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60cbb674 TS |
1 | /* OMP constructs' SIMD clone supporting code. |
2 | ||
3 | Copyright (C) 2005-2016 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 3, or (at your option) any later | |
10 | version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | 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 | ||
21 | #include "config.h" | |
22 | #include "system.h" | |
23 | #include "coretypes.h" | |
24 | #include "backend.h" | |
25 | #include "target.h" | |
26 | #include "tree.h" | |
27 | #include "gimple.h" | |
28 | #include "cfghooks.h" | |
29 | #include "alloc-pool.h" | |
30 | #include "tree-pass.h" | |
31 | #include "ssa.h" | |
32 | #include "cgraph.h" | |
33 | #include "pretty-print.h" | |
34 | #include "diagnostic-core.h" | |
35 | #include "fold-const.h" | |
36 | #include "stor-layout.h" | |
37 | #include "cfganal.h" | |
38 | #include "gimplify.h" | |
39 | #include "gimple-iterator.h" | |
40 | #include "gimplify-me.h" | |
41 | #include "gimple-walk.h" | |
42 | #include "langhooks.h" | |
43 | #include "tree-cfg.h" | |
44 | #include "tree-into-ssa.h" | |
45 | #include "tree-dfa.h" | |
46 | #include "cfgloop.h" | |
47 | #include "symbol-summary.h" | |
48 | #include "ipa-prop.h" | |
49 | #include "tree-eh.h" | |
ad200580 | 50 | #include "varasm.h" |
60cbb674 TS |
51 | |
52 | ||
53 | /* Allocate a fresh `simd_clone' and return it. NARGS is the number | |
54 | of arguments to reserve space for. */ | |
55 | ||
56 | static struct cgraph_simd_clone * | |
57 | simd_clone_struct_alloc (int nargs) | |
58 | { | |
59 | struct cgraph_simd_clone *clone_info; | |
60 | size_t len = (sizeof (struct cgraph_simd_clone) | |
61 | + nargs * sizeof (struct cgraph_simd_clone_arg)); | |
62 | clone_info = (struct cgraph_simd_clone *) | |
63 | ggc_internal_cleared_alloc (len); | |
64 | return clone_info; | |
65 | } | |
66 | ||
67 | /* Make a copy of the `struct cgraph_simd_clone' in FROM to TO. */ | |
68 | ||
69 | static inline void | |
70 | simd_clone_struct_copy (struct cgraph_simd_clone *to, | |
71 | struct cgraph_simd_clone *from) | |
72 | { | |
73 | memcpy (to, from, (sizeof (struct cgraph_simd_clone) | |
74 | + ((from->nargs - from->inbranch) | |
75 | * sizeof (struct cgraph_simd_clone_arg)))); | |
76 | } | |
77 | ||
78 | /* Return vector of parameter types of function FNDECL. This uses | |
79 | TYPE_ARG_TYPES if available, otherwise falls back to types of | |
80 | DECL_ARGUMENTS types. */ | |
81 | ||
82 | static vec<tree> | |
83 | simd_clone_vector_of_formal_parm_types (tree fndecl) | |
84 | { | |
85 | if (TYPE_ARG_TYPES (TREE_TYPE (fndecl))) | |
86 | return ipa_get_vector_of_formal_parm_types (TREE_TYPE (fndecl)); | |
87 | vec<tree> args = ipa_get_vector_of_formal_parms (fndecl); | |
88 | unsigned int i; | |
89 | tree arg; | |
90 | FOR_EACH_VEC_ELT (args, i, arg) | |
91 | args[i] = TREE_TYPE (args[i]); | |
92 | return args; | |
93 | } | |
94 | ||
95 | /* Given a simd function in NODE, extract the simd specific | |
96 | information from the OMP clauses passed in CLAUSES, and return | |
97 | the struct cgraph_simd_clone * if it should be cloned. *INBRANCH_SPECIFIED | |
98 | is set to TRUE if the `inbranch' or `notinbranch' clause specified, | |
99 | otherwise set to FALSE. */ | |
100 | ||
101 | static struct cgraph_simd_clone * | |
102 | simd_clone_clauses_extract (struct cgraph_node *node, tree clauses, | |
103 | bool *inbranch_specified) | |
104 | { | |
105 | vec<tree> args = simd_clone_vector_of_formal_parm_types (node->decl); | |
106 | tree t; | |
107 | int n; | |
108 | *inbranch_specified = false; | |
109 | ||
110 | n = args.length (); | |
111 | if (n > 0 && args.last () == void_type_node) | |
112 | n--; | |
113 | ||
114 | /* To distinguish from an OpenMP simd clone, Cilk Plus functions to | |
115 | be cloned have a distinctive artificial label in addition to "omp | |
116 | declare simd". */ | |
117 | bool cilk_clone | |
118 | = (flag_cilkplus | |
119 | && lookup_attribute ("cilk simd function", | |
120 | DECL_ATTRIBUTES (node->decl))); | |
121 | ||
122 | /* Allocate one more than needed just in case this is an in-branch | |
123 | clone which will require a mask argument. */ | |
124 | struct cgraph_simd_clone *clone_info = simd_clone_struct_alloc (n + 1); | |
125 | clone_info->nargs = n; | |
126 | clone_info->cilk_elemental = cilk_clone; | |
127 | ||
128 | if (!clauses) | |
129 | { | |
130 | args.release (); | |
131 | return clone_info; | |
132 | } | |
133 | clauses = TREE_VALUE (clauses); | |
134 | if (!clauses || TREE_CODE (clauses) != OMP_CLAUSE) | |
135 | return clone_info; | |
136 | ||
137 | for (t = clauses; t; t = OMP_CLAUSE_CHAIN (t)) | |
138 | { | |
139 | switch (OMP_CLAUSE_CODE (t)) | |
140 | { | |
141 | case OMP_CLAUSE_INBRANCH: | |
142 | clone_info->inbranch = 1; | |
143 | *inbranch_specified = true; | |
144 | break; | |
145 | case OMP_CLAUSE_NOTINBRANCH: | |
146 | clone_info->inbranch = 0; | |
147 | *inbranch_specified = true; | |
148 | break; | |
149 | case OMP_CLAUSE_SIMDLEN: | |
150 | clone_info->simdlen | |
151 | = TREE_INT_CST_LOW (OMP_CLAUSE_SIMDLEN_EXPR (t)); | |
152 | break; | |
153 | case OMP_CLAUSE_LINEAR: | |
154 | { | |
155 | tree decl = OMP_CLAUSE_DECL (t); | |
156 | tree step = OMP_CLAUSE_LINEAR_STEP (t); | |
157 | int argno = TREE_INT_CST_LOW (decl); | |
158 | if (OMP_CLAUSE_LINEAR_VARIABLE_STRIDE (t)) | |
159 | { | |
160 | enum cgraph_simd_clone_arg_type arg_type; | |
161 | if (TREE_CODE (args[argno]) == REFERENCE_TYPE) | |
162 | switch (OMP_CLAUSE_LINEAR_KIND (t)) | |
163 | { | |
164 | case OMP_CLAUSE_LINEAR_REF: | |
165 | arg_type | |
166 | = SIMD_CLONE_ARG_TYPE_LINEAR_REF_VARIABLE_STEP; | |
167 | break; | |
168 | case OMP_CLAUSE_LINEAR_UVAL: | |
169 | arg_type | |
170 | = SIMD_CLONE_ARG_TYPE_LINEAR_UVAL_VARIABLE_STEP; | |
171 | break; | |
172 | case OMP_CLAUSE_LINEAR_VAL: | |
173 | case OMP_CLAUSE_LINEAR_DEFAULT: | |
174 | arg_type | |
175 | = SIMD_CLONE_ARG_TYPE_LINEAR_VAL_VARIABLE_STEP; | |
176 | break; | |
177 | default: | |
178 | gcc_unreachable (); | |
179 | } | |
180 | else | |
181 | arg_type = SIMD_CLONE_ARG_TYPE_LINEAR_VARIABLE_STEP; | |
182 | clone_info->args[argno].arg_type = arg_type; | |
183 | clone_info->args[argno].linear_step = tree_to_shwi (step); | |
184 | gcc_assert (clone_info->args[argno].linear_step >= 0 | |
185 | && clone_info->args[argno].linear_step < n); | |
186 | } | |
187 | else | |
188 | { | |
189 | if (POINTER_TYPE_P (args[argno])) | |
190 | step = fold_convert (ssizetype, step); | |
191 | if (!tree_fits_shwi_p (step)) | |
192 | { | |
193 | warning_at (OMP_CLAUSE_LOCATION (t), 0, | |
194 | "ignoring large linear step"); | |
195 | args.release (); | |
196 | return NULL; | |
197 | } | |
198 | else if (integer_zerop (step)) | |
199 | { | |
200 | warning_at (OMP_CLAUSE_LOCATION (t), 0, | |
201 | "ignoring zero linear step"); | |
202 | args.release (); | |
203 | return NULL; | |
204 | } | |
205 | else | |
206 | { | |
207 | enum cgraph_simd_clone_arg_type arg_type; | |
208 | if (TREE_CODE (args[argno]) == REFERENCE_TYPE) | |
209 | switch (OMP_CLAUSE_LINEAR_KIND (t)) | |
210 | { | |
211 | case OMP_CLAUSE_LINEAR_REF: | |
212 | arg_type | |
213 | = SIMD_CLONE_ARG_TYPE_LINEAR_REF_CONSTANT_STEP; | |
214 | break; | |
215 | case OMP_CLAUSE_LINEAR_UVAL: | |
216 | arg_type | |
217 | = SIMD_CLONE_ARG_TYPE_LINEAR_UVAL_CONSTANT_STEP; | |
218 | break; | |
219 | case OMP_CLAUSE_LINEAR_VAL: | |
220 | case OMP_CLAUSE_LINEAR_DEFAULT: | |
221 | arg_type | |
222 | = SIMD_CLONE_ARG_TYPE_LINEAR_VAL_CONSTANT_STEP; | |
223 | break; | |
224 | default: | |
225 | gcc_unreachable (); | |
226 | } | |
227 | else | |
228 | arg_type = SIMD_CLONE_ARG_TYPE_LINEAR_CONSTANT_STEP; | |
229 | clone_info->args[argno].arg_type = arg_type; | |
230 | clone_info->args[argno].linear_step = tree_to_shwi (step); | |
231 | } | |
232 | } | |
233 | break; | |
234 | } | |
235 | case OMP_CLAUSE_UNIFORM: | |
236 | { | |
237 | tree decl = OMP_CLAUSE_DECL (t); | |
238 | int argno = tree_to_uhwi (decl); | |
239 | clone_info->args[argno].arg_type | |
240 | = SIMD_CLONE_ARG_TYPE_UNIFORM; | |
241 | break; | |
242 | } | |
243 | case OMP_CLAUSE_ALIGNED: | |
244 | { | |
245 | tree decl = OMP_CLAUSE_DECL (t); | |
246 | int argno = tree_to_uhwi (decl); | |
247 | clone_info->args[argno].alignment | |
248 | = TREE_INT_CST_LOW (OMP_CLAUSE_ALIGNED_ALIGNMENT (t)); | |
249 | break; | |
250 | } | |
251 | default: | |
252 | break; | |
253 | } | |
254 | } | |
255 | args.release (); | |
256 | return clone_info; | |
257 | } | |
258 | ||
259 | /* Given a SIMD clone in NODE, calculate the characteristic data | |
260 | type and return the coresponding type. The characteristic data | |
261 | type is computed as described in the Intel Vector ABI. */ | |
262 | ||
263 | static tree | |
264 | simd_clone_compute_base_data_type (struct cgraph_node *node, | |
265 | struct cgraph_simd_clone *clone_info) | |
266 | { | |
267 | tree type = integer_type_node; | |
268 | tree fndecl = node->decl; | |
269 | ||
270 | /* a) For non-void function, the characteristic data type is the | |
271 | return type. */ | |
272 | if (TREE_CODE (TREE_TYPE (TREE_TYPE (fndecl))) != VOID_TYPE) | |
273 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
274 | ||
275 | /* b) If the function has any non-uniform, non-linear parameters, | |
276 | then the characteristic data type is the type of the first | |
277 | such parameter. */ | |
278 | else | |
279 | { | |
280 | vec<tree> map = simd_clone_vector_of_formal_parm_types (fndecl); | |
281 | for (unsigned int i = 0; i < clone_info->nargs; ++i) | |
282 | if (clone_info->args[i].arg_type == SIMD_CLONE_ARG_TYPE_VECTOR) | |
283 | { | |
284 | type = map[i]; | |
285 | break; | |
286 | } | |
287 | map.release (); | |
288 | } | |
289 | ||
290 | /* c) If the characteristic data type determined by a) or b) above | |
291 | is struct, union, or class type which is pass-by-value (except | |
292 | for the type that maps to the built-in complex data type), the | |
293 | characteristic data type is int. */ | |
294 | if (RECORD_OR_UNION_TYPE_P (type) | |
295 | && !aggregate_value_p (type, NULL) | |
296 | && TREE_CODE (type) != COMPLEX_TYPE) | |
297 | return integer_type_node; | |
298 | ||
299 | /* d) If none of the above three classes is applicable, the | |
300 | characteristic data type is int. */ | |
301 | ||
302 | return type; | |
303 | ||
304 | /* e) For Intel Xeon Phi native and offload compilation, if the | |
305 | resulting characteristic data type is 8-bit or 16-bit integer | |
306 | data type, the characteristic data type is int. */ | |
307 | /* Well, we don't handle Xeon Phi yet. */ | |
308 | } | |
309 | ||
310 | static tree | |
311 | simd_clone_mangle (struct cgraph_node *node, | |
312 | struct cgraph_simd_clone *clone_info) | |
313 | { | |
314 | char vecsize_mangle = clone_info->vecsize_mangle; | |
315 | char mask = clone_info->inbranch ? 'M' : 'N'; | |
316 | unsigned int simdlen = clone_info->simdlen; | |
317 | unsigned int n; | |
318 | pretty_printer pp; | |
319 | ||
320 | gcc_assert (vecsize_mangle && simdlen); | |
321 | ||
322 | pp_string (&pp, "_ZGV"); | |
323 | pp_character (&pp, vecsize_mangle); | |
324 | pp_character (&pp, mask); | |
325 | pp_decimal_int (&pp, simdlen); | |
326 | ||
327 | for (n = 0; n < clone_info->nargs; ++n) | |
328 | { | |
329 | struct cgraph_simd_clone_arg arg = clone_info->args[n]; | |
330 | ||
331 | switch (arg.arg_type) | |
332 | { | |
333 | case SIMD_CLONE_ARG_TYPE_UNIFORM: | |
334 | pp_character (&pp, 'u'); | |
335 | break; | |
336 | case SIMD_CLONE_ARG_TYPE_LINEAR_CONSTANT_STEP: | |
337 | pp_character (&pp, 'l'); | |
338 | goto mangle_linear; | |
339 | case SIMD_CLONE_ARG_TYPE_LINEAR_REF_CONSTANT_STEP: | |
340 | pp_character (&pp, 'R'); | |
341 | goto mangle_linear; | |
342 | case SIMD_CLONE_ARG_TYPE_LINEAR_VAL_CONSTANT_STEP: | |
343 | pp_character (&pp, 'L'); | |
344 | goto mangle_linear; | |
345 | case SIMD_CLONE_ARG_TYPE_LINEAR_UVAL_CONSTANT_STEP: | |
346 | pp_character (&pp, 'U'); | |
347 | goto mangle_linear; | |
348 | mangle_linear: | |
349 | gcc_assert (arg.linear_step != 0); | |
350 | if (arg.linear_step > 1) | |
351 | pp_unsigned_wide_integer (&pp, arg.linear_step); | |
352 | else if (arg.linear_step < 0) | |
353 | { | |
354 | pp_character (&pp, 'n'); | |
355 | pp_unsigned_wide_integer (&pp, (-(unsigned HOST_WIDE_INT) | |
356 | arg.linear_step)); | |
357 | } | |
358 | break; | |
359 | case SIMD_CLONE_ARG_TYPE_LINEAR_VARIABLE_STEP: | |
360 | pp_string (&pp, "ls"); | |
361 | pp_unsigned_wide_integer (&pp, arg.linear_step); | |
362 | break; | |
363 | case SIMD_CLONE_ARG_TYPE_LINEAR_REF_VARIABLE_STEP: | |
364 | pp_string (&pp, "Rs"); | |
365 | pp_unsigned_wide_integer (&pp, arg.linear_step); | |
366 | break; | |
367 | case SIMD_CLONE_ARG_TYPE_LINEAR_VAL_VARIABLE_STEP: | |
368 | pp_string (&pp, "Ls"); | |
369 | pp_unsigned_wide_integer (&pp, arg.linear_step); | |
370 | break; | |
371 | case SIMD_CLONE_ARG_TYPE_LINEAR_UVAL_VARIABLE_STEP: | |
372 | pp_string (&pp, "Us"); | |
373 | pp_unsigned_wide_integer (&pp, arg.linear_step); | |
374 | break; | |
375 | default: | |
376 | pp_character (&pp, 'v'); | |
377 | } | |
378 | if (arg.alignment) | |
379 | { | |
380 | pp_character (&pp, 'a'); | |
381 | pp_decimal_int (&pp, arg.alignment); | |
382 | } | |
383 | } | |
384 | ||
385 | pp_underscore (&pp); | |
386 | const char *str = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (node->decl)); | |
387 | if (*str == '*') | |
388 | ++str; | |
389 | pp_string (&pp, str); | |
390 | str = pp_formatted_text (&pp); | |
391 | ||
392 | /* If there already is a SIMD clone with the same mangled name, don't | |
393 | add another one. This can happen e.g. for | |
394 | #pragma omp declare simd | |
395 | #pragma omp declare simd simdlen(8) | |
396 | int foo (int, int); | |
397 | if the simdlen is assumed to be 8 for the first one, etc. */ | |
398 | for (struct cgraph_node *clone = node->simd_clones; clone; | |
399 | clone = clone->simdclone->next_clone) | |
400 | if (strcmp (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (clone->decl)), | |
401 | str) == 0) | |
402 | return NULL_TREE; | |
403 | ||
404 | return get_identifier (str); | |
405 | } | |
406 | ||
407 | /* Create a simd clone of OLD_NODE and return it. */ | |
408 | ||
409 | static struct cgraph_node * | |
410 | simd_clone_create (struct cgraph_node *old_node) | |
411 | { | |
412 | struct cgraph_node *new_node; | |
413 | if (old_node->definition) | |
414 | { | |
415 | if (!old_node->has_gimple_body_p ()) | |
416 | return NULL; | |
417 | old_node->get_body (); | |
418 | new_node = old_node->create_version_clone_with_body (vNULL, NULL, NULL, | |
419 | false, NULL, NULL, | |
420 | "simdclone"); | |
421 | } | |
422 | else | |
423 | { | |
424 | tree old_decl = old_node->decl; | |
425 | tree new_decl = copy_node (old_node->decl); | |
426 | DECL_NAME (new_decl) = clone_function_name (old_decl, "simdclone"); | |
427 | SET_DECL_ASSEMBLER_NAME (new_decl, DECL_NAME (new_decl)); | |
428 | SET_DECL_RTL (new_decl, NULL); | |
429 | DECL_STATIC_CONSTRUCTOR (new_decl) = 0; | |
430 | DECL_STATIC_DESTRUCTOR (new_decl) = 0; | |
431 | new_node = old_node->create_version_clone (new_decl, vNULL, NULL); | |
432 | if (old_node->in_other_partition) | |
433 | new_node->in_other_partition = 1; | |
434 | } | |
435 | if (new_node == NULL) | |
436 | return new_node; | |
437 | ||
438 | TREE_PUBLIC (new_node->decl) = TREE_PUBLIC (old_node->decl); | |
ad200580 JJ |
439 | DECL_COMDAT (new_node->decl) = DECL_COMDAT (old_node->decl); |
440 | DECL_WEAK (new_node->decl) = DECL_WEAK (old_node->decl); | |
441 | DECL_EXTERNAL (new_node->decl) = DECL_EXTERNAL (old_node->decl); | |
442 | DECL_VISIBILITY_SPECIFIED (new_node->decl) | |
443 | = DECL_VISIBILITY_SPECIFIED (old_node->decl); | |
444 | DECL_VISIBILITY (new_node->decl) = DECL_VISIBILITY (old_node->decl); | |
445 | DECL_DLLIMPORT_P (new_node->decl) = DECL_DLLIMPORT_P (old_node->decl); | |
446 | if (DECL_ONE_ONLY (old_node->decl)) | |
447 | make_decl_one_only (new_node->decl, DECL_ASSEMBLER_NAME (new_node->decl)); | |
448 | ||
449 | /* The method cgraph_version_clone_with_body () will force the new | |
450 | symbol local. Undo this, and inherit external visibility from | |
60cbb674 TS |
451 | the old node. */ |
452 | new_node->local.local = old_node->local.local; | |
453 | new_node->externally_visible = old_node->externally_visible; | |
454 | ||
455 | return new_node; | |
456 | } | |
457 | ||
458 | /* Adjust the return type of the given function to its appropriate | |
459 | vector counterpart. Returns a simd array to be used throughout the | |
460 | function as a return value. */ | |
461 | ||
462 | static tree | |
463 | simd_clone_adjust_return_type (struct cgraph_node *node) | |
464 | { | |
465 | tree fndecl = node->decl; | |
466 | tree orig_rettype = TREE_TYPE (TREE_TYPE (fndecl)); | |
467 | unsigned int veclen; | |
468 | tree t; | |
469 | ||
470 | /* Adjust the function return type. */ | |
471 | if (orig_rettype == void_type_node) | |
472 | return NULL_TREE; | |
473 | TREE_TYPE (fndecl) = build_distinct_type_copy (TREE_TYPE (fndecl)); | |
474 | t = TREE_TYPE (TREE_TYPE (fndecl)); | |
475 | if (INTEGRAL_TYPE_P (t) || POINTER_TYPE_P (t)) | |
476 | veclen = node->simdclone->vecsize_int; | |
477 | else | |
478 | veclen = node->simdclone->vecsize_float; | |
479 | veclen /= GET_MODE_BITSIZE (TYPE_MODE (t)); | |
480 | if (veclen > node->simdclone->simdlen) | |
481 | veclen = node->simdclone->simdlen; | |
482 | if (POINTER_TYPE_P (t)) | |
483 | t = pointer_sized_int_node; | |
484 | if (veclen == node->simdclone->simdlen) | |
485 | t = build_vector_type (t, node->simdclone->simdlen); | |
486 | else | |
487 | { | |
488 | t = build_vector_type (t, veclen); | |
489 | t = build_array_type_nelts (t, node->simdclone->simdlen / veclen); | |
490 | } | |
491 | TREE_TYPE (TREE_TYPE (fndecl)) = t; | |
492 | if (!node->definition) | |
493 | return NULL_TREE; | |
494 | ||
495 | t = DECL_RESULT (fndecl); | |
496 | /* Adjust the DECL_RESULT. */ | |
497 | gcc_assert (TREE_TYPE (t) != void_type_node); | |
498 | TREE_TYPE (t) = TREE_TYPE (TREE_TYPE (fndecl)); | |
499 | relayout_decl (t); | |
500 | ||
501 | tree atype = build_array_type_nelts (orig_rettype, | |
502 | node->simdclone->simdlen); | |
503 | if (veclen != node->simdclone->simdlen) | |
504 | return build1 (VIEW_CONVERT_EXPR, atype, t); | |
505 | ||
506 | /* Set up a SIMD array to use as the return value. */ | |
507 | tree retval = create_tmp_var_raw (atype, "retval"); | |
508 | gimple_add_tmp_var (retval); | |
509 | return retval; | |
510 | } | |
511 | ||
512 | /* Each vector argument has a corresponding array to be used locally | |
513 | as part of the eventual loop. Create such temporary array and | |
514 | return it. | |
515 | ||
516 | PREFIX is the prefix to be used for the temporary. | |
517 | ||
518 | TYPE is the inner element type. | |
519 | ||
520 | SIMDLEN is the number of elements. */ | |
521 | ||
522 | static tree | |
523 | create_tmp_simd_array (const char *prefix, tree type, int simdlen) | |
524 | { | |
525 | tree atype = build_array_type_nelts (type, simdlen); | |
526 | tree avar = create_tmp_var_raw (atype, prefix); | |
527 | gimple_add_tmp_var (avar); | |
528 | return avar; | |
529 | } | |
530 | ||
531 | /* Modify the function argument types to their corresponding vector | |
532 | counterparts if appropriate. Also, create one array for each simd | |
533 | argument to be used locally when using the function arguments as | |
534 | part of the loop. | |
535 | ||
536 | NODE is the function whose arguments are to be adjusted. | |
537 | ||
538 | Returns an adjustment vector that will be filled describing how the | |
539 | argument types will be adjusted. */ | |
540 | ||
541 | static ipa_parm_adjustment_vec | |
542 | simd_clone_adjust_argument_types (struct cgraph_node *node) | |
543 | { | |
544 | vec<tree> args; | |
545 | ipa_parm_adjustment_vec adjustments; | |
546 | ||
547 | if (node->definition) | |
548 | args = ipa_get_vector_of_formal_parms (node->decl); | |
549 | else | |
550 | args = simd_clone_vector_of_formal_parm_types (node->decl); | |
551 | adjustments.create (args.length ()); | |
552 | unsigned i, j, veclen; | |
553 | struct ipa_parm_adjustment adj; | |
554 | struct cgraph_simd_clone *sc = node->simdclone; | |
555 | ||
556 | for (i = 0; i < sc->nargs; ++i) | |
557 | { | |
558 | memset (&adj, 0, sizeof (adj)); | |
559 | tree parm = args[i]; | |
560 | tree parm_type = node->definition ? TREE_TYPE (parm) : parm; | |
561 | adj.base_index = i; | |
562 | adj.base = parm; | |
563 | ||
564 | sc->args[i].orig_arg = node->definition ? parm : NULL_TREE; | |
565 | sc->args[i].orig_type = parm_type; | |
566 | ||
567 | switch (sc->args[i].arg_type) | |
568 | { | |
569 | default: | |
570 | /* No adjustment necessary for scalar arguments. */ | |
571 | adj.op = IPA_PARM_OP_COPY; | |
572 | break; | |
573 | case SIMD_CLONE_ARG_TYPE_LINEAR_UVAL_CONSTANT_STEP: | |
574 | case SIMD_CLONE_ARG_TYPE_LINEAR_UVAL_VARIABLE_STEP: | |
575 | if (node->definition) | |
576 | sc->args[i].simd_array | |
577 | = create_tmp_simd_array (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
578 | TREE_TYPE (parm_type), | |
579 | sc->simdlen); | |
580 | adj.op = IPA_PARM_OP_COPY; | |
581 | break; | |
582 | case SIMD_CLONE_ARG_TYPE_LINEAR_VAL_CONSTANT_STEP: | |
583 | case SIMD_CLONE_ARG_TYPE_LINEAR_VAL_VARIABLE_STEP: | |
584 | case SIMD_CLONE_ARG_TYPE_VECTOR: | |
585 | if (INTEGRAL_TYPE_P (parm_type) || POINTER_TYPE_P (parm_type)) | |
586 | veclen = sc->vecsize_int; | |
587 | else | |
588 | veclen = sc->vecsize_float; | |
589 | veclen /= GET_MODE_BITSIZE (TYPE_MODE (parm_type)); | |
590 | if (veclen > sc->simdlen) | |
591 | veclen = sc->simdlen; | |
592 | adj.arg_prefix = "simd"; | |
593 | if (POINTER_TYPE_P (parm_type)) | |
594 | adj.type = build_vector_type (pointer_sized_int_node, veclen); | |
595 | else | |
596 | adj.type = build_vector_type (parm_type, veclen); | |
597 | sc->args[i].vector_type = adj.type; | |
598 | for (j = veclen; j < sc->simdlen; j += veclen) | |
599 | { | |
600 | adjustments.safe_push (adj); | |
601 | if (j == veclen) | |
602 | { | |
603 | memset (&adj, 0, sizeof (adj)); | |
604 | adj.op = IPA_PARM_OP_NEW; | |
605 | adj.arg_prefix = "simd"; | |
606 | adj.base_index = i; | |
607 | adj.type = sc->args[i].vector_type; | |
608 | } | |
609 | } | |
610 | ||
611 | if (node->definition) | |
612 | sc->args[i].simd_array | |
613 | = create_tmp_simd_array (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
614 | parm_type, sc->simdlen); | |
615 | } | |
616 | adjustments.safe_push (adj); | |
617 | } | |
618 | ||
619 | if (sc->inbranch) | |
620 | { | |
621 | tree base_type = simd_clone_compute_base_data_type (sc->origin, sc); | |
622 | ||
623 | memset (&adj, 0, sizeof (adj)); | |
624 | adj.op = IPA_PARM_OP_NEW; | |
625 | adj.arg_prefix = "mask"; | |
626 | ||
627 | adj.base_index = i; | |
628 | if (INTEGRAL_TYPE_P (base_type) || POINTER_TYPE_P (base_type)) | |
629 | veclen = sc->vecsize_int; | |
630 | else | |
631 | veclen = sc->vecsize_float; | |
632 | veclen /= GET_MODE_BITSIZE (TYPE_MODE (base_type)); | |
633 | if (veclen > sc->simdlen) | |
634 | veclen = sc->simdlen; | |
635 | if (sc->mask_mode != VOIDmode) | |
636 | adj.type | |
637 | = lang_hooks.types.type_for_mode (sc->mask_mode, 1); | |
638 | else if (POINTER_TYPE_P (base_type)) | |
639 | adj.type = build_vector_type (pointer_sized_int_node, veclen); | |
640 | else | |
641 | adj.type = build_vector_type (base_type, veclen); | |
642 | adjustments.safe_push (adj); | |
643 | ||
644 | for (j = veclen; j < sc->simdlen; j += veclen) | |
645 | adjustments.safe_push (adj); | |
646 | ||
647 | /* We have previously allocated one extra entry for the mask. Use | |
648 | it and fill it. */ | |
649 | sc->nargs++; | |
650 | if (sc->mask_mode != VOIDmode) | |
651 | base_type = boolean_type_node; | |
652 | if (node->definition) | |
653 | { | |
654 | sc->args[i].orig_arg | |
655 | = build_decl (UNKNOWN_LOCATION, PARM_DECL, NULL, base_type); | |
656 | if (sc->mask_mode == VOIDmode) | |
657 | sc->args[i].simd_array | |
658 | = create_tmp_simd_array ("mask", base_type, sc->simdlen); | |
659 | else if (veclen < sc->simdlen) | |
660 | sc->args[i].simd_array | |
661 | = create_tmp_simd_array ("mask", adj.type, sc->simdlen / veclen); | |
662 | else | |
663 | sc->args[i].simd_array = NULL_TREE; | |
664 | } | |
665 | sc->args[i].orig_type = base_type; | |
666 | sc->args[i].arg_type = SIMD_CLONE_ARG_TYPE_MASK; | |
667 | } | |
668 | ||
669 | if (node->definition) | |
670 | ipa_modify_formal_parameters (node->decl, adjustments); | |
671 | else | |
672 | { | |
673 | tree new_arg_types = NULL_TREE, new_reversed; | |
674 | bool last_parm_void = false; | |
675 | if (args.length () > 0 && args.last () == void_type_node) | |
676 | last_parm_void = true; | |
677 | ||
678 | gcc_assert (TYPE_ARG_TYPES (TREE_TYPE (node->decl))); | |
679 | j = adjustments.length (); | |
680 | for (i = 0; i < j; i++) | |
681 | { | |
682 | struct ipa_parm_adjustment *adj = &adjustments[i]; | |
683 | tree ptype; | |
684 | if (adj->op == IPA_PARM_OP_COPY) | |
685 | ptype = args[adj->base_index]; | |
686 | else | |
687 | ptype = adj->type; | |
688 | new_arg_types = tree_cons (NULL_TREE, ptype, new_arg_types); | |
689 | } | |
690 | new_reversed = nreverse (new_arg_types); | |
691 | if (last_parm_void) | |
692 | { | |
693 | if (new_reversed) | |
694 | TREE_CHAIN (new_arg_types) = void_list_node; | |
695 | else | |
696 | new_reversed = void_list_node; | |
697 | } | |
698 | ||
699 | tree new_type = build_distinct_type_copy (TREE_TYPE (node->decl)); | |
700 | TYPE_ARG_TYPES (new_type) = new_reversed; | |
701 | TREE_TYPE (node->decl) = new_type; | |
702 | ||
703 | adjustments.release (); | |
704 | } | |
705 | args.release (); | |
706 | return adjustments; | |
707 | } | |
708 | ||
709 | /* Initialize and copy the function arguments in NODE to their | |
710 | corresponding local simd arrays. Returns a fresh gimple_seq with | |
711 | the instruction sequence generated. */ | |
712 | ||
713 | static gimple_seq | |
714 | simd_clone_init_simd_arrays (struct cgraph_node *node, | |
715 | ipa_parm_adjustment_vec adjustments) | |
716 | { | |
717 | gimple_seq seq = NULL; | |
718 | unsigned i = 0, j = 0, k; | |
719 | ||
720 | for (tree arg = DECL_ARGUMENTS (node->decl); | |
721 | arg; | |
722 | arg = DECL_CHAIN (arg), i++, j++) | |
723 | { | |
724 | if (adjustments[j].op == IPA_PARM_OP_COPY | |
725 | || POINTER_TYPE_P (TREE_TYPE (arg))) | |
726 | continue; | |
727 | ||
728 | node->simdclone->args[i].vector_arg = arg; | |
729 | ||
730 | tree array = node->simdclone->args[i].simd_array; | |
731 | if (node->simdclone->mask_mode != VOIDmode | |
732 | && node->simdclone->args[i].arg_type == SIMD_CLONE_ARG_TYPE_MASK) | |
733 | { | |
734 | if (array == NULL_TREE) | |
735 | continue; | |
736 | unsigned int l | |
737 | = tree_to_uhwi (TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (array)))); | |
738 | for (k = 0; k <= l; k++) | |
739 | { | |
740 | if (k) | |
741 | { | |
742 | arg = DECL_CHAIN (arg); | |
743 | j++; | |
744 | } | |
745 | tree t = build4 (ARRAY_REF, TREE_TYPE (TREE_TYPE (array)), | |
746 | array, size_int (k), NULL, NULL); | |
747 | t = build2 (MODIFY_EXPR, TREE_TYPE (t), t, arg); | |
748 | gimplify_and_add (t, &seq); | |
749 | } | |
750 | continue; | |
751 | } | |
752 | if (TYPE_VECTOR_SUBPARTS (TREE_TYPE (arg)) == node->simdclone->simdlen) | |
753 | { | |
754 | tree ptype = build_pointer_type (TREE_TYPE (TREE_TYPE (array))); | |
755 | tree ptr = build_fold_addr_expr (array); | |
756 | tree t = build2 (MEM_REF, TREE_TYPE (arg), ptr, | |
757 | build_int_cst (ptype, 0)); | |
758 | t = build2 (MODIFY_EXPR, TREE_TYPE (t), t, arg); | |
759 | gimplify_and_add (t, &seq); | |
760 | } | |
761 | else | |
762 | { | |
763 | unsigned int simdlen = TYPE_VECTOR_SUBPARTS (TREE_TYPE (arg)); | |
764 | tree ptype = build_pointer_type (TREE_TYPE (TREE_TYPE (array))); | |
765 | for (k = 0; k < node->simdclone->simdlen; k += simdlen) | |
766 | { | |
767 | tree ptr = build_fold_addr_expr (array); | |
768 | int elemsize; | |
769 | if (k) | |
770 | { | |
771 | arg = DECL_CHAIN (arg); | |
772 | j++; | |
773 | } | |
774 | elemsize | |
775 | = GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (TREE_TYPE (arg)))); | |
776 | tree t = build2 (MEM_REF, TREE_TYPE (arg), ptr, | |
777 | build_int_cst (ptype, k * elemsize)); | |
778 | t = build2 (MODIFY_EXPR, TREE_TYPE (t), t, arg); | |
779 | gimplify_and_add (t, &seq); | |
780 | } | |
781 | } | |
782 | } | |
783 | return seq; | |
784 | } | |
785 | ||
786 | /* Callback info for ipa_simd_modify_stmt_ops below. */ | |
787 | ||
788 | struct modify_stmt_info { | |
789 | ipa_parm_adjustment_vec adjustments; | |
790 | gimple *stmt; | |
791 | /* True if the parent statement was modified by | |
792 | ipa_simd_modify_stmt_ops. */ | |
793 | bool modified; | |
794 | }; | |
795 | ||
796 | /* Callback for walk_gimple_op. | |
797 | ||
798 | Adjust operands from a given statement as specified in the | |
799 | adjustments vector in the callback data. */ | |
800 | ||
801 | static tree | |
802 | ipa_simd_modify_stmt_ops (tree *tp, int *walk_subtrees, void *data) | |
803 | { | |
804 | struct walk_stmt_info *wi = (struct walk_stmt_info *) data; | |
805 | struct modify_stmt_info *info = (struct modify_stmt_info *) wi->info; | |
806 | tree *orig_tp = tp; | |
807 | if (TREE_CODE (*tp) == ADDR_EXPR) | |
808 | tp = &TREE_OPERAND (*tp, 0); | |
809 | struct ipa_parm_adjustment *cand = NULL; | |
810 | if (TREE_CODE (*tp) == PARM_DECL) | |
811 | cand = ipa_get_adjustment_candidate (&tp, NULL, info->adjustments, true); | |
812 | else | |
813 | { | |
814 | if (TYPE_P (*tp)) | |
815 | *walk_subtrees = 0; | |
816 | } | |
817 | ||
818 | tree repl = NULL_TREE; | |
819 | if (cand) | |
820 | repl = unshare_expr (cand->new_decl); | |
821 | else | |
822 | { | |
823 | if (tp != orig_tp) | |
824 | { | |
825 | *walk_subtrees = 0; | |
826 | bool modified = info->modified; | |
827 | info->modified = false; | |
828 | walk_tree (tp, ipa_simd_modify_stmt_ops, wi, wi->pset); | |
829 | if (!info->modified) | |
830 | { | |
831 | info->modified = modified; | |
832 | return NULL_TREE; | |
833 | } | |
834 | info->modified = modified; | |
835 | repl = *tp; | |
836 | } | |
837 | else | |
838 | return NULL_TREE; | |
839 | } | |
840 | ||
841 | if (tp != orig_tp) | |
842 | { | |
843 | repl = build_fold_addr_expr (repl); | |
844 | gimple *stmt; | |
845 | if (is_gimple_debug (info->stmt)) | |
846 | { | |
847 | tree vexpr = make_node (DEBUG_EXPR_DECL); | |
848 | stmt = gimple_build_debug_source_bind (vexpr, repl, NULL); | |
849 | DECL_ARTIFICIAL (vexpr) = 1; | |
850 | TREE_TYPE (vexpr) = TREE_TYPE (repl); | |
851 | DECL_MODE (vexpr) = TYPE_MODE (TREE_TYPE (repl)); | |
852 | repl = vexpr; | |
853 | } | |
854 | else | |
855 | { | |
856 | stmt = gimple_build_assign (make_ssa_name (TREE_TYPE (repl)), repl); | |
857 | repl = gimple_assign_lhs (stmt); | |
858 | } | |
859 | gimple_stmt_iterator gsi = gsi_for_stmt (info->stmt); | |
860 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
861 | *orig_tp = repl; | |
862 | } | |
863 | else if (!useless_type_conversion_p (TREE_TYPE (*tp), TREE_TYPE (repl))) | |
864 | { | |
865 | tree vce = build1 (VIEW_CONVERT_EXPR, TREE_TYPE (*tp), repl); | |
866 | *tp = vce; | |
867 | } | |
868 | else | |
869 | *tp = repl; | |
870 | ||
871 | info->modified = true; | |
872 | return NULL_TREE; | |
873 | } | |
874 | ||
875 | /* Traverse the function body and perform all modifications as | |
876 | described in ADJUSTMENTS. At function return, ADJUSTMENTS will be | |
877 | modified such that the replacement/reduction value will now be an | |
878 | offset into the corresponding simd_array. | |
879 | ||
880 | This function will replace all function argument uses with their | |
881 | corresponding simd array elements, and ajust the return values | |
882 | accordingly. */ | |
883 | ||
884 | static void | |
885 | ipa_simd_modify_function_body (struct cgraph_node *node, | |
886 | ipa_parm_adjustment_vec adjustments, | |
887 | tree retval_array, tree iter) | |
888 | { | |
889 | basic_block bb; | |
890 | unsigned int i, j, l; | |
891 | ||
892 | /* Re-use the adjustments array, but this time use it to replace | |
893 | every function argument use to an offset into the corresponding | |
894 | simd_array. */ | |
895 | for (i = 0, j = 0; i < node->simdclone->nargs; ++i, ++j) | |
896 | { | |
897 | if (!node->simdclone->args[i].vector_arg) | |
898 | continue; | |
899 | ||
900 | tree basetype = TREE_TYPE (node->simdclone->args[i].orig_arg); | |
901 | tree vectype = TREE_TYPE (node->simdclone->args[i].vector_arg); | |
902 | adjustments[j].new_decl | |
903 | = build4 (ARRAY_REF, | |
904 | basetype, | |
905 | node->simdclone->args[i].simd_array, | |
906 | iter, | |
907 | NULL_TREE, NULL_TREE); | |
908 | if (adjustments[j].op == IPA_PARM_OP_NONE | |
909 | && TYPE_VECTOR_SUBPARTS (vectype) < node->simdclone->simdlen) | |
910 | j += node->simdclone->simdlen / TYPE_VECTOR_SUBPARTS (vectype) - 1; | |
911 | } | |
912 | ||
913 | l = adjustments.length (); | |
914 | for (i = 1; i < num_ssa_names; i++) | |
915 | { | |
916 | tree name = ssa_name (i); | |
917 | if (name | |
918 | && SSA_NAME_VAR (name) | |
919 | && TREE_CODE (SSA_NAME_VAR (name)) == PARM_DECL) | |
920 | { | |
921 | for (j = 0; j < l; j++) | |
922 | if (SSA_NAME_VAR (name) == adjustments[j].base | |
923 | && adjustments[j].new_decl) | |
924 | { | |
925 | tree base_var; | |
926 | if (adjustments[j].new_ssa_base == NULL_TREE) | |
927 | { | |
928 | base_var | |
929 | = copy_var_decl (adjustments[j].base, | |
930 | DECL_NAME (adjustments[j].base), | |
931 | TREE_TYPE (adjustments[j].base)); | |
932 | adjustments[j].new_ssa_base = base_var; | |
933 | } | |
934 | else | |
935 | base_var = adjustments[j].new_ssa_base; | |
936 | if (SSA_NAME_IS_DEFAULT_DEF (name)) | |
937 | { | |
938 | bb = single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun)); | |
939 | gimple_stmt_iterator gsi = gsi_after_labels (bb); | |
940 | tree new_decl = unshare_expr (adjustments[j].new_decl); | |
941 | set_ssa_default_def (cfun, adjustments[j].base, NULL_TREE); | |
942 | SET_SSA_NAME_VAR_OR_IDENTIFIER (name, base_var); | |
943 | SSA_NAME_IS_DEFAULT_DEF (name) = 0; | |
944 | gimple *stmt = gimple_build_assign (name, new_decl); | |
945 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
946 | } | |
947 | else | |
948 | SET_SSA_NAME_VAR_OR_IDENTIFIER (name, base_var); | |
949 | } | |
950 | } | |
951 | } | |
952 | ||
953 | struct modify_stmt_info info; | |
954 | info.adjustments = adjustments; | |
955 | ||
956 | FOR_EACH_BB_FN (bb, DECL_STRUCT_FUNCTION (node->decl)) | |
957 | { | |
958 | gimple_stmt_iterator gsi; | |
959 | ||
960 | gsi = gsi_start_bb (bb); | |
961 | while (!gsi_end_p (gsi)) | |
962 | { | |
963 | gimple *stmt = gsi_stmt (gsi); | |
964 | info.stmt = stmt; | |
965 | struct walk_stmt_info wi; | |
966 | ||
967 | memset (&wi, 0, sizeof (wi)); | |
968 | info.modified = false; | |
969 | wi.info = &info; | |
970 | walk_gimple_op (stmt, ipa_simd_modify_stmt_ops, &wi); | |
971 | ||
972 | if (greturn *return_stmt = dyn_cast <greturn *> (stmt)) | |
973 | { | |
974 | tree retval = gimple_return_retval (return_stmt); | |
975 | if (!retval) | |
976 | { | |
977 | gsi_remove (&gsi, true); | |
978 | continue; | |
979 | } | |
980 | ||
981 | /* Replace `return foo' with `retval_array[iter] = foo'. */ | |
982 | tree ref = build4 (ARRAY_REF, TREE_TYPE (retval), | |
983 | retval_array, iter, NULL, NULL); | |
984 | stmt = gimple_build_assign (ref, retval); | |
985 | gsi_replace (&gsi, stmt, true); | |
986 | info.modified = true; | |
987 | } | |
988 | ||
989 | if (info.modified) | |
990 | { | |
991 | update_stmt (stmt); | |
992 | if (maybe_clean_eh_stmt (stmt)) | |
993 | gimple_purge_dead_eh_edges (gimple_bb (stmt)); | |
994 | } | |
995 | gsi_next (&gsi); | |
996 | } | |
997 | } | |
998 | } | |
999 | ||
1000 | /* Helper function of simd_clone_adjust, return linear step addend | |
1001 | of Ith argument. */ | |
1002 | ||
1003 | static tree | |
1004 | simd_clone_linear_addend (struct cgraph_node *node, unsigned int i, | |
1005 | tree addtype, basic_block entry_bb) | |
1006 | { | |
1007 | tree ptype = NULL_TREE; | |
1008 | switch (node->simdclone->args[i].arg_type) | |
1009 | { | |
1010 | case SIMD_CLONE_ARG_TYPE_LINEAR_CONSTANT_STEP: | |
1011 | case SIMD_CLONE_ARG_TYPE_LINEAR_REF_CONSTANT_STEP: | |
1012 | case SIMD_CLONE_ARG_TYPE_LINEAR_VAL_CONSTANT_STEP: | |
1013 | case SIMD_CLONE_ARG_TYPE_LINEAR_UVAL_CONSTANT_STEP: | |
1014 | return build_int_cst (addtype, node->simdclone->args[i].linear_step); | |
1015 | case SIMD_CLONE_ARG_TYPE_LINEAR_VARIABLE_STEP: | |
1016 | case SIMD_CLONE_ARG_TYPE_LINEAR_REF_VARIABLE_STEP: | |
1017 | ptype = TREE_TYPE (node->simdclone->args[i].orig_arg); | |
1018 | break; | |
1019 | case SIMD_CLONE_ARG_TYPE_LINEAR_VAL_VARIABLE_STEP: | |
1020 | case SIMD_CLONE_ARG_TYPE_LINEAR_UVAL_VARIABLE_STEP: | |
1021 | ptype = TREE_TYPE (TREE_TYPE (node->simdclone->args[i].orig_arg)); | |
1022 | break; | |
1023 | default: | |
1024 | gcc_unreachable (); | |
1025 | } | |
1026 | ||
1027 | unsigned int idx = node->simdclone->args[i].linear_step; | |
1028 | tree arg = node->simdclone->args[idx].orig_arg; | |
1029 | gcc_assert (is_gimple_reg_type (TREE_TYPE (arg))); | |
1030 | gimple_stmt_iterator gsi = gsi_after_labels (entry_bb); | |
1031 | gimple *g; | |
1032 | tree ret; | |
1033 | if (is_gimple_reg (arg)) | |
1034 | ret = get_or_create_ssa_default_def (cfun, arg); | |
1035 | else | |
1036 | { | |
1037 | g = gimple_build_assign (make_ssa_name (TREE_TYPE (arg)), arg); | |
1038 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
1039 | ret = gimple_assign_lhs (g); | |
1040 | } | |
1041 | if (TREE_CODE (TREE_TYPE (arg)) == REFERENCE_TYPE) | |
1042 | { | |
1043 | g = gimple_build_assign (make_ssa_name (TREE_TYPE (TREE_TYPE (arg))), | |
1044 | build_simple_mem_ref (ret)); | |
1045 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
1046 | ret = gimple_assign_lhs (g); | |
1047 | } | |
1048 | if (!useless_type_conversion_p (addtype, TREE_TYPE (ret))) | |
1049 | { | |
1050 | g = gimple_build_assign (make_ssa_name (addtype), NOP_EXPR, ret); | |
1051 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
1052 | ret = gimple_assign_lhs (g); | |
1053 | } | |
1054 | if (POINTER_TYPE_P (ptype)) | |
1055 | { | |
1056 | tree size = TYPE_SIZE_UNIT (TREE_TYPE (ptype)); | |
1057 | if (size && TREE_CODE (size) == INTEGER_CST) | |
1058 | { | |
1059 | g = gimple_build_assign (make_ssa_name (addtype), MULT_EXPR, | |
1060 | ret, fold_convert (addtype, size)); | |
1061 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
1062 | ret = gimple_assign_lhs (g); | |
1063 | } | |
1064 | } | |
1065 | return ret; | |
1066 | } | |
1067 | ||
1068 | /* Adjust the argument types in NODE to their appropriate vector | |
1069 | counterparts. */ | |
1070 | ||
1071 | static void | |
1072 | simd_clone_adjust (struct cgraph_node *node) | |
1073 | { | |
1074 | push_cfun (DECL_STRUCT_FUNCTION (node->decl)); | |
1075 | ||
1076 | targetm.simd_clone.adjust (node); | |
1077 | ||
1078 | tree retval = simd_clone_adjust_return_type (node); | |
1079 | ipa_parm_adjustment_vec adjustments | |
1080 | = simd_clone_adjust_argument_types (node); | |
1081 | ||
1082 | push_gimplify_context (); | |
1083 | ||
1084 | gimple_seq seq = simd_clone_init_simd_arrays (node, adjustments); | |
1085 | ||
1086 | /* Adjust all uses of vector arguments accordingly. Adjust all | |
1087 | return values accordingly. */ | |
1088 | tree iter = create_tmp_var (unsigned_type_node, "iter"); | |
1089 | tree iter1 = make_ssa_name (iter); | |
1090 | tree iter2 = make_ssa_name (iter); | |
1091 | ipa_simd_modify_function_body (node, adjustments, retval, iter1); | |
d76815f4 | 1092 | adjustments.release (); |
60cbb674 TS |
1093 | |
1094 | /* Initialize the iteration variable. */ | |
1095 | basic_block entry_bb = single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun)); | |
1096 | basic_block body_bb = split_block_after_labels (entry_bb)->dest; | |
1097 | gimple_stmt_iterator gsi = gsi_after_labels (entry_bb); | |
1098 | /* Insert the SIMD array and iv initialization at function | |
1099 | entry. */ | |
1100 | gsi_insert_seq_before (&gsi, seq, GSI_NEW_STMT); | |
1101 | ||
1102 | pop_gimplify_context (NULL); | |
1103 | ||
1104 | /* Create a new BB right before the original exit BB, to hold the | |
1105 | iteration increment and the condition/branch. */ | |
1106 | basic_block orig_exit = EDGE_PRED (EXIT_BLOCK_PTR_FOR_FN (cfun), 0)->src; | |
1107 | basic_block incr_bb = create_empty_bb (orig_exit); | |
1108 | add_bb_to_loop (incr_bb, body_bb->loop_father); | |
1109 | /* The succ of orig_exit was EXIT_BLOCK_PTR_FOR_FN (cfun), with an empty | |
1110 | flag. Set it now to be a FALLTHRU_EDGE. */ | |
1111 | gcc_assert (EDGE_COUNT (orig_exit->succs) == 1); | |
1112 | EDGE_SUCC (orig_exit, 0)->flags |= EDGE_FALLTHRU; | |
1113 | for (unsigned i = 0; | |
1114 | i < EDGE_COUNT (EXIT_BLOCK_PTR_FOR_FN (cfun)->preds); ++i) | |
1115 | { | |
1116 | edge e = EDGE_PRED (EXIT_BLOCK_PTR_FOR_FN (cfun), i); | |
1117 | redirect_edge_succ (e, incr_bb); | |
1118 | } | |
1119 | edge e = make_edge (incr_bb, EXIT_BLOCK_PTR_FOR_FN (cfun), 0); | |
1120 | e->probability = REG_BR_PROB_BASE; | |
1121 | gsi = gsi_last_bb (incr_bb); | |
1122 | gimple *g = gimple_build_assign (iter2, PLUS_EXPR, iter1, | |
1123 | build_int_cst (unsigned_type_node, 1)); | |
1124 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
1125 | ||
1126 | /* Mostly annotate the loop for the vectorizer (the rest is done below). */ | |
1127 | struct loop *loop = alloc_loop (); | |
1128 | cfun->has_force_vectorize_loops = true; | |
1129 | loop->safelen = node->simdclone->simdlen; | |
1130 | loop->force_vectorize = true; | |
1131 | loop->header = body_bb; | |
1132 | ||
1133 | /* Branch around the body if the mask applies. */ | |
1134 | if (node->simdclone->inbranch) | |
1135 | { | |
1136 | gimple_stmt_iterator gsi = gsi_last_bb (loop->header); | |
1137 | tree mask_array | |
1138 | = node->simdclone->args[node->simdclone->nargs - 1].simd_array; | |
1139 | tree mask; | |
1140 | if (node->simdclone->mask_mode != VOIDmode) | |
1141 | { | |
1142 | tree shift_cnt; | |
1143 | if (mask_array == NULL_TREE) | |
1144 | { | |
1145 | tree arg = node->simdclone->args[node->simdclone->nargs | |
1146 | - 1].vector_arg; | |
1147 | mask = get_or_create_ssa_default_def (cfun, arg); | |
1148 | shift_cnt = iter1; | |
1149 | } | |
1150 | else | |
1151 | { | |
1152 | tree maskt = TREE_TYPE (mask_array); | |
1153 | int c = tree_to_uhwi (TYPE_MAX_VALUE (TYPE_DOMAIN (maskt))); | |
1154 | c = node->simdclone->simdlen / (c + 1); | |
1155 | int s = exact_log2 (c); | |
1156 | gcc_assert (s > 0); | |
1157 | c--; | |
1158 | tree idx = make_ssa_name (TREE_TYPE (iter1)); | |
1159 | g = gimple_build_assign (idx, RSHIFT_EXPR, iter1, | |
1160 | build_int_cst (NULL_TREE, s)); | |
1161 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
1162 | mask = make_ssa_name (TREE_TYPE (TREE_TYPE (mask_array))); | |
1163 | tree aref = build4 (ARRAY_REF, | |
1164 | TREE_TYPE (TREE_TYPE (mask_array)), | |
1165 | mask_array, idx, NULL, NULL); | |
1166 | g = gimple_build_assign (mask, aref); | |
1167 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
1168 | shift_cnt = make_ssa_name (TREE_TYPE (iter1)); | |
1169 | g = gimple_build_assign (shift_cnt, BIT_AND_EXPR, iter1, | |
1170 | build_int_cst (TREE_TYPE (iter1), c)); | |
1171 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
1172 | } | |
1173 | g = gimple_build_assign (make_ssa_name (TREE_TYPE (mask)), | |
1174 | RSHIFT_EXPR, mask, shift_cnt); | |
1175 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
1176 | mask = gimple_assign_lhs (g); | |
1177 | g = gimple_build_assign (make_ssa_name (TREE_TYPE (mask)), | |
1178 | BIT_AND_EXPR, mask, | |
1179 | build_int_cst (TREE_TYPE (mask), 1)); | |
1180 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
1181 | mask = gimple_assign_lhs (g); | |
1182 | } | |
1183 | else | |
1184 | { | |
1185 | mask = make_ssa_name (TREE_TYPE (TREE_TYPE (mask_array))); | |
1186 | tree aref = build4 (ARRAY_REF, | |
1187 | TREE_TYPE (TREE_TYPE (mask_array)), | |
1188 | mask_array, iter1, NULL, NULL); | |
1189 | g = gimple_build_assign (mask, aref); | |
1190 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
1191 | int bitsize = GET_MODE_BITSIZE (TYPE_MODE (TREE_TYPE (aref))); | |
1192 | if (!INTEGRAL_TYPE_P (TREE_TYPE (aref))) | |
1193 | { | |
1194 | aref = build1 (VIEW_CONVERT_EXPR, | |
1195 | build_nonstandard_integer_type (bitsize, 0), | |
1196 | mask); | |
1197 | mask = make_ssa_name (TREE_TYPE (aref)); | |
1198 | g = gimple_build_assign (mask, aref); | |
1199 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
1200 | } | |
1201 | } | |
1202 | ||
1203 | g = gimple_build_cond (EQ_EXPR, mask, build_zero_cst (TREE_TYPE (mask)), | |
1204 | NULL, NULL); | |
1205 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
1206 | make_edge (loop->header, incr_bb, EDGE_TRUE_VALUE); | |
1207 | FALLTHRU_EDGE (loop->header)->flags = EDGE_FALSE_VALUE; | |
1208 | } | |
1209 | ||
1210 | /* Generate the condition. */ | |
1211 | g = gimple_build_cond (LT_EXPR, | |
1212 | iter2, | |
1213 | build_int_cst (unsigned_type_node, | |
1214 | node->simdclone->simdlen), | |
1215 | NULL, NULL); | |
1216 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
1217 | e = split_block (incr_bb, gsi_stmt (gsi)); | |
1218 | basic_block latch_bb = e->dest; | |
1219 | basic_block new_exit_bb; | |
1220 | new_exit_bb = split_block_after_labels (latch_bb)->dest; | |
1221 | loop->latch = latch_bb; | |
1222 | ||
1223 | redirect_edge_succ (FALLTHRU_EDGE (latch_bb), body_bb); | |
1224 | ||
1225 | make_edge (incr_bb, new_exit_bb, EDGE_FALSE_VALUE); | |
1226 | /* The successor of incr_bb is already pointing to latch_bb; just | |
1227 | change the flags. | |
1228 | make_edge (incr_bb, latch_bb, EDGE_TRUE_VALUE); */ | |
1229 | FALLTHRU_EDGE (incr_bb)->flags = EDGE_TRUE_VALUE; | |
1230 | ||
1231 | gphi *phi = create_phi_node (iter1, body_bb); | |
1232 | edge preheader_edge = find_edge (entry_bb, body_bb); | |
1233 | edge latch_edge = single_succ_edge (latch_bb); | |
1234 | add_phi_arg (phi, build_zero_cst (unsigned_type_node), preheader_edge, | |
1235 | UNKNOWN_LOCATION); | |
1236 | add_phi_arg (phi, iter2, latch_edge, UNKNOWN_LOCATION); | |
1237 | ||
1238 | /* Generate the new return. */ | |
1239 | gsi = gsi_last_bb (new_exit_bb); | |
1240 | if (retval | |
1241 | && TREE_CODE (retval) == VIEW_CONVERT_EXPR | |
1242 | && TREE_CODE (TREE_OPERAND (retval, 0)) == RESULT_DECL) | |
1243 | retval = TREE_OPERAND (retval, 0); | |
1244 | else if (retval) | |
1245 | { | |
1246 | retval = build1 (VIEW_CONVERT_EXPR, | |
1247 | TREE_TYPE (TREE_TYPE (node->decl)), | |
1248 | retval); | |
1249 | retval = force_gimple_operand_gsi (&gsi, retval, true, NULL, | |
1250 | false, GSI_CONTINUE_LINKING); | |
1251 | } | |
1252 | g = gimple_build_return (retval); | |
1253 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
1254 | ||
1255 | /* Handle aligned clauses by replacing default defs of the aligned | |
1256 | uniform args with __builtin_assume_aligned (arg_N(D), alignment) | |
1257 | lhs. Handle linear by adding PHIs. */ | |
1258 | for (unsigned i = 0; i < node->simdclone->nargs; i++) | |
1259 | if (node->simdclone->args[i].arg_type == SIMD_CLONE_ARG_TYPE_UNIFORM | |
1260 | && (TREE_ADDRESSABLE (node->simdclone->args[i].orig_arg) | |
1261 | || !is_gimple_reg_type | |
1262 | (TREE_TYPE (node->simdclone->args[i].orig_arg)))) | |
1263 | { | |
1264 | tree orig_arg = node->simdclone->args[i].orig_arg; | |
1265 | if (is_gimple_reg_type (TREE_TYPE (orig_arg))) | |
1266 | iter1 = make_ssa_name (TREE_TYPE (orig_arg)); | |
1267 | else | |
1268 | { | |
1269 | iter1 = create_tmp_var_raw (TREE_TYPE (orig_arg)); | |
1270 | gimple_add_tmp_var (iter1); | |
1271 | } | |
1272 | gsi = gsi_after_labels (entry_bb); | |
1273 | g = gimple_build_assign (iter1, orig_arg); | |
1274 | gsi_insert_before (&gsi, g, GSI_NEW_STMT); | |
1275 | gsi = gsi_after_labels (body_bb); | |
1276 | g = gimple_build_assign (orig_arg, iter1); | |
1277 | gsi_insert_before (&gsi, g, GSI_NEW_STMT); | |
1278 | } | |
1279 | else if (node->simdclone->args[i].arg_type == SIMD_CLONE_ARG_TYPE_UNIFORM | |
1280 | && DECL_BY_REFERENCE (node->simdclone->args[i].orig_arg) | |
1281 | && TREE_CODE (TREE_TYPE (node->simdclone->args[i].orig_arg)) | |
1282 | == REFERENCE_TYPE | |
1283 | && TREE_ADDRESSABLE | |
1284 | (TREE_TYPE (TREE_TYPE (node->simdclone->args[i].orig_arg)))) | |
1285 | { | |
1286 | tree orig_arg = node->simdclone->args[i].orig_arg; | |
1287 | tree def = ssa_default_def (cfun, orig_arg); | |
1288 | if (def && !has_zero_uses (def)) | |
1289 | { | |
1290 | iter1 = create_tmp_var_raw (TREE_TYPE (TREE_TYPE (orig_arg))); | |
1291 | gimple_add_tmp_var (iter1); | |
1292 | gsi = gsi_after_labels (entry_bb); | |
1293 | g = gimple_build_assign (iter1, build_simple_mem_ref (def)); | |
1294 | gsi_insert_before (&gsi, g, GSI_NEW_STMT); | |
1295 | gsi = gsi_after_labels (body_bb); | |
1296 | g = gimple_build_assign (build_simple_mem_ref (def), iter1); | |
1297 | gsi_insert_before (&gsi, g, GSI_NEW_STMT); | |
1298 | } | |
1299 | } | |
1300 | else if (node->simdclone->args[i].alignment | |
1301 | && node->simdclone->args[i].arg_type | |
1302 | == SIMD_CLONE_ARG_TYPE_UNIFORM | |
1303 | && (node->simdclone->args[i].alignment | |
1304 | & (node->simdclone->args[i].alignment - 1)) == 0 | |
1305 | && TREE_CODE (TREE_TYPE (node->simdclone->args[i].orig_arg)) | |
1306 | == POINTER_TYPE) | |
1307 | { | |
1308 | unsigned int alignment = node->simdclone->args[i].alignment; | |
1309 | tree orig_arg = node->simdclone->args[i].orig_arg; | |
1310 | tree def = ssa_default_def (cfun, orig_arg); | |
1311 | if (def && !has_zero_uses (def)) | |
1312 | { | |
1313 | tree fn = builtin_decl_explicit (BUILT_IN_ASSUME_ALIGNED); | |
1314 | gimple_seq seq = NULL; | |
1315 | bool need_cvt = false; | |
1316 | gcall *call | |
1317 | = gimple_build_call (fn, 2, def, size_int (alignment)); | |
1318 | g = call; | |
1319 | if (!useless_type_conversion_p (TREE_TYPE (orig_arg), | |
1320 | ptr_type_node)) | |
1321 | need_cvt = true; | |
1322 | tree t = make_ssa_name (need_cvt ? ptr_type_node : orig_arg); | |
1323 | gimple_call_set_lhs (g, t); | |
1324 | gimple_seq_add_stmt_without_update (&seq, g); | |
1325 | if (need_cvt) | |
1326 | { | |
1327 | t = make_ssa_name (orig_arg); | |
1328 | g = gimple_build_assign (t, NOP_EXPR, gimple_call_lhs (g)); | |
1329 | gimple_seq_add_stmt_without_update (&seq, g); | |
1330 | } | |
1331 | gsi_insert_seq_on_edge_immediate | |
1332 | (single_succ_edge (ENTRY_BLOCK_PTR_FOR_FN (cfun)), seq); | |
1333 | ||
1334 | entry_bb = single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun)); | |
1335 | int freq = compute_call_stmt_bb_frequency (current_function_decl, | |
1336 | entry_bb); | |
1337 | node->create_edge (cgraph_node::get_create (fn), | |
1338 | call, entry_bb->count, freq); | |
1339 | ||
1340 | imm_use_iterator iter; | |
1341 | use_operand_p use_p; | |
1342 | gimple *use_stmt; | |
1343 | tree repl = gimple_get_lhs (g); | |
1344 | FOR_EACH_IMM_USE_STMT (use_stmt, iter, def) | |
1345 | if (is_gimple_debug (use_stmt) || use_stmt == call) | |
1346 | continue; | |
1347 | else | |
1348 | FOR_EACH_IMM_USE_ON_STMT (use_p, iter) | |
1349 | SET_USE (use_p, repl); | |
1350 | } | |
1351 | } | |
1352 | else if ((node->simdclone->args[i].arg_type | |
1353 | == SIMD_CLONE_ARG_TYPE_LINEAR_CONSTANT_STEP) | |
1354 | || (node->simdclone->args[i].arg_type | |
1355 | == SIMD_CLONE_ARG_TYPE_LINEAR_REF_CONSTANT_STEP) | |
1356 | || (node->simdclone->args[i].arg_type | |
1357 | == SIMD_CLONE_ARG_TYPE_LINEAR_VARIABLE_STEP) | |
1358 | || (node->simdclone->args[i].arg_type | |
1359 | == SIMD_CLONE_ARG_TYPE_LINEAR_REF_VARIABLE_STEP)) | |
1360 | { | |
1361 | tree orig_arg = node->simdclone->args[i].orig_arg; | |
1362 | gcc_assert (INTEGRAL_TYPE_P (TREE_TYPE (orig_arg)) | |
1363 | || POINTER_TYPE_P (TREE_TYPE (orig_arg))); | |
1364 | tree def = NULL_TREE; | |
1365 | if (TREE_ADDRESSABLE (orig_arg)) | |
1366 | { | |
1367 | def = make_ssa_name (TREE_TYPE (orig_arg)); | |
1368 | iter1 = make_ssa_name (TREE_TYPE (orig_arg)); | |
1369 | iter2 = make_ssa_name (TREE_TYPE (orig_arg)); | |
1370 | gsi = gsi_after_labels (entry_bb); | |
1371 | g = gimple_build_assign (def, orig_arg); | |
1372 | gsi_insert_before (&gsi, g, GSI_NEW_STMT); | |
1373 | } | |
1374 | else | |
1375 | { | |
1376 | def = ssa_default_def (cfun, orig_arg); | |
1377 | if (!def || has_zero_uses (def)) | |
1378 | def = NULL_TREE; | |
1379 | else | |
1380 | { | |
1381 | iter1 = make_ssa_name (orig_arg); | |
1382 | iter2 = make_ssa_name (orig_arg); | |
1383 | } | |
1384 | } | |
1385 | if (def) | |
1386 | { | |
1387 | phi = create_phi_node (iter1, body_bb); | |
1388 | add_phi_arg (phi, def, preheader_edge, UNKNOWN_LOCATION); | |
1389 | add_phi_arg (phi, iter2, latch_edge, UNKNOWN_LOCATION); | |
1390 | enum tree_code code = INTEGRAL_TYPE_P (TREE_TYPE (orig_arg)) | |
1391 | ? PLUS_EXPR : POINTER_PLUS_EXPR; | |
1392 | tree addtype = INTEGRAL_TYPE_P (TREE_TYPE (orig_arg)) | |
1393 | ? TREE_TYPE (orig_arg) : sizetype; | |
1394 | tree addcst = simd_clone_linear_addend (node, i, addtype, | |
1395 | entry_bb); | |
1396 | gsi = gsi_last_bb (incr_bb); | |
1397 | g = gimple_build_assign (iter2, code, iter1, addcst); | |
1398 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
1399 | ||
1400 | imm_use_iterator iter; | |
1401 | use_operand_p use_p; | |
1402 | gimple *use_stmt; | |
1403 | if (TREE_ADDRESSABLE (orig_arg)) | |
1404 | { | |
1405 | gsi = gsi_after_labels (body_bb); | |
1406 | g = gimple_build_assign (orig_arg, iter1); | |
1407 | gsi_insert_before (&gsi, g, GSI_NEW_STMT); | |
1408 | } | |
1409 | else | |
1410 | FOR_EACH_IMM_USE_STMT (use_stmt, iter, def) | |
1411 | if (use_stmt == phi) | |
1412 | continue; | |
1413 | else | |
1414 | FOR_EACH_IMM_USE_ON_STMT (use_p, iter) | |
1415 | SET_USE (use_p, iter1); | |
1416 | } | |
1417 | } | |
1418 | else if (node->simdclone->args[i].arg_type | |
1419 | == SIMD_CLONE_ARG_TYPE_LINEAR_UVAL_CONSTANT_STEP | |
1420 | || (node->simdclone->args[i].arg_type | |
1421 | == SIMD_CLONE_ARG_TYPE_LINEAR_UVAL_VARIABLE_STEP)) | |
1422 | { | |
1423 | tree orig_arg = node->simdclone->args[i].orig_arg; | |
1424 | tree def = ssa_default_def (cfun, orig_arg); | |
1425 | gcc_assert (!TREE_ADDRESSABLE (orig_arg) | |
1426 | && TREE_CODE (TREE_TYPE (orig_arg)) == REFERENCE_TYPE); | |
1427 | if (def && !has_zero_uses (def)) | |
1428 | { | |
1429 | tree rtype = TREE_TYPE (TREE_TYPE (orig_arg)); | |
1430 | iter1 = make_ssa_name (orig_arg); | |
1431 | iter2 = make_ssa_name (orig_arg); | |
1432 | tree iter3 = make_ssa_name (rtype); | |
1433 | tree iter4 = make_ssa_name (rtype); | |
1434 | tree iter5 = make_ssa_name (rtype); | |
1435 | gsi = gsi_after_labels (entry_bb); | |
1436 | gimple *load | |
1437 | = gimple_build_assign (iter3, build_simple_mem_ref (def)); | |
1438 | gsi_insert_before (&gsi, load, GSI_NEW_STMT); | |
1439 | ||
1440 | tree array = node->simdclone->args[i].simd_array; | |
1441 | TREE_ADDRESSABLE (array) = 1; | |
1442 | tree ptr = build_fold_addr_expr (array); | |
1443 | phi = create_phi_node (iter1, body_bb); | |
1444 | add_phi_arg (phi, ptr, preheader_edge, UNKNOWN_LOCATION); | |
1445 | add_phi_arg (phi, iter2, latch_edge, UNKNOWN_LOCATION); | |
1446 | g = gimple_build_assign (iter2, POINTER_PLUS_EXPR, iter1, | |
1447 | TYPE_SIZE_UNIT (TREE_TYPE (iter3))); | |
1448 | gsi = gsi_last_bb (incr_bb); | |
1449 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
1450 | ||
1451 | phi = create_phi_node (iter4, body_bb); | |
1452 | add_phi_arg (phi, iter3, preheader_edge, UNKNOWN_LOCATION); | |
1453 | add_phi_arg (phi, iter5, latch_edge, UNKNOWN_LOCATION); | |
1454 | enum tree_code code = INTEGRAL_TYPE_P (TREE_TYPE (iter3)) | |
1455 | ? PLUS_EXPR : POINTER_PLUS_EXPR; | |
1456 | tree addtype = INTEGRAL_TYPE_P (TREE_TYPE (iter3)) | |
1457 | ? TREE_TYPE (iter3) : sizetype; | |
1458 | tree addcst = simd_clone_linear_addend (node, i, addtype, | |
1459 | entry_bb); | |
1460 | g = gimple_build_assign (iter5, code, iter4, addcst); | |
1461 | gsi = gsi_last_bb (incr_bb); | |
1462 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
1463 | ||
1464 | g = gimple_build_assign (build_simple_mem_ref (iter1), iter4); | |
1465 | gsi = gsi_after_labels (body_bb); | |
1466 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
1467 | ||
1468 | imm_use_iterator iter; | |
1469 | use_operand_p use_p; | |
1470 | gimple *use_stmt; | |
1471 | FOR_EACH_IMM_USE_STMT (use_stmt, iter, def) | |
1472 | if (use_stmt == load) | |
1473 | continue; | |
1474 | else | |
1475 | FOR_EACH_IMM_USE_ON_STMT (use_p, iter) | |
1476 | SET_USE (use_p, iter1); | |
1477 | ||
1478 | if (!TYPE_READONLY (rtype)) | |
1479 | { | |
1480 | tree v = make_ssa_name (rtype); | |
1481 | tree aref = build4 (ARRAY_REF, rtype, array, | |
1482 | size_zero_node, NULL_TREE, | |
1483 | NULL_TREE); | |
1484 | gsi = gsi_after_labels (new_exit_bb); | |
1485 | g = gimple_build_assign (v, aref); | |
1486 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
1487 | g = gimple_build_assign (build_simple_mem_ref (def), v); | |
1488 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
1489 | } | |
1490 | } | |
1491 | } | |
1492 | ||
1493 | calculate_dominance_info (CDI_DOMINATORS); | |
1494 | add_loop (loop, loop->header->loop_father); | |
1495 | update_ssa (TODO_update_ssa); | |
1496 | ||
1497 | pop_cfun (); | |
1498 | } | |
1499 | ||
1500 | /* If the function in NODE is tagged as an elemental SIMD function, | |
1501 | create the appropriate SIMD clones. */ | |
1502 | ||
1503 | static void | |
1504 | expand_simd_clones (struct cgraph_node *node) | |
1505 | { | |
1506 | tree attr = lookup_attribute ("omp declare simd", | |
1507 | DECL_ATTRIBUTES (node->decl)); | |
1508 | if (attr == NULL_TREE | |
1509 | || node->global.inlined_to | |
1510 | || lookup_attribute ("noclone", DECL_ATTRIBUTES (node->decl))) | |
1511 | return; | |
1512 | ||
1513 | /* Ignore | |
1514 | #pragma omp declare simd | |
1515 | extern int foo (); | |
1516 | in C, there we don't know the argument types at all. */ | |
1517 | if (!node->definition | |
1518 | && TYPE_ARG_TYPES (TREE_TYPE (node->decl)) == NULL_TREE) | |
1519 | return; | |
1520 | ||
1521 | /* Call this before creating clone_info, as it might ggc_collect. */ | |
1522 | if (node->definition && node->has_gimple_body_p ()) | |
1523 | node->get_body (); | |
1524 | ||
1525 | do | |
1526 | { | |
1527 | /* Start with parsing the "omp declare simd" attribute(s). */ | |
1528 | bool inbranch_clause_specified; | |
1529 | struct cgraph_simd_clone *clone_info | |
1530 | = simd_clone_clauses_extract (node, TREE_VALUE (attr), | |
1531 | &inbranch_clause_specified); | |
1532 | if (clone_info == NULL) | |
1533 | continue; | |
1534 | ||
1535 | int orig_simdlen = clone_info->simdlen; | |
1536 | tree base_type = simd_clone_compute_base_data_type (node, clone_info); | |
1537 | /* The target can return 0 (no simd clones should be created), | |
1538 | 1 (just one ISA of simd clones should be created) or higher | |
1539 | count of ISA variants. In that case, clone_info is initialized | |
1540 | for the first ISA variant. */ | |
1541 | int count | |
1542 | = targetm.simd_clone.compute_vecsize_and_simdlen (node, clone_info, | |
1543 | base_type, 0); | |
1544 | if (count == 0) | |
1545 | continue; | |
1546 | ||
1547 | /* Loop over all COUNT ISA variants, and if !INBRANCH_CLAUSE_SPECIFIED, | |
1548 | also create one inbranch and one !inbranch clone of it. */ | |
1549 | for (int i = 0; i < count * 2; i++) | |
1550 | { | |
1551 | struct cgraph_simd_clone *clone = clone_info; | |
1552 | if (inbranch_clause_specified && (i & 1) != 0) | |
1553 | continue; | |
1554 | ||
1555 | if (i != 0) | |
1556 | { | |
1557 | clone = simd_clone_struct_alloc (clone_info->nargs | |
1558 | + ((i & 1) != 0)); | |
1559 | simd_clone_struct_copy (clone, clone_info); | |
1560 | /* Undo changes targetm.simd_clone.compute_vecsize_and_simdlen | |
1561 | and simd_clone_adjust_argument_types did to the first | |
1562 | clone's info. */ | |
1563 | clone->nargs -= clone_info->inbranch; | |
1564 | clone->simdlen = orig_simdlen; | |
1565 | /* And call the target hook again to get the right ISA. */ | |
1566 | targetm.simd_clone.compute_vecsize_and_simdlen (node, clone, | |
1567 | base_type, | |
1568 | i / 2); | |
1569 | if ((i & 1) != 0) | |
1570 | clone->inbranch = 1; | |
1571 | } | |
1572 | ||
1573 | /* simd_clone_mangle might fail if such a clone has been created | |
1574 | already. */ | |
1575 | tree id = simd_clone_mangle (node, clone); | |
1576 | if (id == NULL_TREE) | |
1577 | continue; | |
1578 | ||
1579 | /* Only when we are sure we want to create the clone actually | |
1580 | clone the function (or definitions) or create another | |
1581 | extern FUNCTION_DECL (for prototypes without definitions). */ | |
1582 | struct cgraph_node *n = simd_clone_create (node); | |
1583 | if (n == NULL) | |
1584 | continue; | |
1585 | ||
1586 | n->simdclone = clone; | |
1587 | clone->origin = node; | |
1588 | clone->next_clone = NULL; | |
1589 | if (node->simd_clones == NULL) | |
1590 | { | |
1591 | clone->prev_clone = n; | |
1592 | node->simd_clones = n; | |
1593 | } | |
1594 | else | |
1595 | { | |
1596 | clone->prev_clone = node->simd_clones->simdclone->prev_clone; | |
1597 | clone->prev_clone->simdclone->next_clone = n; | |
1598 | node->simd_clones->simdclone->prev_clone = n; | |
1599 | } | |
1600 | symtab->change_decl_assembler_name (n->decl, id); | |
1601 | /* And finally adjust the return type, parameters and for | |
1602 | definitions also function body. */ | |
1603 | if (node->definition) | |
1604 | simd_clone_adjust (n); | |
1605 | else | |
1606 | { | |
1607 | simd_clone_adjust_return_type (n); | |
1608 | simd_clone_adjust_argument_types (n); | |
1609 | } | |
1610 | } | |
1611 | } | |
1612 | while ((attr = lookup_attribute ("omp declare simd", TREE_CHAIN (attr)))); | |
1613 | } | |
1614 | ||
1615 | /* Entry point for IPA simd clone creation pass. */ | |
1616 | ||
1617 | static unsigned int | |
1618 | ipa_omp_simd_clone (void) | |
1619 | { | |
1620 | struct cgraph_node *node; | |
1621 | FOR_EACH_FUNCTION (node) | |
1622 | expand_simd_clones (node); | |
1623 | return 0; | |
1624 | } | |
1625 | ||
1626 | namespace { | |
1627 | ||
1628 | const pass_data pass_data_omp_simd_clone = | |
1629 | { | |
1630 | SIMPLE_IPA_PASS, /* type */ | |
1631 | "simdclone", /* name */ | |
1632 | OPTGROUP_NONE, /* optinfo_flags */ | |
1633 | TV_NONE, /* tv_id */ | |
1634 | ( PROP_ssa | PROP_cfg ), /* properties_required */ | |
1635 | 0, /* properties_provided */ | |
1636 | 0, /* properties_destroyed */ | |
1637 | 0, /* todo_flags_start */ | |
1638 | 0, /* todo_flags_finish */ | |
1639 | }; | |
1640 | ||
1641 | class pass_omp_simd_clone : public simple_ipa_opt_pass | |
1642 | { | |
1643 | public: | |
1644 | pass_omp_simd_clone(gcc::context *ctxt) | |
1645 | : simple_ipa_opt_pass(pass_data_omp_simd_clone, ctxt) | |
1646 | {} | |
1647 | ||
1648 | /* opt_pass methods: */ | |
1649 | virtual bool gate (function *); | |
1650 | virtual unsigned int execute (function *) { return ipa_omp_simd_clone (); } | |
1651 | }; | |
1652 | ||
1653 | bool | |
1654 | pass_omp_simd_clone::gate (function *) | |
1655 | { | |
1656 | return targetm.simd_clone.compute_vecsize_and_simdlen != NULL; | |
1657 | } | |
1658 | ||
1659 | } // anon namespace | |
1660 | ||
1661 | simple_ipa_opt_pass * | |
1662 | make_pass_omp_simd_clone (gcc::context *ctxt) | |
1663 | { | |
1664 | return new pass_omp_simd_clone (ctxt); | |
1665 | } |