]>
Commit | Line | Data |
---|---|---|
45550790 | 1 | /* Default target hook functions. |
f1717362 | 2 | Copyright (C) 2003-2016 Free Software Foundation, Inc. |
45550790 | 3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8c4c00c1 | 8 | Software Foundation; either version 3, or (at your option) any later |
45550790 | 9 | version. |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
8c4c00c1 | 17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
45550790 | 19 | |
3974200f | 20 | /* The migration of target macros to target hooks works as follows: |
21 | ||
22 | 1. Create a target hook that uses the existing target macros to | |
23 | implement the same functionality. | |
24 | ||
25 | 2. Convert all the MI files to use the hook instead of the macro. | |
26 | ||
27 | 3. Repeat for a majority of the remaining target macros. This will | |
28 | take some time. | |
29 | ||
30 | 4. Tell target maintainers to start migrating. | |
31 | ||
32 | 5. Eventually convert the backends to override the hook instead of | |
33 | defining the macros. This will take some time too. | |
34 | ||
35 | 6. TBD when, poison the macros. Unmigrated targets will break at | |
36 | this point. | |
37 | ||
38 | Note that we expect steps 1-3 to be done by the people that | |
39 | understand what the MI does with each macro, and step 5 to be done | |
40 | by the target maintainers for their respective targets. | |
41 | ||
42 | Note that steps 1 and 2 don't have to be done together, but no | |
43 | target can override the new hook until step 2 is complete for it. | |
44 | ||
45 | Once the macros are poisoned, we will revert to the old migration | |
46 | rules - migrate the macro, callers, and targets all at once. This | |
47 | comment can thus be removed at that point. */ | |
48 | ||
45550790 | 49 | #include "config.h" |
50 | #include "system.h" | |
51 | #include "coretypes.h" | |
7c29e30e | 52 | #include "target.h" |
53 | #include "function.h" | |
45550790 | 54 | #include "rtl.h" |
55 | #include "tree.h" | |
7c29e30e | 56 | #include "tree-ssa-alias.h" |
57 | #include "gimple-expr.h" | |
58 | #include "tm_p.h" | |
59 | #include "stringpool.h" | |
60 | #include "tree-ssanames.h" | |
7c29e30e | 61 | #include "optabs.h" |
62 | #include "regs.h" | |
7c29e30e | 63 | #include "recog.h" |
64 | #include "diagnostic-core.h" | |
b20a8bb4 | 65 | #include "fold-const.h" |
9ed99284 | 66 | #include "stor-layout.h" |
67 | #include "varasm.h" | |
d53441c8 | 68 | #include "flags.h" |
d53441c8 | 69 | #include "explow.h" |
70 | #include "calls.h" | |
45550790 | 71 | #include "expr.h" |
daeb6b83 | 72 | #include "output.h" |
4d58fa46 | 73 | #include "reload.h" |
0e763b2a | 74 | #include "intl.h" |
75 | #include "opts.h" | |
a8783bee | 76 | #include "gimplify.h" |
45550790 | 77 | |
b2aef146 | 78 | |
fd50b071 | 79 | bool |
3754d046 | 80 | default_legitimate_address_p (machine_mode mode ATTRIBUTE_UNUSED, |
fd50b071 | 81 | rtx addr ATTRIBUTE_UNUSED, |
82 | bool strict ATTRIBUTE_UNUSED) | |
83 | { | |
84 | #ifdef GO_IF_LEGITIMATE_ADDRESS | |
85 | /* Defer to the old implementation using a goto. */ | |
86 | if (strict) | |
87 | return strict_memory_address_p (mode, addr); | |
88 | else | |
89 | return memory_address_p (mode, addr); | |
90 | #else | |
91 | gcc_unreachable (); | |
92 | #endif | |
93 | } | |
94 | ||
864af209 | 95 | void |
96 | default_external_libcall (rtx fun ATTRIBUTE_UNUSED) | |
97 | { | |
98 | #ifdef ASM_OUTPUT_EXTERNAL_LIBCALL | |
9af5ce0c | 99 | ASM_OUTPUT_EXTERNAL_LIBCALL (asm_out_file, fun); |
864af209 | 100 | #endif |
101 | } | |
102 | ||
77ad8e5a | 103 | int |
104 | default_unspec_may_trap_p (const_rtx x, unsigned flags) | |
105 | { | |
106 | int i; | |
107 | ||
bcbfcebe | 108 | /* Any floating arithmetic may trap. */ |
109 | if ((SCALAR_FLOAT_MODE_P (GET_MODE (x)) && flag_trapping_math)) | |
77ad8e5a | 110 | return 1; |
111 | ||
112 | for (i = 0; i < XVECLEN (x, 0); ++i) | |
113 | { | |
114 | if (may_trap_p_1 (XVECEXP (x, 0, i), flags)) | |
115 | return 1; | |
116 | } | |
117 | ||
118 | return 0; | |
119 | } | |
120 | ||
3754d046 | 121 | machine_mode |
3b2411a8 | 122 | default_promote_function_mode (const_tree type ATTRIBUTE_UNUSED, |
3754d046 | 123 | machine_mode mode, |
3b2411a8 | 124 | int *punsignedp ATTRIBUTE_UNUSED, |
125 | const_tree funtype ATTRIBUTE_UNUSED, | |
126 | int for_return ATTRIBUTE_UNUSED) | |
127 | { | |
adaf4ef0 | 128 | if (type != NULL_TREE && for_return == 2) |
c879dbcf | 129 | return promote_mode (type, mode, punsignedp); |
3b2411a8 | 130 | return mode; |
131 | } | |
132 | ||
3754d046 | 133 | machine_mode |
3b2411a8 | 134 | default_promote_function_mode_always_promote (const_tree type, |
3754d046 | 135 | machine_mode mode, |
3b2411a8 | 136 | int *punsignedp, |
137 | const_tree funtype ATTRIBUTE_UNUSED, | |
138 | int for_return ATTRIBUTE_UNUSED) | |
139 | { | |
140 | return promote_mode (type, mode, punsignedp); | |
141 | } | |
142 | ||
3754d046 | 143 | machine_mode |
144 | default_cc_modes_compatible (machine_mode m1, machine_mode m2) | |
124ac4e4 | 145 | { |
146 | if (m1 == m2) | |
147 | return m1; | |
148 | return VOIDmode; | |
149 | } | |
150 | ||
45550790 | 151 | bool |
fb80456a | 152 | default_return_in_memory (const_tree type, |
153 | const_tree fntype ATTRIBUTE_UNUSED) | |
45550790 | 154 | { |
e409e1ba | 155 | return (TYPE_MODE (type) == BLKmode); |
45550790 | 156 | } |
157 | ||
41e3a0c7 | 158 | rtx |
159 | default_legitimize_address (rtx x, rtx orig_x ATTRIBUTE_UNUSED, | |
3754d046 | 160 | machine_mode mode ATTRIBUTE_UNUSED) |
41e3a0c7 | 161 | { |
162 | return x; | |
163 | } | |
164 | ||
968ba45e | 165 | bool |
166 | default_legitimize_address_displacement (rtx *disp ATTRIBUTE_UNUSED, | |
167 | rtx *offset ATTRIBUTE_UNUSED, | |
168 | machine_mode mode ATTRIBUTE_UNUSED) | |
169 | { | |
170 | return false; | |
171 | } | |
172 | ||
45550790 | 173 | rtx |
174 | default_expand_builtin_saveregs (void) | |
175 | { | |
45550790 | 176 | error ("__builtin_saveregs not supported by this target"); |
177 | return const0_rtx; | |
45550790 | 178 | } |
179 | ||
180 | void | |
39cba157 | 181 | default_setup_incoming_varargs (cumulative_args_t ca ATTRIBUTE_UNUSED, |
3754d046 | 182 | machine_mode mode ATTRIBUTE_UNUSED, |
45550790 | 183 | tree type ATTRIBUTE_UNUSED, |
184 | int *pretend_arg_size ATTRIBUTE_UNUSED, | |
185 | int second_time ATTRIBUTE_UNUSED) | |
186 | { | |
45550790 | 187 | } |
188 | ||
e3e026e8 | 189 | /* The default implementation of TARGET_BUILTIN_SETJMP_FRAME_VALUE. */ |
190 | ||
191 | rtx | |
192 | default_builtin_setjmp_frame_value (void) | |
193 | { | |
194 | return virtual_stack_vars_rtx; | |
195 | } | |
196 | ||
30a10006 | 197 | /* Generic hook that takes a CUMULATIVE_ARGS pointer and returns false. */ |
9878c8d9 | 198 | |
45550790 | 199 | bool |
39cba157 | 200 | hook_bool_CUMULATIVE_ARGS_false (cumulative_args_t ca ATTRIBUTE_UNUSED) |
45550790 | 201 | { |
1ce13983 | 202 | return false; |
45550790 | 203 | } |
204 | ||
205 | bool | |
39cba157 | 206 | default_pretend_outgoing_varargs_named (cumulative_args_t ca ATTRIBUTE_UNUSED) |
45550790 | 207 | { |
30a10006 | 208 | return (targetm.calls.setup_incoming_varargs |
209 | != default_setup_incoming_varargs); | |
45550790 | 210 | } |
4e00ee67 | 211 | |
3754d046 | 212 | machine_mode |
95215948 | 213 | default_eh_return_filter_mode (void) |
214 | { | |
1bd43494 | 215 | return targetm.unwind_word_mode (); |
95215948 | 216 | } |
217 | ||
3754d046 | 218 | machine_mode |
0ef89dfd | 219 | default_libgcc_cmp_return_mode (void) |
220 | { | |
221 | return word_mode; | |
222 | } | |
223 | ||
3754d046 | 224 | machine_mode |
0ef89dfd | 225 | default_libgcc_shift_count_mode (void) |
226 | { | |
227 | return word_mode; | |
228 | } | |
229 | ||
3754d046 | 230 | machine_mode |
1bd43494 | 231 | default_unwind_word_mode (void) |
232 | { | |
233 | return word_mode; | |
234 | } | |
235 | ||
c49547c4 | 236 | /* The default implementation of TARGET_SHIFT_TRUNCATION_MASK. */ |
237 | ||
238 | unsigned HOST_WIDE_INT | |
3754d046 | 239 | default_shift_truncation_mask (machine_mode mode) |
c49547c4 | 240 | { |
241 | return SHIFT_COUNT_TRUNCATED ? GET_MODE_BITSIZE (mode) - 1 : 0; | |
242 | } | |
243 | ||
ac70caad | 244 | /* The default implementation of TARGET_MIN_DIVISIONS_FOR_RECIP_MUL. */ |
245 | ||
246 | unsigned int | |
3754d046 | 247 | default_min_divisions_for_recip_mul (machine_mode mode ATTRIBUTE_UNUSED) |
ac70caad | 248 | { |
249 | return have_insn_for (DIV, mode) ? 3 : 2; | |
250 | } | |
251 | ||
4956440a | 252 | /* The default implementation of TARGET_MODE_REP_EXTENDED. */ |
253 | ||
254 | int | |
3754d046 | 255 | default_mode_rep_extended (machine_mode mode ATTRIBUTE_UNUSED, |
256 | machine_mode mode_rep ATTRIBUTE_UNUSED) | |
4956440a | 257 | { |
258 | return UNKNOWN; | |
259 | } | |
260 | ||
4e00ee67 | 261 | /* Generic hook that takes a CUMULATIVE_ARGS pointer and returns true. */ |
b6ea32c3 | 262 | |
4e00ee67 | 263 | bool |
39cba157 | 264 | hook_bool_CUMULATIVE_ARGS_true (cumulative_args_t a ATTRIBUTE_UNUSED) |
4e00ee67 | 265 | { |
266 | return true; | |
267 | } | |
c1dc02de | 268 | |
430be8e2 | 269 | /* Return machine mode for non-standard suffix |
270 | or VOIDmode if non-standard suffixes are unsupported. */ | |
3754d046 | 271 | machine_mode |
430be8e2 | 272 | default_mode_for_suffix (char suffix ATTRIBUTE_UNUSED) |
273 | { | |
274 | return VOIDmode; | |
275 | } | |
c1dc02de | 276 | |
277 | /* The generic C++ ABI specifies this is a 64-bit value. */ | |
278 | tree | |
279 | default_cxx_guard_type (void) | |
280 | { | |
281 | return long_long_integer_type_node; | |
282 | } | |
600f4be7 | 283 | |
600f4be7 | 284 | /* Returns the size of the cookie to use when allocating an array |
285 | whose elements have the indicated TYPE. Assumes that it is already | |
286 | known that a cookie is needed. */ | |
287 | ||
288 | tree | |
289 | default_cxx_get_cookie_size (tree type) | |
290 | { | |
291 | tree cookie_size; | |
292 | ||
293 | /* We need to allocate an additional max (sizeof (size_t), alignof | |
294 | (true_type)) bytes. */ | |
295 | tree sizetype_size; | |
296 | tree type_align; | |
8ff30ff6 | 297 | |
600f4be7 | 298 | sizetype_size = size_in_bytes (sizetype); |
299 | type_align = size_int (TYPE_ALIGN_UNIT (type)); | |
d99d10ca | 300 | if (tree_int_cst_lt (type_align, sizetype_size)) |
600f4be7 | 301 | cookie_size = sizetype_size; |
302 | else | |
303 | cookie_size = type_align; | |
304 | ||
305 | return cookie_size; | |
306 | } | |
b981d932 | 307 | |
b981d932 | 308 | /* Return true if a parameter must be passed by reference. This version |
309 | of the TARGET_PASS_BY_REFERENCE hook uses just MUST_PASS_IN_STACK. */ | |
310 | ||
311 | bool | |
39cba157 | 312 | hook_pass_by_reference_must_pass_in_stack (cumulative_args_t c ATTRIBUTE_UNUSED, |
3754d046 | 313 | machine_mode mode ATTRIBUTE_UNUSED, const_tree type ATTRIBUTE_UNUSED, |
b981d932 | 314 | bool named_arg ATTRIBUTE_UNUSED) |
315 | { | |
316 | return targetm.calls.must_pass_in_stack (mode, type); | |
317 | } | |
8ec87476 | 318 | |
13f08ee7 | 319 | /* Return true if a parameter follows callee copies conventions. This |
320 | version of the hook is true for all named arguments. */ | |
321 | ||
322 | bool | |
39cba157 | 323 | hook_callee_copies_named (cumulative_args_t ca ATTRIBUTE_UNUSED, |
3754d046 | 324 | machine_mode mode ATTRIBUTE_UNUSED, |
fb80456a | 325 | const_tree type ATTRIBUTE_UNUSED, bool named) |
13f08ee7 | 326 | { |
327 | return named; | |
328 | } | |
8ec87476 | 329 | |
182e98f4 | 330 | /* Emit to STREAM the assembler syntax for insn operand X. */ |
331 | ||
332 | void | |
333 | default_print_operand (FILE *stream ATTRIBUTE_UNUSED, rtx x ATTRIBUTE_UNUSED, | |
334 | int code ATTRIBUTE_UNUSED) | |
335 | { | |
336 | #ifdef PRINT_OPERAND | |
337 | PRINT_OPERAND (stream, x, code); | |
338 | #else | |
339 | gcc_unreachable (); | |
340 | #endif | |
341 | } | |
342 | ||
343 | /* Emit to STREAM the assembler syntax for an insn operand whose memory | |
344 | address is X. */ | |
345 | ||
346 | void | |
347 | default_print_operand_address (FILE *stream ATTRIBUTE_UNUSED, | |
3c047fe9 | 348 | machine_mode /*mode*/, |
182e98f4 | 349 | rtx x ATTRIBUTE_UNUSED) |
350 | { | |
351 | #ifdef PRINT_OPERAND_ADDRESS | |
352 | PRINT_OPERAND_ADDRESS (stream, x); | |
353 | #else | |
354 | gcc_unreachable (); | |
355 | #endif | |
356 | } | |
357 | ||
358 | /* Return true if CODE is a valid punctuation character for the | |
359 | `print_operand' hook. */ | |
360 | ||
361 | bool | |
362 | default_print_operand_punct_valid_p (unsigned char code ATTRIBUTE_UNUSED) | |
363 | { | |
364 | #ifdef PRINT_OPERAND_PUNCT_VALID_P | |
365 | return PRINT_OPERAND_PUNCT_VALID_P (code); | |
366 | #else | |
367 | return false; | |
368 | #endif | |
369 | } | |
370 | ||
d86d364d | 371 | /* The default implementation of TARGET_MANGLE_ASSEMBLER_NAME. */ |
372 | tree | |
373 | default_mangle_assembler_name (const char *name ATTRIBUTE_UNUSED) | |
374 | { | |
375 | const char *skipped = name + (*name == '*' ? 1 : 0); | |
376 | const char *stripped = targetm.strip_name_encoding (skipped); | |
377 | if (*name != '*' && user_label_prefix[0]) | |
378 | stripped = ACONCAT ((user_label_prefix, stripped, NULL)); | |
379 | return get_identifier (stripped); | |
380 | } | |
381 | ||
b2aef146 | 382 | /* True if MODE is valid for the target. By "valid", we mean able to |
383 | be manipulated in non-trivial ways. In particular, this means all | |
384 | the arithmetic is supported. | |
385 | ||
386 | By default we guess this means that any C type is supported. If | |
387 | we can't map the mode back to a type that would be available in C, | |
388 | then reject it. Special case, here, is the double-word arithmetic | |
389 | supported by optabs.c. */ | |
390 | ||
391 | bool | |
3754d046 | 392 | default_scalar_mode_supported_p (machine_mode mode) |
b2aef146 | 393 | { |
394 | int precision = GET_MODE_PRECISION (mode); | |
395 | ||
396 | switch (GET_MODE_CLASS (mode)) | |
397 | { | |
398 | case MODE_PARTIAL_INT: | |
399 | case MODE_INT: | |
400 | if (precision == CHAR_TYPE_SIZE) | |
401 | return true; | |
402 | if (precision == SHORT_TYPE_SIZE) | |
403 | return true; | |
404 | if (precision == INT_TYPE_SIZE) | |
405 | return true; | |
406 | if (precision == LONG_TYPE_SIZE) | |
407 | return true; | |
408 | if (precision == LONG_LONG_TYPE_SIZE) | |
409 | return true; | |
410 | if (precision == 2 * BITS_PER_WORD) | |
411 | return true; | |
412 | return false; | |
413 | ||
414 | case MODE_FLOAT: | |
415 | if (precision == FLOAT_TYPE_SIZE) | |
416 | return true; | |
417 | if (precision == DOUBLE_TYPE_SIZE) | |
418 | return true; | |
419 | if (precision == LONG_DOUBLE_TYPE_SIZE) | |
420 | return true; | |
421 | return false; | |
422 | ||
c4503c0a | 423 | case MODE_DECIMAL_FLOAT: |
9421ebb9 | 424 | case MODE_FRACT: |
425 | case MODE_UFRACT: | |
426 | case MODE_ACCUM: | |
427 | case MODE_UACCUM: | |
c4503c0a | 428 | return false; |
429 | ||
b2aef146 | 430 | default: |
8c0963c4 | 431 | gcc_unreachable (); |
b2aef146 | 432 | } |
433 | } | |
13f08ee7 | 434 | |
d5957f0d | 435 | /* Return true if libgcc supports floating-point mode MODE (known to |
436 | be supported as a scalar mode). */ | |
437 | ||
438 | bool | |
3754d046 | 439 | default_libgcc_floating_mode_supported_p (machine_mode mode) |
d5957f0d | 440 | { |
441 | switch (mode) | |
442 | { | |
443 | #ifdef HAVE_SFmode | |
444 | case SFmode: | |
445 | #endif | |
446 | #ifdef HAVE_DFmode | |
447 | case DFmode: | |
448 | #endif | |
449 | #ifdef HAVE_XFmode | |
450 | case XFmode: | |
451 | #endif | |
452 | #ifdef HAVE_TFmode | |
453 | case TFmode: | |
454 | #endif | |
455 | return true; | |
456 | ||
457 | default: | |
458 | return false; | |
459 | } | |
460 | } | |
461 | ||
183dc110 | 462 | /* Make some target macros useable by target-independent code. */ |
463 | bool | |
464 | targhook_words_big_endian (void) | |
465 | { | |
466 | return !!WORDS_BIG_ENDIAN; | |
467 | } | |
468 | ||
469 | bool | |
470 | targhook_float_words_big_endian (void) | |
471 | { | |
472 | return !!FLOAT_WORDS_BIG_ENDIAN; | |
473 | } | |
474 | ||
4c866b9b | 475 | /* True if the target supports floating-point exceptions and rounding |
476 | modes. */ | |
477 | ||
478 | bool | |
479 | default_float_exceptions_rounding_supported_p (void) | |
480 | { | |
481 | #ifdef HAVE_adddf3 | |
482 | return HAVE_adddf3; | |
483 | #else | |
484 | return false; | |
485 | #endif | |
486 | } | |
487 | ||
1398cbfd | 488 | /* True if the target supports decimal floating point. */ |
489 | ||
490 | bool | |
491 | default_decimal_float_supported_p (void) | |
492 | { | |
493 | return ENABLE_DECIMAL_FLOAT; | |
494 | } | |
495 | ||
9421ebb9 | 496 | /* True if the target supports fixed-point arithmetic. */ |
497 | ||
498 | bool | |
499 | default_fixed_point_supported_p (void) | |
500 | { | |
501 | return ENABLE_FIXED_POINT; | |
502 | } | |
503 | ||
df9f2e40 | 504 | /* True if the target supports GNU indirect functions. */ |
505 | ||
506 | bool | |
507 | default_has_ifunc_p (void) | |
508 | { | |
509 | return HAVE_GNU_INDIRECT_FUNCTION; | |
510 | } | |
511 | ||
1606e68a | 512 | /* NULL if INSN insn is valid within a low-overhead loop, otherwise returns |
513 | an error message. | |
48e1416a | 514 | |
442e3cb9 | 515 | This function checks whether a given INSN is valid within a low-overhead |
1606e68a | 516 | loop. If INSN is invalid it returns the reason for that, otherwise it |
517 | returns NULL. A called function may clobber any special registers required | |
518 | for low-overhead looping. Additionally, some targets (eg, PPC) use the count | |
7dfa5ce3 | 519 | register for branch on table instructions. We reject the doloop pattern in |
520 | these cases. */ | |
521 | ||
1606e68a | 522 | const char * |
18282db0 | 523 | default_invalid_within_doloop (const rtx_insn *insn) |
7dfa5ce3 | 524 | { |
525 | if (CALL_P (insn)) | |
1606e68a | 526 | return "Function call in loop."; |
48e1416a | 527 | |
91f71fa3 | 528 | if (tablejump_p (insn, NULL, NULL) || computed_jump_p (insn)) |
1606e68a | 529 | return "Computed branch in the loop."; |
48e1416a | 530 | |
1606e68a | 531 | return NULL; |
7dfa5ce3 | 532 | } |
533 | ||
22c2f6bd | 534 | /* Mapping of builtin functions to vectorized variants. */ |
535 | ||
536 | tree | |
b6c464fe | 537 | default_builtin_vectorized_function (unsigned int, tree, tree) |
538 | { | |
539 | return NULL_TREE; | |
540 | } | |
541 | ||
542 | /* Mapping of target builtin functions to vectorized variants. */ | |
543 | ||
544 | tree | |
545 | default_builtin_md_vectorized_function (tree, tree, tree) | |
22c2f6bd | 546 | { |
547 | return NULL_TREE; | |
548 | } | |
549 | ||
9d8bf4aa | 550 | /* Vectorized conversion. */ |
551 | ||
552 | tree | |
d5b637fa | 553 | default_builtin_vectorized_conversion (unsigned int code ATTRIBUTE_UNUSED, |
011d9d16 | 554 | tree dest_type ATTRIBUTE_UNUSED, |
555 | tree src_type ATTRIBUTE_UNUSED) | |
9d8bf4aa | 556 | { |
557 | return NULL_TREE; | |
558 | } | |
559 | ||
559093aa | 560 | /* Default vectorizer cost model values. */ |
561 | ||
562 | int | |
0822b158 | 563 | default_builtin_vectorization_cost (enum vect_cost_for_stmt type_of_cost, |
d13adc77 | 564 | tree vectype, |
0822b158 | 565 | int misalign ATTRIBUTE_UNUSED) |
559093aa | 566 | { |
d13adc77 | 567 | unsigned elements; |
568 | ||
559093aa | 569 | switch (type_of_cost) |
570 | { | |
571 | case scalar_stmt: | |
572 | case scalar_load: | |
573 | case scalar_store: | |
574 | case vector_stmt: | |
575 | case vector_load: | |
576 | case vector_store: | |
577 | case vec_to_scalar: | |
578 | case scalar_to_vec: | |
579 | case cond_branch_not_taken: | |
580 | case vec_perm: | |
5df2530b | 581 | case vec_promote_demote: |
559093aa | 582 | return 1; |
583 | ||
584 | case unaligned_load: | |
0822b158 | 585 | case unaligned_store: |
559093aa | 586 | return 2; |
587 | ||
588 | case cond_branch_taken: | |
589 | return 3; | |
590 | ||
d13adc77 | 591 | case vec_construct: |
592 | elements = TYPE_VECTOR_SUBPARTS (vectype); | |
593 | return elements / 2 + 1; | |
594 | ||
559093aa | 595 | default: |
596 | gcc_unreachable (); | |
597 | } | |
598 | } | |
599 | ||
c3cc39c4 | 600 | /* Reciprocal. */ |
601 | ||
602 | tree | |
4cfd27a5 | 603 | default_builtin_reciprocal (tree) |
c3cc39c4 | 604 | { |
605 | return NULL_TREE; | |
606 | } | |
607 | ||
13f08ee7 | 608 | bool |
609 | hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false ( | |
39cba157 | 610 | cumulative_args_t ca ATTRIBUTE_UNUSED, |
3754d046 | 611 | machine_mode mode ATTRIBUTE_UNUSED, |
fb80456a | 612 | const_tree type ATTRIBUTE_UNUSED, bool named ATTRIBUTE_UNUSED) |
13f08ee7 | 613 | { |
614 | return false; | |
615 | } | |
616 | ||
617 | bool | |
618 | hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true ( | |
39cba157 | 619 | cumulative_args_t ca ATTRIBUTE_UNUSED, |
3754d046 | 620 | machine_mode mode ATTRIBUTE_UNUSED, |
fb80456a | 621 | const_tree type ATTRIBUTE_UNUSED, bool named ATTRIBUTE_UNUSED) |
13f08ee7 | 622 | { |
623 | return true; | |
624 | } | |
f054eb3c | 625 | |
626 | int | |
627 | hook_int_CUMULATIVE_ARGS_mode_tree_bool_0 ( | |
39cba157 | 628 | cumulative_args_t ca ATTRIBUTE_UNUSED, |
3754d046 | 629 | machine_mode mode ATTRIBUTE_UNUSED, |
f054eb3c | 630 | tree type ATTRIBUTE_UNUSED, bool named ATTRIBUTE_UNUSED) |
631 | { | |
632 | return 0; | |
633 | } | |
10fda9eb | 634 | |
f387af4f | 635 | void |
39cba157 | 636 | default_function_arg_advance (cumulative_args_t ca ATTRIBUTE_UNUSED, |
3754d046 | 637 | machine_mode mode ATTRIBUTE_UNUSED, |
f387af4f | 638 | const_tree type ATTRIBUTE_UNUSED, |
639 | bool named ATTRIBUTE_UNUSED) | |
640 | { | |
f387af4f | 641 | gcc_unreachable (); |
f387af4f | 642 | } |
643 | ||
644 | rtx | |
39cba157 | 645 | default_function_arg (cumulative_args_t ca ATTRIBUTE_UNUSED, |
3754d046 | 646 | machine_mode mode ATTRIBUTE_UNUSED, |
f387af4f | 647 | const_tree type ATTRIBUTE_UNUSED, |
648 | bool named ATTRIBUTE_UNUSED) | |
649 | { | |
f387af4f | 650 | gcc_unreachable (); |
f387af4f | 651 | } |
652 | ||
653 | rtx | |
39cba157 | 654 | default_function_incoming_arg (cumulative_args_t ca ATTRIBUTE_UNUSED, |
3754d046 | 655 | machine_mode mode ATTRIBUTE_UNUSED, |
f387af4f | 656 | const_tree type ATTRIBUTE_UNUSED, |
657 | bool named ATTRIBUTE_UNUSED) | |
658 | { | |
f387af4f | 659 | gcc_unreachable (); |
f387af4f | 660 | } |
661 | ||
bd99ba64 | 662 | unsigned int |
3754d046 | 663 | default_function_arg_boundary (machine_mode mode ATTRIBUTE_UNUSED, |
bd99ba64 | 664 | const_tree type ATTRIBUTE_UNUSED) |
665 | { | |
666 | return PARM_BOUNDARY; | |
667 | } | |
668 | ||
17bfc2bc | 669 | unsigned int |
3754d046 | 670 | default_function_arg_round_boundary (machine_mode mode ATTRIBUTE_UNUSED, |
17bfc2bc | 671 | const_tree type ATTRIBUTE_UNUSED) |
672 | { | |
673 | return PARM_BOUNDARY; | |
674 | } | |
675 | ||
48e1416a | 676 | void |
fcf2ad9f | 677 | hook_void_bitmap (bitmap regs ATTRIBUTE_UNUSED) |
678 | { | |
679 | } | |
680 | ||
10fda9eb | 681 | const char * |
682 | hook_invalid_arg_for_unprototyped_fn ( | |
a9f1838b | 683 | const_tree typelist ATTRIBUTE_UNUSED, |
684 | const_tree funcdecl ATTRIBUTE_UNUSED, | |
685 | const_tree val ATTRIBUTE_UNUSED) | |
10fda9eb | 686 | { |
687 | return NULL; | |
688 | } | |
f1a0edff | 689 | |
690 | /* Initialize the stack protection decls. */ | |
691 | ||
692 | /* Stack protection related decls living in libgcc. */ | |
693 | static GTY(()) tree stack_chk_guard_decl; | |
694 | ||
695 | tree | |
696 | default_stack_protect_guard (void) | |
697 | { | |
698 | tree t = stack_chk_guard_decl; | |
699 | ||
700 | if (t == NULL) | |
701 | { | |
b5d5f0d6 | 702 | rtx x; |
703 | ||
e60a6f7b | 704 | t = build_decl (UNKNOWN_LOCATION, |
705 | VAR_DECL, get_identifier ("__stack_chk_guard"), | |
f1a0edff | 706 | ptr_type_node); |
707 | TREE_STATIC (t) = 1; | |
708 | TREE_PUBLIC (t) = 1; | |
709 | DECL_EXTERNAL (t) = 1; | |
710 | TREE_USED (t) = 1; | |
711 | TREE_THIS_VOLATILE (t) = 1; | |
712 | DECL_ARTIFICIAL (t) = 1; | |
713 | DECL_IGNORED_P (t) = 1; | |
714 | ||
b5d5f0d6 | 715 | /* Do not share RTL as the declaration is visible outside of |
716 | current function. */ | |
717 | x = DECL_RTL (t); | |
718 | RTX_FLAG (x, used) = 1; | |
719 | ||
f1a0edff | 720 | stack_chk_guard_decl = t; |
721 | } | |
722 | ||
723 | return t; | |
724 | } | |
725 | ||
726 | static GTY(()) tree stack_chk_fail_decl; | |
727 | ||
48e1416a | 728 | tree |
f1a0edff | 729 | default_external_stack_protect_fail (void) |
730 | { | |
731 | tree t = stack_chk_fail_decl; | |
732 | ||
733 | if (t == NULL_TREE) | |
734 | { | |
735 | t = build_function_type_list (void_type_node, NULL_TREE); | |
e60a6f7b | 736 | t = build_decl (UNKNOWN_LOCATION, |
737 | FUNCTION_DECL, get_identifier ("__stack_chk_fail"), t); | |
f1a0edff | 738 | TREE_STATIC (t) = 1; |
739 | TREE_PUBLIC (t) = 1; | |
740 | DECL_EXTERNAL (t) = 1; | |
741 | TREE_USED (t) = 1; | |
742 | TREE_THIS_VOLATILE (t) = 1; | |
743 | TREE_NOTHROW (t) = 1; | |
744 | DECL_ARTIFICIAL (t) = 1; | |
745 | DECL_IGNORED_P (t) = 1; | |
f0f2eb24 | 746 | DECL_VISIBILITY (t) = VISIBILITY_DEFAULT; |
747 | DECL_VISIBILITY_SPECIFIED (t) = 1; | |
f1a0edff | 748 | |
749 | stack_chk_fail_decl = t; | |
750 | } | |
751 | ||
c2f47e15 | 752 | return build_call_expr (t, 0); |
f1a0edff | 753 | } |
754 | ||
755 | tree | |
756 | default_hidden_stack_protect_fail (void) | |
757 | { | |
c99ffbd2 | 758 | #ifndef HAVE_GAS_HIDDEN |
759 | return default_external_stack_protect_fail (); | |
760 | #else | |
f1a0edff | 761 | tree t = stack_chk_fail_decl; |
762 | ||
c99ffbd2 | 763 | if (!flag_pic) |
764 | return default_external_stack_protect_fail (); | |
765 | ||
766 | if (t == NULL_TREE) | |
f1a0edff | 767 | { |
768 | t = build_function_type_list (void_type_node, NULL_TREE); | |
e60a6f7b | 769 | t = build_decl (UNKNOWN_LOCATION, FUNCTION_DECL, |
f1a0edff | 770 | get_identifier ("__stack_chk_fail_local"), t); |
771 | TREE_STATIC (t) = 1; | |
772 | TREE_PUBLIC (t) = 1; | |
773 | DECL_EXTERNAL (t) = 1; | |
774 | TREE_USED (t) = 1; | |
775 | TREE_THIS_VOLATILE (t) = 1; | |
776 | TREE_NOTHROW (t) = 1; | |
777 | DECL_ARTIFICIAL (t) = 1; | |
778 | DECL_IGNORED_P (t) = 1; | |
779 | DECL_VISIBILITY_SPECIFIED (t) = 1; | |
780 | DECL_VISIBILITY (t) = VISIBILITY_HIDDEN; | |
781 | ||
782 | stack_chk_fail_decl = t; | |
783 | } | |
784 | ||
c2f47e15 | 785 | return build_call_expr (t, 0); |
c99ffbd2 | 786 | #endif |
f1a0edff | 787 | } |
788 | ||
280566a7 | 789 | bool |
a9f1838b | 790 | hook_bool_const_rtx_commutative_p (const_rtx x, |
791 | int outer_code ATTRIBUTE_UNUSED) | |
280566a7 | 792 | { |
793 | return COMMUTATIVE_P (x); | |
794 | } | |
795 | ||
46b3ff29 | 796 | rtx |
fb80456a | 797 | default_function_value (const_tree ret_type ATTRIBUTE_UNUSED, |
798 | const_tree fn_decl_or_type, | |
46b3ff29 | 799 | bool outgoing ATTRIBUTE_UNUSED) |
800 | { | |
801 | /* The old interface doesn't handle receiving the function type. */ | |
802 | if (fn_decl_or_type | |
803 | && !DECL_P (fn_decl_or_type)) | |
804 | fn_decl_or_type = NULL; | |
805 | ||
46b3ff29 | 806 | #ifdef FUNCTION_VALUE |
807 | return FUNCTION_VALUE (ret_type, fn_decl_or_type); | |
808 | #else | |
e5ce1073 | 809 | gcc_unreachable (); |
46b3ff29 | 810 | #endif |
811 | } | |
812 | ||
578d1295 | 813 | rtx |
3754d046 | 814 | default_libcall_value (machine_mode mode ATTRIBUTE_UNUSED, |
e5ce1073 | 815 | const_rtx fun ATTRIBUTE_UNUSED) |
578d1295 | 816 | { |
e5ce1073 | 817 | #ifdef LIBCALL_VALUE |
578d1295 | 818 | return LIBCALL_VALUE (mode); |
e5ce1073 | 819 | #else |
820 | gcc_unreachable (); | |
821 | #endif | |
578d1295 | 822 | } |
823 | ||
e1ce1485 | 824 | /* The default hook for TARGET_FUNCTION_VALUE_REGNO_P. */ |
825 | ||
826 | bool | |
827 | default_function_value_regno_p (const unsigned int regno ATTRIBUTE_UNUSED) | |
828 | { | |
829 | #ifdef FUNCTION_VALUE_REGNO_P | |
830 | return FUNCTION_VALUE_REGNO_P (regno); | |
831 | #else | |
832 | gcc_unreachable (); | |
833 | #endif | |
834 | } | |
835 | ||
567925e3 | 836 | rtx |
837 | default_internal_arg_pointer (void) | |
838 | { | |
839 | /* If the reg that the virtual arg pointer will be translated into is | |
840 | not a fixed reg or is the stack pointer, make a copy of the virtual | |
841 | arg pointer, and address parms via the copy. The frame pointer is | |
842 | considered fixed even though it is not marked as such. */ | |
843 | if ((ARG_POINTER_REGNUM == STACK_POINTER_REGNUM | |
844 | || ! (fixed_regs[ARG_POINTER_REGNUM] | |
845 | || ARG_POINTER_REGNUM == FRAME_POINTER_REGNUM))) | |
846 | return copy_to_reg (virtual_incoming_args_rtx); | |
847 | else | |
848 | return virtual_incoming_args_rtx; | |
849 | } | |
850 | ||
82c7907c | 851 | rtx |
8d54d6a0 | 852 | default_static_chain (const_tree ARG_UNUSED (fndecl_or_type), bool incoming_p) |
82c7907c | 853 | { |
82c7907c | 854 | if (incoming_p) |
855 | { | |
82c7907c | 856 | #ifdef STATIC_CHAIN_INCOMING_REGNUM |
857 | return gen_rtx_REG (Pmode, STATIC_CHAIN_INCOMING_REGNUM); | |
858 | #endif | |
859 | } | |
860 | ||
82c7907c | 861 | #ifdef STATIC_CHAIN_REGNUM |
862 | return gen_rtx_REG (Pmode, STATIC_CHAIN_REGNUM); | |
863 | #endif | |
864 | ||
974b8df6 | 865 | { |
866 | static bool issued_error; | |
867 | if (!issued_error) | |
868 | { | |
869 | issued_error = true; | |
870 | sorry ("nested functions not supported on this target"); | |
871 | } | |
872 | ||
873 | /* It really doesn't matter what we return here, so long at it | |
874 | doesn't cause the rest of the compiler to crash. */ | |
875 | return gen_rtx_MEM (Pmode, stack_pointer_rtx); | |
876 | } | |
82c7907c | 877 | } |
878 | ||
82c7907c | 879 | void |
880 | default_trampoline_init (rtx ARG_UNUSED (m_tramp), tree ARG_UNUSED (t_func), | |
881 | rtx ARG_UNUSED (r_chain)) | |
882 | { | |
82c7907c | 883 | sorry ("nested function trampolines not supported on this target"); |
82c7907c | 884 | } |
885 | ||
f5bc28da | 886 | int |
887 | default_return_pops_args (tree fundecl ATTRIBUTE_UNUSED, | |
888 | tree funtype ATTRIBUTE_UNUSED, | |
889 | int size ATTRIBUTE_UNUSED) | |
890 | { | |
891 | return 0; | |
892 | } | |
893 | ||
964229b7 | 894 | reg_class_t |
bc620c5c | 895 | default_branch_target_register_class (void) |
896 | { | |
897 | return NO_REGS; | |
898 | } | |
899 | ||
20c3c7fc | 900 | reg_class_t |
901 | default_ira_change_pseudo_allocno_class (int regno ATTRIBUTE_UNUSED, | |
902 | reg_class_t cl) | |
903 | { | |
904 | return cl; | |
905 | } | |
906 | ||
c6a6cdaa | 907 | extern bool |
908 | default_lra_p (void) | |
909 | { | |
910 | return false; | |
911 | } | |
912 | ||
913 | int | |
914 | default_register_priority (int hard_regno ATTRIBUTE_UNUSED) | |
915 | { | |
916 | return 0; | |
917 | } | |
918 | ||
4a2ca8f3 | 919 | extern bool |
920 | default_register_usage_leveling_p (void) | |
921 | { | |
922 | return false; | |
923 | } | |
924 | ||
c6a6cdaa | 925 | extern bool |
926 | default_different_addr_displacement_p (void) | |
927 | { | |
928 | return false; | |
929 | } | |
930 | ||
964229b7 | 931 | reg_class_t |
4d58fa46 | 932 | default_secondary_reload (bool in_p ATTRIBUTE_UNUSED, rtx x ATTRIBUTE_UNUSED, |
964229b7 | 933 | reg_class_t reload_class_i ATTRIBUTE_UNUSED, |
3754d046 | 934 | machine_mode reload_mode ATTRIBUTE_UNUSED, |
4d58fa46 | 935 | secondary_reload_info *sri) |
936 | { | |
c32319fc | 937 | enum reg_class rclass = NO_REGS; |
964229b7 | 938 | enum reg_class reload_class = (enum reg_class) reload_class_i; |
4d58fa46 | 939 | |
940 | if (sri->prev_sri && sri->prev_sri->t_icode != CODE_FOR_nothing) | |
941 | { | |
942 | sri->icode = sri->prev_sri->t_icode; | |
943 | return NO_REGS; | |
944 | } | |
945 | #ifdef SECONDARY_INPUT_RELOAD_CLASS | |
946 | if (in_p) | |
c32319fc | 947 | rclass = SECONDARY_INPUT_RELOAD_CLASS (reload_class, reload_mode, x); |
4d58fa46 | 948 | #endif |
949 | #ifdef SECONDARY_OUTPUT_RELOAD_CLASS | |
950 | if (! in_p) | |
c32319fc | 951 | rclass = SECONDARY_OUTPUT_RELOAD_CLASS (reload_class, reload_mode, x); |
4d58fa46 | 952 | #endif |
c32319fc | 953 | if (rclass != NO_REGS) |
4d58fa46 | 954 | { |
6b531606 | 955 | enum insn_code icode |
956 | = direct_optab_handler (in_p ? reload_in_optab : reload_out_optab, | |
957 | reload_mode); | |
4d58fa46 | 958 | |
959 | if (icode != CODE_FOR_nothing | |
39c56a89 | 960 | && !insn_operand_matches (icode, in_p, x)) |
4d58fa46 | 961 | icode = CODE_FOR_nothing; |
962 | else if (icode != CODE_FOR_nothing) | |
963 | { | |
964 | const char *insn_constraint, *scratch_constraint; | |
4d58fa46 | 965 | enum reg_class insn_class, scratch_class; |
966 | ||
967 | gcc_assert (insn_data[(int) icode].n_operands == 3); | |
968 | insn_constraint = insn_data[(int) icode].operand[!in_p].constraint; | |
969 | if (!*insn_constraint) | |
970 | insn_class = ALL_REGS; | |
971 | else | |
972 | { | |
973 | if (in_p) | |
974 | { | |
975 | gcc_assert (*insn_constraint == '='); | |
976 | insn_constraint++; | |
977 | } | |
69449463 | 978 | insn_class = (reg_class_for_constraint |
979 | (lookup_constraint (insn_constraint))); | |
4d58fa46 | 980 | gcc_assert (insn_class != NO_REGS); |
981 | } | |
982 | ||
983 | scratch_constraint = insn_data[(int) icode].operand[2].constraint; | |
eb7c310b | 984 | /* The scratch register's constraint must start with "=&", |
985 | except for an input reload, where only "=" is necessary, | |
986 | and where it might be beneficial to re-use registers from | |
987 | the input. */ | |
4d58fa46 | 988 | gcc_assert (scratch_constraint[0] == '=' |
eb7c310b | 989 | && (in_p || scratch_constraint[1] == '&')); |
990 | scratch_constraint++; | |
991 | if (*scratch_constraint == '&') | |
992 | scratch_constraint++; | |
69449463 | 993 | scratch_class = (reg_class_for_constraint |
994 | (lookup_constraint (scratch_constraint))); | |
4d58fa46 | 995 | |
996 | if (reg_class_subset_p (reload_class, insn_class)) | |
997 | { | |
c32319fc | 998 | gcc_assert (scratch_class == rclass); |
999 | rclass = NO_REGS; | |
4d58fa46 | 1000 | } |
1001 | else | |
c32319fc | 1002 | rclass = insn_class; |
4d58fa46 | 1003 | |
1004 | } | |
c32319fc | 1005 | if (rclass == NO_REGS) |
4d58fa46 | 1006 | sri->icode = icode; |
1007 | else | |
1008 | sri->t_icode = icode; | |
1009 | } | |
c32319fc | 1010 | return rclass; |
4d58fa46 | 1011 | } |
1012 | ||
4e151b05 | 1013 | /* By default, if flag_pic is true, then neither local nor global relocs |
1014 | should be placed in readonly memory. */ | |
1015 | ||
1016 | int | |
1017 | default_reloc_rw_mask (void) | |
1018 | { | |
1019 | return flag_pic ? 3 : 0; | |
1020 | } | |
1021 | ||
97a424bc | 1022 | /* By default, do no modification. */ |
1023 | tree default_mangle_decl_assembler_name (tree decl ATTRIBUTE_UNUSED, | |
1024 | tree id) | |
1025 | { | |
1026 | return id; | |
1027 | } | |
1028 | ||
482a44fa | 1029 | /* Default to natural alignment for vector types. */ |
1030 | HOST_WIDE_INT | |
1031 | default_vector_alignment (const_tree type) | |
1032 | { | |
e913b5cd | 1033 | return tree_to_shwi (TYPE_SIZE (type)); |
482a44fa | 1034 | } |
1035 | ||
5a2538e1 | 1036 | bool |
a9f1838b | 1037 | default_builtin_vector_alignment_reachable (const_tree type, bool is_packed) |
5a2538e1 | 1038 | { |
1039 | if (is_packed) | |
1040 | return false; | |
1041 | ||
1042 | /* Assuming that types whose size is > pointer-size are not guaranteed to be | |
1043 | naturally aligned. */ | |
1044 | if (tree_int_cst_compare (TYPE_SIZE (type), bitsize_int (POINTER_SIZE)) > 0) | |
1045 | return false; | |
1046 | ||
1047 | /* Assuming that types whose size is <= pointer-size | |
1048 | are naturally aligned. */ | |
1049 | return true; | |
1050 | } | |
1051 | ||
c6b19c5f | 1052 | /* By default, assume that a target supports any factor of misalignment |
48e1416a | 1053 | memory access if it supports movmisalign patten. |
c6b19c5f | 1054 | is_packed is true if the memory access is defined in a packed struct. */ |
1055 | bool | |
3754d046 | 1056 | default_builtin_support_vector_misalignment (machine_mode mode, |
c6b19c5f | 1057 | const_tree type |
1058 | ATTRIBUTE_UNUSED, | |
1059 | int misalignment | |
1060 | ATTRIBUTE_UNUSED, | |
1061 | bool is_packed | |
1062 | ATTRIBUTE_UNUSED) | |
1063 | { | |
d6bf3b14 | 1064 | if (optab_handler (movmisalign_optab, mode) != CODE_FOR_nothing) |
c6b19c5f | 1065 | return true; |
1066 | return false; | |
1067 | } | |
1068 | ||
2101edf2 | 1069 | /* By default, only attempt to parallelize bitwise operations, and |
1070 | possibly adds/subtracts using bit-twiddling. */ | |
1071 | ||
3754d046 | 1072 | machine_mode |
1073 | default_preferred_simd_mode (machine_mode mode ATTRIBUTE_UNUSED) | |
2101edf2 | 1074 | { |
b24d851f | 1075 | return word_mode; |
2101edf2 | 1076 | } |
1077 | ||
421b11b1 | 1078 | /* By default only the size derived from the preferred vector mode |
1079 | is tried. */ | |
1080 | ||
1081 | unsigned int | |
1082 | default_autovectorize_vector_sizes (void) | |
1083 | { | |
1084 | return 0; | |
1085 | } | |
1086 | ||
1f137e6d | 1087 | /* By defaults a vector of integers is used as a mask. */ |
1088 | ||
1089 | machine_mode | |
1090 | default_get_mask_mode (unsigned nunits, unsigned vector_size) | |
1091 | { | |
1092 | unsigned elem_size = vector_size / nunits; | |
1093 | machine_mode elem_mode | |
1094 | = smallest_mode_for_size (elem_size * BITS_PER_UNIT, MODE_INT); | |
562458b4 | 1095 | machine_mode vector_mode; |
1f137e6d | 1096 | |
1097 | gcc_assert (elem_size * nunits == vector_size); | |
1098 | ||
562458b4 | 1099 | vector_mode = mode_for_vector (elem_mode, nunits); |
810c7bcc | 1100 | if (!VECTOR_MODE_P (vector_mode) |
1101 | || !targetm.vector_mode_supported_p (vector_mode)) | |
562458b4 | 1102 | vector_mode = BLKmode; |
1103 | ||
1104 | return vector_mode; | |
1f137e6d | 1105 | } |
1106 | ||
f97dec81 | 1107 | /* By default, the cost model accumulates three separate costs (prologue, |
1108 | loop body, and epilogue) for a vectorized loop or block. So allocate an | |
1109 | array of three unsigned ints, set it to zero, and return its address. */ | |
4db2b577 | 1110 | |
1111 | void * | |
1112 | default_init_cost (struct loop *loop_info ATTRIBUTE_UNUSED) | |
1113 | { | |
f97dec81 | 1114 | unsigned *cost = XNEWVEC (unsigned, 3); |
1115 | cost[vect_prologue] = cost[vect_body] = cost[vect_epilogue] = 0; | |
4db2b577 | 1116 | return cost; |
1117 | } | |
1118 | ||
1119 | /* By default, the cost model looks up the cost of the given statement | |
1120 | kind and mode, multiplies it by the occurrence count, accumulates | |
f97dec81 | 1121 | it into the cost specified by WHERE, and returns the cost added. */ |
4db2b577 | 1122 | |
1123 | unsigned | |
1124 | default_add_stmt_cost (void *data, int count, enum vect_cost_for_stmt kind, | |
f97dec81 | 1125 | struct _stmt_vec_info *stmt_info, int misalign, |
1126 | enum vect_cost_model_location where) | |
4db2b577 | 1127 | { |
1128 | unsigned *cost = (unsigned *) data; | |
1129 | unsigned retval = 0; | |
1130 | ||
1dbf9bd1 | 1131 | tree vectype = stmt_info ? stmt_vectype (stmt_info) : NULL_TREE; |
c820693e | 1132 | int stmt_cost = targetm.vectorize.builtin_vectorization_cost (kind, vectype, |
1133 | misalign); | |
1dbf9bd1 | 1134 | /* Statements in an inner loop relative to the loop being |
1135 | vectorized are weighted more heavily. The value here is | |
1136 | arbitrary and could potentially be improved with analysis. */ | |
1137 | if (where == vect_body && stmt_info && stmt_in_inner_loop_p (stmt_info)) | |
1138 | count *= 50; /* FIXME. */ | |
1139 | ||
1140 | retval = (unsigned) (count * stmt_cost); | |
1141 | cost[where] += retval; | |
4db2b577 | 1142 | |
1143 | return retval; | |
1144 | } | |
1145 | ||
f97dec81 | 1146 | /* By default, the cost model just returns the accumulated costs. */ |
4db2b577 | 1147 | |
f97dec81 | 1148 | void |
1149 | default_finish_cost (void *data, unsigned *prologue_cost, | |
1150 | unsigned *body_cost, unsigned *epilogue_cost) | |
4db2b577 | 1151 | { |
f97dec81 | 1152 | unsigned *cost = (unsigned *) data; |
1153 | *prologue_cost = cost[vect_prologue]; | |
1154 | *body_cost = cost[vect_body]; | |
1155 | *epilogue_cost = cost[vect_epilogue]; | |
4db2b577 | 1156 | } |
1157 | ||
1158 | /* Free the cost data. */ | |
1159 | ||
1160 | void | |
1161 | default_destroy_cost_data (void *data) | |
1162 | { | |
1163 | free (data); | |
1164 | } | |
1165 | ||
98155838 | 1166 | /* Determine whether or not a pointer mode is valid. Assume defaults |
1167 | of ptr_mode or Pmode - can be overridden. */ | |
1168 | bool | |
3754d046 | 1169 | default_valid_pointer_mode (machine_mode mode) |
98155838 | 1170 | { |
1171 | return (mode == ptr_mode || mode == Pmode); | |
1172 | } | |
1173 | ||
be97d4b6 | 1174 | /* Determine whether the memory reference specified by REF may alias |
1175 | the C libraries errno location. */ | |
1176 | bool | |
1177 | default_ref_may_alias_errno (ao_ref *ref) | |
1178 | { | |
1179 | tree base = ao_ref_base (ref); | |
1180 | /* The default implementation assumes the errno location is | |
1181 | a declaration of type int or is always accessed via a | |
1182 | pointer to int. We assume that accesses to errno are | |
1183 | not deliberately obfuscated (even in conforming ways). */ | |
1184 | if (TYPE_UNSIGNED (TREE_TYPE (base)) | |
1185 | || TYPE_MODE (TREE_TYPE (base)) != TYPE_MODE (integer_type_node)) | |
1186 | return false; | |
1187 | /* The default implementation assumes an errno location | |
1188 | declaration is never defined in the current compilation unit. */ | |
1189 | if (DECL_P (base) | |
1190 | && !TREE_STATIC (base)) | |
1191 | return true; | |
1192 | else if (TREE_CODE (base) == MEM_REF | |
1193 | && TREE_CODE (TREE_OPERAND (base, 0)) == SSA_NAME) | |
1194 | { | |
1195 | struct ptr_info_def *pi = SSA_NAME_PTR_INFO (TREE_OPERAND (base, 0)); | |
1196 | return !pi || pi->pt.anything || pi->pt.nonlocal; | |
1197 | } | |
1198 | return false; | |
1199 | } | |
1200 | ||
d06612ae | 1201 | /* Return the mode for a pointer to a given ADDRSPACE, |
1202 | defaulting to ptr_mode for all address spaces. */ | |
98155838 | 1203 | |
3754d046 | 1204 | machine_mode |
98155838 | 1205 | default_addr_space_pointer_mode (addr_space_t addrspace ATTRIBUTE_UNUSED) |
1206 | { | |
98155838 | 1207 | return ptr_mode; |
1208 | } | |
1209 | ||
d06612ae | 1210 | /* Return the mode for an address in a given ADDRSPACE, |
1211 | defaulting to Pmode for all address spaces. */ | |
98155838 | 1212 | |
3754d046 | 1213 | machine_mode |
98155838 | 1214 | default_addr_space_address_mode (addr_space_t addrspace ATTRIBUTE_UNUSED) |
1215 | { | |
98155838 | 1216 | return Pmode; |
1217 | } | |
1218 | ||
d06612ae | 1219 | /* Named address space version of valid_pointer_mode. |
1220 | To match the above, the same modes apply to all address spaces. */ | |
98155838 | 1221 | |
1222 | bool | |
d06612ae | 1223 | default_addr_space_valid_pointer_mode (machine_mode mode, |
1224 | addr_space_t as ATTRIBUTE_UNUSED) | |
98155838 | 1225 | { |
98155838 | 1226 | return targetm.valid_pointer_mode (mode); |
1227 | } | |
1228 | ||
1229 | /* Some places still assume that all pointer or address modes are the | |
1230 | standard Pmode and ptr_mode. These optimizations become invalid if | |
1231 | the target actually supports multiple different modes. For now, | |
1232 | we disable such optimizations on such targets, using this function. */ | |
1233 | ||
1234 | bool | |
1235 | target_default_pointer_address_modes_p (void) | |
1236 | { | |
1237 | if (targetm.addr_space.address_mode != default_addr_space_address_mode) | |
1238 | return false; | |
1239 | if (targetm.addr_space.pointer_mode != default_addr_space_pointer_mode) | |
1240 | return false; | |
1241 | ||
1242 | return true; | |
1243 | } | |
1244 | ||
d06612ae | 1245 | /* Named address space version of legitimate_address_p. |
1246 | By default, all address spaces have the same form. */ | |
bd1a81f7 | 1247 | |
1248 | bool | |
3754d046 | 1249 | default_addr_space_legitimate_address_p (machine_mode mode, rtx mem, |
d06612ae | 1250 | bool strict, |
1251 | addr_space_t as ATTRIBUTE_UNUSED) | |
bd1a81f7 | 1252 | { |
bd1a81f7 | 1253 | return targetm.legitimate_address_p (mode, mem, strict); |
1254 | } | |
1255 | ||
d06612ae | 1256 | /* Named address space version of LEGITIMIZE_ADDRESS. |
1257 | By default, all address spaces have the same form. */ | |
bd1a81f7 | 1258 | |
1259 | rtx | |
d06612ae | 1260 | default_addr_space_legitimize_address (rtx x, rtx oldx, machine_mode mode, |
1261 | addr_space_t as ATTRIBUTE_UNUSED) | |
bd1a81f7 | 1262 | { |
bd1a81f7 | 1263 | return targetm.legitimize_address (x, oldx, mode); |
1264 | } | |
1265 | ||
1266 | /* The default hook for determining if one named address space is a subset of | |
1267 | another and to return which address space to use as the common address | |
1268 | space. */ | |
1269 | ||
1270 | bool | |
1271 | default_addr_space_subset_p (addr_space_t subset, addr_space_t superset) | |
1272 | { | |
1273 | return (subset == superset); | |
1274 | } | |
1275 | ||
9cb89654 | 1276 | /* The default hook for determining if 0 within a named address |
1277 | space is a valid address. */ | |
1278 | ||
1279 | bool | |
1280 | default_addr_space_zero_address_valid (addr_space_t as ATTRIBUTE_UNUSED) | |
1281 | { | |
1282 | return false; | |
1283 | } | |
1284 | ||
2e7a553a | 1285 | /* The default hook for debugging the address space is to return the |
1286 | address space number to indicate DW_AT_address_class. */ | |
1287 | int | |
1288 | default_addr_space_debug (addr_space_t as) | |
1289 | { | |
1290 | return as; | |
1291 | } | |
1292 | ||
bd1a81f7 | 1293 | /* The default hook for TARGET_ADDR_SPACE_CONVERT. This hook should never be |
1294 | called for targets with only a generic address space. */ | |
1295 | ||
1296 | rtx | |
1297 | default_addr_space_convert (rtx op ATTRIBUTE_UNUSED, | |
1298 | tree from_type ATTRIBUTE_UNUSED, | |
1299 | tree to_type ATTRIBUTE_UNUSED) | |
1300 | { | |
1301 | gcc_unreachable (); | |
1302 | } | |
1303 | ||
747bf50d | 1304 | bool |
1305 | default_hard_regno_scratch_ok (unsigned int regno ATTRIBUTE_UNUSED) | |
1306 | { | |
1307 | return true; | |
1308 | } | |
1309 | ||
98e22cb6 | 1310 | /* The default implementation of TARGET_MODE_DEPENDENT_ADDRESS_P. */ |
1311 | ||
1312 | bool | |
4e27ffd0 | 1313 | default_mode_dependent_address_p (const_rtx addr ATTRIBUTE_UNUSED, |
1314 | addr_space_t addrspace ATTRIBUTE_UNUSED) | |
98e22cb6 | 1315 | { |
98e22cb6 | 1316 | return false; |
98e22cb6 | 1317 | } |
1318 | ||
46f8e3b0 | 1319 | bool |
1320 | default_target_option_valid_attribute_p (tree ARG_UNUSED (fndecl), | |
1321 | tree ARG_UNUSED (name), | |
1322 | tree ARG_UNUSED (args), | |
1323 | int ARG_UNUSED (flags)) | |
1324 | { | |
24470055 | 1325 | warning (OPT_Wattributes, |
1326 | "target attribute is not supported on this machine"); | |
1327 | ||
1328 | return false; | |
1329 | } | |
1330 | ||
1331 | bool | |
1332 | default_target_option_pragma_parse (tree ARG_UNUSED (args), | |
1333 | tree ARG_UNUSED (pop_target)) | |
1334 | { | |
0cb9d971 | 1335 | /* If args is NULL the caller is handle_pragma_pop_options (). In that case, |
1336 | emit no warning because "#pragma GCC pop_target" is valid on targets that | |
1337 | do not have the "target" pragma. */ | |
1338 | if (args) | |
1339 | warning (OPT_Wpragmas, | |
1340 | "#pragma GCC target is not supported for this machine"); | |
24470055 | 1341 | |
46f8e3b0 | 1342 | return false; |
1343 | } | |
1344 | ||
1345 | bool | |
7c88e513 | 1346 | default_target_can_inline_p (tree caller, tree callee) |
46f8e3b0 | 1347 | { |
1348 | bool ret = false; | |
1349 | tree callee_opts = DECL_FUNCTION_SPECIFIC_TARGET (callee); | |
1350 | tree caller_opts = DECL_FUNCTION_SPECIFIC_TARGET (caller); | |
1351 | ||
1352 | /* If callee has no option attributes, then it is ok to inline */ | |
1353 | if (!callee_opts) | |
1354 | ret = true; | |
1355 | ||
1356 | /* If caller has no option attributes, but callee does then it is not ok to | |
1357 | inline */ | |
1358 | else if (!caller_opts) | |
1359 | ret = false; | |
1360 | ||
851d9296 | 1361 | /* If both caller and callee have attributes, assume that if the |
1362 | pointer is different, the two functions have different target | |
1363 | options since build_target_option_node uses a hash table for the | |
1364 | options. */ | |
46f8e3b0 | 1365 | else |
1366 | ret = (callee_opts == caller_opts); | |
1367 | ||
1368 | return ret; | |
1369 | } | |
1370 | ||
906bb5c3 | 1371 | /* If the machine does not have a case insn that compares the bounds, |
1372 | this means extra overhead for dispatch tables, which raises the | |
1373 | threshold for using them. */ | |
1374 | ||
bfb10994 | 1375 | unsigned int |
1376 | default_case_values_threshold (void) | |
906bb5c3 | 1377 | { |
9a1bd12f | 1378 | return (targetm.have_casesi () ? 4 : 5); |
906bb5c3 | 1379 | } |
1380 | ||
751d3ba7 | 1381 | bool |
1382 | default_have_conditional_execution (void) | |
1383 | { | |
751d3ba7 | 1384 | return HAVE_conditional_execution; |
751d3ba7 | 1385 | } |
1386 | ||
f7715905 | 1387 | /* By default we assume that c99 functions are present at the runtime, |
1388 | but sincos is not. */ | |
1389 | bool | |
1390 | default_libc_has_function (enum function_class fn_class) | |
1391 | { | |
1392 | if (fn_class == function_c94 | |
1393 | || fn_class == function_c99_misc | |
1394 | || fn_class == function_c99_math_complex) | |
1395 | return true; | |
1396 | ||
1397 | return false; | |
1398 | } | |
1399 | ||
1400 | bool | |
1401 | gnu_libc_has_function (enum function_class fn_class ATTRIBUTE_UNUSED) | |
1402 | { | |
1403 | return true; | |
1404 | } | |
1405 | ||
1406 | bool | |
1407 | no_c99_libc_has_function (enum function_class fn_class ATTRIBUTE_UNUSED) | |
1408 | { | |
1409 | return false; | |
1410 | } | |
1411 | ||
4c0315d0 | 1412 | tree |
1413 | default_builtin_tm_load_store (tree ARG_UNUSED (type)) | |
1414 | { | |
1415 | return NULL_TREE; | |
1416 | } | |
1417 | ||
251a613e | 1418 | /* Compute cost of moving registers to/from memory. */ |
1419 | ||
1420 | int | |
3754d046 | 1421 | default_memory_move_cost (machine_mode mode ATTRIBUTE_UNUSED, |
964229b7 | 1422 | reg_class_t rclass ATTRIBUTE_UNUSED, |
251a613e | 1423 | bool in ATTRIBUTE_UNUSED) |
1424 | { | |
1425 | #ifndef MEMORY_MOVE_COST | |
964229b7 | 1426 | return (4 + memory_move_secondary_cost (mode, (enum reg_class) rclass, in)); |
251a613e | 1427 | #else |
964229b7 | 1428 | return MEMORY_MOVE_COST (mode, (enum reg_class) rclass, in); |
251a613e | 1429 | #endif |
1430 | } | |
1431 | ||
e6078fbb | 1432 | /* Compute cost of moving data from a register of class FROM to one of |
1433 | TO, using MODE. */ | |
1434 | ||
1435 | int | |
3754d046 | 1436 | default_register_move_cost (machine_mode mode ATTRIBUTE_UNUSED, |
964229b7 | 1437 | reg_class_t from ATTRIBUTE_UNUSED, |
1438 | reg_class_t to ATTRIBUTE_UNUSED) | |
e6078fbb | 1439 | { |
1440 | #ifndef REGISTER_MOVE_COST | |
1441 | return 2; | |
1442 | #else | |
964229b7 | 1443 | return REGISTER_MOVE_COST (mode, (enum reg_class) from, (enum reg_class) to); |
e6078fbb | 1444 | #endif |
1445 | } | |
1446 | ||
0ec3791c | 1447 | /* For hooks which use the MOVE_RATIO macro, this gives the legacy default |
1448 | behaviour. SPEED_P is true if we are compiling for speed. */ | |
1449 | ||
67622758 | 1450 | unsigned int |
0ec3791c | 1451 | get_move_ratio (bool speed_p ATTRIBUTE_UNUSED) |
1452 | { | |
1453 | unsigned int move_ratio; | |
1454 | #ifdef MOVE_RATIO | |
1455 | move_ratio = (unsigned int) MOVE_RATIO (speed_p); | |
1456 | #else | |
1457 | #if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti) | |
1458 | move_ratio = 2; | |
1459 | #else /* No movmem patterns, pick a default. */ | |
1460 | move_ratio = ((speed_p) ? 15 : 3); | |
1461 | #endif | |
1462 | #endif | |
1463 | return move_ratio; | |
1464 | } | |
1465 | ||
1466 | /* Return TRUE if the move_by_pieces/set_by_pieces infrastructure should be | |
1467 | used; return FALSE if the movmem/setmem optab should be expanded, or | |
1468 | a call to memcpy emitted. */ | |
1469 | ||
1470 | bool | |
89da42b6 | 1471 | default_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT size, |
0ec3791c | 1472 | unsigned int alignment, |
1473 | enum by_pieces_operation op, | |
1474 | bool speed_p) | |
1475 | { | |
1476 | unsigned int max_size = 0; | |
1477 | unsigned int ratio = 0; | |
1478 | ||
1479 | switch (op) | |
1480 | { | |
1481 | case CLEAR_BY_PIECES: | |
1482 | max_size = STORE_MAX_PIECES; | |
1483 | ratio = CLEAR_RATIO (speed_p); | |
1484 | break; | |
1485 | case MOVE_BY_PIECES: | |
1486 | max_size = MOVE_MAX_PIECES; | |
1487 | ratio = get_move_ratio (speed_p); | |
1488 | break; | |
1489 | case SET_BY_PIECES: | |
1490 | max_size = STORE_MAX_PIECES; | |
1491 | ratio = SET_RATIO (speed_p); | |
1492 | break; | |
1493 | case STORE_BY_PIECES: | |
1494 | max_size = STORE_MAX_PIECES; | |
1495 | ratio = get_move_ratio (speed_p); | |
1496 | break; | |
1497 | } | |
1498 | ||
1499 | return move_by_pieces_ninsns (size, alignment, max_size + 1) < ratio; | |
1500 | } | |
1501 | ||
8637d6a2 | 1502 | bool |
1503 | default_profile_before_prologue (void) | |
1504 | { | |
1505 | #ifdef PROFILE_BEFORE_PROLOGUE | |
1506 | return true; | |
1507 | #else | |
1508 | return false; | |
1509 | #endif | |
1510 | } | |
1511 | ||
09a17585 | 1512 | /* The default implementation of TARGET_PREFERRED_RELOAD_CLASS. */ |
1513 | ||
1514 | reg_class_t | |
1515 | default_preferred_reload_class (rtx x ATTRIBUTE_UNUSED, | |
1516 | reg_class_t rclass) | |
1517 | { | |
1518 | #ifdef PREFERRED_RELOAD_CLASS | |
1519 | return (reg_class_t) PREFERRED_RELOAD_CLASS (x, (enum reg_class) rclass); | |
1520 | #else | |
1521 | return rclass; | |
1522 | #endif | |
1523 | } | |
1524 | ||
71db0d8b | 1525 | /* The default implementation of TARGET_OUTPUT_PREFERRED_RELOAD_CLASS. */ |
1526 | ||
1527 | reg_class_t | |
1528 | default_preferred_output_reload_class (rtx x ATTRIBUTE_UNUSED, | |
1529 | reg_class_t rclass) | |
1530 | { | |
71db0d8b | 1531 | return rclass; |
71db0d8b | 1532 | } |
1533 | ||
d78118a3 | 1534 | /* The default implementation of TARGET_PREFERRED_RENAME_CLASS. */ |
1535 | reg_class_t | |
1536 | default_preferred_rename_class (reg_class_t rclass ATTRIBUTE_UNUSED) | |
1537 | { | |
1538 | return NO_REGS; | |
1539 | } | |
1540 | ||
24dd0668 | 1541 | /* The default implementation of TARGET_CLASS_LIKELY_SPILLED_P. */ |
1542 | ||
1543 | bool | |
1544 | default_class_likely_spilled_p (reg_class_t rclass) | |
1545 | { | |
24dd0668 | 1546 | return (reg_class_size[(int) rclass] == 1); |
24dd0668 | 1547 | } |
1548 | ||
d3ba22dc | 1549 | /* The default implementation of TARGET_CLASS_MAX_NREGS. */ |
1550 | ||
1551 | unsigned char | |
1552 | default_class_max_nregs (reg_class_t rclass ATTRIBUTE_UNUSED, | |
3754d046 | 1553 | machine_mode mode ATTRIBUTE_UNUSED) |
d3ba22dc | 1554 | { |
1555 | #ifdef CLASS_MAX_NREGS | |
1556 | return (unsigned char) CLASS_MAX_NREGS ((enum reg_class) rclass, mode); | |
1557 | #else | |
1558 | return ((GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) / UNITS_PER_WORD); | |
1559 | #endif | |
1560 | } | |
1561 | ||
cc7d6aed | 1562 | /* Determine the debugging unwind mechanism for the target. */ |
1563 | ||
1564 | enum unwind_info_type | |
1565 | default_debug_unwind_info (void) | |
1566 | { | |
1567 | /* If the target wants to force the use of dwarf2 unwind info, let it. */ | |
1568 | /* ??? Change all users to the hook, then poison this. */ | |
1569 | #ifdef DWARF2_FRAME_INFO | |
1570 | if (DWARF2_FRAME_INFO) | |
1571 | return UI_DWARF2; | |
1572 | #endif | |
1573 | ||
1574 | /* Otherwise, only turn it on if dwarf2 debugging is enabled. */ | |
1575 | #ifdef DWARF2_DEBUGGING_INFO | |
1576 | if (write_symbols == DWARF2_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) | |
1577 | return UI_DWARF2; | |
1578 | #endif | |
1579 | ||
1580 | return UI_NONE; | |
1581 | } | |
1582 | ||
d626297e | 1583 | /* Determine the correct mode for a Dwarf frame register that represents |
1584 | register REGNO. */ | |
1585 | ||
3754d046 | 1586 | machine_mode |
d626297e | 1587 | default_dwarf_frame_reg_mode (int regno) |
1588 | { | |
3754d046 | 1589 | machine_mode save_mode = reg_raw_mode[regno]; |
d626297e | 1590 | |
1591 | if (HARD_REGNO_CALL_PART_CLOBBERED (regno, save_mode)) | |
1592 | save_mode = choose_hard_reg_mode (regno, 1, true); | |
1593 | return save_mode; | |
1594 | } | |
1595 | ||
4bac51c9 | 1596 | /* To be used by targets where reg_raw_mode doesn't return the right |
1597 | mode for registers used in apply_builtin_return and apply_builtin_arg. */ | |
1598 | ||
3754d046 | 1599 | machine_mode |
9af5ce0c | 1600 | default_get_reg_raw_mode (int regno) |
4bac51c9 | 1601 | { |
1602 | return reg_raw_mode[regno]; | |
1603 | } | |
1604 | ||
d44f2f7c | 1605 | /* Return true if a leaf function should stay leaf even with profiling |
1606 | enabled. */ | |
1607 | ||
1608 | bool | |
1609 | default_keep_leaf_when_profiled () | |
1610 | { | |
1611 | return false; | |
1612 | } | |
1613 | ||
0e763b2a | 1614 | /* Return true if the state of option OPTION should be stored in PCH files |
1615 | and checked by default_pch_valid_p. Store the option's current state | |
1616 | in STATE if so. */ | |
1617 | ||
1618 | static inline bool | |
1619 | option_affects_pch_p (int option, struct cl_option_state *state) | |
1620 | { | |
1621 | if ((cl_options[option].flags & CL_TARGET) == 0) | |
1622 | return false; | |
d8f2baf5 | 1623 | if ((cl_options[option].flags & CL_PCH_IGNORE) != 0) |
1624 | return false; | |
0e763b2a | 1625 | if (option_flag_var (option, &global_options) == &target_flags) |
1626 | if (targetm.check_pch_target_flags) | |
1627 | return false; | |
1628 | return get_option_state (&global_options, option, state); | |
1629 | } | |
1630 | ||
1631 | /* Default version of get_pch_validity. | |
1632 | By default, every flag difference is fatal; that will be mostly right for | |
1633 | most targets, but completely right for very few. */ | |
1634 | ||
1635 | void * | |
1636 | default_get_pch_validity (size_t *sz) | |
1637 | { | |
1638 | struct cl_option_state state; | |
1639 | size_t i; | |
1640 | char *result, *r; | |
1641 | ||
1642 | *sz = 2; | |
1643 | if (targetm.check_pch_target_flags) | |
1644 | *sz += sizeof (target_flags); | |
1645 | for (i = 0; i < cl_options_count; i++) | |
1646 | if (option_affects_pch_p (i, &state)) | |
1647 | *sz += state.size; | |
1648 | ||
1649 | result = r = XNEWVEC (char, *sz); | |
1650 | r[0] = flag_pic; | |
1651 | r[1] = flag_pie; | |
1652 | r += 2; | |
1653 | if (targetm.check_pch_target_flags) | |
1654 | { | |
1655 | memcpy (r, &target_flags, sizeof (target_flags)); | |
1656 | r += sizeof (target_flags); | |
1657 | } | |
1658 | ||
1659 | for (i = 0; i < cl_options_count; i++) | |
1660 | if (option_affects_pch_p (i, &state)) | |
1661 | { | |
1662 | memcpy (r, state.data, state.size); | |
1663 | r += state.size; | |
1664 | } | |
1665 | ||
1666 | return result; | |
1667 | } | |
1668 | ||
1669 | /* Return a message which says that a PCH file was created with a different | |
1670 | setting of OPTION. */ | |
1671 | ||
1672 | static const char * | |
1673 | pch_option_mismatch (const char *option) | |
1674 | { | |
5e9ac72e | 1675 | return xasprintf (_("created and used with differing settings of '%s'"), |
1676 | option); | |
0e763b2a | 1677 | } |
1678 | ||
1679 | /* Default version of pch_valid_p. */ | |
1680 | ||
1681 | const char * | |
1682 | default_pch_valid_p (const void *data_p, size_t len) | |
1683 | { | |
1684 | struct cl_option_state state; | |
1685 | const char *data = (const char *)data_p; | |
1686 | size_t i; | |
1687 | ||
1688 | /* -fpic and -fpie also usually make a PCH invalid. */ | |
1689 | if (data[0] != flag_pic) | |
1690 | return _("created and used with different settings of -fpic"); | |
1691 | if (data[1] != flag_pie) | |
1692 | return _("created and used with different settings of -fpie"); | |
1693 | data += 2; | |
1694 | ||
1695 | /* Check target_flags. */ | |
1696 | if (targetm.check_pch_target_flags) | |
1697 | { | |
1698 | int tf; | |
1699 | const char *r; | |
1700 | ||
1701 | memcpy (&tf, data, sizeof (target_flags)); | |
1702 | data += sizeof (target_flags); | |
1703 | len -= sizeof (target_flags); | |
1704 | r = targetm.check_pch_target_flags (tf); | |
1705 | if (r != NULL) | |
1706 | return r; | |
1707 | } | |
1708 | ||
1709 | for (i = 0; i < cl_options_count; i++) | |
1710 | if (option_affects_pch_p (i, &state)) | |
1711 | { | |
1712 | if (memcmp (data, state.data, state.size) != 0) | |
1713 | return pch_option_mismatch (cl_options[i].opt_text); | |
1714 | data += state.size; | |
1715 | len -= state.size; | |
1716 | } | |
1717 | ||
1718 | return NULL; | |
1719 | } | |
1720 | ||
17f446a0 | 1721 | /* Default version of cstore_mode. */ |
1722 | ||
3754d046 | 1723 | machine_mode |
17f446a0 | 1724 | default_cstore_mode (enum insn_code icode) |
1725 | { | |
1726 | return insn_data[(int) icode].operand[0].mode; | |
1727 | } | |
1728 | ||
f91ed644 | 1729 | /* Default version of member_type_forces_blk. */ |
1730 | ||
1731 | bool | |
3754d046 | 1732 | default_member_type_forces_blk (const_tree, machine_mode) |
f91ed644 | 1733 | { |
1734 | return false; | |
1735 | } | |
1736 | ||
058a1b7a | 1737 | rtx |
1738 | default_load_bounds_for_arg (rtx addr ATTRIBUTE_UNUSED, | |
1739 | rtx ptr ATTRIBUTE_UNUSED, | |
1740 | rtx bnd ATTRIBUTE_UNUSED) | |
1741 | { | |
1742 | gcc_unreachable (); | |
1743 | } | |
1744 | ||
1745 | void | |
1746 | default_store_bounds_for_arg (rtx val ATTRIBUTE_UNUSED, | |
1747 | rtx addr ATTRIBUTE_UNUSED, | |
1748 | rtx bounds ATTRIBUTE_UNUSED, | |
1749 | rtx to ATTRIBUTE_UNUSED) | |
1750 | { | |
1751 | gcc_unreachable (); | |
1752 | } | |
1753 | ||
1754 | rtx | |
1755 | default_load_returned_bounds (rtx slot ATTRIBUTE_UNUSED) | |
1756 | { | |
1757 | gcc_unreachable (); | |
1758 | } | |
1759 | ||
1760 | void | |
1761 | default_store_returned_bounds (rtx slot ATTRIBUTE_UNUSED, | |
1762 | rtx bounds ATTRIBUTE_UNUSED) | |
1763 | { | |
1764 | gcc_unreachable (); | |
1765 | } | |
1766 | ||
b7740973 | 1767 | /* Default version of canonicalize_comparison. */ |
1768 | ||
1769 | void | |
1770 | default_canonicalize_comparison (int *, rtx *, rtx *, bool) | |
1771 | { | |
1772 | } | |
1773 | ||
b560fabd | 1774 | /* Default implementation of TARGET_ATOMIC_ASSIGN_EXPAND_FENV. */ |
1775 | ||
1776 | void | |
1777 | default_atomic_assign_expand_fenv (tree *, tree *, tree *) | |
1778 | { | |
1779 | } | |
1780 | ||
b94f16f4 | 1781 | #ifndef PAD_VARARGS_DOWN |
1782 | #define PAD_VARARGS_DOWN BYTES_BIG_ENDIAN | |
1783 | #endif | |
1784 | ||
1785 | /* Build an indirect-ref expression over the given TREE, which represents a | |
1786 | piece of a va_arg() expansion. */ | |
1787 | tree | |
1788 | build_va_arg_indirect_ref (tree addr) | |
1789 | { | |
1790 | addr = build_simple_mem_ref_loc (EXPR_LOCATION (addr), addr); | |
b94f16f4 | 1791 | return addr; |
1792 | } | |
1793 | ||
1794 | /* The "standard" implementation of va_arg: read the value from the | |
1795 | current (padded) address and increment by the (padded) size. */ | |
1796 | ||
1797 | tree | |
1798 | std_gimplify_va_arg_expr (tree valist, tree type, gimple_seq *pre_p, | |
1799 | gimple_seq *post_p) | |
1800 | { | |
1801 | tree addr, t, type_size, rounded_size, valist_tmp; | |
1802 | unsigned HOST_WIDE_INT align, boundary; | |
1803 | bool indirect; | |
1804 | ||
b94f16f4 | 1805 | /* All of the alignment and movement below is for args-grow-up machines. |
1806 | As of 2004, there are only 3 ARGS_GROW_DOWNWARD targets, and they all | |
1807 | implement their own specialized gimplify_va_arg_expr routines. */ | |
ccccd62c | 1808 | if (ARGS_GROW_DOWNWARD) |
1809 | gcc_unreachable (); | |
b94f16f4 | 1810 | |
1811 | indirect = pass_by_reference (NULL, TYPE_MODE (type), type, false); | |
1812 | if (indirect) | |
1813 | type = build_pointer_type (type); | |
1814 | ||
1815 | align = PARM_BOUNDARY / BITS_PER_UNIT; | |
1816 | boundary = targetm.calls.function_arg_boundary (TYPE_MODE (type), type); | |
1817 | ||
1818 | /* When we align parameter on stack for caller, if the parameter | |
1819 | alignment is beyond MAX_SUPPORTED_STACK_ALIGNMENT, it will be | |
1820 | aligned at MAX_SUPPORTED_STACK_ALIGNMENT. We will match callee | |
1821 | here with caller. */ | |
1822 | if (boundary > MAX_SUPPORTED_STACK_ALIGNMENT) | |
1823 | boundary = MAX_SUPPORTED_STACK_ALIGNMENT; | |
1824 | ||
1825 | boundary /= BITS_PER_UNIT; | |
1826 | ||
1827 | /* Hoist the valist value into a temporary for the moment. */ | |
1828 | valist_tmp = get_initialized_tmp_var (valist, pre_p, NULL); | |
1829 | ||
1830 | /* va_list pointer is aligned to PARM_BOUNDARY. If argument actually | |
1831 | requires greater alignment, we must perform dynamic alignment. */ | |
1832 | if (boundary > align | |
1833 | && !integer_zerop (TYPE_SIZE (type))) | |
1834 | { | |
1835 | t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist_tmp, | |
1836 | fold_build_pointer_plus_hwi (valist_tmp, boundary - 1)); | |
1837 | gimplify_and_add (t, pre_p); | |
1838 | ||
1839 | t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist_tmp, | |
1840 | fold_build2 (BIT_AND_EXPR, TREE_TYPE (valist), | |
1841 | valist_tmp, | |
1842 | build_int_cst (TREE_TYPE (valist), -boundary))); | |
1843 | gimplify_and_add (t, pre_p); | |
1844 | } | |
1845 | else | |
1846 | boundary = align; | |
1847 | ||
1848 | /* If the actual alignment is less than the alignment of the type, | |
1849 | adjust the type accordingly so that we don't assume strict alignment | |
1850 | when dereferencing the pointer. */ | |
1851 | boundary *= BITS_PER_UNIT; | |
1852 | if (boundary < TYPE_ALIGN (type)) | |
1853 | { | |
1854 | type = build_variant_type_copy (type); | |
1855 | TYPE_ALIGN (type) = boundary; | |
1856 | } | |
1857 | ||
1858 | /* Compute the rounded size of the type. */ | |
1859 | type_size = size_in_bytes (type); | |
1860 | rounded_size = round_up (type_size, align); | |
1861 | ||
1862 | /* Reduce rounded_size so it's sharable with the postqueue. */ | |
1863 | gimplify_expr (&rounded_size, pre_p, post_p, is_gimple_val, fb_rvalue); | |
1864 | ||
1865 | /* Get AP. */ | |
1866 | addr = valist_tmp; | |
1867 | if (PAD_VARARGS_DOWN && !integer_zerop (rounded_size)) | |
1868 | { | |
1869 | /* Small args are padded downward. */ | |
1870 | t = fold_build2_loc (input_location, GT_EXPR, sizetype, | |
1871 | rounded_size, size_int (align)); | |
1872 | t = fold_build3 (COND_EXPR, sizetype, t, size_zero_node, | |
1873 | size_binop (MINUS_EXPR, rounded_size, type_size)); | |
1874 | addr = fold_build_pointer_plus (addr, t); | |
1875 | } | |
1876 | ||
1877 | /* Compute new value for AP. */ | |
1878 | t = fold_build_pointer_plus (valist_tmp, rounded_size); | |
1879 | t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist, t); | |
1880 | gimplify_and_add (t, pre_p); | |
1881 | ||
1882 | addr = fold_convert (build_pointer_type (type), addr); | |
1883 | ||
1884 | if (indirect) | |
1885 | addr = build_va_arg_indirect_ref (addr); | |
1886 | ||
1887 | return build_va_arg_indirect_ref (addr); | |
1888 | } | |
1889 | ||
058a1b7a | 1890 | tree |
1891 | default_chkp_bound_type (void) | |
1892 | { | |
1893 | tree res = make_node (POINTER_BOUNDS_TYPE); | |
1894 | TYPE_PRECISION (res) = TYPE_PRECISION (size_type_node) * 2; | |
1895 | TYPE_NAME (res) = get_identifier ("__bounds_type"); | |
1896 | SET_TYPE_MODE (res, targetm.chkp_bound_mode ()); | |
1897 | layout_type (res); | |
1898 | return res; | |
1899 | } | |
1900 | ||
1901 | enum machine_mode | |
1902 | default_chkp_bound_mode (void) | |
1903 | { | |
1904 | return VOIDmode; | |
1905 | } | |
1906 | ||
1907 | tree | |
1908 | default_builtin_chkp_function (unsigned int fcode ATTRIBUTE_UNUSED) | |
1909 | { | |
1910 | return NULL_TREE; | |
1911 | } | |
1912 | ||
1913 | rtx | |
1914 | default_chkp_function_value_bounds (const_tree ret_type ATTRIBUTE_UNUSED, | |
1915 | const_tree fn_decl_or_type ATTRIBUTE_UNUSED, | |
1916 | bool outgoing ATTRIBUTE_UNUSED) | |
1917 | { | |
1918 | gcc_unreachable (); | |
1919 | } | |
1920 | ||
1921 | tree | |
1922 | default_chkp_make_bounds_constant (HOST_WIDE_INT lb ATTRIBUTE_UNUSED, | |
1923 | HOST_WIDE_INT ub ATTRIBUTE_UNUSED) | |
1924 | { | |
1925 | return NULL_TREE; | |
1926 | } | |
1927 | ||
1928 | int | |
1929 | default_chkp_initialize_bounds (tree var ATTRIBUTE_UNUSED, | |
1930 | tree lb ATTRIBUTE_UNUSED, | |
1931 | tree ub ATTRIBUTE_UNUSED, | |
1932 | tree *stmts ATTRIBUTE_UNUSED) | |
1933 | { | |
1934 | return 0; | |
1935 | } | |
1936 | ||
1937 | void | |
1938 | default_setup_incoming_vararg_bounds (cumulative_args_t ca ATTRIBUTE_UNUSED, | |
1939 | enum machine_mode mode ATTRIBUTE_UNUSED, | |
1940 | tree type ATTRIBUTE_UNUSED, | |
1941 | int *pretend_arg_size ATTRIBUTE_UNUSED, | |
1942 | int second_time ATTRIBUTE_UNUSED) | |
1943 | { | |
1944 | } | |
1945 | ||
5f35dd0e | 1946 | /* An implementation of TARGET_CAN_USE_DOLOOP_P for targets that do |
1947 | not support nested low-overhead loops. */ | |
1948 | ||
1949 | bool | |
55af3bae | 1950 | can_use_doloop_if_innermost (const widest_int &, const widest_int &, |
5f35dd0e | 1951 | unsigned int loop_depth, bool) |
1952 | { | |
1953 | return loop_depth == 1; | |
1954 | } | |
b94f16f4 | 1955 | |
acdfe9e0 | 1956 | /* Default implementation of TARGET_OPTAB_SUPPORTED_P. */ |
1957 | ||
1958 | bool | |
1959 | default_optab_supported_p (int, machine_mode, machine_mode, optimization_type) | |
1960 | { | |
1961 | return true; | |
1962 | } | |
1963 | ||
f1a0edff | 1964 | #include "gt-targhooks.h" |