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947ed59a | 1 | /* Tree-based target query functions relating to optabs |
fbd26352 | 2 | Copyright (C) 1987-2019 Free Software Foundation, Inc. |
947ed59a | 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 | |
8 | Software Foundation; either version 3, or (at your option) any later | |
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 | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | ||
21 | #include "config.h" | |
22 | #include "system.h" | |
23 | #include "coretypes.h" | |
24 | #include "target.h" | |
25 | #include "insn-codes.h" | |
26 | #include "tree.h" | |
27 | #include "optabs-tree.h" | |
28 | #include "stor-layout.h" | |
29 | ||
30 | /* Return the optab used for computing the operation given by the tree code, | |
31 | CODE and the tree EXP. This function is not always usable (for example, it | |
32 | cannot give complete results for multiplication or division) but probably | |
33 | ought to be relied on more widely throughout the expander. */ | |
34 | optab | |
35 | optab_for_tree_code (enum tree_code code, const_tree type, | |
36 | enum optab_subtype subtype) | |
37 | { | |
38 | bool trapv; | |
39 | switch (code) | |
40 | { | |
41 | case BIT_AND_EXPR: | |
42 | return and_optab; | |
43 | ||
44 | case BIT_IOR_EXPR: | |
45 | return ior_optab; | |
46 | ||
47 | case BIT_NOT_EXPR: | |
48 | return one_cmpl_optab; | |
49 | ||
50 | case BIT_XOR_EXPR: | |
51 | return xor_optab; | |
52 | ||
53 | case MULT_HIGHPART_EXPR: | |
54 | return TYPE_UNSIGNED (type) ? umul_highpart_optab : smul_highpart_optab; | |
55 | ||
56 | case TRUNC_MOD_EXPR: | |
57 | case CEIL_MOD_EXPR: | |
58 | case FLOOR_MOD_EXPR: | |
59 | case ROUND_MOD_EXPR: | |
60 | return TYPE_UNSIGNED (type) ? umod_optab : smod_optab; | |
61 | ||
62 | case RDIV_EXPR: | |
63 | case TRUNC_DIV_EXPR: | |
64 | case CEIL_DIV_EXPR: | |
65 | case FLOOR_DIV_EXPR: | |
66 | case ROUND_DIV_EXPR: | |
67 | case EXACT_DIV_EXPR: | |
68 | if (TYPE_SATURATING (type)) | |
69 | return TYPE_UNSIGNED (type) ? usdiv_optab : ssdiv_optab; | |
70 | return TYPE_UNSIGNED (type) ? udiv_optab : sdiv_optab; | |
71 | ||
72 | case LSHIFT_EXPR: | |
73 | if (TREE_CODE (type) == VECTOR_TYPE) | |
74 | { | |
75 | if (subtype == optab_vector) | |
76 | return TYPE_SATURATING (type) ? unknown_optab : vashl_optab; | |
77 | ||
78 | gcc_assert (subtype == optab_scalar); | |
79 | } | |
80 | if (TYPE_SATURATING (type)) | |
81 | return TYPE_UNSIGNED (type) ? usashl_optab : ssashl_optab; | |
82 | return ashl_optab; | |
83 | ||
84 | case RSHIFT_EXPR: | |
85 | if (TREE_CODE (type) == VECTOR_TYPE) | |
86 | { | |
87 | if (subtype == optab_vector) | |
88 | return TYPE_UNSIGNED (type) ? vlshr_optab : vashr_optab; | |
89 | ||
90 | gcc_assert (subtype == optab_scalar); | |
91 | } | |
92 | return TYPE_UNSIGNED (type) ? lshr_optab : ashr_optab; | |
93 | ||
94 | case LROTATE_EXPR: | |
95 | if (TREE_CODE (type) == VECTOR_TYPE) | |
96 | { | |
97 | if (subtype == optab_vector) | |
98 | return vrotl_optab; | |
99 | ||
100 | gcc_assert (subtype == optab_scalar); | |
101 | } | |
102 | return rotl_optab; | |
103 | ||
104 | case RROTATE_EXPR: | |
105 | if (TREE_CODE (type) == VECTOR_TYPE) | |
106 | { | |
107 | if (subtype == optab_vector) | |
108 | return vrotr_optab; | |
109 | ||
110 | gcc_assert (subtype == optab_scalar); | |
111 | } | |
112 | return rotr_optab; | |
113 | ||
114 | case MAX_EXPR: | |
115 | return TYPE_UNSIGNED (type) ? umax_optab : smax_optab; | |
116 | ||
117 | case MIN_EXPR: | |
118 | return TYPE_UNSIGNED (type) ? umin_optab : smin_optab; | |
119 | ||
120 | case REALIGN_LOAD_EXPR: | |
121 | return vec_realign_load_optab; | |
122 | ||
123 | case WIDEN_SUM_EXPR: | |
124 | return TYPE_UNSIGNED (type) ? usum_widen_optab : ssum_widen_optab; | |
125 | ||
126 | case DOT_PROD_EXPR: | |
127 | return TYPE_UNSIGNED (type) ? udot_prod_optab : sdot_prod_optab; | |
128 | ||
129 | case SAD_EXPR: | |
130 | return TYPE_UNSIGNED (type) ? usad_optab : ssad_optab; | |
131 | ||
132 | case WIDEN_MULT_PLUS_EXPR: | |
133 | return (TYPE_UNSIGNED (type) | |
134 | ? (TYPE_SATURATING (type) | |
135 | ? usmadd_widen_optab : umadd_widen_optab) | |
136 | : (TYPE_SATURATING (type) | |
137 | ? ssmadd_widen_optab : smadd_widen_optab)); | |
138 | ||
139 | case WIDEN_MULT_MINUS_EXPR: | |
140 | return (TYPE_UNSIGNED (type) | |
141 | ? (TYPE_SATURATING (type) | |
142 | ? usmsub_widen_optab : umsub_widen_optab) | |
143 | : (TYPE_SATURATING (type) | |
144 | ? ssmsub_widen_optab : smsub_widen_optab)); | |
145 | ||
947ed59a | 146 | case VEC_WIDEN_MULT_HI_EXPR: |
0efcdf5a | 147 | return (TYPE_UNSIGNED (type) |
148 | ? vec_widen_umult_hi_optab : vec_widen_smult_hi_optab); | |
947ed59a | 149 | |
150 | case VEC_WIDEN_MULT_LO_EXPR: | |
0efcdf5a | 151 | return (TYPE_UNSIGNED (type) |
152 | ? vec_widen_umult_lo_optab : vec_widen_smult_lo_optab); | |
947ed59a | 153 | |
154 | case VEC_WIDEN_MULT_EVEN_EXPR: | |
0efcdf5a | 155 | return (TYPE_UNSIGNED (type) |
156 | ? vec_widen_umult_even_optab : vec_widen_smult_even_optab); | |
947ed59a | 157 | |
158 | case VEC_WIDEN_MULT_ODD_EXPR: | |
0efcdf5a | 159 | return (TYPE_UNSIGNED (type) |
160 | ? vec_widen_umult_odd_optab : vec_widen_smult_odd_optab); | |
947ed59a | 161 | |
162 | case VEC_WIDEN_LSHIFT_HI_EXPR: | |
0efcdf5a | 163 | return (TYPE_UNSIGNED (type) |
164 | ? vec_widen_ushiftl_hi_optab : vec_widen_sshiftl_hi_optab); | |
947ed59a | 165 | |
166 | case VEC_WIDEN_LSHIFT_LO_EXPR: | |
0efcdf5a | 167 | return (TYPE_UNSIGNED (type) |
168 | ? vec_widen_ushiftl_lo_optab : vec_widen_sshiftl_lo_optab); | |
947ed59a | 169 | |
170 | case VEC_UNPACK_HI_EXPR: | |
0efcdf5a | 171 | return (TYPE_UNSIGNED (type) |
172 | ? vec_unpacku_hi_optab : vec_unpacks_hi_optab); | |
947ed59a | 173 | |
174 | case VEC_UNPACK_LO_EXPR: | |
0efcdf5a | 175 | return (TYPE_UNSIGNED (type) |
176 | ? vec_unpacku_lo_optab : vec_unpacks_lo_optab); | |
947ed59a | 177 | |
178 | case VEC_UNPACK_FLOAT_HI_EXPR: | |
179 | /* The signedness is determined from input operand. */ | |
0efcdf5a | 180 | return (TYPE_UNSIGNED (type) |
181 | ? vec_unpacku_float_hi_optab : vec_unpacks_float_hi_optab); | |
947ed59a | 182 | |
183 | case VEC_UNPACK_FLOAT_LO_EXPR: | |
184 | /* The signedness is determined from input operand. */ | |
0efcdf5a | 185 | return (TYPE_UNSIGNED (type) |
186 | ? vec_unpacku_float_lo_optab : vec_unpacks_float_lo_optab); | |
187 | ||
188 | case VEC_UNPACK_FIX_TRUNC_HI_EXPR: | |
189 | /* The signedness is determined from output operand. */ | |
190 | return (TYPE_UNSIGNED (type) | |
191 | ? vec_unpack_ufix_trunc_hi_optab | |
192 | : vec_unpack_sfix_trunc_hi_optab); | |
193 | ||
194 | case VEC_UNPACK_FIX_TRUNC_LO_EXPR: | |
195 | /* The signedness is determined from output operand. */ | |
196 | return (TYPE_UNSIGNED (type) | |
197 | ? vec_unpack_ufix_trunc_lo_optab | |
198 | : vec_unpack_sfix_trunc_lo_optab); | |
947ed59a | 199 | |
200 | case VEC_PACK_TRUNC_EXPR: | |
201 | return vec_pack_trunc_optab; | |
202 | ||
203 | case VEC_PACK_SAT_EXPR: | |
204 | return TYPE_UNSIGNED (type) ? vec_pack_usat_optab : vec_pack_ssat_optab; | |
205 | ||
206 | case VEC_PACK_FIX_TRUNC_EXPR: | |
207 | /* The signedness is determined from output operand. */ | |
0efcdf5a | 208 | return (TYPE_UNSIGNED (type) |
209 | ? vec_pack_ufix_trunc_optab : vec_pack_sfix_trunc_optab); | |
210 | ||
211 | case VEC_PACK_FLOAT_EXPR: | |
212 | /* The signedness is determined from input operand. */ | |
213 | return (TYPE_UNSIGNED (type) | |
214 | ? vec_packu_float_optab : vec_packs_float_optab); | |
947ed59a | 215 | |
a308fcf8 | 216 | case VEC_DUPLICATE_EXPR: |
217 | return vec_duplicate_optab; | |
218 | ||
7ed29fa2 | 219 | case VEC_SERIES_EXPR: |
220 | return vec_series_optab; | |
221 | ||
947ed59a | 222 | default: |
223 | break; | |
224 | } | |
225 | ||
226 | trapv = INTEGRAL_TYPE_P (type) && TYPE_OVERFLOW_TRAPS (type); | |
227 | switch (code) | |
228 | { | |
229 | case POINTER_PLUS_EXPR: | |
230 | case PLUS_EXPR: | |
231 | if (TYPE_SATURATING (type)) | |
232 | return TYPE_UNSIGNED (type) ? usadd_optab : ssadd_optab; | |
233 | return trapv ? addv_optab : add_optab; | |
234 | ||
57e83b58 | 235 | case POINTER_DIFF_EXPR: |
947ed59a | 236 | case MINUS_EXPR: |
237 | if (TYPE_SATURATING (type)) | |
238 | return TYPE_UNSIGNED (type) ? ussub_optab : sssub_optab; | |
239 | return trapv ? subv_optab : sub_optab; | |
240 | ||
241 | case MULT_EXPR: | |
242 | if (TYPE_SATURATING (type)) | |
243 | return TYPE_UNSIGNED (type) ? usmul_optab : ssmul_optab; | |
244 | return trapv ? smulv_optab : smul_optab; | |
245 | ||
246 | case NEGATE_EXPR: | |
247 | if (TYPE_SATURATING (type)) | |
248 | return TYPE_UNSIGNED (type) ? usneg_optab : ssneg_optab; | |
249 | return trapv ? negv_optab : neg_optab; | |
250 | ||
251 | case ABS_EXPR: | |
252 | return trapv ? absv_optab : abs_optab; | |
253 | ||
1c67942e | 254 | case ABSU_EXPR: |
255 | return abs_optab; | |
947ed59a | 256 | default: |
257 | return unknown_optab; | |
258 | } | |
259 | } | |
260 | ||
947ed59a | 261 | /* Function supportable_convert_operation |
262 | ||
263 | Check whether an operation represented by the code CODE is a | |
264 | convert operation that is supported by the target platform in | |
265 | vector form (i.e., when operating on arguments of type VECTYPE_IN | |
266 | producing a result of type VECTYPE_OUT). | |
267 | ||
268 | Convert operations we currently support directly are FIX_TRUNC and FLOAT. | |
269 | This function checks if these operations are supported | |
270 | by the target platform either directly (via vector tree-codes), or via | |
271 | target builtins. | |
272 | ||
273 | Output: | |
274 | - CODE1 is code of vector operation to be used when | |
275 | vectorizing the operation, if available. | |
276 | - DECL is decl of target builtin functions to be used | |
277 | when vectorizing the operation, if available. In this case, | |
278 | CODE1 is CALL_EXPR. */ | |
279 | ||
280 | bool | |
281 | supportable_convert_operation (enum tree_code code, | |
282 | tree vectype_out, tree vectype_in, | |
283 | tree *decl, enum tree_code *code1) | |
284 | { | |
285 | machine_mode m1,m2; | |
286 | bool truncp; | |
287 | ||
288 | m1 = TYPE_MODE (vectype_out); | |
289 | m2 = TYPE_MODE (vectype_in); | |
290 | ||
291 | /* First check if we can done conversion directly. */ | |
292 | if ((code == FIX_TRUNC_EXPR | |
293 | && can_fix_p (m1,m2,TYPE_UNSIGNED (vectype_out), &truncp) | |
294 | != CODE_FOR_nothing) | |
295 | || (code == FLOAT_EXPR | |
296 | && can_float_p (m1,m2,TYPE_UNSIGNED (vectype_in)) | |
297 | != CODE_FOR_nothing)) | |
298 | { | |
299 | *code1 = code; | |
300 | return true; | |
301 | } | |
302 | ||
303 | /* Now check for builtin. */ | |
304 | if (targetm.vectorize.builtin_conversion | |
305 | && targetm.vectorize.builtin_conversion (code, vectype_out, vectype_in)) | |
306 | { | |
307 | *code1 = CALL_EXPR; | |
308 | *decl = targetm.vectorize.builtin_conversion (code, vectype_out, | |
309 | vectype_in); | |
310 | return true; | |
311 | } | |
312 | return false; | |
313 | } | |
314 | ||
dab48979 | 315 | /* Return TRUE if appropriate vector insn is available |
316 | for vector comparison expr with vector type VALUE_TYPE | |
317 | and resulting mask with MASK_TYPE. */ | |
318 | ||
319 | bool | |
6a2e2a85 | 320 | expand_vec_cmp_expr_p (tree value_type, tree mask_type, enum tree_code code) |
dab48979 | 321 | { |
6a2e2a85 | 322 | if (get_vec_cmp_icode (TYPE_MODE (value_type), TYPE_MODE (mask_type), |
323 | TYPE_UNSIGNED (value_type)) != CODE_FOR_nothing) | |
324 | return true; | |
325 | if ((code == EQ_EXPR || code == NE_EXPR) | |
326 | && (get_vec_cmp_eq_icode (TYPE_MODE (value_type), TYPE_MODE (mask_type)) | |
327 | != CODE_FOR_nothing)) | |
328 | return true; | |
329 | return false; | |
dab48979 | 330 | } |
331 | ||
947ed59a | 332 | /* Return TRUE iff, appropriate vector insns are available |
333 | for vector cond expr with vector type VALUE_TYPE and a comparison | |
334 | with operand vector types in CMP_OP_TYPE. */ | |
335 | ||
336 | bool | |
6a2e2a85 | 337 | expand_vec_cond_expr_p (tree value_type, tree cmp_op_type, enum tree_code code) |
947ed59a | 338 | { |
339 | machine_mode value_mode = TYPE_MODE (value_type); | |
340 | machine_mode cmp_op_mode = TYPE_MODE (cmp_op_type); | |
58f74eff | 341 | if (VECTOR_BOOLEAN_TYPE_P (cmp_op_type) |
342 | && get_vcond_mask_icode (TYPE_MODE (value_type), | |
343 | TYPE_MODE (cmp_op_type)) != CODE_FOR_nothing) | |
344 | return true; | |
345 | ||
52acb7ae | 346 | if (maybe_ne (GET_MODE_SIZE (value_mode), GET_MODE_SIZE (cmp_op_mode)) |
ba7efd65 | 347 | || maybe_ne (GET_MODE_NUNITS (value_mode), GET_MODE_NUNITS (cmp_op_mode))) |
947ed59a | 348 | return false; |
6a2e2a85 | 349 | |
350 | if (get_vcond_icode (TYPE_MODE (value_type), TYPE_MODE (cmp_op_type), | |
351 | TYPE_UNSIGNED (cmp_op_type)) == CODE_FOR_nothing | |
352 | && ((code != EQ_EXPR && code != NE_EXPR) | |
353 | || get_vcond_eq_icode (TYPE_MODE (value_type), | |
354 | TYPE_MODE (cmp_op_type)) == CODE_FOR_nothing)) | |
355 | return false; | |
356 | ||
947ed59a | 357 | return true; |
358 | } | |
359 | ||
360 | /* Use the current target and options to initialize | |
361 | TREE_OPTIMIZATION_OPTABS (OPTNODE). */ | |
362 | ||
363 | void | |
364 | init_tree_optimization_optabs (tree optnode) | |
365 | { | |
366 | /* Quick exit if we have already computed optabs for this target. */ | |
367 | if (TREE_OPTIMIZATION_BASE_OPTABS (optnode) == this_target_optabs) | |
368 | return; | |
369 | ||
370 | /* Forget any previous information and set up for the current target. */ | |
371 | TREE_OPTIMIZATION_BASE_OPTABS (optnode) = this_target_optabs; | |
372 | struct target_optabs *tmp_optabs = (struct target_optabs *) | |
373 | TREE_OPTIMIZATION_OPTABS (optnode); | |
374 | if (tmp_optabs) | |
375 | memset (tmp_optabs, 0, sizeof (struct target_optabs)); | |
376 | else | |
1619606c | 377 | tmp_optabs = ggc_cleared_alloc<target_optabs> (); |
947ed59a | 378 | |
379 | /* Generate a new set of optabs into tmp_optabs. */ | |
380 | init_all_optabs (tmp_optabs); | |
381 | ||
382 | /* If the optabs changed, record it. */ | |
383 | if (memcmp (tmp_optabs, this_target_optabs, sizeof (struct target_optabs))) | |
384 | TREE_OPTIMIZATION_OPTABS (optnode) = tmp_optabs; | |
385 | else | |
386 | { | |
387 | TREE_OPTIMIZATION_OPTABS (optnode) = NULL; | |
388 | ggc_free (tmp_optabs); | |
389 | } | |
390 | } | |
f769c6cf | 391 | |
392 | /* Return TRUE if the target has support for vector right shift of an | |
393 | operand of type TYPE. If OT_TYPE is OPTAB_DEFAULT, check for existence | |
394 | of a shift by either a scalar or a vector. Otherwise, check only | |
395 | for a shift that matches OT_TYPE. */ | |
396 | ||
397 | bool | |
398 | target_supports_op_p (tree type, enum tree_code code, | |
399 | enum optab_subtype ot_subtype) | |
400 | { | |
401 | optab ot = optab_for_tree_code (code, type, ot_subtype); | |
402 | return (ot != unknown_optab | |
403 | && optab_handler (ot, TYPE_MODE (type)) != CODE_FOR_nothing); | |
404 | } | |
405 |