | |
04f307cb | 14664 | aarch64_emit_mult (quo, pg, xrcp, xtmp); |
79a2bc2d EM |
14665 | return true; |
14666 | } | |
14667 | ||
d126a4ae AP |
14668 | /* Return the number of instructions that can be issued per cycle. */ |
14669 | static int | |
14670 | aarch64_sched_issue_rate (void) | |
14671 | { | |
b175b679 | 14672 | return aarch64_tune_params.issue_rate; |
d126a4ae AP |
14673 | } |
14674 | ||
d0bc0cb6 RS |
14675 | /* Implement TARGET_SCHED_VARIABLE_ISSUE. */ |
14676 | static int | |
14677 | aarch64_sched_variable_issue (FILE *, int, rtx_insn *insn, int more) | |
14678 | { | |
14679 | if (DEBUG_INSN_P (insn)) | |
14680 | return more; | |
14681 | ||
14682 | rtx_code code = GET_CODE (PATTERN (insn)); | |
14683 | if (code == USE || code == CLOBBER) | |
14684 | return more; | |
14685 | ||
14686 | if (get_attr_type (insn) == TYPE_NO_INSN) | |
14687 | return more; | |
14688 | ||
14689 | return more - 1; | |
14690 | } | |
14691 | ||
d03f7e44 MK |
14692 | static int |
14693 | aarch64_sched_first_cycle_multipass_dfa_lookahead (void) | |
14694 | { | |
14695 | int issue_rate = aarch64_sched_issue_rate (); | |
14696 | ||
14697 | return issue_rate > 1 && !sched_fusion ? issue_rate : 0; | |
14698 | } | |
14699 | ||
2d6bc7fa KT |
14700 | |
14701 | /* Implement TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD as | |
14702 | autopref_multipass_dfa_lookahead_guard from haifa-sched.c. It only | |
14703 | has an effect if PARAM_SCHED_AUTOPREF_QUEUE_DEPTH > 0. */ | |
14704 | ||
14705 | static int | |
14706 | aarch64_first_cycle_multipass_dfa_lookahead_guard (rtx_insn *insn, | |
14707 | int ready_index) | |
14708 | { | |
14709 | return autopref_multipass_dfa_lookahead_guard (insn, ready_index); | |
14710 | } | |
14711 | ||
14712 | ||
8990e73a TB |
14713 | /* Vectorizer cost model target hooks. */ |
14714 | ||
1205a8ca RS |
14715 | /* Information about how the CPU would issue the scalar, Advanced SIMD |
14716 | or SVE version of a vector loop, using the scheme defined by the | |
14717 | aarch64_base_vec_issue_info hierarchy of structures. */ | |
15aba5a6 | 14718 | class aarch64_vec_op_count |
1205a8ca | 14719 | { |
15aba5a6 | 14720 | public: |
1a5288fe | 14721 | aarch64_vec_op_count () = default; |
2e1886ea RS |
14722 | aarch64_vec_op_count (const aarch64_vec_issue_info *, unsigned int, |
14723 | unsigned int = 1); | |
15aba5a6 RS |
14724 | |
14725 | unsigned int vec_flags () const { return m_vec_flags; } | |
2e1886ea RS |
14726 | unsigned int vf_factor () const { return m_vf_factor; } |
14727 | ||
15aba5a6 RS |
14728 | const aarch64_base_vec_issue_info *base_issue_info () const; |
14729 | const aarch64_simd_vec_issue_info *simd_issue_info () const; | |
14730 | const aarch64_sve_vec_issue_info *sve_issue_info () const; | |
14731 | ||
a82ffd43 RS |
14732 | fractional_cost rename_cycles_per_iter () const; |
14733 | fractional_cost min_nonpred_cycles_per_iter () const; | |
14734 | fractional_cost min_pred_cycles_per_iter () const; | |
14735 | fractional_cost min_cycles_per_iter () const; | |
14736 | ||
1205a8ca RS |
14737 | void dump () const; |
14738 | ||
14739 | /* The number of individual "general" operations. See the comments | |
14740 | in aarch64_base_vec_issue_info for details. */ | |
14741 | unsigned int general_ops = 0; | |
14742 | ||
14743 | /* The number of load and store operations, under the same scheme | |
14744 | as above. */ | |
14745 | unsigned int loads = 0; | |
14746 | unsigned int stores = 0; | |
14747 | ||
14748 | /* The minimum number of cycles needed to execute all loop-carried | |
14749 | operations, which in the vector code become associated with | |
14750 | reductions. */ | |
14751 | unsigned int reduction_latency = 0; | |
1205a8ca RS |
14752 | |
14753 | /* The number of individual predicate operations. See the comments | |
14754 | in aarch64_sve_vec_issue_info for details. */ | |
14755 | unsigned int pred_ops = 0; | |
15aba5a6 RS |
14756 | |
14757 | private: | |
14758 | /* The issue information for the core. */ | |
1a5288fe | 14759 | const aarch64_vec_issue_info *m_issue_info = nullptr; |
15aba5a6 RS |
14760 | |
14761 | /* - If M_VEC_FLAGS is zero then this structure describes scalar code | |
14762 | - If M_VEC_FLAGS & VEC_ADVSIMD is nonzero then this structure describes | |
14763 | Advanced SIMD code. | |
14764 | - If M_VEC_FLAGS & VEC_ANY_SVE is nonzero then this structure describes | |
14765 | SVE code. */ | |
1a5288fe | 14766 | unsigned int m_vec_flags = 0; |
2e1886ea RS |
14767 | |
14768 | /* Assume that, when the code is executing on the core described | |
14769 | by M_ISSUE_INFO, one iteration of the loop will handle M_VF_FACTOR | |
14770 | times more data than the vectorizer anticipates. | |
14771 | ||
14772 | This is only ever different from 1 for SVE. It allows us to consider | |
14773 | what would happen on a 256-bit SVE target even when the -mtune | |
14774 | parameters say that the “likely” SVE length is 128 bits. */ | |
14775 | unsigned int m_vf_factor = 1; | |
1205a8ca RS |
14776 | }; |
14777 | ||
15aba5a6 RS |
14778 | aarch64_vec_op_count:: |
14779 | aarch64_vec_op_count (const aarch64_vec_issue_info *issue_info, | |
2e1886ea | 14780 | unsigned int vec_flags, unsigned int vf_factor) |
15aba5a6 | 14781 | : m_issue_info (issue_info), |
2e1886ea RS |
14782 | m_vec_flags (vec_flags), |
14783 | m_vf_factor (vf_factor) | |
15aba5a6 RS |
14784 | { |
14785 | } | |
14786 | ||
14787 | /* Return the base issue information (i.e. the parts that make sense | |
14788 | for both scalar and vector code). Return null if we have no issue | |
14789 | information. */ | |
14790 | const aarch64_base_vec_issue_info * | |
14791 | aarch64_vec_op_count::base_issue_info () const | |
14792 | { | |
14793 | if (auto *ret = simd_issue_info ()) | |
14794 | return ret; | |
1a5288fe | 14795 | return m_issue_info->scalar; |
15aba5a6 RS |
14796 | } |
14797 | ||
14798 | /* If the structure describes vector code and we have associated issue | |
14799 | information, return that issue information, otherwise return null. */ | |
14800 | const aarch64_simd_vec_issue_info * | |
14801 | aarch64_vec_op_count::simd_issue_info () const | |
14802 | { | |
14803 | if (auto *ret = sve_issue_info ()) | |
14804 | return ret; | |
1a5288fe | 14805 | if (m_vec_flags) |
15aba5a6 RS |
14806 | return m_issue_info->advsimd; |
14807 | return nullptr; | |
14808 | } | |
14809 | ||
14810 | /* If the structure describes SVE code and we have associated issue | |
14811 | information, return that issue information, otherwise return null. */ | |
14812 | const aarch64_sve_vec_issue_info * | |
14813 | aarch64_vec_op_count::sve_issue_info () const | |
14814 | { | |
1a5288fe | 14815 | if (m_vec_flags & VEC_ANY_SVE) |
15aba5a6 RS |
14816 | return m_issue_info->sve; |
14817 | return nullptr; | |
14818 | } | |
14819 | ||
a82ffd43 RS |
14820 | /* Estimate the minimum number of cycles per iteration needed to rename |
14821 | the instructions. | |
14822 | ||
14823 | ??? For now this is done inline rather than via cost tables, since it | |
14824 | isn't clear how it should be parameterized for the general case. */ | |
14825 | fractional_cost | |
14826 | aarch64_vec_op_count::rename_cycles_per_iter () const | |
14827 | { | |
14828 | if (sve_issue_info () == &neoverse512tvb_sve_issue_info) | |
14829 | /* + 1 for an addition. We've already counted a general op for each | |
14830 | store, so we don't need to account for stores separately. The branch | |
14831 | reads no registers and so does not need to be counted either. | |
14832 | ||
14833 | ??? This value is very much on the pessimistic side, but seems to work | |
14834 | pretty well in practice. */ | |
14835 | return { general_ops + loads + pred_ops + 1, 5 }; | |
14836 | ||
14837 | return 0; | |
14838 | } | |
14839 | ||
14840 | /* Like min_cycles_per_iter, but excluding predicate operations. */ | |
14841 | fractional_cost | |
14842 | aarch64_vec_op_count::min_nonpred_cycles_per_iter () const | |
14843 | { | |
14844 | auto *issue_info = base_issue_info (); | |
14845 | ||
14846 | fractional_cost cycles = MAX (reduction_latency, 1); | |
14847 | cycles = std::max (cycles, { stores, issue_info->stores_per_cycle }); | |
14848 | cycles = std::max (cycles, { loads + stores, | |
14849 | issue_info->loads_stores_per_cycle }); | |
14850 | cycles = std::max (cycles, { general_ops, | |
14851 | issue_info->general_ops_per_cycle }); | |
14852 | cycles = std::max (cycles, rename_cycles_per_iter ()); | |
14853 | return cycles; | |
14854 | } | |
14855 | ||
14856 | /* Like min_cycles_per_iter, but including only the predicate operations. */ | |
14857 | fractional_cost | |
14858 | aarch64_vec_op_count::min_pred_cycles_per_iter () const | |
14859 | { | |
14860 | if (auto *issue_info = sve_issue_info ()) | |
14861 | return { pred_ops, issue_info->pred_ops_per_cycle }; | |
14862 | return 0; | |
14863 | } | |
14864 | ||
14865 | /* Estimate the minimum number of cycles needed to issue the operations. | |
14866 | This is a very simplistic model! */ | |
14867 | fractional_cost | |
14868 | aarch64_vec_op_count::min_cycles_per_iter () const | |
14869 | { | |
14870 | return std::max (min_nonpred_cycles_per_iter (), | |
14871 | min_pred_cycles_per_iter ()); | |
14872 | } | |
14873 | ||
14874 | /* Dump information about the structure. */ | |
14875 | void | |
14876 | aarch64_vec_op_count::dump () const | |
14877 | { | |
14878 | dump_printf_loc (MSG_NOTE, vect_location, | |
14879 | " load operations = %d\n", loads); | |
14880 | dump_printf_loc (MSG_NOTE, vect_location, | |
14881 | " store operations = %d\n", stores); | |
14882 | dump_printf_loc (MSG_NOTE, vect_location, | |
14883 | " general operations = %d\n", general_ops); | |
14884 | if (sve_issue_info ()) | |
14885 | dump_printf_loc (MSG_NOTE, vect_location, | |
14886 | " predicate operations = %d\n", pred_ops); | |
14887 | dump_printf_loc (MSG_NOTE, vect_location, | |
14888 | " reduction latency = %d\n", reduction_latency); | |
14889 | if (auto rcpi = rename_cycles_per_iter ()) | |
14890 | dump_printf_loc (MSG_NOTE, vect_location, | |
14891 | " estimated cycles per iteration to rename = %f\n", | |
14892 | rcpi.as_double ()); | |
14893 | if (auto pred_cpi = min_pred_cycles_per_iter ()) | |
14894 | { | |
14895 | dump_printf_loc (MSG_NOTE, vect_location, | |
14896 | " estimated min cycles per iteration" | |
14897 | " without predication = %f\n", | |
14898 | min_nonpred_cycles_per_iter ().as_double ()); | |
14899 | dump_printf_loc (MSG_NOTE, vect_location, | |
14900 | " estimated min cycles per iteration" | |
14901 | " for predication = %f\n", pred_cpi.as_double ()); | |
14902 | } | |
14903 | if (auto cpi = min_cycles_per_iter ()) | |
14904 | dump_printf_loc (MSG_NOTE, vect_location, | |
14905 | " estimated min cycles per iteration = %f\n", | |
14906 | cpi.as_double ()); | |
14907 | } | |
14908 | ||
50a525b5 | 14909 | /* Information about vector code that we're in the process of costing. */ |
d43fc1df | 14910 | class aarch64_vector_costs : public vector_costs |
50a525b5 | 14911 | { |
d43fc1df | 14912 | public: |
15aba5a6 | 14913 | aarch64_vector_costs (vec_info *, bool); |
6239dd05 RS |
14914 | |
14915 | unsigned int add_stmt_cost (int count, vect_cost_for_stmt kind, | |
14916 | stmt_vec_info stmt_info, tree vectype, | |
14917 | int misalign, | |
14918 | vect_cost_model_location where) override; | |
0612883d | 14919 | void finish_cost (const vector_costs *) override; |
c6c5c5eb | 14920 | bool better_main_loop_than_p (const vector_costs *other) const override; |
3b924b0d | 14921 | |
d43fc1df RS |
14922 | private: |
14923 | void record_potential_advsimd_unrolling (loop_vec_info); | |
14924 | void analyze_loop_vinfo (loop_vec_info); | |
87fcff96 RS |
14925 | void count_ops (unsigned int, vect_cost_for_stmt, stmt_vec_info, |
14926 | aarch64_vec_op_count *); | |
1a5288fe | 14927 | fractional_cost adjust_body_cost_sve (const aarch64_vec_op_count *, |
c6c5c5eb RS |
14928 | fractional_cost, unsigned int, |
14929 | unsigned int *, bool *); | |
6756706e RS |
14930 | unsigned int adjust_body_cost (loop_vec_info, const aarch64_vector_costs *, |
14931 | unsigned int); | |
c6c5c5eb | 14932 | bool prefer_unrolled_loop () const; |
d43fc1df RS |
14933 | |
14934 | /* True if we have performed one-time initialization based on the | |
14935 | vec_info. */ | |
14936 | bool m_analyzed_vinfo = false; | |
3b924b0d | 14937 | |
d43fc1df RS |
14938 | /* - If M_VEC_FLAGS is zero then we're costing the original scalar code. |
14939 | - If M_VEC_FLAGS & VEC_ADVSIMD is nonzero then we're costing Advanced | |
3b924b0d | 14940 | SIMD code. |
d43fc1df RS |
14941 | - If M_VEC_FLAGS & VEC_ANY_SVE is nonzero then we're costing SVE code. */ |
14942 | unsigned int m_vec_flags = 0; | |
3b924b0d RS |
14943 | |
14944 | /* On some CPUs, SVE and Advanced SIMD provide the same theoretical vector | |
14945 | throughput, such as 4x128 Advanced SIMD vs. 2x256 SVE. In those | |
14946 | situations, we try to predict whether an Advanced SIMD implementation | |
14947 | of the loop could be completely unrolled and become straight-line code. | |
14948 | If so, it is generally better to use the Advanced SIMD version rather | |
14949 | than length-agnostic SVE, since the SVE loop would execute an unknown | |
14950 | number of times and so could not be completely unrolled in the same way. | |
14951 | ||
d43fc1df | 14952 | If we're applying this heuristic, M_UNROLLED_ADVSIMD_NITERS is the |
3b924b0d | 14953 | number of Advanced SIMD loop iterations that would be unrolled and |
d43fc1df | 14954 | M_UNROLLED_ADVSIMD_STMTS estimates the total number of statements |
3b924b0d RS |
14955 | in the unrolled loop. Both values are zero if we're not applying |
14956 | the heuristic. */ | |
d43fc1df RS |
14957 | unsigned HOST_WIDE_INT m_unrolled_advsimd_niters = 0; |
14958 | unsigned HOST_WIDE_INT m_unrolled_advsimd_stmts = 0; | |
1205a8ca RS |
14959 | |
14960 | /* If we're vectorizing a loop that executes a constant number of times, | |
14961 | this variable gives the number of times that the vector loop would | |
14962 | iterate, otherwise it is zero. */ | |
d43fc1df | 14963 | uint64_t m_num_vector_iterations = 0; |
1205a8ca | 14964 | |
6756706e RS |
14965 | /* Used only when vectorizing loops. Estimates the number and kind of |
14966 | operations that would be needed by one iteration of the scalar | |
1a5288fe RS |
14967 | or vector loop. There is one entry for each tuning option of |
14968 | interest. */ | |
14969 | auto_vec<aarch64_vec_op_count, 2> m_ops; | |
50a525b5 RS |
14970 | }; |
14971 | ||
15aba5a6 RS |
14972 | aarch64_vector_costs::aarch64_vector_costs (vec_info *vinfo, |
14973 | bool costing_for_scalar) | |
14974 | : vector_costs (vinfo, costing_for_scalar), | |
6756706e | 14975 | m_vec_flags (costing_for_scalar ? 0 |
1a5288fe | 14976 | : aarch64_classify_vector_mode (vinfo->vector_mode)) |
15aba5a6 | 14977 | { |
1a5288fe RS |
14978 | if (auto *issue_info = aarch64_tune_params.vec_costs->issue_info) |
14979 | { | |
14980 | m_ops.quick_push ({ issue_info, m_vec_flags }); | |
1a5288fe | 14981 | if (aarch64_tune_params.vec_costs == &neoverse512tvb_vector_cost) |
2e1886ea RS |
14982 | { |
14983 | unsigned int vf_factor = (m_vec_flags & VEC_ANY_SVE) ? 2 : 1; | |
14984 | m_ops.quick_push ({ &neoversev1_vec_issue_info, m_vec_flags, | |
14985 | vf_factor }); | |
14986 | } | |
1a5288fe | 14987 | } |
15aba5a6 RS |
14988 | } |
14989 | ||
6239dd05 RS |
14990 | /* Implement TARGET_VECTORIZE_CREATE_COSTS. */ |
14991 | vector_costs * | |
14992 | aarch64_vectorize_create_costs (vec_info *vinfo, bool costing_for_scalar) | |
50a525b5 | 14993 | { |
6239dd05 | 14994 | return new aarch64_vector_costs (vinfo, costing_for_scalar); |
50a525b5 RS |
14995 | } |
14996 | ||
e253bb8b RS |
14997 | /* Return true if the current CPU should use the new costs defined |
14998 | in GCC 11. This should be removed for GCC 12 and above, with the | |
14999 | costs applying to all CPUs instead. */ | |
15000 | static bool | |
15001 | aarch64_use_new_vector_costs_p () | |
15002 | { | |
15003 | return (aarch64_tune_params.extra_tuning_flags | |
15004 | & AARCH64_EXTRA_TUNE_USE_NEW_VECTOR_COSTS); | |
15005 | } | |
15006 | ||
15007 | /* Return the appropriate SIMD costs for vectors of type VECTYPE. */ | |
15008 | static const simd_vec_cost * | |
15009 | aarch64_simd_vec_costs (tree vectype) | |
15010 | { | |
15011 | const cpu_vector_cost *costs = aarch64_tune_params.vec_costs; | |
15012 | if (vectype != NULL | |
15013 | && aarch64_sve_mode_p (TYPE_MODE (vectype)) | |
15014 | && costs->sve != NULL) | |
15015 | return costs->sve; | |
15016 | return costs->advsimd; | |
15017 | } | |
15018 | ||
1205a8ca RS |
15019 | /* Return the appropriate SIMD costs for vectors with VEC_* flags FLAGS. */ |
15020 | static const simd_vec_cost * | |
15021 | aarch64_simd_vec_costs_for_flags (unsigned int flags) | |
15022 | { | |
15023 | const cpu_vector_cost *costs = aarch64_tune_params.vec_costs; | |
15024 | if ((flags & VEC_ANY_SVE) && costs->sve) | |
15025 | return costs->sve; | |
15026 | return costs->advsimd; | |
15027 | } | |
15028 | ||
902b7c9e RS |
15029 | /* If STMT_INFO is a memory reference, return the scalar memory type, |
15030 | otherwise return null. */ | |
15031 | static tree | |
15032 | aarch64_dr_type (stmt_vec_info stmt_info) | |
15033 | { | |
15034 | if (auto dr = STMT_VINFO_DATA_REF (stmt_info)) | |
15035 | return TREE_TYPE (DR_REF (dr)); | |
15036 | return NULL_TREE; | |
15037 | } | |
15038 | ||
3b924b0d | 15039 | /* Decide whether to use the unrolling heuristic described above |
d43fc1df RS |
15040 | m_unrolled_advsimd_niters, updating that field if so. LOOP_VINFO |
15041 | describes the loop that we're vectorizing. */ | |
15042 | void | |
15043 | aarch64_vector_costs:: | |
15044 | record_potential_advsimd_unrolling (loop_vec_info loop_vinfo) | |
3b924b0d RS |
15045 | { |
15046 | /* The heuristic only makes sense on targets that have the same | |
15047 | vector throughput for SVE and Advanced SIMD. */ | |
15048 | if (!(aarch64_tune_params.extra_tuning_flags | |
15049 | & AARCH64_EXTRA_TUNE_MATCHED_VECTOR_THROUGHPUT)) | |
15050 | return; | |
15051 | ||
15052 | /* We only want to apply the heuristic if LOOP_VINFO is being | |
15053 | vectorized for SVE. */ | |
d43fc1df | 15054 | if (!(m_vec_flags & VEC_ANY_SVE)) |
3b924b0d RS |
15055 | return; |
15056 | ||
15057 | /* Check whether it is possible in principle to use Advanced SIMD | |
15058 | instead. */ | |
15059 | if (aarch64_autovec_preference == 2) | |
15060 | return; | |
15061 | ||
15062 | /* We don't want to apply the heuristic to outer loops, since it's | |
15063 | harder to track two levels of unrolling. */ | |
15064 | if (LOOP_VINFO_LOOP (loop_vinfo)->inner) | |
15065 | return; | |
15066 | ||
15067 | /* Only handle cases in which the number of Advanced SIMD iterations | |
15068 | would be known at compile time but the number of SVE iterations | |
15069 | would not. */ | |
15070 | if (!LOOP_VINFO_NITERS_KNOWN_P (loop_vinfo) | |
15071 | || aarch64_sve_vg.is_constant ()) | |
15072 | return; | |
15073 | ||
15074 | /* Guess how many times the Advanced SIMD loop would iterate and make | |
15075 | sure that it is within the complete unrolling limit. Even if the | |
15076 | number of iterations is small enough, the number of statements might | |
15077 | not be, which is why we need to estimate the number of statements too. */ | |
15078 | unsigned int estimated_vq = aarch64_estimated_sve_vq (); | |
15079 | unsigned int advsimd_vf = CEIL (vect_vf_for_cost (loop_vinfo), estimated_vq); | |
15080 | unsigned HOST_WIDE_INT unrolled_advsimd_niters | |
15081 | = LOOP_VINFO_INT_NITERS (loop_vinfo) / advsimd_vf; | |
15082 | if (unrolled_advsimd_niters > (unsigned int) param_max_completely_peel_times) | |
15083 | return; | |
15084 | ||
15085 | /* Record that we're applying the heuristic and should try to estimate | |
15086 | the number of statements in the Advanced SIMD loop. */ | |
d43fc1df | 15087 | m_unrolled_advsimd_niters = unrolled_advsimd_niters; |
3b924b0d RS |
15088 | } |
15089 | ||
d43fc1df RS |
15090 | /* Do one-time initialization of the aarch64_vector_costs given that we're |
15091 | costing the loop vectorization described by LOOP_VINFO. */ | |
15092 | void | |
15093 | aarch64_vector_costs::analyze_loop_vinfo (loop_vec_info loop_vinfo) | |
3b924b0d | 15094 | { |
1205a8ca RS |
15095 | /* Record the number of times that the vector loop would execute, |
15096 | if known. */ | |
15097 | class loop *loop = LOOP_VINFO_LOOP (loop_vinfo); | |
15098 | auto scalar_niters = max_stmt_executions_int (loop); | |
15099 | if (scalar_niters >= 0) | |
15100 | { | |
15101 | unsigned int vf = vect_vf_for_cost (loop_vinfo); | |
15102 | if (LOOP_VINFO_MASKS (loop_vinfo).is_empty ()) | |
d43fc1df | 15103 | m_num_vector_iterations = scalar_niters / vf; |
1205a8ca | 15104 | else |
d43fc1df | 15105 | m_num_vector_iterations = CEIL (scalar_niters, vf); |
1205a8ca RS |
15106 | } |
15107 | ||
d43fc1df RS |
15108 | /* Detect whether we're vectorizing for SVE and should apply the unrolling |
15109 | heuristic described above m_unrolled_advsimd_niters. */ | |
15110 | record_potential_advsimd_unrolling (loop_vinfo); | |
1205a8ca RS |
15111 | |
15112 | /* Record the issue information for any SVE WHILE instructions that the | |
15113 | loop needs. */ | |
1a5288fe | 15114 | if (!m_ops.is_empty () && !LOOP_VINFO_MASKS (loop_vinfo).is_empty ()) |
1205a8ca RS |
15115 | { |
15116 | unsigned int num_masks = 0; | |
15117 | rgroup_controls *rgm; | |
15118 | unsigned int num_vectors_m1; | |
15119 | FOR_EACH_VEC_ELT (LOOP_VINFO_MASKS (loop_vinfo), num_vectors_m1, rgm) | |
15120 | if (rgm->type) | |
15121 | num_masks += num_vectors_m1 + 1; | |
1a5288fe RS |
15122 | for (auto &ops : m_ops) |
15123 | if (auto *issue = ops.sve_issue_info ()) | |
15124 | ops.pred_ops += num_masks * issue->while_pred_ops; | |
1205a8ca | 15125 | } |
3b924b0d RS |
15126 | } |
15127 | ||
8990e73a TB |
15128 | /* Implement targetm.vectorize.builtin_vectorization_cost. */ |
15129 | static int | |
15130 | aarch64_builtin_vectorization_cost (enum vect_cost_for_stmt type_of_cost, | |
15131 | tree vectype, | |
15132 | int misalign ATTRIBUTE_UNUSED) | |
15133 | { | |
15134 | unsigned elements; | |
cd8ae5ed AP |
15135 | const cpu_vector_cost *costs = aarch64_tune_params.vec_costs; |
15136 | bool fp = false; | |
15137 | ||
15138 | if (vectype != NULL) | |
15139 | fp = FLOAT_TYPE_P (vectype); | |
8990e73a | 15140 | |
e253bb8b | 15141 | const simd_vec_cost *simd_costs = aarch64_simd_vec_costs (vectype); |
76e4f444 | 15142 | |
8990e73a TB |
15143 | switch (type_of_cost) |
15144 | { | |
15145 | case scalar_stmt: | |
cd8ae5ed | 15146 | return fp ? costs->scalar_fp_stmt_cost : costs->scalar_int_stmt_cost; |
8990e73a TB |
15147 | |
15148 | case scalar_load: | |
cd8ae5ed | 15149 | return costs->scalar_load_cost; |
8990e73a TB |
15150 | |
15151 | case scalar_store: | |
cd8ae5ed | 15152 | return costs->scalar_store_cost; |
8990e73a TB |
15153 | |
15154 | case vector_stmt: | |
76e4f444 KT |
15155 | return fp ? simd_costs->fp_stmt_cost |
15156 | : simd_costs->int_stmt_cost; | |
8990e73a TB |
15157 | |
15158 | case vector_load: | |
76e4f444 | 15159 | return simd_costs->align_load_cost; |
8990e73a TB |
15160 | |
15161 | case vector_store: | |
76e4f444 | 15162 | return simd_costs->store_cost; |
8990e73a TB |
15163 | |
15164 | case vec_to_scalar: | |
76e4f444 | 15165 | return simd_costs->vec_to_scalar_cost; |
8990e73a TB |
15166 | |
15167 | case scalar_to_vec: | |
76e4f444 | 15168 | return simd_costs->scalar_to_vec_cost; |
8990e73a TB |
15169 | |
15170 | case unaligned_load: | |
cc9fe6bb | 15171 | case vector_gather_load: |
76e4f444 | 15172 | return simd_costs->unalign_load_cost; |
8990e73a TB |
15173 | |
15174 | case unaligned_store: | |
cc9fe6bb | 15175 | case vector_scatter_store: |
76e4f444 | 15176 | return simd_costs->unalign_store_cost; |
8990e73a TB |
15177 | |
15178 | case cond_branch_taken: | |
cd8ae5ed | 15179 | return costs->cond_taken_branch_cost; |
8990e73a TB |
15180 | |
15181 | case cond_branch_not_taken: | |
cd8ae5ed | 15182 | return costs->cond_not_taken_branch_cost; |
8990e73a TB |
15183 | |
15184 | case vec_perm: | |
76e4f444 | 15185 | return simd_costs->permute_cost; |
c428f91c | 15186 | |
8990e73a | 15187 | case vec_promote_demote: |
76e4f444 KT |
15188 | return fp ? simd_costs->fp_stmt_cost |
15189 | : simd_costs->int_stmt_cost; | |
8990e73a TB |
15190 | |
15191 | case vec_construct: | |
6a70badb | 15192 | elements = estimated_poly_value (TYPE_VECTOR_SUBPARTS (vectype)); |
8990e73a TB |
15193 | return elements / 2 + 1; |
15194 | ||
15195 | default: | |
15196 | gcc_unreachable (); | |
15197 | } | |
15198 | } | |
15199 | ||
b1a831f0 RS |
15200 | /* Return true if an access of kind KIND for STMT_INFO represents one |
15201 | vector of an LD[234] or ST[234] operation. Return the total number of | |
15202 | vectors (2, 3 or 4) if so, otherwise return a value outside that range. */ | |
15203 | static int | |
15204 | aarch64_ld234_st234_vectors (vect_cost_for_stmt kind, stmt_vec_info stmt_info) | |
15205 | { | |
15206 | if ((kind == vector_load | |
15207 | || kind == unaligned_load | |
15208 | || kind == vector_store | |
15209 | || kind == unaligned_store) | |
15210 | && STMT_VINFO_DATA_REF (stmt_info)) | |
15211 | { | |
15212 | stmt_info = DR_GROUP_FIRST_ELEMENT (stmt_info); | |
15213 | if (stmt_info | |
15214 | && STMT_VINFO_MEMORY_ACCESS_TYPE (stmt_info) == VMAT_LOAD_STORE_LANES) | |
15215 | return DR_GROUP_SIZE (stmt_info); | |
15216 | } | |
15217 | return 0; | |
15218 | } | |
15219 | ||
8b50d7a4 RS |
15220 | /* Return true if creating multiple copies of STMT_INFO for Advanced SIMD |
15221 | vectors would produce a series of LDP or STP operations. KIND is the | |
15222 | kind of statement that STMT_INFO represents. */ | |
15223 | static bool | |
15224 | aarch64_advsimd_ldp_stp_p (enum vect_cost_for_stmt kind, | |
15225 | stmt_vec_info stmt_info) | |
15226 | { | |
15227 | switch (kind) | |
15228 | { | |
15229 | case vector_load: | |
15230 | case vector_store: | |
15231 | case unaligned_load: | |
15232 | case unaligned_store: | |
15233 | break; | |
15234 | ||
15235 | default: | |
15236 | return false; | |
15237 | } | |
15238 | ||
15239 | if (aarch64_tune_params.extra_tuning_flags | |
15240 | & AARCH64_EXTRA_TUNE_NO_LDP_STP_QREGS) | |
15241 | return false; | |
15242 | ||
15243 | return is_gimple_assign (stmt_info->stmt); | |
15244 | } | |
15245 | ||
1205a8ca RS |
15246 | /* Return true if STMT_INFO is the second part of a two-statement multiply-add |
15247 | or multiply-subtract sequence that might be suitable for fusing into a | |
028059b4 RS |
15248 | single instruction. If VEC_FLAGS is zero, analyze the operation as |
15249 | a scalar one, otherwise analyze it as an operation on vectors with those | |
15250 | VEC_* flags. */ | |
1205a8ca | 15251 | static bool |
028059b4 RS |
15252 | aarch64_multiply_add_p (vec_info *vinfo, stmt_vec_info stmt_info, |
15253 | unsigned int vec_flags) | |
1205a8ca RS |
15254 | { |
15255 | gassign *assign = dyn_cast<gassign *> (stmt_info->stmt); | |
15256 | if (!assign) | |
15257 | return false; | |
15258 | tree_code code = gimple_assign_rhs_code (assign); | |
15259 | if (code != PLUS_EXPR && code != MINUS_EXPR) | |
15260 | return false; | |
15261 | ||
15262 | if (CONSTANT_CLASS_P (gimple_assign_rhs1 (assign)) | |
15263 | || CONSTANT_CLASS_P (gimple_assign_rhs2 (assign))) | |
15264 | return false; | |
15265 | ||
15266 | for (int i = 1; i < 3; ++i) | |
15267 | { | |
15268 | tree rhs = gimple_op (assign, i); | |
15269 | /* ??? Should we try to check for a single use as well? */ | |
15270 | if (TREE_CODE (rhs) != SSA_NAME) | |
15271 | continue; | |
15272 | ||
15273 | stmt_vec_info def_stmt_info = vinfo->lookup_def (rhs); | |
15274 | if (!def_stmt_info | |
15275 | || STMT_VINFO_DEF_TYPE (def_stmt_info) != vect_internal_def) | |
15276 | continue; | |
15277 | gassign *rhs_assign = dyn_cast<gassign *> (def_stmt_info->stmt); | |
15278 | if (!rhs_assign || gimple_assign_rhs_code (rhs_assign) != MULT_EXPR) | |
15279 | continue; | |
15280 | ||
028059b4 RS |
15281 | if (vec_flags & VEC_ADVSIMD) |
15282 | { | |
15283 | /* Scalar and SVE code can tie the result to any FMLA input (or none, | |
15284 | although that requires a MOVPRFX for SVE). However, Advanced SIMD | |
15285 | only supports MLA forms, so will require a move if the result | |
15286 | cannot be tied to the accumulator. The most important case in | |
15287 | which this is true is when the accumulator input is invariant. */ | |
15288 | rhs = gimple_op (assign, 3 - i); | |
15289 | if (TREE_CODE (rhs) != SSA_NAME) | |
15290 | return false; | |
15291 | def_stmt_info = vinfo->lookup_def (rhs); | |
15292 | if (!def_stmt_info | |
15293 | || STMT_VINFO_DEF_TYPE (def_stmt_info) == vect_external_def) | |
15294 | return false; | |
15295 | } | |
15296 | ||
1205a8ca RS |
15297 | return true; |
15298 | } | |
15299 | return false; | |
15300 | } | |
15301 | ||
26122469 RS |
15302 | /* We are considering implementing STMT_INFO using SVE. If STMT_INFO is an |
15303 | in-loop reduction that SVE supports directly, return its latency in cycles, | |
15304 | otherwise return zero. SVE_COSTS specifies the latencies of the relevant | |
15305 | instructions. */ | |
1282988b RS |
15306 | static unsigned int |
15307 | aarch64_sve_in_loop_reduction_latency (vec_info *vinfo, | |
15308 | stmt_vec_info stmt_info, | |
1282988b RS |
15309 | const sve_vec_cost *sve_costs) |
15310 | { | |
783d809f | 15311 | switch (vect_reduc_type (vinfo, stmt_info)) |
1282988b RS |
15312 | { |
15313 | case EXTRACT_LAST_REDUCTION: | |
15314 | return sve_costs->clast_cost; | |
15315 | ||
15316 | case FOLD_LEFT_REDUCTION: | |
26122469 | 15317 | switch (TYPE_MODE (TREE_TYPE (gimple_get_lhs (stmt_info->stmt)))) |
1282988b RS |
15318 | { |
15319 | case E_HFmode: | |
15320 | case E_BFmode: | |
15321 | return sve_costs->fadda_f16_cost; | |
15322 | ||
15323 | case E_SFmode: | |
15324 | return sve_costs->fadda_f32_cost; | |
15325 | ||
15326 | case E_DFmode: | |
15327 | return sve_costs->fadda_f64_cost; | |
15328 | ||
15329 | default: | |
15330 | break; | |
15331 | } | |
15332 | break; | |
15333 | } | |
15334 | ||
15335 | return 0; | |
15336 | } | |
15337 | ||
1205a8ca RS |
15338 | /* STMT_INFO describes a loop-carried operation in the original scalar code |
15339 | that we are considering implementing as a reduction. Return one of the | |
15340 | following values, depending on VEC_FLAGS: | |
15341 | ||
15342 | - If VEC_FLAGS is zero, return the loop carry latency of the original | |
15343 | scalar operation. | |
15344 | ||
15345 | - If VEC_FLAGS & VEC_ADVSIMD, return the loop carry latency of the | |
eb55b5b0 | 15346 | Advanced SIMD implementation. |
1205a8ca RS |
15347 | |
15348 | - If VEC_FLAGS & VEC_ANY_SVE, return the loop carry latency of the | |
26122469 | 15349 | SVE implementation. */ |
1205a8ca RS |
15350 | static unsigned int |
15351 | aarch64_in_loop_reduction_latency (vec_info *vinfo, stmt_vec_info stmt_info, | |
26122469 | 15352 | unsigned int vec_flags) |
1205a8ca RS |
15353 | { |
15354 | const cpu_vector_cost *vec_costs = aarch64_tune_params.vec_costs; | |
15355 | const sve_vec_cost *sve_costs = nullptr; | |
15356 | if (vec_flags & VEC_ANY_SVE) | |
15357 | sve_costs = aarch64_tune_params.vec_costs->sve; | |
15358 | ||
15359 | /* If the caller is asking for the SVE latency, check for forms of reduction | |
15360 | that only SVE can handle directly. */ | |
15361 | if (sve_costs) | |
15362 | { | |
15363 | unsigned int latency | |
26122469 | 15364 | = aarch64_sve_in_loop_reduction_latency (vinfo, stmt_info, sve_costs); |
1205a8ca RS |
15365 | if (latency) |
15366 | return latency; | |
15367 | } | |
15368 | ||
15369 | /* Handle scalar costs. */ | |
26122469 | 15370 | bool is_float = FLOAT_TYPE_P (TREE_TYPE (gimple_get_lhs (stmt_info->stmt))); |
1205a8ca RS |
15371 | if (vec_flags == 0) |
15372 | { | |
26122469 | 15373 | if (is_float) |
1205a8ca RS |
15374 | return vec_costs->scalar_fp_stmt_cost; |
15375 | return vec_costs->scalar_int_stmt_cost; | |
15376 | } | |
15377 | ||
15378 | /* Otherwise, the loop body just contains normal integer or FP operations, | |
15379 | with a vector reduction outside the loop. */ | |
15380 | const simd_vec_cost *simd_costs | |
15381 | = aarch64_simd_vec_costs_for_flags (vec_flags); | |
26122469 | 15382 | if (is_float) |
1205a8ca RS |
15383 | return simd_costs->fp_stmt_cost; |
15384 | return simd_costs->int_stmt_cost; | |
15385 | } | |
15386 | ||
ed17ad5e RS |
15387 | /* STMT_COST is the cost calculated by aarch64_builtin_vectorization_cost |
15388 | for STMT_INFO, which has cost kind KIND. If this is a scalar operation, | |
15389 | try to subdivide the target-independent categorization provided by KIND | |
15390 | to get a more accurate cost. */ | |
83d796d3 | 15391 | static fractional_cost |
ed17ad5e RS |
15392 | aarch64_detect_scalar_stmt_subtype (vec_info *vinfo, vect_cost_for_stmt kind, |
15393 | stmt_vec_info stmt_info, | |
83d796d3 | 15394 | fractional_cost stmt_cost) |
ed17ad5e RS |
15395 | { |
15396 | /* Detect an extension of a loaded value. In general, we'll be able to fuse | |
15397 | the extension with the load. */ | |
783d809f | 15398 | if (kind == scalar_stmt && vect_is_extending_load (vinfo, stmt_info)) |
ed17ad5e RS |
15399 | return 0; |
15400 | ||
15401 | return stmt_cost; | |
15402 | } | |
15403 | ||
e253bb8b RS |
15404 | /* STMT_COST is the cost calculated by aarch64_builtin_vectorization_cost |
15405 | for the vectorized form of STMT_INFO, which has cost kind KIND and which | |
15406 | when vectorized would operate on vector type VECTYPE. Try to subdivide | |
15407 | the target-independent categorization provided by KIND to get a more | |
15408 | accurate cost. WHERE specifies where the cost associated with KIND | |
15409 | occurs. */ | |
83d796d3 | 15410 | static fractional_cost |
1282988b | 15411 | aarch64_detect_vector_stmt_subtype (vec_info *vinfo, vect_cost_for_stmt kind, |
e253bb8b RS |
15412 | stmt_vec_info stmt_info, tree vectype, |
15413 | enum vect_cost_model_location where, | |
83d796d3 | 15414 | fractional_cost stmt_cost) |
e253bb8b RS |
15415 | { |
15416 | const simd_vec_cost *simd_costs = aarch64_simd_vec_costs (vectype); | |
1282988b RS |
15417 | const sve_vec_cost *sve_costs = nullptr; |
15418 | if (aarch64_sve_mode_p (TYPE_MODE (vectype))) | |
15419 | sve_costs = aarch64_tune_params.vec_costs->sve; | |
15420 | ||
e4180ab2 RS |
15421 | /* It's generally better to avoid costing inductions, since the induction |
15422 | will usually be hidden by other operations. This is particularly true | |
15423 | for things like COND_REDUCTIONS. */ | |
15424 | if (is_a<gphi *> (stmt_info->stmt)) | |
15425 | return 0; | |
15426 | ||
d1ff0847 RS |
15427 | /* Detect cases in which vec_to_scalar is describing the extraction of a |
15428 | vector element in preparation for a scalar store. The store itself is | |
15429 | costed separately. */ | |
783d809f | 15430 | if (vect_is_store_elt_extraction (kind, stmt_info)) |
d1ff0847 RS |
15431 | return simd_costs->store_elt_extra_cost; |
15432 | ||
78770e0e RS |
15433 | /* Detect SVE gather loads, which are costed as a single scalar_load |
15434 | for each element. We therefore need to divide the full-instruction | |
15435 | cost by the number of elements in the vector. */ | |
15436 | if (kind == scalar_load | |
15437 | && sve_costs | |
15438 | && STMT_VINFO_MEMORY_ACCESS_TYPE (stmt_info) == VMAT_GATHER_SCATTER) | |
15439 | { | |
15440 | unsigned int nunits = vect_nunits_for_cost (vectype); | |
15441 | if (GET_MODE_UNIT_BITSIZE (TYPE_MODE (vectype)) == 64) | |
15442 | return { sve_costs->gather_load_x64_cost, nunits }; | |
15443 | return { sve_costs->gather_load_x32_cost, nunits }; | |
15444 | } | |
15445 | ||
7c679969 RS |
15446 | /* Detect cases in which a scalar_store is really storing one element |
15447 | in a scatter operation. */ | |
15448 | if (kind == scalar_store | |
15449 | && sve_costs | |
15450 | && STMT_VINFO_MEMORY_ACCESS_TYPE (stmt_info) == VMAT_GATHER_SCATTER) | |
15451 | return sve_costs->scatter_store_elt_cost; | |
15452 | ||
1282988b RS |
15453 | /* Detect cases in which vec_to_scalar represents an in-loop reduction. */ |
15454 | if (kind == vec_to_scalar | |
15455 | && where == vect_body | |
15456 | && sve_costs) | |
15457 | { | |
15458 | unsigned int latency | |
26122469 | 15459 | = aarch64_sve_in_loop_reduction_latency (vinfo, stmt_info, sve_costs); |
1282988b RS |
15460 | if (latency) |
15461 | return latency; | |
15462 | } | |
e253bb8b RS |
15463 | |
15464 | /* Detect cases in which vec_to_scalar represents a single reduction | |
15465 | instruction like FADDP or MAXV. */ | |
15466 | if (kind == vec_to_scalar | |
15467 | && where == vect_epilogue | |
783d809f | 15468 | && vect_is_reduction (stmt_info)) |
e253bb8b RS |
15469 | switch (GET_MODE_INNER (TYPE_MODE (vectype))) |
15470 | { | |
15471 | case E_QImode: | |
15472 | return simd_costs->reduc_i8_cost; | |
15473 | ||
15474 | case E_HImode: | |
15475 | return simd_costs->reduc_i16_cost; | |
15476 | ||
15477 | case E_SImode: | |
15478 | return simd_costs->reduc_i32_cost; | |
15479 | ||
15480 | case E_DImode: | |
15481 | return simd_costs->reduc_i64_cost; | |
15482 | ||
15483 | case E_HFmode: | |
15484 | case E_BFmode: | |
15485 | return simd_costs->reduc_f16_cost; | |
15486 | ||
15487 | case E_SFmode: | |
15488 | return simd_costs->reduc_f32_cost; | |
15489 | ||
15490 | case E_DFmode: | |
15491 | return simd_costs->reduc_f64_cost; | |
15492 | ||
15493 | default: | |
15494 | break; | |
15495 | } | |
15496 | ||
15497 | /* Otherwise stick with the original categorization. */ | |
15498 | return stmt_cost; | |
15499 | } | |
15500 | ||
217ccab8 | 15501 | /* STMT_COST is the cost calculated by aarch64_builtin_vectorization_cost |
8b50d7a4 RS |
15502 | for STMT_INFO, which has cost kind KIND and which when vectorized would |
15503 | operate on vector type VECTYPE. Adjust the cost as necessary for SVE | |
15504 | targets. */ | |
83d796d3 | 15505 | static fractional_cost |
308bc496 | 15506 | aarch64_sve_adjust_stmt_cost (class vec_info *vinfo, vect_cost_for_stmt kind, |
8b50d7a4 | 15507 | stmt_vec_info stmt_info, tree vectype, |
83d796d3 | 15508 | fractional_cost stmt_cost) |
217ccab8 RS |
15509 | { |
15510 | /* Unlike vec_promote_demote, vector_stmt conversions do not change the | |
15511 | vector register size or number of units. Integer promotions of this | |
15512 | type therefore map to SXT[BHW] or UXT[BHW]. | |
15513 | ||
15514 | Most loads have extending forms that can do the sign or zero extension | |
15515 | on the fly. Optimistically assume that a load followed by an extension | |
15516 | will fold to this form during combine, and that the extension therefore | |
15517 | comes for free. */ | |
783d809f | 15518 | if (kind == vector_stmt && vect_is_extending_load (vinfo, stmt_info)) |
217ccab8 RS |
15519 | stmt_cost = 0; |
15520 | ||
2d56600c RS |
15521 | /* For similar reasons, vector_stmt integer truncations are a no-op, |
15522 | because we can just ignore the unused upper bits of the source. */ | |
783d809f | 15523 | if (kind == vector_stmt && vect_is_integer_truncation (stmt_info)) |
2d56600c RS |
15524 | stmt_cost = 0; |
15525 | ||
8b50d7a4 RS |
15526 | /* Advanced SIMD can load and store pairs of registers using LDP and STP, |
15527 | but there are no equivalent instructions for SVE. This means that | |
15528 | (all other things being equal) 128-bit SVE needs twice as many load | |
15529 | and store instructions as Advanced SIMD in order to process vector pairs. | |
15530 | ||
15531 | Also, scalar code can often use LDP and STP to access pairs of values, | |
15532 | so it is too simplistic to say that one SVE load or store replaces | |
15533 | VF scalar loads and stores. | |
15534 | ||
15535 | Ideally we would account for this in the scalar and Advanced SIMD | |
15536 | costs by making suitable load/store pairs as cheap as a single | |
15537 | load/store. However, that would be a very invasive change and in | |
15538 | practice it tends to stress other parts of the cost model too much. | |
15539 | E.g. stores of scalar constants currently count just a store, | |
15540 | whereas stores of vector constants count a store and a vec_init. | |
15541 | This is an artificial distinction for AArch64, where stores of | |
15542 | nonzero scalar constants need the same kind of register invariant | |
15543 | as vector stores. | |
15544 | ||
15545 | An alternative would be to double the cost of any SVE loads and stores | |
15546 | that could be paired in Advanced SIMD (and possibly also paired in | |
15547 | scalar code). But this tends to stress other parts of the cost model | |
15548 | in the same way. It also means that we can fall back to Advanced SIMD | |
15549 | even if full-loop predication would have been useful. | |
15550 | ||
15551 | Here we go for a more conservative version: double the costs of SVE | |
15552 | loads and stores if one iteration of the scalar loop processes enough | |
15553 | elements for it to use a whole number of Advanced SIMD LDP or STP | |
15554 | instructions. This makes it very likely that the VF would be 1 for | |
15555 | Advanced SIMD, and so no epilogue should be needed. */ | |
15556 | if (STMT_VINFO_GROUPED_ACCESS (stmt_info)) | |
15557 | { | |
15558 | stmt_vec_info first = DR_GROUP_FIRST_ELEMENT (stmt_info); | |
15559 | unsigned int count = DR_GROUP_SIZE (first) - DR_GROUP_GAP (first); | |
15560 | unsigned int elt_bits = GET_MODE_UNIT_BITSIZE (TYPE_MODE (vectype)); | |
15561 | if (multiple_p (count * elt_bits, 256) | |
15562 | && aarch64_advsimd_ldp_stp_p (kind, stmt_info)) | |
15563 | stmt_cost *= 2; | |
15564 | } | |
15565 | ||
217ccab8 RS |
15566 | return stmt_cost; |
15567 | } | |
15568 | ||
b1a831f0 RS |
15569 | /* STMT_COST is the cost calculated for STMT_INFO, which has cost kind KIND |
15570 | and which when vectorized would operate on vector type VECTYPE. Add the | |
15571 | cost of any embedded operations. */ | |
83d796d3 | 15572 | static fractional_cost |
b1a831f0 | 15573 | aarch64_adjust_stmt_cost (vect_cost_for_stmt kind, stmt_vec_info stmt_info, |
83d796d3 | 15574 | tree vectype, fractional_cost stmt_cost) |
b1a831f0 RS |
15575 | { |
15576 | if (vectype) | |
15577 | { | |
15578 | const simd_vec_cost *simd_costs = aarch64_simd_vec_costs (vectype); | |
15579 | ||
15580 | /* Detect cases in which a vector load or store represents an | |
15581 | LD[234] or ST[234] instruction. */ | |
15582 | switch (aarch64_ld234_st234_vectors (kind, stmt_info)) | |
15583 | { | |
15584 | case 2: | |
15585 | stmt_cost += simd_costs->ld2_st2_permute_cost; | |
15586 | break; | |
15587 | ||
15588 | case 3: | |
15589 | stmt_cost += simd_costs->ld3_st3_permute_cost; | |
15590 | break; | |
15591 | ||
15592 | case 4: | |
15593 | stmt_cost += simd_costs->ld4_st4_permute_cost; | |
15594 | break; | |
15595 | } | |
99f94ae5 RS |
15596 | |
15597 | if (kind == vector_stmt || kind == vec_to_scalar) | |
783d809f | 15598 | if (tree cmp_type = vect_embedded_comparison_type (stmt_info)) |
99f94ae5 RS |
15599 | { |
15600 | if (FLOAT_TYPE_P (cmp_type)) | |
15601 | stmt_cost += simd_costs->fp_stmt_cost; | |
15602 | else | |
15603 | stmt_cost += simd_costs->int_stmt_cost; | |
15604 | } | |
b1a831f0 RS |
15605 | } |
15606 | ||
99f94ae5 | 15607 | if (kind == scalar_stmt) |
783d809f | 15608 | if (tree cmp_type = vect_embedded_comparison_type (stmt_info)) |
99f94ae5 RS |
15609 | { |
15610 | if (FLOAT_TYPE_P (cmp_type)) | |
15611 | stmt_cost += aarch64_tune_params.vec_costs->scalar_fp_stmt_cost; | |
15612 | else | |
15613 | stmt_cost += aarch64_tune_params.vec_costs->scalar_int_stmt_cost; | |
15614 | } | |
15615 | ||
b1a831f0 RS |
15616 | return stmt_cost; |
15617 | } | |
15618 | ||
87fcff96 RS |
15619 | /* COUNT, KIND and STMT_INFO are the same as for vector_costs::add_stmt_cost |
15620 | and they describe an operation in the body of a vector loop. Record issue | |
15621 | information relating to the vector operation in OPS. */ | |
d43fc1df RS |
15622 | void |
15623 | aarch64_vector_costs::count_ops (unsigned int count, vect_cost_for_stmt kind, | |
87fcff96 RS |
15624 | stmt_vec_info stmt_info, |
15625 | aarch64_vec_op_count *ops) | |
1205a8ca | 15626 | { |
15aba5a6 RS |
15627 | const aarch64_base_vec_issue_info *base_issue = ops->base_issue_info (); |
15628 | if (!base_issue) | |
1205a8ca | 15629 | return; |
15aba5a6 RS |
15630 | const aarch64_simd_vec_issue_info *simd_issue = ops->simd_issue_info (); |
15631 | const aarch64_sve_vec_issue_info *sve_issue = ops->sve_issue_info (); | |
1205a8ca RS |
15632 | |
15633 | /* Calculate the minimum cycles per iteration imposed by a reduction | |
15634 | operation. */ | |
6756706e | 15635 | if ((kind == scalar_stmt || kind == vector_stmt || kind == vec_to_scalar) |
783d809f | 15636 | && vect_is_reduction (stmt_info)) |
1205a8ca RS |
15637 | { |
15638 | unsigned int base | |
87fcff96 | 15639 | = aarch64_in_loop_reduction_latency (m_vinfo, stmt_info, m_vec_flags); |
1205a8ca | 15640 | |
87fcff96 RS |
15641 | /* ??? Ideally we'd do COUNT reductions in parallel, but unfortunately |
15642 | that's not yet the case. */ | |
15643 | ops->reduction_latency = MAX (ops->reduction_latency, base * count); | |
1205a8ca RS |
15644 | } |
15645 | ||
15646 | /* Assume that multiply-adds will become a single operation. */ | |
87fcff96 | 15647 | if (stmt_info && aarch64_multiply_add_p (m_vinfo, stmt_info, m_vec_flags)) |
1205a8ca RS |
15648 | return; |
15649 | ||
1205a8ca RS |
15650 | /* Count the basic operation cost associated with KIND. */ |
15651 | switch (kind) | |
15652 | { | |
15653 | case cond_branch_taken: | |
15654 | case cond_branch_not_taken: | |
15655 | case vector_gather_load: | |
15656 | case vector_scatter_store: | |
15657 | /* We currently don't expect these to be used in a loop body. */ | |
15658 | break; | |
15659 | ||
15660 | case vec_perm: | |
15661 | case vec_promote_demote: | |
15662 | case vec_construct: | |
15663 | case vec_to_scalar: | |
15664 | case scalar_to_vec: | |
1205a8ca RS |
15665 | case vector_stmt: |
15666 | case scalar_stmt: | |
87fcff96 | 15667 | ops->general_ops += count; |
1205a8ca RS |
15668 | break; |
15669 | ||
15670 | case scalar_load: | |
15671 | case vector_load: | |
15672 | case unaligned_load: | |
87fcff96 RS |
15673 | ops->loads += count; |
15674 | if (m_vec_flags || FLOAT_TYPE_P (aarch64_dr_type (stmt_info))) | |
15675 | ops->general_ops += base_issue->fp_simd_load_general_ops * count; | |
1205a8ca RS |
15676 | break; |
15677 | ||
15678 | case vector_store: | |
15679 | case unaligned_store: | |
15680 | case scalar_store: | |
87fcff96 RS |
15681 | ops->stores += count; |
15682 | if (m_vec_flags || FLOAT_TYPE_P (aarch64_dr_type (stmt_info))) | |
15683 | ops->general_ops += base_issue->fp_simd_store_general_ops * count; | |
1205a8ca RS |
15684 | break; |
15685 | } | |
15686 | ||
15687 | /* Add any embedded comparison operations. */ | |
15688 | if ((kind == scalar_stmt || kind == vector_stmt || kind == vec_to_scalar) | |
783d809f | 15689 | && vect_embedded_comparison_type (stmt_info)) |
87fcff96 | 15690 | ops->general_ops += count; |
1205a8ca | 15691 | |
87fcff96 | 15692 | /* COND_REDUCTIONS need two sets of VEC_COND_EXPRs, whereas so far we |
1205a8ca | 15693 | have only accounted for one. */ |
87fcff96 RS |
15694 | if ((kind == vector_stmt || kind == vec_to_scalar) |
15695 | && vect_reduc_type (m_vinfo, stmt_info) == COND_REDUCTION) | |
15696 | ops->general_ops += count; | |
1205a8ca RS |
15697 | |
15698 | /* Count the predicate operations needed by an SVE comparison. */ | |
15699 | if (sve_issue && (kind == vector_stmt || kind == vec_to_scalar)) | |
783d809f | 15700 | if (tree type = vect_comparison_type (stmt_info)) |
1205a8ca RS |
15701 | { |
15702 | unsigned int base = (FLOAT_TYPE_P (type) | |
15703 | ? sve_issue->fp_cmp_pred_ops | |
15704 | : sve_issue->int_cmp_pred_ops); | |
87fcff96 | 15705 | ops->pred_ops += base * count; |
1205a8ca RS |
15706 | } |
15707 | ||
15708 | /* Add any extra overhead associated with LD[234] and ST[234] operations. */ | |
15709 | if (simd_issue) | |
15710 | switch (aarch64_ld234_st234_vectors (kind, stmt_info)) | |
15711 | { | |
15712 | case 2: | |
87fcff96 | 15713 | ops->general_ops += simd_issue->ld2_st2_general_ops * count; |
1205a8ca RS |
15714 | break; |
15715 | ||
15716 | case 3: | |
87fcff96 | 15717 | ops->general_ops += simd_issue->ld3_st3_general_ops * count; |
1205a8ca RS |
15718 | break; |
15719 | ||
15720 | case 4: | |
87fcff96 | 15721 | ops->general_ops += simd_issue->ld4_st4_general_ops * count; |
1205a8ca RS |
15722 | break; |
15723 | } | |
15724 | ||
15725 | /* Add any overhead associated with gather loads and scatter stores. */ | |
15726 | if (sve_issue | |
15727 | && (kind == scalar_load || kind == scalar_store) | |
15728 | && STMT_VINFO_MEMORY_ACCESS_TYPE (stmt_info) == VMAT_GATHER_SCATTER) | |
15729 | { | |
15730 | unsigned int pairs = CEIL (count, 2); | |
15aba5a6 | 15731 | ops->pred_ops += sve_issue->gather_scatter_pair_pred_ops * pairs; |
1205a8ca RS |
15732 | ops->general_ops += sve_issue->gather_scatter_pair_general_ops * pairs; |
15733 | } | |
15734 | } | |
15735 | ||
6239dd05 RS |
15736 | unsigned |
15737 | aarch64_vector_costs::add_stmt_cost (int count, vect_cost_for_stmt kind, | |
15738 | stmt_vec_info stmt_info, tree vectype, | |
15739 | int misalign, | |
15740 | vect_cost_model_location where) | |
8990e73a | 15741 | { |
f837785c RS |
15742 | fractional_cost stmt_cost |
15743 | = aarch64_builtin_vectorization_cost (kind, vectype, misalign); | |
3b924b0d | 15744 | |
f837785c RS |
15745 | bool in_inner_loop_p = (where == vect_body |
15746 | && stmt_info | |
6239dd05 | 15747 | && stmt_in_inner_loop_p (m_vinfo, stmt_info)); |
9690309b | 15748 | |
f837785c | 15749 | /* Do one-time initialization based on the vinfo. */ |
6239dd05 | 15750 | loop_vec_info loop_vinfo = dyn_cast<loop_vec_info> (m_vinfo); |
d43fc1df | 15751 | if (!m_analyzed_vinfo && aarch64_use_new_vector_costs_p ()) |
f837785c RS |
15752 | { |
15753 | if (loop_vinfo) | |
d43fc1df RS |
15754 | analyze_loop_vinfo (loop_vinfo); |
15755 | ||
15756 | m_analyzed_vinfo = true; | |
f837785c RS |
15757 | } |
15758 | ||
15759 | /* Try to get a more accurate cost by looking at STMT_INFO instead | |
15760 | of just looking at KIND. */ | |
15761 | if (stmt_info && aarch64_use_new_vector_costs_p ()) | |
15762 | { | |
f837785c RS |
15763 | /* If we scalarize a strided store, the vectorizer costs one |
15764 | vec_to_scalar for each element. However, we can store the first | |
15765 | element using an FP store without a separate extract step. */ | |
15766 | if (vect_is_store_elt_extraction (kind, stmt_info)) | |
15767 | count -= 1; | |
15768 | ||
d43fc1df RS |
15769 | stmt_cost = aarch64_detect_scalar_stmt_subtype (m_vinfo, kind, |
15770 | stmt_info, stmt_cost); | |
f837785c | 15771 | |
d43fc1df | 15772 | if (vectype && m_vec_flags) |
6239dd05 | 15773 | stmt_cost = aarch64_detect_vector_stmt_subtype (m_vinfo, kind, |
f837785c RS |
15774 | stmt_info, vectype, |
15775 | where, stmt_cost); | |
15776 | } | |
15777 | ||
15778 | /* Do any SVE-specific adjustments to the cost. */ | |
15779 | if (stmt_info && vectype && aarch64_sve_mode_p (TYPE_MODE (vectype))) | |
6239dd05 | 15780 | stmt_cost = aarch64_sve_adjust_stmt_cost (m_vinfo, kind, stmt_info, |
f837785c RS |
15781 | vectype, stmt_cost); |
15782 | ||
15783 | if (stmt_info && aarch64_use_new_vector_costs_p ()) | |
15784 | { | |
15785 | /* Account for any extra "embedded" costs that apply additively | |
15786 | to the base cost calculated above. */ | |
15787 | stmt_cost = aarch64_adjust_stmt_cost (kind, stmt_info, vectype, | |
15788 | stmt_cost); | |
15789 | ||
15790 | /* If we're recording a nonzero vector loop body cost for the | |
15791 | innermost loop, also estimate the operations that would need | |
15792 | to be issued by all relevant implementations of the loop. */ | |
f837785c | 15793 | if (loop_vinfo |
6756706e | 15794 | && (m_costing_for_scalar || where == vect_body) |
f837785c | 15795 | && (!LOOP_VINFO_LOOP (loop_vinfo)->inner || in_inner_loop_p) |
f837785c | 15796 | && stmt_cost != 0) |
87fcff96 RS |
15797 | for (auto &ops : m_ops) |
15798 | count_ops (count, kind, stmt_info, &ops); | |
b1a831f0 | 15799 | |
f837785c RS |
15800 | /* If we're applying the SVE vs. Advanced SIMD unrolling heuristic, |
15801 | estimate the number of statements in the unrolled Advanced SIMD | |
15802 | loop. For simplicitly, we assume that one iteration of the | |
15803 | Advanced SIMD loop would need the same number of statements | |
15804 | as one iteration of the SVE loop. */ | |
d43fc1df RS |
15805 | if (where == vect_body && m_unrolled_advsimd_niters) |
15806 | m_unrolled_advsimd_stmts += count * m_unrolled_advsimd_niters; | |
f837785c | 15807 | } |
6239dd05 | 15808 | return record_stmt_cost (stmt_info, where, (count * stmt_cost).ceil ()); |
8990e73a TB |
15809 | } |
15810 | ||
c6c5c5eb RS |
15811 | /* Return true if (a) we're applying the Advanced SIMD vs. SVE unrolling |
15812 | heuristic described above m_unrolled_advsimd_niters and (b) the heuristic | |
15813 | says that we should prefer the Advanced SIMD loop. */ | |
15814 | bool | |
15815 | aarch64_vector_costs::prefer_unrolled_loop () const | |
15816 | { | |
15817 | if (!m_unrolled_advsimd_stmts) | |
15818 | return false; | |
15819 | ||
15820 | if (dump_enabled_p ()) | |
15821 | dump_printf_loc (MSG_NOTE, vect_location, "Number of insns in" | |
15822 | " unrolled Advanced SIMD loop = %d\n", | |
15823 | m_unrolled_advsimd_stmts); | |
15824 | ||
15825 | /* The balance here is tricky. On the one hand, we can't be sure whether | |
15826 | the code is vectorizable with Advanced SIMD or not. However, even if | |
15827 | it isn't vectorizable with Advanced SIMD, there's a possibility that | |
15828 | the scalar code could also be unrolled. Some of the code might then | |
15829 | benefit from SLP, or from using LDP and STP. We therefore apply | |
15830 | the heuristic regardless of can_use_advsimd_p. */ | |
15831 | return (m_unrolled_advsimd_stmts | |
15832 | && (m_unrolled_advsimd_stmts | |
15833 | <= (unsigned int) param_max_completely_peeled_insns)); | |
15834 | } | |
15835 | ||
d43fc1df RS |
15836 | /* Subroutine of adjust_body_cost for handling SVE. Use ISSUE_INFO to work out |
15837 | how fast the SVE code can be issued and compare it to the equivalent value | |
15838 | for scalar code (SCALAR_CYCLES_PER_ITER). If COULD_USE_ADVSIMD is true, | |
15839 | also compare it to the issue rate of Advanced SIMD code | |
15840 | (ADVSIMD_CYCLES_PER_ITER). | |
b585f011 | 15841 | |
d43fc1df RS |
15842 | ORIG_BODY_COST is the cost originally passed to adjust_body_cost and |
15843 | *BODY_COST is the current value of the adjusted cost. *SHOULD_DISPARAGE | |
15844 | is true if we think the loop body is too expensive. */ | |
b585f011 | 15845 | |
d43fc1df RS |
15846 | fractional_cost |
15847 | aarch64_vector_costs:: | |
1a5288fe | 15848 | adjust_body_cost_sve (const aarch64_vec_op_count *ops, |
d43fc1df | 15849 | fractional_cost scalar_cycles_per_iter, |
c6c5c5eb RS |
15850 | unsigned int orig_body_cost, unsigned int *body_cost, |
15851 | bool *should_disparage) | |
b585f011 | 15852 | { |
a82ffd43 RS |
15853 | if (dump_enabled_p ()) |
15854 | ops->dump (); | |
048039c4 | 15855 | |
a82ffd43 RS |
15856 | fractional_cost sve_pred_cycles_per_iter = ops->min_pred_cycles_per_iter (); |
15857 | fractional_cost sve_cycles_per_iter = ops->min_cycles_per_iter (); | |
b585f011 RS |
15858 | |
15859 | /* If the scalar version of the loop could issue at least as | |
15860 | quickly as the predicate parts of the SVE loop, make the SVE loop | |
15861 | prohibitively expensive. In this case vectorization is adding an | |
15862 | overhead that the original scalar code didn't have. | |
15863 | ||
15864 | This is mostly intended to detect cases in which WHILELOs dominate | |
15865 | for very tight loops, which is something that normal latency-based | |
15866 | costs would not model. Adding this kind of cliffedge would be | |
15867 | too drastic for scalar_cycles_per_iter vs. sve_cycles_per_iter; | |
15868 | code in the caller handles that case in a more conservative way. */ | |
a82ffd43 | 15869 | fractional_cost sve_estimate = sve_pred_cycles_per_iter + 1; |
b585f011 RS |
15870 | if (scalar_cycles_per_iter < sve_estimate) |
15871 | { | |
15872 | unsigned int min_cost | |
15873 | = orig_body_cost * estimated_poly_value (BYTES_PER_SVE_VECTOR); | |
15874 | if (*body_cost < min_cost) | |
15875 | { | |
15876 | if (dump_enabled_p ()) | |
15877 | dump_printf_loc (MSG_NOTE, vect_location, | |
15878 | "Increasing body cost to %d because the" | |
15879 | " scalar code could issue within the limit" | |
15880 | " imposed by predicate operations\n", | |
15881 | min_cost); | |
15882 | *body_cost = min_cost; | |
15883 | *should_disparage = true; | |
15884 | } | |
15885 | } | |
15886 | ||
b585f011 RS |
15887 | return sve_cycles_per_iter; |
15888 | } | |
15889 | ||
d43fc1df RS |
15890 | /* BODY_COST is the cost of a vector loop body. Adjust the cost as necessary |
15891 | and return the new cost. */ | |
15892 | unsigned int | |
6756706e RS |
15893 | aarch64_vector_costs:: |
15894 | adjust_body_cost (loop_vec_info loop_vinfo, | |
15895 | const aarch64_vector_costs *scalar_costs, | |
15896 | unsigned int body_cost) | |
3b924b0d | 15897 | { |
1a5288fe RS |
15898 | if (scalar_costs->m_ops.is_empty () || m_ops.is_empty ()) |
15899 | return body_cost; | |
15900 | ||
15901 | const auto &scalar_ops = scalar_costs->m_ops[0]; | |
15902 | const auto &vector_ops = m_ops[0]; | |
6756706e | 15903 | unsigned int estimated_vf = vect_vf_for_cost (loop_vinfo); |
3b924b0d | 15904 | unsigned int orig_body_cost = body_cost; |
1205a8ca RS |
15905 | bool should_disparage = false; |
15906 | ||
15907 | if (dump_enabled_p ()) | |
15908 | dump_printf_loc (MSG_NOTE, vect_location, | |
15909 | "Original vector body cost = %d\n", body_cost); | |
3b924b0d | 15910 | |
83d796d3 | 15911 | fractional_cost scalar_cycles_per_iter |
a82ffd43 | 15912 | = scalar_ops.min_cycles_per_iter () * estimated_vf; |
83d796d3 | 15913 | |
a82ffd43 | 15914 | fractional_cost vector_cycles_per_iter = vector_ops.min_cycles_per_iter (); |
1205a8ca RS |
15915 | |
15916 | if (dump_enabled_p ()) | |
15917 | { | |
d43fc1df | 15918 | if (IN_RANGE (m_num_vector_iterations, 0, 65536)) |
1205a8ca RS |
15919 | dump_printf_loc (MSG_NOTE, vect_location, |
15920 | "Vector loop iterates at most %wd times\n", | |
d43fc1df | 15921 | m_num_vector_iterations); |
1205a8ca | 15922 | dump_printf_loc (MSG_NOTE, vect_location, "Scalar issue estimate:\n"); |
6756706e | 15923 | scalar_ops.dump (); |
1205a8ca | 15924 | dump_printf_loc (MSG_NOTE, vect_location, |
6756706e RS |
15925 | " estimated cycles per vector iteration" |
15926 | " (for VF %d) = %f\n", | |
15927 | estimated_vf, scalar_cycles_per_iter.as_double ()); | |
1205a8ca RS |
15928 | } |
15929 | ||
1a5288fe | 15930 | if (vector_ops.sve_issue_info ()) |
1205a8ca | 15931 | { |
1205a8ca | 15932 | if (dump_enabled_p ()) |
c6c5c5eb | 15933 | dump_printf_loc (MSG_NOTE, vect_location, "SVE issue estimate:\n"); |
b585f011 | 15934 | vector_cycles_per_iter |
1a5288fe | 15935 | = adjust_body_cost_sve (&vector_ops, scalar_cycles_per_iter, |
d43fc1df | 15936 | orig_body_cost, &body_cost, &should_disparage); |
048039c4 RS |
15937 | |
15938 | if (aarch64_tune_params.vec_costs == &neoverse512tvb_vector_cost) | |
15939 | { | |
15940 | /* Also take Neoverse V1 tuning into account, doubling the | |
15941 | scalar and Advanced SIMD estimates to account for the | |
15942 | doubling in SVE vector length. */ | |
15943 | if (dump_enabled_p ()) | |
15944 | dump_printf_loc (MSG_NOTE, vect_location, | |
15945 | "Neoverse V1 estimate:\n"); | |
2e1886ea RS |
15946 | auto vf_factor = m_ops[1].vf_factor (); |
15947 | adjust_body_cost_sve (&m_ops[1], scalar_cycles_per_iter * vf_factor, | |
c6c5c5eb | 15948 | orig_body_cost, &body_cost, &should_disparage); |
048039c4 | 15949 | } |
1205a8ca | 15950 | } |
6756706e RS |
15951 | else |
15952 | { | |
15953 | if (dump_enabled_p ()) | |
15954 | { | |
15955 | dump_printf_loc (MSG_NOTE, vect_location, | |
15956 | "Vector issue estimate:\n"); | |
1a5288fe | 15957 | vector_ops.dump (); |
6756706e RS |
15958 | } |
15959 | } | |
1205a8ca RS |
15960 | |
15961 | /* Decide whether to stick to latency-based costs or whether to try to | |
15962 | take issue rates into account. */ | |
15963 | unsigned int threshold = aarch64_loop_vect_issue_rate_niters; | |
d43fc1df | 15964 | if (m_vec_flags & VEC_ANY_SVE) |
1205a8ca RS |
15965 | threshold = CEIL (threshold, aarch64_estimated_sve_vq ()); |
15966 | ||
d43fc1df RS |
15967 | if (m_num_vector_iterations >= 1 |
15968 | && m_num_vector_iterations < threshold) | |
1205a8ca RS |
15969 | { |
15970 | if (dump_enabled_p ()) | |
15971 | dump_printf_loc (MSG_NOTE, vect_location, | |
15972 | "Low iteration count, so using pure latency" | |
15973 | " costs\n"); | |
15974 | } | |
15975 | /* Increase the cost of the vector code if it looks like the scalar code | |
15976 | could issue more quickly. These values are only rough estimates, | |
15977 | so minor differences should only result in minor changes. */ | |
15978 | else if (scalar_cycles_per_iter < vector_cycles_per_iter) | |
15979 | { | |
83d796d3 RS |
15980 | body_cost = fractional_cost::scale (body_cost, vector_cycles_per_iter, |
15981 | scalar_cycles_per_iter); | |
1205a8ca RS |
15982 | if (dump_enabled_p ()) |
15983 | dump_printf_loc (MSG_NOTE, vect_location, | |
15984 | "Increasing body cost to %d because scalar code" | |
15985 | " would issue more quickly\n", body_cost); | |
15986 | } | |
15987 | /* In general, it's expected that the proposed vector code would be able | |
15988 | to issue more quickly than the original scalar code. This should | |
15989 | already be reflected to some extent in the latency-based costs. | |
15990 | ||
15991 | However, the latency-based costs effectively assume that the scalar | |
15992 | code and the vector code execute serially, which tends to underplay | |
15993 | one important case: if the real (non-serialized) execution time of | |
15994 | a scalar iteration is dominated by loop-carried dependencies, | |
15995 | and if the vector code is able to reduce both the length of | |
15996 | the loop-carried dependencies *and* the number of cycles needed | |
15997 | to issue the code in general, we can be more confident that the | |
15998 | vector code is an improvement, even if adding the other (non-loop-carried) | |
15999 | latencies tends to hide this saving. We therefore reduce the cost of the | |
16000 | vector loop body in proportion to the saving. */ | |
1a5288fe | 16001 | else if (scalar_ops.reduction_latency > vector_ops.reduction_latency |
6756706e | 16002 | && scalar_ops.reduction_latency == scalar_cycles_per_iter |
1205a8ca RS |
16003 | && scalar_cycles_per_iter > vector_cycles_per_iter |
16004 | && !should_disparage) | |
16005 | { | |
83d796d3 RS |
16006 | body_cost = fractional_cost::scale (body_cost, vector_cycles_per_iter, |
16007 | scalar_cycles_per_iter); | |
1205a8ca RS |
16008 | if (dump_enabled_p ()) |
16009 | dump_printf_loc (MSG_NOTE, vect_location, | |
16010 | "Decreasing body cost to %d account for smaller" | |
16011 | " reduction latency\n", body_cost); | |
16012 | } | |
16013 | ||
3b924b0d RS |
16014 | return body_cost; |
16015 | } | |
16016 | ||
6239dd05 | 16017 | void |
6756706e | 16018 | aarch64_vector_costs::finish_cost (const vector_costs *uncast_scalar_costs) |
50a525b5 | 16019 | { |
6756706e RS |
16020 | auto *scalar_costs |
16021 | = static_cast<const aarch64_vector_costs *> (uncast_scalar_costs); | |
d43fc1df RS |
16022 | loop_vec_info loop_vinfo = dyn_cast<loop_vec_info> (m_vinfo); |
16023 | if (loop_vinfo | |
16024 | && m_vec_flags | |
3b924b0d | 16025 | && aarch64_use_new_vector_costs_p ()) |
6756706e RS |
16026 | m_costs[vect_body] = adjust_body_cost (loop_vinfo, scalar_costs, |
16027 | m_costs[vect_body]); | |
50a525b5 | 16028 | |
0612883d | 16029 | vector_costs::finish_cost (scalar_costs); |
50a525b5 RS |
16030 | } |
16031 | ||
c6c5c5eb RS |
16032 | bool |
16033 | aarch64_vector_costs:: | |
16034 | better_main_loop_than_p (const vector_costs *uncast_other) const | |
16035 | { | |
16036 | auto other = static_cast<const aarch64_vector_costs *> (uncast_other); | |
16037 | ||
16038 | auto this_loop_vinfo = as_a<loop_vec_info> (this->m_vinfo); | |
16039 | auto other_loop_vinfo = as_a<loop_vec_info> (other->m_vinfo); | |
16040 | ||
16041 | if (dump_enabled_p ()) | |
16042 | dump_printf_loc (MSG_NOTE, vect_location, | |
16043 | "Comparing two main loops (%s at VF %d vs %s at VF %d)\n", | |
16044 | GET_MODE_NAME (this_loop_vinfo->vector_mode), | |
16045 | vect_vf_for_cost (this_loop_vinfo), | |
16046 | GET_MODE_NAME (other_loop_vinfo->vector_mode), | |
16047 | vect_vf_for_cost (other_loop_vinfo)); | |
16048 | ||
16049 | /* Apply the unrolling heuristic described above | |
16050 | m_unrolled_advsimd_niters. */ | |
16051 | if (bool (m_unrolled_advsimd_stmts) | |
16052 | != bool (other->m_unrolled_advsimd_stmts)) | |
16053 | { | |
16054 | bool this_prefer_unrolled = this->prefer_unrolled_loop (); | |
16055 | bool other_prefer_unrolled = other->prefer_unrolled_loop (); | |
16056 | if (this_prefer_unrolled != other_prefer_unrolled) | |
16057 | { | |
16058 | if (dump_enabled_p ()) | |
16059 | dump_printf_loc (MSG_NOTE, vect_location, | |
16060 | "Preferring Advanced SIMD loop because" | |
16061 | " it can be unrolled\n"); | |
16062 | return other_prefer_unrolled; | |
16063 | } | |
16064 | } | |
16065 | ||
16066 | for (unsigned int i = 0; i < m_ops.length (); ++i) | |
16067 | { | |
16068 | if (dump_enabled_p ()) | |
16069 | { | |
16070 | if (i) | |
16071 | dump_printf_loc (MSG_NOTE, vect_location, | |
16072 | "Reconsidering with subtuning %d\n", i); | |
16073 | dump_printf_loc (MSG_NOTE, vect_location, | |
16074 | "Issue info for %s loop:\n", | |
16075 | GET_MODE_NAME (this_loop_vinfo->vector_mode)); | |
16076 | this->m_ops[i].dump (); | |
16077 | dump_printf_loc (MSG_NOTE, vect_location, | |
16078 | "Issue info for %s loop:\n", | |
16079 | GET_MODE_NAME (other_loop_vinfo->vector_mode)); | |
16080 | other->m_ops[i].dump (); | |
16081 | } | |
16082 | ||
16083 | auto this_estimated_vf = (vect_vf_for_cost (this_loop_vinfo) | |
16084 | * this->m_ops[i].vf_factor ()); | |
16085 | auto other_estimated_vf = (vect_vf_for_cost (other_loop_vinfo) | |
16086 | * other->m_ops[i].vf_factor ()); | |
16087 | ||
16088 | /* If it appears that one loop could process the same amount of data | |
16089 | in fewer cycles, prefer that loop over the other one. */ | |
16090 | fractional_cost this_cost | |
16091 | = this->m_ops[i].min_cycles_per_iter () * other_estimated_vf; | |
16092 | fractional_cost other_cost | |
16093 | = other->m_ops[i].min_cycles_per_iter () * this_estimated_vf; | |
16094 | if (dump_enabled_p ()) | |
16095 | { | |
16096 | dump_printf_loc (MSG_NOTE, vect_location, | |
16097 | "Weighted cycles per iteration of %s loop ~= %f\n", | |
16098 | GET_MODE_NAME (this_loop_vinfo->vector_mode), | |
16099 | this_cost.as_double ()); | |
16100 | dump_printf_loc (MSG_NOTE, vect_location, | |
16101 | "Weighted cycles per iteration of %s loop ~= %f\n", | |
16102 | GET_MODE_NAME (other_loop_vinfo->vector_mode), | |
16103 | other_cost.as_double ()); | |
16104 | } | |
16105 | if (this_cost != other_cost) | |
16106 | { | |
16107 | if (dump_enabled_p ()) | |
16108 | dump_printf_loc (MSG_NOTE, vect_location, | |
16109 | "Preferring loop with lower cycles" | |
16110 | " per iteration\n"); | |
16111 | return this_cost < other_cost; | |
16112 | } | |
16113 | ||
16114 | /* If the issue rate of SVE code is limited by predicate operations | |
16115 | (i.e. if sve_pred_cycles_per_iter > sve_nonpred_cycles_per_iter), | |
16116 | and if Advanced SIMD code could issue within the limit imposed | |
16117 | by the predicate operations, the predicate operations are adding an | |
16118 | overhead that the original code didn't have and so we should prefer | |
16119 | the Advanced SIMD version. */ | |
16120 | auto better_pred_limit_p = [](const aarch64_vec_op_count &a, | |
16121 | const aarch64_vec_op_count &b) -> bool | |
16122 | { | |
16123 | if (a.pred_ops == 0 | |
16124 | && (b.min_pred_cycles_per_iter () | |
16125 | > b.min_nonpred_cycles_per_iter ())) | |
16126 | { | |
16127 | if (dump_enabled_p ()) | |
16128 | dump_printf_loc (MSG_NOTE, vect_location, | |
16129 | "Preferring Advanced SIMD loop since" | |
16130 | " SVE loop is predicate-limited\n"); | |
16131 | return true; | |
16132 | } | |
16133 | return false; | |
16134 | }; | |
16135 | if (better_pred_limit_p (this->m_ops[i], other->m_ops[i])) | |
16136 | return true; | |
16137 | if (better_pred_limit_p (other->m_ops[i], this->m_ops[i])) | |
16138 | return false; | |
16139 | } | |
16140 | ||
16141 | return vector_costs::better_main_loop_than_p (other); | |
16142 | } | |
16143 | ||
0cfff2a1 | 16144 | static void initialize_aarch64_code_model (struct gcc_options *); |
43e9d192 | 16145 | |
0cfff2a1 KT |
16146 | /* Parse the TO_PARSE string and put the architecture struct that it |
16147 | selects into RES and the architectural features into ISA_FLAGS. | |
16148 | Return an aarch64_parse_opt_result describing the parse result. | |
c7887347 ML |
16149 | If there is an error parsing, RES and ISA_FLAGS are left unchanged. |
16150 | When the TO_PARSE string contains an invalid extension, | |
16151 | a copy of the string is created and stored to INVALID_EXTENSION. */ | |
43e9d192 | 16152 | |
0cfff2a1 KT |
16153 | static enum aarch64_parse_opt_result |
16154 | aarch64_parse_arch (const char *to_parse, const struct processor **res, | |
28108a53 | 16155 | uint64_t *isa_flags, std::string *invalid_extension) |
43e9d192 | 16156 | { |
ff150bc4 | 16157 | const char *ext; |
43e9d192 | 16158 | const struct processor *arch; |
43e9d192 IB |
16159 | size_t len; |
16160 | ||
ff150bc4 | 16161 | ext = strchr (to_parse, '+'); |
43e9d192 IB |
16162 | |
16163 | if (ext != NULL) | |
ff150bc4 | 16164 | len = ext - to_parse; |
43e9d192 | 16165 | else |
ff150bc4 | 16166 | len = strlen (to_parse); |
43e9d192 IB |
16167 | |
16168 | if (len == 0) | |
0cfff2a1 KT |
16169 | return AARCH64_PARSE_MISSING_ARG; |
16170 | ||
43e9d192 | 16171 | |
0cfff2a1 | 16172 | /* Loop through the list of supported ARCHes to find a match. */ |
43e9d192 IB |
16173 | for (arch = all_architectures; arch->name != NULL; arch++) |
16174 | { | |
ff150bc4 ML |
16175 | if (strlen (arch->name) == len |
16176 | && strncmp (arch->name, to_parse, len) == 0) | |
43e9d192 | 16177 | { |
28108a53 | 16178 | uint64_t isa_temp = arch->flags; |
43e9d192 IB |
16179 | |
16180 | if (ext != NULL) | |
16181 | { | |
0cfff2a1 KT |
16182 | /* TO_PARSE string contains at least one extension. */ |
16183 | enum aarch64_parse_opt_result ext_res | |
c7887347 | 16184 | = aarch64_parse_extension (ext, &isa_temp, invalid_extension); |
43e9d192 | 16185 | |
0cfff2a1 KT |
16186 | if (ext_res != AARCH64_PARSE_OK) |
16187 | return ext_res; | |
ffee7aa9 | 16188 | } |
0cfff2a1 KT |
16189 | /* Extension parsing was successful. Confirm the result |
16190 | arch and ISA flags. */ | |
16191 | *res = arch; | |
16192 | *isa_flags = isa_temp; | |
16193 | return AARCH64_PARSE_OK; | |
43e9d192 IB |
16194 | } |
16195 | } | |
16196 | ||
16197 | /* ARCH name not found in list. */ | |
0cfff2a1 | 16198 | return AARCH64_PARSE_INVALID_ARG; |
43e9d192 IB |
16199 | } |
16200 | ||
0cfff2a1 KT |
16201 | /* Parse the TO_PARSE string and put the result tuning in RES and the |
16202 | architecture flags in ISA_FLAGS. Return an aarch64_parse_opt_result | |
16203 | describing the parse result. If there is an error parsing, RES and | |
c7887347 ML |
16204 | ISA_FLAGS are left unchanged. |
16205 | When the TO_PARSE string contains an invalid extension, | |
16206 | a copy of the string is created and stored to INVALID_EXTENSION. */ | |
43e9d192 | 16207 | |
0cfff2a1 KT |
16208 | static enum aarch64_parse_opt_result |
16209 | aarch64_parse_cpu (const char *to_parse, const struct processor **res, | |
28108a53 | 16210 | uint64_t *isa_flags, std::string *invalid_extension) |
43e9d192 | 16211 | { |
ff150bc4 | 16212 | const char *ext; |
43e9d192 | 16213 | const struct processor *cpu; |
43e9d192 IB |
16214 | size_t len; |
16215 | ||
ff150bc4 | 16216 | ext = strchr (to_parse, '+'); |
43e9d192 IB |
16217 | |
16218 | if (ext != NULL) | |
ff150bc4 | 16219 | len = ext - to_parse; |
43e9d192 | 16220 | else |
ff150bc4 | 16221 | len = strlen (to_parse); |
43e9d192 IB |
16222 | |
16223 | if (len == 0) | |
0cfff2a1 KT |
16224 | return AARCH64_PARSE_MISSING_ARG; |
16225 | ||
43e9d192 IB |
16226 | |
16227 | /* Loop through the list of supported CPUs to find a match. */ | |
16228 | for (cpu = all_cores; cpu->name != NULL; cpu++) | |
16229 | { | |
ff150bc4 | 16230 | if (strlen (cpu->name) == len && strncmp (cpu->name, to_parse, len) == 0) |
43e9d192 | 16231 | { |
28108a53 | 16232 | uint64_t isa_temp = cpu->flags; |
0cfff2a1 | 16233 | |
43e9d192 IB |
16234 | |
16235 | if (ext != NULL) | |
16236 | { | |
0cfff2a1 KT |
16237 | /* TO_PARSE string contains at least one extension. */ |
16238 | enum aarch64_parse_opt_result ext_res | |
c7887347 | 16239 | = aarch64_parse_extension (ext, &isa_temp, invalid_extension); |
43e9d192 | 16240 | |
0cfff2a1 KT |
16241 | if (ext_res != AARCH64_PARSE_OK) |
16242 | return ext_res; | |
16243 | } | |
16244 | /* Extension parsing was successfull. Confirm the result | |
16245 | cpu and ISA flags. */ | |
16246 | *res = cpu; | |
16247 | *isa_flags = isa_temp; | |
16248 | return AARCH64_PARSE_OK; | |
43e9d192 IB |
16249 | } |
16250 | } | |
16251 | ||
16252 | /* CPU name not found in list. */ | |
0cfff2a1 | 16253 | return AARCH64_PARSE_INVALID_ARG; |
43e9d192 IB |
16254 | } |
16255 | ||
0cfff2a1 KT |
16256 | /* Parse the TO_PARSE string and put the cpu it selects into RES. |
16257 | Return an aarch64_parse_opt_result describing the parse result. | |
16258 | If the parsing fails the RES does not change. */ | |
43e9d192 | 16259 | |
0cfff2a1 KT |
16260 | static enum aarch64_parse_opt_result |
16261 | aarch64_parse_tune (const char *to_parse, const struct processor **res) | |
43e9d192 IB |
16262 | { |
16263 | const struct processor *cpu; | |
43e9d192 IB |
16264 | |
16265 | /* Loop through the list of supported CPUs to find a match. */ | |
16266 | for (cpu = all_cores; cpu->name != NULL; cpu++) | |
16267 | { | |
ff150bc4 | 16268 | if (strcmp (cpu->name, to_parse) == 0) |
43e9d192 | 16269 | { |
0cfff2a1 KT |
16270 | *res = cpu; |
16271 | return AARCH64_PARSE_OK; | |
43e9d192 IB |
16272 | } |
16273 | } | |
16274 | ||
16275 | /* CPU name not found in list. */ | |
0cfff2a1 | 16276 | return AARCH64_PARSE_INVALID_ARG; |
43e9d192 IB |
16277 | } |
16278 | ||
8dec06f2 JG |
16279 | /* Parse TOKEN, which has length LENGTH to see if it is an option |
16280 | described in FLAG. If it is, return the index bit for that fusion type. | |
16281 | If not, error (printing OPTION_NAME) and return zero. */ | |
16282 | ||
16283 | static unsigned int | |
16284 | aarch64_parse_one_option_token (const char *token, | |
16285 | size_t length, | |
16286 | const struct aarch64_flag_desc *flag, | |
16287 | const char *option_name) | |
16288 | { | |
16289 | for (; flag->name != NULL; flag++) | |
16290 | { | |
16291 | if (length == strlen (flag->name) | |
16292 | && !strncmp (flag->name, token, length)) | |
16293 | return flag->flag; | |
16294 | } | |
16295 | ||
a3f9f006 | 16296 | error ("unknown flag passed in %<-moverride=%s%> (%s)", option_name, token); |
8dec06f2 JG |
16297 | return 0; |
16298 | } | |
16299 | ||
16300 | /* Parse OPTION which is a comma-separated list of flags to enable. | |
16301 | FLAGS gives the list of flags we understand, INITIAL_STATE gives any | |
16302 | default state we inherit from the CPU tuning structures. OPTION_NAME | |
16303 | gives the top-level option we are parsing in the -moverride string, | |
16304 | for use in error messages. */ | |
16305 | ||
16306 | static unsigned int | |
16307 | aarch64_parse_boolean_options (const char *option, | |
16308 | const struct aarch64_flag_desc *flags, | |
16309 | unsigned int initial_state, | |
16310 | const char *option_name) | |
16311 | { | |
16312 | const char separator = '.'; | |
16313 | const char* specs = option; | |
16314 | const char* ntoken = option; | |
16315 | unsigned int found_flags = initial_state; | |
16316 | ||
16317 | while ((ntoken = strchr (specs, separator))) | |
16318 | { | |
16319 | size_t token_length = ntoken - specs; | |
16320 | unsigned token_ops = aarch64_parse_one_option_token (specs, | |
16321 | token_length, | |
16322 | flags, | |
16323 | option_name); | |
16324 | /* If we find "none" (or, for simplicity's sake, an error) anywhere | |
16325 | in the token stream, reset the supported operations. So: | |
16326 | ||
16327 | adrp+add.cmp+branch.none.adrp+add | |
16328 | ||
16329 | would have the result of turning on only adrp+add fusion. */ | |
16330 | if (!token_ops) | |
16331 | found_flags = 0; | |
16332 | ||
16333 | found_flags |= token_ops; | |
16334 | specs = ++ntoken; | |
16335 | } | |
16336 | ||
16337 | /* We ended with a comma, print something. */ | |
16338 | if (!(*specs)) | |
16339 | { | |
16340 | error ("%s string ill-formed\n", option_name); | |
16341 | return 0; | |
16342 | } | |
16343 | ||
16344 | /* We still have one more token to parse. */ | |
16345 | size_t token_length = strlen (specs); | |
16346 | unsigned token_ops = aarch64_parse_one_option_token (specs, | |
16347 | token_length, | |
16348 | flags, | |
16349 | option_name); | |
16350 | if (!token_ops) | |
16351 | found_flags = 0; | |
16352 | ||
16353 | found_flags |= token_ops; | |
16354 | return found_flags; | |
16355 | } | |
16356 | ||
16357 | /* Support for overriding instruction fusion. */ | |
16358 | ||
16359 | static void | |
16360 | aarch64_parse_fuse_string (const char *fuse_string, | |
16361 | struct tune_params *tune) | |
16362 | { | |
16363 | tune->fusible_ops = aarch64_parse_boolean_options (fuse_string, | |
16364 | aarch64_fusible_pairs, | |
16365 | tune->fusible_ops, | |
16366 | "fuse="); | |
16367 | } | |
16368 | ||
16369 | /* Support for overriding other tuning flags. */ | |
16370 | ||
16371 | static void | |
16372 | aarch64_parse_tune_string (const char *tune_string, | |
16373 | struct tune_params *tune) | |
16374 | { | |
16375 | tune->extra_tuning_flags | |
16376 | = aarch64_parse_boolean_options (tune_string, | |
16377 | aarch64_tuning_flags, | |
16378 | tune->extra_tuning_flags, | |
16379 | "tune="); | |
16380 | } | |
16381 | ||
886f092f KT |
16382 | /* Parse the sve_width tuning moverride string in TUNE_STRING. |
16383 | Accept the valid SVE vector widths allowed by | |
16384 | aarch64_sve_vector_bits_enum and use it to override sve_width | |
16385 | in TUNE. */ | |
16386 | ||
16387 | static void | |
16388 | aarch64_parse_sve_width_string (const char *tune_string, | |
16389 | struct tune_params *tune) | |
16390 | { | |
16391 | int width = -1; | |
16392 | ||
16393 | int n = sscanf (tune_string, "%d", &width); | |
16394 | if (n == EOF) | |
16395 | { | |
16396 | error ("invalid format for sve_width"); | |
16397 | return; | |
16398 | } | |
16399 | switch (width) | |
16400 | { | |
16401 | case SVE_128: | |
16402 | case SVE_256: | |
16403 | case SVE_512: | |
16404 | case SVE_1024: | |
16405 | case SVE_2048: | |
16406 | break; | |
16407 | default: | |
16408 | error ("invalid sve_width value: %d", width); | |
16409 | } | |
16410 | tune->sve_width = (enum aarch64_sve_vector_bits_enum) width; | |
16411 | } | |
16412 | ||
8dec06f2 JG |
16413 | /* Parse TOKEN, which has length LENGTH to see if it is a tuning option |
16414 | we understand. If it is, extract the option string and handoff to | |
16415 | the appropriate function. */ | |
16416 | ||
16417 | void | |
16418 | aarch64_parse_one_override_token (const char* token, | |
16419 | size_t length, | |
16420 | struct tune_params *tune) | |
16421 | { | |
16422 | const struct aarch64_tuning_override_function *fn | |
16423 | = aarch64_tuning_override_functions; | |
16424 | ||
16425 | const char *option_part = strchr (token, '='); | |
16426 | if (!option_part) | |
16427 | { | |
16428 | error ("tuning string missing in option (%s)", token); | |
16429 | return; | |
16430 | } | |
16431 | ||
16432 | /* Get the length of the option name. */ | |
16433 | length = option_part - token; | |
16434 | /* Skip the '=' to get to the option string. */ | |
16435 | option_part++; | |
16436 | ||
16437 | for (; fn->name != NULL; fn++) | |
16438 | { | |
16439 | if (!strncmp (fn->name, token, length)) | |
16440 | { | |
16441 | fn->parse_override (option_part, tune); | |
16442 | return; | |
16443 | } | |
16444 | } | |
16445 | ||
16446 | error ("unknown tuning option (%s)",token); | |
16447 | return; | |
16448 | } | |
16449 | ||
5eee3c34 JW |
16450 | /* A checking mechanism for the implementation of the tls size. */ |
16451 | ||
16452 | static void | |
16453 | initialize_aarch64_tls_size (struct gcc_options *opts) | |
16454 | { | |
16455 | if (aarch64_tls_size == 0) | |
16456 | aarch64_tls_size = 24; | |
16457 | ||
16458 | switch (opts->x_aarch64_cmodel_var) | |
16459 | { | |
16460 | case AARCH64_CMODEL_TINY: | |
16461 | /* Both the default and maximum TLS size allowed under tiny is 1M which | |
16462 | needs two instructions to address, so we clamp the size to 24. */ | |
16463 | if (aarch64_tls_size > 24) | |
16464 | aarch64_tls_size = 24; | |
16465 | break; | |
16466 | case AARCH64_CMODEL_SMALL: | |
16467 | /* The maximum TLS size allowed under small is 4G. */ | |
16468 | if (aarch64_tls_size > 32) | |
16469 | aarch64_tls_size = 32; | |
16470 | break; | |
16471 | case AARCH64_CMODEL_LARGE: | |
16472 | /* The maximum TLS size allowed under large is 16E. | |
16473 | FIXME: 16E should be 64bit, we only support 48bit offset now. */ | |
16474 | if (aarch64_tls_size > 48) | |
16475 | aarch64_tls_size = 48; | |
16476 | break; | |
16477 | default: | |
16478 | gcc_unreachable (); | |
16479 | } | |
16480 | ||
16481 | return; | |
16482 | } | |
16483 | ||
8dec06f2 JG |
16484 | /* Parse STRING looking for options in the format: |
16485 | string :: option:string | |
16486 | option :: name=substring | |
16487 | name :: {a-z} | |
16488 | substring :: defined by option. */ | |
16489 | ||
16490 | static void | |
16491 | aarch64_parse_override_string (const char* input_string, | |
16492 | struct tune_params* tune) | |
16493 | { | |
16494 | const char separator = ':'; | |
16495 | size_t string_length = strlen (input_string) + 1; | |
16496 | char *string_root = (char *) xmalloc (sizeof (*string_root) * string_length); | |
16497 | char *string = string_root; | |
16498 | strncpy (string, input_string, string_length); | |
16499 | string[string_length - 1] = '\0'; | |
16500 | ||
16501 | char* ntoken = string; | |
16502 | ||
16503 | while ((ntoken = strchr (string, separator))) | |
16504 | { | |
16505 | size_t token_length = ntoken - string; | |
16506 | /* Make this substring look like a string. */ | |
16507 | *ntoken = '\0'; | |
16508 | aarch64_parse_one_override_token (string, token_length, tune); | |
16509 | string = ++ntoken; | |
16510 | } | |
16511 | ||
16512 | /* One last option to parse. */ | |
16513 | aarch64_parse_one_override_token (string, strlen (string), tune); | |
16514 | free (string_root); | |
16515 | } | |
43e9d192 | 16516 | |
8f0c9d53 KT |
16517 | /* Adjust CURRENT_TUNE (a generic tuning struct) with settings that |
16518 | are best for a generic target with the currently-enabled architecture | |
16519 | extensions. */ | |
16520 | static void | |
16521 | aarch64_adjust_generic_arch_tuning (struct tune_params ¤t_tune) | |
16522 | { | |
16523 | /* Neoverse V1 is the only core that is known to benefit from | |
16524 | AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS. There is therefore no | |
16525 | point enabling it for SVE2 and above. */ | |
16526 | if (TARGET_SVE2) | |
16527 | current_tune.extra_tuning_flags | |
16528 | &= ~AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS; | |
16529 | } | |
43e9d192 IB |
16530 | |
16531 | static void | |
0cfff2a1 | 16532 | aarch64_override_options_after_change_1 (struct gcc_options *opts) |
43e9d192 | 16533 | { |
efac62a3 ST |
16534 | if (accepted_branch_protection_string) |
16535 | { | |
16536 | opts->x_aarch64_branch_protection_string | |
16537 | = xstrdup (accepted_branch_protection_string); | |
16538 | } | |
16539 | ||
acea40ac WD |
16540 | /* PR 70044: We have to be careful about being called multiple times for the |
16541 | same function. This means all changes should be repeatable. */ | |
16542 | ||
d6cb6d6a WD |
16543 | /* Set aarch64_use_frame_pointer based on -fno-omit-frame-pointer. |
16544 | Disable the frame pointer flag so the mid-end will not use a frame | |
16545 | pointer in leaf functions in order to support -fomit-leaf-frame-pointer. | |
16546 | Set x_flag_omit_frame_pointer to the special value 2 to differentiate | |
16547 | between -fomit-frame-pointer (1) and -fno-omit-frame-pointer (2). */ | |
16548 | aarch64_use_frame_pointer = opts->x_flag_omit_frame_pointer != 1; | |
acea40ac | 16549 | if (opts->x_flag_omit_frame_pointer == 0) |
a3dc8760 | 16550 | opts->x_flag_omit_frame_pointer = 2; |
43e9d192 | 16551 | |
1be34295 | 16552 | /* If not optimizing for size, set the default |
0cfff2a1 KT |
16553 | alignment to what the target wants. */ |
16554 | if (!opts->x_optimize_size) | |
43e9d192 | 16555 | { |
c518c102 ML |
16556 | if (opts->x_flag_align_loops && !opts->x_str_align_loops) |
16557 | opts->x_str_align_loops = aarch64_tune_params.loop_align; | |
16558 | if (opts->x_flag_align_jumps && !opts->x_str_align_jumps) | |
16559 | opts->x_str_align_jumps = aarch64_tune_params.jump_align; | |
16560 | if (opts->x_flag_align_functions && !opts->x_str_align_functions) | |
16561 | opts->x_str_align_functions = aarch64_tune_params.function_align; | |
43e9d192 | 16562 | } |
b4f50fd4 | 16563 | |
9ee6540a WD |
16564 | /* We default to no pc-relative literal loads. */ |
16565 | ||
16566 | aarch64_pcrelative_literal_loads = false; | |
16567 | ||
16568 | /* If -mpc-relative-literal-loads is set on the command line, this | |
b4f50fd4 | 16569 | implies that the user asked for PC relative literal loads. */ |
9ee6540a WD |
16570 | if (opts->x_pcrelative_literal_loads == 1) |
16571 | aarch64_pcrelative_literal_loads = true; | |
b4f50fd4 | 16572 | |
9ee6540a WD |
16573 | /* In the tiny memory model it makes no sense to disallow PC relative |
16574 | literal pool loads. */ | |
16575 | if (aarch64_cmodel == AARCH64_CMODEL_TINY | |
16576 | || aarch64_cmodel == AARCH64_CMODEL_TINY_PIC) | |
16577 | aarch64_pcrelative_literal_loads = true; | |
98daafa0 EM |
16578 | |
16579 | /* When enabling the lower precision Newton series for the square root, also | |
16580 | enable it for the reciprocal square root, since the latter is an | |
16581 | intermediary step for the former. */ | |
16582 | if (flag_mlow_precision_sqrt) | |
16583 | flag_mrecip_low_precision_sqrt = true; | |
0cfff2a1 | 16584 | } |
43e9d192 | 16585 | |
0cfff2a1 KT |
16586 | /* 'Unpack' up the internal tuning structs and update the options |
16587 | in OPTS. The caller must have set up selected_tune and selected_arch | |
16588 | as all the other target-specific codegen decisions are | |
16589 | derived from them. */ | |
16590 | ||
e4ea20c8 | 16591 | void |
0cfff2a1 KT |
16592 | aarch64_override_options_internal (struct gcc_options *opts) |
16593 | { | |
16594 | aarch64_tune_flags = selected_tune->flags; | |
16595 | aarch64_tune = selected_tune->sched_core; | |
16596 | /* Make a copy of the tuning parameters attached to the core, which | |
16597 | we may later overwrite. */ | |
16598 | aarch64_tune_params = *(selected_tune->tune); | |
16599 | aarch64_architecture_version = selected_arch->architecture_version; | |
8f0c9d53 KT |
16600 | if (selected_tune->tune == &generic_tunings) |
16601 | aarch64_adjust_generic_arch_tuning (aarch64_tune_params); | |
0cfff2a1 KT |
16602 | |
16603 | if (opts->x_aarch64_override_tune_string) | |
16604 | aarch64_parse_override_string (opts->x_aarch64_override_tune_string, | |
16605 | &aarch64_tune_params); | |
16606 | ||
16607 | /* This target defaults to strict volatile bitfields. */ | |
16608 | if (opts->x_flag_strict_volatile_bitfields < 0 && abi_version_at_least (2)) | |
16609 | opts->x_flag_strict_volatile_bitfields = 1; | |
16610 | ||
cd0b2d36 RR |
16611 | if (aarch64_stack_protector_guard == SSP_GLOBAL |
16612 | && opts->x_aarch64_stack_protector_guard_offset_str) | |
16613 | { | |
41804907 | 16614 | error ("incompatible options %<-mstack-protector-guard=global%> and " |
63d42e89 | 16615 | "%<-mstack-protector-guard-offset=%s%>", |
cd0b2d36 RR |
16616 | aarch64_stack_protector_guard_offset_str); |
16617 | } | |
16618 | ||
16619 | if (aarch64_stack_protector_guard == SSP_SYSREG | |
16620 | && !(opts->x_aarch64_stack_protector_guard_offset_str | |
16621 | && opts->x_aarch64_stack_protector_guard_reg_str)) | |
16622 | { | |
a3f9f006 ML |
16623 | error ("both %<-mstack-protector-guard-offset%> and " |
16624 | "%<-mstack-protector-guard-reg%> must be used " | |
16625 | "with %<-mstack-protector-guard=sysreg%>"); | |
cd0b2d36 RR |
16626 | } |
16627 | ||
16628 | if (opts->x_aarch64_stack_protector_guard_reg_str) | |
16629 | { | |
16630 | if (strlen (opts->x_aarch64_stack_protector_guard_reg_str) > 100) | |
16631 | error ("specify a system register with a small string length."); | |
16632 | } | |
16633 | ||
16634 | if (opts->x_aarch64_stack_protector_guard_offset_str) | |
16635 | { | |
16636 | char *end; | |
16637 | const char *str = aarch64_stack_protector_guard_offset_str; | |
16638 | errno = 0; | |
16639 | long offs = strtol (aarch64_stack_protector_guard_offset_str, &end, 0); | |
16640 | if (!*str || *end || errno) | |
16641 | error ("%qs is not a valid offset in %qs", str, | |
63d42e89 | 16642 | "-mstack-protector-guard-offset="); |
cd0b2d36 RR |
16643 | aarch64_stack_protector_guard_offset = offs; |
16644 | } | |
16645 | ||
0cfff2a1 | 16646 | initialize_aarch64_code_model (opts); |
5eee3c34 | 16647 | initialize_aarch64_tls_size (opts); |
63892fa2 | 16648 | |
2d6bc7fa KT |
16649 | int queue_depth = 0; |
16650 | switch (aarch64_tune_params.autoprefetcher_model) | |
16651 | { | |
16652 | case tune_params::AUTOPREFETCHER_OFF: | |
16653 | queue_depth = -1; | |
16654 | break; | |
16655 | case tune_params::AUTOPREFETCHER_WEAK: | |
16656 | queue_depth = 0; | |
16657 | break; | |
16658 | case tune_params::AUTOPREFETCHER_STRONG: | |
16659 | queue_depth = max_insn_queue_index + 1; | |
16660 | break; | |
16661 | default: | |
16662 | gcc_unreachable (); | |
16663 | } | |
16664 | ||
16665 | /* We don't mind passing in global_options_set here as we don't use | |
16666 | the *options_set structs anyway. */ | |
028d4092 ML |
16667 | SET_OPTION_IF_UNSET (opts, &global_options_set, |
16668 | param_sched_autopref_queue_depth, queue_depth); | |
2d6bc7fa | 16669 | |
5f29f3d5 KT |
16670 | /* If using Advanced SIMD only for autovectorization disable SVE vector costs |
16671 | comparison. */ | |
16672 | if (aarch64_autovec_preference == 1) | |
16673 | SET_OPTION_IF_UNSET (opts, &global_options_set, | |
16674 | aarch64_sve_compare_costs, 0); | |
16675 | ||
9d2c6e2e MK |
16676 | /* Set up parameters to be used in prefetching algorithm. Do not |
16677 | override the defaults unless we are tuning for a core we have | |
16678 | researched values for. */ | |
16679 | if (aarch64_tune_params.prefetch->num_slots > 0) | |
028d4092 ML |
16680 | SET_OPTION_IF_UNSET (opts, &global_options_set, |
16681 | param_simultaneous_prefetches, | |
16682 | aarch64_tune_params.prefetch->num_slots); | |
9d2c6e2e | 16683 | if (aarch64_tune_params.prefetch->l1_cache_size >= 0) |
028d4092 ML |
16684 | SET_OPTION_IF_UNSET (opts, &global_options_set, |
16685 | param_l1_cache_size, | |
16686 | aarch64_tune_params.prefetch->l1_cache_size); | |
9d2c6e2e | 16687 | if (aarch64_tune_params.prefetch->l1_cache_line_size >= 0) |
028d4092 ML |
16688 | SET_OPTION_IF_UNSET (opts, &global_options_set, |
16689 | param_l1_cache_line_size, | |
16690 | aarch64_tune_params.prefetch->l1_cache_line_size); | |
76b75018 JM |
16691 | |
16692 | if (aarch64_tune_params.prefetch->l1_cache_line_size >= 0) | |
16693 | { | |
16694 | SET_OPTION_IF_UNSET (opts, &global_options_set, | |
16695 | param_destruct_interfere_size, | |
16696 | aarch64_tune_params.prefetch->l1_cache_line_size); | |
16697 | SET_OPTION_IF_UNSET (opts, &global_options_set, | |
16698 | param_construct_interfere_size, | |
16699 | aarch64_tune_params.prefetch->l1_cache_line_size); | |
16700 | } | |
16701 | else | |
16702 | { | |
16703 | /* For a generic AArch64 target, cover the current range of cache line | |
16704 | sizes. */ | |
16705 | SET_OPTION_IF_UNSET (opts, &global_options_set, | |
16706 | param_destruct_interfere_size, | |
16707 | 256); | |
16708 | SET_OPTION_IF_UNSET (opts, &global_options_set, | |
16709 | param_construct_interfere_size, | |
16710 | 64); | |
16711 | } | |
16712 | ||
9d2c6e2e | 16713 | if (aarch64_tune_params.prefetch->l2_cache_size >= 0) |
028d4092 ML |
16714 | SET_OPTION_IF_UNSET (opts, &global_options_set, |
16715 | param_l2_cache_size, | |
16716 | aarch64_tune_params.prefetch->l2_cache_size); | |
d2ff35c0 | 16717 | if (!aarch64_tune_params.prefetch->prefetch_dynamic_strides) |
028d4092 ML |
16718 | SET_OPTION_IF_UNSET (opts, &global_options_set, |
16719 | param_prefetch_dynamic_strides, 0); | |
59100dfc | 16720 | if (aarch64_tune_params.prefetch->minimum_stride >= 0) |
028d4092 ML |
16721 | SET_OPTION_IF_UNSET (opts, &global_options_set, |
16722 | param_prefetch_minimum_stride, | |
16723 | aarch64_tune_params.prefetch->minimum_stride); | |
50487d79 | 16724 | |
13494fcb | 16725 | /* Use the alternative scheduling-pressure algorithm by default. */ |
028d4092 ML |
16726 | SET_OPTION_IF_UNSET (opts, &global_options_set, |
16727 | param_sched_pressure_algorithm, | |
16728 | SCHED_PRESSURE_MODEL); | |
13494fcb | 16729 | |
fbe9af50 | 16730 | /* Validate the guard size. */ |
028d4092 | 16731 | int guard_size = param_stack_clash_protection_guard_size; |
fbe9af50 | 16732 | |
8100e93b ML |
16733 | if (guard_size != 12 && guard_size != 16) |
16734 | error ("only values 12 (4 KB) and 16 (64 KB) are supported for guard " | |
16735 | "size. Given value %d (%llu KB) is out of range", | |
16736 | guard_size, (1ULL << guard_size) / 1024ULL); | |
16737 | ||
fbe9af50 TC |
16738 | /* Enforce that interval is the same size as size so the mid-end does the |
16739 | right thing. */ | |
028d4092 ML |
16740 | SET_OPTION_IF_UNSET (opts, &global_options_set, |
16741 | param_stack_clash_protection_probe_interval, | |
16742 | guard_size); | |
fbe9af50 TC |
16743 | |
16744 | /* The maybe_set calls won't update the value if the user has explicitly set | |
16745 | one. Which means we need to validate that probing interval and guard size | |
16746 | are equal. */ | |
16747 | int probe_interval | |
028d4092 | 16748 | = param_stack_clash_protection_probe_interval; |
fbe9af50 | 16749 | if (guard_size != probe_interval) |
904f3daa ML |
16750 | error ("stack clash guard size %<%d%> must be equal to probing interval " |
16751 | "%<%d%>", guard_size, probe_interval); | |
fbe9af50 | 16752 | |
16b2cafd MK |
16753 | /* Enable sw prefetching at specified optimization level for |
16754 | CPUS that have prefetch. Lower optimization level threshold by 1 | |
16755 | when profiling is enabled. */ | |
16756 | if (opts->x_flag_prefetch_loop_arrays < 0 | |
16757 | && !opts->x_optimize_size | |
16758 | && aarch64_tune_params.prefetch->default_opt_level >= 0 | |
16759 | && opts->x_optimize >= aarch64_tune_params.prefetch->default_opt_level) | |
16760 | opts->x_flag_prefetch_loop_arrays = 1; | |
16761 | ||
266c2b54 ML |
16762 | if (opts->x_aarch64_arch_string == NULL) |
16763 | opts->x_aarch64_arch_string = selected_arch->name; | |
16764 | if (opts->x_aarch64_cpu_string == NULL) | |
16765 | opts->x_aarch64_cpu_string = selected_cpu->name; | |
16766 | if (opts->x_aarch64_tune_string == NULL) | |
16767 | opts->x_aarch64_tune_string = selected_tune->name; | |
16768 | ||
0cfff2a1 KT |
16769 | aarch64_override_options_after_change_1 (opts); |
16770 | } | |
43e9d192 | 16771 | |
01f44038 KT |
16772 | /* Print a hint with a suggestion for a core or architecture name that |
16773 | most closely resembles what the user passed in STR. ARCH is true if | |
16774 | the user is asking for an architecture name. ARCH is false if the user | |
16775 | is asking for a core name. */ | |
16776 | ||
16777 | static void | |
16778 | aarch64_print_hint_for_core_or_arch (const char *str, bool arch) | |
16779 | { | |
16780 | auto_vec<const char *> candidates; | |
16781 | const struct processor *entry = arch ? all_architectures : all_cores; | |
16782 | for (; entry->name != NULL; entry++) | |
16783 | candidates.safe_push (entry->name); | |
a08b5429 ML |
16784 | |
16785 | #ifdef HAVE_LOCAL_CPU_DETECT | |
16786 | /* Add also "native" as possible value. */ | |
16787 | if (arch) | |
16788 | candidates.safe_push ("native"); | |
16789 | #endif | |
16790 | ||
01f44038 KT |
16791 | char *s; |
16792 | const char *hint = candidates_list_and_hint (str, s, candidates); | |
16793 | if (hint) | |
16794 | inform (input_location, "valid arguments are: %s;" | |
16795 | " did you mean %qs?", s, hint); | |
6285e915 ML |
16796 | else |
16797 | inform (input_location, "valid arguments are: %s", s); | |
16798 | ||
01f44038 KT |
16799 | XDELETEVEC (s); |
16800 | } | |
16801 | ||
16802 | /* Print a hint with a suggestion for a core name that most closely resembles | |
16803 | what the user passed in STR. */ | |
16804 | ||
16805 | inline static void | |
16806 | aarch64_print_hint_for_core (const char *str) | |
16807 | { | |
16808 | aarch64_print_hint_for_core_or_arch (str, false); | |
16809 | } | |
16810 | ||
16811 | /* Print a hint with a suggestion for an architecture name that most closely | |
16812 | resembles what the user passed in STR. */ | |
16813 | ||
16814 | inline static void | |
16815 | aarch64_print_hint_for_arch (const char *str) | |
16816 | { | |
16817 | aarch64_print_hint_for_core_or_arch (str, true); | |
16818 | } | |
16819 | ||
c7887347 ML |
16820 | |
16821 | /* Print a hint with a suggestion for an extension name | |
16822 | that most closely resembles what the user passed in STR. */ | |
16823 | ||
16824 | void | |
16825 | aarch64_print_hint_for_extensions (const std::string &str) | |
16826 | { | |
16827 | auto_vec<const char *> candidates; | |
16828 | aarch64_get_all_extension_candidates (&candidates); | |
16829 | char *s; | |
16830 | const char *hint = candidates_list_and_hint (str.c_str (), s, candidates); | |
16831 | if (hint) | |
16832 | inform (input_location, "valid arguments are: %s;" | |
16833 | " did you mean %qs?", s, hint); | |
16834 | else | |
16835 | inform (input_location, "valid arguments are: %s;", s); | |
16836 | ||
16837 | XDELETEVEC (s); | |
16838 | } | |
16839 | ||
0cfff2a1 KT |
16840 | /* Validate a command-line -mcpu option. Parse the cpu and extensions (if any) |
16841 | specified in STR and throw errors if appropriate. Put the results if | |
361fb3ee KT |
16842 | they are valid in RES and ISA_FLAGS. Return whether the option is |
16843 | valid. */ | |
43e9d192 | 16844 | |
361fb3ee | 16845 | static bool |
0cfff2a1 | 16846 | aarch64_validate_mcpu (const char *str, const struct processor **res, |
28108a53 | 16847 | uint64_t *isa_flags) |
0cfff2a1 | 16848 | { |
c7887347 | 16849 | std::string invalid_extension; |
0cfff2a1 | 16850 | enum aarch64_parse_opt_result parse_res |
c7887347 | 16851 | = aarch64_parse_cpu (str, res, isa_flags, &invalid_extension); |
0cfff2a1 KT |
16852 | |
16853 | if (parse_res == AARCH64_PARSE_OK) | |
361fb3ee | 16854 | return true; |
0cfff2a1 KT |
16855 | |
16856 | switch (parse_res) | |
16857 | { | |
16858 | case AARCH64_PARSE_MISSING_ARG: | |
fb241da2 | 16859 | error ("missing cpu name in %<-mcpu=%s%>", str); |
0cfff2a1 KT |
16860 | break; |
16861 | case AARCH64_PARSE_INVALID_ARG: | |
a3f9f006 | 16862 | error ("unknown value %qs for %<-mcpu%>", str); |
01f44038 | 16863 | aarch64_print_hint_for_core (str); |
0cfff2a1 KT |
16864 | break; |
16865 | case AARCH64_PARSE_INVALID_FEATURE: | |
c7887347 ML |
16866 | error ("invalid feature modifier %qs in %<-mcpu=%s%>", |
16867 | invalid_extension.c_str (), str); | |
16868 | aarch64_print_hint_for_extensions (invalid_extension); | |
0cfff2a1 KT |
16869 | break; |
16870 | default: | |
16871 | gcc_unreachable (); | |
16872 | } | |
361fb3ee KT |
16873 | |
16874 | return false; | |
0cfff2a1 KT |
16875 | } |
16876 | ||
a9ba2a9b MM |
16877 | /* Straight line speculation indicators. */ |
16878 | enum aarch64_sls_hardening_type | |
16879 | { | |
16880 | SLS_NONE = 0, | |
16881 | SLS_RETBR = 1, | |
16882 | SLS_BLR = 2, | |
16883 | SLS_ALL = 3, | |
16884 | }; | |
16885 | static enum aarch64_sls_hardening_type aarch64_sls_hardening; | |
16886 | ||
16887 | /* Return whether we should mitigatate Straight Line Speculation for the RET | |
16888 | and BR instructions. */ | |
16889 | bool | |
16890 | aarch64_harden_sls_retbr_p (void) | |
16891 | { | |
16892 | return aarch64_sls_hardening & SLS_RETBR; | |
16893 | } | |
16894 | ||
16895 | /* Return whether we should mitigatate Straight Line Speculation for the BLR | |
16896 | instruction. */ | |
16897 | bool | |
16898 | aarch64_harden_sls_blr_p (void) | |
16899 | { | |
16900 | return aarch64_sls_hardening & SLS_BLR; | |
16901 | } | |
16902 | ||
16903 | /* As of yet we only allow setting these options globally, in the future we may | |
16904 | allow setting them per function. */ | |
16905 | static void | |
16906 | aarch64_validate_sls_mitigation (const char *const_str) | |
16907 | { | |
16908 | char *token_save = NULL; | |
16909 | char *str = NULL; | |
16910 | ||
16911 | if (strcmp (const_str, "none") == 0) | |
16912 | { | |
16913 | aarch64_sls_hardening = SLS_NONE; | |
16914 | return; | |
16915 | } | |
16916 | if (strcmp (const_str, "all") == 0) | |
16917 | { | |
16918 | aarch64_sls_hardening = SLS_ALL; | |
16919 | return; | |
16920 | } | |
16921 | ||
16922 | char *str_root = xstrdup (const_str); | |
16923 | str = strtok_r (str_root, ",", &token_save); | |
16924 | if (!str) | |
16925 | error ("invalid argument given to %<-mharden-sls=%>"); | |
16926 | ||
16927 | int temp = SLS_NONE; | |
16928 | while (str) | |
16929 | { | |
16930 | if (strcmp (str, "blr") == 0) | |
16931 | temp |= SLS_BLR; | |
16932 | else if (strcmp (str, "retbr") == 0) | |
16933 | temp |= SLS_RETBR; | |
16934 | else if (strcmp (str, "none") == 0 || strcmp (str, "all") == 0) | |
16935 | { | |
16936 | error ("%<%s%> must be by itself for %<-mharden-sls=%>", str); | |
16937 | break; | |
16938 | } | |
16939 | else | |
16940 | { | |
16941 | error ("invalid argument %<%s%> for %<-mharden-sls=%>", str); | |
16942 | break; | |
16943 | } | |
16944 | str = strtok_r (NULL, ",", &token_save); | |
16945 | } | |
16946 | aarch64_sls_hardening = (aarch64_sls_hardening_type) temp; | |
16947 | free (str_root); | |
16948 | } | |
16949 | ||
efac62a3 ST |
16950 | /* Parses CONST_STR for branch protection features specified in |
16951 | aarch64_branch_protect_types, and set any global variables required. Returns | |
16952 | the parsing result and assigns LAST_STR to the last processed token from | |
16953 | CONST_STR so that it can be used for error reporting. */ | |
16954 | ||
16955 | static enum | |
16956 | aarch64_parse_opt_result aarch64_parse_branch_protection (const char *const_str, | |
16957 | char** last_str) | |
16958 | { | |
16959 | char *str_root = xstrdup (const_str); | |
16960 | char* token_save = NULL; | |
16961 | char *str = strtok_r (str_root, "+", &token_save); | |
16962 | enum aarch64_parse_opt_result res = AARCH64_PARSE_OK; | |
16963 | if (!str) | |
16964 | res = AARCH64_PARSE_MISSING_ARG; | |
16965 | else | |
16966 | { | |
16967 | char *next_str = strtok_r (NULL, "+", &token_save); | |
16968 | /* Reset the branch protection features to their defaults. */ | |
16969 | aarch64_handle_no_branch_protection (NULL, NULL); | |
16970 | ||
16971 | while (str && res == AARCH64_PARSE_OK) | |
16972 | { | |
16973 | const aarch64_branch_protect_type* type = aarch64_branch_protect_types; | |
16974 | bool found = false; | |
16975 | /* Search for this type. */ | |
16976 | while (type && type->name && !found && res == AARCH64_PARSE_OK) | |
16977 | { | |
16978 | if (strcmp (str, type->name) == 0) | |
16979 | { | |
16980 | found = true; | |
16981 | res = type->handler (str, next_str); | |
16982 | str = next_str; | |
16983 | next_str = strtok_r (NULL, "+", &token_save); | |
16984 | } | |
16985 | else | |
16986 | type++; | |
16987 | } | |
16988 | if (found && res == AARCH64_PARSE_OK) | |
16989 | { | |
16990 | bool found_subtype = true; | |
16991 | /* Loop through each token until we find one that isn't a | |
16992 | subtype. */ | |
16993 | while (found_subtype) | |
16994 | { | |
16995 | found_subtype = false; | |
16996 | const aarch64_branch_protect_type *subtype = type->subtypes; | |
16997 | /* Search for the subtype. */ | |
16998 | while (str && subtype && subtype->name && !found_subtype | |
16999 | && res == AARCH64_PARSE_OK) | |
17000 | { | |
17001 | if (strcmp (str, subtype->name) == 0) | |
17002 | { | |
17003 | found_subtype = true; | |
17004 | res = subtype->handler (str, next_str); | |
17005 | str = next_str; | |
17006 | next_str = strtok_r (NULL, "+", &token_save); | |
17007 | } | |
17008 | else | |
17009 | subtype++; | |
17010 | } | |
17011 | } | |
17012 | } | |
17013 | else if (!found) | |
17014 | res = AARCH64_PARSE_INVALID_ARG; | |
17015 | } | |
17016 | } | |
17017 | /* Copy the last processed token into the argument to pass it back. | |
17018 | Used by option and attribute validation to print the offending token. */ | |
17019 | if (last_str) | |
17020 | { | |
17021 | if (str) strcpy (*last_str, str); | |
17022 | else *last_str = NULL; | |
17023 | } | |
17024 | if (res == AARCH64_PARSE_OK) | |
17025 | { | |
17026 | /* If needed, alloc the accepted string then copy in const_str. | |
17027 | Used by override_option_after_change_1. */ | |
17028 | if (!accepted_branch_protection_string) | |
17029 | accepted_branch_protection_string = (char *) xmalloc ( | |
17030 | BRANCH_PROTECT_STR_MAX | |
17031 | + 1); | |
17032 | strncpy (accepted_branch_protection_string, const_str, | |
17033 | BRANCH_PROTECT_STR_MAX + 1); | |
17034 | /* Forcibly null-terminate. */ | |
17035 | accepted_branch_protection_string[BRANCH_PROTECT_STR_MAX] = '\0'; | |
17036 | } | |
17037 | return res; | |
17038 | } | |
17039 | ||
17040 | static bool | |
17041 | aarch64_validate_mbranch_protection (const char *const_str) | |
17042 | { | |
17043 | char *str = (char *) xmalloc (strlen (const_str)); | |
17044 | enum aarch64_parse_opt_result res = | |
17045 | aarch64_parse_branch_protection (const_str, &str); | |
17046 | if (res == AARCH64_PARSE_INVALID_ARG) | |
a9c697b8 | 17047 | error ("invalid argument %<%s%> for %<-mbranch-protection=%>", str); |
efac62a3 | 17048 | else if (res == AARCH64_PARSE_MISSING_ARG) |
a9c697b8 | 17049 | error ("missing argument for %<-mbranch-protection=%>"); |
efac62a3 ST |
17050 | free (str); |
17051 | return res == AARCH64_PARSE_OK; | |
17052 | } | |
17053 | ||
0cfff2a1 KT |
17054 | /* Validate a command-line -march option. Parse the arch and extensions |
17055 | (if any) specified in STR and throw errors if appropriate. Put the | |
361fb3ee KT |
17056 | results, if they are valid, in RES and ISA_FLAGS. Return whether the |
17057 | option is valid. */ | |
0cfff2a1 | 17058 | |
361fb3ee | 17059 | static bool |
0cfff2a1 | 17060 | aarch64_validate_march (const char *str, const struct processor **res, |
28108a53 | 17061 | uint64_t *isa_flags) |
0cfff2a1 | 17062 | { |
c7887347 | 17063 | std::string invalid_extension; |
0cfff2a1 | 17064 | enum aarch64_parse_opt_result parse_res |
c7887347 | 17065 | = aarch64_parse_arch (str, res, isa_flags, &invalid_extension); |
0cfff2a1 KT |
17066 | |
17067 | if (parse_res == AARCH64_PARSE_OK) | |
361fb3ee | 17068 | return true; |
0cfff2a1 KT |
17069 | |
17070 | switch (parse_res) | |
17071 | { | |
17072 | case AARCH64_PARSE_MISSING_ARG: | |
fb241da2 | 17073 | error ("missing arch name in %<-march=%s%>", str); |
0cfff2a1 KT |
17074 | break; |
17075 | case AARCH64_PARSE_INVALID_ARG: | |
a3f9f006 | 17076 | error ("unknown value %qs for %<-march%>", str); |
01f44038 | 17077 | aarch64_print_hint_for_arch (str); |
0cfff2a1 KT |
17078 | break; |
17079 | case AARCH64_PARSE_INVALID_FEATURE: | |
c7887347 ML |
17080 | error ("invalid feature modifier %qs in %<-march=%s%>", |
17081 | invalid_extension.c_str (), str); | |
17082 | aarch64_print_hint_for_extensions (invalid_extension); | |
0cfff2a1 KT |
17083 | break; |
17084 | default: | |
17085 | gcc_unreachable (); | |
17086 | } | |
361fb3ee KT |
17087 | |
17088 | return false; | |
0cfff2a1 KT |
17089 | } |
17090 | ||
17091 | /* Validate a command-line -mtune option. Parse the cpu | |
17092 | specified in STR and throw errors if appropriate. Put the | |
361fb3ee KT |
17093 | result, if it is valid, in RES. Return whether the option is |
17094 | valid. */ | |
0cfff2a1 | 17095 | |
361fb3ee | 17096 | static bool |
0cfff2a1 KT |
17097 | aarch64_validate_mtune (const char *str, const struct processor **res) |
17098 | { | |
17099 | enum aarch64_parse_opt_result parse_res | |
17100 | = aarch64_parse_tune (str, res); | |
17101 | ||
17102 | if (parse_res == AARCH64_PARSE_OK) | |
361fb3ee | 17103 | return true; |
0cfff2a1 KT |
17104 | |
17105 | switch (parse_res) | |
17106 | { | |
17107 | case AARCH64_PARSE_MISSING_ARG: | |
fb241da2 | 17108 | error ("missing cpu name in %<-mtune=%s%>", str); |
0cfff2a1 KT |
17109 | break; |
17110 | case AARCH64_PARSE_INVALID_ARG: | |
a3f9f006 | 17111 | error ("unknown value %qs for %<-mtune%>", str); |
01f44038 | 17112 | aarch64_print_hint_for_core (str); |
0cfff2a1 KT |
17113 | break; |
17114 | default: | |
17115 | gcc_unreachable (); | |
17116 | } | |
361fb3ee KT |
17117 | return false; |
17118 | } | |
17119 | ||
17120 | /* Return the CPU corresponding to the enum CPU. | |
17121 | If it doesn't specify a cpu, return the default. */ | |
17122 | ||
17123 | static const struct processor * | |
17124 | aarch64_get_tune_cpu (enum aarch64_processor cpu) | |
17125 | { | |
17126 | if (cpu != aarch64_none) | |
17127 | return &all_cores[cpu]; | |
17128 | ||
17129 | /* The & 0x3f is to extract the bottom 6 bits that encode the | |
17130 | default cpu as selected by the --with-cpu GCC configure option | |
17131 | in config.gcc. | |
17132 | ???: The whole TARGET_CPU_DEFAULT and AARCH64_CPU_DEFAULT_FLAGS | |
17133 | flags mechanism should be reworked to make it more sane. */ | |
17134 | return &all_cores[TARGET_CPU_DEFAULT & 0x3f]; | |
17135 | } | |
17136 | ||
17137 | /* Return the architecture corresponding to the enum ARCH. | |
17138 | If it doesn't specify a valid architecture, return the default. */ | |
17139 | ||
17140 | static const struct processor * | |
17141 | aarch64_get_arch (enum aarch64_arch arch) | |
17142 | { | |
17143 | if (arch != aarch64_no_arch) | |
17144 | return &all_architectures[arch]; | |
17145 | ||
17146 | const struct processor *cpu = &all_cores[TARGET_CPU_DEFAULT & 0x3f]; | |
17147 | ||
17148 | return &all_architectures[cpu->arch]; | |
0cfff2a1 KT |
17149 | } |
17150 | ||
43cacb12 RS |
17151 | /* Return the VG value associated with -msve-vector-bits= value VALUE. */ |
17152 | ||
17153 | static poly_uint16 | |
17154 | aarch64_convert_sve_vector_bits (aarch64_sve_vector_bits_enum value) | |
17155 | { | |
9b070057 RS |
17156 | /* 128-bit SVE and Advanced SIMD modes use different register layouts |
17157 | on big-endian targets, so we would need to forbid subregs that convert | |
17158 | from one to the other. By default a reinterpret sequence would then | |
17159 | involve a store to memory in one mode and a load back in the other. | |
17160 | Even if we optimize that sequence using reverse instructions, | |
17161 | it would still be a significant potential overhead. | |
17162 | ||
17163 | For now, it seems better to generate length-agnostic code for that | |
17164 | case instead. */ | |
17165 | if (value == SVE_SCALABLE | |
17166 | || (value == SVE_128 && BYTES_BIG_ENDIAN)) | |
43cacb12 RS |
17167 | return poly_uint16 (2, 2); |
17168 | else | |
17169 | return (int) value / 64; | |
17170 | } | |
17171 | ||
0cfff2a1 KT |
17172 | /* Implement TARGET_OPTION_OVERRIDE. This is called once in the beginning |
17173 | and is used to parse the -m{cpu,tune,arch} strings and setup the initial | |
17174 | tuning structs. In particular it must set selected_tune and | |
17175 | aarch64_isa_flags that define the available ISA features and tuning | |
17176 | decisions. It must also set selected_arch as this will be used to | |
17177 | output the .arch asm tags for each function. */ | |
17178 | ||
17179 | static void | |
17180 | aarch64_override_options (void) | |
17181 | { | |
28108a53 MM |
17182 | uint64_t cpu_isa = 0; |
17183 | uint64_t arch_isa = 0; | |
0cfff2a1 KT |
17184 | aarch64_isa_flags = 0; |
17185 | ||
361fb3ee KT |
17186 | bool valid_cpu = true; |
17187 | bool valid_tune = true; | |
17188 | bool valid_arch = true; | |
17189 | ||
0cfff2a1 KT |
17190 | selected_cpu = NULL; |
17191 | selected_arch = NULL; | |
17192 | selected_tune = NULL; | |
17193 | ||
a9ba2a9b MM |
17194 | if (aarch64_harden_sls_string) |
17195 | aarch64_validate_sls_mitigation (aarch64_harden_sls_string); | |
17196 | ||
efac62a3 ST |
17197 | if (aarch64_branch_protection_string) |
17198 | aarch64_validate_mbranch_protection (aarch64_branch_protection_string); | |
17199 | ||
0cfff2a1 KT |
17200 | /* -mcpu=CPU is shorthand for -march=ARCH_FOR_CPU, -mtune=CPU. |
17201 | If either of -march or -mtune is given, they override their | |
17202 | respective component of -mcpu. */ | |
17203 | if (aarch64_cpu_string) | |
361fb3ee KT |
17204 | valid_cpu = aarch64_validate_mcpu (aarch64_cpu_string, &selected_cpu, |
17205 | &cpu_isa); | |
0cfff2a1 KT |
17206 | |
17207 | if (aarch64_arch_string) | |
361fb3ee KT |
17208 | valid_arch = aarch64_validate_march (aarch64_arch_string, &selected_arch, |
17209 | &arch_isa); | |
0cfff2a1 KT |
17210 | |
17211 | if (aarch64_tune_string) | |
361fb3ee | 17212 | valid_tune = aarch64_validate_mtune (aarch64_tune_string, &selected_tune); |
43e9d192 | 17213 | |
6881e3c1 OH |
17214 | #ifdef SUBTARGET_OVERRIDE_OPTIONS |
17215 | SUBTARGET_OVERRIDE_OPTIONS; | |
17216 | #endif | |
17217 | ||
43e9d192 IB |
17218 | /* If the user did not specify a processor, choose the default |
17219 | one for them. This will be the CPU set during configuration using | |
a3cd0246 | 17220 | --with-cpu, otherwise it is "generic". */ |
43e9d192 IB |
17221 | if (!selected_cpu) |
17222 | { | |
0cfff2a1 KT |
17223 | if (selected_arch) |
17224 | { | |
17225 | selected_cpu = &all_cores[selected_arch->ident]; | |
17226 | aarch64_isa_flags = arch_isa; | |
361fb3ee | 17227 | explicit_arch = selected_arch->arch; |
0cfff2a1 KT |
17228 | } |
17229 | else | |
17230 | { | |
361fb3ee KT |
17231 | /* Get default configure-time CPU. */ |
17232 | selected_cpu = aarch64_get_tune_cpu (aarch64_none); | |
0cfff2a1 KT |
17233 | aarch64_isa_flags = TARGET_CPU_DEFAULT >> 6; |
17234 | } | |
361fb3ee KT |
17235 | |
17236 | if (selected_tune) | |
17237 | explicit_tune_core = selected_tune->ident; | |
0cfff2a1 KT |
17238 | } |
17239 | /* If both -mcpu and -march are specified check that they are architecturally | |
17240 | compatible, warn if they're not and prefer the -march ISA flags. */ | |
17241 | else if (selected_arch) | |
17242 | { | |
17243 | if (selected_arch->arch != selected_cpu->arch) | |
17244 | { | |
a3f9f006 | 17245 | warning (0, "switch %<-mcpu=%s%> conflicts with %<-march=%s%> switch", |
349297b6 JH |
17246 | aarch64_cpu_string, |
17247 | aarch64_arch_string); | |
0cfff2a1 KT |
17248 | } |
17249 | aarch64_isa_flags = arch_isa; | |
361fb3ee KT |
17250 | explicit_arch = selected_arch->arch; |
17251 | explicit_tune_core = selected_tune ? selected_tune->ident | |
17252 | : selected_cpu->ident; | |
0cfff2a1 KT |
17253 | } |
17254 | else | |
17255 | { | |
17256 | /* -mcpu but no -march. */ | |
17257 | aarch64_isa_flags = cpu_isa; | |
361fb3ee KT |
17258 | explicit_tune_core = selected_tune ? selected_tune->ident |
17259 | : selected_cpu->ident; | |
17260 | gcc_assert (selected_cpu); | |
17261 | selected_arch = &all_architectures[selected_cpu->arch]; | |
17262 | explicit_arch = selected_arch->arch; | |
43e9d192 IB |
17263 | } |
17264 | ||
0cfff2a1 KT |
17265 | /* Set the arch as well as we will need it when outputing |
17266 | the .arch directive in assembly. */ | |
17267 | if (!selected_arch) | |
17268 | { | |
17269 | gcc_assert (selected_cpu); | |
17270 | selected_arch = &all_architectures[selected_cpu->arch]; | |
17271 | } | |
43e9d192 | 17272 | |
43e9d192 | 17273 | if (!selected_tune) |
3edaf26d | 17274 | selected_tune = selected_cpu; |
43e9d192 | 17275 | |
c7ff4f0f SD |
17276 | if (aarch64_enable_bti == 2) |
17277 | { | |
17278 | #ifdef TARGET_ENABLE_BTI | |
17279 | aarch64_enable_bti = 1; | |
17280 | #else | |
17281 | aarch64_enable_bti = 0; | |
17282 | #endif | |
17283 | } | |
17284 | ||
17285 | /* Return address signing is currently not supported for ILP32 targets. For | |
17286 | LP64 targets use the configured option in the absence of a command-line | |
17287 | option for -mbranch-protection. */ | |
17288 | if (!TARGET_ILP32 && accepted_branch_protection_string == NULL) | |
17289 | { | |
17290 | #ifdef TARGET_ENABLE_PAC_RET | |
17291 | aarch64_ra_sign_scope = AARCH64_FUNCTION_NON_LEAF; | |
c7ff4f0f SD |
17292 | #else |
17293 | aarch64_ra_sign_scope = AARCH64_FUNCTION_NONE; | |
17294 | #endif | |
17295 | } | |
17296 | ||
0cfff2a1 KT |
17297 | #ifndef HAVE_AS_MABI_OPTION |
17298 | /* The compiler may have been configured with 2.23.* binutils, which does | |
17299 | not have support for ILP32. */ | |
17300 | if (TARGET_ILP32) | |
a3f9f006 | 17301 | error ("assembler does not support %<-mabi=ilp32%>"); |
0cfff2a1 | 17302 | #endif |
43e9d192 | 17303 | |
43cacb12 RS |
17304 | /* Convert -msve-vector-bits to a VG count. */ |
17305 | aarch64_sve_vg = aarch64_convert_sve_vector_bits (aarch64_sve_vector_bits); | |
17306 | ||
db58fd89 | 17307 | if (aarch64_ra_sign_scope != AARCH64_FUNCTION_NONE && TARGET_ILP32) |
a3f9f006 | 17308 | sorry ("return address signing is only supported for %<-mabi=lp64%>"); |
db58fd89 | 17309 | |
361fb3ee KT |
17310 | /* Make sure we properly set up the explicit options. */ |
17311 | if ((aarch64_cpu_string && valid_cpu) | |
17312 | || (aarch64_tune_string && valid_tune)) | |
17313 | gcc_assert (explicit_tune_core != aarch64_none); | |
17314 | ||
17315 | if ((aarch64_cpu_string && valid_cpu) | |
17316 | || (aarch64_arch_string && valid_arch)) | |
17317 | gcc_assert (explicit_arch != aarch64_no_arch); | |
17318 | ||
5f7dbaa0 RE |
17319 | /* The pass to insert speculation tracking runs before |
17320 | shrink-wrapping and the latter does not know how to update the | |
17321 | tracking status. So disable it in this case. */ | |
17322 | if (aarch64_track_speculation) | |
17323 | flag_shrink_wrap = 0; | |
17324 | ||
0cfff2a1 KT |
17325 | aarch64_override_options_internal (&global_options); |
17326 | ||
17327 | /* Save these options as the default ones in case we push and pop them later | |
17328 | while processing functions with potential target attributes. */ | |
17329 | target_option_default_node = target_option_current_node | |
ba948b37 | 17330 | = build_target_option_node (&global_options, &global_options_set); |
43e9d192 IB |
17331 | } |
17332 | ||
17333 | /* Implement targetm.override_options_after_change. */ | |
17334 | ||
17335 | static void | |
17336 | aarch64_override_options_after_change (void) | |
17337 | { | |
0cfff2a1 | 17338 | aarch64_override_options_after_change_1 (&global_options); |
43e9d192 IB |
17339 | } |
17340 | ||
29a14a1a MK |
17341 | /* Implement the TARGET_OFFLOAD_OPTIONS hook. */ |
17342 | static char * | |
17343 | aarch64_offload_options (void) | |
17344 | { | |
17345 | if (TARGET_ILP32) | |
17346 | return xstrdup ("-foffload-abi=ilp32"); | |
17347 | else | |
17348 | return xstrdup ("-foffload-abi=lp64"); | |
17349 | } | |
17350 | ||
43e9d192 IB |
17351 | static struct machine_function * |
17352 | aarch64_init_machine_status (void) | |
17353 | { | |
17354 | struct machine_function *machine; | |
766090c2 | 17355 | machine = ggc_cleared_alloc<machine_function> (); |
43e9d192 IB |
17356 | return machine; |
17357 | } | |
17358 | ||
17359 | void | |
17360 | aarch64_init_expanders (void) | |
17361 | { | |
17362 | init_machine_status = aarch64_init_machine_status; | |
17363 | } | |
17364 | ||
17365 | /* A checking mechanism for the implementation of the various code models. */ | |
17366 | static void | |
0cfff2a1 | 17367 | initialize_aarch64_code_model (struct gcc_options *opts) |
43e9d192 | 17368 | { |
6c0ab626 X |
17369 | aarch64_cmodel = opts->x_aarch64_cmodel_var; |
17370 | switch (opts->x_aarch64_cmodel_var) | |
17371 | { | |
17372 | case AARCH64_CMODEL_TINY: | |
17373 | if (opts->x_flag_pic) | |
17374 | aarch64_cmodel = AARCH64_CMODEL_TINY_PIC; | |
17375 | break; | |
17376 | case AARCH64_CMODEL_SMALL: | |
17377 | if (opts->x_flag_pic) | |
17378 | { | |
34ecdb0f | 17379 | #ifdef HAVE_AS_SMALL_PIC_RELOCS |
6c0ab626 X |
17380 | aarch64_cmodel = (flag_pic == 2 |
17381 | ? AARCH64_CMODEL_SMALL_PIC | |
17382 | : AARCH64_CMODEL_SMALL_SPIC); | |
34ecdb0f | 17383 | #else |
6c0ab626 | 17384 | aarch64_cmodel = AARCH64_CMODEL_SMALL_PIC; |
34ecdb0f | 17385 | #endif |
6c0ab626 X |
17386 | } |
17387 | break; | |
17388 | case AARCH64_CMODEL_LARGE: | |
17389 | if (opts->x_flag_pic) | |
17390 | sorry ("code model %qs with %<-f%s%>", "large", | |
17391 | opts->x_flag_pic > 1 ? "PIC" : "pic"); | |
17392 | if (opts->x_aarch64_abi == AARCH64_ABI_ILP32) | |
17393 | sorry ("code model %qs not supported in ilp32 mode", "large"); | |
17394 | break; | |
17395 | case AARCH64_CMODEL_TINY_PIC: | |
17396 | case AARCH64_CMODEL_SMALL_PIC: | |
17397 | case AARCH64_CMODEL_SMALL_SPIC: | |
17398 | gcc_unreachable (); | |
17399 | } | |
43e9d192 IB |
17400 | } |
17401 | ||
361fb3ee KT |
17402 | /* Implement TARGET_OPTION_SAVE. */ |
17403 | ||
17404 | static void | |
ba948b37 JJ |
17405 | aarch64_option_save (struct cl_target_option *ptr, struct gcc_options *opts, |
17406 | struct gcc_options */* opts_set */) | |
361fb3ee KT |
17407 | { |
17408 | ptr->x_aarch64_override_tune_string = opts->x_aarch64_override_tune_string; | |
efac62a3 ST |
17409 | ptr->x_aarch64_branch_protection_string |
17410 | = opts->x_aarch64_branch_protection_string; | |
361fb3ee KT |
17411 | } |
17412 | ||
17413 | /* Implements TARGET_OPTION_RESTORE. Restore the backend codegen decisions | |
17414 | using the information saved in PTR. */ | |
17415 | ||
17416 | static void | |
ba948b37 JJ |
17417 | aarch64_option_restore (struct gcc_options *opts, |
17418 | struct gcc_options */* opts_set */, | |
17419 | struct cl_target_option *ptr) | |
361fb3ee | 17420 | { |
361fb3ee KT |
17421 | opts->x_explicit_arch = ptr->x_explicit_arch; |
17422 | selected_arch = aarch64_get_arch (ptr->x_explicit_arch); | |
1a5c8291 RS |
17423 | opts->x_explicit_tune_core = ptr->x_explicit_tune_core; |
17424 | if (opts->x_explicit_tune_core == aarch64_none | |
17425 | && opts->x_explicit_arch != aarch64_no_arch) | |
17426 | selected_tune = &all_cores[selected_arch->ident]; | |
17427 | else | |
17428 | selected_tune = aarch64_get_tune_cpu (ptr->x_explicit_tune_core); | |
361fb3ee | 17429 | opts->x_aarch64_override_tune_string = ptr->x_aarch64_override_tune_string; |
efac62a3 ST |
17430 | opts->x_aarch64_branch_protection_string |
17431 | = ptr->x_aarch64_branch_protection_string; | |
17432 | if (opts->x_aarch64_branch_protection_string) | |
17433 | { | |
17434 | aarch64_parse_branch_protection (opts->x_aarch64_branch_protection_string, | |
17435 | NULL); | |
17436 | } | |
361fb3ee KT |
17437 | |
17438 | aarch64_override_options_internal (opts); | |
17439 | } | |
17440 | ||
17441 | /* Implement TARGET_OPTION_PRINT. */ | |
17442 | ||
17443 | static void | |
17444 | aarch64_option_print (FILE *file, int indent, struct cl_target_option *ptr) | |
17445 | { | |
17446 | const struct processor *cpu | |
17447 | = aarch64_get_tune_cpu (ptr->x_explicit_tune_core); | |
28108a53 | 17448 | uint64_t isa_flags = ptr->x_aarch64_isa_flags; |
361fb3ee | 17449 | const struct processor *arch = aarch64_get_arch (ptr->x_explicit_arch); |
054b4005 | 17450 | std::string extension |
04a99ebe | 17451 | = aarch64_get_extension_string_for_isa_flags (isa_flags, arch->flags); |
361fb3ee KT |
17452 | |
17453 | fprintf (file, "%*sselected tune = %s\n", indent, "", cpu->name); | |
054b4005 JG |
17454 | fprintf (file, "%*sselected arch = %s%s\n", indent, "", |
17455 | arch->name, extension.c_str ()); | |
361fb3ee KT |
17456 | } |
17457 | ||
d78006d9 KT |
17458 | static GTY(()) tree aarch64_previous_fndecl; |
17459 | ||
e4ea20c8 KT |
17460 | void |
17461 | aarch64_reset_previous_fndecl (void) | |
17462 | { | |
17463 | aarch64_previous_fndecl = NULL; | |
17464 | } | |
17465 | ||
acfc1ac1 KT |
17466 | /* Restore or save the TREE_TARGET_GLOBALS from or to NEW_TREE. |
17467 | Used by aarch64_set_current_function and aarch64_pragma_target_parse to | |
17468 | make sure optab availability predicates are recomputed when necessary. */ | |
17469 | ||
17470 | void | |
17471 | aarch64_save_restore_target_globals (tree new_tree) | |
17472 | { | |
17473 | if (TREE_TARGET_GLOBALS (new_tree)) | |
17474 | restore_target_globals (TREE_TARGET_GLOBALS (new_tree)); | |
17475 | else if (new_tree == target_option_default_node) | |
17476 | restore_target_globals (&default_target_globals); | |
17477 | else | |
17478 | TREE_TARGET_GLOBALS (new_tree) = save_target_globals_default_opts (); | |
17479 | } | |
17480 | ||
d78006d9 KT |
17481 | /* Implement TARGET_SET_CURRENT_FUNCTION. Unpack the codegen decisions |
17482 | like tuning and ISA features from the DECL_FUNCTION_SPECIFIC_TARGET | |
17483 | of the function, if such exists. This function may be called multiple | |
17484 | times on a single function so use aarch64_previous_fndecl to avoid | |
17485 | setting up identical state. */ | |
17486 | ||
17487 | static void | |
17488 | aarch64_set_current_function (tree fndecl) | |
17489 | { | |
acfc1ac1 KT |
17490 | if (!fndecl || fndecl == aarch64_previous_fndecl) |
17491 | return; | |
17492 | ||
d78006d9 KT |
17493 | tree old_tree = (aarch64_previous_fndecl |
17494 | ? DECL_FUNCTION_SPECIFIC_TARGET (aarch64_previous_fndecl) | |
17495 | : NULL_TREE); | |
17496 | ||
acfc1ac1 | 17497 | tree new_tree = DECL_FUNCTION_SPECIFIC_TARGET (fndecl); |
d78006d9 | 17498 | |
acfc1ac1 KT |
17499 | /* If current function has no attributes but the previous one did, |
17500 | use the default node. */ | |
17501 | if (!new_tree && old_tree) | |
17502 | new_tree = target_option_default_node; | |
d78006d9 | 17503 | |
acfc1ac1 KT |
17504 | /* If nothing to do, return. #pragma GCC reset or #pragma GCC pop to |
17505 | the default have been handled by aarch64_save_restore_target_globals from | |
17506 | aarch64_pragma_target_parse. */ | |
17507 | if (old_tree == new_tree) | |
17508 | return; | |
d78006d9 | 17509 | |
acfc1ac1 | 17510 | aarch64_previous_fndecl = fndecl; |
6e17a23b | 17511 | |
acfc1ac1 | 17512 | /* First set the target options. */ |
ba948b37 JJ |
17513 | cl_target_option_restore (&global_options, &global_options_set, |
17514 | TREE_TARGET_OPTION (new_tree)); | |
6e17a23b | 17515 | |
acfc1ac1 | 17516 | aarch64_save_restore_target_globals (new_tree); |
d78006d9 | 17517 | } |
361fb3ee | 17518 | |
5a2c8331 KT |
17519 | /* Enum describing the various ways we can handle attributes. |
17520 | In many cases we can reuse the generic option handling machinery. */ | |
17521 | ||
17522 | enum aarch64_attr_opt_type | |
17523 | { | |
17524 | aarch64_attr_mask, /* Attribute should set a bit in target_flags. */ | |
17525 | aarch64_attr_bool, /* Attribute sets or unsets a boolean variable. */ | |
17526 | aarch64_attr_enum, /* Attribute sets an enum variable. */ | |
17527 | aarch64_attr_custom /* Attribute requires a custom handling function. */ | |
17528 | }; | |
17529 | ||
17530 | /* All the information needed to handle a target attribute. | |
17531 | NAME is the name of the attribute. | |
9c582551 | 17532 | ATTR_TYPE specifies the type of behavior of the attribute as described |
5a2c8331 KT |
17533 | in the definition of enum aarch64_attr_opt_type. |
17534 | ALLOW_NEG is true if the attribute supports a "no-" form. | |
ab93e9b7 SE |
17535 | HANDLER is the function that takes the attribute string as an argument |
17536 | It is needed only when the ATTR_TYPE is aarch64_attr_custom. | |
5a2c8331 | 17537 | OPT_NUM is the enum specifying the option that the attribute modifies. |
9c582551 | 17538 | This is needed for attributes that mirror the behavior of a command-line |
5a2c8331 KT |
17539 | option, that is it has ATTR_TYPE aarch64_attr_mask, aarch64_attr_bool or |
17540 | aarch64_attr_enum. */ | |
17541 | ||
17542 | struct aarch64_attribute_info | |
17543 | { | |
17544 | const char *name; | |
17545 | enum aarch64_attr_opt_type attr_type; | |
17546 | bool allow_neg; | |
ab93e9b7 | 17547 | bool (*handler) (const char *); |
5a2c8331 KT |
17548 | enum opt_code opt_num; |
17549 | }; | |
17550 | ||
ab93e9b7 | 17551 | /* Handle the ARCH_STR argument to the arch= target attribute. */ |
5a2c8331 KT |
17552 | |
17553 | static bool | |
ab93e9b7 | 17554 | aarch64_handle_attr_arch (const char *str) |
5a2c8331 KT |
17555 | { |
17556 | const struct processor *tmp_arch = NULL; | |
c7887347 | 17557 | std::string invalid_extension; |
5a2c8331 | 17558 | enum aarch64_parse_opt_result parse_res |
c7887347 | 17559 | = aarch64_parse_arch (str, &tmp_arch, &aarch64_isa_flags, &invalid_extension); |
5a2c8331 KT |
17560 | |
17561 | if (parse_res == AARCH64_PARSE_OK) | |
17562 | { | |
17563 | gcc_assert (tmp_arch); | |
17564 | selected_arch = tmp_arch; | |
17565 | explicit_arch = selected_arch->arch; | |
17566 | return true; | |
17567 | } | |
17568 | ||
17569 | switch (parse_res) | |
17570 | { | |
17571 | case AARCH64_PARSE_MISSING_ARG: | |
ab93e9b7 | 17572 | error ("missing name in %<target(\"arch=\")%> pragma or attribute"); |
5a2c8331 KT |
17573 | break; |
17574 | case AARCH64_PARSE_INVALID_ARG: | |
ab93e9b7 | 17575 | error ("invalid name (\"%s\") in %<target(\"arch=\")%> pragma or attribute", str); |
01f44038 | 17576 | aarch64_print_hint_for_arch (str); |
5a2c8331 KT |
17577 | break; |
17578 | case AARCH64_PARSE_INVALID_FEATURE: | |
c7887347 ML |
17579 | error ("invalid feature modifier %s of value (\"%s\") in " |
17580 | "%<target()%> pragma or attribute", invalid_extension.c_str (), str); | |
17581 | aarch64_print_hint_for_extensions (invalid_extension); | |
5a2c8331 KT |
17582 | break; |
17583 | default: | |
17584 | gcc_unreachable (); | |
17585 | } | |
17586 | ||
17587 | return false; | |
17588 | } | |
17589 | ||
ab93e9b7 | 17590 | /* Handle the argument CPU_STR to the cpu= target attribute. */ |
5a2c8331 KT |
17591 | |
17592 | static bool | |
ab93e9b7 | 17593 | aarch64_handle_attr_cpu (const char *str) |
5a2c8331 KT |
17594 | { |
17595 | const struct processor *tmp_cpu = NULL; | |
c7887347 | 17596 | std::string invalid_extension; |
5a2c8331 | 17597 | enum aarch64_parse_opt_result parse_res |
c7887347 | 17598 | = aarch64_parse_cpu (str, &tmp_cpu, &aarch64_isa_flags, &invalid_extension); |
5a2c8331 KT |
17599 | |
17600 | if (parse_res == AARCH64_PARSE_OK) | |
17601 | { | |
17602 | gcc_assert (tmp_cpu); | |
17603 | selected_tune = tmp_cpu; | |
17604 | explicit_tune_core = selected_tune->ident; | |
17605 | ||
17606 | selected_arch = &all_architectures[tmp_cpu->arch]; | |
17607 | explicit_arch = selected_arch->arch; | |
17608 | return true; | |
17609 | } | |
17610 | ||
17611 | switch (parse_res) | |
17612 | { | |
17613 | case AARCH64_PARSE_MISSING_ARG: | |
ab93e9b7 | 17614 | error ("missing name in %<target(\"cpu=\")%> pragma or attribute"); |
5a2c8331 KT |
17615 | break; |
17616 | case AARCH64_PARSE_INVALID_ARG: | |
ab93e9b7 | 17617 | error ("invalid name (\"%s\") in %<target(\"cpu=\")%> pragma or attribute", str); |
01f44038 | 17618 | aarch64_print_hint_for_core (str); |
5a2c8331 KT |
17619 | break; |
17620 | case AARCH64_PARSE_INVALID_FEATURE: | |
c7887347 ML |
17621 | error ("invalid feature modifier %s of value (\"%s\") in " |
17622 | "%<target()%> pragma or attribute", invalid_extension.c_str (), str); | |
17623 | aarch64_print_hint_for_extensions (invalid_extension); | |
5a2c8331 KT |
17624 | break; |
17625 | default: | |
17626 | gcc_unreachable (); | |
17627 | } | |
17628 | ||
17629 | return false; | |
17630 | } | |
17631 | ||
efac62a3 ST |
17632 | /* Handle the argument STR to the branch-protection= attribute. */ |
17633 | ||
17634 | static bool | |
17635 | aarch64_handle_attr_branch_protection (const char* str) | |
17636 | { | |
81e40f3a | 17637 | char *err_str = (char *) xmalloc (strlen (str) + 1); |
efac62a3 ST |
17638 | enum aarch64_parse_opt_result res = aarch64_parse_branch_protection (str, |
17639 | &err_str); | |
17640 | bool success = false; | |
17641 | switch (res) | |
17642 | { | |
17643 | case AARCH64_PARSE_MISSING_ARG: | |
17644 | error ("missing argument to %<target(\"branch-protection=\")%> pragma or" | |
17645 | " attribute"); | |
17646 | break; | |
17647 | case AARCH64_PARSE_INVALID_ARG: | |
17648 | error ("invalid protection type (\"%s\") in %<target(\"branch-protection" | |
17649 | "=\")%> pragma or attribute", err_str); | |
17650 | break; | |
17651 | case AARCH64_PARSE_OK: | |
17652 | success = true; | |
17653 | /* Fall through. */ | |
17654 | case AARCH64_PARSE_INVALID_FEATURE: | |
17655 | break; | |
17656 | default: | |
17657 | gcc_unreachable (); | |
17658 | } | |
17659 | free (err_str); | |
17660 | return success; | |
17661 | } | |
17662 | ||
ab93e9b7 | 17663 | /* Handle the argument STR to the tune= target attribute. */ |
5a2c8331 KT |
17664 | |
17665 | static bool | |
ab93e9b7 | 17666 | aarch64_handle_attr_tune (const char *str) |
5a2c8331 KT |
17667 | { |
17668 | const struct processor *tmp_tune = NULL; | |
17669 | enum aarch64_parse_opt_result parse_res | |
17670 | = aarch64_parse_tune (str, &tmp_tune); | |
17671 | ||
17672 | if (parse_res == AARCH64_PARSE_OK) | |
17673 | { | |
17674 | gcc_assert (tmp_tune); | |
17675 | selected_tune = tmp_tune; | |
17676 | explicit_tune_core = selected_tune->ident; | |
17677 | return true; | |
17678 | } | |
17679 | ||
17680 | switch (parse_res) | |
17681 | { | |
17682 | case AARCH64_PARSE_INVALID_ARG: | |
ab93e9b7 | 17683 | error ("invalid name (\"%s\") in %<target(\"tune=\")%> pragma or attribute", str); |
01f44038 | 17684 | aarch64_print_hint_for_core (str); |
5a2c8331 KT |
17685 | break; |
17686 | default: | |
17687 | gcc_unreachable (); | |
17688 | } | |
17689 | ||
17690 | return false; | |
17691 | } | |
17692 | ||
17693 | /* Parse an architecture extensions target attribute string specified in STR. | |
17694 | For example "+fp+nosimd". Show any errors if needed. Return TRUE | |
17695 | if successful. Update aarch64_isa_flags to reflect the ISA features | |
ab93e9b7 | 17696 | modified. */ |
5a2c8331 KT |
17697 | |
17698 | static bool | |
ab93e9b7 | 17699 | aarch64_handle_attr_isa_flags (char *str) |
5a2c8331 KT |
17700 | { |
17701 | enum aarch64_parse_opt_result parse_res; | |
28108a53 | 17702 | uint64_t isa_flags = aarch64_isa_flags; |
5a2c8331 | 17703 | |
e4ea20c8 KT |
17704 | /* We allow "+nothing" in the beginning to clear out all architectural |
17705 | features if the user wants to handpick specific features. */ | |
17706 | if (strncmp ("+nothing", str, 8) == 0) | |
17707 | { | |
17708 | isa_flags = 0; | |
17709 | str += 8; | |
17710 | } | |
17711 | ||
c7887347 ML |
17712 | std::string invalid_extension; |
17713 | parse_res = aarch64_parse_extension (str, &isa_flags, &invalid_extension); | |
5a2c8331 KT |
17714 | |
17715 | if (parse_res == AARCH64_PARSE_OK) | |
17716 | { | |
17717 | aarch64_isa_flags = isa_flags; | |
17718 | return true; | |
17719 | } | |
17720 | ||
17721 | switch (parse_res) | |
17722 | { | |
17723 | case AARCH64_PARSE_MISSING_ARG: | |
ab93e9b7 | 17724 | error ("missing value in %<target()%> pragma or attribute"); |
5a2c8331 KT |
17725 | break; |
17726 | ||
17727 | case AARCH64_PARSE_INVALID_FEATURE: | |
c7887347 ML |
17728 | error ("invalid feature modifier %s of value (\"%s\") in " |
17729 | "%<target()%> pragma or attribute", invalid_extension.c_str (), str); | |
5a2c8331 KT |
17730 | break; |
17731 | ||
17732 | default: | |
17733 | gcc_unreachable (); | |
17734 | } | |
17735 | ||
17736 | return false; | |
17737 | } | |
17738 | ||
17739 | /* The target attributes that we support. On top of these we also support just | |
17740 | ISA extensions, like __attribute__ ((target ("+crc"))), but that case is | |
17741 | handled explicitly in aarch64_process_one_target_attr. */ | |
17742 | ||
17743 | static const struct aarch64_attribute_info aarch64_attributes[] = | |
17744 | { | |
17745 | { "general-regs-only", aarch64_attr_mask, false, NULL, | |
17746 | OPT_mgeneral_regs_only }, | |
17747 | { "fix-cortex-a53-835769", aarch64_attr_bool, true, NULL, | |
17748 | OPT_mfix_cortex_a53_835769 }, | |
48bb1a55 CL |
17749 | { "fix-cortex-a53-843419", aarch64_attr_bool, true, NULL, |
17750 | OPT_mfix_cortex_a53_843419 }, | |
5a2c8331 | 17751 | { "cmodel", aarch64_attr_enum, false, NULL, OPT_mcmodel_ }, |
675d044c | 17752 | { "strict-align", aarch64_attr_mask, true, NULL, OPT_mstrict_align }, |
5a2c8331 KT |
17753 | { "omit-leaf-frame-pointer", aarch64_attr_bool, true, NULL, |
17754 | OPT_momit_leaf_frame_pointer }, | |
17755 | { "tls-dialect", aarch64_attr_enum, false, NULL, OPT_mtls_dialect_ }, | |
17756 | { "arch", aarch64_attr_custom, false, aarch64_handle_attr_arch, | |
17757 | OPT_march_ }, | |
17758 | { "cpu", aarch64_attr_custom, false, aarch64_handle_attr_cpu, OPT_mcpu_ }, | |
17759 | { "tune", aarch64_attr_custom, false, aarch64_handle_attr_tune, | |
17760 | OPT_mtune_ }, | |
efac62a3 ST |
17761 | { "branch-protection", aarch64_attr_custom, false, |
17762 | aarch64_handle_attr_branch_protection, OPT_mbranch_protection_ }, | |
db58fd89 JW |
17763 | { "sign-return-address", aarch64_attr_enum, false, NULL, |
17764 | OPT_msign_return_address_ }, | |
9e02b45f ML |
17765 | { "outline-atomics", aarch64_attr_bool, true, NULL, |
17766 | OPT_moutline_atomics}, | |
5a2c8331 KT |
17767 | { NULL, aarch64_attr_custom, false, NULL, OPT____ } |
17768 | }; | |
17769 | ||
17770 | /* Parse ARG_STR which contains the definition of one target attribute. | |
ab93e9b7 | 17771 | Show appropriate errors if any or return true if the attribute is valid. */ |
5a2c8331 KT |
17772 | |
17773 | static bool | |
ab93e9b7 | 17774 | aarch64_process_one_target_attr (char *arg_str) |
5a2c8331 KT |
17775 | { |
17776 | bool invert = false; | |
17777 | ||
17778 | size_t len = strlen (arg_str); | |
17779 | ||
17780 | if (len == 0) | |
17781 | { | |
ab93e9b7 | 17782 | error ("malformed %<target()%> pragma or attribute"); |
5a2c8331 KT |
17783 | return false; |
17784 | } | |
17785 | ||
17786 | char *str_to_check = (char *) alloca (len + 1); | |
17787 | strcpy (str_to_check, arg_str); | |
17788 | ||
5a2c8331 KT |
17789 | /* We have something like __attribute__ ((target ("+fp+nosimd"))). |
17790 | It is easier to detect and handle it explicitly here rather than going | |
17791 | through the machinery for the rest of the target attributes in this | |
17792 | function. */ | |
17793 | if (*str_to_check == '+') | |
ab93e9b7 | 17794 | return aarch64_handle_attr_isa_flags (str_to_check); |
5a2c8331 | 17795 | |
c0129e2d | 17796 | if (len > 3 && startswith (str_to_check, "no-")) |
5a2c8331 KT |
17797 | { |
17798 | invert = true; | |
17799 | str_to_check += 3; | |
17800 | } | |
17801 | char *arg = strchr (str_to_check, '='); | |
17802 | ||
17803 | /* If we found opt=foo then terminate STR_TO_CHECK at the '=' | |
17804 | and point ARG to "foo". */ | |
17805 | if (arg) | |
17806 | { | |
17807 | *arg = '\0'; | |
17808 | arg++; | |
17809 | } | |
17810 | const struct aarch64_attribute_info *p_attr; | |
16d12992 | 17811 | bool found = false; |
5a2c8331 KT |
17812 | for (p_attr = aarch64_attributes; p_attr->name; p_attr++) |
17813 | { | |
17814 | /* If the names don't match up, or the user has given an argument | |
17815 | to an attribute that doesn't accept one, or didn't give an argument | |
17816 | to an attribute that expects one, fail to match. */ | |
17817 | if (strcmp (str_to_check, p_attr->name) != 0) | |
17818 | continue; | |
17819 | ||
16d12992 | 17820 | found = true; |
5a2c8331 KT |
17821 | bool attr_need_arg_p = p_attr->attr_type == aarch64_attr_custom |
17822 | || p_attr->attr_type == aarch64_attr_enum; | |
17823 | ||
17824 | if (attr_need_arg_p ^ (arg != NULL)) | |
17825 | { | |
ab93e9b7 | 17826 | error ("pragma or attribute %<target(\"%s\")%> does not accept an argument", str_to_check); |
5a2c8331 KT |
17827 | return false; |
17828 | } | |
17829 | ||
17830 | /* If the name matches but the attribute does not allow "no-" versions | |
17831 | then we can't match. */ | |
17832 | if (invert && !p_attr->allow_neg) | |
17833 | { | |
ab93e9b7 | 17834 | error ("pragma or attribute %<target(\"%s\")%> does not allow a negated form", str_to_check); |
5a2c8331 KT |
17835 | return false; |
17836 | } | |
17837 | ||
17838 | switch (p_attr->attr_type) | |
17839 | { | |
17840 | /* Has a custom handler registered. | |
17841 | For example, cpu=, arch=, tune=. */ | |
17842 | case aarch64_attr_custom: | |
17843 | gcc_assert (p_attr->handler); | |
ab93e9b7 | 17844 | if (!p_attr->handler (arg)) |
5a2c8331 KT |
17845 | return false; |
17846 | break; | |
17847 | ||
17848 | /* Either set or unset a boolean option. */ | |
17849 | case aarch64_attr_bool: | |
17850 | { | |
17851 | struct cl_decoded_option decoded; | |
17852 | ||
17853 | generate_option (p_attr->opt_num, NULL, !invert, | |
17854 | CL_TARGET, &decoded); | |
17855 | aarch64_handle_option (&global_options, &global_options_set, | |
17856 | &decoded, input_location); | |
17857 | break; | |
17858 | } | |
17859 | /* Set or unset a bit in the target_flags. aarch64_handle_option | |
17860 | should know what mask to apply given the option number. */ | |
17861 | case aarch64_attr_mask: | |
17862 | { | |
17863 | struct cl_decoded_option decoded; | |
17864 | /* We only need to specify the option number. | |
17865 | aarch64_handle_option will know which mask to apply. */ | |
17866 | decoded.opt_index = p_attr->opt_num; | |
17867 | decoded.value = !invert; | |
17868 | aarch64_handle_option (&global_options, &global_options_set, | |
17869 | &decoded, input_location); | |
17870 | break; | |
17871 | } | |
17872 | /* Use the option setting machinery to set an option to an enum. */ | |
17873 | case aarch64_attr_enum: | |
17874 | { | |
17875 | gcc_assert (arg); | |
17876 | bool valid; | |
17877 | int value; | |
17878 | valid = opt_enum_arg_to_value (p_attr->opt_num, arg, | |
17879 | &value, CL_TARGET); | |
17880 | if (valid) | |
17881 | { | |
17882 | set_option (&global_options, NULL, p_attr->opt_num, value, | |
17883 | NULL, DK_UNSPECIFIED, input_location, | |
17884 | global_dc); | |
17885 | } | |
17886 | else | |
17887 | { | |
ab93e9b7 | 17888 | error ("pragma or attribute %<target(\"%s=%s\")%> is not valid", str_to_check, arg); |
5a2c8331 KT |
17889 | } |
17890 | break; | |
17891 | } | |
17892 | default: | |
17893 | gcc_unreachable (); | |
17894 | } | |
17895 | } | |
17896 | ||
16d12992 KT |
17897 | /* If we reached here we either have found an attribute and validated |
17898 | it or didn't match any. If we matched an attribute but its arguments | |
17899 | were malformed we will have returned false already. */ | |
17900 | return found; | |
5a2c8331 KT |
17901 | } |
17902 | ||
17903 | /* Count how many times the character C appears in | |
17904 | NULL-terminated string STR. */ | |
17905 | ||
17906 | static unsigned int | |
17907 | num_occurences_in_str (char c, char *str) | |
17908 | { | |
17909 | unsigned int res = 0; | |
17910 | while (*str != '\0') | |
17911 | { | |
17912 | if (*str == c) | |
17913 | res++; | |
17914 | ||
17915 | str++; | |
17916 | } | |
17917 | ||
17918 | return res; | |
17919 | } | |
17920 | ||
17921 | /* Parse the tree in ARGS that contains the target attribute information | |
ab93e9b7 | 17922 | and update the global target options space. */ |
5a2c8331 KT |
17923 | |
17924 | bool | |
ab93e9b7 | 17925 | aarch64_process_target_attr (tree args) |
5a2c8331 KT |
17926 | { |
17927 | if (TREE_CODE (args) == TREE_LIST) | |
17928 | { | |
17929 | do | |
17930 | { | |
17931 | tree head = TREE_VALUE (args); | |
17932 | if (head) | |
17933 | { | |
ab93e9b7 | 17934 | if (!aarch64_process_target_attr (head)) |
5a2c8331 KT |
17935 | return false; |
17936 | } | |
17937 | args = TREE_CHAIN (args); | |
17938 | } while (args); | |
17939 | ||
17940 | return true; | |
17941 | } | |
3b6cb9e3 ML |
17942 | |
17943 | if (TREE_CODE (args) != STRING_CST) | |
17944 | { | |
17945 | error ("attribute %<target%> argument not a string"); | |
17946 | return false; | |
17947 | } | |
5a2c8331 KT |
17948 | |
17949 | size_t len = strlen (TREE_STRING_POINTER (args)); | |
17950 | char *str_to_check = (char *) alloca (len + 1); | |
17951 | strcpy (str_to_check, TREE_STRING_POINTER (args)); | |
17952 | ||
17953 | if (len == 0) | |
17954 | { | |
ab93e9b7 | 17955 | error ("malformed %<target()%> pragma or attribute"); |
5a2c8331 KT |
17956 | return false; |
17957 | } | |
17958 | ||
17959 | /* Used to catch empty spaces between commas i.e. | |
17960 | attribute ((target ("attr1,,attr2"))). */ | |
17961 | unsigned int num_commas = num_occurences_in_str (',', str_to_check); | |
17962 | ||
17963 | /* Handle multiple target attributes separated by ','. */ | |
7185a4eb | 17964 | char *token = strtok_r (str_to_check, ",", &str_to_check); |
5a2c8331 KT |
17965 | |
17966 | unsigned int num_attrs = 0; | |
17967 | while (token) | |
17968 | { | |
17969 | num_attrs++; | |
ab93e9b7 | 17970 | if (!aarch64_process_one_target_attr (token)) |
5a2c8331 | 17971 | { |
145be5ef PK |
17972 | /* Check if token is possibly an arch extension without |
17973 | leading '+'. */ | |
17974 | uint64_t isa_temp = 0; | |
17975 | auto with_plus = std::string ("+") + token; | |
17976 | enum aarch64_parse_opt_result ext_res | |
17977 | = aarch64_parse_extension (with_plus.c_str (), &isa_temp, nullptr); | |
17978 | ||
17979 | if (ext_res == AARCH64_PARSE_OK) | |
17980 | error ("arch extension %<%s%> should be prefixed by %<+%>", | |
17981 | token); | |
17982 | else | |
17983 | error ("pragma or attribute %<target(\"%s\")%> is not valid", token); | |
5a2c8331 KT |
17984 | return false; |
17985 | } | |
17986 | ||
7185a4eb | 17987 | token = strtok_r (NULL, ",", &str_to_check); |
5a2c8331 KT |
17988 | } |
17989 | ||
17990 | if (num_attrs != num_commas + 1) | |
17991 | { | |
ab93e9b7 | 17992 | error ("malformed %<target(\"%s\")%> pragma or attribute", TREE_STRING_POINTER (args)); |
5a2c8331 KT |
17993 | return false; |
17994 | } | |
17995 | ||
17996 | return true; | |
17997 | } | |
17998 | ||
17999 | /* Implement TARGET_OPTION_VALID_ATTRIBUTE_P. This is used to | |
18000 | process attribute ((target ("..."))). */ | |
18001 | ||
18002 | static bool | |
18003 | aarch64_option_valid_attribute_p (tree fndecl, tree, tree args, int) | |
18004 | { | |
18005 | struct cl_target_option cur_target; | |
18006 | bool ret; | |
18007 | tree old_optimize; | |
18008 | tree new_target, new_optimize; | |
18009 | tree existing_target = DECL_FUNCTION_SPECIFIC_TARGET (fndecl); | |
91d0e8de KT |
18010 | |
18011 | /* If what we're processing is the current pragma string then the | |
18012 | target option node is already stored in target_option_current_node | |
18013 | by aarch64_pragma_target_parse in aarch64-c.c. Use that to avoid | |
18014 | having to re-parse the string. This is especially useful to keep | |
18015 | arm_neon.h compile times down since that header contains a lot | |
18016 | of intrinsics enclosed in pragmas. */ | |
18017 | if (!existing_target && args == current_target_pragma) | |
18018 | { | |
18019 | DECL_FUNCTION_SPECIFIC_TARGET (fndecl) = target_option_current_node; | |
18020 | return true; | |
18021 | } | |
5a2c8331 KT |
18022 | tree func_optimize = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (fndecl); |
18023 | ||
ba948b37 JJ |
18024 | old_optimize |
18025 | = build_optimization_node (&global_options, &global_options_set); | |
5a2c8331 KT |
18026 | func_optimize = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (fndecl); |
18027 | ||
18028 | /* If the function changed the optimization levels as well as setting | |
18029 | target options, start with the optimizations specified. */ | |
18030 | if (func_optimize && func_optimize != old_optimize) | |
ba948b37 | 18031 | cl_optimization_restore (&global_options, &global_options_set, |
5a2c8331 KT |
18032 | TREE_OPTIMIZATION (func_optimize)); |
18033 | ||
18034 | /* Save the current target options to restore at the end. */ | |
ba948b37 | 18035 | cl_target_option_save (&cur_target, &global_options, &global_options_set); |
5a2c8331 KT |
18036 | |
18037 | /* If fndecl already has some target attributes applied to it, unpack | |
18038 | them so that we add this attribute on top of them, rather than | |
18039 | overwriting them. */ | |
18040 | if (existing_target) | |
18041 | { | |
18042 | struct cl_target_option *existing_options | |
18043 | = TREE_TARGET_OPTION (existing_target); | |
18044 | ||
18045 | if (existing_options) | |
ba948b37 JJ |
18046 | cl_target_option_restore (&global_options, &global_options_set, |
18047 | existing_options); | |
5a2c8331 KT |
18048 | } |
18049 | else | |
ba948b37 JJ |
18050 | cl_target_option_restore (&global_options, &global_options_set, |
18051 | TREE_TARGET_OPTION (target_option_current_node)); | |
5a2c8331 | 18052 | |
ab93e9b7 | 18053 | ret = aarch64_process_target_attr (args); |
5a2c8331 KT |
18054 | |
18055 | /* Set up any additional state. */ | |
18056 | if (ret) | |
18057 | { | |
18058 | aarch64_override_options_internal (&global_options); | |
e95a988a KT |
18059 | /* Initialize SIMD builtins if we haven't already. |
18060 | Set current_target_pragma to NULL for the duration so that | |
18061 | the builtin initialization code doesn't try to tag the functions | |
18062 | being built with the attributes specified by any current pragma, thus | |
18063 | going into an infinite recursion. */ | |
18064 | if (TARGET_SIMD) | |
18065 | { | |
18066 | tree saved_current_target_pragma = current_target_pragma; | |
18067 | current_target_pragma = NULL; | |
18068 | aarch64_init_simd_builtins (); | |
18069 | current_target_pragma = saved_current_target_pragma; | |
18070 | } | |
ba948b37 JJ |
18071 | new_target = build_target_option_node (&global_options, |
18072 | &global_options_set); | |
5a2c8331 KT |
18073 | } |
18074 | else | |
18075 | new_target = NULL; | |
18076 | ||
ba948b37 JJ |
18077 | new_optimize = build_optimization_node (&global_options, |
18078 | &global_options_set); | |
5a2c8331 KT |
18079 | |
18080 | if (fndecl && ret) | |
18081 | { | |
18082 | DECL_FUNCTION_SPECIFIC_TARGET (fndecl) = new_target; | |
18083 | ||
18084 | if (old_optimize != new_optimize) | |
18085 | DECL_FUNCTION_SPECIFIC_OPTIMIZATION (fndecl) = new_optimize; | |
18086 | } | |
18087 | ||
ba948b37 | 18088 | cl_target_option_restore (&global_options, &global_options_set, &cur_target); |
5a2c8331 KT |
18089 | |
18090 | if (old_optimize != new_optimize) | |
ba948b37 | 18091 | cl_optimization_restore (&global_options, &global_options_set, |
5a2c8331 KT |
18092 | TREE_OPTIMIZATION (old_optimize)); |
18093 | return ret; | |
18094 | } | |
18095 | ||
1fd8d40c KT |
18096 | /* Helper for aarch64_can_inline_p. In the case where CALLER and CALLEE are |
18097 | tri-bool options (yes, no, don't care) and the default value is | |
18098 | DEF, determine whether to reject inlining. */ | |
18099 | ||
18100 | static bool | |
18101 | aarch64_tribools_ok_for_inlining_p (int caller, int callee, | |
18102 | int dont_care, int def) | |
18103 | { | |
18104 | /* If the callee doesn't care, always allow inlining. */ | |
18105 | if (callee == dont_care) | |
18106 | return true; | |
18107 | ||
18108 | /* If the caller doesn't care, always allow inlining. */ | |
18109 | if (caller == dont_care) | |
18110 | return true; | |
18111 | ||
18112 | /* Otherwise, allow inlining if either the callee and caller values | |
18113 | agree, or if the callee is using the default value. */ | |
18114 | return (callee == caller || callee == def); | |
18115 | } | |
18116 | ||
18117 | /* Implement TARGET_CAN_INLINE_P. Decide whether it is valid | |
18118 | to inline CALLEE into CALLER based on target-specific info. | |
18119 | Make sure that the caller and callee have compatible architectural | |
18120 | features. Then go through the other possible target attributes | |
18121 | and see if they can block inlining. Try not to reject always_inline | |
18122 | callees unless they are incompatible architecturally. */ | |
18123 | ||
18124 | static bool | |
18125 | aarch64_can_inline_p (tree caller, tree callee) | |
18126 | { | |
18127 | tree caller_tree = DECL_FUNCTION_SPECIFIC_TARGET (caller); | |
18128 | tree callee_tree = DECL_FUNCTION_SPECIFIC_TARGET (callee); | |
18129 | ||
1fd8d40c KT |
18130 | struct cl_target_option *caller_opts |
18131 | = TREE_TARGET_OPTION (caller_tree ? caller_tree | |
18132 | : target_option_default_node); | |
18133 | ||
675d044c SD |
18134 | struct cl_target_option *callee_opts |
18135 | = TREE_TARGET_OPTION (callee_tree ? callee_tree | |
18136 | : target_option_default_node); | |
1fd8d40c KT |
18137 | |
18138 | /* Callee's ISA flags should be a subset of the caller's. */ | |
18139 | if ((caller_opts->x_aarch64_isa_flags & callee_opts->x_aarch64_isa_flags) | |
18140 | != callee_opts->x_aarch64_isa_flags) | |
18141 | return false; | |
18142 | ||
18143 | /* Allow non-strict aligned functions inlining into strict | |
18144 | aligned ones. */ | |
18145 | if ((TARGET_STRICT_ALIGN_P (caller_opts->x_target_flags) | |
18146 | != TARGET_STRICT_ALIGN_P (callee_opts->x_target_flags)) | |
18147 | && !(!TARGET_STRICT_ALIGN_P (callee_opts->x_target_flags) | |
18148 | && TARGET_STRICT_ALIGN_P (caller_opts->x_target_flags))) | |
18149 | return false; | |
18150 | ||
18151 | bool always_inline = lookup_attribute ("always_inline", | |
18152 | DECL_ATTRIBUTES (callee)); | |
18153 | ||
18154 | /* If the architectural features match up and the callee is always_inline | |
18155 | then the other attributes don't matter. */ | |
18156 | if (always_inline) | |
18157 | return true; | |
18158 | ||
18159 | if (caller_opts->x_aarch64_cmodel_var | |
18160 | != callee_opts->x_aarch64_cmodel_var) | |
18161 | return false; | |
18162 | ||
18163 | if (caller_opts->x_aarch64_tls_dialect | |
18164 | != callee_opts->x_aarch64_tls_dialect) | |
18165 | return false; | |
18166 | ||
18167 | /* Honour explicit requests to workaround errata. */ | |
18168 | if (!aarch64_tribools_ok_for_inlining_p ( | |
18169 | caller_opts->x_aarch64_fix_a53_err835769, | |
18170 | callee_opts->x_aarch64_fix_a53_err835769, | |
18171 | 2, TARGET_FIX_ERR_A53_835769_DEFAULT)) | |
18172 | return false; | |
18173 | ||
48bb1a55 CL |
18174 | if (!aarch64_tribools_ok_for_inlining_p ( |
18175 | caller_opts->x_aarch64_fix_a53_err843419, | |
18176 | callee_opts->x_aarch64_fix_a53_err843419, | |
18177 | 2, TARGET_FIX_ERR_A53_843419)) | |
18178 | return false; | |
18179 | ||
1fd8d40c KT |
18180 | /* If the user explicitly specified -momit-leaf-frame-pointer for the |
18181 | caller and calle and they don't match up, reject inlining. */ | |
18182 | if (!aarch64_tribools_ok_for_inlining_p ( | |
18183 | caller_opts->x_flag_omit_leaf_frame_pointer, | |
18184 | callee_opts->x_flag_omit_leaf_frame_pointer, | |
18185 | 2, 1)) | |
18186 | return false; | |
18187 | ||
18188 | /* If the callee has specific tuning overrides, respect them. */ | |
18189 | if (callee_opts->x_aarch64_override_tune_string != NULL | |
18190 | && caller_opts->x_aarch64_override_tune_string == NULL) | |
18191 | return false; | |
18192 | ||
18193 | /* If the user specified tuning override strings for the | |
18194 | caller and callee and they don't match up, reject inlining. | |
18195 | We just do a string compare here, we don't analyze the meaning | |
18196 | of the string, as it would be too costly for little gain. */ | |
18197 | if (callee_opts->x_aarch64_override_tune_string | |
18198 | && caller_opts->x_aarch64_override_tune_string | |
18199 | && (strcmp (callee_opts->x_aarch64_override_tune_string, | |
18200 | caller_opts->x_aarch64_override_tune_string) != 0)) | |
18201 | return false; | |
18202 | ||
18203 | return true; | |
18204 | } | |
18205 | ||
bb6ce448 RS |
18206 | /* Return the ID of the TLDESC ABI, initializing the descriptor if hasn't |
18207 | been already. */ | |
18208 | ||
18209 | unsigned int | |
18210 | aarch64_tlsdesc_abi_id () | |
18211 | { | |
18212 | predefined_function_abi &tlsdesc_abi = function_abis[ARM_PCS_TLSDESC]; | |
18213 | if (!tlsdesc_abi.initialized_p ()) | |
18214 | { | |
18215 | HARD_REG_SET full_reg_clobbers; | |
18216 | CLEAR_HARD_REG_SET (full_reg_clobbers); | |
18217 | SET_HARD_REG_BIT (full_reg_clobbers, R0_REGNUM); | |
18218 | SET_HARD_REG_BIT (full_reg_clobbers, CC_REGNUM); | |
18219 | for (int regno = P0_REGNUM; regno <= P15_REGNUM; ++regno) | |
18220 | SET_HARD_REG_BIT (full_reg_clobbers, regno); | |
18221 | tlsdesc_abi.initialize (ARM_PCS_TLSDESC, full_reg_clobbers); | |
18222 | } | |
18223 | return tlsdesc_abi.id (); | |
18224 | } | |
18225 | ||
43e9d192 IB |
18226 | /* Return true if SYMBOL_REF X binds locally. */ |
18227 | ||
18228 | static bool | |
18229 | aarch64_symbol_binds_local_p (const_rtx x) | |
18230 | { | |
18231 | return (SYMBOL_REF_DECL (x) | |
18232 | ? targetm.binds_local_p (SYMBOL_REF_DECL (x)) | |
18233 | : SYMBOL_REF_LOCAL_P (x)); | |
18234 | } | |
18235 | ||
18236 | /* Return true if SYMBOL_REF X is thread local */ | |
18237 | static bool | |
18238 | aarch64_tls_symbol_p (rtx x) | |
18239 | { | |
18240 | if (! TARGET_HAVE_TLS) | |
18241 | return false; | |
18242 | ||
74b27d8e | 18243 | x = strip_salt (x); |
3793ecc1 | 18244 | if (!SYMBOL_REF_P (x)) |
43e9d192 IB |
18245 | return false; |
18246 | ||
18247 | return SYMBOL_REF_TLS_MODEL (x) != 0; | |
18248 | } | |
18249 | ||
18250 | /* Classify a TLS symbol into one of the TLS kinds. */ | |
18251 | enum aarch64_symbol_type | |
18252 | aarch64_classify_tls_symbol (rtx x) | |
18253 | { | |
18254 | enum tls_model tls_kind = tls_symbolic_operand_type (x); | |
18255 | ||
18256 | switch (tls_kind) | |
18257 | { | |
18258 | case TLS_MODEL_GLOBAL_DYNAMIC: | |
18259 | case TLS_MODEL_LOCAL_DYNAMIC: | |
18260 | return TARGET_TLS_DESC ? SYMBOL_SMALL_TLSDESC : SYMBOL_SMALL_TLSGD; | |
18261 | ||
18262 | case TLS_MODEL_INITIAL_EXEC: | |
5ae7caad JW |
18263 | switch (aarch64_cmodel) |
18264 | { | |
18265 | case AARCH64_CMODEL_TINY: | |
18266 | case AARCH64_CMODEL_TINY_PIC: | |
18267 | return SYMBOL_TINY_TLSIE; | |
18268 | default: | |
79496620 | 18269 | return SYMBOL_SMALL_TLSIE; |
5ae7caad | 18270 | } |
43e9d192 IB |
18271 | |
18272 | case TLS_MODEL_LOCAL_EXEC: | |
cbf5629e JW |
18273 | if (aarch64_tls_size == 12) |
18274 | return SYMBOL_TLSLE12; | |
18275 | else if (aarch64_tls_size == 24) | |
18276 | return SYMBOL_TLSLE24; | |
18277 | else if (aarch64_tls_size == 32) | |
18278 | return SYMBOL_TLSLE32; | |
18279 | else if (aarch64_tls_size == 48) | |
18280 | return SYMBOL_TLSLE48; | |
18281 | else | |
18282 | gcc_unreachable (); | |
43e9d192 IB |
18283 | |
18284 | case TLS_MODEL_EMULATED: | |
18285 | case TLS_MODEL_NONE: | |
18286 | return SYMBOL_FORCE_TO_MEM; | |
18287 | ||
18288 | default: | |
18289 | gcc_unreachable (); | |
18290 | } | |
18291 | } | |
18292 | ||
43cacb12 RS |
18293 | /* Return the correct method for accessing X + OFFSET, where X is either |
18294 | a SYMBOL_REF or LABEL_REF. */ | |
17f4d4bf | 18295 | |
43e9d192 | 18296 | enum aarch64_symbol_type |
43cacb12 | 18297 | aarch64_classify_symbol (rtx x, HOST_WIDE_INT offset) |
43e9d192 | 18298 | { |
74b27d8e RS |
18299 | x = strip_salt (x); |
18300 | ||
3793ecc1 | 18301 | if (LABEL_REF_P (x)) |
43e9d192 IB |
18302 | { |
18303 | switch (aarch64_cmodel) | |
18304 | { | |
18305 | case AARCH64_CMODEL_LARGE: | |
18306 | return SYMBOL_FORCE_TO_MEM; | |
18307 | ||
18308 | case AARCH64_CMODEL_TINY_PIC: | |
18309 | case AARCH64_CMODEL_TINY: | |
a5350ddc CSS |
18310 | return SYMBOL_TINY_ABSOLUTE; |
18311 | ||
1b1e81f8 | 18312 | case AARCH64_CMODEL_SMALL_SPIC: |
43e9d192 IB |
18313 | case AARCH64_CMODEL_SMALL_PIC: |
18314 | case AARCH64_CMODEL_SMALL: | |
18315 | return SYMBOL_SMALL_ABSOLUTE; | |
18316 | ||
18317 | default: | |
18318 | gcc_unreachable (); | |
18319 | } | |
18320 | } | |
18321 | ||
3793ecc1 | 18322 | if (SYMBOL_REF_P (x)) |
43e9d192 | 18323 | { |
43e9d192 IB |
18324 | if (aarch64_tls_symbol_p (x)) |
18325 | return aarch64_classify_tls_symbol (x); | |
18326 | ||
17f4d4bf CSS |
18327 | switch (aarch64_cmodel) |
18328 | { | |
fb0746f3 | 18329 | case AARCH64_CMODEL_TINY_PIC: |
17f4d4bf | 18330 | case AARCH64_CMODEL_TINY: |
fb0746f3 WD |
18331 | /* With -fPIC non-local symbols use the GOT. For orthogonality |
18332 | always use the GOT for extern weak symbols. */ | |
18333 | if ((flag_pic || SYMBOL_REF_WEAK (x)) | |
18334 | && !aarch64_symbol_binds_local_p (x)) | |
18335 | return SYMBOL_TINY_GOT; | |
18336 | ||
15f6e0da | 18337 | /* When we retrieve symbol + offset address, we have to make sure |
f8b756b7 TB |
18338 | the offset does not cause overflow of the final address. But |
18339 | we have no way of knowing the address of symbol at compile time | |
18340 | so we can't accurately say if the distance between the PC and | |
7d3b27ff WD |
18341 | symbol + offset is outside the addressible range of +/-1MB in the |
18342 | TINY code model. So we limit the maximum offset to +/-64KB and | |
18343 | assume the offset to the symbol is not larger than +/-(1MB - 64KB). | |
fb0746f3 | 18344 | If offset_within_block_p is true we allow larger offsets. */ |
7d3b27ff WD |
18345 | if (!(IN_RANGE (offset, -0x10000, 0x10000) |
18346 | || offset_within_block_p (x, offset))) | |
18347 | return SYMBOL_FORCE_TO_MEM; | |
18348 | ||
a5350ddc CSS |
18349 | return SYMBOL_TINY_ABSOLUTE; |
18350 | ||
fb0746f3 WD |
18351 | |
18352 | case AARCH64_CMODEL_SMALL_SPIC: | |
18353 | case AARCH64_CMODEL_SMALL_PIC: | |
17f4d4bf | 18354 | case AARCH64_CMODEL_SMALL: |
fb0746f3 WD |
18355 | if ((flag_pic || SYMBOL_REF_WEAK (x)) |
18356 | && !aarch64_symbol_binds_local_p (x)) | |
18357 | return aarch64_cmodel == AARCH64_CMODEL_SMALL_SPIC | |
18358 | ? SYMBOL_SMALL_GOT_28K : SYMBOL_SMALL_GOT_4G; | |
18359 | ||
f8b756b7 | 18360 | /* Same reasoning as the tiny code model, but the offset cap here is |
7d3b27ff | 18361 | 1MB, allowing +/-3.9GB for the offset to the symbol. */ |
7d3b27ff WD |
18362 | if (!(IN_RANGE (offset, -0x100000, 0x100000) |
18363 | || offset_within_block_p (x, offset))) | |
18364 | return SYMBOL_FORCE_TO_MEM; | |
18365 | ||
17f4d4bf | 18366 | return SYMBOL_SMALL_ABSOLUTE; |
43e9d192 | 18367 | |
9ee6540a WD |
18368 | case AARCH64_CMODEL_LARGE: |
18369 | /* This is alright even in PIC code as the constant | |
18370 | pool reference is always PC relative and within | |
18371 | the same translation unit. */ | |
d47d34bb | 18372 | if (!aarch64_pcrelative_literal_loads && CONSTANT_POOL_ADDRESS_P (x)) |
9ee6540a WD |
18373 | return SYMBOL_SMALL_ABSOLUTE; |
18374 | else | |
18375 | return SYMBOL_FORCE_TO_MEM; | |
18376 | ||
17f4d4bf CSS |
18377 | default: |
18378 | gcc_unreachable (); | |
18379 | } | |
43e9d192 | 18380 | } |
17f4d4bf | 18381 | |
43e9d192 IB |
18382 | /* By default push everything into the constant pool. */ |
18383 | return SYMBOL_FORCE_TO_MEM; | |
18384 | } | |
18385 | ||
43e9d192 IB |
18386 | bool |
18387 | aarch64_constant_address_p (rtx x) | |
18388 | { | |
18389 | return (CONSTANT_P (x) && memory_address_p (DImode, x)); | |
18390 | } | |
18391 | ||
18392 | bool | |
18393 | aarch64_legitimate_pic_operand_p (rtx x) | |
18394 | { | |
74b27d8e RS |
18395 | poly_int64 offset; |
18396 | x = strip_offset_and_salt (x, &offset); | |
3793ecc1 | 18397 | if (SYMBOL_REF_P (x)) |
74b27d8e | 18398 | return false; |
43e9d192 IB |
18399 | |
18400 | return true; | |
18401 | } | |
18402 | ||
26895c21 WD |
18403 | /* Implement TARGET_LEGITIMATE_CONSTANT_P hook. Return true for constants |
18404 | that should be rematerialized rather than spilled. */ | |
3520f7cc | 18405 | |
43e9d192 | 18406 | static bool |
ef4bddc2 | 18407 | aarch64_legitimate_constant_p (machine_mode mode, rtx x) |
43e9d192 | 18408 | { |
26895c21 | 18409 | /* Support CSE and rematerialization of common constants. */ |
c0bb5bc5 | 18410 | if (CONST_INT_P (x) |
1b5f74e8 | 18411 | || (CONST_DOUBLE_P (x) && GET_MODE_CLASS (mode) == MODE_FLOAT)) |
26895c21 WD |
18412 | return true; |
18413 | ||
1b5f74e8 RS |
18414 | /* Only accept variable-length vector constants if they can be |
18415 | handled directly. | |
18416 | ||
18417 | ??? It would be possible (but complex) to handle rematerialization | |
18418 | of other constants via secondary reloads. */ | |
18419 | if (!GET_MODE_SIZE (mode).is_constant ()) | |
18420 | return aarch64_simd_valid_immediate (x, NULL); | |
18421 | ||
18422 | /* Otherwise, accept any CONST_VECTOR that, if all else fails, can at | |
18423 | least be forced to memory and loaded from there. */ | |
568b9c0e | 18424 | if (CONST_VECTOR_P (x)) |
1b5f74e8 RS |
18425 | return !targetm.cannot_force_const_mem (mode, x); |
18426 | ||
43cacb12 RS |
18427 | /* Do not allow vector struct mode constants for Advanced SIMD. |
18428 | We could support 0 and -1 easily, but they need support in | |
18429 | aarch64-simd.md. */ | |
18430 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
18431 | if (vec_flags == (VEC_ADVSIMD | VEC_STRUCT)) | |
43e9d192 IB |
18432 | return false; |
18433 | ||
509bb9b6 RS |
18434 | if (GET_CODE (x) == HIGH) |
18435 | x = XEXP (x, 0); | |
18436 | ||
43cacb12 RS |
18437 | /* Accept polynomial constants that can be calculated by using the |
18438 | destination of a move as the sole temporary. Constants that | |
18439 | require a second temporary cannot be rematerialized (they can't be | |
18440 | forced to memory and also aren't legitimate constants). */ | |
18441 | poly_int64 offset; | |
18442 | if (poly_int_rtx_p (x, &offset)) | |
18443 | return aarch64_offset_temporaries (false, offset) <= 1; | |
18444 | ||
18445 | /* If an offset is being added to something else, we need to allow the | |
18446 | base to be moved into the destination register, meaning that there | |
18447 | are no free temporaries for the offset. */ | |
74b27d8e | 18448 | x = strip_offset_and_salt (x, &offset); |
43cacb12 RS |
18449 | if (!offset.is_constant () && aarch64_offset_temporaries (true, offset) > 0) |
18450 | return false; | |
26895c21 | 18451 | |
43cacb12 RS |
18452 | /* Do not allow const (plus (anchor_symbol, const_int)). */ |
18453 | if (maybe_ne (offset, 0) && SYMBOL_REF_P (x) && SYMBOL_REF_ANCHOR_P (x)) | |
18454 | return false; | |
26895c21 | 18455 | |
f28e54bd WD |
18456 | /* Treat symbols as constants. Avoid TLS symbols as they are complex, |
18457 | so spilling them is better than rematerialization. */ | |
18458 | if (SYMBOL_REF_P (x) && !SYMBOL_REF_TLS_MODEL (x)) | |
18459 | return true; | |
18460 | ||
26895c21 | 18461 | /* Label references are always constant. */ |
3793ecc1 | 18462 | if (LABEL_REF_P (x)) |
26895c21 WD |
18463 | return true; |
18464 | ||
18465 | return false; | |
43e9d192 IB |
18466 | } |
18467 | ||
a5bc806c | 18468 | rtx |
43e9d192 IB |
18469 | aarch64_load_tp (rtx target) |
18470 | { | |
18471 | if (!target | |
18472 | || GET_MODE (target) != Pmode | |
18473 | || !register_operand (target, Pmode)) | |
18474 | target = gen_reg_rtx (Pmode); | |
18475 | ||
18476 | /* Can return in any reg. */ | |
18477 | emit_insn (gen_aarch64_load_tp_hard (target)); | |
18478 | return target; | |
18479 | } | |
18480 | ||
43e9d192 IB |
18481 | /* On AAPCS systems, this is the "struct __va_list". */ |
18482 | static GTY(()) tree va_list_type; | |
18483 | ||
18484 | /* Implement TARGET_BUILD_BUILTIN_VA_LIST. | |
18485 | Return the type to use as __builtin_va_list. | |
18486 | ||
18487 | AAPCS64 \S 7.1.4 requires that va_list be a typedef for a type defined as: | |
18488 | ||
18489 | struct __va_list | |
18490 | { | |
18491 | void *__stack; | |
18492 | void *__gr_top; | |
18493 | void *__vr_top; | |
18494 | int __gr_offs; | |
18495 | int __vr_offs; | |
18496 | }; */ | |
18497 | ||
18498 | static tree | |
18499 | aarch64_build_builtin_va_list (void) | |
18500 | { | |
18501 | tree va_list_name; | |
18502 | tree f_stack, f_grtop, f_vrtop, f_groff, f_vroff; | |
18503 | ||
18504 | /* Create the type. */ | |
18505 | va_list_type = lang_hooks.types.make_type (RECORD_TYPE); | |
18506 | /* Give it the required name. */ | |
18507 | va_list_name = build_decl (BUILTINS_LOCATION, | |
18508 | TYPE_DECL, | |
18509 | get_identifier ("__va_list"), | |
18510 | va_list_type); | |
18511 | DECL_ARTIFICIAL (va_list_name) = 1; | |
18512 | TYPE_NAME (va_list_type) = va_list_name; | |
665c56c6 | 18513 | TYPE_STUB_DECL (va_list_type) = va_list_name; |
43e9d192 IB |
18514 | |
18515 | /* Create the fields. */ | |
18516 | f_stack = build_decl (BUILTINS_LOCATION, | |
18517 | FIELD_DECL, get_identifier ("__stack"), | |
18518 | ptr_type_node); | |
18519 | f_grtop = build_decl (BUILTINS_LOCATION, | |
18520 | FIELD_DECL, get_identifier ("__gr_top"), | |
18521 | ptr_type_node); | |
18522 | f_vrtop = build_decl (BUILTINS_LOCATION, | |
18523 | FIELD_DECL, get_identifier ("__vr_top"), | |
18524 | ptr_type_node); | |
18525 | f_groff = build_decl (BUILTINS_LOCATION, | |
18526 | FIELD_DECL, get_identifier ("__gr_offs"), | |
18527 | integer_type_node); | |
18528 | f_vroff = build_decl (BUILTINS_LOCATION, | |
18529 | FIELD_DECL, get_identifier ("__vr_offs"), | |
18530 | integer_type_node); | |
18531 | ||
88e3bdd1 | 18532 | /* Tell tree-stdarg pass about our internal offset fields. |
3fd6b9cc JW |
18533 | NOTE: va_list_gpr/fpr_counter_field are only used for tree comparision |
18534 | purpose to identify whether the code is updating va_list internal | |
18535 | offset fields through irregular way. */ | |
18536 | va_list_gpr_counter_field = f_groff; | |
18537 | va_list_fpr_counter_field = f_vroff; | |
18538 | ||
43e9d192 IB |
18539 | DECL_ARTIFICIAL (f_stack) = 1; |
18540 | DECL_ARTIFICIAL (f_grtop) = 1; | |
18541 | DECL_ARTIFICIAL (f_vrtop) = 1; | |
18542 | DECL_ARTIFICIAL (f_groff) = 1; | |
18543 | DECL_ARTIFICIAL (f_vroff) = 1; | |
18544 | ||
18545 | DECL_FIELD_CONTEXT (f_stack) = va_list_type; | |
18546 | DECL_FIELD_CONTEXT (f_grtop) = va_list_type; | |
18547 | DECL_FIELD_CONTEXT (f_vrtop) = va_list_type; | |
18548 | DECL_FIELD_CONTEXT (f_groff) = va_list_type; | |
18549 | DECL_FIELD_CONTEXT (f_vroff) = va_list_type; | |
18550 | ||
18551 | TYPE_FIELDS (va_list_type) = f_stack; | |
18552 | DECL_CHAIN (f_stack) = f_grtop; | |
18553 | DECL_CHAIN (f_grtop) = f_vrtop; | |
18554 | DECL_CHAIN (f_vrtop) = f_groff; | |
18555 | DECL_CHAIN (f_groff) = f_vroff; | |
18556 | ||
18557 | /* Compute its layout. */ | |
18558 | layout_type (va_list_type); | |
18559 | ||
18560 | return va_list_type; | |
18561 | } | |
18562 | ||
18563 | /* Implement TARGET_EXPAND_BUILTIN_VA_START. */ | |
18564 | static void | |
18565 | aarch64_expand_builtin_va_start (tree valist, rtx nextarg ATTRIBUTE_UNUSED) | |
18566 | { | |
18567 | const CUMULATIVE_ARGS *cum; | |
18568 | tree f_stack, f_grtop, f_vrtop, f_groff, f_vroff; | |
18569 | tree stack, grtop, vrtop, groff, vroff; | |
18570 | tree t; | |
88e3bdd1 JW |
18571 | int gr_save_area_size = cfun->va_list_gpr_size; |
18572 | int vr_save_area_size = cfun->va_list_fpr_size; | |
43e9d192 IB |
18573 | int vr_offset; |
18574 | ||
18575 | cum = &crtl->args.info; | |
88e3bdd1 JW |
18576 | if (cfun->va_list_gpr_size) |
18577 | gr_save_area_size = MIN ((NUM_ARG_REGS - cum->aapcs_ncrn) * UNITS_PER_WORD, | |
18578 | cfun->va_list_gpr_size); | |
18579 | if (cfun->va_list_fpr_size) | |
18580 | vr_save_area_size = MIN ((NUM_FP_ARG_REGS - cum->aapcs_nvrn) | |
18581 | * UNITS_PER_VREG, cfun->va_list_fpr_size); | |
43e9d192 | 18582 | |
d5726973 | 18583 | if (!TARGET_FLOAT) |
43e9d192 | 18584 | { |
261fb553 | 18585 | gcc_assert (cum->aapcs_nvrn == 0); |
43e9d192 IB |
18586 | vr_save_area_size = 0; |
18587 | } | |
18588 | ||
18589 | f_stack = TYPE_FIELDS (va_list_type_node); | |
18590 | f_grtop = DECL_CHAIN (f_stack); | |
18591 | f_vrtop = DECL_CHAIN (f_grtop); | |
18592 | f_groff = DECL_CHAIN (f_vrtop); | |
18593 | f_vroff = DECL_CHAIN (f_groff); | |
18594 | ||
18595 | stack = build3 (COMPONENT_REF, TREE_TYPE (f_stack), valist, f_stack, | |
18596 | NULL_TREE); | |
18597 | grtop = build3 (COMPONENT_REF, TREE_TYPE (f_grtop), valist, f_grtop, | |
18598 | NULL_TREE); | |
18599 | vrtop = build3 (COMPONENT_REF, TREE_TYPE (f_vrtop), valist, f_vrtop, | |
18600 | NULL_TREE); | |
18601 | groff = build3 (COMPONENT_REF, TREE_TYPE (f_groff), valist, f_groff, | |
18602 | NULL_TREE); | |
18603 | vroff = build3 (COMPONENT_REF, TREE_TYPE (f_vroff), valist, f_vroff, | |
18604 | NULL_TREE); | |
18605 | ||
18606 | /* Emit code to initialize STACK, which points to the next varargs stack | |
18607 | argument. CUM->AAPCS_STACK_SIZE gives the number of stack words used | |
18608 | by named arguments. STACK is 8-byte aligned. */ | |
18609 | t = make_tree (TREE_TYPE (stack), virtual_incoming_args_rtx); | |
18610 | if (cum->aapcs_stack_size > 0) | |
18611 | t = fold_build_pointer_plus_hwi (t, cum->aapcs_stack_size * UNITS_PER_WORD); | |
18612 | t = build2 (MODIFY_EXPR, TREE_TYPE (stack), stack, t); | |
18613 | expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); | |
18614 | ||
18615 | /* Emit code to initialize GRTOP, the top of the GR save area. | |
18616 | virtual_incoming_args_rtx should have been 16 byte aligned. */ | |
18617 | t = make_tree (TREE_TYPE (grtop), virtual_incoming_args_rtx); | |
18618 | t = build2 (MODIFY_EXPR, TREE_TYPE (grtop), grtop, t); | |
18619 | expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); | |
18620 | ||
18621 | /* Emit code to initialize VRTOP, the top of the VR save area. | |
18622 | This address is gr_save_area_bytes below GRTOP, rounded | |
18623 | down to the next 16-byte boundary. */ | |
18624 | t = make_tree (TREE_TYPE (vrtop), virtual_incoming_args_rtx); | |
4f59f9f2 UB |
18625 | vr_offset = ROUND_UP (gr_save_area_size, |
18626 | STACK_BOUNDARY / BITS_PER_UNIT); | |
43e9d192 IB |
18627 | |
18628 | if (vr_offset) | |
18629 | t = fold_build_pointer_plus_hwi (t, -vr_offset); | |
18630 | t = build2 (MODIFY_EXPR, TREE_TYPE (vrtop), vrtop, t); | |
18631 | expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); | |
18632 | ||
18633 | /* Emit code to initialize GROFF, the offset from GRTOP of the | |
18634 | next GPR argument. */ | |
18635 | t = build2 (MODIFY_EXPR, TREE_TYPE (groff), groff, | |
18636 | build_int_cst (TREE_TYPE (groff), -gr_save_area_size)); | |
18637 | expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); | |
18638 | ||
18639 | /* Likewise emit code to initialize VROFF, the offset from FTOP | |
18640 | of the next VR argument. */ | |
18641 | t = build2 (MODIFY_EXPR, TREE_TYPE (vroff), vroff, | |
18642 | build_int_cst (TREE_TYPE (vroff), -vr_save_area_size)); | |
18643 | expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); | |
18644 | } | |
18645 | ||
18646 | /* Implement TARGET_GIMPLIFY_VA_ARG_EXPR. */ | |
18647 | ||
18648 | static tree | |
18649 | aarch64_gimplify_va_arg_expr (tree valist, tree type, gimple_seq *pre_p, | |
18650 | gimple_seq *post_p ATTRIBUTE_UNUSED) | |
18651 | { | |
18652 | tree addr; | |
18653 | bool indirect_p; | |
18654 | bool is_ha; /* is HFA or HVA. */ | |
18655 | bool dw_align; /* double-word align. */ | |
ef4bddc2 | 18656 | machine_mode ag_mode = VOIDmode; |
43e9d192 | 18657 | int nregs; |
ef4bddc2 | 18658 | machine_mode mode; |
43e9d192 IB |
18659 | |
18660 | tree f_stack, f_grtop, f_vrtop, f_groff, f_vroff; | |
18661 | tree stack, f_top, f_off, off, arg, roundup, on_stack; | |
18662 | HOST_WIDE_INT size, rsize, adjust, align; | |
18663 | tree t, u, cond1, cond2; | |
18664 | ||
fde65a89 | 18665 | indirect_p = pass_va_arg_by_reference (type); |
43e9d192 IB |
18666 | if (indirect_p) |
18667 | type = build_pointer_type (type); | |
18668 | ||
18669 | mode = TYPE_MODE (type); | |
18670 | ||
18671 | f_stack = TYPE_FIELDS (va_list_type_node); | |
18672 | f_grtop = DECL_CHAIN (f_stack); | |
18673 | f_vrtop = DECL_CHAIN (f_grtop); | |
18674 | f_groff = DECL_CHAIN (f_vrtop); | |
18675 | f_vroff = DECL_CHAIN (f_groff); | |
18676 | ||
18677 | stack = build3 (COMPONENT_REF, TREE_TYPE (f_stack), unshare_expr (valist), | |
18678 | f_stack, NULL_TREE); | |
18679 | size = int_size_in_bytes (type); | |
c590597c | 18680 | |
49813aad | 18681 | unsigned int abi_break; |
c590597c RE |
18682 | align |
18683 | = aarch64_function_arg_alignment (mode, type, &abi_break) / BITS_PER_UNIT; | |
43e9d192 IB |
18684 | |
18685 | dw_align = false; | |
18686 | adjust = 0; | |
56fe3ca3 RS |
18687 | if (aarch64_vfp_is_call_or_return_candidate (mode, type, &ag_mode, &nregs, |
18688 | &is_ha, false)) | |
43e9d192 | 18689 | { |
6a70badb RS |
18690 | /* No frontends can create types with variable-sized modes, so we |
18691 | shouldn't be asked to pass or return them. */ | |
18692 | unsigned int ag_size = GET_MODE_SIZE (ag_mode).to_constant (); | |
18693 | ||
43e9d192 | 18694 | /* TYPE passed in fp/simd registers. */ |
d5726973 | 18695 | if (!TARGET_FLOAT) |
fc29dfc9 | 18696 | aarch64_err_no_fpadvsimd (mode); |
43e9d192 IB |
18697 | |
18698 | f_top = build3 (COMPONENT_REF, TREE_TYPE (f_vrtop), | |
18699 | unshare_expr (valist), f_vrtop, NULL_TREE); | |
18700 | f_off = build3 (COMPONENT_REF, TREE_TYPE (f_vroff), | |
18701 | unshare_expr (valist), f_vroff, NULL_TREE); | |
18702 | ||
18703 | rsize = nregs * UNITS_PER_VREG; | |
18704 | ||
18705 | if (is_ha) | |
18706 | { | |
6a70badb RS |
18707 | if (BYTES_BIG_ENDIAN && ag_size < UNITS_PER_VREG) |
18708 | adjust = UNITS_PER_VREG - ag_size; | |
43e9d192 | 18709 | } |
76b0cbf8 | 18710 | else if (BLOCK_REG_PADDING (mode, type, 1) == PAD_DOWNWARD |
43e9d192 IB |
18711 | && size < UNITS_PER_VREG) |
18712 | { | |
18713 | adjust = UNITS_PER_VREG - size; | |
18714 | } | |
18715 | } | |
18716 | else | |
18717 | { | |
18718 | /* TYPE passed in general registers. */ | |
18719 | f_top = build3 (COMPONENT_REF, TREE_TYPE (f_grtop), | |
18720 | unshare_expr (valist), f_grtop, NULL_TREE); | |
18721 | f_off = build3 (COMPONENT_REF, TREE_TYPE (f_groff), | |
18722 | unshare_expr (valist), f_groff, NULL_TREE); | |
4f59f9f2 | 18723 | rsize = ROUND_UP (size, UNITS_PER_WORD); |
43e9d192 IB |
18724 | nregs = rsize / UNITS_PER_WORD; |
18725 | ||
18726 | if (align > 8) | |
c590597c RE |
18727 | { |
18728 | if (abi_break && warn_psabi) | |
18729 | inform (input_location, "parameter passing for argument of type " | |
18730 | "%qT changed in GCC 9.1", type); | |
18731 | dw_align = true; | |
18732 | } | |
43e9d192 | 18733 | |
76b0cbf8 | 18734 | if (BLOCK_REG_PADDING (mode, type, 1) == PAD_DOWNWARD |
43e9d192 IB |
18735 | && size < UNITS_PER_WORD) |
18736 | { | |
18737 | adjust = UNITS_PER_WORD - size; | |
18738 | } | |
18739 | } | |
18740 | ||
18741 | /* Get a local temporary for the field value. */ | |
18742 | off = get_initialized_tmp_var (f_off, pre_p, NULL); | |
18743 | ||
18744 | /* Emit code to branch if off >= 0. */ | |
18745 | t = build2 (GE_EXPR, boolean_type_node, off, | |
18746 | build_int_cst (TREE_TYPE (off), 0)); | |
18747 | cond1 = build3 (COND_EXPR, ptr_type_node, t, NULL_TREE, NULL_TREE); | |
18748 | ||
18749 | if (dw_align) | |
18750 | { | |
18751 | /* Emit: offs = (offs + 15) & -16. */ | |
18752 | t = build2 (PLUS_EXPR, TREE_TYPE (off), off, | |
18753 | build_int_cst (TREE_TYPE (off), 15)); | |
18754 | t = build2 (BIT_AND_EXPR, TREE_TYPE (off), t, | |
18755 | build_int_cst (TREE_TYPE (off), -16)); | |
18756 | roundup = build2 (MODIFY_EXPR, TREE_TYPE (off), off, t); | |
18757 | } | |
18758 | else | |
18759 | roundup = NULL; | |
18760 | ||
18761 | /* Update ap.__[g|v]r_offs */ | |
18762 | t = build2 (PLUS_EXPR, TREE_TYPE (off), off, | |
18763 | build_int_cst (TREE_TYPE (off), rsize)); | |
18764 | t = build2 (MODIFY_EXPR, TREE_TYPE (f_off), unshare_expr (f_off), t); | |
18765 | ||
18766 | /* String up. */ | |
18767 | if (roundup) | |
18768 | t = build2 (COMPOUND_EXPR, TREE_TYPE (t), roundup, t); | |
18769 | ||
18770 | /* [cond2] if (ap.__[g|v]r_offs > 0) */ | |
18771 | u = build2 (GT_EXPR, boolean_type_node, unshare_expr (f_off), | |
18772 | build_int_cst (TREE_TYPE (f_off), 0)); | |
18773 | cond2 = build3 (COND_EXPR, ptr_type_node, u, NULL_TREE, NULL_TREE); | |
18774 | ||
18775 | /* String up: make sure the assignment happens before the use. */ | |
18776 | t = build2 (COMPOUND_EXPR, TREE_TYPE (cond2), t, cond2); | |
18777 | COND_EXPR_ELSE (cond1) = t; | |
18778 | ||
18779 | /* Prepare the trees handling the argument that is passed on the stack; | |
18780 | the top level node will store in ON_STACK. */ | |
18781 | arg = get_initialized_tmp_var (stack, pre_p, NULL); | |
18782 | if (align > 8) | |
18783 | { | |
18784 | /* if (alignof(type) > 8) (arg = arg + 15) & -16; */ | |
4bdc2738 | 18785 | t = fold_build_pointer_plus_hwi (arg, 15); |
43e9d192 IB |
18786 | t = build2 (BIT_AND_EXPR, TREE_TYPE (t), t, |
18787 | build_int_cst (TREE_TYPE (t), -16)); | |
43e9d192 IB |
18788 | roundup = build2 (MODIFY_EXPR, TREE_TYPE (arg), arg, t); |
18789 | } | |
18790 | else | |
18791 | roundup = NULL; | |
18792 | /* Advance ap.__stack */ | |
4bdc2738 | 18793 | t = fold_build_pointer_plus_hwi (arg, size + 7); |
43e9d192 IB |
18794 | t = build2 (BIT_AND_EXPR, TREE_TYPE (t), t, |
18795 | build_int_cst (TREE_TYPE (t), -8)); | |
43e9d192 IB |
18796 | t = build2 (MODIFY_EXPR, TREE_TYPE (stack), unshare_expr (stack), t); |
18797 | /* String up roundup and advance. */ | |
18798 | if (roundup) | |
18799 | t = build2 (COMPOUND_EXPR, TREE_TYPE (t), roundup, t); | |
18800 | /* String up with arg */ | |
18801 | on_stack = build2 (COMPOUND_EXPR, TREE_TYPE (arg), t, arg); | |
18802 | /* Big-endianness related address adjustment. */ | |
76b0cbf8 | 18803 | if (BLOCK_REG_PADDING (mode, type, 1) == PAD_DOWNWARD |
43e9d192 IB |
18804 | && size < UNITS_PER_WORD) |
18805 | { | |
18806 | t = build2 (POINTER_PLUS_EXPR, TREE_TYPE (arg), arg, | |
18807 | size_int (UNITS_PER_WORD - size)); | |
18808 | on_stack = build2 (COMPOUND_EXPR, TREE_TYPE (arg), on_stack, t); | |
18809 | } | |
18810 | ||
18811 | COND_EXPR_THEN (cond1) = unshare_expr (on_stack); | |
18812 | COND_EXPR_THEN (cond2) = unshare_expr (on_stack); | |
18813 | ||
18814 | /* Adjustment to OFFSET in the case of BIG_ENDIAN. */ | |
18815 | t = off; | |
18816 | if (adjust) | |
18817 | t = build2 (PREINCREMENT_EXPR, TREE_TYPE (off), off, | |
18818 | build_int_cst (TREE_TYPE (off), adjust)); | |
18819 | ||
18820 | t = fold_convert (sizetype, t); | |
18821 | t = build2 (POINTER_PLUS_EXPR, TREE_TYPE (f_top), f_top, t); | |
18822 | ||
18823 | if (is_ha) | |
18824 | { | |
18825 | /* type ha; // treat as "struct {ftype field[n];}" | |
18826 | ... [computing offs] | |
18827 | for (i = 0; i <nregs; ++i, offs += 16) | |
18828 | ha.field[i] = *((ftype *)(ap.__vr_top + offs)); | |
18829 | return ha; */ | |
18830 | int i; | |
18831 | tree tmp_ha, field_t, field_ptr_t; | |
18832 | ||
18833 | /* Declare a local variable. */ | |
18834 | tmp_ha = create_tmp_var_raw (type, "ha"); | |
18835 | gimple_add_tmp_var (tmp_ha); | |
18836 | ||
18837 | /* Establish the base type. */ | |
18838 | switch (ag_mode) | |
18839 | { | |
4e10a5a7 | 18840 | case E_SFmode: |
43e9d192 IB |
18841 | field_t = float_type_node; |
18842 | field_ptr_t = float_ptr_type_node; | |
18843 | break; | |
4e10a5a7 | 18844 | case E_DFmode: |
43e9d192 IB |
18845 | field_t = double_type_node; |
18846 | field_ptr_t = double_ptr_type_node; | |
18847 | break; | |
4e10a5a7 | 18848 | case E_TFmode: |
43e9d192 IB |
18849 | field_t = long_double_type_node; |
18850 | field_ptr_t = long_double_ptr_type_node; | |
18851 | break; | |
4e10a5a7 | 18852 | case E_HFmode: |
1b62ed4f JG |
18853 | field_t = aarch64_fp16_type_node; |
18854 | field_ptr_t = aarch64_fp16_ptr_type_node; | |
43e9d192 | 18855 | break; |
abbe1ed2 SMW |
18856 | case E_BFmode: |
18857 | field_t = aarch64_bf16_type_node; | |
18858 | field_ptr_t = aarch64_bf16_ptr_type_node; | |
18859 | break; | |
4e10a5a7 RS |
18860 | case E_V2SImode: |
18861 | case E_V4SImode: | |
43e9d192 IB |
18862 | { |
18863 | tree innertype = make_signed_type (GET_MODE_PRECISION (SImode)); | |
18864 | field_t = build_vector_type_for_mode (innertype, ag_mode); | |
18865 | field_ptr_t = build_pointer_type (field_t); | |
18866 | } | |
18867 | break; | |
18868 | default: | |
18869 | gcc_assert (0); | |
18870 | } | |
18871 | ||
18872 | /* *(field_ptr_t)&ha = *((field_ptr_t)vr_saved_area */ | |
ab563903 | 18873 | TREE_ADDRESSABLE (tmp_ha) = 1; |
43e9d192 IB |
18874 | tmp_ha = build1 (ADDR_EXPR, field_ptr_t, tmp_ha); |
18875 | addr = t; | |
18876 | t = fold_convert (field_ptr_t, addr); | |
18877 | t = build2 (MODIFY_EXPR, field_t, | |
18878 | build1 (INDIRECT_REF, field_t, tmp_ha), | |
18879 | build1 (INDIRECT_REF, field_t, t)); | |
18880 | ||
18881 | /* ha.field[i] = *((field_ptr_t)vr_saved_area + i) */ | |
18882 | for (i = 1; i < nregs; ++i) | |
18883 | { | |
18884 | addr = fold_build_pointer_plus_hwi (addr, UNITS_PER_VREG); | |
18885 | u = fold_convert (field_ptr_t, addr); | |
18886 | u = build2 (MODIFY_EXPR, field_t, | |
18887 | build2 (MEM_REF, field_t, tmp_ha, | |
18888 | build_int_cst (field_ptr_t, | |
18889 | (i * | |
18890 | int_size_in_bytes (field_t)))), | |
18891 | build1 (INDIRECT_REF, field_t, u)); | |
18892 | t = build2 (COMPOUND_EXPR, TREE_TYPE (t), t, u); | |
18893 | } | |
18894 | ||
18895 | u = fold_convert (TREE_TYPE (f_top), tmp_ha); | |
18896 | t = build2 (COMPOUND_EXPR, TREE_TYPE (f_top), t, u); | |
18897 | } | |
18898 | ||
18899 | COND_EXPR_ELSE (cond2) = t; | |
18900 | addr = fold_convert (build_pointer_type (type), cond1); | |
18901 | addr = build_va_arg_indirect_ref (addr); | |
18902 | ||
18903 | if (indirect_p) | |
18904 | addr = build_va_arg_indirect_ref (addr); | |
18905 | ||
18906 | return addr; | |
18907 | } | |
18908 | ||
18909 | /* Implement TARGET_SETUP_INCOMING_VARARGS. */ | |
18910 | ||
18911 | static void | |
e7056ca4 RS |
18912 | aarch64_setup_incoming_varargs (cumulative_args_t cum_v, |
18913 | const function_arg_info &arg, | |
18914 | int *pretend_size ATTRIBUTE_UNUSED, int no_rtl) | |
43e9d192 IB |
18915 | { |
18916 | CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); | |
18917 | CUMULATIVE_ARGS local_cum; | |
88e3bdd1 JW |
18918 | int gr_saved = cfun->va_list_gpr_size; |
18919 | int vr_saved = cfun->va_list_fpr_size; | |
43e9d192 IB |
18920 | |
18921 | /* The caller has advanced CUM up to, but not beyond, the last named | |
18922 | argument. Advance a local copy of CUM past the last "real" named | |
18923 | argument, to find out how many registers are left over. */ | |
18924 | local_cum = *cum; | |
6930c98c | 18925 | aarch64_function_arg_advance (pack_cumulative_args(&local_cum), arg); |
43e9d192 | 18926 | |
88e3bdd1 JW |
18927 | /* Found out how many registers we need to save. |
18928 | Honor tree-stdvar analysis results. */ | |
18929 | if (cfun->va_list_gpr_size) | |
18930 | gr_saved = MIN (NUM_ARG_REGS - local_cum.aapcs_ncrn, | |
18931 | cfun->va_list_gpr_size / UNITS_PER_WORD); | |
18932 | if (cfun->va_list_fpr_size) | |
18933 | vr_saved = MIN (NUM_FP_ARG_REGS - local_cum.aapcs_nvrn, | |
18934 | cfun->va_list_fpr_size / UNITS_PER_VREG); | |
43e9d192 | 18935 | |
d5726973 | 18936 | if (!TARGET_FLOAT) |
43e9d192 | 18937 | { |
261fb553 | 18938 | gcc_assert (local_cum.aapcs_nvrn == 0); |
43e9d192 IB |
18939 | vr_saved = 0; |
18940 | } | |
18941 | ||
18942 | if (!no_rtl) | |
18943 | { | |
18944 | if (gr_saved > 0) | |
18945 | { | |
18946 | rtx ptr, mem; | |
18947 | ||
18948 | /* virtual_incoming_args_rtx should have been 16-byte aligned. */ | |
18949 | ptr = plus_constant (Pmode, virtual_incoming_args_rtx, | |
18950 | - gr_saved * UNITS_PER_WORD); | |
18951 | mem = gen_frame_mem (BLKmode, ptr); | |
18952 | set_mem_alias_set (mem, get_varargs_alias_set ()); | |
18953 | ||
18954 | move_block_from_reg (local_cum.aapcs_ncrn + R0_REGNUM, | |
18955 | mem, gr_saved); | |
18956 | } | |
18957 | if (vr_saved > 0) | |
18958 | { | |
18959 | /* We can't use move_block_from_reg, because it will use | |
18960 | the wrong mode, storing D regs only. */ | |
ef4bddc2 | 18961 | machine_mode mode = TImode; |
88e3bdd1 | 18962 | int off, i, vr_start; |
43e9d192 IB |
18963 | |
18964 | /* Set OFF to the offset from virtual_incoming_args_rtx of | |
18965 | the first vector register. The VR save area lies below | |
18966 | the GR one, and is aligned to 16 bytes. */ | |
4f59f9f2 UB |
18967 | off = -ROUND_UP (gr_saved * UNITS_PER_WORD, |
18968 | STACK_BOUNDARY / BITS_PER_UNIT); | |
43e9d192 IB |
18969 | off -= vr_saved * UNITS_PER_VREG; |
18970 | ||
88e3bdd1 JW |
18971 | vr_start = V0_REGNUM + local_cum.aapcs_nvrn; |
18972 | for (i = 0; i < vr_saved; ++i) | |
43e9d192 IB |
18973 | { |
18974 | rtx ptr, mem; | |
18975 | ||
18976 | ptr = plus_constant (Pmode, virtual_incoming_args_rtx, off); | |
18977 | mem = gen_frame_mem (mode, ptr); | |
18978 | set_mem_alias_set (mem, get_varargs_alias_set ()); | |
88e3bdd1 | 18979 | aarch64_emit_move (mem, gen_rtx_REG (mode, vr_start + i)); |
43e9d192 IB |
18980 | off += UNITS_PER_VREG; |
18981 | } | |
18982 | } | |
18983 | } | |
18984 | ||
18985 | /* We don't save the size into *PRETEND_SIZE because we want to avoid | |
18986 | any complication of having crtl->args.pretend_args_size changed. */ | |
8799637a | 18987 | cfun->machine->frame.saved_varargs_size |
4f59f9f2 UB |
18988 | = (ROUND_UP (gr_saved * UNITS_PER_WORD, |
18989 | STACK_BOUNDARY / BITS_PER_UNIT) | |
43e9d192 IB |
18990 | + vr_saved * UNITS_PER_VREG); |
18991 | } | |
18992 | ||
18993 | static void | |
18994 | aarch64_conditional_register_usage (void) | |
18995 | { | |
18996 | int i; | |
18997 | if (!TARGET_FLOAT) | |
18998 | { | |
18999 | for (i = V0_REGNUM; i <= V31_REGNUM; i++) | |
19000 | { | |
19001 | fixed_regs[i] = 1; | |
19002 | call_used_regs[i] = 1; | |
19003 | } | |
19004 | } | |
43cacb12 RS |
19005 | if (!TARGET_SVE) |
19006 | for (i = P0_REGNUM; i <= P15_REGNUM; i++) | |
19007 | { | |
19008 | fixed_regs[i] = 1; | |
19009 | call_used_regs[i] = 1; | |
19010 | } | |
3751345d | 19011 | |
183bfdaf RS |
19012 | /* Only allow the FFR and FFRT to be accessed via special patterns. */ |
19013 | CLEAR_HARD_REG_BIT (operand_reg_set, FFR_REGNUM); | |
19014 | CLEAR_HARD_REG_BIT (operand_reg_set, FFRT_REGNUM); | |
19015 | ||
3751345d RE |
19016 | /* When tracking speculation, we need a couple of call-clobbered registers |
19017 | to track the speculation state. It would be nice to just use | |
19018 | IP0 and IP1, but currently there are numerous places that just | |
19019 | assume these registers are free for other uses (eg pointer | |
19020 | authentication). */ | |
19021 | if (aarch64_track_speculation) | |
19022 | { | |
19023 | fixed_regs[SPECULATION_TRACKER_REGNUM] = 1; | |
19024 | call_used_regs[SPECULATION_TRACKER_REGNUM] = 1; | |
19025 | fixed_regs[SPECULATION_SCRATCH_REGNUM] = 1; | |
19026 | call_used_regs[SPECULATION_SCRATCH_REGNUM] = 1; | |
19027 | } | |
43e9d192 IB |
19028 | } |
19029 | ||
38e62001 RS |
19030 | /* Implement TARGET_MEMBER_TYPE_FORCES_BLK. */ |
19031 | ||
19032 | bool | |
19033 | aarch64_member_type_forces_blk (const_tree field_or_array, machine_mode mode) | |
19034 | { | |
19035 | /* For records we're passed a FIELD_DECL, for arrays we're passed | |
19036 | an ARRAY_TYPE. In both cases we're interested in the TREE_TYPE. */ | |
19037 | const_tree type = TREE_TYPE (field_or_array); | |
19038 | ||
19039 | /* Assign BLKmode to anything that contains multiple SVE predicates. | |
19040 | For structures, the "multiple" case is indicated by MODE being | |
19041 | VOIDmode. */ | |
19042 | unsigned int num_zr, num_pr; | |
19043 | if (aarch64_sve::builtin_type_p (type, &num_zr, &num_pr) && num_pr != 0) | |
19044 | { | |
19045 | if (TREE_CODE (field_or_array) == ARRAY_TYPE) | |
19046 | return !simple_cst_equal (TYPE_SIZE (field_or_array), | |
19047 | TYPE_SIZE (type)); | |
19048 | return mode == VOIDmode; | |
19049 | } | |
19050 | ||
19051 | return default_member_type_forces_blk (field_or_array, mode); | |
19052 | } | |
19053 | ||
56fe3ca3 RS |
19054 | /* Bitmasks that indicate whether earlier versions of GCC would have |
19055 | taken a different path through the ABI logic. This should result in | |
19056 | a -Wpsabi warning if the earlier path led to a different ABI decision. | |
19057 | ||
19058 | WARN_PSABI_EMPTY_CXX17_BASE | |
19059 | Indicates that the type includes an artificial empty C++17 base field | |
19060 | that, prior to GCC 10.1, would prevent the type from being treated as | |
19061 | a HFA or HVA. See PR94383 for details. | |
19062 | ||
19063 | WARN_PSABI_NO_UNIQUE_ADDRESS | |
19064 | Indicates that the type includes an empty [[no_unique_address]] field | |
19065 | that, prior to GCC 10.1, would prevent the type from being treated as | |
19066 | a HFA or HVA. */ | |
19067 | const unsigned int WARN_PSABI_EMPTY_CXX17_BASE = 1U << 0; | |
19068 | const unsigned int WARN_PSABI_NO_UNIQUE_ADDRESS = 1U << 1; | |
19069 | ||
43e9d192 IB |
19070 | /* Walk down the type tree of TYPE counting consecutive base elements. |
19071 | If *MODEP is VOIDmode, then set it to the first valid floating point | |
19072 | type. If a non-floating point type is found, or if a floating point | |
19073 | type that doesn't match a non-VOIDmode *MODEP is found, then return -1, | |
e73a32d6 MM |
19074 | otherwise return the count in the sub-tree. |
19075 | ||
56fe3ca3 RS |
19076 | The WARN_PSABI_FLAGS argument allows the caller to check whether this |
19077 | function has changed its behavior relative to earlier versions of GCC. | |
19078 | Normally the argument should be nonnull and point to a zero-initialized | |
19079 | variable. The function then records whether the ABI decision might | |
19080 | be affected by a known fix to the ABI logic, setting the associated | |
19081 | WARN_PSABI_* bits if so. | |
19082 | ||
19083 | When the argument is instead a null pointer, the function tries to | |
19084 | simulate the behavior of GCC before all such ABI fixes were made. | |
19085 | This is useful to check whether the function returns something | |
19086 | different after the ABI fixes. */ | |
43e9d192 | 19087 | static int |
e73a32d6 | 19088 | aapcs_vfp_sub_candidate (const_tree type, machine_mode *modep, |
56fe3ca3 | 19089 | unsigned int *warn_psabi_flags) |
43e9d192 | 19090 | { |
ef4bddc2 | 19091 | machine_mode mode; |
43e9d192 IB |
19092 | HOST_WIDE_INT size; |
19093 | ||
38e62001 RS |
19094 | if (aarch64_sve::builtin_type_p (type)) |
19095 | return -1; | |
c600df9a | 19096 | |
43e9d192 IB |
19097 | switch (TREE_CODE (type)) |
19098 | { | |
19099 | case REAL_TYPE: | |
19100 | mode = TYPE_MODE (type); | |
1b62ed4f JG |
19101 | if (mode != DFmode && mode != SFmode |
19102 | && mode != TFmode && mode != HFmode) | |
43e9d192 IB |
19103 | return -1; |
19104 | ||
19105 | if (*modep == VOIDmode) | |
19106 | *modep = mode; | |
19107 | ||
19108 | if (*modep == mode) | |
19109 | return 1; | |
19110 | ||
19111 | break; | |
19112 | ||
19113 | case COMPLEX_TYPE: | |
19114 | mode = TYPE_MODE (TREE_TYPE (type)); | |
1b62ed4f JG |
19115 | if (mode != DFmode && mode != SFmode |
19116 | && mode != TFmode && mode != HFmode) | |
43e9d192 IB |
19117 | return -1; |
19118 | ||
19119 | if (*modep == VOIDmode) | |
19120 | *modep = mode; | |
19121 | ||
19122 | if (*modep == mode) | |
19123 | return 2; | |
19124 | ||
19125 | break; | |
19126 | ||
19127 | case VECTOR_TYPE: | |
19128 | /* Use V2SImode and V4SImode as representatives of all 64-bit | |
19129 | and 128-bit vector types. */ | |
19130 | size = int_size_in_bytes (type); | |
19131 | switch (size) | |
19132 | { | |
19133 | case 8: | |
19134 | mode = V2SImode; | |
19135 | break; | |
19136 | case 16: | |
19137 | mode = V4SImode; | |
19138 | break; | |
19139 | default: | |
19140 | return -1; | |
19141 | } | |
19142 | ||
19143 | if (*modep == VOIDmode) | |
19144 | *modep = mode; | |
19145 | ||
19146 | /* Vector modes are considered to be opaque: two vectors are | |
19147 | equivalent for the purposes of being homogeneous aggregates | |
19148 | if they are the same size. */ | |
19149 | if (*modep == mode) | |
19150 | return 1; | |
19151 | ||
19152 | break; | |
19153 | ||
19154 | case ARRAY_TYPE: | |
19155 | { | |
19156 | int count; | |
19157 | tree index = TYPE_DOMAIN (type); | |
19158 | ||
807e902e KZ |
19159 | /* Can't handle incomplete types nor sizes that are not |
19160 | fixed. */ | |
19161 | if (!COMPLETE_TYPE_P (type) | |
19162 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) | |
43e9d192 IB |
19163 | return -1; |
19164 | ||
e73a32d6 | 19165 | count = aapcs_vfp_sub_candidate (TREE_TYPE (type), modep, |
56fe3ca3 | 19166 | warn_psabi_flags); |
43e9d192 IB |
19167 | if (count == -1 |
19168 | || !index | |
19169 | || !TYPE_MAX_VALUE (index) | |
cc269bb6 | 19170 | || !tree_fits_uhwi_p (TYPE_MAX_VALUE (index)) |
43e9d192 | 19171 | || !TYPE_MIN_VALUE (index) |
cc269bb6 | 19172 | || !tree_fits_uhwi_p (TYPE_MIN_VALUE (index)) |
43e9d192 IB |
19173 | || count < 0) |
19174 | return -1; | |
19175 | ||
ae7e9ddd RS |
19176 | count *= (1 + tree_to_uhwi (TYPE_MAX_VALUE (index)) |
19177 | - tree_to_uhwi (TYPE_MIN_VALUE (index))); | |
43e9d192 IB |
19178 | |
19179 | /* There must be no padding. */ | |
6a70badb RS |
19180 | if (maybe_ne (wi::to_poly_wide (TYPE_SIZE (type)), |
19181 | count * GET_MODE_BITSIZE (*modep))) | |
43e9d192 IB |
19182 | return -1; |
19183 | ||
19184 | return count; | |
19185 | } | |
19186 | ||
19187 | case RECORD_TYPE: | |
19188 | { | |
19189 | int count = 0; | |
19190 | int sub_count; | |
19191 | tree field; | |
19192 | ||
807e902e KZ |
19193 | /* Can't handle incomplete types nor sizes that are not |
19194 | fixed. */ | |
19195 | if (!COMPLETE_TYPE_P (type) | |
19196 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) | |
43e9d192 IB |
19197 | return -1; |
19198 | ||
19199 | for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field)) | |
19200 | { | |
19201 | if (TREE_CODE (field) != FIELD_DECL) | |
19202 | continue; | |
19203 | ||
56fe3ca3 | 19204 | if (DECL_FIELD_ABI_IGNORED (field)) |
e73a32d6 | 19205 | { |
56fe3ca3 RS |
19206 | /* See whether this is something that earlier versions of |
19207 | GCC failed to ignore. */ | |
19208 | unsigned int flag; | |
19209 | if (lookup_attribute ("no_unique_address", | |
19210 | DECL_ATTRIBUTES (field))) | |
19211 | flag = WARN_PSABI_NO_UNIQUE_ADDRESS; | |
19212 | else if (cxx17_empty_base_field_p (field)) | |
19213 | flag = WARN_PSABI_EMPTY_CXX17_BASE; | |
19214 | else | |
19215 | /* No compatibility problem. */ | |
19216 | continue; | |
19217 | ||
19218 | /* Simulate the old behavior when WARN_PSABI_FLAGS is null. */ | |
19219 | if (warn_psabi_flags) | |
19220 | { | |
19221 | *warn_psabi_flags |= flag; | |
19222 | continue; | |
19223 | } | |
e73a32d6 MM |
19224 | } |
19225 | ||
19226 | sub_count = aapcs_vfp_sub_candidate (TREE_TYPE (field), modep, | |
56fe3ca3 | 19227 | warn_psabi_flags); |
43e9d192 IB |
19228 | if (sub_count < 0) |
19229 | return -1; | |
19230 | count += sub_count; | |
19231 | } | |
19232 | ||
19233 | /* There must be no padding. */ | |
6a70badb RS |
19234 | if (maybe_ne (wi::to_poly_wide (TYPE_SIZE (type)), |
19235 | count * GET_MODE_BITSIZE (*modep))) | |
43e9d192 IB |
19236 | return -1; |
19237 | ||
19238 | return count; | |
19239 | } | |
19240 | ||
19241 | case UNION_TYPE: | |
19242 | case QUAL_UNION_TYPE: | |
19243 | { | |
19244 | /* These aren't very interesting except in a degenerate case. */ | |
19245 | int count = 0; | |
19246 | int sub_count; | |
19247 | tree field; | |
19248 | ||
807e902e KZ |
19249 | /* Can't handle incomplete types nor sizes that are not |
19250 | fixed. */ | |
19251 | if (!COMPLETE_TYPE_P (type) | |
19252 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) | |
43e9d192 IB |
19253 | return -1; |
19254 | ||
19255 | for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field)) | |
19256 | { | |
19257 | if (TREE_CODE (field) != FIELD_DECL) | |
19258 | continue; | |
19259 | ||
e73a32d6 | 19260 | sub_count = aapcs_vfp_sub_candidate (TREE_TYPE (field), modep, |
56fe3ca3 | 19261 | warn_psabi_flags); |
43e9d192 IB |
19262 | if (sub_count < 0) |
19263 | return -1; | |
19264 | count = count > sub_count ? count : sub_count; | |
19265 | } | |
19266 | ||
19267 | /* There must be no padding. */ | |
6a70badb RS |
19268 | if (maybe_ne (wi::to_poly_wide (TYPE_SIZE (type)), |
19269 | count * GET_MODE_BITSIZE (*modep))) | |
43e9d192 IB |
19270 | return -1; |
19271 | ||
19272 | return count; | |
19273 | } | |
19274 | ||
19275 | default: | |
19276 | break; | |
19277 | } | |
19278 | ||
19279 | return -1; | |
19280 | } | |
19281 | ||
b6ec6215 KT |
19282 | /* Return TRUE if the type, as described by TYPE and MODE, is a short vector |
19283 | type as described in AAPCS64 \S 4.1.2. | |
19284 | ||
19285 | See the comment above aarch64_composite_type_p for the notes on MODE. */ | |
19286 | ||
19287 | static bool | |
19288 | aarch64_short_vector_p (const_tree type, | |
19289 | machine_mode mode) | |
19290 | { | |
6a70badb | 19291 | poly_int64 size = -1; |
b6ec6215 KT |
19292 | |
19293 | if (type && TREE_CODE (type) == VECTOR_TYPE) | |
38e62001 RS |
19294 | { |
19295 | if (aarch64_sve::builtin_type_p (type)) | |
19296 | return false; | |
19297 | size = int_size_in_bytes (type); | |
19298 | } | |
b6ec6215 | 19299 | else if (GET_MODE_CLASS (mode) == MODE_VECTOR_INT |
38e62001 RS |
19300 | || GET_MODE_CLASS (mode) == MODE_VECTOR_FLOAT) |
19301 | { | |
19302 | /* Rely only on the type, not the mode, when processing SVE types. */ | |
19303 | if (type && aarch64_some_values_include_pst_objects_p (type)) | |
b2672dd6 FY |
19304 | /* Leave later code to report an error if SVE is disabled. */ |
19305 | gcc_assert (!TARGET_SVE || aarch64_sve_mode_p (mode)); | |
38e62001 RS |
19306 | else |
19307 | size = GET_MODE_SIZE (mode); | |
19308 | } | |
19309 | if (known_eq (size, 8) || known_eq (size, 16)) | |
19310 | { | |
19311 | /* 64-bit and 128-bit vectors should only acquire an SVE mode if | |
19312 | they are being treated as scalable AAPCS64 types. */ | |
19313 | gcc_assert (!aarch64_sve_mode_p (mode)); | |
19314 | return true; | |
19315 | } | |
19316 | return false; | |
b6ec6215 KT |
19317 | } |
19318 | ||
43e9d192 IB |
19319 | /* Return TRUE if the type, as described by TYPE and MODE, is a composite |
19320 | type as described in AAPCS64 \S 4.3. This includes aggregate, union and | |
19321 | array types. The C99 floating-point complex types are also considered | |
19322 | as composite types, according to AAPCS64 \S 7.1.1. The complex integer | |
19323 | types, which are GCC extensions and out of the scope of AAPCS64, are | |
19324 | treated as composite types here as well. | |
19325 | ||
19326 | Note that MODE itself is not sufficient in determining whether a type | |
19327 | is such a composite type or not. This is because | |
19328 | stor-layout.c:compute_record_mode may have already changed the MODE | |
19329 | (BLKmode) of a RECORD_TYPE TYPE to some other mode. For example, a | |
19330 | structure with only one field may have its MODE set to the mode of the | |
19331 | field. Also an integer mode whose size matches the size of the | |
19332 | RECORD_TYPE type may be used to substitute the original mode | |
19333 | (i.e. BLKmode) in certain circumstances. In other words, MODE cannot be | |
19334 | solely relied on. */ | |
19335 | ||
19336 | static bool | |
19337 | aarch64_composite_type_p (const_tree type, | |
ef4bddc2 | 19338 | machine_mode mode) |
43e9d192 | 19339 | { |
b6ec6215 KT |
19340 | if (aarch64_short_vector_p (type, mode)) |
19341 | return false; | |
19342 | ||
43e9d192 IB |
19343 | if (type && (AGGREGATE_TYPE_P (type) || TREE_CODE (type) == COMPLEX_TYPE)) |
19344 | return true; | |
19345 | ||
19346 | if (mode == BLKmode | |
19347 | || GET_MODE_CLASS (mode) == MODE_COMPLEX_FLOAT | |
19348 | || GET_MODE_CLASS (mode) == MODE_COMPLEX_INT) | |
19349 | return true; | |
19350 | ||
19351 | return false; | |
19352 | } | |
19353 | ||
43e9d192 IB |
19354 | /* Return TRUE if an argument, whose type is described by TYPE and MODE, |
19355 | shall be passed or returned in simd/fp register(s) (providing these | |
19356 | parameter passing registers are available). | |
19357 | ||
19358 | Upon successful return, *COUNT returns the number of needed registers, | |
b6073c9f | 19359 | *BASE_MODE returns the mode of the individual register and when IS_HA |
43e9d192 | 19360 | is not NULL, *IS_HA indicates whether or not the argument is a homogeneous |
56fe3ca3 RS |
19361 | floating-point aggregate or a homogeneous short-vector aggregate. |
19362 | ||
19363 | SILENT_P is true if the function should refrain from reporting any | |
19364 | diagnostics. This should only be used if the caller is certain that | |
19365 | any ABI decisions would eventually come through this function with | |
19366 | SILENT_P set to false. */ | |
43e9d192 IB |
19367 | |
19368 | static bool | |
ef4bddc2 | 19369 | aarch64_vfp_is_call_or_return_candidate (machine_mode mode, |
43e9d192 | 19370 | const_tree type, |
ef4bddc2 | 19371 | machine_mode *base_mode, |
43e9d192 | 19372 | int *count, |
56fe3ca3 RS |
19373 | bool *is_ha, |
19374 | bool silent_p) | |
43e9d192 | 19375 | { |
c600df9a RS |
19376 | if (is_ha != NULL) *is_ha = false; |
19377 | ||
ef4bddc2 | 19378 | machine_mode new_mode = VOIDmode; |
43e9d192 IB |
19379 | bool composite_p = aarch64_composite_type_p (type, mode); |
19380 | ||
43e9d192 IB |
19381 | if ((!composite_p && GET_MODE_CLASS (mode) == MODE_FLOAT) |
19382 | || aarch64_short_vector_p (type, mode)) | |
19383 | { | |
19384 | *count = 1; | |
19385 | new_mode = mode; | |
19386 | } | |
19387 | else if (GET_MODE_CLASS (mode) == MODE_COMPLEX_FLOAT) | |
19388 | { | |
19389 | if (is_ha != NULL) *is_ha = true; | |
19390 | *count = 2; | |
19391 | new_mode = GET_MODE_INNER (mode); | |
19392 | } | |
19393 | else if (type && composite_p) | |
19394 | { | |
56fe3ca3 RS |
19395 | unsigned int warn_psabi_flags = 0; |
19396 | int ag_count = aapcs_vfp_sub_candidate (type, &new_mode, | |
19397 | &warn_psabi_flags); | |
43e9d192 IB |
19398 | if (ag_count > 0 && ag_count <= HA_MAX_NUM_FLDS) |
19399 | { | |
e73a32d6 MM |
19400 | static unsigned last_reported_type_uid; |
19401 | unsigned uid = TYPE_UID (TYPE_MAIN_VARIANT (type)); | |
19402 | int alt; | |
56fe3ca3 RS |
19403 | if (!silent_p |
19404 | && warn_psabi | |
19405 | && warn_psabi_flags | |
e73a32d6 MM |
19406 | && uid != last_reported_type_uid |
19407 | && ((alt = aapcs_vfp_sub_candidate (type, &new_mode, NULL)) | |
19408 | != ag_count)) | |
19409 | { | |
e33a1eae JJ |
19410 | const char *url |
19411 | = CHANGES_ROOT_URL "gcc-10/changes.html#empty_base"; | |
e73a32d6 MM |
19412 | gcc_assert (alt == -1); |
19413 | last_reported_type_uid = uid; | |
56fe3ca3 RS |
19414 | /* Use TYPE_MAIN_VARIANT to strip any redundant const |
19415 | qualification. */ | |
19416 | if (warn_psabi_flags & WARN_PSABI_NO_UNIQUE_ADDRESS) | |
19417 | inform (input_location, "parameter passing for argument of " | |
19418 | "type %qT with %<[[no_unique_address]]%> members " | |
691eeb65 JJ |
19419 | "changed %{in GCC 10.1%}", |
19420 | TYPE_MAIN_VARIANT (type), url); | |
56fe3ca3 RS |
19421 | else if (warn_psabi_flags & WARN_PSABI_EMPTY_CXX17_BASE) |
19422 | inform (input_location, "parameter passing for argument of " | |
19423 | "type %qT when C++17 is enabled changed to match " | |
691eeb65 JJ |
19424 | "C++14 %{in GCC 10.1%}", |
19425 | TYPE_MAIN_VARIANT (type), url); | |
e73a32d6 MM |
19426 | } |
19427 | ||
43e9d192 IB |
19428 | if (is_ha != NULL) *is_ha = true; |
19429 | *count = ag_count; | |
19430 | } | |
19431 | else | |
19432 | return false; | |
19433 | } | |
19434 | else | |
19435 | return false; | |
19436 | ||
38e62001 | 19437 | gcc_assert (!aarch64_sve_mode_p (new_mode)); |
43e9d192 IB |
19438 | *base_mode = new_mode; |
19439 | return true; | |
19440 | } | |
19441 | ||
19442 | /* Implement TARGET_STRUCT_VALUE_RTX. */ | |
19443 | ||
19444 | static rtx | |
19445 | aarch64_struct_value_rtx (tree fndecl ATTRIBUTE_UNUSED, | |
19446 | int incoming ATTRIBUTE_UNUSED) | |
19447 | { | |
19448 | return gen_rtx_REG (Pmode, AARCH64_STRUCT_VALUE_REGNUM); | |
19449 | } | |
19450 | ||
19451 | /* Implements target hook vector_mode_supported_p. */ | |
19452 | static bool | |
ef4bddc2 | 19453 | aarch64_vector_mode_supported_p (machine_mode mode) |
43e9d192 | 19454 | { |
43cacb12 | 19455 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); |
cc68f7c2 | 19456 | return vec_flags != 0 && (vec_flags & VEC_STRUCT) == 0; |
43e9d192 IB |
19457 | } |
19458 | ||
4aeb1ba7 RS |
19459 | /* Return the full-width SVE vector mode for element mode MODE, if one |
19460 | exists. */ | |
19461 | opt_machine_mode | |
19462 | aarch64_full_sve_mode (scalar_mode mode) | |
19463 | { | |
19464 | switch (mode) | |
19465 | { | |
19466 | case E_DFmode: | |
19467 | return VNx2DFmode; | |
19468 | case E_SFmode: | |
19469 | return VNx4SFmode; | |
19470 | case E_HFmode: | |
19471 | return VNx8HFmode; | |
02fcd8ac RS |
19472 | case E_BFmode: |
19473 | return VNx8BFmode; | |
4aeb1ba7 | 19474 | case E_DImode: |
02fcd8ac | 19475 | return VNx2DImode; |
4aeb1ba7 RS |
19476 | case E_SImode: |
19477 | return VNx4SImode; | |
19478 | case E_HImode: | |
19479 | return VNx8HImode; | |
19480 | case E_QImode: | |
19481 | return VNx16QImode; | |
19482 | default: | |
19483 | return opt_machine_mode (); | |
19484 | } | |
19485 | } | |
19486 | ||
19487 | /* Return the 128-bit Advanced SIMD vector mode for element mode MODE, | |
19488 | if it exists. */ | |
19489 | opt_machine_mode | |
19490 | aarch64_vq_mode (scalar_mode mode) | |
19491 | { | |
19492 | switch (mode) | |
19493 | { | |
19494 | case E_DFmode: | |
19495 | return V2DFmode; | |
19496 | case E_SFmode: | |
19497 | return V4SFmode; | |
19498 | case E_HFmode: | |
19499 | return V8HFmode; | |
abbe1ed2 SMW |
19500 | case E_BFmode: |
19501 | return V8BFmode; | |
4aeb1ba7 RS |
19502 | case E_SImode: |
19503 | return V4SImode; | |
19504 | case E_HImode: | |
19505 | return V8HImode; | |
19506 | case E_QImode: | |
19507 | return V16QImode; | |
19508 | case E_DImode: | |
19509 | return V2DImode; | |
19510 | default: | |
19511 | return opt_machine_mode (); | |
19512 | } | |
19513 | } | |
19514 | ||
b7342d25 IB |
19515 | /* Return appropriate SIMD container |
19516 | for MODE within a vector of WIDTH bits. */ | |
ef4bddc2 | 19517 | static machine_mode |
43cacb12 | 19518 | aarch64_simd_container_mode (scalar_mode mode, poly_int64 width) |
43e9d192 | 19519 | { |
9b070057 RS |
19520 | if (TARGET_SVE |
19521 | && maybe_ne (width, 128) | |
19522 | && known_eq (width, BITS_PER_SVE_VECTOR)) | |
4aeb1ba7 | 19523 | return aarch64_full_sve_mode (mode).else_mode (word_mode); |
43cacb12 RS |
19524 | |
19525 | gcc_assert (known_eq (width, 64) || known_eq (width, 128)); | |
43e9d192 | 19526 | if (TARGET_SIMD) |
b7342d25 | 19527 | { |
43cacb12 | 19528 | if (known_eq (width, 128)) |
4aeb1ba7 | 19529 | return aarch64_vq_mode (mode).else_mode (word_mode); |
b7342d25 IB |
19530 | else |
19531 | switch (mode) | |
19532 | { | |
4e10a5a7 | 19533 | case E_SFmode: |
b7342d25 | 19534 | return V2SFmode; |
4e10a5a7 | 19535 | case E_HFmode: |
b719f884 | 19536 | return V4HFmode; |
abbe1ed2 SMW |
19537 | case E_BFmode: |
19538 | return V4BFmode; | |
4e10a5a7 | 19539 | case E_SImode: |
b7342d25 | 19540 | return V2SImode; |
4e10a5a7 | 19541 | case E_HImode: |
b7342d25 | 19542 | return V4HImode; |
4e10a5a7 | 19543 | case E_QImode: |
b7342d25 IB |
19544 | return V8QImode; |
19545 | default: | |
19546 | break; | |
19547 | } | |
19548 | } | |
43e9d192 IB |
19549 | return word_mode; |
19550 | } | |
19551 | ||
5f29f3d5 KT |
19552 | /* Compare an SVE mode SVE_M and an Advanced SIMD mode ASIMD_M |
19553 | and return whether the SVE mode should be preferred over the | |
19554 | Advanced SIMD one in aarch64_autovectorize_vector_modes. */ | |
19555 | static bool | |
19556 | aarch64_cmp_autovec_modes (machine_mode sve_m, machine_mode asimd_m) | |
19557 | { | |
19558 | /* Take into account the aarch64-autovec-preference param if non-zero. */ | |
19559 | bool only_asimd_p = aarch64_autovec_preference == 1; | |
19560 | bool only_sve_p = aarch64_autovec_preference == 2; | |
19561 | ||
19562 | if (only_asimd_p) | |
19563 | return false; | |
19564 | if (only_sve_p) | |
19565 | return true; | |
19566 | ||
19567 | /* The preference in case of a tie in costs. */ | |
19568 | bool prefer_asimd = aarch64_autovec_preference == 3; | |
19569 | bool prefer_sve = aarch64_autovec_preference == 4; | |
19570 | ||
5f29f3d5 KT |
19571 | poly_int64 nunits_sve = GET_MODE_NUNITS (sve_m); |
19572 | poly_int64 nunits_asimd = GET_MODE_NUNITS (asimd_m); | |
19573 | /* If the CPU information does not have an SVE width registered use the | |
19574 | generic poly_int comparison that prefers SVE. If a preference is | |
19575 | explicitly requested avoid this path. */ | |
fa3ca615 | 19576 | if (aarch64_tune_params.sve_width == SVE_SCALABLE |
5f29f3d5 KT |
19577 | && !prefer_asimd |
19578 | && !prefer_sve) | |
19579 | return maybe_gt (nunits_sve, nunits_asimd); | |
19580 | ||
19581 | /* Otherwise estimate the runtime width of the modes involved. */ | |
64432b68 KT |
19582 | HOST_WIDE_INT est_sve = estimated_poly_value (nunits_sve); |
19583 | HOST_WIDE_INT est_asimd = estimated_poly_value (nunits_asimd); | |
5f29f3d5 KT |
19584 | |
19585 | /* Preferring SVE means picking it first unless the Advanced SIMD mode | |
19586 | is clearly wider. */ | |
19587 | if (prefer_sve) | |
19588 | return est_sve >= est_asimd; | |
19589 | /* Conversely, preferring Advanced SIMD means picking SVE only if SVE | |
19590 | is clearly wider. */ | |
19591 | if (prefer_asimd) | |
19592 | return est_sve > est_asimd; | |
19593 | ||
19594 | /* In the default case prefer Advanced SIMD over SVE in case of a tie. */ | |
19595 | return est_sve > est_asimd; | |
19596 | } | |
19597 | ||
b7342d25 | 19598 | /* Return 128-bit container as the preferred SIMD mode for MODE. */ |
ef4bddc2 | 19599 | static machine_mode |
005ba29c | 19600 | aarch64_preferred_simd_mode (scalar_mode mode) |
b7342d25 | 19601 | { |
5f29f3d5 KT |
19602 | /* Take into account explicit auto-vectorization ISA preferences through |
19603 | aarch64_cmp_autovec_modes. */ | |
7ff5706f RS |
19604 | if (TARGET_SVE && aarch64_cmp_autovec_modes (VNx16QImode, V16QImode)) |
19605 | return aarch64_full_sve_mode (mode).else_mode (word_mode); | |
19606 | if (TARGET_SIMD) | |
19607 | return aarch64_vq_mode (mode).else_mode (word_mode); | |
19608 | return word_mode; | |
b7342d25 IB |
19609 | } |
19610 | ||
86e36728 | 19611 | /* Return a list of possible vector sizes for the vectorizer |
3b357264 | 19612 | to iterate over. */ |
bcc7e346 | 19613 | static unsigned int |
e021fb86 | 19614 | aarch64_autovectorize_vector_modes (vector_modes *modes, bool) |
3b357264 | 19615 | { |
cc68f7c2 RS |
19616 | static const machine_mode sve_modes[] = { |
19617 | /* Try using full vectors for all element types. */ | |
19618 | VNx16QImode, | |
19619 | ||
19620 | /* Try using 16-bit containers for 8-bit elements and full vectors | |
19621 | for wider elements. */ | |
19622 | VNx8QImode, | |
19623 | ||
19624 | /* Try using 32-bit containers for 8-bit and 16-bit elements and | |
19625 | full vectors for wider elements. */ | |
19626 | VNx4QImode, | |
74166aab | 19627 | |
cc68f7c2 RS |
19628 | /* Try using 64-bit containers for all element types. */ |
19629 | VNx2QImode | |
19630 | }; | |
19631 | ||
19632 | static const machine_mode advsimd_modes[] = { | |
19633 | /* Try using 128-bit vectors for all element types. */ | |
19634 | V16QImode, | |
19635 | ||
19636 | /* Try using 64-bit vectors for 8-bit elements and 128-bit vectors | |
19637 | for wider elements. */ | |
19638 | V8QImode, | |
19639 | ||
19640 | /* Try using 64-bit vectors for 16-bit elements and 128-bit vectors | |
19641 | for wider elements. | |
19642 | ||
19643 | TODO: We could support a limited form of V4QImode too, so that | |
19644 | we use 32-bit vectors for 8-bit elements. */ | |
19645 | V4HImode, | |
19646 | ||
19647 | /* Try using 64-bit vectors for 32-bit elements and 128-bit vectors | |
19648 | for 64-bit elements. | |
74166aab | 19649 | |
cc68f7c2 RS |
19650 | TODO: We could similarly support limited forms of V2QImode and V2HImode |
19651 | for this case. */ | |
19652 | V2SImode | |
19653 | }; | |
74166aab | 19654 | |
cc68f7c2 RS |
19655 | /* Try using N-byte SVE modes only after trying N-byte Advanced SIMD mode. |
19656 | This is because: | |
74166aab | 19657 | |
cc68f7c2 RS |
19658 | - If we can't use N-byte Advanced SIMD vectors then the placement |
19659 | doesn't matter; we'll just continue as though the Advanced SIMD | |
19660 | entry didn't exist. | |
74166aab | 19661 | |
cc68f7c2 RS |
19662 | - If an SVE main loop with N bytes ends up being cheaper than an |
19663 | Advanced SIMD main loop with N bytes then by default we'll replace | |
19664 | the Advanced SIMD version with the SVE one. | |
74166aab | 19665 | |
cc68f7c2 RS |
19666 | - If an Advanced SIMD main loop with N bytes ends up being cheaper |
19667 | than an SVE main loop with N bytes then by default we'll try to | |
19668 | use the SVE loop to vectorize the epilogue instead. */ | |
5f29f3d5 KT |
19669 | |
19670 | bool only_asimd_p = aarch64_autovec_preference == 1; | |
19671 | bool only_sve_p = aarch64_autovec_preference == 2; | |
19672 | ||
19673 | unsigned int sve_i = (TARGET_SVE && !only_asimd_p) ? 0 : ARRAY_SIZE (sve_modes); | |
cc68f7c2 | 19674 | unsigned int advsimd_i = 0; |
5f29f3d5 KT |
19675 | |
19676 | while (!only_sve_p && advsimd_i < ARRAY_SIZE (advsimd_modes)) | |
cc68f7c2 RS |
19677 | { |
19678 | if (sve_i < ARRAY_SIZE (sve_modes) | |
5f29f3d5 KT |
19679 | && aarch64_cmp_autovec_modes (sve_modes[sve_i], |
19680 | advsimd_modes[advsimd_i])) | |
cc68f7c2 RS |
19681 | modes->safe_push (sve_modes[sve_i++]); |
19682 | else | |
19683 | modes->safe_push (advsimd_modes[advsimd_i++]); | |
19684 | } | |
19685 | while (sve_i < ARRAY_SIZE (sve_modes)) | |
5f29f3d5 | 19686 | modes->safe_push (sve_modes[sve_i++]); |
bcc7e346 | 19687 | |
eb23241b RS |
19688 | unsigned int flags = 0; |
19689 | /* Consider enabling VECT_COMPARE_COSTS for SVE, both so that we | |
19690 | can compare SVE against Advanced SIMD and so that we can compare | |
19691 | multiple SVE vectorization approaches against each other. There's | |
19692 | not really any point doing this for Advanced SIMD only, since the | |
19693 | first mode that works should always be the best. */ | |
19694 | if (TARGET_SVE && aarch64_sve_compare_costs) | |
19695 | flags |= VECT_COMPARE_COSTS; | |
19696 | return flags; | |
3b357264 JG |
19697 | } |
19698 | ||
ac2b960f YZ |
19699 | /* Implement TARGET_MANGLE_TYPE. */ |
19700 | ||
6f549691 | 19701 | static const char * |
ac2b960f YZ |
19702 | aarch64_mangle_type (const_tree type) |
19703 | { | |
19704 | /* The AArch64 ABI documents say that "__va_list" has to be | |
17f8ace2 | 19705 | mangled as if it is in the "std" namespace. */ |
ac2b960f YZ |
19706 | if (lang_hooks.types_compatible_p (CONST_CAST_TREE (type), va_list_type)) |
19707 | return "St9__va_list"; | |
19708 | ||
abbe1ed2 | 19709 | /* Half-precision floating point types. */ |
c2ec330c | 19710 | if (TREE_CODE (type) == REAL_TYPE && TYPE_PRECISION (type) == 16) |
abbe1ed2 SMW |
19711 | { |
19712 | if (TYPE_MODE (type) == BFmode) | |
19713 | return "u6__bf16"; | |
19714 | else | |
19715 | return "Dh"; | |
19716 | } | |
c2ec330c | 19717 | |
f9d53c27 TB |
19718 | /* Mangle AArch64-specific internal types. TYPE_NAME is non-NULL_TREE for |
19719 | builtin types. */ | |
19720 | if (TYPE_NAME (type) != NULL) | |
624d0f07 RS |
19721 | { |
19722 | const char *res; | |
19723 | if ((res = aarch64_general_mangle_builtin_type (type)) | |
19724 | || (res = aarch64_sve::mangle_builtin_type (type))) | |
19725 | return res; | |
19726 | } | |
c6fc9e43 | 19727 | |
ac2b960f YZ |
19728 | /* Use the default mangling. */ |
19729 | return NULL; | |
19730 | } | |
19731 | ||
65ef05d0 RS |
19732 | /* Implement TARGET_VERIFY_TYPE_CONTEXT. */ |
19733 | ||
19734 | static bool | |
19735 | aarch64_verify_type_context (location_t loc, type_context_kind context, | |
19736 | const_tree type, bool silent_p) | |
19737 | { | |
19738 | return aarch64_sve::verify_type_context (loc, context, type, silent_p); | |
19739 | } | |
19740 | ||
75cf1494 KT |
19741 | /* Find the first rtx_insn before insn that will generate an assembly |
19742 | instruction. */ | |
19743 | ||
19744 | static rtx_insn * | |
19745 | aarch64_prev_real_insn (rtx_insn *insn) | |
19746 | { | |
19747 | if (!insn) | |
19748 | return NULL; | |
19749 | ||
19750 | do | |
19751 | { | |
19752 | insn = prev_real_insn (insn); | |
19753 | } | |
19754 | while (insn && recog_memoized (insn) < 0); | |
19755 | ||
19756 | return insn; | |
19757 | } | |
19758 | ||
19759 | static bool | |
19760 | is_madd_op (enum attr_type t1) | |
19761 | { | |
19762 | unsigned int i; | |
19763 | /* A number of these may be AArch32 only. */ | |
19764 | enum attr_type mlatypes[] = { | |
19765 | TYPE_MLA, TYPE_MLAS, TYPE_SMLAD, TYPE_SMLADX, TYPE_SMLAL, TYPE_SMLALD, | |
19766 | TYPE_SMLALS, TYPE_SMLALXY, TYPE_SMLAWX, TYPE_SMLAWY, TYPE_SMLAXY, | |
19767 | TYPE_SMMLA, TYPE_UMLAL, TYPE_UMLALS,TYPE_SMLSD, TYPE_SMLSDX, TYPE_SMLSLD | |
19768 | }; | |
19769 | ||
19770 | for (i = 0; i < sizeof (mlatypes) / sizeof (enum attr_type); i++) | |
19771 | { | |
19772 | if (t1 == mlatypes[i]) | |
19773 | return true; | |
19774 | } | |
19775 | ||
19776 | return false; | |
19777 | } | |
19778 | ||
19779 | /* Check if there is a register dependency between a load and the insn | |
19780 | for which we hold recog_data. */ | |
19781 | ||
19782 | static bool | |
19783 | dep_between_memop_and_curr (rtx memop) | |
19784 | { | |
19785 | rtx load_reg; | |
19786 | int opno; | |
19787 | ||
8baff86e | 19788 | gcc_assert (GET_CODE (memop) == SET); |
75cf1494 KT |
19789 | |
19790 | if (!REG_P (SET_DEST (memop))) | |
19791 | return false; | |
19792 | ||
19793 | load_reg = SET_DEST (memop); | |
8baff86e | 19794 | for (opno = 1; opno < recog_data.n_operands; opno++) |
75cf1494 KT |
19795 | { |
19796 | rtx operand = recog_data.operand[opno]; | |
19797 | if (REG_P (operand) | |
19798 | && reg_overlap_mentioned_p (load_reg, operand)) | |
19799 | return true; | |
19800 | ||
19801 | } | |
19802 | return false; | |
19803 | } | |
19804 | ||
8baff86e KT |
19805 | |
19806 | /* When working around the Cortex-A53 erratum 835769, | |
19807 | given rtx_insn INSN, return true if it is a 64-bit multiply-accumulate | |
19808 | instruction and has a preceding memory instruction such that a NOP | |
19809 | should be inserted between them. */ | |
19810 | ||
75cf1494 KT |
19811 | bool |
19812 | aarch64_madd_needs_nop (rtx_insn* insn) | |
19813 | { | |
19814 | enum attr_type attr_type; | |
19815 | rtx_insn *prev; | |
19816 | rtx body; | |
19817 | ||
b32c1043 | 19818 | if (!TARGET_FIX_ERR_A53_835769) |
75cf1494 KT |
19819 | return false; |
19820 | ||
e322d6e3 | 19821 | if (!INSN_P (insn) || recog_memoized (insn) < 0) |
75cf1494 KT |
19822 | return false; |
19823 | ||
19824 | attr_type = get_attr_type (insn); | |
19825 | if (!is_madd_op (attr_type)) | |
19826 | return false; | |
19827 | ||
19828 | prev = aarch64_prev_real_insn (insn); | |
3fea1a75 KT |
19829 | /* aarch64_prev_real_insn can call recog_memoized on insns other than INSN. |
19830 | Restore recog state to INSN to avoid state corruption. */ | |
19831 | extract_constrain_insn_cached (insn); | |
19832 | ||
550e2205 | 19833 | if (!prev || !contains_mem_rtx_p (PATTERN (prev))) |
75cf1494 KT |
19834 | return false; |
19835 | ||
19836 | body = single_set (prev); | |
19837 | ||
19838 | /* If the previous insn is a memory op and there is no dependency between | |
8baff86e KT |
19839 | it and the DImode madd, emit a NOP between them. If body is NULL then we |
19840 | have a complex memory operation, probably a load/store pair. | |
19841 | Be conservative for now and emit a NOP. */ | |
19842 | if (GET_MODE (recog_data.operand[0]) == DImode | |
19843 | && (!body || !dep_between_memop_and_curr (body))) | |
75cf1494 KT |
19844 | return true; |
19845 | ||
19846 | return false; | |
19847 | ||
19848 | } | |
19849 | ||
8baff86e KT |
19850 | |
19851 | /* Implement FINAL_PRESCAN_INSN. */ | |
19852 | ||
75cf1494 KT |
19853 | void |
19854 | aarch64_final_prescan_insn (rtx_insn *insn) | |
19855 | { | |
19856 | if (aarch64_madd_needs_nop (insn)) | |
19857 | fprintf (asm_out_file, "\tnop // between mem op and mult-accumulate\n"); | |
19858 | } | |
19859 | ||
19860 | ||
43cacb12 RS |
19861 | /* Return true if BASE_OR_STEP is a valid immediate operand for an SVE INDEX |
19862 | instruction. */ | |
19863 | ||
19864 | bool | |
19865 | aarch64_sve_index_immediate_p (rtx base_or_step) | |
19866 | { | |
19867 | return (CONST_INT_P (base_or_step) | |
19868 | && IN_RANGE (INTVAL (base_or_step), -16, 15)); | |
19869 | } | |
19870 | ||
f3582fda RS |
19871 | /* Return true if X is a valid immediate for the SVE ADD and SUB instructions |
19872 | when applied to mode MODE. Negate X first if NEGATE_P is true. */ | |
43cacb12 RS |
19873 | |
19874 | bool | |
f3582fda | 19875 | aarch64_sve_arith_immediate_p (machine_mode mode, rtx x, bool negate_p) |
43cacb12 | 19876 | { |
f3582fda RS |
19877 | rtx elt = unwrap_const_vec_duplicate (x); |
19878 | if (!CONST_INT_P (elt)) | |
43cacb12 RS |
19879 | return false; |
19880 | ||
19881 | HOST_WIDE_INT val = INTVAL (elt); | |
19882 | if (negate_p) | |
19883 | val = -val; | |
f3582fda | 19884 | val &= GET_MODE_MASK (GET_MODE_INNER (mode)); |
43cacb12 RS |
19885 | |
19886 | if (val & 0xff) | |
19887 | return IN_RANGE (val, 0, 0xff); | |
19888 | return IN_RANGE (val, 0, 0xff00); | |
19889 | } | |
19890 | ||
624d0f07 | 19891 | /* Return true if X is a valid immediate for the SVE SQADD and SQSUB |
f3582fda RS |
19892 | instructions when applied to mode MODE. Negate X first if NEGATE_P |
19893 | is true. */ | |
624d0f07 RS |
19894 | |
19895 | bool | |
f3582fda | 19896 | aarch64_sve_sqadd_sqsub_immediate_p (machine_mode mode, rtx x, bool negate_p) |
624d0f07 | 19897 | { |
f3582fda | 19898 | if (!aarch64_sve_arith_immediate_p (mode, x, negate_p)) |
624d0f07 RS |
19899 | return false; |
19900 | ||
19901 | /* After the optional negation, the immediate must be nonnegative. | |
19902 | E.g. a saturating add of -127 must be done via SQSUB Zn.B, Zn.B, #127 | |
19903 | instead of SQADD Zn.B, Zn.B, #129. */ | |
f3582fda | 19904 | rtx elt = unwrap_const_vec_duplicate (x); |
624d0f07 RS |
19905 | return negate_p == (INTVAL (elt) < 0); |
19906 | } | |
19907 | ||
43cacb12 RS |
19908 | /* Return true if X is a valid immediate operand for an SVE logical |
19909 | instruction such as AND. */ | |
19910 | ||
19911 | bool | |
19912 | aarch64_sve_bitmask_immediate_p (rtx x) | |
19913 | { | |
19914 | rtx elt; | |
19915 | ||
19916 | return (const_vec_duplicate_p (x, &elt) | |
19917 | && CONST_INT_P (elt) | |
19918 | && aarch64_bitmask_imm (INTVAL (elt), | |
19919 | GET_MODE_INNER (GET_MODE (x)))); | |
19920 | } | |
19921 | ||
19922 | /* Return true if X is a valid immediate for the SVE DUP and CPY | |
19923 | instructions. */ | |
19924 | ||
19925 | bool | |
19926 | aarch64_sve_dup_immediate_p (rtx x) | |
19927 | { | |
d29f7dd5 RS |
19928 | x = aarch64_bit_representation (unwrap_const_vec_duplicate (x)); |
19929 | if (!CONST_INT_P (x)) | |
43cacb12 RS |
19930 | return false; |
19931 | ||
d29f7dd5 | 19932 | HOST_WIDE_INT val = INTVAL (x); |
43cacb12 RS |
19933 | if (val & 0xff) |
19934 | return IN_RANGE (val, -0x80, 0x7f); | |
19935 | return IN_RANGE (val, -0x8000, 0x7f00); | |
19936 | } | |
19937 | ||
19938 | /* Return true if X is a valid immediate operand for an SVE CMP instruction. | |
19939 | SIGNED_P says whether the operand is signed rather than unsigned. */ | |
19940 | ||
19941 | bool | |
19942 | aarch64_sve_cmp_immediate_p (rtx x, bool signed_p) | |
19943 | { | |
6bc67182 RS |
19944 | x = unwrap_const_vec_duplicate (x); |
19945 | return (CONST_INT_P (x) | |
43cacb12 | 19946 | && (signed_p |
6bc67182 RS |
19947 | ? IN_RANGE (INTVAL (x), -16, 15) |
19948 | : IN_RANGE (INTVAL (x), 0, 127))); | |
43cacb12 RS |
19949 | } |
19950 | ||
19951 | /* Return true if X is a valid immediate operand for an SVE FADD or FSUB | |
19952 | instruction. Negate X first if NEGATE_P is true. */ | |
19953 | ||
19954 | bool | |
19955 | aarch64_sve_float_arith_immediate_p (rtx x, bool negate_p) | |
19956 | { | |
19957 | rtx elt; | |
19958 | REAL_VALUE_TYPE r; | |
19959 | ||
19960 | if (!const_vec_duplicate_p (x, &elt) | |
3793ecc1 | 19961 | || !CONST_DOUBLE_P (elt)) |
43cacb12 RS |
19962 | return false; |
19963 | ||
19964 | r = *CONST_DOUBLE_REAL_VALUE (elt); | |
19965 | ||
19966 | if (negate_p) | |
19967 | r = real_value_negate (&r); | |
19968 | ||
19969 | if (real_equal (&r, &dconst1)) | |
19970 | return true; | |
19971 | if (real_equal (&r, &dconsthalf)) | |
19972 | return true; | |
19973 | return false; | |
19974 | } | |
19975 | ||
19976 | /* Return true if X is a valid immediate operand for an SVE FMUL | |
19977 | instruction. */ | |
19978 | ||
19979 | bool | |
19980 | aarch64_sve_float_mul_immediate_p (rtx x) | |
19981 | { | |
19982 | rtx elt; | |
19983 | ||
43cacb12 | 19984 | return (const_vec_duplicate_p (x, &elt) |
3793ecc1 | 19985 | && CONST_DOUBLE_P (elt) |
a19ba9e1 RS |
19986 | && (real_equal (CONST_DOUBLE_REAL_VALUE (elt), &dconsthalf) |
19987 | || real_equal (CONST_DOUBLE_REAL_VALUE (elt), &dconst2))); | |
43cacb12 RS |
19988 | } |
19989 | ||
b187677b RS |
19990 | /* Return true if replicating VAL32 is a valid 2-byte or 4-byte immediate |
19991 | for the Advanced SIMD operation described by WHICH and INSN. If INFO | |
19992 | is nonnull, use it to describe valid immediates. */ | |
3520f7cc | 19993 | static bool |
b187677b RS |
19994 | aarch64_advsimd_valid_immediate_hs (unsigned int val32, |
19995 | simd_immediate_info *info, | |
19996 | enum simd_immediate_check which, | |
19997 | simd_immediate_info::insn_type insn) | |
19998 | { | |
19999 | /* Try a 4-byte immediate with LSL. */ | |
20000 | for (unsigned int shift = 0; shift < 32; shift += 8) | |
20001 | if ((val32 & (0xff << shift)) == val32) | |
20002 | { | |
20003 | if (info) | |
20004 | *info = simd_immediate_info (SImode, val32 >> shift, insn, | |
20005 | simd_immediate_info::LSL, shift); | |
20006 | return true; | |
20007 | } | |
3520f7cc | 20008 | |
b187677b RS |
20009 | /* Try a 2-byte immediate with LSL. */ |
20010 | unsigned int imm16 = val32 & 0xffff; | |
20011 | if (imm16 == (val32 >> 16)) | |
20012 | for (unsigned int shift = 0; shift < 16; shift += 8) | |
20013 | if ((imm16 & (0xff << shift)) == imm16) | |
48063b9d | 20014 | { |
b187677b RS |
20015 | if (info) |
20016 | *info = simd_immediate_info (HImode, imm16 >> shift, insn, | |
20017 | simd_immediate_info::LSL, shift); | |
20018 | return true; | |
48063b9d | 20019 | } |
3520f7cc | 20020 | |
b187677b RS |
20021 | /* Try a 4-byte immediate with MSL, except for cases that MVN |
20022 | can handle. */ | |
20023 | if (which == AARCH64_CHECK_MOV) | |
20024 | for (unsigned int shift = 8; shift < 24; shift += 8) | |
20025 | { | |
20026 | unsigned int low = (1 << shift) - 1; | |
20027 | if (((val32 & (0xff << shift)) | low) == val32) | |
20028 | { | |
20029 | if (info) | |
20030 | *info = simd_immediate_info (SImode, val32 >> shift, insn, | |
20031 | simd_immediate_info::MSL, shift); | |
20032 | return true; | |
20033 | } | |
20034 | } | |
43e9d192 | 20035 | |
b187677b RS |
20036 | return false; |
20037 | } | |
20038 | ||
20039 | /* Return true if replicating VAL64 is a valid immediate for the | |
20040 | Advanced SIMD operation described by WHICH. If INFO is nonnull, | |
20041 | use it to describe valid immediates. */ | |
20042 | static bool | |
20043 | aarch64_advsimd_valid_immediate (unsigned HOST_WIDE_INT val64, | |
20044 | simd_immediate_info *info, | |
20045 | enum simd_immediate_check which) | |
20046 | { | |
20047 | unsigned int val32 = val64 & 0xffffffff; | |
20048 | unsigned int val16 = val64 & 0xffff; | |
20049 | unsigned int val8 = val64 & 0xff; | |
20050 | ||
20051 | if (val32 == (val64 >> 32)) | |
43e9d192 | 20052 | { |
b187677b RS |
20053 | if ((which & AARCH64_CHECK_ORR) != 0 |
20054 | && aarch64_advsimd_valid_immediate_hs (val32, info, which, | |
20055 | simd_immediate_info::MOV)) | |
20056 | return true; | |
43e9d192 | 20057 | |
b187677b RS |
20058 | if ((which & AARCH64_CHECK_BIC) != 0 |
20059 | && aarch64_advsimd_valid_immediate_hs (~val32, info, which, | |
20060 | simd_immediate_info::MVN)) | |
20061 | return true; | |
ee78df47 | 20062 | |
b187677b RS |
20063 | /* Try using a replicated byte. */ |
20064 | if (which == AARCH64_CHECK_MOV | |
20065 | && val16 == (val32 >> 16) | |
20066 | && val8 == (val16 >> 8)) | |
ee78df47 | 20067 | { |
b187677b RS |
20068 | if (info) |
20069 | *info = simd_immediate_info (QImode, val8); | |
20070 | return true; | |
ee78df47 | 20071 | } |
43e9d192 IB |
20072 | } |
20073 | ||
b187677b RS |
20074 | /* Try using a bit-to-bytemask. */ |
20075 | if (which == AARCH64_CHECK_MOV) | |
43e9d192 | 20076 | { |
b187677b RS |
20077 | unsigned int i; |
20078 | for (i = 0; i < 64; i += 8) | |
ab6501d7 | 20079 | { |
b187677b RS |
20080 | unsigned char byte = (val64 >> i) & 0xff; |
20081 | if (byte != 0 && byte != 0xff) | |
20082 | break; | |
ab6501d7 | 20083 | } |
b187677b | 20084 | if (i == 64) |
ab6501d7 | 20085 | { |
b187677b RS |
20086 | if (info) |
20087 | *info = simd_immediate_info (DImode, val64); | |
20088 | return true; | |
ab6501d7 | 20089 | } |
43e9d192 | 20090 | } |
b187677b RS |
20091 | return false; |
20092 | } | |
43e9d192 | 20093 | |
43cacb12 RS |
20094 | /* Return true if replicating VAL64 gives a valid immediate for an SVE MOV |
20095 | instruction. If INFO is nonnull, use it to describe valid immediates. */ | |
20096 | ||
20097 | static bool | |
20098 | aarch64_sve_valid_immediate (unsigned HOST_WIDE_INT val64, | |
20099 | simd_immediate_info *info) | |
20100 | { | |
20101 | scalar_int_mode mode = DImode; | |
20102 | unsigned int val32 = val64 & 0xffffffff; | |
20103 | if (val32 == (val64 >> 32)) | |
20104 | { | |
20105 | mode = SImode; | |
20106 | unsigned int val16 = val32 & 0xffff; | |
20107 | if (val16 == (val32 >> 16)) | |
20108 | { | |
20109 | mode = HImode; | |
20110 | unsigned int val8 = val16 & 0xff; | |
20111 | if (val8 == (val16 >> 8)) | |
20112 | mode = QImode; | |
20113 | } | |
20114 | } | |
20115 | HOST_WIDE_INT val = trunc_int_for_mode (val64, mode); | |
20116 | if (IN_RANGE (val, -0x80, 0x7f)) | |
20117 | { | |
20118 | /* DUP with no shift. */ | |
20119 | if (info) | |
20120 | *info = simd_immediate_info (mode, val); | |
20121 | return true; | |
20122 | } | |
20123 | if ((val & 0xff) == 0 && IN_RANGE (val, -0x8000, 0x7f00)) | |
20124 | { | |
20125 | /* DUP with LSL #8. */ | |
20126 | if (info) | |
20127 | *info = simd_immediate_info (mode, val); | |
20128 | return true; | |
20129 | } | |
20130 | if (aarch64_bitmask_imm (val64, mode)) | |
20131 | { | |
20132 | /* DUPM. */ | |
20133 | if (info) | |
20134 | *info = simd_immediate_info (mode, val); | |
20135 | return true; | |
20136 | } | |
20137 | return false; | |
20138 | } | |
20139 | ||
624d0f07 RS |
20140 | /* Return true if X is an UNSPEC_PTRUE constant of the form: |
20141 | ||
20142 | (const (unspec [PATTERN ZERO] UNSPEC_PTRUE)) | |
20143 | ||
20144 | where PATTERN is the svpattern as a CONST_INT and where ZERO | |
20145 | is a zero constant of the required PTRUE mode (which can have | |
20146 | fewer elements than X's mode, if zero bits are significant). | |
20147 | ||
20148 | If so, and if INFO is nonnull, describe the immediate in INFO. */ | |
20149 | bool | |
20150 | aarch64_sve_ptrue_svpattern_p (rtx x, struct simd_immediate_info *info) | |
20151 | { | |
20152 | if (GET_CODE (x) != CONST) | |
20153 | return false; | |
20154 | ||
20155 | x = XEXP (x, 0); | |
20156 | if (GET_CODE (x) != UNSPEC || XINT (x, 1) != UNSPEC_PTRUE) | |
20157 | return false; | |
20158 | ||
20159 | if (info) | |
20160 | { | |
20161 | aarch64_svpattern pattern | |
20162 | = (aarch64_svpattern) INTVAL (XVECEXP (x, 0, 0)); | |
20163 | machine_mode pred_mode = GET_MODE (XVECEXP (x, 0, 1)); | |
20164 | scalar_int_mode int_mode = aarch64_sve_element_int_mode (pred_mode); | |
20165 | *info = simd_immediate_info (int_mode, pattern); | |
20166 | } | |
20167 | return true; | |
20168 | } | |
20169 | ||
0b1fe8cf RS |
20170 | /* Return true if X is a valid SVE predicate. If INFO is nonnull, use |
20171 | it to describe valid immediates. */ | |
20172 | ||
20173 | static bool | |
20174 | aarch64_sve_pred_valid_immediate (rtx x, simd_immediate_info *info) | |
20175 | { | |
624d0f07 RS |
20176 | if (aarch64_sve_ptrue_svpattern_p (x, info)) |
20177 | return true; | |
20178 | ||
0b1fe8cf RS |
20179 | if (x == CONST0_RTX (GET_MODE (x))) |
20180 | { | |
20181 | if (info) | |
20182 | *info = simd_immediate_info (DImode, 0); | |
20183 | return true; | |
20184 | } | |
20185 | ||
20186 | /* Analyze the value as a VNx16BImode. This should be relatively | |
20187 | efficient, since rtx_vector_builder has enough built-in capacity | |
20188 | to store all VLA predicate constants without needing the heap. */ | |
20189 | rtx_vector_builder builder; | |
20190 | if (!aarch64_get_sve_pred_bits (builder, x)) | |
20191 | return false; | |
20192 | ||
20193 | unsigned int elt_size = aarch64_widest_sve_pred_elt_size (builder); | |
20194 | if (int vl = aarch64_partial_ptrue_length (builder, elt_size)) | |
20195 | { | |
20196 | machine_mode mode = aarch64_sve_pred_mode (elt_size).require (); | |
20197 | aarch64_svpattern pattern = aarch64_svpattern_for_vl (mode, vl); | |
20198 | if (pattern != AARCH64_NUM_SVPATTERNS) | |
20199 | { | |
20200 | if (info) | |
20201 | { | |
20202 | scalar_int_mode int_mode = aarch64_sve_element_int_mode (mode); | |
20203 | *info = simd_immediate_info (int_mode, pattern); | |
20204 | } | |
20205 | return true; | |
20206 | } | |
20207 | } | |
20208 | return false; | |
20209 | } | |
20210 | ||
b187677b RS |
20211 | /* Return true if OP is a valid SIMD immediate for the operation |
20212 | described by WHICH. If INFO is nonnull, use it to describe valid | |
20213 | immediates. */ | |
20214 | bool | |
20215 | aarch64_simd_valid_immediate (rtx op, simd_immediate_info *info, | |
20216 | enum simd_immediate_check which) | |
20217 | { | |
43cacb12 RS |
20218 | machine_mode mode = GET_MODE (op); |
20219 | unsigned int vec_flags = aarch64_classify_vector_mode (mode); | |
20220 | if (vec_flags == 0 || vec_flags == (VEC_ADVSIMD | VEC_STRUCT)) | |
20221 | return false; | |
20222 | ||
0b1fe8cf RS |
20223 | if (vec_flags & VEC_SVE_PRED) |
20224 | return aarch64_sve_pred_valid_immediate (op, info); | |
20225 | ||
43cacb12 | 20226 | scalar_mode elt_mode = GET_MODE_INNER (mode); |
f9093f23 | 20227 | rtx base, step; |
b187677b | 20228 | unsigned int n_elts; |
568b9c0e | 20229 | if (CONST_VECTOR_P (op) |
f9093f23 RS |
20230 | && CONST_VECTOR_DUPLICATE_P (op)) |
20231 | n_elts = CONST_VECTOR_NPATTERNS (op); | |
43cacb12 RS |
20232 | else if ((vec_flags & VEC_SVE_DATA) |
20233 | && const_vec_series_p (op, &base, &step)) | |
20234 | { | |
20235 | gcc_assert (GET_MODE_CLASS (mode) == MODE_VECTOR_INT); | |
20236 | if (!aarch64_sve_index_immediate_p (base) | |
20237 | || !aarch64_sve_index_immediate_p (step)) | |
20238 | return false; | |
20239 | ||
20240 | if (info) | |
cc68f7c2 RS |
20241 | { |
20242 | /* Get the corresponding container mode. E.g. an INDEX on V2SI | |
20243 | should yield two integer values per 128-bit block, meaning | |
20244 | that we need to treat it in the same way as V2DI and then | |
20245 | ignore the upper 32 bits of each element. */ | |
20246 | elt_mode = aarch64_sve_container_int_mode (mode); | |
20247 | *info = simd_immediate_info (elt_mode, base, step); | |
20248 | } | |
43cacb12 RS |
20249 | return true; |
20250 | } | |
568b9c0e | 20251 | else if (CONST_VECTOR_P (op) |
6a70badb RS |
20252 | && CONST_VECTOR_NUNITS (op).is_constant (&n_elts)) |
20253 | /* N_ELTS set above. */; | |
b187677b | 20254 | else |
d8edd899 | 20255 | return false; |
43e9d192 | 20256 | |
b187677b | 20257 | scalar_float_mode elt_float_mode; |
f9093f23 RS |
20258 | if (n_elts == 1 |
20259 | && is_a <scalar_float_mode> (elt_mode, &elt_float_mode)) | |
43e9d192 | 20260 | { |
f9093f23 RS |
20261 | rtx elt = CONST_VECTOR_ENCODED_ELT (op, 0); |
20262 | if (aarch64_float_const_zero_rtx_p (elt) | |
20263 | || aarch64_float_const_representable_p (elt)) | |
20264 | { | |
20265 | if (info) | |
20266 | *info = simd_immediate_info (elt_float_mode, elt); | |
20267 | return true; | |
20268 | } | |
b187677b | 20269 | } |
43e9d192 | 20270 | |
b23c6a2c RS |
20271 | /* If all elements in an SVE vector have the same value, we have a free |
20272 | choice between using the element mode and using the container mode. | |
20273 | Using the element mode means that unused parts of the vector are | |
20274 | duplicates of the used elements, while using the container mode means | |
20275 | that the unused parts are an extension of the used elements. Using the | |
20276 | element mode is better for (say) VNx4HI 0x101, since 0x01010101 is valid | |
20277 | for its container mode VNx4SI while 0x00000101 isn't. | |
20278 | ||
20279 | If not all elements in an SVE vector have the same value, we need the | |
20280 | transition from one element to the next to occur at container boundaries. | |
20281 | E.g. a fixed-length VNx4HI containing { 1, 2, 3, 4 } should be treated | |
20282 | in the same way as a VNx4SI containing { 1, 2, 3, 4 }. */ | |
20283 | scalar_int_mode elt_int_mode; | |
20284 | if ((vec_flags & VEC_SVE_DATA) && n_elts > 1) | |
20285 | elt_int_mode = aarch64_sve_container_int_mode (mode); | |
20286 | else | |
20287 | elt_int_mode = int_mode_for_mode (elt_mode).require (); | |
20288 | ||
20289 | unsigned int elt_size = GET_MODE_SIZE (elt_int_mode); | |
b187677b RS |
20290 | if (elt_size > 8) |
20291 | return false; | |
e4f0f84d | 20292 | |
b187677b RS |
20293 | /* Expand the vector constant out into a byte vector, with the least |
20294 | significant byte of the register first. */ | |
20295 | auto_vec<unsigned char, 16> bytes; | |
20296 | bytes.reserve (n_elts * elt_size); | |
20297 | for (unsigned int i = 0; i < n_elts; i++) | |
20298 | { | |
f9093f23 RS |
20299 | /* The vector is provided in gcc endian-neutral fashion. |
20300 | For aarch64_be Advanced SIMD, it must be laid out in the vector | |
20301 | register in reverse order. */ | |
20302 | bool swap_p = ((vec_flags & VEC_ADVSIMD) != 0 && BYTES_BIG_ENDIAN); | |
20303 | rtx elt = CONST_VECTOR_ELT (op, swap_p ? (n_elts - 1 - i) : i); | |
43e9d192 | 20304 | |
b187677b RS |
20305 | if (elt_mode != elt_int_mode) |
20306 | elt = gen_lowpart (elt_int_mode, elt); | |
43e9d192 | 20307 | |
b187677b RS |
20308 | if (!CONST_INT_P (elt)) |
20309 | return false; | |
43e9d192 | 20310 | |
b187677b RS |
20311 | unsigned HOST_WIDE_INT elt_val = INTVAL (elt); |
20312 | for (unsigned int byte = 0; byte < elt_size; byte++) | |
48063b9d | 20313 | { |
b187677b RS |
20314 | bytes.quick_push (elt_val & 0xff); |
20315 | elt_val >>= BITS_PER_UNIT; | |
48063b9d | 20316 | } |
43e9d192 IB |
20317 | } |
20318 | ||
b187677b RS |
20319 | /* The immediate must repeat every eight bytes. */ |
20320 | unsigned int nbytes = bytes.length (); | |
20321 | for (unsigned i = 8; i < nbytes; ++i) | |
20322 | if (bytes[i] != bytes[i - 8]) | |
20323 | return false; | |
20324 | ||
20325 | /* Get the repeating 8-byte value as an integer. No endian correction | |
20326 | is needed here because bytes is already in lsb-first order. */ | |
20327 | unsigned HOST_WIDE_INT val64 = 0; | |
20328 | for (unsigned int i = 0; i < 8; i++) | |
20329 | val64 |= ((unsigned HOST_WIDE_INT) bytes[i % nbytes] | |
20330 | << (i * BITS_PER_UNIT)); | |
20331 | ||
43cacb12 RS |
20332 | if (vec_flags & VEC_SVE_DATA) |
20333 | return aarch64_sve_valid_immediate (val64, info); | |
20334 | else | |
20335 | return aarch64_advsimd_valid_immediate (val64, info, which); | |
20336 | } | |
20337 | ||
20338 | /* Check whether X is a VEC_SERIES-like constant that starts at 0 and | |
20339 | has a step in the range of INDEX. Return the index expression if so, | |
20340 | otherwise return null. */ | |
20341 | rtx | |
20342 | aarch64_check_zero_based_sve_index_immediate (rtx x) | |
20343 | { | |
20344 | rtx base, step; | |
20345 | if (const_vec_series_p (x, &base, &step) | |
20346 | && base == const0_rtx | |
20347 | && aarch64_sve_index_immediate_p (step)) | |
20348 | return step; | |
20349 | return NULL_RTX; | |
43e9d192 IB |
20350 | } |
20351 | ||
43e9d192 IB |
20352 | /* Check of immediate shift constants are within range. */ |
20353 | bool | |
ef4bddc2 | 20354 | aarch64_simd_shift_imm_p (rtx x, machine_mode mode, bool left) |
43e9d192 | 20355 | { |
6bc67182 RS |
20356 | x = unwrap_const_vec_duplicate (x); |
20357 | if (!CONST_INT_P (x)) | |
20358 | return false; | |
43e9d192 IB |
20359 | int bit_width = GET_MODE_UNIT_SIZE (mode) * BITS_PER_UNIT; |
20360 | if (left) | |
6bc67182 | 20361 | return IN_RANGE (INTVAL (x), 0, bit_width - 1); |
43e9d192 | 20362 | else |
6bc67182 | 20363 | return IN_RANGE (INTVAL (x), 1, bit_width); |
43e9d192 IB |
20364 | } |
20365 | ||
7325d85a KT |
20366 | /* Return the bitmask CONST_INT to select the bits required by a zero extract |
20367 | operation of width WIDTH at bit position POS. */ | |
20368 | ||
20369 | rtx | |
20370 | aarch64_mask_from_zextract_ops (rtx width, rtx pos) | |
20371 | { | |
20372 | gcc_assert (CONST_INT_P (width)); | |
20373 | gcc_assert (CONST_INT_P (pos)); | |
20374 | ||
20375 | unsigned HOST_WIDE_INT mask | |
20376 | = ((unsigned HOST_WIDE_INT) 1 << UINTVAL (width)) - 1; | |
20377 | return GEN_INT (mask << UINTVAL (pos)); | |
20378 | } | |
20379 | ||
83f8c414 | 20380 | bool |
a6e0bfa7 | 20381 | aarch64_mov_operand_p (rtx x, machine_mode mode) |
83f8c414 | 20382 | { |
83f8c414 CSS |
20383 | if (GET_CODE (x) == HIGH |
20384 | && aarch64_valid_symref (XEXP (x, 0), GET_MODE (XEXP (x, 0)))) | |
20385 | return true; | |
20386 | ||
82614948 | 20387 | if (CONST_INT_P (x)) |
83f8c414 CSS |
20388 | return true; |
20389 | ||
43cacb12 | 20390 | if (VECTOR_MODE_P (GET_MODE (x))) |
678faefc RS |
20391 | { |
20392 | /* Require predicate constants to be VNx16BI before RA, so that we | |
20393 | force everything to have a canonical form. */ | |
20394 | if (!lra_in_progress | |
20395 | && !reload_completed | |
20396 | && GET_MODE_CLASS (GET_MODE (x)) == MODE_VECTOR_BOOL | |
20397 | && GET_MODE (x) != VNx16BImode) | |
20398 | return false; | |
20399 | ||
20400 | return aarch64_simd_valid_immediate (x, NULL); | |
20401 | } | |
43cacb12 | 20402 | |
b33b2678 WD |
20403 | /* Remove UNSPEC_SALT_ADDR before checking symbol reference. */ |
20404 | x = strip_salt (x); | |
20405 | ||
a195c727 WD |
20406 | /* GOT accesses are valid moves. */ |
20407 | if (SYMBOL_REF_P (x) | |
20408 | && aarch64_classify_symbolic_expression (x) == SYMBOL_SMALL_GOT_4G) | |
20409 | return true; | |
20410 | ||
3793ecc1 | 20411 | if (SYMBOL_REF_P (x) && mode == DImode && CONSTANT_ADDRESS_P (x)) |
83f8c414 CSS |
20412 | return true; |
20413 | ||
c0e0174b | 20414 | if (TARGET_SVE && aarch64_sve_cnt_immediate_p (x)) |
43cacb12 RS |
20415 | return true; |
20416 | ||
a6e0bfa7 | 20417 | return aarch64_classify_symbolic_expression (x) |
a5350ddc | 20418 | == SYMBOL_TINY_ABSOLUTE; |
83f8c414 CSS |
20419 | } |
20420 | ||
9b8830b6 TC |
20421 | /* Create a 0 constant that is based on V4SI to allow CSE to optimally share |
20422 | the constant creation. */ | |
20423 | ||
20424 | rtx | |
20425 | aarch64_gen_shareable_zero (machine_mode mode) | |
20426 | { | |
20427 | machine_mode zmode = V4SImode; | |
20428 | rtx tmp = gen_reg_rtx (zmode); | |
20429 | emit_move_insn (tmp, CONST0_RTX (zmode)); | |
20430 | return lowpart_subreg (mode, tmp, zmode); | |
20431 | } | |
20432 | ||
43e9d192 IB |
20433 | /* Return a const_int vector of VAL. */ |
20434 | rtx | |
ab014eb3 | 20435 | aarch64_simd_gen_const_vector_dup (machine_mode mode, HOST_WIDE_INT val) |
43e9d192 | 20436 | { |
59d06c05 RS |
20437 | rtx c = gen_int_mode (val, GET_MODE_INNER (mode)); |
20438 | return gen_const_vec_duplicate (mode, c); | |
43e9d192 IB |
20439 | } |
20440 | ||
051d0e2f SN |
20441 | /* Check OP is a legal scalar immediate for the MOVI instruction. */ |
20442 | ||
20443 | bool | |
77e994c9 | 20444 | aarch64_simd_scalar_immediate_valid_for_move (rtx op, scalar_int_mode mode) |
051d0e2f | 20445 | { |
ef4bddc2 | 20446 | machine_mode vmode; |
051d0e2f | 20447 | |
43cacb12 | 20448 | vmode = aarch64_simd_container_mode (mode, 64); |
051d0e2f | 20449 | rtx op_v = aarch64_simd_gen_const_vector_dup (vmode, INTVAL (op)); |
b187677b | 20450 | return aarch64_simd_valid_immediate (op_v, NULL); |
051d0e2f SN |
20451 | } |
20452 | ||
988fa693 JG |
20453 | /* Construct and return a PARALLEL RTX vector with elements numbering the |
20454 | lanes of either the high (HIGH == TRUE) or low (HIGH == FALSE) half of | |
20455 | the vector - from the perspective of the architecture. This does not | |
20456 | line up with GCC's perspective on lane numbers, so we end up with | |
20457 | different masks depending on our target endian-ness. The diagram | |
20458 | below may help. We must draw the distinction when building masks | |
20459 | which select one half of the vector. An instruction selecting | |
20460 | architectural low-lanes for a big-endian target, must be described using | |
20461 | a mask selecting GCC high-lanes. | |
20462 | ||
20463 | Big-Endian Little-Endian | |
20464 | ||
20465 | GCC 0 1 2 3 3 2 1 0 | |
20466 | | x | x | x | x | | x | x | x | x | | |
20467 | Architecture 3 2 1 0 3 2 1 0 | |
20468 | ||
20469 | Low Mask: { 2, 3 } { 0, 1 } | |
20470 | High Mask: { 0, 1 } { 2, 3 } | |
f5cbabc1 RS |
20471 | |
20472 | MODE Is the mode of the vector and NUNITS is the number of units in it. */ | |
988fa693 | 20473 | |
43e9d192 | 20474 | rtx |
f5cbabc1 | 20475 | aarch64_simd_vect_par_cnst_half (machine_mode mode, int nunits, bool high) |
43e9d192 | 20476 | { |
43e9d192 | 20477 | rtvec v = rtvec_alloc (nunits / 2); |
988fa693 JG |
20478 | int high_base = nunits / 2; |
20479 | int low_base = 0; | |
20480 | int base; | |
43e9d192 IB |
20481 | rtx t1; |
20482 | int i; | |
20483 | ||
988fa693 JG |
20484 | if (BYTES_BIG_ENDIAN) |
20485 | base = high ? low_base : high_base; | |
20486 | else | |
20487 | base = high ? high_base : low_base; | |
20488 | ||
20489 | for (i = 0; i < nunits / 2; i++) | |
43e9d192 IB |
20490 | RTVEC_ELT (v, i) = GEN_INT (base + i); |
20491 | ||
20492 | t1 = gen_rtx_PARALLEL (mode, v); | |
20493 | return t1; | |
20494 | } | |
20495 | ||
988fa693 JG |
20496 | /* Check OP for validity as a PARALLEL RTX vector with elements |
20497 | numbering the lanes of either the high (HIGH == TRUE) or low lanes, | |
20498 | from the perspective of the architecture. See the diagram above | |
20499 | aarch64_simd_vect_par_cnst_half for more details. */ | |
20500 | ||
20501 | bool | |
ef4bddc2 | 20502 | aarch64_simd_check_vect_par_cnst_half (rtx op, machine_mode mode, |
988fa693 JG |
20503 | bool high) |
20504 | { | |
6a70badb RS |
20505 | int nelts; |
20506 | if (!VECTOR_MODE_P (mode) || !GET_MODE_NUNITS (mode).is_constant (&nelts)) | |
f5cbabc1 RS |
20507 | return false; |
20508 | ||
6a70badb | 20509 | rtx ideal = aarch64_simd_vect_par_cnst_half (mode, nelts, high); |
988fa693 JG |
20510 | HOST_WIDE_INT count_op = XVECLEN (op, 0); |
20511 | HOST_WIDE_INT count_ideal = XVECLEN (ideal, 0); | |
20512 | int i = 0; | |
20513 | ||
988fa693 JG |
20514 | if (count_op != count_ideal) |
20515 | return false; | |
20516 | ||
20517 | for (i = 0; i < count_ideal; i++) | |
20518 | { | |
20519 | rtx elt_op = XVECEXP (op, 0, i); | |
20520 | rtx elt_ideal = XVECEXP (ideal, 0, i); | |
20521 | ||
4aa81c2e | 20522 | if (!CONST_INT_P (elt_op) |
988fa693 JG |
20523 | || INTVAL (elt_ideal) != INTVAL (elt_op)) |
20524 | return false; | |
20525 | } | |
20526 | return true; | |
20527 | } | |
20528 | ||
4aeb1ba7 RS |
20529 | /* Return a PARALLEL containing NELTS elements, with element I equal |
20530 | to BASE + I * STEP. */ | |
20531 | ||
20532 | rtx | |
20533 | aarch64_gen_stepped_int_parallel (unsigned int nelts, int base, int step) | |
20534 | { | |
20535 | rtvec vec = rtvec_alloc (nelts); | |
20536 | for (unsigned int i = 0; i < nelts; ++i) | |
20537 | RTVEC_ELT (vec, i) = gen_int_mode (base + i * step, DImode); | |
20538 | return gen_rtx_PARALLEL (VOIDmode, vec); | |
20539 | } | |
20540 | ||
20541 | /* Return true if OP is a PARALLEL of CONST_INTs that form a linear | |
20542 | series with step STEP. */ | |
20543 | ||
20544 | bool | |
20545 | aarch64_stepped_int_parallel_p (rtx op, int step) | |
20546 | { | |
20547 | if (GET_CODE (op) != PARALLEL || !CONST_INT_P (XVECEXP (op, 0, 0))) | |
20548 | return false; | |
20549 | ||
20550 | unsigned HOST_WIDE_INT base = UINTVAL (XVECEXP (op, 0, 0)); | |
20551 | for (int i = 1; i < XVECLEN (op, 0); ++i) | |
20552 | if (!CONST_INT_P (XVECEXP (op, 0, i)) | |
20553 | || UINTVAL (XVECEXP (op, 0, i)) != base + i * step) | |
20554 | return false; | |
20555 | ||
20556 | return true; | |
20557 | } | |
20558 | ||
43e9d192 IB |
20559 | /* Bounds-check lanes. Ensure OPERAND lies between LOW (inclusive) and |
20560 | HIGH (exclusive). */ | |
20561 | void | |
46ed6024 CB |
20562 | aarch64_simd_lane_bounds (rtx operand, HOST_WIDE_INT low, HOST_WIDE_INT high, |
20563 | const_tree exp) | |
43e9d192 IB |
20564 | { |
20565 | HOST_WIDE_INT lane; | |
4aa81c2e | 20566 | gcc_assert (CONST_INT_P (operand)); |
43e9d192 IB |
20567 | lane = INTVAL (operand); |
20568 | ||
20569 | if (lane < low || lane >= high) | |
46ed6024 CB |
20570 | { |
20571 | if (exp) | |
06357071 MS |
20572 | error_at (EXPR_LOCATION (exp), "lane %wd out of range %wd - %wd", |
20573 | lane, low, high - 1); | |
46ed6024 | 20574 | else |
cf0c27ef | 20575 | error ("lane %wd out of range %wd - %wd", lane, low, high - 1); |
46ed6024 | 20576 | } |
43e9d192 IB |
20577 | } |
20578 | ||
7ac29c0f RS |
20579 | /* Peform endian correction on lane number N, which indexes a vector |
20580 | of mode MODE, and return the result as an SImode rtx. */ | |
20581 | ||
20582 | rtx | |
20583 | aarch64_endian_lane_rtx (machine_mode mode, unsigned int n) | |
20584 | { | |
20585 | return gen_int_mode (ENDIAN_LANE_N (GET_MODE_NUNITS (mode), n), SImode); | |
20586 | } | |
20587 | ||
43e9d192 | 20588 | /* Return TRUE if OP is a valid vector addressing mode. */ |
43cacb12 | 20589 | |
43e9d192 IB |
20590 | bool |
20591 | aarch64_simd_mem_operand_p (rtx op) | |
20592 | { | |
20593 | return MEM_P (op) && (GET_CODE (XEXP (op, 0)) == POST_INC | |
4aa81c2e | 20594 | || REG_P (XEXP (op, 0))); |
43e9d192 IB |
20595 | } |
20596 | ||
43cacb12 RS |
20597 | /* Return true if OP is a valid MEM operand for an SVE LD1R instruction. */ |
20598 | ||
20599 | bool | |
20600 | aarch64_sve_ld1r_operand_p (rtx op) | |
20601 | { | |
20602 | struct aarch64_address_info addr; | |
20603 | scalar_mode mode; | |
20604 | ||
20605 | return (MEM_P (op) | |
20606 | && is_a <scalar_mode> (GET_MODE (op), &mode) | |
20607 | && aarch64_classify_address (&addr, XEXP (op, 0), mode, false) | |
20608 | && addr.type == ADDRESS_REG_IMM | |
20609 | && offset_6bit_unsigned_scaled_p (mode, addr.const_offset)); | |
20610 | } | |
20611 | ||
9ceec73f MM |
20612 | /* Return true if OP is a valid MEM operand for an SVE LD1R{Q,O} instruction |
20613 | where the size of the read data is specified by `mode` and the size of the | |
20614 | vector elements are specified by `elem_mode`. */ | |
4aeb1ba7 | 20615 | bool |
9ceec73f MM |
20616 | aarch64_sve_ld1rq_ld1ro_operand_p (rtx op, machine_mode mode, |
20617 | scalar_mode elem_mode) | |
4aeb1ba7 RS |
20618 | { |
20619 | struct aarch64_address_info addr; | |
4aeb1ba7 RS |
20620 | if (!MEM_P (op) |
20621 | || !aarch64_classify_address (&addr, XEXP (op, 0), elem_mode, false)) | |
20622 | return false; | |
20623 | ||
20624 | if (addr.type == ADDRESS_REG_IMM) | |
9ceec73f | 20625 | return offset_4bit_signed_scaled_p (mode, addr.const_offset); |
4aeb1ba7 RS |
20626 | |
20627 | if (addr.type == ADDRESS_REG_REG) | |
20628 | return (1U << addr.shift) == GET_MODE_SIZE (elem_mode); | |
20629 | ||
20630 | return false; | |
20631 | } | |
20632 | ||
9ceec73f MM |
20633 | /* Return true if OP is a valid MEM operand for an SVE LD1RQ instruction. */ |
20634 | bool | |
20635 | aarch64_sve_ld1rq_operand_p (rtx op) | |
20636 | { | |
20637 | return aarch64_sve_ld1rq_ld1ro_operand_p (op, TImode, | |
20638 | GET_MODE_INNER (GET_MODE (op))); | |
20639 | } | |
20640 | ||
20641 | /* Return true if OP is a valid MEM operand for an SVE LD1RO instruction for | |
20642 | accessing a vector where the element size is specified by `elem_mode`. */ | |
20643 | bool | |
20644 | aarch64_sve_ld1ro_operand_p (rtx op, scalar_mode elem_mode) | |
20645 | { | |
20646 | return aarch64_sve_ld1rq_ld1ro_operand_p (op, OImode, elem_mode); | |
20647 | } | |
20648 | ||
624d0f07 RS |
20649 | /* Return true if OP is a valid MEM operand for an SVE LDFF1 instruction. */ |
20650 | bool | |
20651 | aarch64_sve_ldff1_operand_p (rtx op) | |
20652 | { | |
20653 | if (!MEM_P (op)) | |
20654 | return false; | |
20655 | ||
20656 | struct aarch64_address_info addr; | |
20657 | if (!aarch64_classify_address (&addr, XEXP (op, 0), GET_MODE (op), false)) | |
20658 | return false; | |
20659 | ||
20660 | if (addr.type == ADDRESS_REG_IMM) | |
20661 | return known_eq (addr.const_offset, 0); | |
20662 | ||
20663 | return addr.type == ADDRESS_REG_REG; | |
20664 | } | |
20665 | ||
20666 | /* Return true if OP is a valid MEM operand for an SVE LDNF1 instruction. */ | |
20667 | bool | |
20668 | aarch64_sve_ldnf1_operand_p (rtx op) | |
20669 | { | |
20670 | struct aarch64_address_info addr; | |
20671 | ||
20672 | return (MEM_P (op) | |
20673 | && aarch64_classify_address (&addr, XEXP (op, 0), | |
20674 | GET_MODE (op), false) | |
20675 | && addr.type == ADDRESS_REG_IMM); | |
20676 | } | |
20677 | ||
43cacb12 RS |
20678 | /* Return true if OP is a valid MEM operand for an SVE LDR instruction. |
20679 | The conditions for STR are the same. */ | |
20680 | bool | |
20681 | aarch64_sve_ldr_operand_p (rtx op) | |
20682 | { | |
20683 | struct aarch64_address_info addr; | |
20684 | ||
20685 | return (MEM_P (op) | |
20686 | && aarch64_classify_address (&addr, XEXP (op, 0), GET_MODE (op), | |
20687 | false, ADDR_QUERY_ANY) | |
20688 | && addr.type == ADDRESS_REG_IMM); | |
20689 | } | |
20690 | ||
624d0f07 RS |
20691 | /* Return true if OP is a valid address for an SVE PRF[BHWD] instruction, |
20692 | addressing memory of mode MODE. */ | |
20693 | bool | |
20694 | aarch64_sve_prefetch_operand_p (rtx op, machine_mode mode) | |
20695 | { | |
20696 | struct aarch64_address_info addr; | |
ba15b0fa | 20697 | if (!aarch64_classify_address (&addr, op, mode, false, ADDR_QUERY_ANY)) |
624d0f07 RS |
20698 | return false; |
20699 | ||
20700 | if (addr.type == ADDRESS_REG_IMM) | |
ba15b0fa | 20701 | return offset_6bit_signed_scaled_p (mode, addr.const_offset); |
624d0f07 RS |
20702 | |
20703 | return addr.type == ADDRESS_REG_REG; | |
20704 | } | |
20705 | ||
9f4cbab8 RS |
20706 | /* Return true if OP is a valid MEM operand for an SVE_STRUCT mode. |
20707 | We need to be able to access the individual pieces, so the range | |
20708 | is different from LD[234] and ST[234]. */ | |
20709 | bool | |
20710 | aarch64_sve_struct_memory_operand_p (rtx op) | |
20711 | { | |
20712 | if (!MEM_P (op)) | |
20713 | return false; | |
20714 | ||
20715 | machine_mode mode = GET_MODE (op); | |
20716 | struct aarch64_address_info addr; | |
20717 | if (!aarch64_classify_address (&addr, XEXP (op, 0), SVE_BYTE_MODE, false, | |
20718 | ADDR_QUERY_ANY) | |
20719 | || addr.type != ADDRESS_REG_IMM) | |
20720 | return false; | |
20721 | ||
20722 | poly_int64 first = addr.const_offset; | |
20723 | poly_int64 last = first + GET_MODE_SIZE (mode) - BYTES_PER_SVE_VECTOR; | |
20724 | return (offset_4bit_signed_scaled_p (SVE_BYTE_MODE, first) | |
20725 | && offset_4bit_signed_scaled_p (SVE_BYTE_MODE, last)); | |
20726 | } | |
20727 | ||
2d8c6dc1 AH |
20728 | /* Emit a register copy from operand to operand, taking care not to |
20729 | early-clobber source registers in the process. | |
43e9d192 | 20730 | |
2d8c6dc1 AH |
20731 | COUNT is the number of components into which the copy needs to be |
20732 | decomposed. */ | |
43e9d192 | 20733 | void |
b8506a8a | 20734 | aarch64_simd_emit_reg_reg_move (rtx *operands, machine_mode mode, |
2d8c6dc1 | 20735 | unsigned int count) |
43e9d192 IB |
20736 | { |
20737 | unsigned int i; | |
2d8c6dc1 AH |
20738 | int rdest = REGNO (operands[0]); |
20739 | int rsrc = REGNO (operands[1]); | |
43e9d192 IB |
20740 | |
20741 | if (!reg_overlap_mentioned_p (operands[0], operands[1]) | |
2d8c6dc1 AH |
20742 | || rdest < rsrc) |
20743 | for (i = 0; i < count; i++) | |
20744 | emit_move_insn (gen_rtx_REG (mode, rdest + i), | |
20745 | gen_rtx_REG (mode, rsrc + i)); | |
43e9d192 | 20746 | else |
2d8c6dc1 AH |
20747 | for (i = 0; i < count; i++) |
20748 | emit_move_insn (gen_rtx_REG (mode, rdest + count - i - 1), | |
20749 | gen_rtx_REG (mode, rsrc + count - i - 1)); | |
43e9d192 IB |
20750 | } |
20751 | ||
668046d1 | 20752 | /* Compute and return the length of aarch64_simd_reglist<mode>, where <mode> is |
6ec0e5b9 | 20753 | one of VSTRUCT modes: OI, CI, or XI. */ |
668046d1 | 20754 | int |
b8506a8a | 20755 | aarch64_simd_attr_length_rglist (machine_mode mode) |
668046d1 | 20756 | { |
6a70badb RS |
20757 | /* This is only used (and only meaningful) for Advanced SIMD, not SVE. */ |
20758 | return (GET_MODE_SIZE (mode).to_constant () / UNITS_PER_VREG) * 4; | |
668046d1 DS |
20759 | } |
20760 | ||
db0253a4 | 20761 | /* Implement target hook TARGET_VECTOR_ALIGNMENT. The AAPCS64 sets the maximum |
43cacb12 RS |
20762 | alignment of a vector to 128 bits. SVE predicates have an alignment of |
20763 | 16 bits. */ | |
db0253a4 TB |
20764 | static HOST_WIDE_INT |
20765 | aarch64_simd_vector_alignment (const_tree type) | |
20766 | { | |
07108a9e RS |
20767 | /* ??? Checking the mode isn't ideal, but VECTOR_BOOLEAN_TYPE_P can |
20768 | be set for non-predicate vectors of booleans. Modes are the most | |
20769 | direct way we have of identifying real SVE predicate types. */ | |
20770 | if (GET_MODE_CLASS (TYPE_MODE (type)) == MODE_VECTOR_BOOL) | |
20771 | return 16; | |
cc68f7c2 RS |
20772 | widest_int min_size |
20773 | = constant_lower_bound (wi::to_poly_widest (TYPE_SIZE (type))); | |
20774 | return wi::umin (min_size, 128).to_uhwi (); | |
db0253a4 TB |
20775 | } |
20776 | ||
43cacb12 | 20777 | /* Implement target hook TARGET_VECTORIZE_PREFERRED_VECTOR_ALIGNMENT. */ |
ca31798e | 20778 | static poly_uint64 |
43cacb12 RS |
20779 | aarch64_vectorize_preferred_vector_alignment (const_tree type) |
20780 | { | |
20781 | if (aarch64_sve_data_mode_p (TYPE_MODE (type))) | |
20782 | { | |
1393938e RS |
20783 | /* If the length of the vector is a fixed power of 2, try to align |
20784 | to that length, otherwise don't try to align at all. */ | |
43cacb12 | 20785 | HOST_WIDE_INT result; |
1393938e RS |
20786 | if (!GET_MODE_BITSIZE (TYPE_MODE (type)).is_constant (&result) |
20787 | || !pow2p_hwi (result)) | |
43cacb12 RS |
20788 | result = TYPE_ALIGN (TREE_TYPE (type)); |
20789 | return result; | |
20790 | } | |
20791 | return TYPE_ALIGN (type); | |
20792 | } | |
20793 | ||
db0253a4 TB |
20794 | /* Implement target hook TARGET_VECTORIZE_VECTOR_ALIGNMENT_REACHABLE. */ |
20795 | static bool | |
20796 | aarch64_simd_vector_alignment_reachable (const_tree type, bool is_packed) | |
20797 | { | |
20798 | if (is_packed) | |
20799 | return false; | |
20800 | ||
43cacb12 RS |
20801 | /* For fixed-length vectors, check that the vectorizer will aim for |
20802 | full-vector alignment. This isn't true for generic GCC vectors | |
20803 | that are wider than the ABI maximum of 128 bits. */ | |
ca31798e AV |
20804 | poly_uint64 preferred_alignment = |
20805 | aarch64_vectorize_preferred_vector_alignment (type); | |
43cacb12 | 20806 | if (TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST |
ca31798e AV |
20807 | && maybe_ne (wi::to_widest (TYPE_SIZE (type)), |
20808 | preferred_alignment)) | |
db0253a4 TB |
20809 | return false; |
20810 | ||
20811 | /* Vectors whose size is <= BIGGEST_ALIGNMENT are naturally aligned. */ | |
20812 | return true; | |
20813 | } | |
20814 | ||
7df76747 N |
20815 | /* Return true if the vector misalignment factor is supported by the |
20816 | target. */ | |
20817 | static bool | |
20818 | aarch64_builtin_support_vector_misalignment (machine_mode mode, | |
20819 | const_tree type, int misalignment, | |
20820 | bool is_packed) | |
20821 | { | |
20822 | if (TARGET_SIMD && STRICT_ALIGNMENT) | |
20823 | { | |
20824 | /* Return if movmisalign pattern is not supported for this mode. */ | |
20825 | if (optab_handler (movmisalign_optab, mode) == CODE_FOR_nothing) | |
20826 | return false; | |
20827 | ||
a509c571 | 20828 | /* Misalignment factor is unknown at compile time. */ |
7df76747 | 20829 | if (misalignment == -1) |
a509c571 | 20830 | return false; |
7df76747 N |
20831 | } |
20832 | return default_builtin_support_vector_misalignment (mode, type, misalignment, | |
20833 | is_packed); | |
20834 | } | |
20835 | ||
4369c11e TB |
20836 | /* If VALS is a vector constant that can be loaded into a register |
20837 | using DUP, generate instructions to do so and return an RTX to | |
20838 | assign to the register. Otherwise return NULL_RTX. */ | |
20839 | static rtx | |
20840 | aarch64_simd_dup_constant (rtx vals) | |
20841 | { | |
ef4bddc2 RS |
20842 | machine_mode mode = GET_MODE (vals); |
20843 | machine_mode inner_mode = GET_MODE_INNER (mode); | |
4369c11e | 20844 | rtx x; |
4369c11e | 20845 | |
92695fbb | 20846 | if (!const_vec_duplicate_p (vals, &x)) |
4369c11e TB |
20847 | return NULL_RTX; |
20848 | ||
20849 | /* We can load this constant by using DUP and a constant in a | |
20850 | single ARM register. This will be cheaper than a vector | |
20851 | load. */ | |
92695fbb | 20852 | x = copy_to_mode_reg (inner_mode, x); |
59d06c05 | 20853 | return gen_vec_duplicate (mode, x); |
4369c11e TB |
20854 | } |
20855 | ||
20856 | ||
20857 | /* Generate code to load VALS, which is a PARALLEL containing only | |
20858 | constants (for vec_init) or CONST_VECTOR, efficiently into a | |
20859 | register. Returns an RTX to copy into the register, or NULL_RTX | |
67914693 | 20860 | for a PARALLEL that cannot be converted into a CONST_VECTOR. */ |
1df3f464 | 20861 | static rtx |
4369c11e TB |
20862 | aarch64_simd_make_constant (rtx vals) |
20863 | { | |
ef4bddc2 | 20864 | machine_mode mode = GET_MODE (vals); |
4369c11e TB |
20865 | rtx const_dup; |
20866 | rtx const_vec = NULL_RTX; | |
4369c11e TB |
20867 | int n_const = 0; |
20868 | int i; | |
20869 | ||
568b9c0e | 20870 | if (CONST_VECTOR_P (vals)) |
4369c11e TB |
20871 | const_vec = vals; |
20872 | else if (GET_CODE (vals) == PARALLEL) | |
20873 | { | |
20874 | /* A CONST_VECTOR must contain only CONST_INTs and | |
20875 | CONST_DOUBLEs, but CONSTANT_P allows more (e.g. SYMBOL_REF). | |
20876 | Only store valid constants in a CONST_VECTOR. */ | |
6a70badb | 20877 | int n_elts = XVECLEN (vals, 0); |
4369c11e TB |
20878 | for (i = 0; i < n_elts; ++i) |
20879 | { | |
20880 | rtx x = XVECEXP (vals, 0, i); | |
20881 | if (CONST_INT_P (x) || CONST_DOUBLE_P (x)) | |
20882 | n_const++; | |
20883 | } | |
20884 | if (n_const == n_elts) | |
20885 | const_vec = gen_rtx_CONST_VECTOR (mode, XVEC (vals, 0)); | |
20886 | } | |
20887 | else | |
20888 | gcc_unreachable (); | |
20889 | ||
20890 | if (const_vec != NULL_RTX | |
b187677b | 20891 | && aarch64_simd_valid_immediate (const_vec, NULL)) |
4369c11e TB |
20892 | /* Load using MOVI/MVNI. */ |
20893 | return const_vec; | |
20894 | else if ((const_dup = aarch64_simd_dup_constant (vals)) != NULL_RTX) | |
20895 | /* Loaded using DUP. */ | |
20896 | return const_dup; | |
20897 | else if (const_vec != NULL_RTX) | |
67914693 | 20898 | /* Load from constant pool. We cannot take advantage of single-cycle |
4369c11e TB |
20899 | LD1 because we need a PC-relative addressing mode. */ |
20900 | return const_vec; | |
20901 | else | |
20902 | /* A PARALLEL containing something not valid inside CONST_VECTOR. | |
67914693 | 20903 | We cannot construct an initializer. */ |
4369c11e TB |
20904 | return NULL_RTX; |
20905 | } | |
20906 | ||
35a093b6 JG |
20907 | /* Expand a vector initialisation sequence, such that TARGET is |
20908 | initialised to contain VALS. */ | |
20909 | ||
4369c11e TB |
20910 | void |
20911 | aarch64_expand_vector_init (rtx target, rtx vals) | |
20912 | { | |
ef4bddc2 | 20913 | machine_mode mode = GET_MODE (target); |
146c2e3a | 20914 | scalar_mode inner_mode = GET_MODE_INNER (mode); |
35a093b6 | 20915 | /* The number of vector elements. */ |
6a70badb | 20916 | int n_elts = XVECLEN (vals, 0); |
35a093b6 | 20917 | /* The number of vector elements which are not constant. */ |
8b66a2d4 AL |
20918 | int n_var = 0; |
20919 | rtx any_const = NULL_RTX; | |
35a093b6 JG |
20920 | /* The first element of vals. */ |
20921 | rtx v0 = XVECEXP (vals, 0, 0); | |
4369c11e | 20922 | bool all_same = true; |
4369c11e | 20923 | |
41dab855 KT |
20924 | /* This is a special vec_init<M><N> where N is not an element mode but a |
20925 | vector mode with half the elements of M. We expect to find two entries | |
20926 | of mode N in VALS and we must put their concatentation into TARGET. */ | |
20927 | if (XVECLEN (vals, 0) == 2 && VECTOR_MODE_P (GET_MODE (XVECEXP (vals, 0, 0)))) | |
20928 | { | |
20929 | gcc_assert (known_eq (GET_MODE_SIZE (mode), | |
20930 | 2 * GET_MODE_SIZE (GET_MODE (XVECEXP (vals, 0, 0))))); | |
20931 | rtx lo = XVECEXP (vals, 0, 0); | |
20932 | rtx hi = XVECEXP (vals, 0, 1); | |
20933 | machine_mode narrow_mode = GET_MODE (lo); | |
20934 | gcc_assert (GET_MODE_INNER (narrow_mode) == inner_mode); | |
20935 | gcc_assert (narrow_mode == GET_MODE (hi)); | |
20936 | ||
20937 | /* When we want to concatenate a half-width vector with zeroes we can | |
20938 | use the aarch64_combinez[_be] patterns. Just make sure that the | |
20939 | zeroes are in the right half. */ | |
20940 | if (BYTES_BIG_ENDIAN | |
20941 | && aarch64_simd_imm_zero (lo, narrow_mode) | |
20942 | && general_operand (hi, narrow_mode)) | |
20943 | emit_insn (gen_aarch64_combinez_be (narrow_mode, target, hi, lo)); | |
20944 | else if (!BYTES_BIG_ENDIAN | |
20945 | && aarch64_simd_imm_zero (hi, narrow_mode) | |
20946 | && general_operand (lo, narrow_mode)) | |
20947 | emit_insn (gen_aarch64_combinez (narrow_mode, target, lo, hi)); | |
20948 | else | |
20949 | { | |
20950 | /* Else create the two half-width registers and combine them. */ | |
20951 | if (!REG_P (lo)) | |
20952 | lo = force_reg (GET_MODE (lo), lo); | |
20953 | if (!REG_P (hi)) | |
20954 | hi = force_reg (GET_MODE (hi), hi); | |
20955 | ||
20956 | if (BYTES_BIG_ENDIAN) | |
20957 | std::swap (lo, hi); | |
20958 | emit_insn (gen_aarch64_simd_combine (narrow_mode, target, lo, hi)); | |
20959 | } | |
20960 | return; | |
20961 | } | |
20962 | ||
35a093b6 | 20963 | /* Count the number of variable elements to initialise. */ |
8b66a2d4 | 20964 | for (int i = 0; i < n_elts; ++i) |
4369c11e | 20965 | { |
8b66a2d4 | 20966 | rtx x = XVECEXP (vals, 0, i); |
35a093b6 | 20967 | if (!(CONST_INT_P (x) || CONST_DOUBLE_P (x))) |
8b66a2d4 AL |
20968 | ++n_var; |
20969 | else | |
20970 | any_const = x; | |
4369c11e | 20971 | |
35a093b6 | 20972 | all_same &= rtx_equal_p (x, v0); |
4369c11e TB |
20973 | } |
20974 | ||
35a093b6 JG |
20975 | /* No variable elements, hand off to aarch64_simd_make_constant which knows |
20976 | how best to handle this. */ | |
4369c11e TB |
20977 | if (n_var == 0) |
20978 | { | |
20979 | rtx constant = aarch64_simd_make_constant (vals); | |
20980 | if (constant != NULL_RTX) | |
20981 | { | |
20982 | emit_move_insn (target, constant); | |
20983 | return; | |
20984 | } | |
20985 | } | |
20986 | ||
20987 | /* Splat a single non-constant element if we can. */ | |
20988 | if (all_same) | |
20989 | { | |
35a093b6 | 20990 | rtx x = copy_to_mode_reg (inner_mode, v0); |
59d06c05 | 20991 | aarch64_emit_move (target, gen_vec_duplicate (mode, x)); |
4369c11e TB |
20992 | return; |
20993 | } | |
20994 | ||
85c1b6d7 AP |
20995 | enum insn_code icode = optab_handler (vec_set_optab, mode); |
20996 | gcc_assert (icode != CODE_FOR_nothing); | |
20997 | ||
20998 | /* If there are only variable elements, try to optimize | |
20999 | the insertion using dup for the most common element | |
21000 | followed by insertions. */ | |
21001 | ||
21002 | /* The algorithm will fill matches[*][0] with the earliest matching element, | |
21003 | and matches[X][1] with the count of duplicate elements (if X is the | |
21004 | earliest element which has duplicates). */ | |
21005 | ||
21006 | if (n_var == n_elts && n_elts <= 16) | |
21007 | { | |
21008 | int matches[16][2] = {0}; | |
21009 | for (int i = 0; i < n_elts; i++) | |
21010 | { | |
21011 | for (int j = 0; j <= i; j++) | |
21012 | { | |
21013 | if (rtx_equal_p (XVECEXP (vals, 0, i), XVECEXP (vals, 0, j))) | |
21014 | { | |
21015 | matches[i][0] = j; | |
21016 | matches[j][1]++; | |
21017 | break; | |
21018 | } | |
21019 | } | |
21020 | } | |
21021 | int maxelement = 0; | |
21022 | int maxv = 0; | |
21023 | for (int i = 0; i < n_elts; i++) | |
21024 | if (matches[i][1] > maxv) | |
21025 | { | |
21026 | maxelement = i; | |
21027 | maxv = matches[i][1]; | |
21028 | } | |
21029 | ||
b4e2cd5b JG |
21030 | /* Create a duplicate of the most common element, unless all elements |
21031 | are equally useless to us, in which case just immediately set the | |
21032 | vector register using the first element. */ | |
21033 | ||
21034 | if (maxv == 1) | |
21035 | { | |
21036 | /* For vectors of two 64-bit elements, we can do even better. */ | |
21037 | if (n_elts == 2 | |
21038 | && (inner_mode == E_DImode | |
21039 | || inner_mode == E_DFmode)) | |
21040 | ||
21041 | { | |
21042 | rtx x0 = XVECEXP (vals, 0, 0); | |
21043 | rtx x1 = XVECEXP (vals, 0, 1); | |
21044 | /* Combine can pick up this case, but handling it directly | |
21045 | here leaves clearer RTL. | |
21046 | ||
21047 | This is load_pair_lanes<mode>, and also gives us a clean-up | |
21048 | for store_pair_lanes<mode>. */ | |
21049 | if (memory_operand (x0, inner_mode) | |
21050 | && memory_operand (x1, inner_mode) | |
21051 | && !STRICT_ALIGNMENT | |
21052 | && rtx_equal_p (XEXP (x1, 0), | |
21053 | plus_constant (Pmode, | |
21054 | XEXP (x0, 0), | |
21055 | GET_MODE_SIZE (inner_mode)))) | |
21056 | { | |
21057 | rtx t; | |
21058 | if (inner_mode == DFmode) | |
21059 | t = gen_load_pair_lanesdf (target, x0, x1); | |
21060 | else | |
21061 | t = gen_load_pair_lanesdi (target, x0, x1); | |
21062 | emit_insn (t); | |
21063 | return; | |
21064 | } | |
21065 | } | |
21066 | /* The subreg-move sequence below will move into lane zero of the | |
21067 | vector register. For big-endian we want that position to hold | |
21068 | the last element of VALS. */ | |
21069 | maxelement = BYTES_BIG_ENDIAN ? n_elts - 1 : 0; | |
21070 | rtx x = copy_to_mode_reg (inner_mode, XVECEXP (vals, 0, maxelement)); | |
21071 | aarch64_emit_move (target, lowpart_subreg (mode, x, inner_mode)); | |
21072 | } | |
21073 | else | |
21074 | { | |
21075 | rtx x = copy_to_mode_reg (inner_mode, XVECEXP (vals, 0, maxelement)); | |
21076 | aarch64_emit_move (target, gen_vec_duplicate (mode, x)); | |
21077 | } | |
85c1b6d7 AP |
21078 | |
21079 | /* Insert the rest. */ | |
21080 | for (int i = 0; i < n_elts; i++) | |
21081 | { | |
21082 | rtx x = XVECEXP (vals, 0, i); | |
21083 | if (matches[i][0] == maxelement) | |
21084 | continue; | |
21085 | x = copy_to_mode_reg (inner_mode, x); | |
21086 | emit_insn (GEN_FCN (icode) (target, x, GEN_INT (i))); | |
21087 | } | |
21088 | return; | |
21089 | } | |
21090 | ||
35a093b6 JG |
21091 | /* Initialise a vector which is part-variable. We want to first try |
21092 | to build those lanes which are constant in the most efficient way we | |
21093 | can. */ | |
21094 | if (n_var != n_elts) | |
4369c11e TB |
21095 | { |
21096 | rtx copy = copy_rtx (vals); | |
4369c11e | 21097 | |
8b66a2d4 AL |
21098 | /* Load constant part of vector. We really don't care what goes into the |
21099 | parts we will overwrite, but we're more likely to be able to load the | |
21100 | constant efficiently if it has fewer, larger, repeating parts | |
21101 | (see aarch64_simd_valid_immediate). */ | |
21102 | for (int i = 0; i < n_elts; i++) | |
21103 | { | |
21104 | rtx x = XVECEXP (vals, 0, i); | |
21105 | if (CONST_INT_P (x) || CONST_DOUBLE_P (x)) | |
21106 | continue; | |
21107 | rtx subst = any_const; | |
21108 | for (int bit = n_elts / 2; bit > 0; bit /= 2) | |
21109 | { | |
21110 | /* Look in the copied vector, as more elements are const. */ | |
21111 | rtx test = XVECEXP (copy, 0, i ^ bit); | |
21112 | if (CONST_INT_P (test) || CONST_DOUBLE_P (test)) | |
21113 | { | |
21114 | subst = test; | |
21115 | break; | |
21116 | } | |
21117 | } | |
21118 | XVECEXP (copy, 0, i) = subst; | |
21119 | } | |
4369c11e | 21120 | aarch64_expand_vector_init (target, copy); |
35a093b6 | 21121 | } |
4369c11e | 21122 | |
35a093b6 | 21123 | /* Insert the variable lanes directly. */ |
8b66a2d4 | 21124 | for (int i = 0; i < n_elts; i++) |
35a093b6 JG |
21125 | { |
21126 | rtx x = XVECEXP (vals, 0, i); | |
21127 | if (CONST_INT_P (x) || CONST_DOUBLE_P (x)) | |
21128 | continue; | |
21129 | x = copy_to_mode_reg (inner_mode, x); | |
21130 | emit_insn (GEN_FCN (icode) (target, x, GEN_INT (i))); | |
21131 | } | |
4369c11e TB |
21132 | } |
21133 | ||
3a0afad0 PK |
21134 | /* Emit RTL corresponding to: |
21135 | insr TARGET, ELEM. */ | |
21136 | ||
21137 | static void | |
21138 | emit_insr (rtx target, rtx elem) | |
21139 | { | |
21140 | machine_mode mode = GET_MODE (target); | |
21141 | scalar_mode elem_mode = GET_MODE_INNER (mode); | |
21142 | elem = force_reg (elem_mode, elem); | |
21143 | ||
21144 | insn_code icode = optab_handler (vec_shl_insert_optab, mode); | |
21145 | gcc_assert (icode != CODE_FOR_nothing); | |
21146 | emit_insn (GEN_FCN (icode) (target, target, elem)); | |
21147 | } | |
21148 | ||
21149 | /* Subroutine of aarch64_sve_expand_vector_init for handling | |
21150 | trailing constants. | |
21151 | This function works as follows: | |
21152 | (a) Create a new vector consisting of trailing constants. | |
21153 | (b) Initialize TARGET with the constant vector using emit_move_insn. | |
21154 | (c) Insert remaining elements in TARGET using insr. | |
21155 | NELTS is the total number of elements in original vector while | |
21156 | while NELTS_REQD is the number of elements that are actually | |
21157 | significant. | |
21158 | ||
21159 | ??? The heuristic used is to do above only if number of constants | |
21160 | is at least half the total number of elements. May need fine tuning. */ | |
21161 | ||
21162 | static bool | |
21163 | aarch64_sve_expand_vector_init_handle_trailing_constants | |
21164 | (rtx target, const rtx_vector_builder &builder, int nelts, int nelts_reqd) | |
21165 | { | |
21166 | machine_mode mode = GET_MODE (target); | |
21167 | scalar_mode elem_mode = GET_MODE_INNER (mode); | |
21168 | int n_trailing_constants = 0; | |
21169 | ||
21170 | for (int i = nelts_reqd - 1; | |
5da301cb | 21171 | i >= 0 && valid_for_const_vector_p (elem_mode, builder.elt (i)); |
3a0afad0 PK |
21172 | i--) |
21173 | n_trailing_constants++; | |
21174 | ||
21175 | if (n_trailing_constants >= nelts_reqd / 2) | |
21176 | { | |
5da301cb RS |
21177 | /* Try to use the natural pattern of BUILDER to extend the trailing |
21178 | constant elements to a full vector. Replace any variables in the | |
21179 | extra elements with zeros. | |
21180 | ||
21181 | ??? It would be better if the builders supported "don't care" | |
21182 | elements, with the builder filling in whichever elements | |
21183 | give the most compact encoding. */ | |
21184 | rtx_vector_builder v (mode, nelts, 1); | |
3a0afad0 | 21185 | for (int i = 0; i < nelts; i++) |
5da301cb RS |
21186 | { |
21187 | rtx x = builder.elt (i + nelts_reqd - n_trailing_constants); | |
21188 | if (!valid_for_const_vector_p (elem_mode, x)) | |
21189 | x = const0_rtx; | |
21190 | v.quick_push (x); | |
21191 | } | |
3a0afad0 PK |
21192 | rtx const_vec = v.build (); |
21193 | emit_move_insn (target, const_vec); | |
21194 | ||
21195 | for (int i = nelts_reqd - n_trailing_constants - 1; i >= 0; i--) | |
21196 | emit_insr (target, builder.elt (i)); | |
21197 | ||
21198 | return true; | |
21199 | } | |
21200 | ||
21201 | return false; | |
21202 | } | |
21203 | ||
21204 | /* Subroutine of aarch64_sve_expand_vector_init. | |
21205 | Works as follows: | |
21206 | (a) Initialize TARGET by broadcasting element NELTS_REQD - 1 of BUILDER. | |
21207 | (b) Skip trailing elements from BUILDER, which are the same as | |
21208 | element NELTS_REQD - 1. | |
21209 | (c) Insert earlier elements in reverse order in TARGET using insr. */ | |
21210 | ||
21211 | static void | |
21212 | aarch64_sve_expand_vector_init_insert_elems (rtx target, | |
21213 | const rtx_vector_builder &builder, | |
21214 | int nelts_reqd) | |
21215 | { | |
21216 | machine_mode mode = GET_MODE (target); | |
21217 | scalar_mode elem_mode = GET_MODE_INNER (mode); | |
21218 | ||
21219 | struct expand_operand ops[2]; | |
21220 | enum insn_code icode = optab_handler (vec_duplicate_optab, mode); | |
21221 | gcc_assert (icode != CODE_FOR_nothing); | |
21222 | ||
21223 | create_output_operand (&ops[0], target, mode); | |
21224 | create_input_operand (&ops[1], builder.elt (nelts_reqd - 1), elem_mode); | |
21225 | expand_insn (icode, 2, ops); | |
21226 | ||
21227 | int ndups = builder.count_dups (nelts_reqd - 1, -1, -1); | |
21228 | for (int i = nelts_reqd - ndups - 1; i >= 0; i--) | |
21229 | emit_insr (target, builder.elt (i)); | |
21230 | } | |
21231 | ||
21232 | /* Subroutine of aarch64_sve_expand_vector_init to handle case | |
21233 | when all trailing elements of builder are same. | |
21234 | This works as follows: | |
21235 | (a) Use expand_insn interface to broadcast last vector element in TARGET. | |
21236 | (b) Insert remaining elements in TARGET using insr. | |
21237 | ||
21238 | ??? The heuristic used is to do above if number of same trailing elements | |
21239 | is at least 3/4 of total number of elements, loosely based on | |
21240 | heuristic from mostly_zeros_p. May need fine-tuning. */ | |
21241 | ||
21242 | static bool | |
21243 | aarch64_sve_expand_vector_init_handle_trailing_same_elem | |
21244 | (rtx target, const rtx_vector_builder &builder, int nelts_reqd) | |
21245 | { | |
21246 | int ndups = builder.count_dups (nelts_reqd - 1, -1, -1); | |
21247 | if (ndups >= (3 * nelts_reqd) / 4) | |
21248 | { | |
21249 | aarch64_sve_expand_vector_init_insert_elems (target, builder, | |
21250 | nelts_reqd - ndups + 1); | |
21251 | return true; | |
21252 | } | |
21253 | ||
21254 | return false; | |
21255 | } | |
21256 | ||
21257 | /* Initialize register TARGET from BUILDER. NELTS is the constant number | |
21258 | of elements in BUILDER. | |
21259 | ||
21260 | The function tries to initialize TARGET from BUILDER if it fits one | |
21261 | of the special cases outlined below. | |
21262 | ||
21263 | Failing that, the function divides BUILDER into two sub-vectors: | |
21264 | v_even = even elements of BUILDER; | |
21265 | v_odd = odd elements of BUILDER; | |
21266 | ||
21267 | and recursively calls itself with v_even and v_odd. | |
21268 | ||
21269 | if (recursive call succeeded for v_even or v_odd) | |
21270 | TARGET = zip (v_even, v_odd) | |
21271 | ||
21272 | The function returns true if it managed to build TARGET from BUILDER | |
21273 | with one of the special cases, false otherwise. | |
21274 | ||
21275 | Example: {a, 1, b, 2, c, 3, d, 4} | |
21276 | ||
21277 | The vector gets divided into: | |
21278 | v_even = {a, b, c, d} | |
21279 | v_odd = {1, 2, 3, 4} | |
21280 | ||
21281 | aarch64_sve_expand_vector_init(v_odd) hits case 1 and | |
21282 | initialize tmp2 from constant vector v_odd using emit_move_insn. | |
21283 | ||
21284 | aarch64_sve_expand_vector_init(v_even) fails since v_even contains | |
21285 | 4 elements, so we construct tmp1 from v_even using insr: | |
21286 | tmp1 = dup(d) | |
21287 | insr tmp1, c | |
21288 | insr tmp1, b | |
21289 | insr tmp1, a | |
21290 | ||
21291 | And finally: | |
21292 | TARGET = zip (tmp1, tmp2) | |
21293 | which sets TARGET to {a, 1, b, 2, c, 3, d, 4}. */ | |
21294 | ||
21295 | static bool | |
21296 | aarch64_sve_expand_vector_init (rtx target, const rtx_vector_builder &builder, | |
21297 | int nelts, int nelts_reqd) | |
21298 | { | |
21299 | machine_mode mode = GET_MODE (target); | |
21300 | ||
21301 | /* Case 1: Vector contains trailing constants. */ | |
21302 | ||
21303 | if (aarch64_sve_expand_vector_init_handle_trailing_constants | |
21304 | (target, builder, nelts, nelts_reqd)) | |
21305 | return true; | |
21306 | ||
21307 | /* Case 2: Vector contains leading constants. */ | |
21308 | ||
5da301cb | 21309 | rtx_vector_builder rev_builder (mode, nelts_reqd, 1); |
3a0afad0 PK |
21310 | for (int i = 0; i < nelts_reqd; i++) |
21311 | rev_builder.quick_push (builder.elt (nelts_reqd - i - 1)); | |
21312 | rev_builder.finalize (); | |
21313 | ||
21314 | if (aarch64_sve_expand_vector_init_handle_trailing_constants | |
21315 | (target, rev_builder, nelts, nelts_reqd)) | |
21316 | { | |
21317 | emit_insn (gen_aarch64_sve_rev (mode, target, target)); | |
21318 | return true; | |
21319 | } | |
21320 | ||
21321 | /* Case 3: Vector contains trailing same element. */ | |
21322 | ||
21323 | if (aarch64_sve_expand_vector_init_handle_trailing_same_elem | |
21324 | (target, builder, nelts_reqd)) | |
21325 | return true; | |
21326 | ||
21327 | /* Case 4: Vector contains leading same element. */ | |
21328 | ||
21329 | if (aarch64_sve_expand_vector_init_handle_trailing_same_elem | |
21330 | (target, rev_builder, nelts_reqd) && nelts_reqd == nelts) | |
21331 | { | |
21332 | emit_insn (gen_aarch64_sve_rev (mode, target, target)); | |
21333 | return true; | |
21334 | } | |
21335 | ||
21336 | /* Avoid recursing below 4-elements. | |
21337 | ??? The threshold 4 may need fine-tuning. */ | |
21338 | ||
21339 | if (nelts_reqd <= 4) | |
21340 | return false; | |
21341 | ||
5da301cb RS |
21342 | rtx_vector_builder v_even (mode, nelts, 1); |
21343 | rtx_vector_builder v_odd (mode, nelts, 1); | |
3a0afad0 PK |
21344 | |
21345 | for (int i = 0; i < nelts * 2; i += 2) | |
21346 | { | |
21347 | v_even.quick_push (builder.elt (i)); | |
21348 | v_odd.quick_push (builder.elt (i + 1)); | |
21349 | } | |
21350 | ||
21351 | v_even.finalize (); | |
21352 | v_odd.finalize (); | |
21353 | ||
21354 | rtx tmp1 = gen_reg_rtx (mode); | |
21355 | bool did_even_p = aarch64_sve_expand_vector_init (tmp1, v_even, | |
21356 | nelts, nelts_reqd / 2); | |
21357 | ||
21358 | rtx tmp2 = gen_reg_rtx (mode); | |
21359 | bool did_odd_p = aarch64_sve_expand_vector_init (tmp2, v_odd, | |
21360 | nelts, nelts_reqd / 2); | |
21361 | ||
21362 | if (!did_even_p && !did_odd_p) | |
21363 | return false; | |
21364 | ||
21365 | /* Initialize v_even and v_odd using INSR if it didn't match any of the | |
21366 | special cases and zip v_even, v_odd. */ | |
21367 | ||
21368 | if (!did_even_p) | |
21369 | aarch64_sve_expand_vector_init_insert_elems (tmp1, v_even, nelts_reqd / 2); | |
21370 | ||
21371 | if (!did_odd_p) | |
21372 | aarch64_sve_expand_vector_init_insert_elems (tmp2, v_odd, nelts_reqd / 2); | |
21373 | ||
21374 | rtvec v = gen_rtvec (2, tmp1, tmp2); | |
21375 | emit_set_insn (target, gen_rtx_UNSPEC (mode, v, UNSPEC_ZIP1)); | |
21376 | return true; | |
21377 | } | |
21378 | ||
21379 | /* Initialize register TARGET from the elements in PARALLEL rtx VALS. */ | |
21380 | ||
21381 | void | |
21382 | aarch64_sve_expand_vector_init (rtx target, rtx vals) | |
21383 | { | |
21384 | machine_mode mode = GET_MODE (target); | |
21385 | int nelts = XVECLEN (vals, 0); | |
21386 | ||
5da301cb | 21387 | rtx_vector_builder v (mode, nelts, 1); |
3a0afad0 PK |
21388 | for (int i = 0; i < nelts; i++) |
21389 | v.quick_push (XVECEXP (vals, 0, i)); | |
21390 | v.finalize (); | |
21391 | ||
21392 | /* If neither sub-vectors of v could be initialized specially, | |
21393 | then use INSR to insert all elements from v into TARGET. | |
21394 | ??? This might not be optimal for vectors with large | |
21395 | initializers like 16-element or above. | |
21396 | For nelts < 4, it probably isn't useful to handle specially. */ | |
21397 | ||
21398 | if (nelts < 4 | |
21399 | || !aarch64_sve_expand_vector_init (target, v, nelts, nelts)) | |
21400 | aarch64_sve_expand_vector_init_insert_elems (target, v, nelts); | |
21401 | } | |
21402 | ||
b6c3aea1 RS |
21403 | /* Check whether VALUE is a vector constant in which every element |
21404 | is either a power of 2 or a negated power of 2. If so, return | |
21405 | a constant vector of log2s, and flip CODE between PLUS and MINUS | |
21406 | if VALUE contains negated powers of 2. Return NULL_RTX otherwise. */ | |
21407 | ||
21408 | static rtx | |
21409 | aarch64_convert_mult_to_shift (rtx value, rtx_code &code) | |
21410 | { | |
568b9c0e | 21411 | if (!CONST_VECTOR_P (value)) |
b6c3aea1 RS |
21412 | return NULL_RTX; |
21413 | ||
21414 | rtx_vector_builder builder; | |
21415 | if (!builder.new_unary_operation (GET_MODE (value), value, false)) | |
21416 | return NULL_RTX; | |
21417 | ||
21418 | scalar_mode int_mode = GET_MODE_INNER (GET_MODE (value)); | |
21419 | /* 1 if the result of the multiplication must be negated, | |
21420 | 0 if it mustn't, or -1 if we don't yet care. */ | |
21421 | int negate = -1; | |
21422 | unsigned int encoded_nelts = const_vector_encoded_nelts (value); | |
21423 | for (unsigned int i = 0; i < encoded_nelts; ++i) | |
21424 | { | |
21425 | rtx elt = CONST_VECTOR_ENCODED_ELT (value, i); | |
21426 | if (!CONST_SCALAR_INT_P (elt)) | |
21427 | return NULL_RTX; | |
21428 | rtx_mode_t val (elt, int_mode); | |
21429 | wide_int pow2 = wi::neg (val); | |
21430 | if (val != pow2) | |
21431 | { | |
21432 | /* It matters whether we negate or not. Make that choice, | |
21433 | and make sure that it's consistent with previous elements. */ | |
21434 | if (negate == !wi::neg_p (val)) | |
21435 | return NULL_RTX; | |
21436 | negate = wi::neg_p (val); | |
21437 | if (!negate) | |
21438 | pow2 = val; | |
21439 | } | |
21440 | /* POW2 is now the value that we want to be a power of 2. */ | |
21441 | int shift = wi::exact_log2 (pow2); | |
21442 | if (shift < 0) | |
21443 | return NULL_RTX; | |
21444 | builder.quick_push (gen_int_mode (shift, int_mode)); | |
21445 | } | |
21446 | if (negate == -1) | |
21447 | /* PLUS and MINUS are equivalent; canonicalize on PLUS. */ | |
21448 | code = PLUS; | |
21449 | else if (negate == 1) | |
21450 | code = code == PLUS ? MINUS : PLUS; | |
21451 | return builder.build (); | |
21452 | } | |
21453 | ||
21454 | /* Prepare for an integer SVE multiply-add or multiply-subtract pattern; | |
21455 | CODE is PLUS for the former and MINUS for the latter. OPERANDS is the | |
21456 | operands array, in the same order as for fma_optab. Return true if | |
21457 | the function emitted all the necessary instructions, false if the caller | |
21458 | should generate the pattern normally with the new OPERANDS array. */ | |
21459 | ||
21460 | bool | |
21461 | aarch64_prepare_sve_int_fma (rtx *operands, rtx_code code) | |
21462 | { | |
21463 | machine_mode mode = GET_MODE (operands[0]); | |
21464 | if (rtx shifts = aarch64_convert_mult_to_shift (operands[2], code)) | |
21465 | { | |
21466 | rtx product = expand_binop (mode, vashl_optab, operands[1], shifts, | |
21467 | NULL_RTX, true, OPTAB_DIRECT); | |
21468 | force_expand_binop (mode, code == PLUS ? add_optab : sub_optab, | |
21469 | operands[3], product, operands[0], true, | |
21470 | OPTAB_DIRECT); | |
21471 | return true; | |
21472 | } | |
21473 | operands[2] = force_reg (mode, operands[2]); | |
21474 | return false; | |
21475 | } | |
21476 | ||
21477 | /* Likewise, but for a conditional pattern. */ | |
21478 | ||
21479 | bool | |
21480 | aarch64_prepare_sve_cond_int_fma (rtx *operands, rtx_code code) | |
21481 | { | |
21482 | machine_mode mode = GET_MODE (operands[0]); | |
21483 | if (rtx shifts = aarch64_convert_mult_to_shift (operands[3], code)) | |
21484 | { | |
21485 | rtx product = expand_binop (mode, vashl_optab, operands[2], shifts, | |
21486 | NULL_RTX, true, OPTAB_DIRECT); | |
21487 | emit_insn (gen_cond (code, mode, operands[0], operands[1], | |
21488 | operands[4], product, operands[5])); | |
21489 | return true; | |
21490 | } | |
21491 | operands[3] = force_reg (mode, operands[3]); | |
21492 | return false; | |
21493 | } | |
21494 | ||
43e9d192 | 21495 | static unsigned HOST_WIDE_INT |
ef4bddc2 | 21496 | aarch64_shift_truncation_mask (machine_mode mode) |
43e9d192 | 21497 | { |
43cacb12 RS |
21498 | if (!SHIFT_COUNT_TRUNCATED || aarch64_vector_data_mode_p (mode)) |
21499 | return 0; | |
21500 | return GET_MODE_UNIT_BITSIZE (mode) - 1; | |
43e9d192 IB |
21501 | } |
21502 | ||
43e9d192 IB |
21503 | /* Select a format to encode pointers in exception handling data. */ |
21504 | int | |
21505 | aarch64_asm_preferred_eh_data_format (int code ATTRIBUTE_UNUSED, int global) | |
21506 | { | |
21507 | int type; | |
21508 | switch (aarch64_cmodel) | |
21509 | { | |
21510 | case AARCH64_CMODEL_TINY: | |
21511 | case AARCH64_CMODEL_TINY_PIC: | |
21512 | case AARCH64_CMODEL_SMALL: | |
21513 | case AARCH64_CMODEL_SMALL_PIC: | |
1b1e81f8 | 21514 | case AARCH64_CMODEL_SMALL_SPIC: |
43e9d192 IB |
21515 | /* text+got+data < 4Gb. 4-byte signed relocs are sufficient |
21516 | for everything. */ | |
21517 | type = DW_EH_PE_sdata4; | |
21518 | break; | |
21519 | default: | |
21520 | /* No assumptions here. 8-byte relocs required. */ | |
21521 | type = DW_EH_PE_sdata8; | |
21522 | break; | |
21523 | } | |
21524 | return (global ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | type; | |
21525 | } | |
21526 | ||
b07fc91c SN |
21527 | /* Output .variant_pcs for aarch64_vector_pcs function symbols. */ |
21528 | ||
21529 | static void | |
21530 | aarch64_asm_output_variant_pcs (FILE *stream, const tree decl, const char* name) | |
21531 | { | |
c600df9a | 21532 | if (TREE_CODE (decl) == FUNCTION_DECL) |
b07fc91c | 21533 | { |
c600df9a RS |
21534 | arm_pcs pcs = (arm_pcs) fndecl_abi (decl).id (); |
21535 | if (pcs == ARM_PCS_SIMD || pcs == ARM_PCS_SVE) | |
21536 | { | |
21537 | fprintf (stream, "\t.variant_pcs\t"); | |
21538 | assemble_name (stream, name); | |
21539 | fprintf (stream, "\n"); | |
21540 | } | |
b07fc91c SN |
21541 | } |
21542 | } | |
21543 | ||
e1c1ecb0 KT |
21544 | /* The last .arch and .tune assembly strings that we printed. */ |
21545 | static std::string aarch64_last_printed_arch_string; | |
21546 | static std::string aarch64_last_printed_tune_string; | |
21547 | ||
361fb3ee KT |
21548 | /* Implement ASM_DECLARE_FUNCTION_NAME. Output the ISA features used |
21549 | by the function fndecl. */ | |
21550 | ||
21551 | void | |
21552 | aarch64_declare_function_name (FILE *stream, const char* name, | |
21553 | tree fndecl) | |
21554 | { | |
21555 | tree target_parts = DECL_FUNCTION_SPECIFIC_TARGET (fndecl); | |
21556 | ||
21557 | struct cl_target_option *targ_options; | |
21558 | if (target_parts) | |
21559 | targ_options = TREE_TARGET_OPTION (target_parts); | |
21560 | else | |
21561 | targ_options = TREE_TARGET_OPTION (target_option_current_node); | |
21562 | gcc_assert (targ_options); | |
21563 | ||
21564 | const struct processor *this_arch | |
21565 | = aarch64_get_arch (targ_options->x_explicit_arch); | |
21566 | ||
28108a53 | 21567 | uint64_t isa_flags = targ_options->x_aarch64_isa_flags; |
054b4005 | 21568 | std::string extension |
04a99ebe JG |
21569 | = aarch64_get_extension_string_for_isa_flags (isa_flags, |
21570 | this_arch->flags); | |
e1c1ecb0 KT |
21571 | /* Only update the assembler .arch string if it is distinct from the last |
21572 | such string we printed. */ | |
21573 | std::string to_print = this_arch->name + extension; | |
21574 | if (to_print != aarch64_last_printed_arch_string) | |
21575 | { | |
21576 | asm_fprintf (asm_out_file, "\t.arch %s\n", to_print.c_str ()); | |
21577 | aarch64_last_printed_arch_string = to_print; | |
21578 | } | |
361fb3ee KT |
21579 | |
21580 | /* Print the cpu name we're tuning for in the comments, might be | |
e1c1ecb0 KT |
21581 | useful to readers of the generated asm. Do it only when it changes |
21582 | from function to function and verbose assembly is requested. */ | |
361fb3ee KT |
21583 | const struct processor *this_tune |
21584 | = aarch64_get_tune_cpu (targ_options->x_explicit_tune_core); | |
21585 | ||
e1c1ecb0 KT |
21586 | if (flag_debug_asm && aarch64_last_printed_tune_string != this_tune->name) |
21587 | { | |
21588 | asm_fprintf (asm_out_file, "\t" ASM_COMMENT_START ".tune %s\n", | |
21589 | this_tune->name); | |
21590 | aarch64_last_printed_tune_string = this_tune->name; | |
21591 | } | |
361fb3ee | 21592 | |
b07fc91c SN |
21593 | aarch64_asm_output_variant_pcs (stream, fndecl, name); |
21594 | ||
361fb3ee KT |
21595 | /* Don't forget the type directive for ELF. */ |
21596 | ASM_OUTPUT_TYPE_DIRECTIVE (stream, name, "function"); | |
21597 | ASM_OUTPUT_LABEL (stream, name); | |
c292cfe5 SN |
21598 | |
21599 | cfun->machine->label_is_assembled = true; | |
21600 | } | |
21601 | ||
21602 | /* Implement PRINT_PATCHABLE_FUNCTION_ENTRY. Check if the patch area is after | |
21603 | the function label and emit a BTI if necessary. */ | |
21604 | ||
21605 | void | |
21606 | aarch64_print_patchable_function_entry (FILE *file, | |
21607 | unsigned HOST_WIDE_INT patch_area_size, | |
21608 | bool record_p) | |
21609 | { | |
21610 | if (cfun->machine->label_is_assembled | |
21611 | && aarch64_bti_enabled () | |
21612 | && !cgraph_node::get (cfun->decl)->only_called_directly_p ()) | |
21613 | { | |
21614 | /* Remove the BTI that follows the patch area and insert a new BTI | |
21615 | before the patch area right after the function label. */ | |
21616 | rtx_insn *insn = next_real_nondebug_insn (get_insns ()); | |
21617 | if (insn | |
21618 | && INSN_P (insn) | |
21619 | && GET_CODE (PATTERN (insn)) == UNSPEC_VOLATILE | |
21620 | && XINT (PATTERN (insn), 1) == UNSPECV_BTI_C) | |
21621 | delete_insn (insn); | |
21622 | asm_fprintf (file, "\thint\t34 // bti c\n"); | |
21623 | } | |
21624 | ||
21625 | default_print_patchable_function_entry (file, patch_area_size, record_p); | |
361fb3ee KT |
21626 | } |
21627 | ||
b07fc91c SN |
21628 | /* Implement ASM_OUTPUT_DEF_FROM_DECLS. Output .variant_pcs for aliases. */ |
21629 | ||
21630 | void | |
21631 | aarch64_asm_output_alias (FILE *stream, const tree decl, const tree target) | |
21632 | { | |
21633 | const char *name = XSTR (XEXP (DECL_RTL (decl), 0), 0); | |
21634 | const char *value = IDENTIFIER_POINTER (target); | |
21635 | aarch64_asm_output_variant_pcs (stream, decl, name); | |
21636 | ASM_OUTPUT_DEF (stream, name, value); | |
21637 | } | |
21638 | ||
21639 | /* Implement ASM_OUTPUT_EXTERNAL. Output .variant_pcs for undefined | |
21640 | function symbol references. */ | |
21641 | ||
21642 | void | |
e8c47069 | 21643 | aarch64_asm_output_external (FILE *stream, tree decl, const char* name) |
b07fc91c | 21644 | { |
e8c47069 | 21645 | default_elf_asm_output_external (stream, decl, name); |
b07fc91c SN |
21646 | aarch64_asm_output_variant_pcs (stream, decl, name); |
21647 | } | |
21648 | ||
8fc16d72 ST |
21649 | /* Triggered after a .cfi_startproc directive is emitted into the assembly file. |
21650 | Used to output the .cfi_b_key_frame directive when signing the current | |
21651 | function with the B key. */ | |
21652 | ||
21653 | void | |
21654 | aarch64_post_cfi_startproc (FILE *f, tree ignored ATTRIBUTE_UNUSED) | |
21655 | { | |
2bdc7dcb | 21656 | if (cfun->machine->frame.laid_out && aarch64_return_address_signing_enabled () |
8fc16d72 ST |
21657 | && aarch64_ra_sign_key == AARCH64_KEY_B) |
21658 | asm_fprintf (f, "\t.cfi_b_key_frame\n"); | |
21659 | } | |
21660 | ||
e1c1ecb0 KT |
21661 | /* Implements TARGET_ASM_FILE_START. Output the assembly header. */ |
21662 | ||
21663 | static void | |
21664 | aarch64_start_file (void) | |
21665 | { | |
21666 | struct cl_target_option *default_options | |
21667 | = TREE_TARGET_OPTION (target_option_default_node); | |
21668 | ||
21669 | const struct processor *default_arch | |
21670 | = aarch64_get_arch (default_options->x_explicit_arch); | |
28108a53 | 21671 | uint64_t default_isa_flags = default_options->x_aarch64_isa_flags; |
e1c1ecb0 | 21672 | std::string extension |
04a99ebe JG |
21673 | = aarch64_get_extension_string_for_isa_flags (default_isa_flags, |
21674 | default_arch->flags); | |
e1c1ecb0 KT |
21675 | |
21676 | aarch64_last_printed_arch_string = default_arch->name + extension; | |
21677 | aarch64_last_printed_tune_string = ""; | |
21678 | asm_fprintf (asm_out_file, "\t.arch %s\n", | |
21679 | aarch64_last_printed_arch_string.c_str ()); | |
21680 | ||
21681 | default_file_start (); | |
21682 | } | |
21683 | ||
0462169c SN |
21684 | /* Emit load exclusive. */ |
21685 | ||
21686 | static void | |
ef4bddc2 | 21687 | aarch64_emit_load_exclusive (machine_mode mode, rtx rval, |
0462169c SN |
21688 | rtx mem, rtx model_rtx) |
21689 | { | |
4a2095eb RH |
21690 | if (mode == TImode) |
21691 | emit_insn (gen_aarch64_load_exclusive_pair (gen_lowpart (DImode, rval), | |
21692 | gen_highpart (DImode, rval), | |
21693 | mem, model_rtx)); | |
21694 | else | |
21695 | emit_insn (gen_aarch64_load_exclusive (mode, rval, mem, model_rtx)); | |
0462169c SN |
21696 | } |
21697 | ||
21698 | /* Emit store exclusive. */ | |
21699 | ||
21700 | static void | |
ef4bddc2 | 21701 | aarch64_emit_store_exclusive (machine_mode mode, rtx bval, |
4a2095eb | 21702 | rtx mem, rtx rval, rtx model_rtx) |
0462169c | 21703 | { |
4a2095eb RH |
21704 | if (mode == TImode) |
21705 | emit_insn (gen_aarch64_store_exclusive_pair | |
21706 | (bval, mem, operand_subword (rval, 0, 0, TImode), | |
21707 | operand_subword (rval, 1, 0, TImode), model_rtx)); | |
21708 | else | |
21709 | emit_insn (gen_aarch64_store_exclusive (mode, bval, mem, rval, model_rtx)); | |
0462169c SN |
21710 | } |
21711 | ||
21712 | /* Mark the previous jump instruction as unlikely. */ | |
21713 | ||
21714 | static void | |
21715 | aarch64_emit_unlikely_jump (rtx insn) | |
21716 | { | |
f370536c | 21717 | rtx_insn *jump = emit_jump_insn (insn); |
5fa396ad | 21718 | add_reg_br_prob_note (jump, profile_probability::very_unlikely ()); |
0462169c SN |
21719 | } |
21720 | ||
3950b229 RH |
21721 | /* We store the names of the various atomic helpers in a 5x4 array. |
21722 | Return the libcall function given MODE, MODEL and NAMES. */ | |
21723 | ||
21724 | rtx | |
21725 | aarch64_atomic_ool_func(machine_mode mode, rtx model_rtx, | |
21726 | const atomic_ool_names *names) | |
21727 | { | |
21728 | memmodel model = memmodel_base (INTVAL (model_rtx)); | |
21729 | int mode_idx, model_idx; | |
21730 | ||
21731 | switch (mode) | |
21732 | { | |
21733 | case E_QImode: | |
21734 | mode_idx = 0; | |
21735 | break; | |
21736 | case E_HImode: | |
21737 | mode_idx = 1; | |
21738 | break; | |
21739 | case E_SImode: | |
21740 | mode_idx = 2; | |
21741 | break; | |
21742 | case E_DImode: | |
21743 | mode_idx = 3; | |
21744 | break; | |
21745 | case E_TImode: | |
21746 | mode_idx = 4; | |
21747 | break; | |
21748 | default: | |
21749 | gcc_unreachable (); | |
21750 | } | |
21751 | ||
21752 | switch (model) | |
21753 | { | |
21754 | case MEMMODEL_RELAXED: | |
21755 | model_idx = 0; | |
21756 | break; | |
21757 | case MEMMODEL_CONSUME: | |
21758 | case MEMMODEL_ACQUIRE: | |
21759 | model_idx = 1; | |
21760 | break; | |
21761 | case MEMMODEL_RELEASE: | |
21762 | model_idx = 2; | |
21763 | break; | |
21764 | case MEMMODEL_ACQ_REL: | |
21765 | case MEMMODEL_SEQ_CST: | |
21766 | model_idx = 3; | |
21767 | break; | |
21768 | default: | |
21769 | gcc_unreachable (); | |
21770 | } | |
21771 | ||
21772 | return init_one_libfunc_visibility (names->str[mode_idx][model_idx], | |
21773 | VISIBILITY_HIDDEN); | |
21774 | } | |
21775 | ||
21776 | #define DEF0(B, N) \ | |
21777 | { "__aarch64_" #B #N "_relax", \ | |
21778 | "__aarch64_" #B #N "_acq", \ | |
21779 | "__aarch64_" #B #N "_rel", \ | |
21780 | "__aarch64_" #B #N "_acq_rel" } | |
21781 | ||
21782 | #define DEF4(B) DEF0(B, 1), DEF0(B, 2), DEF0(B, 4), DEF0(B, 8), \ | |
21783 | { NULL, NULL, NULL, NULL } | |
21784 | #define DEF5(B) DEF0(B, 1), DEF0(B, 2), DEF0(B, 4), DEF0(B, 8), DEF0(B, 16) | |
21785 | ||
21786 | static const atomic_ool_names aarch64_ool_cas_names = { { DEF5(cas) } }; | |
21787 | const atomic_ool_names aarch64_ool_swp_names = { { DEF4(swp) } }; | |
21788 | const atomic_ool_names aarch64_ool_ldadd_names = { { DEF4(ldadd) } }; | |
21789 | const atomic_ool_names aarch64_ool_ldset_names = { { DEF4(ldset) } }; | |
21790 | const atomic_ool_names aarch64_ool_ldclr_names = { { DEF4(ldclr) } }; | |
21791 | const atomic_ool_names aarch64_ool_ldeor_names = { { DEF4(ldeor) } }; | |
21792 | ||
21793 | #undef DEF0 | |
21794 | #undef DEF4 | |
21795 | #undef DEF5 | |
21796 | ||
0462169c SN |
21797 | /* Expand a compare and swap pattern. */ |
21798 | ||
21799 | void | |
21800 | aarch64_expand_compare_and_swap (rtx operands[]) | |
21801 | { | |
d400fda3 RH |
21802 | rtx bval, rval, mem, oldval, newval, is_weak, mod_s, mod_f, x, cc_reg; |
21803 | machine_mode mode, r_mode; | |
0462169c SN |
21804 | |
21805 | bval = operands[0]; | |
21806 | rval = operands[1]; | |
21807 | mem = operands[2]; | |
21808 | oldval = operands[3]; | |
21809 | newval = operands[4]; | |
21810 | is_weak = operands[5]; | |
21811 | mod_s = operands[6]; | |
21812 | mod_f = operands[7]; | |
21813 | mode = GET_MODE (mem); | |
0462169c SN |
21814 | |
21815 | /* Normally the succ memory model must be stronger than fail, but in the | |
21816 | unlikely event of fail being ACQUIRE and succ being RELEASE we need to | |
21817 | promote succ to ACQ_REL so that we don't lose the acquire semantics. */ | |
46b35980 AM |
21818 | if (is_mm_acquire (memmodel_from_int (INTVAL (mod_f))) |
21819 | && is_mm_release (memmodel_from_int (INTVAL (mod_s)))) | |
0462169c SN |
21820 | mod_s = GEN_INT (MEMMODEL_ACQ_REL); |
21821 | ||
d400fda3 RH |
21822 | r_mode = mode; |
21823 | if (mode == QImode || mode == HImode) | |
0462169c | 21824 | { |
d400fda3 RH |
21825 | r_mode = SImode; |
21826 | rval = gen_reg_rtx (r_mode); | |
0462169c SN |
21827 | } |
21828 | ||
b0770c0f | 21829 | if (TARGET_LSE) |
77f33f44 RH |
21830 | { |
21831 | /* The CAS insn requires oldval and rval overlap, but we need to | |
21832 | have a copy of oldval saved across the operation to tell if | |
21833 | the operation is successful. */ | |
d400fda3 RH |
21834 | if (reg_overlap_mentioned_p (rval, oldval)) |
21835 | rval = copy_to_mode_reg (r_mode, oldval); | |
77f33f44 | 21836 | else |
d400fda3 RH |
21837 | emit_move_insn (rval, gen_lowpart (r_mode, oldval)); |
21838 | ||
77f33f44 RH |
21839 | emit_insn (gen_aarch64_compare_and_swap_lse (mode, rval, mem, |
21840 | newval, mod_s)); | |
d400fda3 | 21841 | cc_reg = aarch64_gen_compare_reg_maybe_ze (NE, rval, oldval, mode); |
77f33f44 | 21842 | } |
3950b229 RH |
21843 | else if (TARGET_OUTLINE_ATOMICS) |
21844 | { | |
21845 | /* Oldval must satisfy compare afterward. */ | |
21846 | if (!aarch64_plus_operand (oldval, mode)) | |
21847 | oldval = force_reg (mode, oldval); | |
21848 | rtx func = aarch64_atomic_ool_func (mode, mod_s, &aarch64_ool_cas_names); | |
21849 | rval = emit_library_call_value (func, NULL_RTX, LCT_NORMAL, r_mode, | |
21850 | oldval, mode, newval, mode, | |
21851 | XEXP (mem, 0), Pmode); | |
21852 | cc_reg = aarch64_gen_compare_reg_maybe_ze (NE, rval, oldval, mode); | |
21853 | } | |
b0770c0f | 21854 | else |
d400fda3 RH |
21855 | { |
21856 | /* The oldval predicate varies by mode. Test it and force to reg. */ | |
21857 | insn_code code = code_for_aarch64_compare_and_swap (mode); | |
21858 | if (!insn_data[code].operand[2].predicate (oldval, mode)) | |
21859 | oldval = force_reg (mode, oldval); | |
0462169c | 21860 | |
d400fda3 RH |
21861 | emit_insn (GEN_FCN (code) (rval, mem, oldval, newval, |
21862 | is_weak, mod_s, mod_f)); | |
21863 | cc_reg = gen_rtx_REG (CCmode, CC_REGNUM); | |
21864 | } | |
21865 | ||
21866 | if (r_mode != mode) | |
77f33f44 RH |
21867 | rval = gen_lowpart (mode, rval); |
21868 | emit_move_insn (operands[1], rval); | |
0462169c | 21869 | |
d400fda3 | 21870 | x = gen_rtx_EQ (SImode, cc_reg, const0_rtx); |
f7df4a84 | 21871 | emit_insn (gen_rtx_SET (bval, x)); |
0462169c SN |
21872 | } |
21873 | ||
f70fb3b6 MW |
21874 | /* Emit a barrier, that is appropriate for memory model MODEL, at the end of a |
21875 | sequence implementing an atomic operation. */ | |
21876 | ||
21877 | static void | |
21878 | aarch64_emit_post_barrier (enum memmodel model) | |
21879 | { | |
21880 | const enum memmodel base_model = memmodel_base (model); | |
21881 | ||
21882 | if (is_mm_sync (model) | |
21883 | && (base_model == MEMMODEL_ACQUIRE | |
21884 | || base_model == MEMMODEL_ACQ_REL | |
21885 | || base_model == MEMMODEL_SEQ_CST)) | |
21886 | { | |
21887 | emit_insn (gen_mem_thread_fence (GEN_INT (MEMMODEL_SEQ_CST))); | |
21888 | } | |
21889 | } | |
21890 | ||
0462169c SN |
21891 | /* Split a compare and swap pattern. */ |
21892 | ||
21893 | void | |
21894 | aarch64_split_compare_and_swap (rtx operands[]) | |
21895 | { | |
e5e07b68 WD |
21896 | /* Split after prolog/epilog to avoid interactions with shrinkwrapping. */ |
21897 | gcc_assert (epilogue_completed); | |
21898 | ||
b7e560de | 21899 | rtx rval, mem, oldval, newval, scratch, x, model_rtx; |
ef4bddc2 | 21900 | machine_mode mode; |
0462169c | 21901 | bool is_weak; |
5d8a22a5 | 21902 | rtx_code_label *label1, *label2; |
ab876106 | 21903 | enum memmodel model; |
0462169c SN |
21904 | |
21905 | rval = operands[0]; | |
21906 | mem = operands[1]; | |
21907 | oldval = operands[2]; | |
21908 | newval = operands[3]; | |
21909 | is_weak = (operands[4] != const0_rtx); | |
ab876106 | 21910 | model_rtx = operands[5]; |
0462169c SN |
21911 | scratch = operands[7]; |
21912 | mode = GET_MODE (mem); | |
ab876106 | 21913 | model = memmodel_from_int (INTVAL (model_rtx)); |
0462169c | 21914 | |
17f47f86 KT |
21915 | /* When OLDVAL is zero and we want the strong version we can emit a tighter |
21916 | loop: | |
21917 | .label1: | |
21918 | LD[A]XR rval, [mem] | |
21919 | CBNZ rval, .label2 | |
21920 | ST[L]XR scratch, newval, [mem] | |
21921 | CBNZ scratch, .label1 | |
21922 | .label2: | |
21923 | CMP rval, 0. */ | |
b7e560de RH |
21924 | bool strong_zero_p = (!is_weak && !aarch64_track_speculation && |
21925 | oldval == const0_rtx && mode != TImode); | |
17f47f86 | 21926 | |
5d8a22a5 | 21927 | label1 = NULL; |
0462169c SN |
21928 | if (!is_weak) |
21929 | { | |
21930 | label1 = gen_label_rtx (); | |
21931 | emit_label (label1); | |
21932 | } | |
21933 | label2 = gen_label_rtx (); | |
21934 | ||
ab876106 MW |
21935 | /* The initial load can be relaxed for a __sync operation since a final |
21936 | barrier will be emitted to stop code hoisting. */ | |
21937 | if (is_mm_sync (model)) | |
b7e560de | 21938 | aarch64_emit_load_exclusive (mode, rval, mem, GEN_INT (MEMMODEL_RELAXED)); |
ab876106 MW |
21939 | else |
21940 | aarch64_emit_load_exclusive (mode, rval, mem, model_rtx); | |
0462169c | 21941 | |
17f47f86 | 21942 | if (strong_zero_p) |
b7e560de | 21943 | x = gen_rtx_NE (VOIDmode, rval, const0_rtx); |
17f47f86 KT |
21944 | else |
21945 | { | |
b7e560de RH |
21946 | rtx cc_reg = aarch64_gen_compare_reg_maybe_ze (NE, rval, oldval, mode); |
21947 | x = gen_rtx_NE (VOIDmode, cc_reg, const0_rtx); | |
17f47f86 | 21948 | } |
b7e560de RH |
21949 | x = gen_rtx_IF_THEN_ELSE (VOIDmode, x, |
21950 | gen_rtx_LABEL_REF (Pmode, label2), pc_rtx); | |
21951 | aarch64_emit_unlikely_jump (gen_rtx_SET (pc_rtx, x)); | |
0462169c | 21952 | |
ab876106 | 21953 | aarch64_emit_store_exclusive (mode, scratch, mem, newval, model_rtx); |
0462169c SN |
21954 | |
21955 | if (!is_weak) | |
21956 | { | |
6e1eaca9 RE |
21957 | if (aarch64_track_speculation) |
21958 | { | |
21959 | /* Emit an explicit compare instruction, so that we can correctly | |
21960 | track the condition codes. */ | |
21961 | rtx cc_reg = aarch64_gen_compare_reg (NE, scratch, const0_rtx); | |
21962 | x = gen_rtx_NE (GET_MODE (cc_reg), cc_reg, const0_rtx); | |
21963 | } | |
21964 | else | |
21965 | x = gen_rtx_NE (VOIDmode, scratch, const0_rtx); | |
21966 | ||
0462169c SN |
21967 | x = gen_rtx_IF_THEN_ELSE (VOIDmode, x, |
21968 | gen_rtx_LABEL_REF (Pmode, label1), pc_rtx); | |
f7df4a84 | 21969 | aarch64_emit_unlikely_jump (gen_rtx_SET (pc_rtx, x)); |
0462169c SN |
21970 | } |
21971 | else | |
b7e560de | 21972 | aarch64_gen_compare_reg (NE, scratch, const0_rtx); |
0462169c SN |
21973 | |
21974 | emit_label (label2); | |
b7e560de | 21975 | |
17f47f86 KT |
21976 | /* If we used a CBNZ in the exchange loop emit an explicit compare with RVAL |
21977 | to set the condition flags. If this is not used it will be removed by | |
21978 | later passes. */ | |
21979 | if (strong_zero_p) | |
b7e560de RH |
21980 | aarch64_gen_compare_reg (NE, rval, const0_rtx); |
21981 | ||
ab876106 MW |
21982 | /* Emit any final barrier needed for a __sync operation. */ |
21983 | if (is_mm_sync (model)) | |
21984 | aarch64_emit_post_barrier (model); | |
0462169c | 21985 | } |
9cd7b720 | 21986 | |
0462169c SN |
21987 | /* Split an atomic operation. */ |
21988 | ||
21989 | void | |
21990 | aarch64_split_atomic_op (enum rtx_code code, rtx old_out, rtx new_out, rtx mem, | |
9cd7b720 | 21991 | rtx value, rtx model_rtx, rtx cond) |
0462169c | 21992 | { |
e5e07b68 WD |
21993 | /* Split after prolog/epilog to avoid interactions with shrinkwrapping. */ |
21994 | gcc_assert (epilogue_completed); | |
21995 | ||
ef4bddc2 RS |
21996 | machine_mode mode = GET_MODE (mem); |
21997 | machine_mode wmode = (mode == DImode ? DImode : SImode); | |
f70fb3b6 MW |
21998 | const enum memmodel model = memmodel_from_int (INTVAL (model_rtx)); |
21999 | const bool is_sync = is_mm_sync (model); | |
5d8a22a5 DM |
22000 | rtx_code_label *label; |
22001 | rtx x; | |
0462169c | 22002 | |
9cd7b720 | 22003 | /* Split the atomic operation into a sequence. */ |
0462169c SN |
22004 | label = gen_label_rtx (); |
22005 | emit_label (label); | |
22006 | ||
22007 | if (new_out) | |
22008 | new_out = gen_lowpart (wmode, new_out); | |
22009 | if (old_out) | |
22010 | old_out = gen_lowpart (wmode, old_out); | |
22011 | else | |
22012 | old_out = new_out; | |
22013 | value = simplify_gen_subreg (wmode, value, mode, 0); | |
22014 | ||
f70fb3b6 MW |
22015 | /* The initial load can be relaxed for a __sync operation since a final |
22016 | barrier will be emitted to stop code hoisting. */ | |
22017 | if (is_sync) | |
22018 | aarch64_emit_load_exclusive (mode, old_out, mem, | |
22019 | GEN_INT (MEMMODEL_RELAXED)); | |
22020 | else | |
22021 | aarch64_emit_load_exclusive (mode, old_out, mem, model_rtx); | |
0462169c SN |
22022 | |
22023 | switch (code) | |
22024 | { | |
22025 | case SET: | |
22026 | new_out = value; | |
22027 | break; | |
22028 | ||
22029 | case NOT: | |
22030 | x = gen_rtx_AND (wmode, old_out, value); | |
f7df4a84 | 22031 | emit_insn (gen_rtx_SET (new_out, x)); |
0462169c | 22032 | x = gen_rtx_NOT (wmode, new_out); |
f7df4a84 | 22033 | emit_insn (gen_rtx_SET (new_out, x)); |
0462169c SN |
22034 | break; |
22035 | ||
22036 | case MINUS: | |
22037 | if (CONST_INT_P (value)) | |
22038 | { | |
618ae596 | 22039 | value = GEN_INT (-UINTVAL (value)); |
0462169c SN |
22040 | code = PLUS; |
22041 | } | |
22042 | /* Fall through. */ | |
22043 | ||
22044 | default: | |
22045 | x = gen_rtx_fmt_ee (code, wmode, old_out, value); | |
f7df4a84 | 22046 | emit_insn (gen_rtx_SET (new_out, x)); |
0462169c SN |
22047 | break; |
22048 | } | |
22049 | ||
22050 | aarch64_emit_store_exclusive (mode, cond, mem, | |
22051 | gen_lowpart (mode, new_out), model_rtx); | |
22052 | ||
6e1eaca9 RE |
22053 | if (aarch64_track_speculation) |
22054 | { | |
22055 | /* Emit an explicit compare instruction, so that we can correctly | |
22056 | track the condition codes. */ | |
22057 | rtx cc_reg = aarch64_gen_compare_reg (NE, cond, const0_rtx); | |
22058 | x = gen_rtx_NE (GET_MODE (cc_reg), cc_reg, const0_rtx); | |
22059 | } | |
22060 | else | |
22061 | x = gen_rtx_NE (VOIDmode, cond, const0_rtx); | |
22062 | ||
0462169c SN |
22063 | x = gen_rtx_IF_THEN_ELSE (VOIDmode, x, |
22064 | gen_rtx_LABEL_REF (Pmode, label), pc_rtx); | |
f7df4a84 | 22065 | aarch64_emit_unlikely_jump (gen_rtx_SET (pc_rtx, x)); |
f70fb3b6 MW |
22066 | |
22067 | /* Emit any final barrier needed for a __sync operation. */ | |
22068 | if (is_sync) | |
22069 | aarch64_emit_post_barrier (model); | |
0462169c SN |
22070 | } |
22071 | ||
c2ec330c AL |
22072 | static void |
22073 | aarch64_init_libfuncs (void) | |
22074 | { | |
22075 | /* Half-precision float operations. The compiler handles all operations | |
22076 | with NULL libfuncs by converting to SFmode. */ | |
22077 | ||
22078 | /* Conversions. */ | |
22079 | set_conv_libfunc (trunc_optab, HFmode, SFmode, "__gnu_f2h_ieee"); | |
22080 | set_conv_libfunc (sext_optab, SFmode, HFmode, "__gnu_h2f_ieee"); | |
22081 | ||
22082 | /* Arithmetic. */ | |
22083 | set_optab_libfunc (add_optab, HFmode, NULL); | |
22084 | set_optab_libfunc (sdiv_optab, HFmode, NULL); | |
22085 | set_optab_libfunc (smul_optab, HFmode, NULL); | |
22086 | set_optab_libfunc (neg_optab, HFmode, NULL); | |
22087 | set_optab_libfunc (sub_optab, HFmode, NULL); | |
22088 | ||
22089 | /* Comparisons. */ | |
22090 | set_optab_libfunc (eq_optab, HFmode, NULL); | |
22091 | set_optab_libfunc (ne_optab, HFmode, NULL); | |
22092 | set_optab_libfunc (lt_optab, HFmode, NULL); | |
22093 | set_optab_libfunc (le_optab, HFmode, NULL); | |
22094 | set_optab_libfunc (ge_optab, HFmode, NULL); | |
22095 | set_optab_libfunc (gt_optab, HFmode, NULL); | |
22096 | set_optab_libfunc (unord_optab, HFmode, NULL); | |
22097 | } | |
22098 | ||
43e9d192 | 22099 | /* Target hook for c_mode_for_suffix. */ |
ef4bddc2 | 22100 | static machine_mode |
43e9d192 IB |
22101 | aarch64_c_mode_for_suffix (char suffix) |
22102 | { | |
22103 | if (suffix == 'q') | |
22104 | return TFmode; | |
22105 | ||
22106 | return VOIDmode; | |
22107 | } | |
22108 | ||
3520f7cc JG |
22109 | /* We can only represent floating point constants which will fit in |
22110 | "quarter-precision" values. These values are characterised by | |
22111 | a sign bit, a 4-bit mantissa and a 3-bit exponent. And are given | |
22112 | by: | |
22113 | ||
22114 | (-1)^s * (n/16) * 2^r | |
22115 | ||
22116 | Where: | |
22117 | 's' is the sign bit. | |
22118 | 'n' is an integer in the range 16 <= n <= 31. | |
22119 | 'r' is an integer in the range -3 <= r <= 4. */ | |
22120 | ||
22121 | /* Return true iff X can be represented by a quarter-precision | |
22122 | floating point immediate operand X. Note, we cannot represent 0.0. */ | |
22123 | bool | |
22124 | aarch64_float_const_representable_p (rtx x) | |
22125 | { | |
22126 | /* This represents our current view of how many bits | |
22127 | make up the mantissa. */ | |
22128 | int point_pos = 2 * HOST_BITS_PER_WIDE_INT - 1; | |
ba96cdfb | 22129 | int exponent; |
3520f7cc | 22130 | unsigned HOST_WIDE_INT mantissa, mask; |
3520f7cc | 22131 | REAL_VALUE_TYPE r, m; |
807e902e | 22132 | bool fail; |
3520f7cc | 22133 | |
d29f7dd5 | 22134 | x = unwrap_const_vec_duplicate (x); |
3520f7cc JG |
22135 | if (!CONST_DOUBLE_P (x)) |
22136 | return false; | |
22137 | ||
a4518821 RS |
22138 | if (GET_MODE (x) == VOIDmode |
22139 | || (GET_MODE (x) == HFmode && !TARGET_FP_F16INST)) | |
94bfa2da TV |
22140 | return false; |
22141 | ||
34a72c33 | 22142 | r = *CONST_DOUBLE_REAL_VALUE (x); |
3520f7cc JG |
22143 | |
22144 | /* We cannot represent infinities, NaNs or +/-zero. We won't | |
22145 | know if we have +zero until we analyse the mantissa, but we | |
22146 | can reject the other invalid values. */ | |
22147 | if (REAL_VALUE_ISINF (r) || REAL_VALUE_ISNAN (r) | |
22148 | || REAL_VALUE_MINUS_ZERO (r)) | |
22149 | return false; | |
22150 | ||
ba96cdfb | 22151 | /* Extract exponent. */ |
3520f7cc JG |
22152 | r = real_value_abs (&r); |
22153 | exponent = REAL_EXP (&r); | |
22154 | ||
22155 | /* For the mantissa, we expand into two HOST_WIDE_INTS, apart from the | |
22156 | highest (sign) bit, with a fixed binary point at bit point_pos. | |
22157 | m1 holds the low part of the mantissa, m2 the high part. | |
22158 | WARNING: If we ever have a representation using more than 2 * H_W_I - 1 | |
22159 | bits for the mantissa, this can fail (low bits will be lost). */ | |
22160 | real_ldexp (&m, &r, point_pos - exponent); | |
807e902e | 22161 | wide_int w = real_to_integer (&m, &fail, HOST_BITS_PER_WIDE_INT * 2); |
3520f7cc JG |
22162 | |
22163 | /* If the low part of the mantissa has bits set we cannot represent | |
22164 | the value. */ | |
d9074b29 | 22165 | if (w.ulow () != 0) |
3520f7cc JG |
22166 | return false; |
22167 | /* We have rejected the lower HOST_WIDE_INT, so update our | |
22168 | understanding of how many bits lie in the mantissa and | |
22169 | look only at the high HOST_WIDE_INT. */ | |
807e902e | 22170 | mantissa = w.elt (1); |
3520f7cc JG |
22171 | point_pos -= HOST_BITS_PER_WIDE_INT; |
22172 | ||
22173 | /* We can only represent values with a mantissa of the form 1.xxxx. */ | |
22174 | mask = ((unsigned HOST_WIDE_INT)1 << (point_pos - 5)) - 1; | |
22175 | if ((mantissa & mask) != 0) | |
22176 | return false; | |
22177 | ||
22178 | /* Having filtered unrepresentable values, we may now remove all | |
22179 | but the highest 5 bits. */ | |
22180 | mantissa >>= point_pos - 5; | |
22181 | ||
22182 | /* We cannot represent the value 0.0, so reject it. This is handled | |
22183 | elsewhere. */ | |
22184 | if (mantissa == 0) | |
22185 | return false; | |
22186 | ||
22187 | /* Then, as bit 4 is always set, we can mask it off, leaving | |
22188 | the mantissa in the range [0, 15]. */ | |
22189 | mantissa &= ~(1 << 4); | |
22190 | gcc_assert (mantissa <= 15); | |
22191 | ||
22192 | /* GCC internally does not use IEEE754-like encoding (where normalized | |
22193 | significands are in the range [1, 2). GCC uses [0.5, 1) (see real.c). | |
22194 | Our mantissa values are shifted 4 places to the left relative to | |
22195 | normalized IEEE754 so we must modify the exponent returned by REAL_EXP | |
22196 | by 5 places to correct for GCC's representation. */ | |
22197 | exponent = 5 - exponent; | |
22198 | ||
22199 | return (exponent >= 0 && exponent <= 7); | |
22200 | } | |
22201 | ||
ab6501d7 SD |
22202 | /* Returns the string with the instruction for AdvSIMD MOVI, MVNI, ORR or BIC |
22203 | immediate with a CONST_VECTOR of MODE and WIDTH. WHICH selects whether to | |
22204 | output MOVI/MVNI, ORR or BIC immediate. */ | |
3520f7cc | 22205 | char* |
b187677b | 22206 | aarch64_output_simd_mov_immediate (rtx const_vector, unsigned width, |
ab6501d7 | 22207 | enum simd_immediate_check which) |
3520f7cc | 22208 | { |
3ea63f60 | 22209 | bool is_valid; |
3520f7cc | 22210 | static char templ[40]; |
3520f7cc | 22211 | const char *mnemonic; |
e4f0f84d | 22212 | const char *shift_op; |
3520f7cc | 22213 | unsigned int lane_count = 0; |
81c2dfb9 | 22214 | char element_char; |
3520f7cc | 22215 | |
b187677b | 22216 | struct simd_immediate_info info; |
48063b9d IB |
22217 | |
22218 | /* This will return true to show const_vector is legal for use as either | |
ab6501d7 SD |
22219 | a AdvSIMD MOVI instruction (or, implicitly, MVNI), ORR or BIC immediate. |
22220 | It will also update INFO to show how the immediate should be generated. | |
22221 | WHICH selects whether to check for MOVI/MVNI, ORR or BIC. */ | |
b187677b | 22222 | is_valid = aarch64_simd_valid_immediate (const_vector, &info, which); |
3520f7cc JG |
22223 | gcc_assert (is_valid); |
22224 | ||
b187677b RS |
22225 | element_char = sizetochar (GET_MODE_BITSIZE (info.elt_mode)); |
22226 | lane_count = width / GET_MODE_BITSIZE (info.elt_mode); | |
48063b9d | 22227 | |
b187677b | 22228 | if (GET_MODE_CLASS (info.elt_mode) == MODE_FLOAT) |
3520f7cc | 22229 | { |
1da83cce RS |
22230 | gcc_assert (info.insn == simd_immediate_info::MOV |
22231 | && info.u.mov.shift == 0); | |
0d8e1702 KT |
22232 | /* For FP zero change it to a CONST_INT 0 and use the integer SIMD |
22233 | move immediate path. */ | |
1da83cce RS |
22234 | if (aarch64_float_const_zero_rtx_p (info.u.mov.value)) |
22235 | info.u.mov.value = GEN_INT (0); | |
48063b9d IB |
22236 | else |
22237 | { | |
83faf7d0 | 22238 | const unsigned int buf_size = 20; |
48063b9d | 22239 | char float_buf[buf_size] = {'\0'}; |
34a72c33 | 22240 | real_to_decimal_for_mode (float_buf, |
1da83cce | 22241 | CONST_DOUBLE_REAL_VALUE (info.u.mov.value), |
b187677b | 22242 | buf_size, buf_size, 1, info.elt_mode); |
48063b9d IB |
22243 | |
22244 | if (lane_count == 1) | |
22245 | snprintf (templ, sizeof (templ), "fmov\t%%d0, %s", float_buf); | |
22246 | else | |
22247 | snprintf (templ, sizeof (templ), "fmov\t%%0.%d%c, %s", | |
81c2dfb9 | 22248 | lane_count, element_char, float_buf); |
48063b9d IB |
22249 | return templ; |
22250 | } | |
3520f7cc | 22251 | } |
3520f7cc | 22252 | |
1da83cce | 22253 | gcc_assert (CONST_INT_P (info.u.mov.value)); |
ab6501d7 SD |
22254 | |
22255 | if (which == AARCH64_CHECK_MOV) | |
22256 | { | |
b187677b | 22257 | mnemonic = info.insn == simd_immediate_info::MVN ? "mvni" : "movi"; |
1da83cce RS |
22258 | shift_op = (info.u.mov.modifier == simd_immediate_info::MSL |
22259 | ? "msl" : "lsl"); | |
ab6501d7 SD |
22260 | if (lane_count == 1) |
22261 | snprintf (templ, sizeof (templ), "%s\t%%d0, " HOST_WIDE_INT_PRINT_HEX, | |
1da83cce RS |
22262 | mnemonic, UINTVAL (info.u.mov.value)); |
22263 | else if (info.u.mov.shift) | |
ab6501d7 SD |
22264 | snprintf (templ, sizeof (templ), "%s\t%%0.%d%c, " |
22265 | HOST_WIDE_INT_PRINT_HEX ", %s %d", mnemonic, lane_count, | |
1da83cce RS |
22266 | element_char, UINTVAL (info.u.mov.value), shift_op, |
22267 | info.u.mov.shift); | |
ab6501d7 SD |
22268 | else |
22269 | snprintf (templ, sizeof (templ), "%s\t%%0.%d%c, " | |
22270 | HOST_WIDE_INT_PRINT_HEX, mnemonic, lane_count, | |
1da83cce | 22271 | element_char, UINTVAL (info.u.mov.value)); |
ab6501d7 | 22272 | } |
3520f7cc | 22273 | else |
ab6501d7 SD |
22274 | { |
22275 | /* For AARCH64_CHECK_BIC and AARCH64_CHECK_ORR. */ | |
b187677b | 22276 | mnemonic = info.insn == simd_immediate_info::MVN ? "bic" : "orr"; |
1da83cce | 22277 | if (info.u.mov.shift) |
ab6501d7 SD |
22278 | snprintf (templ, sizeof (templ), "%s\t%%0.%d%c, #" |
22279 | HOST_WIDE_INT_PRINT_DEC ", %s #%d", mnemonic, lane_count, | |
1da83cce RS |
22280 | element_char, UINTVAL (info.u.mov.value), "lsl", |
22281 | info.u.mov.shift); | |
ab6501d7 SD |
22282 | else |
22283 | snprintf (templ, sizeof (templ), "%s\t%%0.%d%c, #" | |
22284 | HOST_WIDE_INT_PRINT_DEC, mnemonic, lane_count, | |
1da83cce | 22285 | element_char, UINTVAL (info.u.mov.value)); |
ab6501d7 | 22286 | } |
3520f7cc JG |
22287 | return templ; |
22288 | } | |
22289 | ||
b7342d25 | 22290 | char* |
77e994c9 | 22291 | aarch64_output_scalar_simd_mov_immediate (rtx immediate, scalar_int_mode mode) |
b7342d25 | 22292 | { |
a2170965 TC |
22293 | |
22294 | /* If a floating point number was passed and we desire to use it in an | |
22295 | integer mode do the conversion to integer. */ | |
22296 | if (CONST_DOUBLE_P (immediate) && GET_MODE_CLASS (mode) == MODE_INT) | |
22297 | { | |
22298 | unsigned HOST_WIDE_INT ival; | |
22299 | if (!aarch64_reinterpret_float_as_int (immediate, &ival)) | |
22300 | gcc_unreachable (); | |
22301 | immediate = gen_int_mode (ival, mode); | |
22302 | } | |
22303 | ||
ef4bddc2 | 22304 | machine_mode vmode; |
a2170965 TC |
22305 | /* use a 64 bit mode for everything except for DI/DF mode, where we use |
22306 | a 128 bit vector mode. */ | |
22307 | int width = GET_MODE_BITSIZE (mode) == 64 ? 128 : 64; | |
b7342d25 | 22308 | |
a2170965 | 22309 | vmode = aarch64_simd_container_mode (mode, width); |
b7342d25 | 22310 | rtx v_op = aarch64_simd_gen_const_vector_dup (vmode, INTVAL (immediate)); |
b187677b | 22311 | return aarch64_output_simd_mov_immediate (v_op, width); |
b7342d25 IB |
22312 | } |
22313 | ||
43cacb12 RS |
22314 | /* Return the output string to use for moving immediate CONST_VECTOR |
22315 | into an SVE register. */ | |
22316 | ||
22317 | char * | |
22318 | aarch64_output_sve_mov_immediate (rtx const_vector) | |
22319 | { | |
22320 | static char templ[40]; | |
22321 | struct simd_immediate_info info; | |
22322 | char element_char; | |
22323 | ||
22324 | bool is_valid = aarch64_simd_valid_immediate (const_vector, &info); | |
22325 | gcc_assert (is_valid); | |
22326 | ||
22327 | element_char = sizetochar (GET_MODE_BITSIZE (info.elt_mode)); | |
22328 | ||
1044fa32 RS |
22329 | machine_mode vec_mode = GET_MODE (const_vector); |
22330 | if (aarch64_sve_pred_mode_p (vec_mode)) | |
22331 | { | |
22332 | static char buf[sizeof ("ptrue\t%0.N, vlNNNNN")]; | |
0b1fe8cf RS |
22333 | if (info.insn == simd_immediate_info::MOV) |
22334 | { | |
22335 | gcc_assert (info.u.mov.value == const0_rtx); | |
22336 | snprintf (buf, sizeof (buf), "pfalse\t%%0.b"); | |
22337 | } | |
1044fa32 | 22338 | else |
0b1fe8cf RS |
22339 | { |
22340 | gcc_assert (info.insn == simd_immediate_info::PTRUE); | |
22341 | unsigned int total_bytes; | |
22342 | if (info.u.pattern == AARCH64_SV_ALL | |
22343 | && BYTES_PER_SVE_VECTOR.is_constant (&total_bytes)) | |
22344 | snprintf (buf, sizeof (buf), "ptrue\t%%0.%c, vl%d", element_char, | |
22345 | total_bytes / GET_MODE_SIZE (info.elt_mode)); | |
22346 | else | |
22347 | snprintf (buf, sizeof (buf), "ptrue\t%%0.%c, %s", element_char, | |
22348 | svpattern_token (info.u.pattern)); | |
22349 | } | |
1044fa32 RS |
22350 | return buf; |
22351 | } | |
22352 | ||
1da83cce | 22353 | if (info.insn == simd_immediate_info::INDEX) |
43cacb12 RS |
22354 | { |
22355 | snprintf (templ, sizeof (templ), "index\t%%0.%c, #" | |
22356 | HOST_WIDE_INT_PRINT_DEC ", #" HOST_WIDE_INT_PRINT_DEC, | |
1da83cce RS |
22357 | element_char, INTVAL (info.u.index.base), |
22358 | INTVAL (info.u.index.step)); | |
43cacb12 RS |
22359 | return templ; |
22360 | } | |
22361 | ||
22362 | if (GET_MODE_CLASS (info.elt_mode) == MODE_FLOAT) | |
22363 | { | |
1da83cce RS |
22364 | if (aarch64_float_const_zero_rtx_p (info.u.mov.value)) |
22365 | info.u.mov.value = GEN_INT (0); | |
43cacb12 RS |
22366 | else |
22367 | { | |
22368 | const int buf_size = 20; | |
22369 | char float_buf[buf_size] = {}; | |
22370 | real_to_decimal_for_mode (float_buf, | |
1da83cce | 22371 | CONST_DOUBLE_REAL_VALUE (info.u.mov.value), |
43cacb12 RS |
22372 | buf_size, buf_size, 1, info.elt_mode); |
22373 | ||
22374 | snprintf (templ, sizeof (templ), "fmov\t%%0.%c, #%s", | |
22375 | element_char, float_buf); | |
22376 | return templ; | |
22377 | } | |
22378 | } | |
22379 | ||
22380 | snprintf (templ, sizeof (templ), "mov\t%%0.%c, #" HOST_WIDE_INT_PRINT_DEC, | |
1da83cce | 22381 | element_char, INTVAL (info.u.mov.value)); |
43cacb12 RS |
22382 | return templ; |
22383 | } | |
22384 | ||
624d0f07 RS |
22385 | /* Return the asm template for a PTRUES. CONST_UNSPEC is the |
22386 | aarch64_sve_ptrue_svpattern_immediate that describes the predicate | |
22387 | pattern. */ | |
22388 | ||
22389 | char * | |
22390 | aarch64_output_sve_ptrues (rtx const_unspec) | |
22391 | { | |
22392 | static char templ[40]; | |
22393 | ||
22394 | struct simd_immediate_info info; | |
22395 | bool is_valid = aarch64_simd_valid_immediate (const_unspec, &info); | |
22396 | gcc_assert (is_valid && info.insn == simd_immediate_info::PTRUE); | |
22397 | ||
22398 | char element_char = sizetochar (GET_MODE_BITSIZE (info.elt_mode)); | |
22399 | snprintf (templ, sizeof (templ), "ptrues\t%%0.%c, %s", element_char, | |
22400 | svpattern_token (info.u.pattern)); | |
22401 | return templ; | |
22402 | } | |
22403 | ||
88b08073 JG |
22404 | /* Split operands into moves from op[1] + op[2] into op[0]. */ |
22405 | ||
22406 | void | |
22407 | aarch64_split_combinev16qi (rtx operands[3]) | |
22408 | { | |
22409 | unsigned int dest = REGNO (operands[0]); | |
22410 | unsigned int src1 = REGNO (operands[1]); | |
22411 | unsigned int src2 = REGNO (operands[2]); | |
ef4bddc2 | 22412 | machine_mode halfmode = GET_MODE (operands[1]); |
462a99aa | 22413 | unsigned int halfregs = REG_NREGS (operands[1]); |
88b08073 JG |
22414 | rtx destlo, desthi; |
22415 | ||
22416 | gcc_assert (halfmode == V16QImode); | |
22417 | ||
22418 | if (src1 == dest && src2 == dest + halfregs) | |
22419 | { | |
22420 | /* No-op move. Can't split to nothing; emit something. */ | |
22421 | emit_note (NOTE_INSN_DELETED); | |
22422 | return; | |
22423 | } | |
22424 | ||
22425 | /* Preserve register attributes for variable tracking. */ | |
22426 | destlo = gen_rtx_REG_offset (operands[0], halfmode, dest, 0); | |
22427 | desthi = gen_rtx_REG_offset (operands[0], halfmode, dest + halfregs, | |
22428 | GET_MODE_SIZE (halfmode)); | |
22429 | ||
22430 | /* Special case of reversed high/low parts. */ | |
22431 | if (reg_overlap_mentioned_p (operands[2], destlo) | |
22432 | && reg_overlap_mentioned_p (operands[1], desthi)) | |
22433 | { | |
22434 | emit_insn (gen_xorv16qi3 (operands[1], operands[1], operands[2])); | |
22435 | emit_insn (gen_xorv16qi3 (operands[2], operands[1], operands[2])); | |
22436 | emit_insn (gen_xorv16qi3 (operands[1], operands[1], operands[2])); | |
22437 | } | |
22438 | else if (!reg_overlap_mentioned_p (operands[2], destlo)) | |
22439 | { | |
22440 | /* Try to avoid unnecessary moves if part of the result | |
22441 | is in the right place already. */ | |
22442 | if (src1 != dest) | |
22443 | emit_move_insn (destlo, operands[1]); | |
22444 | if (src2 != dest + halfregs) | |
22445 | emit_move_insn (desthi, operands[2]); | |
22446 | } | |
22447 | else | |
22448 | { | |
22449 | if (src2 != dest + halfregs) | |
22450 | emit_move_insn (desthi, operands[2]); | |
22451 | if (src1 != dest) | |
22452 | emit_move_insn (destlo, operands[1]); | |
22453 | } | |
22454 | } | |
22455 | ||
22456 | /* vec_perm support. */ | |
22457 | ||
88b08073 JG |
22458 | struct expand_vec_perm_d |
22459 | { | |
22460 | rtx target, op0, op1; | |
e3342de4 | 22461 | vec_perm_indices perm; |
ef4bddc2 | 22462 | machine_mode vmode; |
43cacb12 | 22463 | unsigned int vec_flags; |
88b08073 JG |
22464 | bool one_vector_p; |
22465 | bool testing_p; | |
22466 | }; | |
22467 | ||
7efc03fd DP |
22468 | static bool aarch64_expand_vec_perm_const_1 (struct expand_vec_perm_d *d); |
22469 | ||
88b08073 JG |
22470 | /* Generate a variable permutation. */ |
22471 | ||
22472 | static void | |
22473 | aarch64_expand_vec_perm_1 (rtx target, rtx op0, rtx op1, rtx sel) | |
22474 | { | |
ef4bddc2 | 22475 | machine_mode vmode = GET_MODE (target); |
88b08073 JG |
22476 | bool one_vector_p = rtx_equal_p (op0, op1); |
22477 | ||
22478 | gcc_checking_assert (vmode == V8QImode || vmode == V16QImode); | |
22479 | gcc_checking_assert (GET_MODE (op0) == vmode); | |
22480 | gcc_checking_assert (GET_MODE (op1) == vmode); | |
22481 | gcc_checking_assert (GET_MODE (sel) == vmode); | |
22482 | gcc_checking_assert (TARGET_SIMD); | |
22483 | ||
22484 | if (one_vector_p) | |
22485 | { | |
22486 | if (vmode == V8QImode) | |
22487 | { | |
22488 | /* Expand the argument to a V16QI mode by duplicating it. */ | |
22489 | rtx pair = gen_reg_rtx (V16QImode); | |
22490 | emit_insn (gen_aarch64_combinev8qi (pair, op0, op0)); | |
b7e450c9 | 22491 | emit_insn (gen_aarch64_qtbl1v8qi (target, pair, sel)); |
88b08073 JG |
22492 | } |
22493 | else | |
22494 | { | |
b7e450c9 | 22495 | emit_insn (gen_aarch64_qtbl1v16qi (target, op0, sel)); |
88b08073 JG |
22496 | } |
22497 | } | |
22498 | else | |
22499 | { | |
22500 | rtx pair; | |
22501 | ||
22502 | if (vmode == V8QImode) | |
22503 | { | |
22504 | pair = gen_reg_rtx (V16QImode); | |
22505 | emit_insn (gen_aarch64_combinev8qi (pair, op0, op1)); | |
b7e450c9 | 22506 | emit_insn (gen_aarch64_qtbl1v8qi (target, pair, sel)); |
88b08073 JG |
22507 | } |
22508 | else | |
22509 | { | |
66f206b8 | 22510 | pair = gen_reg_rtx (V2x16QImode); |
88b08073 | 22511 | emit_insn (gen_aarch64_combinev16qi (pair, op0, op1)); |
b7e450c9 | 22512 | emit_insn (gen_aarch64_qtbl2v16qi (target, pair, sel)); |
88b08073 JG |
22513 | } |
22514 | } | |
22515 | } | |
22516 | ||
80940017 RS |
22517 | /* Expand a vec_perm with the operands given by TARGET, OP0, OP1 and SEL. |
22518 | NELT is the number of elements in the vector. */ | |
22519 | ||
88b08073 | 22520 | void |
80940017 RS |
22521 | aarch64_expand_vec_perm (rtx target, rtx op0, rtx op1, rtx sel, |
22522 | unsigned int nelt) | |
88b08073 | 22523 | { |
ef4bddc2 | 22524 | machine_mode vmode = GET_MODE (target); |
88b08073 | 22525 | bool one_vector_p = rtx_equal_p (op0, op1); |
f7c4e5b8 | 22526 | rtx mask; |
88b08073 JG |
22527 | |
22528 | /* The TBL instruction does not use a modulo index, so we must take care | |
22529 | of that ourselves. */ | |
f7c4e5b8 AL |
22530 | mask = aarch64_simd_gen_const_vector_dup (vmode, |
22531 | one_vector_p ? nelt - 1 : 2 * nelt - 1); | |
88b08073 JG |
22532 | sel = expand_simple_binop (vmode, AND, sel, mask, NULL, 0, OPTAB_LIB_WIDEN); |
22533 | ||
f7c4e5b8 AL |
22534 | /* For big-endian, we also need to reverse the index within the vector |
22535 | (but not which vector). */ | |
22536 | if (BYTES_BIG_ENDIAN) | |
22537 | { | |
22538 | /* If one_vector_p, mask is a vector of (nelt - 1)'s already. */ | |
22539 | if (!one_vector_p) | |
22540 | mask = aarch64_simd_gen_const_vector_dup (vmode, nelt - 1); | |
22541 | sel = expand_simple_binop (vmode, XOR, sel, mask, | |
22542 | NULL, 0, OPTAB_LIB_WIDEN); | |
22543 | } | |
88b08073 JG |
22544 | aarch64_expand_vec_perm_1 (target, op0, op1, sel); |
22545 | } | |
22546 | ||
43cacb12 RS |
22547 | /* Generate (set TARGET (unspec [OP0 OP1] CODE)). */ |
22548 | ||
22549 | static void | |
22550 | emit_unspec2 (rtx target, int code, rtx op0, rtx op1) | |
22551 | { | |
22552 | emit_insn (gen_rtx_SET (target, | |
22553 | gen_rtx_UNSPEC (GET_MODE (target), | |
22554 | gen_rtvec (2, op0, op1), code))); | |
22555 | } | |
22556 | ||
22557 | /* Expand an SVE vec_perm with the given operands. */ | |
22558 | ||
22559 | void | |
22560 | aarch64_expand_sve_vec_perm (rtx target, rtx op0, rtx op1, rtx sel) | |
22561 | { | |
22562 | machine_mode data_mode = GET_MODE (target); | |
22563 | machine_mode sel_mode = GET_MODE (sel); | |
22564 | /* Enforced by the pattern condition. */ | |
22565 | int nunits = GET_MODE_NUNITS (sel_mode).to_constant (); | |
22566 | ||
22567 | /* Note: vec_perm indices are supposed to wrap when they go beyond the | |
22568 | size of the two value vectors, i.e. the upper bits of the indices | |
22569 | are effectively ignored. SVE TBL instead produces 0 for any | |
22570 | out-of-range indices, so we need to modulo all the vec_perm indices | |
22571 | to ensure they are all in range. */ | |
22572 | rtx sel_reg = force_reg (sel_mode, sel); | |
22573 | ||
22574 | /* Check if the sel only references the first values vector. */ | |
568b9c0e | 22575 | if (CONST_VECTOR_P (sel) |
43cacb12 RS |
22576 | && aarch64_const_vec_all_in_range_p (sel, 0, nunits - 1)) |
22577 | { | |
22578 | emit_unspec2 (target, UNSPEC_TBL, op0, sel_reg); | |
22579 | return; | |
22580 | } | |
22581 | ||
22582 | /* Check if the two values vectors are the same. */ | |
22583 | if (rtx_equal_p (op0, op1)) | |
22584 | { | |
22585 | rtx max_sel = aarch64_simd_gen_const_vector_dup (sel_mode, nunits - 1); | |
22586 | rtx sel_mod = expand_simple_binop (sel_mode, AND, sel_reg, max_sel, | |
22587 | NULL, 0, OPTAB_DIRECT); | |
22588 | emit_unspec2 (target, UNSPEC_TBL, op0, sel_mod); | |
22589 | return; | |
22590 | } | |
22591 | ||
22592 | /* Run TBL on for each value vector and combine the results. */ | |
22593 | ||
22594 | rtx res0 = gen_reg_rtx (data_mode); | |
22595 | rtx res1 = gen_reg_rtx (data_mode); | |
22596 | rtx neg_num_elems = aarch64_simd_gen_const_vector_dup (sel_mode, -nunits); | |
568b9c0e | 22597 | if (!CONST_VECTOR_P (sel) |
43cacb12 RS |
22598 | || !aarch64_const_vec_all_in_range_p (sel, 0, 2 * nunits - 1)) |
22599 | { | |
22600 | rtx max_sel = aarch64_simd_gen_const_vector_dup (sel_mode, | |
22601 | 2 * nunits - 1); | |
22602 | sel_reg = expand_simple_binop (sel_mode, AND, sel_reg, max_sel, | |
22603 | NULL, 0, OPTAB_DIRECT); | |
22604 | } | |
22605 | emit_unspec2 (res0, UNSPEC_TBL, op0, sel_reg); | |
22606 | rtx sel_sub = expand_simple_binop (sel_mode, PLUS, sel_reg, neg_num_elems, | |
22607 | NULL, 0, OPTAB_DIRECT); | |
22608 | emit_unspec2 (res1, UNSPEC_TBL, op1, sel_sub); | |
22609 | if (GET_MODE_CLASS (data_mode) == MODE_VECTOR_INT) | |
22610 | emit_insn (gen_rtx_SET (target, gen_rtx_IOR (data_mode, res0, res1))); | |
22611 | else | |
22612 | emit_unspec2 (target, UNSPEC_IORF, res0, res1); | |
22613 | } | |
22614 | ||
cc4d934f JG |
22615 | /* Recognize patterns suitable for the TRN instructions. */ |
22616 | static bool | |
22617 | aarch64_evpc_trn (struct expand_vec_perm_d *d) | |
22618 | { | |
6a70badb RS |
22619 | HOST_WIDE_INT odd; |
22620 | poly_uint64 nelt = d->perm.length (); | |
cc4d934f | 22621 | rtx out, in0, in1, x; |
ef4bddc2 | 22622 | machine_mode vmode = d->vmode; |
cc4d934f JG |
22623 | |
22624 | if (GET_MODE_UNIT_SIZE (vmode) > 8) | |
22625 | return false; | |
22626 | ||
22627 | /* Note that these are little-endian tests. | |
22628 | We correct for big-endian later. */ | |
6a70badb RS |
22629 | if (!d->perm[0].is_constant (&odd) |
22630 | || (odd != 0 && odd != 1) | |
326ac20e RS |
22631 | || !d->perm.series_p (0, 2, odd, 2) |
22632 | || !d->perm.series_p (1, 2, nelt + odd, 2)) | |
cc4d934f | 22633 | return false; |
cc4d934f JG |
22634 | |
22635 | /* Success! */ | |
22636 | if (d->testing_p) | |
22637 | return true; | |
22638 | ||
22639 | in0 = d->op0; | |
22640 | in1 = d->op1; | |
43cacb12 RS |
22641 | /* We don't need a big-endian lane correction for SVE; see the comment |
22642 | at the head of aarch64-sve.md for details. */ | |
22643 | if (BYTES_BIG_ENDIAN && d->vec_flags == VEC_ADVSIMD) | |
cc4d934f JG |
22644 | { |
22645 | x = in0, in0 = in1, in1 = x; | |
22646 | odd = !odd; | |
22647 | } | |
22648 | out = d->target; | |
22649 | ||
3f8334a5 RS |
22650 | emit_set_insn (out, gen_rtx_UNSPEC (vmode, gen_rtvec (2, in0, in1), |
22651 | odd ? UNSPEC_TRN2 : UNSPEC_TRN1)); | |
cc4d934f JG |
22652 | return true; |
22653 | } | |
22654 | ||
7efc03fd DP |
22655 | /* Try to re-encode the PERM constant so it combines odd and even elements. |
22656 | This rewrites constants such as {0, 1, 4, 5}/V4SF to {0, 2}/V2DI. | |
22657 | We retry with this new constant with the full suite of patterns. */ | |
22658 | static bool | |
22659 | aarch64_evpc_reencode (struct expand_vec_perm_d *d) | |
22660 | { | |
22661 | expand_vec_perm_d newd; | |
22662 | unsigned HOST_WIDE_INT nelt; | |
22663 | ||
22664 | if (d->vec_flags != VEC_ADVSIMD) | |
22665 | return false; | |
22666 | ||
22667 | /* Get the new mode. Always twice the size of the inner | |
22668 | and half the elements. */ | |
22669 | poly_uint64 vec_bits = GET_MODE_BITSIZE (d->vmode); | |
22670 | unsigned int new_elt_bits = GET_MODE_UNIT_BITSIZE (d->vmode) * 2; | |
22671 | auto new_elt_mode = int_mode_for_size (new_elt_bits, false).require (); | |
22672 | machine_mode new_mode = aarch64_simd_container_mode (new_elt_mode, vec_bits); | |
22673 | ||
22674 | if (new_mode == word_mode) | |
22675 | return false; | |
22676 | ||
22677 | /* to_constant is safe since this routine is specific to Advanced SIMD | |
22678 | vectors. */ | |
22679 | nelt = d->perm.length ().to_constant (); | |
22680 | ||
22681 | vec_perm_builder newpermconst; | |
22682 | newpermconst.new_vector (nelt / 2, nelt / 2, 1); | |
22683 | ||
22684 | /* Convert the perm constant if we can. Require even, odd as the pairs. */ | |
22685 | for (unsigned int i = 0; i < nelt; i += 2) | |
22686 | { | |
22687 | poly_int64 elt0 = d->perm[i]; | |
22688 | poly_int64 elt1 = d->perm[i + 1]; | |
22689 | poly_int64 newelt; | |
22690 | if (!multiple_p (elt0, 2, &newelt) || maybe_ne (elt0 + 1, elt1)) | |
22691 | return false; | |
22692 | newpermconst.quick_push (newelt.to_constant ()); | |
22693 | } | |
22694 | newpermconst.finalize (); | |
22695 | ||
22696 | newd.vmode = new_mode; | |
22697 | newd.vec_flags = VEC_ADVSIMD; | |
22698 | newd.target = d->target ? gen_lowpart (new_mode, d->target) : NULL; | |
22699 | newd.op0 = d->op0 ? gen_lowpart (new_mode, d->op0) : NULL; | |
22700 | newd.op1 = d->op1 ? gen_lowpart (new_mode, d->op1) : NULL; | |
22701 | newd.testing_p = d->testing_p; | |
22702 | newd.one_vector_p = d->one_vector_p; | |
22703 | ||
22704 | newd.perm.new_vector (newpermconst, newd.one_vector_p ? 1 : 2, nelt / 2); | |
22705 | return aarch64_expand_vec_perm_const_1 (&newd); | |
22706 | } | |
22707 | ||
cc4d934f JG |
22708 | /* Recognize patterns suitable for the UZP instructions. */ |
22709 | static bool | |
22710 | aarch64_evpc_uzp (struct expand_vec_perm_d *d) | |
22711 | { | |
6a70badb | 22712 | HOST_WIDE_INT odd; |
cc4d934f | 22713 | rtx out, in0, in1, x; |
ef4bddc2 | 22714 | machine_mode vmode = d->vmode; |
cc4d934f JG |
22715 | |
22716 | if (GET_MODE_UNIT_SIZE (vmode) > 8) | |
22717 | return false; | |
22718 | ||
22719 | /* Note that these are little-endian tests. | |
22720 | We correct for big-endian later. */ | |
6a70badb RS |
22721 | if (!d->perm[0].is_constant (&odd) |
22722 | || (odd != 0 && odd != 1) | |
326ac20e | 22723 | || !d->perm.series_p (0, 1, odd, 2)) |
cc4d934f | 22724 | return false; |
cc4d934f JG |
22725 | |
22726 | /* Success! */ | |
22727 | if (d->testing_p) | |
22728 | return true; | |
22729 | ||
22730 | in0 = d->op0; | |
22731 | in1 = d->op1; | |
43cacb12 RS |
22732 | /* We don't need a big-endian lane correction for SVE; see the comment |
22733 | at the head of aarch64-sve.md for details. */ | |
22734 | if (BYTES_BIG_ENDIAN && d->vec_flags == VEC_ADVSIMD) | |
cc4d934f JG |
22735 | { |
22736 | x = in0, in0 = in1, in1 = x; | |
22737 | odd = !odd; | |
22738 | } | |
22739 | out = d->target; | |
22740 | ||
3f8334a5 RS |
22741 | emit_set_insn (out, gen_rtx_UNSPEC (vmode, gen_rtvec (2, in0, in1), |
22742 | odd ? UNSPEC_UZP2 : UNSPEC_UZP1)); | |
cc4d934f JG |
22743 | return true; |
22744 | } | |
22745 | ||
22746 | /* Recognize patterns suitable for the ZIP instructions. */ | |
22747 | static bool | |
22748 | aarch64_evpc_zip (struct expand_vec_perm_d *d) | |
22749 | { | |
6a70badb RS |
22750 | unsigned int high; |
22751 | poly_uint64 nelt = d->perm.length (); | |
cc4d934f | 22752 | rtx out, in0, in1, x; |
ef4bddc2 | 22753 | machine_mode vmode = d->vmode; |
cc4d934f JG |
22754 | |
22755 | if (GET_MODE_UNIT_SIZE (vmode) > 8) | |
22756 | return false; | |
22757 | ||
22758 | /* Note that these are little-endian tests. | |
22759 | We correct for big-endian later. */ | |
6a70badb RS |
22760 | poly_uint64 first = d->perm[0]; |
22761 | if ((maybe_ne (first, 0U) && maybe_ne (first * 2, nelt)) | |
22762 | || !d->perm.series_p (0, 2, first, 1) | |
22763 | || !d->perm.series_p (1, 2, first + nelt, 1)) | |
cc4d934f | 22764 | return false; |
6a70badb | 22765 | high = maybe_ne (first, 0U); |
cc4d934f JG |
22766 | |
22767 | /* Success! */ | |
22768 | if (d->testing_p) | |
22769 | return true; | |
22770 | ||
22771 | in0 = d->op0; | |
22772 | in1 = d->op1; | |
43cacb12 RS |
22773 | /* We don't need a big-endian lane correction for SVE; see the comment |
22774 | at the head of aarch64-sve.md for details. */ | |
22775 | if (BYTES_BIG_ENDIAN && d->vec_flags == VEC_ADVSIMD) | |
cc4d934f JG |
22776 | { |
22777 | x = in0, in0 = in1, in1 = x; | |
22778 | high = !high; | |
22779 | } | |
22780 | out = d->target; | |
22781 | ||
3f8334a5 RS |
22782 | emit_set_insn (out, gen_rtx_UNSPEC (vmode, gen_rtvec (2, in0, in1), |
22783 | high ? UNSPEC_ZIP2 : UNSPEC_ZIP1)); | |
cc4d934f JG |
22784 | return true; |
22785 | } | |
22786 | ||
ae0533da AL |
22787 | /* Recognize patterns for the EXT insn. */ |
22788 | ||
22789 | static bool | |
22790 | aarch64_evpc_ext (struct expand_vec_perm_d *d) | |
22791 | { | |
6a70badb | 22792 | HOST_WIDE_INT location; |
ae0533da AL |
22793 | rtx offset; |
22794 | ||
6a70badb RS |
22795 | /* The first element always refers to the first vector. |
22796 | Check if the extracted indices are increasing by one. */ | |
43cacb12 RS |
22797 | if (d->vec_flags == VEC_SVE_PRED |
22798 | || !d->perm[0].is_constant (&location) | |
6a70badb | 22799 | || !d->perm.series_p (0, 1, location, 1)) |
326ac20e | 22800 | return false; |
ae0533da | 22801 | |
ae0533da AL |
22802 | /* Success! */ |
22803 | if (d->testing_p) | |
22804 | return true; | |
22805 | ||
b31e65bb | 22806 | /* The case where (location == 0) is a no-op for both big- and little-endian, |
43cacb12 | 22807 | and is removed by the mid-end at optimization levels -O1 and higher. |
b31e65bb | 22808 | |
43cacb12 RS |
22809 | We don't need a big-endian lane correction for SVE; see the comment |
22810 | at the head of aarch64-sve.md for details. */ | |
22811 | if (BYTES_BIG_ENDIAN && location != 0 && d->vec_flags == VEC_ADVSIMD) | |
ae0533da AL |
22812 | { |
22813 | /* After setup, we want the high elements of the first vector (stored | |
22814 | at the LSB end of the register), and the low elements of the second | |
22815 | vector (stored at the MSB end of the register). So swap. */ | |
cb5c6c29 | 22816 | std::swap (d->op0, d->op1); |
6a70badb RS |
22817 | /* location != 0 (above), so safe to assume (nelt - location) < nelt. |
22818 | to_constant () is safe since this is restricted to Advanced SIMD | |
22819 | vectors. */ | |
22820 | location = d->perm.length ().to_constant () - location; | |
ae0533da AL |
22821 | } |
22822 | ||
22823 | offset = GEN_INT (location); | |
3f8334a5 RS |
22824 | emit_set_insn (d->target, |
22825 | gen_rtx_UNSPEC (d->vmode, | |
22826 | gen_rtvec (3, d->op0, d->op1, offset), | |
22827 | UNSPEC_EXT)); | |
ae0533da AL |
22828 | return true; |
22829 | } | |
22830 | ||
43cacb12 RS |
22831 | /* Recognize patterns for the REV{64,32,16} insns, which reverse elements |
22832 | within each 64-bit, 32-bit or 16-bit granule. */ | |
923fcec3 AL |
22833 | |
22834 | static bool | |
43cacb12 | 22835 | aarch64_evpc_rev_local (struct expand_vec_perm_d *d) |
923fcec3 | 22836 | { |
6a70badb RS |
22837 | HOST_WIDE_INT diff; |
22838 | unsigned int i, size, unspec; | |
43cacb12 | 22839 | machine_mode pred_mode; |
923fcec3 | 22840 | |
43cacb12 RS |
22841 | if (d->vec_flags == VEC_SVE_PRED |
22842 | || !d->one_vector_p | |
98452668 AC |
22843 | || !d->perm[0].is_constant (&diff) |
22844 | || !diff) | |
923fcec3 AL |
22845 | return false; |
22846 | ||
6c3ce63b RS |
22847 | if (d->vec_flags & VEC_SVE_DATA) |
22848 | size = (diff + 1) * aarch64_sve_container_bits (d->vmode); | |
22849 | else | |
22850 | size = (diff + 1) * GET_MODE_UNIT_BITSIZE (d->vmode); | |
22851 | if (size == 64) | |
43cacb12 RS |
22852 | { |
22853 | unspec = UNSPEC_REV64; | |
22854 | pred_mode = VNx2BImode; | |
22855 | } | |
6c3ce63b | 22856 | else if (size == 32) |
43cacb12 RS |
22857 | { |
22858 | unspec = UNSPEC_REV32; | |
22859 | pred_mode = VNx4BImode; | |
22860 | } | |
6c3ce63b | 22861 | else if (size == 16) |
43cacb12 RS |
22862 | { |
22863 | unspec = UNSPEC_REV16; | |
22864 | pred_mode = VNx8BImode; | |
22865 | } | |
3f8334a5 RS |
22866 | else |
22867 | return false; | |
923fcec3 | 22868 | |
326ac20e RS |
22869 | unsigned int step = diff + 1; |
22870 | for (i = 0; i < step; ++i) | |
22871 | if (!d->perm.series_p (i, step, diff - i, step)) | |
22872 | return false; | |
923fcec3 AL |
22873 | |
22874 | /* Success! */ | |
22875 | if (d->testing_p) | |
22876 | return true; | |
22877 | ||
6c3ce63b RS |
22878 | if (d->vec_flags & VEC_SVE_DATA) |
22879 | { | |
22880 | rtx pred = aarch64_ptrue_reg (pred_mode); | |
22881 | emit_insn (gen_aarch64_sve_revbhw (d->vmode, pred_mode, | |
22882 | d->target, pred, d->op0)); | |
d7a09c44 | 22883 | return true; |
43cacb12 | 22884 | } |
d7a09c44 | 22885 | rtx src = gen_rtx_UNSPEC (d->vmode, gen_rtvec (1, d->op0), unspec); |
43cacb12 RS |
22886 | emit_set_insn (d->target, src); |
22887 | return true; | |
22888 | } | |
22889 | ||
22890 | /* Recognize patterns for the REV insn, which reverses elements within | |
22891 | a full vector. */ | |
22892 | ||
22893 | static bool | |
22894 | aarch64_evpc_rev_global (struct expand_vec_perm_d *d) | |
22895 | { | |
22896 | poly_uint64 nelt = d->perm.length (); | |
22897 | ||
28350fd1 | 22898 | if (!d->one_vector_p || d->vec_flags == VEC_ADVSIMD) |
43cacb12 RS |
22899 | return false; |
22900 | ||
22901 | if (!d->perm.series_p (0, 1, nelt - 1, -1)) | |
22902 | return false; | |
22903 | ||
22904 | /* Success! */ | |
22905 | if (d->testing_p) | |
22906 | return true; | |
22907 | ||
22908 | rtx src = gen_rtx_UNSPEC (d->vmode, gen_rtvec (1, d->op0), UNSPEC_REV); | |
22909 | emit_set_insn (d->target, src); | |
923fcec3 AL |
22910 | return true; |
22911 | } | |
22912 | ||
91bd4114 JG |
22913 | static bool |
22914 | aarch64_evpc_dup (struct expand_vec_perm_d *d) | |
22915 | { | |
91bd4114 JG |
22916 | rtx out = d->target; |
22917 | rtx in0; | |
6a70badb | 22918 | HOST_WIDE_INT elt; |
ef4bddc2 | 22919 | machine_mode vmode = d->vmode; |
91bd4114 JG |
22920 | rtx lane; |
22921 | ||
43cacb12 RS |
22922 | if (d->vec_flags == VEC_SVE_PRED |
22923 | || d->perm.encoding ().encoded_nelts () != 1 | |
6a70badb | 22924 | || !d->perm[0].is_constant (&elt)) |
326ac20e RS |
22925 | return false; |
22926 | ||
6c3ce63b RS |
22927 | if ((d->vec_flags & VEC_SVE_DATA) |
22928 | && elt * (aarch64_sve_container_bits (vmode) / 8) >= 64) | |
43cacb12 RS |
22929 | return false; |
22930 | ||
326ac20e RS |
22931 | /* Success! */ |
22932 | if (d->testing_p) | |
22933 | return true; | |
22934 | ||
91bd4114 JG |
22935 | /* The generic preparation in aarch64_expand_vec_perm_const_1 |
22936 | swaps the operand order and the permute indices if it finds | |
22937 | d->perm[0] to be in the second operand. Thus, we can always | |
22938 | use d->op0 and need not do any extra arithmetic to get the | |
22939 | correct lane number. */ | |
22940 | in0 = d->op0; | |
f901401e | 22941 | lane = GEN_INT (elt); /* The pattern corrects for big-endian. */ |
91bd4114 | 22942 | |
3f8334a5 RS |
22943 | rtx parallel = gen_rtx_PARALLEL (vmode, gen_rtvec (1, lane)); |
22944 | rtx select = gen_rtx_VEC_SELECT (GET_MODE_INNER (vmode), in0, parallel); | |
22945 | emit_set_insn (out, gen_rtx_VEC_DUPLICATE (vmode, select)); | |
91bd4114 JG |
22946 | return true; |
22947 | } | |
22948 | ||
88b08073 JG |
22949 | static bool |
22950 | aarch64_evpc_tbl (struct expand_vec_perm_d *d) | |
22951 | { | |
43cacb12 | 22952 | rtx rperm[MAX_COMPILE_TIME_VEC_BYTES], sel; |
ef4bddc2 | 22953 | machine_mode vmode = d->vmode; |
6a70badb RS |
22954 | |
22955 | /* Make sure that the indices are constant. */ | |
22956 | unsigned int encoded_nelts = d->perm.encoding ().encoded_nelts (); | |
22957 | for (unsigned int i = 0; i < encoded_nelts; ++i) | |
22958 | if (!d->perm[i].is_constant ()) | |
22959 | return false; | |
88b08073 | 22960 | |
88b08073 JG |
22961 | if (d->testing_p) |
22962 | return true; | |
22963 | ||
22964 | /* Generic code will try constant permutation twice. Once with the | |
22965 | original mode and again with the elements lowered to QImode. | |
22966 | So wait and don't do the selector expansion ourselves. */ | |
22967 | if (vmode != V8QImode && vmode != V16QImode) | |
22968 | return false; | |
22969 | ||
6a70badb RS |
22970 | /* to_constant is safe since this routine is specific to Advanced SIMD |
22971 | vectors. */ | |
22972 | unsigned int nelt = d->perm.length ().to_constant (); | |
22973 | for (unsigned int i = 0; i < nelt; ++i) | |
22974 | /* If big-endian and two vectors we end up with a weird mixed-endian | |
22975 | mode on NEON. Reverse the index within each word but not the word | |
22976 | itself. to_constant is safe because we checked is_constant above. */ | |
22977 | rperm[i] = GEN_INT (BYTES_BIG_ENDIAN | |
22978 | ? d->perm[i].to_constant () ^ (nelt - 1) | |
22979 | : d->perm[i].to_constant ()); | |
bbcc9c00 | 22980 | |
88b08073 JG |
22981 | sel = gen_rtx_CONST_VECTOR (vmode, gen_rtvec_v (nelt, rperm)); |
22982 | sel = force_reg (vmode, sel); | |
22983 | ||
22984 | aarch64_expand_vec_perm_1 (d->target, d->op0, d->op1, sel); | |
22985 | return true; | |
22986 | } | |
22987 | ||
43cacb12 RS |
22988 | /* Try to implement D using an SVE TBL instruction. */ |
22989 | ||
22990 | static bool | |
22991 | aarch64_evpc_sve_tbl (struct expand_vec_perm_d *d) | |
22992 | { | |
22993 | unsigned HOST_WIDE_INT nelt; | |
22994 | ||
22995 | /* Permuting two variable-length vectors could overflow the | |
22996 | index range. */ | |
22997 | if (!d->one_vector_p && !d->perm.length ().is_constant (&nelt)) | |
22998 | return false; | |
22999 | ||
23000 | if (d->testing_p) | |
23001 | return true; | |
23002 | ||
d083ee47 | 23003 | machine_mode sel_mode = related_int_vector_mode (d->vmode).require (); |
43cacb12 | 23004 | rtx sel = vec_perm_indices_to_rtx (sel_mode, d->perm); |
e25c95ef RS |
23005 | if (d->one_vector_p) |
23006 | emit_unspec2 (d->target, UNSPEC_TBL, d->op0, force_reg (sel_mode, sel)); | |
23007 | else | |
23008 | aarch64_expand_sve_vec_perm (d->target, d->op0, d->op1, sel); | |
43cacb12 RS |
23009 | return true; |
23010 | } | |
23011 | ||
9556ef20 PK |
23012 | /* Try to implement D using SVE SEL instruction. */ |
23013 | ||
23014 | static bool | |
23015 | aarch64_evpc_sel (struct expand_vec_perm_d *d) | |
23016 | { | |
23017 | machine_mode vmode = d->vmode; | |
23018 | int unit_size = GET_MODE_UNIT_SIZE (vmode); | |
23019 | ||
23020 | if (d->vec_flags != VEC_SVE_DATA | |
23021 | || unit_size > 8) | |
23022 | return false; | |
23023 | ||
23024 | int n_patterns = d->perm.encoding ().npatterns (); | |
23025 | poly_int64 vec_len = d->perm.length (); | |
23026 | ||
23027 | for (int i = 0; i < n_patterns; ++i) | |
23028 | if (!known_eq (d->perm[i], i) | |
23029 | && !known_eq (d->perm[i], vec_len + i)) | |
23030 | return false; | |
23031 | ||
23032 | for (int i = n_patterns; i < n_patterns * 2; i++) | |
23033 | if (!d->perm.series_p (i, n_patterns, i, n_patterns) | |
23034 | && !d->perm.series_p (i, n_patterns, vec_len + i, n_patterns)) | |
23035 | return false; | |
23036 | ||
23037 | if (d->testing_p) | |
23038 | return true; | |
23039 | ||
cc68f7c2 | 23040 | machine_mode pred_mode = aarch64_sve_pred_mode (vmode); |
9556ef20 | 23041 | |
b2f5b380 | 23042 | /* Build a predicate that is true when op0 elements should be used. */ |
9556ef20 PK |
23043 | rtx_vector_builder builder (pred_mode, n_patterns, 2); |
23044 | for (int i = 0; i < n_patterns * 2; i++) | |
23045 | { | |
23046 | rtx elem = known_eq (d->perm[i], i) ? CONST1_RTX (BImode) | |
23047 | : CONST0_RTX (BImode); | |
23048 | builder.quick_push (elem); | |
23049 | } | |
23050 | ||
23051 | rtx const_vec = builder.build (); | |
23052 | rtx pred = force_reg (pred_mode, const_vec); | |
b2f5b380 RS |
23053 | /* TARGET = PRED ? OP0 : OP1. */ |
23054 | emit_insn (gen_vcond_mask (vmode, vmode, d->target, d->op0, d->op1, pred)); | |
9556ef20 PK |
23055 | return true; |
23056 | } | |
23057 | ||
c9c87e6f DP |
23058 | /* Recognize patterns suitable for the INS instructions. */ |
23059 | static bool | |
23060 | aarch64_evpc_ins (struct expand_vec_perm_d *d) | |
23061 | { | |
23062 | machine_mode mode = d->vmode; | |
23063 | unsigned HOST_WIDE_INT nelt; | |
23064 | ||
23065 | if (d->vec_flags != VEC_ADVSIMD) | |
23066 | return false; | |
23067 | ||
23068 | /* to_constant is safe since this routine is specific to Advanced SIMD | |
23069 | vectors. */ | |
23070 | nelt = d->perm.length ().to_constant (); | |
23071 | rtx insv = d->op0; | |
23072 | ||
23073 | HOST_WIDE_INT idx = -1; | |
23074 | ||
23075 | for (unsigned HOST_WIDE_INT i = 0; i < nelt; i++) | |
23076 | { | |
23077 | HOST_WIDE_INT elt; | |
23078 | if (!d->perm[i].is_constant (&elt)) | |
23079 | return false; | |
23080 | if (elt == (HOST_WIDE_INT) i) | |
23081 | continue; | |
23082 | if (idx != -1) | |
23083 | { | |
23084 | idx = -1; | |
23085 | break; | |
23086 | } | |
23087 | idx = i; | |
23088 | } | |
23089 | ||
23090 | if (idx == -1) | |
23091 | { | |
23092 | insv = d->op1; | |
23093 | for (unsigned HOST_WIDE_INT i = 0; i < nelt; i++) | |
23094 | { | |
23095 | if (d->perm[i].to_constant () == (HOST_WIDE_INT) (i + nelt)) | |
23096 | continue; | |
23097 | if (idx != -1) | |
23098 | return false; | |
23099 | idx = i; | |
23100 | } | |
23101 | ||
23102 | if (idx == -1) | |
23103 | return false; | |
23104 | } | |
23105 | ||
23106 | if (d->testing_p) | |
23107 | return true; | |
23108 | ||
23109 | gcc_assert (idx != -1); | |
23110 | ||
23111 | unsigned extractindex = d->perm[idx].to_constant (); | |
23112 | rtx extractv = d->op0; | |
23113 | if (extractindex >= nelt) | |
23114 | { | |
23115 | extractv = d->op1; | |
23116 | extractindex -= nelt; | |
23117 | } | |
23118 | gcc_assert (extractindex < nelt); | |
23119 | ||
c9c87e6f DP |
23120 | insn_code icode = code_for_aarch64_simd_vec_copy_lane (mode); |
23121 | expand_operand ops[5]; | |
23122 | create_output_operand (&ops[0], d->target, mode); | |
52fa7717 | 23123 | create_input_operand (&ops[1], insv, mode); |
c9c87e6f DP |
23124 | create_integer_operand (&ops[2], 1 << idx); |
23125 | create_input_operand (&ops[3], extractv, mode); | |
23126 | create_integer_operand (&ops[4], extractindex); | |
23127 | expand_insn (icode, 5, ops); | |
23128 | ||
23129 | return true; | |
23130 | } | |
23131 | ||
88b08073 JG |
23132 | static bool |
23133 | aarch64_expand_vec_perm_const_1 (struct expand_vec_perm_d *d) | |
23134 | { | |
23135 | /* The pattern matching functions above are written to look for a small | |
23136 | number to begin the sequence (0, 1, N/2). If we begin with an index | |
23137 | from the second operand, we can swap the operands. */ | |
6a70badb RS |
23138 | poly_int64 nelt = d->perm.length (); |
23139 | if (known_ge (d->perm[0], nelt)) | |
88b08073 | 23140 | { |
e3342de4 | 23141 | d->perm.rotate_inputs (1); |
cb5c6c29 | 23142 | std::swap (d->op0, d->op1); |
88b08073 JG |
23143 | } |
23144 | ||
43cacb12 RS |
23145 | if ((d->vec_flags == VEC_ADVSIMD |
23146 | || d->vec_flags == VEC_SVE_DATA | |
6c3ce63b | 23147 | || d->vec_flags == (VEC_SVE_DATA | VEC_PARTIAL) |
43cacb12 RS |
23148 | || d->vec_flags == VEC_SVE_PRED) |
23149 | && known_gt (nelt, 1)) | |
cc4d934f | 23150 | { |
43cacb12 RS |
23151 | if (aarch64_evpc_rev_local (d)) |
23152 | return true; | |
23153 | else if (aarch64_evpc_rev_global (d)) | |
923fcec3 AL |
23154 | return true; |
23155 | else if (aarch64_evpc_ext (d)) | |
ae0533da | 23156 | return true; |
f901401e AL |
23157 | else if (aarch64_evpc_dup (d)) |
23158 | return true; | |
ae0533da | 23159 | else if (aarch64_evpc_zip (d)) |
cc4d934f JG |
23160 | return true; |
23161 | else if (aarch64_evpc_uzp (d)) | |
23162 | return true; | |
23163 | else if (aarch64_evpc_trn (d)) | |
23164 | return true; | |
9556ef20 PK |
23165 | else if (aarch64_evpc_sel (d)) |
23166 | return true; | |
c9c87e6f DP |
23167 | else if (aarch64_evpc_ins (d)) |
23168 | return true; | |
7efc03fd DP |
23169 | else if (aarch64_evpc_reencode (d)) |
23170 | return true; | |
43cacb12 RS |
23171 | if (d->vec_flags == VEC_SVE_DATA) |
23172 | return aarch64_evpc_sve_tbl (d); | |
4ec8bb67 | 23173 | else if (d->vec_flags == VEC_ADVSIMD) |
43cacb12 | 23174 | return aarch64_evpc_tbl (d); |
cc4d934f | 23175 | } |
88b08073 JG |
23176 | return false; |
23177 | } | |
23178 | ||
f151c9e1 | 23179 | /* Implement TARGET_VECTORIZE_VEC_PERM_CONST. */ |
88b08073 | 23180 | |
f151c9e1 RS |
23181 | static bool |
23182 | aarch64_vectorize_vec_perm_const (machine_mode vmode, rtx target, rtx op0, | |
23183 | rtx op1, const vec_perm_indices &sel) | |
88b08073 JG |
23184 | { |
23185 | struct expand_vec_perm_d d; | |
88b08073 | 23186 | |
326ac20e | 23187 | /* Check whether the mask can be applied to a single vector. */ |
e25c95ef RS |
23188 | if (sel.ninputs () == 1 |
23189 | || (op0 && rtx_equal_p (op0, op1))) | |
326ac20e RS |
23190 | d.one_vector_p = true; |
23191 | else if (sel.all_from_input_p (0)) | |
88b08073 | 23192 | { |
326ac20e RS |
23193 | d.one_vector_p = true; |
23194 | op1 = op0; | |
88b08073 | 23195 | } |
326ac20e | 23196 | else if (sel.all_from_input_p (1)) |
88b08073 | 23197 | { |
88b08073 | 23198 | d.one_vector_p = true; |
326ac20e | 23199 | op0 = op1; |
88b08073 | 23200 | } |
326ac20e RS |
23201 | else |
23202 | d.one_vector_p = false; | |
88b08073 | 23203 | |
326ac20e RS |
23204 | d.perm.new_vector (sel.encoding (), d.one_vector_p ? 1 : 2, |
23205 | sel.nelts_per_input ()); | |
23206 | d.vmode = vmode; | |
43cacb12 | 23207 | d.vec_flags = aarch64_classify_vector_mode (d.vmode); |
326ac20e | 23208 | d.target = target; |
b1d1e2b5 JJ |
23209 | d.op0 = op0 ? force_reg (vmode, op0) : NULL_RTX; |
23210 | if (op0 == op1) | |
23211 | d.op1 = d.op0; | |
23212 | else | |
23213 | d.op1 = op1 ? force_reg (vmode, op1) : NULL_RTX; | |
326ac20e | 23214 | d.testing_p = !target; |
e3342de4 | 23215 | |
f151c9e1 RS |
23216 | if (!d.testing_p) |
23217 | return aarch64_expand_vec_perm_const_1 (&d); | |
88b08073 | 23218 | |
326ac20e | 23219 | rtx_insn *last = get_last_insn (); |
f151c9e1 | 23220 | bool ret = aarch64_expand_vec_perm_const_1 (&d); |
326ac20e | 23221 | gcc_assert (last == get_last_insn ()); |
88b08073 JG |
23222 | |
23223 | return ret; | |
23224 | } | |
23225 | ||
73e3da51 RS |
23226 | /* Generate a byte permute mask for a register of mode MODE, |
23227 | which has NUNITS units. */ | |
23228 | ||
668046d1 | 23229 | rtx |
73e3da51 | 23230 | aarch64_reverse_mask (machine_mode mode, unsigned int nunits) |
668046d1 DS |
23231 | { |
23232 | /* We have to reverse each vector because we dont have | |
23233 | a permuted load that can reverse-load according to ABI rules. */ | |
23234 | rtx mask; | |
23235 | rtvec v = rtvec_alloc (16); | |
73e3da51 RS |
23236 | unsigned int i, j; |
23237 | unsigned int usize = GET_MODE_UNIT_SIZE (mode); | |
668046d1 DS |
23238 | |
23239 | gcc_assert (BYTES_BIG_ENDIAN); | |
23240 | gcc_assert (AARCH64_VALID_SIMD_QREG_MODE (mode)); | |
23241 | ||
23242 | for (i = 0; i < nunits; i++) | |
23243 | for (j = 0; j < usize; j++) | |
23244 | RTVEC_ELT (v, i * usize + j) = GEN_INT ((i + 1) * usize - 1 - j); | |
23245 | mask = gen_rtx_CONST_VECTOR (V16QImode, v); | |
23246 | return force_reg (V16QImode, mask); | |
23247 | } | |
23248 | ||
4a942af6 | 23249 | /* Expand an SVE integer comparison using the SVE equivalent of: |
f22d7973 | 23250 | |
4a942af6 RS |
23251 | (set TARGET (CODE OP0 OP1)). */ |
23252 | ||
23253 | void | |
23254 | aarch64_expand_sve_vec_cmp_int (rtx target, rtx_code code, rtx op0, rtx op1) | |
f22d7973 | 23255 | { |
4a942af6 RS |
23256 | machine_mode pred_mode = GET_MODE (target); |
23257 | machine_mode data_mode = GET_MODE (op0); | |
00fa90d9 RS |
23258 | rtx res = aarch64_sve_emit_int_cmp (target, pred_mode, code, data_mode, |
23259 | op0, op1); | |
23260 | if (!rtx_equal_p (target, res)) | |
23261 | emit_move_insn (target, res); | |
f22d7973 RS |
23262 | } |
23263 | ||
43cacb12 RS |
23264 | /* Return the UNSPEC_COND_* code for comparison CODE. */ |
23265 | ||
23266 | static unsigned int | |
23267 | aarch64_unspec_cond_code (rtx_code code) | |
23268 | { | |
23269 | switch (code) | |
23270 | { | |
23271 | case NE: | |
cb18e86d | 23272 | return UNSPEC_COND_FCMNE; |
43cacb12 | 23273 | case EQ: |
cb18e86d | 23274 | return UNSPEC_COND_FCMEQ; |
43cacb12 | 23275 | case LT: |
cb18e86d | 23276 | return UNSPEC_COND_FCMLT; |
43cacb12 | 23277 | case GT: |
cb18e86d | 23278 | return UNSPEC_COND_FCMGT; |
43cacb12 | 23279 | case LE: |
cb18e86d | 23280 | return UNSPEC_COND_FCMLE; |
43cacb12 | 23281 | case GE: |
cb18e86d | 23282 | return UNSPEC_COND_FCMGE; |
4a942af6 RS |
23283 | case UNORDERED: |
23284 | return UNSPEC_COND_FCMUO; | |
43cacb12 RS |
23285 | default: |
23286 | gcc_unreachable (); | |
23287 | } | |
23288 | } | |
23289 | ||
f22d7973 | 23290 | /* Emit: |
43cacb12 | 23291 | |
4a942af6 | 23292 | (set TARGET (unspec [PRED KNOWN_PTRUE_P OP0 OP1] UNSPEC_COND_<X>)) |
f22d7973 | 23293 | |
4a942af6 RS |
23294 | where <X> is the operation associated with comparison CODE. |
23295 | KNOWN_PTRUE_P is true if PRED is known to be a PTRUE. */ | |
f22d7973 RS |
23296 | |
23297 | static void | |
4a942af6 RS |
23298 | aarch64_emit_sve_fp_cond (rtx target, rtx_code code, rtx pred, |
23299 | bool known_ptrue_p, rtx op0, rtx op1) | |
43cacb12 | 23300 | { |
4a942af6 | 23301 | rtx flag = gen_int_mode (known_ptrue_p, SImode); |
f22d7973 | 23302 | rtx unspec = gen_rtx_UNSPEC (GET_MODE (pred), |
4a942af6 | 23303 | gen_rtvec (4, pred, flag, op0, op1), |
f22d7973 RS |
23304 | aarch64_unspec_cond_code (code)); |
23305 | emit_set_insn (target, unspec); | |
43cacb12 RS |
23306 | } |
23307 | ||
f22d7973 | 23308 | /* Emit the SVE equivalent of: |
43cacb12 | 23309 | |
4a942af6 RS |
23310 | (set TMP1 (unspec [PRED KNOWN_PTRUE_P OP0 OP1] UNSPEC_COND_<X1>)) |
23311 | (set TMP2 (unspec [PRED KNOWN_PTRUE_P OP0 OP1] UNSPEC_COND_<X2>)) | |
f22d7973 | 23312 | (set TARGET (ior:PRED_MODE TMP1 TMP2)) |
43cacb12 | 23313 | |
4a942af6 RS |
23314 | where <Xi> is the operation associated with comparison CODEi. |
23315 | KNOWN_PTRUE_P is true if PRED is known to be a PTRUE. */ | |
43cacb12 RS |
23316 | |
23317 | static void | |
4a942af6 RS |
23318 | aarch64_emit_sve_or_fp_conds (rtx target, rtx_code code1, rtx_code code2, |
23319 | rtx pred, bool known_ptrue_p, rtx op0, rtx op1) | |
43cacb12 | 23320 | { |
4a942af6 | 23321 | machine_mode pred_mode = GET_MODE (pred); |
43cacb12 | 23322 | rtx tmp1 = gen_reg_rtx (pred_mode); |
4a942af6 | 23323 | aarch64_emit_sve_fp_cond (tmp1, code1, pred, known_ptrue_p, op0, op1); |
43cacb12 | 23324 | rtx tmp2 = gen_reg_rtx (pred_mode); |
4a942af6 | 23325 | aarch64_emit_sve_fp_cond (tmp2, code2, pred, known_ptrue_p, op0, op1); |
f22d7973 | 23326 | aarch64_emit_binop (target, ior_optab, tmp1, tmp2); |
43cacb12 RS |
23327 | } |
23328 | ||
f22d7973 | 23329 | /* Emit the SVE equivalent of: |
43cacb12 | 23330 | |
4a942af6 | 23331 | (set TMP (unspec [PRED KNOWN_PTRUE_P OP0 OP1] UNSPEC_COND_<X>)) |
f22d7973 | 23332 | (set TARGET (not TMP)) |
43cacb12 | 23333 | |
4a942af6 RS |
23334 | where <X> is the operation associated with comparison CODE. |
23335 | KNOWN_PTRUE_P is true if PRED is known to be a PTRUE. */ | |
43cacb12 RS |
23336 | |
23337 | static void | |
4a942af6 RS |
23338 | aarch64_emit_sve_invert_fp_cond (rtx target, rtx_code code, rtx pred, |
23339 | bool known_ptrue_p, rtx op0, rtx op1) | |
43cacb12 | 23340 | { |
4a942af6 | 23341 | machine_mode pred_mode = GET_MODE (pred); |
f22d7973 | 23342 | rtx tmp = gen_reg_rtx (pred_mode); |
4a942af6 | 23343 | aarch64_emit_sve_fp_cond (tmp, code, pred, known_ptrue_p, op0, op1); |
f22d7973 | 23344 | aarch64_emit_unop (target, one_cmpl_optab, tmp); |
43cacb12 RS |
23345 | } |
23346 | ||
f22d7973 | 23347 | /* Expand an SVE floating-point comparison using the SVE equivalent of: |
43cacb12 | 23348 | |
f22d7973 | 23349 | (set TARGET (CODE OP0 OP1)) |
43cacb12 RS |
23350 | |
23351 | If CAN_INVERT_P is true, the caller can also handle inverted results; | |
23352 | return true if the result is in fact inverted. */ | |
23353 | ||
23354 | bool | |
23355 | aarch64_expand_sve_vec_cmp_float (rtx target, rtx_code code, | |
23356 | rtx op0, rtx op1, bool can_invert_p) | |
23357 | { | |
23358 | machine_mode pred_mode = GET_MODE (target); | |
23359 | machine_mode data_mode = GET_MODE (op0); | |
23360 | ||
16de3637 | 23361 | rtx ptrue = aarch64_ptrue_reg (pred_mode); |
43cacb12 RS |
23362 | switch (code) |
23363 | { | |
23364 | case UNORDERED: | |
23365 | /* UNORDERED has no immediate form. */ | |
23366 | op1 = force_reg (data_mode, op1); | |
f22d7973 | 23367 | /* fall through */ |
43cacb12 RS |
23368 | case LT: |
23369 | case LE: | |
23370 | case GT: | |
23371 | case GE: | |
23372 | case EQ: | |
23373 | case NE: | |
f22d7973 RS |
23374 | { |
23375 | /* There is native support for the comparison. */ | |
4a942af6 | 23376 | aarch64_emit_sve_fp_cond (target, code, ptrue, true, op0, op1); |
f22d7973 RS |
23377 | return false; |
23378 | } | |
43cacb12 RS |
23379 | |
23380 | case LTGT: | |
23381 | /* This is a trapping operation (LT or GT). */ | |
4a942af6 | 23382 | aarch64_emit_sve_or_fp_conds (target, LT, GT, ptrue, true, op0, op1); |
43cacb12 RS |
23383 | return false; |
23384 | ||
23385 | case UNEQ: | |
23386 | if (!flag_trapping_math) | |
23387 | { | |
23388 | /* This would trap for signaling NaNs. */ | |
23389 | op1 = force_reg (data_mode, op1); | |
4a942af6 RS |
23390 | aarch64_emit_sve_or_fp_conds (target, UNORDERED, EQ, |
23391 | ptrue, true, op0, op1); | |
43cacb12 RS |
23392 | return false; |
23393 | } | |
23394 | /* fall through */ | |
43cacb12 RS |
23395 | case UNLT: |
23396 | case UNLE: | |
23397 | case UNGT: | |
23398 | case UNGE: | |
f22d7973 RS |
23399 | if (flag_trapping_math) |
23400 | { | |
23401 | /* Work out which elements are ordered. */ | |
23402 | rtx ordered = gen_reg_rtx (pred_mode); | |
23403 | op1 = force_reg (data_mode, op1); | |
4a942af6 RS |
23404 | aarch64_emit_sve_invert_fp_cond (ordered, UNORDERED, |
23405 | ptrue, true, op0, op1); | |
f22d7973 RS |
23406 | |
23407 | /* Test the opposite condition for the ordered elements, | |
23408 | then invert the result. */ | |
23409 | if (code == UNEQ) | |
23410 | code = NE; | |
23411 | else | |
23412 | code = reverse_condition_maybe_unordered (code); | |
23413 | if (can_invert_p) | |
23414 | { | |
4a942af6 RS |
23415 | aarch64_emit_sve_fp_cond (target, code, |
23416 | ordered, false, op0, op1); | |
f22d7973 RS |
23417 | return true; |
23418 | } | |
4a942af6 RS |
23419 | aarch64_emit_sve_invert_fp_cond (target, code, |
23420 | ordered, false, op0, op1); | |
f22d7973 RS |
23421 | return false; |
23422 | } | |
23423 | break; | |
23424 | ||
23425 | case ORDERED: | |
23426 | /* ORDERED has no immediate form. */ | |
23427 | op1 = force_reg (data_mode, op1); | |
23428 | break; | |
43cacb12 RS |
23429 | |
23430 | default: | |
23431 | gcc_unreachable (); | |
23432 | } | |
f22d7973 RS |
23433 | |
23434 | /* There is native support for the inverse comparison. */ | |
23435 | code = reverse_condition_maybe_unordered (code); | |
23436 | if (can_invert_p) | |
23437 | { | |
4a942af6 | 23438 | aarch64_emit_sve_fp_cond (target, code, ptrue, true, op0, op1); |
f22d7973 RS |
23439 | return true; |
23440 | } | |
4a942af6 | 23441 | aarch64_emit_sve_invert_fp_cond (target, code, ptrue, true, op0, op1); |
f22d7973 | 23442 | return false; |
43cacb12 RS |
23443 | } |
23444 | ||
23445 | /* Expand an SVE vcond pattern with operands OPS. DATA_MODE is the mode | |
23446 | of the data being selected and CMP_MODE is the mode of the values being | |
23447 | compared. */ | |
23448 | ||
23449 | void | |
23450 | aarch64_expand_sve_vcond (machine_mode data_mode, machine_mode cmp_mode, | |
23451 | rtx *ops) | |
23452 | { | |
10116ec1 | 23453 | machine_mode pred_mode = aarch64_get_mask_mode (cmp_mode).require (); |
43cacb12 RS |
23454 | rtx pred = gen_reg_rtx (pred_mode); |
23455 | if (FLOAT_MODE_P (cmp_mode)) | |
23456 | { | |
23457 | if (aarch64_expand_sve_vec_cmp_float (pred, GET_CODE (ops[3]), | |
23458 | ops[4], ops[5], true)) | |
23459 | std::swap (ops[1], ops[2]); | |
23460 | } | |
23461 | else | |
23462 | aarch64_expand_sve_vec_cmp_int (pred, GET_CODE (ops[3]), ops[4], ops[5]); | |
23463 | ||
d29f7dd5 RS |
23464 | if (!aarch64_sve_reg_or_dup_imm (ops[1], data_mode)) |
23465 | ops[1] = force_reg (data_mode, ops[1]); | |
23466 | /* The "false" value can only be zero if the "true" value is a constant. */ | |
23467 | if (register_operand (ops[1], data_mode) | |
23468 | || !aarch64_simd_reg_or_zero (ops[2], data_mode)) | |
23469 | ops[2] = force_reg (data_mode, ops[2]); | |
23470 | ||
43cacb12 RS |
23471 | rtvec vec = gen_rtvec (3, pred, ops[1], ops[2]); |
23472 | emit_set_insn (ops[0], gen_rtx_UNSPEC (data_mode, vec, UNSPEC_SEL)); | |
23473 | } | |
23474 | ||
99e1629f RS |
23475 | /* Implement TARGET_MODES_TIEABLE_P. In principle we should always return |
23476 | true. However due to issues with register allocation it is preferable | |
23477 | to avoid tieing integer scalar and FP scalar modes. Executing integer | |
23478 | operations in general registers is better than treating them as scalar | |
23479 | vector operations. This reduces latency and avoids redundant int<->FP | |
23480 | moves. So tie modes if they are either the same class, or vector modes | |
23481 | with other vector modes, vector structs or any scalar mode. */ | |
97e1ad78 | 23482 | |
99e1629f | 23483 | static bool |
ef4bddc2 | 23484 | aarch64_modes_tieable_p (machine_mode mode1, machine_mode mode2) |
97e1ad78 | 23485 | { |
66f206b8 JW |
23486 | if ((aarch64_advsimd_partial_struct_mode_p (mode1) |
23487 | != aarch64_advsimd_partial_struct_mode_p (mode2)) | |
23488 | && maybe_gt (GET_MODE_SIZE (mode1), 8) | |
23489 | && maybe_gt (GET_MODE_SIZE (mode2), 8)) | |
23490 | return false; | |
23491 | ||
97e1ad78 JG |
23492 | if (GET_MODE_CLASS (mode1) == GET_MODE_CLASS (mode2)) |
23493 | return true; | |
23494 | ||
23495 | /* We specifically want to allow elements of "structure" modes to | |
23496 | be tieable to the structure. This more general condition allows | |
43cacb12 RS |
23497 | other rarer situations too. The reason we don't extend this to |
23498 | predicate modes is that there are no predicate structure modes | |
23499 | nor any specific instructions for extracting part of a predicate | |
23500 | register. */ | |
23501 | if (aarch64_vector_data_mode_p (mode1) | |
23502 | && aarch64_vector_data_mode_p (mode2)) | |
61f17a5c WD |
23503 | return true; |
23504 | ||
23505 | /* Also allow any scalar modes with vectors. */ | |
23506 | if (aarch64_vector_mode_supported_p (mode1) | |
23507 | || aarch64_vector_mode_supported_p (mode2)) | |
97e1ad78 JG |
23508 | return true; |
23509 | ||
23510 | return false; | |
23511 | } | |
23512 | ||
e2c75eea JG |
23513 | /* Return a new RTX holding the result of moving POINTER forward by |
23514 | AMOUNT bytes. */ | |
23515 | ||
23516 | static rtx | |
6a70badb | 23517 | aarch64_move_pointer (rtx pointer, poly_int64 amount) |
e2c75eea JG |
23518 | { |
23519 | rtx next = plus_constant (Pmode, XEXP (pointer, 0), amount); | |
23520 | ||
23521 | return adjust_automodify_address (pointer, GET_MODE (pointer), | |
23522 | next, amount); | |
23523 | } | |
23524 | ||
23525 | /* Return a new RTX holding the result of moving POINTER forward by the | |
23526 | size of the mode it points to. */ | |
23527 | ||
23528 | static rtx | |
23529 | aarch64_progress_pointer (rtx pointer) | |
23530 | { | |
6a70badb | 23531 | return aarch64_move_pointer (pointer, GET_MODE_SIZE (GET_MODE (pointer))); |
e2c75eea JG |
23532 | } |
23533 | ||
23534 | /* Copy one MODE sized block from SRC to DST, then progress SRC and DST by | |
23535 | MODE bytes. */ | |
23536 | ||
23537 | static void | |
23538 | aarch64_copy_one_block_and_progress_pointers (rtx *src, rtx *dst, | |
ef4bddc2 | 23539 | machine_mode mode) |
e2c75eea | 23540 | { |
7cda9e08 SD |
23541 | /* Handle 256-bit memcpy separately. We do this by making 2 adjacent memory |
23542 | address copies using V4SImode so that we can use Q registers. */ | |
23543 | if (known_eq (GET_MODE_BITSIZE (mode), 256)) | |
23544 | { | |
23545 | mode = V4SImode; | |
23546 | rtx reg1 = gen_reg_rtx (mode); | |
23547 | rtx reg2 = gen_reg_rtx (mode); | |
23548 | /* "Cast" the pointers to the correct mode. */ | |
23549 | *src = adjust_address (*src, mode, 0); | |
23550 | *dst = adjust_address (*dst, mode, 0); | |
23551 | /* Emit the memcpy. */ | |
23552 | emit_insn (aarch64_gen_load_pair (mode, reg1, *src, reg2, | |
23553 | aarch64_progress_pointer (*src))); | |
23554 | emit_insn (aarch64_gen_store_pair (mode, *dst, reg1, | |
23555 | aarch64_progress_pointer (*dst), reg2)); | |
23556 | /* Move the pointers forward. */ | |
23557 | *src = aarch64_move_pointer (*src, 32); | |
23558 | *dst = aarch64_move_pointer (*dst, 32); | |
23559 | return; | |
23560 | } | |
23561 | ||
e2c75eea JG |
23562 | rtx reg = gen_reg_rtx (mode); |
23563 | ||
23564 | /* "Cast" the pointers to the correct mode. */ | |
23565 | *src = adjust_address (*src, mode, 0); | |
23566 | *dst = adjust_address (*dst, mode, 0); | |
23567 | /* Emit the memcpy. */ | |
23568 | emit_move_insn (reg, *src); | |
23569 | emit_move_insn (*dst, reg); | |
23570 | /* Move the pointers forward. */ | |
23571 | *src = aarch64_progress_pointer (*src); | |
23572 | *dst = aarch64_progress_pointer (*dst); | |
23573 | } | |
23574 | ||
0caf592d KT |
23575 | /* Expand a cpymem using the MOPS extension. OPERANDS are taken |
23576 | from the cpymem pattern. Return true iff we succeeded. */ | |
23577 | static bool | |
23578 | aarch64_expand_cpymem_mops (rtx *operands) | |
23579 | { | |
23580 | if (!TARGET_MOPS) | |
23581 | return false; | |
23582 | rtx addr_dst = XEXP (operands[0], 0); | |
23583 | rtx addr_src = XEXP (operands[1], 0); | |
23584 | rtx sz_reg = operands[2]; | |
23585 | ||
23586 | if (!REG_P (sz_reg)) | |
23587 | sz_reg = force_reg (DImode, sz_reg); | |
23588 | if (!REG_P (addr_dst)) | |
23589 | addr_dst = force_reg (DImode, addr_dst); | |
23590 | if (!REG_P (addr_src)) | |
23591 | addr_src = force_reg (DImode, addr_src); | |
23592 | emit_insn (gen_aarch64_cpymemdi (addr_dst, addr_src, sz_reg)); | |
23593 | ||
23594 | return true; | |
23595 | } | |
23596 | ||
76715c32 | 23597 | /* Expand cpymem, as if from a __builtin_memcpy. Return true if |
a459ee44 KT |
23598 | we succeed, otherwise return false, indicating that a libcall to |
23599 | memcpy should be emitted. */ | |
e2c75eea JG |
23600 | |
23601 | bool | |
76715c32 | 23602 | aarch64_expand_cpymem (rtx *operands) |
e2c75eea | 23603 | { |
1d77928f | 23604 | int mode_bits; |
e2c75eea JG |
23605 | rtx dst = operands[0]; |
23606 | rtx src = operands[1]; | |
23607 | rtx base; | |
1d77928f | 23608 | machine_mode cur_mode = BLKmode; |
e2c75eea | 23609 | |
0caf592d | 23610 | /* Variable-sized memcpy can go through the MOPS expansion if available. */ |
e2c75eea | 23611 | if (!CONST_INT_P (operands[2])) |
0caf592d | 23612 | return aarch64_expand_cpymem_mops (operands); |
e2c75eea | 23613 | |
1d77928f | 23614 | unsigned HOST_WIDE_INT size = INTVAL (operands[2]); |
e2c75eea | 23615 | |
0caf592d KT |
23616 | /* Try to inline up to 256 bytes or use the MOPS threshold if available. */ |
23617 | unsigned HOST_WIDE_INT max_copy_size | |
23618 | = TARGET_MOPS ? aarch64_mops_memcpy_size_threshold : 256; | |
1d77928f | 23619 | |
a459ee44 KT |
23620 | bool size_p = optimize_function_for_size_p (cfun); |
23621 | ||
0caf592d KT |
23622 | /* Large constant-sized cpymem should go through MOPS when possible. |
23623 | It should be a win even for size optimization in the general case. | |
23624 | For speed optimization the choice between MOPS and the SIMD sequence | |
23625 | depends on the size of the copy, rather than number of instructions, | |
23626 | alignment etc. */ | |
a459ee44 | 23627 | if (size > max_copy_size) |
0caf592d | 23628 | return aarch64_expand_cpymem_mops (operands); |
e2c75eea | 23629 | |
1d77928f WD |
23630 | int copy_bits = 256; |
23631 | ||
23632 | /* Default to 256-bit LDP/STP on large copies, however small copies, no SIMD | |
23633 | support or slow 256-bit LDP/STP fall back to 128-bit chunks. */ | |
23634 | if (size <= 24 | |
23635 | || !TARGET_SIMD | |
23636 | || (aarch64_tune_params.extra_tuning_flags | |
23637 | & AARCH64_EXTRA_TUNE_NO_LDP_STP_QREGS)) | |
a459ee44 | 23638 | copy_bits = 128; |
1d77928f | 23639 | |
a459ee44 KT |
23640 | /* Emit an inline load+store sequence and count the number of operations |
23641 | involved. We use a simple count of just the loads and stores emitted | |
23642 | rather than rtx_insn count as all the pointer adjustments and reg copying | |
23643 | in this function will get optimized away later in the pipeline. */ | |
23644 | start_sequence (); | |
23645 | unsigned nops = 0; | |
0f801e0b | 23646 | |
e2c75eea JG |
23647 | base = copy_to_mode_reg (Pmode, XEXP (dst, 0)); |
23648 | dst = adjust_automodify_address (dst, VOIDmode, base, 0); | |
23649 | ||
23650 | base = copy_to_mode_reg (Pmode, XEXP (src, 0)); | |
23651 | src = adjust_automodify_address (src, VOIDmode, base, 0); | |
23652 | ||
1d77928f WD |
23653 | /* Convert size to bits to make the rest of the code simpler. */ |
23654 | int n = size * BITS_PER_UNIT; | |
f7e1d19d | 23655 | |
89c52e5e | 23656 | while (n > 0) |
e2c75eea | 23657 | { |
89c52e5e TC |
23658 | /* Find the largest mode in which to do the copy in without over reading |
23659 | or writing. */ | |
23660 | opt_scalar_int_mode mode_iter; | |
23661 | FOR_EACH_MODE_IN_CLASS (mode_iter, MODE_INT) | |
1d77928f | 23662 | if (GET_MODE_BITSIZE (mode_iter.require ()) <= MIN (n, copy_bits)) |
89c52e5e | 23663 | cur_mode = mode_iter.require (); |
e2c75eea | 23664 | |
89c52e5e | 23665 | gcc_assert (cur_mode != BLKmode); |
e2c75eea | 23666 | |
89c52e5e | 23667 | mode_bits = GET_MODE_BITSIZE (cur_mode).to_constant (); |
1d77928f WD |
23668 | |
23669 | /* Prefer Q-register accesses for the last bytes. */ | |
23670 | if (mode_bits == 128 && copy_bits == 256) | |
23671 | cur_mode = V4SImode; | |
23672 | ||
89c52e5e | 23673 | aarch64_copy_one_block_and_progress_pointers (&src, &dst, cur_mode); |
a459ee44 KT |
23674 | /* A single block copy is 1 load + 1 store. */ |
23675 | nops += 2; | |
89c52e5e | 23676 | n -= mode_bits; |
e2c75eea | 23677 | |
0caf592d KT |
23678 | /* Emit trailing copies using overlapping unaligned accesses |
23679 | (when !STRICT_ALIGNMENT) - this is smaller and faster. */ | |
23680 | if (n > 0 && n < copy_bits / 2 && !STRICT_ALIGNMENT) | |
89c52e5e | 23681 | { |
1d77928f | 23682 | machine_mode next_mode = smallest_mode_for_size (n, MODE_INT); |
f7e1d19d | 23683 | int n_bits = GET_MODE_BITSIZE (next_mode).to_constant (); |
1d77928f | 23684 | gcc_assert (n_bits <= mode_bits); |
89c52e5e TC |
23685 | src = aarch64_move_pointer (src, (n - n_bits) / BITS_PER_UNIT); |
23686 | dst = aarch64_move_pointer (dst, (n - n_bits) / BITS_PER_UNIT); | |
23687 | n = n_bits; | |
e2c75eea JG |
23688 | } |
23689 | } | |
a459ee44 KT |
23690 | rtx_insn *seq = get_insns (); |
23691 | end_sequence (); | |
0caf592d KT |
23692 | /* MOPS sequence requires 3 instructions for the memory copying + 1 to move |
23693 | the constant size into a register. */ | |
23694 | unsigned mops_cost = 3 + 1; | |
23695 | ||
23696 | /* If MOPS is available at this point we don't consider the libcall as it's | |
23697 | not a win even on code size. At this point only consider MOPS if | |
23698 | optimizing for size. For speed optimizations we will have chosen between | |
23699 | the two based on copy size already. */ | |
23700 | if (TARGET_MOPS) | |
23701 | { | |
23702 | if (size_p && mops_cost < nops) | |
23703 | return aarch64_expand_cpymem_mops (operands); | |
23704 | emit_insn (seq); | |
23705 | return true; | |
23706 | } | |
a459ee44 KT |
23707 | |
23708 | /* A memcpy libcall in the worst case takes 3 instructions to prepare the | |
0caf592d KT |
23709 | arguments + 1 for the call. When MOPS is not available and we're |
23710 | optimizing for size a libcall may be preferable. */ | |
a459ee44 KT |
23711 | unsigned libcall_cost = 4; |
23712 | if (size_p && libcall_cost < nops) | |
23713 | return false; | |
e2c75eea | 23714 | |
a459ee44 | 23715 | emit_insn (seq); |
e2c75eea JG |
23716 | return true; |
23717 | } | |
23718 | ||
54bbde55 SD |
23719 | /* Like aarch64_copy_one_block_and_progress_pointers, except for memset where |
23720 | SRC is a register we have created with the duplicated value to be set. */ | |
23721 | static void | |
23722 | aarch64_set_one_block_and_progress_pointer (rtx src, rtx *dst, | |
23723 | machine_mode mode) | |
23724 | { | |
23725 | /* If we are copying 128bits or 256bits, we can do that straight from | |
23726 | the SIMD register we prepared. */ | |
23727 | if (known_eq (GET_MODE_BITSIZE (mode), 256)) | |
23728 | { | |
23729 | mode = GET_MODE (src); | |
23730 | /* "Cast" the *dst to the correct mode. */ | |
23731 | *dst = adjust_address (*dst, mode, 0); | |
23732 | /* Emit the memset. */ | |
23733 | emit_insn (aarch64_gen_store_pair (mode, *dst, src, | |
23734 | aarch64_progress_pointer (*dst), src)); | |
23735 | ||
23736 | /* Move the pointers forward. */ | |
23737 | *dst = aarch64_move_pointer (*dst, 32); | |
23738 | return; | |
23739 | } | |
23740 | if (known_eq (GET_MODE_BITSIZE (mode), 128)) | |
23741 | { | |
23742 | /* "Cast" the *dst to the correct mode. */ | |
23743 | *dst = adjust_address (*dst, GET_MODE (src), 0); | |
23744 | /* Emit the memset. */ | |
23745 | emit_move_insn (*dst, src); | |
23746 | /* Move the pointers forward. */ | |
23747 | *dst = aarch64_move_pointer (*dst, 16); | |
23748 | return; | |
23749 | } | |
23750 | /* For copying less, we have to extract the right amount from src. */ | |
23751 | rtx reg = lowpart_subreg (mode, src, GET_MODE (src)); | |
23752 | ||
23753 | /* "Cast" the *dst to the correct mode. */ | |
23754 | *dst = adjust_address (*dst, mode, 0); | |
23755 | /* Emit the memset. */ | |
23756 | emit_move_insn (*dst, reg); | |
23757 | /* Move the pointer forward. */ | |
23758 | *dst = aarch64_progress_pointer (*dst); | |
23759 | } | |
23760 | ||
d3bd985e KT |
23761 | /* Expand a setmem using the MOPS instructions. OPERANDS are the same |
23762 | as for the setmem pattern. Return true iff we succeed. */ | |
23763 | static bool | |
23764 | aarch64_expand_setmem_mops (rtx *operands) | |
23765 | { | |
23766 | if (!TARGET_MOPS) | |
23767 | return false; | |
23768 | ||
23769 | rtx addr_dst = XEXP (operands[0], 0); | |
23770 | rtx sz_reg = operands[1]; | |
23771 | rtx val = operands[2]; | |
23772 | ||
23773 | if (!REG_P (sz_reg)) | |
23774 | sz_reg = force_reg (DImode, sz_reg); | |
23775 | if (!REG_P (addr_dst)) | |
23776 | addr_dst = force_reg (DImode, addr_dst); | |
23777 | if (!REG_P (val) && val != CONST0_RTX (QImode)) | |
23778 | val = force_reg (QImode, val); | |
23779 | emit_insn (gen_aarch64_setmemdi (addr_dst, val, sz_reg)); | |
23780 | return true; | |
23781 | } | |
23782 | ||
54bbde55 SD |
23783 | /* Expand setmem, as if from a __builtin_memset. Return true if |
23784 | we succeed, otherwise return false. */ | |
23785 | ||
23786 | bool | |
23787 | aarch64_expand_setmem (rtx *operands) | |
23788 | { | |
23789 | int n, mode_bits; | |
23790 | unsigned HOST_WIDE_INT len; | |
23791 | rtx dst = operands[0]; | |
23792 | rtx val = operands[2], src; | |
23793 | rtx base; | |
23794 | machine_mode cur_mode = BLKmode, next_mode; | |
23795 | ||
d3bd985e KT |
23796 | /* If we don't have SIMD registers or the size is variable use the MOPS |
23797 | inlined sequence if possible. */ | |
23798 | if (!CONST_INT_P (operands[1]) || !TARGET_SIMD) | |
23799 | return aarch64_expand_setmem_mops (operands); | |
54bbde55 | 23800 | |
8f95e3c0 | 23801 | bool size_p = optimize_function_for_size_p (cfun); |
54bbde55 | 23802 | |
d3bd985e KT |
23803 | /* Default the maximum to 256-bytes when considering only libcall vs |
23804 | SIMD broadcast sequence. */ | |
54bbde55 SD |
23805 | unsigned max_set_size = 256; |
23806 | ||
54bbde55 | 23807 | len = INTVAL (operands[1]); |
d3bd985e | 23808 | if (len > max_set_size && !TARGET_MOPS) |
54bbde55 SD |
23809 | return false; |
23810 | ||
d3bd985e KT |
23811 | int cst_val = !!(CONST_INT_P (val) && (INTVAL (val) != 0)); |
23812 | /* The MOPS sequence takes: | |
23813 | 3 instructions for the memory storing | |
23814 | + 1 to move the constant size into a reg | |
23815 | + 1 if VAL is a non-zero constant to move into a reg | |
23816 | (zero constants can use XZR directly). */ | |
23817 | unsigned mops_cost = 3 + 1 + cst_val; | |
23818 | /* A libcall to memset in the worst case takes 3 instructions to prepare | |
23819 | the arguments + 1 for the call. */ | |
23820 | unsigned libcall_cost = 4; | |
23821 | ||
23822 | /* Upper bound check. For large constant-sized setmem use the MOPS sequence | |
23823 | when available. */ | |
23824 | if (TARGET_MOPS | |
23825 | && len >= (unsigned HOST_WIDE_INT) aarch64_mops_memset_size_threshold) | |
23826 | return aarch64_expand_setmem_mops (operands); | |
23827 | ||
8f95e3c0 | 23828 | /* Attempt a sequence with a vector broadcast followed by stores. |
d3bd985e KT |
23829 | Count the number of operations involved to see if it's worth it |
23830 | against the alternatives. A simple counter simd_ops on the | |
23831 | algorithmically-relevant operations is used rather than an rtx_insn count | |
23832 | as all the pointer adjusmtents and mode reinterprets will be optimized | |
23833 | away later. */ | |
8f95e3c0 | 23834 | start_sequence (); |
d3bd985e KT |
23835 | unsigned simd_ops = 0; |
23836 | ||
54bbde55 SD |
23837 | base = copy_to_mode_reg (Pmode, XEXP (dst, 0)); |
23838 | dst = adjust_automodify_address (dst, VOIDmode, base, 0); | |
23839 | ||
23840 | /* Prepare the val using a DUP/MOVI v0.16B, val. */ | |
23841 | src = expand_vector_broadcast (V16QImode, val); | |
23842 | src = force_reg (V16QImode, src); | |
d3bd985e | 23843 | simd_ops++; |
54bbde55 SD |
23844 | /* Convert len to bits to make the rest of the code simpler. */ |
23845 | n = len * BITS_PER_UNIT; | |
23846 | ||
23847 | /* Maximum amount to copy in one go. We allow 256-bit chunks based on the | |
d3bd985e | 23848 | AARCH64_EXTRA_TUNE_NO_LDP_STP_QREGS tuning parameter. */ |
8f95e3c0 KT |
23849 | const int copy_limit = (aarch64_tune_params.extra_tuning_flags |
23850 | & AARCH64_EXTRA_TUNE_NO_LDP_STP_QREGS) | |
54bbde55 SD |
23851 | ? GET_MODE_BITSIZE (TImode) : 256; |
23852 | ||
23853 | while (n > 0) | |
23854 | { | |
23855 | /* Find the largest mode in which to do the copy without | |
23856 | over writing. */ | |
23857 | opt_scalar_int_mode mode_iter; | |
23858 | FOR_EACH_MODE_IN_CLASS (mode_iter, MODE_INT) | |
23859 | if (GET_MODE_BITSIZE (mode_iter.require ()) <= MIN (n, copy_limit)) | |
23860 | cur_mode = mode_iter.require (); | |
23861 | ||
23862 | gcc_assert (cur_mode != BLKmode); | |
23863 | ||
23864 | mode_bits = GET_MODE_BITSIZE (cur_mode).to_constant (); | |
23865 | aarch64_set_one_block_and_progress_pointer (src, &dst, cur_mode); | |
d3bd985e | 23866 | simd_ops++; |
54bbde55 SD |
23867 | n -= mode_bits; |
23868 | ||
23869 | /* Do certain trailing copies as overlapping if it's going to be | |
23870 | cheaper. i.e. less instructions to do so. For instance doing a 15 | |
23871 | byte copy it's more efficient to do two overlapping 8 byte copies than | |
a45786e9 AP |
23872 | 8 + 4 + 2 + 1. Only do this when -mstrict-align is not supplied. */ |
23873 | if (n > 0 && n < copy_limit / 2 && !STRICT_ALIGNMENT) | |
54bbde55 SD |
23874 | { |
23875 | next_mode = smallest_mode_for_size (n, MODE_INT); | |
23876 | int n_bits = GET_MODE_BITSIZE (next_mode).to_constant (); | |
23877 | gcc_assert (n_bits <= mode_bits); | |
23878 | dst = aarch64_move_pointer (dst, (n - n_bits) / BITS_PER_UNIT); | |
23879 | n = n_bits; | |
23880 | } | |
23881 | } | |
8f95e3c0 KT |
23882 | rtx_insn *seq = get_insns (); |
23883 | end_sequence (); | |
54bbde55 | 23884 | |
d3bd985e KT |
23885 | if (size_p) |
23886 | { | |
23887 | /* When optimizing for size we have 3 options: the SIMD broadcast sequence, | |
23888 | call to memset or the MOPS expansion. */ | |
23889 | if (TARGET_MOPS | |
23890 | && mops_cost <= libcall_cost | |
23891 | && mops_cost <= simd_ops) | |
23892 | return aarch64_expand_setmem_mops (operands); | |
23893 | /* If MOPS is not available or not shorter pick a libcall if the SIMD | |
23894 | sequence is too long. */ | |
23895 | else if (libcall_cost < simd_ops) | |
23896 | return false; | |
23897 | emit_insn (seq); | |
23898 | return true; | |
23899 | } | |
23900 | ||
23901 | /* At this point the SIMD broadcast sequence is the best choice when | |
23902 | optimizing for speed. */ | |
8f95e3c0 | 23903 | emit_insn (seq); |
54bbde55 SD |
23904 | return true; |
23905 | } | |
23906 | ||
23907 | ||
141a3ccf KT |
23908 | /* Split a DImode store of a CONST_INT SRC to MEM DST as two |
23909 | SImode stores. Handle the case when the constant has identical | |
23910 | bottom and top halves. This is beneficial when the two stores can be | |
23911 | merged into an STP and we avoid synthesising potentially expensive | |
23912 | immediates twice. Return true if such a split is possible. */ | |
23913 | ||
23914 | bool | |
23915 | aarch64_split_dimode_const_store (rtx dst, rtx src) | |
23916 | { | |
23917 | rtx lo = gen_lowpart (SImode, src); | |
23918 | rtx hi = gen_highpart_mode (SImode, DImode, src); | |
23919 | ||
23920 | bool size_p = optimize_function_for_size_p (cfun); | |
23921 | ||
23922 | if (!rtx_equal_p (lo, hi)) | |
23923 | return false; | |
23924 | ||
23925 | unsigned int orig_cost | |
23926 | = aarch64_internal_mov_immediate (NULL_RTX, src, false, DImode); | |
23927 | unsigned int lo_cost | |
23928 | = aarch64_internal_mov_immediate (NULL_RTX, lo, false, SImode); | |
23929 | ||
23930 | /* We want to transform: | |
23931 | MOV x1, 49370 | |
23932 | MOVK x1, 0x140, lsl 16 | |
23933 | MOVK x1, 0xc0da, lsl 32 | |
23934 | MOVK x1, 0x140, lsl 48 | |
23935 | STR x1, [x0] | |
23936 | into: | |
23937 | MOV w1, 49370 | |
23938 | MOVK w1, 0x140, lsl 16 | |
23939 | STP w1, w1, [x0] | |
23940 | So we want to perform this only when we save two instructions | |
23941 | or more. When optimizing for size, however, accept any code size | |
23942 | savings we can. */ | |
23943 | if (size_p && orig_cost <= lo_cost) | |
23944 | return false; | |
23945 | ||
23946 | if (!size_p | |
23947 | && (orig_cost <= lo_cost + 1)) | |
23948 | return false; | |
23949 | ||
23950 | rtx mem_lo = adjust_address (dst, SImode, 0); | |
23951 | if (!aarch64_mem_pair_operand (mem_lo, SImode)) | |
23952 | return false; | |
23953 | ||
23954 | rtx tmp_reg = gen_reg_rtx (SImode); | |
23955 | aarch64_expand_mov_immediate (tmp_reg, lo); | |
23956 | rtx mem_hi = aarch64_move_pointer (mem_lo, GET_MODE_SIZE (SImode)); | |
23957 | /* Don't emit an explicit store pair as this may not be always profitable. | |
23958 | Let the sched-fusion logic decide whether to merge them. */ | |
23959 | emit_move_insn (mem_lo, tmp_reg); | |
23960 | emit_move_insn (mem_hi, tmp_reg); | |
23961 | ||
23962 | return true; | |
23963 | } | |
23964 | ||
30c46053 MC |
23965 | /* Generate RTL for a conditional branch with rtx comparison CODE in |
23966 | mode CC_MODE. The destination of the unlikely conditional branch | |
23967 | is LABEL_REF. */ | |
23968 | ||
23969 | void | |
23970 | aarch64_gen_unlikely_cbranch (enum rtx_code code, machine_mode cc_mode, | |
23971 | rtx label_ref) | |
23972 | { | |
23973 | rtx x; | |
23974 | x = gen_rtx_fmt_ee (code, VOIDmode, | |
23975 | gen_rtx_REG (cc_mode, CC_REGNUM), | |
23976 | const0_rtx); | |
23977 | ||
23978 | x = gen_rtx_IF_THEN_ELSE (VOIDmode, x, | |
23979 | gen_rtx_LABEL_REF (VOIDmode, label_ref), | |
23980 | pc_rtx); | |
23981 | aarch64_emit_unlikely_jump (gen_rtx_SET (pc_rtx, x)); | |
23982 | } | |
23983 | ||
23984 | /* Generate DImode scratch registers for 128-bit (TImode) addition. | |
23985 | ||
23986 | OP1 represents the TImode destination operand 1 | |
23987 | OP2 represents the TImode destination operand 2 | |
23988 | LOW_DEST represents the low half (DImode) of TImode operand 0 | |
23989 | LOW_IN1 represents the low half (DImode) of TImode operand 1 | |
23990 | LOW_IN2 represents the low half (DImode) of TImode operand 2 | |
23991 | HIGH_DEST represents the high half (DImode) of TImode operand 0 | |
23992 | HIGH_IN1 represents the high half (DImode) of TImode operand 1 | |
23993 | HIGH_IN2 represents the high half (DImode) of TImode operand 2. */ | |
23994 | ||
23995 | void | |
23996 | aarch64_addti_scratch_regs (rtx op1, rtx op2, rtx *low_dest, | |
23997 | rtx *low_in1, rtx *low_in2, | |
23998 | rtx *high_dest, rtx *high_in1, | |
23999 | rtx *high_in2) | |
24000 | { | |
24001 | *low_dest = gen_reg_rtx (DImode); | |
24002 | *low_in1 = gen_lowpart (DImode, op1); | |
24003 | *low_in2 = simplify_gen_subreg (DImode, op2, TImode, | |
24004 | subreg_lowpart_offset (DImode, TImode)); | |
24005 | *high_dest = gen_reg_rtx (DImode); | |
24006 | *high_in1 = gen_highpart (DImode, op1); | |
24007 | *high_in2 = simplify_gen_subreg (DImode, op2, TImode, | |
24008 | subreg_highpart_offset (DImode, TImode)); | |
24009 | } | |
24010 | ||
24011 | /* Generate DImode scratch registers for 128-bit (TImode) subtraction. | |
24012 | ||
24013 | This function differs from 'arch64_addti_scratch_regs' in that | |
24014 | OP1 can be an immediate constant (zero). We must call | |
24015 | subreg_highpart_offset with DImode and TImode arguments, otherwise | |
24016 | VOIDmode will be used for the const_int which generates an internal | |
24017 | error from subreg_size_highpart_offset which does not expect a size of zero. | |
24018 | ||
24019 | OP1 represents the TImode destination operand 1 | |
24020 | OP2 represents the TImode destination operand 2 | |
24021 | LOW_DEST represents the low half (DImode) of TImode operand 0 | |
24022 | LOW_IN1 represents the low half (DImode) of TImode operand 1 | |
24023 | LOW_IN2 represents the low half (DImode) of TImode operand 2 | |
24024 | HIGH_DEST represents the high half (DImode) of TImode operand 0 | |
24025 | HIGH_IN1 represents the high half (DImode) of TImode operand 1 | |
24026 | HIGH_IN2 represents the high half (DImode) of TImode operand 2. */ | |
24027 | ||
24028 | ||
24029 | void | |
24030 | aarch64_subvti_scratch_regs (rtx op1, rtx op2, rtx *low_dest, | |
24031 | rtx *low_in1, rtx *low_in2, | |
24032 | rtx *high_dest, rtx *high_in1, | |
24033 | rtx *high_in2) | |
24034 | { | |
24035 | *low_dest = gen_reg_rtx (DImode); | |
24036 | *low_in1 = simplify_gen_subreg (DImode, op1, TImode, | |
24037 | subreg_lowpart_offset (DImode, TImode)); | |
24038 | ||
24039 | *low_in2 = simplify_gen_subreg (DImode, op2, TImode, | |
24040 | subreg_lowpart_offset (DImode, TImode)); | |
24041 | *high_dest = gen_reg_rtx (DImode); | |
24042 | ||
24043 | *high_in1 = simplify_gen_subreg (DImode, op1, TImode, | |
24044 | subreg_highpart_offset (DImode, TImode)); | |
24045 | *high_in2 = simplify_gen_subreg (DImode, op2, TImode, | |
24046 | subreg_highpart_offset (DImode, TImode)); | |
24047 | } | |
24048 | ||
24049 | /* Generate RTL for 128-bit (TImode) subtraction with overflow. | |
24050 | ||
24051 | OP0 represents the TImode destination operand 0 | |
24052 | LOW_DEST represents the low half (DImode) of TImode operand 0 | |
24053 | LOW_IN1 represents the low half (DImode) of TImode operand 1 | |
24054 | LOW_IN2 represents the low half (DImode) of TImode operand 2 | |
24055 | HIGH_DEST represents the high half (DImode) of TImode operand 0 | |
24056 | HIGH_IN1 represents the high half (DImode) of TImode operand 1 | |
a58fe3c5 RE |
24057 | HIGH_IN2 represents the high half (DImode) of TImode operand 2 |
24058 | UNSIGNED_P is true if the operation is being performed on unsigned | |
24059 | values. */ | |
30c46053 MC |
24060 | void |
24061 | aarch64_expand_subvti (rtx op0, rtx low_dest, rtx low_in1, | |
24062 | rtx low_in2, rtx high_dest, rtx high_in1, | |
a58fe3c5 | 24063 | rtx high_in2, bool unsigned_p) |
30c46053 MC |
24064 | { |
24065 | if (low_in2 == const0_rtx) | |
24066 | { | |
24067 | low_dest = low_in1; | |
a58fe3c5 RE |
24068 | high_in2 = force_reg (DImode, high_in2); |
24069 | if (unsigned_p) | |
24070 | emit_insn (gen_subdi3_compare1 (high_dest, high_in1, high_in2)); | |
24071 | else | |
24072 | emit_insn (gen_subvdi_insn (high_dest, high_in1, high_in2)); | |
30c46053 MC |
24073 | } |
24074 | else | |
24075 | { | |
d80f0a8d JJ |
24076 | if (aarch64_plus_immediate (low_in2, DImode)) |
24077 | emit_insn (gen_subdi3_compare1_imm (low_dest, low_in1, low_in2, | |
618ae596 | 24078 | GEN_INT (-UINTVAL (low_in2)))); |
d80f0a8d | 24079 | else |
30c46053 | 24080 | { |
d80f0a8d JJ |
24081 | low_in2 = force_reg (DImode, low_in2); |
24082 | emit_insn (gen_subdi3_compare1 (low_dest, low_in1, low_in2)); | |
30c46053 | 24083 | } |
d80f0a8d | 24084 | high_in2 = force_reg (DImode, high_in2); |
a58fe3c5 RE |
24085 | |
24086 | if (unsigned_p) | |
24087 | emit_insn (gen_usubdi3_carryinC (high_dest, high_in1, high_in2)); | |
24088 | else | |
24089 | emit_insn (gen_subdi3_carryinV (high_dest, high_in1, high_in2)); | |
30c46053 MC |
24090 | } |
24091 | ||
24092 | emit_move_insn (gen_lowpart (DImode, op0), low_dest); | |
24093 | emit_move_insn (gen_highpart (DImode, op0), high_dest); | |
24094 | ||
24095 | } | |
24096 | ||
a3125fc2 CL |
24097 | /* Implement the TARGET_ASAN_SHADOW_OFFSET hook. */ |
24098 | ||
24099 | static unsigned HOST_WIDE_INT | |
24100 | aarch64_asan_shadow_offset (void) | |
24101 | { | |
10078f3e AP |
24102 | if (TARGET_ILP32) |
24103 | return (HOST_WIDE_INT_1 << 29); | |
24104 | else | |
24105 | return (HOST_WIDE_INT_1 << 36); | |
a3125fc2 CL |
24106 | } |
24107 | ||
5f3bc026 | 24108 | static rtx |
cb4347e8 | 24109 | aarch64_gen_ccmp_first (rtx_insn **prep_seq, rtx_insn **gen_seq, |
5f3bc026 ZC |
24110 | int code, tree treeop0, tree treeop1) |
24111 | { | |
c8012fbc WD |
24112 | machine_mode op_mode, cmp_mode, cc_mode = CCmode; |
24113 | rtx op0, op1; | |
5f3bc026 | 24114 | int unsignedp = TYPE_UNSIGNED (TREE_TYPE (treeop0)); |
c8012fbc | 24115 | insn_code icode; |
5f3bc026 ZC |
24116 | struct expand_operand ops[4]; |
24117 | ||
5f3bc026 ZC |
24118 | start_sequence (); |
24119 | expand_operands (treeop0, treeop1, NULL_RTX, &op0, &op1, EXPAND_NORMAL); | |
24120 | ||
24121 | op_mode = GET_MODE (op0); | |
24122 | if (op_mode == VOIDmode) | |
24123 | op_mode = GET_MODE (op1); | |
24124 | ||
24125 | switch (op_mode) | |
24126 | { | |
4e10a5a7 RS |
24127 | case E_QImode: |
24128 | case E_HImode: | |
24129 | case E_SImode: | |
5f3bc026 ZC |
24130 | cmp_mode = SImode; |
24131 | icode = CODE_FOR_cmpsi; | |
24132 | break; | |
24133 | ||
4e10a5a7 | 24134 | case E_DImode: |
5f3bc026 ZC |
24135 | cmp_mode = DImode; |
24136 | icode = CODE_FOR_cmpdi; | |
24137 | break; | |
24138 | ||
4e10a5a7 | 24139 | case E_SFmode: |
786e3c06 WD |
24140 | cmp_mode = SFmode; |
24141 | cc_mode = aarch64_select_cc_mode ((rtx_code) code, op0, op1); | |
24142 | icode = cc_mode == CCFPEmode ? CODE_FOR_fcmpesf : CODE_FOR_fcmpsf; | |
24143 | break; | |
24144 | ||
4e10a5a7 | 24145 | case E_DFmode: |
786e3c06 WD |
24146 | cmp_mode = DFmode; |
24147 | cc_mode = aarch64_select_cc_mode ((rtx_code) code, op0, op1); | |
24148 | icode = cc_mode == CCFPEmode ? CODE_FOR_fcmpedf : CODE_FOR_fcmpdf; | |
24149 | break; | |
24150 | ||
5f3bc026 ZC |
24151 | default: |
24152 | end_sequence (); | |
24153 | return NULL_RTX; | |
24154 | } | |
24155 | ||
c8012fbc WD |
24156 | op0 = prepare_operand (icode, op0, 0, op_mode, cmp_mode, unsignedp); |
24157 | op1 = prepare_operand (icode, op1, 1, op_mode, cmp_mode, unsignedp); | |
5f3bc026 ZC |
24158 | if (!op0 || !op1) |
24159 | { | |
24160 | end_sequence (); | |
24161 | return NULL_RTX; | |
24162 | } | |
24163 | *prep_seq = get_insns (); | |
24164 | end_sequence (); | |
24165 | ||
c8012fbc WD |
24166 | create_fixed_operand (&ops[0], op0); |
24167 | create_fixed_operand (&ops[1], op1); | |
5f3bc026 ZC |
24168 | |
24169 | start_sequence (); | |
c8012fbc | 24170 | if (!maybe_expand_insn (icode, 2, ops)) |
5f3bc026 ZC |
24171 | { |
24172 | end_sequence (); | |
24173 | return NULL_RTX; | |
24174 | } | |
24175 | *gen_seq = get_insns (); | |
24176 | end_sequence (); | |
24177 | ||
c8012fbc WD |
24178 | return gen_rtx_fmt_ee ((rtx_code) code, cc_mode, |
24179 | gen_rtx_REG (cc_mode, CC_REGNUM), const0_rtx); | |
5f3bc026 ZC |
24180 | } |
24181 | ||
24182 | static rtx | |
cb4347e8 TS |
24183 | aarch64_gen_ccmp_next (rtx_insn **prep_seq, rtx_insn **gen_seq, rtx prev, |
24184 | int cmp_code, tree treeop0, tree treeop1, int bit_code) | |
5f3bc026 | 24185 | { |
c8012fbc WD |
24186 | rtx op0, op1, target; |
24187 | machine_mode op_mode, cmp_mode, cc_mode = CCmode; | |
5f3bc026 | 24188 | int unsignedp = TYPE_UNSIGNED (TREE_TYPE (treeop0)); |
c8012fbc | 24189 | insn_code icode; |
5f3bc026 | 24190 | struct expand_operand ops[6]; |
c8012fbc | 24191 | int aarch64_cond; |
5f3bc026 | 24192 | |
cb4347e8 | 24193 | push_to_sequence (*prep_seq); |
5f3bc026 ZC |
24194 | expand_operands (treeop0, treeop1, NULL_RTX, &op0, &op1, EXPAND_NORMAL); |
24195 | ||
24196 | op_mode = GET_MODE (op0); | |
24197 | if (op_mode == VOIDmode) | |
24198 | op_mode = GET_MODE (op1); | |
24199 | ||
24200 | switch (op_mode) | |
24201 | { | |
4e10a5a7 RS |
24202 | case E_QImode: |
24203 | case E_HImode: | |
24204 | case E_SImode: | |
5f3bc026 | 24205 | cmp_mode = SImode; |
5f3bc026 ZC |
24206 | break; |
24207 | ||
4e10a5a7 | 24208 | case E_DImode: |
5f3bc026 | 24209 | cmp_mode = DImode; |
5f3bc026 ZC |
24210 | break; |
24211 | ||
4e10a5a7 | 24212 | case E_SFmode: |
786e3c06 WD |
24213 | cmp_mode = SFmode; |
24214 | cc_mode = aarch64_select_cc_mode ((rtx_code) cmp_code, op0, op1); | |
786e3c06 WD |
24215 | break; |
24216 | ||
4e10a5a7 | 24217 | case E_DFmode: |
786e3c06 WD |
24218 | cmp_mode = DFmode; |
24219 | cc_mode = aarch64_select_cc_mode ((rtx_code) cmp_code, op0, op1); | |
786e3c06 WD |
24220 | break; |
24221 | ||
5f3bc026 ZC |
24222 | default: |
24223 | end_sequence (); | |
24224 | return NULL_RTX; | |
24225 | } | |
24226 | ||
865257c4 RS |
24227 | icode = code_for_ccmp (cc_mode, cmp_mode); |
24228 | ||
5f3bc026 ZC |
24229 | op0 = prepare_operand (icode, op0, 2, op_mode, cmp_mode, unsignedp); |
24230 | op1 = prepare_operand (icode, op1, 3, op_mode, cmp_mode, unsignedp); | |
24231 | if (!op0 || !op1) | |
24232 | { | |
24233 | end_sequence (); | |
24234 | return NULL_RTX; | |
24235 | } | |
24236 | *prep_seq = get_insns (); | |
24237 | end_sequence (); | |
24238 | ||
24239 | target = gen_rtx_REG (cc_mode, CC_REGNUM); | |
c8012fbc | 24240 | aarch64_cond = aarch64_get_condition_code_1 (cc_mode, (rtx_code) cmp_code); |
5f3bc026 | 24241 | |
c8012fbc WD |
24242 | if (bit_code != AND) |
24243 | { | |
865257c4 RS |
24244 | /* Treat the ccmp patterns as canonical and use them where possible, |
24245 | but fall back to ccmp_rev patterns if there's no other option. */ | |
24246 | rtx_code prev_code = GET_CODE (prev); | |
24247 | machine_mode prev_mode = GET_MODE (XEXP (prev, 0)); | |
24248 | if ((prev_mode == CCFPmode || prev_mode == CCFPEmode) | |
24249 | && !(prev_code == EQ | |
24250 | || prev_code == NE | |
24251 | || prev_code == ORDERED | |
24252 | || prev_code == UNORDERED)) | |
24253 | icode = code_for_ccmp_rev (cc_mode, cmp_mode); | |
24254 | else | |
24255 | { | |
24256 | rtx_code code = reverse_condition (prev_code); | |
24257 | prev = gen_rtx_fmt_ee (code, VOIDmode, XEXP (prev, 0), const0_rtx); | |
24258 | } | |
c8012fbc WD |
24259 | aarch64_cond = AARCH64_INVERSE_CONDITION_CODE (aarch64_cond); |
24260 | } | |
24261 | ||
24262 | create_fixed_operand (&ops[0], XEXP (prev, 0)); | |
5f3bc026 ZC |
24263 | create_fixed_operand (&ops[1], target); |
24264 | create_fixed_operand (&ops[2], op0); | |
24265 | create_fixed_operand (&ops[3], op1); | |
c8012fbc WD |
24266 | create_fixed_operand (&ops[4], prev); |
24267 | create_fixed_operand (&ops[5], GEN_INT (aarch64_cond)); | |
5f3bc026 | 24268 | |
cb4347e8 | 24269 | push_to_sequence (*gen_seq); |
5f3bc026 ZC |
24270 | if (!maybe_expand_insn (icode, 6, ops)) |
24271 | { | |
24272 | end_sequence (); | |
24273 | return NULL_RTX; | |
24274 | } | |
24275 | ||
24276 | *gen_seq = get_insns (); | |
24277 | end_sequence (); | |
24278 | ||
c8012fbc | 24279 | return gen_rtx_fmt_ee ((rtx_code) cmp_code, VOIDmode, target, const0_rtx); |
5f3bc026 ZC |
24280 | } |
24281 | ||
24282 | #undef TARGET_GEN_CCMP_FIRST | |
24283 | #define TARGET_GEN_CCMP_FIRST aarch64_gen_ccmp_first | |
24284 | ||
24285 | #undef TARGET_GEN_CCMP_NEXT | |
24286 | #define TARGET_GEN_CCMP_NEXT aarch64_gen_ccmp_next | |
24287 | ||
6a569cdd KT |
24288 | /* Implement TARGET_SCHED_MACRO_FUSION_P. Return true if target supports |
24289 | instruction fusion of some sort. */ | |
24290 | ||
24291 | static bool | |
24292 | aarch64_macro_fusion_p (void) | |
24293 | { | |
b175b679 | 24294 | return aarch64_tune_params.fusible_ops != AARCH64_FUSE_NOTHING; |
6a569cdd KT |
24295 | } |
24296 | ||
24297 | ||
24298 | /* Implement TARGET_SCHED_MACRO_FUSION_PAIR_P. Return true if PREV and CURR | |
24299 | should be kept together during scheduling. */ | |
24300 | ||
24301 | static bool | |
24302 | aarch_macro_fusion_pair_p (rtx_insn *prev, rtx_insn *curr) | |
24303 | { | |
24304 | rtx set_dest; | |
24305 | rtx prev_set = single_set (prev); | |
24306 | rtx curr_set = single_set (curr); | |
24307 | /* prev and curr are simple SET insns i.e. no flag setting or branching. */ | |
24308 | bool simple_sets_p = prev_set && curr_set && !any_condjump_p (curr); | |
24309 | ||
24310 | if (!aarch64_macro_fusion_p ()) | |
24311 | return false; | |
24312 | ||
d7b03373 | 24313 | if (simple_sets_p && aarch64_fusion_enabled_p (AARCH64_FUSE_MOV_MOVK)) |
6a569cdd KT |
24314 | { |
24315 | /* We are trying to match: | |
24316 | prev (mov) == (set (reg r0) (const_int imm16)) | |
24317 | curr (movk) == (set (zero_extract (reg r0) | |
24318 | (const_int 16) | |
24319 | (const_int 16)) | |
24320 | (const_int imm16_1)) */ | |
24321 | ||
24322 | set_dest = SET_DEST (curr_set); | |
24323 | ||
24324 | if (GET_CODE (set_dest) == ZERO_EXTRACT | |
24325 | && CONST_INT_P (SET_SRC (curr_set)) | |
24326 | && CONST_INT_P (SET_SRC (prev_set)) | |
24327 | && CONST_INT_P (XEXP (set_dest, 2)) | |
24328 | && INTVAL (XEXP (set_dest, 2)) == 16 | |
24329 | && REG_P (XEXP (set_dest, 0)) | |
24330 | && REG_P (SET_DEST (prev_set)) | |
24331 | && REGNO (XEXP (set_dest, 0)) == REGNO (SET_DEST (prev_set))) | |
24332 | { | |
24333 | return true; | |
24334 | } | |
24335 | } | |
24336 | ||
d7b03373 | 24337 | if (simple_sets_p && aarch64_fusion_enabled_p (AARCH64_FUSE_ADRP_ADD)) |
9bbe08fe KT |
24338 | { |
24339 | ||
24340 | /* We're trying to match: | |
24341 | prev (adrp) == (set (reg r1) | |
24342 | (high (symbol_ref ("SYM")))) | |
24343 | curr (add) == (set (reg r0) | |
24344 | (lo_sum (reg r1) | |
24345 | (symbol_ref ("SYM")))) | |
24346 | Note that r0 need not necessarily be the same as r1, especially | |
24347 | during pre-regalloc scheduling. */ | |
24348 | ||
24349 | if (satisfies_constraint_Ush (SET_SRC (prev_set)) | |
24350 | && REG_P (SET_DEST (prev_set)) && REG_P (SET_DEST (curr_set))) | |
24351 | { | |
24352 | if (GET_CODE (SET_SRC (curr_set)) == LO_SUM | |
24353 | && REG_P (XEXP (SET_SRC (curr_set), 0)) | |
24354 | && REGNO (XEXP (SET_SRC (curr_set), 0)) | |
24355 | == REGNO (SET_DEST (prev_set)) | |
24356 | && rtx_equal_p (XEXP (SET_SRC (prev_set), 0), | |
24357 | XEXP (SET_SRC (curr_set), 1))) | |
24358 | return true; | |
24359 | } | |
24360 | } | |
24361 | ||
d7b03373 | 24362 | if (simple_sets_p && aarch64_fusion_enabled_p (AARCH64_FUSE_MOVK_MOVK)) |
cd0cb232 KT |
24363 | { |
24364 | ||
24365 | /* We're trying to match: | |
24366 | prev (movk) == (set (zero_extract (reg r0) | |
24367 | (const_int 16) | |
24368 | (const_int 32)) | |
24369 | (const_int imm16_1)) | |
24370 | curr (movk) == (set (zero_extract (reg r0) | |
24371 | (const_int 16) | |
24372 | (const_int 48)) | |
24373 | (const_int imm16_2)) */ | |
24374 | ||
24375 | if (GET_CODE (SET_DEST (prev_set)) == ZERO_EXTRACT | |
24376 | && GET_CODE (SET_DEST (curr_set)) == ZERO_EXTRACT | |
24377 | && REG_P (XEXP (SET_DEST (prev_set), 0)) | |
24378 | && REG_P (XEXP (SET_DEST (curr_set), 0)) | |
24379 | && REGNO (XEXP (SET_DEST (prev_set), 0)) | |
24380 | == REGNO (XEXP (SET_DEST (curr_set), 0)) | |
24381 | && CONST_INT_P (XEXP (SET_DEST (prev_set), 2)) | |
24382 | && CONST_INT_P (XEXP (SET_DEST (curr_set), 2)) | |
24383 | && INTVAL (XEXP (SET_DEST (prev_set), 2)) == 32 | |
24384 | && INTVAL (XEXP (SET_DEST (curr_set), 2)) == 48 | |
24385 | && CONST_INT_P (SET_SRC (prev_set)) | |
24386 | && CONST_INT_P (SET_SRC (curr_set))) | |
24387 | return true; | |
24388 | ||
24389 | } | |
d7b03373 | 24390 | if (simple_sets_p && aarch64_fusion_enabled_p (AARCH64_FUSE_ADRP_LDR)) |
d8354ad7 KT |
24391 | { |
24392 | /* We're trying to match: | |
24393 | prev (adrp) == (set (reg r0) | |
24394 | (high (symbol_ref ("SYM")))) | |
24395 | curr (ldr) == (set (reg r1) | |
24396 | (mem (lo_sum (reg r0) | |
24397 | (symbol_ref ("SYM"))))) | |
24398 | or | |
24399 | curr (ldr) == (set (reg r1) | |
24400 | (zero_extend (mem | |
24401 | (lo_sum (reg r0) | |
24402 | (symbol_ref ("SYM")))))) */ | |
24403 | if (satisfies_constraint_Ush (SET_SRC (prev_set)) | |
24404 | && REG_P (SET_DEST (prev_set)) && REG_P (SET_DEST (curr_set))) | |
24405 | { | |
24406 | rtx curr_src = SET_SRC (curr_set); | |
24407 | ||
24408 | if (GET_CODE (curr_src) == ZERO_EXTEND) | |
24409 | curr_src = XEXP (curr_src, 0); | |
24410 | ||
24411 | if (MEM_P (curr_src) && GET_CODE (XEXP (curr_src, 0)) == LO_SUM | |
24412 | && REG_P (XEXP (XEXP (curr_src, 0), 0)) | |
24413 | && REGNO (XEXP (XEXP (curr_src, 0), 0)) | |
24414 | == REGNO (SET_DEST (prev_set)) | |
24415 | && rtx_equal_p (XEXP (XEXP (curr_src, 0), 1), | |
24416 | XEXP (SET_SRC (prev_set), 0))) | |
24417 | return true; | |
24418 | } | |
24419 | } | |
cd0cb232 | 24420 | |
a4f3fa71 | 24421 | /* Fuse compare (CMP/CMN/TST/BICS) and conditional branch. */ |
d7b03373 | 24422 | if (aarch64_fusion_enabled_p (AARCH64_FUSE_CMP_BRANCH) |
a4f3fa71 WD |
24423 | && prev_set && curr_set && any_condjump_p (curr) |
24424 | && GET_CODE (SET_SRC (prev_set)) == COMPARE | |
24425 | && SCALAR_INT_MODE_P (GET_MODE (XEXP (SET_SRC (prev_set), 0))) | |
24426 | && reg_referenced_p (SET_DEST (prev_set), PATTERN (curr))) | |
24427 | return true; | |
24428 | ||
24429 | /* Fuse flag-setting ALU instructions and conditional branch. */ | |
24430 | if (aarch64_fusion_enabled_p (AARCH64_FUSE_ALU_BRANCH) | |
3759108f AP |
24431 | && any_condjump_p (curr)) |
24432 | { | |
509f819a N |
24433 | unsigned int condreg1, condreg2; |
24434 | rtx cc_reg_1; | |
24435 | aarch64_fixed_condition_code_regs (&condreg1, &condreg2); | |
24436 | cc_reg_1 = gen_rtx_REG (CCmode, condreg1); | |
24437 | ||
24438 | if (reg_referenced_p (cc_reg_1, PATTERN (curr)) | |
24439 | && prev | |
24440 | && modified_in_p (cc_reg_1, prev)) | |
24441 | { | |
f8a27206 AP |
24442 | enum attr_type prev_type = get_attr_type (prev); |
24443 | ||
509f819a N |
24444 | /* FIXME: this misses some which is considered simple arthematic |
24445 | instructions for ThunderX. Simple shifts are missed here. */ | |
24446 | if (prev_type == TYPE_ALUS_SREG | |
24447 | || prev_type == TYPE_ALUS_IMM | |
24448 | || prev_type == TYPE_LOGICS_REG | |
24449 | || prev_type == TYPE_LOGICS_IMM) | |
24450 | return true; | |
24451 | } | |
3759108f AP |
24452 | } |
24453 | ||
a4f3fa71 | 24454 | /* Fuse ALU instructions and CBZ/CBNZ. */ |
bee7e0fc AP |
24455 | if (prev_set |
24456 | && curr_set | |
a4f3fa71 | 24457 | && aarch64_fusion_enabled_p (AARCH64_FUSE_ALU_CBZ) |
00c7c57f JB |
24458 | && any_condjump_p (curr)) |
24459 | { | |
24460 | /* We're trying to match: | |
24461 | prev (alu_insn) == (set (r0) plus ((r0) (r1/imm))) | |
24462 | curr (cbz) == (set (pc) (if_then_else (eq/ne) (r0) | |
24463 | (const_int 0)) | |
24464 | (label_ref ("SYM")) | |
24465 | (pc)) */ | |
24466 | if (SET_DEST (curr_set) == (pc_rtx) | |
24467 | && GET_CODE (SET_SRC (curr_set)) == IF_THEN_ELSE | |
24468 | && REG_P (XEXP (XEXP (SET_SRC (curr_set), 0), 0)) | |
24469 | && REG_P (SET_DEST (prev_set)) | |
24470 | && REGNO (SET_DEST (prev_set)) | |
24471 | == REGNO (XEXP (XEXP (SET_SRC (curr_set), 0), 0))) | |
24472 | { | |
24473 | /* Fuse ALU operations followed by conditional branch instruction. */ | |
24474 | switch (get_attr_type (prev)) | |
24475 | { | |
24476 | case TYPE_ALU_IMM: | |
24477 | case TYPE_ALU_SREG: | |
24478 | case TYPE_ADC_REG: | |
24479 | case TYPE_ADC_IMM: | |
24480 | case TYPE_ADCS_REG: | |
24481 | case TYPE_ADCS_IMM: | |
24482 | case TYPE_LOGIC_REG: | |
24483 | case TYPE_LOGIC_IMM: | |
24484 | case TYPE_CSEL: | |
24485 | case TYPE_ADR: | |
24486 | case TYPE_MOV_IMM: | |
24487 | case TYPE_SHIFT_REG: | |
24488 | case TYPE_SHIFT_IMM: | |
24489 | case TYPE_BFM: | |
24490 | case TYPE_RBIT: | |
24491 | case TYPE_REV: | |
24492 | case TYPE_EXTEND: | |
24493 | return true; | |
24494 | ||
24495 | default:; | |
24496 | } | |
24497 | } | |
24498 | } | |
24499 | ||
6a569cdd KT |
24500 | return false; |
24501 | } | |
24502 | ||
f2879a90 KT |
24503 | /* Return true iff the instruction fusion described by OP is enabled. */ |
24504 | ||
24505 | bool | |
24506 | aarch64_fusion_enabled_p (enum aarch64_fusion_pairs op) | |
24507 | { | |
24508 | return (aarch64_tune_params.fusible_ops & op) != 0; | |
24509 | } | |
24510 | ||
350013bc BC |
24511 | /* If MEM is in the form of [base+offset], extract the two parts |
24512 | of address and set to BASE and OFFSET, otherwise return false | |
24513 | after clearing BASE and OFFSET. */ | |
24514 | ||
24515 | bool | |
24516 | extract_base_offset_in_addr (rtx mem, rtx *base, rtx *offset) | |
24517 | { | |
24518 | rtx addr; | |
24519 | ||
24520 | gcc_assert (MEM_P (mem)); | |
24521 | ||
24522 | addr = XEXP (mem, 0); | |
24523 | ||
24524 | if (REG_P (addr)) | |
24525 | { | |
24526 | *base = addr; | |
24527 | *offset = const0_rtx; | |
24528 | return true; | |
24529 | } | |
24530 | ||
24531 | if (GET_CODE (addr) == PLUS | |
24532 | && REG_P (XEXP (addr, 0)) && CONST_INT_P (XEXP (addr, 1))) | |
24533 | { | |
24534 | *base = XEXP (addr, 0); | |
24535 | *offset = XEXP (addr, 1); | |
24536 | return true; | |
24537 | } | |
24538 | ||
24539 | *base = NULL_RTX; | |
24540 | *offset = NULL_RTX; | |
24541 | ||
24542 | return false; | |
24543 | } | |
24544 | ||
24545 | /* Types for scheduling fusion. */ | |
24546 | enum sched_fusion_type | |
24547 | { | |
24548 | SCHED_FUSION_NONE = 0, | |
24549 | SCHED_FUSION_LD_SIGN_EXTEND, | |
24550 | SCHED_FUSION_LD_ZERO_EXTEND, | |
24551 | SCHED_FUSION_LD, | |
24552 | SCHED_FUSION_ST, | |
24553 | SCHED_FUSION_NUM | |
24554 | }; | |
24555 | ||
24556 | /* If INSN is a load or store of address in the form of [base+offset], | |
24557 | extract the two parts and set to BASE and OFFSET. Return scheduling | |
24558 | fusion type this INSN is. */ | |
24559 | ||
24560 | static enum sched_fusion_type | |
24561 | fusion_load_store (rtx_insn *insn, rtx *base, rtx *offset) | |
24562 | { | |
24563 | rtx x, dest, src; | |
24564 | enum sched_fusion_type fusion = SCHED_FUSION_LD; | |
24565 | ||
24566 | gcc_assert (INSN_P (insn)); | |
24567 | x = PATTERN (insn); | |
24568 | if (GET_CODE (x) != SET) | |
24569 | return SCHED_FUSION_NONE; | |
24570 | ||
24571 | src = SET_SRC (x); | |
24572 | dest = SET_DEST (x); | |
24573 | ||
abc52318 KT |
24574 | machine_mode dest_mode = GET_MODE (dest); |
24575 | ||
24576 | if (!aarch64_mode_valid_for_sched_fusion_p (dest_mode)) | |
350013bc BC |
24577 | return SCHED_FUSION_NONE; |
24578 | ||
24579 | if (GET_CODE (src) == SIGN_EXTEND) | |
24580 | { | |
24581 | fusion = SCHED_FUSION_LD_SIGN_EXTEND; | |
24582 | src = XEXP (src, 0); | |
3793ecc1 | 24583 | if (!MEM_P (src) || GET_MODE (src) != SImode) |
350013bc BC |
24584 | return SCHED_FUSION_NONE; |
24585 | } | |
24586 | else if (GET_CODE (src) == ZERO_EXTEND) | |
24587 | { | |
24588 | fusion = SCHED_FUSION_LD_ZERO_EXTEND; | |
24589 | src = XEXP (src, 0); | |
3793ecc1 | 24590 | if (!MEM_P (src) || GET_MODE (src) != SImode) |
350013bc BC |
24591 | return SCHED_FUSION_NONE; |
24592 | } | |
24593 | ||
3793ecc1 | 24594 | if (MEM_P (src) && REG_P (dest)) |
350013bc | 24595 | extract_base_offset_in_addr (src, base, offset); |
3793ecc1 | 24596 | else if (MEM_P (dest) && (REG_P (src) || src == const0_rtx)) |
350013bc BC |
24597 | { |
24598 | fusion = SCHED_FUSION_ST; | |
24599 | extract_base_offset_in_addr (dest, base, offset); | |
24600 | } | |
24601 | else | |
24602 | return SCHED_FUSION_NONE; | |
24603 | ||
24604 | if (*base == NULL_RTX || *offset == NULL_RTX) | |
24605 | fusion = SCHED_FUSION_NONE; | |
24606 | ||
24607 | return fusion; | |
24608 | } | |
24609 | ||
24610 | /* Implement the TARGET_SCHED_FUSION_PRIORITY hook. | |
24611 | ||
24612 | Currently we only support to fuse ldr or str instructions, so FUSION_PRI | |
24613 | and PRI are only calculated for these instructions. For other instruction, | |
24614 | FUSION_PRI and PRI are simply set to MAX_PRI - 1. In the future, other | |
24615 | type instruction fusion can be added by returning different priorities. | |
24616 | ||
24617 | It's important that irrelevant instructions get the largest FUSION_PRI. */ | |
24618 | ||
24619 | static void | |
24620 | aarch64_sched_fusion_priority (rtx_insn *insn, int max_pri, | |
24621 | int *fusion_pri, int *pri) | |
24622 | { | |
24623 | int tmp, off_val; | |
24624 | rtx base, offset; | |
24625 | enum sched_fusion_type fusion; | |
24626 | ||
24627 | gcc_assert (INSN_P (insn)); | |
24628 | ||
24629 | tmp = max_pri - 1; | |
24630 | fusion = fusion_load_store (insn, &base, &offset); | |
24631 | if (fusion == SCHED_FUSION_NONE) | |
24632 | { | |
24633 | *pri = tmp; | |
24634 | *fusion_pri = tmp; | |
24635 | return; | |
24636 | } | |
24637 | ||
24638 | /* Set FUSION_PRI according to fusion type and base register. */ | |
24639 | *fusion_pri = tmp - fusion * FIRST_PSEUDO_REGISTER - REGNO (base); | |
24640 | ||
24641 | /* Calculate PRI. */ | |
24642 | tmp /= 2; | |
24643 | ||
24644 | /* INSN with smaller offset goes first. */ | |
24645 | off_val = (int)(INTVAL (offset)); | |
24646 | if (off_val >= 0) | |
24647 | tmp -= (off_val & 0xfffff); | |
24648 | else | |
24649 | tmp += ((- off_val) & 0xfffff); | |
24650 | ||
24651 | *pri = tmp; | |
24652 | return; | |
24653 | } | |
24654 | ||
9bca63d4 WD |
24655 | /* Implement the TARGET_SCHED_ADJUST_PRIORITY hook. |
24656 | Adjust priority of sha1h instructions so they are scheduled before | |
24657 | other SHA1 instructions. */ | |
24658 | ||
24659 | static int | |
24660 | aarch64_sched_adjust_priority (rtx_insn *insn, int priority) | |
24661 | { | |
24662 | rtx x = PATTERN (insn); | |
24663 | ||
24664 | if (GET_CODE (x) == SET) | |
24665 | { | |
24666 | x = SET_SRC (x); | |
24667 | ||
24668 | if (GET_CODE (x) == UNSPEC && XINT (x, 1) == UNSPEC_SHA1H) | |
24669 | return priority + 10; | |
24670 | } | |
24671 | ||
24672 | return priority; | |
24673 | } | |
24674 | ||
526e1639 RS |
24675 | /* Check if *MEM1 and *MEM2 are consecutive memory references and, |
24676 | if they are, try to make them use constant offsets from the same base | |
24677 | register. Return true on success. When returning true, set *REVERSED | |
24678 | to true if *MEM1 comes after *MEM2, false if *MEM1 comes before *MEM2. */ | |
24679 | static bool | |
24680 | aarch64_check_consecutive_mems (rtx *mem1, rtx *mem2, bool *reversed) | |
24681 | { | |
24682 | *reversed = false; | |
24683 | if (GET_RTX_CLASS (GET_CODE (XEXP (*mem1, 0))) == RTX_AUTOINC | |
24684 | || GET_RTX_CLASS (GET_CODE (XEXP (*mem2, 0))) == RTX_AUTOINC) | |
24685 | return false; | |
24686 | ||
24687 | if (!MEM_SIZE_KNOWN_P (*mem1) || !MEM_SIZE_KNOWN_P (*mem2)) | |
24688 | return false; | |
24689 | ||
24690 | auto size1 = MEM_SIZE (*mem1); | |
24691 | auto size2 = MEM_SIZE (*mem2); | |
24692 | ||
24693 | rtx base1, base2, offset1, offset2; | |
24694 | extract_base_offset_in_addr (*mem1, &base1, &offset1); | |
24695 | extract_base_offset_in_addr (*mem2, &base2, &offset2); | |
24696 | ||
24697 | /* Make sure at least one memory is in base+offset form. */ | |
24698 | if (!(base1 && offset1) && !(base2 && offset2)) | |
24699 | return false; | |
24700 | ||
24701 | /* If both mems already use the same base register, just check the | |
24702 | offsets. */ | |
24703 | if (base1 && base2 && rtx_equal_p (base1, base2)) | |
24704 | { | |
24705 | if (!offset1 || !offset2) | |
24706 | return false; | |
24707 | ||
24708 | if (known_eq (UINTVAL (offset1) + size1, UINTVAL (offset2))) | |
24709 | return true; | |
24710 | ||
24711 | if (known_eq (UINTVAL (offset2) + size2, UINTVAL (offset1))) | |
24712 | { | |
24713 | *reversed = true; | |
24714 | return true; | |
24715 | } | |
24716 | ||
24717 | return false; | |
24718 | } | |
24719 | ||
24720 | /* Otherwise, check whether the MEM_EXPRs and MEM_OFFSETs together | |
24721 | guarantee that the values are consecutive. */ | |
24722 | if (MEM_EXPR (*mem1) | |
24723 | && MEM_EXPR (*mem2) | |
24724 | && MEM_OFFSET_KNOWN_P (*mem1) | |
24725 | && MEM_OFFSET_KNOWN_P (*mem2)) | |
24726 | { | |
24727 | poly_int64 expr_offset1; | |
24728 | poly_int64 expr_offset2; | |
24729 | tree expr_base1 = get_addr_base_and_unit_offset (MEM_EXPR (*mem1), | |
24730 | &expr_offset1); | |
24731 | tree expr_base2 = get_addr_base_and_unit_offset (MEM_EXPR (*mem2), | |
24732 | &expr_offset2); | |
24733 | if (!expr_base1 | |
24734 | || !expr_base2 | |
24735 | || !operand_equal_p (expr_base1, expr_base2, OEP_ADDRESS_OF)) | |
24736 | return false; | |
24737 | ||
24738 | expr_offset1 += MEM_OFFSET (*mem1); | |
24739 | expr_offset2 += MEM_OFFSET (*mem2); | |
24740 | ||
24741 | if (known_eq (expr_offset1 + size1, expr_offset2)) | |
24742 | ; | |
24743 | else if (known_eq (expr_offset2 + size2, expr_offset1)) | |
24744 | *reversed = true; | |
24745 | else | |
24746 | return false; | |
24747 | ||
24748 | if (base2) | |
24749 | { | |
24750 | rtx addr1 = plus_constant (Pmode, XEXP (*mem2, 0), | |
24751 | expr_offset1 - expr_offset2); | |
24752 | *mem1 = replace_equiv_address_nv (*mem1, addr1); | |
24753 | } | |
24754 | else | |
24755 | { | |
24756 | rtx addr2 = plus_constant (Pmode, XEXP (*mem1, 0), | |
24757 | expr_offset2 - expr_offset1); | |
24758 | *mem2 = replace_equiv_address_nv (*mem2, addr2); | |
24759 | } | |
24760 | return true; | |
24761 | } | |
24762 | ||
24763 | return false; | |
24764 | } | |
24765 | ||
350013bc BC |
24766 | /* Given OPERANDS of consecutive load/store, check if we can merge |
24767 | them into ldp/stp. LOAD is true if they are load instructions. | |
24768 | MODE is the mode of memory operands. */ | |
24769 | ||
24770 | bool | |
24771 | aarch64_operands_ok_for_ldpstp (rtx *operands, bool load, | |
b8506a8a | 24772 | machine_mode mode) |
350013bc | 24773 | { |
350013bc | 24774 | enum reg_class rclass_1, rclass_2; |
526e1639 | 24775 | rtx mem_1, mem_2, reg_1, reg_2; |
350013bc BC |
24776 | |
24777 | if (load) | |
24778 | { | |
24779 | mem_1 = operands[1]; | |
24780 | mem_2 = operands[3]; | |
24781 | reg_1 = operands[0]; | |
24782 | reg_2 = operands[2]; | |
24783 | gcc_assert (REG_P (reg_1) && REG_P (reg_2)); | |
24784 | if (REGNO (reg_1) == REGNO (reg_2)) | |
24785 | return false; | |
526e1639 RS |
24786 | if (reg_overlap_mentioned_p (reg_1, mem_2)) |
24787 | return false; | |
350013bc BC |
24788 | } |
24789 | else | |
24790 | { | |
24791 | mem_1 = operands[0]; | |
24792 | mem_2 = operands[2]; | |
24793 | reg_1 = operands[1]; | |
24794 | reg_2 = operands[3]; | |
24795 | } | |
24796 | ||
bf84ac44 AP |
24797 | /* The mems cannot be volatile. */ |
24798 | if (MEM_VOLATILE_P (mem_1) || MEM_VOLATILE_P (mem_2)) | |
24799 | return false; | |
24800 | ||
54700e2e AP |
24801 | /* If we have SImode and slow unaligned ldp, |
24802 | check the alignment to be at least 8 byte. */ | |
24803 | if (mode == SImode | |
24804 | && (aarch64_tune_params.extra_tuning_flags | |
24805 | & AARCH64_EXTRA_TUNE_SLOW_UNALIGNED_LDPW) | |
24806 | && !optimize_size | |
24807 | && MEM_ALIGN (mem_1) < 8 * BITS_PER_UNIT) | |
24808 | return false; | |
24809 | ||
350013bc | 24810 | /* Check if the addresses are in the form of [base+offset]. */ |
526e1639 RS |
24811 | bool reversed = false; |
24812 | if (!aarch64_check_consecutive_mems (&mem_1, &mem_2, &reversed)) | |
350013bc BC |
24813 | return false; |
24814 | ||
dfe1da23 JW |
24815 | /* The operands must be of the same size. */ |
24816 | gcc_assert (known_eq (GET_MODE_SIZE (GET_MODE (mem_1)), | |
526e1639 | 24817 | GET_MODE_SIZE (GET_MODE (mem_2)))); |
350013bc | 24818 | |
9b56ec11 JW |
24819 | /* One of the memory accesses must be a mempair operand. |
24820 | If it is not the first one, they need to be swapped by the | |
24821 | peephole. */ | |
24822 | if (!aarch64_mem_pair_operand (mem_1, GET_MODE (mem_1)) | |
24823 | && !aarch64_mem_pair_operand (mem_2, GET_MODE (mem_2))) | |
24824 | return false; | |
24825 | ||
350013bc BC |
24826 | if (REG_P (reg_1) && FP_REGNUM_P (REGNO (reg_1))) |
24827 | rclass_1 = FP_REGS; | |
24828 | else | |
24829 | rclass_1 = GENERAL_REGS; | |
24830 | ||
24831 | if (REG_P (reg_2) && FP_REGNUM_P (REGNO (reg_2))) | |
24832 | rclass_2 = FP_REGS; | |
24833 | else | |
24834 | rclass_2 = GENERAL_REGS; | |
24835 | ||
24836 | /* Check if the registers are of same class. */ | |
24837 | if (rclass_1 != rclass_2) | |
24838 | return false; | |
24839 | ||
24840 | return true; | |
24841 | } | |
24842 | ||
9b56ec11 JW |
24843 | /* Given OPERANDS of consecutive load/store that can be merged, |
24844 | swap them if they are not in ascending order. */ | |
24845 | void | |
24846 | aarch64_swap_ldrstr_operands (rtx* operands, bool load) | |
24847 | { | |
526e1639 RS |
24848 | int mem_op = load ? 1 : 0; |
24849 | bool reversed = false; | |
24850 | if (!aarch64_check_consecutive_mems (operands + mem_op, | |
24851 | operands + mem_op + 2, &reversed)) | |
24852 | gcc_unreachable (); | |
9b56ec11 | 24853 | |
526e1639 | 24854 | if (reversed) |
9b56ec11 JW |
24855 | { |
24856 | /* Irrespective of whether this is a load or a store, | |
24857 | we do the same swap. */ | |
24858 | std::swap (operands[0], operands[2]); | |
24859 | std::swap (operands[1], operands[3]); | |
24860 | } | |
24861 | } | |
24862 | ||
d0b51297 JW |
24863 | /* Taking X and Y to be HOST_WIDE_INT pointers, return the result of a |
24864 | comparison between the two. */ | |
24865 | int | |
24866 | aarch64_host_wide_int_compare (const void *x, const void *y) | |
24867 | { | |
24868 | return wi::cmps (* ((const HOST_WIDE_INT *) x), | |
24869 | * ((const HOST_WIDE_INT *) y)); | |
24870 | } | |
24871 | ||
24872 | /* Taking X and Y to be pairs of RTX, one pointing to a MEM rtx and the | |
24873 | other pointing to a REG rtx containing an offset, compare the offsets | |
24874 | of the two pairs. | |
24875 | ||
24876 | Return: | |
24877 | ||
24878 | 1 iff offset (X) > offset (Y) | |
24879 | 0 iff offset (X) == offset (Y) | |
24880 | -1 iff offset (X) < offset (Y) */ | |
24881 | int | |
24882 | aarch64_ldrstr_offset_compare (const void *x, const void *y) | |
24883 | { | |
24884 | const rtx * operands_1 = (const rtx *) x; | |
24885 | const rtx * operands_2 = (const rtx *) y; | |
24886 | rtx mem_1, mem_2, base, offset_1, offset_2; | |
24887 | ||
24888 | if (MEM_P (operands_1[0])) | |
24889 | mem_1 = operands_1[0]; | |
24890 | else | |
24891 | mem_1 = operands_1[1]; | |
24892 | ||
24893 | if (MEM_P (operands_2[0])) | |
24894 | mem_2 = operands_2[0]; | |
24895 | else | |
24896 | mem_2 = operands_2[1]; | |
24897 | ||
24898 | /* Extract the offsets. */ | |
24899 | extract_base_offset_in_addr (mem_1, &base, &offset_1); | |
24900 | extract_base_offset_in_addr (mem_2, &base, &offset_2); | |
24901 | ||
24902 | gcc_assert (offset_1 != NULL_RTX && offset_2 != NULL_RTX); | |
24903 | ||
24904 | return wi::cmps (INTVAL (offset_1), INTVAL (offset_2)); | |
24905 | } | |
24906 | ||
350013bc BC |
24907 | /* Given OPERANDS of consecutive load/store, check if we can merge |
24908 | them into ldp/stp by adjusting the offset. LOAD is true if they | |
24909 | are load instructions. MODE is the mode of memory operands. | |
24910 | ||
24911 | Given below consecutive stores: | |
24912 | ||
24913 | str w1, [xb, 0x100] | |
24914 | str w1, [xb, 0x104] | |
24915 | str w1, [xb, 0x108] | |
24916 | str w1, [xb, 0x10c] | |
24917 | ||
24918 | Though the offsets are out of the range supported by stp, we can | |
24919 | still pair them after adjusting the offset, like: | |
24920 | ||
24921 | add scratch, xb, 0x100 | |
24922 | stp w1, w1, [scratch] | |
24923 | stp w1, w1, [scratch, 0x8] | |
24924 | ||
24925 | The peephole patterns detecting this opportunity should guarantee | |
24926 | the scratch register is avaliable. */ | |
24927 | ||
24928 | bool | |
24929 | aarch64_operands_adjust_ok_for_ldpstp (rtx *operands, bool load, | |
cd91a084 | 24930 | machine_mode mode) |
350013bc | 24931 | { |
34d7854d JW |
24932 | const int num_insns = 4; |
24933 | enum reg_class rclass; | |
24934 | HOST_WIDE_INT offvals[num_insns], msize; | |
24935 | rtx mem[num_insns], reg[num_insns], base[num_insns], offset[num_insns]; | |
350013bc BC |
24936 | |
24937 | if (load) | |
24938 | { | |
34d7854d JW |
24939 | for (int i = 0; i < num_insns; i++) |
24940 | { | |
24941 | reg[i] = operands[2 * i]; | |
24942 | mem[i] = operands[2 * i + 1]; | |
24943 | ||
24944 | gcc_assert (REG_P (reg[i])); | |
24945 | } | |
d0b51297 JW |
24946 | |
24947 | /* Do not attempt to merge the loads if the loads clobber each other. */ | |
24948 | for (int i = 0; i < 8; i += 2) | |
24949 | for (int j = i + 2; j < 8; j += 2) | |
24950 | if (reg_overlap_mentioned_p (operands[i], operands[j])) | |
24951 | return false; | |
350013bc BC |
24952 | } |
24953 | else | |
34d7854d JW |
24954 | for (int i = 0; i < num_insns; i++) |
24955 | { | |
24956 | mem[i] = operands[2 * i]; | |
24957 | reg[i] = operands[2 * i + 1]; | |
24958 | } | |
350013bc | 24959 | |
34d7854d JW |
24960 | /* Skip if memory operand is by itself valid for ldp/stp. */ |
24961 | if (!MEM_P (mem[0]) || aarch64_mem_pair_operand (mem[0], mode)) | |
bf84ac44 AP |
24962 | return false; |
24963 | ||
34d7854d JW |
24964 | for (int i = 0; i < num_insns; i++) |
24965 | { | |
24966 | /* The mems cannot be volatile. */ | |
24967 | if (MEM_VOLATILE_P (mem[i])) | |
24968 | return false; | |
24969 | ||
24970 | /* Check if the addresses are in the form of [base+offset]. */ | |
24971 | extract_base_offset_in_addr (mem[i], base + i, offset + i); | |
24972 | if (base[i] == NULL_RTX || offset[i] == NULL_RTX) | |
24973 | return false; | |
24974 | } | |
24975 | ||
363b395b JW |
24976 | /* Check if the registers are of same class. */ |
24977 | rclass = REG_P (reg[0]) && FP_REGNUM_P (REGNO (reg[0])) | |
24978 | ? FP_REGS : GENERAL_REGS; | |
24979 | ||
24980 | for (int i = 1; i < num_insns; i++) | |
24981 | if (REG_P (reg[i]) && FP_REGNUM_P (REGNO (reg[i]))) | |
24982 | { | |
24983 | if (rclass != FP_REGS) | |
24984 | return false; | |
24985 | } | |
24986 | else | |
24987 | { | |
24988 | if (rclass != GENERAL_REGS) | |
24989 | return false; | |
24990 | } | |
24991 | ||
24992 | /* Only the last register in the order in which they occur | |
24993 | may be clobbered by the load. */ | |
24994 | if (rclass == GENERAL_REGS && load) | |
24995 | for (int i = 0; i < num_insns - 1; i++) | |
34d7854d JW |
24996 | if (reg_mentioned_p (reg[i], mem[i])) |
24997 | return false; | |
350013bc BC |
24998 | |
24999 | /* Check if the bases are same. */ | |
34d7854d JW |
25000 | for (int i = 0; i < num_insns - 1; i++) |
25001 | if (!rtx_equal_p (base[i], base[i + 1])) | |
25002 | return false; | |
25003 | ||
25004 | for (int i = 0; i < num_insns; i++) | |
25005 | offvals[i] = INTVAL (offset[i]); | |
350013bc | 25006 | |
cd91a084 | 25007 | msize = GET_MODE_SIZE (mode).to_constant (); |
d0b51297 JW |
25008 | |
25009 | /* Check if the offsets can be put in the right order to do a ldp/stp. */ | |
34d7854d JW |
25010 | qsort (offvals, num_insns, sizeof (HOST_WIDE_INT), |
25011 | aarch64_host_wide_int_compare); | |
d0b51297 JW |
25012 | |
25013 | if (!(offvals[1] == offvals[0] + msize | |
25014 | && offvals[3] == offvals[2] + msize)) | |
350013bc BC |
25015 | return false; |
25016 | ||
d0b51297 JW |
25017 | /* Check that offsets are within range of each other. The ldp/stp |
25018 | instructions have 7 bit immediate offsets, so use 0x80. */ | |
25019 | if (offvals[2] - offvals[0] >= msize * 0x80) | |
25020 | return false; | |
350013bc | 25021 | |
d0b51297 JW |
25022 | /* The offsets must be aligned with respect to each other. */ |
25023 | if (offvals[0] % msize != offvals[2] % msize) | |
25024 | return false; | |
25025 | ||
54700e2e AP |
25026 | /* If we have SImode and slow unaligned ldp, |
25027 | check the alignment to be at least 8 byte. */ | |
25028 | if (mode == SImode | |
25029 | && (aarch64_tune_params.extra_tuning_flags | |
34d7854d | 25030 | & AARCH64_EXTRA_TUNE_SLOW_UNALIGNED_LDPW) |
54700e2e | 25031 | && !optimize_size |
34d7854d | 25032 | && MEM_ALIGN (mem[0]) < 8 * BITS_PER_UNIT) |
54700e2e AP |
25033 | return false; |
25034 | ||
350013bc BC |
25035 | return true; |
25036 | } | |
25037 | ||
25038 | /* Given OPERANDS of consecutive load/store, this function pairs them | |
d0b51297 JW |
25039 | into LDP/STP after adjusting the offset. It depends on the fact |
25040 | that the operands can be sorted so the offsets are correct for STP. | |
350013bc BC |
25041 | MODE is the mode of memory operands. CODE is the rtl operator |
25042 | which should be applied to all memory operands, it's SIGN_EXTEND, | |
25043 | ZERO_EXTEND or UNKNOWN. */ | |
25044 | ||
25045 | bool | |
25046 | aarch64_gen_adjusted_ldpstp (rtx *operands, bool load, | |
cd91a084 | 25047 | machine_mode mode, RTX_CODE code) |
350013bc | 25048 | { |
d0b51297 | 25049 | rtx base, offset_1, offset_3, t1, t2; |
350013bc | 25050 | rtx mem_1, mem_2, mem_3, mem_4; |
d0b51297 JW |
25051 | rtx temp_operands[8]; |
25052 | HOST_WIDE_INT off_val_1, off_val_3, base_off, new_off_1, new_off_3, | |
25053 | stp_off_upper_limit, stp_off_lower_limit, msize; | |
9b56ec11 | 25054 | |
d0b51297 JW |
25055 | /* We make changes on a copy as we may still bail out. */ |
25056 | for (int i = 0; i < 8; i ++) | |
25057 | temp_operands[i] = operands[i]; | |
9b56ec11 | 25058 | |
b662250c BC |
25059 | /* Sort the operands. Note for cases as below: |
25060 | [base + 0x310] = A | |
25061 | [base + 0x320] = B | |
25062 | [base + 0x330] = C | |
25063 | [base + 0x320] = D | |
25064 | We need stable sorting otherwise wrong data may be store to offset 0x320. | |
25065 | Also note the dead store in above case should be optimized away, but no | |
25066 | guarantees here. */ | |
25067 | gcc_stablesort(temp_operands, 4, 2 * sizeof (rtx *), | |
25068 | aarch64_ldrstr_offset_compare); | |
9b56ec11 | 25069 | |
f6af9c21 RE |
25070 | /* Copy the memory operands so that if we have to bail for some |
25071 | reason the original addresses are unchanged. */ | |
350013bc BC |
25072 | if (load) |
25073 | { | |
f6af9c21 RE |
25074 | mem_1 = copy_rtx (temp_operands[1]); |
25075 | mem_2 = copy_rtx (temp_operands[3]); | |
25076 | mem_3 = copy_rtx (temp_operands[5]); | |
25077 | mem_4 = copy_rtx (temp_operands[7]); | |
350013bc BC |
25078 | } |
25079 | else | |
25080 | { | |
f6af9c21 RE |
25081 | mem_1 = copy_rtx (temp_operands[0]); |
25082 | mem_2 = copy_rtx (temp_operands[2]); | |
25083 | mem_3 = copy_rtx (temp_operands[4]); | |
25084 | mem_4 = copy_rtx (temp_operands[6]); | |
350013bc BC |
25085 | gcc_assert (code == UNKNOWN); |
25086 | } | |
25087 | ||
9b56ec11 | 25088 | extract_base_offset_in_addr (mem_1, &base, &offset_1); |
d0b51297 JW |
25089 | extract_base_offset_in_addr (mem_3, &base, &offset_3); |
25090 | gcc_assert (base != NULL_RTX && offset_1 != NULL_RTX | |
25091 | && offset_3 != NULL_RTX); | |
350013bc | 25092 | |
d0b51297 | 25093 | /* Adjust offset so it can fit in LDP/STP instruction. */ |
cd91a084 | 25094 | msize = GET_MODE_SIZE (mode).to_constant(); |
d0b51297 JW |
25095 | stp_off_upper_limit = msize * (0x40 - 1); |
25096 | stp_off_lower_limit = - msize * 0x40; | |
350013bc | 25097 | |
d0b51297 JW |
25098 | off_val_1 = INTVAL (offset_1); |
25099 | off_val_3 = INTVAL (offset_3); | |
25100 | ||
25101 | /* The base offset is optimally half way between the two STP/LDP offsets. */ | |
25102 | if (msize <= 4) | |
25103 | base_off = (off_val_1 + off_val_3) / 2; | |
25104 | else | |
25105 | /* However, due to issues with negative LDP/STP offset generation for | |
25106 | larger modes, for DF, DI and vector modes. we must not use negative | |
25107 | addresses smaller than 9 signed unadjusted bits can store. This | |
25108 | provides the most range in this case. */ | |
25109 | base_off = off_val_1; | |
25110 | ||
25111 | /* Adjust the base so that it is aligned with the addresses but still | |
25112 | optimal. */ | |
25113 | if (base_off % msize != off_val_1 % msize) | |
25114 | /* Fix the offset, bearing in mind we want to make it bigger not | |
25115 | smaller. */ | |
25116 | base_off += (((base_off % msize) - (off_val_1 % msize)) + msize) % msize; | |
25117 | else if (msize <= 4) | |
25118 | /* The negative range of LDP/STP is one larger than the positive range. */ | |
25119 | base_off += msize; | |
25120 | ||
25121 | /* Check if base offset is too big or too small. We can attempt to resolve | |
25122 | this issue by setting it to the maximum value and seeing if the offsets | |
25123 | still fit. */ | |
25124 | if (base_off >= 0x1000) | |
350013bc | 25125 | { |
d0b51297 JW |
25126 | base_off = 0x1000 - 1; |
25127 | /* We must still make sure that the base offset is aligned with respect | |
700d4cb0 | 25128 | to the address. But it may not be made any bigger. */ |
d0b51297 | 25129 | base_off -= (((base_off % msize) - (off_val_1 % msize)) + msize) % msize; |
350013bc BC |
25130 | } |
25131 | ||
d0b51297 JW |
25132 | /* Likewise for the case where the base is too small. */ |
25133 | if (base_off <= -0x1000) | |
350013bc | 25134 | { |
d0b51297 JW |
25135 | base_off = -0x1000 + 1; |
25136 | base_off += (((base_off % msize) - (off_val_1 % msize)) + msize) % msize; | |
350013bc BC |
25137 | } |
25138 | ||
d0b51297 JW |
25139 | /* Offset of the first STP/LDP. */ |
25140 | new_off_1 = off_val_1 - base_off; | |
25141 | ||
25142 | /* Offset of the second STP/LDP. */ | |
25143 | new_off_3 = off_val_3 - base_off; | |
350013bc | 25144 | |
d0b51297 JW |
25145 | /* The offsets must be within the range of the LDP/STP instructions. */ |
25146 | if (new_off_1 > stp_off_upper_limit || new_off_1 < stp_off_lower_limit | |
25147 | || new_off_3 > stp_off_upper_limit || new_off_3 < stp_off_lower_limit) | |
350013bc BC |
25148 | return false; |
25149 | ||
d0b51297 JW |
25150 | replace_equiv_address_nv (mem_1, plus_constant (Pmode, operands[8], |
25151 | new_off_1), true); | |
25152 | replace_equiv_address_nv (mem_2, plus_constant (Pmode, operands[8], | |
25153 | new_off_1 + msize), true); | |
25154 | replace_equiv_address_nv (mem_3, plus_constant (Pmode, operands[8], | |
25155 | new_off_3), true); | |
25156 | replace_equiv_address_nv (mem_4, plus_constant (Pmode, operands[8], | |
25157 | new_off_3 + msize), true); | |
25158 | ||
25159 | if (!aarch64_mem_pair_operand (mem_1, mode) | |
25160 | || !aarch64_mem_pair_operand (mem_3, mode)) | |
25161 | return false; | |
350013bc BC |
25162 | |
25163 | if (code == ZERO_EXTEND) | |
25164 | { | |
25165 | mem_1 = gen_rtx_ZERO_EXTEND (DImode, mem_1); | |
25166 | mem_2 = gen_rtx_ZERO_EXTEND (DImode, mem_2); | |
25167 | mem_3 = gen_rtx_ZERO_EXTEND (DImode, mem_3); | |
25168 | mem_4 = gen_rtx_ZERO_EXTEND (DImode, mem_4); | |
25169 | } | |
25170 | else if (code == SIGN_EXTEND) | |
25171 | { | |
25172 | mem_1 = gen_rtx_SIGN_EXTEND (DImode, mem_1); | |
25173 | mem_2 = gen_rtx_SIGN_EXTEND (DImode, mem_2); | |
25174 | mem_3 = gen_rtx_SIGN_EXTEND (DImode, mem_3); | |
25175 | mem_4 = gen_rtx_SIGN_EXTEND (DImode, mem_4); | |
25176 | } | |
25177 | ||
25178 | if (load) | |
25179 | { | |
d0b51297 | 25180 | operands[0] = temp_operands[0]; |
350013bc | 25181 | operands[1] = mem_1; |
d0b51297 | 25182 | operands[2] = temp_operands[2]; |
350013bc | 25183 | operands[3] = mem_2; |
d0b51297 | 25184 | operands[4] = temp_operands[4]; |
350013bc | 25185 | operands[5] = mem_3; |
d0b51297 | 25186 | operands[6] = temp_operands[6]; |
350013bc BC |
25187 | operands[7] = mem_4; |
25188 | } | |
25189 | else | |
25190 | { | |
25191 | operands[0] = mem_1; | |
d0b51297 | 25192 | operands[1] = temp_operands[1]; |
350013bc | 25193 | operands[2] = mem_2; |
d0b51297 | 25194 | operands[3] = temp_operands[3]; |
350013bc | 25195 | operands[4] = mem_3; |
d0b51297 | 25196 | operands[5] = temp_operands[5]; |
350013bc | 25197 | operands[6] = mem_4; |
d0b51297 | 25198 | operands[7] = temp_operands[7]; |
350013bc BC |
25199 | } |
25200 | ||
25201 | /* Emit adjusting instruction. */ | |
d0b51297 | 25202 | emit_insn (gen_rtx_SET (operands[8], plus_constant (DImode, base, base_off))); |
350013bc | 25203 | /* Emit ldp/stp instructions. */ |
f7df4a84 RS |
25204 | t1 = gen_rtx_SET (operands[0], operands[1]); |
25205 | t2 = gen_rtx_SET (operands[2], operands[3]); | |
350013bc | 25206 | emit_insn (gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2, t1, t2))); |
f7df4a84 RS |
25207 | t1 = gen_rtx_SET (operands[4], operands[5]); |
25208 | t2 = gen_rtx_SET (operands[6], operands[7]); | |
350013bc BC |
25209 | emit_insn (gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2, t1, t2))); |
25210 | return true; | |
25211 | } | |
25212 | ||
76a34e3f RS |
25213 | /* Implement TARGET_VECTORIZE_EMPTY_MASK_IS_EXPENSIVE. Assume for now that |
25214 | it isn't worth branching around empty masked ops (including masked | |
25215 | stores). */ | |
25216 | ||
25217 | static bool | |
25218 | aarch64_empty_mask_is_expensive (unsigned) | |
25219 | { | |
25220 | return false; | |
25221 | } | |
25222 | ||
1b1e81f8 JW |
25223 | /* Return 1 if pseudo register should be created and used to hold |
25224 | GOT address for PIC code. */ | |
25225 | ||
25226 | bool | |
25227 | aarch64_use_pseudo_pic_reg (void) | |
25228 | { | |
25229 | return aarch64_cmodel == AARCH64_CMODEL_SMALL_SPIC; | |
25230 | } | |
25231 | ||
7b841a12 JW |
25232 | /* Implement TARGET_UNSPEC_MAY_TRAP_P. */ |
25233 | ||
25234 | static int | |
25235 | aarch64_unspec_may_trap_p (const_rtx x, unsigned flags) | |
25236 | { | |
25237 | switch (XINT (x, 1)) | |
25238 | { | |
25239 | case UNSPEC_GOTSMALLPIC: | |
25240 | case UNSPEC_GOTSMALLPIC28K: | |
25241 | case UNSPEC_GOTTINYPIC: | |
25242 | return 0; | |
25243 | default: | |
25244 | break; | |
25245 | } | |
25246 | ||
25247 | return default_unspec_may_trap_p (x, flags); | |
25248 | } | |
25249 | ||
39252973 KT |
25250 | |
25251 | /* If X is a positive CONST_DOUBLE with a value that is a power of 2 | |
25252 | return the log2 of that value. Otherwise return -1. */ | |
25253 | ||
25254 | int | |
25255 | aarch64_fpconst_pow_of_2 (rtx x) | |
25256 | { | |
25257 | const REAL_VALUE_TYPE *r; | |
25258 | ||
25259 | if (!CONST_DOUBLE_P (x)) | |
25260 | return -1; | |
25261 | ||
25262 | r = CONST_DOUBLE_REAL_VALUE (x); | |
25263 | ||
25264 | if (REAL_VALUE_NEGATIVE (*r) | |
25265 | || REAL_VALUE_ISNAN (*r) | |
25266 | || REAL_VALUE_ISINF (*r) | |
25267 | || !real_isinteger (r, DFmode)) | |
25268 | return -1; | |
25269 | ||
25270 | return exact_log2 (real_to_integer (r)); | |
25271 | } | |
25272 | ||
188d0079 JH |
25273 | /* If X is a positive CONST_DOUBLE with a value that is the reciprocal of a |
25274 | power of 2 (i.e 1/2^n) return the number of float bits. e.g. for x==(1/2^n) | |
25275 | return n. Otherwise return -1. */ | |
25276 | ||
25277 | int | |
25278 | aarch64_fpconst_pow2_recip (rtx x) | |
25279 | { | |
25280 | REAL_VALUE_TYPE r0; | |
25281 | ||
25282 | if (!CONST_DOUBLE_P (x)) | |
25283 | return -1; | |
25284 | ||
25285 | r0 = *CONST_DOUBLE_REAL_VALUE (x); | |
25286 | if (exact_real_inverse (DFmode, &r0) | |
25287 | && !REAL_VALUE_NEGATIVE (r0)) | |
25288 | { | |
25289 | int ret = exact_log2 (real_to_integer (&r0)); | |
25290 | if (ret >= 1 && ret <= 32) | |
25291 | return ret; | |
25292 | } | |
25293 | return -1; | |
25294 | } | |
25295 | ||
39252973 KT |
25296 | /* If X is a vector of equal CONST_DOUBLE values and that value is |
25297 | Y, return the aarch64_fpconst_pow_of_2 of Y. Otherwise return -1. */ | |
25298 | ||
25299 | int | |
25300 | aarch64_vec_fpconst_pow_of_2 (rtx x) | |
25301 | { | |
6a70badb | 25302 | int nelts; |
568b9c0e | 25303 | if (!CONST_VECTOR_P (x) |
6a70badb | 25304 | || !CONST_VECTOR_NUNITS (x).is_constant (&nelts)) |
39252973 KT |
25305 | return -1; |
25306 | ||
25307 | if (GET_MODE_CLASS (GET_MODE (x)) != MODE_VECTOR_FLOAT) | |
25308 | return -1; | |
25309 | ||
25310 | int firstval = aarch64_fpconst_pow_of_2 (CONST_VECTOR_ELT (x, 0)); | |
25311 | if (firstval <= 0) | |
25312 | return -1; | |
25313 | ||
6a70badb | 25314 | for (int i = 1; i < nelts; i++) |
39252973 KT |
25315 | if (aarch64_fpconst_pow_of_2 (CONST_VECTOR_ELT (x, i)) != firstval) |
25316 | return -1; | |
25317 | ||
25318 | return firstval; | |
25319 | } | |
25320 | ||
11e554b3 JG |
25321 | /* Implement TARGET_PROMOTED_TYPE to promote 16-bit floating point types |
25322 | to float. | |
25323 | ||
25324 | __fp16 always promotes through this hook. | |
25325 | _Float16 may promote if TARGET_FLT_EVAL_METHOD is 16, but we do that | |
25326 | through the generic excess precision logic rather than here. */ | |
25327 | ||
c2ec330c AL |
25328 | static tree |
25329 | aarch64_promoted_type (const_tree t) | |
25330 | { | |
11e554b3 JG |
25331 | if (SCALAR_FLOAT_TYPE_P (t) |
25332 | && TYPE_MAIN_VARIANT (t) == aarch64_fp16_type_node) | |
c2ec330c | 25333 | return float_type_node; |
11e554b3 | 25334 | |
c2ec330c AL |
25335 | return NULL_TREE; |
25336 | } | |
ee62a5a6 RS |
25337 | |
25338 | /* Implement the TARGET_OPTAB_SUPPORTED_P hook. */ | |
25339 | ||
25340 | static bool | |
9acc9cbe | 25341 | aarch64_optab_supported_p (int op, machine_mode mode1, machine_mode, |
ee62a5a6 RS |
25342 | optimization_type opt_type) |
25343 | { | |
25344 | switch (op) | |
25345 | { | |
25346 | case rsqrt_optab: | |
9acc9cbe | 25347 | return opt_type == OPTIMIZE_FOR_SPEED && use_rsqrt_p (mode1); |
ee62a5a6 RS |
25348 | |
25349 | default: | |
25350 | return true; | |
25351 | } | |
25352 | } | |
25353 | ||
43cacb12 RS |
25354 | /* Implement the TARGET_DWARF_POLY_INDETERMINATE_VALUE hook. */ |
25355 | ||
25356 | static unsigned int | |
25357 | aarch64_dwarf_poly_indeterminate_value (unsigned int i, unsigned int *factor, | |
25358 | int *offset) | |
25359 | { | |
25360 | /* Polynomial invariant 1 == (VG / 2) - 1. */ | |
25361 | gcc_assert (i == 1); | |
25362 | *factor = 2; | |
25363 | *offset = 1; | |
25364 | return AARCH64_DWARF_VG; | |
25365 | } | |
25366 | ||
11e554b3 JG |
25367 | /* Implement TARGET_LIBGCC_FLOATING_POINT_MODE_SUPPORTED_P - return TRUE |
25368 | if MODE is HFmode, and punt to the generic implementation otherwise. */ | |
25369 | ||
25370 | static bool | |
7c5bd57a | 25371 | aarch64_libgcc_floating_mode_supported_p (scalar_float_mode mode) |
11e554b3 JG |
25372 | { |
25373 | return (mode == HFmode | |
25374 | ? true | |
25375 | : default_libgcc_floating_mode_supported_p (mode)); | |
25376 | } | |
25377 | ||
2e5f8203 JG |
25378 | /* Implement TARGET_SCALAR_MODE_SUPPORTED_P - return TRUE |
25379 | if MODE is HFmode, and punt to the generic implementation otherwise. */ | |
25380 | ||
25381 | static bool | |
18e2a8b8 | 25382 | aarch64_scalar_mode_supported_p (scalar_mode mode) |
2e5f8203 JG |
25383 | { |
25384 | return (mode == HFmode | |
25385 | ? true | |
25386 | : default_scalar_mode_supported_p (mode)); | |
25387 | } | |
25388 | ||
11e554b3 JG |
25389 | /* Set the value of FLT_EVAL_METHOD. |
25390 | ISO/IEC TS 18661-3 defines two values that we'd like to make use of: | |
25391 | ||
25392 | 0: evaluate all operations and constants, whose semantic type has at | |
25393 | most the range and precision of type float, to the range and | |
25394 | precision of float; evaluate all other operations and constants to | |
25395 | the range and precision of the semantic type; | |
25396 | ||
25397 | N, where _FloatN is a supported interchange floating type | |
25398 | evaluate all operations and constants, whose semantic type has at | |
25399 | most the range and precision of _FloatN type, to the range and | |
25400 | precision of the _FloatN type; evaluate all other operations and | |
25401 | constants to the range and precision of the semantic type; | |
25402 | ||
25403 | If we have the ARMv8.2-A extensions then we support _Float16 in native | |
25404 | precision, so we should set this to 16. Otherwise, we support the type, | |
25405 | but want to evaluate expressions in float precision, so set this to | |
25406 | 0. */ | |
25407 | ||
25408 | static enum flt_eval_method | |
25409 | aarch64_excess_precision (enum excess_precision_type type) | |
25410 | { | |
25411 | switch (type) | |
25412 | { | |
25413 | case EXCESS_PRECISION_TYPE_FAST: | |
25414 | case EXCESS_PRECISION_TYPE_STANDARD: | |
25415 | /* We can calculate either in 16-bit range and precision or | |
25416 | 32-bit range and precision. Make that decision based on whether | |
25417 | we have native support for the ARMv8.2-A 16-bit floating-point | |
25418 | instructions or not. */ | |
25419 | return (TARGET_FP_F16INST | |
25420 | ? FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16 | |
25421 | : FLT_EVAL_METHOD_PROMOTE_TO_FLOAT); | |
25422 | case EXCESS_PRECISION_TYPE_IMPLICIT: | |
f19a3270 | 25423 | case EXCESS_PRECISION_TYPE_FLOAT16: |
11e554b3 JG |
25424 | return FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16; |
25425 | default: | |
25426 | gcc_unreachable (); | |
25427 | } | |
25428 | return FLT_EVAL_METHOD_UNPREDICTABLE; | |
25429 | } | |
25430 | ||
b48d6421 KT |
25431 | /* Implement TARGET_SCHED_CAN_SPECULATE_INSN. Return true if INSN can be |
25432 | scheduled for speculative execution. Reject the long-running division | |
25433 | and square-root instructions. */ | |
25434 | ||
25435 | static bool | |
25436 | aarch64_sched_can_speculate_insn (rtx_insn *insn) | |
25437 | { | |
25438 | switch (get_attr_type (insn)) | |
25439 | { | |
25440 | case TYPE_SDIV: | |
25441 | case TYPE_UDIV: | |
25442 | case TYPE_FDIVS: | |
25443 | case TYPE_FDIVD: | |
25444 | case TYPE_FSQRTS: | |
25445 | case TYPE_FSQRTD: | |
25446 | case TYPE_NEON_FP_SQRT_S: | |
25447 | case TYPE_NEON_FP_SQRT_D: | |
25448 | case TYPE_NEON_FP_SQRT_S_Q: | |
25449 | case TYPE_NEON_FP_SQRT_D_Q: | |
25450 | case TYPE_NEON_FP_DIV_S: | |
25451 | case TYPE_NEON_FP_DIV_D: | |
25452 | case TYPE_NEON_FP_DIV_S_Q: | |
25453 | case TYPE_NEON_FP_DIV_D_Q: | |
25454 | return false; | |
25455 | default: | |
25456 | return true; | |
25457 | } | |
25458 | } | |
25459 | ||
43cacb12 RS |
25460 | /* Implement TARGET_COMPUTE_PRESSURE_CLASSES. */ |
25461 | ||
25462 | static int | |
25463 | aarch64_compute_pressure_classes (reg_class *classes) | |
25464 | { | |
25465 | int i = 0; | |
25466 | classes[i++] = GENERAL_REGS; | |
25467 | classes[i++] = FP_REGS; | |
25468 | /* PR_REGS isn't a useful pressure class because many predicate pseudo | |
25469 | registers need to go in PR_LO_REGS at some point during their | |
25470 | lifetime. Splitting it into two halves has the effect of making | |
25471 | all predicates count against PR_LO_REGS, so that we try whenever | |
25472 | possible to restrict the number of live predicates to 8. This | |
25473 | greatly reduces the amount of spilling in certain loops. */ | |
25474 | classes[i++] = PR_LO_REGS; | |
25475 | classes[i++] = PR_HI_REGS; | |
25476 | return i; | |
25477 | } | |
25478 | ||
25479 | /* Implement TARGET_CAN_CHANGE_MODE_CLASS. */ | |
25480 | ||
25481 | static bool | |
25482 | aarch64_can_change_mode_class (machine_mode from, | |
25483 | machine_mode to, reg_class_t) | |
25484 | { | |
76607e7e RS |
25485 | unsigned int from_flags = aarch64_classify_vector_mode (from); |
25486 | unsigned int to_flags = aarch64_classify_vector_mode (to); | |
25487 | ||
25488 | bool from_sve_p = (from_flags & VEC_ANY_SVE); | |
25489 | bool to_sve_p = (to_flags & VEC_ANY_SVE); | |
25490 | ||
25491 | bool from_partial_sve_p = from_sve_p && (from_flags & VEC_PARTIAL); | |
25492 | bool to_partial_sve_p = to_sve_p && (to_flags & VEC_PARTIAL); | |
25493 | ||
38e62001 RS |
25494 | bool from_pred_p = (from_flags & VEC_SVE_PRED); |
25495 | bool to_pred_p = (to_flags & VEC_SVE_PRED); | |
25496 | ||
66f206b8 JW |
25497 | bool from_full_advsimd_struct_p = (from_flags == (VEC_ADVSIMD | VEC_STRUCT)); |
25498 | bool to_partial_advsimd_struct_p = (to_flags == (VEC_ADVSIMD | VEC_STRUCT | |
25499 | | VEC_PARTIAL)); | |
25500 | ||
38e62001 RS |
25501 | /* Don't allow changes between predicate modes and other modes. |
25502 | Only predicate registers can hold predicate modes and only | |
25503 | non-predicate registers can hold non-predicate modes, so any | |
25504 | attempt to mix them would require a round trip through memory. */ | |
25505 | if (from_pred_p != to_pred_p) | |
25506 | return false; | |
25507 | ||
76607e7e RS |
25508 | /* Don't allow changes between partial SVE modes and other modes. |
25509 | The contents of partial SVE modes are distributed evenly across | |
25510 | the register, whereas GCC expects them to be clustered together. */ | |
25511 | if (from_partial_sve_p != to_partial_sve_p) | |
25512 | return false; | |
25513 | ||
25514 | /* Similarly reject changes between partial SVE modes that have | |
25515 | different patterns of significant and insignificant bits. */ | |
25516 | if (from_partial_sve_p | |
25517 | && (aarch64_sve_container_bits (from) != aarch64_sve_container_bits (to) | |
25518 | || GET_MODE_UNIT_SIZE (from) != GET_MODE_UNIT_SIZE (to))) | |
25519 | return false; | |
25520 | ||
66f206b8 JW |
25521 | /* Don't allow changes between partial and full Advanced SIMD structure |
25522 | modes. */ | |
25523 | if (from_full_advsimd_struct_p && to_partial_advsimd_struct_p) | |
25524 | return false; | |
25525 | ||
38e62001 RS |
25526 | if (maybe_ne (BITS_PER_SVE_VECTOR, 128u)) |
25527 | { | |
25528 | /* Don't allow changes between SVE modes and other modes that might | |
25529 | be bigger than 128 bits. In particular, OImode, CImode and XImode | |
25530 | divide into 128-bit quantities while SVE modes divide into | |
25531 | BITS_PER_SVE_VECTOR quantities. */ | |
25532 | if (from_sve_p && !to_sve_p && maybe_gt (GET_MODE_BITSIZE (to), 128)) | |
25533 | return false; | |
25534 | if (to_sve_p && !from_sve_p && maybe_gt (GET_MODE_BITSIZE (from), 128)) | |
25535 | return false; | |
25536 | } | |
25537 | ||
002092be RS |
25538 | if (BYTES_BIG_ENDIAN) |
25539 | { | |
002092be RS |
25540 | /* Don't allow changes between SVE data modes and non-SVE modes. |
25541 | See the comment at the head of aarch64-sve.md for details. */ | |
25542 | if (from_sve_p != to_sve_p) | |
25543 | return false; | |
25544 | ||
25545 | /* Don't allow changes in element size: lane 0 of the new vector | |
25546 | would not then be lane 0 of the old vector. See the comment | |
25547 | above aarch64_maybe_expand_sve_subreg_move for a more detailed | |
25548 | description. | |
25549 | ||
25550 | In the worst case, this forces a register to be spilled in | |
25551 | one mode and reloaded in the other, which handles the | |
25552 | endianness correctly. */ | |
25553 | if (from_sve_p && GET_MODE_UNIT_SIZE (from) != GET_MODE_UNIT_SIZE (to)) | |
25554 | return false; | |
25555 | } | |
43cacb12 RS |
25556 | return true; |
25557 | } | |
25558 | ||
5cce8171 RS |
25559 | /* Implement TARGET_EARLY_REMAT_MODES. */ |
25560 | ||
25561 | static void | |
25562 | aarch64_select_early_remat_modes (sbitmap modes) | |
25563 | { | |
25564 | /* SVE values are not normally live across a call, so it should be | |
25565 | worth doing early rematerialization even in VL-specific mode. */ | |
25566 | for (int i = 0; i < NUM_MACHINE_MODES; ++i) | |
5c38705d RS |
25567 | if (aarch64_sve_mode_p ((machine_mode) i)) |
25568 | bitmap_set_bit (modes, i); | |
5cce8171 RS |
25569 | } |
25570 | ||
c0111dc4 RE |
25571 | /* Override the default target speculation_safe_value. */ |
25572 | static rtx | |
25573 | aarch64_speculation_safe_value (machine_mode mode, | |
25574 | rtx result, rtx val, rtx failval) | |
25575 | { | |
25576 | /* Maybe we should warn if falling back to hard barriers. They are | |
25577 | likely to be noticably more expensive than the alternative below. */ | |
25578 | if (!aarch64_track_speculation) | |
25579 | return default_speculation_safe_value (mode, result, val, failval); | |
25580 | ||
25581 | if (!REG_P (val)) | |
25582 | val = copy_to_mode_reg (mode, val); | |
25583 | ||
25584 | if (!aarch64_reg_or_zero (failval, mode)) | |
25585 | failval = copy_to_mode_reg (mode, failval); | |
25586 | ||
21cebf90 | 25587 | emit_insn (gen_despeculate_copy (mode, result, val, failval)); |
c0111dc4 RE |
25588 | return result; |
25589 | } | |
25590 | ||
2d56d6ba KT |
25591 | /* Implement TARGET_ESTIMATED_POLY_VALUE. |
25592 | Look into the tuning structure for an estimate. | |
64432b68 KT |
25593 | KIND specifies the type of requested estimate: min, max or likely. |
25594 | For cores with a known SVE width all three estimates are the same. | |
25595 | For generic SVE tuning we want to distinguish the maximum estimate from | |
25596 | the minimum and likely ones. | |
25597 | The likely estimate is the same as the minimum in that case to give a | |
25598 | conservative behavior of auto-vectorizing with SVE when it is a win | |
25599 | even for 128-bit SVE. | |
25600 | When SVE width information is available VAL.coeffs[1] is multiplied by | |
25601 | the number of VQ chunks over the initial Advanced SIMD 128 bits. */ | |
2d56d6ba KT |
25602 | |
25603 | static HOST_WIDE_INT | |
64432b68 KT |
25604 | aarch64_estimated_poly_value (poly_int64 val, |
25605 | poly_value_estimate_kind kind | |
25606 | = POLY_VALUE_LIKELY) | |
2d56d6ba | 25607 | { |
fa3ca615 | 25608 | unsigned int width_source = aarch64_tune_params.sve_width; |
2d56d6ba | 25609 | |
64432b68 KT |
25610 | /* If there is no core-specific information then the minimum and likely |
25611 | values are based on 128-bit vectors and the maximum is based on | |
25612 | the architectural maximum of 2048 bits. */ | |
2d56d6ba | 25613 | if (width_source == SVE_SCALABLE) |
64432b68 KT |
25614 | switch (kind) |
25615 | { | |
25616 | case POLY_VALUE_MIN: | |
25617 | case POLY_VALUE_LIKELY: | |
25618 | return val.coeffs[0]; | |
25619 | case POLY_VALUE_MAX: | |
25620 | return val.coeffs[0] + val.coeffs[1] * 15; | |
25621 | } | |
2d56d6ba | 25622 | |
fa3ca615 RS |
25623 | /* Allow sve_width to be a bitmask of different VL, treating the lowest |
25624 | as likely. This could be made more general if future -mtune options | |
25625 | need it to be. */ | |
25626 | if (kind == POLY_VALUE_MAX) | |
25627 | width_source = 1 << floor_log2 (width_source); | |
25628 | else | |
25629 | width_source = least_bit_hwi (width_source); | |
25630 | ||
64432b68 | 25631 | /* If the core provides width information, use that. */ |
2d56d6ba KT |
25632 | HOST_WIDE_INT over_128 = width_source - 128; |
25633 | return val.coeffs[0] + val.coeffs[1] * over_128 / 128; | |
25634 | } | |
25635 | ||
d9186814 SE |
25636 | |
25637 | /* Return true for types that could be supported as SIMD return or | |
25638 | argument types. */ | |
25639 | ||
25640 | static bool | |
25641 | supported_simd_type (tree t) | |
25642 | { | |
25643 | if (SCALAR_FLOAT_TYPE_P (t) || INTEGRAL_TYPE_P (t) || POINTER_TYPE_P (t)) | |
25644 | { | |
25645 | HOST_WIDE_INT s = tree_to_shwi (TYPE_SIZE_UNIT (t)); | |
25646 | return s == 1 || s == 2 || s == 4 || s == 8; | |
25647 | } | |
25648 | return false; | |
25649 | } | |
25650 | ||
25651 | /* Return true for types that currently are supported as SIMD return | |
25652 | or argument types. */ | |
25653 | ||
25654 | static bool | |
25655 | currently_supported_simd_type (tree t, tree b) | |
25656 | { | |
25657 | if (COMPLEX_FLOAT_TYPE_P (t)) | |
25658 | return false; | |
25659 | ||
25660 | if (TYPE_SIZE (t) != TYPE_SIZE (b)) | |
25661 | return false; | |
25662 | ||
25663 | return supported_simd_type (t); | |
25664 | } | |
25665 | ||
25666 | /* Implement TARGET_SIMD_CLONE_COMPUTE_VECSIZE_AND_SIMDLEN. */ | |
25667 | ||
25668 | static int | |
25669 | aarch64_simd_clone_compute_vecsize_and_simdlen (struct cgraph_node *node, | |
25670 | struct cgraph_simd_clone *clonei, | |
25671 | tree base_type, int num) | |
25672 | { | |
39916cea | 25673 | tree t, ret_type; |
abe93733 YY |
25674 | unsigned int elt_bits, count; |
25675 | unsigned HOST_WIDE_INT const_simdlen; | |
25676 | poly_uint64 vec_bits; | |
d9186814 SE |
25677 | |
25678 | if (!TARGET_SIMD) | |
25679 | return 0; | |
25680 | ||
abe93733 YY |
25681 | /* For now, SVE simdclones won't produce illegal simdlen, So only check |
25682 | const simdlens here. */ | |
25683 | if (maybe_ne (clonei->simdlen, 0U) | |
25684 | && clonei->simdlen.is_constant (&const_simdlen) | |
25685 | && (const_simdlen < 2 | |
25686 | || const_simdlen > 1024 | |
25687 | || (const_simdlen & (const_simdlen - 1)) != 0)) | |
d9186814 SE |
25688 | { |
25689 | warning_at (DECL_SOURCE_LOCATION (node->decl), 0, | |
abe93733 | 25690 | "unsupported simdlen %wd", const_simdlen); |
d9186814 SE |
25691 | return 0; |
25692 | } | |
25693 | ||
25694 | ret_type = TREE_TYPE (TREE_TYPE (node->decl)); | |
25695 | if (TREE_CODE (ret_type) != VOID_TYPE | |
25696 | && !currently_supported_simd_type (ret_type, base_type)) | |
25697 | { | |
25698 | if (TYPE_SIZE (ret_type) != TYPE_SIZE (base_type)) | |
25699 | warning_at (DECL_SOURCE_LOCATION (node->decl), 0, | |
25700 | "GCC does not currently support mixed size types " | |
25701 | "for %<simd%> functions"); | |
25702 | else if (supported_simd_type (ret_type)) | |
25703 | warning_at (DECL_SOURCE_LOCATION (node->decl), 0, | |
25704 | "GCC does not currently support return type %qT " | |
25705 | "for %<simd%> functions", ret_type); | |
25706 | else | |
25707 | warning_at (DECL_SOURCE_LOCATION (node->decl), 0, | |
25708 | "unsupported return type %qT for %<simd%> functions", | |
25709 | ret_type); | |
25710 | return 0; | |
25711 | } | |
25712 | ||
fcefc59b JJ |
25713 | int i; |
25714 | tree type_arg_types = TYPE_ARG_TYPES (TREE_TYPE (node->decl)); | |
25715 | bool decl_arg_p = (node->definition || type_arg_types == NULL_TREE); | |
25716 | ||
25717 | for (t = (decl_arg_p ? DECL_ARGUMENTS (node->decl) : type_arg_types), i = 0; | |
25718 | t && t != void_list_node; t = TREE_CHAIN (t), i++) | |
d9186814 | 25719 | { |
fcefc59b | 25720 | tree arg_type = decl_arg_p ? TREE_TYPE (t) : TREE_VALUE (t); |
d9186814 | 25721 | |
fcefc59b JJ |
25722 | if (clonei->args[i].arg_type != SIMD_CLONE_ARG_TYPE_UNIFORM |
25723 | && !currently_supported_simd_type (arg_type, base_type)) | |
d9186814 SE |
25724 | { |
25725 | if (TYPE_SIZE (arg_type) != TYPE_SIZE (base_type)) | |
25726 | warning_at (DECL_SOURCE_LOCATION (node->decl), 0, | |
25727 | "GCC does not currently support mixed size types " | |
25728 | "for %<simd%> functions"); | |
25729 | else | |
25730 | warning_at (DECL_SOURCE_LOCATION (node->decl), 0, | |
25731 | "GCC does not currently support argument type %qT " | |
25732 | "for %<simd%> functions", arg_type); | |
25733 | return 0; | |
25734 | } | |
25735 | } | |
25736 | ||
25737 | clonei->vecsize_mangle = 'n'; | |
25738 | clonei->mask_mode = VOIDmode; | |
25739 | elt_bits = GET_MODE_BITSIZE (SCALAR_TYPE_MODE (base_type)); | |
abe93733 | 25740 | if (known_eq (clonei->simdlen, 0U)) |
d9186814 SE |
25741 | { |
25742 | count = 2; | |
25743 | vec_bits = (num == 0 ? 64 : 128); | |
abe93733 | 25744 | clonei->simdlen = exact_div (vec_bits, elt_bits); |
d9186814 SE |
25745 | } |
25746 | else | |
25747 | { | |
25748 | count = 1; | |
25749 | vec_bits = clonei->simdlen * elt_bits; | |
abe93733 YY |
25750 | /* For now, SVE simdclones won't produce illegal simdlen, So only check |
25751 | const simdlens here. */ | |
25752 | if (clonei->simdlen.is_constant (&const_simdlen) | |
25753 | && maybe_ne (vec_bits, 64U) && maybe_ne (vec_bits, 128U)) | |
d9186814 SE |
25754 | { |
25755 | warning_at (DECL_SOURCE_LOCATION (node->decl), 0, | |
abe93733 YY |
25756 | "GCC does not currently support simdlen %wd for type %qT", |
25757 | const_simdlen, base_type); | |
d9186814 SE |
25758 | return 0; |
25759 | } | |
25760 | } | |
25761 | clonei->vecsize_int = vec_bits; | |
25762 | clonei->vecsize_float = vec_bits; | |
25763 | return count; | |
25764 | } | |
25765 | ||
25766 | /* Implement TARGET_SIMD_CLONE_ADJUST. */ | |
25767 | ||
25768 | static void | |
25769 | aarch64_simd_clone_adjust (struct cgraph_node *node) | |
25770 | { | |
25771 | /* Add aarch64_vector_pcs target attribute to SIMD clones so they | |
25772 | use the correct ABI. */ | |
25773 | ||
25774 | tree t = TREE_TYPE (node->decl); | |
25775 | TYPE_ATTRIBUTES (t) = make_attribute ("aarch64_vector_pcs", "default", | |
25776 | TYPE_ATTRIBUTES (t)); | |
25777 | } | |
25778 | ||
25779 | /* Implement TARGET_SIMD_CLONE_USABLE. */ | |
25780 | ||
25781 | static int | |
25782 | aarch64_simd_clone_usable (struct cgraph_node *node) | |
25783 | { | |
25784 | switch (node->simdclone->vecsize_mangle) | |
25785 | { | |
25786 | case 'n': | |
25787 | if (!TARGET_SIMD) | |
25788 | return -1; | |
25789 | return 0; | |
25790 | default: | |
25791 | gcc_unreachable (); | |
25792 | } | |
25793 | } | |
25794 | ||
497f281c SE |
25795 | /* Implement TARGET_COMP_TYPE_ATTRIBUTES */ |
25796 | ||
25797 | static int | |
25798 | aarch64_comp_type_attributes (const_tree type1, const_tree type2) | |
25799 | { | |
31427b97 RS |
25800 | auto check_attr = [&](const char *name) { |
25801 | tree attr1 = lookup_attribute (name, TYPE_ATTRIBUTES (type1)); | |
25802 | tree attr2 = lookup_attribute (name, TYPE_ATTRIBUTES (type2)); | |
25803 | if (!attr1 && !attr2) | |
25804 | return true; | |
25805 | ||
25806 | return attr1 && attr2 && attribute_value_equal (attr1, attr2); | |
25807 | }; | |
25808 | ||
25809 | if (!check_attr ("aarch64_vector_pcs")) | |
25810 | return 0; | |
25811 | if (!check_attr ("Advanced SIMD type")) | |
497f281c | 25812 | return 0; |
4cea5b8c RS |
25813 | if (!check_attr ("SVE type")) |
25814 | return 0; | |
25815 | if (!check_attr ("SVE sizeless type")) | |
25816 | return 0; | |
497f281c SE |
25817 | return 1; |
25818 | } | |
25819 | ||
3bac1e20 SE |
25820 | /* Implement TARGET_GET_MULTILIB_ABI_NAME */ |
25821 | ||
25822 | static const char * | |
25823 | aarch64_get_multilib_abi_name (void) | |
25824 | { | |
25825 | if (TARGET_BIG_END) | |
25826 | return TARGET_ILP32 ? "aarch64_be_ilp32" : "aarch64_be"; | |
25827 | return TARGET_ILP32 ? "aarch64_ilp32" : "aarch64"; | |
25828 | } | |
25829 | ||
e76c8e56 JJ |
25830 | /* Implement TARGET_STACK_PROTECT_GUARD. In case of a |
25831 | global variable based guard use the default else | |
25832 | return a null tree. */ | |
25833 | static tree | |
25834 | aarch64_stack_protect_guard (void) | |
25835 | { | |
25836 | if (aarch64_stack_protector_guard == SSP_GLOBAL) | |
25837 | return default_stack_protect_guard (); | |
25838 | ||
25839 | return NULL_TREE; | |
25840 | } | |
25841 | ||
98698967 SMW |
25842 | /* Return the diagnostic message string if conversion from FROMTYPE to |
25843 | TOTYPE is not allowed, NULL otherwise. */ | |
25844 | ||
25845 | static const char * | |
25846 | aarch64_invalid_conversion (const_tree fromtype, const_tree totype) | |
25847 | { | |
25848 | if (element_mode (fromtype) != element_mode (totype)) | |
25849 | { | |
25850 | /* Do no allow conversions to/from BFmode scalar types. */ | |
25851 | if (TYPE_MODE (fromtype) == BFmode) | |
25852 | return N_("invalid conversion from type %<bfloat16_t%>"); | |
25853 | if (TYPE_MODE (totype) == BFmode) | |
25854 | return N_("invalid conversion to type %<bfloat16_t%>"); | |
25855 | } | |
25856 | ||
25857 | /* Conversion allowed. */ | |
25858 | return NULL; | |
25859 | } | |
25860 | ||
25861 | /* Return the diagnostic message string if the unary operation OP is | |
25862 | not permitted on TYPE, NULL otherwise. */ | |
25863 | ||
25864 | static const char * | |
25865 | aarch64_invalid_unary_op (int op, const_tree type) | |
25866 | { | |
25867 | /* Reject all single-operand operations on BFmode except for &. */ | |
25868 | if (element_mode (type) == BFmode && op != ADDR_EXPR) | |
25869 | return N_("operation not permitted on type %<bfloat16_t%>"); | |
25870 | ||
25871 | /* Operation allowed. */ | |
25872 | return NULL; | |
25873 | } | |
25874 | ||
25875 | /* Return the diagnostic message string if the binary operation OP is | |
25876 | not permitted on TYPE1 and TYPE2, NULL otherwise. */ | |
25877 | ||
25878 | static const char * | |
25879 | aarch64_invalid_binary_op (int op ATTRIBUTE_UNUSED, const_tree type1, | |
25880 | const_tree type2) | |
25881 | { | |
25882 | /* Reject all 2-operand operations on BFmode. */ | |
25883 | if (element_mode (type1) == BFmode | |
25884 | || element_mode (type2) == BFmode) | |
25885 | return N_("operation not permitted on type %<bfloat16_t%>"); | |
25886 | ||
38e62001 RS |
25887 | if (VECTOR_TYPE_P (type1) |
25888 | && VECTOR_TYPE_P (type2) | |
25889 | && !TYPE_INDIVISIBLE_P (type1) | |
25890 | && !TYPE_INDIVISIBLE_P (type2) | |
25891 | && (aarch64_sve::builtin_type_p (type1) | |
25892 | != aarch64_sve::builtin_type_p (type2))) | |
25893 | return N_("cannot combine GNU and SVE vectors in a binary operation"); | |
25894 | ||
98698967 SMW |
25895 | /* Operation allowed. */ |
25896 | return NULL; | |
25897 | } | |
25898 | ||
3bd87832 MM |
25899 | /* Implement TARGET_MEMTAG_CAN_TAG_ADDRESSES. Here we tell the rest of the |
25900 | compiler that we automatically ignore the top byte of our pointers, which | |
25901 | allows using -fsanitize=hwaddress. */ | |
25902 | bool | |
25903 | aarch64_can_tag_addresses () | |
25904 | { | |
25905 | return !TARGET_ILP32; | |
25906 | } | |
25907 | ||
32efff9f SD |
25908 | /* Implement TARGET_ASM_FILE_END for AArch64. This adds the AArch64 GNU NOTE |
25909 | section at the end if needed. */ | |
25910 | #define GNU_PROPERTY_AARCH64_FEATURE_1_AND 0xc0000000 | |
25911 | #define GNU_PROPERTY_AARCH64_FEATURE_1_BTI (1U << 0) | |
25912 | #define GNU_PROPERTY_AARCH64_FEATURE_1_PAC (1U << 1) | |
25913 | void | |
25914 | aarch64_file_end_indicate_exec_stack () | |
25915 | { | |
25916 | file_end_indicate_exec_stack (); | |
25917 | ||
25918 | unsigned feature_1_and = 0; | |
25919 | if (aarch64_bti_enabled ()) | |
25920 | feature_1_and |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI; | |
25921 | ||
25922 | if (aarch64_ra_sign_scope != AARCH64_FUNCTION_NONE) | |
25923 | feature_1_and |= GNU_PROPERTY_AARCH64_FEATURE_1_PAC; | |
25924 | ||
25925 | if (feature_1_and) | |
25926 | { | |
25927 | /* Generate .note.gnu.property section. */ | |
25928 | switch_to_section (get_section (".note.gnu.property", | |
25929 | SECTION_NOTYPE, NULL)); | |
25930 | ||
25931 | /* PT_NOTE header: namesz, descsz, type. | |
25932 | namesz = 4 ("GNU\0") | |
25933 | descsz = 16 (Size of the program property array) | |
25934 | [(12 + padding) * Number of array elements] | |
25935 | type = 5 (NT_GNU_PROPERTY_TYPE_0). */ | |
25936 | assemble_align (POINTER_SIZE); | |
25937 | assemble_integer (GEN_INT (4), 4, 32, 1); | |
25938 | assemble_integer (GEN_INT (ROUND_UP (12, POINTER_BYTES)), 4, 32, 1); | |
25939 | assemble_integer (GEN_INT (5), 4, 32, 1); | |
25940 | ||
25941 | /* PT_NOTE name. */ | |
25942 | assemble_string ("GNU", 4); | |
25943 | ||
25944 | /* PT_NOTE contents for NT_GNU_PROPERTY_TYPE_0: | |
25945 | type = GNU_PROPERTY_AARCH64_FEATURE_1_AND | |
25946 | datasz = 4 | |
25947 | data = feature_1_and. */ | |
25948 | assemble_integer (GEN_INT (GNU_PROPERTY_AARCH64_FEATURE_1_AND), 4, 32, 1); | |
25949 | assemble_integer (GEN_INT (4), 4, 32, 1); | |
25950 | assemble_integer (GEN_INT (feature_1_and), 4, 32, 1); | |
25951 | ||
25952 | /* Pad the size of the note to the required alignment. */ | |
25953 | assemble_align (POINTER_SIZE); | |
25954 | } | |
25955 | } | |
25956 | #undef GNU_PROPERTY_AARCH64_FEATURE_1_PAC | |
25957 | #undef GNU_PROPERTY_AARCH64_FEATURE_1_BTI | |
25958 | #undef GNU_PROPERTY_AARCH64_FEATURE_1_AND | |
e76c8e56 | 25959 | |
be178ecd MM |
25960 | /* Helper function for straight line speculation. |
25961 | Return what barrier should be emitted for straight line speculation | |
25962 | mitigation. | |
25963 | When not mitigating against straight line speculation this function returns | |
25964 | an empty string. | |
25965 | When mitigating against straight line speculation, use: | |
25966 | * SB when the v8.5-A SB extension is enabled. | |
25967 | * DSB+ISB otherwise. */ | |
25968 | const char * | |
25969 | aarch64_sls_barrier (int mitigation_required) | |
25970 | { | |
25971 | return mitigation_required | |
25972 | ? (TARGET_SB ? "sb" : "dsb\tsy\n\tisb") | |
25973 | : ""; | |
25974 | } | |
25975 | ||
96b7f495 MM |
25976 | static GTY (()) tree aarch64_sls_shared_thunks[30]; |
25977 | static GTY (()) bool aarch64_sls_shared_thunks_needed = false; | |
25978 | const char *indirect_symbol_names[30] = { | |
25979 | "__call_indirect_x0", | |
25980 | "__call_indirect_x1", | |
25981 | "__call_indirect_x2", | |
25982 | "__call_indirect_x3", | |
25983 | "__call_indirect_x4", | |
25984 | "__call_indirect_x5", | |
25985 | "__call_indirect_x6", | |
25986 | "__call_indirect_x7", | |
25987 | "__call_indirect_x8", | |
25988 | "__call_indirect_x9", | |
25989 | "__call_indirect_x10", | |
25990 | "__call_indirect_x11", | |
25991 | "__call_indirect_x12", | |
25992 | "__call_indirect_x13", | |
25993 | "__call_indirect_x14", | |
25994 | "__call_indirect_x15", | |
25995 | "", /* "__call_indirect_x16", */ | |
25996 | "", /* "__call_indirect_x17", */ | |
25997 | "__call_indirect_x18", | |
25998 | "__call_indirect_x19", | |
25999 | "__call_indirect_x20", | |
26000 | "__call_indirect_x21", | |
26001 | "__call_indirect_x22", | |
26002 | "__call_indirect_x23", | |
26003 | "__call_indirect_x24", | |
26004 | "__call_indirect_x25", | |
26005 | "__call_indirect_x26", | |
26006 | "__call_indirect_x27", | |
26007 | "__call_indirect_x28", | |
26008 | "__call_indirect_x29", | |
26009 | }; | |
26010 | ||
26011 | /* Function to create a BLR thunk. This thunk is used to mitigate straight | |
26012 | line speculation. Instead of a simple BLR that can be speculated past, | |
26013 | we emit a BL to this thunk, and this thunk contains a BR to the relevant | |
26014 | register. These thunks have the relevant speculation barries put after | |
26015 | their indirect branch so that speculation is blocked. | |
26016 | ||
26017 | We use such a thunk so the speculation barriers are kept off the | |
26018 | architecturally executed path in order to reduce the performance overhead. | |
26019 | ||
26020 | When optimizing for size we use stubs shared by the linked object. | |
26021 | When optimizing for performance we emit stubs for each function in the hope | |
26022 | that the branch predictor can better train on jumps specific for a given | |
26023 | function. */ | |
26024 | rtx | |
26025 | aarch64_sls_create_blr_label (int regnum) | |
26026 | { | |
26027 | gcc_assert (STUB_REGNUM_P (regnum)); | |
26028 | if (optimize_function_for_size_p (cfun)) | |
26029 | { | |
26030 | /* For the thunks shared between different functions in this compilation | |
26031 | unit we use a named symbol -- this is just for users to more easily | |
26032 | understand the generated assembly. */ | |
26033 | aarch64_sls_shared_thunks_needed = true; | |
26034 | const char *thunk_name = indirect_symbol_names[regnum]; | |
26035 | if (aarch64_sls_shared_thunks[regnum] == NULL) | |
26036 | { | |
26037 | /* Build a decl representing this function stub and record it for | |
26038 | later. We build a decl here so we can use the GCC machinery for | |
26039 | handling sections automatically (through `get_named_section` and | |
26040 | `make_decl_one_only`). That saves us a lot of trouble handling | |
26041 | the specifics of different output file formats. */ | |
26042 | tree decl = build_decl (BUILTINS_LOCATION, FUNCTION_DECL, | |
26043 | get_identifier (thunk_name), | |
26044 | build_function_type_list (void_type_node, | |
26045 | NULL_TREE)); | |
26046 | DECL_RESULT (decl) = build_decl (BUILTINS_LOCATION, RESULT_DECL, | |
26047 | NULL_TREE, void_type_node); | |
26048 | TREE_PUBLIC (decl) = 1; | |
26049 | TREE_STATIC (decl) = 1; | |
26050 | DECL_IGNORED_P (decl) = 1; | |
26051 | DECL_ARTIFICIAL (decl) = 1; | |
26052 | make_decl_one_only (decl, DECL_ASSEMBLER_NAME (decl)); | |
26053 | resolve_unique_section (decl, 0, false); | |
26054 | aarch64_sls_shared_thunks[regnum] = decl; | |
26055 | } | |
26056 | ||
26057 | return gen_rtx_SYMBOL_REF (Pmode, thunk_name); | |
26058 | } | |
26059 | ||
26060 | if (cfun->machine->call_via[regnum] == NULL) | |
26061 | cfun->machine->call_via[regnum] | |
26062 | = gen_rtx_LABEL_REF (Pmode, gen_label_rtx ()); | |
26063 | return cfun->machine->call_via[regnum]; | |
26064 | } | |
26065 | ||
26066 | /* Helper function for aarch64_sls_emit_blr_function_thunks and | |
26067 | aarch64_sls_emit_shared_blr_thunks below. */ | |
26068 | static void | |
26069 | aarch64_sls_emit_function_stub (FILE *out_file, int regnum) | |
26070 | { | |
26071 | /* Save in x16 and branch to that function so this transformation does | |
26072 | not prevent jumping to `BTI c` instructions. */ | |
26073 | asm_fprintf (out_file, "\tmov\tx16, x%d\n", regnum); | |
26074 | asm_fprintf (out_file, "\tbr\tx16\n"); | |
26075 | } | |
26076 | ||
26077 | /* Emit all BLR stubs for this particular function. | |
26078 | Here we emit all the BLR stubs needed for the current function. Since we | |
26079 | emit these stubs in a consecutive block we know there will be no speculation | |
26080 | gadgets between each stub, and hence we only emit a speculation barrier at | |
26081 | the end of the stub sequences. | |
26082 | ||
26083 | This is called in the TARGET_ASM_FUNCTION_EPILOGUE hook. */ | |
26084 | void | |
26085 | aarch64_sls_emit_blr_function_thunks (FILE *out_file) | |
26086 | { | |
26087 | if (! aarch64_harden_sls_blr_p ()) | |
26088 | return; | |
26089 | ||
26090 | bool any_functions_emitted = false; | |
26091 | /* We must save and restore the current function section since this assembly | |
26092 | is emitted at the end of the function. This means it can be emitted *just | |
26093 | after* the cold section of a function. That cold part would be emitted in | |
26094 | a different section. That switch would trigger a `.cfi_endproc` directive | |
26095 | to be emitted in the original section and a `.cfi_startproc` directive to | |
26096 | be emitted in the new section. Switching to the original section without | |
26097 | restoring would mean that the `.cfi_endproc` emitted as a function ends | |
26098 | would happen in a different section -- leaving an unmatched | |
26099 | `.cfi_startproc` in the cold text section and an unmatched `.cfi_endproc` | |
26100 | in the standard text section. */ | |
26101 | section *save_text_section = in_section; | |
26102 | switch_to_section (function_section (current_function_decl)); | |
26103 | for (int regnum = 0; regnum < 30; ++regnum) | |
26104 | { | |
26105 | rtx specu_label = cfun->machine->call_via[regnum]; | |
26106 | if (specu_label == NULL) | |
26107 | continue; | |
26108 | ||
26109 | targetm.asm_out.print_operand (out_file, specu_label, 0); | |
26110 | asm_fprintf (out_file, ":\n"); | |
26111 | aarch64_sls_emit_function_stub (out_file, regnum); | |
26112 | any_functions_emitted = true; | |
26113 | } | |
26114 | if (any_functions_emitted) | |
26115 | /* Can use the SB if needs be here, since this stub will only be used | |
26116 | by the current function, and hence for the current target. */ | |
26117 | asm_fprintf (out_file, "\t%s\n", aarch64_sls_barrier (true)); | |
26118 | switch_to_section (save_text_section); | |
26119 | } | |
26120 | ||
26121 | /* Emit shared BLR stubs for the current compilation unit. | |
26122 | Over the course of compiling this unit we may have converted some BLR | |
26123 | instructions to a BL to a shared stub function. This is where we emit those | |
26124 | stub functions. | |
26125 | This function is for the stubs shared between different functions in this | |
26126 | compilation unit. We share when optimizing for size instead of speed. | |
26127 | ||
26128 | This function is called through the TARGET_ASM_FILE_END hook. */ | |
26129 | void | |
26130 | aarch64_sls_emit_shared_blr_thunks (FILE *out_file) | |
26131 | { | |
26132 | if (! aarch64_sls_shared_thunks_needed) | |
26133 | return; | |
26134 | ||
26135 | for (int regnum = 0; regnum < 30; ++regnum) | |
26136 | { | |
26137 | tree decl = aarch64_sls_shared_thunks[regnum]; | |
26138 | if (!decl) | |
26139 | continue; | |
26140 | ||
26141 | const char *name = indirect_symbol_names[regnum]; | |
26142 | switch_to_section (get_named_section (decl, NULL, 0)); | |
26143 | ASM_OUTPUT_ALIGN (out_file, 2); | |
26144 | targetm.asm_out.globalize_label (out_file, name); | |
26145 | /* Only emits if the compiler is configured for an assembler that can | |
26146 | handle visibility directives. */ | |
26147 | targetm.asm_out.assemble_visibility (decl, VISIBILITY_HIDDEN); | |
26148 | ASM_OUTPUT_TYPE_DIRECTIVE (out_file, name, "function"); | |
26149 | ASM_OUTPUT_LABEL (out_file, name); | |
26150 | aarch64_sls_emit_function_stub (out_file, regnum); | |
26151 | /* Use the most conservative target to ensure it can always be used by any | |
26152 | function in the translation unit. */ | |
26153 | asm_fprintf (out_file, "\tdsb\tsy\n\tisb\n"); | |
26154 | ASM_DECLARE_FUNCTION_SIZE (out_file, name, decl); | |
26155 | } | |
26156 | } | |
26157 | ||
26158 | /* Implement TARGET_ASM_FILE_END. */ | |
26159 | void | |
26160 | aarch64_asm_file_end () | |
26161 | { | |
26162 | aarch64_sls_emit_shared_blr_thunks (asm_out_file); | |
26163 | /* Since this function will be called for the ASM_FILE_END hook, we ensure | |
26164 | that what would be called otherwise (e.g. `file_end_indicate_exec_stack` | |
26165 | for FreeBSD) still gets called. */ | |
26166 | #ifdef TARGET_ASM_FILE_END | |
26167 | TARGET_ASM_FILE_END (); | |
26168 | #endif | |
26169 | } | |
26170 | ||
26171 | const char * | |
26172 | aarch64_indirect_call_asm (rtx addr) | |
26173 | { | |
26174 | gcc_assert (REG_P (addr)); | |
26175 | if (aarch64_harden_sls_blr_p ()) | |
26176 | { | |
26177 | rtx stub_label = aarch64_sls_create_blr_label (REGNO (addr)); | |
26178 | output_asm_insn ("bl\t%0", &stub_label); | |
26179 | } | |
26180 | else | |
26181 | output_asm_insn ("blr\t%0", &addr); | |
26182 | return ""; | |
26183 | } | |
26184 | ||
51b86113 DM |
26185 | /* Target-specific selftests. */ |
26186 | ||
26187 | #if CHECKING_P | |
26188 | ||
26189 | namespace selftest { | |
26190 | ||
26191 | /* Selftest for the RTL loader. | |
26192 | Verify that the RTL loader copes with a dump from | |
26193 | print_rtx_function. This is essentially just a test that class | |
26194 | function_reader can handle a real dump, but it also verifies | |
26195 | that lookup_reg_by_dump_name correctly handles hard regs. | |
26196 | The presence of hard reg names in the dump means that the test is | |
26197 | target-specific, hence it is in this file. */ | |
26198 | ||
26199 | static void | |
26200 | aarch64_test_loading_full_dump () | |
26201 | { | |
26202 | rtl_dump_test t (SELFTEST_LOCATION, locate_file ("aarch64/times-two.rtl")); | |
26203 | ||
26204 | ASSERT_STREQ ("times_two", IDENTIFIER_POINTER (DECL_NAME (cfun->decl))); | |
26205 | ||
26206 | rtx_insn *insn_1 = get_insn_by_uid (1); | |
26207 | ASSERT_EQ (NOTE, GET_CODE (insn_1)); | |
26208 | ||
26209 | rtx_insn *insn_15 = get_insn_by_uid (15); | |
26210 | ASSERT_EQ (INSN, GET_CODE (insn_15)); | |
26211 | ASSERT_EQ (USE, GET_CODE (PATTERN (insn_15))); | |
26212 | ||
26213 | /* Verify crtl->return_rtx. */ | |
26214 | ASSERT_EQ (REG, GET_CODE (crtl->return_rtx)); | |
26215 | ASSERT_EQ (0, REGNO (crtl->return_rtx)); | |
26216 | ASSERT_EQ (SImode, GET_MODE (crtl->return_rtx)); | |
26217 | } | |
26218 | ||
83d796d3 RS |
26219 | /* Test the fractional_cost class. */ |
26220 | ||
26221 | static void | |
26222 | aarch64_test_fractional_cost () | |
26223 | { | |
26224 | using cf = fractional_cost; | |
26225 | ||
26226 | ASSERT_EQ (cf (0, 20), 0); | |
26227 | ||
26228 | ASSERT_EQ (cf (4, 2), 2); | |
26229 | ASSERT_EQ (3, cf (9, 3)); | |
26230 | ||
26231 | ASSERT_NE (cf (5, 2), 2); | |
26232 | ASSERT_NE (3, cf (8, 3)); | |
26233 | ||
26234 | ASSERT_EQ (cf (7, 11) + cf (15, 11), 2); | |
26235 | ASSERT_EQ (cf (2, 3) + cf (3, 5), cf (19, 15)); | |
26236 | ASSERT_EQ (cf (2, 3) + cf (1, 6) + cf (1, 6), 1); | |
26237 | ||
26238 | ASSERT_EQ (cf (14, 15) - cf (4, 15), cf (2, 3)); | |
26239 | ASSERT_EQ (cf (1, 4) - cf (1, 2), 0); | |
26240 | ASSERT_EQ (cf (3, 5) - cf (1, 10), cf (1, 2)); | |
26241 | ASSERT_EQ (cf (11, 3) - 3, cf (2, 3)); | |
26242 | ASSERT_EQ (3 - cf (7, 3), cf (2, 3)); | |
26243 | ASSERT_EQ (3 - cf (10, 3), 0); | |
26244 | ||
26245 | ASSERT_EQ (cf (2, 3) * 5, cf (10, 3)); | |
26246 | ASSERT_EQ (14 * cf (11, 21), cf (22, 3)); | |
26247 | ||
26248 | ASSERT_TRUE (cf (4, 15) < cf (5, 15)); | |
26249 | ASSERT_FALSE (cf (5, 15) < cf (5, 15)); | |
26250 | ASSERT_FALSE (cf (6, 15) < cf (5, 15)); | |
26251 | ASSERT_TRUE (cf (1, 3) < cf (2, 5)); | |
26252 | ASSERT_TRUE (cf (1, 12) < cf (1, 6)); | |
26253 | ASSERT_FALSE (cf (5, 3) < cf (5, 3)); | |
26254 | ASSERT_TRUE (cf (239, 240) < 1); | |
26255 | ASSERT_FALSE (cf (240, 240) < 1); | |
26256 | ASSERT_FALSE (cf (241, 240) < 1); | |
26257 | ASSERT_FALSE (2 < cf (207, 104)); | |
26258 | ASSERT_FALSE (2 < cf (208, 104)); | |
26259 | ASSERT_TRUE (2 < cf (209, 104)); | |
26260 | ||
26261 | ASSERT_TRUE (cf (4, 15) < cf (5, 15)); | |
26262 | ASSERT_FALSE (cf (5, 15) < cf (5, 15)); | |
26263 | ASSERT_FALSE (cf (6, 15) < cf (5, 15)); | |
26264 | ASSERT_TRUE (cf (1, 3) < cf (2, 5)); | |
26265 | ASSERT_TRUE (cf (1, 12) < cf (1, 6)); | |
26266 | ASSERT_FALSE (cf (5, 3) < cf (5, 3)); | |
26267 | ASSERT_TRUE (cf (239, 240) < 1); | |
26268 | ASSERT_FALSE (cf (240, 240) < 1); | |
26269 | ASSERT_FALSE (cf (241, 240) < 1); | |
26270 | ASSERT_FALSE (2 < cf (207, 104)); | |
26271 | ASSERT_FALSE (2 < cf (208, 104)); | |
26272 | ASSERT_TRUE (2 < cf (209, 104)); | |
26273 | ||
26274 | ASSERT_FALSE (cf (4, 15) >= cf (5, 15)); | |
26275 | ASSERT_TRUE (cf (5, 15) >= cf (5, 15)); | |
26276 | ASSERT_TRUE (cf (6, 15) >= cf (5, 15)); | |
26277 | ASSERT_FALSE (cf (1, 3) >= cf (2, 5)); | |
26278 | ASSERT_FALSE (cf (1, 12) >= cf (1, 6)); | |
26279 | ASSERT_TRUE (cf (5, 3) >= cf (5, 3)); | |
26280 | ASSERT_FALSE (cf (239, 240) >= 1); | |
26281 | ASSERT_TRUE (cf (240, 240) >= 1); | |
26282 | ASSERT_TRUE (cf (241, 240) >= 1); | |
26283 | ASSERT_TRUE (2 >= cf (207, 104)); | |
26284 | ASSERT_TRUE (2 >= cf (208, 104)); | |
26285 | ASSERT_FALSE (2 >= cf (209, 104)); | |
26286 | ||
26287 | ASSERT_FALSE (cf (4, 15) > cf (5, 15)); | |
26288 | ASSERT_FALSE (cf (5, 15) > cf (5, 15)); | |
26289 | ASSERT_TRUE (cf (6, 15) > cf (5, 15)); | |
26290 | ASSERT_FALSE (cf (1, 3) > cf (2, 5)); | |
26291 | ASSERT_FALSE (cf (1, 12) > cf (1, 6)); | |
26292 | ASSERT_FALSE (cf (5, 3) > cf (5, 3)); | |
26293 | ASSERT_FALSE (cf (239, 240) > 1); | |
26294 | ASSERT_FALSE (cf (240, 240) > 1); | |
26295 | ASSERT_TRUE (cf (241, 240) > 1); | |
26296 | ASSERT_TRUE (2 > cf (207, 104)); | |
26297 | ASSERT_FALSE (2 > cf (208, 104)); | |
26298 | ASSERT_FALSE (2 > cf (209, 104)); | |
26299 | ||
26300 | ASSERT_EQ (cf (1, 2).ceil (), 1); | |
26301 | ASSERT_EQ (cf (11, 7).ceil (), 2); | |
26302 | ASSERT_EQ (cf (20, 1).ceil (), 20); | |
26303 | ASSERT_EQ ((cf (0xfffffffd) + 1).ceil (), 0xfffffffe); | |
26304 | ASSERT_EQ ((cf (0xfffffffd) + 2).ceil (), 0xffffffff); | |
26305 | ASSERT_EQ ((cf (0xfffffffd) + 3).ceil (), 0xffffffff); | |
26306 | ASSERT_EQ ((cf (0x7fffffff) * 2).ceil (), 0xfffffffe); | |
26307 | ASSERT_EQ ((cf (0x80000000) * 2).ceil (), 0xffffffff); | |
26308 | ||
26309 | ASSERT_EQ (cf (1, 2).as_double (), 0.5); | |
26310 | } | |
26311 | ||
51b86113 DM |
26312 | /* Run all target-specific selftests. */ |
26313 | ||
26314 | static void | |
26315 | aarch64_run_selftests (void) | |
26316 | { | |
26317 | aarch64_test_loading_full_dump (); | |
83d796d3 | 26318 | aarch64_test_fractional_cost (); |
51b86113 DM |
26319 | } |
26320 | ||
26321 | } // namespace selftest | |
26322 | ||
26323 | #endif /* #if CHECKING_P */ | |
26324 | ||
cd0b2d36 RR |
26325 | #undef TARGET_STACK_PROTECT_GUARD |
26326 | #define TARGET_STACK_PROTECT_GUARD aarch64_stack_protect_guard | |
26327 | ||
43e9d192 IB |
26328 | #undef TARGET_ADDRESS_COST |
26329 | #define TARGET_ADDRESS_COST aarch64_address_cost | |
26330 | ||
26331 | /* This hook will determines whether unnamed bitfields affect the alignment | |
26332 | of the containing structure. The hook returns true if the structure | |
26333 | should inherit the alignment requirements of an unnamed bitfield's | |
26334 | type. */ | |
26335 | #undef TARGET_ALIGN_ANON_BITFIELD | |
26336 | #define TARGET_ALIGN_ANON_BITFIELD hook_bool_void_true | |
26337 | ||
26338 | #undef TARGET_ASM_ALIGNED_DI_OP | |
26339 | #define TARGET_ASM_ALIGNED_DI_OP "\t.xword\t" | |
26340 | ||
26341 | #undef TARGET_ASM_ALIGNED_HI_OP | |
26342 | #define TARGET_ASM_ALIGNED_HI_OP "\t.hword\t" | |
26343 | ||
26344 | #undef TARGET_ASM_ALIGNED_SI_OP | |
26345 | #define TARGET_ASM_ALIGNED_SI_OP "\t.word\t" | |
26346 | ||
26347 | #undef TARGET_ASM_CAN_OUTPUT_MI_THUNK | |
26348 | #define TARGET_ASM_CAN_OUTPUT_MI_THUNK \ | |
26349 | hook_bool_const_tree_hwi_hwi_const_tree_true | |
26350 | ||
e1c1ecb0 KT |
26351 | #undef TARGET_ASM_FILE_START |
26352 | #define TARGET_ASM_FILE_START aarch64_start_file | |
26353 | ||
43e9d192 IB |
26354 | #undef TARGET_ASM_OUTPUT_MI_THUNK |
26355 | #define TARGET_ASM_OUTPUT_MI_THUNK aarch64_output_mi_thunk | |
26356 | ||
26357 | #undef TARGET_ASM_SELECT_RTX_SECTION | |
26358 | #define TARGET_ASM_SELECT_RTX_SECTION aarch64_select_rtx_section | |
26359 | ||
26360 | #undef TARGET_ASM_TRAMPOLINE_TEMPLATE | |
26361 | #define TARGET_ASM_TRAMPOLINE_TEMPLATE aarch64_asm_trampoline_template | |
26362 | ||
c292cfe5 SN |
26363 | #undef TARGET_ASM_PRINT_PATCHABLE_FUNCTION_ENTRY |
26364 | #define TARGET_ASM_PRINT_PATCHABLE_FUNCTION_ENTRY aarch64_print_patchable_function_entry | |
26365 | ||
43e9d192 IB |
26366 | #undef TARGET_BUILD_BUILTIN_VA_LIST |
26367 | #define TARGET_BUILD_BUILTIN_VA_LIST aarch64_build_builtin_va_list | |
26368 | ||
26369 | #undef TARGET_CALLEE_COPIES | |
7256c719 | 26370 | #define TARGET_CALLEE_COPIES hook_bool_CUMULATIVE_ARGS_arg_info_false |
43e9d192 IB |
26371 | |
26372 | #undef TARGET_CAN_ELIMINATE | |
26373 | #define TARGET_CAN_ELIMINATE aarch64_can_eliminate | |
26374 | ||
1fd8d40c KT |
26375 | #undef TARGET_CAN_INLINE_P |
26376 | #define TARGET_CAN_INLINE_P aarch64_can_inline_p | |
26377 | ||
43e9d192 IB |
26378 | #undef TARGET_CANNOT_FORCE_CONST_MEM |
26379 | #define TARGET_CANNOT_FORCE_CONST_MEM aarch64_cannot_force_const_mem | |
26380 | ||
50487d79 EM |
26381 | #undef TARGET_CASE_VALUES_THRESHOLD |
26382 | #define TARGET_CASE_VALUES_THRESHOLD aarch64_case_values_threshold | |
26383 | ||
43e9d192 IB |
26384 | #undef TARGET_CONDITIONAL_REGISTER_USAGE |
26385 | #define TARGET_CONDITIONAL_REGISTER_USAGE aarch64_conditional_register_usage | |
26386 | ||
38e62001 RS |
26387 | #undef TARGET_MEMBER_TYPE_FORCES_BLK |
26388 | #define TARGET_MEMBER_TYPE_FORCES_BLK aarch64_member_type_forces_blk | |
26389 | ||
43e9d192 IB |
26390 | /* Only the least significant bit is used for initialization guard |
26391 | variables. */ | |
26392 | #undef TARGET_CXX_GUARD_MASK_BIT | |
26393 | #define TARGET_CXX_GUARD_MASK_BIT hook_bool_void_true | |
26394 | ||
26395 | #undef TARGET_C_MODE_FOR_SUFFIX | |
26396 | #define TARGET_C_MODE_FOR_SUFFIX aarch64_c_mode_for_suffix | |
26397 | ||
26398 | #ifdef TARGET_BIG_ENDIAN_DEFAULT | |
26399 | #undef TARGET_DEFAULT_TARGET_FLAGS | |
26400 | #define TARGET_DEFAULT_TARGET_FLAGS (MASK_BIG_END) | |
26401 | #endif | |
26402 | ||
26403 | #undef TARGET_CLASS_MAX_NREGS | |
26404 | #define TARGET_CLASS_MAX_NREGS aarch64_class_max_nregs | |
26405 | ||
119103ca JG |
26406 | #undef TARGET_BUILTIN_DECL |
26407 | #define TARGET_BUILTIN_DECL aarch64_builtin_decl | |
26408 | ||
a6fc00da BH |
26409 | #undef TARGET_BUILTIN_RECIPROCAL |
26410 | #define TARGET_BUILTIN_RECIPROCAL aarch64_builtin_reciprocal | |
26411 | ||
11e554b3 JG |
26412 | #undef TARGET_C_EXCESS_PRECISION |
26413 | #define TARGET_C_EXCESS_PRECISION aarch64_excess_precision | |
26414 | ||
43e9d192 IB |
26415 | #undef TARGET_EXPAND_BUILTIN |
26416 | #define TARGET_EXPAND_BUILTIN aarch64_expand_builtin | |
26417 | ||
26418 | #undef TARGET_EXPAND_BUILTIN_VA_START | |
26419 | #define TARGET_EXPAND_BUILTIN_VA_START aarch64_expand_builtin_va_start | |
26420 | ||
9697e620 JG |
26421 | #undef TARGET_FOLD_BUILTIN |
26422 | #define TARGET_FOLD_BUILTIN aarch64_fold_builtin | |
26423 | ||
43e9d192 IB |
26424 | #undef TARGET_FUNCTION_ARG |
26425 | #define TARGET_FUNCTION_ARG aarch64_function_arg | |
26426 | ||
26427 | #undef TARGET_FUNCTION_ARG_ADVANCE | |
26428 | #define TARGET_FUNCTION_ARG_ADVANCE aarch64_function_arg_advance | |
26429 | ||
26430 | #undef TARGET_FUNCTION_ARG_BOUNDARY | |
26431 | #define TARGET_FUNCTION_ARG_BOUNDARY aarch64_function_arg_boundary | |
26432 | ||
76b0cbf8 RS |
26433 | #undef TARGET_FUNCTION_ARG_PADDING |
26434 | #define TARGET_FUNCTION_ARG_PADDING aarch64_function_arg_padding | |
26435 | ||
43cacb12 RS |
26436 | #undef TARGET_GET_RAW_RESULT_MODE |
26437 | #define TARGET_GET_RAW_RESULT_MODE aarch64_get_reg_raw_mode | |
26438 | #undef TARGET_GET_RAW_ARG_MODE | |
26439 | #define TARGET_GET_RAW_ARG_MODE aarch64_get_reg_raw_mode | |
26440 | ||
43e9d192 IB |
26441 | #undef TARGET_FUNCTION_OK_FOR_SIBCALL |
26442 | #define TARGET_FUNCTION_OK_FOR_SIBCALL aarch64_function_ok_for_sibcall | |
26443 | ||
26444 | #undef TARGET_FUNCTION_VALUE | |
26445 | #define TARGET_FUNCTION_VALUE aarch64_function_value | |
26446 | ||
26447 | #undef TARGET_FUNCTION_VALUE_REGNO_P | |
26448 | #define TARGET_FUNCTION_VALUE_REGNO_P aarch64_function_value_regno_p | |
26449 | ||
fc72cba7 AL |
26450 | #undef TARGET_GIMPLE_FOLD_BUILTIN |
26451 | #define TARGET_GIMPLE_FOLD_BUILTIN aarch64_gimple_fold_builtin | |
0ac198d3 | 26452 | |
43e9d192 IB |
26453 | #undef TARGET_GIMPLIFY_VA_ARG_EXPR |
26454 | #define TARGET_GIMPLIFY_VA_ARG_EXPR aarch64_gimplify_va_arg_expr | |
26455 | ||
26456 | #undef TARGET_INIT_BUILTINS | |
26457 | #define TARGET_INIT_BUILTINS aarch64_init_builtins | |
26458 | ||
c64f7d37 WD |
26459 | #undef TARGET_IRA_CHANGE_PSEUDO_ALLOCNO_CLASS |
26460 | #define TARGET_IRA_CHANGE_PSEUDO_ALLOCNO_CLASS \ | |
26461 | aarch64_ira_change_pseudo_allocno_class | |
26462 | ||
43e9d192 IB |
26463 | #undef TARGET_LEGITIMATE_ADDRESS_P |
26464 | #define TARGET_LEGITIMATE_ADDRESS_P aarch64_legitimate_address_hook_p | |
26465 | ||
26466 | #undef TARGET_LEGITIMATE_CONSTANT_P | |
26467 | #define TARGET_LEGITIMATE_CONSTANT_P aarch64_legitimate_constant_p | |
26468 | ||
491ec060 WD |
26469 | #undef TARGET_LEGITIMIZE_ADDRESS_DISPLACEMENT |
26470 | #define TARGET_LEGITIMIZE_ADDRESS_DISPLACEMENT \ | |
26471 | aarch64_legitimize_address_displacement | |
26472 | ||
43e9d192 IB |
26473 | #undef TARGET_LIBGCC_CMP_RETURN_MODE |
26474 | #define TARGET_LIBGCC_CMP_RETURN_MODE aarch64_libgcc_cmp_return_mode | |
26475 | ||
11e554b3 JG |
26476 | #undef TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P |
26477 | #define TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P \ | |
26478 | aarch64_libgcc_floating_mode_supported_p | |
26479 | ||
ac2b960f YZ |
26480 | #undef TARGET_MANGLE_TYPE |
26481 | #define TARGET_MANGLE_TYPE aarch64_mangle_type | |
26482 | ||
98698967 SMW |
26483 | #undef TARGET_INVALID_CONVERSION |
26484 | #define TARGET_INVALID_CONVERSION aarch64_invalid_conversion | |
26485 | ||
26486 | #undef TARGET_INVALID_UNARY_OP | |
26487 | #define TARGET_INVALID_UNARY_OP aarch64_invalid_unary_op | |
26488 | ||
26489 | #undef TARGET_INVALID_BINARY_OP | |
26490 | #define TARGET_INVALID_BINARY_OP aarch64_invalid_binary_op | |
26491 | ||
65ef05d0 RS |
26492 | #undef TARGET_VERIFY_TYPE_CONTEXT |
26493 | #define TARGET_VERIFY_TYPE_CONTEXT aarch64_verify_type_context | |
26494 | ||
43e9d192 IB |
26495 | #undef TARGET_MEMORY_MOVE_COST |
26496 | #define TARGET_MEMORY_MOVE_COST aarch64_memory_move_cost | |
26497 | ||
26e0ff94 WD |
26498 | #undef TARGET_MIN_DIVISIONS_FOR_RECIP_MUL |
26499 | #define TARGET_MIN_DIVISIONS_FOR_RECIP_MUL aarch64_min_divisions_for_recip_mul | |
26500 | ||
43e9d192 IB |
26501 | #undef TARGET_MUST_PASS_IN_STACK |
26502 | #define TARGET_MUST_PASS_IN_STACK must_pass_in_stack_var_size | |
26503 | ||
26504 | /* This target hook should return true if accesses to volatile bitfields | |
26505 | should use the narrowest mode possible. It should return false if these | |
26506 | accesses should use the bitfield container type. */ | |
26507 | #undef TARGET_NARROW_VOLATILE_BITFIELD | |
26508 | #define TARGET_NARROW_VOLATILE_BITFIELD hook_bool_void_false | |
26509 | ||
26510 | #undef TARGET_OPTION_OVERRIDE | |
26511 | #define TARGET_OPTION_OVERRIDE aarch64_override_options | |
26512 | ||
26513 | #undef TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE | |
26514 | #define TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE \ | |
26515 | aarch64_override_options_after_change | |
26516 | ||
29a14a1a MK |
26517 | #undef TARGET_OFFLOAD_OPTIONS |
26518 | #define TARGET_OFFLOAD_OPTIONS aarch64_offload_options | |
26519 | ||
361fb3ee KT |
26520 | #undef TARGET_OPTION_SAVE |
26521 | #define TARGET_OPTION_SAVE aarch64_option_save | |
26522 | ||
26523 | #undef TARGET_OPTION_RESTORE | |
26524 | #define TARGET_OPTION_RESTORE aarch64_option_restore | |
26525 | ||
26526 | #undef TARGET_OPTION_PRINT | |
26527 | #define TARGET_OPTION_PRINT aarch64_option_print | |
26528 | ||
5a2c8331 KT |
26529 | #undef TARGET_OPTION_VALID_ATTRIBUTE_P |
26530 | #define TARGET_OPTION_VALID_ATTRIBUTE_P aarch64_option_valid_attribute_p | |
26531 | ||
d78006d9 KT |
26532 | #undef TARGET_SET_CURRENT_FUNCTION |
26533 | #define TARGET_SET_CURRENT_FUNCTION aarch64_set_current_function | |
26534 | ||
43e9d192 IB |
26535 | #undef TARGET_PASS_BY_REFERENCE |
26536 | #define TARGET_PASS_BY_REFERENCE aarch64_pass_by_reference | |
26537 | ||
26538 | #undef TARGET_PREFERRED_RELOAD_CLASS | |
26539 | #define TARGET_PREFERRED_RELOAD_CLASS aarch64_preferred_reload_class | |
26540 | ||
cee66c68 WD |
26541 | #undef TARGET_SCHED_REASSOCIATION_WIDTH |
26542 | #define TARGET_SCHED_REASSOCIATION_WIDTH aarch64_reassociation_width | |
26543 | ||
c2ec330c AL |
26544 | #undef TARGET_PROMOTED_TYPE |
26545 | #define TARGET_PROMOTED_TYPE aarch64_promoted_type | |
26546 | ||
43e9d192 IB |
26547 | #undef TARGET_SECONDARY_RELOAD |
26548 | #define TARGET_SECONDARY_RELOAD aarch64_secondary_reload | |
26549 | ||
26550 | #undef TARGET_SHIFT_TRUNCATION_MASK | |
26551 | #define TARGET_SHIFT_TRUNCATION_MASK aarch64_shift_truncation_mask | |
26552 | ||
26553 | #undef TARGET_SETUP_INCOMING_VARARGS | |
26554 | #define TARGET_SETUP_INCOMING_VARARGS aarch64_setup_incoming_varargs | |
26555 | ||
26556 | #undef TARGET_STRUCT_VALUE_RTX | |
26557 | #define TARGET_STRUCT_VALUE_RTX aarch64_struct_value_rtx | |
26558 | ||
26559 | #undef TARGET_REGISTER_MOVE_COST | |
26560 | #define TARGET_REGISTER_MOVE_COST aarch64_register_move_cost | |
26561 | ||
26562 | #undef TARGET_RETURN_IN_MEMORY | |
26563 | #define TARGET_RETURN_IN_MEMORY aarch64_return_in_memory | |
26564 | ||
26565 | #undef TARGET_RETURN_IN_MSB | |
26566 | #define TARGET_RETURN_IN_MSB aarch64_return_in_msb | |
26567 | ||
26568 | #undef TARGET_RTX_COSTS | |
7cc2145f | 26569 | #define TARGET_RTX_COSTS aarch64_rtx_costs_wrapper |
43e9d192 | 26570 | |
2e5f8203 JG |
26571 | #undef TARGET_SCALAR_MODE_SUPPORTED_P |
26572 | #define TARGET_SCALAR_MODE_SUPPORTED_P aarch64_scalar_mode_supported_p | |
26573 | ||
d126a4ae AP |
26574 | #undef TARGET_SCHED_ISSUE_RATE |
26575 | #define TARGET_SCHED_ISSUE_RATE aarch64_sched_issue_rate | |
26576 | ||
d0bc0cb6 RS |
26577 | #undef TARGET_SCHED_VARIABLE_ISSUE |
26578 | #define TARGET_SCHED_VARIABLE_ISSUE aarch64_sched_variable_issue | |
26579 | ||
d03f7e44 MK |
26580 | #undef TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD |
26581 | #define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD \ | |
26582 | aarch64_sched_first_cycle_multipass_dfa_lookahead | |
26583 | ||
2d6bc7fa KT |
26584 | #undef TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD |
26585 | #define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD \ | |
26586 | aarch64_first_cycle_multipass_dfa_lookahead_guard | |
26587 | ||
827ab47a KT |
26588 | #undef TARGET_SHRINK_WRAP_GET_SEPARATE_COMPONENTS |
26589 | #define TARGET_SHRINK_WRAP_GET_SEPARATE_COMPONENTS \ | |
26590 | aarch64_get_separate_components | |
26591 | ||
26592 | #undef TARGET_SHRINK_WRAP_COMPONENTS_FOR_BB | |
26593 | #define TARGET_SHRINK_WRAP_COMPONENTS_FOR_BB \ | |
26594 | aarch64_components_for_bb | |
26595 | ||
26596 | #undef TARGET_SHRINK_WRAP_DISQUALIFY_COMPONENTS | |
26597 | #define TARGET_SHRINK_WRAP_DISQUALIFY_COMPONENTS \ | |
26598 | aarch64_disqualify_components | |
26599 | ||
26600 | #undef TARGET_SHRINK_WRAP_EMIT_PROLOGUE_COMPONENTS | |
26601 | #define TARGET_SHRINK_WRAP_EMIT_PROLOGUE_COMPONENTS \ | |
26602 | aarch64_emit_prologue_components | |
26603 | ||
26604 | #undef TARGET_SHRINK_WRAP_EMIT_EPILOGUE_COMPONENTS | |
26605 | #define TARGET_SHRINK_WRAP_EMIT_EPILOGUE_COMPONENTS \ | |
26606 | aarch64_emit_epilogue_components | |
26607 | ||
26608 | #undef TARGET_SHRINK_WRAP_SET_HANDLED_COMPONENTS | |
26609 | #define TARGET_SHRINK_WRAP_SET_HANDLED_COMPONENTS \ | |
26610 | aarch64_set_handled_components | |
26611 | ||
43e9d192 IB |
26612 | #undef TARGET_TRAMPOLINE_INIT |
26613 | #define TARGET_TRAMPOLINE_INIT aarch64_trampoline_init | |
26614 | ||
26615 | #undef TARGET_USE_BLOCKS_FOR_CONSTANT_P | |
26616 | #define TARGET_USE_BLOCKS_FOR_CONSTANT_P aarch64_use_blocks_for_constant_p | |
26617 | ||
26618 | #undef TARGET_VECTOR_MODE_SUPPORTED_P | |
26619 | #define TARGET_VECTOR_MODE_SUPPORTED_P aarch64_vector_mode_supported_p | |
26620 | ||
482b2b43 RS |
26621 | #undef TARGET_COMPATIBLE_VECTOR_TYPES_P |
26622 | #define TARGET_COMPATIBLE_VECTOR_TYPES_P aarch64_compatible_vector_types_p | |
26623 | ||
7df76747 N |
26624 | #undef TARGET_VECTORIZE_SUPPORT_VECTOR_MISALIGNMENT |
26625 | #define TARGET_VECTORIZE_SUPPORT_VECTOR_MISALIGNMENT \ | |
26626 | aarch64_builtin_support_vector_misalignment | |
26627 | ||
9f4cbab8 RS |
26628 | #undef TARGET_ARRAY_MODE |
26629 | #define TARGET_ARRAY_MODE aarch64_array_mode | |
26630 | ||
43e9d192 IB |
26631 | #undef TARGET_ARRAY_MODE_SUPPORTED_P |
26632 | #define TARGET_ARRAY_MODE_SUPPORTED_P aarch64_array_mode_supported_p | |
26633 | ||
6239dd05 RS |
26634 | #undef TARGET_VECTORIZE_CREATE_COSTS |
26635 | #define TARGET_VECTORIZE_CREATE_COSTS aarch64_vectorize_create_costs | |
50a525b5 | 26636 | |
8990e73a TB |
26637 | #undef TARGET_VECTORIZE_BUILTIN_VECTORIZATION_COST |
26638 | #define TARGET_VECTORIZE_BUILTIN_VECTORIZATION_COST \ | |
26639 | aarch64_builtin_vectorization_cost | |
26640 | ||
43e9d192 IB |
26641 | #undef TARGET_VECTORIZE_PREFERRED_SIMD_MODE |
26642 | #define TARGET_VECTORIZE_PREFERRED_SIMD_MODE aarch64_preferred_simd_mode | |
26643 | ||
42fc9a7f JG |
26644 | #undef TARGET_VECTORIZE_BUILTINS |
26645 | #define TARGET_VECTORIZE_BUILTINS | |
26646 | ||
26647 | #undef TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION | |
26648 | #define TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION \ | |
26649 | aarch64_builtin_vectorized_function | |
26650 | ||
e021fb86 RS |
26651 | #undef TARGET_VECTORIZE_AUTOVECTORIZE_VECTOR_MODES |
26652 | #define TARGET_VECTORIZE_AUTOVECTORIZE_VECTOR_MODES \ | |
26653 | aarch64_autovectorize_vector_modes | |
3b357264 | 26654 | |
aa87aced KV |
26655 | #undef TARGET_ATOMIC_ASSIGN_EXPAND_FENV |
26656 | #define TARGET_ATOMIC_ASSIGN_EXPAND_FENV \ | |
26657 | aarch64_atomic_assign_expand_fenv | |
26658 | ||
43e9d192 IB |
26659 | /* Section anchor support. */ |
26660 | ||
26661 | #undef TARGET_MIN_ANCHOR_OFFSET | |
26662 | #define TARGET_MIN_ANCHOR_OFFSET -256 | |
26663 | ||
26664 | /* Limit the maximum anchor offset to 4k-1, since that's the limit for a | |
26665 | byte offset; we can do much more for larger data types, but have no way | |
26666 | to determine the size of the access. We assume accesses are aligned. */ | |
26667 | #undef TARGET_MAX_ANCHOR_OFFSET | |
26668 | #define TARGET_MAX_ANCHOR_OFFSET 4095 | |
26669 | ||
db0253a4 TB |
26670 | #undef TARGET_VECTOR_ALIGNMENT |
26671 | #define TARGET_VECTOR_ALIGNMENT aarch64_simd_vector_alignment | |
26672 | ||
43cacb12 RS |
26673 | #undef TARGET_VECTORIZE_PREFERRED_VECTOR_ALIGNMENT |
26674 | #define TARGET_VECTORIZE_PREFERRED_VECTOR_ALIGNMENT \ | |
26675 | aarch64_vectorize_preferred_vector_alignment | |
db0253a4 TB |
26676 | #undef TARGET_VECTORIZE_VECTOR_ALIGNMENT_REACHABLE |
26677 | #define TARGET_VECTORIZE_VECTOR_ALIGNMENT_REACHABLE \ | |
26678 | aarch64_simd_vector_alignment_reachable | |
26679 | ||
88b08073 JG |
26680 | /* vec_perm support. */ |
26681 | ||
f151c9e1 RS |
26682 | #undef TARGET_VECTORIZE_VEC_PERM_CONST |
26683 | #define TARGET_VECTORIZE_VEC_PERM_CONST \ | |
26684 | aarch64_vectorize_vec_perm_const | |
88b08073 | 26685 | |
74166aab RS |
26686 | #undef TARGET_VECTORIZE_RELATED_MODE |
26687 | #define TARGET_VECTORIZE_RELATED_MODE aarch64_vectorize_related_mode | |
43cacb12 RS |
26688 | #undef TARGET_VECTORIZE_GET_MASK_MODE |
26689 | #define TARGET_VECTORIZE_GET_MASK_MODE aarch64_get_mask_mode | |
76a34e3f RS |
26690 | #undef TARGET_VECTORIZE_EMPTY_MASK_IS_EXPENSIVE |
26691 | #define TARGET_VECTORIZE_EMPTY_MASK_IS_EXPENSIVE \ | |
26692 | aarch64_empty_mask_is_expensive | |
6a86928d RS |
26693 | #undef TARGET_PREFERRED_ELSE_VALUE |
26694 | #define TARGET_PREFERRED_ELSE_VALUE \ | |
26695 | aarch64_preferred_else_value | |
43cacb12 | 26696 | |
c2ec330c AL |
26697 | #undef TARGET_INIT_LIBFUNCS |
26698 | #define TARGET_INIT_LIBFUNCS aarch64_init_libfuncs | |
70f09188 | 26699 | |
706b2314 | 26700 | #undef TARGET_FIXED_CONDITION_CODE_REGS |
70f09188 AP |
26701 | #define TARGET_FIXED_CONDITION_CODE_REGS aarch64_fixed_condition_code_regs |
26702 | ||
5cb74e90 RR |
26703 | #undef TARGET_FLAGS_REGNUM |
26704 | #define TARGET_FLAGS_REGNUM CC_REGNUM | |
26705 | ||
78607708 TV |
26706 | #undef TARGET_CALL_FUSAGE_CONTAINS_NON_CALLEE_CLOBBERS |
26707 | #define TARGET_CALL_FUSAGE_CONTAINS_NON_CALLEE_CLOBBERS true | |
26708 | ||
a3125fc2 CL |
26709 | #undef TARGET_ASAN_SHADOW_OFFSET |
26710 | #define TARGET_ASAN_SHADOW_OFFSET aarch64_asan_shadow_offset | |
26711 | ||
0c4ec427 RE |
26712 | #undef TARGET_LEGITIMIZE_ADDRESS |
26713 | #define TARGET_LEGITIMIZE_ADDRESS aarch64_legitimize_address | |
26714 | ||
b48d6421 KT |
26715 | #undef TARGET_SCHED_CAN_SPECULATE_INSN |
26716 | #define TARGET_SCHED_CAN_SPECULATE_INSN aarch64_sched_can_speculate_insn | |
26717 | ||
594bdd53 FY |
26718 | #undef TARGET_CAN_USE_DOLOOP_P |
26719 | #define TARGET_CAN_USE_DOLOOP_P can_use_doloop_if_innermost | |
26720 | ||
9bca63d4 WD |
26721 | #undef TARGET_SCHED_ADJUST_PRIORITY |
26722 | #define TARGET_SCHED_ADJUST_PRIORITY aarch64_sched_adjust_priority | |
26723 | ||
6a569cdd KT |
26724 | #undef TARGET_SCHED_MACRO_FUSION_P |
26725 | #define TARGET_SCHED_MACRO_FUSION_P aarch64_macro_fusion_p | |
26726 | ||
26727 | #undef TARGET_SCHED_MACRO_FUSION_PAIR_P | |
26728 | #define TARGET_SCHED_MACRO_FUSION_PAIR_P aarch_macro_fusion_pair_p | |
26729 | ||
350013bc BC |
26730 | #undef TARGET_SCHED_FUSION_PRIORITY |
26731 | #define TARGET_SCHED_FUSION_PRIORITY aarch64_sched_fusion_priority | |
26732 | ||
7b841a12 JW |
26733 | #undef TARGET_UNSPEC_MAY_TRAP_P |
26734 | #define TARGET_UNSPEC_MAY_TRAP_P aarch64_unspec_may_trap_p | |
26735 | ||
1b1e81f8 JW |
26736 | #undef TARGET_USE_PSEUDO_PIC_REG |
26737 | #define TARGET_USE_PSEUDO_PIC_REG aarch64_use_pseudo_pic_reg | |
26738 | ||
cc8ca59e JB |
26739 | #undef TARGET_PRINT_OPERAND |
26740 | #define TARGET_PRINT_OPERAND aarch64_print_operand | |
26741 | ||
26742 | #undef TARGET_PRINT_OPERAND_ADDRESS | |
26743 | #define TARGET_PRINT_OPERAND_ADDRESS aarch64_print_operand_address | |
26744 | ||
74b27d8e RS |
26745 | #undef TARGET_ASM_OUTPUT_ADDR_CONST_EXTRA |
26746 | #define TARGET_ASM_OUTPUT_ADDR_CONST_EXTRA aarch64_output_addr_const_extra | |
26747 | ||
ee62a5a6 RS |
26748 | #undef TARGET_OPTAB_SUPPORTED_P |
26749 | #define TARGET_OPTAB_SUPPORTED_P aarch64_optab_supported_p | |
26750 | ||
43203dea RR |
26751 | #undef TARGET_OMIT_STRUCT_RETURN_REG |
26752 | #define TARGET_OMIT_STRUCT_RETURN_REG true | |
26753 | ||
43cacb12 RS |
26754 | #undef TARGET_DWARF_POLY_INDETERMINATE_VALUE |
26755 | #define TARGET_DWARF_POLY_INDETERMINATE_VALUE \ | |
26756 | aarch64_dwarf_poly_indeterminate_value | |
26757 | ||
f46fe37e EB |
26758 | /* The architecture reserves bits 0 and 1 so use bit 2 for descriptors. */ |
26759 | #undef TARGET_CUSTOM_FUNCTION_DESCRIPTORS | |
26760 | #define TARGET_CUSTOM_FUNCTION_DESCRIPTORS 4 | |
26761 | ||
c43f4279 RS |
26762 | #undef TARGET_HARD_REGNO_NREGS |
26763 | #define TARGET_HARD_REGNO_NREGS aarch64_hard_regno_nregs | |
f939c3e6 RS |
26764 | #undef TARGET_HARD_REGNO_MODE_OK |
26765 | #define TARGET_HARD_REGNO_MODE_OK aarch64_hard_regno_mode_ok | |
26766 | ||
99e1629f RS |
26767 | #undef TARGET_MODES_TIEABLE_P |
26768 | #define TARGET_MODES_TIEABLE_P aarch64_modes_tieable_p | |
26769 | ||
80ec73f4 RS |
26770 | #undef TARGET_HARD_REGNO_CALL_PART_CLOBBERED |
26771 | #define TARGET_HARD_REGNO_CALL_PART_CLOBBERED \ | |
26772 | aarch64_hard_regno_call_part_clobbered | |
26773 | ||
5a5a3bc5 RS |
26774 | #undef TARGET_INSN_CALLEE_ABI |
26775 | #define TARGET_INSN_CALLEE_ABI aarch64_insn_callee_abi | |
b3650d40 | 26776 | |
58e17cf8 RS |
26777 | #undef TARGET_CONSTANT_ALIGNMENT |
26778 | #define TARGET_CONSTANT_ALIGNMENT aarch64_constant_alignment | |
26779 | ||
8c6e3b23 TC |
26780 | #undef TARGET_STACK_CLASH_PROTECTION_ALLOCA_PROBE_RANGE |
26781 | #define TARGET_STACK_CLASH_PROTECTION_ALLOCA_PROBE_RANGE \ | |
26782 | aarch64_stack_clash_protection_alloca_probe_range | |
26783 | ||
43cacb12 RS |
26784 | #undef TARGET_COMPUTE_PRESSURE_CLASSES |
26785 | #define TARGET_COMPUTE_PRESSURE_CLASSES aarch64_compute_pressure_classes | |
26786 | ||
26787 | #undef TARGET_CAN_CHANGE_MODE_CLASS | |
26788 | #define TARGET_CAN_CHANGE_MODE_CLASS aarch64_can_change_mode_class | |
26789 | ||
5cce8171 RS |
26790 | #undef TARGET_SELECT_EARLY_REMAT_MODES |
26791 | #define TARGET_SELECT_EARLY_REMAT_MODES aarch64_select_early_remat_modes | |
26792 | ||
c0111dc4 RE |
26793 | #undef TARGET_SPECULATION_SAFE_VALUE |
26794 | #define TARGET_SPECULATION_SAFE_VALUE aarch64_speculation_safe_value | |
26795 | ||
2d56d6ba KT |
26796 | #undef TARGET_ESTIMATED_POLY_VALUE |
26797 | #define TARGET_ESTIMATED_POLY_VALUE aarch64_estimated_poly_value | |
26798 | ||
a0d0b980 SE |
26799 | #undef TARGET_ATTRIBUTE_TABLE |
26800 | #define TARGET_ATTRIBUTE_TABLE aarch64_attribute_table | |
26801 | ||
d9186814 SE |
26802 | #undef TARGET_SIMD_CLONE_COMPUTE_VECSIZE_AND_SIMDLEN |
26803 | #define TARGET_SIMD_CLONE_COMPUTE_VECSIZE_AND_SIMDLEN \ | |
26804 | aarch64_simd_clone_compute_vecsize_and_simdlen | |
26805 | ||
26806 | #undef TARGET_SIMD_CLONE_ADJUST | |
26807 | #define TARGET_SIMD_CLONE_ADJUST aarch64_simd_clone_adjust | |
26808 | ||
26809 | #undef TARGET_SIMD_CLONE_USABLE | |
26810 | #define TARGET_SIMD_CLONE_USABLE aarch64_simd_clone_usable | |
26811 | ||
497f281c SE |
26812 | #undef TARGET_COMP_TYPE_ATTRIBUTES |
26813 | #define TARGET_COMP_TYPE_ATTRIBUTES aarch64_comp_type_attributes | |
26814 | ||
3bac1e20 SE |
26815 | #undef TARGET_GET_MULTILIB_ABI_NAME |
26816 | #define TARGET_GET_MULTILIB_ABI_NAME aarch64_get_multilib_abi_name | |
26817 | ||
002ffd3c RS |
26818 | #undef TARGET_FNTYPE_ABI |
26819 | #define TARGET_FNTYPE_ABI aarch64_fntype_abi | |
26820 | ||
3bd87832 MM |
26821 | #undef TARGET_MEMTAG_CAN_TAG_ADDRESSES |
26822 | #define TARGET_MEMTAG_CAN_TAG_ADDRESSES aarch64_can_tag_addresses | |
26823 | ||
51b86113 DM |
26824 | #if CHECKING_P |
26825 | #undef TARGET_RUN_TARGET_SELFTESTS | |
26826 | #define TARGET_RUN_TARGET_SELFTESTS selftest::aarch64_run_selftests | |
26827 | #endif /* #if CHECKING_P */ | |
26828 | ||
8fc16d72 ST |
26829 | #undef TARGET_ASM_POST_CFI_STARTPROC |
26830 | #define TARGET_ASM_POST_CFI_STARTPROC aarch64_post_cfi_startproc | |
26831 | ||
c600df9a RS |
26832 | #undef TARGET_STRICT_ARGUMENT_NAMING |
26833 | #define TARGET_STRICT_ARGUMENT_NAMING hook_bool_CUMULATIVE_ARGS_true | |
26834 | ||
1a7a35c7 RH |
26835 | #undef TARGET_MD_ASM_ADJUST |
26836 | #define TARGET_MD_ASM_ADJUST arm_md_asm_adjust | |
26837 | ||
96b7f495 MM |
26838 | #undef TARGET_ASM_FILE_END |
26839 | #define TARGET_ASM_FILE_END aarch64_asm_file_end | |
26840 | ||
26841 | #undef TARGET_ASM_FUNCTION_EPILOGUE | |
26842 | #define TARGET_ASM_FUNCTION_EPILOGUE aarch64_sls_emit_blr_function_thunks | |
26843 | ||
43e9d192 IB |
26844 | struct gcc_target targetm = TARGET_INITIALIZER; |
26845 | ||
26846 | #include "gt-aarch64.h" |