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1e8e9920 | 1 | /* Lowering pass for OpenMP directives. Converts OpenMP directives |
2 | into explicit calls to the runtime library (libgomp) and data | |
3 | marshalling to implement data sharing and copying clauses. | |
4 | Contributed by Diego Novillo <dnovillo@redhat.com> | |
5 | ||
3aea1f79 | 6 | Copyright (C) 2005-2014 Free Software Foundation, Inc. |
1e8e9920 | 7 | |
8 | This file is part of GCC. | |
9 | ||
10 | GCC is free software; you can redistribute it and/or modify it under | |
11 | the terms of the GNU General Public License as published by the Free | |
8c4c00c1 | 12 | Software Foundation; either version 3, or (at your option) any later |
1e8e9920 | 13 | version. |
14 | ||
15 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
16 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
17 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
18 | for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
8c4c00c1 | 21 | along with GCC; see the file COPYING3. If not see |
22 | <http://www.gnu.org/licenses/>. */ | |
1e8e9920 | 23 | |
24 | #include "config.h" | |
25 | #include "system.h" | |
26 | #include "coretypes.h" | |
27 | #include "tm.h" | |
28 | #include "tree.h" | |
9ed99284 | 29 | #include "stringpool.h" |
30 | #include "stor-layout.h" | |
1e8e9920 | 31 | #include "rtl.h" |
bc61cadb | 32 | #include "pointer-set.h" |
33 | #include "basic-block.h" | |
34 | #include "tree-ssa-alias.h" | |
35 | #include "internal-fn.h" | |
36 | #include "gimple-fold.h" | |
37 | #include "gimple-expr.h" | |
38 | #include "is-a.h" | |
e795d6e1 | 39 | #include "gimple.h" |
a8783bee | 40 | #include "gimplify.h" |
dcf1a1ec | 41 | #include "gimple-iterator.h" |
e795d6e1 | 42 | #include "gimplify-me.h" |
dcf1a1ec | 43 | #include "gimple-walk.h" |
75a70cf9 | 44 | #include "tree-iterator.h" |
1e8e9920 | 45 | #include "tree-inline.h" |
46 | #include "langhooks.h" | |
852f689e | 47 | #include "diagnostic-core.h" |
073c1fd5 | 48 | #include "gimple-ssa.h" |
49 | #include "cgraph.h" | |
50 | #include "tree-cfg.h" | |
51 | #include "tree-phinodes.h" | |
52 | #include "ssa-iterators.h" | |
53 | #include "tree-ssanames.h" | |
54 | #include "tree-into-ssa.h" | |
9ed99284 | 55 | #include "expr.h" |
073c1fd5 | 56 | #include "tree-dfa.h" |
69ee5dbb | 57 | #include "tree-ssa.h" |
1e8e9920 | 58 | #include "flags.h" |
59 | #include "function.h" | |
60 | #include "expr.h" | |
1e8e9920 | 61 | #include "tree-pass.h" |
1e8e9920 | 62 | #include "except.h" |
e3022db7 | 63 | #include "splay-tree.h" |
cb7f680b | 64 | #include "optabs.h" |
65 | #include "cfgloop.h" | |
3d483a94 | 66 | #include "target.h" |
7740abd8 | 67 | #include "omp-low.h" |
424a4a92 | 68 | #include "gimple-low.h" |
69 | #include "tree-cfgcleanup.h" | |
d09768a4 | 70 | #include "pretty-print.h" |
71 | #include "ipa-prop.h" | |
e797f49f | 72 | #include "tree-nested.h" |
d09768a4 | 73 | #include "tree-eh.h" |
1e8e9920 | 74 | |
75a70cf9 | 75 | |
48e1416a | 76 | /* Lowering of OpenMP parallel and workshare constructs proceeds in two |
1e8e9920 | 77 | phases. The first phase scans the function looking for OMP statements |
78 | and then for variables that must be replaced to satisfy data sharing | |
79 | clauses. The second phase expands code for the constructs, as well as | |
334ec2d8 | 80 | re-gimplifying things when variables have been replaced with complex |
1e8e9920 | 81 | expressions. |
82 | ||
d134bccc | 83 | Final code generation is done by pass_expand_omp. The flowgraph is |
84 | scanned for parallel regions which are then moved to a new | |
85 | function, to be invoked by the thread library. */ | |
1e8e9920 | 86 | |
7740abd8 | 87 | /* Parallel region information. Every parallel and workshare |
88 | directive is enclosed between two markers, the OMP_* directive | |
89 | and a corresponding OMP_RETURN statement. */ | |
90 | ||
91 | struct omp_region | |
92 | { | |
93 | /* The enclosing region. */ | |
94 | struct omp_region *outer; | |
95 | ||
96 | /* First child region. */ | |
97 | struct omp_region *inner; | |
98 | ||
99 | /* Next peer region. */ | |
100 | struct omp_region *next; | |
101 | ||
102 | /* Block containing the omp directive as its last stmt. */ | |
103 | basic_block entry; | |
104 | ||
105 | /* Block containing the OMP_RETURN as its last stmt. */ | |
106 | basic_block exit; | |
107 | ||
108 | /* Block containing the OMP_CONTINUE as its last stmt. */ | |
109 | basic_block cont; | |
110 | ||
111 | /* If this is a combined parallel+workshare region, this is a list | |
112 | of additional arguments needed by the combined parallel+workshare | |
113 | library call. */ | |
114 | vec<tree, va_gc> *ws_args; | |
115 | ||
116 | /* The code for the omp directive of this region. */ | |
117 | enum gimple_code type; | |
118 | ||
119 | /* Schedule kind, only used for OMP_FOR type regions. */ | |
120 | enum omp_clause_schedule_kind sched_kind; | |
121 | ||
122 | /* True if this is a combined parallel+workshare region. */ | |
123 | bool is_combined_parallel; | |
124 | }; | |
125 | ||
1e8e9920 | 126 | /* Context structure. Used to store information about each parallel |
127 | directive in the code. */ | |
128 | ||
129 | typedef struct omp_context | |
130 | { | |
131 | /* This field must be at the beginning, as we do "inheritance": Some | |
132 | callback functions for tree-inline.c (e.g., omp_copy_decl) | |
133 | receive a copy_body_data pointer that is up-casted to an | |
134 | omp_context pointer. */ | |
135 | copy_body_data cb; | |
136 | ||
137 | /* The tree of contexts corresponding to the encountered constructs. */ | |
138 | struct omp_context *outer; | |
75a70cf9 | 139 | gimple stmt; |
1e8e9920 | 140 | |
48e1416a | 141 | /* Map variables to fields in a structure that allows communication |
1e8e9920 | 142 | between sending and receiving threads. */ |
143 | splay_tree field_map; | |
144 | tree record_type; | |
145 | tree sender_decl; | |
146 | tree receiver_decl; | |
147 | ||
fd6481cf | 148 | /* These are used just by task contexts, if task firstprivate fn is |
149 | needed. srecord_type is used to communicate from the thread | |
150 | that encountered the task construct to task firstprivate fn, | |
151 | record_type is allocated by GOMP_task, initialized by task firstprivate | |
152 | fn and passed to the task body fn. */ | |
153 | splay_tree sfield_map; | |
154 | tree srecord_type; | |
155 | ||
1e8e9920 | 156 | /* A chain of variables to add to the top-level block surrounding the |
157 | construct. In the case of a parallel, this is in the child function. */ | |
158 | tree block_vars; | |
159 | ||
bc7bff74 | 160 | /* Label to which GOMP_cancel{,llation_point} and explicit and implicit |
161 | barriers should jump to during omplower pass. */ | |
162 | tree cancel_label; | |
163 | ||
1e8e9920 | 164 | /* What to do with variables with implicitly determined sharing |
165 | attributes. */ | |
166 | enum omp_clause_default_kind default_kind; | |
167 | ||
168 | /* Nesting depth of this context. Used to beautify error messages re | |
169 | invalid gotos. The outermost ctx is depth 1, with depth 0 being | |
170 | reserved for the main body of the function. */ | |
171 | int depth; | |
172 | ||
1e8e9920 | 173 | /* True if this parallel directive is nested within another. */ |
174 | bool is_nested; | |
bc7bff74 | 175 | |
176 | /* True if this construct can be cancelled. */ | |
177 | bool cancellable; | |
1e8e9920 | 178 | } omp_context; |
179 | ||
180 | ||
fd6481cf | 181 | struct omp_for_data_loop |
182 | { | |
183 | tree v, n1, n2, step; | |
184 | enum tree_code cond_code; | |
185 | }; | |
186 | ||
773c5ba7 | 187 | /* A structure describing the main elements of a parallel loop. */ |
1e8e9920 | 188 | |
773c5ba7 | 189 | struct omp_for_data |
1e8e9920 | 190 | { |
fd6481cf | 191 | struct omp_for_data_loop loop; |
75a70cf9 | 192 | tree chunk_size; |
193 | gimple for_stmt; | |
fd6481cf | 194 | tree pre, iter_type; |
195 | int collapse; | |
1e8e9920 | 196 | bool have_nowait, have_ordered; |
197 | enum omp_clause_schedule_kind sched_kind; | |
fd6481cf | 198 | struct omp_for_data_loop *loops; |
1e8e9920 | 199 | }; |
200 | ||
773c5ba7 | 201 | |
1e8e9920 | 202 | static splay_tree all_contexts; |
fd6481cf | 203 | static int taskreg_nesting_level; |
bc7bff74 | 204 | static int target_nesting_level; |
7740abd8 | 205 | static struct omp_region *root_omp_region; |
fd6481cf | 206 | static bitmap task_shared_vars; |
1e8e9920 | 207 | |
ab129075 | 208 | static void scan_omp (gimple_seq *, omp_context *); |
75a70cf9 | 209 | static tree scan_omp_1_op (tree *, int *, void *); |
210 | ||
211 | #define WALK_SUBSTMTS \ | |
212 | case GIMPLE_BIND: \ | |
213 | case GIMPLE_TRY: \ | |
214 | case GIMPLE_CATCH: \ | |
215 | case GIMPLE_EH_FILTER: \ | |
4c0315d0 | 216 | case GIMPLE_TRANSACTION: \ |
75a70cf9 | 217 | /* The sub-statements for these should be walked. */ \ |
218 | *handled_ops_p = false; \ | |
219 | break; | |
220 | ||
221 | /* Convenience function for calling scan_omp_1_op on tree operands. */ | |
222 | ||
223 | static inline tree | |
224 | scan_omp_op (tree *tp, omp_context *ctx) | |
225 | { | |
226 | struct walk_stmt_info wi; | |
227 | ||
228 | memset (&wi, 0, sizeof (wi)); | |
229 | wi.info = ctx; | |
230 | wi.want_locations = true; | |
231 | ||
232 | return walk_tree (tp, scan_omp_1_op, &wi, NULL); | |
233 | } | |
234 | ||
e3a19533 | 235 | static void lower_omp (gimple_seq *, omp_context *); |
f49d7bb5 | 236 | static tree lookup_decl_in_outer_ctx (tree, omp_context *); |
237 | static tree maybe_lookup_decl_in_outer_ctx (tree, omp_context *); | |
1e8e9920 | 238 | |
239 | /* Find an OpenMP clause of type KIND within CLAUSES. */ | |
240 | ||
79acaae1 | 241 | tree |
590c3166 | 242 | find_omp_clause (tree clauses, enum omp_clause_code kind) |
1e8e9920 | 243 | { |
244 | for (; clauses ; clauses = OMP_CLAUSE_CHAIN (clauses)) | |
55d6e7cd | 245 | if (OMP_CLAUSE_CODE (clauses) == kind) |
1e8e9920 | 246 | return clauses; |
247 | ||
248 | return NULL_TREE; | |
249 | } | |
250 | ||
251 | /* Return true if CTX is for an omp parallel. */ | |
252 | ||
253 | static inline bool | |
254 | is_parallel_ctx (omp_context *ctx) | |
255 | { | |
75a70cf9 | 256 | return gimple_code (ctx->stmt) == GIMPLE_OMP_PARALLEL; |
1e8e9920 | 257 | } |
258 | ||
773c5ba7 | 259 | |
fd6481cf | 260 | /* Return true if CTX is for an omp task. */ |
261 | ||
262 | static inline bool | |
263 | is_task_ctx (omp_context *ctx) | |
264 | { | |
75a70cf9 | 265 | return gimple_code (ctx->stmt) == GIMPLE_OMP_TASK; |
fd6481cf | 266 | } |
267 | ||
268 | ||
269 | /* Return true if CTX is for an omp parallel or omp task. */ | |
270 | ||
271 | static inline bool | |
272 | is_taskreg_ctx (omp_context *ctx) | |
273 | { | |
75a70cf9 | 274 | return gimple_code (ctx->stmt) == GIMPLE_OMP_PARALLEL |
275 | || gimple_code (ctx->stmt) == GIMPLE_OMP_TASK; | |
fd6481cf | 276 | } |
277 | ||
278 | ||
773c5ba7 | 279 | /* Return true if REGION is a combined parallel+workshare region. */ |
1e8e9920 | 280 | |
281 | static inline bool | |
773c5ba7 | 282 | is_combined_parallel (struct omp_region *region) |
283 | { | |
284 | return region->is_combined_parallel; | |
285 | } | |
286 | ||
287 | ||
288 | /* Extract the header elements of parallel loop FOR_STMT and store | |
289 | them into *FD. */ | |
290 | ||
291 | static void | |
75a70cf9 | 292 | extract_omp_for_data (gimple for_stmt, struct omp_for_data *fd, |
fd6481cf | 293 | struct omp_for_data_loop *loops) |
773c5ba7 | 294 | { |
fd6481cf | 295 | tree t, var, *collapse_iter, *collapse_count; |
296 | tree count = NULL_TREE, iter_type = long_integer_type_node; | |
297 | struct omp_for_data_loop *loop; | |
298 | int i; | |
299 | struct omp_for_data_loop dummy_loop; | |
389dd41b | 300 | location_t loc = gimple_location (for_stmt); |
f2697631 | 301 | bool simd = gimple_omp_for_kind (for_stmt) & GF_OMP_FOR_KIND_SIMD; |
bc7bff74 | 302 | bool distribute = gimple_omp_for_kind (for_stmt) |
303 | == GF_OMP_FOR_KIND_DISTRIBUTE; | |
773c5ba7 | 304 | |
305 | fd->for_stmt = for_stmt; | |
306 | fd->pre = NULL; | |
75a70cf9 | 307 | fd->collapse = gimple_omp_for_collapse (for_stmt); |
fd6481cf | 308 | if (fd->collapse > 1) |
309 | fd->loops = loops; | |
310 | else | |
311 | fd->loops = &fd->loop; | |
773c5ba7 | 312 | |
bc7bff74 | 313 | fd->have_nowait = distribute || simd; |
314 | fd->have_ordered = false; | |
773c5ba7 | 315 | fd->sched_kind = OMP_CLAUSE_SCHEDULE_STATIC; |
316 | fd->chunk_size = NULL_TREE; | |
fd6481cf | 317 | collapse_iter = NULL; |
318 | collapse_count = NULL; | |
773c5ba7 | 319 | |
75a70cf9 | 320 | for (t = gimple_omp_for_clauses (for_stmt); t ; t = OMP_CLAUSE_CHAIN (t)) |
55d6e7cd | 321 | switch (OMP_CLAUSE_CODE (t)) |
773c5ba7 | 322 | { |
323 | case OMP_CLAUSE_NOWAIT: | |
324 | fd->have_nowait = true; | |
325 | break; | |
326 | case OMP_CLAUSE_ORDERED: | |
327 | fd->have_ordered = true; | |
328 | break; | |
329 | case OMP_CLAUSE_SCHEDULE: | |
bc7bff74 | 330 | gcc_assert (!distribute); |
773c5ba7 | 331 | fd->sched_kind = OMP_CLAUSE_SCHEDULE_KIND (t); |
332 | fd->chunk_size = OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (t); | |
333 | break; | |
bc7bff74 | 334 | case OMP_CLAUSE_DIST_SCHEDULE: |
335 | gcc_assert (distribute); | |
336 | fd->chunk_size = OMP_CLAUSE_DIST_SCHEDULE_CHUNK_EXPR (t); | |
337 | break; | |
fd6481cf | 338 | case OMP_CLAUSE_COLLAPSE: |
339 | if (fd->collapse > 1) | |
340 | { | |
341 | collapse_iter = &OMP_CLAUSE_COLLAPSE_ITERVAR (t); | |
342 | collapse_count = &OMP_CLAUSE_COLLAPSE_COUNT (t); | |
343 | } | |
773c5ba7 | 344 | default: |
345 | break; | |
346 | } | |
347 | ||
fd6481cf | 348 | /* FIXME: for now map schedule(auto) to schedule(static). |
349 | There should be analysis to determine whether all iterations | |
350 | are approximately the same amount of work (then schedule(static) | |
bde357c8 | 351 | is best) or if it varies (then schedule(dynamic,N) is better). */ |
fd6481cf | 352 | if (fd->sched_kind == OMP_CLAUSE_SCHEDULE_AUTO) |
353 | { | |
354 | fd->sched_kind = OMP_CLAUSE_SCHEDULE_STATIC; | |
355 | gcc_assert (fd->chunk_size == NULL); | |
356 | } | |
357 | gcc_assert (fd->collapse == 1 || collapse_iter != NULL); | |
773c5ba7 | 358 | if (fd->sched_kind == OMP_CLAUSE_SCHEDULE_RUNTIME) |
359 | gcc_assert (fd->chunk_size == NULL); | |
360 | else if (fd->chunk_size == NULL) | |
361 | { | |
362 | /* We only need to compute a default chunk size for ordered | |
363 | static loops and dynamic loops. */ | |
fd6481cf | 364 | if (fd->sched_kind != OMP_CLAUSE_SCHEDULE_STATIC |
bc7bff74 | 365 | || fd->have_ordered) |
773c5ba7 | 366 | fd->chunk_size = (fd->sched_kind == OMP_CLAUSE_SCHEDULE_STATIC) |
367 | ? integer_zero_node : integer_one_node; | |
368 | } | |
fd6481cf | 369 | |
370 | for (i = 0; i < fd->collapse; i++) | |
371 | { | |
372 | if (fd->collapse == 1) | |
373 | loop = &fd->loop; | |
374 | else if (loops != NULL) | |
375 | loop = loops + i; | |
376 | else | |
377 | loop = &dummy_loop; | |
378 | ||
75a70cf9 | 379 | loop->v = gimple_omp_for_index (for_stmt, i); |
fd6481cf | 380 | gcc_assert (SSA_VAR_P (loop->v)); |
381 | gcc_assert (TREE_CODE (TREE_TYPE (loop->v)) == INTEGER_TYPE | |
382 | || TREE_CODE (TREE_TYPE (loop->v)) == POINTER_TYPE); | |
383 | var = TREE_CODE (loop->v) == SSA_NAME ? SSA_NAME_VAR (loop->v) : loop->v; | |
75a70cf9 | 384 | loop->n1 = gimple_omp_for_initial (for_stmt, i); |
fd6481cf | 385 | |
75a70cf9 | 386 | loop->cond_code = gimple_omp_for_cond (for_stmt, i); |
387 | loop->n2 = gimple_omp_for_final (for_stmt, i); | |
fd6481cf | 388 | switch (loop->cond_code) |
389 | { | |
390 | case LT_EXPR: | |
391 | case GT_EXPR: | |
392 | break; | |
f2697631 | 393 | case NE_EXPR: |
394 | gcc_assert (gimple_omp_for_kind (for_stmt) | |
395 | == GF_OMP_FOR_KIND_CILKSIMD); | |
396 | break; | |
fd6481cf | 397 | case LE_EXPR: |
398 | if (POINTER_TYPE_P (TREE_TYPE (loop->n2))) | |
2cc66f2a | 399 | loop->n2 = fold_build_pointer_plus_hwi_loc (loc, loop->n2, 1); |
fd6481cf | 400 | else |
389dd41b | 401 | loop->n2 = fold_build2_loc (loc, |
402 | PLUS_EXPR, TREE_TYPE (loop->n2), loop->n2, | |
fd6481cf | 403 | build_int_cst (TREE_TYPE (loop->n2), 1)); |
404 | loop->cond_code = LT_EXPR; | |
405 | break; | |
406 | case GE_EXPR: | |
407 | if (POINTER_TYPE_P (TREE_TYPE (loop->n2))) | |
2cc66f2a | 408 | loop->n2 = fold_build_pointer_plus_hwi_loc (loc, loop->n2, -1); |
fd6481cf | 409 | else |
389dd41b | 410 | loop->n2 = fold_build2_loc (loc, |
411 | MINUS_EXPR, TREE_TYPE (loop->n2), loop->n2, | |
fd6481cf | 412 | build_int_cst (TREE_TYPE (loop->n2), 1)); |
413 | loop->cond_code = GT_EXPR; | |
414 | break; | |
415 | default: | |
416 | gcc_unreachable (); | |
417 | } | |
418 | ||
75a70cf9 | 419 | t = gimple_omp_for_incr (for_stmt, i); |
fd6481cf | 420 | gcc_assert (TREE_OPERAND (t, 0) == var); |
421 | switch (TREE_CODE (t)) | |
422 | { | |
423 | case PLUS_EXPR: | |
fd6481cf | 424 | loop->step = TREE_OPERAND (t, 1); |
425 | break; | |
85d86b55 | 426 | case POINTER_PLUS_EXPR: |
427 | loop->step = fold_convert (ssizetype, TREE_OPERAND (t, 1)); | |
428 | break; | |
fd6481cf | 429 | case MINUS_EXPR: |
430 | loop->step = TREE_OPERAND (t, 1); | |
389dd41b | 431 | loop->step = fold_build1_loc (loc, |
432 | NEGATE_EXPR, TREE_TYPE (loop->step), | |
fd6481cf | 433 | loop->step); |
434 | break; | |
435 | default: | |
436 | gcc_unreachable (); | |
437 | } | |
438 | ||
bc7bff74 | 439 | if (simd |
440 | || (fd->sched_kind == OMP_CLAUSE_SCHEDULE_STATIC | |
441 | && !fd->have_ordered)) | |
3d483a94 | 442 | { |
443 | if (fd->collapse == 1) | |
444 | iter_type = TREE_TYPE (loop->v); | |
445 | else if (i == 0 | |
446 | || TYPE_PRECISION (iter_type) | |
447 | < TYPE_PRECISION (TREE_TYPE (loop->v))) | |
448 | iter_type | |
449 | = build_nonstandard_integer_type | |
bc7bff74 | 450 | (TYPE_PRECISION (TREE_TYPE (loop->v)), 1); |
3d483a94 | 451 | } |
452 | else if (iter_type != long_long_unsigned_type_node) | |
fd6481cf | 453 | { |
454 | if (POINTER_TYPE_P (TREE_TYPE (loop->v))) | |
455 | iter_type = long_long_unsigned_type_node; | |
456 | else if (TYPE_UNSIGNED (TREE_TYPE (loop->v)) | |
457 | && TYPE_PRECISION (TREE_TYPE (loop->v)) | |
458 | >= TYPE_PRECISION (iter_type)) | |
459 | { | |
460 | tree n; | |
461 | ||
462 | if (loop->cond_code == LT_EXPR) | |
389dd41b | 463 | n = fold_build2_loc (loc, |
464 | PLUS_EXPR, TREE_TYPE (loop->v), | |
fd6481cf | 465 | loop->n2, loop->step); |
466 | else | |
467 | n = loop->n1; | |
468 | if (TREE_CODE (n) != INTEGER_CST | |
469 | || tree_int_cst_lt (TYPE_MAX_VALUE (iter_type), n)) | |
470 | iter_type = long_long_unsigned_type_node; | |
471 | } | |
472 | else if (TYPE_PRECISION (TREE_TYPE (loop->v)) | |
473 | > TYPE_PRECISION (iter_type)) | |
474 | { | |
475 | tree n1, n2; | |
476 | ||
477 | if (loop->cond_code == LT_EXPR) | |
478 | { | |
479 | n1 = loop->n1; | |
389dd41b | 480 | n2 = fold_build2_loc (loc, |
481 | PLUS_EXPR, TREE_TYPE (loop->v), | |
fd6481cf | 482 | loop->n2, loop->step); |
483 | } | |
484 | else | |
485 | { | |
389dd41b | 486 | n1 = fold_build2_loc (loc, |
487 | MINUS_EXPR, TREE_TYPE (loop->v), | |
fd6481cf | 488 | loop->n2, loop->step); |
489 | n2 = loop->n1; | |
490 | } | |
491 | if (TREE_CODE (n1) != INTEGER_CST | |
492 | || TREE_CODE (n2) != INTEGER_CST | |
493 | || !tree_int_cst_lt (TYPE_MIN_VALUE (iter_type), n1) | |
494 | || !tree_int_cst_lt (n2, TYPE_MAX_VALUE (iter_type))) | |
495 | iter_type = long_long_unsigned_type_node; | |
496 | } | |
497 | } | |
498 | ||
499 | if (collapse_count && *collapse_count == NULL) | |
500 | { | |
8e6b4515 | 501 | t = fold_binary (loop->cond_code, boolean_type_node, |
502 | fold_convert (TREE_TYPE (loop->v), loop->n1), | |
503 | fold_convert (TREE_TYPE (loop->v), loop->n2)); | |
504 | if (t && integer_zerop (t)) | |
505 | count = build_zero_cst (long_long_unsigned_type_node); | |
506 | else if ((i == 0 || count != NULL_TREE) | |
507 | && TREE_CODE (TREE_TYPE (loop->v)) == INTEGER_TYPE | |
508 | && TREE_CONSTANT (loop->n1) | |
509 | && TREE_CONSTANT (loop->n2) | |
510 | && TREE_CODE (loop->step) == INTEGER_CST) | |
fd6481cf | 511 | { |
512 | tree itype = TREE_TYPE (loop->v); | |
513 | ||
514 | if (POINTER_TYPE_P (itype)) | |
3cea8318 | 515 | itype = signed_type_for (itype); |
fd6481cf | 516 | t = build_int_cst (itype, (loop->cond_code == LT_EXPR ? -1 : 1)); |
389dd41b | 517 | t = fold_build2_loc (loc, |
518 | PLUS_EXPR, itype, | |
519 | fold_convert_loc (loc, itype, loop->step), t); | |
520 | t = fold_build2_loc (loc, PLUS_EXPR, itype, t, | |
521 | fold_convert_loc (loc, itype, loop->n2)); | |
522 | t = fold_build2_loc (loc, MINUS_EXPR, itype, t, | |
523 | fold_convert_loc (loc, itype, loop->n1)); | |
fd6481cf | 524 | if (TYPE_UNSIGNED (itype) && loop->cond_code == GT_EXPR) |
389dd41b | 525 | t = fold_build2_loc (loc, TRUNC_DIV_EXPR, itype, |
526 | fold_build1_loc (loc, NEGATE_EXPR, itype, t), | |
527 | fold_build1_loc (loc, NEGATE_EXPR, itype, | |
528 | fold_convert_loc (loc, itype, | |
529 | loop->step))); | |
fd6481cf | 530 | else |
389dd41b | 531 | t = fold_build2_loc (loc, TRUNC_DIV_EXPR, itype, t, |
532 | fold_convert_loc (loc, itype, loop->step)); | |
533 | t = fold_convert_loc (loc, long_long_unsigned_type_node, t); | |
fd6481cf | 534 | if (count != NULL_TREE) |
389dd41b | 535 | count = fold_build2_loc (loc, |
536 | MULT_EXPR, long_long_unsigned_type_node, | |
fd6481cf | 537 | count, t); |
538 | else | |
539 | count = t; | |
540 | if (TREE_CODE (count) != INTEGER_CST) | |
541 | count = NULL_TREE; | |
542 | } | |
8e6b4515 | 543 | else if (count && !integer_zerop (count)) |
fd6481cf | 544 | count = NULL_TREE; |
545 | } | |
546 | } | |
547 | ||
3d483a94 | 548 | if (count |
bc7bff74 | 549 | && !simd |
550 | && (fd->sched_kind != OMP_CLAUSE_SCHEDULE_STATIC | |
551 | || fd->have_ordered)) | |
fd6481cf | 552 | { |
553 | if (!tree_int_cst_lt (count, TYPE_MAX_VALUE (long_integer_type_node))) | |
554 | iter_type = long_long_unsigned_type_node; | |
555 | else | |
556 | iter_type = long_integer_type_node; | |
557 | } | |
558 | else if (collapse_iter && *collapse_iter != NULL) | |
559 | iter_type = TREE_TYPE (*collapse_iter); | |
560 | fd->iter_type = iter_type; | |
561 | if (collapse_iter && *collapse_iter == NULL) | |
562 | *collapse_iter = create_tmp_var (iter_type, ".iter"); | |
563 | if (collapse_count && *collapse_count == NULL) | |
564 | { | |
565 | if (count) | |
389dd41b | 566 | *collapse_count = fold_convert_loc (loc, iter_type, count); |
fd6481cf | 567 | else |
568 | *collapse_count = create_tmp_var (iter_type, ".count"); | |
569 | } | |
570 | ||
571 | if (fd->collapse > 1) | |
572 | { | |
573 | fd->loop.v = *collapse_iter; | |
574 | fd->loop.n1 = build_int_cst (TREE_TYPE (fd->loop.v), 0); | |
575 | fd->loop.n2 = *collapse_count; | |
576 | fd->loop.step = build_int_cst (TREE_TYPE (fd->loop.v), 1); | |
577 | fd->loop.cond_code = LT_EXPR; | |
578 | } | |
773c5ba7 | 579 | } |
580 | ||
581 | ||
582 | /* Given two blocks PAR_ENTRY_BB and WS_ENTRY_BB such that WS_ENTRY_BB | |
583 | is the immediate dominator of PAR_ENTRY_BB, return true if there | |
584 | are no data dependencies that would prevent expanding the parallel | |
585 | directive at PAR_ENTRY_BB as a combined parallel+workshare region. | |
586 | ||
587 | When expanding a combined parallel+workshare region, the call to | |
588 | the child function may need additional arguments in the case of | |
75a70cf9 | 589 | GIMPLE_OMP_FOR regions. In some cases, these arguments are |
590 | computed out of variables passed in from the parent to the child | |
591 | via 'struct .omp_data_s'. For instance: | |
773c5ba7 | 592 | |
593 | #pragma omp parallel for schedule (guided, i * 4) | |
594 | for (j ...) | |
595 | ||
596 | Is lowered into: | |
597 | ||
598 | # BLOCK 2 (PAR_ENTRY_BB) | |
599 | .omp_data_o.i = i; | |
600 | #pragma omp parallel [child fn: bar.omp_fn.0 ( ..., D.1598) | |
48e1416a | 601 | |
773c5ba7 | 602 | # BLOCK 3 (WS_ENTRY_BB) |
603 | .omp_data_i = &.omp_data_o; | |
604 | D.1667 = .omp_data_i->i; | |
605 | D.1598 = D.1667 * 4; | |
606 | #pragma omp for schedule (guided, D.1598) | |
607 | ||
608 | When we outline the parallel region, the call to the child function | |
609 | 'bar.omp_fn.0' will need the value D.1598 in its argument list, but | |
610 | that value is computed *after* the call site. So, in principle we | |
611 | cannot do the transformation. | |
612 | ||
613 | To see whether the code in WS_ENTRY_BB blocks the combined | |
614 | parallel+workshare call, we collect all the variables used in the | |
75a70cf9 | 615 | GIMPLE_OMP_FOR header check whether they appear on the LHS of any |
773c5ba7 | 616 | statement in WS_ENTRY_BB. If so, then we cannot emit the combined |
617 | call. | |
618 | ||
619 | FIXME. If we had the SSA form built at this point, we could merely | |
620 | hoist the code in block 3 into block 2 and be done with it. But at | |
621 | this point we don't have dataflow information and though we could | |
622 | hack something up here, it is really not worth the aggravation. */ | |
623 | ||
624 | static bool | |
f018d957 | 625 | workshare_safe_to_combine_p (basic_block ws_entry_bb) |
773c5ba7 | 626 | { |
627 | struct omp_for_data fd; | |
f018d957 | 628 | gimple ws_stmt = last_stmt (ws_entry_bb); |
773c5ba7 | 629 | |
75a70cf9 | 630 | if (gimple_code (ws_stmt) == GIMPLE_OMP_SECTIONS) |
773c5ba7 | 631 | return true; |
632 | ||
75a70cf9 | 633 | gcc_assert (gimple_code (ws_stmt) == GIMPLE_OMP_FOR); |
773c5ba7 | 634 | |
fd6481cf | 635 | extract_omp_for_data (ws_stmt, &fd, NULL); |
636 | ||
637 | if (fd.collapse > 1 && TREE_CODE (fd.loop.n2) != INTEGER_CST) | |
638 | return false; | |
639 | if (fd.iter_type != long_integer_type_node) | |
640 | return false; | |
773c5ba7 | 641 | |
642 | /* FIXME. We give up too easily here. If any of these arguments | |
643 | are not constants, they will likely involve variables that have | |
644 | been mapped into fields of .omp_data_s for sharing with the child | |
645 | function. With appropriate data flow, it would be possible to | |
646 | see through this. */ | |
fd6481cf | 647 | if (!is_gimple_min_invariant (fd.loop.n1) |
648 | || !is_gimple_min_invariant (fd.loop.n2) | |
649 | || !is_gimple_min_invariant (fd.loop.step) | |
773c5ba7 | 650 | || (fd.chunk_size && !is_gimple_min_invariant (fd.chunk_size))) |
651 | return false; | |
652 | ||
653 | return true; | |
654 | } | |
655 | ||
656 | ||
657 | /* Collect additional arguments needed to emit a combined | |
658 | parallel+workshare call. WS_STMT is the workshare directive being | |
659 | expanded. */ | |
660 | ||
f1f41a6c | 661 | static vec<tree, va_gc> * |
bc7bff74 | 662 | get_ws_args_for (gimple par_stmt, gimple ws_stmt) |
773c5ba7 | 663 | { |
664 | tree t; | |
389dd41b | 665 | location_t loc = gimple_location (ws_stmt); |
f1f41a6c | 666 | vec<tree, va_gc> *ws_args; |
773c5ba7 | 667 | |
75a70cf9 | 668 | if (gimple_code (ws_stmt) == GIMPLE_OMP_FOR) |
773c5ba7 | 669 | { |
670 | struct omp_for_data fd; | |
bc7bff74 | 671 | tree n1, n2; |
773c5ba7 | 672 | |
fd6481cf | 673 | extract_omp_for_data (ws_stmt, &fd, NULL); |
bc7bff74 | 674 | n1 = fd.loop.n1; |
675 | n2 = fd.loop.n2; | |
676 | ||
677 | if (gimple_omp_for_combined_into_p (ws_stmt)) | |
678 | { | |
679 | tree innerc | |
680 | = find_omp_clause (gimple_omp_parallel_clauses (par_stmt), | |
681 | OMP_CLAUSE__LOOPTEMP_); | |
682 | gcc_assert (innerc); | |
683 | n1 = OMP_CLAUSE_DECL (innerc); | |
684 | innerc = find_omp_clause (OMP_CLAUSE_CHAIN (innerc), | |
685 | OMP_CLAUSE__LOOPTEMP_); | |
686 | gcc_assert (innerc); | |
687 | n2 = OMP_CLAUSE_DECL (innerc); | |
688 | } | |
773c5ba7 | 689 | |
f1f41a6c | 690 | vec_alloc (ws_args, 3 + (fd.chunk_size != 0)); |
773c5ba7 | 691 | |
bc7bff74 | 692 | t = fold_convert_loc (loc, long_integer_type_node, n1); |
f1f41a6c | 693 | ws_args->quick_push (t); |
773c5ba7 | 694 | |
bc7bff74 | 695 | t = fold_convert_loc (loc, long_integer_type_node, n2); |
f1f41a6c | 696 | ws_args->quick_push (t); |
773c5ba7 | 697 | |
414c3a2c | 698 | t = fold_convert_loc (loc, long_integer_type_node, fd.loop.step); |
f1f41a6c | 699 | ws_args->quick_push (t); |
414c3a2c | 700 | |
701 | if (fd.chunk_size) | |
702 | { | |
703 | t = fold_convert_loc (loc, long_integer_type_node, fd.chunk_size); | |
f1f41a6c | 704 | ws_args->quick_push (t); |
414c3a2c | 705 | } |
773c5ba7 | 706 | |
707 | return ws_args; | |
708 | } | |
75a70cf9 | 709 | else if (gimple_code (ws_stmt) == GIMPLE_OMP_SECTIONS) |
773c5ba7 | 710 | { |
ac6e3339 | 711 | /* Number of sections is equal to the number of edges from the |
75a70cf9 | 712 | GIMPLE_OMP_SECTIONS_SWITCH statement, except for the one to |
713 | the exit of the sections region. */ | |
714 | basic_block bb = single_succ (gimple_bb (ws_stmt)); | |
ac6e3339 | 715 | t = build_int_cst (unsigned_type_node, EDGE_COUNT (bb->succs) - 1); |
f1f41a6c | 716 | vec_alloc (ws_args, 1); |
717 | ws_args->quick_push (t); | |
414c3a2c | 718 | return ws_args; |
773c5ba7 | 719 | } |
720 | ||
721 | gcc_unreachable (); | |
722 | } | |
723 | ||
724 | ||
725 | /* Discover whether REGION is a combined parallel+workshare region. */ | |
726 | ||
727 | static void | |
728 | determine_parallel_type (struct omp_region *region) | |
1e8e9920 | 729 | { |
773c5ba7 | 730 | basic_block par_entry_bb, par_exit_bb; |
731 | basic_block ws_entry_bb, ws_exit_bb; | |
732 | ||
03ed154b | 733 | if (region == NULL || region->inner == NULL |
ac6e3339 | 734 | || region->exit == NULL || region->inner->exit == NULL |
735 | || region->inner->cont == NULL) | |
773c5ba7 | 736 | return; |
737 | ||
738 | /* We only support parallel+for and parallel+sections. */ | |
75a70cf9 | 739 | if (region->type != GIMPLE_OMP_PARALLEL |
740 | || (region->inner->type != GIMPLE_OMP_FOR | |
741 | && region->inner->type != GIMPLE_OMP_SECTIONS)) | |
773c5ba7 | 742 | return; |
743 | ||
744 | /* Check for perfect nesting PAR_ENTRY_BB -> WS_ENTRY_BB and | |
745 | WS_EXIT_BB -> PAR_EXIT_BB. */ | |
61e47ac8 | 746 | par_entry_bb = region->entry; |
747 | par_exit_bb = region->exit; | |
748 | ws_entry_bb = region->inner->entry; | |
749 | ws_exit_bb = region->inner->exit; | |
773c5ba7 | 750 | |
751 | if (single_succ (par_entry_bb) == ws_entry_bb | |
752 | && single_succ (ws_exit_bb) == par_exit_bb | |
f018d957 | 753 | && workshare_safe_to_combine_p (ws_entry_bb) |
75a70cf9 | 754 | && (gimple_omp_parallel_combined_p (last_stmt (par_entry_bb)) |
de7ef844 | 755 | || (last_and_only_stmt (ws_entry_bb) |
756 | && last_and_only_stmt (par_exit_bb)))) | |
773c5ba7 | 757 | { |
bc7bff74 | 758 | gimple par_stmt = last_stmt (par_entry_bb); |
75a70cf9 | 759 | gimple ws_stmt = last_stmt (ws_entry_bb); |
61e47ac8 | 760 | |
75a70cf9 | 761 | if (region->inner->type == GIMPLE_OMP_FOR) |
773c5ba7 | 762 | { |
763 | /* If this is a combined parallel loop, we need to determine | |
764 | whether or not to use the combined library calls. There | |
765 | are two cases where we do not apply the transformation: | |
766 | static loops and any kind of ordered loop. In the first | |
767 | case, we already open code the loop so there is no need | |
768 | to do anything else. In the latter case, the combined | |
769 | parallel loop call would still need extra synchronization | |
770 | to implement ordered semantics, so there would not be any | |
771 | gain in using the combined call. */ | |
75a70cf9 | 772 | tree clauses = gimple_omp_for_clauses (ws_stmt); |
773c5ba7 | 773 | tree c = find_omp_clause (clauses, OMP_CLAUSE_SCHEDULE); |
774 | if (c == NULL | |
775 | || OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_STATIC | |
776 | || find_omp_clause (clauses, OMP_CLAUSE_ORDERED)) | |
777 | { | |
778 | region->is_combined_parallel = false; | |
779 | region->inner->is_combined_parallel = false; | |
780 | return; | |
781 | } | |
782 | } | |
783 | ||
784 | region->is_combined_parallel = true; | |
785 | region->inner->is_combined_parallel = true; | |
bc7bff74 | 786 | region->ws_args = get_ws_args_for (par_stmt, ws_stmt); |
773c5ba7 | 787 | } |
1e8e9920 | 788 | } |
789 | ||
773c5ba7 | 790 | |
1e8e9920 | 791 | /* Return true if EXPR is variable sized. */ |
792 | ||
793 | static inline bool | |
1f1872fd | 794 | is_variable_sized (const_tree expr) |
1e8e9920 | 795 | { |
796 | return !TREE_CONSTANT (TYPE_SIZE_UNIT (TREE_TYPE (expr))); | |
797 | } | |
798 | ||
799 | /* Return true if DECL is a reference type. */ | |
800 | ||
801 | static inline bool | |
802 | is_reference (tree decl) | |
803 | { | |
804 | return lang_hooks.decls.omp_privatize_by_reference (decl); | |
805 | } | |
806 | ||
807 | /* Lookup variables in the decl or field splay trees. The "maybe" form | |
808 | allows for the variable form to not have been entered, otherwise we | |
809 | assert that the variable must have been entered. */ | |
810 | ||
811 | static inline tree | |
812 | lookup_decl (tree var, omp_context *ctx) | |
813 | { | |
e3022db7 | 814 | tree *n; |
815 | n = (tree *) pointer_map_contains (ctx->cb.decl_map, var); | |
816 | return *n; | |
1e8e9920 | 817 | } |
818 | ||
819 | static inline tree | |
e8a588af | 820 | maybe_lookup_decl (const_tree var, omp_context *ctx) |
1e8e9920 | 821 | { |
e3022db7 | 822 | tree *n; |
823 | n = (tree *) pointer_map_contains (ctx->cb.decl_map, var); | |
824 | return n ? *n : NULL_TREE; | |
1e8e9920 | 825 | } |
826 | ||
827 | static inline tree | |
828 | lookup_field (tree var, omp_context *ctx) | |
829 | { | |
830 | splay_tree_node n; | |
831 | n = splay_tree_lookup (ctx->field_map, (splay_tree_key) var); | |
832 | return (tree) n->value; | |
833 | } | |
834 | ||
fd6481cf | 835 | static inline tree |
836 | lookup_sfield (tree var, omp_context *ctx) | |
837 | { | |
838 | splay_tree_node n; | |
839 | n = splay_tree_lookup (ctx->sfield_map | |
840 | ? ctx->sfield_map : ctx->field_map, | |
841 | (splay_tree_key) var); | |
842 | return (tree) n->value; | |
843 | } | |
844 | ||
1e8e9920 | 845 | static inline tree |
846 | maybe_lookup_field (tree var, omp_context *ctx) | |
847 | { | |
848 | splay_tree_node n; | |
849 | n = splay_tree_lookup (ctx->field_map, (splay_tree_key) var); | |
850 | return n ? (tree) n->value : NULL_TREE; | |
851 | } | |
852 | ||
e8a588af | 853 | /* Return true if DECL should be copied by pointer. SHARED_CTX is |
854 | the parallel context if DECL is to be shared. */ | |
1e8e9920 | 855 | |
856 | static bool | |
fd6481cf | 857 | use_pointer_for_field (tree decl, omp_context *shared_ctx) |
1e8e9920 | 858 | { |
859 | if (AGGREGATE_TYPE_P (TREE_TYPE (decl))) | |
860 | return true; | |
861 | ||
554f2707 | 862 | /* We can only use copy-in/copy-out semantics for shared variables |
1e8e9920 | 863 | when we know the value is not accessible from an outer scope. */ |
e8a588af | 864 | if (shared_ctx) |
1e8e9920 | 865 | { |
866 | /* ??? Trivially accessible from anywhere. But why would we even | |
867 | be passing an address in this case? Should we simply assert | |
868 | this to be false, or should we have a cleanup pass that removes | |
869 | these from the list of mappings? */ | |
870 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)) | |
871 | return true; | |
872 | ||
873 | /* For variables with DECL_HAS_VALUE_EXPR_P set, we cannot tell | |
874 | without analyzing the expression whether or not its location | |
875 | is accessible to anyone else. In the case of nested parallel | |
876 | regions it certainly may be. */ | |
df2c34fc | 877 | if (TREE_CODE (decl) != RESULT_DECL && DECL_HAS_VALUE_EXPR_P (decl)) |
1e8e9920 | 878 | return true; |
879 | ||
880 | /* Do not use copy-in/copy-out for variables that have their | |
881 | address taken. */ | |
882 | if (TREE_ADDRESSABLE (decl)) | |
883 | return true; | |
e8a588af | 884 | |
b8214689 | 885 | /* lower_send_shared_vars only uses copy-in, but not copy-out |
886 | for these. */ | |
887 | if (TREE_READONLY (decl) | |
888 | || ((TREE_CODE (decl) == RESULT_DECL | |
889 | || TREE_CODE (decl) == PARM_DECL) | |
890 | && DECL_BY_REFERENCE (decl))) | |
891 | return false; | |
892 | ||
e8a588af | 893 | /* Disallow copy-in/out in nested parallel if |
894 | decl is shared in outer parallel, otherwise | |
895 | each thread could store the shared variable | |
896 | in its own copy-in location, making the | |
897 | variable no longer really shared. */ | |
b8214689 | 898 | if (shared_ctx->is_nested) |
e8a588af | 899 | { |
900 | omp_context *up; | |
901 | ||
902 | for (up = shared_ctx->outer; up; up = up->outer) | |
0cb159ec | 903 | if (is_taskreg_ctx (up) && maybe_lookup_decl (decl, up)) |
e8a588af | 904 | break; |
905 | ||
0cb159ec | 906 | if (up) |
e8a588af | 907 | { |
908 | tree c; | |
909 | ||
75a70cf9 | 910 | for (c = gimple_omp_taskreg_clauses (up->stmt); |
e8a588af | 911 | c; c = OMP_CLAUSE_CHAIN (c)) |
912 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_SHARED | |
913 | && OMP_CLAUSE_DECL (c) == decl) | |
914 | break; | |
915 | ||
916 | if (c) | |
784ad964 | 917 | goto maybe_mark_addressable_and_ret; |
e8a588af | 918 | } |
919 | } | |
fd6481cf | 920 | |
b8214689 | 921 | /* For tasks avoid using copy-in/out. As tasks can be |
fd6481cf | 922 | deferred or executed in different thread, when GOMP_task |
923 | returns, the task hasn't necessarily terminated. */ | |
b8214689 | 924 | if (is_task_ctx (shared_ctx)) |
fd6481cf | 925 | { |
784ad964 | 926 | tree outer; |
927 | maybe_mark_addressable_and_ret: | |
928 | outer = maybe_lookup_decl_in_outer_ctx (decl, shared_ctx); | |
fd6481cf | 929 | if (is_gimple_reg (outer)) |
930 | { | |
931 | /* Taking address of OUTER in lower_send_shared_vars | |
932 | might need regimplification of everything that uses the | |
933 | variable. */ | |
934 | if (!task_shared_vars) | |
935 | task_shared_vars = BITMAP_ALLOC (NULL); | |
936 | bitmap_set_bit (task_shared_vars, DECL_UID (outer)); | |
937 | TREE_ADDRESSABLE (outer) = 1; | |
938 | } | |
939 | return true; | |
940 | } | |
1e8e9920 | 941 | } |
942 | ||
943 | return false; | |
944 | } | |
945 | ||
79acaae1 | 946 | /* Construct a new automatic decl similar to VAR. */ |
947 | ||
948 | static tree | |
949 | omp_copy_decl_2 (tree var, tree name, tree type, omp_context *ctx) | |
950 | { | |
951 | tree copy = copy_var_decl (var, name, type); | |
952 | ||
953 | DECL_CONTEXT (copy) = current_function_decl; | |
1767a056 | 954 | DECL_CHAIN (copy) = ctx->block_vars; |
1e8e9920 | 955 | ctx->block_vars = copy; |
956 | ||
957 | return copy; | |
958 | } | |
959 | ||
960 | static tree | |
961 | omp_copy_decl_1 (tree var, omp_context *ctx) | |
962 | { | |
963 | return omp_copy_decl_2 (var, DECL_NAME (var), TREE_TYPE (var), ctx); | |
964 | } | |
965 | ||
445d06b6 | 966 | /* Build COMPONENT_REF and set TREE_THIS_VOLATILE and TREE_READONLY on it |
967 | as appropriate. */ | |
968 | static tree | |
969 | omp_build_component_ref (tree obj, tree field) | |
970 | { | |
971 | tree ret = build3 (COMPONENT_REF, TREE_TYPE (field), obj, field, NULL); | |
972 | if (TREE_THIS_VOLATILE (field)) | |
973 | TREE_THIS_VOLATILE (ret) |= 1; | |
974 | if (TREE_READONLY (field)) | |
975 | TREE_READONLY (ret) |= 1; | |
976 | return ret; | |
977 | } | |
978 | ||
1e8e9920 | 979 | /* Build tree nodes to access the field for VAR on the receiver side. */ |
980 | ||
981 | static tree | |
982 | build_receiver_ref (tree var, bool by_ref, omp_context *ctx) | |
983 | { | |
984 | tree x, field = lookup_field (var, ctx); | |
985 | ||
986 | /* If the receiver record type was remapped in the child function, | |
987 | remap the field into the new record type. */ | |
988 | x = maybe_lookup_field (field, ctx); | |
989 | if (x != NULL) | |
990 | field = x; | |
991 | ||
182cf5a9 | 992 | x = build_simple_mem_ref (ctx->receiver_decl); |
445d06b6 | 993 | x = omp_build_component_ref (x, field); |
1e8e9920 | 994 | if (by_ref) |
182cf5a9 | 995 | x = build_simple_mem_ref (x); |
1e8e9920 | 996 | |
997 | return x; | |
998 | } | |
999 | ||
1000 | /* Build tree nodes to access VAR in the scope outer to CTX. In the case | |
1001 | of a parallel, this is a component reference; for workshare constructs | |
1002 | this is some variable. */ | |
1003 | ||
1004 | static tree | |
1005 | build_outer_var_ref (tree var, omp_context *ctx) | |
1006 | { | |
1007 | tree x; | |
1008 | ||
f49d7bb5 | 1009 | if (is_global_var (maybe_lookup_decl_in_outer_ctx (var, ctx))) |
1e8e9920 | 1010 | x = var; |
1011 | else if (is_variable_sized (var)) | |
1012 | { | |
1013 | x = TREE_OPERAND (DECL_VALUE_EXPR (var), 0); | |
1014 | x = build_outer_var_ref (x, ctx); | |
182cf5a9 | 1015 | x = build_simple_mem_ref (x); |
1e8e9920 | 1016 | } |
fd6481cf | 1017 | else if (is_taskreg_ctx (ctx)) |
1e8e9920 | 1018 | { |
e8a588af | 1019 | bool by_ref = use_pointer_for_field (var, NULL); |
1e8e9920 | 1020 | x = build_receiver_ref (var, by_ref, ctx); |
1021 | } | |
3d483a94 | 1022 | else if (gimple_code (ctx->stmt) == GIMPLE_OMP_FOR |
f2697631 | 1023 | && gimple_omp_for_kind (ctx->stmt) & GF_OMP_FOR_KIND_SIMD) |
3d483a94 | 1024 | { |
1025 | /* #pragma omp simd isn't a worksharing construct, and can reference even | |
1026 | private vars in its linear etc. clauses. */ | |
1027 | x = NULL_TREE; | |
1028 | if (ctx->outer && is_taskreg_ctx (ctx)) | |
1029 | x = lookup_decl (var, ctx->outer); | |
1030 | else if (ctx->outer) | |
84cb1020 | 1031 | x = maybe_lookup_decl_in_outer_ctx (var, ctx); |
3d483a94 | 1032 | if (x == NULL_TREE) |
1033 | x = var; | |
1034 | } | |
1e8e9920 | 1035 | else if (ctx->outer) |
1036 | x = lookup_decl (var, ctx->outer); | |
9438af57 | 1037 | else if (is_reference (var)) |
1038 | /* This can happen with orphaned constructs. If var is reference, it is | |
1039 | possible it is shared and as such valid. */ | |
1040 | x = var; | |
1e8e9920 | 1041 | else |
1042 | gcc_unreachable (); | |
1043 | ||
1044 | if (is_reference (var)) | |
182cf5a9 | 1045 | x = build_simple_mem_ref (x); |
1e8e9920 | 1046 | |
1047 | return x; | |
1048 | } | |
1049 | ||
1050 | /* Build tree nodes to access the field for VAR on the sender side. */ | |
1051 | ||
1052 | static tree | |
1053 | build_sender_ref (tree var, omp_context *ctx) | |
1054 | { | |
fd6481cf | 1055 | tree field = lookup_sfield (var, ctx); |
445d06b6 | 1056 | return omp_build_component_ref (ctx->sender_decl, field); |
1e8e9920 | 1057 | } |
1058 | ||
1059 | /* Add a new field for VAR inside the structure CTX->SENDER_DECL. */ | |
1060 | ||
1061 | static void | |
fd6481cf | 1062 | install_var_field (tree var, bool by_ref, int mask, omp_context *ctx) |
1e8e9920 | 1063 | { |
fd6481cf | 1064 | tree field, type, sfield = NULL_TREE; |
1e8e9920 | 1065 | |
fd6481cf | 1066 | gcc_assert ((mask & 1) == 0 |
1067 | || !splay_tree_lookup (ctx->field_map, (splay_tree_key) var)); | |
1068 | gcc_assert ((mask & 2) == 0 || !ctx->sfield_map | |
1069 | || !splay_tree_lookup (ctx->sfield_map, (splay_tree_key) var)); | |
1e8e9920 | 1070 | |
1071 | type = TREE_TYPE (var); | |
bc7bff74 | 1072 | if (mask & 4) |
1073 | { | |
1074 | gcc_assert (TREE_CODE (type) == ARRAY_TYPE); | |
1075 | type = build_pointer_type (build_pointer_type (type)); | |
1076 | } | |
1077 | else if (by_ref) | |
1e8e9920 | 1078 | type = build_pointer_type (type); |
fd6481cf | 1079 | else if ((mask & 3) == 1 && is_reference (var)) |
1080 | type = TREE_TYPE (type); | |
1e8e9920 | 1081 | |
e60a6f7b | 1082 | field = build_decl (DECL_SOURCE_LOCATION (var), |
1083 | FIELD_DECL, DECL_NAME (var), type); | |
1e8e9920 | 1084 | |
1085 | /* Remember what variable this field was created for. This does have a | |
1086 | side effect of making dwarf2out ignore this member, so for helpful | |
1087 | debugging we clear it later in delete_omp_context. */ | |
1088 | DECL_ABSTRACT_ORIGIN (field) = var; | |
fd6481cf | 1089 | if (type == TREE_TYPE (var)) |
1090 | { | |
1091 | DECL_ALIGN (field) = DECL_ALIGN (var); | |
1092 | DECL_USER_ALIGN (field) = DECL_USER_ALIGN (var); | |
1093 | TREE_THIS_VOLATILE (field) = TREE_THIS_VOLATILE (var); | |
1094 | } | |
1095 | else | |
1096 | DECL_ALIGN (field) = TYPE_ALIGN (type); | |
1e8e9920 | 1097 | |
fd6481cf | 1098 | if ((mask & 3) == 3) |
1099 | { | |
1100 | insert_field_into_struct (ctx->record_type, field); | |
1101 | if (ctx->srecord_type) | |
1102 | { | |
e60a6f7b | 1103 | sfield = build_decl (DECL_SOURCE_LOCATION (var), |
1104 | FIELD_DECL, DECL_NAME (var), type); | |
fd6481cf | 1105 | DECL_ABSTRACT_ORIGIN (sfield) = var; |
1106 | DECL_ALIGN (sfield) = DECL_ALIGN (field); | |
1107 | DECL_USER_ALIGN (sfield) = DECL_USER_ALIGN (field); | |
1108 | TREE_THIS_VOLATILE (sfield) = TREE_THIS_VOLATILE (field); | |
1109 | insert_field_into_struct (ctx->srecord_type, sfield); | |
1110 | } | |
1111 | } | |
1112 | else | |
1113 | { | |
1114 | if (ctx->srecord_type == NULL_TREE) | |
1115 | { | |
1116 | tree t; | |
1117 | ||
1118 | ctx->srecord_type = lang_hooks.types.make_type (RECORD_TYPE); | |
1119 | ctx->sfield_map = splay_tree_new (splay_tree_compare_pointers, 0, 0); | |
1120 | for (t = TYPE_FIELDS (ctx->record_type); t ; t = TREE_CHAIN (t)) | |
1121 | { | |
e60a6f7b | 1122 | sfield = build_decl (DECL_SOURCE_LOCATION (var), |
1123 | FIELD_DECL, DECL_NAME (t), TREE_TYPE (t)); | |
fd6481cf | 1124 | DECL_ABSTRACT_ORIGIN (sfield) = DECL_ABSTRACT_ORIGIN (t); |
1125 | insert_field_into_struct (ctx->srecord_type, sfield); | |
1126 | splay_tree_insert (ctx->sfield_map, | |
1127 | (splay_tree_key) DECL_ABSTRACT_ORIGIN (t), | |
1128 | (splay_tree_value) sfield); | |
1129 | } | |
1130 | } | |
1131 | sfield = field; | |
1132 | insert_field_into_struct ((mask & 1) ? ctx->record_type | |
1133 | : ctx->srecord_type, field); | |
1134 | } | |
1e8e9920 | 1135 | |
fd6481cf | 1136 | if (mask & 1) |
1137 | splay_tree_insert (ctx->field_map, (splay_tree_key) var, | |
1138 | (splay_tree_value) field); | |
1139 | if ((mask & 2) && ctx->sfield_map) | |
1140 | splay_tree_insert (ctx->sfield_map, (splay_tree_key) var, | |
1141 | (splay_tree_value) sfield); | |
1e8e9920 | 1142 | } |
1143 | ||
1144 | static tree | |
1145 | install_var_local (tree var, omp_context *ctx) | |
1146 | { | |
1147 | tree new_var = omp_copy_decl_1 (var, ctx); | |
1148 | insert_decl_map (&ctx->cb, var, new_var); | |
1149 | return new_var; | |
1150 | } | |
1151 | ||
1152 | /* Adjust the replacement for DECL in CTX for the new context. This means | |
1153 | copying the DECL_VALUE_EXPR, and fixing up the type. */ | |
1154 | ||
1155 | static void | |
1156 | fixup_remapped_decl (tree decl, omp_context *ctx, bool private_debug) | |
1157 | { | |
1158 | tree new_decl, size; | |
1159 | ||
1160 | new_decl = lookup_decl (decl, ctx); | |
1161 | ||
1162 | TREE_TYPE (new_decl) = remap_type (TREE_TYPE (decl), &ctx->cb); | |
1163 | ||
1164 | if ((!TREE_CONSTANT (DECL_SIZE (new_decl)) || private_debug) | |
1165 | && DECL_HAS_VALUE_EXPR_P (decl)) | |
1166 | { | |
1167 | tree ve = DECL_VALUE_EXPR (decl); | |
75a70cf9 | 1168 | walk_tree (&ve, copy_tree_body_r, &ctx->cb, NULL); |
1e8e9920 | 1169 | SET_DECL_VALUE_EXPR (new_decl, ve); |
1170 | DECL_HAS_VALUE_EXPR_P (new_decl) = 1; | |
1171 | } | |
1172 | ||
1173 | if (!TREE_CONSTANT (DECL_SIZE (new_decl))) | |
1174 | { | |
1175 | size = remap_decl (DECL_SIZE (decl), &ctx->cb); | |
1176 | if (size == error_mark_node) | |
1177 | size = TYPE_SIZE (TREE_TYPE (new_decl)); | |
1178 | DECL_SIZE (new_decl) = size; | |
1179 | ||
1180 | size = remap_decl (DECL_SIZE_UNIT (decl), &ctx->cb); | |
1181 | if (size == error_mark_node) | |
1182 | size = TYPE_SIZE_UNIT (TREE_TYPE (new_decl)); | |
1183 | DECL_SIZE_UNIT (new_decl) = size; | |
1184 | } | |
1185 | } | |
1186 | ||
1187 | /* The callback for remap_decl. Search all containing contexts for a | |
1188 | mapping of the variable; this avoids having to duplicate the splay | |
1189 | tree ahead of time. We know a mapping doesn't already exist in the | |
1190 | given context. Create new mappings to implement default semantics. */ | |
1191 | ||
1192 | static tree | |
1193 | omp_copy_decl (tree var, copy_body_data *cb) | |
1194 | { | |
1195 | omp_context *ctx = (omp_context *) cb; | |
1196 | tree new_var; | |
1197 | ||
1e8e9920 | 1198 | if (TREE_CODE (var) == LABEL_DECL) |
1199 | { | |
e60a6f7b | 1200 | new_var = create_artificial_label (DECL_SOURCE_LOCATION (var)); |
773c5ba7 | 1201 | DECL_CONTEXT (new_var) = current_function_decl; |
1e8e9920 | 1202 | insert_decl_map (&ctx->cb, var, new_var); |
1203 | return new_var; | |
1204 | } | |
1205 | ||
fd6481cf | 1206 | while (!is_taskreg_ctx (ctx)) |
1e8e9920 | 1207 | { |
1208 | ctx = ctx->outer; | |
1209 | if (ctx == NULL) | |
1210 | return var; | |
1211 | new_var = maybe_lookup_decl (var, ctx); | |
1212 | if (new_var) | |
1213 | return new_var; | |
1214 | } | |
1215 | ||
f49d7bb5 | 1216 | if (is_global_var (var) || decl_function_context (var) != ctx->cb.src_fn) |
1217 | return var; | |
1218 | ||
1e8e9920 | 1219 | return error_mark_node; |
1220 | } | |
1221 | ||
773c5ba7 | 1222 | |
773c5ba7 | 1223 | /* Debugging dumps for parallel regions. */ |
1224 | void dump_omp_region (FILE *, struct omp_region *, int); | |
1225 | void debug_omp_region (struct omp_region *); | |
1226 | void debug_all_omp_regions (void); | |
1227 | ||
1228 | /* Dump the parallel region tree rooted at REGION. */ | |
1229 | ||
1230 | void | |
1231 | dump_omp_region (FILE *file, struct omp_region *region, int indent) | |
1232 | { | |
61e47ac8 | 1233 | fprintf (file, "%*sbb %d: %s\n", indent, "", region->entry->index, |
75a70cf9 | 1234 | gimple_code_name[region->type]); |
773c5ba7 | 1235 | |
1236 | if (region->inner) | |
1237 | dump_omp_region (file, region->inner, indent + 4); | |
1238 | ||
61e47ac8 | 1239 | if (region->cont) |
1240 | { | |
75a70cf9 | 1241 | fprintf (file, "%*sbb %d: GIMPLE_OMP_CONTINUE\n", indent, "", |
61e47ac8 | 1242 | region->cont->index); |
1243 | } | |
48e1416a | 1244 | |
773c5ba7 | 1245 | if (region->exit) |
75a70cf9 | 1246 | fprintf (file, "%*sbb %d: GIMPLE_OMP_RETURN\n", indent, "", |
61e47ac8 | 1247 | region->exit->index); |
773c5ba7 | 1248 | else |
61e47ac8 | 1249 | fprintf (file, "%*s[no exit marker]\n", indent, ""); |
773c5ba7 | 1250 | |
1251 | if (region->next) | |
61e47ac8 | 1252 | dump_omp_region (file, region->next, indent); |
773c5ba7 | 1253 | } |
1254 | ||
4b987fac | 1255 | DEBUG_FUNCTION void |
773c5ba7 | 1256 | debug_omp_region (struct omp_region *region) |
1257 | { | |
1258 | dump_omp_region (stderr, region, 0); | |
1259 | } | |
1260 | ||
4b987fac | 1261 | DEBUG_FUNCTION void |
773c5ba7 | 1262 | debug_all_omp_regions (void) |
1263 | { | |
1264 | dump_omp_region (stderr, root_omp_region, 0); | |
1265 | } | |
1266 | ||
1267 | ||
1268 | /* Create a new parallel region starting at STMT inside region PARENT. */ | |
1269 | ||
7740abd8 | 1270 | static struct omp_region * |
75a70cf9 | 1271 | new_omp_region (basic_block bb, enum gimple_code type, |
1272 | struct omp_region *parent) | |
773c5ba7 | 1273 | { |
4077bf7a | 1274 | struct omp_region *region = XCNEW (struct omp_region); |
773c5ba7 | 1275 | |
1276 | region->outer = parent; | |
61e47ac8 | 1277 | region->entry = bb; |
1278 | region->type = type; | |
773c5ba7 | 1279 | |
1280 | if (parent) | |
1281 | { | |
1282 | /* This is a nested region. Add it to the list of inner | |
1283 | regions in PARENT. */ | |
1284 | region->next = parent->inner; | |
1285 | parent->inner = region; | |
1286 | } | |
61e47ac8 | 1287 | else |
773c5ba7 | 1288 | { |
1289 | /* This is a toplevel region. Add it to the list of toplevel | |
1290 | regions in ROOT_OMP_REGION. */ | |
1291 | region->next = root_omp_region; | |
1292 | root_omp_region = region; | |
1293 | } | |
61e47ac8 | 1294 | |
1295 | return region; | |
1296 | } | |
1297 | ||
1298 | /* Release the memory associated with the region tree rooted at REGION. */ | |
1299 | ||
1300 | static void | |
1301 | free_omp_region_1 (struct omp_region *region) | |
1302 | { | |
1303 | struct omp_region *i, *n; | |
1304 | ||
1305 | for (i = region->inner; i ; i = n) | |
773c5ba7 | 1306 | { |
61e47ac8 | 1307 | n = i->next; |
1308 | free_omp_region_1 (i); | |
773c5ba7 | 1309 | } |
1310 | ||
61e47ac8 | 1311 | free (region); |
1312 | } | |
773c5ba7 | 1313 | |
61e47ac8 | 1314 | /* Release the memory for the entire omp region tree. */ |
1315 | ||
1316 | void | |
1317 | free_omp_regions (void) | |
1318 | { | |
1319 | struct omp_region *r, *n; | |
1320 | for (r = root_omp_region; r ; r = n) | |
1321 | { | |
1322 | n = r->next; | |
1323 | free_omp_region_1 (r); | |
1324 | } | |
1325 | root_omp_region = NULL; | |
773c5ba7 | 1326 | } |
1327 | ||
1328 | ||
1e8e9920 | 1329 | /* Create a new context, with OUTER_CTX being the surrounding context. */ |
1330 | ||
1331 | static omp_context * | |
75a70cf9 | 1332 | new_omp_context (gimple stmt, omp_context *outer_ctx) |
1e8e9920 | 1333 | { |
1334 | omp_context *ctx = XCNEW (omp_context); | |
1335 | ||
1336 | splay_tree_insert (all_contexts, (splay_tree_key) stmt, | |
1337 | (splay_tree_value) ctx); | |
1338 | ctx->stmt = stmt; | |
1339 | ||
1340 | if (outer_ctx) | |
1341 | { | |
1342 | ctx->outer = outer_ctx; | |
1343 | ctx->cb = outer_ctx->cb; | |
1344 | ctx->cb.block = NULL; | |
1345 | ctx->depth = outer_ctx->depth + 1; | |
1346 | } | |
1347 | else | |
1348 | { | |
1349 | ctx->cb.src_fn = current_function_decl; | |
1350 | ctx->cb.dst_fn = current_function_decl; | |
53f79206 | 1351 | ctx->cb.src_node = cgraph_get_node (current_function_decl); |
1352 | gcc_checking_assert (ctx->cb.src_node); | |
1e8e9920 | 1353 | ctx->cb.dst_node = ctx->cb.src_node; |
1354 | ctx->cb.src_cfun = cfun; | |
1355 | ctx->cb.copy_decl = omp_copy_decl; | |
e38def9c | 1356 | ctx->cb.eh_lp_nr = 0; |
1e8e9920 | 1357 | ctx->cb.transform_call_graph_edges = CB_CGE_MOVE; |
1358 | ctx->depth = 1; | |
1359 | } | |
1360 | ||
e3022db7 | 1361 | ctx->cb.decl_map = pointer_map_create (); |
1e8e9920 | 1362 | |
1363 | return ctx; | |
1364 | } | |
1365 | ||
75a70cf9 | 1366 | static gimple_seq maybe_catch_exception (gimple_seq); |
f6430caa | 1367 | |
1368 | /* Finalize task copyfn. */ | |
1369 | ||
1370 | static void | |
75a70cf9 | 1371 | finalize_task_copyfn (gimple task_stmt) |
f6430caa | 1372 | { |
1373 | struct function *child_cfun; | |
9078126c | 1374 | tree child_fn; |
e3a19533 | 1375 | gimple_seq seq = NULL, new_seq; |
75a70cf9 | 1376 | gimple bind; |
f6430caa | 1377 | |
75a70cf9 | 1378 | child_fn = gimple_omp_task_copy_fn (task_stmt); |
f6430caa | 1379 | if (child_fn == NULL_TREE) |
1380 | return; | |
1381 | ||
1382 | child_cfun = DECL_STRUCT_FUNCTION (child_fn); | |
82b40354 | 1383 | DECL_STRUCT_FUNCTION (child_fn)->curr_properties = cfun->curr_properties; |
f6430caa | 1384 | |
f6430caa | 1385 | push_cfun (child_cfun); |
7e3aae05 | 1386 | bind = gimplify_body (child_fn, false); |
75a70cf9 | 1387 | gimple_seq_add_stmt (&seq, bind); |
1388 | new_seq = maybe_catch_exception (seq); | |
1389 | if (new_seq != seq) | |
1390 | { | |
1391 | bind = gimple_build_bind (NULL, new_seq, NULL); | |
e3a19533 | 1392 | seq = NULL; |
75a70cf9 | 1393 | gimple_seq_add_stmt (&seq, bind); |
1394 | } | |
1395 | gimple_set_body (child_fn, seq); | |
f6430caa | 1396 | pop_cfun (); |
f6430caa | 1397 | |
82b40354 | 1398 | /* Inform the callgraph about the new function. */ |
f6430caa | 1399 | cgraph_add_new_function (child_fn, false); |
1400 | } | |
1401 | ||
1e8e9920 | 1402 | /* Destroy a omp_context data structures. Called through the splay tree |
1403 | value delete callback. */ | |
1404 | ||
1405 | static void | |
1406 | delete_omp_context (splay_tree_value value) | |
1407 | { | |
1408 | omp_context *ctx = (omp_context *) value; | |
1409 | ||
e3022db7 | 1410 | pointer_map_destroy (ctx->cb.decl_map); |
1e8e9920 | 1411 | |
1412 | if (ctx->field_map) | |
1413 | splay_tree_delete (ctx->field_map); | |
fd6481cf | 1414 | if (ctx->sfield_map) |
1415 | splay_tree_delete (ctx->sfield_map); | |
1e8e9920 | 1416 | |
1417 | /* We hijacked DECL_ABSTRACT_ORIGIN earlier. We need to clear it before | |
1418 | it produces corrupt debug information. */ | |
1419 | if (ctx->record_type) | |
1420 | { | |
1421 | tree t; | |
1767a056 | 1422 | for (t = TYPE_FIELDS (ctx->record_type); t ; t = DECL_CHAIN (t)) |
1e8e9920 | 1423 | DECL_ABSTRACT_ORIGIN (t) = NULL; |
1424 | } | |
fd6481cf | 1425 | if (ctx->srecord_type) |
1426 | { | |
1427 | tree t; | |
1767a056 | 1428 | for (t = TYPE_FIELDS (ctx->srecord_type); t ; t = DECL_CHAIN (t)) |
fd6481cf | 1429 | DECL_ABSTRACT_ORIGIN (t) = NULL; |
1430 | } | |
1e8e9920 | 1431 | |
f6430caa | 1432 | if (is_task_ctx (ctx)) |
1433 | finalize_task_copyfn (ctx->stmt); | |
1434 | ||
1e8e9920 | 1435 | XDELETE (ctx); |
1436 | } | |
1437 | ||
1438 | /* Fix up RECEIVER_DECL with a type that has been remapped to the child | |
1439 | context. */ | |
1440 | ||
1441 | static void | |
1442 | fixup_child_record_type (omp_context *ctx) | |
1443 | { | |
1444 | tree f, type = ctx->record_type; | |
1445 | ||
1446 | /* ??? It isn't sufficient to just call remap_type here, because | |
1447 | variably_modified_type_p doesn't work the way we expect for | |
1448 | record types. Testing each field for whether it needs remapping | |
1449 | and creating a new record by hand works, however. */ | |
1767a056 | 1450 | for (f = TYPE_FIELDS (type); f ; f = DECL_CHAIN (f)) |
1e8e9920 | 1451 | if (variably_modified_type_p (TREE_TYPE (f), ctx->cb.src_fn)) |
1452 | break; | |
1453 | if (f) | |
1454 | { | |
1455 | tree name, new_fields = NULL; | |
1456 | ||
1457 | type = lang_hooks.types.make_type (RECORD_TYPE); | |
1458 | name = DECL_NAME (TYPE_NAME (ctx->record_type)); | |
e60a6f7b | 1459 | name = build_decl (DECL_SOURCE_LOCATION (ctx->receiver_decl), |
1460 | TYPE_DECL, name, type); | |
1e8e9920 | 1461 | TYPE_NAME (type) = name; |
1462 | ||
1767a056 | 1463 | for (f = TYPE_FIELDS (ctx->record_type); f ; f = DECL_CHAIN (f)) |
1e8e9920 | 1464 | { |
1465 | tree new_f = copy_node (f); | |
1466 | DECL_CONTEXT (new_f) = type; | |
1467 | TREE_TYPE (new_f) = remap_type (TREE_TYPE (f), &ctx->cb); | |
1767a056 | 1468 | DECL_CHAIN (new_f) = new_fields; |
75a70cf9 | 1469 | walk_tree (&DECL_SIZE (new_f), copy_tree_body_r, &ctx->cb, NULL); |
1470 | walk_tree (&DECL_SIZE_UNIT (new_f), copy_tree_body_r, | |
1471 | &ctx->cb, NULL); | |
1472 | walk_tree (&DECL_FIELD_OFFSET (new_f), copy_tree_body_r, | |
1473 | &ctx->cb, NULL); | |
1e8e9920 | 1474 | new_fields = new_f; |
1475 | ||
1476 | /* Arrange to be able to look up the receiver field | |
1477 | given the sender field. */ | |
1478 | splay_tree_insert (ctx->field_map, (splay_tree_key) f, | |
1479 | (splay_tree_value) new_f); | |
1480 | } | |
1481 | TYPE_FIELDS (type) = nreverse (new_fields); | |
1482 | layout_type (type); | |
1483 | } | |
1484 | ||
1485 | TREE_TYPE (ctx->receiver_decl) = build_pointer_type (type); | |
1486 | } | |
1487 | ||
1488 | /* Instantiate decls as necessary in CTX to satisfy the data sharing | |
1489 | specified by CLAUSES. */ | |
1490 | ||
1491 | static void | |
1492 | scan_sharing_clauses (tree clauses, omp_context *ctx) | |
1493 | { | |
1494 | tree c, decl; | |
1495 | bool scan_array_reductions = false; | |
1496 | ||
1497 | for (c = clauses; c; c = OMP_CLAUSE_CHAIN (c)) | |
1498 | { | |
1499 | bool by_ref; | |
1500 | ||
55d6e7cd | 1501 | switch (OMP_CLAUSE_CODE (c)) |
1e8e9920 | 1502 | { |
1503 | case OMP_CLAUSE_PRIVATE: | |
1504 | decl = OMP_CLAUSE_DECL (c); | |
fd6481cf | 1505 | if (OMP_CLAUSE_PRIVATE_OUTER_REF (c)) |
1506 | goto do_private; | |
1507 | else if (!is_variable_sized (decl)) | |
1e8e9920 | 1508 | install_var_local (decl, ctx); |
1509 | break; | |
1510 | ||
1511 | case OMP_CLAUSE_SHARED: | |
bc7bff74 | 1512 | /* Ignore shared directives in teams construct. */ |
1513 | if (gimple_code (ctx->stmt) == GIMPLE_OMP_TEAMS) | |
1514 | break; | |
fd6481cf | 1515 | gcc_assert (is_taskreg_ctx (ctx)); |
1e8e9920 | 1516 | decl = OMP_CLAUSE_DECL (c); |
e7327393 | 1517 | gcc_assert (!COMPLETE_TYPE_P (TREE_TYPE (decl)) |
1518 | || !is_variable_sized (decl)); | |
f49d7bb5 | 1519 | /* Global variables don't need to be copied, |
1520 | the receiver side will use them directly. */ | |
1521 | if (is_global_var (maybe_lookup_decl_in_outer_ctx (decl, ctx))) | |
1522 | break; | |
fd6481cf | 1523 | by_ref = use_pointer_for_field (decl, ctx); |
1e8e9920 | 1524 | if (! TREE_READONLY (decl) |
1525 | || TREE_ADDRESSABLE (decl) | |
1526 | || by_ref | |
1527 | || is_reference (decl)) | |
1528 | { | |
fd6481cf | 1529 | install_var_field (decl, by_ref, 3, ctx); |
1e8e9920 | 1530 | install_var_local (decl, ctx); |
1531 | break; | |
1532 | } | |
1533 | /* We don't need to copy const scalar vars back. */ | |
55d6e7cd | 1534 | OMP_CLAUSE_SET_CODE (c, OMP_CLAUSE_FIRSTPRIVATE); |
1e8e9920 | 1535 | goto do_private; |
1536 | ||
1537 | case OMP_CLAUSE_LASTPRIVATE: | |
1538 | /* Let the corresponding firstprivate clause create | |
1539 | the variable. */ | |
1540 | if (OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE (c)) | |
1541 | break; | |
1542 | /* FALLTHRU */ | |
1543 | ||
1544 | case OMP_CLAUSE_FIRSTPRIVATE: | |
1545 | case OMP_CLAUSE_REDUCTION: | |
3d483a94 | 1546 | case OMP_CLAUSE_LINEAR: |
1e8e9920 | 1547 | decl = OMP_CLAUSE_DECL (c); |
1548 | do_private: | |
1549 | if (is_variable_sized (decl)) | |
1e8e9920 | 1550 | { |
fd6481cf | 1551 | if (is_task_ctx (ctx)) |
1552 | install_var_field (decl, false, 1, ctx); | |
1553 | break; | |
1554 | } | |
1555 | else if (is_taskreg_ctx (ctx)) | |
1556 | { | |
1557 | bool global | |
1558 | = is_global_var (maybe_lookup_decl_in_outer_ctx (decl, ctx)); | |
e8a588af | 1559 | by_ref = use_pointer_for_field (decl, NULL); |
fd6481cf | 1560 | |
1561 | if (is_task_ctx (ctx) | |
1562 | && (global || by_ref || is_reference (decl))) | |
1563 | { | |
1564 | install_var_field (decl, false, 1, ctx); | |
1565 | if (!global) | |
1566 | install_var_field (decl, by_ref, 2, ctx); | |
1567 | } | |
1568 | else if (!global) | |
1569 | install_var_field (decl, by_ref, 3, ctx); | |
1e8e9920 | 1570 | } |
1571 | install_var_local (decl, ctx); | |
1572 | break; | |
1573 | ||
bc7bff74 | 1574 | case OMP_CLAUSE__LOOPTEMP_: |
1575 | gcc_assert (is_parallel_ctx (ctx)); | |
1576 | decl = OMP_CLAUSE_DECL (c); | |
1577 | install_var_field (decl, false, 3, ctx); | |
1578 | install_var_local (decl, ctx); | |
1579 | break; | |
1580 | ||
1e8e9920 | 1581 | case OMP_CLAUSE_COPYPRIVATE: |
1e8e9920 | 1582 | case OMP_CLAUSE_COPYIN: |
1583 | decl = OMP_CLAUSE_DECL (c); | |
e8a588af | 1584 | by_ref = use_pointer_for_field (decl, NULL); |
fd6481cf | 1585 | install_var_field (decl, by_ref, 3, ctx); |
1e8e9920 | 1586 | break; |
1587 | ||
1588 | case OMP_CLAUSE_DEFAULT: | |
1589 | ctx->default_kind = OMP_CLAUSE_DEFAULT_KIND (c); | |
1590 | break; | |
1591 | ||
2169f33b | 1592 | case OMP_CLAUSE_FINAL: |
1e8e9920 | 1593 | case OMP_CLAUSE_IF: |
1594 | case OMP_CLAUSE_NUM_THREADS: | |
bc7bff74 | 1595 | case OMP_CLAUSE_NUM_TEAMS: |
1596 | case OMP_CLAUSE_THREAD_LIMIT: | |
1597 | case OMP_CLAUSE_DEVICE: | |
1e8e9920 | 1598 | case OMP_CLAUSE_SCHEDULE: |
bc7bff74 | 1599 | case OMP_CLAUSE_DIST_SCHEDULE: |
1600 | case OMP_CLAUSE_DEPEND: | |
1e8e9920 | 1601 | if (ctx->outer) |
75a70cf9 | 1602 | scan_omp_op (&OMP_CLAUSE_OPERAND (c, 0), ctx->outer); |
1e8e9920 | 1603 | break; |
1604 | ||
bc7bff74 | 1605 | case OMP_CLAUSE_TO: |
1606 | case OMP_CLAUSE_FROM: | |
1607 | case OMP_CLAUSE_MAP: | |
1608 | if (ctx->outer) | |
1609 | scan_omp_op (&OMP_CLAUSE_SIZE (c), ctx->outer); | |
1610 | decl = OMP_CLAUSE_DECL (c); | |
1611 | /* Global variables with "omp declare target" attribute | |
1612 | don't need to be copied, the receiver side will use them | |
1613 | directly. */ | |
1614 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP | |
1615 | && DECL_P (decl) | |
1616 | && is_global_var (maybe_lookup_decl_in_outer_ctx (decl, ctx)) | |
1617 | && lookup_attribute ("omp declare target", | |
1618 | DECL_ATTRIBUTES (decl))) | |
1619 | break; | |
1620 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP | |
1621 | && OMP_CLAUSE_MAP_KIND (c) == OMP_CLAUSE_MAP_POINTER) | |
1622 | { | |
1623 | /* Ignore OMP_CLAUSE_MAP_POINTER kind for arrays in | |
1624 | #pragma omp target data, there is nothing to map for | |
1625 | those. */ | |
1626 | if (gimple_omp_target_kind (ctx->stmt) == GF_OMP_TARGET_KIND_DATA | |
1627 | && !POINTER_TYPE_P (TREE_TYPE (decl))) | |
1628 | break; | |
1629 | } | |
1630 | if (DECL_P (decl)) | |
1631 | { | |
1632 | if (DECL_SIZE (decl) | |
1633 | && TREE_CODE (DECL_SIZE (decl)) != INTEGER_CST) | |
1634 | { | |
1635 | tree decl2 = DECL_VALUE_EXPR (decl); | |
1636 | gcc_assert (TREE_CODE (decl2) == INDIRECT_REF); | |
1637 | decl2 = TREE_OPERAND (decl2, 0); | |
1638 | gcc_assert (DECL_P (decl2)); | |
1639 | install_var_field (decl2, true, 3, ctx); | |
1640 | install_var_local (decl2, ctx); | |
1641 | install_var_local (decl, ctx); | |
1642 | } | |
1643 | else | |
1644 | { | |
1645 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP | |
1646 | && OMP_CLAUSE_MAP_KIND (c) == OMP_CLAUSE_MAP_POINTER | |
1647 | && !OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION (c) | |
1648 | && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE) | |
1649 | install_var_field (decl, true, 7, ctx); | |
1650 | else | |
1651 | install_var_field (decl, true, 3, ctx); | |
1652 | if (gimple_omp_target_kind (ctx->stmt) | |
1653 | == GF_OMP_TARGET_KIND_REGION) | |
1654 | install_var_local (decl, ctx); | |
1655 | } | |
1656 | } | |
1657 | else | |
1658 | { | |
1659 | tree base = get_base_address (decl); | |
1660 | tree nc = OMP_CLAUSE_CHAIN (c); | |
1661 | if (DECL_P (base) | |
1662 | && nc != NULL_TREE | |
1663 | && OMP_CLAUSE_CODE (nc) == OMP_CLAUSE_MAP | |
1664 | && OMP_CLAUSE_DECL (nc) == base | |
1665 | && OMP_CLAUSE_MAP_KIND (nc) == OMP_CLAUSE_MAP_POINTER | |
1666 | && integer_zerop (OMP_CLAUSE_SIZE (nc))) | |
1667 | { | |
1668 | OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION (c) = 1; | |
1669 | OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION (nc) = 1; | |
1670 | } | |
1671 | else | |
1672 | { | |
1673 | gcc_assert (!splay_tree_lookup (ctx->field_map, | |
1674 | (splay_tree_key) decl)); | |
1675 | tree field | |
1676 | = build_decl (OMP_CLAUSE_LOCATION (c), | |
1677 | FIELD_DECL, NULL_TREE, ptr_type_node); | |
1678 | DECL_ALIGN (field) = TYPE_ALIGN (ptr_type_node); | |
1679 | insert_field_into_struct (ctx->record_type, field); | |
1680 | splay_tree_insert (ctx->field_map, (splay_tree_key) decl, | |
1681 | (splay_tree_value) field); | |
1682 | } | |
1683 | } | |
1684 | break; | |
1685 | ||
1e8e9920 | 1686 | case OMP_CLAUSE_NOWAIT: |
1687 | case OMP_CLAUSE_ORDERED: | |
fd6481cf | 1688 | case OMP_CLAUSE_COLLAPSE: |
1689 | case OMP_CLAUSE_UNTIED: | |
2169f33b | 1690 | case OMP_CLAUSE_MERGEABLE: |
bc7bff74 | 1691 | case OMP_CLAUSE_PROC_BIND: |
3d483a94 | 1692 | case OMP_CLAUSE_SAFELEN: |
1e8e9920 | 1693 | break; |
1694 | ||
bc7bff74 | 1695 | case OMP_CLAUSE_ALIGNED: |
1696 | decl = OMP_CLAUSE_DECL (c); | |
1697 | if (is_global_var (decl) | |
1698 | && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE) | |
1699 | install_var_local (decl, ctx); | |
1700 | break; | |
1701 | ||
1e8e9920 | 1702 | default: |
1703 | gcc_unreachable (); | |
1704 | } | |
1705 | } | |
1706 | ||
1707 | for (c = clauses; c; c = OMP_CLAUSE_CHAIN (c)) | |
1708 | { | |
55d6e7cd | 1709 | switch (OMP_CLAUSE_CODE (c)) |
1e8e9920 | 1710 | { |
1711 | case OMP_CLAUSE_LASTPRIVATE: | |
1712 | /* Let the corresponding firstprivate clause create | |
1713 | the variable. */ | |
75a70cf9 | 1714 | if (OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ (c)) |
fd6481cf | 1715 | scan_array_reductions = true; |
1e8e9920 | 1716 | if (OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE (c)) |
1717 | break; | |
1718 | /* FALLTHRU */ | |
1719 | ||
1720 | case OMP_CLAUSE_PRIVATE: | |
1721 | case OMP_CLAUSE_FIRSTPRIVATE: | |
1722 | case OMP_CLAUSE_REDUCTION: | |
3d483a94 | 1723 | case OMP_CLAUSE_LINEAR: |
1e8e9920 | 1724 | decl = OMP_CLAUSE_DECL (c); |
1725 | if (is_variable_sized (decl)) | |
1726 | install_var_local (decl, ctx); | |
1727 | fixup_remapped_decl (decl, ctx, | |
55d6e7cd | 1728 | OMP_CLAUSE_CODE (c) == OMP_CLAUSE_PRIVATE |
1e8e9920 | 1729 | && OMP_CLAUSE_PRIVATE_DEBUG (c)); |
55d6e7cd | 1730 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_REDUCTION |
1e8e9920 | 1731 | && OMP_CLAUSE_REDUCTION_PLACEHOLDER (c)) |
1732 | scan_array_reductions = true; | |
1733 | break; | |
1734 | ||
1735 | case OMP_CLAUSE_SHARED: | |
bc7bff74 | 1736 | /* Ignore shared directives in teams construct. */ |
1737 | if (gimple_code (ctx->stmt) == GIMPLE_OMP_TEAMS) | |
1738 | break; | |
1e8e9920 | 1739 | decl = OMP_CLAUSE_DECL (c); |
f49d7bb5 | 1740 | if (! is_global_var (maybe_lookup_decl_in_outer_ctx (decl, ctx))) |
1741 | fixup_remapped_decl (decl, ctx, false); | |
1e8e9920 | 1742 | break; |
1743 | ||
bc7bff74 | 1744 | case OMP_CLAUSE_MAP: |
1745 | if (gimple_omp_target_kind (ctx->stmt) == GF_OMP_TARGET_KIND_DATA) | |
1746 | break; | |
1747 | decl = OMP_CLAUSE_DECL (c); | |
1748 | if (DECL_P (decl) | |
1749 | && is_global_var (maybe_lookup_decl_in_outer_ctx (decl, ctx)) | |
1750 | && lookup_attribute ("omp declare target", | |
1751 | DECL_ATTRIBUTES (decl))) | |
1752 | break; | |
1753 | if (DECL_P (decl)) | |
1754 | { | |
1755 | if (OMP_CLAUSE_MAP_KIND (c) == OMP_CLAUSE_MAP_POINTER | |
1756 | && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE | |
1757 | && !COMPLETE_TYPE_P (TREE_TYPE (decl))) | |
1758 | { | |
1759 | tree new_decl = lookup_decl (decl, ctx); | |
1760 | TREE_TYPE (new_decl) | |
1761 | = remap_type (TREE_TYPE (decl), &ctx->cb); | |
1762 | } | |
1763 | else if (DECL_SIZE (decl) | |
1764 | && TREE_CODE (DECL_SIZE (decl)) != INTEGER_CST) | |
1765 | { | |
1766 | tree decl2 = DECL_VALUE_EXPR (decl); | |
1767 | gcc_assert (TREE_CODE (decl2) == INDIRECT_REF); | |
1768 | decl2 = TREE_OPERAND (decl2, 0); | |
1769 | gcc_assert (DECL_P (decl2)); | |
1770 | fixup_remapped_decl (decl2, ctx, false); | |
1771 | fixup_remapped_decl (decl, ctx, true); | |
1772 | } | |
1773 | else | |
1774 | fixup_remapped_decl (decl, ctx, false); | |
1775 | } | |
1776 | break; | |
1777 | ||
1e8e9920 | 1778 | case OMP_CLAUSE_COPYPRIVATE: |
1779 | case OMP_CLAUSE_COPYIN: | |
1780 | case OMP_CLAUSE_DEFAULT: | |
1781 | case OMP_CLAUSE_IF: | |
1782 | case OMP_CLAUSE_NUM_THREADS: | |
bc7bff74 | 1783 | case OMP_CLAUSE_NUM_TEAMS: |
1784 | case OMP_CLAUSE_THREAD_LIMIT: | |
1785 | case OMP_CLAUSE_DEVICE: | |
1e8e9920 | 1786 | case OMP_CLAUSE_SCHEDULE: |
bc7bff74 | 1787 | case OMP_CLAUSE_DIST_SCHEDULE: |
1e8e9920 | 1788 | case OMP_CLAUSE_NOWAIT: |
1789 | case OMP_CLAUSE_ORDERED: | |
fd6481cf | 1790 | case OMP_CLAUSE_COLLAPSE: |
1791 | case OMP_CLAUSE_UNTIED: | |
2169f33b | 1792 | case OMP_CLAUSE_FINAL: |
1793 | case OMP_CLAUSE_MERGEABLE: | |
bc7bff74 | 1794 | case OMP_CLAUSE_PROC_BIND: |
3d483a94 | 1795 | case OMP_CLAUSE_SAFELEN: |
bc7bff74 | 1796 | case OMP_CLAUSE_ALIGNED: |
1797 | case OMP_CLAUSE_DEPEND: | |
1798 | case OMP_CLAUSE__LOOPTEMP_: | |
1799 | case OMP_CLAUSE_TO: | |
1800 | case OMP_CLAUSE_FROM: | |
1e8e9920 | 1801 | break; |
1802 | ||
1803 | default: | |
1804 | gcc_unreachable (); | |
1805 | } | |
1806 | } | |
1807 | ||
1808 | if (scan_array_reductions) | |
1809 | for (c = clauses; c; c = OMP_CLAUSE_CHAIN (c)) | |
55d6e7cd | 1810 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_REDUCTION |
1e8e9920 | 1811 | && OMP_CLAUSE_REDUCTION_PLACEHOLDER (c)) |
1812 | { | |
ab129075 | 1813 | scan_omp (&OMP_CLAUSE_REDUCTION_GIMPLE_INIT (c), ctx); |
1814 | scan_omp (&OMP_CLAUSE_REDUCTION_GIMPLE_MERGE (c), ctx); | |
1e8e9920 | 1815 | } |
fd6481cf | 1816 | else if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LASTPRIVATE |
75a70cf9 | 1817 | && OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ (c)) |
ab129075 | 1818 | scan_omp (&OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ (c), ctx); |
1e8e9920 | 1819 | } |
1820 | ||
1821 | /* Create a new name for omp child function. Returns an identifier. */ | |
1822 | ||
1e8e9920 | 1823 | static tree |
fd6481cf | 1824 | create_omp_child_function_name (bool task_copy) |
1e8e9920 | 1825 | { |
a70a5e2c | 1826 | return (clone_function_name (current_function_decl, |
1827 | task_copy ? "_omp_cpyfn" : "_omp_fn")); | |
1e8e9920 | 1828 | } |
1829 | ||
1830 | /* Build a decl for the omp child function. It'll not contain a body | |
1831 | yet, just the bare decl. */ | |
1832 | ||
1833 | static void | |
fd6481cf | 1834 | create_omp_child_function (omp_context *ctx, bool task_copy) |
1e8e9920 | 1835 | { |
1836 | tree decl, type, name, t; | |
1837 | ||
fd6481cf | 1838 | name = create_omp_child_function_name (task_copy); |
1839 | if (task_copy) | |
1840 | type = build_function_type_list (void_type_node, ptr_type_node, | |
1841 | ptr_type_node, NULL_TREE); | |
1842 | else | |
1843 | type = build_function_type_list (void_type_node, ptr_type_node, NULL_TREE); | |
1e8e9920 | 1844 | |
e60a6f7b | 1845 | decl = build_decl (gimple_location (ctx->stmt), |
1846 | FUNCTION_DECL, name, type); | |
1e8e9920 | 1847 | |
fd6481cf | 1848 | if (!task_copy) |
1849 | ctx->cb.dst_fn = decl; | |
1850 | else | |
75a70cf9 | 1851 | gimple_omp_task_set_copy_fn (ctx->stmt, decl); |
1e8e9920 | 1852 | |
1853 | TREE_STATIC (decl) = 1; | |
1854 | TREE_USED (decl) = 1; | |
1855 | DECL_ARTIFICIAL (decl) = 1; | |
84bfaaeb | 1856 | DECL_NAMELESS (decl) = 1; |
1e8e9920 | 1857 | DECL_IGNORED_P (decl) = 0; |
1858 | TREE_PUBLIC (decl) = 0; | |
1859 | DECL_UNINLINABLE (decl) = 1; | |
1860 | DECL_EXTERNAL (decl) = 0; | |
1861 | DECL_CONTEXT (decl) = NULL_TREE; | |
773c5ba7 | 1862 | DECL_INITIAL (decl) = make_node (BLOCK); |
bc7bff74 | 1863 | bool target_p = false; |
1864 | if (lookup_attribute ("omp declare target", | |
1865 | DECL_ATTRIBUTES (current_function_decl))) | |
1866 | target_p = true; | |
1867 | else | |
1868 | { | |
1869 | omp_context *octx; | |
1870 | for (octx = ctx; octx; octx = octx->outer) | |
1871 | if (gimple_code (octx->stmt) == GIMPLE_OMP_TARGET | |
1872 | && gimple_omp_target_kind (octx->stmt) | |
1873 | == GF_OMP_TARGET_KIND_REGION) | |
1874 | { | |
1875 | target_p = true; | |
1876 | break; | |
1877 | } | |
1878 | } | |
1879 | if (target_p) | |
1880 | DECL_ATTRIBUTES (decl) | |
1881 | = tree_cons (get_identifier ("omp declare target"), | |
1882 | NULL_TREE, DECL_ATTRIBUTES (decl)); | |
1e8e9920 | 1883 | |
e60a6f7b | 1884 | t = build_decl (DECL_SOURCE_LOCATION (decl), |
1885 | RESULT_DECL, NULL_TREE, void_type_node); | |
1e8e9920 | 1886 | DECL_ARTIFICIAL (t) = 1; |
1887 | DECL_IGNORED_P (t) = 1; | |
8e5b4ed6 | 1888 | DECL_CONTEXT (t) = decl; |
1e8e9920 | 1889 | DECL_RESULT (decl) = t; |
1890 | ||
e60a6f7b | 1891 | t = build_decl (DECL_SOURCE_LOCATION (decl), |
1892 | PARM_DECL, get_identifier (".omp_data_i"), ptr_type_node); | |
1e8e9920 | 1893 | DECL_ARTIFICIAL (t) = 1; |
84bfaaeb | 1894 | DECL_NAMELESS (t) = 1; |
1e8e9920 | 1895 | DECL_ARG_TYPE (t) = ptr_type_node; |
773c5ba7 | 1896 | DECL_CONTEXT (t) = current_function_decl; |
1e8e9920 | 1897 | TREE_USED (t) = 1; |
1898 | DECL_ARGUMENTS (decl) = t; | |
fd6481cf | 1899 | if (!task_copy) |
1900 | ctx->receiver_decl = t; | |
1901 | else | |
1902 | { | |
e60a6f7b | 1903 | t = build_decl (DECL_SOURCE_LOCATION (decl), |
1904 | PARM_DECL, get_identifier (".omp_data_o"), | |
fd6481cf | 1905 | ptr_type_node); |
1906 | DECL_ARTIFICIAL (t) = 1; | |
84bfaaeb | 1907 | DECL_NAMELESS (t) = 1; |
fd6481cf | 1908 | DECL_ARG_TYPE (t) = ptr_type_node; |
1909 | DECL_CONTEXT (t) = current_function_decl; | |
1910 | TREE_USED (t) = 1; | |
86f2ad37 | 1911 | TREE_ADDRESSABLE (t) = 1; |
1767a056 | 1912 | DECL_CHAIN (t) = DECL_ARGUMENTS (decl); |
fd6481cf | 1913 | DECL_ARGUMENTS (decl) = t; |
1914 | } | |
1e8e9920 | 1915 | |
48e1416a | 1916 | /* Allocate memory for the function structure. The call to |
773c5ba7 | 1917 | allocate_struct_function clobbers CFUN, so we need to restore |
1e8e9920 | 1918 | it afterward. */ |
87d4aa85 | 1919 | push_struct_function (decl); |
75a70cf9 | 1920 | cfun->function_end_locus = gimple_location (ctx->stmt); |
87d4aa85 | 1921 | pop_cfun (); |
1e8e9920 | 1922 | } |
1923 | ||
bc7bff74 | 1924 | /* Callback for walk_gimple_seq. Check if combined parallel |
1925 | contains gimple_omp_for_combined_into_p OMP_FOR. */ | |
1926 | ||
1927 | static tree | |
1928 | find_combined_for (gimple_stmt_iterator *gsi_p, | |
1929 | bool *handled_ops_p, | |
1930 | struct walk_stmt_info *wi) | |
1931 | { | |
1932 | gimple stmt = gsi_stmt (*gsi_p); | |
1933 | ||
1934 | *handled_ops_p = true; | |
1935 | switch (gimple_code (stmt)) | |
1936 | { | |
1937 | WALK_SUBSTMTS; | |
1938 | ||
1939 | case GIMPLE_OMP_FOR: | |
1940 | if (gimple_omp_for_combined_into_p (stmt) | |
1941 | && gimple_omp_for_kind (stmt) == GF_OMP_FOR_KIND_FOR) | |
1942 | { | |
1943 | wi->info = stmt; | |
1944 | return integer_zero_node; | |
1945 | } | |
1946 | break; | |
1947 | default: | |
1948 | break; | |
1949 | } | |
1950 | return NULL; | |
1951 | } | |
1952 | ||
1e8e9920 | 1953 | /* Scan an OpenMP parallel directive. */ |
1954 | ||
1955 | static void | |
75a70cf9 | 1956 | scan_omp_parallel (gimple_stmt_iterator *gsi, omp_context *outer_ctx) |
1e8e9920 | 1957 | { |
1958 | omp_context *ctx; | |
1959 | tree name; | |
75a70cf9 | 1960 | gimple stmt = gsi_stmt (*gsi); |
1e8e9920 | 1961 | |
1962 | /* Ignore parallel directives with empty bodies, unless there | |
1963 | are copyin clauses. */ | |
1964 | if (optimize > 0 | |
75a70cf9 | 1965 | && empty_body_p (gimple_omp_body (stmt)) |
1966 | && find_omp_clause (gimple_omp_parallel_clauses (stmt), | |
1967 | OMP_CLAUSE_COPYIN) == NULL) | |
1e8e9920 | 1968 | { |
75a70cf9 | 1969 | gsi_replace (gsi, gimple_build_nop (), false); |
1e8e9920 | 1970 | return; |
1971 | } | |
1972 | ||
bc7bff74 | 1973 | if (gimple_omp_parallel_combined_p (stmt)) |
1974 | { | |
1975 | gimple for_stmt; | |
1976 | struct walk_stmt_info wi; | |
1977 | ||
1978 | memset (&wi, 0, sizeof (wi)); | |
1979 | wi.val_only = true; | |
1980 | walk_gimple_seq (gimple_omp_body (stmt), | |
1981 | find_combined_for, NULL, &wi); | |
1982 | for_stmt = (gimple) wi.info; | |
1983 | if (for_stmt) | |
1984 | { | |
1985 | struct omp_for_data fd; | |
1986 | extract_omp_for_data (for_stmt, &fd, NULL); | |
1987 | /* We need two temporaries with fd.loop.v type (istart/iend) | |
1988 | and then (fd.collapse - 1) temporaries with the same | |
1989 | type for count2 ... countN-1 vars if not constant. */ | |
1990 | size_t count = 2, i; | |
1991 | tree type = fd.iter_type; | |
1992 | if (fd.collapse > 1 | |
1993 | && TREE_CODE (fd.loop.n2) != INTEGER_CST) | |
1994 | count += fd.collapse - 1; | |
1995 | for (i = 0; i < count; i++) | |
1996 | { | |
1997 | tree temp = create_tmp_var (type, NULL); | |
1998 | tree c = build_omp_clause (UNKNOWN_LOCATION, | |
1999 | OMP_CLAUSE__LOOPTEMP_); | |
2000 | OMP_CLAUSE_DECL (c) = temp; | |
2001 | OMP_CLAUSE_CHAIN (c) = gimple_omp_parallel_clauses (stmt); | |
2002 | gimple_omp_parallel_set_clauses (stmt, c); | |
2003 | } | |
2004 | } | |
2005 | } | |
2006 | ||
75a70cf9 | 2007 | ctx = new_omp_context (stmt, outer_ctx); |
fd6481cf | 2008 | if (taskreg_nesting_level > 1) |
773c5ba7 | 2009 | ctx->is_nested = true; |
1e8e9920 | 2010 | ctx->field_map = splay_tree_new (splay_tree_compare_pointers, 0, 0); |
1e8e9920 | 2011 | ctx->default_kind = OMP_CLAUSE_DEFAULT_SHARED; |
2012 | ctx->record_type = lang_hooks.types.make_type (RECORD_TYPE); | |
1e8e9920 | 2013 | name = create_tmp_var_name (".omp_data_s"); |
e60a6f7b | 2014 | name = build_decl (gimple_location (stmt), |
2015 | TYPE_DECL, name, ctx->record_type); | |
84bfaaeb | 2016 | DECL_ARTIFICIAL (name) = 1; |
2017 | DECL_NAMELESS (name) = 1; | |
1e8e9920 | 2018 | TYPE_NAME (ctx->record_type) = name; |
fd6481cf | 2019 | create_omp_child_function (ctx, false); |
75a70cf9 | 2020 | gimple_omp_parallel_set_child_fn (stmt, ctx->cb.dst_fn); |
1e8e9920 | 2021 | |
75a70cf9 | 2022 | scan_sharing_clauses (gimple_omp_parallel_clauses (stmt), ctx); |
ab129075 | 2023 | scan_omp (gimple_omp_body_ptr (stmt), ctx); |
1e8e9920 | 2024 | |
2025 | if (TYPE_FIELDS (ctx->record_type) == NULL) | |
2026 | ctx->record_type = ctx->receiver_decl = NULL; | |
2027 | else | |
2028 | { | |
2029 | layout_type (ctx->record_type); | |
2030 | fixup_child_record_type (ctx); | |
2031 | } | |
2032 | } | |
2033 | ||
fd6481cf | 2034 | /* Scan an OpenMP task directive. */ |
2035 | ||
2036 | static void | |
75a70cf9 | 2037 | scan_omp_task (gimple_stmt_iterator *gsi, omp_context *outer_ctx) |
fd6481cf | 2038 | { |
2039 | omp_context *ctx; | |
75a70cf9 | 2040 | tree name, t; |
2041 | gimple stmt = gsi_stmt (*gsi); | |
389dd41b | 2042 | location_t loc = gimple_location (stmt); |
fd6481cf | 2043 | |
2044 | /* Ignore task directives with empty bodies. */ | |
2045 | if (optimize > 0 | |
75a70cf9 | 2046 | && empty_body_p (gimple_omp_body (stmt))) |
fd6481cf | 2047 | { |
75a70cf9 | 2048 | gsi_replace (gsi, gimple_build_nop (), false); |
fd6481cf | 2049 | return; |
2050 | } | |
2051 | ||
75a70cf9 | 2052 | ctx = new_omp_context (stmt, outer_ctx); |
fd6481cf | 2053 | if (taskreg_nesting_level > 1) |
2054 | ctx->is_nested = true; | |
2055 | ctx->field_map = splay_tree_new (splay_tree_compare_pointers, 0, 0); | |
2056 | ctx->default_kind = OMP_CLAUSE_DEFAULT_SHARED; | |
2057 | ctx->record_type = lang_hooks.types.make_type (RECORD_TYPE); | |
2058 | name = create_tmp_var_name (".omp_data_s"); | |
e60a6f7b | 2059 | name = build_decl (gimple_location (stmt), |
2060 | TYPE_DECL, name, ctx->record_type); | |
84bfaaeb | 2061 | DECL_ARTIFICIAL (name) = 1; |
2062 | DECL_NAMELESS (name) = 1; | |
fd6481cf | 2063 | TYPE_NAME (ctx->record_type) = name; |
2064 | create_omp_child_function (ctx, false); | |
75a70cf9 | 2065 | gimple_omp_task_set_child_fn (stmt, ctx->cb.dst_fn); |
fd6481cf | 2066 | |
75a70cf9 | 2067 | scan_sharing_clauses (gimple_omp_task_clauses (stmt), ctx); |
fd6481cf | 2068 | |
2069 | if (ctx->srecord_type) | |
2070 | { | |
2071 | name = create_tmp_var_name (".omp_data_a"); | |
e60a6f7b | 2072 | name = build_decl (gimple_location (stmt), |
2073 | TYPE_DECL, name, ctx->srecord_type); | |
84bfaaeb | 2074 | DECL_ARTIFICIAL (name) = 1; |
2075 | DECL_NAMELESS (name) = 1; | |
fd6481cf | 2076 | TYPE_NAME (ctx->srecord_type) = name; |
2077 | create_omp_child_function (ctx, true); | |
2078 | } | |
2079 | ||
ab129075 | 2080 | scan_omp (gimple_omp_body_ptr (stmt), ctx); |
fd6481cf | 2081 | |
2082 | if (TYPE_FIELDS (ctx->record_type) == NULL) | |
2083 | { | |
2084 | ctx->record_type = ctx->receiver_decl = NULL; | |
75a70cf9 | 2085 | t = build_int_cst (long_integer_type_node, 0); |
2086 | gimple_omp_task_set_arg_size (stmt, t); | |
2087 | t = build_int_cst (long_integer_type_node, 1); | |
2088 | gimple_omp_task_set_arg_align (stmt, t); | |
fd6481cf | 2089 | } |
2090 | else | |
2091 | { | |
2092 | tree *p, vla_fields = NULL_TREE, *q = &vla_fields; | |
2093 | /* Move VLA fields to the end. */ | |
2094 | p = &TYPE_FIELDS (ctx->record_type); | |
2095 | while (*p) | |
2096 | if (!TYPE_SIZE_UNIT (TREE_TYPE (*p)) | |
2097 | || ! TREE_CONSTANT (TYPE_SIZE_UNIT (TREE_TYPE (*p)))) | |
2098 | { | |
2099 | *q = *p; | |
2100 | *p = TREE_CHAIN (*p); | |
2101 | TREE_CHAIN (*q) = NULL_TREE; | |
2102 | q = &TREE_CHAIN (*q); | |
2103 | } | |
2104 | else | |
1767a056 | 2105 | p = &DECL_CHAIN (*p); |
fd6481cf | 2106 | *p = vla_fields; |
2107 | layout_type (ctx->record_type); | |
2108 | fixup_child_record_type (ctx); | |
2109 | if (ctx->srecord_type) | |
2110 | layout_type (ctx->srecord_type); | |
389dd41b | 2111 | t = fold_convert_loc (loc, long_integer_type_node, |
fd6481cf | 2112 | TYPE_SIZE_UNIT (ctx->record_type)); |
75a70cf9 | 2113 | gimple_omp_task_set_arg_size (stmt, t); |
2114 | t = build_int_cst (long_integer_type_node, | |
fd6481cf | 2115 | TYPE_ALIGN_UNIT (ctx->record_type)); |
75a70cf9 | 2116 | gimple_omp_task_set_arg_align (stmt, t); |
fd6481cf | 2117 | } |
2118 | } | |
2119 | ||
1e8e9920 | 2120 | |
773c5ba7 | 2121 | /* Scan an OpenMP loop directive. */ |
1e8e9920 | 2122 | |
2123 | static void | |
75a70cf9 | 2124 | scan_omp_for (gimple stmt, omp_context *outer_ctx) |
1e8e9920 | 2125 | { |
773c5ba7 | 2126 | omp_context *ctx; |
75a70cf9 | 2127 | size_t i; |
1e8e9920 | 2128 | |
773c5ba7 | 2129 | ctx = new_omp_context (stmt, outer_ctx); |
1e8e9920 | 2130 | |
75a70cf9 | 2131 | scan_sharing_clauses (gimple_omp_for_clauses (stmt), ctx); |
1e8e9920 | 2132 | |
ab129075 | 2133 | scan_omp (gimple_omp_for_pre_body_ptr (stmt), ctx); |
75a70cf9 | 2134 | for (i = 0; i < gimple_omp_for_collapse (stmt); i++) |
fd6481cf | 2135 | { |
75a70cf9 | 2136 | scan_omp_op (gimple_omp_for_index_ptr (stmt, i), ctx); |
2137 | scan_omp_op (gimple_omp_for_initial_ptr (stmt, i), ctx); | |
2138 | scan_omp_op (gimple_omp_for_final_ptr (stmt, i), ctx); | |
2139 | scan_omp_op (gimple_omp_for_incr_ptr (stmt, i), ctx); | |
fd6481cf | 2140 | } |
ab129075 | 2141 | scan_omp (gimple_omp_body_ptr (stmt), ctx); |
1e8e9920 | 2142 | } |
2143 | ||
2144 | /* Scan an OpenMP sections directive. */ | |
2145 | ||
2146 | static void | |
75a70cf9 | 2147 | scan_omp_sections (gimple stmt, omp_context *outer_ctx) |
1e8e9920 | 2148 | { |
1e8e9920 | 2149 | omp_context *ctx; |
2150 | ||
2151 | ctx = new_omp_context (stmt, outer_ctx); | |
75a70cf9 | 2152 | scan_sharing_clauses (gimple_omp_sections_clauses (stmt), ctx); |
ab129075 | 2153 | scan_omp (gimple_omp_body_ptr (stmt), ctx); |
1e8e9920 | 2154 | } |
2155 | ||
2156 | /* Scan an OpenMP single directive. */ | |
2157 | ||
2158 | static void | |
75a70cf9 | 2159 | scan_omp_single (gimple stmt, omp_context *outer_ctx) |
1e8e9920 | 2160 | { |
1e8e9920 | 2161 | omp_context *ctx; |
2162 | tree name; | |
2163 | ||
2164 | ctx = new_omp_context (stmt, outer_ctx); | |
2165 | ctx->field_map = splay_tree_new (splay_tree_compare_pointers, 0, 0); | |
2166 | ctx->record_type = lang_hooks.types.make_type (RECORD_TYPE); | |
2167 | name = create_tmp_var_name (".omp_copy_s"); | |
e60a6f7b | 2168 | name = build_decl (gimple_location (stmt), |
2169 | TYPE_DECL, name, ctx->record_type); | |
1e8e9920 | 2170 | TYPE_NAME (ctx->record_type) = name; |
2171 | ||
75a70cf9 | 2172 | scan_sharing_clauses (gimple_omp_single_clauses (stmt), ctx); |
ab129075 | 2173 | scan_omp (gimple_omp_body_ptr (stmt), ctx); |
1e8e9920 | 2174 | |
2175 | if (TYPE_FIELDS (ctx->record_type) == NULL) | |
2176 | ctx->record_type = NULL; | |
2177 | else | |
2178 | layout_type (ctx->record_type); | |
2179 | } | |
2180 | ||
bc7bff74 | 2181 | /* Scan an OpenMP target{, data, update} directive. */ |
2182 | ||
2183 | static void | |
2184 | scan_omp_target (gimple stmt, omp_context *outer_ctx) | |
2185 | { | |
2186 | omp_context *ctx; | |
2187 | tree name; | |
2188 | int kind = gimple_omp_target_kind (stmt); | |
2189 | ||
2190 | ctx = new_omp_context (stmt, outer_ctx); | |
2191 | ctx->field_map = splay_tree_new (splay_tree_compare_pointers, 0, 0); | |
2192 | ctx->default_kind = OMP_CLAUSE_DEFAULT_SHARED; | |
2193 | ctx->record_type = lang_hooks.types.make_type (RECORD_TYPE); | |
2194 | name = create_tmp_var_name (".omp_data_t"); | |
2195 | name = build_decl (gimple_location (stmt), | |
2196 | TYPE_DECL, name, ctx->record_type); | |
2197 | DECL_ARTIFICIAL (name) = 1; | |
2198 | DECL_NAMELESS (name) = 1; | |
2199 | TYPE_NAME (ctx->record_type) = name; | |
2200 | if (kind == GF_OMP_TARGET_KIND_REGION) | |
2201 | { | |
2202 | create_omp_child_function (ctx, false); | |
2203 | gimple_omp_target_set_child_fn (stmt, ctx->cb.dst_fn); | |
2204 | } | |
2205 | ||
2206 | scan_sharing_clauses (gimple_omp_target_clauses (stmt), ctx); | |
2207 | scan_omp (gimple_omp_body_ptr (stmt), ctx); | |
2208 | ||
2209 | if (TYPE_FIELDS (ctx->record_type) == NULL) | |
2210 | ctx->record_type = ctx->receiver_decl = NULL; | |
2211 | else | |
2212 | { | |
2213 | TYPE_FIELDS (ctx->record_type) | |
2214 | = nreverse (TYPE_FIELDS (ctx->record_type)); | |
2215 | #ifdef ENABLE_CHECKING | |
2216 | tree field; | |
2217 | unsigned int align = DECL_ALIGN (TYPE_FIELDS (ctx->record_type)); | |
2218 | for (field = TYPE_FIELDS (ctx->record_type); | |
2219 | field; | |
2220 | field = DECL_CHAIN (field)) | |
2221 | gcc_assert (DECL_ALIGN (field) == align); | |
2222 | #endif | |
2223 | layout_type (ctx->record_type); | |
2224 | if (kind == GF_OMP_TARGET_KIND_REGION) | |
2225 | fixup_child_record_type (ctx); | |
2226 | } | |
2227 | } | |
2228 | ||
2229 | /* Scan an OpenMP teams directive. */ | |
2230 | ||
2231 | static void | |
2232 | scan_omp_teams (gimple stmt, omp_context *outer_ctx) | |
2233 | { | |
2234 | omp_context *ctx = new_omp_context (stmt, outer_ctx); | |
2235 | scan_sharing_clauses (gimple_omp_teams_clauses (stmt), ctx); | |
2236 | scan_omp (gimple_omp_body_ptr (stmt), ctx); | |
2237 | } | |
1e8e9920 | 2238 | |
c1d127dd | 2239 | /* Check OpenMP nesting restrictions. */ |
ab129075 | 2240 | static bool |
2241 | check_omp_nesting_restrictions (gimple stmt, omp_context *ctx) | |
c1d127dd | 2242 | { |
3d483a94 | 2243 | if (ctx != NULL) |
2244 | { | |
2245 | if (gimple_code (ctx->stmt) == GIMPLE_OMP_FOR | |
f2697631 | 2246 | && gimple_omp_for_kind (ctx->stmt) & GF_OMP_FOR_KIND_SIMD) |
3d483a94 | 2247 | { |
2248 | error_at (gimple_location (stmt), | |
2249 | "OpenMP constructs may not be nested inside simd region"); | |
2250 | return false; | |
2251 | } | |
bc7bff74 | 2252 | else if (gimple_code (ctx->stmt) == GIMPLE_OMP_TEAMS) |
2253 | { | |
2254 | if ((gimple_code (stmt) != GIMPLE_OMP_FOR | |
2255 | || (gimple_omp_for_kind (stmt) | |
2256 | != GF_OMP_FOR_KIND_DISTRIBUTE)) | |
2257 | && gimple_code (stmt) != GIMPLE_OMP_PARALLEL) | |
2258 | { | |
2259 | error_at (gimple_location (stmt), | |
2260 | "only distribute or parallel constructs are allowed to " | |
2261 | "be closely nested inside teams construct"); | |
2262 | return false; | |
2263 | } | |
2264 | } | |
3d483a94 | 2265 | } |
75a70cf9 | 2266 | switch (gimple_code (stmt)) |
c1d127dd | 2267 | { |
75a70cf9 | 2268 | case GIMPLE_OMP_FOR: |
f2697631 | 2269 | if (gimple_omp_for_kind (stmt) & GF_OMP_FOR_KIND_SIMD) |
3d483a94 | 2270 | return true; |
bc7bff74 | 2271 | if (gimple_omp_for_kind (stmt) == GF_OMP_FOR_KIND_DISTRIBUTE) |
2272 | { | |
2273 | if (ctx != NULL && gimple_code (ctx->stmt) != GIMPLE_OMP_TEAMS) | |
2274 | { | |
2275 | error_at (gimple_location (stmt), | |
2276 | "distribute construct must be closely nested inside " | |
2277 | "teams construct"); | |
2278 | return false; | |
2279 | } | |
2280 | return true; | |
2281 | } | |
2282 | /* FALLTHRU */ | |
2283 | case GIMPLE_CALL: | |
2284 | if (is_gimple_call (stmt) | |
2285 | && (DECL_FUNCTION_CODE (gimple_call_fndecl (stmt)) | |
2286 | == BUILT_IN_GOMP_CANCEL | |
2287 | || DECL_FUNCTION_CODE (gimple_call_fndecl (stmt)) | |
2288 | == BUILT_IN_GOMP_CANCELLATION_POINT)) | |
2289 | { | |
2290 | const char *bad = NULL; | |
2291 | const char *kind = NULL; | |
2292 | if (ctx == NULL) | |
2293 | { | |
2294 | error_at (gimple_location (stmt), "orphaned %qs construct", | |
2295 | DECL_FUNCTION_CODE (gimple_call_fndecl (stmt)) | |
2296 | == BUILT_IN_GOMP_CANCEL | |
2297 | ? "#pragma omp cancel" | |
2298 | : "#pragma omp cancellation point"); | |
2299 | return false; | |
2300 | } | |
35ec552a | 2301 | switch (tree_fits_shwi_p (gimple_call_arg (stmt, 0)) |
fcb97e84 | 2302 | ? tree_to_shwi (gimple_call_arg (stmt, 0)) |
bc7bff74 | 2303 | : 0) |
2304 | { | |
2305 | case 1: | |
2306 | if (gimple_code (ctx->stmt) != GIMPLE_OMP_PARALLEL) | |
2307 | bad = "#pragma omp parallel"; | |
2308 | else if (DECL_FUNCTION_CODE (gimple_call_fndecl (stmt)) | |
2309 | == BUILT_IN_GOMP_CANCEL | |
2310 | && !integer_zerop (gimple_call_arg (stmt, 1))) | |
2311 | ctx->cancellable = true; | |
2312 | kind = "parallel"; | |
2313 | break; | |
2314 | case 2: | |
2315 | if (gimple_code (ctx->stmt) != GIMPLE_OMP_FOR | |
2316 | || gimple_omp_for_kind (ctx->stmt) != GF_OMP_FOR_KIND_FOR) | |
2317 | bad = "#pragma omp for"; | |
2318 | else if (DECL_FUNCTION_CODE (gimple_call_fndecl (stmt)) | |
2319 | == BUILT_IN_GOMP_CANCEL | |
2320 | && !integer_zerop (gimple_call_arg (stmt, 1))) | |
2321 | { | |
2322 | ctx->cancellable = true; | |
2323 | if (find_omp_clause (gimple_omp_for_clauses (ctx->stmt), | |
2324 | OMP_CLAUSE_NOWAIT)) | |
2325 | warning_at (gimple_location (stmt), 0, | |
2326 | "%<#pragma omp cancel for%> inside " | |
2327 | "%<nowait%> for construct"); | |
2328 | if (find_omp_clause (gimple_omp_for_clauses (ctx->stmt), | |
2329 | OMP_CLAUSE_ORDERED)) | |
2330 | warning_at (gimple_location (stmt), 0, | |
2331 | "%<#pragma omp cancel for%> inside " | |
2332 | "%<ordered%> for construct"); | |
2333 | } | |
2334 | kind = "for"; | |
2335 | break; | |
2336 | case 4: | |
2337 | if (gimple_code (ctx->stmt) != GIMPLE_OMP_SECTIONS | |
2338 | && gimple_code (ctx->stmt) != GIMPLE_OMP_SECTION) | |
2339 | bad = "#pragma omp sections"; | |
2340 | else if (DECL_FUNCTION_CODE (gimple_call_fndecl (stmt)) | |
2341 | == BUILT_IN_GOMP_CANCEL | |
2342 | && !integer_zerop (gimple_call_arg (stmt, 1))) | |
2343 | { | |
2344 | if (gimple_code (ctx->stmt) == GIMPLE_OMP_SECTIONS) | |
2345 | { | |
2346 | ctx->cancellable = true; | |
2347 | if (find_omp_clause (gimple_omp_sections_clauses | |
2348 | (ctx->stmt), | |
2349 | OMP_CLAUSE_NOWAIT)) | |
2350 | warning_at (gimple_location (stmt), 0, | |
2351 | "%<#pragma omp cancel sections%> inside " | |
2352 | "%<nowait%> sections construct"); | |
2353 | } | |
2354 | else | |
2355 | { | |
2356 | gcc_assert (ctx->outer | |
2357 | && gimple_code (ctx->outer->stmt) | |
2358 | == GIMPLE_OMP_SECTIONS); | |
2359 | ctx->outer->cancellable = true; | |
2360 | if (find_omp_clause (gimple_omp_sections_clauses | |
2361 | (ctx->outer->stmt), | |
2362 | OMP_CLAUSE_NOWAIT)) | |
2363 | warning_at (gimple_location (stmt), 0, | |
2364 | "%<#pragma omp cancel sections%> inside " | |
2365 | "%<nowait%> sections construct"); | |
2366 | } | |
2367 | } | |
2368 | kind = "sections"; | |
2369 | break; | |
2370 | case 8: | |
2371 | if (gimple_code (ctx->stmt) != GIMPLE_OMP_TASK) | |
2372 | bad = "#pragma omp task"; | |
2373 | else | |
2374 | ctx->cancellable = true; | |
2375 | kind = "taskgroup"; | |
2376 | break; | |
2377 | default: | |
2378 | error_at (gimple_location (stmt), "invalid arguments"); | |
2379 | return false; | |
2380 | } | |
2381 | if (bad) | |
2382 | { | |
2383 | error_at (gimple_location (stmt), | |
2384 | "%<%s %s%> construct not closely nested inside of %qs", | |
2385 | DECL_FUNCTION_CODE (gimple_call_fndecl (stmt)) | |
2386 | == BUILT_IN_GOMP_CANCEL | |
2387 | ? "#pragma omp cancel" | |
2388 | : "#pragma omp cancellation point", kind, bad); | |
2389 | return false; | |
2390 | } | |
2391 | } | |
3d483a94 | 2392 | /* FALLTHRU */ |
75a70cf9 | 2393 | case GIMPLE_OMP_SECTIONS: |
2394 | case GIMPLE_OMP_SINGLE: | |
c1d127dd | 2395 | for (; ctx != NULL; ctx = ctx->outer) |
75a70cf9 | 2396 | switch (gimple_code (ctx->stmt)) |
c1d127dd | 2397 | { |
75a70cf9 | 2398 | case GIMPLE_OMP_FOR: |
2399 | case GIMPLE_OMP_SECTIONS: | |
2400 | case GIMPLE_OMP_SINGLE: | |
2401 | case GIMPLE_OMP_ORDERED: | |
2402 | case GIMPLE_OMP_MASTER: | |
2403 | case GIMPLE_OMP_TASK: | |
bc7bff74 | 2404 | case GIMPLE_OMP_CRITICAL: |
75a70cf9 | 2405 | if (is_gimple_call (stmt)) |
fd6481cf | 2406 | { |
bc7bff74 | 2407 | if (DECL_FUNCTION_CODE (gimple_call_fndecl (stmt)) |
2408 | != BUILT_IN_GOMP_BARRIER) | |
2409 | return true; | |
ab129075 | 2410 | error_at (gimple_location (stmt), |
2411 | "barrier region may not be closely nested inside " | |
2412 | "of work-sharing, critical, ordered, master or " | |
2413 | "explicit task region"); | |
2414 | return false; | |
fd6481cf | 2415 | } |
ab129075 | 2416 | error_at (gimple_location (stmt), |
2417 | "work-sharing region may not be closely nested inside " | |
2418 | "of work-sharing, critical, ordered, master or explicit " | |
2419 | "task region"); | |
2420 | return false; | |
75a70cf9 | 2421 | case GIMPLE_OMP_PARALLEL: |
ab129075 | 2422 | return true; |
c1d127dd | 2423 | default: |
2424 | break; | |
2425 | } | |
2426 | break; | |
75a70cf9 | 2427 | case GIMPLE_OMP_MASTER: |
c1d127dd | 2428 | for (; ctx != NULL; ctx = ctx->outer) |
75a70cf9 | 2429 | switch (gimple_code (ctx->stmt)) |
c1d127dd | 2430 | { |
75a70cf9 | 2431 | case GIMPLE_OMP_FOR: |
2432 | case GIMPLE_OMP_SECTIONS: | |
2433 | case GIMPLE_OMP_SINGLE: | |
2434 | case GIMPLE_OMP_TASK: | |
ab129075 | 2435 | error_at (gimple_location (stmt), |
2436 | "master region may not be closely nested inside " | |
2437 | "of work-sharing or explicit task region"); | |
2438 | return false; | |
75a70cf9 | 2439 | case GIMPLE_OMP_PARALLEL: |
ab129075 | 2440 | return true; |
c1d127dd | 2441 | default: |
2442 | break; | |
2443 | } | |
2444 | break; | |
75a70cf9 | 2445 | case GIMPLE_OMP_ORDERED: |
c1d127dd | 2446 | for (; ctx != NULL; ctx = ctx->outer) |
75a70cf9 | 2447 | switch (gimple_code (ctx->stmt)) |
c1d127dd | 2448 | { |
75a70cf9 | 2449 | case GIMPLE_OMP_CRITICAL: |
2450 | case GIMPLE_OMP_TASK: | |
ab129075 | 2451 | error_at (gimple_location (stmt), |
2452 | "ordered region may not be closely nested inside " | |
2453 | "of critical or explicit task region"); | |
2454 | return false; | |
75a70cf9 | 2455 | case GIMPLE_OMP_FOR: |
2456 | if (find_omp_clause (gimple_omp_for_clauses (ctx->stmt), | |
c1d127dd | 2457 | OMP_CLAUSE_ORDERED) == NULL) |
ab129075 | 2458 | { |
2459 | error_at (gimple_location (stmt), | |
2460 | "ordered region must be closely nested inside " | |
c1d127dd | 2461 | "a loop region with an ordered clause"); |
ab129075 | 2462 | return false; |
2463 | } | |
2464 | return true; | |
75a70cf9 | 2465 | case GIMPLE_OMP_PARALLEL: |
bc7bff74 | 2466 | error_at (gimple_location (stmt), |
2467 | "ordered region must be closely nested inside " | |
2468 | "a loop region with an ordered clause"); | |
2469 | return false; | |
c1d127dd | 2470 | default: |
2471 | break; | |
2472 | } | |
2473 | break; | |
75a70cf9 | 2474 | case GIMPLE_OMP_CRITICAL: |
c1d127dd | 2475 | for (; ctx != NULL; ctx = ctx->outer) |
75a70cf9 | 2476 | if (gimple_code (ctx->stmt) == GIMPLE_OMP_CRITICAL |
2477 | && (gimple_omp_critical_name (stmt) | |
2478 | == gimple_omp_critical_name (ctx->stmt))) | |
c1d127dd | 2479 | { |
ab129075 | 2480 | error_at (gimple_location (stmt), |
2481 | "critical region may not be nested inside a critical " | |
2482 | "region with the same name"); | |
2483 | return false; | |
c1d127dd | 2484 | } |
2485 | break; | |
bc7bff74 | 2486 | case GIMPLE_OMP_TEAMS: |
2487 | if (ctx == NULL | |
2488 | || gimple_code (ctx->stmt) != GIMPLE_OMP_TARGET | |
2489 | || gimple_omp_target_kind (ctx->stmt) != GF_OMP_TARGET_KIND_REGION) | |
2490 | { | |
2491 | error_at (gimple_location (stmt), | |
2492 | "teams construct not closely nested inside of target " | |
2493 | "region"); | |
2494 | return false; | |
2495 | } | |
2496 | break; | |
c1d127dd | 2497 | default: |
2498 | break; | |
2499 | } | |
ab129075 | 2500 | return true; |
c1d127dd | 2501 | } |
2502 | ||
2503 | ||
75a70cf9 | 2504 | /* Helper function scan_omp. |
2505 | ||
2506 | Callback for walk_tree or operators in walk_gimple_stmt used to | |
2507 | scan for OpenMP directives in TP. */ | |
1e8e9920 | 2508 | |
2509 | static tree | |
75a70cf9 | 2510 | scan_omp_1_op (tree *tp, int *walk_subtrees, void *data) |
1e8e9920 | 2511 | { |
4077bf7a | 2512 | struct walk_stmt_info *wi = (struct walk_stmt_info *) data; |
2513 | omp_context *ctx = (omp_context *) wi->info; | |
1e8e9920 | 2514 | tree t = *tp; |
2515 | ||
75a70cf9 | 2516 | switch (TREE_CODE (t)) |
2517 | { | |
2518 | case VAR_DECL: | |
2519 | case PARM_DECL: | |
2520 | case LABEL_DECL: | |
2521 | case RESULT_DECL: | |
2522 | if (ctx) | |
2523 | *tp = remap_decl (t, &ctx->cb); | |
2524 | break; | |
2525 | ||
2526 | default: | |
2527 | if (ctx && TYPE_P (t)) | |
2528 | *tp = remap_type (t, &ctx->cb); | |
2529 | else if (!DECL_P (t)) | |
7cf869dd | 2530 | { |
2531 | *walk_subtrees = 1; | |
2532 | if (ctx) | |
182cf5a9 | 2533 | { |
2534 | tree tem = remap_type (TREE_TYPE (t), &ctx->cb); | |
2535 | if (tem != TREE_TYPE (t)) | |
2536 | { | |
2537 | if (TREE_CODE (t) == INTEGER_CST) | |
2538 | *tp = build_int_cst_wide (tem, | |
2539 | TREE_INT_CST_LOW (t), | |
2540 | TREE_INT_CST_HIGH (t)); | |
2541 | else | |
2542 | TREE_TYPE (t) = tem; | |
2543 | } | |
2544 | } | |
7cf869dd | 2545 | } |
75a70cf9 | 2546 | break; |
2547 | } | |
2548 | ||
2549 | return NULL_TREE; | |
2550 | } | |
2551 | ||
f2697631 | 2552 | /* Return true if FNDECL is a setjmp or a longjmp. */ |
2553 | ||
2554 | static bool | |
2555 | setjmp_or_longjmp_p (const_tree fndecl) | |
2556 | { | |
2557 | if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
2558 | && (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_SETJMP | |
2559 | || DECL_FUNCTION_CODE (fndecl) == BUILT_IN_LONGJMP)) | |
2560 | return true; | |
2561 | ||
2562 | tree declname = DECL_NAME (fndecl); | |
2563 | if (!declname) | |
2564 | return false; | |
2565 | const char *name = IDENTIFIER_POINTER (declname); | |
2566 | return !strcmp (name, "setjmp") || !strcmp (name, "longjmp"); | |
2567 | } | |
2568 | ||
75a70cf9 | 2569 | |
2570 | /* Helper function for scan_omp. | |
2571 | ||
2572 | Callback for walk_gimple_stmt used to scan for OpenMP directives in | |
2573 | the current statement in GSI. */ | |
2574 | ||
2575 | static tree | |
2576 | scan_omp_1_stmt (gimple_stmt_iterator *gsi, bool *handled_ops_p, | |
2577 | struct walk_stmt_info *wi) | |
2578 | { | |
2579 | gimple stmt = gsi_stmt (*gsi); | |
2580 | omp_context *ctx = (omp_context *) wi->info; | |
2581 | ||
2582 | if (gimple_has_location (stmt)) | |
2583 | input_location = gimple_location (stmt); | |
1e8e9920 | 2584 | |
c1d127dd | 2585 | /* Check the OpenMP nesting restrictions. */ |
bc7bff74 | 2586 | bool remove = false; |
2587 | if (is_gimple_omp (stmt)) | |
2588 | remove = !check_omp_nesting_restrictions (stmt, ctx); | |
2589 | else if (is_gimple_call (stmt)) | |
2590 | { | |
2591 | tree fndecl = gimple_call_fndecl (stmt); | |
f2697631 | 2592 | if (fndecl) |
2593 | { | |
2594 | if (setjmp_or_longjmp_p (fndecl) | |
2595 | && ctx | |
2596 | && gimple_code (ctx->stmt) == GIMPLE_OMP_FOR | |
2597 | && gimple_omp_for_kind (ctx->stmt) & GF_OMP_FOR_KIND_SIMD) | |
2598 | { | |
2599 | remove = true; | |
2600 | error_at (gimple_location (stmt), | |
2601 | "setjmp/longjmp inside simd construct"); | |
2602 | } | |
2603 | else if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL) | |
2604 | switch (DECL_FUNCTION_CODE (fndecl)) | |
2605 | { | |
2606 | case BUILT_IN_GOMP_BARRIER: | |
2607 | case BUILT_IN_GOMP_CANCEL: | |
2608 | case BUILT_IN_GOMP_CANCELLATION_POINT: | |
2609 | case BUILT_IN_GOMP_TASKYIELD: | |
2610 | case BUILT_IN_GOMP_TASKWAIT: | |
2611 | case BUILT_IN_GOMP_TASKGROUP_START: | |
2612 | case BUILT_IN_GOMP_TASKGROUP_END: | |
2613 | remove = !check_omp_nesting_restrictions (stmt, ctx); | |
2614 | break; | |
2615 | default: | |
2616 | break; | |
2617 | } | |
2618 | } | |
bc7bff74 | 2619 | } |
2620 | if (remove) | |
2621 | { | |
2622 | stmt = gimple_build_nop (); | |
2623 | gsi_replace (gsi, stmt, false); | |
fd6481cf | 2624 | } |
c1d127dd | 2625 | |
75a70cf9 | 2626 | *handled_ops_p = true; |
2627 | ||
2628 | switch (gimple_code (stmt)) | |
1e8e9920 | 2629 | { |
75a70cf9 | 2630 | case GIMPLE_OMP_PARALLEL: |
fd6481cf | 2631 | taskreg_nesting_level++; |
75a70cf9 | 2632 | scan_omp_parallel (gsi, ctx); |
fd6481cf | 2633 | taskreg_nesting_level--; |
2634 | break; | |
2635 | ||
75a70cf9 | 2636 | case GIMPLE_OMP_TASK: |
fd6481cf | 2637 | taskreg_nesting_level++; |
75a70cf9 | 2638 | scan_omp_task (gsi, ctx); |
fd6481cf | 2639 | taskreg_nesting_level--; |
1e8e9920 | 2640 | break; |
2641 | ||
75a70cf9 | 2642 | case GIMPLE_OMP_FOR: |
2643 | scan_omp_for (stmt, ctx); | |
1e8e9920 | 2644 | break; |
2645 | ||
75a70cf9 | 2646 | case GIMPLE_OMP_SECTIONS: |
2647 | scan_omp_sections (stmt, ctx); | |
1e8e9920 | 2648 | break; |
2649 | ||
75a70cf9 | 2650 | case GIMPLE_OMP_SINGLE: |
2651 | scan_omp_single (stmt, ctx); | |
1e8e9920 | 2652 | break; |
2653 | ||
75a70cf9 | 2654 | case GIMPLE_OMP_SECTION: |
2655 | case GIMPLE_OMP_MASTER: | |
bc7bff74 | 2656 | case GIMPLE_OMP_TASKGROUP: |
75a70cf9 | 2657 | case GIMPLE_OMP_ORDERED: |
2658 | case GIMPLE_OMP_CRITICAL: | |
2659 | ctx = new_omp_context (stmt, ctx); | |
ab129075 | 2660 | scan_omp (gimple_omp_body_ptr (stmt), ctx); |
1e8e9920 | 2661 | break; |
2662 | ||
bc7bff74 | 2663 | case GIMPLE_OMP_TARGET: |
2664 | scan_omp_target (stmt, ctx); | |
2665 | break; | |
2666 | ||
2667 | case GIMPLE_OMP_TEAMS: | |
2668 | scan_omp_teams (stmt, ctx); | |
2669 | break; | |
2670 | ||
75a70cf9 | 2671 | case GIMPLE_BIND: |
1e8e9920 | 2672 | { |
2673 | tree var; | |
1e8e9920 | 2674 | |
75a70cf9 | 2675 | *handled_ops_p = false; |
2676 | if (ctx) | |
1767a056 | 2677 | for (var = gimple_bind_vars (stmt); var ; var = DECL_CHAIN (var)) |
75a70cf9 | 2678 | insert_decl_map (&ctx->cb, var, var); |
1e8e9920 | 2679 | } |
2680 | break; | |
1e8e9920 | 2681 | default: |
75a70cf9 | 2682 | *handled_ops_p = false; |
1e8e9920 | 2683 | break; |
2684 | } | |
2685 | ||
2686 | return NULL_TREE; | |
2687 | } | |
2688 | ||
2689 | ||
75a70cf9 | 2690 | /* Scan all the statements starting at the current statement. CTX |
2691 | contains context information about the OpenMP directives and | |
2692 | clauses found during the scan. */ | |
1e8e9920 | 2693 | |
2694 | static void | |
ab129075 | 2695 | scan_omp (gimple_seq *body_p, omp_context *ctx) |
1e8e9920 | 2696 | { |
2697 | location_t saved_location; | |
2698 | struct walk_stmt_info wi; | |
2699 | ||
2700 | memset (&wi, 0, sizeof (wi)); | |
1e8e9920 | 2701 | wi.info = ctx; |
1e8e9920 | 2702 | wi.want_locations = true; |
2703 | ||
2704 | saved_location = input_location; | |
ab129075 | 2705 | walk_gimple_seq_mod (body_p, scan_omp_1_stmt, scan_omp_1_op, &wi); |
1e8e9920 | 2706 | input_location = saved_location; |
2707 | } | |
2708 | \f | |
2709 | /* Re-gimplification and code generation routines. */ | |
2710 | ||
2711 | /* Build a call to GOMP_barrier. */ | |
2712 | ||
bc7bff74 | 2713 | static gimple |
2714 | build_omp_barrier (tree lhs) | |
2715 | { | |
2716 | tree fndecl = builtin_decl_explicit (lhs ? BUILT_IN_GOMP_BARRIER_CANCEL | |
2717 | : BUILT_IN_GOMP_BARRIER); | |
2718 | gimple g = gimple_build_call (fndecl, 0); | |
2719 | if (lhs) | |
2720 | gimple_call_set_lhs (g, lhs); | |
2721 | return g; | |
1e8e9920 | 2722 | } |
2723 | ||
2724 | /* If a context was created for STMT when it was scanned, return it. */ | |
2725 | ||
2726 | static omp_context * | |
75a70cf9 | 2727 | maybe_lookup_ctx (gimple stmt) |
1e8e9920 | 2728 | { |
2729 | splay_tree_node n; | |
2730 | n = splay_tree_lookup (all_contexts, (splay_tree_key) stmt); | |
2731 | return n ? (omp_context *) n->value : NULL; | |
2732 | } | |
2733 | ||
773c5ba7 | 2734 | |
2735 | /* Find the mapping for DECL in CTX or the immediately enclosing | |
2736 | context that has a mapping for DECL. | |
2737 | ||
2738 | If CTX is a nested parallel directive, we may have to use the decl | |
2739 | mappings created in CTX's parent context. Suppose that we have the | |
2740 | following parallel nesting (variable UIDs showed for clarity): | |
2741 | ||
2742 | iD.1562 = 0; | |
2743 | #omp parallel shared(iD.1562) -> outer parallel | |
2744 | iD.1562 = iD.1562 + 1; | |
2745 | ||
2746 | #omp parallel shared (iD.1562) -> inner parallel | |
2747 | iD.1562 = iD.1562 - 1; | |
2748 | ||
2749 | Each parallel structure will create a distinct .omp_data_s structure | |
2750 | for copying iD.1562 in/out of the directive: | |
2751 | ||
2752 | outer parallel .omp_data_s.1.i -> iD.1562 | |
2753 | inner parallel .omp_data_s.2.i -> iD.1562 | |
2754 | ||
2755 | A shared variable mapping will produce a copy-out operation before | |
2756 | the parallel directive and a copy-in operation after it. So, in | |
2757 | this case we would have: | |
2758 | ||
2759 | iD.1562 = 0; | |
2760 | .omp_data_o.1.i = iD.1562; | |
2761 | #omp parallel shared(iD.1562) -> outer parallel | |
2762 | .omp_data_i.1 = &.omp_data_o.1 | |
2763 | .omp_data_i.1->i = .omp_data_i.1->i + 1; | |
2764 | ||
2765 | .omp_data_o.2.i = iD.1562; -> ** | |
2766 | #omp parallel shared(iD.1562) -> inner parallel | |
2767 | .omp_data_i.2 = &.omp_data_o.2 | |
2768 | .omp_data_i.2->i = .omp_data_i.2->i - 1; | |
2769 | ||
2770 | ||
2771 | ** This is a problem. The symbol iD.1562 cannot be referenced | |
2772 | inside the body of the outer parallel region. But since we are | |
2773 | emitting this copy operation while expanding the inner parallel | |
2774 | directive, we need to access the CTX structure of the outer | |
2775 | parallel directive to get the correct mapping: | |
2776 | ||
2777 | .omp_data_o.2.i = .omp_data_i.1->i | |
2778 | ||
2779 | Since there may be other workshare or parallel directives enclosing | |
2780 | the parallel directive, it may be necessary to walk up the context | |
2781 | parent chain. This is not a problem in general because nested | |
2782 | parallelism happens only rarely. */ | |
2783 | ||
2784 | static tree | |
2785 | lookup_decl_in_outer_ctx (tree decl, omp_context *ctx) | |
2786 | { | |
2787 | tree t; | |
2788 | omp_context *up; | |
2789 | ||
773c5ba7 | 2790 | for (up = ctx->outer, t = NULL; up && t == NULL; up = up->outer) |
2791 | t = maybe_lookup_decl (decl, up); | |
2792 | ||
87b31375 | 2793 | gcc_assert (!ctx->is_nested || t || is_global_var (decl)); |
773c5ba7 | 2794 | |
c37594c7 | 2795 | return t ? t : decl; |
773c5ba7 | 2796 | } |
2797 | ||
2798 | ||
f49d7bb5 | 2799 | /* Similar to lookup_decl_in_outer_ctx, but return DECL if not found |
2800 | in outer contexts. */ | |
2801 | ||
2802 | static tree | |
2803 | maybe_lookup_decl_in_outer_ctx (tree decl, omp_context *ctx) | |
2804 | { | |
2805 | tree t = NULL; | |
2806 | omp_context *up; | |
2807 | ||
87b31375 | 2808 | for (up = ctx->outer, t = NULL; up && t == NULL; up = up->outer) |
2809 | t = maybe_lookup_decl (decl, up); | |
f49d7bb5 | 2810 | |
2811 | return t ? t : decl; | |
2812 | } | |
2813 | ||
2814 | ||
1e8e9920 | 2815 | /* Construct the initialization value for reduction CLAUSE. */ |
2816 | ||
2817 | tree | |
2818 | omp_reduction_init (tree clause, tree type) | |
2819 | { | |
389dd41b | 2820 | location_t loc = OMP_CLAUSE_LOCATION (clause); |
1e8e9920 | 2821 | switch (OMP_CLAUSE_REDUCTION_CODE (clause)) |
2822 | { | |
2823 | case PLUS_EXPR: | |
2824 | case MINUS_EXPR: | |
2825 | case BIT_IOR_EXPR: | |
2826 | case BIT_XOR_EXPR: | |
2827 | case TRUTH_OR_EXPR: | |
2828 | case TRUTH_ORIF_EXPR: | |
2829 | case TRUTH_XOR_EXPR: | |
2830 | case NE_EXPR: | |
385f3f36 | 2831 | return build_zero_cst (type); |
1e8e9920 | 2832 | |
2833 | case MULT_EXPR: | |
2834 | case TRUTH_AND_EXPR: | |
2835 | case TRUTH_ANDIF_EXPR: | |
2836 | case EQ_EXPR: | |
389dd41b | 2837 | return fold_convert_loc (loc, type, integer_one_node); |
1e8e9920 | 2838 | |
2839 | case BIT_AND_EXPR: | |
389dd41b | 2840 | return fold_convert_loc (loc, type, integer_minus_one_node); |
1e8e9920 | 2841 | |
2842 | case MAX_EXPR: | |
2843 | if (SCALAR_FLOAT_TYPE_P (type)) | |
2844 | { | |
2845 | REAL_VALUE_TYPE max, min; | |
2846 | if (HONOR_INFINITIES (TYPE_MODE (type))) | |
2847 | { | |
2848 | real_inf (&max); | |
2849 | real_arithmetic (&min, NEGATE_EXPR, &max, NULL); | |
2850 | } | |
2851 | else | |
2852 | real_maxval (&min, 1, TYPE_MODE (type)); | |
2853 | return build_real (type, min); | |
2854 | } | |
2855 | else | |
2856 | { | |
2857 | gcc_assert (INTEGRAL_TYPE_P (type)); | |
2858 | return TYPE_MIN_VALUE (type); | |
2859 | } | |
2860 | ||
2861 | case MIN_EXPR: | |
2862 | if (SCALAR_FLOAT_TYPE_P (type)) | |
2863 | { | |
2864 | REAL_VALUE_TYPE max; | |
2865 | if (HONOR_INFINITIES (TYPE_MODE (type))) | |
2866 | real_inf (&max); | |
2867 | else | |
2868 | real_maxval (&max, 0, TYPE_MODE (type)); | |
2869 | return build_real (type, max); | |
2870 | } | |
2871 | else | |
2872 | { | |
2873 | gcc_assert (INTEGRAL_TYPE_P (type)); | |
2874 | return TYPE_MAX_VALUE (type); | |
2875 | } | |
2876 | ||
2877 | default: | |
2878 | gcc_unreachable (); | |
2879 | } | |
2880 | } | |
2881 | ||
bc7bff74 | 2882 | /* Return alignment to be assumed for var in CLAUSE, which should be |
2883 | OMP_CLAUSE_ALIGNED. */ | |
2884 | ||
2885 | static tree | |
2886 | omp_clause_aligned_alignment (tree clause) | |
2887 | { | |
2888 | if (OMP_CLAUSE_ALIGNED_ALIGNMENT (clause)) | |
2889 | return OMP_CLAUSE_ALIGNED_ALIGNMENT (clause); | |
2890 | ||
2891 | /* Otherwise return implementation defined alignment. */ | |
2892 | unsigned int al = 1; | |
2893 | enum machine_mode mode, vmode; | |
2894 | int vs = targetm.vectorize.autovectorize_vector_sizes (); | |
2895 | if (vs) | |
2896 | vs = 1 << floor_log2 (vs); | |
2897 | static enum mode_class classes[] | |
2898 | = { MODE_INT, MODE_VECTOR_INT, MODE_FLOAT, MODE_VECTOR_FLOAT }; | |
2899 | for (int i = 0; i < 4; i += 2) | |
2900 | for (mode = GET_CLASS_NARROWEST_MODE (classes[i]); | |
2901 | mode != VOIDmode; | |
2902 | mode = GET_MODE_WIDER_MODE (mode)) | |
2903 | { | |
2904 | vmode = targetm.vectorize.preferred_simd_mode (mode); | |
2905 | if (GET_MODE_CLASS (vmode) != classes[i + 1]) | |
2906 | continue; | |
2907 | while (vs | |
2908 | && GET_MODE_SIZE (vmode) < vs | |
2909 | && GET_MODE_2XWIDER_MODE (vmode) != VOIDmode) | |
2910 | vmode = GET_MODE_2XWIDER_MODE (vmode); | |
2911 | ||
2912 | tree type = lang_hooks.types.type_for_mode (mode, 1); | |
2913 | if (type == NULL_TREE || TYPE_MODE (type) != mode) | |
2914 | continue; | |
2915 | type = build_vector_type (type, GET_MODE_SIZE (vmode) | |
2916 | / GET_MODE_SIZE (mode)); | |
2917 | if (TYPE_MODE (type) != vmode) | |
2918 | continue; | |
2919 | if (TYPE_ALIGN_UNIT (type) > al) | |
2920 | al = TYPE_ALIGN_UNIT (type); | |
2921 | } | |
2922 | return build_int_cst (integer_type_node, al); | |
2923 | } | |
2924 | ||
3d483a94 | 2925 | /* Return maximum possible vectorization factor for the target. */ |
2926 | ||
2927 | static int | |
2928 | omp_max_vf (void) | |
2929 | { | |
2930 | if (!optimize | |
2931 | || optimize_debug | |
043115ec | 2932 | || (!flag_tree_loop_vectorize |
2933 | && (global_options_set.x_flag_tree_loop_vectorize | |
2934 | || global_options_set.x_flag_tree_vectorize))) | |
3d483a94 | 2935 | return 1; |
2936 | ||
2937 | int vs = targetm.vectorize.autovectorize_vector_sizes (); | |
2938 | if (vs) | |
2939 | { | |
2940 | vs = 1 << floor_log2 (vs); | |
2941 | return vs; | |
2942 | } | |
2943 | enum machine_mode vqimode = targetm.vectorize.preferred_simd_mode (QImode); | |
2944 | if (GET_MODE_CLASS (vqimode) == MODE_VECTOR_INT) | |
2945 | return GET_MODE_NUNITS (vqimode); | |
2946 | return 1; | |
2947 | } | |
2948 | ||
2949 | /* Helper function of lower_rec_input_clauses, used for #pragma omp simd | |
2950 | privatization. */ | |
2951 | ||
2952 | static bool | |
2953 | lower_rec_simd_input_clauses (tree new_var, omp_context *ctx, int &max_vf, | |
2954 | tree &idx, tree &lane, tree &ivar, tree &lvar) | |
2955 | { | |
2956 | if (max_vf == 0) | |
2957 | { | |
2958 | max_vf = omp_max_vf (); | |
2959 | if (max_vf > 1) | |
2960 | { | |
2961 | tree c = find_omp_clause (gimple_omp_for_clauses (ctx->stmt), | |
2962 | OMP_CLAUSE_SAFELEN); | |
2963 | if (c | |
2964 | && compare_tree_int (OMP_CLAUSE_SAFELEN_EXPR (c), max_vf) == -1) | |
fcb97e84 | 2965 | max_vf = tree_to_shwi (OMP_CLAUSE_SAFELEN_EXPR (c)); |
3d483a94 | 2966 | } |
2967 | if (max_vf > 1) | |
2968 | { | |
2969 | idx = create_tmp_var (unsigned_type_node, NULL); | |
2970 | lane = create_tmp_var (unsigned_type_node, NULL); | |
2971 | } | |
2972 | } | |
2973 | if (max_vf == 1) | |
2974 | return false; | |
2975 | ||
2976 | tree atype = build_array_type_nelts (TREE_TYPE (new_var), max_vf); | |
2977 | tree avar = create_tmp_var_raw (atype, NULL); | |
2978 | if (TREE_ADDRESSABLE (new_var)) | |
2979 | TREE_ADDRESSABLE (avar) = 1; | |
2980 | DECL_ATTRIBUTES (avar) | |
2981 | = tree_cons (get_identifier ("omp simd array"), NULL, | |
2982 | DECL_ATTRIBUTES (avar)); | |
2983 | gimple_add_tmp_var (avar); | |
2984 | ivar = build4 (ARRAY_REF, TREE_TYPE (new_var), avar, idx, | |
2985 | NULL_TREE, NULL_TREE); | |
2986 | lvar = build4 (ARRAY_REF, TREE_TYPE (new_var), avar, lane, | |
2987 | NULL_TREE, NULL_TREE); | |
bc7bff74 | 2988 | if (DECL_P (new_var)) |
2989 | { | |
2990 | SET_DECL_VALUE_EXPR (new_var, lvar); | |
2991 | DECL_HAS_VALUE_EXPR_P (new_var) = 1; | |
2992 | } | |
3d483a94 | 2993 | return true; |
2994 | } | |
2995 | ||
1e8e9920 | 2996 | /* Generate code to implement the input clauses, FIRSTPRIVATE and COPYIN, |
2997 | from the receiver (aka child) side and initializers for REFERENCE_TYPE | |
2998 | private variables. Initialization statements go in ILIST, while calls | |
2999 | to destructors go in DLIST. */ | |
3000 | ||
3001 | static void | |
75a70cf9 | 3002 | lower_rec_input_clauses (tree clauses, gimple_seq *ilist, gimple_seq *dlist, |
bc7bff74 | 3003 | omp_context *ctx, struct omp_for_data *fd) |
1e8e9920 | 3004 | { |
c2f47e15 | 3005 | tree c, dtor, copyin_seq, x, ptr; |
1e8e9920 | 3006 | bool copyin_by_ref = false; |
f49d7bb5 | 3007 | bool lastprivate_firstprivate = false; |
bc7bff74 | 3008 | bool reduction_omp_orig_ref = false; |
1e8e9920 | 3009 | int pass; |
3d483a94 | 3010 | bool is_simd = (gimple_code (ctx->stmt) == GIMPLE_OMP_FOR |
f2697631 | 3011 | && gimple_omp_for_kind (ctx->stmt) & GF_OMP_FOR_KIND_SIMD); |
3d483a94 | 3012 | int max_vf = 0; |
3013 | tree lane = NULL_TREE, idx = NULL_TREE; | |
3014 | tree ivar = NULL_TREE, lvar = NULL_TREE; | |
3015 | gimple_seq llist[2] = { NULL, NULL }; | |
1e8e9920 | 3016 | |
1e8e9920 | 3017 | copyin_seq = NULL; |
3018 | ||
3d483a94 | 3019 | /* Set max_vf=1 (which will later enforce safelen=1) in simd loops |
3020 | with data sharing clauses referencing variable sized vars. That | |
3021 | is unnecessarily hard to support and very unlikely to result in | |
3022 | vectorized code anyway. */ | |
3023 | if (is_simd) | |
3024 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
3025 | switch (OMP_CLAUSE_CODE (c)) | |
3026 | { | |
3027 | case OMP_CLAUSE_REDUCTION: | |
3d483a94 | 3028 | case OMP_CLAUSE_PRIVATE: |
3029 | case OMP_CLAUSE_FIRSTPRIVATE: | |
3030 | case OMP_CLAUSE_LASTPRIVATE: | |
3031 | case OMP_CLAUSE_LINEAR: | |
3032 | if (is_variable_sized (OMP_CLAUSE_DECL (c))) | |
3033 | max_vf = 1; | |
3034 | break; | |
3035 | default: | |
3036 | continue; | |
3037 | } | |
3038 | ||
1e8e9920 | 3039 | /* Do all the fixed sized types in the first pass, and the variable sized |
3040 | types in the second pass. This makes sure that the scalar arguments to | |
48e1416a | 3041 | the variable sized types are processed before we use them in the |
1e8e9920 | 3042 | variable sized operations. */ |
3043 | for (pass = 0; pass < 2; ++pass) | |
3044 | { | |
3045 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
3046 | { | |
55d6e7cd | 3047 | enum omp_clause_code c_kind = OMP_CLAUSE_CODE (c); |
1e8e9920 | 3048 | tree var, new_var; |
3049 | bool by_ref; | |
389dd41b | 3050 | location_t clause_loc = OMP_CLAUSE_LOCATION (c); |
1e8e9920 | 3051 | |
3052 | switch (c_kind) | |
3053 | { | |
3054 | case OMP_CLAUSE_PRIVATE: | |
3055 | if (OMP_CLAUSE_PRIVATE_DEBUG (c)) | |
3056 | continue; | |
3057 | break; | |
3058 | case OMP_CLAUSE_SHARED: | |
bc7bff74 | 3059 | /* Ignore shared directives in teams construct. */ |
3060 | if (gimple_code (ctx->stmt) == GIMPLE_OMP_TEAMS) | |
3061 | continue; | |
f49d7bb5 | 3062 | if (maybe_lookup_decl (OMP_CLAUSE_DECL (c), ctx) == NULL) |
3063 | { | |
3064 | gcc_assert (is_global_var (OMP_CLAUSE_DECL (c))); | |
3065 | continue; | |
3066 | } | |
1e8e9920 | 3067 | case OMP_CLAUSE_FIRSTPRIVATE: |
1e8e9920 | 3068 | case OMP_CLAUSE_COPYIN: |
bc7bff74 | 3069 | case OMP_CLAUSE_LINEAR: |
3070 | break; | |
1e8e9920 | 3071 | case OMP_CLAUSE_REDUCTION: |
bc7bff74 | 3072 | if (OMP_CLAUSE_REDUCTION_OMP_ORIG_REF (c)) |
3073 | reduction_omp_orig_ref = true; | |
1e8e9920 | 3074 | break; |
bc7bff74 | 3075 | case OMP_CLAUSE__LOOPTEMP_: |
3076 | /* Handle _looptemp_ clauses only on parallel. */ | |
3077 | if (fd) | |
3078 | continue; | |
3d483a94 | 3079 | break; |
df2c34fc | 3080 | case OMP_CLAUSE_LASTPRIVATE: |
f49d7bb5 | 3081 | if (OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE (c)) |
3082 | { | |
3083 | lastprivate_firstprivate = true; | |
3084 | if (pass != 0) | |
3085 | continue; | |
3086 | } | |
df2c34fc | 3087 | break; |
bc7bff74 | 3088 | case OMP_CLAUSE_ALIGNED: |
3089 | if (pass == 0) | |
3090 | continue; | |
3091 | var = OMP_CLAUSE_DECL (c); | |
3092 | if (TREE_CODE (TREE_TYPE (var)) == POINTER_TYPE | |
3093 | && !is_global_var (var)) | |
3094 | { | |
3095 | new_var = maybe_lookup_decl (var, ctx); | |
3096 | if (new_var == NULL_TREE) | |
3097 | new_var = maybe_lookup_decl_in_outer_ctx (var, ctx); | |
3098 | x = builtin_decl_explicit (BUILT_IN_ASSUME_ALIGNED); | |
3099 | x = build_call_expr_loc (clause_loc, x, 2, new_var, | |
3100 | omp_clause_aligned_alignment (c)); | |
3101 | x = fold_convert_loc (clause_loc, TREE_TYPE (new_var), x); | |
3102 | x = build2 (MODIFY_EXPR, TREE_TYPE (new_var), new_var, x); | |
3103 | gimplify_and_add (x, ilist); | |
3104 | } | |
3105 | else if (TREE_CODE (TREE_TYPE (var)) == ARRAY_TYPE | |
3106 | && is_global_var (var)) | |
3107 | { | |
3108 | tree ptype = build_pointer_type (TREE_TYPE (var)), t, t2; | |
3109 | new_var = lookup_decl (var, ctx); | |
3110 | t = maybe_lookup_decl_in_outer_ctx (var, ctx); | |
3111 | t = build_fold_addr_expr_loc (clause_loc, t); | |
3112 | t2 = builtin_decl_explicit (BUILT_IN_ASSUME_ALIGNED); | |
3113 | t = build_call_expr_loc (clause_loc, t2, 2, t, | |
3114 | omp_clause_aligned_alignment (c)); | |
3115 | t = fold_convert_loc (clause_loc, ptype, t); | |
3116 | x = create_tmp_var (ptype, NULL); | |
3117 | t = build2 (MODIFY_EXPR, ptype, x, t); | |
3118 | gimplify_and_add (t, ilist); | |
3119 | t = build_simple_mem_ref_loc (clause_loc, x); | |
3120 | SET_DECL_VALUE_EXPR (new_var, t); | |
3121 | DECL_HAS_VALUE_EXPR_P (new_var) = 1; | |
3122 | } | |
3123 | continue; | |
1e8e9920 | 3124 | default: |
3125 | continue; | |
3126 | } | |
3127 | ||
3128 | new_var = var = OMP_CLAUSE_DECL (c); | |
3129 | if (c_kind != OMP_CLAUSE_COPYIN) | |
3130 | new_var = lookup_decl (var, ctx); | |
3131 | ||
3132 | if (c_kind == OMP_CLAUSE_SHARED || c_kind == OMP_CLAUSE_COPYIN) | |
3133 | { | |
3134 | if (pass != 0) | |
3135 | continue; | |
3136 | } | |
1e8e9920 | 3137 | else if (is_variable_sized (var)) |
3138 | { | |
773c5ba7 | 3139 | /* For variable sized types, we need to allocate the |
3140 | actual storage here. Call alloca and store the | |
3141 | result in the pointer decl that we created elsewhere. */ | |
1e8e9920 | 3142 | if (pass == 0) |
3143 | continue; | |
3144 | ||
fd6481cf | 3145 | if (c_kind != OMP_CLAUSE_FIRSTPRIVATE || !is_task_ctx (ctx)) |
3146 | { | |
75a70cf9 | 3147 | gimple stmt; |
b9a16870 | 3148 | tree tmp, atmp; |
75a70cf9 | 3149 | |
fd6481cf | 3150 | ptr = DECL_VALUE_EXPR (new_var); |
3151 | gcc_assert (TREE_CODE (ptr) == INDIRECT_REF); | |
3152 | ptr = TREE_OPERAND (ptr, 0); | |
3153 | gcc_assert (DECL_P (ptr)); | |
3154 | x = TYPE_SIZE_UNIT (TREE_TYPE (new_var)); | |
75a70cf9 | 3155 | |
3156 | /* void *tmp = __builtin_alloca */ | |
b9a16870 | 3157 | atmp = builtin_decl_explicit (BUILT_IN_ALLOCA); |
3158 | stmt = gimple_build_call (atmp, 1, x); | |
75a70cf9 | 3159 | tmp = create_tmp_var_raw (ptr_type_node, NULL); |
3160 | gimple_add_tmp_var (tmp); | |
3161 | gimple_call_set_lhs (stmt, tmp); | |
3162 | ||
3163 | gimple_seq_add_stmt (ilist, stmt); | |
3164 | ||
389dd41b | 3165 | x = fold_convert_loc (clause_loc, TREE_TYPE (ptr), tmp); |
75a70cf9 | 3166 | gimplify_assign (ptr, x, ilist); |
fd6481cf | 3167 | } |
1e8e9920 | 3168 | } |
1e8e9920 | 3169 | else if (is_reference (var)) |
3170 | { | |
773c5ba7 | 3171 | /* For references that are being privatized for Fortran, |
3172 | allocate new backing storage for the new pointer | |
3173 | variable. This allows us to avoid changing all the | |
3174 | code that expects a pointer to something that expects | |
bc7bff74 | 3175 | a direct variable. */ |
1e8e9920 | 3176 | if (pass == 0) |
3177 | continue; | |
3178 | ||
3179 | x = TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (new_var))); | |
fd6481cf | 3180 | if (c_kind == OMP_CLAUSE_FIRSTPRIVATE && is_task_ctx (ctx)) |
3181 | { | |
3182 | x = build_receiver_ref (var, false, ctx); | |
389dd41b | 3183 | x = build_fold_addr_expr_loc (clause_loc, x); |
fd6481cf | 3184 | } |
3185 | else if (TREE_CONSTANT (x)) | |
1e8e9920 | 3186 | { |
09d1c205 | 3187 | /* For reduction with placeholder in SIMD loop, |
3188 | defer adding the initialization of the reference, | |
3189 | because if we decide to use SIMD array for it, | |
3190 | the initilization could cause expansion ICE. */ | |
3191 | if (c_kind == OMP_CLAUSE_REDUCTION | |
3192 | && OMP_CLAUSE_REDUCTION_PLACEHOLDER (c) | |
3193 | && is_simd) | |
3194 | x = NULL_TREE; | |
3195 | else | |
3196 | { | |
3197 | const char *name = NULL; | |
3198 | if (DECL_NAME (var)) | |
3199 | name = IDENTIFIER_POINTER (DECL_NAME (new_var)); | |
3200 | ||
3201 | x = create_tmp_var_raw (TREE_TYPE (TREE_TYPE (new_var)), | |
3202 | name); | |
3203 | gimple_add_tmp_var (x); | |
3204 | TREE_ADDRESSABLE (x) = 1; | |
3205 | x = build_fold_addr_expr_loc (clause_loc, x); | |
3206 | } | |
1e8e9920 | 3207 | } |
3208 | else | |
3209 | { | |
b9a16870 | 3210 | tree atmp = builtin_decl_explicit (BUILT_IN_ALLOCA); |
3211 | x = build_call_expr_loc (clause_loc, atmp, 1, x); | |
1e8e9920 | 3212 | } |
3213 | ||
09d1c205 | 3214 | if (x) |
3215 | { | |
3216 | x = fold_convert_loc (clause_loc, TREE_TYPE (new_var), x); | |
3217 | gimplify_assign (new_var, x, ilist); | |
3218 | } | |
1e8e9920 | 3219 | |
182cf5a9 | 3220 | new_var = build_simple_mem_ref_loc (clause_loc, new_var); |
1e8e9920 | 3221 | } |
3222 | else if (c_kind == OMP_CLAUSE_REDUCTION | |
3223 | && OMP_CLAUSE_REDUCTION_PLACEHOLDER (c)) | |
3224 | { | |
3225 | if (pass == 0) | |
3226 | continue; | |
3227 | } | |
3228 | else if (pass != 0) | |
3229 | continue; | |
3230 | ||
55d6e7cd | 3231 | switch (OMP_CLAUSE_CODE (c)) |
1e8e9920 | 3232 | { |
3233 | case OMP_CLAUSE_SHARED: | |
bc7bff74 | 3234 | /* Ignore shared directives in teams construct. */ |
3235 | if (gimple_code (ctx->stmt) == GIMPLE_OMP_TEAMS) | |
3236 | continue; | |
f49d7bb5 | 3237 | /* Shared global vars are just accessed directly. */ |
3238 | if (is_global_var (new_var)) | |
3239 | break; | |
1e8e9920 | 3240 | /* Set up the DECL_VALUE_EXPR for shared variables now. This |
3241 | needs to be delayed until after fixup_child_record_type so | |
3242 | that we get the correct type during the dereference. */ | |
e8a588af | 3243 | by_ref = use_pointer_for_field (var, ctx); |
1e8e9920 | 3244 | x = build_receiver_ref (var, by_ref, ctx); |
3245 | SET_DECL_VALUE_EXPR (new_var, x); | |
3246 | DECL_HAS_VALUE_EXPR_P (new_var) = 1; | |
3247 | ||
3248 | /* ??? If VAR is not passed by reference, and the variable | |
3249 | hasn't been initialized yet, then we'll get a warning for | |
3250 | the store into the omp_data_s structure. Ideally, we'd be | |
48e1416a | 3251 | able to notice this and not store anything at all, but |
1e8e9920 | 3252 | we're generating code too early. Suppress the warning. */ |
3253 | if (!by_ref) | |
3254 | TREE_NO_WARNING (var) = 1; | |
3255 | break; | |
3256 | ||
3257 | case OMP_CLAUSE_LASTPRIVATE: | |
3258 | if (OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE (c)) | |
3259 | break; | |
3260 | /* FALLTHRU */ | |
3261 | ||
3262 | case OMP_CLAUSE_PRIVATE: | |
fd6481cf | 3263 | if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_PRIVATE) |
3264 | x = build_outer_var_ref (var, ctx); | |
3265 | else if (OMP_CLAUSE_PRIVATE_OUTER_REF (c)) | |
3266 | { | |
3267 | if (is_task_ctx (ctx)) | |
3268 | x = build_receiver_ref (var, false, ctx); | |
3269 | else | |
3270 | x = build_outer_var_ref (var, ctx); | |
3271 | } | |
3272 | else | |
3273 | x = NULL; | |
3d483a94 | 3274 | do_private: |
bc7bff74 | 3275 | tree nx; |
3276 | nx = lang_hooks.decls.omp_clause_default_ctor (c, new_var, x); | |
3d483a94 | 3277 | if (is_simd) |
3278 | { | |
3279 | tree y = lang_hooks.decls.omp_clause_dtor (c, new_var); | |
bc7bff74 | 3280 | if ((TREE_ADDRESSABLE (new_var) || nx || y |
3d483a94 | 3281 | || OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LASTPRIVATE) |
3282 | && lower_rec_simd_input_clauses (new_var, ctx, max_vf, | |
3283 | idx, lane, ivar, lvar)) | |
3284 | { | |
bc7bff74 | 3285 | if (nx) |
3d483a94 | 3286 | x = lang_hooks.decls.omp_clause_default_ctor |
3287 | (c, unshare_expr (ivar), x); | |
bc7bff74 | 3288 | if (nx && x) |
3d483a94 | 3289 | gimplify_and_add (x, &llist[0]); |
3290 | if (y) | |
3291 | { | |
3292 | y = lang_hooks.decls.omp_clause_dtor (c, ivar); | |
3293 | if (y) | |
3294 | { | |
3295 | gimple_seq tseq = NULL; | |
3296 | ||
3297 | dtor = y; | |
3298 | gimplify_stmt (&dtor, &tseq); | |
3299 | gimple_seq_add_seq (&llist[1], tseq); | |
3300 | } | |
3301 | } | |
3302 | break; | |
3303 | } | |
3304 | } | |
bc7bff74 | 3305 | if (nx) |
3306 | gimplify_and_add (nx, ilist); | |
1e8e9920 | 3307 | /* FALLTHRU */ |
3308 | ||
3309 | do_dtor: | |
3310 | x = lang_hooks.decls.omp_clause_dtor (c, new_var); | |
3311 | if (x) | |
3312 | { | |
75a70cf9 | 3313 | gimple_seq tseq = NULL; |
3314 | ||
1e8e9920 | 3315 | dtor = x; |
75a70cf9 | 3316 | gimplify_stmt (&dtor, &tseq); |
e3a19533 | 3317 | gimple_seq_add_seq (dlist, tseq); |
1e8e9920 | 3318 | } |
3319 | break; | |
3320 | ||
3d483a94 | 3321 | case OMP_CLAUSE_LINEAR: |
3322 | if (!OMP_CLAUSE_LINEAR_NO_COPYIN (c)) | |
3323 | goto do_firstprivate; | |
3324 | if (OMP_CLAUSE_LINEAR_NO_COPYOUT (c)) | |
3325 | x = NULL; | |
3326 | else | |
3327 | x = build_outer_var_ref (var, ctx); | |
3328 | goto do_private; | |
3329 | ||
1e8e9920 | 3330 | case OMP_CLAUSE_FIRSTPRIVATE: |
fd6481cf | 3331 | if (is_task_ctx (ctx)) |
3332 | { | |
3333 | if (is_reference (var) || is_variable_sized (var)) | |
3334 | goto do_dtor; | |
3335 | else if (is_global_var (maybe_lookup_decl_in_outer_ctx (var, | |
3336 | ctx)) | |
3337 | || use_pointer_for_field (var, NULL)) | |
3338 | { | |
3339 | x = build_receiver_ref (var, false, ctx); | |
3340 | SET_DECL_VALUE_EXPR (new_var, x); | |
3341 | DECL_HAS_VALUE_EXPR_P (new_var) = 1; | |
3342 | goto do_dtor; | |
3343 | } | |
3344 | } | |
3d483a94 | 3345 | do_firstprivate: |
1e8e9920 | 3346 | x = build_outer_var_ref (var, ctx); |
3d483a94 | 3347 | if (is_simd) |
3348 | { | |
bc7bff74 | 3349 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LINEAR |
3350 | && gimple_omp_for_combined_into_p (ctx->stmt)) | |
3351 | { | |
3352 | tree stept = POINTER_TYPE_P (TREE_TYPE (x)) | |
3353 | ? sizetype : TREE_TYPE (x); | |
3354 | tree t = fold_convert (stept, | |
3355 | OMP_CLAUSE_LINEAR_STEP (c)); | |
3356 | tree c = find_omp_clause (clauses, | |
3357 | OMP_CLAUSE__LOOPTEMP_); | |
3358 | gcc_assert (c); | |
3359 | tree l = OMP_CLAUSE_DECL (c); | |
3360 | if (fd->collapse == 1) | |
3361 | { | |
3362 | tree n1 = fd->loop.n1; | |
3363 | tree step = fd->loop.step; | |
3364 | tree itype = TREE_TYPE (l); | |
3365 | if (POINTER_TYPE_P (itype)) | |
3366 | itype = signed_type_for (itype); | |
3367 | l = fold_build2 (MINUS_EXPR, itype, l, n1); | |
3368 | if (TYPE_UNSIGNED (itype) | |
3369 | && fd->loop.cond_code == GT_EXPR) | |
3370 | l = fold_build2 (TRUNC_DIV_EXPR, itype, | |
3371 | fold_build1 (NEGATE_EXPR, | |
3372 | itype, l), | |
3373 | fold_build1 (NEGATE_EXPR, | |
3374 | itype, step)); | |
3375 | else | |
3376 | l = fold_build2 (TRUNC_DIV_EXPR, itype, l, step); | |
3377 | } | |
3378 | t = fold_build2 (MULT_EXPR, stept, | |
3379 | fold_convert (stept, l), t); | |
3380 | if (POINTER_TYPE_P (TREE_TYPE (x))) | |
3381 | x = fold_build2 (POINTER_PLUS_EXPR, | |
3382 | TREE_TYPE (x), x, t); | |
3383 | else | |
3384 | x = fold_build2 (PLUS_EXPR, TREE_TYPE (x), x, t); | |
3385 | } | |
3386 | ||
3d483a94 | 3387 | if ((OMP_CLAUSE_CODE (c) != OMP_CLAUSE_LINEAR |
3388 | || TREE_ADDRESSABLE (new_var)) | |
3389 | && lower_rec_simd_input_clauses (new_var, ctx, max_vf, | |
3390 | idx, lane, ivar, lvar)) | |
3391 | { | |
3392 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LINEAR) | |
3393 | { | |
3394 | tree iv = create_tmp_var (TREE_TYPE (new_var), NULL); | |
3395 | x = lang_hooks.decls.omp_clause_copy_ctor (c, iv, x); | |
3396 | gimplify_and_add (x, ilist); | |
3397 | gimple_stmt_iterator gsi | |
3398 | = gsi_start_1 (gimple_omp_body_ptr (ctx->stmt)); | |
3399 | gimple g | |
3400 | = gimple_build_assign (unshare_expr (lvar), iv); | |
3401 | gsi_insert_before_without_update (&gsi, g, | |
3402 | GSI_SAME_STMT); | |
3403 | tree stept = POINTER_TYPE_P (TREE_TYPE (x)) | |
3404 | ? sizetype : TREE_TYPE (x); | |
3405 | tree t = fold_convert (stept, | |
3406 | OMP_CLAUSE_LINEAR_STEP (c)); | |
3407 | enum tree_code code = PLUS_EXPR; | |
3408 | if (POINTER_TYPE_P (TREE_TYPE (new_var))) | |
3409 | code = POINTER_PLUS_EXPR; | |
3410 | g = gimple_build_assign_with_ops (code, iv, iv, t); | |
3411 | gsi_insert_before_without_update (&gsi, g, | |
3412 | GSI_SAME_STMT); | |
3413 | break; | |
3414 | } | |
3415 | x = lang_hooks.decls.omp_clause_copy_ctor | |
3416 | (c, unshare_expr (ivar), x); | |
3417 | gimplify_and_add (x, &llist[0]); | |
3418 | x = lang_hooks.decls.omp_clause_dtor (c, ivar); | |
3419 | if (x) | |
3420 | { | |
3421 | gimple_seq tseq = NULL; | |
3422 | ||
3423 | dtor = x; | |
3424 | gimplify_stmt (&dtor, &tseq); | |
3425 | gimple_seq_add_seq (&llist[1], tseq); | |
3426 | } | |
3427 | break; | |
3428 | } | |
3429 | } | |
1e8e9920 | 3430 | x = lang_hooks.decls.omp_clause_copy_ctor (c, new_var, x); |
3431 | gimplify_and_add (x, ilist); | |
3432 | goto do_dtor; | |
1e8e9920 | 3433 | |
bc7bff74 | 3434 | case OMP_CLAUSE__LOOPTEMP_: |
3435 | gcc_assert (is_parallel_ctx (ctx)); | |
3436 | x = build_outer_var_ref (var, ctx); | |
3437 | x = build2 (MODIFY_EXPR, TREE_TYPE (new_var), new_var, x); | |
3438 | gimplify_and_add (x, ilist); | |
3439 | break; | |
3440 | ||
1e8e9920 | 3441 | case OMP_CLAUSE_COPYIN: |
e8a588af | 3442 | by_ref = use_pointer_for_field (var, NULL); |
1e8e9920 | 3443 | x = build_receiver_ref (var, by_ref, ctx); |
3444 | x = lang_hooks.decls.omp_clause_assign_op (c, new_var, x); | |
3445 | append_to_statement_list (x, ©in_seq); | |
3446 | copyin_by_ref |= by_ref; | |
3447 | break; | |
3448 | ||
3449 | case OMP_CLAUSE_REDUCTION: | |
3450 | if (OMP_CLAUSE_REDUCTION_PLACEHOLDER (c)) | |
3451 | { | |
fd6481cf | 3452 | tree placeholder = OMP_CLAUSE_REDUCTION_PLACEHOLDER (c); |
bc7bff74 | 3453 | gimple tseq; |
fd6481cf | 3454 | x = build_outer_var_ref (var, ctx); |
3455 | ||
bc7bff74 | 3456 | if (is_reference (var) |
3457 | && !useless_type_conversion_p (TREE_TYPE (placeholder), | |
3458 | TREE_TYPE (x))) | |
389dd41b | 3459 | x = build_fold_addr_expr_loc (clause_loc, x); |
fd6481cf | 3460 | SET_DECL_VALUE_EXPR (placeholder, x); |
3461 | DECL_HAS_VALUE_EXPR_P (placeholder) = 1; | |
bc7bff74 | 3462 | tree new_vard = new_var; |
3463 | if (is_reference (var)) | |
3464 | { | |
3465 | gcc_assert (TREE_CODE (new_var) == MEM_REF); | |
3466 | new_vard = TREE_OPERAND (new_var, 0); | |
3467 | gcc_assert (DECL_P (new_vard)); | |
3468 | } | |
3d483a94 | 3469 | if (is_simd |
3470 | && lower_rec_simd_input_clauses (new_var, ctx, max_vf, | |
3471 | idx, lane, ivar, lvar)) | |
3472 | { | |
bc7bff74 | 3473 | if (new_vard == new_var) |
3474 | { | |
3475 | gcc_assert (DECL_VALUE_EXPR (new_var) == lvar); | |
3476 | SET_DECL_VALUE_EXPR (new_var, ivar); | |
3477 | } | |
3478 | else | |
3479 | { | |
3480 | SET_DECL_VALUE_EXPR (new_vard, | |
3481 | build_fold_addr_expr (ivar)); | |
3482 | DECL_HAS_VALUE_EXPR_P (new_vard) = 1; | |
3483 | } | |
3484 | x = lang_hooks.decls.omp_clause_default_ctor | |
3485 | (c, unshare_expr (ivar), | |
3486 | build_outer_var_ref (var, ctx)); | |
3487 | if (x) | |
3488 | gimplify_and_add (x, &llist[0]); | |
3489 | if (OMP_CLAUSE_REDUCTION_GIMPLE_INIT (c)) | |
3490 | { | |
3491 | tseq = OMP_CLAUSE_REDUCTION_GIMPLE_INIT (c); | |
3492 | lower_omp (&tseq, ctx); | |
3493 | gimple_seq_add_seq (&llist[0], tseq); | |
3494 | } | |
3495 | OMP_CLAUSE_REDUCTION_GIMPLE_INIT (c) = NULL; | |
3496 | tseq = OMP_CLAUSE_REDUCTION_GIMPLE_MERGE (c); | |
3497 | lower_omp (&tseq, ctx); | |
3498 | gimple_seq_add_seq (&llist[1], tseq); | |
3499 | OMP_CLAUSE_REDUCTION_GIMPLE_MERGE (c) = NULL; | |
3500 | DECL_HAS_VALUE_EXPR_P (placeholder) = 0; | |
3501 | if (new_vard == new_var) | |
3502 | SET_DECL_VALUE_EXPR (new_var, lvar); | |
3503 | else | |
3504 | SET_DECL_VALUE_EXPR (new_vard, | |
3505 | build_fold_addr_expr (lvar)); | |
3506 | x = lang_hooks.decls.omp_clause_dtor (c, ivar); | |
3507 | if (x) | |
3508 | { | |
3509 | tseq = NULL; | |
3510 | dtor = x; | |
3511 | gimplify_stmt (&dtor, &tseq); | |
3512 | gimple_seq_add_seq (&llist[1], tseq); | |
3513 | } | |
3514 | break; | |
3515 | } | |
09d1c205 | 3516 | /* If this is a reference to constant size reduction var |
3517 | with placeholder, we haven't emitted the initializer | |
3518 | for it because it is undesirable if SIMD arrays are used. | |
3519 | But if they aren't used, we need to emit the deferred | |
3520 | initialization now. */ | |
3521 | else if (is_reference (var) && is_simd) | |
3522 | { | |
3523 | tree z | |
3524 | = TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (new_vard))); | |
3525 | if (TREE_CONSTANT (z)) | |
3526 | { | |
3527 | const char *name = NULL; | |
3528 | if (DECL_NAME (var)) | |
3529 | name = IDENTIFIER_POINTER (DECL_NAME (new_vard)); | |
3530 | ||
3531 | z = create_tmp_var_raw | |
3532 | (TREE_TYPE (TREE_TYPE (new_vard)), name); | |
3533 | gimple_add_tmp_var (z); | |
3534 | TREE_ADDRESSABLE (z) = 1; | |
3535 | z = build_fold_addr_expr_loc (clause_loc, z); | |
3536 | gimplify_assign (new_vard, z, ilist); | |
3537 | } | |
3538 | } | |
bc7bff74 | 3539 | x = lang_hooks.decls.omp_clause_default_ctor |
3540 | (c, new_var, unshare_expr (x)); | |
3541 | if (x) | |
3542 | gimplify_and_add (x, ilist); | |
3543 | if (OMP_CLAUSE_REDUCTION_GIMPLE_INIT (c)) | |
3544 | { | |
3545 | tseq = OMP_CLAUSE_REDUCTION_GIMPLE_INIT (c); | |
3546 | lower_omp (&tseq, ctx); | |
3547 | gimple_seq_add_seq (ilist, tseq); | |
3548 | } | |
3549 | OMP_CLAUSE_REDUCTION_GIMPLE_INIT (c) = NULL; | |
3550 | if (is_simd) | |
3551 | { | |
3552 | tseq = OMP_CLAUSE_REDUCTION_GIMPLE_MERGE (c); | |
3553 | lower_omp (&tseq, ctx); | |
3554 | gimple_seq_add_seq (dlist, tseq); | |
3555 | OMP_CLAUSE_REDUCTION_GIMPLE_MERGE (c) = NULL; | |
3556 | } | |
3557 | DECL_HAS_VALUE_EXPR_P (placeholder) = 0; | |
3558 | goto do_dtor; | |
3559 | } | |
3560 | else | |
3561 | { | |
3562 | x = omp_reduction_init (c, TREE_TYPE (new_var)); | |
3563 | gcc_assert (TREE_CODE (TREE_TYPE (new_var)) != ARRAY_TYPE); | |
c22ad515 | 3564 | enum tree_code code = OMP_CLAUSE_REDUCTION_CODE (c); |
3565 | ||
3566 | /* reduction(-:var) sums up the partial results, so it | |
3567 | acts identically to reduction(+:var). */ | |
3568 | if (code == MINUS_EXPR) | |
3569 | code = PLUS_EXPR; | |
3570 | ||
bc7bff74 | 3571 | if (is_simd |
3572 | && lower_rec_simd_input_clauses (new_var, ctx, max_vf, | |
3573 | idx, lane, ivar, lvar)) | |
3574 | { | |
bc7bff74 | 3575 | tree ref = build_outer_var_ref (var, ctx); |
3576 | ||
3577 | gimplify_assign (unshare_expr (ivar), x, &llist[0]); | |
3578 | ||
bc7bff74 | 3579 | x = build2 (code, TREE_TYPE (ref), ref, ivar); |
3d483a94 | 3580 | ref = build_outer_var_ref (var, ctx); |
3581 | gimplify_assign (ref, x, &llist[1]); | |
3582 | } | |
3583 | else | |
3584 | { | |
3585 | gimplify_assign (new_var, x, ilist); | |
3586 | if (is_simd) | |
c22ad515 | 3587 | { |
3588 | tree ref = build_outer_var_ref (var, ctx); | |
3589 | ||
3590 | x = build2 (code, TREE_TYPE (ref), ref, new_var); | |
3591 | ref = build_outer_var_ref (var, ctx); | |
3592 | gimplify_assign (ref, x, dlist); | |
3593 | } | |
3d483a94 | 3594 | } |
1e8e9920 | 3595 | } |
3596 | break; | |
3597 | ||
3598 | default: | |
3599 | gcc_unreachable (); | |
3600 | } | |
3601 | } | |
3602 | } | |
3603 | ||
3d483a94 | 3604 | if (lane) |
3605 | { | |
3606 | tree uid = create_tmp_var (ptr_type_node, "simduid"); | |
8e1a382d | 3607 | /* Don't want uninit warnings on simduid, it is always uninitialized, |
3608 | but we use it not for the value, but for the DECL_UID only. */ | |
3609 | TREE_NO_WARNING (uid) = 1; | |
3d483a94 | 3610 | gimple g |
3611 | = gimple_build_call_internal (IFN_GOMP_SIMD_LANE, 1, uid); | |
3612 | gimple_call_set_lhs (g, lane); | |
3613 | gimple_stmt_iterator gsi = gsi_start_1 (gimple_omp_body_ptr (ctx->stmt)); | |
3614 | gsi_insert_before_without_update (&gsi, g, GSI_SAME_STMT); | |
3615 | c = build_omp_clause (UNKNOWN_LOCATION, OMP_CLAUSE__SIMDUID_); | |
3616 | OMP_CLAUSE__SIMDUID__DECL (c) = uid; | |
3617 | OMP_CLAUSE_CHAIN (c) = gimple_omp_for_clauses (ctx->stmt); | |
3618 | gimple_omp_for_set_clauses (ctx->stmt, c); | |
3619 | g = gimple_build_assign_with_ops (INTEGER_CST, lane, | |
3620 | build_int_cst (unsigned_type_node, 0), | |
3621 | NULL_TREE); | |
3622 | gimple_seq_add_stmt (ilist, g); | |
3623 | for (int i = 0; i < 2; i++) | |
3624 | if (llist[i]) | |
3625 | { | |
3626 | tree vf = create_tmp_var (unsigned_type_node, NULL); | |
3627 | g = gimple_build_call_internal (IFN_GOMP_SIMD_VF, 1, uid); | |
3628 | gimple_call_set_lhs (g, vf); | |
3629 | gimple_seq *seq = i == 0 ? ilist : dlist; | |
3630 | gimple_seq_add_stmt (seq, g); | |
3631 | tree t = build_int_cst (unsigned_type_node, 0); | |
3632 | g = gimple_build_assign_with_ops (INTEGER_CST, idx, t, NULL_TREE); | |
3633 | gimple_seq_add_stmt (seq, g); | |
3634 | tree body = create_artificial_label (UNKNOWN_LOCATION); | |
3635 | tree header = create_artificial_label (UNKNOWN_LOCATION); | |
3636 | tree end = create_artificial_label (UNKNOWN_LOCATION); | |
3637 | gimple_seq_add_stmt (seq, gimple_build_goto (header)); | |
3638 | gimple_seq_add_stmt (seq, gimple_build_label (body)); | |
3639 | gimple_seq_add_seq (seq, llist[i]); | |
3640 | t = build_int_cst (unsigned_type_node, 1); | |
3641 | g = gimple_build_assign_with_ops (PLUS_EXPR, idx, idx, t); | |
3642 | gimple_seq_add_stmt (seq, g); | |
3643 | gimple_seq_add_stmt (seq, gimple_build_label (header)); | |
3644 | g = gimple_build_cond (LT_EXPR, idx, vf, body, end); | |
3645 | gimple_seq_add_stmt (seq, g); | |
3646 | gimple_seq_add_stmt (seq, gimple_build_label (end)); | |
3647 | } | |
3648 | } | |
3649 | ||
1e8e9920 | 3650 | /* The copyin sequence is not to be executed by the main thread, since |
3651 | that would result in self-copies. Perhaps not visible to scalars, | |
3652 | but it certainly is to C++ operator=. */ | |
3653 | if (copyin_seq) | |
3654 | { | |
b9a16870 | 3655 | x = build_call_expr (builtin_decl_explicit (BUILT_IN_OMP_GET_THREAD_NUM), |
3656 | 0); | |
1e8e9920 | 3657 | x = build2 (NE_EXPR, boolean_type_node, x, |
3658 | build_int_cst (TREE_TYPE (x), 0)); | |
3659 | x = build3 (COND_EXPR, void_type_node, x, copyin_seq, NULL); | |
3660 | gimplify_and_add (x, ilist); | |
3661 | } | |
3662 | ||
3663 | /* If any copyin variable is passed by reference, we must ensure the | |
3664 | master thread doesn't modify it before it is copied over in all | |
f49d7bb5 | 3665 | threads. Similarly for variables in both firstprivate and |
3666 | lastprivate clauses we need to ensure the lastprivate copying | |
bc7bff74 | 3667 | happens after firstprivate copying in all threads. And similarly |
3668 | for UDRs if initializer expression refers to omp_orig. */ | |
3669 | if (copyin_by_ref || lastprivate_firstprivate || reduction_omp_orig_ref) | |
3d483a94 | 3670 | { |
3671 | /* Don't add any barrier for #pragma omp simd or | |
3672 | #pragma omp distribute. */ | |
3673 | if (gimple_code (ctx->stmt) != GIMPLE_OMP_FOR | |
f2697631 | 3674 | || gimple_omp_for_kind (ctx->stmt) & GF_OMP_FOR_KIND_FOR) |
bc7bff74 | 3675 | gimple_seq_add_stmt (ilist, build_omp_barrier (NULL_TREE)); |
3d483a94 | 3676 | } |
3677 | ||
3678 | /* If max_vf is non-zero, then we can use only a vectorization factor | |
3679 | up to the max_vf we chose. So stick it into the safelen clause. */ | |
3680 | if (max_vf) | |
3681 | { | |
3682 | tree c = find_omp_clause (gimple_omp_for_clauses (ctx->stmt), | |
3683 | OMP_CLAUSE_SAFELEN); | |
3684 | if (c == NULL_TREE | |
3685 | || compare_tree_int (OMP_CLAUSE_SAFELEN_EXPR (c), | |
3686 | max_vf) == 1) | |
3687 | { | |
3688 | c = build_omp_clause (UNKNOWN_LOCATION, OMP_CLAUSE_SAFELEN); | |
3689 | OMP_CLAUSE_SAFELEN_EXPR (c) = build_int_cst (integer_type_node, | |
3690 | max_vf); | |
3691 | OMP_CLAUSE_CHAIN (c) = gimple_omp_for_clauses (ctx->stmt); | |
3692 | gimple_omp_for_set_clauses (ctx->stmt, c); | |
3693 | } | |
3694 | } | |
1e8e9920 | 3695 | } |
3696 | ||
773c5ba7 | 3697 | |
1e8e9920 | 3698 | /* Generate code to implement the LASTPRIVATE clauses. This is used for |
3699 | both parallel and workshare constructs. PREDICATE may be NULL if it's | |
3700 | always true. */ | |
3701 | ||
3702 | static void | |
75a70cf9 | 3703 | lower_lastprivate_clauses (tree clauses, tree predicate, gimple_seq *stmt_list, |
bc7bff74 | 3704 | omp_context *ctx) |
1e8e9920 | 3705 | { |
3d483a94 | 3706 | tree x, c, label = NULL, orig_clauses = clauses; |
fd6481cf | 3707 | bool par_clauses = false; |
3d483a94 | 3708 | tree simduid = NULL, lastlane = NULL; |
1e8e9920 | 3709 | |
3d483a94 | 3710 | /* Early exit if there are no lastprivate or linear clauses. */ |
3711 | for (; clauses ; clauses = OMP_CLAUSE_CHAIN (clauses)) | |
3712 | if (OMP_CLAUSE_CODE (clauses) == OMP_CLAUSE_LASTPRIVATE | |
3713 | || (OMP_CLAUSE_CODE (clauses) == OMP_CLAUSE_LINEAR | |
3714 | && !OMP_CLAUSE_LINEAR_NO_COPYOUT (clauses))) | |
3715 | break; | |
1e8e9920 | 3716 | if (clauses == NULL) |
3717 | { | |
3718 | /* If this was a workshare clause, see if it had been combined | |
3719 | with its parallel. In that case, look for the clauses on the | |
3720 | parallel statement itself. */ | |
3721 | if (is_parallel_ctx (ctx)) | |
3722 | return; | |
3723 | ||
3724 | ctx = ctx->outer; | |
3725 | if (ctx == NULL || !is_parallel_ctx (ctx)) | |
3726 | return; | |
3727 | ||
75a70cf9 | 3728 | clauses = find_omp_clause (gimple_omp_parallel_clauses (ctx->stmt), |
1e8e9920 | 3729 | OMP_CLAUSE_LASTPRIVATE); |
3730 | if (clauses == NULL) | |
3731 | return; | |
fd6481cf | 3732 | par_clauses = true; |
1e8e9920 | 3733 | } |
3734 | ||
75a70cf9 | 3735 | if (predicate) |
3736 | { | |
3737 | gimple stmt; | |
3738 | tree label_true, arm1, arm2; | |
3739 | ||
e60a6f7b | 3740 | label = create_artificial_label (UNKNOWN_LOCATION); |
3741 | label_true = create_artificial_label (UNKNOWN_LOCATION); | |
75a70cf9 | 3742 | arm1 = TREE_OPERAND (predicate, 0); |
3743 | arm2 = TREE_OPERAND (predicate, 1); | |
3744 | gimplify_expr (&arm1, stmt_list, NULL, is_gimple_val, fb_rvalue); | |
3745 | gimplify_expr (&arm2, stmt_list, NULL, is_gimple_val, fb_rvalue); | |
3746 | stmt = gimple_build_cond (TREE_CODE (predicate), arm1, arm2, | |
3747 | label_true, label); | |
3748 | gimple_seq_add_stmt (stmt_list, stmt); | |
3749 | gimple_seq_add_stmt (stmt_list, gimple_build_label (label_true)); | |
3750 | } | |
1e8e9920 | 3751 | |
3d483a94 | 3752 | if (gimple_code (ctx->stmt) == GIMPLE_OMP_FOR |
f2697631 | 3753 | && gimple_omp_for_kind (ctx->stmt) & GF_OMP_FOR_KIND_SIMD) |
3d483a94 | 3754 | { |
3755 | simduid = find_omp_clause (orig_clauses, OMP_CLAUSE__SIMDUID_); | |
3756 | if (simduid) | |
3757 | simduid = OMP_CLAUSE__SIMDUID__DECL (simduid); | |
3758 | } | |
3759 | ||
fd6481cf | 3760 | for (c = clauses; c ;) |
1e8e9920 | 3761 | { |
3762 | tree var, new_var; | |
389dd41b | 3763 | location_t clause_loc = OMP_CLAUSE_LOCATION (c); |
1e8e9920 | 3764 | |
3d483a94 | 3765 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LASTPRIVATE |
3766 | || (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LINEAR | |
3767 | && !OMP_CLAUSE_LINEAR_NO_COPYOUT (c))) | |
fd6481cf | 3768 | { |
3769 | var = OMP_CLAUSE_DECL (c); | |
3770 | new_var = lookup_decl (var, ctx); | |
1e8e9920 | 3771 | |
3d483a94 | 3772 | if (simduid && DECL_HAS_VALUE_EXPR_P (new_var)) |
3773 | { | |
3774 | tree val = DECL_VALUE_EXPR (new_var); | |
3775 | if (TREE_CODE (val) == ARRAY_REF | |
3776 | && VAR_P (TREE_OPERAND (val, 0)) | |
3777 | && lookup_attribute ("omp simd array", | |
3778 | DECL_ATTRIBUTES (TREE_OPERAND (val, | |
3779 | 0)))) | |
3780 | { | |
3781 | if (lastlane == NULL) | |
3782 | { | |
3783 | lastlane = create_tmp_var (unsigned_type_node, NULL); | |
3784 | gimple g | |
3785 | = gimple_build_call_internal (IFN_GOMP_SIMD_LAST_LANE, | |
3786 | 2, simduid, | |
3787 | TREE_OPERAND (val, 1)); | |
3788 | gimple_call_set_lhs (g, lastlane); | |
3789 | gimple_seq_add_stmt (stmt_list, g); | |
3790 | } | |
3791 | new_var = build4 (ARRAY_REF, TREE_TYPE (val), | |
3792 | TREE_OPERAND (val, 0), lastlane, | |
3793 | NULL_TREE, NULL_TREE); | |
3794 | } | |
3795 | } | |
3796 | ||
3797 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LASTPRIVATE | |
3798 | && OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ (c)) | |
75a70cf9 | 3799 | { |
e3a19533 | 3800 | lower_omp (&OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ (c), ctx); |
75a70cf9 | 3801 | gimple_seq_add_seq (stmt_list, |
3802 | OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ (c)); | |
3d483a94 | 3803 | OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ (c) = NULL; |
75a70cf9 | 3804 | } |
1e8e9920 | 3805 | |
fd6481cf | 3806 | x = build_outer_var_ref (var, ctx); |
3807 | if (is_reference (var)) | |
182cf5a9 | 3808 | new_var = build_simple_mem_ref_loc (clause_loc, new_var); |
fd6481cf | 3809 | x = lang_hooks.decls.omp_clause_assign_op (c, x, new_var); |
75a70cf9 | 3810 | gimplify_and_add (x, stmt_list); |
fd6481cf | 3811 | } |
3812 | c = OMP_CLAUSE_CHAIN (c); | |
3813 | if (c == NULL && !par_clauses) | |
3814 | { | |
3815 | /* If this was a workshare clause, see if it had been combined | |
3816 | with its parallel. In that case, continue looking for the | |
3817 | clauses also on the parallel statement itself. */ | |
3818 | if (is_parallel_ctx (ctx)) | |
3819 | break; | |
3820 | ||
3821 | ctx = ctx->outer; | |
3822 | if (ctx == NULL || !is_parallel_ctx (ctx)) | |
3823 | break; | |
3824 | ||
75a70cf9 | 3825 | c = find_omp_clause (gimple_omp_parallel_clauses (ctx->stmt), |
fd6481cf | 3826 | OMP_CLAUSE_LASTPRIVATE); |
3827 | par_clauses = true; | |
3828 | } | |
1e8e9920 | 3829 | } |
3830 | ||
75a70cf9 | 3831 | if (label) |
3832 | gimple_seq_add_stmt (stmt_list, gimple_build_label (label)); | |
1e8e9920 | 3833 | } |
3834 | ||
773c5ba7 | 3835 | |
1e8e9920 | 3836 | /* Generate code to implement the REDUCTION clauses. */ |
3837 | ||
3838 | static void | |
75a70cf9 | 3839 | lower_reduction_clauses (tree clauses, gimple_seq *stmt_seqp, omp_context *ctx) |
1e8e9920 | 3840 | { |
75a70cf9 | 3841 | gimple_seq sub_seq = NULL; |
3842 | gimple stmt; | |
3843 | tree x, c; | |
1e8e9920 | 3844 | int count = 0; |
3845 | ||
3d483a94 | 3846 | /* SIMD reductions are handled in lower_rec_input_clauses. */ |
3847 | if (gimple_code (ctx->stmt) == GIMPLE_OMP_FOR | |
f2697631 | 3848 | && gimple_omp_for_kind (ctx->stmt) & GF_OMP_FOR_KIND_SIMD) |
3d483a94 | 3849 | return; |
3850 | ||
1e8e9920 | 3851 | /* First see if there is exactly one reduction clause. Use OMP_ATOMIC |
3852 | update in that case, otherwise use a lock. */ | |
3853 | for (c = clauses; c && count < 2; c = OMP_CLAUSE_CHAIN (c)) | |
55d6e7cd | 3854 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_REDUCTION) |
1e8e9920 | 3855 | { |
3856 | if (OMP_CLAUSE_REDUCTION_PLACEHOLDER (c)) | |
3857 | { | |
bc7bff74 | 3858 | /* Never use OMP_ATOMIC for array reductions or UDRs. */ |
1e8e9920 | 3859 | count = -1; |
3860 | break; | |
3861 | } | |
3862 | count++; | |
3863 | } | |
3864 | ||
3865 | if (count == 0) | |
3866 | return; | |
3867 | ||
3868 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
3869 | { | |
3870 | tree var, ref, new_var; | |
3871 | enum tree_code code; | |
389dd41b | 3872 | location_t clause_loc = OMP_CLAUSE_LOCATION (c); |
1e8e9920 | 3873 | |
55d6e7cd | 3874 | if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_REDUCTION) |
1e8e9920 | 3875 | continue; |
3876 | ||
3877 | var = OMP_CLAUSE_DECL (c); | |
3878 | new_var = lookup_decl (var, ctx); | |
3879 | if (is_reference (var)) | |
182cf5a9 | 3880 | new_var = build_simple_mem_ref_loc (clause_loc, new_var); |
1e8e9920 | 3881 | ref = build_outer_var_ref (var, ctx); |
3882 | code = OMP_CLAUSE_REDUCTION_CODE (c); | |
773c5ba7 | 3883 | |
3884 | /* reduction(-:var) sums up the partial results, so it acts | |
3885 | identically to reduction(+:var). */ | |
1e8e9920 | 3886 | if (code == MINUS_EXPR) |
3887 | code = PLUS_EXPR; | |
3888 | ||
3889 | if (count == 1) | |
3890 | { | |
389dd41b | 3891 | tree addr = build_fold_addr_expr_loc (clause_loc, ref); |
1e8e9920 | 3892 | |
3893 | addr = save_expr (addr); | |
3894 | ref = build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (addr)), addr); | |
389dd41b | 3895 | x = fold_build2_loc (clause_loc, code, TREE_TYPE (ref), ref, new_var); |
1e8e9920 | 3896 | x = build2 (OMP_ATOMIC, void_type_node, addr, x); |
75a70cf9 | 3897 | gimplify_and_add (x, stmt_seqp); |
1e8e9920 | 3898 | return; |
3899 | } | |
3900 | ||
3901 | if (OMP_CLAUSE_REDUCTION_PLACEHOLDER (c)) | |
3902 | { | |
3903 | tree placeholder = OMP_CLAUSE_REDUCTION_PLACEHOLDER (c); | |
3904 | ||
bc7bff74 | 3905 | if (is_reference (var) |
3906 | && !useless_type_conversion_p (TREE_TYPE (placeholder), | |
3907 | TREE_TYPE (ref))) | |
389dd41b | 3908 | ref = build_fold_addr_expr_loc (clause_loc, ref); |
1e8e9920 | 3909 | SET_DECL_VALUE_EXPR (placeholder, ref); |
3910 | DECL_HAS_VALUE_EXPR_P (placeholder) = 1; | |
e3a19533 | 3911 | lower_omp (&OMP_CLAUSE_REDUCTION_GIMPLE_MERGE (c), ctx); |
75a70cf9 | 3912 | gimple_seq_add_seq (&sub_seq, OMP_CLAUSE_REDUCTION_GIMPLE_MERGE (c)); |
3913 | OMP_CLAUSE_REDUCTION_GIMPLE_MERGE (c) = NULL; | |
1e8e9920 | 3914 | OMP_CLAUSE_REDUCTION_PLACEHOLDER (c) = NULL; |
3915 | } | |
3916 | else | |
3917 | { | |
3918 | x = build2 (code, TREE_TYPE (ref), ref, new_var); | |
3919 | ref = build_outer_var_ref (var, ctx); | |
75a70cf9 | 3920 | gimplify_assign (ref, x, &sub_seq); |
1e8e9920 | 3921 | } |
3922 | } | |
3923 | ||
b9a16870 | 3924 | stmt = gimple_build_call (builtin_decl_explicit (BUILT_IN_GOMP_ATOMIC_START), |
3925 | 0); | |
75a70cf9 | 3926 | gimple_seq_add_stmt (stmt_seqp, stmt); |
1e8e9920 | 3927 | |
75a70cf9 | 3928 | gimple_seq_add_seq (stmt_seqp, sub_seq); |
1e8e9920 | 3929 | |
b9a16870 | 3930 | stmt = gimple_build_call (builtin_decl_explicit (BUILT_IN_GOMP_ATOMIC_END), |
3931 | 0); | |
75a70cf9 | 3932 | gimple_seq_add_stmt (stmt_seqp, stmt); |
1e8e9920 | 3933 | } |
3934 | ||
773c5ba7 | 3935 | |
1e8e9920 | 3936 | /* Generate code to implement the COPYPRIVATE clauses. */ |
3937 | ||
3938 | static void | |
75a70cf9 | 3939 | lower_copyprivate_clauses (tree clauses, gimple_seq *slist, gimple_seq *rlist, |
1e8e9920 | 3940 | omp_context *ctx) |
3941 | { | |
3942 | tree c; | |
3943 | ||
3944 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
3945 | { | |
cb561506 | 3946 | tree var, new_var, ref, x; |
1e8e9920 | 3947 | bool by_ref; |
389dd41b | 3948 | location_t clause_loc = OMP_CLAUSE_LOCATION (c); |
1e8e9920 | 3949 | |
55d6e7cd | 3950 | if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_COPYPRIVATE) |
1e8e9920 | 3951 | continue; |
3952 | ||
3953 | var = OMP_CLAUSE_DECL (c); | |
e8a588af | 3954 | by_ref = use_pointer_for_field (var, NULL); |
1e8e9920 | 3955 | |
3956 | ref = build_sender_ref (var, ctx); | |
cb561506 | 3957 | x = new_var = lookup_decl_in_outer_ctx (var, ctx); |
3958 | if (by_ref) | |
3959 | { | |
3960 | x = build_fold_addr_expr_loc (clause_loc, new_var); | |
3961 | x = fold_convert_loc (clause_loc, TREE_TYPE (ref), x); | |
3962 | } | |
75a70cf9 | 3963 | gimplify_assign (ref, x, slist); |
1e8e9920 | 3964 | |
cb561506 | 3965 | ref = build_receiver_ref (var, false, ctx); |
3966 | if (by_ref) | |
3967 | { | |
3968 | ref = fold_convert_loc (clause_loc, | |
3969 | build_pointer_type (TREE_TYPE (new_var)), | |
3970 | ref); | |
3971 | ref = build_fold_indirect_ref_loc (clause_loc, ref); | |
3972 | } | |
1e8e9920 | 3973 | if (is_reference (var)) |
3974 | { | |
cb561506 | 3975 | ref = fold_convert_loc (clause_loc, TREE_TYPE (new_var), ref); |
182cf5a9 | 3976 | ref = build_simple_mem_ref_loc (clause_loc, ref); |
3977 | new_var = build_simple_mem_ref_loc (clause_loc, new_var); | |
1e8e9920 | 3978 | } |
cb561506 | 3979 | x = lang_hooks.decls.omp_clause_assign_op (c, new_var, ref); |
1e8e9920 | 3980 | gimplify_and_add (x, rlist); |
3981 | } | |
3982 | } | |
3983 | ||
773c5ba7 | 3984 | |
1e8e9920 | 3985 | /* Generate code to implement the clauses, FIRSTPRIVATE, COPYIN, LASTPRIVATE, |
3986 | and REDUCTION from the sender (aka parent) side. */ | |
3987 | ||
3988 | static void | |
75a70cf9 | 3989 | lower_send_clauses (tree clauses, gimple_seq *ilist, gimple_seq *olist, |
3990 | omp_context *ctx) | |
1e8e9920 | 3991 | { |
3992 | tree c; | |
3993 | ||
3994 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
3995 | { | |
773c5ba7 | 3996 | tree val, ref, x, var; |
1e8e9920 | 3997 | bool by_ref, do_in = false, do_out = false; |
389dd41b | 3998 | location_t clause_loc = OMP_CLAUSE_LOCATION (c); |
1e8e9920 | 3999 | |
55d6e7cd | 4000 | switch (OMP_CLAUSE_CODE (c)) |
1e8e9920 | 4001 | { |
fd6481cf | 4002 | case OMP_CLAUSE_PRIVATE: |
4003 | if (OMP_CLAUSE_PRIVATE_OUTER_REF (c)) | |
4004 | break; | |
4005 | continue; | |
1e8e9920 | 4006 | case OMP_CLAUSE_FIRSTPRIVATE: |
4007 | case OMP_CLAUSE_COPYIN: | |
4008 | case OMP_CLAUSE_LASTPRIVATE: | |
4009 | case OMP_CLAUSE_REDUCTION: | |
bc7bff74 | 4010 | case OMP_CLAUSE__LOOPTEMP_: |
1e8e9920 | 4011 | break; |
4012 | default: | |
4013 | continue; | |
4014 | } | |
4015 | ||
87b31375 | 4016 | val = OMP_CLAUSE_DECL (c); |
4017 | var = lookup_decl_in_outer_ctx (val, ctx); | |
773c5ba7 | 4018 | |
f49d7bb5 | 4019 | if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_COPYIN |
4020 | && is_global_var (var)) | |
4021 | continue; | |
1e8e9920 | 4022 | if (is_variable_sized (val)) |
4023 | continue; | |
e8a588af | 4024 | by_ref = use_pointer_for_field (val, NULL); |
1e8e9920 | 4025 | |
55d6e7cd | 4026 | switch (OMP_CLAUSE_CODE (c)) |
1e8e9920 | 4027 | { |
fd6481cf | 4028 | case OMP_CLAUSE_PRIVATE: |
1e8e9920 | 4029 | case OMP_CLAUSE_FIRSTPRIVATE: |
4030 | case OMP_CLAUSE_COPYIN: | |
bc7bff74 | 4031 | case OMP_CLAUSE__LOOPTEMP_: |
1e8e9920 | 4032 | do_in = true; |
4033 | break; | |
4034 | ||
4035 | case OMP_CLAUSE_LASTPRIVATE: | |
4036 | if (by_ref || is_reference (val)) | |
4037 | { | |
4038 | if (OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE (c)) | |
4039 | continue; | |
4040 | do_in = true; | |
4041 | } | |
4042 | else | |
fd6481cf | 4043 | { |
4044 | do_out = true; | |
4045 | if (lang_hooks.decls.omp_private_outer_ref (val)) | |
4046 | do_in = true; | |
4047 | } | |
1e8e9920 | 4048 | break; |
4049 | ||
4050 | case OMP_CLAUSE_REDUCTION: | |
4051 | do_in = true; | |
4052 | do_out = !(by_ref || is_reference (val)); | |
4053 | break; | |
4054 | ||
4055 | default: | |
4056 | gcc_unreachable (); | |
4057 | } | |
4058 | ||
4059 | if (do_in) | |
4060 | { | |
4061 | ref = build_sender_ref (val, ctx); | |
389dd41b | 4062 | x = by_ref ? build_fold_addr_expr_loc (clause_loc, var) : var; |
75a70cf9 | 4063 | gimplify_assign (ref, x, ilist); |
fd6481cf | 4064 | if (is_task_ctx (ctx)) |
4065 | DECL_ABSTRACT_ORIGIN (TREE_OPERAND (ref, 1)) = NULL; | |
1e8e9920 | 4066 | } |
773c5ba7 | 4067 | |
1e8e9920 | 4068 | if (do_out) |
4069 | { | |
4070 | ref = build_sender_ref (val, ctx); | |
75a70cf9 | 4071 | gimplify_assign (var, ref, olist); |
1e8e9920 | 4072 | } |
4073 | } | |
4074 | } | |
4075 | ||
75a70cf9 | 4076 | /* Generate code to implement SHARED from the sender (aka parent) |
4077 | side. This is trickier, since GIMPLE_OMP_PARALLEL_CLAUSES doesn't | |
4078 | list things that got automatically shared. */ | |
1e8e9920 | 4079 | |
4080 | static void | |
75a70cf9 | 4081 | lower_send_shared_vars (gimple_seq *ilist, gimple_seq *olist, omp_context *ctx) |
1e8e9920 | 4082 | { |
fd6481cf | 4083 | tree var, ovar, nvar, f, x, record_type; |
1e8e9920 | 4084 | |
4085 | if (ctx->record_type == NULL) | |
4086 | return; | |
773c5ba7 | 4087 | |
fd6481cf | 4088 | record_type = ctx->srecord_type ? ctx->srecord_type : ctx->record_type; |
1767a056 | 4089 | for (f = TYPE_FIELDS (record_type); f ; f = DECL_CHAIN (f)) |
1e8e9920 | 4090 | { |
4091 | ovar = DECL_ABSTRACT_ORIGIN (f); | |
4092 | nvar = maybe_lookup_decl (ovar, ctx); | |
4093 | if (!nvar || !DECL_HAS_VALUE_EXPR_P (nvar)) | |
4094 | continue; | |
4095 | ||
773c5ba7 | 4096 | /* If CTX is a nested parallel directive. Find the immediately |
4097 | enclosing parallel or workshare construct that contains a | |
4098 | mapping for OVAR. */ | |
87b31375 | 4099 | var = lookup_decl_in_outer_ctx (ovar, ctx); |
773c5ba7 | 4100 | |
e8a588af | 4101 | if (use_pointer_for_field (ovar, ctx)) |
1e8e9920 | 4102 | { |
4103 | x = build_sender_ref (ovar, ctx); | |
773c5ba7 | 4104 | var = build_fold_addr_expr (var); |
75a70cf9 | 4105 | gimplify_assign (x, var, ilist); |
1e8e9920 | 4106 | } |
4107 | else | |
4108 | { | |
4109 | x = build_sender_ref (ovar, ctx); | |
75a70cf9 | 4110 | gimplify_assign (x, var, ilist); |
1e8e9920 | 4111 | |
d2263ebb | 4112 | if (!TREE_READONLY (var) |
4113 | /* We don't need to receive a new reference to a result | |
4114 | or parm decl. In fact we may not store to it as we will | |
4115 | invalidate any pending RSO and generate wrong gimple | |
4116 | during inlining. */ | |
4117 | && !((TREE_CODE (var) == RESULT_DECL | |
4118 | || TREE_CODE (var) == PARM_DECL) | |
4119 | && DECL_BY_REFERENCE (var))) | |
fd6481cf | 4120 | { |
4121 | x = build_sender_ref (ovar, ctx); | |
75a70cf9 | 4122 | gimplify_assign (var, x, olist); |
fd6481cf | 4123 | } |
1e8e9920 | 4124 | } |
4125 | } | |
4126 | } | |
4127 | ||
75a70cf9 | 4128 | |
4129 | /* A convenience function to build an empty GIMPLE_COND with just the | |
4130 | condition. */ | |
4131 | ||
4132 | static gimple | |
4133 | gimple_build_cond_empty (tree cond) | |
4134 | { | |
4135 | enum tree_code pred_code; | |
4136 | tree lhs, rhs; | |
4137 | ||
4138 | gimple_cond_get_ops_from_tree (cond, &pred_code, &lhs, &rhs); | |
4139 | return gimple_build_cond (pred_code, lhs, rhs, NULL_TREE, NULL_TREE); | |
4140 | } | |
4141 | ||
4142 | ||
48e1416a | 4143 | /* Build the function calls to GOMP_parallel_start etc to actually |
773c5ba7 | 4144 | generate the parallel operation. REGION is the parallel region |
4145 | being expanded. BB is the block where to insert the code. WS_ARGS | |
4146 | will be set if this is a call to a combined parallel+workshare | |
4147 | construct, it contains the list of additional arguments needed by | |
4148 | the workshare construct. */ | |
1e8e9920 | 4149 | |
4150 | static void | |
61e47ac8 | 4151 | expand_parallel_call (struct omp_region *region, basic_block bb, |
f1f41a6c | 4152 | gimple entry_stmt, vec<tree, va_gc> *ws_args) |
1e8e9920 | 4153 | { |
bc7bff74 | 4154 | tree t, t1, t2, val, cond, c, clauses, flags; |
75a70cf9 | 4155 | gimple_stmt_iterator gsi; |
4156 | gimple stmt; | |
b9a16870 | 4157 | enum built_in_function start_ix; |
4158 | int start_ix2; | |
389dd41b | 4159 | location_t clause_loc; |
f1f41a6c | 4160 | vec<tree, va_gc> *args; |
773c5ba7 | 4161 | |
75a70cf9 | 4162 | clauses = gimple_omp_parallel_clauses (entry_stmt); |
773c5ba7 | 4163 | |
bc7bff74 | 4164 | /* Determine what flavor of GOMP_parallel we will be |
773c5ba7 | 4165 | emitting. */ |
bc7bff74 | 4166 | start_ix = BUILT_IN_GOMP_PARALLEL; |
773c5ba7 | 4167 | if (is_combined_parallel (region)) |
4168 | { | |
61e47ac8 | 4169 | switch (region->inner->type) |
773c5ba7 | 4170 | { |
75a70cf9 | 4171 | case GIMPLE_OMP_FOR: |
fd6481cf | 4172 | gcc_assert (region->inner->sched_kind != OMP_CLAUSE_SCHEDULE_AUTO); |
bc7bff74 | 4173 | start_ix2 = ((int)BUILT_IN_GOMP_PARALLEL_LOOP_STATIC |
b9a16870 | 4174 | + (region->inner->sched_kind |
4175 | == OMP_CLAUSE_SCHEDULE_RUNTIME | |
4176 | ? 3 : region->inner->sched_kind)); | |
4177 | start_ix = (enum built_in_function)start_ix2; | |
61e47ac8 | 4178 | break; |
75a70cf9 | 4179 | case GIMPLE_OMP_SECTIONS: |
bc7bff74 | 4180 | start_ix = BUILT_IN_GOMP_PARALLEL_SECTIONS; |
61e47ac8 | 4181 | break; |
4182 | default: | |
4183 | gcc_unreachable (); | |
773c5ba7 | 4184 | } |
773c5ba7 | 4185 | } |
1e8e9920 | 4186 | |
4187 | /* By default, the value of NUM_THREADS is zero (selected at run time) | |
4188 | and there is no conditional. */ | |
4189 | cond = NULL_TREE; | |
4190 | val = build_int_cst (unsigned_type_node, 0); | |
bc7bff74 | 4191 | flags = build_int_cst (unsigned_type_node, 0); |
1e8e9920 | 4192 | |
4193 | c = find_omp_clause (clauses, OMP_CLAUSE_IF); | |
4194 | if (c) | |
4195 | cond = OMP_CLAUSE_IF_EXPR (c); | |
4196 | ||
4197 | c = find_omp_clause (clauses, OMP_CLAUSE_NUM_THREADS); | |
4198 | if (c) | |
389dd41b | 4199 | { |
4200 | val = OMP_CLAUSE_NUM_THREADS_EXPR (c); | |
4201 | clause_loc = OMP_CLAUSE_LOCATION (c); | |
4202 | } | |
4203 | else | |
4204 | clause_loc = gimple_location (entry_stmt); | |
1e8e9920 | 4205 | |
bc7bff74 | 4206 | c = find_omp_clause (clauses, OMP_CLAUSE_PROC_BIND); |
4207 | if (c) | |
4208 | flags = build_int_cst (unsigned_type_node, OMP_CLAUSE_PROC_BIND_KIND (c)); | |
4209 | ||
1e8e9920 | 4210 | /* Ensure 'val' is of the correct type. */ |
389dd41b | 4211 | val = fold_convert_loc (clause_loc, unsigned_type_node, val); |
1e8e9920 | 4212 | |
4213 | /* If we found the clause 'if (cond)', build either | |
4214 | (cond != 0) or (cond ? val : 1u). */ | |
4215 | if (cond) | |
4216 | { | |
75a70cf9 | 4217 | gimple_stmt_iterator gsi; |
773c5ba7 | 4218 | |
4219 | cond = gimple_boolify (cond); | |
4220 | ||
1e8e9920 | 4221 | if (integer_zerop (val)) |
389dd41b | 4222 | val = fold_build2_loc (clause_loc, |
4223 | EQ_EXPR, unsigned_type_node, cond, | |
79acaae1 | 4224 | build_int_cst (TREE_TYPE (cond), 0)); |
1e8e9920 | 4225 | else |
773c5ba7 | 4226 | { |
4227 | basic_block cond_bb, then_bb, else_bb; | |
79acaae1 | 4228 | edge e, e_then, e_else; |
75a70cf9 | 4229 | tree tmp_then, tmp_else, tmp_join, tmp_var; |
79acaae1 | 4230 | |
4231 | tmp_var = create_tmp_var (TREE_TYPE (val), NULL); | |
4232 | if (gimple_in_ssa_p (cfun)) | |
4233 | { | |
75a70cf9 | 4234 | tmp_then = make_ssa_name (tmp_var, NULL); |
4235 | tmp_else = make_ssa_name (tmp_var, NULL); | |
4236 | tmp_join = make_ssa_name (tmp_var, NULL); | |
79acaae1 | 4237 | } |
4238 | else | |
4239 | { | |
4240 | tmp_then = tmp_var; | |
4241 | tmp_else = tmp_var; | |
4242 | tmp_join = tmp_var; | |
4243 | } | |
773c5ba7 | 4244 | |
773c5ba7 | 4245 | e = split_block (bb, NULL); |
4246 | cond_bb = e->src; | |
4247 | bb = e->dest; | |
4248 | remove_edge (e); | |
4249 | ||
4250 | then_bb = create_empty_bb (cond_bb); | |
4251 | else_bb = create_empty_bb (then_bb); | |
79acaae1 | 4252 | set_immediate_dominator (CDI_DOMINATORS, then_bb, cond_bb); |
4253 | set_immediate_dominator (CDI_DOMINATORS, else_bb, cond_bb); | |
773c5ba7 | 4254 | |
75a70cf9 | 4255 | stmt = gimple_build_cond_empty (cond); |
4256 | gsi = gsi_start_bb (cond_bb); | |
4257 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
773c5ba7 | 4258 | |
75a70cf9 | 4259 | gsi = gsi_start_bb (then_bb); |
4260 | stmt = gimple_build_assign (tmp_then, val); | |
4261 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
773c5ba7 | 4262 | |
75a70cf9 | 4263 | gsi = gsi_start_bb (else_bb); |
4264 | stmt = gimple_build_assign | |
4265 | (tmp_else, build_int_cst (unsigned_type_node, 1)); | |
4266 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
773c5ba7 | 4267 | |
4268 | make_edge (cond_bb, then_bb, EDGE_TRUE_VALUE); | |
4269 | make_edge (cond_bb, else_bb, EDGE_FALSE_VALUE); | |
f6568ea4 | 4270 | if (current_loops) |
4271 | { | |
4272 | add_bb_to_loop (then_bb, cond_bb->loop_father); | |
4273 | add_bb_to_loop (else_bb, cond_bb->loop_father); | |
4274 | } | |
79acaae1 | 4275 | e_then = make_edge (then_bb, bb, EDGE_FALLTHRU); |
4276 | e_else = make_edge (else_bb, bb, EDGE_FALLTHRU); | |
773c5ba7 | 4277 | |
79acaae1 | 4278 | if (gimple_in_ssa_p (cfun)) |
4279 | { | |
75a70cf9 | 4280 | gimple phi = create_phi_node (tmp_join, bb); |
60d535d2 | 4281 | add_phi_arg (phi, tmp_then, e_then, UNKNOWN_LOCATION); |
4282 | add_phi_arg (phi, tmp_else, e_else, UNKNOWN_LOCATION); | |
79acaae1 | 4283 | } |
4284 | ||
4285 | val = tmp_join; | |
773c5ba7 | 4286 | } |
4287 | ||
75a70cf9 | 4288 | gsi = gsi_start_bb (bb); |
4289 | val = force_gimple_operand_gsi (&gsi, val, true, NULL_TREE, | |
4290 | false, GSI_CONTINUE_LINKING); | |
1e8e9920 | 4291 | } |
4292 | ||
75a70cf9 | 4293 | gsi = gsi_last_bb (bb); |
4294 | t = gimple_omp_parallel_data_arg (entry_stmt); | |
1e8e9920 | 4295 | if (t == NULL) |
c2f47e15 | 4296 | t1 = null_pointer_node; |
1e8e9920 | 4297 | else |
c2f47e15 | 4298 | t1 = build_fold_addr_expr (t); |
75a70cf9 | 4299 | t2 = build_fold_addr_expr (gimple_omp_parallel_child_fn (entry_stmt)); |
773c5ba7 | 4300 | |
bc7bff74 | 4301 | vec_alloc (args, 4 + vec_safe_length (ws_args)); |
f1f41a6c | 4302 | args->quick_push (t2); |
4303 | args->quick_push (t1); | |
4304 | args->quick_push (val); | |
4305 | if (ws_args) | |
4306 | args->splice (*ws_args); | |
bc7bff74 | 4307 | args->quick_push (flags); |
414c3a2c | 4308 | |
4309 | t = build_call_expr_loc_vec (UNKNOWN_LOCATION, | |
b9a16870 | 4310 | builtin_decl_explicit (start_ix), args); |
773c5ba7 | 4311 | |
75a70cf9 | 4312 | force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, |
4313 | false, GSI_CONTINUE_LINKING); | |
1e8e9920 | 4314 | } |
4315 | ||
773c5ba7 | 4316 | |
fd6481cf | 4317 | /* Build the function call to GOMP_task to actually |
4318 | generate the task operation. BB is the block where to insert the code. */ | |
4319 | ||
4320 | static void | |
75a70cf9 | 4321 | expand_task_call (basic_block bb, gimple entry_stmt) |
fd6481cf | 4322 | { |
bc7bff74 | 4323 | tree t, t1, t2, t3, flags, cond, c, c2, clauses, depend; |
75a70cf9 | 4324 | gimple_stmt_iterator gsi; |
389dd41b | 4325 | location_t loc = gimple_location (entry_stmt); |
fd6481cf | 4326 | |
75a70cf9 | 4327 | clauses = gimple_omp_task_clauses (entry_stmt); |
fd6481cf | 4328 | |
fd6481cf | 4329 | c = find_omp_clause (clauses, OMP_CLAUSE_IF); |
4330 | if (c) | |
4331 | cond = gimple_boolify (OMP_CLAUSE_IF_EXPR (c)); | |
4332 | else | |
4333 | cond = boolean_true_node; | |
4334 | ||
4335 | c = find_omp_clause (clauses, OMP_CLAUSE_UNTIED); | |
2169f33b | 4336 | c2 = find_omp_clause (clauses, OMP_CLAUSE_MERGEABLE); |
bc7bff74 | 4337 | depend = find_omp_clause (clauses, OMP_CLAUSE_DEPEND); |
2169f33b | 4338 | flags = build_int_cst (unsigned_type_node, |
bc7bff74 | 4339 | (c ? 1 : 0) + (c2 ? 4 : 0) + (depend ? 8 : 0)); |
2169f33b | 4340 | |
4341 | c = find_omp_clause (clauses, OMP_CLAUSE_FINAL); | |
4342 | if (c) | |
4343 | { | |
4344 | c = gimple_boolify (OMP_CLAUSE_FINAL_EXPR (c)); | |
4345 | c = fold_build3_loc (loc, COND_EXPR, unsigned_type_node, c, | |
4346 | build_int_cst (unsigned_type_node, 2), | |
4347 | build_int_cst (unsigned_type_node, 0)); | |
4348 | flags = fold_build2_loc (loc, PLUS_EXPR, unsigned_type_node, flags, c); | |
4349 | } | |
bc7bff74 | 4350 | if (depend) |
4351 | depend = OMP_CLAUSE_DECL (depend); | |
4352 | else | |
4353 | depend = build_int_cst (ptr_type_node, 0); | |
fd6481cf | 4354 | |
75a70cf9 | 4355 | gsi = gsi_last_bb (bb); |
4356 | t = gimple_omp_task_data_arg (entry_stmt); | |
fd6481cf | 4357 | if (t == NULL) |
4358 | t2 = null_pointer_node; | |
4359 | else | |
389dd41b | 4360 | t2 = build_fold_addr_expr_loc (loc, t); |
4361 | t1 = build_fold_addr_expr_loc (loc, gimple_omp_task_child_fn (entry_stmt)); | |
75a70cf9 | 4362 | t = gimple_omp_task_copy_fn (entry_stmt); |
fd6481cf | 4363 | if (t == NULL) |
4364 | t3 = null_pointer_node; | |
4365 | else | |
389dd41b | 4366 | t3 = build_fold_addr_expr_loc (loc, t); |
fd6481cf | 4367 | |
b9a16870 | 4368 | t = build_call_expr (builtin_decl_explicit (BUILT_IN_GOMP_TASK), |
bc7bff74 | 4369 | 8, t1, t2, t3, |
75a70cf9 | 4370 | gimple_omp_task_arg_size (entry_stmt), |
bc7bff74 | 4371 | gimple_omp_task_arg_align (entry_stmt), cond, flags, |
4372 | depend); | |
fd6481cf | 4373 | |
75a70cf9 | 4374 | force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, |
4375 | false, GSI_CONTINUE_LINKING); | |
fd6481cf | 4376 | } |
4377 | ||
4378 | ||
75a70cf9 | 4379 | /* If exceptions are enabled, wrap the statements in BODY in a MUST_NOT_THROW |
4380 | catch handler and return it. This prevents programs from violating the | |
4381 | structured block semantics with throws. */ | |
1e8e9920 | 4382 | |
75a70cf9 | 4383 | static gimple_seq |
4384 | maybe_catch_exception (gimple_seq body) | |
1e8e9920 | 4385 | { |
e38def9c | 4386 | gimple g; |
4387 | tree decl; | |
1e8e9920 | 4388 | |
4389 | if (!flag_exceptions) | |
75a70cf9 | 4390 | return body; |
1e8e9920 | 4391 | |
596981c8 | 4392 | if (lang_hooks.eh_protect_cleanup_actions != NULL) |
4393 | decl = lang_hooks.eh_protect_cleanup_actions (); | |
1e8e9920 | 4394 | else |
b9a16870 | 4395 | decl = builtin_decl_explicit (BUILT_IN_TRAP); |
75a70cf9 | 4396 | |
e38def9c | 4397 | g = gimple_build_eh_must_not_throw (decl); |
4398 | g = gimple_build_try (body, gimple_seq_alloc_with_stmt (g), | |
75a70cf9 | 4399 | GIMPLE_TRY_CATCH); |
1e8e9920 | 4400 | |
e38def9c | 4401 | return gimple_seq_alloc_with_stmt (g); |
1e8e9920 | 4402 | } |
4403 | ||
773c5ba7 | 4404 | /* Chain all the DECLs in LIST by their TREE_CHAIN fields. */ |
1e8e9920 | 4405 | |
773c5ba7 | 4406 | static tree |
f1f41a6c | 4407 | vec2chain (vec<tree, va_gc> *v) |
1e8e9920 | 4408 | { |
2ab2ce89 | 4409 | tree chain = NULL_TREE, t; |
4410 | unsigned ix; | |
1e8e9920 | 4411 | |
f1f41a6c | 4412 | FOR_EACH_VEC_SAFE_ELT_REVERSE (v, ix, t) |
773c5ba7 | 4413 | { |
1767a056 | 4414 | DECL_CHAIN (t) = chain; |
2ab2ce89 | 4415 | chain = t; |
773c5ba7 | 4416 | } |
1e8e9920 | 4417 | |
2ab2ce89 | 4418 | return chain; |
773c5ba7 | 4419 | } |
1e8e9920 | 4420 | |
1e8e9920 | 4421 | |
773c5ba7 | 4422 | /* Remove barriers in REGION->EXIT's block. Note that this is only |
75a70cf9 | 4423 | valid for GIMPLE_OMP_PARALLEL regions. Since the end of a parallel region |
4424 | is an implicit barrier, any workshare inside the GIMPLE_OMP_PARALLEL that | |
4425 | left a barrier at the end of the GIMPLE_OMP_PARALLEL region can now be | |
773c5ba7 | 4426 | removed. */ |
1e8e9920 | 4427 | |
773c5ba7 | 4428 | static void |
4429 | remove_exit_barrier (struct omp_region *region) | |
4430 | { | |
75a70cf9 | 4431 | gimple_stmt_iterator gsi; |
773c5ba7 | 4432 | basic_block exit_bb; |
61e47ac8 | 4433 | edge_iterator ei; |
4434 | edge e; | |
75a70cf9 | 4435 | gimple stmt; |
4a04f4b4 | 4436 | int any_addressable_vars = -1; |
1e8e9920 | 4437 | |
61e47ac8 | 4438 | exit_bb = region->exit; |
1e8e9920 | 4439 | |
5056ba1a | 4440 | /* If the parallel region doesn't return, we don't have REGION->EXIT |
4441 | block at all. */ | |
4442 | if (! exit_bb) | |
4443 | return; | |
4444 | ||
75a70cf9 | 4445 | /* The last insn in the block will be the parallel's GIMPLE_OMP_RETURN. The |
4446 | workshare's GIMPLE_OMP_RETURN will be in a preceding block. The kinds of | |
61e47ac8 | 4447 | statements that can appear in between are extremely limited -- no |
4448 | memory operations at all. Here, we allow nothing at all, so the | |
75a70cf9 | 4449 | only thing we allow to precede this GIMPLE_OMP_RETURN is a label. */ |
4450 | gsi = gsi_last_bb (exit_bb); | |
4451 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_RETURN); | |
4452 | gsi_prev (&gsi); | |
4453 | if (!gsi_end_p (gsi) && gimple_code (gsi_stmt (gsi)) != GIMPLE_LABEL) | |
773c5ba7 | 4454 | return; |
1e8e9920 | 4455 | |
61e47ac8 | 4456 | FOR_EACH_EDGE (e, ei, exit_bb->preds) |
4457 | { | |
75a70cf9 | 4458 | gsi = gsi_last_bb (e->src); |
4459 | if (gsi_end_p (gsi)) | |
61e47ac8 | 4460 | continue; |
75a70cf9 | 4461 | stmt = gsi_stmt (gsi); |
4a04f4b4 | 4462 | if (gimple_code (stmt) == GIMPLE_OMP_RETURN |
4463 | && !gimple_omp_return_nowait_p (stmt)) | |
4464 | { | |
4465 | /* OpenMP 3.0 tasks unfortunately prevent this optimization | |
4466 | in many cases. If there could be tasks queued, the barrier | |
4467 | might be needed to let the tasks run before some local | |
4468 | variable of the parallel that the task uses as shared | |
4469 | runs out of scope. The task can be spawned either | |
4470 | from within current function (this would be easy to check) | |
4471 | or from some function it calls and gets passed an address | |
4472 | of such a variable. */ | |
4473 | if (any_addressable_vars < 0) | |
4474 | { | |
4475 | gimple parallel_stmt = last_stmt (region->entry); | |
4476 | tree child_fun = gimple_omp_parallel_child_fn (parallel_stmt); | |
2ab2ce89 | 4477 | tree local_decls, block, decl; |
4478 | unsigned ix; | |
4a04f4b4 | 4479 | |
4480 | any_addressable_vars = 0; | |
2ab2ce89 | 4481 | FOR_EACH_LOCAL_DECL (DECL_STRUCT_FUNCTION (child_fun), ix, decl) |
4482 | if (TREE_ADDRESSABLE (decl)) | |
4a04f4b4 | 4483 | { |
4484 | any_addressable_vars = 1; | |
4485 | break; | |
4486 | } | |
4487 | for (block = gimple_block (stmt); | |
4488 | !any_addressable_vars | |
4489 | && block | |
4490 | && TREE_CODE (block) == BLOCK; | |
4491 | block = BLOCK_SUPERCONTEXT (block)) | |
4492 | { | |
4493 | for (local_decls = BLOCK_VARS (block); | |
4494 | local_decls; | |
1767a056 | 4495 | local_decls = DECL_CHAIN (local_decls)) |
4a04f4b4 | 4496 | if (TREE_ADDRESSABLE (local_decls)) |
4497 | { | |
4498 | any_addressable_vars = 1; | |
4499 | break; | |
4500 | } | |
4501 | if (block == gimple_block (parallel_stmt)) | |
4502 | break; | |
4503 | } | |
4504 | } | |
4505 | if (!any_addressable_vars) | |
4506 | gimple_omp_return_set_nowait (stmt); | |
4507 | } | |
61e47ac8 | 4508 | } |
1e8e9920 | 4509 | } |
4510 | ||
61e47ac8 | 4511 | static void |
4512 | remove_exit_barriers (struct omp_region *region) | |
4513 | { | |
75a70cf9 | 4514 | if (region->type == GIMPLE_OMP_PARALLEL) |
61e47ac8 | 4515 | remove_exit_barrier (region); |
4516 | ||
4517 | if (region->inner) | |
4518 | { | |
4519 | region = region->inner; | |
4520 | remove_exit_barriers (region); | |
4521 | while (region->next) | |
4522 | { | |
4523 | region = region->next; | |
4524 | remove_exit_barriers (region); | |
4525 | } | |
4526 | } | |
4527 | } | |
773c5ba7 | 4528 | |
658b4427 | 4529 | /* Optimize omp_get_thread_num () and omp_get_num_threads () |
4530 | calls. These can't be declared as const functions, but | |
4531 | within one parallel body they are constant, so they can be | |
4532 | transformed there into __builtin_omp_get_{thread_num,num_threads} () | |
fd6481cf | 4533 | which are declared const. Similarly for task body, except |
4534 | that in untied task omp_get_thread_num () can change at any task | |
4535 | scheduling point. */ | |
658b4427 | 4536 | |
4537 | static void | |
75a70cf9 | 4538 | optimize_omp_library_calls (gimple entry_stmt) |
658b4427 | 4539 | { |
4540 | basic_block bb; | |
75a70cf9 | 4541 | gimple_stmt_iterator gsi; |
b9a16870 | 4542 | tree thr_num_tree = builtin_decl_explicit (BUILT_IN_OMP_GET_THREAD_NUM); |
4543 | tree thr_num_id = DECL_ASSEMBLER_NAME (thr_num_tree); | |
4544 | tree num_thr_tree = builtin_decl_explicit (BUILT_IN_OMP_GET_NUM_THREADS); | |
4545 | tree num_thr_id = DECL_ASSEMBLER_NAME (num_thr_tree); | |
75a70cf9 | 4546 | bool untied_task = (gimple_code (entry_stmt) == GIMPLE_OMP_TASK |
4547 | && find_omp_clause (gimple_omp_task_clauses (entry_stmt), | |
fd6481cf | 4548 | OMP_CLAUSE_UNTIED) != NULL); |
658b4427 | 4549 | |
fc00614f | 4550 | FOR_EACH_BB_FN (bb, cfun) |
75a70cf9 | 4551 | for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi)) |
658b4427 | 4552 | { |
75a70cf9 | 4553 | gimple call = gsi_stmt (gsi); |
658b4427 | 4554 | tree decl; |
4555 | ||
75a70cf9 | 4556 | if (is_gimple_call (call) |
4557 | && (decl = gimple_call_fndecl (call)) | |
658b4427 | 4558 | && DECL_EXTERNAL (decl) |
4559 | && TREE_PUBLIC (decl) | |
4560 | && DECL_INITIAL (decl) == NULL) | |
4561 | { | |
4562 | tree built_in; | |
4563 | ||
4564 | if (DECL_NAME (decl) == thr_num_id) | |
fd6481cf | 4565 | { |
4566 | /* In #pragma omp task untied omp_get_thread_num () can change | |
4567 | during the execution of the task region. */ | |
4568 | if (untied_task) | |
4569 | continue; | |
b9a16870 | 4570 | built_in = builtin_decl_explicit (BUILT_IN_OMP_GET_THREAD_NUM); |
fd6481cf | 4571 | } |
658b4427 | 4572 | else if (DECL_NAME (decl) == num_thr_id) |
b9a16870 | 4573 | built_in = builtin_decl_explicit (BUILT_IN_OMP_GET_NUM_THREADS); |
658b4427 | 4574 | else |
4575 | continue; | |
4576 | ||
4577 | if (DECL_ASSEMBLER_NAME (decl) != DECL_ASSEMBLER_NAME (built_in) | |
75a70cf9 | 4578 | || gimple_call_num_args (call) != 0) |
658b4427 | 4579 | continue; |
4580 | ||
4581 | if (flag_exceptions && !TREE_NOTHROW (decl)) | |
4582 | continue; | |
4583 | ||
4584 | if (TREE_CODE (TREE_TYPE (decl)) != FUNCTION_TYPE | |
1ea6a73c | 4585 | || !types_compatible_p (TREE_TYPE (TREE_TYPE (decl)), |
4586 | TREE_TYPE (TREE_TYPE (built_in)))) | |
658b4427 | 4587 | continue; |
4588 | ||
0acacf9e | 4589 | gimple_call_set_fndecl (call, built_in); |
658b4427 | 4590 | } |
4591 | } | |
4592 | } | |
4593 | ||
8e6b4515 | 4594 | /* Callback for expand_omp_build_assign. Return non-NULL if *tp needs to be |
4595 | regimplified. */ | |
4596 | ||
4597 | static tree | |
4598 | expand_omp_regimplify_p (tree *tp, int *walk_subtrees, void *) | |
4599 | { | |
4600 | tree t = *tp; | |
4601 | ||
4602 | /* Any variable with DECL_VALUE_EXPR needs to be regimplified. */ | |
4603 | if (TREE_CODE (t) == VAR_DECL && DECL_HAS_VALUE_EXPR_P (t)) | |
4604 | return t; | |
4605 | ||
4606 | if (TREE_CODE (t) == ADDR_EXPR) | |
4607 | recompute_tree_invariant_for_addr_expr (t); | |
4608 | ||
4609 | *walk_subtrees = !TYPE_P (t) && !DECL_P (t); | |
4610 | return NULL_TREE; | |
4611 | } | |
4612 | ||
3d483a94 | 4613 | /* Prepend TO = FROM assignment before *GSI_P. */ |
4614 | ||
4615 | static void | |
4616 | expand_omp_build_assign (gimple_stmt_iterator *gsi_p, tree to, tree from) | |
4617 | { | |
4618 | bool simple_p = DECL_P (to) && TREE_ADDRESSABLE (to); | |
4619 | from = force_gimple_operand_gsi (gsi_p, from, simple_p, NULL_TREE, | |
4620 | true, GSI_SAME_STMT); | |
4621 | gimple stmt = gimple_build_assign (to, from); | |
4622 | gsi_insert_before (gsi_p, stmt, GSI_SAME_STMT); | |
4623 | if (walk_tree (&from, expand_omp_regimplify_p, NULL, NULL) | |
4624 | || walk_tree (&to, expand_omp_regimplify_p, NULL, NULL)) | |
4625 | { | |
4626 | gimple_stmt_iterator gsi = gsi_for_stmt (stmt); | |
4627 | gimple_regimplify_operands (stmt, &gsi); | |
4628 | } | |
4629 | } | |
4630 | ||
fd6481cf | 4631 | /* Expand the OpenMP parallel or task directive starting at REGION. */ |
1e8e9920 | 4632 | |
4633 | static void | |
fd6481cf | 4634 | expand_omp_taskreg (struct omp_region *region) |
1e8e9920 | 4635 | { |
773c5ba7 | 4636 | basic_block entry_bb, exit_bb, new_bb; |
87d4aa85 | 4637 | struct function *child_cfun; |
414c3a2c | 4638 | tree child_fn, block, t; |
75a70cf9 | 4639 | gimple_stmt_iterator gsi; |
4640 | gimple entry_stmt, stmt; | |
773c5ba7 | 4641 | edge e; |
f1f41a6c | 4642 | vec<tree, va_gc> *ws_args; |
773c5ba7 | 4643 | |
61e47ac8 | 4644 | entry_stmt = last_stmt (region->entry); |
75a70cf9 | 4645 | child_fn = gimple_omp_taskreg_child_fn (entry_stmt); |
773c5ba7 | 4646 | child_cfun = DECL_STRUCT_FUNCTION (child_fn); |
773c5ba7 | 4647 | |
61e47ac8 | 4648 | entry_bb = region->entry; |
4649 | exit_bb = region->exit; | |
773c5ba7 | 4650 | |
773c5ba7 | 4651 | if (is_combined_parallel (region)) |
61e47ac8 | 4652 | ws_args = region->ws_args; |
773c5ba7 | 4653 | else |
414c3a2c | 4654 | ws_args = NULL; |
1e8e9920 | 4655 | |
61e47ac8 | 4656 | if (child_cfun->cfg) |
1e8e9920 | 4657 | { |
773c5ba7 | 4658 | /* Due to inlining, it may happen that we have already outlined |
4659 | the region, in which case all we need to do is make the | |
4660 | sub-graph unreachable and emit the parallel call. */ | |
4661 | edge entry_succ_e, exit_succ_e; | |
75a70cf9 | 4662 | gimple_stmt_iterator gsi; |
773c5ba7 | 4663 | |
4664 | entry_succ_e = single_succ_edge (entry_bb); | |
773c5ba7 | 4665 | |
75a70cf9 | 4666 | gsi = gsi_last_bb (entry_bb); |
4667 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_PARALLEL | |
4668 | || gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_TASK); | |
4669 | gsi_remove (&gsi, true); | |
773c5ba7 | 4670 | |
4671 | new_bb = entry_bb; | |
03ed154b | 4672 | if (exit_bb) |
4673 | { | |
4674 | exit_succ_e = single_succ_edge (exit_bb); | |
4675 | make_edge (new_bb, exit_succ_e->dest, EDGE_FALLTHRU); | |
4676 | } | |
79acaae1 | 4677 | remove_edge_and_dominated_blocks (entry_succ_e); |
1e8e9920 | 4678 | } |
773c5ba7 | 4679 | else |
4680 | { | |
501bdd19 | 4681 | unsigned srcidx, dstidx, num; |
2ab2ce89 | 4682 | |
773c5ba7 | 4683 | /* If the parallel region needs data sent from the parent |
3480139d | 4684 | function, then the very first statement (except possible |
4685 | tree profile counter updates) of the parallel body | |
773c5ba7 | 4686 | is a copy assignment .OMP_DATA_I = &.OMP_DATA_O. Since |
4687 | &.OMP_DATA_O is passed as an argument to the child function, | |
4688 | we need to replace it with the argument as seen by the child | |
4689 | function. | |
4690 | ||
4691 | In most cases, this will end up being the identity assignment | |
4692 | .OMP_DATA_I = .OMP_DATA_I. However, if the parallel body had | |
4693 | a function call that has been inlined, the original PARM_DECL | |
4694 | .OMP_DATA_I may have been converted into a different local | |
4695 | variable. In which case, we need to keep the assignment. */ | |
75a70cf9 | 4696 | if (gimple_omp_taskreg_data_arg (entry_stmt)) |
773c5ba7 | 4697 | { |
4698 | basic_block entry_succ_bb = single_succ (entry_bb); | |
75a70cf9 | 4699 | gimple_stmt_iterator gsi; |
4700 | tree arg, narg; | |
4701 | gimple parcopy_stmt = NULL; | |
1e8e9920 | 4702 | |
75a70cf9 | 4703 | for (gsi = gsi_start_bb (entry_succ_bb); ; gsi_next (&gsi)) |
3480139d | 4704 | { |
75a70cf9 | 4705 | gimple stmt; |
3480139d | 4706 | |
75a70cf9 | 4707 | gcc_assert (!gsi_end_p (gsi)); |
4708 | stmt = gsi_stmt (gsi); | |
4709 | if (gimple_code (stmt) != GIMPLE_ASSIGN) | |
cc6b725b | 4710 | continue; |
4711 | ||
75a70cf9 | 4712 | if (gimple_num_ops (stmt) == 2) |
3480139d | 4713 | { |
75a70cf9 | 4714 | tree arg = gimple_assign_rhs1 (stmt); |
4715 | ||
4716 | /* We're ignore the subcode because we're | |
4717 | effectively doing a STRIP_NOPS. */ | |
4718 | ||
4719 | if (TREE_CODE (arg) == ADDR_EXPR | |
4720 | && TREE_OPERAND (arg, 0) | |
4721 | == gimple_omp_taskreg_data_arg (entry_stmt)) | |
4722 | { | |
4723 | parcopy_stmt = stmt; | |
4724 | break; | |
4725 | } | |
3480139d | 4726 | } |
4727 | } | |
79acaae1 | 4728 | |
75a70cf9 | 4729 | gcc_assert (parcopy_stmt != NULL); |
79acaae1 | 4730 | arg = DECL_ARGUMENTS (child_fn); |
4731 | ||
4732 | if (!gimple_in_ssa_p (cfun)) | |
4733 | { | |
75a70cf9 | 4734 | if (gimple_assign_lhs (parcopy_stmt) == arg) |
4735 | gsi_remove (&gsi, true); | |
79acaae1 | 4736 | else |
75a70cf9 | 4737 | { |
4738 | /* ?? Is setting the subcode really necessary ?? */ | |
4739 | gimple_omp_set_subcode (parcopy_stmt, TREE_CODE (arg)); | |
4740 | gimple_assign_set_rhs1 (parcopy_stmt, arg); | |
4741 | } | |
79acaae1 | 4742 | } |
4743 | else | |
4744 | { | |
4745 | /* If we are in ssa form, we must load the value from the default | |
4746 | definition of the argument. That should not be defined now, | |
4747 | since the argument is not used uninitialized. */ | |
c6dfe037 | 4748 | gcc_assert (ssa_default_def (cfun, arg) == NULL); |
75a70cf9 | 4749 | narg = make_ssa_name (arg, gimple_build_nop ()); |
c6dfe037 | 4750 | set_ssa_default_def (cfun, arg, narg); |
75a70cf9 | 4751 | /* ?? Is setting the subcode really necessary ?? */ |
4752 | gimple_omp_set_subcode (parcopy_stmt, TREE_CODE (narg)); | |
4753 | gimple_assign_set_rhs1 (parcopy_stmt, narg); | |
79acaae1 | 4754 | update_stmt (parcopy_stmt); |
4755 | } | |
773c5ba7 | 4756 | } |
4757 | ||
4758 | /* Declare local variables needed in CHILD_CFUN. */ | |
4759 | block = DECL_INITIAL (child_fn); | |
2ab2ce89 | 4760 | BLOCK_VARS (block) = vec2chain (child_cfun->local_decls); |
e1a7ccb9 | 4761 | /* The gimplifier could record temporaries in parallel/task block |
4762 | rather than in containing function's local_decls chain, | |
4763 | which would mean cgraph missed finalizing them. Do it now. */ | |
1767a056 | 4764 | for (t = BLOCK_VARS (block); t; t = DECL_CHAIN (t)) |
e1a7ccb9 | 4765 | if (TREE_CODE (t) == VAR_DECL |
4766 | && TREE_STATIC (t) | |
4767 | && !DECL_EXTERNAL (t)) | |
4768 | varpool_finalize_decl (t); | |
75a70cf9 | 4769 | DECL_SAVED_TREE (child_fn) = NULL; |
e3a19533 | 4770 | /* We'll create a CFG for child_fn, so no gimple body is needed. */ |
4771 | gimple_set_body (child_fn, NULL); | |
1d22f541 | 4772 | TREE_USED (block) = 1; |
773c5ba7 | 4773 | |
79acaae1 | 4774 | /* Reset DECL_CONTEXT on function arguments. */ |
1767a056 | 4775 | for (t = DECL_ARGUMENTS (child_fn); t; t = DECL_CHAIN (t)) |
773c5ba7 | 4776 | DECL_CONTEXT (t) = child_fn; |
4777 | ||
75a70cf9 | 4778 | /* Split ENTRY_BB at GIMPLE_OMP_PARALLEL or GIMPLE_OMP_TASK, |
4779 | so that it can be moved to the child function. */ | |
4780 | gsi = gsi_last_bb (entry_bb); | |
4781 | stmt = gsi_stmt (gsi); | |
4782 | gcc_assert (stmt && (gimple_code (stmt) == GIMPLE_OMP_PARALLEL | |
4783 | || gimple_code (stmt) == GIMPLE_OMP_TASK)); | |
4784 | gsi_remove (&gsi, true); | |
4785 | e = split_block (entry_bb, stmt); | |
773c5ba7 | 4786 | entry_bb = e->dest; |
4787 | single_succ_edge (entry_bb)->flags = EDGE_FALLTHRU; | |
4788 | ||
75a70cf9 | 4789 | /* Convert GIMPLE_OMP_RETURN into a RETURN_EXPR. */ |
5056ba1a | 4790 | if (exit_bb) |
4791 | { | |
75a70cf9 | 4792 | gsi = gsi_last_bb (exit_bb); |
4793 | gcc_assert (!gsi_end_p (gsi) | |
4794 | && gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_RETURN); | |
4795 | stmt = gimple_build_return (NULL); | |
4796 | gsi_insert_after (&gsi, stmt, GSI_SAME_STMT); | |
4797 | gsi_remove (&gsi, true); | |
5056ba1a | 4798 | } |
79acaae1 | 4799 | |
4800 | /* Move the parallel region into CHILD_CFUN. */ | |
48e1416a | 4801 | |
79acaae1 | 4802 | if (gimple_in_ssa_p (cfun)) |
4803 | { | |
bcaa2770 | 4804 | init_tree_ssa (child_cfun); |
5084b2e4 | 4805 | init_ssa_operands (child_cfun); |
4806 | child_cfun->gimple_df->in_ssa_p = true; | |
1d22f541 | 4807 | block = NULL_TREE; |
79acaae1 | 4808 | } |
1d22f541 | 4809 | else |
75a70cf9 | 4810 | block = gimple_block (entry_stmt); |
1d22f541 | 4811 | |
4812 | new_bb = move_sese_region_to_fn (child_cfun, entry_bb, exit_bb, block); | |
79acaae1 | 4813 | if (exit_bb) |
4814 | single_succ_edge (new_bb)->flags = EDGE_FALLTHRU; | |
04c2922b | 4815 | /* When the OMP expansion process cannot guarantee an up-to-date |
4816 | loop tree arrange for the child function to fixup loops. */ | |
4817 | if (loops_state_satisfies_p (LOOPS_NEED_FIXUP)) | |
4818 | child_cfun->x_current_loops->state |= LOOPS_NEED_FIXUP; | |
79acaae1 | 4819 | |
1d22f541 | 4820 | /* Remove non-local VAR_DECLs from child_cfun->local_decls list. */ |
f1f41a6c | 4821 | num = vec_safe_length (child_cfun->local_decls); |
501bdd19 | 4822 | for (srcidx = 0, dstidx = 0; srcidx < num; srcidx++) |
4823 | { | |
f1f41a6c | 4824 | t = (*child_cfun->local_decls)[srcidx]; |
501bdd19 | 4825 | if (DECL_CONTEXT (t) == cfun->decl) |
4826 | continue; | |
4827 | if (srcidx != dstidx) | |
f1f41a6c | 4828 | (*child_cfun->local_decls)[dstidx] = t; |
501bdd19 | 4829 | dstidx++; |
4830 | } | |
4831 | if (dstidx != num) | |
f1f41a6c | 4832 | vec_safe_truncate (child_cfun->local_decls, dstidx); |
1d22f541 | 4833 | |
79acaae1 | 4834 | /* Inform the callgraph about the new function. */ |
82b40354 | 4835 | DECL_STRUCT_FUNCTION (child_fn)->curr_properties = cfun->curr_properties; |
79acaae1 | 4836 | cgraph_add_new_function (child_fn, true); |
4837 | ||
4838 | /* Fix the callgraph edges for child_cfun. Those for cfun will be | |
4839 | fixed in a following pass. */ | |
4840 | push_cfun (child_cfun); | |
658b4427 | 4841 | if (optimize) |
fd6481cf | 4842 | optimize_omp_library_calls (entry_stmt); |
79acaae1 | 4843 | rebuild_cgraph_edges (); |
fbe86b1b | 4844 | |
4845 | /* Some EH regions might become dead, see PR34608. If | |
4846 | pass_cleanup_cfg isn't the first pass to happen with the | |
4847 | new child, these dead EH edges might cause problems. | |
4848 | Clean them up now. */ | |
4849 | if (flag_exceptions) | |
4850 | { | |
4851 | basic_block bb; | |
fbe86b1b | 4852 | bool changed = false; |
4853 | ||
fc00614f | 4854 | FOR_EACH_BB_FN (bb, cfun) |
75a70cf9 | 4855 | changed |= gimple_purge_dead_eh_edges (bb); |
fbe86b1b | 4856 | if (changed) |
4857 | cleanup_tree_cfg (); | |
fbe86b1b | 4858 | } |
dd277d48 | 4859 | if (gimple_in_ssa_p (cfun)) |
4860 | update_ssa (TODO_update_ssa); | |
79acaae1 | 4861 | pop_cfun (); |
773c5ba7 | 4862 | } |
48e1416a | 4863 | |
773c5ba7 | 4864 | /* Emit a library call to launch the children threads. */ |
75a70cf9 | 4865 | if (gimple_code (entry_stmt) == GIMPLE_OMP_PARALLEL) |
fd6481cf | 4866 | expand_parallel_call (region, new_bb, entry_stmt, ws_args); |
4867 | else | |
4868 | expand_task_call (new_bb, entry_stmt); | |
083152fb | 4869 | if (gimple_in_ssa_p (cfun)) |
4870 | update_ssa (TODO_update_ssa_only_virtuals); | |
1e8e9920 | 4871 | } |
4872 | ||
773c5ba7 | 4873 | |
3d483a94 | 4874 | /* Helper function for expand_omp_{for_*,simd}. If this is the outermost |
4875 | of the combined collapse > 1 loop constructs, generate code like: | |
4876 | if (__builtin_expect (N32 cond3 N31, 0)) goto ZERO_ITER_BB; | |
4877 | if (cond3 is <) | |
4878 | adj = STEP3 - 1; | |
4879 | else | |
4880 | adj = STEP3 + 1; | |
4881 | count3 = (adj + N32 - N31) / STEP3; | |
4882 | if (__builtin_expect (N22 cond2 N21, 0)) goto ZERO_ITER_BB; | |
4883 | if (cond2 is <) | |
4884 | adj = STEP2 - 1; | |
4885 | else | |
4886 | adj = STEP2 + 1; | |
4887 | count2 = (adj + N22 - N21) / STEP2; | |
4888 | if (__builtin_expect (N12 cond1 N11, 0)) goto ZERO_ITER_BB; | |
4889 | if (cond1 is <) | |
4890 | adj = STEP1 - 1; | |
4891 | else | |
4892 | adj = STEP1 + 1; | |
4893 | count1 = (adj + N12 - N11) / STEP1; | |
4894 | count = count1 * count2 * count3; | |
4895 | Furthermore, if ZERO_ITER_BB is NULL, create a BB which does: | |
4896 | count = 0; | |
bc7bff74 | 4897 | and set ZERO_ITER_BB to that bb. If this isn't the outermost |
4898 | of the combined loop constructs, just initialize COUNTS array | |
4899 | from the _looptemp_ clauses. */ | |
3d483a94 | 4900 | |
4901 | /* NOTE: It *could* be better to moosh all of the BBs together, | |
4902 | creating one larger BB with all the computation and the unexpected | |
4903 | jump at the end. I.e. | |
4904 | ||
4905 | bool zero3, zero2, zero1, zero; | |
4906 | ||
4907 | zero3 = N32 c3 N31; | |
4908 | count3 = (N32 - N31) /[cl] STEP3; | |
4909 | zero2 = N22 c2 N21; | |
4910 | count2 = (N22 - N21) /[cl] STEP2; | |
4911 | zero1 = N12 c1 N11; | |
4912 | count1 = (N12 - N11) /[cl] STEP1; | |
4913 | zero = zero3 || zero2 || zero1; | |
4914 | count = count1 * count2 * count3; | |
4915 | if (__builtin_expect(zero, false)) goto zero_iter_bb; | |
4916 | ||
4917 | After all, we expect the zero=false, and thus we expect to have to | |
4918 | evaluate all of the comparison expressions, so short-circuiting | |
4919 | oughtn't be a win. Since the condition isn't protecting a | |
4920 | denominator, we're not concerned about divide-by-zero, so we can | |
4921 | fully evaluate count even if a numerator turned out to be wrong. | |
4922 | ||
4923 | It seems like putting this all together would create much better | |
4924 | scheduling opportunities, and less pressure on the chip's branch | |
4925 | predictor. */ | |
4926 | ||
4927 | static void | |
4928 | expand_omp_for_init_counts (struct omp_for_data *fd, gimple_stmt_iterator *gsi, | |
4929 | basic_block &entry_bb, tree *counts, | |
4930 | basic_block &zero_iter_bb, int &first_zero_iter, | |
4931 | basic_block &l2_dom_bb) | |
4932 | { | |
4933 | tree t, type = TREE_TYPE (fd->loop.v); | |
4934 | gimple stmt; | |
4935 | edge e, ne; | |
4936 | int i; | |
4937 | ||
4938 | /* Collapsed loops need work for expansion into SSA form. */ | |
4939 | gcc_assert (!gimple_in_ssa_p (cfun)); | |
4940 | ||
bc7bff74 | 4941 | if (gimple_omp_for_combined_into_p (fd->for_stmt) |
4942 | && TREE_CODE (fd->loop.n2) != INTEGER_CST) | |
4943 | { | |
4944 | /* First two _looptemp_ clauses are for istart/iend, counts[0] | |
4945 | isn't supposed to be handled, as the inner loop doesn't | |
4946 | use it. */ | |
4947 | tree innerc = find_omp_clause (gimple_omp_for_clauses (fd->for_stmt), | |
4948 | OMP_CLAUSE__LOOPTEMP_); | |
4949 | gcc_assert (innerc); | |
4950 | for (i = 0; i < fd->collapse; i++) | |
4951 | { | |
4952 | innerc = find_omp_clause (OMP_CLAUSE_CHAIN (innerc), | |
4953 | OMP_CLAUSE__LOOPTEMP_); | |
4954 | gcc_assert (innerc); | |
4955 | if (i) | |
4956 | counts[i] = OMP_CLAUSE_DECL (innerc); | |
4957 | else | |
4958 | counts[0] = NULL_TREE; | |
4959 | } | |
4960 | return; | |
4961 | } | |
4962 | ||
3d483a94 | 4963 | for (i = 0; i < fd->collapse; i++) |
4964 | { | |
4965 | tree itype = TREE_TYPE (fd->loops[i].v); | |
4966 | ||
4967 | if (SSA_VAR_P (fd->loop.n2) | |
4968 | && ((t = fold_binary (fd->loops[i].cond_code, boolean_type_node, | |
4969 | fold_convert (itype, fd->loops[i].n1), | |
4970 | fold_convert (itype, fd->loops[i].n2))) | |
4971 | == NULL_TREE || !integer_onep (t))) | |
4972 | { | |
4973 | tree n1, n2; | |
4974 | n1 = fold_convert (itype, unshare_expr (fd->loops[i].n1)); | |
4975 | n1 = force_gimple_operand_gsi (gsi, n1, true, NULL_TREE, | |
4976 | true, GSI_SAME_STMT); | |
4977 | n2 = fold_convert (itype, unshare_expr (fd->loops[i].n2)); | |
4978 | n2 = force_gimple_operand_gsi (gsi, n2, true, NULL_TREE, | |
4979 | true, GSI_SAME_STMT); | |
4980 | stmt = gimple_build_cond (fd->loops[i].cond_code, n1, n2, | |
4981 | NULL_TREE, NULL_TREE); | |
4982 | gsi_insert_before (gsi, stmt, GSI_SAME_STMT); | |
4983 | if (walk_tree (gimple_cond_lhs_ptr (stmt), | |
4984 | expand_omp_regimplify_p, NULL, NULL) | |
4985 | || walk_tree (gimple_cond_rhs_ptr (stmt), | |
4986 | expand_omp_regimplify_p, NULL, NULL)) | |
4987 | { | |
4988 | *gsi = gsi_for_stmt (stmt); | |
4989 | gimple_regimplify_operands (stmt, gsi); | |
4990 | } | |
4991 | e = split_block (entry_bb, stmt); | |
4992 | if (zero_iter_bb == NULL) | |
4993 | { | |
4994 | first_zero_iter = i; | |
4995 | zero_iter_bb = create_empty_bb (entry_bb); | |
4996 | if (current_loops) | |
4997 | add_bb_to_loop (zero_iter_bb, entry_bb->loop_father); | |
4998 | *gsi = gsi_after_labels (zero_iter_bb); | |
4999 | stmt = gimple_build_assign (fd->loop.n2, | |
5000 | build_zero_cst (type)); | |
5001 | gsi_insert_before (gsi, stmt, GSI_SAME_STMT); | |
5002 | set_immediate_dominator (CDI_DOMINATORS, zero_iter_bb, | |
5003 | entry_bb); | |
5004 | } | |
5005 | ne = make_edge (entry_bb, zero_iter_bb, EDGE_FALSE_VALUE); | |
5006 | ne->probability = REG_BR_PROB_BASE / 2000 - 1; | |
5007 | e->flags = EDGE_TRUE_VALUE; | |
5008 | e->probability = REG_BR_PROB_BASE - ne->probability; | |
5009 | if (l2_dom_bb == NULL) | |
5010 | l2_dom_bb = entry_bb; | |
5011 | entry_bb = e->dest; | |
5012 | *gsi = gsi_last_bb (entry_bb); | |
5013 | } | |
5014 | ||
5015 | if (POINTER_TYPE_P (itype)) | |
5016 | itype = signed_type_for (itype); | |
5017 | t = build_int_cst (itype, (fd->loops[i].cond_code == LT_EXPR | |
5018 | ? -1 : 1)); | |
5019 | t = fold_build2 (PLUS_EXPR, itype, | |
5020 | fold_convert (itype, fd->loops[i].step), t); | |
5021 | t = fold_build2 (PLUS_EXPR, itype, t, | |
5022 | fold_convert (itype, fd->loops[i].n2)); | |
5023 | t = fold_build2 (MINUS_EXPR, itype, t, | |
5024 | fold_convert (itype, fd->loops[i].n1)); | |
5025 | /* ?? We could probably use CEIL_DIV_EXPR instead of | |
5026 | TRUNC_DIV_EXPR and adjusting by hand. Unless we can't | |
5027 | generate the same code in the end because generically we | |
5028 | don't know that the values involved must be negative for | |
5029 | GT?? */ | |
5030 | if (TYPE_UNSIGNED (itype) && fd->loops[i].cond_code == GT_EXPR) | |
5031 | t = fold_build2 (TRUNC_DIV_EXPR, itype, | |
5032 | fold_build1 (NEGATE_EXPR, itype, t), | |
5033 | fold_build1 (NEGATE_EXPR, itype, | |
5034 | fold_convert (itype, | |
5035 | fd->loops[i].step))); | |
5036 | else | |
5037 | t = fold_build2 (TRUNC_DIV_EXPR, itype, t, | |
5038 | fold_convert (itype, fd->loops[i].step)); | |
5039 | t = fold_convert (type, t); | |
5040 | if (TREE_CODE (t) == INTEGER_CST) | |
5041 | counts[i] = t; | |
5042 | else | |
5043 | { | |
5044 | counts[i] = create_tmp_reg (type, ".count"); | |
5045 | expand_omp_build_assign (gsi, counts[i], t); | |
5046 | } | |
5047 | if (SSA_VAR_P (fd->loop.n2)) | |
5048 | { | |
5049 | if (i == 0) | |
5050 | t = counts[0]; | |
5051 | else | |
5052 | t = fold_build2 (MULT_EXPR, type, fd->loop.n2, counts[i]); | |
5053 | expand_omp_build_assign (gsi, fd->loop.n2, t); | |
5054 | } | |
5055 | } | |
5056 | } | |
5057 | ||
5058 | ||
5059 | /* Helper function for expand_omp_{for_*,simd}. Generate code like: | |
5060 | T = V; | |
5061 | V3 = N31 + (T % count3) * STEP3; | |
5062 | T = T / count3; | |
5063 | V2 = N21 + (T % count2) * STEP2; | |
5064 | T = T / count2; | |
5065 | V1 = N11 + T * STEP1; | |
bc7bff74 | 5066 | if this loop doesn't have an inner loop construct combined with it. |
5067 | If it does have an inner loop construct combined with it and the | |
5068 | iteration count isn't known constant, store values from counts array | |
5069 | into its _looptemp_ temporaries instead. */ | |
3d483a94 | 5070 | |
5071 | static void | |
5072 | expand_omp_for_init_vars (struct omp_for_data *fd, gimple_stmt_iterator *gsi, | |
bc7bff74 | 5073 | tree *counts, gimple inner_stmt, tree startvar) |
3d483a94 | 5074 | { |
5075 | int i; | |
bc7bff74 | 5076 | if (gimple_omp_for_combined_p (fd->for_stmt)) |
5077 | { | |
5078 | /* If fd->loop.n2 is constant, then no propagation of the counts | |
5079 | is needed, they are constant. */ | |
5080 | if (TREE_CODE (fd->loop.n2) == INTEGER_CST) | |
5081 | return; | |
5082 | ||
5083 | tree clauses = gimple_code (inner_stmt) == GIMPLE_OMP_PARALLEL | |
5084 | ? gimple_omp_parallel_clauses (inner_stmt) | |
5085 | : gimple_omp_for_clauses (inner_stmt); | |
5086 | /* First two _looptemp_ clauses are for istart/iend, counts[0] | |
5087 | isn't supposed to be handled, as the inner loop doesn't | |
5088 | use it. */ | |
5089 | tree innerc = find_omp_clause (clauses, OMP_CLAUSE__LOOPTEMP_); | |
5090 | gcc_assert (innerc); | |
5091 | for (i = 0; i < fd->collapse; i++) | |
5092 | { | |
5093 | innerc = find_omp_clause (OMP_CLAUSE_CHAIN (innerc), | |
5094 | OMP_CLAUSE__LOOPTEMP_); | |
5095 | gcc_assert (innerc); | |
5096 | if (i) | |
5097 | { | |
5098 | tree tem = OMP_CLAUSE_DECL (innerc); | |
5099 | tree t = fold_convert (TREE_TYPE (tem), counts[i]); | |
5100 | t = force_gimple_operand_gsi (gsi, t, false, NULL_TREE, | |
5101 | false, GSI_CONTINUE_LINKING); | |
5102 | gimple stmt = gimple_build_assign (tem, t); | |
5103 | gsi_insert_after (gsi, stmt, GSI_CONTINUE_LINKING); | |
5104 | } | |
5105 | } | |
5106 | return; | |
5107 | } | |
5108 | ||
3d483a94 | 5109 | tree type = TREE_TYPE (fd->loop.v); |
5110 | tree tem = create_tmp_reg (type, ".tem"); | |
5111 | gimple stmt = gimple_build_assign (tem, startvar); | |
5112 | gsi_insert_after (gsi, stmt, GSI_CONTINUE_LINKING); | |
5113 | ||
5114 | for (i = fd->collapse - 1; i >= 0; i--) | |
5115 | { | |
5116 | tree vtype = TREE_TYPE (fd->loops[i].v), itype, t; | |
5117 | itype = vtype; | |
5118 | if (POINTER_TYPE_P (vtype)) | |
5119 | itype = signed_type_for (vtype); | |
5120 | if (i != 0) | |
5121 | t = fold_build2 (TRUNC_MOD_EXPR, type, tem, counts[i]); | |
5122 | else | |
5123 | t = tem; | |
5124 | t = fold_convert (itype, t); | |
5125 | t = fold_build2 (MULT_EXPR, itype, t, | |
5126 | fold_convert (itype, fd->loops[i].step)); | |
5127 | if (POINTER_TYPE_P (vtype)) | |
5128 | t = fold_build_pointer_plus (fd->loops[i].n1, t); | |
5129 | else | |
5130 | t = fold_build2 (PLUS_EXPR, itype, fd->loops[i].n1, t); | |
5131 | t = force_gimple_operand_gsi (gsi, t, | |
5132 | DECL_P (fd->loops[i].v) | |
5133 | && TREE_ADDRESSABLE (fd->loops[i].v), | |
5134 | NULL_TREE, false, | |
5135 | GSI_CONTINUE_LINKING); | |
5136 | stmt = gimple_build_assign (fd->loops[i].v, t); | |
5137 | gsi_insert_after (gsi, stmt, GSI_CONTINUE_LINKING); | |
5138 | if (i != 0) | |
5139 | { | |
5140 | t = fold_build2 (TRUNC_DIV_EXPR, type, tem, counts[i]); | |
5141 | t = force_gimple_operand_gsi (gsi, t, false, NULL_TREE, | |
5142 | false, GSI_CONTINUE_LINKING); | |
5143 | stmt = gimple_build_assign (tem, t); | |
5144 | gsi_insert_after (gsi, stmt, GSI_CONTINUE_LINKING); | |
5145 | } | |
5146 | } | |
5147 | } | |
5148 | ||
5149 | ||
5150 | /* Helper function for expand_omp_for_*. Generate code like: | |
5151 | L10: | |
5152 | V3 += STEP3; | |
5153 | if (V3 cond3 N32) goto BODY_BB; else goto L11; | |
5154 | L11: | |
5155 | V3 = N31; | |
5156 | V2 += STEP2; | |
5157 | if (V2 cond2 N22) goto BODY_BB; else goto L12; | |
5158 | L12: | |
5159 | V2 = N21; | |
5160 | V1 += STEP1; | |
5161 | goto BODY_BB; */ | |
5162 | ||
5163 | static basic_block | |
5164 | extract_omp_for_update_vars (struct omp_for_data *fd, basic_block cont_bb, | |
5165 | basic_block body_bb) | |
5166 | { | |
5167 | basic_block last_bb, bb, collapse_bb = NULL; | |
5168 | int i; | |
5169 | gimple_stmt_iterator gsi; | |
5170 | edge e; | |
5171 | tree t; | |
5172 | gimple stmt; | |
5173 | ||
5174 | last_bb = cont_bb; | |
5175 | for (i = fd->collapse - 1; i >= 0; i--) | |
5176 | { | |
5177 | tree vtype = TREE_TYPE (fd->loops[i].v); | |
5178 | ||
5179 | bb = create_empty_bb (last_bb); | |
5180 | if (current_loops) | |
5181 | add_bb_to_loop (bb, last_bb->loop_father); | |
5182 | gsi = gsi_start_bb (bb); | |
5183 | ||
5184 | if (i < fd->collapse - 1) | |
5185 | { | |
5186 | e = make_edge (last_bb, bb, EDGE_FALSE_VALUE); | |
5187 | e->probability = REG_BR_PROB_BASE / 8; | |
5188 | ||
5189 | t = fd->loops[i + 1].n1; | |
5190 | t = force_gimple_operand_gsi (&gsi, t, | |
5191 | DECL_P (fd->loops[i + 1].v) | |
5192 | && TREE_ADDRESSABLE (fd->loops[i | |
5193 | + 1].v), | |
5194 | NULL_TREE, false, | |
5195 | GSI_CONTINUE_LINKING); | |
5196 | stmt = gimple_build_assign (fd->loops[i + 1].v, t); | |
5197 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
5198 | } | |
5199 | else | |
5200 | collapse_bb = bb; | |
5201 | ||
5202 | set_immediate_dominator (CDI_DOMINATORS, bb, last_bb); | |
5203 | ||
5204 | if (POINTER_TYPE_P (vtype)) | |
5205 | t = fold_build_pointer_plus (fd->loops[i].v, fd->loops[i].step); | |
5206 | else | |
5207 | t = fold_build2 (PLUS_EXPR, vtype, fd->loops[i].v, fd->loops[i].step); | |
5208 | t = force_gimple_operand_gsi (&gsi, t, | |
5209 | DECL_P (fd->loops[i].v) | |
5210 | && TREE_ADDRESSABLE (fd->loops[i].v), | |
5211 | NULL_TREE, false, GSI_CONTINUE_LINKING); | |
5212 | stmt = gimple_build_assign (fd->loops[i].v, t); | |
5213 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
5214 | ||
5215 | if (i > 0) | |
5216 | { | |
5217 | t = fd->loops[i].n2; | |
5218 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
5219 | false, GSI_CONTINUE_LINKING); | |
5220 | tree v = fd->loops[i].v; | |
5221 | if (DECL_P (v) && TREE_ADDRESSABLE (v)) | |
5222 | v = force_gimple_operand_gsi (&gsi, v, true, NULL_TREE, | |
5223 | false, GSI_CONTINUE_LINKING); | |
5224 | t = fold_build2 (fd->loops[i].cond_code, boolean_type_node, v, t); | |
5225 | stmt = gimple_build_cond_empty (t); | |
5226 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
5227 | e = make_edge (bb, body_bb, EDGE_TRUE_VALUE); | |
5228 | e->probability = REG_BR_PROB_BASE * 7 / 8; | |
5229 | } | |
5230 | else | |
5231 | make_edge (bb, body_bb, EDGE_FALLTHRU); | |
5232 | last_bb = bb; | |
5233 | } | |
5234 | ||
5235 | return collapse_bb; | |
5236 | } | |
5237 | ||
5238 | ||
773c5ba7 | 5239 | /* A subroutine of expand_omp_for. Generate code for a parallel |
1e8e9920 | 5240 | loop with any schedule. Given parameters: |
5241 | ||
5242 | for (V = N1; V cond N2; V += STEP) BODY; | |
5243 | ||
5244 | where COND is "<" or ">", we generate pseudocode | |
5245 | ||
5246 | more = GOMP_loop_foo_start (N1, N2, STEP, CHUNK, &istart0, &iend0); | |
773c5ba7 | 5247 | if (more) goto L0; else goto L3; |
1e8e9920 | 5248 | L0: |
5249 | V = istart0; | |
5250 | iend = iend0; | |
5251 | L1: | |
5252 | BODY; | |
5253 | V += STEP; | |
773c5ba7 | 5254 | if (V cond iend) goto L1; else goto L2; |
1e8e9920 | 5255 | L2: |
773c5ba7 | 5256 | if (GOMP_loop_foo_next (&istart0, &iend0)) goto L0; else goto L3; |
5257 | L3: | |
1e8e9920 | 5258 | |
773c5ba7 | 5259 | If this is a combined omp parallel loop, instead of the call to |
fd6481cf | 5260 | GOMP_loop_foo_start, we call GOMP_loop_foo_next. |
bc7bff74 | 5261 | If this is gimple_omp_for_combined_p loop, then instead of assigning |
5262 | V and iend in L0 we assign the first two _looptemp_ clause decls of the | |
5263 | inner GIMPLE_OMP_FOR and V += STEP; and | |
5264 | if (V cond iend) goto L1; else goto L2; are removed. | |
fd6481cf | 5265 | |
5266 | For collapsed loops, given parameters: | |
5267 | collapse(3) | |
5268 | for (V1 = N11; V1 cond1 N12; V1 += STEP1) | |
5269 | for (V2 = N21; V2 cond2 N22; V2 += STEP2) | |
5270 | for (V3 = N31; V3 cond3 N32; V3 += STEP3) | |
5271 | BODY; | |
5272 | ||
5273 | we generate pseudocode | |
5274 | ||
8e6b4515 | 5275 | if (__builtin_expect (N32 cond3 N31, 0)) goto Z0; |
fd6481cf | 5276 | if (cond3 is <) |
5277 | adj = STEP3 - 1; | |
5278 | else | |
5279 | adj = STEP3 + 1; | |
5280 | count3 = (adj + N32 - N31) / STEP3; | |
8e6b4515 | 5281 | if (__builtin_expect (N22 cond2 N21, 0)) goto Z0; |
fd6481cf | 5282 | if (cond2 is <) |
5283 | adj = STEP2 - 1; | |
5284 | else | |
5285 | adj = STEP2 + 1; | |
5286 | count2 = (adj + N22 - N21) / STEP2; | |
8e6b4515 | 5287 | if (__builtin_expect (N12 cond1 N11, 0)) goto Z0; |
fd6481cf | 5288 | if (cond1 is <) |
5289 | adj = STEP1 - 1; | |
5290 | else | |
5291 | adj = STEP1 + 1; | |
5292 | count1 = (adj + N12 - N11) / STEP1; | |
5293 | count = count1 * count2 * count3; | |
8e6b4515 | 5294 | goto Z1; |
5295 | Z0: | |
5296 | count = 0; | |
5297 | Z1: | |
fd6481cf | 5298 | more = GOMP_loop_foo_start (0, count, 1, CHUNK, &istart0, &iend0); |
5299 | if (more) goto L0; else goto L3; | |
5300 | L0: | |
5301 | V = istart0; | |
5302 | T = V; | |
5303 | V3 = N31 + (T % count3) * STEP3; | |
5304 | T = T / count3; | |
5305 | V2 = N21 + (T % count2) * STEP2; | |
5306 | T = T / count2; | |
5307 | V1 = N11 + T * STEP1; | |
5308 | iend = iend0; | |
5309 | L1: | |
5310 | BODY; | |
5311 | V += 1; | |
5312 | if (V < iend) goto L10; else goto L2; | |
5313 | L10: | |
5314 | V3 += STEP3; | |
5315 | if (V3 cond3 N32) goto L1; else goto L11; | |
5316 | L11: | |
5317 | V3 = N31; | |
5318 | V2 += STEP2; | |
5319 | if (V2 cond2 N22) goto L1; else goto L12; | |
5320 | L12: | |
5321 | V2 = N21; | |
5322 | V1 += STEP1; | |
5323 | goto L1; | |
5324 | L2: | |
5325 | if (GOMP_loop_foo_next (&istart0, &iend0)) goto L0; else goto L3; | |
5326 | L3: | |
5327 | ||
5328 | */ | |
1e8e9920 | 5329 | |
61e47ac8 | 5330 | static void |
773c5ba7 | 5331 | expand_omp_for_generic (struct omp_region *region, |
5332 | struct omp_for_data *fd, | |
1e8e9920 | 5333 | enum built_in_function start_fn, |
bc7bff74 | 5334 | enum built_in_function next_fn, |
5335 | gimple inner_stmt) | |
1e8e9920 | 5336 | { |
75a70cf9 | 5337 | tree type, istart0, iend0, iend; |
fd6481cf | 5338 | tree t, vmain, vback, bias = NULL_TREE; |
5339 | basic_block entry_bb, cont_bb, exit_bb, l0_bb, l1_bb, collapse_bb; | |
03ed154b | 5340 | basic_block l2_bb = NULL, l3_bb = NULL; |
75a70cf9 | 5341 | gimple_stmt_iterator gsi; |
5342 | gimple stmt; | |
773c5ba7 | 5343 | bool in_combined_parallel = is_combined_parallel (region); |
ac6e3339 | 5344 | bool broken_loop = region->cont == NULL; |
79acaae1 | 5345 | edge e, ne; |
fd6481cf | 5346 | tree *counts = NULL; |
5347 | int i; | |
ac6e3339 | 5348 | |
5349 | gcc_assert (!broken_loop || !in_combined_parallel); | |
fd6481cf | 5350 | gcc_assert (fd->iter_type == long_integer_type_node |
5351 | || !in_combined_parallel); | |
1e8e9920 | 5352 | |
fd6481cf | 5353 | type = TREE_TYPE (fd->loop.v); |
5354 | istart0 = create_tmp_var (fd->iter_type, ".istart0"); | |
5355 | iend0 = create_tmp_var (fd->iter_type, ".iend0"); | |
6d63fc03 | 5356 | TREE_ADDRESSABLE (istart0) = 1; |
5357 | TREE_ADDRESSABLE (iend0) = 1; | |
1e8e9920 | 5358 | |
fd6481cf | 5359 | /* See if we need to bias by LLONG_MIN. */ |
5360 | if (fd->iter_type == long_long_unsigned_type_node | |
5361 | && TREE_CODE (type) == INTEGER_TYPE | |
5362 | && !TYPE_UNSIGNED (type)) | |
5363 | { | |
5364 | tree n1, n2; | |
5365 | ||
5366 | if (fd->loop.cond_code == LT_EXPR) | |
5367 | { | |
5368 | n1 = fd->loop.n1; | |
5369 | n2 = fold_build2 (PLUS_EXPR, type, fd->loop.n2, fd->loop.step); | |
5370 | } | |
5371 | else | |
5372 | { | |
5373 | n1 = fold_build2 (MINUS_EXPR, type, fd->loop.n2, fd->loop.step); | |
5374 | n2 = fd->loop.n1; | |
5375 | } | |
5376 | if (TREE_CODE (n1) != INTEGER_CST | |
5377 | || TREE_CODE (n2) != INTEGER_CST | |
5378 | || ((tree_int_cst_sgn (n1) < 0) ^ (tree_int_cst_sgn (n2) < 0))) | |
5379 | bias = fold_convert (fd->iter_type, TYPE_MIN_VALUE (type)); | |
5380 | } | |
5381 | ||
61e47ac8 | 5382 | entry_bb = region->entry; |
03ed154b | 5383 | cont_bb = region->cont; |
fd6481cf | 5384 | collapse_bb = NULL; |
ac6e3339 | 5385 | gcc_assert (EDGE_COUNT (entry_bb->succs) == 2); |
5386 | gcc_assert (broken_loop | |
5387 | || BRANCH_EDGE (entry_bb)->dest == FALLTHRU_EDGE (cont_bb)->dest); | |
5388 | l0_bb = split_edge (FALLTHRU_EDGE (entry_bb)); | |
5389 | l1_bb = single_succ (l0_bb); | |
5390 | if (!broken_loop) | |
03ed154b | 5391 | { |
5392 | l2_bb = create_empty_bb (cont_bb); | |
ac6e3339 | 5393 | gcc_assert (BRANCH_EDGE (cont_bb)->dest == l1_bb); |
5394 | gcc_assert (EDGE_COUNT (cont_bb->succs) == 2); | |
03ed154b | 5395 | } |
ac6e3339 | 5396 | else |
5397 | l2_bb = NULL; | |
5398 | l3_bb = BRANCH_EDGE (entry_bb)->dest; | |
5399 | exit_bb = region->exit; | |
773c5ba7 | 5400 | |
75a70cf9 | 5401 | gsi = gsi_last_bb (entry_bb); |
fd6481cf | 5402 | |
75a70cf9 | 5403 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); |
fd6481cf | 5404 | if (fd->collapse > 1) |
5405 | { | |
8e6b4515 | 5406 | int first_zero_iter = -1; |
3d483a94 | 5407 | basic_block zero_iter_bb = NULL, l2_dom_bb = NULL; |
8e6b4515 | 5408 | |
3d483a94 | 5409 | counts = XALLOCAVEC (tree, fd->collapse); |
5410 | expand_omp_for_init_counts (fd, &gsi, entry_bb, counts, | |
5411 | zero_iter_bb, first_zero_iter, | |
5412 | l2_dom_bb); | |
fd6481cf | 5413 | |
8e6b4515 | 5414 | if (zero_iter_bb) |
5415 | { | |
5416 | /* Some counts[i] vars might be uninitialized if | |
5417 | some loop has zero iterations. But the body shouldn't | |
5418 | be executed in that case, so just avoid uninit warnings. */ | |
5419 | for (i = first_zero_iter; i < fd->collapse; i++) | |
5420 | if (SSA_VAR_P (counts[i])) | |
5421 | TREE_NO_WARNING (counts[i]) = 1; | |
5422 | gsi_prev (&gsi); | |
5423 | e = split_block (entry_bb, gsi_stmt (gsi)); | |
5424 | entry_bb = e->dest; | |
5425 | make_edge (zero_iter_bb, entry_bb, EDGE_FALLTHRU); | |
5426 | gsi = gsi_last_bb (entry_bb); | |
5427 | set_immediate_dominator (CDI_DOMINATORS, entry_bb, | |
5428 | get_immediate_dominator (CDI_DOMINATORS, | |
5429 | zero_iter_bb)); | |
5430 | } | |
fd6481cf | 5431 | } |
79acaae1 | 5432 | if (in_combined_parallel) |
5433 | { | |
5434 | /* In a combined parallel loop, emit a call to | |
5435 | GOMP_loop_foo_next. */ | |
b9a16870 | 5436 | t = build_call_expr (builtin_decl_explicit (next_fn), 2, |
79acaae1 | 5437 | build_fold_addr_expr (istart0), |
5438 | build_fold_addr_expr (iend0)); | |
5439 | } | |
5440 | else | |
1e8e9920 | 5441 | { |
c2f47e15 | 5442 | tree t0, t1, t2, t3, t4; |
773c5ba7 | 5443 | /* If this is not a combined parallel loop, emit a call to |
5444 | GOMP_loop_foo_start in ENTRY_BB. */ | |
c2f47e15 | 5445 | t4 = build_fold_addr_expr (iend0); |
5446 | t3 = build_fold_addr_expr (istart0); | |
fd6481cf | 5447 | t2 = fold_convert (fd->iter_type, fd->loop.step); |
3d483a94 | 5448 | t1 = fd->loop.n2; |
5449 | t0 = fd->loop.n1; | |
bc7bff74 | 5450 | if (gimple_omp_for_combined_into_p (fd->for_stmt)) |
5451 | { | |
5452 | tree innerc = find_omp_clause (gimple_omp_for_clauses (fd->for_stmt), | |
5453 | OMP_CLAUSE__LOOPTEMP_); | |
5454 | gcc_assert (innerc); | |
5455 | t0 = OMP_CLAUSE_DECL (innerc); | |
5456 | innerc = find_omp_clause (OMP_CLAUSE_CHAIN (innerc), | |
5457 | OMP_CLAUSE__LOOPTEMP_); | |
5458 | gcc_assert (innerc); | |
5459 | t1 = OMP_CLAUSE_DECL (innerc); | |
5460 | } | |
3d483a94 | 5461 | if (POINTER_TYPE_P (TREE_TYPE (t0)) |
5462 | && TYPE_PRECISION (TREE_TYPE (t0)) | |
5463 | != TYPE_PRECISION (fd->iter_type)) | |
c799f233 | 5464 | { |
5465 | /* Avoid casting pointers to integer of a different size. */ | |
3cea8318 | 5466 | tree itype = signed_type_for (type); |
3d483a94 | 5467 | t1 = fold_convert (fd->iter_type, fold_convert (itype, t1)); |
5468 | t0 = fold_convert (fd->iter_type, fold_convert (itype, t0)); | |
c799f233 | 5469 | } |
5470 | else | |
5471 | { | |
3d483a94 | 5472 | t1 = fold_convert (fd->iter_type, t1); |
5473 | t0 = fold_convert (fd->iter_type, t0); | |
c799f233 | 5474 | } |
fd6481cf | 5475 | if (bias) |
1e8e9920 | 5476 | { |
fd6481cf | 5477 | t1 = fold_build2 (PLUS_EXPR, fd->iter_type, t1, bias); |
5478 | t0 = fold_build2 (PLUS_EXPR, fd->iter_type, t0, bias); | |
5479 | } | |
5480 | if (fd->iter_type == long_integer_type_node) | |
5481 | { | |
5482 | if (fd->chunk_size) | |
5483 | { | |
5484 | t = fold_convert (fd->iter_type, fd->chunk_size); | |
b9a16870 | 5485 | t = build_call_expr (builtin_decl_explicit (start_fn), |
5486 | 6, t0, t1, t2, t, t3, t4); | |
fd6481cf | 5487 | } |
5488 | else | |
b9a16870 | 5489 | t = build_call_expr (builtin_decl_explicit (start_fn), |
5490 | 5, t0, t1, t2, t3, t4); | |
1e8e9920 | 5491 | } |
c2f47e15 | 5492 | else |
fd6481cf | 5493 | { |
5494 | tree t5; | |
5495 | tree c_bool_type; | |
b9a16870 | 5496 | tree bfn_decl; |
fd6481cf | 5497 | |
5498 | /* The GOMP_loop_ull_*start functions have additional boolean | |
5499 | argument, true for < loops and false for > loops. | |
5500 | In Fortran, the C bool type can be different from | |
5501 | boolean_type_node. */ | |
b9a16870 | 5502 | bfn_decl = builtin_decl_explicit (start_fn); |
5503 | c_bool_type = TREE_TYPE (TREE_TYPE (bfn_decl)); | |
fd6481cf | 5504 | t5 = build_int_cst (c_bool_type, |
5505 | fd->loop.cond_code == LT_EXPR ? 1 : 0); | |
5506 | if (fd->chunk_size) | |
5507 | { | |
b9a16870 | 5508 | tree bfn_decl = builtin_decl_explicit (start_fn); |
fd6481cf | 5509 | t = fold_convert (fd->iter_type, fd->chunk_size); |
b9a16870 | 5510 | t = build_call_expr (bfn_decl, 7, t5, t0, t1, t2, t, t3, t4); |
fd6481cf | 5511 | } |
5512 | else | |
b9a16870 | 5513 | t = build_call_expr (builtin_decl_explicit (start_fn), |
5514 | 6, t5, t0, t1, t2, t3, t4); | |
fd6481cf | 5515 | } |
1e8e9920 | 5516 | } |
fd6481cf | 5517 | if (TREE_TYPE (t) != boolean_type_node) |
5518 | t = fold_build2 (NE_EXPR, boolean_type_node, | |
5519 | t, build_int_cst (TREE_TYPE (t), 0)); | |
75a70cf9 | 5520 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, |
5521 | true, GSI_SAME_STMT); | |
5522 | gsi_insert_after (&gsi, gimple_build_cond_empty (t), GSI_SAME_STMT); | |
79acaae1 | 5523 | |
75a70cf9 | 5524 | /* Remove the GIMPLE_OMP_FOR statement. */ |
5525 | gsi_remove (&gsi, true); | |
1e8e9920 | 5526 | |
773c5ba7 | 5527 | /* Iteration setup for sequential loop goes in L0_BB. */ |
3d483a94 | 5528 | tree startvar = fd->loop.v; |
5529 | tree endvar = NULL_TREE; | |
5530 | ||
bc7bff74 | 5531 | if (gimple_omp_for_combined_p (fd->for_stmt)) |
5532 | { | |
5533 | gcc_assert (gimple_code (inner_stmt) == GIMPLE_OMP_FOR | |
5534 | && gimple_omp_for_kind (inner_stmt) | |
5535 | == GF_OMP_FOR_KIND_SIMD); | |
5536 | tree innerc = find_omp_clause (gimple_omp_for_clauses (inner_stmt), | |
5537 | OMP_CLAUSE__LOOPTEMP_); | |
5538 | gcc_assert (innerc); | |
5539 | startvar = OMP_CLAUSE_DECL (innerc); | |
5540 | innerc = find_omp_clause (OMP_CLAUSE_CHAIN (innerc), | |
5541 | OMP_CLAUSE__LOOPTEMP_); | |
5542 | gcc_assert (innerc); | |
5543 | endvar = OMP_CLAUSE_DECL (innerc); | |
5544 | } | |
5545 | ||
75a70cf9 | 5546 | gsi = gsi_start_bb (l0_bb); |
1efcacec | 5547 | t = istart0; |
fd6481cf | 5548 | if (bias) |
1efcacec | 5549 | t = fold_build2 (MINUS_EXPR, fd->iter_type, t, bias); |
3d483a94 | 5550 | if (POINTER_TYPE_P (TREE_TYPE (startvar))) |
5551 | t = fold_convert (signed_type_for (TREE_TYPE (startvar)), t); | |
5552 | t = fold_convert (TREE_TYPE (startvar), t); | |
4abecb72 | 5553 | t = force_gimple_operand_gsi (&gsi, t, |
3d483a94 | 5554 | DECL_P (startvar) |
5555 | && TREE_ADDRESSABLE (startvar), | |
4abecb72 | 5556 | NULL_TREE, false, GSI_CONTINUE_LINKING); |
3d483a94 | 5557 | stmt = gimple_build_assign (startvar, t); |
75a70cf9 | 5558 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); |
1e8e9920 | 5559 | |
1efcacec | 5560 | t = iend0; |
fd6481cf | 5561 | if (bias) |
1efcacec | 5562 | t = fold_build2 (MINUS_EXPR, fd->iter_type, t, bias); |
3d483a94 | 5563 | if (POINTER_TYPE_P (TREE_TYPE (startvar))) |
5564 | t = fold_convert (signed_type_for (TREE_TYPE (startvar)), t); | |
5565 | t = fold_convert (TREE_TYPE (startvar), t); | |
75a70cf9 | 5566 | iend = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, |
5567 | false, GSI_CONTINUE_LINKING); | |
3d483a94 | 5568 | if (endvar) |
fd6481cf | 5569 | { |
3d483a94 | 5570 | stmt = gimple_build_assign (endvar, iend); |
75a70cf9 | 5571 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); |
fd6481cf | 5572 | } |
3d483a94 | 5573 | if (fd->collapse > 1) |
bc7bff74 | 5574 | expand_omp_for_init_vars (fd, &gsi, counts, inner_stmt, startvar); |
773c5ba7 | 5575 | |
ac6e3339 | 5576 | if (!broken_loop) |
03ed154b | 5577 | { |
ac6e3339 | 5578 | /* Code to control the increment and predicate for the sequential |
5579 | loop goes in the CONT_BB. */ | |
75a70cf9 | 5580 | gsi = gsi_last_bb (cont_bb); |
5581 | stmt = gsi_stmt (gsi); | |
5582 | gcc_assert (gimple_code (stmt) == GIMPLE_OMP_CONTINUE); | |
5583 | vmain = gimple_omp_continue_control_use (stmt); | |
5584 | vback = gimple_omp_continue_control_def (stmt); | |
79acaae1 | 5585 | |
bc7bff74 | 5586 | if (!gimple_omp_for_combined_p (fd->for_stmt)) |
3d483a94 | 5587 | { |
5588 | if (POINTER_TYPE_P (type)) | |
5589 | t = fold_build_pointer_plus (vmain, fd->loop.step); | |
5590 | else | |
5591 | t = fold_build2 (PLUS_EXPR, type, vmain, fd->loop.step); | |
5592 | t = force_gimple_operand_gsi (&gsi, t, | |
5593 | DECL_P (vback) | |
5594 | && TREE_ADDRESSABLE (vback), | |
5595 | NULL_TREE, true, GSI_SAME_STMT); | |
5596 | stmt = gimple_build_assign (vback, t); | |
5597 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
5598 | ||
5599 | t = build2 (fd->loop.cond_code, boolean_type_node, | |
5600 | DECL_P (vback) && TREE_ADDRESSABLE (vback) ? t : vback, | |
5601 | iend); | |
5602 | stmt = gimple_build_cond_empty (t); | |
5603 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
5604 | } | |
773c5ba7 | 5605 | |
75a70cf9 | 5606 | /* Remove GIMPLE_OMP_CONTINUE. */ |
5607 | gsi_remove (&gsi, true); | |
773c5ba7 | 5608 | |
bc7bff74 | 5609 | if (fd->collapse > 1 && !gimple_omp_for_combined_p (fd->for_stmt)) |
3d483a94 | 5610 | collapse_bb = extract_omp_for_update_vars (fd, cont_bb, l1_bb); |
fd6481cf | 5611 | |
ac6e3339 | 5612 | /* Emit code to get the next parallel iteration in L2_BB. */ |
75a70cf9 | 5613 | gsi = gsi_start_bb (l2_bb); |
773c5ba7 | 5614 | |
b9a16870 | 5615 | t = build_call_expr (builtin_decl_explicit (next_fn), 2, |
ac6e3339 | 5616 | build_fold_addr_expr (istart0), |
5617 | build_fold_addr_expr (iend0)); | |
75a70cf9 | 5618 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, |
5619 | false, GSI_CONTINUE_LINKING); | |
fd6481cf | 5620 | if (TREE_TYPE (t) != boolean_type_node) |
5621 | t = fold_build2 (NE_EXPR, boolean_type_node, | |
5622 | t, build_int_cst (TREE_TYPE (t), 0)); | |
75a70cf9 | 5623 | stmt = gimple_build_cond_empty (t); |
5624 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
ac6e3339 | 5625 | } |
1e8e9920 | 5626 | |
61e47ac8 | 5627 | /* Add the loop cleanup function. */ |
75a70cf9 | 5628 | gsi = gsi_last_bb (exit_bb); |
5629 | if (gimple_omp_return_nowait_p (gsi_stmt (gsi))) | |
b9a16870 | 5630 | t = builtin_decl_explicit (BUILT_IN_GOMP_LOOP_END_NOWAIT); |
bc7bff74 | 5631 | else if (gimple_omp_return_lhs (gsi_stmt (gsi))) |
5632 | t = builtin_decl_explicit (BUILT_IN_GOMP_LOOP_END_CANCEL); | |
61e47ac8 | 5633 | else |
b9a16870 | 5634 | t = builtin_decl_explicit (BUILT_IN_GOMP_LOOP_END); |
75a70cf9 | 5635 | stmt = gimple_build_call (t, 0); |
bc7bff74 | 5636 | if (gimple_omp_return_lhs (gsi_stmt (gsi))) |
5637 | gimple_call_set_lhs (stmt, gimple_omp_return_lhs (gsi_stmt (gsi))); | |
75a70cf9 | 5638 | gsi_insert_after (&gsi, stmt, GSI_SAME_STMT); |
5639 | gsi_remove (&gsi, true); | |
773c5ba7 | 5640 | |
5641 | /* Connect the new blocks. */ | |
79acaae1 | 5642 | find_edge (entry_bb, l0_bb)->flags = EDGE_TRUE_VALUE; |
5643 | find_edge (entry_bb, l3_bb)->flags = EDGE_FALSE_VALUE; | |
1e8e9920 | 5644 | |
ac6e3339 | 5645 | if (!broken_loop) |
5646 | { | |
75a70cf9 | 5647 | gimple_seq phis; |
5648 | ||
79acaae1 | 5649 | e = find_edge (cont_bb, l3_bb); |
5650 | ne = make_edge (l2_bb, l3_bb, EDGE_FALSE_VALUE); | |
5651 | ||
75a70cf9 | 5652 | phis = phi_nodes (l3_bb); |
5653 | for (gsi = gsi_start (phis); !gsi_end_p (gsi); gsi_next (&gsi)) | |
5654 | { | |
5655 | gimple phi = gsi_stmt (gsi); | |
5656 | SET_USE (PHI_ARG_DEF_PTR_FROM_EDGE (phi, ne), | |
5657 | PHI_ARG_DEF_FROM_EDGE (phi, e)); | |
5658 | } | |
79acaae1 | 5659 | remove_edge (e); |
5660 | ||
ac6e3339 | 5661 | make_edge (cont_bb, l2_bb, EDGE_FALSE_VALUE); |
f6568ea4 | 5662 | if (current_loops) |
5663 | add_bb_to_loop (l2_bb, cont_bb->loop_father); | |
3d483a94 | 5664 | e = find_edge (cont_bb, l1_bb); |
bc7bff74 | 5665 | if (gimple_omp_for_combined_p (fd->for_stmt)) |
5666 | { | |
5667 | remove_edge (e); | |
5668 | e = NULL; | |
5669 | } | |
3d483a94 | 5670 | else if (fd->collapse > 1) |
fd6481cf | 5671 | { |
fd6481cf | 5672 | remove_edge (e); |
5673 | e = make_edge (cont_bb, collapse_bb, EDGE_TRUE_VALUE); | |
5674 | } | |
5675 | else | |
3d483a94 | 5676 | e->flags = EDGE_TRUE_VALUE; |
5677 | if (e) | |
fd6481cf | 5678 | { |
3d483a94 | 5679 | e->probability = REG_BR_PROB_BASE * 7 / 8; |
5680 | find_edge (cont_bb, l2_bb)->probability = REG_BR_PROB_BASE / 8; | |
5681 | } | |
5682 | else | |
5683 | { | |
5684 | e = find_edge (cont_bb, l2_bb); | |
5685 | e->flags = EDGE_FALLTHRU; | |
fd6481cf | 5686 | } |
ac6e3339 | 5687 | make_edge (l2_bb, l0_bb, EDGE_TRUE_VALUE); |
79acaae1 | 5688 | |
5689 | set_immediate_dominator (CDI_DOMINATORS, l2_bb, | |
5690 | recompute_dominator (CDI_DOMINATORS, l2_bb)); | |
5691 | set_immediate_dominator (CDI_DOMINATORS, l3_bb, | |
5692 | recompute_dominator (CDI_DOMINATORS, l3_bb)); | |
5693 | set_immediate_dominator (CDI_DOMINATORS, l0_bb, | |
5694 | recompute_dominator (CDI_DOMINATORS, l0_bb)); | |
5695 | set_immediate_dominator (CDI_DOMINATORS, l1_bb, | |
5696 | recompute_dominator (CDI_DOMINATORS, l1_bb)); | |
04c2922b | 5697 | |
5698 | struct loop *outer_loop = alloc_loop (); | |
5699 | outer_loop->header = l0_bb; | |
5700 | outer_loop->latch = l2_bb; | |
5701 | add_loop (outer_loop, l0_bb->loop_father); | |
5702 | ||
bc7bff74 | 5703 | if (!gimple_omp_for_combined_p (fd->for_stmt)) |
3d483a94 | 5704 | { |
5705 | struct loop *loop = alloc_loop (); | |
5706 | loop->header = l1_bb; | |
5707 | /* The loop may have multiple latches. */ | |
5708 | add_loop (loop, outer_loop); | |
5709 | } | |
ac6e3339 | 5710 | } |
1e8e9920 | 5711 | } |
5712 | ||
5713 | ||
773c5ba7 | 5714 | /* A subroutine of expand_omp_for. Generate code for a parallel |
5715 | loop with static schedule and no specified chunk size. Given | |
5716 | parameters: | |
1e8e9920 | 5717 | |
5718 | for (V = N1; V cond N2; V += STEP) BODY; | |
5719 | ||
5720 | where COND is "<" or ">", we generate pseudocode | |
5721 | ||
8e6b4515 | 5722 | if ((__typeof (V)) -1 > 0 && N2 cond N1) goto L2; |
1e8e9920 | 5723 | if (cond is <) |
5724 | adj = STEP - 1; | |
5725 | else | |
5726 | adj = STEP + 1; | |
fd6481cf | 5727 | if ((__typeof (V)) -1 > 0 && cond is >) |
5728 | n = -(adj + N2 - N1) / -STEP; | |
5729 | else | |
5730 | n = (adj + N2 - N1) / STEP; | |
1e8e9920 | 5731 | q = n / nthreads; |
31712e83 | 5732 | tt = n % nthreads; |
5733 | if (threadid < tt) goto L3; else goto L4; | |
5734 | L3: | |
5735 | tt = 0; | |
5736 | q = q + 1; | |
5737 | L4: | |
5738 | s0 = q * threadid + tt; | |
5739 | e0 = s0 + q; | |
79acaae1 | 5740 | V = s0 * STEP + N1; |
1e8e9920 | 5741 | if (s0 >= e0) goto L2; else goto L0; |
5742 | L0: | |
1e8e9920 | 5743 | e = e0 * STEP + N1; |
5744 | L1: | |
5745 | BODY; | |
5746 | V += STEP; | |
5747 | if (V cond e) goto L1; | |
1e8e9920 | 5748 | L2: |
5749 | */ | |
5750 | ||
61e47ac8 | 5751 | static void |
773c5ba7 | 5752 | expand_omp_for_static_nochunk (struct omp_region *region, |
bc7bff74 | 5753 | struct omp_for_data *fd, |
5754 | gimple inner_stmt) | |
1e8e9920 | 5755 | { |
31712e83 | 5756 | tree n, q, s0, e0, e, t, tt, nthreads, threadid; |
fd6481cf | 5757 | tree type, itype, vmain, vback; |
31712e83 | 5758 | basic_block entry_bb, second_bb, third_bb, exit_bb, seq_start_bb; |
bc7bff74 | 5759 | basic_block body_bb, cont_bb, collapse_bb = NULL; |
61e47ac8 | 5760 | basic_block fin_bb; |
75a70cf9 | 5761 | gimple_stmt_iterator gsi; |
5762 | gimple stmt; | |
31712e83 | 5763 | edge ep; |
bc7bff74 | 5764 | enum built_in_function get_num_threads = BUILT_IN_OMP_GET_NUM_THREADS; |
5765 | enum built_in_function get_thread_num = BUILT_IN_OMP_GET_THREAD_NUM; | |
5766 | bool broken_loop = region->cont == NULL; | |
5767 | tree *counts = NULL; | |
5768 | tree n1, n2, step; | |
1e8e9920 | 5769 | |
fd6481cf | 5770 | itype = type = TREE_TYPE (fd->loop.v); |
5771 | if (POINTER_TYPE_P (type)) | |
3cea8318 | 5772 | itype = signed_type_for (type); |
1e8e9920 | 5773 | |
61e47ac8 | 5774 | entry_bb = region->entry; |
61e47ac8 | 5775 | cont_bb = region->cont; |
ac6e3339 | 5776 | gcc_assert (EDGE_COUNT (entry_bb->succs) == 2); |
bc7bff74 | 5777 | fin_bb = BRANCH_EDGE (entry_bb)->dest; |
5778 | gcc_assert (broken_loop | |
5779 | || (fin_bb == FALLTHRU_EDGE (cont_bb)->dest)); | |
ac6e3339 | 5780 | seq_start_bb = split_edge (FALLTHRU_EDGE (entry_bb)); |
5781 | body_bb = single_succ (seq_start_bb); | |
bc7bff74 | 5782 | if (!broken_loop) |
5783 | { | |
5784 | gcc_assert (BRANCH_EDGE (cont_bb)->dest == body_bb); | |
5785 | gcc_assert (EDGE_COUNT (cont_bb->succs) == 2); | |
5786 | } | |
61e47ac8 | 5787 | exit_bb = region->exit; |
5788 | ||
773c5ba7 | 5789 | /* Iteration space partitioning goes in ENTRY_BB. */ |
75a70cf9 | 5790 | gsi = gsi_last_bb (entry_bb); |
5791 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); | |
61e47ac8 | 5792 | |
bc7bff74 | 5793 | if (gimple_omp_for_kind (fd->for_stmt) == GF_OMP_FOR_KIND_DISTRIBUTE) |
5794 | { | |
5795 | get_num_threads = BUILT_IN_OMP_GET_NUM_TEAMS; | |
5796 | get_thread_num = BUILT_IN_OMP_GET_TEAM_NUM; | |
5797 | } | |
5798 | ||
5799 | if (fd->collapse > 1) | |
5800 | { | |
5801 | int first_zero_iter = -1; | |
5802 | basic_block l2_dom_bb = NULL; | |
5803 | ||
5804 | counts = XALLOCAVEC (tree, fd->collapse); | |
5805 | expand_omp_for_init_counts (fd, &gsi, entry_bb, counts, | |
5806 | fin_bb, first_zero_iter, | |
5807 | l2_dom_bb); | |
5808 | t = NULL_TREE; | |
5809 | } | |
5810 | else if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
5811 | t = integer_one_node; | |
5812 | else | |
5813 | t = fold_binary (fd->loop.cond_code, boolean_type_node, | |
5814 | fold_convert (type, fd->loop.n1), | |
5815 | fold_convert (type, fd->loop.n2)); | |
5816 | if (fd->collapse == 1 | |
5817 | && TYPE_UNSIGNED (type) | |
8e6b4515 | 5818 | && (t == NULL_TREE || !integer_onep (t))) |
5819 | { | |
8e6b4515 | 5820 | n1 = fold_convert (type, unshare_expr (fd->loop.n1)); |
5821 | n1 = force_gimple_operand_gsi (&gsi, n1, true, NULL_TREE, | |
5822 | true, GSI_SAME_STMT); | |
5823 | n2 = fold_convert (type, unshare_expr (fd->loop.n2)); | |
5824 | n2 = force_gimple_operand_gsi (&gsi, n2, true, NULL_TREE, | |
5825 | true, GSI_SAME_STMT); | |
5826 | stmt = gimple_build_cond (fd->loop.cond_code, n1, n2, | |
5827 | NULL_TREE, NULL_TREE); | |
5828 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
5829 | if (walk_tree (gimple_cond_lhs_ptr (stmt), | |
5830 | expand_omp_regimplify_p, NULL, NULL) | |
5831 | || walk_tree (gimple_cond_rhs_ptr (stmt), | |
5832 | expand_omp_regimplify_p, NULL, NULL)) | |
5833 | { | |
5834 | gsi = gsi_for_stmt (stmt); | |
5835 | gimple_regimplify_operands (stmt, &gsi); | |
5836 | } | |
5837 | ep = split_block (entry_bb, stmt); | |
5838 | ep->flags = EDGE_TRUE_VALUE; | |
5839 | entry_bb = ep->dest; | |
5840 | ep->probability = REG_BR_PROB_BASE - (REG_BR_PROB_BASE / 2000 - 1); | |
5841 | ep = make_edge (ep->src, fin_bb, EDGE_FALSE_VALUE); | |
5842 | ep->probability = REG_BR_PROB_BASE / 2000 - 1; | |
5843 | if (gimple_in_ssa_p (cfun)) | |
5844 | { | |
5845 | int dest_idx = find_edge (entry_bb, fin_bb)->dest_idx; | |
5846 | for (gsi = gsi_start_phis (fin_bb); | |
5847 | !gsi_end_p (gsi); gsi_next (&gsi)) | |
5848 | { | |
5849 | gimple phi = gsi_stmt (gsi); | |
5850 | add_phi_arg (phi, gimple_phi_arg_def (phi, dest_idx), | |
5851 | ep, UNKNOWN_LOCATION); | |
5852 | } | |
5853 | } | |
5854 | gsi = gsi_last_bb (entry_bb); | |
5855 | } | |
5856 | ||
bc7bff74 | 5857 | t = build_call_expr (builtin_decl_explicit (get_num_threads), 0); |
fd6481cf | 5858 | t = fold_convert (itype, t); |
75a70cf9 | 5859 | nthreads = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, |
5860 | true, GSI_SAME_STMT); | |
48e1416a | 5861 | |
bc7bff74 | 5862 | t = build_call_expr (builtin_decl_explicit (get_thread_num), 0); |
fd6481cf | 5863 | t = fold_convert (itype, t); |
75a70cf9 | 5864 | threadid = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, |
5865 | true, GSI_SAME_STMT); | |
1e8e9920 | 5866 | |
bc7bff74 | 5867 | n1 = fd->loop.n1; |
5868 | n2 = fd->loop.n2; | |
5869 | step = fd->loop.step; | |
5870 | if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
5871 | { | |
5872 | tree innerc = find_omp_clause (gimple_omp_for_clauses (fd->for_stmt), | |
5873 | OMP_CLAUSE__LOOPTEMP_); | |
5874 | gcc_assert (innerc); | |
5875 | n1 = OMP_CLAUSE_DECL (innerc); | |
5876 | innerc = find_omp_clause (OMP_CLAUSE_CHAIN (innerc), | |
5877 | OMP_CLAUSE__LOOPTEMP_); | |
5878 | gcc_assert (innerc); | |
5879 | n2 = OMP_CLAUSE_DECL (innerc); | |
5880 | } | |
5881 | n1 = force_gimple_operand_gsi (&gsi, fold_convert (type, n1), | |
5882 | true, NULL_TREE, true, GSI_SAME_STMT); | |
5883 | n2 = force_gimple_operand_gsi (&gsi, fold_convert (itype, n2), | |
5884 | true, NULL_TREE, true, GSI_SAME_STMT); | |
5885 | step = force_gimple_operand_gsi (&gsi, fold_convert (itype, step), | |
5886 | true, NULL_TREE, true, GSI_SAME_STMT); | |
fd6481cf | 5887 | |
5888 | t = build_int_cst (itype, (fd->loop.cond_code == LT_EXPR ? -1 : 1)); | |
bc7bff74 | 5889 | t = fold_build2 (PLUS_EXPR, itype, step, t); |
5890 | t = fold_build2 (PLUS_EXPR, itype, t, n2); | |
5891 | t = fold_build2 (MINUS_EXPR, itype, t, fold_convert (itype, n1)); | |
fd6481cf | 5892 | if (TYPE_UNSIGNED (itype) && fd->loop.cond_code == GT_EXPR) |
5893 | t = fold_build2 (TRUNC_DIV_EXPR, itype, | |
5894 | fold_build1 (NEGATE_EXPR, itype, t), | |
bc7bff74 | 5895 | fold_build1 (NEGATE_EXPR, itype, step)); |
fd6481cf | 5896 | else |
bc7bff74 | 5897 | t = fold_build2 (TRUNC_DIV_EXPR, itype, t, step); |
fd6481cf | 5898 | t = fold_convert (itype, t); |
75a70cf9 | 5899 | n = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, true, GSI_SAME_STMT); |
1e8e9920 | 5900 | |
072f7ab1 | 5901 | q = create_tmp_reg (itype, "q"); |
fd6481cf | 5902 | t = fold_build2 (TRUNC_DIV_EXPR, itype, n, nthreads); |
31712e83 | 5903 | t = force_gimple_operand_gsi (&gsi, t, false, NULL_TREE, true, GSI_SAME_STMT); |
5904 | gsi_insert_before (&gsi, gimple_build_assign (q, t), GSI_SAME_STMT); | |
5905 | ||
072f7ab1 | 5906 | tt = create_tmp_reg (itype, "tt"); |
31712e83 | 5907 | t = fold_build2 (TRUNC_MOD_EXPR, itype, n, nthreads); |
5908 | t = force_gimple_operand_gsi (&gsi, t, false, NULL_TREE, true, GSI_SAME_STMT); | |
5909 | gsi_insert_before (&gsi, gimple_build_assign (tt, t), GSI_SAME_STMT); | |
1e8e9920 | 5910 | |
31712e83 | 5911 | t = build2 (LT_EXPR, boolean_type_node, threadid, tt); |
5912 | stmt = gimple_build_cond_empty (t); | |
5913 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
5914 | ||
5915 | second_bb = split_block (entry_bb, stmt)->dest; | |
5916 | gsi = gsi_last_bb (second_bb); | |
5917 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); | |
5918 | ||
5919 | gsi_insert_before (&gsi, gimple_build_assign (tt, build_int_cst (itype, 0)), | |
5920 | GSI_SAME_STMT); | |
5921 | stmt = gimple_build_assign_with_ops (PLUS_EXPR, q, q, | |
5922 | build_int_cst (itype, 1)); | |
5923 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
5924 | ||
5925 | third_bb = split_block (second_bb, stmt)->dest; | |
5926 | gsi = gsi_last_bb (third_bb); | |
5927 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); | |
1e8e9920 | 5928 | |
fd6481cf | 5929 | t = build2 (MULT_EXPR, itype, q, threadid); |
31712e83 | 5930 | t = build2 (PLUS_EXPR, itype, t, tt); |
75a70cf9 | 5931 | s0 = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, true, GSI_SAME_STMT); |
1e8e9920 | 5932 | |
fd6481cf | 5933 | t = fold_build2 (PLUS_EXPR, itype, s0, q); |
75a70cf9 | 5934 | e0 = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, true, GSI_SAME_STMT); |
79acaae1 | 5935 | |
1e8e9920 | 5936 | t = build2 (GE_EXPR, boolean_type_node, s0, e0); |
75a70cf9 | 5937 | gsi_insert_before (&gsi, gimple_build_cond_empty (t), GSI_SAME_STMT); |
773c5ba7 | 5938 | |
75a70cf9 | 5939 | /* Remove the GIMPLE_OMP_FOR statement. */ |
5940 | gsi_remove (&gsi, true); | |
773c5ba7 | 5941 | |
5942 | /* Setup code for sequential iteration goes in SEQ_START_BB. */ | |
75a70cf9 | 5943 | gsi = gsi_start_bb (seq_start_bb); |
1e8e9920 | 5944 | |
bc7bff74 | 5945 | tree startvar = fd->loop.v; |
5946 | tree endvar = NULL_TREE; | |
5947 | ||
5948 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
5949 | { | |
5950 | tree clauses = gimple_code (inner_stmt) == GIMPLE_OMP_PARALLEL | |
5951 | ? gimple_omp_parallel_clauses (inner_stmt) | |
5952 | : gimple_omp_for_clauses (inner_stmt); | |
5953 | tree innerc = find_omp_clause (clauses, OMP_CLAUSE__LOOPTEMP_); | |
5954 | gcc_assert (innerc); | |
5955 | startvar = OMP_CLAUSE_DECL (innerc); | |
5956 | innerc = find_omp_clause (OMP_CLAUSE_CHAIN (innerc), | |
5957 | OMP_CLAUSE__LOOPTEMP_); | |
5958 | gcc_assert (innerc); | |
5959 | endvar = OMP_CLAUSE_DECL (innerc); | |
5960 | } | |
fd6481cf | 5961 | t = fold_convert (itype, s0); |
bc7bff74 | 5962 | t = fold_build2 (MULT_EXPR, itype, t, step); |
fd6481cf | 5963 | if (POINTER_TYPE_P (type)) |
bc7bff74 | 5964 | t = fold_build_pointer_plus (n1, t); |
fd6481cf | 5965 | else |
bc7bff74 | 5966 | t = fold_build2 (PLUS_EXPR, type, t, n1); |
5967 | t = fold_convert (TREE_TYPE (startvar), t); | |
4abecb72 | 5968 | t = force_gimple_operand_gsi (&gsi, t, |
bc7bff74 | 5969 | DECL_P (startvar) |
5970 | && TREE_ADDRESSABLE (startvar), | |
4abecb72 | 5971 | NULL_TREE, false, GSI_CONTINUE_LINKING); |
bc7bff74 | 5972 | stmt = gimple_build_assign (startvar, t); |
75a70cf9 | 5973 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); |
48e1416a | 5974 | |
fd6481cf | 5975 | t = fold_convert (itype, e0); |
bc7bff74 | 5976 | t = fold_build2 (MULT_EXPR, itype, t, step); |
fd6481cf | 5977 | if (POINTER_TYPE_P (type)) |
bc7bff74 | 5978 | t = fold_build_pointer_plus (n1, t); |
fd6481cf | 5979 | else |
bc7bff74 | 5980 | t = fold_build2 (PLUS_EXPR, type, t, n1); |
5981 | t = fold_convert (TREE_TYPE (startvar), t); | |
75a70cf9 | 5982 | e = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, |
5983 | false, GSI_CONTINUE_LINKING); | |
bc7bff74 | 5984 | if (endvar) |
5985 | { | |
5986 | stmt = gimple_build_assign (endvar, e); | |
5987 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
5988 | } | |
5989 | if (fd->collapse > 1) | |
5990 | expand_omp_for_init_vars (fd, &gsi, counts, inner_stmt, startvar); | |
1e8e9920 | 5991 | |
bc7bff74 | 5992 | if (!broken_loop) |
5993 | { | |
5994 | /* The code controlling the sequential loop replaces the | |
5995 | GIMPLE_OMP_CONTINUE. */ | |
5996 | gsi = gsi_last_bb (cont_bb); | |
5997 | stmt = gsi_stmt (gsi); | |
5998 | gcc_assert (gimple_code (stmt) == GIMPLE_OMP_CONTINUE); | |
5999 | vmain = gimple_omp_continue_control_use (stmt); | |
6000 | vback = gimple_omp_continue_control_def (stmt); | |
79acaae1 | 6001 | |
bc7bff74 | 6002 | if (!gimple_omp_for_combined_p (fd->for_stmt)) |
6003 | { | |
6004 | if (POINTER_TYPE_P (type)) | |
6005 | t = fold_build_pointer_plus (vmain, step); | |
6006 | else | |
6007 | t = fold_build2 (PLUS_EXPR, type, vmain, step); | |
6008 | t = force_gimple_operand_gsi (&gsi, t, | |
6009 | DECL_P (vback) | |
6010 | && TREE_ADDRESSABLE (vback), | |
6011 | NULL_TREE, true, GSI_SAME_STMT); | |
6012 | stmt = gimple_build_assign (vback, t); | |
6013 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
79acaae1 | 6014 | |
bc7bff74 | 6015 | t = build2 (fd->loop.cond_code, boolean_type_node, |
6016 | DECL_P (vback) && TREE_ADDRESSABLE (vback) | |
6017 | ? t : vback, e); | |
6018 | gsi_insert_before (&gsi, gimple_build_cond_empty (t), GSI_SAME_STMT); | |
6019 | } | |
1e8e9920 | 6020 | |
bc7bff74 | 6021 | /* Remove the GIMPLE_OMP_CONTINUE statement. */ |
6022 | gsi_remove (&gsi, true); | |
6023 | ||
6024 | if (fd->collapse > 1 && !gimple_omp_for_combined_p (fd->for_stmt)) | |
6025 | collapse_bb = extract_omp_for_update_vars (fd, cont_bb, body_bb); | |
6026 | } | |
773c5ba7 | 6027 | |
75a70cf9 | 6028 | /* Replace the GIMPLE_OMP_RETURN with a barrier, or nothing. */ |
6029 | gsi = gsi_last_bb (exit_bb); | |
6030 | if (!gimple_omp_return_nowait_p (gsi_stmt (gsi))) | |
bc7bff74 | 6031 | { |
6032 | t = gimple_omp_return_lhs (gsi_stmt (gsi)); | |
6033 | gsi_insert_after (&gsi, build_omp_barrier (t), GSI_SAME_STMT); | |
6034 | } | |
75a70cf9 | 6035 | gsi_remove (&gsi, true); |
773c5ba7 | 6036 | |
6037 | /* Connect all the blocks. */ | |
31712e83 | 6038 | ep = make_edge (entry_bb, third_bb, EDGE_FALSE_VALUE); |
6039 | ep->probability = REG_BR_PROB_BASE / 4 * 3; | |
6040 | ep = find_edge (entry_bb, second_bb); | |
6041 | ep->flags = EDGE_TRUE_VALUE; | |
6042 | ep->probability = REG_BR_PROB_BASE / 4; | |
6043 | find_edge (third_bb, seq_start_bb)->flags = EDGE_FALSE_VALUE; | |
6044 | find_edge (third_bb, fin_bb)->flags = EDGE_TRUE_VALUE; | |
79acaae1 | 6045 | |
bc7bff74 | 6046 | if (!broken_loop) |
6047 | { | |
6048 | ep = find_edge (cont_bb, body_bb); | |
6049 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
6050 | { | |
6051 | remove_edge (ep); | |
6052 | ep = NULL; | |
6053 | } | |
6054 | else if (fd->collapse > 1) | |
6055 | { | |
6056 | remove_edge (ep); | |
6057 | ep = make_edge (cont_bb, collapse_bb, EDGE_TRUE_VALUE); | |
6058 | } | |
6059 | else | |
6060 | ep->flags = EDGE_TRUE_VALUE; | |
6061 | find_edge (cont_bb, fin_bb)->flags | |
6062 | = ep ? EDGE_FALSE_VALUE : EDGE_FALLTHRU; | |
6063 | } | |
48e1416a | 6064 | |
31712e83 | 6065 | set_immediate_dominator (CDI_DOMINATORS, second_bb, entry_bb); |
6066 | set_immediate_dominator (CDI_DOMINATORS, third_bb, entry_bb); | |
6067 | set_immediate_dominator (CDI_DOMINATORS, seq_start_bb, third_bb); | |
bc7bff74 | 6068 | |
79acaae1 | 6069 | set_immediate_dominator (CDI_DOMINATORS, body_bb, |
6070 | recompute_dominator (CDI_DOMINATORS, body_bb)); | |
6071 | set_immediate_dominator (CDI_DOMINATORS, fin_bb, | |
6072 | recompute_dominator (CDI_DOMINATORS, fin_bb)); | |
04c2922b | 6073 | |
bc7bff74 | 6074 | if (!broken_loop && !gimple_omp_for_combined_p (fd->for_stmt)) |
6075 | { | |
6076 | struct loop *loop = alloc_loop (); | |
6077 | loop->header = body_bb; | |
6078 | if (collapse_bb == NULL) | |
6079 | loop->latch = cont_bb; | |
6080 | add_loop (loop, body_bb->loop_father); | |
6081 | } | |
1e8e9920 | 6082 | } |
6083 | ||
773c5ba7 | 6084 | |
6085 | /* A subroutine of expand_omp_for. Generate code for a parallel | |
6086 | loop with static schedule and a specified chunk size. Given | |
6087 | parameters: | |
1e8e9920 | 6088 | |
6089 | for (V = N1; V cond N2; V += STEP) BODY; | |
6090 | ||
6091 | where COND is "<" or ">", we generate pseudocode | |
6092 | ||
8e6b4515 | 6093 | if ((__typeof (V)) -1 > 0 && N2 cond N1) goto L2; |
1e8e9920 | 6094 | if (cond is <) |
6095 | adj = STEP - 1; | |
6096 | else | |
6097 | adj = STEP + 1; | |
fd6481cf | 6098 | if ((__typeof (V)) -1 > 0 && cond is >) |
6099 | n = -(adj + N2 - N1) / -STEP; | |
6100 | else | |
6101 | n = (adj + N2 - N1) / STEP; | |
1e8e9920 | 6102 | trip = 0; |
79acaae1 | 6103 | V = threadid * CHUNK * STEP + N1; -- this extra definition of V is |
6104 | here so that V is defined | |
6105 | if the loop is not entered | |
1e8e9920 | 6106 | L0: |
6107 | s0 = (trip * nthreads + threadid) * CHUNK; | |
6108 | e0 = min(s0 + CHUNK, n); | |
6109 | if (s0 < n) goto L1; else goto L4; | |
6110 | L1: | |
6111 | V = s0 * STEP + N1; | |
6112 | e = e0 * STEP + N1; | |
6113 | L2: | |
6114 | BODY; | |
6115 | V += STEP; | |
6116 | if (V cond e) goto L2; else goto L3; | |
6117 | L3: | |
6118 | trip += 1; | |
6119 | goto L0; | |
6120 | L4: | |
1e8e9920 | 6121 | */ |
6122 | ||
61e47ac8 | 6123 | static void |
bc7bff74 | 6124 | expand_omp_for_static_chunk (struct omp_region *region, |
6125 | struct omp_for_data *fd, gimple inner_stmt) | |
1e8e9920 | 6126 | { |
75a70cf9 | 6127 | tree n, s0, e0, e, t; |
79acaae1 | 6128 | tree trip_var, trip_init, trip_main, trip_back, nthreads, threadid; |
75a70cf9 | 6129 | tree type, itype, v_main, v_back, v_extra; |
773c5ba7 | 6130 | basic_block entry_bb, exit_bb, body_bb, seq_start_bb, iter_part_bb; |
bc7bff74 | 6131 | basic_block trip_update_bb = NULL, cont_bb, collapse_bb = NULL, fin_bb; |
75a70cf9 | 6132 | gimple_stmt_iterator si; |
6133 | gimple stmt; | |
6134 | edge se; | |
bc7bff74 | 6135 | enum built_in_function get_num_threads = BUILT_IN_OMP_GET_NUM_THREADS; |
6136 | enum built_in_function get_thread_num = BUILT_IN_OMP_GET_THREAD_NUM; | |
6137 | bool broken_loop = region->cont == NULL; | |
6138 | tree *counts = NULL; | |
6139 | tree n1, n2, step; | |
1e8e9920 | 6140 | |
fd6481cf | 6141 | itype = type = TREE_TYPE (fd->loop.v); |
6142 | if (POINTER_TYPE_P (type)) | |
3cea8318 | 6143 | itype = signed_type_for (type); |
1e8e9920 | 6144 | |
61e47ac8 | 6145 | entry_bb = region->entry; |
ac6e3339 | 6146 | se = split_block (entry_bb, last_stmt (entry_bb)); |
6147 | entry_bb = se->src; | |
6148 | iter_part_bb = se->dest; | |
61e47ac8 | 6149 | cont_bb = region->cont; |
ac6e3339 | 6150 | gcc_assert (EDGE_COUNT (iter_part_bb->succs) == 2); |
bc7bff74 | 6151 | fin_bb = BRANCH_EDGE (iter_part_bb)->dest; |
6152 | gcc_assert (broken_loop | |
6153 | || fin_bb == FALLTHRU_EDGE (cont_bb)->dest); | |
ac6e3339 | 6154 | seq_start_bb = split_edge (FALLTHRU_EDGE (iter_part_bb)); |
6155 | body_bb = single_succ (seq_start_bb); | |
bc7bff74 | 6156 | if (!broken_loop) |
6157 | { | |
6158 | gcc_assert (BRANCH_EDGE (cont_bb)->dest == body_bb); | |
6159 | gcc_assert (EDGE_COUNT (cont_bb->succs) == 2); | |
6160 | trip_update_bb = split_edge (FALLTHRU_EDGE (cont_bb)); | |
6161 | } | |
61e47ac8 | 6162 | exit_bb = region->exit; |
773c5ba7 | 6163 | |
773c5ba7 | 6164 | /* Trip and adjustment setup goes in ENTRY_BB. */ |
75a70cf9 | 6165 | si = gsi_last_bb (entry_bb); |
6166 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_FOR); | |
773c5ba7 | 6167 | |
bc7bff74 | 6168 | if (gimple_omp_for_kind (fd->for_stmt) == GF_OMP_FOR_KIND_DISTRIBUTE) |
6169 | { | |
6170 | get_num_threads = BUILT_IN_OMP_GET_NUM_TEAMS; | |
6171 | get_thread_num = BUILT_IN_OMP_GET_TEAM_NUM; | |
6172 | } | |
6173 | ||
6174 | if (fd->collapse > 1) | |
6175 | { | |
6176 | int first_zero_iter = -1; | |
6177 | basic_block l2_dom_bb = NULL; | |
6178 | ||
6179 | counts = XALLOCAVEC (tree, fd->collapse); | |
6180 | expand_omp_for_init_counts (fd, &si, entry_bb, counts, | |
6181 | fin_bb, first_zero_iter, | |
6182 | l2_dom_bb); | |
6183 | t = NULL_TREE; | |
6184 | } | |
6185 | else if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
6186 | t = integer_one_node; | |
6187 | else | |
6188 | t = fold_binary (fd->loop.cond_code, boolean_type_node, | |
6189 | fold_convert (type, fd->loop.n1), | |
6190 | fold_convert (type, fd->loop.n2)); | |
6191 | if (fd->collapse == 1 | |
6192 | && TYPE_UNSIGNED (type) | |
8e6b4515 | 6193 | && (t == NULL_TREE || !integer_onep (t))) |
6194 | { | |
8e6b4515 | 6195 | n1 = fold_convert (type, unshare_expr (fd->loop.n1)); |
6196 | n1 = force_gimple_operand_gsi (&si, n1, true, NULL_TREE, | |
6197 | true, GSI_SAME_STMT); | |
6198 | n2 = fold_convert (type, unshare_expr (fd->loop.n2)); | |
6199 | n2 = force_gimple_operand_gsi (&si, n2, true, NULL_TREE, | |
6200 | true, GSI_SAME_STMT); | |
6201 | stmt = gimple_build_cond (fd->loop.cond_code, n1, n2, | |
6202 | NULL_TREE, NULL_TREE); | |
6203 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); | |
6204 | if (walk_tree (gimple_cond_lhs_ptr (stmt), | |
6205 | expand_omp_regimplify_p, NULL, NULL) | |
6206 | || walk_tree (gimple_cond_rhs_ptr (stmt), | |
6207 | expand_omp_regimplify_p, NULL, NULL)) | |
6208 | { | |
6209 | si = gsi_for_stmt (stmt); | |
6210 | gimple_regimplify_operands (stmt, &si); | |
6211 | } | |
6212 | se = split_block (entry_bb, stmt); | |
6213 | se->flags = EDGE_TRUE_VALUE; | |
6214 | entry_bb = se->dest; | |
6215 | se->probability = REG_BR_PROB_BASE - (REG_BR_PROB_BASE / 2000 - 1); | |
6216 | se = make_edge (se->src, fin_bb, EDGE_FALSE_VALUE); | |
6217 | se->probability = REG_BR_PROB_BASE / 2000 - 1; | |
6218 | if (gimple_in_ssa_p (cfun)) | |
6219 | { | |
6220 | int dest_idx = find_edge (entry_bb, fin_bb)->dest_idx; | |
6221 | for (si = gsi_start_phis (fin_bb); | |
6222 | !gsi_end_p (si); gsi_next (&si)) | |
6223 | { | |
6224 | gimple phi = gsi_stmt (si); | |
6225 | add_phi_arg (phi, gimple_phi_arg_def (phi, dest_idx), | |
6226 | se, UNKNOWN_LOCATION); | |
6227 | } | |
6228 | } | |
6229 | si = gsi_last_bb (entry_bb); | |
6230 | } | |
6231 | ||
bc7bff74 | 6232 | t = build_call_expr (builtin_decl_explicit (get_num_threads), 0); |
fd6481cf | 6233 | t = fold_convert (itype, t); |
75a70cf9 | 6234 | nthreads = force_gimple_operand_gsi (&si, t, true, NULL_TREE, |
6235 | true, GSI_SAME_STMT); | |
48e1416a | 6236 | |
bc7bff74 | 6237 | t = build_call_expr (builtin_decl_explicit (get_thread_num), 0); |
fd6481cf | 6238 | t = fold_convert (itype, t); |
75a70cf9 | 6239 | threadid = force_gimple_operand_gsi (&si, t, true, NULL_TREE, |
6240 | true, GSI_SAME_STMT); | |
79acaae1 | 6241 | |
bc7bff74 | 6242 | n1 = fd->loop.n1; |
6243 | n2 = fd->loop.n2; | |
6244 | step = fd->loop.step; | |
6245 | if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
6246 | { | |
6247 | tree innerc = find_omp_clause (gimple_omp_for_clauses (fd->for_stmt), | |
6248 | OMP_CLAUSE__LOOPTEMP_); | |
6249 | gcc_assert (innerc); | |
6250 | n1 = OMP_CLAUSE_DECL (innerc); | |
6251 | innerc = find_omp_clause (OMP_CLAUSE_CHAIN (innerc), | |
6252 | OMP_CLAUSE__LOOPTEMP_); | |
6253 | gcc_assert (innerc); | |
6254 | n2 = OMP_CLAUSE_DECL (innerc); | |
6255 | } | |
6256 | n1 = force_gimple_operand_gsi (&si, fold_convert (type, n1), | |
6257 | true, NULL_TREE, true, GSI_SAME_STMT); | |
6258 | n2 = force_gimple_operand_gsi (&si, fold_convert (itype, n2), | |
6259 | true, NULL_TREE, true, GSI_SAME_STMT); | |
6260 | step = force_gimple_operand_gsi (&si, fold_convert (itype, step), | |
6261 | true, NULL_TREE, true, GSI_SAME_STMT); | |
79acaae1 | 6262 | fd->chunk_size |
75a70cf9 | 6263 | = force_gimple_operand_gsi (&si, fold_convert (itype, fd->chunk_size), |
6264 | true, NULL_TREE, true, GSI_SAME_STMT); | |
fd6481cf | 6265 | |
6266 | t = build_int_cst (itype, (fd->loop.cond_code == LT_EXPR ? -1 : 1)); | |
bc7bff74 | 6267 | t = fold_build2 (PLUS_EXPR, itype, step, t); |
6268 | t = fold_build2 (PLUS_EXPR, itype, t, n2); | |
6269 | t = fold_build2 (MINUS_EXPR, itype, t, fold_convert (itype, n1)); | |
fd6481cf | 6270 | if (TYPE_UNSIGNED (itype) && fd->loop.cond_code == GT_EXPR) |
6271 | t = fold_build2 (TRUNC_DIV_EXPR, itype, | |
6272 | fold_build1 (NEGATE_EXPR, itype, t), | |
bc7bff74 | 6273 | fold_build1 (NEGATE_EXPR, itype, step)); |
fd6481cf | 6274 | else |
bc7bff74 | 6275 | t = fold_build2 (TRUNC_DIV_EXPR, itype, t, step); |
fd6481cf | 6276 | t = fold_convert (itype, t); |
75a70cf9 | 6277 | n = force_gimple_operand_gsi (&si, t, true, NULL_TREE, |
6278 | true, GSI_SAME_STMT); | |
79acaae1 | 6279 | |
083152fb | 6280 | trip_var = create_tmp_reg (itype, ".trip"); |
79acaae1 | 6281 | if (gimple_in_ssa_p (cfun)) |
6282 | { | |
75a70cf9 | 6283 | trip_init = make_ssa_name (trip_var, NULL); |
6284 | trip_main = make_ssa_name (trip_var, NULL); | |
6285 | trip_back = make_ssa_name (trip_var, NULL); | |
79acaae1 | 6286 | } |
1e8e9920 | 6287 | else |
79acaae1 | 6288 | { |
6289 | trip_init = trip_var; | |
6290 | trip_main = trip_var; | |
6291 | trip_back = trip_var; | |
6292 | } | |
1e8e9920 | 6293 | |
75a70cf9 | 6294 | stmt = gimple_build_assign (trip_init, build_int_cst (itype, 0)); |
6295 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); | |
773c5ba7 | 6296 | |
fd6481cf | 6297 | t = fold_build2 (MULT_EXPR, itype, threadid, fd->chunk_size); |
bc7bff74 | 6298 | t = fold_build2 (MULT_EXPR, itype, t, step); |
fd6481cf | 6299 | if (POINTER_TYPE_P (type)) |
bc7bff74 | 6300 | t = fold_build_pointer_plus (n1, t); |
fd6481cf | 6301 | else |
bc7bff74 | 6302 | t = fold_build2 (PLUS_EXPR, type, t, n1); |
75a70cf9 | 6303 | v_extra = force_gimple_operand_gsi (&si, t, true, NULL_TREE, |
6304 | true, GSI_SAME_STMT); | |
79acaae1 | 6305 | |
75a70cf9 | 6306 | /* Remove the GIMPLE_OMP_FOR. */ |
6307 | gsi_remove (&si, true); | |
773c5ba7 | 6308 | |
6309 | /* Iteration space partitioning goes in ITER_PART_BB. */ | |
75a70cf9 | 6310 | si = gsi_last_bb (iter_part_bb); |
1e8e9920 | 6311 | |
fd6481cf | 6312 | t = fold_build2 (MULT_EXPR, itype, trip_main, nthreads); |
6313 | t = fold_build2 (PLUS_EXPR, itype, t, threadid); | |
6314 | t = fold_build2 (MULT_EXPR, itype, t, fd->chunk_size); | |
75a70cf9 | 6315 | s0 = force_gimple_operand_gsi (&si, t, true, NULL_TREE, |
6316 | false, GSI_CONTINUE_LINKING); | |
1e8e9920 | 6317 | |
fd6481cf | 6318 | t = fold_build2 (PLUS_EXPR, itype, s0, fd->chunk_size); |
6319 | t = fold_build2 (MIN_EXPR, itype, t, n); | |
75a70cf9 | 6320 | e0 = force_gimple_operand_gsi (&si, t, true, NULL_TREE, |
6321 | false, GSI_CONTINUE_LINKING); | |
1e8e9920 | 6322 | |
6323 | t = build2 (LT_EXPR, boolean_type_node, s0, n); | |
75a70cf9 | 6324 | gsi_insert_after (&si, gimple_build_cond_empty (t), GSI_CONTINUE_LINKING); |
773c5ba7 | 6325 | |
6326 | /* Setup code for sequential iteration goes in SEQ_START_BB. */ | |
75a70cf9 | 6327 | si = gsi_start_bb (seq_start_bb); |
1e8e9920 | 6328 | |
bc7bff74 | 6329 | tree startvar = fd->loop.v; |
6330 | tree endvar = NULL_TREE; | |
6331 | ||
6332 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
6333 | { | |
6334 | tree clauses = gimple_code (inner_stmt) == GIMPLE_OMP_PARALLEL | |
6335 | ? gimple_omp_parallel_clauses (inner_stmt) | |
6336 | : gimple_omp_for_clauses (inner_stmt); | |
6337 | tree innerc = find_omp_clause (clauses, OMP_CLAUSE__LOOPTEMP_); | |
6338 | gcc_assert (innerc); | |
6339 | startvar = OMP_CLAUSE_DECL (innerc); | |
6340 | innerc = find_omp_clause (OMP_CLAUSE_CHAIN (innerc), | |
6341 | OMP_CLAUSE__LOOPTEMP_); | |
6342 | gcc_assert (innerc); | |
6343 | endvar = OMP_CLAUSE_DECL (innerc); | |
6344 | } | |
6345 | ||
fd6481cf | 6346 | t = fold_convert (itype, s0); |
bc7bff74 | 6347 | t = fold_build2 (MULT_EXPR, itype, t, step); |
fd6481cf | 6348 | if (POINTER_TYPE_P (type)) |
bc7bff74 | 6349 | t = fold_build_pointer_plus (n1, t); |
fd6481cf | 6350 | else |
bc7bff74 | 6351 | t = fold_build2 (PLUS_EXPR, type, t, n1); |
6352 | t = fold_convert (TREE_TYPE (startvar), t); | |
4abecb72 | 6353 | t = force_gimple_operand_gsi (&si, t, |
bc7bff74 | 6354 | DECL_P (startvar) |
6355 | && TREE_ADDRESSABLE (startvar), | |
4abecb72 | 6356 | NULL_TREE, false, GSI_CONTINUE_LINKING); |
bc7bff74 | 6357 | stmt = gimple_build_assign (startvar, t); |
75a70cf9 | 6358 | gsi_insert_after (&si, stmt, GSI_CONTINUE_LINKING); |
1e8e9920 | 6359 | |
fd6481cf | 6360 | t = fold_convert (itype, e0); |
bc7bff74 | 6361 | t = fold_build2 (MULT_EXPR, itype, t, step); |
fd6481cf | 6362 | if (POINTER_TYPE_P (type)) |
bc7bff74 | 6363 | t = fold_build_pointer_plus (n1, t); |
fd6481cf | 6364 | else |
bc7bff74 | 6365 | t = fold_build2 (PLUS_EXPR, type, t, n1); |
6366 | t = fold_convert (TREE_TYPE (startvar), t); | |
75a70cf9 | 6367 | e = force_gimple_operand_gsi (&si, t, true, NULL_TREE, |
6368 | false, GSI_CONTINUE_LINKING); | |
bc7bff74 | 6369 | if (endvar) |
6370 | { | |
6371 | stmt = gimple_build_assign (endvar, e); | |
6372 | gsi_insert_after (&si, stmt, GSI_CONTINUE_LINKING); | |
6373 | } | |
6374 | if (fd->collapse > 1) | |
6375 | expand_omp_for_init_vars (fd, &si, counts, inner_stmt, startvar); | |
6376 | ||
6377 | if (!broken_loop) | |
6378 | { | |
6379 | /* The code controlling the sequential loop goes in CONT_BB, | |
6380 | replacing the GIMPLE_OMP_CONTINUE. */ | |
6381 | si = gsi_last_bb (cont_bb); | |
6382 | stmt = gsi_stmt (si); | |
6383 | gcc_assert (gimple_code (stmt) == GIMPLE_OMP_CONTINUE); | |
6384 | v_main = gimple_omp_continue_control_use (stmt); | |
6385 | v_back = gimple_omp_continue_control_def (stmt); | |
1e8e9920 | 6386 | |
bc7bff74 | 6387 | if (!gimple_omp_for_combined_p (fd->for_stmt)) |
6388 | { | |
6389 | if (POINTER_TYPE_P (type)) | |
6390 | t = fold_build_pointer_plus (v_main, step); | |
6391 | else | |
6392 | t = fold_build2 (PLUS_EXPR, type, v_main, step); | |
6393 | if (DECL_P (v_back) && TREE_ADDRESSABLE (v_back)) | |
6394 | t = force_gimple_operand_gsi (&si, t, true, NULL_TREE, | |
6395 | true, GSI_SAME_STMT); | |
6396 | stmt = gimple_build_assign (v_back, t); | |
6397 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); | |
79acaae1 | 6398 | |
bc7bff74 | 6399 | t = build2 (fd->loop.cond_code, boolean_type_node, |
6400 | DECL_P (v_back) && TREE_ADDRESSABLE (v_back) | |
6401 | ? t : v_back, e); | |
6402 | gsi_insert_before (&si, gimple_build_cond_empty (t), GSI_SAME_STMT); | |
6403 | } | |
79acaae1 | 6404 | |
bc7bff74 | 6405 | /* Remove GIMPLE_OMP_CONTINUE. */ |
6406 | gsi_remove (&si, true); | |
48e1416a | 6407 | |
bc7bff74 | 6408 | if (fd->collapse > 1 && !gimple_omp_for_combined_p (fd->for_stmt)) |
6409 | collapse_bb = extract_omp_for_update_vars (fd, cont_bb, body_bb); | |
773c5ba7 | 6410 | |
bc7bff74 | 6411 | /* Trip update code goes into TRIP_UPDATE_BB. */ |
6412 | si = gsi_start_bb (trip_update_bb); | |
1e8e9920 | 6413 | |
bc7bff74 | 6414 | t = build_int_cst (itype, 1); |
6415 | t = build2 (PLUS_EXPR, itype, trip_main, t); | |
6416 | stmt = gimple_build_assign (trip_back, t); | |
6417 | gsi_insert_after (&si, stmt, GSI_CONTINUE_LINKING); | |
6418 | } | |
1e8e9920 | 6419 | |
75a70cf9 | 6420 | /* Replace the GIMPLE_OMP_RETURN with a barrier, or nothing. */ |
6421 | si = gsi_last_bb (exit_bb); | |
6422 | if (!gimple_omp_return_nowait_p (gsi_stmt (si))) | |
bc7bff74 | 6423 | { |
6424 | t = gimple_omp_return_lhs (gsi_stmt (si)); | |
6425 | gsi_insert_after (&si, build_omp_barrier (t), GSI_SAME_STMT); | |
6426 | } | |
75a70cf9 | 6427 | gsi_remove (&si, true); |
1e8e9920 | 6428 | |
773c5ba7 | 6429 | /* Connect the new blocks. */ |
ac6e3339 | 6430 | find_edge (iter_part_bb, seq_start_bb)->flags = EDGE_TRUE_VALUE; |
6431 | find_edge (iter_part_bb, fin_bb)->flags = EDGE_FALSE_VALUE; | |
79acaae1 | 6432 | |
bc7bff74 | 6433 | if (!broken_loop) |
6434 | { | |
6435 | se = find_edge (cont_bb, body_bb); | |
6436 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
6437 | { | |
6438 | remove_edge (se); | |
6439 | se = NULL; | |
6440 | } | |
6441 | else if (fd->collapse > 1) | |
6442 | { | |
6443 | remove_edge (se); | |
6444 | se = make_edge (cont_bb, collapse_bb, EDGE_TRUE_VALUE); | |
6445 | } | |
6446 | else | |
6447 | se->flags = EDGE_TRUE_VALUE; | |
6448 | find_edge (cont_bb, trip_update_bb)->flags | |
6449 | = se ? EDGE_FALSE_VALUE : EDGE_FALLTHRU; | |
79acaae1 | 6450 | |
bc7bff74 | 6451 | redirect_edge_and_branch (single_succ_edge (trip_update_bb), iter_part_bb); |
6452 | } | |
79acaae1 | 6453 | |
6454 | if (gimple_in_ssa_p (cfun)) | |
6455 | { | |
75a70cf9 | 6456 | gimple_stmt_iterator psi; |
6457 | gimple phi; | |
6458 | edge re, ene; | |
f1f41a6c | 6459 | edge_var_map_vector *head; |
75a70cf9 | 6460 | edge_var_map *vm; |
6461 | size_t i; | |
6462 | ||
bc7bff74 | 6463 | gcc_assert (fd->collapse == 1 && !broken_loop); |
6464 | ||
79acaae1 | 6465 | /* When we redirect the edge from trip_update_bb to iter_part_bb, we |
6466 | remove arguments of the phi nodes in fin_bb. We need to create | |
6467 | appropriate phi nodes in iter_part_bb instead. */ | |
6468 | se = single_pred_edge (fin_bb); | |
6469 | re = single_succ_edge (trip_update_bb); | |
75a70cf9 | 6470 | head = redirect_edge_var_map_vector (re); |
79acaae1 | 6471 | ene = single_succ_edge (entry_bb); |
6472 | ||
75a70cf9 | 6473 | psi = gsi_start_phis (fin_bb); |
f1f41a6c | 6474 | for (i = 0; !gsi_end_p (psi) && head->iterate (i, &vm); |
75a70cf9 | 6475 | gsi_next (&psi), ++i) |
79acaae1 | 6476 | { |
75a70cf9 | 6477 | gimple nphi; |
efbcb6de | 6478 | source_location locus; |
75a70cf9 | 6479 | |
6480 | phi = gsi_stmt (psi); | |
6481 | t = gimple_phi_result (phi); | |
6482 | gcc_assert (t == redirect_edge_var_map_result (vm)); | |
79acaae1 | 6483 | nphi = create_phi_node (t, iter_part_bb); |
79acaae1 | 6484 | |
6485 | t = PHI_ARG_DEF_FROM_EDGE (phi, se); | |
efbcb6de | 6486 | locus = gimple_phi_arg_location_from_edge (phi, se); |
6487 | ||
fd6481cf | 6488 | /* A special case -- fd->loop.v is not yet computed in |
6489 | iter_part_bb, we need to use v_extra instead. */ | |
6490 | if (t == fd->loop.v) | |
79acaae1 | 6491 | t = v_extra; |
60d535d2 | 6492 | add_phi_arg (nphi, t, ene, locus); |
efbcb6de | 6493 | locus = redirect_edge_var_map_location (vm); |
60d535d2 | 6494 | add_phi_arg (nphi, redirect_edge_var_map_def (vm), re, locus); |
75a70cf9 | 6495 | } |
f1f41a6c | 6496 | gcc_assert (!gsi_end_p (psi) && i == head->length ()); |
75a70cf9 | 6497 | redirect_edge_var_map_clear (re); |
6498 | while (1) | |
6499 | { | |
6500 | psi = gsi_start_phis (fin_bb); | |
6501 | if (gsi_end_p (psi)) | |
6502 | break; | |
6503 | remove_phi_node (&psi, false); | |
79acaae1 | 6504 | } |
79acaae1 | 6505 | |
6506 | /* Make phi node for trip. */ | |
6507 | phi = create_phi_node (trip_main, iter_part_bb); | |
efbcb6de | 6508 | add_phi_arg (phi, trip_back, single_succ_edge (trip_update_bb), |
60d535d2 | 6509 | UNKNOWN_LOCATION); |
efbcb6de | 6510 | add_phi_arg (phi, trip_init, single_succ_edge (entry_bb), |
60d535d2 | 6511 | UNKNOWN_LOCATION); |
79acaae1 | 6512 | } |
6513 | ||
bc7bff74 | 6514 | if (!broken_loop) |
6515 | set_immediate_dominator (CDI_DOMINATORS, trip_update_bb, cont_bb); | |
79acaae1 | 6516 | set_immediate_dominator (CDI_DOMINATORS, iter_part_bb, |
6517 | recompute_dominator (CDI_DOMINATORS, iter_part_bb)); | |
6518 | set_immediate_dominator (CDI_DOMINATORS, fin_bb, | |
6519 | recompute_dominator (CDI_DOMINATORS, fin_bb)); | |
6520 | set_immediate_dominator (CDI_DOMINATORS, seq_start_bb, | |
6521 | recompute_dominator (CDI_DOMINATORS, seq_start_bb)); | |
6522 | set_immediate_dominator (CDI_DOMINATORS, body_bb, | |
6523 | recompute_dominator (CDI_DOMINATORS, body_bb)); | |
04c2922b | 6524 | |
bc7bff74 | 6525 | if (!broken_loop) |
6526 | { | |
6527 | struct loop *trip_loop = alloc_loop (); | |
6528 | trip_loop->header = iter_part_bb; | |
6529 | trip_loop->latch = trip_update_bb; | |
6530 | add_loop (trip_loop, iter_part_bb->loop_father); | |
04c2922b | 6531 | |
bc7bff74 | 6532 | if (!gimple_omp_for_combined_p (fd->for_stmt)) |
6533 | { | |
6534 | struct loop *loop = alloc_loop (); | |
6535 | loop->header = body_bb; | |
33ee4d72 | 6536 | if (collapse_bb == NULL) |
6537 | loop->latch = cont_bb; | |
bc7bff74 | 6538 | add_loop (loop, trip_loop); |
6539 | } | |
6540 | } | |
1e8e9920 | 6541 | } |
6542 | ||
bc7bff74 | 6543 | |
3d483a94 | 6544 | /* A subroutine of expand_omp_for. Generate code for a simd non-worksharing |
6545 | loop. Given parameters: | |
6546 | ||
6547 | for (V = N1; V cond N2; V += STEP) BODY; | |
6548 | ||
6549 | where COND is "<" or ">", we generate pseudocode | |
6550 | ||
6551 | V = N1; | |
6552 | goto L1; | |
6553 | L0: | |
6554 | BODY; | |
6555 | V += STEP; | |
6556 | L1: | |
6557 | if (V cond N2) goto L0; else goto L2; | |
6558 | L2: | |
6559 | ||
6560 | For collapsed loops, given parameters: | |
6561 | collapse(3) | |
6562 | for (V1 = N11; V1 cond1 N12; V1 += STEP1) | |
6563 | for (V2 = N21; V2 cond2 N22; V2 += STEP2) | |
6564 | for (V3 = N31; V3 cond3 N32; V3 += STEP3) | |
6565 | BODY; | |
6566 | ||
6567 | we generate pseudocode | |
6568 | ||
6569 | if (cond3 is <) | |
6570 | adj = STEP3 - 1; | |
6571 | else | |
6572 | adj = STEP3 + 1; | |
6573 | count3 = (adj + N32 - N31) / STEP3; | |
6574 | if (cond2 is <) | |
6575 | adj = STEP2 - 1; | |
6576 | else | |
6577 | adj = STEP2 + 1; | |
6578 | count2 = (adj + N22 - N21) / STEP2; | |
6579 | if (cond1 is <) | |
6580 | adj = STEP1 - 1; | |
6581 | else | |
6582 | adj = STEP1 + 1; | |
6583 | count1 = (adj + N12 - N11) / STEP1; | |
6584 | count = count1 * count2 * count3; | |
6585 | V = 0; | |
6586 | V1 = N11; | |
6587 | V2 = N21; | |
6588 | V3 = N31; | |
6589 | goto L1; | |
6590 | L0: | |
6591 | BODY; | |
6592 | V += 1; | |
6593 | V3 += STEP3; | |
6594 | V2 += (V3 cond3 N32) ? 0 : STEP2; | |
6595 | V3 = (V3 cond3 N32) ? V3 : N31; | |
6596 | V1 += (V2 cond2 N22) ? 0 : STEP1; | |
6597 | V2 = (V2 cond2 N22) ? V2 : N21; | |
6598 | L1: | |
6599 | if (V < count) goto L0; else goto L2; | |
6600 | L2: | |
6601 | ||
6602 | */ | |
6603 | ||
6604 | static void | |
6605 | expand_omp_simd (struct omp_region *region, struct omp_for_data *fd) | |
6606 | { | |
6607 | tree type, t; | |
6608 | basic_block entry_bb, cont_bb, exit_bb, l0_bb, l1_bb, l2_bb, l2_dom_bb; | |
6609 | gimple_stmt_iterator gsi; | |
6610 | gimple stmt; | |
6611 | bool broken_loop = region->cont == NULL; | |
6612 | edge e, ne; | |
6613 | tree *counts = NULL; | |
6614 | int i; | |
6615 | tree safelen = find_omp_clause (gimple_omp_for_clauses (fd->for_stmt), | |
6616 | OMP_CLAUSE_SAFELEN); | |
6617 | tree simduid = find_omp_clause (gimple_omp_for_clauses (fd->for_stmt), | |
6618 | OMP_CLAUSE__SIMDUID_); | |
bc7bff74 | 6619 | tree n1, n2; |
3d483a94 | 6620 | |
6621 | type = TREE_TYPE (fd->loop.v); | |
6622 | entry_bb = region->entry; | |
6623 | cont_bb = region->cont; | |
6624 | gcc_assert (EDGE_COUNT (entry_bb->succs) == 2); | |
6625 | gcc_assert (broken_loop | |
6626 | || BRANCH_EDGE (entry_bb)->dest == FALLTHRU_EDGE (cont_bb)->dest); | |
6627 | l0_bb = FALLTHRU_EDGE (entry_bb)->dest; | |
6628 | if (!broken_loop) | |
6629 | { | |
6630 | gcc_assert (BRANCH_EDGE (cont_bb)->dest == l0_bb); | |
6631 | gcc_assert (EDGE_COUNT (cont_bb->succs) == 2); | |
6632 | l1_bb = split_block (cont_bb, last_stmt (cont_bb))->dest; | |
6633 | l2_bb = BRANCH_EDGE (entry_bb)->dest; | |
6634 | } | |
6635 | else | |
6636 | { | |
6637 | BRANCH_EDGE (entry_bb)->flags &= ~EDGE_ABNORMAL; | |
6638 | l1_bb = split_edge (BRANCH_EDGE (entry_bb)); | |
6639 | l2_bb = single_succ (l1_bb); | |
6640 | } | |
6641 | exit_bb = region->exit; | |
6642 | l2_dom_bb = NULL; | |
6643 | ||
6644 | gsi = gsi_last_bb (entry_bb); | |
6645 | ||
6646 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); | |
6647 | /* Not needed in SSA form right now. */ | |
6648 | gcc_assert (!gimple_in_ssa_p (cfun)); | |
6649 | if (fd->collapse > 1) | |
6650 | { | |
6651 | int first_zero_iter = -1; | |
6652 | basic_block zero_iter_bb = l2_bb; | |
6653 | ||
6654 | counts = XALLOCAVEC (tree, fd->collapse); | |
6655 | expand_omp_for_init_counts (fd, &gsi, entry_bb, counts, | |
6656 | zero_iter_bb, first_zero_iter, | |
6657 | l2_dom_bb); | |
6658 | } | |
6659 | if (l2_dom_bb == NULL) | |
6660 | l2_dom_bb = l1_bb; | |
6661 | ||
bc7bff74 | 6662 | n1 = fd->loop.n1; |
3d483a94 | 6663 | n2 = fd->loop.n2; |
bc7bff74 | 6664 | if (gimple_omp_for_combined_into_p (fd->for_stmt)) |
6665 | { | |
6666 | tree innerc = find_omp_clause (gimple_omp_for_clauses (fd->for_stmt), | |
6667 | OMP_CLAUSE__LOOPTEMP_); | |
6668 | gcc_assert (innerc); | |
6669 | n1 = OMP_CLAUSE_DECL (innerc); | |
6670 | innerc = find_omp_clause (OMP_CLAUSE_CHAIN (innerc), | |
6671 | OMP_CLAUSE__LOOPTEMP_); | |
6672 | gcc_assert (innerc); | |
6673 | n2 = OMP_CLAUSE_DECL (innerc); | |
6674 | expand_omp_build_assign (&gsi, fd->loop.v, | |
6675 | fold_convert (type, n1)); | |
6676 | if (fd->collapse > 1) | |
6677 | { | |
6678 | gsi_prev (&gsi); | |
6679 | expand_omp_for_init_vars (fd, &gsi, counts, NULL, n1); | |
6680 | gsi_next (&gsi); | |
6681 | } | |
6682 | } | |
3d483a94 | 6683 | else |
6684 | { | |
6685 | expand_omp_build_assign (&gsi, fd->loop.v, | |
6686 | fold_convert (type, fd->loop.n1)); | |
6687 | if (fd->collapse > 1) | |
6688 | for (i = 0; i < fd->collapse; i++) | |
6689 | { | |
6690 | tree itype = TREE_TYPE (fd->loops[i].v); | |
6691 | if (POINTER_TYPE_P (itype)) | |
6692 | itype = signed_type_for (itype); | |
6693 | t = fold_convert (TREE_TYPE (fd->loops[i].v), fd->loops[i].n1); | |
6694 | expand_omp_build_assign (&gsi, fd->loops[i].v, t); | |
6695 | } | |
6696 | } | |
6697 | ||
6698 | /* Remove the GIMPLE_OMP_FOR statement. */ | |
6699 | gsi_remove (&gsi, true); | |
6700 | ||
6701 | if (!broken_loop) | |
6702 | { | |
6703 | /* Code to control the increment goes in the CONT_BB. */ | |
6704 | gsi = gsi_last_bb (cont_bb); | |
6705 | stmt = gsi_stmt (gsi); | |
6706 | gcc_assert (gimple_code (stmt) == GIMPLE_OMP_CONTINUE); | |
6707 | ||
6708 | if (POINTER_TYPE_P (type)) | |
6709 | t = fold_build_pointer_plus (fd->loop.v, fd->loop.step); | |
6710 | else | |
6711 | t = fold_build2 (PLUS_EXPR, type, fd->loop.v, fd->loop.step); | |
6712 | expand_omp_build_assign (&gsi, fd->loop.v, t); | |
6713 | ||
6714 | if (fd->collapse > 1) | |
6715 | { | |
6716 | i = fd->collapse - 1; | |
6717 | if (POINTER_TYPE_P (TREE_TYPE (fd->loops[i].v))) | |
6718 | { | |
6719 | t = fold_convert (sizetype, fd->loops[i].step); | |
6720 | t = fold_build_pointer_plus (fd->loops[i].v, t); | |
6721 | } | |
6722 | else | |
6723 | { | |
6724 | t = fold_convert (TREE_TYPE (fd->loops[i].v), | |
6725 | fd->loops[i].step); | |
6726 | t = fold_build2 (PLUS_EXPR, TREE_TYPE (fd->loops[i].v), | |
6727 | fd->loops[i].v, t); | |
6728 | } | |
6729 | expand_omp_build_assign (&gsi, fd->loops[i].v, t); | |
6730 | ||
6731 | for (i = fd->collapse - 1; i > 0; i--) | |
6732 | { | |
6733 | tree itype = TREE_TYPE (fd->loops[i].v); | |
6734 | tree itype2 = TREE_TYPE (fd->loops[i - 1].v); | |
6735 | if (POINTER_TYPE_P (itype2)) | |
6736 | itype2 = signed_type_for (itype2); | |
6737 | t = build3 (COND_EXPR, itype2, | |
6738 | build2 (fd->loops[i].cond_code, boolean_type_node, | |
6739 | fd->loops[i].v, | |
6740 | fold_convert (itype, fd->loops[i].n2)), | |
6741 | build_int_cst (itype2, 0), | |
6742 | fold_convert (itype2, fd->loops[i - 1].step)); | |
6743 | if (POINTER_TYPE_P (TREE_TYPE (fd->loops[i - 1].v))) | |
6744 | t = fold_build_pointer_plus (fd->loops[i - 1].v, t); | |
6745 | else | |
6746 | t = fold_build2 (PLUS_EXPR, itype2, fd->loops[i - 1].v, t); | |
6747 | expand_omp_build_assign (&gsi, fd->loops[i - 1].v, t); | |
6748 | ||
6749 | t = build3 (COND_EXPR, itype, | |
6750 | build2 (fd->loops[i].cond_code, boolean_type_node, | |
6751 | fd->loops[i].v, | |
6752 | fold_convert (itype, fd->loops[i].n2)), | |
6753 | fd->loops[i].v, | |
6754 | fold_convert (itype, fd->loops[i].n1)); | |
6755 | expand_omp_build_assign (&gsi, fd->loops[i].v, t); | |
6756 | } | |
6757 | } | |
6758 | ||
6759 | /* Remove GIMPLE_OMP_CONTINUE. */ | |
6760 | gsi_remove (&gsi, true); | |
6761 | } | |
6762 | ||
6763 | /* Emit the condition in L1_BB. */ | |
6764 | gsi = gsi_start_bb (l1_bb); | |
6765 | ||
6766 | t = fold_convert (type, n2); | |
6767 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
6768 | false, GSI_CONTINUE_LINKING); | |
6769 | t = build2 (fd->loop.cond_code, boolean_type_node, fd->loop.v, t); | |
6770 | stmt = gimple_build_cond_empty (t); | |
6771 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
6772 | if (walk_tree (gimple_cond_lhs_ptr (stmt), expand_omp_regimplify_p, | |
6773 | NULL, NULL) | |
6774 | || walk_tree (gimple_cond_rhs_ptr (stmt), expand_omp_regimplify_p, | |
6775 | NULL, NULL)) | |
6776 | { | |
6777 | gsi = gsi_for_stmt (stmt); | |
6778 | gimple_regimplify_operands (stmt, &gsi); | |
6779 | } | |
6780 | ||
6781 | /* Remove GIMPLE_OMP_RETURN. */ | |
6782 | gsi = gsi_last_bb (exit_bb); | |
6783 | gsi_remove (&gsi, true); | |
6784 | ||
6785 | /* Connect the new blocks. */ | |
6786 | remove_edge (FALLTHRU_EDGE (entry_bb)); | |
6787 | ||
6788 | if (!broken_loop) | |
6789 | { | |
6790 | remove_edge (BRANCH_EDGE (entry_bb)); | |
6791 | make_edge (entry_bb, l1_bb, EDGE_FALLTHRU); | |
6792 | ||
6793 | e = BRANCH_EDGE (l1_bb); | |
6794 | ne = FALLTHRU_EDGE (l1_bb); | |
6795 | e->flags = EDGE_TRUE_VALUE; | |
6796 | } | |
6797 | else | |
6798 | { | |
6799 | single_succ_edge (entry_bb)->flags = EDGE_FALLTHRU; | |
6800 | ||
6801 | ne = single_succ_edge (l1_bb); | |
6802 | e = make_edge (l1_bb, l0_bb, EDGE_TRUE_VALUE); | |
6803 | ||
6804 | } | |
6805 | ne->flags = EDGE_FALSE_VALUE; | |
6806 | e->probability = REG_BR_PROB_BASE * 7 / 8; | |
6807 | ne->probability = REG_BR_PROB_BASE / 8; | |
6808 | ||
6809 | set_immediate_dominator (CDI_DOMINATORS, l1_bb, entry_bb); | |
6810 | set_immediate_dominator (CDI_DOMINATORS, l2_bb, l2_dom_bb); | |
6811 | set_immediate_dominator (CDI_DOMINATORS, l0_bb, l1_bb); | |
6812 | ||
6813 | if (!broken_loop) | |
6814 | { | |
6815 | struct loop *loop = alloc_loop (); | |
6816 | loop->header = l1_bb; | |
33ee4d72 | 6817 | loop->latch = cont_bb; |
3d483a94 | 6818 | add_loop (loop, l1_bb->loop_father); |
6819 | if (safelen == NULL_TREE) | |
6820 | loop->safelen = INT_MAX; | |
6821 | else | |
6822 | { | |
6823 | safelen = OMP_CLAUSE_SAFELEN_EXPR (safelen); | |
cd4547bf | 6824 | if (!tree_fits_uhwi_p (safelen) |
aa59f000 | 6825 | || tree_to_uhwi (safelen) > INT_MAX) |
3d483a94 | 6826 | loop->safelen = INT_MAX; |
6827 | else | |
6a0712d4 | 6828 | loop->safelen = tree_to_uhwi (safelen); |
3d483a94 | 6829 | if (loop->safelen == 1) |
6830 | loop->safelen = 0; | |
6831 | } | |
6832 | if (simduid) | |
6833 | { | |
6834 | loop->simduid = OMP_CLAUSE__SIMDUID__DECL (simduid); | |
6835 | cfun->has_simduid_loops = true; | |
6836 | } | |
043115ec | 6837 | /* If not -fno-tree-loop-vectorize, hint that we want to vectorize |
3d483a94 | 6838 | the loop. */ |
043115ec | 6839 | if ((flag_tree_loop_vectorize |
6840 | || (!global_options_set.x_flag_tree_loop_vectorize | |
6841 | && !global_options_set.x_flag_tree_vectorize)) | |
3d483a94 | 6842 | && loop->safelen > 1) |
6843 | { | |
6844 | loop->force_vect = true; | |
6845 | cfun->has_force_vect_loops = true; | |
6846 | } | |
6847 | } | |
6848 | } | |
6849 | ||
1e8e9920 | 6850 | |
773c5ba7 | 6851 | /* Expand the OpenMP loop defined by REGION. */ |
1e8e9920 | 6852 | |
773c5ba7 | 6853 | static void |
bc7bff74 | 6854 | expand_omp_for (struct omp_region *region, gimple inner_stmt) |
773c5ba7 | 6855 | { |
6856 | struct omp_for_data fd; | |
fd6481cf | 6857 | struct omp_for_data_loop *loops; |
1e8e9920 | 6858 | |
fd6481cf | 6859 | loops |
6860 | = (struct omp_for_data_loop *) | |
75a70cf9 | 6861 | alloca (gimple_omp_for_collapse (last_stmt (region->entry)) |
fd6481cf | 6862 | * sizeof (struct omp_for_data_loop)); |
fd6481cf | 6863 | extract_omp_for_data (last_stmt (region->entry), &fd, loops); |
f77459c5 | 6864 | region->sched_kind = fd.sched_kind; |
1e8e9920 | 6865 | |
b3a3ddec | 6866 | gcc_assert (EDGE_COUNT (region->entry->succs) == 2); |
6867 | BRANCH_EDGE (region->entry)->flags &= ~EDGE_ABNORMAL; | |
6868 | FALLTHRU_EDGE (region->entry)->flags &= ~EDGE_ABNORMAL; | |
6869 | if (region->cont) | |
6870 | { | |
6871 | gcc_assert (EDGE_COUNT (region->cont->succs) == 2); | |
6872 | BRANCH_EDGE (region->cont)->flags &= ~EDGE_ABNORMAL; | |
6873 | FALLTHRU_EDGE (region->cont)->flags &= ~EDGE_ABNORMAL; | |
6874 | } | |
04c2922b | 6875 | else |
75de4aa2 | 6876 | /* If there isn't a continue then this is a degerate case where |
04c2922b | 6877 | the introduction of abnormal edges during lowering will prevent |
6878 | original loops from being detected. Fix that up. */ | |
6879 | loops_state_set (LOOPS_NEED_FIXUP); | |
b3a3ddec | 6880 | |
f2697631 | 6881 | if (gimple_omp_for_kind (fd.for_stmt) & GF_OMP_FOR_KIND_SIMD) |
3d483a94 | 6882 | expand_omp_simd (region, &fd); |
6883 | else if (fd.sched_kind == OMP_CLAUSE_SCHEDULE_STATIC | |
bc7bff74 | 6884 | && !fd.have_ordered) |
1e8e9920 | 6885 | { |
6886 | if (fd.chunk_size == NULL) | |
bc7bff74 | 6887 | expand_omp_for_static_nochunk (region, &fd, inner_stmt); |
1e8e9920 | 6888 | else |
bc7bff74 | 6889 | expand_omp_for_static_chunk (region, &fd, inner_stmt); |
1e8e9920 | 6890 | } |
6891 | else | |
6892 | { | |
fd6481cf | 6893 | int fn_index, start_ix, next_ix; |
6894 | ||
3d483a94 | 6895 | gcc_assert (gimple_omp_for_kind (fd.for_stmt) |
6896 | == GF_OMP_FOR_KIND_FOR); | |
0416ca72 | 6897 | if (fd.chunk_size == NULL |
6898 | && fd.sched_kind == OMP_CLAUSE_SCHEDULE_STATIC) | |
6899 | fd.chunk_size = integer_zero_node; | |
fd6481cf | 6900 | gcc_assert (fd.sched_kind != OMP_CLAUSE_SCHEDULE_AUTO); |
6901 | fn_index = (fd.sched_kind == OMP_CLAUSE_SCHEDULE_RUNTIME) | |
75a70cf9 | 6902 | ? 3 : fd.sched_kind; |
fd6481cf | 6903 | fn_index += fd.have_ordered * 4; |
b9a16870 | 6904 | start_ix = ((int)BUILT_IN_GOMP_LOOP_STATIC_START) + fn_index; |
6905 | next_ix = ((int)BUILT_IN_GOMP_LOOP_STATIC_NEXT) + fn_index; | |
fd6481cf | 6906 | if (fd.iter_type == long_long_unsigned_type_node) |
6907 | { | |
b9a16870 | 6908 | start_ix += ((int)BUILT_IN_GOMP_LOOP_ULL_STATIC_START |
6909 | - (int)BUILT_IN_GOMP_LOOP_STATIC_START); | |
6910 | next_ix += ((int)BUILT_IN_GOMP_LOOP_ULL_STATIC_NEXT | |
6911 | - (int)BUILT_IN_GOMP_LOOP_STATIC_NEXT); | |
fd6481cf | 6912 | } |
b9c74b4d | 6913 | expand_omp_for_generic (region, &fd, (enum built_in_function) start_ix, |
bc7bff74 | 6914 | (enum built_in_function) next_ix, inner_stmt); |
1e8e9920 | 6915 | } |
28c92cbb | 6916 | |
083152fb | 6917 | if (gimple_in_ssa_p (cfun)) |
6918 | update_ssa (TODO_update_ssa_only_virtuals); | |
1e8e9920 | 6919 | } |
6920 | ||
1e8e9920 | 6921 | |
6922 | /* Expand code for an OpenMP sections directive. In pseudo code, we generate | |
6923 | ||
1e8e9920 | 6924 | v = GOMP_sections_start (n); |
6925 | L0: | |
6926 | switch (v) | |
6927 | { | |
6928 | case 0: | |
6929 | goto L2; | |
6930 | case 1: | |
6931 | section 1; | |
6932 | goto L1; | |
6933 | case 2: | |
6934 | ... | |
6935 | case n: | |
6936 | ... | |
1e8e9920 | 6937 | default: |
6938 | abort (); | |
6939 | } | |
6940 | L1: | |
6941 | v = GOMP_sections_next (); | |
6942 | goto L0; | |
6943 | L2: | |
6944 | reduction; | |
6945 | ||
773c5ba7 | 6946 | If this is a combined parallel sections, replace the call to |
79acaae1 | 6947 | GOMP_sections_start with call to GOMP_sections_next. */ |
1e8e9920 | 6948 | |
6949 | static void | |
773c5ba7 | 6950 | expand_omp_sections (struct omp_region *region) |
1e8e9920 | 6951 | { |
f018d957 | 6952 | tree t, u, vin = NULL, vmain, vnext, l2; |
75a70cf9 | 6953 | unsigned len; |
ac6e3339 | 6954 | basic_block entry_bb, l0_bb, l1_bb, l2_bb, default_bb; |
75a70cf9 | 6955 | gimple_stmt_iterator si, switch_si; |
6956 | gimple sections_stmt, stmt, cont; | |
9884aaf8 | 6957 | edge_iterator ei; |
6958 | edge e; | |
61e47ac8 | 6959 | struct omp_region *inner; |
75a70cf9 | 6960 | unsigned i, casei; |
ac6e3339 | 6961 | bool exit_reachable = region->cont != NULL; |
1e8e9920 | 6962 | |
d244d9de | 6963 | gcc_assert (region->exit != NULL); |
61e47ac8 | 6964 | entry_bb = region->entry; |
ac6e3339 | 6965 | l0_bb = single_succ (entry_bb); |
61e47ac8 | 6966 | l1_bb = region->cont; |
ac6e3339 | 6967 | l2_bb = region->exit; |
d244d9de | 6968 | if (single_pred_p (l2_bb) && single_pred (l2_bb) == l0_bb) |
6969 | l2 = gimple_block_label (l2_bb); | |
6970 | else | |
03ed154b | 6971 | { |
d244d9de | 6972 | /* This can happen if there are reductions. */ |
6973 | len = EDGE_COUNT (l0_bb->succs); | |
6974 | gcc_assert (len > 0); | |
6975 | e = EDGE_SUCC (l0_bb, len - 1); | |
6976 | si = gsi_last_bb (e->dest); | |
6977 | l2 = NULL_TREE; | |
6978 | if (gsi_end_p (si) | |
6979 | || gimple_code (gsi_stmt (si)) != GIMPLE_OMP_SECTION) | |
6980 | l2 = gimple_block_label (e->dest); | |
9884aaf8 | 6981 | else |
d244d9de | 6982 | FOR_EACH_EDGE (e, ei, l0_bb->succs) |
6983 | { | |
6984 | si = gsi_last_bb (e->dest); | |
6985 | if (gsi_end_p (si) | |
6986 | || gimple_code (gsi_stmt (si)) != GIMPLE_OMP_SECTION) | |
9884aaf8 | 6987 | { |
d244d9de | 6988 | l2 = gimple_block_label (e->dest); |
6989 | break; | |
9884aaf8 | 6990 | } |
d244d9de | 6991 | } |
03ed154b | 6992 | } |
d244d9de | 6993 | if (exit_reachable) |
6994 | default_bb = create_empty_bb (l1_bb->prev_bb); | |
03ed154b | 6995 | else |
d244d9de | 6996 | default_bb = create_empty_bb (l0_bb); |
773c5ba7 | 6997 | |
6998 | /* We will build a switch() with enough cases for all the | |
75a70cf9 | 6999 | GIMPLE_OMP_SECTION regions, a '0' case to handle the end of more work |
773c5ba7 | 7000 | and a default case to abort if something goes wrong. */ |
ac6e3339 | 7001 | len = EDGE_COUNT (l0_bb->succs); |
75a70cf9 | 7002 | |
f1f41a6c | 7003 | /* Use vec::quick_push on label_vec throughout, since we know the size |
75a70cf9 | 7004 | in advance. */ |
c2078b80 | 7005 | auto_vec<tree> label_vec (len); |
1e8e9920 | 7006 | |
61e47ac8 | 7007 | /* The call to GOMP_sections_start goes in ENTRY_BB, replacing the |
75a70cf9 | 7008 | GIMPLE_OMP_SECTIONS statement. */ |
7009 | si = gsi_last_bb (entry_bb); | |
7010 | sections_stmt = gsi_stmt (si); | |
7011 | gcc_assert (gimple_code (sections_stmt) == GIMPLE_OMP_SECTIONS); | |
7012 | vin = gimple_omp_sections_control (sections_stmt); | |
773c5ba7 | 7013 | if (!is_combined_parallel (region)) |
1e8e9920 | 7014 | { |
773c5ba7 | 7015 | /* If we are not inside a combined parallel+sections region, |
7016 | call GOMP_sections_start. */ | |
39cb6d68 | 7017 | t = build_int_cst (unsigned_type_node, len - 1); |
b9a16870 | 7018 | u = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS_START); |
75a70cf9 | 7019 | stmt = gimple_build_call (u, 1, t); |
1e8e9920 | 7020 | } |
79acaae1 | 7021 | else |
7022 | { | |
7023 | /* Otherwise, call GOMP_sections_next. */ | |
b9a16870 | 7024 | u = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS_NEXT); |
75a70cf9 | 7025 | stmt = gimple_build_call (u, 0); |
79acaae1 | 7026 | } |
75a70cf9 | 7027 | gimple_call_set_lhs (stmt, vin); |
7028 | gsi_insert_after (&si, stmt, GSI_SAME_STMT); | |
7029 | gsi_remove (&si, true); | |
7030 | ||
7031 | /* The switch() statement replacing GIMPLE_OMP_SECTIONS_SWITCH goes in | |
7032 | L0_BB. */ | |
7033 | switch_si = gsi_last_bb (l0_bb); | |
7034 | gcc_assert (gimple_code (gsi_stmt (switch_si)) == GIMPLE_OMP_SECTIONS_SWITCH); | |
79acaae1 | 7035 | if (exit_reachable) |
7036 | { | |
7037 | cont = last_stmt (l1_bb); | |
75a70cf9 | 7038 | gcc_assert (gimple_code (cont) == GIMPLE_OMP_CONTINUE); |
7039 | vmain = gimple_omp_continue_control_use (cont); | |
7040 | vnext = gimple_omp_continue_control_def (cont); | |
79acaae1 | 7041 | } |
7042 | else | |
7043 | { | |
7044 | vmain = vin; | |
7045 | vnext = NULL_TREE; | |
7046 | } | |
1e8e9920 | 7047 | |
d244d9de | 7048 | t = build_case_label (build_int_cst (unsigned_type_node, 0), NULL, l2); |
f1f41a6c | 7049 | label_vec.quick_push (t); |
d244d9de | 7050 | i = 1; |
03ed154b | 7051 | |
75a70cf9 | 7052 | /* Convert each GIMPLE_OMP_SECTION into a CASE_LABEL_EXPR. */ |
ac6e3339 | 7053 | for (inner = region->inner, casei = 1; |
7054 | inner; | |
7055 | inner = inner->next, i++, casei++) | |
1e8e9920 | 7056 | { |
773c5ba7 | 7057 | basic_block s_entry_bb, s_exit_bb; |
7058 | ||
9884aaf8 | 7059 | /* Skip optional reduction region. */ |
75a70cf9 | 7060 | if (inner->type == GIMPLE_OMP_ATOMIC_LOAD) |
9884aaf8 | 7061 | { |
7062 | --i; | |
7063 | --casei; | |
7064 | continue; | |
7065 | } | |
7066 | ||
61e47ac8 | 7067 | s_entry_bb = inner->entry; |
7068 | s_exit_bb = inner->exit; | |
1e8e9920 | 7069 | |
75a70cf9 | 7070 | t = gimple_block_label (s_entry_bb); |
ac6e3339 | 7071 | u = build_int_cst (unsigned_type_node, casei); |
b6e3dd65 | 7072 | u = build_case_label (u, NULL, t); |
f1f41a6c | 7073 | label_vec.quick_push (u); |
61e47ac8 | 7074 | |
75a70cf9 | 7075 | si = gsi_last_bb (s_entry_bb); |
7076 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_SECTION); | |
7077 | gcc_assert (i < len || gimple_omp_section_last_p (gsi_stmt (si))); | |
7078 | gsi_remove (&si, true); | |
61e47ac8 | 7079 | single_succ_edge (s_entry_bb)->flags = EDGE_FALLTHRU; |
03ed154b | 7080 | |
7081 | if (s_exit_bb == NULL) | |
7082 | continue; | |
7083 | ||
75a70cf9 | 7084 | si = gsi_last_bb (s_exit_bb); |
7085 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_RETURN); | |
7086 | gsi_remove (&si, true); | |
03ed154b | 7087 | |
773c5ba7 | 7088 | single_succ_edge (s_exit_bb)->flags = EDGE_FALLTHRU; |
1e8e9920 | 7089 | } |
7090 | ||
773c5ba7 | 7091 | /* Error handling code goes in DEFAULT_BB. */ |
75a70cf9 | 7092 | t = gimple_block_label (default_bb); |
b6e3dd65 | 7093 | u = build_case_label (NULL, NULL, t); |
61e47ac8 | 7094 | make_edge (l0_bb, default_bb, 0); |
f6568ea4 | 7095 | if (current_loops) |
04c2922b | 7096 | add_bb_to_loop (default_bb, current_loops->tree_root); |
1e8e9920 | 7097 | |
49a70175 | 7098 | stmt = gimple_build_switch (vmain, u, label_vec); |
75a70cf9 | 7099 | gsi_insert_after (&switch_si, stmt, GSI_SAME_STMT); |
7100 | gsi_remove (&switch_si, true); | |
75a70cf9 | 7101 | |
7102 | si = gsi_start_bb (default_bb); | |
b9a16870 | 7103 | stmt = gimple_build_call (builtin_decl_explicit (BUILT_IN_TRAP), 0); |
75a70cf9 | 7104 | gsi_insert_after (&si, stmt, GSI_CONTINUE_LINKING); |
773c5ba7 | 7105 | |
ac6e3339 | 7106 | if (exit_reachable) |
03ed154b | 7107 | { |
b9a16870 | 7108 | tree bfn_decl; |
7109 | ||
ac6e3339 | 7110 | /* Code to get the next section goes in L1_BB. */ |
75a70cf9 | 7111 | si = gsi_last_bb (l1_bb); |
7112 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_CONTINUE); | |
1e8e9920 | 7113 | |
b9a16870 | 7114 | bfn_decl = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS_NEXT); |
7115 | stmt = gimple_build_call (bfn_decl, 0); | |
75a70cf9 | 7116 | gimple_call_set_lhs (stmt, vnext); |
7117 | gsi_insert_after (&si, stmt, GSI_SAME_STMT); | |
7118 | gsi_remove (&si, true); | |
773c5ba7 | 7119 | |
ac6e3339 | 7120 | single_succ_edge (l1_bb)->flags = EDGE_FALLTHRU; |
03ed154b | 7121 | } |
773c5ba7 | 7122 | |
d244d9de | 7123 | /* Cleanup function replaces GIMPLE_OMP_RETURN in EXIT_BB. */ |
7124 | si = gsi_last_bb (l2_bb); | |
7125 | if (gimple_omp_return_nowait_p (gsi_stmt (si))) | |
7126 | t = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS_END_NOWAIT); | |
bc7bff74 | 7127 | else if (gimple_omp_return_lhs (gsi_stmt (si))) |
7128 | t = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS_END_CANCEL); | |
d244d9de | 7129 | else |
7130 | t = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS_END); | |
7131 | stmt = gimple_build_call (t, 0); | |
bc7bff74 | 7132 | if (gimple_omp_return_lhs (gsi_stmt (si))) |
7133 | gimple_call_set_lhs (stmt, gimple_omp_return_lhs (gsi_stmt (si))); | |
d244d9de | 7134 | gsi_insert_after (&si, stmt, GSI_SAME_STMT); |
7135 | gsi_remove (&si, true); | |
7136 | ||
79acaae1 | 7137 | set_immediate_dominator (CDI_DOMINATORS, default_bb, l0_bb); |
773c5ba7 | 7138 | } |
1e8e9920 | 7139 | |
1e8e9920 | 7140 | |
61e47ac8 | 7141 | /* Expand code for an OpenMP single directive. We've already expanded |
7142 | much of the code, here we simply place the GOMP_barrier call. */ | |
7143 | ||
7144 | static void | |
7145 | expand_omp_single (struct omp_region *region) | |
7146 | { | |
7147 | basic_block entry_bb, exit_bb; | |
75a70cf9 | 7148 | gimple_stmt_iterator si; |
61e47ac8 | 7149 | |
7150 | entry_bb = region->entry; | |
7151 | exit_bb = region->exit; | |
7152 | ||
75a70cf9 | 7153 | si = gsi_last_bb (entry_bb); |
75a70cf9 | 7154 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_SINGLE); |
7155 | gsi_remove (&si, true); | |
61e47ac8 | 7156 | single_succ_edge (entry_bb)->flags = EDGE_FALLTHRU; |
7157 | ||
75a70cf9 | 7158 | si = gsi_last_bb (exit_bb); |
bc7bff74 | 7159 | if (!gimple_omp_return_nowait_p (gsi_stmt (si))) |
7160 | { | |
7161 | tree t = gimple_omp_return_lhs (gsi_stmt (si)); | |
7162 | gsi_insert_after (&si, build_omp_barrier (t), GSI_SAME_STMT); | |
7163 | } | |
75a70cf9 | 7164 | gsi_remove (&si, true); |
61e47ac8 | 7165 | single_succ_edge (exit_bb)->flags = EDGE_FALLTHRU; |
7166 | } | |
7167 | ||
7168 | ||
7169 | /* Generic expansion for OpenMP synchronization directives: master, | |
7170 | ordered and critical. All we need to do here is remove the entry | |
7171 | and exit markers for REGION. */ | |
773c5ba7 | 7172 | |
7173 | static void | |
7174 | expand_omp_synch (struct omp_region *region) | |
7175 | { | |
7176 | basic_block entry_bb, exit_bb; | |
75a70cf9 | 7177 | gimple_stmt_iterator si; |
773c5ba7 | 7178 | |
61e47ac8 | 7179 | entry_bb = region->entry; |
7180 | exit_bb = region->exit; | |
773c5ba7 | 7181 | |
75a70cf9 | 7182 | si = gsi_last_bb (entry_bb); |
7183 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_SINGLE | |
7184 | || gimple_code (gsi_stmt (si)) == GIMPLE_OMP_MASTER | |
bc7bff74 | 7185 | || gimple_code (gsi_stmt (si)) == GIMPLE_OMP_TASKGROUP |
75a70cf9 | 7186 | || gimple_code (gsi_stmt (si)) == GIMPLE_OMP_ORDERED |
bc7bff74 | 7187 | || gimple_code (gsi_stmt (si)) == GIMPLE_OMP_CRITICAL |
7188 | || gimple_code (gsi_stmt (si)) == GIMPLE_OMP_TEAMS); | |
75a70cf9 | 7189 | gsi_remove (&si, true); |
773c5ba7 | 7190 | single_succ_edge (entry_bb)->flags = EDGE_FALLTHRU; |
7191 | ||
03ed154b | 7192 | if (exit_bb) |
7193 | { | |
75a70cf9 | 7194 | si = gsi_last_bb (exit_bb); |
7195 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_RETURN); | |
7196 | gsi_remove (&si, true); | |
03ed154b | 7197 | single_succ_edge (exit_bb)->flags = EDGE_FALLTHRU; |
7198 | } | |
773c5ba7 | 7199 | } |
1e8e9920 | 7200 | |
2169f33b | 7201 | /* A subroutine of expand_omp_atomic. Attempt to implement the atomic |
7202 | operation as a normal volatile load. */ | |
7203 | ||
7204 | static bool | |
3ec11c49 | 7205 | expand_omp_atomic_load (basic_block load_bb, tree addr, |
7206 | tree loaded_val, int index) | |
2169f33b | 7207 | { |
3ec11c49 | 7208 | enum built_in_function tmpbase; |
7209 | gimple_stmt_iterator gsi; | |
7210 | basic_block store_bb; | |
7211 | location_t loc; | |
7212 | gimple stmt; | |
7213 | tree decl, call, type, itype; | |
7214 | ||
7215 | gsi = gsi_last_bb (load_bb); | |
7216 | stmt = gsi_stmt (gsi); | |
7217 | gcc_assert (gimple_code (stmt) == GIMPLE_OMP_ATOMIC_LOAD); | |
7218 | loc = gimple_location (stmt); | |
7219 | ||
7220 | /* ??? If the target does not implement atomic_load_optab[mode], and mode | |
7221 | is smaller than word size, then expand_atomic_load assumes that the load | |
7222 | is atomic. We could avoid the builtin entirely in this case. */ | |
7223 | ||
7224 | tmpbase = (enum built_in_function) (BUILT_IN_ATOMIC_LOAD_N + index + 1); | |
7225 | decl = builtin_decl_explicit (tmpbase); | |
7226 | if (decl == NULL_TREE) | |
7227 | return false; | |
7228 | ||
7229 | type = TREE_TYPE (loaded_val); | |
7230 | itype = TREE_TYPE (TREE_TYPE (decl)); | |
7231 | ||
7232 | call = build_call_expr_loc (loc, decl, 2, addr, | |
bc7bff74 | 7233 | build_int_cst (NULL, |
7234 | gimple_omp_atomic_seq_cst_p (stmt) | |
7235 | ? MEMMODEL_SEQ_CST | |
7236 | : MEMMODEL_RELAXED)); | |
3ec11c49 | 7237 | if (!useless_type_conversion_p (type, itype)) |
7238 | call = fold_build1_loc (loc, VIEW_CONVERT_EXPR, type, call); | |
7239 | call = build2_loc (loc, MODIFY_EXPR, void_type_node, loaded_val, call); | |
7240 | ||
7241 | force_gimple_operand_gsi (&gsi, call, true, NULL_TREE, true, GSI_SAME_STMT); | |
7242 | gsi_remove (&gsi, true); | |
7243 | ||
7244 | store_bb = single_succ (load_bb); | |
7245 | gsi = gsi_last_bb (store_bb); | |
7246 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_ATOMIC_STORE); | |
7247 | gsi_remove (&gsi, true); | |
7248 | ||
7249 | if (gimple_in_ssa_p (cfun)) | |
7250 | update_ssa (TODO_update_ssa_no_phi); | |
7251 | ||
7252 | return true; | |
2169f33b | 7253 | } |
7254 | ||
7255 | /* A subroutine of expand_omp_atomic. Attempt to implement the atomic | |
7256 | operation as a normal volatile store. */ | |
7257 | ||
7258 | static bool | |
3ec11c49 | 7259 | expand_omp_atomic_store (basic_block load_bb, tree addr, |
7260 | tree loaded_val, tree stored_val, int index) | |
2169f33b | 7261 | { |
3ec11c49 | 7262 | enum built_in_function tmpbase; |
7263 | gimple_stmt_iterator gsi; | |
7264 | basic_block store_bb = single_succ (load_bb); | |
7265 | location_t loc; | |
7266 | gimple stmt; | |
7267 | tree decl, call, type, itype; | |
7268 | enum machine_mode imode; | |
7269 | bool exchange; | |
7270 | ||
7271 | gsi = gsi_last_bb (load_bb); | |
7272 | stmt = gsi_stmt (gsi); | |
7273 | gcc_assert (gimple_code (stmt) == GIMPLE_OMP_ATOMIC_LOAD); | |
7274 | ||
7275 | /* If the load value is needed, then this isn't a store but an exchange. */ | |
7276 | exchange = gimple_omp_atomic_need_value_p (stmt); | |
7277 | ||
7278 | gsi = gsi_last_bb (store_bb); | |
7279 | stmt = gsi_stmt (gsi); | |
7280 | gcc_assert (gimple_code (stmt) == GIMPLE_OMP_ATOMIC_STORE); | |
7281 | loc = gimple_location (stmt); | |
7282 | ||
7283 | /* ??? If the target does not implement atomic_store_optab[mode], and mode | |
7284 | is smaller than word size, then expand_atomic_store assumes that the store | |
7285 | is atomic. We could avoid the builtin entirely in this case. */ | |
7286 | ||
7287 | tmpbase = (exchange ? BUILT_IN_ATOMIC_EXCHANGE_N : BUILT_IN_ATOMIC_STORE_N); | |
7288 | tmpbase = (enum built_in_function) ((int) tmpbase + index + 1); | |
7289 | decl = builtin_decl_explicit (tmpbase); | |
7290 | if (decl == NULL_TREE) | |
7291 | return false; | |
7292 | ||
7293 | type = TREE_TYPE (stored_val); | |
7294 | ||
7295 | /* Dig out the type of the function's second argument. */ | |
7296 | itype = TREE_TYPE (decl); | |
7297 | itype = TYPE_ARG_TYPES (itype); | |
7298 | itype = TREE_CHAIN (itype); | |
7299 | itype = TREE_VALUE (itype); | |
7300 | imode = TYPE_MODE (itype); | |
7301 | ||
7302 | if (exchange && !can_atomic_exchange_p (imode, true)) | |
7303 | return false; | |
7304 | ||
7305 | if (!useless_type_conversion_p (itype, type)) | |
7306 | stored_val = fold_build1_loc (loc, VIEW_CONVERT_EXPR, itype, stored_val); | |
7307 | call = build_call_expr_loc (loc, decl, 3, addr, stored_val, | |
bc7bff74 | 7308 | build_int_cst (NULL, |
7309 | gimple_omp_atomic_seq_cst_p (stmt) | |
7310 | ? MEMMODEL_SEQ_CST | |
7311 | : MEMMODEL_RELAXED)); | |
3ec11c49 | 7312 | if (exchange) |
7313 | { | |
7314 | if (!useless_type_conversion_p (type, itype)) | |
7315 | call = build1_loc (loc, VIEW_CONVERT_EXPR, type, call); | |
7316 | call = build2_loc (loc, MODIFY_EXPR, void_type_node, loaded_val, call); | |
7317 | } | |
7318 | ||
7319 | force_gimple_operand_gsi (&gsi, call, true, NULL_TREE, true, GSI_SAME_STMT); | |
7320 | gsi_remove (&gsi, true); | |
7321 | ||
7322 | /* Remove the GIMPLE_OMP_ATOMIC_LOAD that we verified above. */ | |
7323 | gsi = gsi_last_bb (load_bb); | |
7324 | gsi_remove (&gsi, true); | |
7325 | ||
7326 | if (gimple_in_ssa_p (cfun)) | |
7327 | update_ssa (TODO_update_ssa_no_phi); | |
7328 | ||
7329 | return true; | |
2169f33b | 7330 | } |
7331 | ||
cb7f680b | 7332 | /* A subroutine of expand_omp_atomic. Attempt to implement the atomic |
1cd6e20d | 7333 | operation as a __atomic_fetch_op builtin. INDEX is log2 of the |
cb7f680b | 7334 | size of the data type, and thus usable to find the index of the builtin |
7335 | decl. Returns false if the expression is not of the proper form. */ | |
7336 | ||
7337 | static bool | |
7338 | expand_omp_atomic_fetch_op (basic_block load_bb, | |
7339 | tree addr, tree loaded_val, | |
7340 | tree stored_val, int index) | |
7341 | { | |
b9a16870 | 7342 | enum built_in_function oldbase, newbase, tmpbase; |
cb7f680b | 7343 | tree decl, itype, call; |
2169f33b | 7344 | tree lhs, rhs; |
cb7f680b | 7345 | basic_block store_bb = single_succ (load_bb); |
75a70cf9 | 7346 | gimple_stmt_iterator gsi; |
7347 | gimple stmt; | |
389dd41b | 7348 | location_t loc; |
1cd6e20d | 7349 | enum tree_code code; |
2169f33b | 7350 | bool need_old, need_new; |
1cd6e20d | 7351 | enum machine_mode imode; |
bc7bff74 | 7352 | bool seq_cst; |
cb7f680b | 7353 | |
7354 | /* We expect to find the following sequences: | |
48e1416a | 7355 | |
cb7f680b | 7356 | load_bb: |
75a70cf9 | 7357 | GIMPLE_OMP_ATOMIC_LOAD (tmp, mem) |
cb7f680b | 7358 | |
7359 | store_bb: | |
7360 | val = tmp OP something; (or: something OP tmp) | |
48e1416a | 7361 | GIMPLE_OMP_STORE (val) |
cb7f680b | 7362 | |
48e1416a | 7363 | ???FIXME: Allow a more flexible sequence. |
cb7f680b | 7364 | Perhaps use data flow to pick the statements. |
48e1416a | 7365 | |
cb7f680b | 7366 | */ |
7367 | ||
75a70cf9 | 7368 | gsi = gsi_after_labels (store_bb); |
7369 | stmt = gsi_stmt (gsi); | |
389dd41b | 7370 | loc = gimple_location (stmt); |
75a70cf9 | 7371 | if (!is_gimple_assign (stmt)) |
cb7f680b | 7372 | return false; |
75a70cf9 | 7373 | gsi_next (&gsi); |
7374 | if (gimple_code (gsi_stmt (gsi)) != GIMPLE_OMP_ATOMIC_STORE) | |
cb7f680b | 7375 | return false; |
2169f33b | 7376 | need_new = gimple_omp_atomic_need_value_p (gsi_stmt (gsi)); |
7377 | need_old = gimple_omp_atomic_need_value_p (last_stmt (load_bb)); | |
bc7bff74 | 7378 | seq_cst = gimple_omp_atomic_seq_cst_p (last_stmt (load_bb)); |
2169f33b | 7379 | gcc_checking_assert (!need_old || !need_new); |
cb7f680b | 7380 | |
75a70cf9 | 7381 | if (!operand_equal_p (gimple_assign_lhs (stmt), stored_val, 0)) |
cb7f680b | 7382 | return false; |
7383 | ||
cb7f680b | 7384 | /* Check for one of the supported fetch-op operations. */ |
1cd6e20d | 7385 | code = gimple_assign_rhs_code (stmt); |
7386 | switch (code) | |
cb7f680b | 7387 | { |
7388 | case PLUS_EXPR: | |
7389 | case POINTER_PLUS_EXPR: | |
1cd6e20d | 7390 | oldbase = BUILT_IN_ATOMIC_FETCH_ADD_N; |
7391 | newbase = BUILT_IN_ATOMIC_ADD_FETCH_N; | |
cb7f680b | 7392 | break; |
7393 | case MINUS_EXPR: | |
1cd6e20d | 7394 | oldbase = BUILT_IN_ATOMIC_FETCH_SUB_N; |
7395 | newbase = BUILT_IN_ATOMIC_SUB_FETCH_N; | |
cb7f680b | 7396 | break; |
7397 | case BIT_AND_EXPR: | |
1cd6e20d | 7398 | oldbase = BUILT_IN_ATOMIC_FETCH_AND_N; |
7399 | newbase = BUILT_IN_ATOMIC_AND_FETCH_N; | |
cb7f680b | 7400 | break; |
7401 | case BIT_IOR_EXPR: | |
1cd6e20d | 7402 | oldbase = BUILT_IN_ATOMIC_FETCH_OR_N; |
7403 | newbase = BUILT_IN_ATOMIC_OR_FETCH_N; | |
cb7f680b | 7404 | break; |
7405 | case BIT_XOR_EXPR: | |
1cd6e20d | 7406 | oldbase = BUILT_IN_ATOMIC_FETCH_XOR_N; |
7407 | newbase = BUILT_IN_ATOMIC_XOR_FETCH_N; | |
cb7f680b | 7408 | break; |
7409 | default: | |
7410 | return false; | |
7411 | } | |
1cd6e20d | 7412 | |
cb7f680b | 7413 | /* Make sure the expression is of the proper form. */ |
75a70cf9 | 7414 | if (operand_equal_p (gimple_assign_rhs1 (stmt), loaded_val, 0)) |
7415 | rhs = gimple_assign_rhs2 (stmt); | |
7416 | else if (commutative_tree_code (gimple_assign_rhs_code (stmt)) | |
7417 | && operand_equal_p (gimple_assign_rhs2 (stmt), loaded_val, 0)) | |
7418 | rhs = gimple_assign_rhs1 (stmt); | |
cb7f680b | 7419 | else |
7420 | return false; | |
7421 | ||
b9a16870 | 7422 | tmpbase = ((enum built_in_function) |
7423 | ((need_new ? newbase : oldbase) + index + 1)); | |
7424 | decl = builtin_decl_explicit (tmpbase); | |
0f94f46b | 7425 | if (decl == NULL_TREE) |
7426 | return false; | |
cb7f680b | 7427 | itype = TREE_TYPE (TREE_TYPE (decl)); |
1cd6e20d | 7428 | imode = TYPE_MODE (itype); |
cb7f680b | 7429 | |
1cd6e20d | 7430 | /* We could test all of the various optabs involved, but the fact of the |
7431 | matter is that (with the exception of i486 vs i586 and xadd) all targets | |
7432 | that support any atomic operaton optab also implements compare-and-swap. | |
7433 | Let optabs.c take care of expanding any compare-and-swap loop. */ | |
29139cdc | 7434 | if (!can_compare_and_swap_p (imode, true)) |
cb7f680b | 7435 | return false; |
7436 | ||
75a70cf9 | 7437 | gsi = gsi_last_bb (load_bb); |
7438 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_ATOMIC_LOAD); | |
1cd6e20d | 7439 | |
7440 | /* OpenMP does not imply any barrier-like semantics on its atomic ops. | |
7441 | It only requires that the operation happen atomically. Thus we can | |
7442 | use the RELAXED memory model. */ | |
7443 | call = build_call_expr_loc (loc, decl, 3, addr, | |
7444 | fold_convert_loc (loc, itype, rhs), | |
bc7bff74 | 7445 | build_int_cst (NULL, |
7446 | seq_cst ? MEMMODEL_SEQ_CST | |
7447 | : MEMMODEL_RELAXED)); | |
1cd6e20d | 7448 | |
2169f33b | 7449 | if (need_old || need_new) |
7450 | { | |
7451 | lhs = need_old ? loaded_val : stored_val; | |
7452 | call = fold_convert_loc (loc, TREE_TYPE (lhs), call); | |
7453 | call = build2_loc (loc, MODIFY_EXPR, void_type_node, lhs, call); | |
7454 | } | |
7455 | else | |
7456 | call = fold_convert_loc (loc, void_type_node, call); | |
75a70cf9 | 7457 | force_gimple_operand_gsi (&gsi, call, true, NULL_TREE, true, GSI_SAME_STMT); |
7458 | gsi_remove (&gsi, true); | |
cb7f680b | 7459 | |
75a70cf9 | 7460 | gsi = gsi_last_bb (store_bb); |
7461 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_ATOMIC_STORE); | |
7462 | gsi_remove (&gsi, true); | |
7463 | gsi = gsi_last_bb (store_bb); | |
7464 | gsi_remove (&gsi, true); | |
cb7f680b | 7465 | |
7466 | if (gimple_in_ssa_p (cfun)) | |
7467 | update_ssa (TODO_update_ssa_no_phi); | |
7468 | ||
7469 | return true; | |
7470 | } | |
7471 | ||
7472 | /* A subroutine of expand_omp_atomic. Implement the atomic operation as: | |
7473 | ||
7474 | oldval = *addr; | |
7475 | repeat: | |
7476 | newval = rhs; // with oldval replacing *addr in rhs | |
7477 | oldval = __sync_val_compare_and_swap (addr, oldval, newval); | |
7478 | if (oldval != newval) | |
7479 | goto repeat; | |
7480 | ||
7481 | INDEX is log2 of the size of the data type, and thus usable to find the | |
7482 | index of the builtin decl. */ | |
7483 | ||
7484 | static bool | |
7485 | expand_omp_atomic_pipeline (basic_block load_bb, basic_block store_bb, | |
7486 | tree addr, tree loaded_val, tree stored_val, | |
7487 | int index) | |
7488 | { | |
790368c5 | 7489 | tree loadedi, storedi, initial, new_storedi, old_vali; |
cb7f680b | 7490 | tree type, itype, cmpxchg, iaddr; |
75a70cf9 | 7491 | gimple_stmt_iterator si; |
cb7f680b | 7492 | basic_block loop_header = single_succ (load_bb); |
75a70cf9 | 7493 | gimple phi, stmt; |
cb7f680b | 7494 | edge e; |
b9a16870 | 7495 | enum built_in_function fncode; |
cb7f680b | 7496 | |
1cd6e20d | 7497 | /* ??? We need a non-pointer interface to __atomic_compare_exchange in |
7498 | order to use the RELAXED memory model effectively. */ | |
b9a16870 | 7499 | fncode = (enum built_in_function)((int)BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_N |
7500 | + index + 1); | |
7501 | cmpxchg = builtin_decl_explicit (fncode); | |
0f94f46b | 7502 | if (cmpxchg == NULL_TREE) |
7503 | return false; | |
cb7f680b | 7504 | type = TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (addr))); |
7505 | itype = TREE_TYPE (TREE_TYPE (cmpxchg)); | |
7506 | ||
29139cdc | 7507 | if (!can_compare_and_swap_p (TYPE_MODE (itype), true)) |
cb7f680b | 7508 | return false; |
7509 | ||
75a70cf9 | 7510 | /* Load the initial value, replacing the GIMPLE_OMP_ATOMIC_LOAD. */ |
7511 | si = gsi_last_bb (load_bb); | |
7512 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_ATOMIC_LOAD); | |
7513 | ||
790368c5 | 7514 | /* For floating-point values, we'll need to view-convert them to integers |
7515 | so that we can perform the atomic compare and swap. Simplify the | |
7516 | following code by always setting up the "i"ntegral variables. */ | |
7517 | if (!INTEGRAL_TYPE_P (type) && !POINTER_TYPE_P (type)) | |
7518 | { | |
75a70cf9 | 7519 | tree iaddr_val; |
7520 | ||
072f7ab1 | 7521 | iaddr = create_tmp_reg (build_pointer_type_for_mode (itype, ptr_mode, |
7522 | true), NULL); | |
75a70cf9 | 7523 | iaddr_val |
7524 | = force_gimple_operand_gsi (&si, | |
7525 | fold_convert (TREE_TYPE (iaddr), addr), | |
7526 | false, NULL_TREE, true, GSI_SAME_STMT); | |
7527 | stmt = gimple_build_assign (iaddr, iaddr_val); | |
7528 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); | |
790368c5 | 7529 | loadedi = create_tmp_var (itype, NULL); |
7530 | if (gimple_in_ssa_p (cfun)) | |
b03e5397 | 7531 | loadedi = make_ssa_name (loadedi, NULL); |
790368c5 | 7532 | } |
7533 | else | |
7534 | { | |
7535 | iaddr = addr; | |
7536 | loadedi = loaded_val; | |
7537 | } | |
75a70cf9 | 7538 | |
2ed72821 | 7539 | fncode = (enum built_in_function) (BUILT_IN_ATOMIC_LOAD_N + index + 1); |
7540 | tree loaddecl = builtin_decl_explicit (fncode); | |
7541 | if (loaddecl) | |
7542 | initial | |
7543 | = fold_convert (TREE_TYPE (TREE_TYPE (iaddr)), | |
7544 | build_call_expr (loaddecl, 2, iaddr, | |
7545 | build_int_cst (NULL_TREE, | |
7546 | MEMMODEL_RELAXED))); | |
7547 | else | |
7548 | initial = build2 (MEM_REF, TREE_TYPE (TREE_TYPE (iaddr)), iaddr, | |
7549 | build_int_cst (TREE_TYPE (iaddr), 0)); | |
7550 | ||
182cf5a9 | 7551 | initial |
2ed72821 | 7552 | = force_gimple_operand_gsi (&si, initial, true, NULL_TREE, true, |
7553 | GSI_SAME_STMT); | |
790368c5 | 7554 | |
7555 | /* Move the value to the LOADEDI temporary. */ | |
cb7f680b | 7556 | if (gimple_in_ssa_p (cfun)) |
7557 | { | |
75a70cf9 | 7558 | gcc_assert (gimple_seq_empty_p (phi_nodes (loop_header))); |
790368c5 | 7559 | phi = create_phi_node (loadedi, loop_header); |
cb7f680b | 7560 | SET_USE (PHI_ARG_DEF_PTR_FROM_EDGE (phi, single_succ_edge (load_bb)), |
7561 | initial); | |
7562 | } | |
7563 | else | |
75a70cf9 | 7564 | gsi_insert_before (&si, |
7565 | gimple_build_assign (loadedi, initial), | |
7566 | GSI_SAME_STMT); | |
790368c5 | 7567 | if (loadedi != loaded_val) |
7568 | { | |
75a70cf9 | 7569 | gimple_stmt_iterator gsi2; |
7570 | tree x; | |
790368c5 | 7571 | |
7572 | x = build1 (VIEW_CONVERT_EXPR, type, loadedi); | |
75a70cf9 | 7573 | gsi2 = gsi_start_bb (loop_header); |
790368c5 | 7574 | if (gimple_in_ssa_p (cfun)) |
7575 | { | |
75a70cf9 | 7576 | gimple stmt; |
7577 | x = force_gimple_operand_gsi (&gsi2, x, true, NULL_TREE, | |
7578 | true, GSI_SAME_STMT); | |
7579 | stmt = gimple_build_assign (loaded_val, x); | |
7580 | gsi_insert_before (&gsi2, stmt, GSI_SAME_STMT); | |
790368c5 | 7581 | } |
7582 | else | |
7583 | { | |
75a70cf9 | 7584 | x = build2 (MODIFY_EXPR, TREE_TYPE (loaded_val), loaded_val, x); |
7585 | force_gimple_operand_gsi (&gsi2, x, true, NULL_TREE, | |
7586 | true, GSI_SAME_STMT); | |
790368c5 | 7587 | } |
7588 | } | |
75a70cf9 | 7589 | gsi_remove (&si, true); |
cb7f680b | 7590 | |
75a70cf9 | 7591 | si = gsi_last_bb (store_bb); |
7592 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_ATOMIC_STORE); | |
cb7f680b | 7593 | |
790368c5 | 7594 | if (iaddr == addr) |
7595 | storedi = stored_val; | |
cb7f680b | 7596 | else |
790368c5 | 7597 | storedi = |
75a70cf9 | 7598 | force_gimple_operand_gsi (&si, |
790368c5 | 7599 | build1 (VIEW_CONVERT_EXPR, itype, |
7600 | stored_val), true, NULL_TREE, true, | |
75a70cf9 | 7601 | GSI_SAME_STMT); |
cb7f680b | 7602 | |
7603 | /* Build the compare&swap statement. */ | |
7604 | new_storedi = build_call_expr (cmpxchg, 3, iaddr, loadedi, storedi); | |
75a70cf9 | 7605 | new_storedi = force_gimple_operand_gsi (&si, |
87f9ffa4 | 7606 | fold_convert (TREE_TYPE (loadedi), |
7607 | new_storedi), | |
cb7f680b | 7608 | true, NULL_TREE, |
75a70cf9 | 7609 | true, GSI_SAME_STMT); |
cb7f680b | 7610 | |
7611 | if (gimple_in_ssa_p (cfun)) | |
7612 | old_vali = loadedi; | |
7613 | else | |
7614 | { | |
87f9ffa4 | 7615 | old_vali = create_tmp_var (TREE_TYPE (loadedi), NULL); |
75a70cf9 | 7616 | stmt = gimple_build_assign (old_vali, loadedi); |
7617 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); | |
cb7f680b | 7618 | |
75a70cf9 | 7619 | stmt = gimple_build_assign (loadedi, new_storedi); |
7620 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); | |
cb7f680b | 7621 | } |
7622 | ||
7623 | /* Note that we always perform the comparison as an integer, even for | |
48e1416a | 7624 | floating point. This allows the atomic operation to properly |
cb7f680b | 7625 | succeed even with NaNs and -0.0. */ |
75a70cf9 | 7626 | stmt = gimple_build_cond_empty |
7627 | (build2 (NE_EXPR, boolean_type_node, | |
7628 | new_storedi, old_vali)); | |
7629 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); | |
cb7f680b | 7630 | |
7631 | /* Update cfg. */ | |
7632 | e = single_succ_edge (store_bb); | |
7633 | e->flags &= ~EDGE_FALLTHRU; | |
7634 | e->flags |= EDGE_FALSE_VALUE; | |
7635 | ||
7636 | e = make_edge (store_bb, loop_header, EDGE_TRUE_VALUE); | |
7637 | ||
790368c5 | 7638 | /* Copy the new value to loadedi (we already did that before the condition |
cb7f680b | 7639 | if we are not in SSA). */ |
7640 | if (gimple_in_ssa_p (cfun)) | |
7641 | { | |
75a70cf9 | 7642 | phi = gimple_seq_first_stmt (phi_nodes (loop_header)); |
790368c5 | 7643 | SET_USE (PHI_ARG_DEF_PTR_FROM_EDGE (phi, e), new_storedi); |
cb7f680b | 7644 | } |
7645 | ||
75a70cf9 | 7646 | /* Remove GIMPLE_OMP_ATOMIC_STORE. */ |
7647 | gsi_remove (&si, true); | |
cb7f680b | 7648 | |
04c2922b | 7649 | struct loop *loop = alloc_loop (); |
7650 | loop->header = loop_header; | |
5f037457 | 7651 | loop->latch = store_bb; |
04c2922b | 7652 | add_loop (loop, loop_header->loop_father); |
7653 | ||
cb7f680b | 7654 | if (gimple_in_ssa_p (cfun)) |
7655 | update_ssa (TODO_update_ssa_no_phi); | |
7656 | ||
7657 | return true; | |
7658 | } | |
7659 | ||
7660 | /* A subroutine of expand_omp_atomic. Implement the atomic operation as: | |
7661 | ||
7662 | GOMP_atomic_start (); | |
7663 | *addr = rhs; | |
7664 | GOMP_atomic_end (); | |
7665 | ||
7666 | The result is not globally atomic, but works so long as all parallel | |
7667 | references are within #pragma omp atomic directives. According to | |
7668 | responses received from omp@openmp.org, appears to be within spec. | |
7669 | Which makes sense, since that's how several other compilers handle | |
48e1416a | 7670 | this situation as well. |
75a70cf9 | 7671 | LOADED_VAL and ADDR are the operands of GIMPLE_OMP_ATOMIC_LOAD we're |
7672 | expanding. STORED_VAL is the operand of the matching | |
7673 | GIMPLE_OMP_ATOMIC_STORE. | |
cb7f680b | 7674 | |
48e1416a | 7675 | We replace |
7676 | GIMPLE_OMP_ATOMIC_LOAD (loaded_val, addr) with | |
cb7f680b | 7677 | loaded_val = *addr; |
7678 | ||
7679 | and replace | |
3ec11c49 | 7680 | GIMPLE_OMP_ATOMIC_STORE (stored_val) with |
48e1416a | 7681 | *addr = stored_val; |
cb7f680b | 7682 | */ |
7683 | ||
7684 | static bool | |
7685 | expand_omp_atomic_mutex (basic_block load_bb, basic_block store_bb, | |
7686 | tree addr, tree loaded_val, tree stored_val) | |
7687 | { | |
75a70cf9 | 7688 | gimple_stmt_iterator si; |
7689 | gimple stmt; | |
cb7f680b | 7690 | tree t; |
7691 | ||
75a70cf9 | 7692 | si = gsi_last_bb (load_bb); |
7693 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_ATOMIC_LOAD); | |
cb7f680b | 7694 | |
b9a16870 | 7695 | t = builtin_decl_explicit (BUILT_IN_GOMP_ATOMIC_START); |
414c3a2c | 7696 | t = build_call_expr (t, 0); |
75a70cf9 | 7697 | force_gimple_operand_gsi (&si, t, true, NULL_TREE, true, GSI_SAME_STMT); |
cb7f680b | 7698 | |
182cf5a9 | 7699 | stmt = gimple_build_assign (loaded_val, build_simple_mem_ref (addr)); |
75a70cf9 | 7700 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); |
7701 | gsi_remove (&si, true); | |
cb7f680b | 7702 | |
75a70cf9 | 7703 | si = gsi_last_bb (store_bb); |
7704 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_ATOMIC_STORE); | |
cb7f680b | 7705 | |
182cf5a9 | 7706 | stmt = gimple_build_assign (build_simple_mem_ref (unshare_expr (addr)), |
7707 | stored_val); | |
75a70cf9 | 7708 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); |
cb7f680b | 7709 | |
b9a16870 | 7710 | t = builtin_decl_explicit (BUILT_IN_GOMP_ATOMIC_END); |
414c3a2c | 7711 | t = build_call_expr (t, 0); |
75a70cf9 | 7712 | force_gimple_operand_gsi (&si, t, true, NULL_TREE, true, GSI_SAME_STMT); |
7713 | gsi_remove (&si, true); | |
cb7f680b | 7714 | |
7715 | if (gimple_in_ssa_p (cfun)) | |
7716 | update_ssa (TODO_update_ssa_no_phi); | |
7717 | return true; | |
7718 | } | |
7719 | ||
48e1416a | 7720 | /* Expand an GIMPLE_OMP_ATOMIC statement. We try to expand |
7721 | using expand_omp_atomic_fetch_op. If it failed, we try to | |
cb7f680b | 7722 | call expand_omp_atomic_pipeline, and if it fails too, the |
7723 | ultimate fallback is wrapping the operation in a mutex | |
48e1416a | 7724 | (expand_omp_atomic_mutex). REGION is the atomic region built |
7725 | by build_omp_regions_1(). */ | |
cb7f680b | 7726 | |
7727 | static void | |
7728 | expand_omp_atomic (struct omp_region *region) | |
7729 | { | |
7730 | basic_block load_bb = region->entry, store_bb = region->exit; | |
75a70cf9 | 7731 | gimple load = last_stmt (load_bb), store = last_stmt (store_bb); |
7732 | tree loaded_val = gimple_omp_atomic_load_lhs (load); | |
7733 | tree addr = gimple_omp_atomic_load_rhs (load); | |
7734 | tree stored_val = gimple_omp_atomic_store_val (store); | |
cb7f680b | 7735 | tree type = TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (addr))); |
7736 | HOST_WIDE_INT index; | |
7737 | ||
7738 | /* Make sure the type is one of the supported sizes. */ | |
6a0712d4 | 7739 | index = tree_to_uhwi (TYPE_SIZE_UNIT (type)); |
cb7f680b | 7740 | index = exact_log2 (index); |
7741 | if (index >= 0 && index <= 4) | |
7742 | { | |
7743 | unsigned int align = TYPE_ALIGN_UNIT (type); | |
7744 | ||
7745 | /* __sync builtins require strict data alignment. */ | |
dcf7024c | 7746 | if (exact_log2 (align) >= index) |
cb7f680b | 7747 | { |
3ec11c49 | 7748 | /* Atomic load. */ |
2169f33b | 7749 | if (loaded_val == stored_val |
7750 | && (GET_MODE_CLASS (TYPE_MODE (type)) == MODE_INT | |
7751 | || GET_MODE_CLASS (TYPE_MODE (type)) == MODE_FLOAT) | |
7752 | && GET_MODE_BITSIZE (TYPE_MODE (type)) <= BITS_PER_WORD | |
3ec11c49 | 7753 | && expand_omp_atomic_load (load_bb, addr, loaded_val, index)) |
2169f33b | 7754 | return; |
7755 | ||
3ec11c49 | 7756 | /* Atomic store. */ |
2169f33b | 7757 | if ((GET_MODE_CLASS (TYPE_MODE (type)) == MODE_INT |
7758 | || GET_MODE_CLASS (TYPE_MODE (type)) == MODE_FLOAT) | |
7759 | && GET_MODE_BITSIZE (TYPE_MODE (type)) <= BITS_PER_WORD | |
7760 | && store_bb == single_succ (load_bb) | |
7761 | && first_stmt (store_bb) == store | |
3ec11c49 | 7762 | && expand_omp_atomic_store (load_bb, addr, loaded_val, |
7763 | stored_val, index)) | |
2169f33b | 7764 | return; |
7765 | ||
cb7f680b | 7766 | /* When possible, use specialized atomic update functions. */ |
7767 | if ((INTEGRAL_TYPE_P (type) || POINTER_TYPE_P (type)) | |
3ec11c49 | 7768 | && store_bb == single_succ (load_bb) |
7769 | && expand_omp_atomic_fetch_op (load_bb, addr, | |
7770 | loaded_val, stored_val, index)) | |
7771 | return; | |
cb7f680b | 7772 | |
7773 | /* If we don't have specialized __sync builtins, try and implement | |
7774 | as a compare and swap loop. */ | |
7775 | if (expand_omp_atomic_pipeline (load_bb, store_bb, addr, | |
7776 | loaded_val, stored_val, index)) | |
7777 | return; | |
7778 | } | |
7779 | } | |
7780 | ||
7781 | /* The ultimate fallback is wrapping the operation in a mutex. */ | |
7782 | expand_omp_atomic_mutex (load_bb, store_bb, addr, loaded_val, stored_val); | |
7783 | } | |
7784 | ||
1e8e9920 | 7785 | |
bc7bff74 | 7786 | /* Expand the OpenMP target{, data, update} directive starting at REGION. */ |
7787 | ||
7788 | static void | |
7789 | expand_omp_target (struct omp_region *region) | |
7790 | { | |
7791 | basic_block entry_bb, exit_bb, new_bb; | |
7792 | struct function *child_cfun = NULL; | |
7793 | tree child_fn = NULL_TREE, block, t; | |
7794 | gimple_stmt_iterator gsi; | |
7795 | gimple entry_stmt, stmt; | |
7796 | edge e; | |
7797 | ||
7798 | entry_stmt = last_stmt (region->entry); | |
7799 | new_bb = region->entry; | |
7800 | int kind = gimple_omp_target_kind (entry_stmt); | |
7801 | if (kind == GF_OMP_TARGET_KIND_REGION) | |
7802 | { | |
7803 | child_fn = gimple_omp_target_child_fn (entry_stmt); | |
7804 | child_cfun = DECL_STRUCT_FUNCTION (child_fn); | |
7805 | } | |
7806 | ||
7807 | entry_bb = region->entry; | |
7808 | exit_bb = region->exit; | |
7809 | ||
7810 | if (kind == GF_OMP_TARGET_KIND_REGION) | |
7811 | { | |
7812 | unsigned srcidx, dstidx, num; | |
7813 | ||
7814 | /* If the target region needs data sent from the parent | |
7815 | function, then the very first statement (except possible | |
7816 | tree profile counter updates) of the parallel body | |
7817 | is a copy assignment .OMP_DATA_I = &.OMP_DATA_O. Since | |
7818 | &.OMP_DATA_O is passed as an argument to the child function, | |
7819 | we need to replace it with the argument as seen by the child | |
7820 | function. | |
7821 | ||
7822 | In most cases, this will end up being the identity assignment | |
7823 | .OMP_DATA_I = .OMP_DATA_I. However, if the parallel body had | |
7824 | a function call that has been inlined, the original PARM_DECL | |
7825 | .OMP_DATA_I may have been converted into a different local | |
7826 | variable. In which case, we need to keep the assignment. */ | |
7827 | if (gimple_omp_target_data_arg (entry_stmt)) | |
7828 | { | |
7829 | basic_block entry_succ_bb = single_succ (entry_bb); | |
7830 | gimple_stmt_iterator gsi; | |
7831 | tree arg; | |
7832 | gimple tgtcopy_stmt = NULL; | |
7833 | tree sender | |
7834 | = TREE_VEC_ELT (gimple_omp_target_data_arg (entry_stmt), 0); | |
7835 | ||
7836 | for (gsi = gsi_start_bb (entry_succ_bb); ; gsi_next (&gsi)) | |
7837 | { | |
7838 | gcc_assert (!gsi_end_p (gsi)); | |
7839 | stmt = gsi_stmt (gsi); | |
7840 | if (gimple_code (stmt) != GIMPLE_ASSIGN) | |
7841 | continue; | |
7842 | ||
7843 | if (gimple_num_ops (stmt) == 2) | |
7844 | { | |
7845 | tree arg = gimple_assign_rhs1 (stmt); | |
7846 | ||
7847 | /* We're ignoring the subcode because we're | |
7848 | effectively doing a STRIP_NOPS. */ | |
7849 | ||
7850 | if (TREE_CODE (arg) == ADDR_EXPR | |
7851 | && TREE_OPERAND (arg, 0) == sender) | |
7852 | { | |
7853 | tgtcopy_stmt = stmt; | |
7854 | break; | |
7855 | } | |
7856 | } | |
7857 | } | |
7858 | ||
7859 | gcc_assert (tgtcopy_stmt != NULL); | |
7860 | arg = DECL_ARGUMENTS (child_fn); | |
7861 | ||
7862 | gcc_assert (gimple_assign_lhs (tgtcopy_stmt) == arg); | |
7863 | gsi_remove (&gsi, true); | |
7864 | } | |
7865 | ||
7866 | /* Declare local variables needed in CHILD_CFUN. */ | |
7867 | block = DECL_INITIAL (child_fn); | |
7868 | BLOCK_VARS (block) = vec2chain (child_cfun->local_decls); | |
7869 | /* The gimplifier could record temporaries in target block | |
7870 | rather than in containing function's local_decls chain, | |
7871 | which would mean cgraph missed finalizing them. Do it now. */ | |
7872 | for (t = BLOCK_VARS (block); t; t = DECL_CHAIN (t)) | |
7873 | if (TREE_CODE (t) == VAR_DECL | |
7874 | && TREE_STATIC (t) | |
7875 | && !DECL_EXTERNAL (t)) | |
7876 | varpool_finalize_decl (t); | |
7877 | DECL_SAVED_TREE (child_fn) = NULL; | |
7878 | /* We'll create a CFG for child_fn, so no gimple body is needed. */ | |
7879 | gimple_set_body (child_fn, NULL); | |
7880 | TREE_USED (block) = 1; | |
7881 | ||
7882 | /* Reset DECL_CONTEXT on function arguments. */ | |
7883 | for (t = DECL_ARGUMENTS (child_fn); t; t = DECL_CHAIN (t)) | |
7884 | DECL_CONTEXT (t) = child_fn; | |
7885 | ||
7886 | /* Split ENTRY_BB at GIMPLE_OMP_TARGET, | |
7887 | so that it can be moved to the child function. */ | |
7888 | gsi = gsi_last_bb (entry_bb); | |
7889 | stmt = gsi_stmt (gsi); | |
7890 | gcc_assert (stmt && gimple_code (stmt) == GIMPLE_OMP_TARGET | |
7891 | && gimple_omp_target_kind (stmt) | |
7892 | == GF_OMP_TARGET_KIND_REGION); | |
7893 | gsi_remove (&gsi, true); | |
7894 | e = split_block (entry_bb, stmt); | |
7895 | entry_bb = e->dest; | |
7896 | single_succ_edge (entry_bb)->flags = EDGE_FALLTHRU; | |
7897 | ||
7898 | /* Convert GIMPLE_OMP_RETURN into a RETURN_EXPR. */ | |
7899 | if (exit_bb) | |
7900 | { | |
7901 | gsi = gsi_last_bb (exit_bb); | |
7902 | gcc_assert (!gsi_end_p (gsi) | |
7903 | && gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_RETURN); | |
7904 | stmt = gimple_build_return (NULL); | |
7905 | gsi_insert_after (&gsi, stmt, GSI_SAME_STMT); | |
7906 | gsi_remove (&gsi, true); | |
7907 | } | |
7908 | ||
7909 | /* Move the target region into CHILD_CFUN. */ | |
7910 | ||
7911 | block = gimple_block (entry_stmt); | |
7912 | ||
7913 | new_bb = move_sese_region_to_fn (child_cfun, entry_bb, exit_bb, block); | |
7914 | if (exit_bb) | |
7915 | single_succ_edge (new_bb)->flags = EDGE_FALLTHRU; | |
7916 | /* When the OMP expansion process cannot guarantee an up-to-date | |
7917 | loop tree arrange for the child function to fixup loops. */ | |
7918 | if (loops_state_satisfies_p (LOOPS_NEED_FIXUP)) | |
7919 | child_cfun->x_current_loops->state |= LOOPS_NEED_FIXUP; | |
7920 | ||
7921 | /* Remove non-local VAR_DECLs from child_cfun->local_decls list. */ | |
7922 | num = vec_safe_length (child_cfun->local_decls); | |
7923 | for (srcidx = 0, dstidx = 0; srcidx < num; srcidx++) | |
7924 | { | |
7925 | t = (*child_cfun->local_decls)[srcidx]; | |
7926 | if (DECL_CONTEXT (t) == cfun->decl) | |
7927 | continue; | |
7928 | if (srcidx != dstidx) | |
7929 | (*child_cfun->local_decls)[dstidx] = t; | |
7930 | dstidx++; | |
7931 | } | |
7932 | if (dstidx != num) | |
7933 | vec_safe_truncate (child_cfun->local_decls, dstidx); | |
7934 | ||
7935 | /* Inform the callgraph about the new function. */ | |
7936 | DECL_STRUCT_FUNCTION (child_fn)->curr_properties = cfun->curr_properties; | |
7937 | cgraph_add_new_function (child_fn, true); | |
7938 | ||
7939 | /* Fix the callgraph edges for child_cfun. Those for cfun will be | |
7940 | fixed in a following pass. */ | |
7941 | push_cfun (child_cfun); | |
7942 | rebuild_cgraph_edges (); | |
7943 | ||
7944 | /* Some EH regions might become dead, see PR34608. If | |
7945 | pass_cleanup_cfg isn't the first pass to happen with the | |
7946 | new child, these dead EH edges might cause problems. | |
7947 | Clean them up now. */ | |
7948 | if (flag_exceptions) | |
7949 | { | |
7950 | basic_block bb; | |
7951 | bool changed = false; | |
7952 | ||
fc00614f | 7953 | FOR_EACH_BB_FN (bb, cfun) |
bc7bff74 | 7954 | changed |= gimple_purge_dead_eh_edges (bb); |
7955 | if (changed) | |
7956 | cleanup_tree_cfg (); | |
7957 | } | |
7958 | pop_cfun (); | |
7959 | } | |
7960 | ||
7961 | /* Emit a library call to launch the target region, or do data | |
7962 | transfers. */ | |
7963 | tree t1, t2, t3, t4, device, cond, c, clauses; | |
7964 | enum built_in_function start_ix; | |
7965 | location_t clause_loc; | |
7966 | ||
7967 | clauses = gimple_omp_target_clauses (entry_stmt); | |
7968 | ||
7969 | if (kind == GF_OMP_TARGET_KIND_REGION) | |
7970 | start_ix = BUILT_IN_GOMP_TARGET; | |
7971 | else if (kind == GF_OMP_TARGET_KIND_DATA) | |
7972 | start_ix = BUILT_IN_GOMP_TARGET_DATA; | |
7973 | else | |
7974 | start_ix = BUILT_IN_GOMP_TARGET_UPDATE; | |
7975 | ||
7976 | /* By default, the value of DEVICE is -1 (let runtime library choose) | |
7977 | and there is no conditional. */ | |
7978 | cond = NULL_TREE; | |
7979 | device = build_int_cst (integer_type_node, -1); | |
7980 | ||
7981 | c = find_omp_clause (clauses, OMP_CLAUSE_IF); | |
7982 | if (c) | |
7983 | cond = OMP_CLAUSE_IF_EXPR (c); | |
7984 | ||
7985 | c = find_omp_clause (clauses, OMP_CLAUSE_DEVICE); | |
7986 | if (c) | |
7987 | { | |
7988 | device = OMP_CLAUSE_DEVICE_ID (c); | |
7989 | clause_loc = OMP_CLAUSE_LOCATION (c); | |
7990 | } | |
7991 | else | |
7992 | clause_loc = gimple_location (entry_stmt); | |
7993 | ||
7994 | /* Ensure 'device' is of the correct type. */ | |
7995 | device = fold_convert_loc (clause_loc, integer_type_node, device); | |
7996 | ||
7997 | /* If we found the clause 'if (cond)', build | |
7998 | (cond ? device : -2). */ | |
7999 | if (cond) | |
8000 | { | |
8001 | cond = gimple_boolify (cond); | |
8002 | ||
8003 | basic_block cond_bb, then_bb, else_bb; | |
8004 | edge e; | |
8005 | tree tmp_var; | |
8006 | ||
8007 | tmp_var = create_tmp_var (TREE_TYPE (device), NULL); | |
8008 | if (kind != GF_OMP_TARGET_KIND_REGION) | |
8009 | { | |
8010 | gsi = gsi_last_bb (new_bb); | |
8011 | gsi_prev (&gsi); | |
8012 | e = split_block (new_bb, gsi_stmt (gsi)); | |
8013 | } | |
8014 | else | |
8015 | e = split_block (new_bb, NULL); | |
8016 | cond_bb = e->src; | |
8017 | new_bb = e->dest; | |
8018 | remove_edge (e); | |
8019 | ||
8020 | then_bb = create_empty_bb (cond_bb); | |
8021 | else_bb = create_empty_bb (then_bb); | |
8022 | set_immediate_dominator (CDI_DOMINATORS, then_bb, cond_bb); | |
8023 | set_immediate_dominator (CDI_DOMINATORS, else_bb, cond_bb); | |
8024 | ||
8025 | stmt = gimple_build_cond_empty (cond); | |
8026 | gsi = gsi_last_bb (cond_bb); | |
8027 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
8028 | ||
8029 | gsi = gsi_start_bb (then_bb); | |
8030 | stmt = gimple_build_assign (tmp_var, device); | |
8031 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
8032 | ||
8033 | gsi = gsi_start_bb (else_bb); | |
8034 | stmt = gimple_build_assign (tmp_var, | |
8035 | build_int_cst (integer_type_node, -2)); | |
8036 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
8037 | ||
8038 | make_edge (cond_bb, then_bb, EDGE_TRUE_VALUE); | |
8039 | make_edge (cond_bb, else_bb, EDGE_FALSE_VALUE); | |
8040 | if (current_loops) | |
8041 | { | |
8042 | add_bb_to_loop (then_bb, cond_bb->loop_father); | |
8043 | add_bb_to_loop (else_bb, cond_bb->loop_father); | |
8044 | } | |
8045 | make_edge (then_bb, new_bb, EDGE_FALLTHRU); | |
8046 | make_edge (else_bb, new_bb, EDGE_FALLTHRU); | |
8047 | ||
8048 | device = tmp_var; | |
8049 | } | |
8050 | ||
8051 | gsi = gsi_last_bb (new_bb); | |
8052 | t = gimple_omp_target_data_arg (entry_stmt); | |
8053 | if (t == NULL) | |
8054 | { | |
8055 | t1 = size_zero_node; | |
8056 | t2 = build_zero_cst (ptr_type_node); | |
8057 | t3 = t2; | |
8058 | t4 = t2; | |
8059 | } | |
8060 | else | |
8061 | { | |
8062 | t1 = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (TREE_VEC_ELT (t, 1)))); | |
8063 | t1 = size_binop (PLUS_EXPR, t1, size_int (1)); | |
8064 | t2 = build_fold_addr_expr (TREE_VEC_ELT (t, 0)); | |
8065 | t3 = build_fold_addr_expr (TREE_VEC_ELT (t, 1)); | |
8066 | t4 = build_fold_addr_expr (TREE_VEC_ELT (t, 2)); | |
8067 | } | |
8068 | ||
8069 | gimple g; | |
8070 | /* FIXME: This will be address of | |
8071 | extern char __OPENMP_TARGET__[] __attribute__((visibility ("hidden"))) | |
8072 | symbol, as soon as the linker plugin is able to create it for us. */ | |
8073 | tree openmp_target = build_zero_cst (ptr_type_node); | |
8074 | if (kind == GF_OMP_TARGET_KIND_REGION) | |
8075 | { | |
8076 | tree fnaddr = build_fold_addr_expr (child_fn); | |
8077 | g = gimple_build_call (builtin_decl_explicit (start_ix), 7, | |
8078 | device, fnaddr, openmp_target, t1, t2, t3, t4); | |
8079 | } | |
8080 | else | |
8081 | g = gimple_build_call (builtin_decl_explicit (start_ix), 6, | |
8082 | device, openmp_target, t1, t2, t3, t4); | |
8083 | gimple_set_location (g, gimple_location (entry_stmt)); | |
8084 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
8085 | if (kind != GF_OMP_TARGET_KIND_REGION) | |
8086 | { | |
8087 | g = gsi_stmt (gsi); | |
8088 | gcc_assert (g && gimple_code (g) == GIMPLE_OMP_TARGET); | |
8089 | gsi_remove (&gsi, true); | |
8090 | } | |
8091 | if (kind == GF_OMP_TARGET_KIND_DATA && region->exit) | |
8092 | { | |
8093 | gsi = gsi_last_bb (region->exit); | |
8094 | g = gsi_stmt (gsi); | |
8095 | gcc_assert (g && gimple_code (g) == GIMPLE_OMP_RETURN); | |
8096 | gsi_remove (&gsi, true); | |
8097 | } | |
8098 | } | |
8099 | ||
8100 | ||
8101 | /* Expand the parallel region tree rooted at REGION. Expansion | |
8102 | proceeds in depth-first order. Innermost regions are expanded | |
8103 | first. This way, parallel regions that require a new function to | |
75a70cf9 | 8104 | be created (e.g., GIMPLE_OMP_PARALLEL) can be expanded without having any |
773c5ba7 | 8105 | internal dependencies in their body. */ |
8106 | ||
8107 | static void | |
8108 | expand_omp (struct omp_region *region) | |
8109 | { | |
8110 | while (region) | |
8111 | { | |
1d22f541 | 8112 | location_t saved_location; |
bc7bff74 | 8113 | gimple inner_stmt = NULL; |
1d22f541 | 8114 | |
d1d5b012 | 8115 | /* First, determine whether this is a combined parallel+workshare |
8116 | region. */ | |
75a70cf9 | 8117 | if (region->type == GIMPLE_OMP_PARALLEL) |
d1d5b012 | 8118 | determine_parallel_type (region); |
8119 | ||
bc7bff74 | 8120 | if (region->type == GIMPLE_OMP_FOR |
8121 | && gimple_omp_for_combined_p (last_stmt (region->entry))) | |
8122 | inner_stmt = last_stmt (region->inner->entry); | |
8123 | ||
773c5ba7 | 8124 | if (region->inner) |
8125 | expand_omp (region->inner); | |
8126 | ||
1d22f541 | 8127 | saved_location = input_location; |
75a70cf9 | 8128 | if (gimple_has_location (last_stmt (region->entry))) |
8129 | input_location = gimple_location (last_stmt (region->entry)); | |
1d22f541 | 8130 | |
61e47ac8 | 8131 | switch (region->type) |
773c5ba7 | 8132 | { |
75a70cf9 | 8133 | case GIMPLE_OMP_PARALLEL: |
8134 | case GIMPLE_OMP_TASK: | |
fd6481cf | 8135 | expand_omp_taskreg (region); |
8136 | break; | |
8137 | ||
75a70cf9 | 8138 | case GIMPLE_OMP_FOR: |
bc7bff74 | 8139 | expand_omp_for (region, inner_stmt); |
61e47ac8 | 8140 | break; |
773c5ba7 | 8141 | |
75a70cf9 | 8142 | case GIMPLE_OMP_SECTIONS: |
61e47ac8 | 8143 | expand_omp_sections (region); |
8144 | break; | |
773c5ba7 | 8145 | |
75a70cf9 | 8146 | case GIMPLE_OMP_SECTION: |
61e47ac8 | 8147 | /* Individual omp sections are handled together with their |
75a70cf9 | 8148 | parent GIMPLE_OMP_SECTIONS region. */ |
61e47ac8 | 8149 | break; |
773c5ba7 | 8150 | |
75a70cf9 | 8151 | case GIMPLE_OMP_SINGLE: |
61e47ac8 | 8152 | expand_omp_single (region); |
8153 | break; | |
773c5ba7 | 8154 | |
75a70cf9 | 8155 | case GIMPLE_OMP_MASTER: |
bc7bff74 | 8156 | case GIMPLE_OMP_TASKGROUP: |
75a70cf9 | 8157 | case GIMPLE_OMP_ORDERED: |
8158 | case GIMPLE_OMP_CRITICAL: | |
bc7bff74 | 8159 | case GIMPLE_OMP_TEAMS: |
61e47ac8 | 8160 | expand_omp_synch (region); |
8161 | break; | |
773c5ba7 | 8162 | |
75a70cf9 | 8163 | case GIMPLE_OMP_ATOMIC_LOAD: |
cb7f680b | 8164 | expand_omp_atomic (region); |
8165 | break; | |
8166 | ||
bc7bff74 | 8167 | case GIMPLE_OMP_TARGET: |
8168 | expand_omp_target (region); | |
8169 | break; | |
8170 | ||
61e47ac8 | 8171 | default: |
8172 | gcc_unreachable (); | |
8173 | } | |
cc5982dc | 8174 | |
1d22f541 | 8175 | input_location = saved_location; |
773c5ba7 | 8176 | region = region->next; |
8177 | } | |
8178 | } | |
8179 | ||
8180 | ||
8181 | /* Helper for build_omp_regions. Scan the dominator tree starting at | |
28c92cbb | 8182 | block BB. PARENT is the region that contains BB. If SINGLE_TREE is |
8183 | true, the function ends once a single tree is built (otherwise, whole | |
8184 | forest of OMP constructs may be built). */ | |
773c5ba7 | 8185 | |
8186 | static void | |
28c92cbb | 8187 | build_omp_regions_1 (basic_block bb, struct omp_region *parent, |
8188 | bool single_tree) | |
773c5ba7 | 8189 | { |
75a70cf9 | 8190 | gimple_stmt_iterator gsi; |
8191 | gimple stmt; | |
773c5ba7 | 8192 | basic_block son; |
8193 | ||
75a70cf9 | 8194 | gsi = gsi_last_bb (bb); |
8195 | if (!gsi_end_p (gsi) && is_gimple_omp (gsi_stmt (gsi))) | |
773c5ba7 | 8196 | { |
8197 | struct omp_region *region; | |
75a70cf9 | 8198 | enum gimple_code code; |
773c5ba7 | 8199 | |
75a70cf9 | 8200 | stmt = gsi_stmt (gsi); |
8201 | code = gimple_code (stmt); | |
8202 | if (code == GIMPLE_OMP_RETURN) | |
773c5ba7 | 8203 | { |
8204 | /* STMT is the return point out of region PARENT. Mark it | |
8205 | as the exit point and make PARENT the immediately | |
8206 | enclosing region. */ | |
8207 | gcc_assert (parent); | |
8208 | region = parent; | |
61e47ac8 | 8209 | region->exit = bb; |
773c5ba7 | 8210 | parent = parent->outer; |
773c5ba7 | 8211 | } |
75a70cf9 | 8212 | else if (code == GIMPLE_OMP_ATOMIC_STORE) |
cb7f680b | 8213 | { |
75a70cf9 | 8214 | /* GIMPLE_OMP_ATOMIC_STORE is analoguous to |
8215 | GIMPLE_OMP_RETURN, but matches with | |
8216 | GIMPLE_OMP_ATOMIC_LOAD. */ | |
cb7f680b | 8217 | gcc_assert (parent); |
75a70cf9 | 8218 | gcc_assert (parent->type == GIMPLE_OMP_ATOMIC_LOAD); |
cb7f680b | 8219 | region = parent; |
8220 | region->exit = bb; | |
8221 | parent = parent->outer; | |
8222 | } | |
8223 | ||
75a70cf9 | 8224 | else if (code == GIMPLE_OMP_CONTINUE) |
61e47ac8 | 8225 | { |
8226 | gcc_assert (parent); | |
8227 | parent->cont = bb; | |
8228 | } | |
75a70cf9 | 8229 | else if (code == GIMPLE_OMP_SECTIONS_SWITCH) |
ac6e3339 | 8230 | { |
75a70cf9 | 8231 | /* GIMPLE_OMP_SECTIONS_SWITCH is part of |
8232 | GIMPLE_OMP_SECTIONS, and we do nothing for it. */ | |
8233 | ; | |
ac6e3339 | 8234 | } |
bc7bff74 | 8235 | else if (code == GIMPLE_OMP_TARGET |
8236 | && gimple_omp_target_kind (stmt) == GF_OMP_TARGET_KIND_UPDATE) | |
8237 | new_omp_region (bb, code, parent); | |
773c5ba7 | 8238 | else |
8239 | { | |
8240 | /* Otherwise, this directive becomes the parent for a new | |
8241 | region. */ | |
61e47ac8 | 8242 | region = new_omp_region (bb, code, parent); |
773c5ba7 | 8243 | parent = region; |
8244 | } | |
773c5ba7 | 8245 | } |
8246 | ||
28c92cbb | 8247 | if (single_tree && !parent) |
8248 | return; | |
8249 | ||
773c5ba7 | 8250 | for (son = first_dom_son (CDI_DOMINATORS, bb); |
8251 | son; | |
8252 | son = next_dom_son (CDI_DOMINATORS, son)) | |
28c92cbb | 8253 | build_omp_regions_1 (son, parent, single_tree); |
8254 | } | |
8255 | ||
8256 | /* Builds the tree of OMP regions rooted at ROOT, storing it to | |
8257 | root_omp_region. */ | |
8258 | ||
8259 | static void | |
8260 | build_omp_regions_root (basic_block root) | |
8261 | { | |
8262 | gcc_assert (root_omp_region == NULL); | |
8263 | build_omp_regions_1 (root, NULL, true); | |
8264 | gcc_assert (root_omp_region != NULL); | |
773c5ba7 | 8265 | } |
8266 | ||
28c92cbb | 8267 | /* Expands omp construct (and its subconstructs) starting in HEAD. */ |
8268 | ||
8269 | void | |
8270 | omp_expand_local (basic_block head) | |
8271 | { | |
8272 | build_omp_regions_root (head); | |
8273 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
8274 | { | |
8275 | fprintf (dump_file, "\nOMP region tree\n\n"); | |
8276 | dump_omp_region (dump_file, root_omp_region, 0); | |
8277 | fprintf (dump_file, "\n"); | |
8278 | } | |
8279 | ||
8280 | remove_exit_barriers (root_omp_region); | |
8281 | expand_omp (root_omp_region); | |
8282 | ||
8283 | free_omp_regions (); | |
8284 | } | |
773c5ba7 | 8285 | |
8286 | /* Scan the CFG and build a tree of OMP regions. Return the root of | |
8287 | the OMP region tree. */ | |
8288 | ||
8289 | static void | |
8290 | build_omp_regions (void) | |
8291 | { | |
61e47ac8 | 8292 | gcc_assert (root_omp_region == NULL); |
773c5ba7 | 8293 | calculate_dominance_info (CDI_DOMINATORS); |
34154e27 | 8294 | build_omp_regions_1 (ENTRY_BLOCK_PTR_FOR_FN (cfun), NULL, false); |
773c5ba7 | 8295 | } |
8296 | ||
773c5ba7 | 8297 | /* Main entry point for expanding OMP-GIMPLE into runtime calls. */ |
8298 | ||
2a1990e9 | 8299 | static unsigned int |
773c5ba7 | 8300 | execute_expand_omp (void) |
8301 | { | |
8302 | build_omp_regions (); | |
8303 | ||
61e47ac8 | 8304 | if (!root_omp_region) |
8305 | return 0; | |
773c5ba7 | 8306 | |
61e47ac8 | 8307 | if (dump_file) |
8308 | { | |
8309 | fprintf (dump_file, "\nOMP region tree\n\n"); | |
8310 | dump_omp_region (dump_file, root_omp_region, 0); | |
8311 | fprintf (dump_file, "\n"); | |
773c5ba7 | 8312 | } |
61e47ac8 | 8313 | |
8314 | remove_exit_barriers (root_omp_region); | |
8315 | ||
8316 | expand_omp (root_omp_region); | |
8317 | ||
61e47ac8 | 8318 | cleanup_tree_cfg (); |
8319 | ||
8320 | free_omp_regions (); | |
8321 | ||
2a1990e9 | 8322 | return 0; |
773c5ba7 | 8323 | } |
8324 | ||
79acaae1 | 8325 | /* OMP expansion -- the default pass, run before creation of SSA form. */ |
8326 | ||
773c5ba7 | 8327 | static bool |
8328 | gate_expand_omp (void) | |
8329 | { | |
f2697631 | 8330 | return ((flag_openmp != 0 || flag_openmp_simd != 0 |
a89e6c15 | 8331 | || flag_cilkplus != 0) && !seen_error ()); |
773c5ba7 | 8332 | } |
8333 | ||
cbe8bda8 | 8334 | namespace { |
8335 | ||
8336 | const pass_data pass_data_expand_omp = | |
8337 | { | |
8338 | GIMPLE_PASS, /* type */ | |
8339 | "ompexp", /* name */ | |
8340 | OPTGROUP_NONE, /* optinfo_flags */ | |
8341 | true, /* has_gate */ | |
8342 | true, /* has_execute */ | |
8343 | TV_NONE, /* tv_id */ | |
8344 | PROP_gimple_any, /* properties_required */ | |
8345 | 0, /* properties_provided */ | |
8346 | 0, /* properties_destroyed */ | |
8347 | 0, /* todo_flags_start */ | |
8348 | 0, /* todo_flags_finish */ | |
773c5ba7 | 8349 | }; |
cbe8bda8 | 8350 | |
8351 | class pass_expand_omp : public gimple_opt_pass | |
8352 | { | |
8353 | public: | |
9af5ce0c | 8354 | pass_expand_omp (gcc::context *ctxt) |
8355 | : gimple_opt_pass (pass_data_expand_omp, ctxt) | |
cbe8bda8 | 8356 | {} |
8357 | ||
8358 | /* opt_pass methods: */ | |
8359 | bool gate () { return gate_expand_omp (); } | |
8360 | unsigned int execute () { return execute_expand_omp (); } | |
8361 | ||
8362 | }; // class pass_expand_omp | |
8363 | ||
8364 | } // anon namespace | |
8365 | ||
8366 | gimple_opt_pass * | |
8367 | make_pass_expand_omp (gcc::context *ctxt) | |
8368 | { | |
8369 | return new pass_expand_omp (ctxt); | |
8370 | } | |
773c5ba7 | 8371 | \f |
8372 | /* Routines to lower OpenMP directives into OMP-GIMPLE. */ | |
8373 | ||
bc7bff74 | 8374 | /* If ctx is a worksharing context inside of a cancellable parallel |
8375 | region and it isn't nowait, add lhs to its GIMPLE_OMP_RETURN | |
8376 | and conditional branch to parallel's cancel_label to handle | |
8377 | cancellation in the implicit barrier. */ | |
8378 | ||
8379 | static void | |
8380 | maybe_add_implicit_barrier_cancel (omp_context *ctx, gimple_seq *body) | |
8381 | { | |
8382 | gimple omp_return = gimple_seq_last_stmt (*body); | |
8383 | gcc_assert (gimple_code (omp_return) == GIMPLE_OMP_RETURN); | |
8384 | if (gimple_omp_return_nowait_p (omp_return)) | |
8385 | return; | |
8386 | if (ctx->outer | |
8387 | && gimple_code (ctx->outer->stmt) == GIMPLE_OMP_PARALLEL | |
8388 | && ctx->outer->cancellable) | |
8389 | { | |
8390 | tree lhs = create_tmp_var (boolean_type_node, NULL); | |
8391 | gimple_omp_return_set_lhs (omp_return, lhs); | |
8392 | tree fallthru_label = create_artificial_label (UNKNOWN_LOCATION); | |
8393 | gimple g = gimple_build_cond (NE_EXPR, lhs, boolean_false_node, | |
8394 | ctx->outer->cancel_label, fallthru_label); | |
8395 | gimple_seq_add_stmt (body, g); | |
8396 | gimple_seq_add_stmt (body, gimple_build_label (fallthru_label)); | |
8397 | } | |
8398 | } | |
8399 | ||
75a70cf9 | 8400 | /* Lower the OpenMP sections directive in the current statement in GSI_P. |
8401 | CTX is the enclosing OMP context for the current statement. */ | |
773c5ba7 | 8402 | |
8403 | static void | |
75a70cf9 | 8404 | lower_omp_sections (gimple_stmt_iterator *gsi_p, omp_context *ctx) |
773c5ba7 | 8405 | { |
75a70cf9 | 8406 | tree block, control; |
8407 | gimple_stmt_iterator tgsi; | |
75a70cf9 | 8408 | gimple stmt, new_stmt, bind, t; |
e3a19533 | 8409 | gimple_seq ilist, dlist, olist, new_body; |
773c5ba7 | 8410 | |
75a70cf9 | 8411 | stmt = gsi_stmt (*gsi_p); |
773c5ba7 | 8412 | |
8a4a28a8 | 8413 | push_gimplify_context (); |
773c5ba7 | 8414 | |
8415 | dlist = NULL; | |
8416 | ilist = NULL; | |
75a70cf9 | 8417 | lower_rec_input_clauses (gimple_omp_sections_clauses (stmt), |
bc7bff74 | 8418 | &ilist, &dlist, ctx, NULL); |
773c5ba7 | 8419 | |
e3a19533 | 8420 | new_body = gimple_omp_body (stmt); |
8421 | gimple_omp_set_body (stmt, NULL); | |
8422 | tgsi = gsi_start (new_body); | |
8423 | for (; !gsi_end_p (tgsi); gsi_next (&tgsi)) | |
773c5ba7 | 8424 | { |
8425 | omp_context *sctx; | |
75a70cf9 | 8426 | gimple sec_start; |
773c5ba7 | 8427 | |
75a70cf9 | 8428 | sec_start = gsi_stmt (tgsi); |
773c5ba7 | 8429 | sctx = maybe_lookup_ctx (sec_start); |
8430 | gcc_assert (sctx); | |
8431 | ||
e3a19533 | 8432 | lower_omp (gimple_omp_body_ptr (sec_start), sctx); |
8433 | gsi_insert_seq_after (&tgsi, gimple_omp_body (sec_start), | |
8434 | GSI_CONTINUE_LINKING); | |
75a70cf9 | 8435 | gimple_omp_set_body (sec_start, NULL); |
773c5ba7 | 8436 | |
e3a19533 | 8437 | if (gsi_one_before_end_p (tgsi)) |
773c5ba7 | 8438 | { |
75a70cf9 | 8439 | gimple_seq l = NULL; |
8440 | lower_lastprivate_clauses (gimple_omp_sections_clauses (stmt), NULL, | |
773c5ba7 | 8441 | &l, ctx); |
e3a19533 | 8442 | gsi_insert_seq_after (&tgsi, l, GSI_CONTINUE_LINKING); |
75a70cf9 | 8443 | gimple_omp_section_set_last (sec_start); |
773c5ba7 | 8444 | } |
48e1416a | 8445 | |
e3a19533 | 8446 | gsi_insert_after (&tgsi, gimple_build_omp_return (false), |
8447 | GSI_CONTINUE_LINKING); | |
773c5ba7 | 8448 | } |
1e8e9920 | 8449 | |
8450 | block = make_node (BLOCK); | |
e3a19533 | 8451 | bind = gimple_build_bind (NULL, new_body, block); |
1e8e9920 | 8452 | |
75a70cf9 | 8453 | olist = NULL; |
8454 | lower_reduction_clauses (gimple_omp_sections_clauses (stmt), &olist, ctx); | |
773c5ba7 | 8455 | |
1d22f541 | 8456 | block = make_node (BLOCK); |
75a70cf9 | 8457 | new_stmt = gimple_build_bind (NULL, NULL, block); |
e3a19533 | 8458 | gsi_replace (gsi_p, new_stmt, true); |
773c5ba7 | 8459 | |
1d22f541 | 8460 | pop_gimplify_context (new_stmt); |
75a70cf9 | 8461 | gimple_bind_append_vars (new_stmt, ctx->block_vars); |
8462 | BLOCK_VARS (block) = gimple_bind_vars (bind); | |
1d22f541 | 8463 | if (BLOCK_VARS (block)) |
8464 | TREE_USED (block) = 1; | |
8465 | ||
75a70cf9 | 8466 | new_body = NULL; |
8467 | gimple_seq_add_seq (&new_body, ilist); | |
8468 | gimple_seq_add_stmt (&new_body, stmt); | |
8469 | gimple_seq_add_stmt (&new_body, gimple_build_omp_sections_switch ()); | |
8470 | gimple_seq_add_stmt (&new_body, bind); | |
61e47ac8 | 8471 | |
ac6e3339 | 8472 | control = create_tmp_var (unsigned_type_node, ".section"); |
75a70cf9 | 8473 | t = gimple_build_omp_continue (control, control); |
8474 | gimple_omp_sections_set_control (stmt, control); | |
8475 | gimple_seq_add_stmt (&new_body, t); | |
61e47ac8 | 8476 | |
75a70cf9 | 8477 | gimple_seq_add_seq (&new_body, olist); |
bc7bff74 | 8478 | if (ctx->cancellable) |
8479 | gimple_seq_add_stmt (&new_body, gimple_build_label (ctx->cancel_label)); | |
75a70cf9 | 8480 | gimple_seq_add_seq (&new_body, dlist); |
773c5ba7 | 8481 | |
75a70cf9 | 8482 | new_body = maybe_catch_exception (new_body); |
aade31a0 | 8483 | |
75a70cf9 | 8484 | t = gimple_build_omp_return |
8485 | (!!find_omp_clause (gimple_omp_sections_clauses (stmt), | |
8486 | OMP_CLAUSE_NOWAIT)); | |
8487 | gimple_seq_add_stmt (&new_body, t); | |
bc7bff74 | 8488 | maybe_add_implicit_barrier_cancel (ctx, &new_body); |
61e47ac8 | 8489 | |
75a70cf9 | 8490 | gimple_bind_set_body (new_stmt, new_body); |
1e8e9920 | 8491 | } |
8492 | ||
8493 | ||
773c5ba7 | 8494 | /* A subroutine of lower_omp_single. Expand the simple form of |
75a70cf9 | 8495 | a GIMPLE_OMP_SINGLE, without a copyprivate clause: |
1e8e9920 | 8496 | |
8497 | if (GOMP_single_start ()) | |
8498 | BODY; | |
8499 | [ GOMP_barrier (); ] -> unless 'nowait' is present. | |
773c5ba7 | 8500 | |
8501 | FIXME. It may be better to delay expanding the logic of this until | |
8502 | pass_expand_omp. The expanded logic may make the job more difficult | |
8503 | to a synchronization analysis pass. */ | |
1e8e9920 | 8504 | |
8505 | static void | |
75a70cf9 | 8506 | lower_omp_single_simple (gimple single_stmt, gimple_seq *pre_p) |
1e8e9920 | 8507 | { |
e60a6f7b | 8508 | location_t loc = gimple_location (single_stmt); |
8509 | tree tlabel = create_artificial_label (loc); | |
8510 | tree flabel = create_artificial_label (loc); | |
75a70cf9 | 8511 | gimple call, cond; |
8512 | tree lhs, decl; | |
8513 | ||
b9a16870 | 8514 | decl = builtin_decl_explicit (BUILT_IN_GOMP_SINGLE_START); |
75a70cf9 | 8515 | lhs = create_tmp_var (TREE_TYPE (TREE_TYPE (decl)), NULL); |
8516 | call = gimple_build_call (decl, 0); | |
8517 | gimple_call_set_lhs (call, lhs); | |
8518 | gimple_seq_add_stmt (pre_p, call); | |
8519 | ||
8520 | cond = gimple_build_cond (EQ_EXPR, lhs, | |
389dd41b | 8521 | fold_convert_loc (loc, TREE_TYPE (lhs), |
8522 | boolean_true_node), | |
75a70cf9 | 8523 | tlabel, flabel); |
8524 | gimple_seq_add_stmt (pre_p, cond); | |
8525 | gimple_seq_add_stmt (pre_p, gimple_build_label (tlabel)); | |
8526 | gimple_seq_add_seq (pre_p, gimple_omp_body (single_stmt)); | |
8527 | gimple_seq_add_stmt (pre_p, gimple_build_label (flabel)); | |
1e8e9920 | 8528 | } |
8529 | ||
773c5ba7 | 8530 | |
8531 | /* A subroutine of lower_omp_single. Expand the simple form of | |
75a70cf9 | 8532 | a GIMPLE_OMP_SINGLE, with a copyprivate clause: |
1e8e9920 | 8533 | |
8534 | #pragma omp single copyprivate (a, b, c) | |
8535 | ||
8536 | Create a new structure to hold copies of 'a', 'b' and 'c' and emit: | |
8537 | ||
8538 | { | |
8539 | if ((copyout_p = GOMP_single_copy_start ()) == NULL) | |
8540 | { | |
8541 | BODY; | |
8542 | copyout.a = a; | |
8543 | copyout.b = b; | |
8544 | copyout.c = c; | |
8545 | GOMP_single_copy_end (©out); | |
8546 | } | |
8547 | else | |
8548 | { | |
8549 | a = copyout_p->a; | |
8550 | b = copyout_p->b; | |
8551 | c = copyout_p->c; | |
8552 | } | |
8553 | GOMP_barrier (); | |
8554 | } | |
773c5ba7 | 8555 | |
8556 | FIXME. It may be better to delay expanding the logic of this until | |
8557 | pass_expand_omp. The expanded logic may make the job more difficult | |
8558 | to a synchronization analysis pass. */ | |
1e8e9920 | 8559 | |
8560 | static void | |
75a70cf9 | 8561 | lower_omp_single_copy (gimple single_stmt, gimple_seq *pre_p, omp_context *ctx) |
1e8e9920 | 8562 | { |
b9a16870 | 8563 | tree ptr_type, t, l0, l1, l2, bfn_decl; |
75a70cf9 | 8564 | gimple_seq copyin_seq; |
e60a6f7b | 8565 | location_t loc = gimple_location (single_stmt); |
1e8e9920 | 8566 | |
8567 | ctx->sender_decl = create_tmp_var (ctx->record_type, ".omp_copy_o"); | |
8568 | ||
8569 | ptr_type = build_pointer_type (ctx->record_type); | |
8570 | ctx->receiver_decl = create_tmp_var (ptr_type, ".omp_copy_i"); | |
8571 | ||
e60a6f7b | 8572 | l0 = create_artificial_label (loc); |
8573 | l1 = create_artificial_label (loc); | |
8574 | l2 = create_artificial_label (loc); | |
1e8e9920 | 8575 | |
b9a16870 | 8576 | bfn_decl = builtin_decl_explicit (BUILT_IN_GOMP_SINGLE_COPY_START); |
8577 | t = build_call_expr_loc (loc, bfn_decl, 0); | |
389dd41b | 8578 | t = fold_convert_loc (loc, ptr_type, t); |
75a70cf9 | 8579 | gimplify_assign (ctx->receiver_decl, t, pre_p); |
1e8e9920 | 8580 | |
8581 | t = build2 (EQ_EXPR, boolean_type_node, ctx->receiver_decl, | |
8582 | build_int_cst (ptr_type, 0)); | |
8583 | t = build3 (COND_EXPR, void_type_node, t, | |
8584 | build_and_jump (&l0), build_and_jump (&l1)); | |
8585 | gimplify_and_add (t, pre_p); | |
8586 | ||
75a70cf9 | 8587 | gimple_seq_add_stmt (pre_p, gimple_build_label (l0)); |
1e8e9920 | 8588 | |
75a70cf9 | 8589 | gimple_seq_add_seq (pre_p, gimple_omp_body (single_stmt)); |
1e8e9920 | 8590 | |
8591 | copyin_seq = NULL; | |
75a70cf9 | 8592 | lower_copyprivate_clauses (gimple_omp_single_clauses (single_stmt), pre_p, |
1e8e9920 | 8593 | ©in_seq, ctx); |
8594 | ||
389dd41b | 8595 | t = build_fold_addr_expr_loc (loc, ctx->sender_decl); |
b9a16870 | 8596 | bfn_decl = builtin_decl_explicit (BUILT_IN_GOMP_SINGLE_COPY_END); |
8597 | t = build_call_expr_loc (loc, bfn_decl, 1, t); | |
1e8e9920 | 8598 | gimplify_and_add (t, pre_p); |
8599 | ||
8600 | t = build_and_jump (&l2); | |
8601 | gimplify_and_add (t, pre_p); | |
8602 | ||
75a70cf9 | 8603 | gimple_seq_add_stmt (pre_p, gimple_build_label (l1)); |
1e8e9920 | 8604 | |
75a70cf9 | 8605 | gimple_seq_add_seq (pre_p, copyin_seq); |
1e8e9920 | 8606 | |
75a70cf9 | 8607 | gimple_seq_add_stmt (pre_p, gimple_build_label (l2)); |
1e8e9920 | 8608 | } |
8609 | ||
773c5ba7 | 8610 | |
1e8e9920 | 8611 | /* Expand code for an OpenMP single directive. */ |
8612 | ||
8613 | static void | |
75a70cf9 | 8614 | lower_omp_single (gimple_stmt_iterator *gsi_p, omp_context *ctx) |
1e8e9920 | 8615 | { |
75a70cf9 | 8616 | tree block; |
8617 | gimple t, bind, single_stmt = gsi_stmt (*gsi_p); | |
bc7bff74 | 8618 | gimple_seq bind_body, bind_body_tail = NULL, dlist; |
1e8e9920 | 8619 | |
8a4a28a8 | 8620 | push_gimplify_context (); |
1e8e9920 | 8621 | |
e3a19533 | 8622 | block = make_node (BLOCK); |
8623 | bind = gimple_build_bind (NULL, NULL, block); | |
8624 | gsi_replace (gsi_p, bind, true); | |
75a70cf9 | 8625 | bind_body = NULL; |
e3a19533 | 8626 | dlist = NULL; |
75a70cf9 | 8627 | lower_rec_input_clauses (gimple_omp_single_clauses (single_stmt), |
bc7bff74 | 8628 | &bind_body, &dlist, ctx, NULL); |
e3a19533 | 8629 | lower_omp (gimple_omp_body_ptr (single_stmt), ctx); |
1e8e9920 | 8630 | |
75a70cf9 | 8631 | gimple_seq_add_stmt (&bind_body, single_stmt); |
1e8e9920 | 8632 | |
8633 | if (ctx->record_type) | |
75a70cf9 | 8634 | lower_omp_single_copy (single_stmt, &bind_body, ctx); |
1e8e9920 | 8635 | else |
75a70cf9 | 8636 | lower_omp_single_simple (single_stmt, &bind_body); |
8637 | ||
8638 | gimple_omp_set_body (single_stmt, NULL); | |
1e8e9920 | 8639 | |
75a70cf9 | 8640 | gimple_seq_add_seq (&bind_body, dlist); |
61e47ac8 | 8641 | |
75a70cf9 | 8642 | bind_body = maybe_catch_exception (bind_body); |
61e47ac8 | 8643 | |
48e1416a | 8644 | t = gimple_build_omp_return |
75a70cf9 | 8645 | (!!find_omp_clause (gimple_omp_single_clauses (single_stmt), |
8646 | OMP_CLAUSE_NOWAIT)); | |
bc7bff74 | 8647 | gimple_seq_add_stmt (&bind_body_tail, t); |
8648 | maybe_add_implicit_barrier_cancel (ctx, &bind_body_tail); | |
8649 | if (ctx->record_type) | |
8650 | { | |
8651 | gimple_stmt_iterator gsi = gsi_start (bind_body_tail); | |
8652 | tree clobber = build_constructor (ctx->record_type, NULL); | |
8653 | TREE_THIS_VOLATILE (clobber) = 1; | |
8654 | gsi_insert_after (&gsi, gimple_build_assign (ctx->sender_decl, | |
8655 | clobber), GSI_SAME_STMT); | |
8656 | } | |
8657 | gimple_seq_add_seq (&bind_body, bind_body_tail); | |
e3a19533 | 8658 | gimple_bind_set_body (bind, bind_body); |
61e47ac8 | 8659 | |
1e8e9920 | 8660 | pop_gimplify_context (bind); |
773c5ba7 | 8661 | |
75a70cf9 | 8662 | gimple_bind_append_vars (bind, ctx->block_vars); |
8663 | BLOCK_VARS (block) = ctx->block_vars; | |
1d22f541 | 8664 | if (BLOCK_VARS (block)) |
8665 | TREE_USED (block) = 1; | |
1e8e9920 | 8666 | } |
8667 | ||
773c5ba7 | 8668 | |
1e8e9920 | 8669 | /* Expand code for an OpenMP master directive. */ |
8670 | ||
8671 | static void | |
75a70cf9 | 8672 | lower_omp_master (gimple_stmt_iterator *gsi_p, omp_context *ctx) |
1e8e9920 | 8673 | { |
b9a16870 | 8674 | tree block, lab = NULL, x, bfn_decl; |
75a70cf9 | 8675 | gimple stmt = gsi_stmt (*gsi_p), bind; |
389dd41b | 8676 | location_t loc = gimple_location (stmt); |
75a70cf9 | 8677 | gimple_seq tseq; |
1e8e9920 | 8678 | |
8a4a28a8 | 8679 | push_gimplify_context (); |
1e8e9920 | 8680 | |
8681 | block = make_node (BLOCK); | |
e3a19533 | 8682 | bind = gimple_build_bind (NULL, NULL, block); |
8683 | gsi_replace (gsi_p, bind, true); | |
8684 | gimple_bind_add_stmt (bind, stmt); | |
61e47ac8 | 8685 | |
b9a16870 | 8686 | bfn_decl = builtin_decl_explicit (BUILT_IN_OMP_GET_THREAD_NUM); |
8687 | x = build_call_expr_loc (loc, bfn_decl, 0); | |
1e8e9920 | 8688 | x = build2 (EQ_EXPR, boolean_type_node, x, integer_zero_node); |
8689 | x = build3 (COND_EXPR, void_type_node, x, NULL, build_and_jump (&lab)); | |
75a70cf9 | 8690 | tseq = NULL; |
8691 | gimplify_and_add (x, &tseq); | |
8692 | gimple_bind_add_seq (bind, tseq); | |
1e8e9920 | 8693 | |
e3a19533 | 8694 | lower_omp (gimple_omp_body_ptr (stmt), ctx); |
75a70cf9 | 8695 | gimple_omp_set_body (stmt, maybe_catch_exception (gimple_omp_body (stmt))); |
8696 | gimple_bind_add_seq (bind, gimple_omp_body (stmt)); | |
8697 | gimple_omp_set_body (stmt, NULL); | |
1e8e9920 | 8698 | |
75a70cf9 | 8699 | gimple_bind_add_stmt (bind, gimple_build_label (lab)); |
61e47ac8 | 8700 | |
75a70cf9 | 8701 | gimple_bind_add_stmt (bind, gimple_build_omp_return (true)); |
61e47ac8 | 8702 | |
1e8e9920 | 8703 | pop_gimplify_context (bind); |
773c5ba7 | 8704 | |
75a70cf9 | 8705 | gimple_bind_append_vars (bind, ctx->block_vars); |
8706 | BLOCK_VARS (block) = ctx->block_vars; | |
1e8e9920 | 8707 | } |
8708 | ||
773c5ba7 | 8709 | |
bc7bff74 | 8710 | /* Expand code for an OpenMP taskgroup directive. */ |
8711 | ||
8712 | static void | |
8713 | lower_omp_taskgroup (gimple_stmt_iterator *gsi_p, omp_context *ctx) | |
8714 | { | |
8715 | gimple stmt = gsi_stmt (*gsi_p), bind, x; | |
8716 | tree block = make_node (BLOCK); | |
8717 | ||
8718 | bind = gimple_build_bind (NULL, NULL, block); | |
8719 | gsi_replace (gsi_p, bind, true); | |
8720 | gimple_bind_add_stmt (bind, stmt); | |
8721 | ||
8722 | x = gimple_build_call (builtin_decl_explicit (BUILT_IN_GOMP_TASKGROUP_START), | |
8723 | 0); | |
8724 | gimple_bind_add_stmt (bind, x); | |
8725 | ||
8726 | lower_omp (gimple_omp_body_ptr (stmt), ctx); | |
8727 | gimple_bind_add_seq (bind, gimple_omp_body (stmt)); | |
8728 | gimple_omp_set_body (stmt, NULL); | |
8729 | ||
8730 | gimple_bind_add_stmt (bind, gimple_build_omp_return (true)); | |
8731 | ||
8732 | gimple_bind_append_vars (bind, ctx->block_vars); | |
8733 | BLOCK_VARS (block) = ctx->block_vars; | |
8734 | } | |
8735 | ||
8736 | ||
1e8e9920 | 8737 | /* Expand code for an OpenMP ordered directive. */ |
8738 | ||
8739 | static void | |
75a70cf9 | 8740 | lower_omp_ordered (gimple_stmt_iterator *gsi_p, omp_context *ctx) |
1e8e9920 | 8741 | { |
75a70cf9 | 8742 | tree block; |
8743 | gimple stmt = gsi_stmt (*gsi_p), bind, x; | |
1e8e9920 | 8744 | |
8a4a28a8 | 8745 | push_gimplify_context (); |
1e8e9920 | 8746 | |
8747 | block = make_node (BLOCK); | |
e3a19533 | 8748 | bind = gimple_build_bind (NULL, NULL, block); |
8749 | gsi_replace (gsi_p, bind, true); | |
8750 | gimple_bind_add_stmt (bind, stmt); | |
61e47ac8 | 8751 | |
b9a16870 | 8752 | x = gimple_build_call (builtin_decl_explicit (BUILT_IN_GOMP_ORDERED_START), |
8753 | 0); | |
75a70cf9 | 8754 | gimple_bind_add_stmt (bind, x); |
1e8e9920 | 8755 | |
e3a19533 | 8756 | lower_omp (gimple_omp_body_ptr (stmt), ctx); |
75a70cf9 | 8757 | gimple_omp_set_body (stmt, maybe_catch_exception (gimple_omp_body (stmt))); |
8758 | gimple_bind_add_seq (bind, gimple_omp_body (stmt)); | |
8759 | gimple_omp_set_body (stmt, NULL); | |
1e8e9920 | 8760 | |
b9a16870 | 8761 | x = gimple_build_call (builtin_decl_explicit (BUILT_IN_GOMP_ORDERED_END), 0); |
75a70cf9 | 8762 | gimple_bind_add_stmt (bind, x); |
61e47ac8 | 8763 | |
75a70cf9 | 8764 | gimple_bind_add_stmt (bind, gimple_build_omp_return (true)); |
61e47ac8 | 8765 | |
1e8e9920 | 8766 | pop_gimplify_context (bind); |
773c5ba7 | 8767 | |
75a70cf9 | 8768 | gimple_bind_append_vars (bind, ctx->block_vars); |
8769 | BLOCK_VARS (block) = gimple_bind_vars (bind); | |
1e8e9920 | 8770 | } |
8771 | ||
1e8e9920 | 8772 | |
75a70cf9 | 8773 | /* Gimplify a GIMPLE_OMP_CRITICAL statement. This is a relatively simple |
1e8e9920 | 8774 | substitution of a couple of function calls. But in the NAMED case, |
8775 | requires that languages coordinate a symbol name. It is therefore | |
8776 | best put here in common code. */ | |
8777 | ||
8778 | static GTY((param1_is (tree), param2_is (tree))) | |
8779 | splay_tree critical_name_mutexes; | |
8780 | ||
8781 | static void | |
75a70cf9 | 8782 | lower_omp_critical (gimple_stmt_iterator *gsi_p, omp_context *ctx) |
1e8e9920 | 8783 | { |
75a70cf9 | 8784 | tree block; |
8785 | tree name, lock, unlock; | |
8786 | gimple stmt = gsi_stmt (*gsi_p), bind; | |
389dd41b | 8787 | location_t loc = gimple_location (stmt); |
75a70cf9 | 8788 | gimple_seq tbody; |
1e8e9920 | 8789 | |
75a70cf9 | 8790 | name = gimple_omp_critical_name (stmt); |
1e8e9920 | 8791 | if (name) |
8792 | { | |
c2f47e15 | 8793 | tree decl; |
1e8e9920 | 8794 | splay_tree_node n; |
8795 | ||
8796 | if (!critical_name_mutexes) | |
8797 | critical_name_mutexes | |
ba72912a | 8798 | = splay_tree_new_ggc (splay_tree_compare_pointers, |
8799 | ggc_alloc_splay_tree_tree_node_tree_node_splay_tree_s, | |
8800 | ggc_alloc_splay_tree_tree_node_tree_node_splay_tree_node_s); | |
1e8e9920 | 8801 | |
8802 | n = splay_tree_lookup (critical_name_mutexes, (splay_tree_key) name); | |
8803 | if (n == NULL) | |
8804 | { | |
8805 | char *new_str; | |
8806 | ||
8807 | decl = create_tmp_var_raw (ptr_type_node, NULL); | |
8808 | ||
8809 | new_str = ACONCAT ((".gomp_critical_user_", | |
8810 | IDENTIFIER_POINTER (name), NULL)); | |
8811 | DECL_NAME (decl) = get_identifier (new_str); | |
8812 | TREE_PUBLIC (decl) = 1; | |
8813 | TREE_STATIC (decl) = 1; | |
8814 | DECL_COMMON (decl) = 1; | |
8815 | DECL_ARTIFICIAL (decl) = 1; | |
8816 | DECL_IGNORED_P (decl) = 1; | |
1d416bd7 | 8817 | varpool_finalize_decl (decl); |
1e8e9920 | 8818 | |
8819 | splay_tree_insert (critical_name_mutexes, (splay_tree_key) name, | |
8820 | (splay_tree_value) decl); | |
8821 | } | |
8822 | else | |
8823 | decl = (tree) n->value; | |
8824 | ||
b9a16870 | 8825 | lock = builtin_decl_explicit (BUILT_IN_GOMP_CRITICAL_NAME_START); |
389dd41b | 8826 | lock = build_call_expr_loc (loc, lock, 1, build_fold_addr_expr_loc (loc, decl)); |
1e8e9920 | 8827 | |
b9a16870 | 8828 | unlock = builtin_decl_explicit (BUILT_IN_GOMP_CRITICAL_NAME_END); |
389dd41b | 8829 | unlock = build_call_expr_loc (loc, unlock, 1, |
8830 | build_fold_addr_expr_loc (loc, decl)); | |
1e8e9920 | 8831 | } |
8832 | else | |
8833 | { | |
b9a16870 | 8834 | lock = builtin_decl_explicit (BUILT_IN_GOMP_CRITICAL_START); |
389dd41b | 8835 | lock = build_call_expr_loc (loc, lock, 0); |
1e8e9920 | 8836 | |
b9a16870 | 8837 | unlock = builtin_decl_explicit (BUILT_IN_GOMP_CRITICAL_END); |
389dd41b | 8838 | unlock = build_call_expr_loc (loc, unlock, 0); |
1e8e9920 | 8839 | } |
8840 | ||
8a4a28a8 | 8841 | push_gimplify_context (); |
1e8e9920 | 8842 | |
8843 | block = make_node (BLOCK); | |
e3a19533 | 8844 | bind = gimple_build_bind (NULL, NULL, block); |
8845 | gsi_replace (gsi_p, bind, true); | |
8846 | gimple_bind_add_stmt (bind, stmt); | |
61e47ac8 | 8847 | |
75a70cf9 | 8848 | tbody = gimple_bind_body (bind); |
8849 | gimplify_and_add (lock, &tbody); | |
8850 | gimple_bind_set_body (bind, tbody); | |
1e8e9920 | 8851 | |
e3a19533 | 8852 | lower_omp (gimple_omp_body_ptr (stmt), ctx); |
75a70cf9 | 8853 | gimple_omp_set_body (stmt, maybe_catch_exception (gimple_omp_body (stmt))); |
8854 | gimple_bind_add_seq (bind, gimple_omp_body (stmt)); | |
8855 | gimple_omp_set_body (stmt, NULL); | |
1e8e9920 | 8856 | |
75a70cf9 | 8857 | tbody = gimple_bind_body (bind); |
8858 | gimplify_and_add (unlock, &tbody); | |
8859 | gimple_bind_set_body (bind, tbody); | |
61e47ac8 | 8860 | |
75a70cf9 | 8861 | gimple_bind_add_stmt (bind, gimple_build_omp_return (true)); |
1e8e9920 | 8862 | |
8863 | pop_gimplify_context (bind); | |
75a70cf9 | 8864 | gimple_bind_append_vars (bind, ctx->block_vars); |
8865 | BLOCK_VARS (block) = gimple_bind_vars (bind); | |
773c5ba7 | 8866 | } |
8867 | ||
8868 | ||
8869 | /* A subroutine of lower_omp_for. Generate code to emit the predicate | |
8870 | for a lastprivate clause. Given a loop control predicate of (V | |
8871 | cond N2), we gate the clause on (!(V cond N2)). The lowered form | |
1e4afe3c | 8872 | is appended to *DLIST, iterator initialization is appended to |
8873 | *BODY_P. */ | |
773c5ba7 | 8874 | |
8875 | static void | |
75a70cf9 | 8876 | lower_omp_for_lastprivate (struct omp_for_data *fd, gimple_seq *body_p, |
8877 | gimple_seq *dlist, struct omp_context *ctx) | |
773c5ba7 | 8878 | { |
75a70cf9 | 8879 | tree clauses, cond, vinit; |
773c5ba7 | 8880 | enum tree_code cond_code; |
75a70cf9 | 8881 | gimple_seq stmts; |
48e1416a | 8882 | |
fd6481cf | 8883 | cond_code = fd->loop.cond_code; |
773c5ba7 | 8884 | cond_code = cond_code == LT_EXPR ? GE_EXPR : LE_EXPR; |
8885 | ||
8886 | /* When possible, use a strict equality expression. This can let VRP | |
8887 | type optimizations deduce the value and remove a copy. */ | |
35ec552a | 8888 | if (tree_fits_shwi_p (fd->loop.step)) |
773c5ba7 | 8889 | { |
8c53c46c | 8890 | HOST_WIDE_INT step = tree_to_shwi (fd->loop.step); |
773c5ba7 | 8891 | if (step == 1 || step == -1) |
8892 | cond_code = EQ_EXPR; | |
8893 | } | |
8894 | ||
fd6481cf | 8895 | cond = build2 (cond_code, boolean_type_node, fd->loop.v, fd->loop.n2); |
773c5ba7 | 8896 | |
75a70cf9 | 8897 | clauses = gimple_omp_for_clauses (fd->for_stmt); |
1e4afe3c | 8898 | stmts = NULL; |
8899 | lower_lastprivate_clauses (clauses, cond, &stmts, ctx); | |
75a70cf9 | 8900 | if (!gimple_seq_empty_p (stmts)) |
1e4afe3c | 8901 | { |
75a70cf9 | 8902 | gimple_seq_add_seq (&stmts, *dlist); |
fd6481cf | 8903 | *dlist = stmts; |
1e4afe3c | 8904 | |
8905 | /* Optimize: v = 0; is usually cheaper than v = some_other_constant. */ | |
fd6481cf | 8906 | vinit = fd->loop.n1; |
1e4afe3c | 8907 | if (cond_code == EQ_EXPR |
35ec552a | 8908 | && tree_fits_shwi_p (fd->loop.n2) |
fd6481cf | 8909 | && ! integer_zerop (fd->loop.n2)) |
8910 | vinit = build_int_cst (TREE_TYPE (fd->loop.v), 0); | |
3d483a94 | 8911 | else |
8912 | vinit = unshare_expr (vinit); | |
1e4afe3c | 8913 | |
8914 | /* Initialize the iterator variable, so that threads that don't execute | |
8915 | any iterations don't execute the lastprivate clauses by accident. */ | |
75a70cf9 | 8916 | gimplify_assign (fd->loop.v, vinit, body_p); |
1e4afe3c | 8917 | } |
773c5ba7 | 8918 | } |
8919 | ||
8920 | ||
8921 | /* Lower code for an OpenMP loop directive. */ | |
8922 | ||
8923 | static void | |
75a70cf9 | 8924 | lower_omp_for (gimple_stmt_iterator *gsi_p, omp_context *ctx) |
773c5ba7 | 8925 | { |
75a70cf9 | 8926 | tree *rhs_p, block; |
bc7bff74 | 8927 | struct omp_for_data fd, *fdp = NULL; |
75a70cf9 | 8928 | gimple stmt = gsi_stmt (*gsi_p), new_stmt; |
f018d957 | 8929 | gimple_seq omp_for_body, body, dlist; |
75a70cf9 | 8930 | size_t i; |
773c5ba7 | 8931 | |
8a4a28a8 | 8932 | push_gimplify_context (); |
773c5ba7 | 8933 | |
e3a19533 | 8934 | lower_omp (gimple_omp_for_pre_body_ptr (stmt), ctx); |
773c5ba7 | 8935 | |
1d22f541 | 8936 | block = make_node (BLOCK); |
75a70cf9 | 8937 | new_stmt = gimple_build_bind (NULL, NULL, block); |
e3a19533 | 8938 | /* Replace at gsi right away, so that 'stmt' is no member |
8939 | of a sequence anymore as we're going to add to to a different | |
8940 | one below. */ | |
8941 | gsi_replace (gsi_p, new_stmt, true); | |
1d22f541 | 8942 | |
773c5ba7 | 8943 | /* Move declaration of temporaries in the loop body before we make |
8944 | it go away. */ | |
75a70cf9 | 8945 | omp_for_body = gimple_omp_body (stmt); |
8946 | if (!gimple_seq_empty_p (omp_for_body) | |
8947 | && gimple_code (gimple_seq_first_stmt (omp_for_body)) == GIMPLE_BIND) | |
8948 | { | |
8949 | tree vars = gimple_bind_vars (gimple_seq_first_stmt (omp_for_body)); | |
8950 | gimple_bind_append_vars (new_stmt, vars); | |
8951 | } | |
773c5ba7 | 8952 | |
bc7bff74 | 8953 | if (gimple_omp_for_combined_into_p (stmt)) |
8954 | { | |
8955 | extract_omp_for_data (stmt, &fd, NULL); | |
8956 | fdp = &fd; | |
8957 | ||
8958 | /* We need two temporaries with fd.loop.v type (istart/iend) | |
8959 | and then (fd.collapse - 1) temporaries with the same | |
8960 | type for count2 ... countN-1 vars if not constant. */ | |
8961 | size_t count = 2; | |
8962 | tree type = fd.iter_type; | |
8963 | if (fd.collapse > 1 | |
8964 | && TREE_CODE (fd.loop.n2) != INTEGER_CST) | |
8965 | count += fd.collapse - 1; | |
8966 | bool parallel_for = gimple_omp_for_kind (stmt) == GF_OMP_FOR_KIND_FOR; | |
8967 | tree outerc = NULL, *pc = gimple_omp_for_clauses_ptr (stmt); | |
8968 | tree clauses = *pc; | |
8969 | if (parallel_for) | |
8970 | outerc | |
8971 | = find_omp_clause (gimple_omp_parallel_clauses (ctx->outer->stmt), | |
8972 | OMP_CLAUSE__LOOPTEMP_); | |
8973 | for (i = 0; i < count; i++) | |
8974 | { | |
8975 | tree temp; | |
8976 | if (parallel_for) | |
8977 | { | |
8978 | gcc_assert (outerc); | |
8979 | temp = lookup_decl (OMP_CLAUSE_DECL (outerc), ctx->outer); | |
8980 | outerc = find_omp_clause (OMP_CLAUSE_CHAIN (outerc), | |
8981 | OMP_CLAUSE__LOOPTEMP_); | |
8982 | } | |
8983 | else | |
8984 | temp = create_tmp_var (type, NULL); | |
8985 | *pc = build_omp_clause (UNKNOWN_LOCATION, OMP_CLAUSE__LOOPTEMP_); | |
8986 | OMP_CLAUSE_DECL (*pc) = temp; | |
8987 | pc = &OMP_CLAUSE_CHAIN (*pc); | |
8988 | } | |
8989 | *pc = clauses; | |
8990 | } | |
8991 | ||
75a70cf9 | 8992 | /* The pre-body and input clauses go before the lowered GIMPLE_OMP_FOR. */ |
773c5ba7 | 8993 | dlist = NULL; |
75a70cf9 | 8994 | body = NULL; |
bc7bff74 | 8995 | lower_rec_input_clauses (gimple_omp_for_clauses (stmt), &body, &dlist, ctx, |
8996 | fdp); | |
75a70cf9 | 8997 | gimple_seq_add_seq (&body, gimple_omp_for_pre_body (stmt)); |
773c5ba7 | 8998 | |
3d483a94 | 8999 | lower_omp (gimple_omp_body_ptr (stmt), ctx); |
9000 | ||
773c5ba7 | 9001 | /* Lower the header expressions. At this point, we can assume that |
9002 | the header is of the form: | |
9003 | ||
9004 | #pragma omp for (V = VAL1; V {<|>|<=|>=} VAL2; V = V [+-] VAL3) | |
9005 | ||
9006 | We just need to make sure that VAL1, VAL2 and VAL3 are lowered | |
9007 | using the .omp_data_s mapping, if needed. */ | |
75a70cf9 | 9008 | for (i = 0; i < gimple_omp_for_collapse (stmt); i++) |
fd6481cf | 9009 | { |
75a70cf9 | 9010 | rhs_p = gimple_omp_for_initial_ptr (stmt, i); |
fd6481cf | 9011 | if (!is_gimple_min_invariant (*rhs_p)) |
75a70cf9 | 9012 | *rhs_p = get_formal_tmp_var (*rhs_p, &body); |
fd6481cf | 9013 | |
75a70cf9 | 9014 | rhs_p = gimple_omp_for_final_ptr (stmt, i); |
fd6481cf | 9015 | if (!is_gimple_min_invariant (*rhs_p)) |
75a70cf9 | 9016 | *rhs_p = get_formal_tmp_var (*rhs_p, &body); |
fd6481cf | 9017 | |
75a70cf9 | 9018 | rhs_p = &TREE_OPERAND (gimple_omp_for_incr (stmt, i), 1); |
fd6481cf | 9019 | if (!is_gimple_min_invariant (*rhs_p)) |
75a70cf9 | 9020 | *rhs_p = get_formal_tmp_var (*rhs_p, &body); |
fd6481cf | 9021 | } |
773c5ba7 | 9022 | |
9023 | /* Once lowered, extract the bounds and clauses. */ | |
fd6481cf | 9024 | extract_omp_for_data (stmt, &fd, NULL); |
773c5ba7 | 9025 | |
75a70cf9 | 9026 | lower_omp_for_lastprivate (&fd, &body, &dlist, ctx); |
773c5ba7 | 9027 | |
75a70cf9 | 9028 | gimple_seq_add_stmt (&body, stmt); |
9029 | gimple_seq_add_seq (&body, gimple_omp_body (stmt)); | |
61e47ac8 | 9030 | |
75a70cf9 | 9031 | gimple_seq_add_stmt (&body, gimple_build_omp_continue (fd.loop.v, |
9032 | fd.loop.v)); | |
61e47ac8 | 9033 | |
773c5ba7 | 9034 | /* After the loop, add exit clauses. */ |
75a70cf9 | 9035 | lower_reduction_clauses (gimple_omp_for_clauses (stmt), &body, ctx); |
bc7bff74 | 9036 | |
9037 | if (ctx->cancellable) | |
9038 | gimple_seq_add_stmt (&body, gimple_build_label (ctx->cancel_label)); | |
9039 | ||
75a70cf9 | 9040 | gimple_seq_add_seq (&body, dlist); |
773c5ba7 | 9041 | |
75a70cf9 | 9042 | body = maybe_catch_exception (body); |
aade31a0 | 9043 | |
61e47ac8 | 9044 | /* Region exit marker goes at the end of the loop body. */ |
75a70cf9 | 9045 | gimple_seq_add_stmt (&body, gimple_build_omp_return (fd.have_nowait)); |
bc7bff74 | 9046 | maybe_add_implicit_barrier_cancel (ctx, &body); |
1d22f541 | 9047 | pop_gimplify_context (new_stmt); |
75a70cf9 | 9048 | |
9049 | gimple_bind_append_vars (new_stmt, ctx->block_vars); | |
9050 | BLOCK_VARS (block) = gimple_bind_vars (new_stmt); | |
1d22f541 | 9051 | if (BLOCK_VARS (block)) |
9052 | TREE_USED (block) = 1; | |
773c5ba7 | 9053 | |
75a70cf9 | 9054 | gimple_bind_set_body (new_stmt, body); |
9055 | gimple_omp_set_body (stmt, NULL); | |
9056 | gimple_omp_for_set_pre_body (stmt, NULL); | |
1e8e9920 | 9057 | } |
9058 | ||
48e1416a | 9059 | /* Callback for walk_stmts. Check if the current statement only contains |
a7dfc4fe | 9060 | GIMPLE_OMP_FOR or GIMPLE_OMP_SECTIONS. */ |
de7ef844 | 9061 | |
9062 | static tree | |
75a70cf9 | 9063 | check_combined_parallel (gimple_stmt_iterator *gsi_p, |
9064 | bool *handled_ops_p, | |
9065 | struct walk_stmt_info *wi) | |
de7ef844 | 9066 | { |
4077bf7a | 9067 | int *info = (int *) wi->info; |
75a70cf9 | 9068 | gimple stmt = gsi_stmt (*gsi_p); |
de7ef844 | 9069 | |
75a70cf9 | 9070 | *handled_ops_p = true; |
9071 | switch (gimple_code (stmt)) | |
de7ef844 | 9072 | { |
75a70cf9 | 9073 | WALK_SUBSTMTS; |
9074 | ||
9075 | case GIMPLE_OMP_FOR: | |
9076 | case GIMPLE_OMP_SECTIONS: | |
de7ef844 | 9077 | *info = *info == 0 ? 1 : -1; |
9078 | break; | |
9079 | default: | |
9080 | *info = -1; | |
9081 | break; | |
9082 | } | |
9083 | return NULL; | |
9084 | } | |
773c5ba7 | 9085 | |
fd6481cf | 9086 | struct omp_taskcopy_context |
9087 | { | |
9088 | /* This field must be at the beginning, as we do "inheritance": Some | |
9089 | callback functions for tree-inline.c (e.g., omp_copy_decl) | |
9090 | receive a copy_body_data pointer that is up-casted to an | |
9091 | omp_context pointer. */ | |
9092 | copy_body_data cb; | |
9093 | omp_context *ctx; | |
9094 | }; | |
9095 | ||
9096 | static tree | |
9097 | task_copyfn_copy_decl (tree var, copy_body_data *cb) | |
9098 | { | |
9099 | struct omp_taskcopy_context *tcctx = (struct omp_taskcopy_context *) cb; | |
9100 | ||
9101 | if (splay_tree_lookup (tcctx->ctx->sfield_map, (splay_tree_key) var)) | |
9102 | return create_tmp_var (TREE_TYPE (var), NULL); | |
9103 | ||
9104 | return var; | |
9105 | } | |
9106 | ||
9107 | static tree | |
9108 | task_copyfn_remap_type (struct omp_taskcopy_context *tcctx, tree orig_type) | |
9109 | { | |
9110 | tree name, new_fields = NULL, type, f; | |
9111 | ||
9112 | type = lang_hooks.types.make_type (RECORD_TYPE); | |
9113 | name = DECL_NAME (TYPE_NAME (orig_type)); | |
e60a6f7b | 9114 | name = build_decl (gimple_location (tcctx->ctx->stmt), |
9115 | TYPE_DECL, name, type); | |
fd6481cf | 9116 | TYPE_NAME (type) = name; |
9117 | ||
9118 | for (f = TYPE_FIELDS (orig_type); f ; f = TREE_CHAIN (f)) | |
9119 | { | |
9120 | tree new_f = copy_node (f); | |
9121 | DECL_CONTEXT (new_f) = type; | |
9122 | TREE_TYPE (new_f) = remap_type (TREE_TYPE (f), &tcctx->cb); | |
9123 | TREE_CHAIN (new_f) = new_fields; | |
75a70cf9 | 9124 | walk_tree (&DECL_SIZE (new_f), copy_tree_body_r, &tcctx->cb, NULL); |
9125 | walk_tree (&DECL_SIZE_UNIT (new_f), copy_tree_body_r, &tcctx->cb, NULL); | |
9126 | walk_tree (&DECL_FIELD_OFFSET (new_f), copy_tree_body_r, | |
9127 | &tcctx->cb, NULL); | |
fd6481cf | 9128 | new_fields = new_f; |
9129 | *pointer_map_insert (tcctx->cb.decl_map, f) = new_f; | |
9130 | } | |
9131 | TYPE_FIELDS (type) = nreverse (new_fields); | |
9132 | layout_type (type); | |
9133 | return type; | |
9134 | } | |
9135 | ||
9136 | /* Create task copyfn. */ | |
9137 | ||
9138 | static void | |
75a70cf9 | 9139 | create_task_copyfn (gimple task_stmt, omp_context *ctx) |
fd6481cf | 9140 | { |
9141 | struct function *child_cfun; | |
9142 | tree child_fn, t, c, src, dst, f, sf, arg, sarg, decl; | |
9143 | tree record_type, srecord_type, bind, list; | |
9144 | bool record_needs_remap = false, srecord_needs_remap = false; | |
9145 | splay_tree_node n; | |
9146 | struct omp_taskcopy_context tcctx; | |
389dd41b | 9147 | location_t loc = gimple_location (task_stmt); |
fd6481cf | 9148 | |
75a70cf9 | 9149 | child_fn = gimple_omp_task_copy_fn (task_stmt); |
fd6481cf | 9150 | child_cfun = DECL_STRUCT_FUNCTION (child_fn); |
9151 | gcc_assert (child_cfun->cfg == NULL); | |
fd6481cf | 9152 | DECL_SAVED_TREE (child_fn) = alloc_stmt_list (); |
9153 | ||
9154 | /* Reset DECL_CONTEXT on function arguments. */ | |
1767a056 | 9155 | for (t = DECL_ARGUMENTS (child_fn); t; t = DECL_CHAIN (t)) |
fd6481cf | 9156 | DECL_CONTEXT (t) = child_fn; |
9157 | ||
9158 | /* Populate the function. */ | |
8a4a28a8 | 9159 | push_gimplify_context (); |
9078126c | 9160 | push_cfun (child_cfun); |
fd6481cf | 9161 | |
9162 | bind = build3 (BIND_EXPR, void_type_node, NULL, NULL, NULL); | |
9163 | TREE_SIDE_EFFECTS (bind) = 1; | |
9164 | list = NULL; | |
9165 | DECL_SAVED_TREE (child_fn) = bind; | |
75a70cf9 | 9166 | DECL_SOURCE_LOCATION (child_fn) = gimple_location (task_stmt); |
fd6481cf | 9167 | |
9168 | /* Remap src and dst argument types if needed. */ | |
9169 | record_type = ctx->record_type; | |
9170 | srecord_type = ctx->srecord_type; | |
1767a056 | 9171 | for (f = TYPE_FIELDS (record_type); f ; f = DECL_CHAIN (f)) |
fd6481cf | 9172 | if (variably_modified_type_p (TREE_TYPE (f), ctx->cb.src_fn)) |
9173 | { | |
9174 | record_needs_remap = true; | |
9175 | break; | |
9176 | } | |
1767a056 | 9177 | for (f = TYPE_FIELDS (srecord_type); f ; f = DECL_CHAIN (f)) |
fd6481cf | 9178 | if (variably_modified_type_p (TREE_TYPE (f), ctx->cb.src_fn)) |
9179 | { | |
9180 | srecord_needs_remap = true; | |
9181 | break; | |
9182 | } | |
9183 | ||
9184 | if (record_needs_remap || srecord_needs_remap) | |
9185 | { | |
9186 | memset (&tcctx, '\0', sizeof (tcctx)); | |
9187 | tcctx.cb.src_fn = ctx->cb.src_fn; | |
9188 | tcctx.cb.dst_fn = child_fn; | |
53f79206 | 9189 | tcctx.cb.src_node = cgraph_get_node (tcctx.cb.src_fn); |
9190 | gcc_checking_assert (tcctx.cb.src_node); | |
fd6481cf | 9191 | tcctx.cb.dst_node = tcctx.cb.src_node; |
9192 | tcctx.cb.src_cfun = ctx->cb.src_cfun; | |
9193 | tcctx.cb.copy_decl = task_copyfn_copy_decl; | |
e38def9c | 9194 | tcctx.cb.eh_lp_nr = 0; |
fd6481cf | 9195 | tcctx.cb.transform_call_graph_edges = CB_CGE_MOVE; |
9196 | tcctx.cb.decl_map = pointer_map_create (); | |
9197 | tcctx.ctx = ctx; | |
9198 | ||
9199 | if (record_needs_remap) | |
9200 | record_type = task_copyfn_remap_type (&tcctx, record_type); | |
9201 | if (srecord_needs_remap) | |
9202 | srecord_type = task_copyfn_remap_type (&tcctx, srecord_type); | |
9203 | } | |
9204 | else | |
9205 | tcctx.cb.decl_map = NULL; | |
9206 | ||
fd6481cf | 9207 | arg = DECL_ARGUMENTS (child_fn); |
9208 | TREE_TYPE (arg) = build_pointer_type (record_type); | |
1767a056 | 9209 | sarg = DECL_CHAIN (arg); |
fd6481cf | 9210 | TREE_TYPE (sarg) = build_pointer_type (srecord_type); |
9211 | ||
9212 | /* First pass: initialize temporaries used in record_type and srecord_type | |
9213 | sizes and field offsets. */ | |
9214 | if (tcctx.cb.decl_map) | |
75a70cf9 | 9215 | for (c = gimple_omp_task_clauses (task_stmt); c; c = OMP_CLAUSE_CHAIN (c)) |
fd6481cf | 9216 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_FIRSTPRIVATE) |
9217 | { | |
9218 | tree *p; | |
9219 | ||
9220 | decl = OMP_CLAUSE_DECL (c); | |
9221 | p = (tree *) pointer_map_contains (tcctx.cb.decl_map, decl); | |
9222 | if (p == NULL) | |
9223 | continue; | |
9224 | n = splay_tree_lookup (ctx->sfield_map, (splay_tree_key) decl); | |
9225 | sf = (tree) n->value; | |
9226 | sf = *(tree *) pointer_map_contains (tcctx.cb.decl_map, sf); | |
182cf5a9 | 9227 | src = build_simple_mem_ref_loc (loc, sarg); |
445d06b6 | 9228 | src = omp_build_component_ref (src, sf); |
75a70cf9 | 9229 | t = build2 (MODIFY_EXPR, TREE_TYPE (*p), *p, src); |
fd6481cf | 9230 | append_to_statement_list (t, &list); |
9231 | } | |
9232 | ||
9233 | /* Second pass: copy shared var pointers and copy construct non-VLA | |
9234 | firstprivate vars. */ | |
75a70cf9 | 9235 | for (c = gimple_omp_task_clauses (task_stmt); c; c = OMP_CLAUSE_CHAIN (c)) |
fd6481cf | 9236 | switch (OMP_CLAUSE_CODE (c)) |
9237 | { | |
9238 | case OMP_CLAUSE_SHARED: | |
9239 | decl = OMP_CLAUSE_DECL (c); | |
9240 | n = splay_tree_lookup (ctx->field_map, (splay_tree_key) decl); | |
9241 | if (n == NULL) | |
9242 | break; | |
9243 | f = (tree) n->value; | |
9244 | if (tcctx.cb.decl_map) | |
9245 | f = *(tree *) pointer_map_contains (tcctx.cb.decl_map, f); | |
9246 | n = splay_tree_lookup (ctx->sfield_map, (splay_tree_key) decl); | |
9247 | sf = (tree) n->value; | |
9248 | if (tcctx.cb.decl_map) | |
9249 | sf = *(tree *) pointer_map_contains (tcctx.cb.decl_map, sf); | |
182cf5a9 | 9250 | src = build_simple_mem_ref_loc (loc, sarg); |
445d06b6 | 9251 | src = omp_build_component_ref (src, sf); |
182cf5a9 | 9252 | dst = build_simple_mem_ref_loc (loc, arg); |
445d06b6 | 9253 | dst = omp_build_component_ref (dst, f); |
75a70cf9 | 9254 | t = build2 (MODIFY_EXPR, TREE_TYPE (dst), dst, src); |
fd6481cf | 9255 | append_to_statement_list (t, &list); |
9256 | break; | |
9257 | case OMP_CLAUSE_FIRSTPRIVATE: | |
9258 | decl = OMP_CLAUSE_DECL (c); | |
9259 | if (is_variable_sized (decl)) | |
9260 | break; | |
9261 | n = splay_tree_lookup (ctx->field_map, (splay_tree_key) decl); | |
9262 | if (n == NULL) | |
9263 | break; | |
9264 | f = (tree) n->value; | |
9265 | if (tcctx.cb.decl_map) | |
9266 | f = *(tree *) pointer_map_contains (tcctx.cb.decl_map, f); | |
9267 | n = splay_tree_lookup (ctx->sfield_map, (splay_tree_key) decl); | |
9268 | if (n != NULL) | |
9269 | { | |
9270 | sf = (tree) n->value; | |
9271 | if (tcctx.cb.decl_map) | |
9272 | sf = *(tree *) pointer_map_contains (tcctx.cb.decl_map, sf); | |
182cf5a9 | 9273 | src = build_simple_mem_ref_loc (loc, sarg); |
445d06b6 | 9274 | src = omp_build_component_ref (src, sf); |
fd6481cf | 9275 | if (use_pointer_for_field (decl, NULL) || is_reference (decl)) |
182cf5a9 | 9276 | src = build_simple_mem_ref_loc (loc, src); |
fd6481cf | 9277 | } |
9278 | else | |
9279 | src = decl; | |
182cf5a9 | 9280 | dst = build_simple_mem_ref_loc (loc, arg); |
445d06b6 | 9281 | dst = omp_build_component_ref (dst, f); |
fd6481cf | 9282 | t = lang_hooks.decls.omp_clause_copy_ctor (c, dst, src); |
9283 | append_to_statement_list (t, &list); | |
9284 | break; | |
9285 | case OMP_CLAUSE_PRIVATE: | |
9286 | if (! OMP_CLAUSE_PRIVATE_OUTER_REF (c)) | |
9287 | break; | |
9288 | decl = OMP_CLAUSE_DECL (c); | |
9289 | n = splay_tree_lookup (ctx->field_map, (splay_tree_key) decl); | |
9290 | f = (tree) n->value; | |
9291 | if (tcctx.cb.decl_map) | |
9292 | f = *(tree *) pointer_map_contains (tcctx.cb.decl_map, f); | |
9293 | n = splay_tree_lookup (ctx->sfield_map, (splay_tree_key) decl); | |
9294 | if (n != NULL) | |
9295 | { | |
9296 | sf = (tree) n->value; | |
9297 | if (tcctx.cb.decl_map) | |
9298 | sf = *(tree *) pointer_map_contains (tcctx.cb.decl_map, sf); | |
182cf5a9 | 9299 | src = build_simple_mem_ref_loc (loc, sarg); |
445d06b6 | 9300 | src = omp_build_component_ref (src, sf); |
fd6481cf | 9301 | if (use_pointer_for_field (decl, NULL)) |
182cf5a9 | 9302 | src = build_simple_mem_ref_loc (loc, src); |
fd6481cf | 9303 | } |
9304 | else | |
9305 | src = decl; | |
182cf5a9 | 9306 | dst = build_simple_mem_ref_loc (loc, arg); |
445d06b6 | 9307 | dst = omp_build_component_ref (dst, f); |
75a70cf9 | 9308 | t = build2 (MODIFY_EXPR, TREE_TYPE (dst), dst, src); |
fd6481cf | 9309 | append_to_statement_list (t, &list); |
9310 | break; | |
9311 | default: | |
9312 | break; | |
9313 | } | |
9314 | ||
9315 | /* Last pass: handle VLA firstprivates. */ | |
9316 | if (tcctx.cb.decl_map) | |
75a70cf9 | 9317 | for (c = gimple_omp_task_clauses (task_stmt); c; c = OMP_CLAUSE_CHAIN (c)) |
fd6481cf | 9318 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_FIRSTPRIVATE) |
9319 | { | |
9320 | tree ind, ptr, df; | |
9321 | ||
9322 | decl = OMP_CLAUSE_DECL (c); | |
9323 | if (!is_variable_sized (decl)) | |
9324 | continue; | |
9325 | n = splay_tree_lookup (ctx->field_map, (splay_tree_key) decl); | |
9326 | if (n == NULL) | |
9327 | continue; | |
9328 | f = (tree) n->value; | |
9329 | f = *(tree *) pointer_map_contains (tcctx.cb.decl_map, f); | |
9330 | gcc_assert (DECL_HAS_VALUE_EXPR_P (decl)); | |
9331 | ind = DECL_VALUE_EXPR (decl); | |
9332 | gcc_assert (TREE_CODE (ind) == INDIRECT_REF); | |
9333 | gcc_assert (DECL_P (TREE_OPERAND (ind, 0))); | |
9334 | n = splay_tree_lookup (ctx->sfield_map, | |
9335 | (splay_tree_key) TREE_OPERAND (ind, 0)); | |
9336 | sf = (tree) n->value; | |
9337 | sf = *(tree *) pointer_map_contains (tcctx.cb.decl_map, sf); | |
182cf5a9 | 9338 | src = build_simple_mem_ref_loc (loc, sarg); |
445d06b6 | 9339 | src = omp_build_component_ref (src, sf); |
182cf5a9 | 9340 | src = build_simple_mem_ref_loc (loc, src); |
9341 | dst = build_simple_mem_ref_loc (loc, arg); | |
445d06b6 | 9342 | dst = omp_build_component_ref (dst, f); |
fd6481cf | 9343 | t = lang_hooks.decls.omp_clause_copy_ctor (c, dst, src); |
9344 | append_to_statement_list (t, &list); | |
9345 | n = splay_tree_lookup (ctx->field_map, | |
9346 | (splay_tree_key) TREE_OPERAND (ind, 0)); | |
9347 | df = (tree) n->value; | |
9348 | df = *(tree *) pointer_map_contains (tcctx.cb.decl_map, df); | |
182cf5a9 | 9349 | ptr = build_simple_mem_ref_loc (loc, arg); |
445d06b6 | 9350 | ptr = omp_build_component_ref (ptr, df); |
75a70cf9 | 9351 | t = build2 (MODIFY_EXPR, TREE_TYPE (ptr), ptr, |
389dd41b | 9352 | build_fold_addr_expr_loc (loc, dst)); |
fd6481cf | 9353 | append_to_statement_list (t, &list); |
9354 | } | |
9355 | ||
9356 | t = build1 (RETURN_EXPR, void_type_node, NULL); | |
9357 | append_to_statement_list (t, &list); | |
9358 | ||
9359 | if (tcctx.cb.decl_map) | |
9360 | pointer_map_destroy (tcctx.cb.decl_map); | |
9361 | pop_gimplify_context (NULL); | |
9362 | BIND_EXPR_BODY (bind) = list; | |
9363 | pop_cfun (); | |
fd6481cf | 9364 | } |
9365 | ||
bc7bff74 | 9366 | static void |
9367 | lower_depend_clauses (gimple stmt, gimple_seq *iseq, gimple_seq *oseq) | |
9368 | { | |
9369 | tree c, clauses; | |
9370 | gimple g; | |
9371 | size_t n_in = 0, n_out = 0, idx = 2, i; | |
9372 | ||
9373 | clauses = find_omp_clause (gimple_omp_task_clauses (stmt), | |
9374 | OMP_CLAUSE_DEPEND); | |
9375 | gcc_assert (clauses); | |
9376 | for (c = clauses; c; c = OMP_CLAUSE_CHAIN (c)) | |
9377 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_DEPEND) | |
9378 | switch (OMP_CLAUSE_DEPEND_KIND (c)) | |
9379 | { | |
9380 | case OMP_CLAUSE_DEPEND_IN: | |
9381 | n_in++; | |
9382 | break; | |
9383 | case OMP_CLAUSE_DEPEND_OUT: | |
9384 | case OMP_CLAUSE_DEPEND_INOUT: | |
9385 | n_out++; | |
9386 | break; | |
9387 | default: | |
9388 | gcc_unreachable (); | |
9389 | } | |
9390 | tree type = build_array_type_nelts (ptr_type_node, n_in + n_out + 2); | |
9391 | tree array = create_tmp_var (type, NULL); | |
9392 | tree r = build4 (ARRAY_REF, ptr_type_node, array, size_int (0), NULL_TREE, | |
9393 | NULL_TREE); | |
9394 | g = gimple_build_assign (r, build_int_cst (ptr_type_node, n_in + n_out)); | |
9395 | gimple_seq_add_stmt (iseq, g); | |
9396 | r = build4 (ARRAY_REF, ptr_type_node, array, size_int (1), NULL_TREE, | |
9397 | NULL_TREE); | |
9398 | g = gimple_build_assign (r, build_int_cst (ptr_type_node, n_out)); | |
9399 | gimple_seq_add_stmt (iseq, g); | |
9400 | for (i = 0; i < 2; i++) | |
9401 | { | |
9402 | if ((i ? n_in : n_out) == 0) | |
9403 | continue; | |
9404 | for (c = clauses; c; c = OMP_CLAUSE_CHAIN (c)) | |
9405 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_DEPEND | |
9406 | && ((OMP_CLAUSE_DEPEND_KIND (c) != OMP_CLAUSE_DEPEND_IN) ^ i)) | |
9407 | { | |
9408 | tree t = OMP_CLAUSE_DECL (c); | |
9409 | t = fold_convert (ptr_type_node, t); | |
9410 | gimplify_expr (&t, iseq, NULL, is_gimple_val, fb_rvalue); | |
9411 | r = build4 (ARRAY_REF, ptr_type_node, array, size_int (idx++), | |
9412 | NULL_TREE, NULL_TREE); | |
9413 | g = gimple_build_assign (r, t); | |
9414 | gimple_seq_add_stmt (iseq, g); | |
9415 | } | |
9416 | } | |
9417 | tree *p = gimple_omp_task_clauses_ptr (stmt); | |
9418 | c = build_omp_clause (UNKNOWN_LOCATION, OMP_CLAUSE_DEPEND); | |
9419 | OMP_CLAUSE_DECL (c) = build_fold_addr_expr (array); | |
9420 | OMP_CLAUSE_CHAIN (c) = *p; | |
9421 | *p = c; | |
9422 | tree clobber = build_constructor (type, NULL); | |
9423 | TREE_THIS_VOLATILE (clobber) = 1; | |
9424 | g = gimple_build_assign (array, clobber); | |
9425 | gimple_seq_add_stmt (oseq, g); | |
9426 | } | |
9427 | ||
75a70cf9 | 9428 | /* Lower the OpenMP parallel or task directive in the current statement |
9429 | in GSI_P. CTX holds context information for the directive. */ | |
773c5ba7 | 9430 | |
9431 | static void | |
75a70cf9 | 9432 | lower_omp_taskreg (gimple_stmt_iterator *gsi_p, omp_context *ctx) |
773c5ba7 | 9433 | { |
75a70cf9 | 9434 | tree clauses; |
9435 | tree child_fn, t; | |
9436 | gimple stmt = gsi_stmt (*gsi_p); | |
bc7bff74 | 9437 | gimple par_bind, bind, dep_bind = NULL; |
9438 | gimple_seq par_body, olist, ilist, par_olist, par_rlist, par_ilist, new_body; | |
389dd41b | 9439 | location_t loc = gimple_location (stmt); |
773c5ba7 | 9440 | |
75a70cf9 | 9441 | clauses = gimple_omp_taskreg_clauses (stmt); |
9442 | par_bind = gimple_seq_first_stmt (gimple_omp_body (stmt)); | |
9443 | par_body = gimple_bind_body (par_bind); | |
773c5ba7 | 9444 | child_fn = ctx->cb.dst_fn; |
75a70cf9 | 9445 | if (gimple_code (stmt) == GIMPLE_OMP_PARALLEL |
9446 | && !gimple_omp_parallel_combined_p (stmt)) | |
de7ef844 | 9447 | { |
9448 | struct walk_stmt_info wi; | |
9449 | int ws_num = 0; | |
9450 | ||
9451 | memset (&wi, 0, sizeof (wi)); | |
de7ef844 | 9452 | wi.info = &ws_num; |
9453 | wi.val_only = true; | |
75a70cf9 | 9454 | walk_gimple_seq (par_body, check_combined_parallel, NULL, &wi); |
de7ef844 | 9455 | if (ws_num == 1) |
75a70cf9 | 9456 | gimple_omp_parallel_set_combined_p (stmt, true); |
de7ef844 | 9457 | } |
bc7bff74 | 9458 | gimple_seq dep_ilist = NULL; |
9459 | gimple_seq dep_olist = NULL; | |
9460 | if (gimple_code (stmt) == GIMPLE_OMP_TASK | |
9461 | && find_omp_clause (clauses, OMP_CLAUSE_DEPEND)) | |
9462 | { | |
8a4a28a8 | 9463 | push_gimplify_context (); |
bc7bff74 | 9464 | dep_bind = gimple_build_bind (NULL, NULL, make_node (BLOCK)); |
9465 | lower_depend_clauses (stmt, &dep_ilist, &dep_olist); | |
9466 | } | |
9467 | ||
fd6481cf | 9468 | if (ctx->srecord_type) |
9469 | create_task_copyfn (stmt, ctx); | |
773c5ba7 | 9470 | |
8a4a28a8 | 9471 | push_gimplify_context (); |
773c5ba7 | 9472 | |
75a70cf9 | 9473 | par_olist = NULL; |
9474 | par_ilist = NULL; | |
bc7bff74 | 9475 | par_rlist = NULL; |
9476 | lower_rec_input_clauses (clauses, &par_ilist, &par_olist, ctx, NULL); | |
e3a19533 | 9477 | lower_omp (&par_body, ctx); |
75a70cf9 | 9478 | if (gimple_code (stmt) == GIMPLE_OMP_PARALLEL) |
bc7bff74 | 9479 | lower_reduction_clauses (clauses, &par_rlist, ctx); |
773c5ba7 | 9480 | |
9481 | /* Declare all the variables created by mapping and the variables | |
9482 | declared in the scope of the parallel body. */ | |
9483 | record_vars_into (ctx->block_vars, child_fn); | |
75a70cf9 | 9484 | record_vars_into (gimple_bind_vars (par_bind), child_fn); |
773c5ba7 | 9485 | |
9486 | if (ctx->record_type) | |
9487 | { | |
fd6481cf | 9488 | ctx->sender_decl |
9489 | = create_tmp_var (ctx->srecord_type ? ctx->srecord_type | |
9490 | : ctx->record_type, ".omp_data_o"); | |
84bfaaeb | 9491 | DECL_NAMELESS (ctx->sender_decl) = 1; |
86f2ad37 | 9492 | TREE_ADDRESSABLE (ctx->sender_decl) = 1; |
75a70cf9 | 9493 | gimple_omp_taskreg_set_data_arg (stmt, ctx->sender_decl); |
773c5ba7 | 9494 | } |
9495 | ||
75a70cf9 | 9496 | olist = NULL; |
9497 | ilist = NULL; | |
773c5ba7 | 9498 | lower_send_clauses (clauses, &ilist, &olist, ctx); |
9499 | lower_send_shared_vars (&ilist, &olist, ctx); | |
9500 | ||
bc7bff74 | 9501 | if (ctx->record_type) |
9502 | { | |
9503 | tree clobber = build_constructor (TREE_TYPE (ctx->sender_decl), NULL); | |
9504 | TREE_THIS_VOLATILE (clobber) = 1; | |
9505 | gimple_seq_add_stmt (&olist, gimple_build_assign (ctx->sender_decl, | |
9506 | clobber)); | |
9507 | } | |
9508 | ||
773c5ba7 | 9509 | /* Once all the expansions are done, sequence all the different |
75a70cf9 | 9510 | fragments inside gimple_omp_body. */ |
773c5ba7 | 9511 | |
75a70cf9 | 9512 | new_body = NULL; |
773c5ba7 | 9513 | |
9514 | if (ctx->record_type) | |
9515 | { | |
389dd41b | 9516 | t = build_fold_addr_expr_loc (loc, ctx->sender_decl); |
cc6b725b | 9517 | /* fixup_child_record_type might have changed receiver_decl's type. */ |
389dd41b | 9518 | t = fold_convert_loc (loc, TREE_TYPE (ctx->receiver_decl), t); |
75a70cf9 | 9519 | gimple_seq_add_stmt (&new_body, |
9520 | gimple_build_assign (ctx->receiver_decl, t)); | |
773c5ba7 | 9521 | } |
9522 | ||
75a70cf9 | 9523 | gimple_seq_add_seq (&new_body, par_ilist); |
9524 | gimple_seq_add_seq (&new_body, par_body); | |
bc7bff74 | 9525 | gimple_seq_add_seq (&new_body, par_rlist); |
9526 | if (ctx->cancellable) | |
9527 | gimple_seq_add_stmt (&new_body, gimple_build_label (ctx->cancel_label)); | |
75a70cf9 | 9528 | gimple_seq_add_seq (&new_body, par_olist); |
9529 | new_body = maybe_catch_exception (new_body); | |
9530 | gimple_seq_add_stmt (&new_body, gimple_build_omp_return (false)); | |
9531 | gimple_omp_set_body (stmt, new_body); | |
773c5ba7 | 9532 | |
75a70cf9 | 9533 | bind = gimple_build_bind (NULL, NULL, gimple_bind_block (par_bind)); |
bc7bff74 | 9534 | gsi_replace (gsi_p, dep_bind ? dep_bind : bind, true); |
9535 | gimple_bind_add_seq (bind, ilist); | |
9536 | gimple_bind_add_stmt (bind, stmt); | |
9537 | gimple_bind_add_seq (bind, olist); | |
9538 | ||
9539 | pop_gimplify_context (NULL); | |
9540 | ||
9541 | if (dep_bind) | |
9542 | { | |
9543 | gimple_bind_add_seq (dep_bind, dep_ilist); | |
9544 | gimple_bind_add_stmt (dep_bind, bind); | |
9545 | gimple_bind_add_seq (dep_bind, dep_olist); | |
9546 | pop_gimplify_context (dep_bind); | |
9547 | } | |
9548 | } | |
9549 | ||
9550 | /* Lower the OpenMP target directive in the current statement | |
9551 | in GSI_P. CTX holds context information for the directive. */ | |
9552 | ||
9553 | static void | |
9554 | lower_omp_target (gimple_stmt_iterator *gsi_p, omp_context *ctx) | |
9555 | { | |
9556 | tree clauses; | |
9557 | tree child_fn, t, c; | |
9558 | gimple stmt = gsi_stmt (*gsi_p); | |
9559 | gimple tgt_bind = NULL, bind; | |
9560 | gimple_seq tgt_body = NULL, olist, ilist, new_body; | |
bc7bff74 | 9561 | location_t loc = gimple_location (stmt); |
9562 | int kind = gimple_omp_target_kind (stmt); | |
9563 | unsigned int map_cnt = 0; | |
9564 | ||
9565 | clauses = gimple_omp_target_clauses (stmt); | |
9566 | if (kind == GF_OMP_TARGET_KIND_REGION) | |
9567 | { | |
9568 | tgt_bind = gimple_seq_first_stmt (gimple_omp_body (stmt)); | |
9569 | tgt_body = gimple_bind_body (tgt_bind); | |
9570 | } | |
9571 | else if (kind == GF_OMP_TARGET_KIND_DATA) | |
9572 | tgt_body = gimple_omp_body (stmt); | |
9573 | child_fn = ctx->cb.dst_fn; | |
9574 | ||
8a4a28a8 | 9575 | push_gimplify_context (); |
bc7bff74 | 9576 | |
9577 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
9578 | switch (OMP_CLAUSE_CODE (c)) | |
9579 | { | |
9580 | tree var, x; | |
9581 | ||
9582 | default: | |
9583 | break; | |
9584 | case OMP_CLAUSE_MAP: | |
9585 | case OMP_CLAUSE_TO: | |
9586 | case OMP_CLAUSE_FROM: | |
9587 | var = OMP_CLAUSE_DECL (c); | |
9588 | if (!DECL_P (var)) | |
9589 | { | |
9590 | if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_MAP | |
9591 | || !OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION (c)) | |
9592 | map_cnt++; | |
9593 | continue; | |
9594 | } | |
9595 | ||
9596 | if (DECL_SIZE (var) | |
9597 | && TREE_CODE (DECL_SIZE (var)) != INTEGER_CST) | |
9598 | { | |
9599 | tree var2 = DECL_VALUE_EXPR (var); | |
9600 | gcc_assert (TREE_CODE (var2) == INDIRECT_REF); | |
9601 | var2 = TREE_OPERAND (var2, 0); | |
9602 | gcc_assert (DECL_P (var2)); | |
9603 | var = var2; | |
9604 | } | |
9605 | ||
9606 | if (!maybe_lookup_field (var, ctx)) | |
9607 | continue; | |
9608 | ||
9609 | if (kind == GF_OMP_TARGET_KIND_REGION) | |
9610 | { | |
9611 | x = build_receiver_ref (var, true, ctx); | |
9612 | tree new_var = lookup_decl (var, ctx); | |
9613 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP | |
9614 | && OMP_CLAUSE_MAP_KIND (c) == OMP_CLAUSE_MAP_POINTER | |
9615 | && !OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION (c) | |
9616 | && TREE_CODE (TREE_TYPE (var)) == ARRAY_TYPE) | |
9617 | x = build_simple_mem_ref (x); | |
9618 | SET_DECL_VALUE_EXPR (new_var, x); | |
9619 | DECL_HAS_VALUE_EXPR_P (new_var) = 1; | |
9620 | } | |
9621 | map_cnt++; | |
9622 | } | |
9623 | ||
9624 | if (kind == GF_OMP_TARGET_KIND_REGION) | |
9625 | { | |
9626 | target_nesting_level++; | |
9627 | lower_omp (&tgt_body, ctx); | |
9628 | target_nesting_level--; | |
9629 | } | |
9630 | else if (kind == GF_OMP_TARGET_KIND_DATA) | |
9631 | lower_omp (&tgt_body, ctx); | |
9632 | ||
9633 | if (kind == GF_OMP_TARGET_KIND_REGION) | |
9634 | { | |
9635 | /* Declare all the variables created by mapping and the variables | |
9636 | declared in the scope of the target body. */ | |
9637 | record_vars_into (ctx->block_vars, child_fn); | |
9638 | record_vars_into (gimple_bind_vars (tgt_bind), child_fn); | |
9639 | } | |
9640 | ||
9641 | olist = NULL; | |
9642 | ilist = NULL; | |
9643 | if (ctx->record_type) | |
9644 | { | |
9645 | ctx->sender_decl | |
9646 | = create_tmp_var (ctx->record_type, ".omp_data_arr"); | |
9647 | DECL_NAMELESS (ctx->sender_decl) = 1; | |
9648 | TREE_ADDRESSABLE (ctx->sender_decl) = 1; | |
9649 | t = make_tree_vec (3); | |
9650 | TREE_VEC_ELT (t, 0) = ctx->sender_decl; | |
9651 | TREE_VEC_ELT (t, 1) | |
9652 | = create_tmp_var (build_array_type_nelts (size_type_node, map_cnt), | |
9653 | ".omp_data_sizes"); | |
9654 | DECL_NAMELESS (TREE_VEC_ELT (t, 1)) = 1; | |
9655 | TREE_ADDRESSABLE (TREE_VEC_ELT (t, 1)) = 1; | |
9656 | TREE_STATIC (TREE_VEC_ELT (t, 1)) = 1; | |
9657 | TREE_VEC_ELT (t, 2) | |
9658 | = create_tmp_var (build_array_type_nelts (unsigned_char_type_node, | |
9659 | map_cnt), | |
9660 | ".omp_data_kinds"); | |
9661 | DECL_NAMELESS (TREE_VEC_ELT (t, 2)) = 1; | |
9662 | TREE_ADDRESSABLE (TREE_VEC_ELT (t, 2)) = 1; | |
9663 | TREE_STATIC (TREE_VEC_ELT (t, 2)) = 1; | |
9664 | gimple_omp_target_set_data_arg (stmt, t); | |
9665 | ||
9666 | vec<constructor_elt, va_gc> *vsize; | |
9667 | vec<constructor_elt, va_gc> *vkind; | |
9668 | vec_alloc (vsize, map_cnt); | |
9669 | vec_alloc (vkind, map_cnt); | |
9670 | unsigned int map_idx = 0; | |
9671 | ||
9672 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
9673 | switch (OMP_CLAUSE_CODE (c)) | |
9674 | { | |
9675 | tree ovar, nc; | |
9676 | ||
9677 | default: | |
9678 | break; | |
9679 | case OMP_CLAUSE_MAP: | |
9680 | case OMP_CLAUSE_TO: | |
9681 | case OMP_CLAUSE_FROM: | |
9682 | nc = c; | |
9683 | ovar = OMP_CLAUSE_DECL (c); | |
9684 | if (!DECL_P (ovar)) | |
9685 | { | |
9686 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP | |
9687 | && OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION (c)) | |
9688 | { | |
9689 | gcc_checking_assert (OMP_CLAUSE_DECL (OMP_CLAUSE_CHAIN (c)) | |
9690 | == get_base_address (ovar)); | |
9691 | nc = OMP_CLAUSE_CHAIN (c); | |
9692 | ovar = OMP_CLAUSE_DECL (nc); | |
9693 | } | |
9694 | else | |
9695 | { | |
9696 | tree x = build_sender_ref (ovar, ctx); | |
9697 | tree v | |
9698 | = build_fold_addr_expr_with_type (ovar, ptr_type_node); | |
9699 | gimplify_assign (x, v, &ilist); | |
9700 | nc = NULL_TREE; | |
9701 | } | |
9702 | } | |
9703 | else | |
9704 | { | |
9705 | if (DECL_SIZE (ovar) | |
9706 | && TREE_CODE (DECL_SIZE (ovar)) != INTEGER_CST) | |
9707 | { | |
9708 | tree ovar2 = DECL_VALUE_EXPR (ovar); | |
9709 | gcc_assert (TREE_CODE (ovar2) == INDIRECT_REF); | |
9710 | ovar2 = TREE_OPERAND (ovar2, 0); | |
9711 | gcc_assert (DECL_P (ovar2)); | |
9712 | ovar = ovar2; | |
9713 | } | |
9714 | if (!maybe_lookup_field (ovar, ctx)) | |
9715 | continue; | |
9716 | } | |
9717 | ||
9718 | if (nc) | |
9719 | { | |
9720 | tree var = lookup_decl_in_outer_ctx (ovar, ctx); | |
9721 | tree x = build_sender_ref (ovar, ctx); | |
9722 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP | |
9723 | && OMP_CLAUSE_MAP_KIND (c) == OMP_CLAUSE_MAP_POINTER | |
9724 | && !OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION (c) | |
9725 | && TREE_CODE (TREE_TYPE (ovar)) == ARRAY_TYPE) | |
9726 | { | |
9727 | gcc_assert (kind == GF_OMP_TARGET_KIND_REGION); | |
9728 | tree avar | |
9729 | = create_tmp_var (TREE_TYPE (TREE_TYPE (x)), NULL); | |
9730 | mark_addressable (avar); | |
9731 | gimplify_assign (avar, build_fold_addr_expr (var), &ilist); | |
9732 | avar = build_fold_addr_expr (avar); | |
9733 | gimplify_assign (x, avar, &ilist); | |
9734 | } | |
9735 | else if (is_gimple_reg (var)) | |
9736 | { | |
9737 | gcc_assert (kind == GF_OMP_TARGET_KIND_REGION); | |
9738 | tree avar = create_tmp_var (TREE_TYPE (var), NULL); | |
9739 | mark_addressable (avar); | |
9740 | if (OMP_CLAUSE_MAP_KIND (c) != OMP_CLAUSE_MAP_ALLOC | |
9741 | && OMP_CLAUSE_MAP_KIND (c) != OMP_CLAUSE_MAP_FROM) | |
9742 | gimplify_assign (avar, var, &ilist); | |
9743 | avar = build_fold_addr_expr (avar); | |
9744 | gimplify_assign (x, avar, &ilist); | |
9745 | if ((OMP_CLAUSE_MAP_KIND (c) == OMP_CLAUSE_MAP_FROM | |
9746 | || OMP_CLAUSE_MAP_KIND (c) == OMP_CLAUSE_MAP_TOFROM) | |
9747 | && !TYPE_READONLY (TREE_TYPE (var))) | |
9748 | { | |
9749 | x = build_sender_ref (ovar, ctx); | |
9750 | x = build_simple_mem_ref (x); | |
9751 | gimplify_assign (var, x, &olist); | |
9752 | } | |
9753 | } | |
9754 | else | |
9755 | { | |
9756 | var = build_fold_addr_expr (var); | |
9757 | gimplify_assign (x, var, &ilist); | |
9758 | } | |
9759 | } | |
9760 | tree s = OMP_CLAUSE_SIZE (c); | |
9761 | if (s == NULL_TREE) | |
9762 | s = TYPE_SIZE_UNIT (TREE_TYPE (ovar)); | |
9763 | s = fold_convert (size_type_node, s); | |
9764 | tree purpose = size_int (map_idx++); | |
9765 | CONSTRUCTOR_APPEND_ELT (vsize, purpose, s); | |
9766 | if (TREE_CODE (s) != INTEGER_CST) | |
9767 | TREE_STATIC (TREE_VEC_ELT (t, 1)) = 0; | |
9768 | ||
9769 | unsigned char tkind = 0; | |
9770 | switch (OMP_CLAUSE_CODE (c)) | |
9771 | { | |
9772 | case OMP_CLAUSE_MAP: | |
9773 | tkind = OMP_CLAUSE_MAP_KIND (c); | |
9774 | break; | |
9775 | case OMP_CLAUSE_TO: | |
9776 | tkind = OMP_CLAUSE_MAP_TO; | |
9777 | break; | |
9778 | case OMP_CLAUSE_FROM: | |
9779 | tkind = OMP_CLAUSE_MAP_FROM; | |
9780 | break; | |
9781 | default: | |
9782 | gcc_unreachable (); | |
9783 | } | |
9784 | unsigned int talign = TYPE_ALIGN_UNIT (TREE_TYPE (ovar)); | |
9785 | if (DECL_P (ovar) && DECL_ALIGN_UNIT (ovar) > talign) | |
9786 | talign = DECL_ALIGN_UNIT (ovar); | |
9787 | talign = ceil_log2 (talign); | |
9788 | tkind |= talign << 3; | |
9789 | CONSTRUCTOR_APPEND_ELT (vkind, purpose, | |
9790 | build_int_cst (unsigned_char_type_node, | |
9791 | tkind)); | |
9792 | if (nc && nc != c) | |
9793 | c = nc; | |
9794 | } | |
9795 | ||
9796 | gcc_assert (map_idx == map_cnt); | |
9797 | ||
9798 | DECL_INITIAL (TREE_VEC_ELT (t, 1)) | |
9799 | = build_constructor (TREE_TYPE (TREE_VEC_ELT (t, 1)), vsize); | |
9800 | DECL_INITIAL (TREE_VEC_ELT (t, 2)) | |
9801 | = build_constructor (TREE_TYPE (TREE_VEC_ELT (t, 2)), vkind); | |
9802 | if (!TREE_STATIC (TREE_VEC_ELT (t, 1))) | |
9803 | { | |
9804 | gimple_seq initlist = NULL; | |
9805 | force_gimple_operand (build1 (DECL_EXPR, void_type_node, | |
9806 | TREE_VEC_ELT (t, 1)), | |
9807 | &initlist, true, NULL_TREE); | |
9808 | gimple_seq_add_seq (&ilist, initlist); | |
9809 | } | |
9810 | ||
9811 | tree clobber = build_constructor (ctx->record_type, NULL); | |
9812 | TREE_THIS_VOLATILE (clobber) = 1; | |
9813 | gimple_seq_add_stmt (&olist, gimple_build_assign (ctx->sender_decl, | |
9814 | clobber)); | |
9815 | } | |
9816 | ||
9817 | /* Once all the expansions are done, sequence all the different | |
9818 | fragments inside gimple_omp_body. */ | |
9819 | ||
9820 | new_body = NULL; | |
9821 | ||
9822 | if (ctx->record_type && kind == GF_OMP_TARGET_KIND_REGION) | |
9823 | { | |
9824 | t = build_fold_addr_expr_loc (loc, ctx->sender_decl); | |
9825 | /* fixup_child_record_type might have changed receiver_decl's type. */ | |
9826 | t = fold_convert_loc (loc, TREE_TYPE (ctx->receiver_decl), t); | |
9827 | gimple_seq_add_stmt (&new_body, | |
9828 | gimple_build_assign (ctx->receiver_decl, t)); | |
9829 | } | |
9830 | ||
9831 | if (kind == GF_OMP_TARGET_KIND_REGION) | |
9832 | { | |
9833 | gimple_seq_add_seq (&new_body, tgt_body); | |
9834 | new_body = maybe_catch_exception (new_body); | |
9835 | } | |
9836 | else if (kind == GF_OMP_TARGET_KIND_DATA) | |
9837 | new_body = tgt_body; | |
9838 | if (kind != GF_OMP_TARGET_KIND_UPDATE) | |
9839 | { | |
9840 | gimple_seq_add_stmt (&new_body, gimple_build_omp_return (false)); | |
9841 | gimple_omp_set_body (stmt, new_body); | |
9842 | } | |
9843 | ||
9844 | bind = gimple_build_bind (NULL, NULL, | |
9845 | tgt_bind ? gimple_bind_block (tgt_bind) | |
9846 | : NULL_TREE); | |
75a70cf9 | 9847 | gsi_replace (gsi_p, bind, true); |
e3a19533 | 9848 | gimple_bind_add_seq (bind, ilist); |
9849 | gimple_bind_add_stmt (bind, stmt); | |
9850 | gimple_bind_add_seq (bind, olist); | |
773c5ba7 | 9851 | |
75a70cf9 | 9852 | pop_gimplify_context (NULL); |
773c5ba7 | 9853 | } |
9854 | ||
bc7bff74 | 9855 | /* Expand code for an OpenMP teams directive. */ |
9856 | ||
9857 | static void | |
9858 | lower_omp_teams (gimple_stmt_iterator *gsi_p, omp_context *ctx) | |
9859 | { | |
9860 | gimple teams_stmt = gsi_stmt (*gsi_p); | |
8a4a28a8 | 9861 | push_gimplify_context (); |
bc7bff74 | 9862 | |
9863 | tree block = make_node (BLOCK); | |
9864 | gimple bind = gimple_build_bind (NULL, NULL, block); | |
9865 | gsi_replace (gsi_p, bind, true); | |
9866 | gimple_seq bind_body = NULL; | |
9867 | gimple_seq dlist = NULL; | |
9868 | gimple_seq olist = NULL; | |
9869 | ||
9870 | tree num_teams = find_omp_clause (gimple_omp_teams_clauses (teams_stmt), | |
9871 | OMP_CLAUSE_NUM_TEAMS); | |
9872 | if (num_teams == NULL_TREE) | |
9873 | num_teams = build_int_cst (unsigned_type_node, 0); | |
9874 | else | |
9875 | { | |
9876 | num_teams = OMP_CLAUSE_NUM_TEAMS_EXPR (num_teams); | |
9877 | num_teams = fold_convert (unsigned_type_node, num_teams); | |
9878 | gimplify_expr (&num_teams, &bind_body, NULL, is_gimple_val, fb_rvalue); | |
9879 | } | |
9880 | tree thread_limit = find_omp_clause (gimple_omp_teams_clauses (teams_stmt), | |
9881 | OMP_CLAUSE_THREAD_LIMIT); | |
9882 | if (thread_limit == NULL_TREE) | |
9883 | thread_limit = build_int_cst (unsigned_type_node, 0); | |
9884 | else | |
9885 | { | |
9886 | thread_limit = OMP_CLAUSE_THREAD_LIMIT_EXPR (thread_limit); | |
9887 | thread_limit = fold_convert (unsigned_type_node, thread_limit); | |
9888 | gimplify_expr (&thread_limit, &bind_body, NULL, is_gimple_val, | |
9889 | fb_rvalue); | |
9890 | } | |
9891 | ||
9892 | lower_rec_input_clauses (gimple_omp_teams_clauses (teams_stmt), | |
9893 | &bind_body, &dlist, ctx, NULL); | |
9894 | lower_omp (gimple_omp_body_ptr (teams_stmt), ctx); | |
9895 | lower_reduction_clauses (gimple_omp_teams_clauses (teams_stmt), &olist, ctx); | |
9896 | gimple_seq_add_stmt (&bind_body, teams_stmt); | |
9897 | ||
9898 | location_t loc = gimple_location (teams_stmt); | |
9899 | tree decl = builtin_decl_explicit (BUILT_IN_GOMP_TEAMS); | |
9900 | gimple call = gimple_build_call (decl, 2, num_teams, thread_limit); | |
9901 | gimple_set_location (call, loc); | |
9902 | gimple_seq_add_stmt (&bind_body, call); | |
9903 | ||
9904 | gimple_seq_add_seq (&bind_body, gimple_omp_body (teams_stmt)); | |
9905 | gimple_omp_set_body (teams_stmt, NULL); | |
9906 | gimple_seq_add_seq (&bind_body, olist); | |
9907 | gimple_seq_add_seq (&bind_body, dlist); | |
9908 | gimple_seq_add_stmt (&bind_body, gimple_build_omp_return (true)); | |
9909 | gimple_bind_set_body (bind, bind_body); | |
9910 | ||
9911 | pop_gimplify_context (bind); | |
9912 | ||
9913 | gimple_bind_append_vars (bind, ctx->block_vars); | |
9914 | BLOCK_VARS (block) = ctx->block_vars; | |
9915 | if (BLOCK_VARS (block)) | |
9916 | TREE_USED (block) = 1; | |
9917 | } | |
9918 | ||
9919 | ||
a4890dc9 | 9920 | /* Callback for lower_omp_1. Return non-NULL if *tp needs to be |
75a70cf9 | 9921 | regimplified. If DATA is non-NULL, lower_omp_1 is outside |
9922 | of OpenMP context, but with task_shared_vars set. */ | |
46515c92 | 9923 | |
9924 | static tree | |
75a70cf9 | 9925 | lower_omp_regimplify_p (tree *tp, int *walk_subtrees, |
9926 | void *data) | |
46515c92 | 9927 | { |
a4890dc9 | 9928 | tree t = *tp; |
46515c92 | 9929 | |
a4890dc9 | 9930 | /* Any variable with DECL_VALUE_EXPR needs to be regimplified. */ |
75a70cf9 | 9931 | if (TREE_CODE (t) == VAR_DECL && data == NULL && DECL_HAS_VALUE_EXPR_P (t)) |
9f49e155 | 9932 | return t; |
9933 | ||
9934 | if (task_shared_vars | |
9935 | && DECL_P (t) | |
9936 | && bitmap_bit_p (task_shared_vars, DECL_UID (t))) | |
a4890dc9 | 9937 | return t; |
46515c92 | 9938 | |
a4890dc9 | 9939 | /* If a global variable has been privatized, TREE_CONSTANT on |
9940 | ADDR_EXPR might be wrong. */ | |
75a70cf9 | 9941 | if (data == NULL && TREE_CODE (t) == ADDR_EXPR) |
a4890dc9 | 9942 | recompute_tree_invariant_for_addr_expr (t); |
46515c92 | 9943 | |
a4890dc9 | 9944 | *walk_subtrees = !TYPE_P (t) && !DECL_P (t); |
9945 | return NULL_TREE; | |
46515c92 | 9946 | } |
773c5ba7 | 9947 | |
a4890dc9 | 9948 | static void |
75a70cf9 | 9949 | lower_omp_1 (gimple_stmt_iterator *gsi_p, omp_context *ctx) |
1e8e9920 | 9950 | { |
75a70cf9 | 9951 | gimple stmt = gsi_stmt (*gsi_p); |
9952 | struct walk_stmt_info wi; | |
1e8e9920 | 9953 | |
75a70cf9 | 9954 | if (gimple_has_location (stmt)) |
9955 | input_location = gimple_location (stmt); | |
a4890dc9 | 9956 | |
75a70cf9 | 9957 | if (task_shared_vars) |
9958 | memset (&wi, '\0', sizeof (wi)); | |
a4890dc9 | 9959 | |
773c5ba7 | 9960 | /* If we have issued syntax errors, avoid doing any heavy lifting. |
9961 | Just replace the OpenMP directives with a NOP to avoid | |
9962 | confusing RTL expansion. */ | |
852f689e | 9963 | if (seen_error () && is_gimple_omp (stmt)) |
773c5ba7 | 9964 | { |
75a70cf9 | 9965 | gsi_replace (gsi_p, gimple_build_nop (), true); |
a4890dc9 | 9966 | return; |
773c5ba7 | 9967 | } |
9968 | ||
75a70cf9 | 9969 | switch (gimple_code (stmt)) |
1e8e9920 | 9970 | { |
75a70cf9 | 9971 | case GIMPLE_COND: |
fd6481cf | 9972 | if ((ctx || task_shared_vars) |
75a70cf9 | 9973 | && (walk_tree (gimple_cond_lhs_ptr (stmt), lower_omp_regimplify_p, |
9974 | ctx ? NULL : &wi, NULL) | |
9975 | || walk_tree (gimple_cond_rhs_ptr (stmt), lower_omp_regimplify_p, | |
9976 | ctx ? NULL : &wi, NULL))) | |
9977 | gimple_regimplify_operands (stmt, gsi_p); | |
a4890dc9 | 9978 | break; |
75a70cf9 | 9979 | case GIMPLE_CATCH: |
e3a19533 | 9980 | lower_omp (gimple_catch_handler_ptr (stmt), ctx); |
a4890dc9 | 9981 | break; |
75a70cf9 | 9982 | case GIMPLE_EH_FILTER: |
e3a19533 | 9983 | lower_omp (gimple_eh_filter_failure_ptr (stmt), ctx); |
a4890dc9 | 9984 | break; |
75a70cf9 | 9985 | case GIMPLE_TRY: |
e3a19533 | 9986 | lower_omp (gimple_try_eval_ptr (stmt), ctx); |
9987 | lower_omp (gimple_try_cleanup_ptr (stmt), ctx); | |
a4890dc9 | 9988 | break; |
35215227 | 9989 | case GIMPLE_TRANSACTION: |
9990 | lower_omp (gimple_transaction_body_ptr (stmt), ctx); | |
9991 | break; | |
75a70cf9 | 9992 | case GIMPLE_BIND: |
e3a19533 | 9993 | lower_omp (gimple_bind_body_ptr (stmt), ctx); |
a4890dc9 | 9994 | break; |
75a70cf9 | 9995 | case GIMPLE_OMP_PARALLEL: |
9996 | case GIMPLE_OMP_TASK: | |
9997 | ctx = maybe_lookup_ctx (stmt); | |
bc7bff74 | 9998 | gcc_assert (ctx); |
9999 | if (ctx->cancellable) | |
10000 | ctx->cancel_label = create_artificial_label (UNKNOWN_LOCATION); | |
75a70cf9 | 10001 | lower_omp_taskreg (gsi_p, ctx); |
a4890dc9 | 10002 | break; |
75a70cf9 | 10003 | case GIMPLE_OMP_FOR: |
10004 | ctx = maybe_lookup_ctx (stmt); | |
1e8e9920 | 10005 | gcc_assert (ctx); |
bc7bff74 | 10006 | if (ctx->cancellable) |
10007 | ctx->cancel_label = create_artificial_label (UNKNOWN_LOCATION); | |
75a70cf9 | 10008 | lower_omp_for (gsi_p, ctx); |
1e8e9920 | 10009 | break; |
75a70cf9 | 10010 | case GIMPLE_OMP_SECTIONS: |
10011 | ctx = maybe_lookup_ctx (stmt); | |
1e8e9920 | 10012 | gcc_assert (ctx); |
bc7bff74 | 10013 | if (ctx->cancellable) |
10014 | ctx->cancel_label = create_artificial_label (UNKNOWN_LOCATION); | |
75a70cf9 | 10015 | lower_omp_sections (gsi_p, ctx); |
1e8e9920 | 10016 | break; |
75a70cf9 | 10017 | case GIMPLE_OMP_SINGLE: |
10018 | ctx = maybe_lookup_ctx (stmt); | |
1e8e9920 | 10019 | gcc_assert (ctx); |
75a70cf9 | 10020 | lower_omp_single (gsi_p, ctx); |
1e8e9920 | 10021 | break; |
75a70cf9 | 10022 | case GIMPLE_OMP_MASTER: |
10023 | ctx = maybe_lookup_ctx (stmt); | |
1e8e9920 | 10024 | gcc_assert (ctx); |
75a70cf9 | 10025 | lower_omp_master (gsi_p, ctx); |
1e8e9920 | 10026 | break; |
bc7bff74 | 10027 | case GIMPLE_OMP_TASKGROUP: |
10028 | ctx = maybe_lookup_ctx (stmt); | |
10029 | gcc_assert (ctx); | |
10030 | lower_omp_taskgroup (gsi_p, ctx); | |
10031 | break; | |
75a70cf9 | 10032 | case GIMPLE_OMP_ORDERED: |
10033 | ctx = maybe_lookup_ctx (stmt); | |
1e8e9920 | 10034 | gcc_assert (ctx); |
75a70cf9 | 10035 | lower_omp_ordered (gsi_p, ctx); |
1e8e9920 | 10036 | break; |
75a70cf9 | 10037 | case GIMPLE_OMP_CRITICAL: |
10038 | ctx = maybe_lookup_ctx (stmt); | |
1e8e9920 | 10039 | gcc_assert (ctx); |
75a70cf9 | 10040 | lower_omp_critical (gsi_p, ctx); |
10041 | break; | |
10042 | case GIMPLE_OMP_ATOMIC_LOAD: | |
10043 | if ((ctx || task_shared_vars) | |
10044 | && walk_tree (gimple_omp_atomic_load_rhs_ptr (stmt), | |
10045 | lower_omp_regimplify_p, ctx ? NULL : &wi, NULL)) | |
10046 | gimple_regimplify_operands (stmt, gsi_p); | |
1e8e9920 | 10047 | break; |
bc7bff74 | 10048 | case GIMPLE_OMP_TARGET: |
10049 | ctx = maybe_lookup_ctx (stmt); | |
10050 | gcc_assert (ctx); | |
10051 | lower_omp_target (gsi_p, ctx); | |
10052 | break; | |
10053 | case GIMPLE_OMP_TEAMS: | |
10054 | ctx = maybe_lookup_ctx (stmt); | |
10055 | gcc_assert (ctx); | |
10056 | lower_omp_teams (gsi_p, ctx); | |
10057 | break; | |
10058 | case GIMPLE_CALL: | |
10059 | tree fndecl; | |
10060 | fndecl = gimple_call_fndecl (stmt); | |
10061 | if (fndecl | |
10062 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL) | |
10063 | switch (DECL_FUNCTION_CODE (fndecl)) | |
10064 | { | |
10065 | case BUILT_IN_GOMP_BARRIER: | |
10066 | if (ctx == NULL) | |
10067 | break; | |
10068 | /* FALLTHRU */ | |
10069 | case BUILT_IN_GOMP_CANCEL: | |
10070 | case BUILT_IN_GOMP_CANCELLATION_POINT: | |
10071 | omp_context *cctx; | |
10072 | cctx = ctx; | |
10073 | if (gimple_code (cctx->stmt) == GIMPLE_OMP_SECTION) | |
10074 | cctx = cctx->outer; | |
10075 | gcc_assert (gimple_call_lhs (stmt) == NULL_TREE); | |
10076 | if (!cctx->cancellable) | |
10077 | { | |
10078 | if (DECL_FUNCTION_CODE (fndecl) | |
10079 | == BUILT_IN_GOMP_CANCELLATION_POINT) | |
10080 | { | |
10081 | stmt = gimple_build_nop (); | |
10082 | gsi_replace (gsi_p, stmt, false); | |
10083 | } | |
10084 | break; | |
10085 | } | |
10086 | tree lhs; | |
10087 | lhs = create_tmp_var (boolean_type_node, NULL); | |
10088 | if (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_GOMP_BARRIER) | |
10089 | { | |
10090 | fndecl = builtin_decl_explicit (BUILT_IN_GOMP_BARRIER_CANCEL); | |
10091 | gimple_call_set_fndecl (stmt, fndecl); | |
10092 | gimple_call_set_fntype (stmt, TREE_TYPE (fndecl)); | |
10093 | } | |
10094 | gimple_call_set_lhs (stmt, lhs); | |
10095 | tree fallthru_label; | |
10096 | fallthru_label = create_artificial_label (UNKNOWN_LOCATION); | |
10097 | gimple g; | |
10098 | g = gimple_build_label (fallthru_label); | |
10099 | gsi_insert_after (gsi_p, g, GSI_SAME_STMT); | |
10100 | g = gimple_build_cond (NE_EXPR, lhs, boolean_false_node, | |
10101 | cctx->cancel_label, fallthru_label); | |
10102 | gsi_insert_after (gsi_p, g, GSI_SAME_STMT); | |
10103 | break; | |
10104 | default: | |
10105 | break; | |
10106 | } | |
10107 | /* FALLTHRU */ | |
a4890dc9 | 10108 | default: |
fd6481cf | 10109 | if ((ctx || task_shared_vars) |
75a70cf9 | 10110 | && walk_gimple_op (stmt, lower_omp_regimplify_p, |
10111 | ctx ? NULL : &wi)) | |
10112 | gimple_regimplify_operands (stmt, gsi_p); | |
1e8e9920 | 10113 | break; |
1e8e9920 | 10114 | } |
1e8e9920 | 10115 | } |
10116 | ||
10117 | static void | |
e3a19533 | 10118 | lower_omp (gimple_seq *body, omp_context *ctx) |
1e8e9920 | 10119 | { |
1d22f541 | 10120 | location_t saved_location = input_location; |
e3a19533 | 10121 | gimple_stmt_iterator gsi; |
10122 | for (gsi = gsi_start (*body); !gsi_end_p (gsi); gsi_next (&gsi)) | |
75a70cf9 | 10123 | lower_omp_1 (&gsi, ctx); |
bc7bff74 | 10124 | /* Inside target region we haven't called fold_stmt during gimplification, |
10125 | because it can break code by adding decl references that weren't in the | |
10126 | source. Call fold_stmt now. */ | |
10127 | if (target_nesting_level) | |
10128 | for (gsi = gsi_start (*body); !gsi_end_p (gsi); gsi_next (&gsi)) | |
10129 | fold_stmt (&gsi); | |
1d22f541 | 10130 | input_location = saved_location; |
1e8e9920 | 10131 | } |
10132 | \f | |
10133 | /* Main entry point. */ | |
10134 | ||
2a1990e9 | 10135 | static unsigned int |
1e8e9920 | 10136 | execute_lower_omp (void) |
10137 | { | |
75a70cf9 | 10138 | gimple_seq body; |
10139 | ||
41709826 | 10140 | /* This pass always runs, to provide PROP_gimple_lomp. |
10141 | But there is nothing to do unless -fopenmp is given. */ | |
a89e6c15 | 10142 | if (flag_openmp == 0 && flag_openmp_simd == 0 && flag_cilkplus == 0) |
41709826 | 10143 | return 0; |
10144 | ||
1e8e9920 | 10145 | all_contexts = splay_tree_new (splay_tree_compare_pointers, 0, |
10146 | delete_omp_context); | |
10147 | ||
75a70cf9 | 10148 | body = gimple_body (current_function_decl); |
ab129075 | 10149 | scan_omp (&body, NULL); |
fd6481cf | 10150 | gcc_assert (taskreg_nesting_level == 0); |
1e8e9920 | 10151 | |
10152 | if (all_contexts->root) | |
fd6481cf | 10153 | { |
10154 | if (task_shared_vars) | |
8a4a28a8 | 10155 | push_gimplify_context (); |
e3a19533 | 10156 | lower_omp (&body, NULL); |
fd6481cf | 10157 | if (task_shared_vars) |
10158 | pop_gimplify_context (NULL); | |
10159 | } | |
1e8e9920 | 10160 | |
773c5ba7 | 10161 | if (all_contexts) |
10162 | { | |
10163 | splay_tree_delete (all_contexts); | |
10164 | all_contexts = NULL; | |
10165 | } | |
fd6481cf | 10166 | BITMAP_FREE (task_shared_vars); |
2a1990e9 | 10167 | return 0; |
1e8e9920 | 10168 | } |
10169 | ||
cbe8bda8 | 10170 | namespace { |
10171 | ||
10172 | const pass_data pass_data_lower_omp = | |
10173 | { | |
10174 | GIMPLE_PASS, /* type */ | |
10175 | "omplower", /* name */ | |
10176 | OPTGROUP_NONE, /* optinfo_flags */ | |
10177 | false, /* has_gate */ | |
10178 | true, /* has_execute */ | |
10179 | TV_NONE, /* tv_id */ | |
10180 | PROP_gimple_any, /* properties_required */ | |
10181 | PROP_gimple_lomp, /* properties_provided */ | |
10182 | 0, /* properties_destroyed */ | |
10183 | 0, /* todo_flags_start */ | |
10184 | 0, /* todo_flags_finish */ | |
1e8e9920 | 10185 | }; |
cbe8bda8 | 10186 | |
10187 | class pass_lower_omp : public gimple_opt_pass | |
10188 | { | |
10189 | public: | |
9af5ce0c | 10190 | pass_lower_omp (gcc::context *ctxt) |
10191 | : gimple_opt_pass (pass_data_lower_omp, ctxt) | |
cbe8bda8 | 10192 | {} |
10193 | ||
10194 | /* opt_pass methods: */ | |
10195 | unsigned int execute () { return execute_lower_omp (); } | |
10196 | ||
10197 | }; // class pass_lower_omp | |
10198 | ||
10199 | } // anon namespace | |
10200 | ||
10201 | gimple_opt_pass * | |
10202 | make_pass_lower_omp (gcc::context *ctxt) | |
10203 | { | |
10204 | return new pass_lower_omp (ctxt); | |
10205 | } | |
1e8e9920 | 10206 | \f |
10207 | /* The following is a utility to diagnose OpenMP structured block violations. | |
61e47ac8 | 10208 | It is not part of the "omplower" pass, as that's invoked too late. It |
10209 | should be invoked by the respective front ends after gimplification. */ | |
1e8e9920 | 10210 | |
10211 | static splay_tree all_labels; | |
10212 | ||
10213 | /* Check for mismatched contexts and generate an error if needed. Return | |
10214 | true if an error is detected. */ | |
10215 | ||
10216 | static bool | |
75a70cf9 | 10217 | diagnose_sb_0 (gimple_stmt_iterator *gsi_p, |
10218 | gimple branch_ctx, gimple label_ctx) | |
1e8e9920 | 10219 | { |
75a70cf9 | 10220 | if (label_ctx == branch_ctx) |
1e8e9920 | 10221 | return false; |
10222 | ||
48e1416a | 10223 | |
75a70cf9 | 10224 | /* |
10225 | Previously we kept track of the label's entire context in diagnose_sb_[12] | |
10226 | so we could traverse it and issue a correct "exit" or "enter" error | |
10227 | message upon a structured block violation. | |
10228 | ||
10229 | We built the context by building a list with tree_cons'ing, but there is | |
10230 | no easy counterpart in gimple tuples. It seems like far too much work | |
10231 | for issuing exit/enter error messages. If someone really misses the | |
10232 | distinct error message... patches welcome. | |
10233 | */ | |
48e1416a | 10234 | |
75a70cf9 | 10235 | #if 0 |
1e8e9920 | 10236 | /* Try to avoid confusing the user by producing and error message |
f0b5f617 | 10237 | with correct "exit" or "enter" verbiage. We prefer "exit" |
1e8e9920 | 10238 | unless we can show that LABEL_CTX is nested within BRANCH_CTX. */ |
10239 | if (branch_ctx == NULL) | |
10240 | exit_p = false; | |
10241 | else | |
10242 | { | |
10243 | while (label_ctx) | |
10244 | { | |
10245 | if (TREE_VALUE (label_ctx) == branch_ctx) | |
10246 | { | |
10247 | exit_p = false; | |
10248 | break; | |
10249 | } | |
10250 | label_ctx = TREE_CHAIN (label_ctx); | |
10251 | } | |
10252 | } | |
10253 | ||
10254 | if (exit_p) | |
10255 | error ("invalid exit from OpenMP structured block"); | |
10256 | else | |
10257 | error ("invalid entry to OpenMP structured block"); | |
75a70cf9 | 10258 | #endif |
1e8e9920 | 10259 | |
f2697631 | 10260 | bool cilkplus_block = false; |
a89e6c15 | 10261 | if (flag_cilkplus) |
f2697631 | 10262 | { |
10263 | if ((branch_ctx | |
10264 | && gimple_code (branch_ctx) == GIMPLE_OMP_FOR | |
10265 | && gimple_omp_for_kind (branch_ctx) == GF_OMP_FOR_KIND_CILKSIMD) | |
10266 | || (gimple_code (label_ctx) == GIMPLE_OMP_FOR | |
10267 | && gimple_omp_for_kind (label_ctx) == GF_OMP_FOR_KIND_CILKSIMD)) | |
10268 | cilkplus_block = true; | |
10269 | } | |
10270 | ||
75a70cf9 | 10271 | /* If it's obvious we have an invalid entry, be specific about the error. */ |
10272 | if (branch_ctx == NULL) | |
f2697631 | 10273 | { |
10274 | if (cilkplus_block) | |
10275 | error ("invalid entry to Cilk Plus structured block"); | |
10276 | else | |
10277 | error ("invalid entry to OpenMP structured block"); | |
10278 | } | |
75a70cf9 | 10279 | else |
f2697631 | 10280 | { |
10281 | /* Otherwise, be vague and lazy, but efficient. */ | |
10282 | if (cilkplus_block) | |
10283 | error ("invalid branch to/from a Cilk Plus structured block"); | |
10284 | else | |
10285 | error ("invalid branch to/from an OpenMP structured block"); | |
10286 | } | |
75a70cf9 | 10287 | |
10288 | gsi_replace (gsi_p, gimple_build_nop (), false); | |
1e8e9920 | 10289 | return true; |
10290 | } | |
10291 | ||
10292 | /* Pass 1: Create a minimal tree of OpenMP structured blocks, and record | |
75a70cf9 | 10293 | where each label is found. */ |
1e8e9920 | 10294 | |
10295 | static tree | |
75a70cf9 | 10296 | diagnose_sb_1 (gimple_stmt_iterator *gsi_p, bool *handled_ops_p, |
10297 | struct walk_stmt_info *wi) | |
1e8e9920 | 10298 | { |
75a70cf9 | 10299 | gimple context = (gimple) wi->info; |
10300 | gimple inner_context; | |
10301 | gimple stmt = gsi_stmt (*gsi_p); | |
1e8e9920 | 10302 | |
75a70cf9 | 10303 | *handled_ops_p = true; |
10304 | ||
10305 | switch (gimple_code (stmt)) | |
1e8e9920 | 10306 | { |
75a70cf9 | 10307 | WALK_SUBSTMTS; |
48e1416a | 10308 | |
75a70cf9 | 10309 | case GIMPLE_OMP_PARALLEL: |
10310 | case GIMPLE_OMP_TASK: | |
10311 | case GIMPLE_OMP_SECTIONS: | |
10312 | case GIMPLE_OMP_SINGLE: | |
10313 | case GIMPLE_OMP_SECTION: | |
10314 | case GIMPLE_OMP_MASTER: | |
10315 | case GIMPLE_OMP_ORDERED: | |
10316 | case GIMPLE_OMP_CRITICAL: | |
bc7bff74 | 10317 | case GIMPLE_OMP_TARGET: |
10318 | case GIMPLE_OMP_TEAMS: | |
10319 | case GIMPLE_OMP_TASKGROUP: | |
75a70cf9 | 10320 | /* The minimal context here is just the current OMP construct. */ |
10321 | inner_context = stmt; | |
1e8e9920 | 10322 | wi->info = inner_context; |
75a70cf9 | 10323 | walk_gimple_seq (gimple_omp_body (stmt), diagnose_sb_1, NULL, wi); |
1e8e9920 | 10324 | wi->info = context; |
10325 | break; | |
10326 | ||
75a70cf9 | 10327 | case GIMPLE_OMP_FOR: |
10328 | inner_context = stmt; | |
1e8e9920 | 10329 | wi->info = inner_context; |
75a70cf9 | 10330 | /* gimple_omp_for_{index,initial,final} are all DECLs; no need to |
10331 | walk them. */ | |
10332 | walk_gimple_seq (gimple_omp_for_pre_body (stmt), | |
10333 | diagnose_sb_1, NULL, wi); | |
10334 | walk_gimple_seq (gimple_omp_body (stmt), diagnose_sb_1, NULL, wi); | |
1e8e9920 | 10335 | wi->info = context; |
10336 | break; | |
10337 | ||
75a70cf9 | 10338 | case GIMPLE_LABEL: |
10339 | splay_tree_insert (all_labels, (splay_tree_key) gimple_label_label (stmt), | |
1e8e9920 | 10340 | (splay_tree_value) context); |
10341 | break; | |
10342 | ||
10343 | default: | |
10344 | break; | |
10345 | } | |
10346 | ||
10347 | return NULL_TREE; | |
10348 | } | |
10349 | ||
10350 | /* Pass 2: Check each branch and see if its context differs from that of | |
10351 | the destination label's context. */ | |
10352 | ||
10353 | static tree | |
75a70cf9 | 10354 | diagnose_sb_2 (gimple_stmt_iterator *gsi_p, bool *handled_ops_p, |
10355 | struct walk_stmt_info *wi) | |
1e8e9920 | 10356 | { |
75a70cf9 | 10357 | gimple context = (gimple) wi->info; |
1e8e9920 | 10358 | splay_tree_node n; |
75a70cf9 | 10359 | gimple stmt = gsi_stmt (*gsi_p); |
1e8e9920 | 10360 | |
75a70cf9 | 10361 | *handled_ops_p = true; |
10362 | ||
10363 | switch (gimple_code (stmt)) | |
1e8e9920 | 10364 | { |
75a70cf9 | 10365 | WALK_SUBSTMTS; |
10366 | ||
10367 | case GIMPLE_OMP_PARALLEL: | |
10368 | case GIMPLE_OMP_TASK: | |
10369 | case GIMPLE_OMP_SECTIONS: | |
10370 | case GIMPLE_OMP_SINGLE: | |
10371 | case GIMPLE_OMP_SECTION: | |
10372 | case GIMPLE_OMP_MASTER: | |
10373 | case GIMPLE_OMP_ORDERED: | |
10374 | case GIMPLE_OMP_CRITICAL: | |
bc7bff74 | 10375 | case GIMPLE_OMP_TARGET: |
10376 | case GIMPLE_OMP_TEAMS: | |
10377 | case GIMPLE_OMP_TASKGROUP: | |
75a70cf9 | 10378 | wi->info = stmt; |
e3a19533 | 10379 | walk_gimple_seq_mod (gimple_omp_body_ptr (stmt), diagnose_sb_2, NULL, wi); |
1e8e9920 | 10380 | wi->info = context; |
10381 | break; | |
10382 | ||
75a70cf9 | 10383 | case GIMPLE_OMP_FOR: |
10384 | wi->info = stmt; | |
10385 | /* gimple_omp_for_{index,initial,final} are all DECLs; no need to | |
10386 | walk them. */ | |
e3a19533 | 10387 | walk_gimple_seq_mod (gimple_omp_for_pre_body_ptr (stmt), |
10388 | diagnose_sb_2, NULL, wi); | |
10389 | walk_gimple_seq_mod (gimple_omp_body_ptr (stmt), diagnose_sb_2, NULL, wi); | |
1e8e9920 | 10390 | wi->info = context; |
10391 | break; | |
10392 | ||
0e1818e7 | 10393 | case GIMPLE_COND: |
10394 | { | |
10395 | tree lab = gimple_cond_true_label (stmt); | |
10396 | if (lab) | |
10397 | { | |
10398 | n = splay_tree_lookup (all_labels, | |
10399 | (splay_tree_key) lab); | |
10400 | diagnose_sb_0 (gsi_p, context, | |
10401 | n ? (gimple) n->value : NULL); | |
10402 | } | |
10403 | lab = gimple_cond_false_label (stmt); | |
10404 | if (lab) | |
10405 | { | |
10406 | n = splay_tree_lookup (all_labels, | |
10407 | (splay_tree_key) lab); | |
10408 | diagnose_sb_0 (gsi_p, context, | |
10409 | n ? (gimple) n->value : NULL); | |
10410 | } | |
10411 | } | |
10412 | break; | |
10413 | ||
75a70cf9 | 10414 | case GIMPLE_GOTO: |
1e8e9920 | 10415 | { |
75a70cf9 | 10416 | tree lab = gimple_goto_dest (stmt); |
1e8e9920 | 10417 | if (TREE_CODE (lab) != LABEL_DECL) |
10418 | break; | |
10419 | ||
10420 | n = splay_tree_lookup (all_labels, (splay_tree_key) lab); | |
75a70cf9 | 10421 | diagnose_sb_0 (gsi_p, context, n ? (gimple) n->value : NULL); |
1e8e9920 | 10422 | } |
10423 | break; | |
10424 | ||
75a70cf9 | 10425 | case GIMPLE_SWITCH: |
1e8e9920 | 10426 | { |
75a70cf9 | 10427 | unsigned int i; |
10428 | for (i = 0; i < gimple_switch_num_labels (stmt); ++i) | |
1e8e9920 | 10429 | { |
75a70cf9 | 10430 | tree lab = CASE_LABEL (gimple_switch_label (stmt, i)); |
1e8e9920 | 10431 | n = splay_tree_lookup (all_labels, (splay_tree_key) lab); |
75a70cf9 | 10432 | if (n && diagnose_sb_0 (gsi_p, context, (gimple) n->value)) |
1e8e9920 | 10433 | break; |
10434 | } | |
10435 | } | |
10436 | break; | |
10437 | ||
75a70cf9 | 10438 | case GIMPLE_RETURN: |
10439 | diagnose_sb_0 (gsi_p, context, NULL); | |
1e8e9920 | 10440 | break; |
10441 | ||
10442 | default: | |
10443 | break; | |
10444 | } | |
10445 | ||
10446 | return NULL_TREE; | |
10447 | } | |
10448 | ||
7740abd8 | 10449 | /* Called from tree-cfg.c::make_edges to create cfg edges for all GIMPLE_OMP |
10450 | codes. */ | |
10451 | bool | |
b2c0e0b7 | 10452 | make_gimple_omp_edges (basic_block bb, struct omp_region **region, |
10453 | int *region_idx) | |
7740abd8 | 10454 | { |
10455 | gimple last = last_stmt (bb); | |
10456 | enum gimple_code code = gimple_code (last); | |
10457 | struct omp_region *cur_region = *region; | |
10458 | bool fallthru = false; | |
10459 | ||
10460 | switch (code) | |
10461 | { | |
10462 | case GIMPLE_OMP_PARALLEL: | |
10463 | case GIMPLE_OMP_TASK: | |
10464 | case GIMPLE_OMP_FOR: | |
10465 | case GIMPLE_OMP_SINGLE: | |
10466 | case GIMPLE_OMP_TEAMS: | |
10467 | case GIMPLE_OMP_MASTER: | |
10468 | case GIMPLE_OMP_TASKGROUP: | |
10469 | case GIMPLE_OMP_ORDERED: | |
10470 | case GIMPLE_OMP_CRITICAL: | |
10471 | case GIMPLE_OMP_SECTION: | |
10472 | cur_region = new_omp_region (bb, code, cur_region); | |
10473 | fallthru = true; | |
10474 | break; | |
10475 | ||
10476 | case GIMPLE_OMP_TARGET: | |
10477 | cur_region = new_omp_region (bb, code, cur_region); | |
10478 | fallthru = true; | |
10479 | if (gimple_omp_target_kind (last) == GF_OMP_TARGET_KIND_UPDATE) | |
10480 | cur_region = cur_region->outer; | |
10481 | break; | |
10482 | ||
10483 | case GIMPLE_OMP_SECTIONS: | |
10484 | cur_region = new_omp_region (bb, code, cur_region); | |
10485 | fallthru = true; | |
10486 | break; | |
10487 | ||
10488 | case GIMPLE_OMP_SECTIONS_SWITCH: | |
10489 | fallthru = false; | |
10490 | break; | |
10491 | ||
10492 | case GIMPLE_OMP_ATOMIC_LOAD: | |
10493 | case GIMPLE_OMP_ATOMIC_STORE: | |
10494 | fallthru = true; | |
10495 | break; | |
10496 | ||
10497 | case GIMPLE_OMP_RETURN: | |
10498 | /* In the case of a GIMPLE_OMP_SECTION, the edge will go | |
10499 | somewhere other than the next block. This will be | |
10500 | created later. */ | |
10501 | cur_region->exit = bb; | |
10502 | fallthru = cur_region->type != GIMPLE_OMP_SECTION; | |
10503 | cur_region = cur_region->outer; | |
10504 | break; | |
10505 | ||
10506 | case GIMPLE_OMP_CONTINUE: | |
10507 | cur_region->cont = bb; | |
10508 | switch (cur_region->type) | |
10509 | { | |
10510 | case GIMPLE_OMP_FOR: | |
10511 | /* Mark all GIMPLE_OMP_FOR and GIMPLE_OMP_CONTINUE | |
10512 | succs edges as abnormal to prevent splitting | |
10513 | them. */ | |
10514 | single_succ_edge (cur_region->entry)->flags |= EDGE_ABNORMAL; | |
10515 | /* Make the loopback edge. */ | |
10516 | make_edge (bb, single_succ (cur_region->entry), | |
10517 | EDGE_ABNORMAL); | |
10518 | ||
10519 | /* Create an edge from GIMPLE_OMP_FOR to exit, which | |
10520 | corresponds to the case that the body of the loop | |
10521 | is not executed at all. */ | |
10522 | make_edge (cur_region->entry, bb->next_bb, EDGE_ABNORMAL); | |
10523 | make_edge (bb, bb->next_bb, EDGE_FALLTHRU | EDGE_ABNORMAL); | |
10524 | fallthru = false; | |
10525 | break; | |
10526 | ||
10527 | case GIMPLE_OMP_SECTIONS: | |
10528 | /* Wire up the edges into and out of the nested sections. */ | |
10529 | { | |
10530 | basic_block switch_bb = single_succ (cur_region->entry); | |
10531 | ||
10532 | struct omp_region *i; | |
10533 | for (i = cur_region->inner; i ; i = i->next) | |
10534 | { | |
10535 | gcc_assert (i->type == GIMPLE_OMP_SECTION); | |
10536 | make_edge (switch_bb, i->entry, 0); | |
10537 | make_edge (i->exit, bb, EDGE_FALLTHRU); | |
10538 | } | |
10539 | ||
10540 | /* Make the loopback edge to the block with | |
10541 | GIMPLE_OMP_SECTIONS_SWITCH. */ | |
10542 | make_edge (bb, switch_bb, 0); | |
10543 | ||
10544 | /* Make the edge from the switch to exit. */ | |
10545 | make_edge (switch_bb, bb->next_bb, 0); | |
10546 | fallthru = false; | |
10547 | } | |
10548 | break; | |
10549 | ||
10550 | default: | |
10551 | gcc_unreachable (); | |
10552 | } | |
10553 | break; | |
10554 | ||
10555 | default: | |
10556 | gcc_unreachable (); | |
10557 | } | |
10558 | ||
10559 | if (*region != cur_region) | |
b2c0e0b7 | 10560 | { |
10561 | *region = cur_region; | |
10562 | if (cur_region) | |
10563 | *region_idx = cur_region->entry->index; | |
10564 | else | |
10565 | *region_idx = 0; | |
10566 | } | |
7740abd8 | 10567 | |
10568 | return fallthru; | |
10569 | } | |
10570 | ||
bfec3452 | 10571 | static unsigned int |
10572 | diagnose_omp_structured_block_errors (void) | |
1e8e9920 | 10573 | { |
1e8e9920 | 10574 | struct walk_stmt_info wi; |
bfec3452 | 10575 | gimple_seq body = gimple_body (current_function_decl); |
1e8e9920 | 10576 | |
10577 | all_labels = splay_tree_new (splay_tree_compare_pointers, 0, 0); | |
10578 | ||
10579 | memset (&wi, 0, sizeof (wi)); | |
75a70cf9 | 10580 | walk_gimple_seq (body, diagnose_sb_1, NULL, &wi); |
1e8e9920 | 10581 | |
10582 | memset (&wi, 0, sizeof (wi)); | |
1e8e9920 | 10583 | wi.want_locations = true; |
e3a19533 | 10584 | walk_gimple_seq_mod (&body, diagnose_sb_2, NULL, &wi); |
10585 | ||
10586 | gimple_set_body (current_function_decl, body); | |
1e8e9920 | 10587 | |
10588 | splay_tree_delete (all_labels); | |
10589 | all_labels = NULL; | |
10590 | ||
bfec3452 | 10591 | return 0; |
1e8e9920 | 10592 | } |
10593 | ||
bfec3452 | 10594 | static bool |
10595 | gate_diagnose_omp_blocks (void) | |
10596 | { | |
a89e6c15 | 10597 | return flag_openmp || flag_cilkplus; |
bfec3452 | 10598 | } |
10599 | ||
cbe8bda8 | 10600 | namespace { |
10601 | ||
10602 | const pass_data pass_data_diagnose_omp_blocks = | |
10603 | { | |
10604 | GIMPLE_PASS, /* type */ | |
10605 | "*diagnose_omp_blocks", /* name */ | |
10606 | OPTGROUP_NONE, /* optinfo_flags */ | |
10607 | true, /* has_gate */ | |
10608 | true, /* has_execute */ | |
10609 | TV_NONE, /* tv_id */ | |
10610 | PROP_gimple_any, /* properties_required */ | |
10611 | 0, /* properties_provided */ | |
10612 | 0, /* properties_destroyed */ | |
10613 | 0, /* todo_flags_start */ | |
10614 | 0, /* todo_flags_finish */ | |
bfec3452 | 10615 | }; |
10616 | ||
cbe8bda8 | 10617 | class pass_diagnose_omp_blocks : public gimple_opt_pass |
10618 | { | |
10619 | public: | |
9af5ce0c | 10620 | pass_diagnose_omp_blocks (gcc::context *ctxt) |
10621 | : gimple_opt_pass (pass_data_diagnose_omp_blocks, ctxt) | |
cbe8bda8 | 10622 | {} |
10623 | ||
10624 | /* opt_pass methods: */ | |
10625 | bool gate () { return gate_diagnose_omp_blocks (); } | |
10626 | unsigned int execute () { | |
10627 | return diagnose_omp_structured_block_errors (); | |
10628 | } | |
10629 | ||
10630 | }; // class pass_diagnose_omp_blocks | |
10631 | ||
10632 | } // anon namespace | |
10633 | ||
10634 | gimple_opt_pass * | |
10635 | make_pass_diagnose_omp_blocks (gcc::context *ctxt) | |
10636 | { | |
10637 | return new pass_diagnose_omp_blocks (ctxt); | |
10638 | } | |
d09768a4 | 10639 | \f |
10640 | /* SIMD clone supporting code. */ | |
10641 | ||
10642 | /* Allocate a fresh `simd_clone' and return it. NARGS is the number | |
10643 | of arguments to reserve space for. */ | |
10644 | ||
10645 | static struct cgraph_simd_clone * | |
10646 | simd_clone_struct_alloc (int nargs) | |
10647 | { | |
10648 | struct cgraph_simd_clone *clone_info; | |
10649 | size_t len = (sizeof (struct cgraph_simd_clone) | |
10650 | + nargs * sizeof (struct cgraph_simd_clone_arg)); | |
10651 | clone_info = (struct cgraph_simd_clone *) | |
ea7d8c7a | 10652 | ggc_internal_cleared_alloc (len); |
d09768a4 | 10653 | return clone_info; |
10654 | } | |
10655 | ||
10656 | /* Make a copy of the `struct cgraph_simd_clone' in FROM to TO. */ | |
10657 | ||
10658 | static inline void | |
10659 | simd_clone_struct_copy (struct cgraph_simd_clone *to, | |
10660 | struct cgraph_simd_clone *from) | |
10661 | { | |
10662 | memcpy (to, from, (sizeof (struct cgraph_simd_clone) | |
46c0fd4b | 10663 | + ((from->nargs - from->inbranch) |
10664 | * sizeof (struct cgraph_simd_clone_arg)))); | |
d09768a4 | 10665 | } |
10666 | ||
10667 | /* Return vector of parameter types of function FNDECL. This uses | |
10668 | TYPE_ARG_TYPES if available, otherwise falls back to types of | |
10669 | DECL_ARGUMENTS types. */ | |
10670 | ||
10671 | vec<tree> | |
10672 | simd_clone_vector_of_formal_parm_types (tree fndecl) | |
10673 | { | |
10674 | if (TYPE_ARG_TYPES (TREE_TYPE (fndecl))) | |
10675 | return ipa_get_vector_of_formal_parm_types (TREE_TYPE (fndecl)); | |
10676 | vec<tree> args = ipa_get_vector_of_formal_parms (fndecl); | |
10677 | unsigned int i; | |
10678 | tree arg; | |
10679 | FOR_EACH_VEC_ELT (args, i, arg) | |
10680 | args[i] = TREE_TYPE (args[i]); | |
10681 | return args; | |
10682 | } | |
10683 | ||
10684 | /* Given a simd function in NODE, extract the simd specific | |
10685 | information from the OMP clauses passed in CLAUSES, and return | |
10686 | the struct cgraph_simd_clone * if it should be cloned. *INBRANCH_SPECIFIED | |
10687 | is set to TRUE if the `inbranch' or `notinbranch' clause specified, | |
10688 | otherwise set to FALSE. */ | |
10689 | ||
10690 | static struct cgraph_simd_clone * | |
10691 | simd_clone_clauses_extract (struct cgraph_node *node, tree clauses, | |
10692 | bool *inbranch_specified) | |
10693 | { | |
10694 | vec<tree> args = simd_clone_vector_of_formal_parm_types (node->decl); | |
10695 | tree t; | |
10696 | int n; | |
10697 | *inbranch_specified = false; | |
10698 | ||
10699 | n = args.length (); | |
10700 | if (n > 0 && args.last () == void_type_node) | |
10701 | n--; | |
10702 | ||
10703 | /* To distinguish from an OpenMP simd clone, Cilk Plus functions to | |
10704 | be cloned have a distinctive artificial label in addition to "omp | |
10705 | declare simd". */ | |
10706 | bool cilk_clone | |
a89e6c15 | 10707 | = (flag_cilkplus |
74acc703 | 10708 | && lookup_attribute ("cilk simd function", |
d09768a4 | 10709 | DECL_ATTRIBUTES (node->decl))); |
10710 | ||
10711 | /* Allocate one more than needed just in case this is an in-branch | |
10712 | clone which will require a mask argument. */ | |
10713 | struct cgraph_simd_clone *clone_info = simd_clone_struct_alloc (n + 1); | |
10714 | clone_info->nargs = n; | |
10715 | clone_info->cilk_elemental = cilk_clone; | |
10716 | ||
10717 | if (!clauses) | |
10718 | { | |
10719 | args.release (); | |
10720 | return clone_info; | |
10721 | } | |
10722 | clauses = TREE_VALUE (clauses); | |
10723 | if (!clauses || TREE_CODE (clauses) != OMP_CLAUSE) | |
10724 | return clone_info; | |
10725 | ||
10726 | for (t = clauses; t; t = OMP_CLAUSE_CHAIN (t)) | |
10727 | { | |
10728 | switch (OMP_CLAUSE_CODE (t)) | |
10729 | { | |
10730 | case OMP_CLAUSE_INBRANCH: | |
10731 | clone_info->inbranch = 1; | |
10732 | *inbranch_specified = true; | |
10733 | break; | |
10734 | case OMP_CLAUSE_NOTINBRANCH: | |
10735 | clone_info->inbranch = 0; | |
10736 | *inbranch_specified = true; | |
10737 | break; | |
10738 | case OMP_CLAUSE_SIMDLEN: | |
10739 | clone_info->simdlen | |
10740 | = TREE_INT_CST_LOW (OMP_CLAUSE_SIMDLEN_EXPR (t)); | |
10741 | break; | |
10742 | case OMP_CLAUSE_LINEAR: | |
10743 | { | |
10744 | tree decl = OMP_CLAUSE_DECL (t); | |
10745 | tree step = OMP_CLAUSE_LINEAR_STEP (t); | |
10746 | int argno = TREE_INT_CST_LOW (decl); | |
10747 | if (OMP_CLAUSE_LINEAR_VARIABLE_STRIDE (t)) | |
10748 | { | |
10749 | clone_info->args[argno].arg_type | |
10750 | = SIMD_CLONE_ARG_TYPE_LINEAR_VARIABLE_STEP; | |
10751 | clone_info->args[argno].linear_step = tree_to_shwi (step); | |
10752 | gcc_assert (clone_info->args[argno].linear_step >= 0 | |
10753 | && clone_info->args[argno].linear_step < n); | |
10754 | } | |
10755 | else | |
10756 | { | |
10757 | if (POINTER_TYPE_P (args[argno])) | |
10758 | step = fold_convert (ssizetype, step); | |
10759 | if (!tree_fits_shwi_p (step)) | |
10760 | { | |
10761 | warning_at (OMP_CLAUSE_LOCATION (t), 0, | |
10762 | "ignoring large linear step"); | |
10763 | args.release (); | |
10764 | return NULL; | |
10765 | } | |
10766 | else if (integer_zerop (step)) | |
10767 | { | |
10768 | warning_at (OMP_CLAUSE_LOCATION (t), 0, | |
10769 | "ignoring zero linear step"); | |
10770 | args.release (); | |
10771 | return NULL; | |
10772 | } | |
10773 | else | |
10774 | { | |
10775 | clone_info->args[argno].arg_type | |
10776 | = SIMD_CLONE_ARG_TYPE_LINEAR_CONSTANT_STEP; | |
10777 | clone_info->args[argno].linear_step = tree_to_shwi (step); | |
10778 | } | |
10779 | } | |
10780 | break; | |
10781 | } | |
10782 | case OMP_CLAUSE_UNIFORM: | |
10783 | { | |
10784 | tree decl = OMP_CLAUSE_DECL (t); | |
10785 | int argno = tree_to_uhwi (decl); | |
10786 | clone_info->args[argno].arg_type | |
10787 | = SIMD_CLONE_ARG_TYPE_UNIFORM; | |
10788 | break; | |
10789 | } | |
10790 | case OMP_CLAUSE_ALIGNED: | |
10791 | { | |
10792 | tree decl = OMP_CLAUSE_DECL (t); | |
10793 | int argno = tree_to_uhwi (decl); | |
10794 | clone_info->args[argno].alignment | |
10795 | = TREE_INT_CST_LOW (OMP_CLAUSE_ALIGNED_ALIGNMENT (t)); | |
10796 | break; | |
10797 | } | |
10798 | default: | |
10799 | break; | |
10800 | } | |
10801 | } | |
10802 | args.release (); | |
10803 | return clone_info; | |
10804 | } | |
10805 | ||
10806 | /* Given a SIMD clone in NODE, calculate the characteristic data | |
10807 | type and return the coresponding type. The characteristic data | |
10808 | type is computed as described in the Intel Vector ABI. */ | |
10809 | ||
10810 | static tree | |
10811 | simd_clone_compute_base_data_type (struct cgraph_node *node, | |
10812 | struct cgraph_simd_clone *clone_info) | |
10813 | { | |
10814 | tree type = integer_type_node; | |
10815 | tree fndecl = node->decl; | |
10816 | ||
10817 | /* a) For non-void function, the characteristic data type is the | |
10818 | return type. */ | |
10819 | if (TREE_CODE (TREE_TYPE (TREE_TYPE (fndecl))) != VOID_TYPE) | |
10820 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
10821 | ||
10822 | /* b) If the function has any non-uniform, non-linear parameters, | |
10823 | then the characteristic data type is the type of the first | |
10824 | such parameter. */ | |
10825 | else | |
10826 | { | |
10827 | vec<tree> map = simd_clone_vector_of_formal_parm_types (fndecl); | |
10828 | for (unsigned int i = 0; i < clone_info->nargs; ++i) | |
10829 | if (clone_info->args[i].arg_type == SIMD_CLONE_ARG_TYPE_VECTOR) | |
10830 | { | |
10831 | type = map[i]; | |
10832 | break; | |
10833 | } | |
10834 | map.release (); | |
10835 | } | |
10836 | ||
10837 | /* c) If the characteristic data type determined by a) or b) above | |
10838 | is struct, union, or class type which is pass-by-value (except | |
10839 | for the type that maps to the built-in complex data type), the | |
10840 | characteristic data type is int. */ | |
10841 | if (RECORD_OR_UNION_TYPE_P (type) | |
10842 | && !aggregate_value_p (type, NULL) | |
10843 | && TREE_CODE (type) != COMPLEX_TYPE) | |
10844 | return integer_type_node; | |
10845 | ||
10846 | /* d) If none of the above three classes is applicable, the | |
10847 | characteristic data type is int. */ | |
10848 | ||
10849 | return type; | |
10850 | ||
10851 | /* e) For Intel Xeon Phi native and offload compilation, if the | |
10852 | resulting characteristic data type is 8-bit or 16-bit integer | |
10853 | data type, the characteristic data type is int. */ | |
10854 | /* Well, we don't handle Xeon Phi yet. */ | |
10855 | } | |
10856 | ||
10857 | static tree | |
10858 | simd_clone_mangle (struct cgraph_node *node, | |
10859 | struct cgraph_simd_clone *clone_info) | |
10860 | { | |
10861 | char vecsize_mangle = clone_info->vecsize_mangle; | |
10862 | char mask = clone_info->inbranch ? 'M' : 'N'; | |
10863 | unsigned int simdlen = clone_info->simdlen; | |
10864 | unsigned int n; | |
10865 | pretty_printer pp; | |
10866 | ||
10867 | gcc_assert (vecsize_mangle && simdlen); | |
10868 | ||
10869 | pp_string (&pp, "_ZGV"); | |
10870 | pp_character (&pp, vecsize_mangle); | |
10871 | pp_character (&pp, mask); | |
10872 | pp_decimal_int (&pp, simdlen); | |
10873 | ||
10874 | for (n = 0; n < clone_info->nargs; ++n) | |
10875 | { | |
10876 | struct cgraph_simd_clone_arg arg = clone_info->args[n]; | |
10877 | ||
10878 | if (arg.arg_type == SIMD_CLONE_ARG_TYPE_UNIFORM) | |
10879 | pp_character (&pp, 'u'); | |
10880 | else if (arg.arg_type == SIMD_CLONE_ARG_TYPE_LINEAR_CONSTANT_STEP) | |
10881 | { | |
10882 | gcc_assert (arg.linear_step != 0); | |
10883 | pp_character (&pp, 'l'); | |
10884 | if (arg.linear_step > 1) | |
10885 | pp_unsigned_wide_integer (&pp, arg.linear_step); | |
10886 | else if (arg.linear_step < 0) | |
10887 | { | |
10888 | pp_character (&pp, 'n'); | |
10889 | pp_unsigned_wide_integer (&pp, (-(unsigned HOST_WIDE_INT) | |
10890 | arg.linear_step)); | |
10891 | } | |
10892 | } | |
10893 | else if (arg.arg_type == SIMD_CLONE_ARG_TYPE_LINEAR_VARIABLE_STEP) | |
10894 | { | |
10895 | pp_character (&pp, 's'); | |
10896 | pp_unsigned_wide_integer (&pp, arg.linear_step); | |
10897 | } | |
10898 | else | |
10899 | pp_character (&pp, 'v'); | |
10900 | if (arg.alignment) | |
10901 | { | |
10902 | pp_character (&pp, 'a'); | |
10903 | pp_decimal_int (&pp, arg.alignment); | |
10904 | } | |
10905 | } | |
10906 | ||
10907 | pp_underscore (&pp); | |
10908 | pp_string (&pp, | |
10909 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (node->decl))); | |
10910 | const char *str = pp_formatted_text (&pp); | |
10911 | ||
10912 | /* If there already is a SIMD clone with the same mangled name, don't | |
10913 | add another one. This can happen e.g. for | |
10914 | #pragma omp declare simd | |
10915 | #pragma omp declare simd simdlen(8) | |
10916 | int foo (int, int); | |
10917 | if the simdlen is assumed to be 8 for the first one, etc. */ | |
10918 | for (struct cgraph_node *clone = node->simd_clones; clone; | |
10919 | clone = clone->simdclone->next_clone) | |
10920 | if (strcmp (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (clone->decl)), | |
10921 | str) == 0) | |
10922 | return NULL_TREE; | |
10923 | ||
10924 | return get_identifier (str); | |
10925 | } | |
10926 | ||
10927 | /* Create a simd clone of OLD_NODE and return it. */ | |
10928 | ||
10929 | static struct cgraph_node * | |
10930 | simd_clone_create (struct cgraph_node *old_node) | |
10931 | { | |
10932 | struct cgraph_node *new_node; | |
10933 | if (old_node->definition) | |
ea0695f9 | 10934 | { |
10935 | if (!cgraph_function_with_gimple_body_p (old_node)) | |
10936 | return NULL; | |
10937 | cgraph_get_body (old_node); | |
10938 | new_node = cgraph_function_versioning (old_node, vNULL, NULL, NULL, | |
10939 | false, NULL, NULL, "simdclone"); | |
10940 | } | |
d09768a4 | 10941 | else |
10942 | { | |
10943 | tree old_decl = old_node->decl; | |
10944 | tree new_decl = copy_node (old_node->decl); | |
10945 | DECL_NAME (new_decl) = clone_function_name (old_decl, "simdclone"); | |
10946 | SET_DECL_ASSEMBLER_NAME (new_decl, DECL_NAME (new_decl)); | |
10947 | SET_DECL_RTL (new_decl, NULL); | |
10948 | DECL_STATIC_CONSTRUCTOR (new_decl) = 0; | |
10949 | DECL_STATIC_DESTRUCTOR (new_decl) = 0; | |
10950 | new_node | |
10951 | = cgraph_copy_node_for_versioning (old_node, new_decl, vNULL, NULL); | |
10952 | cgraph_call_function_insertion_hooks (new_node); | |
10953 | } | |
10954 | if (new_node == NULL) | |
10955 | return new_node; | |
10956 | ||
10957 | TREE_PUBLIC (new_node->decl) = TREE_PUBLIC (old_node->decl); | |
10958 | ||
10959 | /* The function cgraph_function_versioning () will force the new | |
10960 | symbol local. Undo this, and inherit external visability from | |
10961 | the old node. */ | |
10962 | new_node->local.local = old_node->local.local; | |
10963 | new_node->externally_visible = old_node->externally_visible; | |
10964 | ||
10965 | return new_node; | |
10966 | } | |
10967 | ||
10968 | /* Adjust the return type of the given function to its appropriate | |
10969 | vector counterpart. Returns a simd array to be used throughout the | |
10970 | function as a return value. */ | |
10971 | ||
10972 | static tree | |
10973 | simd_clone_adjust_return_type (struct cgraph_node *node) | |
10974 | { | |
10975 | tree fndecl = node->decl; | |
10976 | tree orig_rettype = TREE_TYPE (TREE_TYPE (fndecl)); | |
10977 | unsigned int veclen; | |
10978 | tree t; | |
10979 | ||
10980 | /* Adjust the function return type. */ | |
10981 | if (orig_rettype == void_type_node) | |
10982 | return NULL_TREE; | |
10983 | TREE_TYPE (fndecl) = build_distinct_type_copy (TREE_TYPE (fndecl)); | |
10984 | if (INTEGRAL_TYPE_P (TREE_TYPE (TREE_TYPE (fndecl))) | |
10985 | || POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (fndecl)))) | |
10986 | veclen = node->simdclone->vecsize_int; | |
10987 | else | |
10988 | veclen = node->simdclone->vecsize_float; | |
10989 | veclen /= GET_MODE_BITSIZE (TYPE_MODE (TREE_TYPE (TREE_TYPE (fndecl)))); | |
10990 | if (veclen > node->simdclone->simdlen) | |
10991 | veclen = node->simdclone->simdlen; | |
10992 | if (veclen == node->simdclone->simdlen) | |
10993 | TREE_TYPE (TREE_TYPE (fndecl)) | |
10994 | = build_vector_type (TREE_TYPE (TREE_TYPE (fndecl)), | |
10995 | node->simdclone->simdlen); | |
10996 | else | |
10997 | { | |
10998 | t = build_vector_type (TREE_TYPE (TREE_TYPE (fndecl)), veclen); | |
10999 | t = build_array_type_nelts (t, node->simdclone->simdlen / veclen); | |
11000 | TREE_TYPE (TREE_TYPE (fndecl)) = t; | |
11001 | } | |
11002 | if (!node->definition) | |
11003 | return NULL_TREE; | |
11004 | ||
11005 | t = DECL_RESULT (fndecl); | |
11006 | /* Adjust the DECL_RESULT. */ | |
11007 | gcc_assert (TREE_TYPE (t) != void_type_node); | |
11008 | TREE_TYPE (t) = TREE_TYPE (TREE_TYPE (fndecl)); | |
11009 | relayout_decl (t); | |
11010 | ||
11011 | tree atype = build_array_type_nelts (orig_rettype, | |
11012 | node->simdclone->simdlen); | |
11013 | if (veclen != node->simdclone->simdlen) | |
11014 | return build1 (VIEW_CONVERT_EXPR, atype, t); | |
11015 | ||
11016 | /* Set up a SIMD array to use as the return value. */ | |
11017 | tree retval = create_tmp_var_raw (atype, "retval"); | |
11018 | gimple_add_tmp_var (retval); | |
11019 | return retval; | |
11020 | } | |
11021 | ||
11022 | /* Each vector argument has a corresponding array to be used locally | |
11023 | as part of the eventual loop. Create such temporary array and | |
11024 | return it. | |
11025 | ||
11026 | PREFIX is the prefix to be used for the temporary. | |
11027 | ||
11028 | TYPE is the inner element type. | |
11029 | ||
11030 | SIMDLEN is the number of elements. */ | |
11031 | ||
11032 | static tree | |
11033 | create_tmp_simd_array (const char *prefix, tree type, int simdlen) | |
11034 | { | |
11035 | tree atype = build_array_type_nelts (type, simdlen); | |
11036 | tree avar = create_tmp_var_raw (atype, prefix); | |
11037 | gimple_add_tmp_var (avar); | |
11038 | return avar; | |
11039 | } | |
11040 | ||
11041 | /* Modify the function argument types to their corresponding vector | |
11042 | counterparts if appropriate. Also, create one array for each simd | |
11043 | argument to be used locally when using the function arguments as | |
11044 | part of the loop. | |
11045 | ||
11046 | NODE is the function whose arguments are to be adjusted. | |
11047 | ||
11048 | Returns an adjustment vector that will be filled describing how the | |
11049 | argument types will be adjusted. */ | |
11050 | ||
11051 | static ipa_parm_adjustment_vec | |
11052 | simd_clone_adjust_argument_types (struct cgraph_node *node) | |
11053 | { | |
11054 | vec<tree> args; | |
11055 | ipa_parm_adjustment_vec adjustments; | |
11056 | ||
11057 | if (node->definition) | |
11058 | args = ipa_get_vector_of_formal_parms (node->decl); | |
11059 | else | |
11060 | args = simd_clone_vector_of_formal_parm_types (node->decl); | |
11061 | adjustments.create (args.length ()); | |
11062 | unsigned i, j, veclen; | |
11063 | struct ipa_parm_adjustment adj; | |
11064 | for (i = 0; i < node->simdclone->nargs; ++i) | |
11065 | { | |
11066 | memset (&adj, 0, sizeof (adj)); | |
11067 | tree parm = args[i]; | |
11068 | tree parm_type = node->definition ? TREE_TYPE (parm) : parm; | |
11069 | adj.base_index = i; | |
11070 | adj.base = parm; | |
11071 | ||
11072 | node->simdclone->args[i].orig_arg = node->definition ? parm : NULL_TREE; | |
11073 | node->simdclone->args[i].orig_type = parm_type; | |
11074 | ||
11075 | if (node->simdclone->args[i].arg_type != SIMD_CLONE_ARG_TYPE_VECTOR) | |
11076 | { | |
11077 | /* No adjustment necessary for scalar arguments. */ | |
11078 | adj.op = IPA_PARM_OP_COPY; | |
11079 | } | |
11080 | else | |
11081 | { | |
11082 | if (INTEGRAL_TYPE_P (parm_type) || POINTER_TYPE_P (parm_type)) | |
11083 | veclen = node->simdclone->vecsize_int; | |
11084 | else | |
11085 | veclen = node->simdclone->vecsize_float; | |
11086 | veclen /= GET_MODE_BITSIZE (TYPE_MODE (parm_type)); | |
11087 | if (veclen > node->simdclone->simdlen) | |
11088 | veclen = node->simdclone->simdlen; | |
11089 | adj.arg_prefix = "simd"; | |
11090 | adj.type = build_vector_type (parm_type, veclen); | |
11091 | node->simdclone->args[i].vector_type = adj.type; | |
11092 | for (j = veclen; j < node->simdclone->simdlen; j += veclen) | |
11093 | { | |
11094 | adjustments.safe_push (adj); | |
11095 | if (j == veclen) | |
11096 | { | |
11097 | memset (&adj, 0, sizeof (adj)); | |
11098 | adj.op = IPA_PARM_OP_NEW; | |
11099 | adj.arg_prefix = "simd"; | |
11100 | adj.base_index = i; | |
11101 | adj.type = node->simdclone->args[i].vector_type; | |
11102 | } | |
11103 | } | |
11104 | ||
11105 | if (node->definition) | |
11106 | node->simdclone->args[i].simd_array | |
11107 | = create_tmp_simd_array (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
11108 | parm_type, node->simdclone->simdlen); | |
11109 | } | |
11110 | adjustments.safe_push (adj); | |
11111 | } | |
11112 | ||
11113 | if (node->simdclone->inbranch) | |
11114 | { | |
11115 | tree base_type | |
11116 | = simd_clone_compute_base_data_type (node->simdclone->origin, | |
11117 | node->simdclone); | |
11118 | ||
11119 | memset (&adj, 0, sizeof (adj)); | |
11120 | adj.op = IPA_PARM_OP_NEW; | |
11121 | adj.arg_prefix = "mask"; | |
11122 | ||
11123 | adj.base_index = i; | |
11124 | if (INTEGRAL_TYPE_P (base_type) || POINTER_TYPE_P (base_type)) | |
11125 | veclen = node->simdclone->vecsize_int; | |
11126 | else | |
11127 | veclen = node->simdclone->vecsize_float; | |
11128 | veclen /= GET_MODE_BITSIZE (TYPE_MODE (base_type)); | |
11129 | if (veclen > node->simdclone->simdlen) | |
11130 | veclen = node->simdclone->simdlen; | |
11131 | adj.type = build_vector_type (base_type, veclen); | |
11132 | adjustments.safe_push (adj); | |
11133 | ||
11134 | for (j = veclen; j < node->simdclone->simdlen; j += veclen) | |
11135 | adjustments.safe_push (adj); | |
11136 | ||
11137 | /* We have previously allocated one extra entry for the mask. Use | |
11138 | it and fill it. */ | |
11139 | struct cgraph_simd_clone *sc = node->simdclone; | |
11140 | sc->nargs++; | |
11141 | if (node->definition) | |
11142 | { | |
11143 | sc->args[i].orig_arg | |
11144 | = build_decl (UNKNOWN_LOCATION, PARM_DECL, NULL, base_type); | |
11145 | sc->args[i].simd_array | |
11146 | = create_tmp_simd_array ("mask", base_type, sc->simdlen); | |
11147 | } | |
11148 | sc->args[i].orig_type = base_type; | |
11149 | sc->args[i].arg_type = SIMD_CLONE_ARG_TYPE_MASK; | |
11150 | } | |
11151 | ||
11152 | if (node->definition) | |
11153 | ipa_modify_formal_parameters (node->decl, adjustments); | |
11154 | else | |
11155 | { | |
11156 | tree new_arg_types = NULL_TREE, new_reversed; | |
11157 | bool last_parm_void = false; | |
11158 | if (args.length () > 0 && args.last () == void_type_node) | |
11159 | last_parm_void = true; | |
11160 | ||
11161 | gcc_assert (TYPE_ARG_TYPES (TREE_TYPE (node->decl))); | |
11162 | j = adjustments.length (); | |
11163 | for (i = 0; i < j; i++) | |
11164 | { | |
11165 | struct ipa_parm_adjustment *adj = &adjustments[i]; | |
11166 | tree ptype; | |
11167 | if (adj->op == IPA_PARM_OP_COPY) | |
11168 | ptype = args[adj->base_index]; | |
11169 | else | |
11170 | ptype = adj->type; | |
11171 | new_arg_types = tree_cons (NULL_TREE, ptype, new_arg_types); | |
11172 | } | |
11173 | new_reversed = nreverse (new_arg_types); | |
11174 | if (last_parm_void) | |
11175 | { | |
11176 | if (new_reversed) | |
11177 | TREE_CHAIN (new_arg_types) = void_list_node; | |
11178 | else | |
11179 | new_reversed = void_list_node; | |
11180 | } | |
11181 | ||
11182 | tree new_type = build_distinct_type_copy (TREE_TYPE (node->decl)); | |
11183 | TYPE_ARG_TYPES (new_type) = new_reversed; | |
11184 | TREE_TYPE (node->decl) = new_type; | |
11185 | ||
11186 | adjustments.release (); | |
11187 | } | |
11188 | args.release (); | |
11189 | return adjustments; | |
11190 | } | |
11191 | ||
11192 | /* Initialize and copy the function arguments in NODE to their | |
11193 | corresponding local simd arrays. Returns a fresh gimple_seq with | |
11194 | the instruction sequence generated. */ | |
11195 | ||
11196 | static gimple_seq | |
11197 | simd_clone_init_simd_arrays (struct cgraph_node *node, | |
11198 | ipa_parm_adjustment_vec adjustments) | |
11199 | { | |
11200 | gimple_seq seq = NULL; | |
11201 | unsigned i = 0, j = 0, k; | |
11202 | ||
11203 | for (tree arg = DECL_ARGUMENTS (node->decl); | |
11204 | arg; | |
11205 | arg = DECL_CHAIN (arg), i++, j++) | |
11206 | { | |
11207 | if (adjustments[j].op == IPA_PARM_OP_COPY) | |
11208 | continue; | |
11209 | ||
11210 | node->simdclone->args[i].vector_arg = arg; | |
11211 | ||
11212 | tree array = node->simdclone->args[i].simd_array; | |
11213 | if (TYPE_VECTOR_SUBPARTS (TREE_TYPE (arg)) == node->simdclone->simdlen) | |
11214 | { | |
11215 | tree ptype = build_pointer_type (TREE_TYPE (TREE_TYPE (array))); | |
11216 | tree ptr = build_fold_addr_expr (array); | |
11217 | tree t = build2 (MEM_REF, TREE_TYPE (arg), ptr, | |
11218 | build_int_cst (ptype, 0)); | |
11219 | t = build2 (MODIFY_EXPR, TREE_TYPE (t), t, arg); | |
11220 | gimplify_and_add (t, &seq); | |
11221 | } | |
11222 | else | |
11223 | { | |
11224 | unsigned int simdlen = TYPE_VECTOR_SUBPARTS (TREE_TYPE (arg)); | |
11225 | tree ptype = build_pointer_type (TREE_TYPE (TREE_TYPE (array))); | |
11226 | for (k = 0; k < node->simdclone->simdlen; k += simdlen) | |
11227 | { | |
11228 | tree ptr = build_fold_addr_expr (array); | |
11229 | int elemsize; | |
11230 | if (k) | |
11231 | { | |
11232 | arg = DECL_CHAIN (arg); | |
11233 | j++; | |
11234 | } | |
11235 | elemsize | |
11236 | = GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (TREE_TYPE (arg)))); | |
11237 | tree t = build2 (MEM_REF, TREE_TYPE (arg), ptr, | |
11238 | build_int_cst (ptype, k * elemsize)); | |
11239 | t = build2 (MODIFY_EXPR, TREE_TYPE (t), t, arg); | |
11240 | gimplify_and_add (t, &seq); | |
11241 | } | |
11242 | } | |
11243 | } | |
11244 | return seq; | |
11245 | } | |
11246 | ||
11247 | /* Callback info for ipa_simd_modify_stmt_ops below. */ | |
11248 | ||
11249 | struct modify_stmt_info { | |
11250 | ipa_parm_adjustment_vec adjustments; | |
11251 | gimple stmt; | |
11252 | /* True if the parent statement was modified by | |
11253 | ipa_simd_modify_stmt_ops. */ | |
11254 | bool modified; | |
11255 | }; | |
11256 | ||
11257 | /* Callback for walk_gimple_op. | |
11258 | ||
11259 | Adjust operands from a given statement as specified in the | |
11260 | adjustments vector in the callback data. */ | |
11261 | ||
11262 | static tree | |
11263 | ipa_simd_modify_stmt_ops (tree *tp, int *walk_subtrees, void *data) | |
11264 | { | |
11265 | struct walk_stmt_info *wi = (struct walk_stmt_info *) data; | |
11266 | if (!SSA_VAR_P (*tp)) | |
11267 | { | |
11268 | /* Make sure we treat subtrees as a RHS. This makes sure that | |
11269 | when examining the `*foo' in *foo=x, the `foo' get treated as | |
11270 | a use properly. */ | |
11271 | wi->is_lhs = false; | |
11272 | wi->val_only = true; | |
11273 | if (TYPE_P (*tp)) | |
11274 | *walk_subtrees = 0; | |
11275 | return NULL_TREE; | |
11276 | } | |
11277 | struct modify_stmt_info *info = (struct modify_stmt_info *) wi->info; | |
11278 | struct ipa_parm_adjustment *cand | |
11279 | = ipa_get_adjustment_candidate (&tp, NULL, info->adjustments, true); | |
11280 | if (!cand) | |
11281 | return NULL_TREE; | |
11282 | ||
11283 | tree t = *tp; | |
11284 | tree repl = make_ssa_name (TREE_TYPE (t), NULL); | |
11285 | ||
11286 | gimple stmt; | |
11287 | gimple_stmt_iterator gsi = gsi_for_stmt (info->stmt); | |
11288 | if (wi->is_lhs) | |
11289 | { | |
11290 | stmt = gimple_build_assign (unshare_expr (cand->new_decl), repl); | |
11291 | gsi_insert_after (&gsi, stmt, GSI_SAME_STMT); | |
11292 | SSA_NAME_DEF_STMT (repl) = info->stmt; | |
11293 | } | |
11294 | else | |
11295 | { | |
11296 | /* You'd think we could skip the extra SSA variable when | |
11297 | wi->val_only=true, but we may have `*var' which will get | |
11298 | replaced into `*var_array[iter]' and will likely be something | |
11299 | not gimple. */ | |
11300 | stmt = gimple_build_assign (repl, unshare_expr (cand->new_decl)); | |
11301 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
11302 | } | |
11303 | ||
11304 | if (!useless_type_conversion_p (TREE_TYPE (*tp), TREE_TYPE (repl))) | |
11305 | { | |
11306 | tree vce = build1 (VIEW_CONVERT_EXPR, TREE_TYPE (*tp), repl); | |
11307 | *tp = vce; | |
11308 | } | |
11309 | else | |
11310 | *tp = repl; | |
11311 | ||
11312 | info->modified = true; | |
11313 | wi->is_lhs = false; | |
11314 | wi->val_only = true; | |
11315 | return NULL_TREE; | |
11316 | } | |
11317 | ||
11318 | /* Traverse the function body and perform all modifications as | |
11319 | described in ADJUSTMENTS. At function return, ADJUSTMENTS will be | |
11320 | modified such that the replacement/reduction value will now be an | |
11321 | offset into the corresponding simd_array. | |
11322 | ||
11323 | This function will replace all function argument uses with their | |
11324 | corresponding simd array elements, and ajust the return values | |
11325 | accordingly. */ | |
11326 | ||
11327 | static void | |
11328 | ipa_simd_modify_function_body (struct cgraph_node *node, | |
11329 | ipa_parm_adjustment_vec adjustments, | |
11330 | tree retval_array, tree iter) | |
11331 | { | |
11332 | basic_block bb; | |
11333 | unsigned int i, j; | |
11334 | ||
11335 | /* Re-use the adjustments array, but this time use it to replace | |
11336 | every function argument use to an offset into the corresponding | |
11337 | simd_array. */ | |
11338 | for (i = 0, j = 0; i < node->simdclone->nargs; ++i, ++j) | |
11339 | { | |
11340 | if (!node->simdclone->args[i].vector_arg) | |
11341 | continue; | |
11342 | ||
11343 | tree basetype = TREE_TYPE (node->simdclone->args[i].orig_arg); | |
11344 | tree vectype = TREE_TYPE (node->simdclone->args[i].vector_arg); | |
11345 | adjustments[j].new_decl | |
11346 | = build4 (ARRAY_REF, | |
11347 | basetype, | |
11348 | node->simdclone->args[i].simd_array, | |
11349 | iter, | |
11350 | NULL_TREE, NULL_TREE); | |
11351 | if (adjustments[j].op == IPA_PARM_OP_NONE | |
11352 | && TYPE_VECTOR_SUBPARTS (vectype) < node->simdclone->simdlen) | |
11353 | j += node->simdclone->simdlen / TYPE_VECTOR_SUBPARTS (vectype) - 1; | |
11354 | } | |
11355 | ||
11356 | struct modify_stmt_info info; | |
11357 | info.adjustments = adjustments; | |
11358 | ||
11359 | FOR_EACH_BB_FN (bb, DECL_STRUCT_FUNCTION (node->decl)) | |
11360 | { | |
11361 | gimple_stmt_iterator gsi; | |
11362 | ||
11363 | gsi = gsi_start_bb (bb); | |
11364 | while (!gsi_end_p (gsi)) | |
11365 | { | |
11366 | gimple stmt = gsi_stmt (gsi); | |
11367 | info.stmt = stmt; | |
11368 | struct walk_stmt_info wi; | |
11369 | ||
11370 | memset (&wi, 0, sizeof (wi)); | |
11371 | info.modified = false; | |
11372 | wi.info = &info; | |
11373 | walk_gimple_op (stmt, ipa_simd_modify_stmt_ops, &wi); | |
11374 | ||
11375 | if (gimple_code (stmt) == GIMPLE_RETURN) | |
11376 | { | |
11377 | tree retval = gimple_return_retval (stmt); | |
11378 | if (!retval) | |
11379 | { | |
11380 | gsi_remove (&gsi, true); | |
11381 | continue; | |
11382 | } | |
11383 | ||
11384 | /* Replace `return foo' with `retval_array[iter] = foo'. */ | |
11385 | tree ref = build4 (ARRAY_REF, TREE_TYPE (retval), | |
11386 | retval_array, iter, NULL, NULL); | |
11387 | stmt = gimple_build_assign (ref, retval); | |
11388 | gsi_replace (&gsi, stmt, true); | |
11389 | info.modified = true; | |
11390 | } | |
11391 | ||
11392 | if (info.modified) | |
11393 | { | |
11394 | update_stmt (stmt); | |
11395 | if (maybe_clean_eh_stmt (stmt)) | |
11396 | gimple_purge_dead_eh_edges (gimple_bb (stmt)); | |
11397 | } | |
11398 | gsi_next (&gsi); | |
11399 | } | |
11400 | } | |
11401 | } | |
11402 | ||
11403 | /* Adjust the argument types in NODE to their appropriate vector | |
11404 | counterparts. */ | |
11405 | ||
11406 | static void | |
11407 | simd_clone_adjust (struct cgraph_node *node) | |
11408 | { | |
11409 | push_cfun (DECL_STRUCT_FUNCTION (node->decl)); | |
11410 | ||
11411 | targetm.simd_clone.adjust (node); | |
11412 | ||
11413 | tree retval = simd_clone_adjust_return_type (node); | |
11414 | ipa_parm_adjustment_vec adjustments | |
11415 | = simd_clone_adjust_argument_types (node); | |
11416 | ||
11417 | push_gimplify_context (); | |
11418 | ||
11419 | gimple_seq seq = simd_clone_init_simd_arrays (node, adjustments); | |
11420 | ||
11421 | /* Adjust all uses of vector arguments accordingly. Adjust all | |
11422 | return values accordingly. */ | |
11423 | tree iter = create_tmp_var (unsigned_type_node, "iter"); | |
11424 | tree iter1 = make_ssa_name (iter, NULL); | |
11425 | tree iter2 = make_ssa_name (iter, NULL); | |
11426 | ipa_simd_modify_function_body (node, adjustments, retval, iter1); | |
11427 | ||
11428 | /* Initialize the iteration variable. */ | |
11429 | basic_block entry_bb = single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun)); | |
11430 | basic_block body_bb = split_block_after_labels (entry_bb)->dest; | |
11431 | gimple_stmt_iterator gsi = gsi_after_labels (entry_bb); | |
11432 | /* Insert the SIMD array and iv initialization at function | |
11433 | entry. */ | |
11434 | gsi_insert_seq_before (&gsi, seq, GSI_NEW_STMT); | |
11435 | ||
11436 | pop_gimplify_context (NULL); | |
11437 | ||
11438 | /* Create a new BB right before the original exit BB, to hold the | |
11439 | iteration increment and the condition/branch. */ | |
11440 | basic_block orig_exit = EDGE_PRED (EXIT_BLOCK_PTR_FOR_FN (cfun), 0)->src; | |
11441 | basic_block incr_bb = create_empty_bb (orig_exit); | |
11442 | /* The succ of orig_exit was EXIT_BLOCK_PTR_FOR_FN (cfun), with an empty | |
11443 | flag. Set it now to be a FALLTHRU_EDGE. */ | |
11444 | gcc_assert (EDGE_COUNT (orig_exit->succs) == 1); | |
11445 | EDGE_SUCC (orig_exit, 0)->flags |= EDGE_FALLTHRU; | |
11446 | for (unsigned i = 0; | |
11447 | i < EDGE_COUNT (EXIT_BLOCK_PTR_FOR_FN (cfun)->preds); ++i) | |
11448 | { | |
11449 | edge e = EDGE_PRED (EXIT_BLOCK_PTR_FOR_FN (cfun), i); | |
11450 | redirect_edge_succ (e, incr_bb); | |
11451 | } | |
11452 | edge e = make_edge (incr_bb, EXIT_BLOCK_PTR_FOR_FN (cfun), 0); | |
11453 | e->probability = REG_BR_PROB_BASE; | |
11454 | gsi = gsi_last_bb (incr_bb); | |
11455 | gimple g = gimple_build_assign_with_ops (PLUS_EXPR, iter2, iter1, | |
11456 | build_int_cst (unsigned_type_node, | |
11457 | 1)); | |
11458 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
11459 | ||
11460 | /* Mostly annotate the loop for the vectorizer (the rest is done below). */ | |
11461 | struct loop *loop = alloc_loop (); | |
11462 | cfun->has_force_vect_loops = true; | |
11463 | loop->safelen = node->simdclone->simdlen; | |
11464 | loop->force_vect = true; | |
11465 | loop->header = body_bb; | |
11466 | add_bb_to_loop (incr_bb, loop); | |
11467 | ||
11468 | /* Branch around the body if the mask applies. */ | |
11469 | if (node->simdclone->inbranch) | |
11470 | { | |
11471 | gimple_stmt_iterator gsi = gsi_last_bb (loop->header); | |
11472 | tree mask_array | |
11473 | = node->simdclone->args[node->simdclone->nargs - 1].simd_array; | |
11474 | tree mask = make_ssa_name (TREE_TYPE (TREE_TYPE (mask_array)), NULL); | |
11475 | tree aref = build4 (ARRAY_REF, | |
11476 | TREE_TYPE (TREE_TYPE (mask_array)), | |
11477 | mask_array, iter1, | |
11478 | NULL, NULL); | |
11479 | g = gimple_build_assign (mask, aref); | |
11480 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
11481 | int bitsize = GET_MODE_BITSIZE (TYPE_MODE (TREE_TYPE (aref))); | |
11482 | if (!INTEGRAL_TYPE_P (TREE_TYPE (aref))) | |
11483 | { | |
11484 | aref = build1 (VIEW_CONVERT_EXPR, | |
11485 | build_nonstandard_integer_type (bitsize, 0), mask); | |
11486 | mask = make_ssa_name (TREE_TYPE (aref), NULL); | |
11487 | g = gimple_build_assign (mask, aref); | |
11488 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
11489 | } | |
11490 | ||
11491 | g = gimple_build_cond (EQ_EXPR, mask, build_zero_cst (TREE_TYPE (mask)), | |
11492 | NULL, NULL); | |
11493 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
11494 | make_edge (loop->header, incr_bb, EDGE_TRUE_VALUE); | |
11495 | FALLTHRU_EDGE (loop->header)->flags = EDGE_FALSE_VALUE; | |
11496 | } | |
11497 | ||
11498 | /* Generate the condition. */ | |
11499 | g = gimple_build_cond (LT_EXPR, | |
11500 | iter2, | |
11501 | build_int_cst (unsigned_type_node, | |
11502 | node->simdclone->simdlen), | |
11503 | NULL, NULL); | |
11504 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
11505 | e = split_block (incr_bb, gsi_stmt (gsi)); | |
11506 | basic_block latch_bb = e->dest; | |
11507 | basic_block new_exit_bb = e->dest; | |
11508 | new_exit_bb = split_block (latch_bb, NULL)->dest; | |
11509 | loop->latch = latch_bb; | |
11510 | ||
11511 | redirect_edge_succ (FALLTHRU_EDGE (latch_bb), body_bb); | |
11512 | ||
11513 | make_edge (incr_bb, new_exit_bb, EDGE_FALSE_VALUE); | |
11514 | /* The successor of incr_bb is already pointing to latch_bb; just | |
11515 | change the flags. | |
11516 | make_edge (incr_bb, latch_bb, EDGE_TRUE_VALUE); */ | |
11517 | FALLTHRU_EDGE (incr_bb)->flags = EDGE_TRUE_VALUE; | |
11518 | ||
11519 | gimple phi = create_phi_node (iter1, body_bb); | |
11520 | edge preheader_edge = find_edge (entry_bb, body_bb); | |
11521 | edge latch_edge = single_succ_edge (latch_bb); | |
11522 | add_phi_arg (phi, build_zero_cst (unsigned_type_node), preheader_edge, | |
11523 | UNKNOWN_LOCATION); | |
11524 | add_phi_arg (phi, iter2, latch_edge, UNKNOWN_LOCATION); | |
11525 | ||
11526 | /* Generate the new return. */ | |
11527 | gsi = gsi_last_bb (new_exit_bb); | |
11528 | if (retval | |
11529 | && TREE_CODE (retval) == VIEW_CONVERT_EXPR | |
11530 | && TREE_CODE (TREE_OPERAND (retval, 0)) == RESULT_DECL) | |
11531 | retval = TREE_OPERAND (retval, 0); | |
11532 | else if (retval) | |
11533 | { | |
11534 | retval = build1 (VIEW_CONVERT_EXPR, | |
11535 | TREE_TYPE (TREE_TYPE (node->decl)), | |
11536 | retval); | |
11537 | retval = force_gimple_operand_gsi (&gsi, retval, true, NULL, | |
11538 | false, GSI_CONTINUE_LINKING); | |
11539 | } | |
11540 | g = gimple_build_return (retval); | |
11541 | gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); | |
11542 | ||
11543 | /* Handle aligned clauses by replacing default defs of the aligned | |
11544 | uniform args with __builtin_assume_aligned (arg_N(D), alignment) | |
11545 | lhs. Handle linear by adding PHIs. */ | |
11546 | for (unsigned i = 0; i < node->simdclone->nargs; i++) | |
11547 | if (node->simdclone->args[i].alignment | |
11548 | && node->simdclone->args[i].arg_type == SIMD_CLONE_ARG_TYPE_UNIFORM | |
11549 | && (node->simdclone->args[i].alignment | |
11550 | & (node->simdclone->args[i].alignment - 1)) == 0 | |
11551 | && TREE_CODE (TREE_TYPE (node->simdclone->args[i].orig_arg)) | |
11552 | == POINTER_TYPE) | |
11553 | { | |
11554 | unsigned int alignment = node->simdclone->args[i].alignment; | |
11555 | tree orig_arg = node->simdclone->args[i].orig_arg; | |
11556 | tree def = ssa_default_def (cfun, orig_arg); | |
6db33a3d | 11557 | if (def && !has_zero_uses (def)) |
d09768a4 | 11558 | { |
11559 | tree fn = builtin_decl_explicit (BUILT_IN_ASSUME_ALIGNED); | |
11560 | gimple_seq seq = NULL; | |
11561 | bool need_cvt = false; | |
11562 | gimple call | |
11563 | = gimple_build_call (fn, 2, def, size_int (alignment)); | |
11564 | g = call; | |
11565 | if (!useless_type_conversion_p (TREE_TYPE (orig_arg), | |
11566 | ptr_type_node)) | |
11567 | need_cvt = true; | |
11568 | tree t = make_ssa_name (need_cvt ? ptr_type_node : orig_arg, NULL); | |
11569 | gimple_call_set_lhs (g, t); | |
11570 | gimple_seq_add_stmt_without_update (&seq, g); | |
11571 | if (need_cvt) | |
11572 | { | |
11573 | t = make_ssa_name (orig_arg, NULL); | |
11574 | g = gimple_build_assign_with_ops (NOP_EXPR, t, | |
11575 | gimple_call_lhs (g), | |
11576 | NULL_TREE); | |
11577 | gimple_seq_add_stmt_without_update (&seq, g); | |
11578 | } | |
11579 | gsi_insert_seq_on_edge_immediate | |
11580 | (single_succ_edge (ENTRY_BLOCK_PTR_FOR_FN (cfun)), seq); | |
11581 | ||
11582 | entry_bb = single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun)); | |
11583 | int freq = compute_call_stmt_bb_frequency (current_function_decl, | |
11584 | entry_bb); | |
11585 | cgraph_create_edge (node, cgraph_get_create_node (fn), | |
11586 | call, entry_bb->count, freq); | |
11587 | ||
11588 | imm_use_iterator iter; | |
11589 | use_operand_p use_p; | |
11590 | gimple use_stmt; | |
11591 | tree repl = gimple_get_lhs (g); | |
11592 | FOR_EACH_IMM_USE_STMT (use_stmt, iter, def) | |
11593 | if (is_gimple_debug (use_stmt) || use_stmt == call) | |
11594 | continue; | |
11595 | else | |
11596 | FOR_EACH_IMM_USE_ON_STMT (use_p, iter) | |
11597 | SET_USE (use_p, repl); | |
11598 | } | |
11599 | } | |
11600 | else if (node->simdclone->args[i].arg_type | |
11601 | == SIMD_CLONE_ARG_TYPE_LINEAR_CONSTANT_STEP) | |
11602 | { | |
11603 | tree orig_arg = node->simdclone->args[i].orig_arg; | |
11604 | tree def = ssa_default_def (cfun, orig_arg); | |
11605 | gcc_assert (INTEGRAL_TYPE_P (TREE_TYPE (orig_arg)) | |
11606 | || POINTER_TYPE_P (TREE_TYPE (orig_arg))); | |
6db33a3d | 11607 | if (def && !has_zero_uses (def)) |
d09768a4 | 11608 | { |
11609 | iter1 = make_ssa_name (orig_arg, NULL); | |
11610 | iter2 = make_ssa_name (orig_arg, NULL); | |
11611 | phi = create_phi_node (iter1, body_bb); | |
11612 | add_phi_arg (phi, def, preheader_edge, UNKNOWN_LOCATION); | |
11613 | add_phi_arg (phi, iter2, latch_edge, UNKNOWN_LOCATION); | |
11614 | enum tree_code code = INTEGRAL_TYPE_P (TREE_TYPE (orig_arg)) | |
11615 | ? PLUS_EXPR : POINTER_PLUS_EXPR; | |
11616 | tree addtype = INTEGRAL_TYPE_P (TREE_TYPE (orig_arg)) | |
11617 | ? TREE_TYPE (orig_arg) : sizetype; | |
11618 | tree addcst | |
11619 | = build_int_cst (addtype, node->simdclone->args[i].linear_step); | |
11620 | g = gimple_build_assign_with_ops (code, iter2, iter1, addcst); | |
11621 | gsi = gsi_last_bb (incr_bb); | |
11622 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
11623 | ||
11624 | imm_use_iterator iter; | |
11625 | use_operand_p use_p; | |
11626 | gimple use_stmt; | |
11627 | FOR_EACH_IMM_USE_STMT (use_stmt, iter, def) | |
11628 | if (use_stmt == phi) | |
11629 | continue; | |
11630 | else | |
11631 | FOR_EACH_IMM_USE_ON_STMT (use_p, iter) | |
11632 | SET_USE (use_p, iter1); | |
11633 | } | |
11634 | } | |
11635 | ||
11636 | calculate_dominance_info (CDI_DOMINATORS); | |
11637 | add_loop (loop, loop->header->loop_father); | |
11638 | update_ssa (TODO_update_ssa); | |
11639 | ||
11640 | pop_cfun (); | |
11641 | } | |
11642 | ||
11643 | /* If the function in NODE is tagged as an elemental SIMD function, | |
11644 | create the appropriate SIMD clones. */ | |
11645 | ||
11646 | static void | |
11647 | expand_simd_clones (struct cgraph_node *node) | |
11648 | { | |
d09768a4 | 11649 | tree attr = lookup_attribute ("omp declare simd", |
11650 | DECL_ATTRIBUTES (node->decl)); | |
ea0695f9 | 11651 | if (attr == NULL_TREE |
11652 | || node->global.inlined_to | |
11653 | || lookup_attribute ("noclone", DECL_ATTRIBUTES (node->decl))) | |
d09768a4 | 11654 | return; |
ea0695f9 | 11655 | |
d09768a4 | 11656 | /* Ignore |
11657 | #pragma omp declare simd | |
11658 | extern int foo (); | |
11659 | in C, there we don't know the argument types at all. */ | |
11660 | if (!node->definition | |
11661 | && TYPE_ARG_TYPES (TREE_TYPE (node->decl)) == NULL_TREE) | |
11662 | return; | |
11663 | ||
11664 | do | |
11665 | { | |
11666 | /* Start with parsing the "omp declare simd" attribute(s). */ | |
11667 | bool inbranch_clause_specified; | |
11668 | struct cgraph_simd_clone *clone_info | |
11669 | = simd_clone_clauses_extract (node, TREE_VALUE (attr), | |
11670 | &inbranch_clause_specified); | |
11671 | if (clone_info == NULL) | |
11672 | continue; | |
11673 | ||
11674 | int orig_simdlen = clone_info->simdlen; | |
11675 | tree base_type = simd_clone_compute_base_data_type (node, clone_info); | |
11676 | /* The target can return 0 (no simd clones should be created), | |
11677 | 1 (just one ISA of simd clones should be created) or higher | |
11678 | count of ISA variants. In that case, clone_info is initialized | |
11679 | for the first ISA variant. */ | |
11680 | int count | |
11681 | = targetm.simd_clone.compute_vecsize_and_simdlen (node, clone_info, | |
11682 | base_type, 0); | |
11683 | if (count == 0) | |
11684 | continue; | |
11685 | ||
11686 | /* Loop over all COUNT ISA variants, and if !INBRANCH_CLAUSE_SPECIFIED, | |
11687 | also create one inbranch and one !inbranch clone of it. */ | |
11688 | for (int i = 0; i < count * 2; i++) | |
11689 | { | |
11690 | struct cgraph_simd_clone *clone = clone_info; | |
11691 | if (inbranch_clause_specified && (i & 1) != 0) | |
11692 | continue; | |
11693 | ||
11694 | if (i != 0) | |
11695 | { | |
11696 | clone = simd_clone_struct_alloc (clone_info->nargs | |
d09768a4 | 11697 | + ((i & 1) != 0)); |
11698 | simd_clone_struct_copy (clone, clone_info); | |
11699 | /* Undo changes targetm.simd_clone.compute_vecsize_and_simdlen | |
11700 | and simd_clone_adjust_argument_types did to the first | |
11701 | clone's info. */ | |
11702 | clone->nargs -= clone_info->inbranch; | |
11703 | clone->simdlen = orig_simdlen; | |
11704 | /* And call the target hook again to get the right ISA. */ | |
11705 | targetm.simd_clone.compute_vecsize_and_simdlen (node, clone, | |
11706 | base_type, | |
11707 | i / 2); | |
11708 | if ((i & 1) != 0) | |
11709 | clone->inbranch = 1; | |
11710 | } | |
11711 | ||
11712 | /* simd_clone_mangle might fail if such a clone has been created | |
11713 | already. */ | |
11714 | tree id = simd_clone_mangle (node, clone); | |
11715 | if (id == NULL_TREE) | |
11716 | continue; | |
11717 | ||
11718 | /* Only when we are sure we want to create the clone actually | |
11719 | clone the function (or definitions) or create another | |
11720 | extern FUNCTION_DECL (for prototypes without definitions). */ | |
11721 | struct cgraph_node *n = simd_clone_create (node); | |
11722 | if (n == NULL) | |
11723 | continue; | |
11724 | ||
11725 | n->simdclone = clone; | |
11726 | clone->origin = node; | |
11727 | clone->next_clone = NULL; | |
11728 | if (node->simd_clones == NULL) | |
11729 | { | |
11730 | clone->prev_clone = n; | |
11731 | node->simd_clones = n; | |
11732 | } | |
11733 | else | |
11734 | { | |
11735 | clone->prev_clone = node->simd_clones->simdclone->prev_clone; | |
11736 | clone->prev_clone->simdclone->next_clone = n; | |
11737 | node->simd_clones->simdclone->prev_clone = n; | |
11738 | } | |
11739 | change_decl_assembler_name (n->decl, id); | |
11740 | /* And finally adjust the return type, parameters and for | |
11741 | definitions also function body. */ | |
11742 | if (node->definition) | |
11743 | simd_clone_adjust (n); | |
11744 | else | |
11745 | { | |
11746 | simd_clone_adjust_return_type (n); | |
11747 | simd_clone_adjust_argument_types (n); | |
11748 | } | |
11749 | } | |
11750 | } | |
11751 | while ((attr = lookup_attribute ("omp declare simd", TREE_CHAIN (attr)))); | |
11752 | } | |
11753 | ||
11754 | /* Entry point for IPA simd clone creation pass. */ | |
11755 | ||
11756 | static unsigned int | |
11757 | ipa_omp_simd_clone (void) | |
11758 | { | |
11759 | struct cgraph_node *node; | |
11760 | FOR_EACH_FUNCTION (node) | |
11761 | expand_simd_clones (node); | |
11762 | return 0; | |
11763 | } | |
11764 | ||
11765 | namespace { | |
11766 | ||
11767 | const pass_data pass_data_omp_simd_clone = | |
11768 | { | |
11769 | SIMPLE_IPA_PASS, /* type */ | |
11770 | "simdclone", /* name */ | |
11771 | OPTGROUP_NONE, /* optinfo_flags */ | |
11772 | true, /* has_gate */ | |
11773 | true, /* has_execute */ | |
11774 | TV_NONE, /* tv_id */ | |
11775 | ( PROP_ssa | PROP_cfg ), /* properties_required */ | |
11776 | 0, /* properties_provided */ | |
11777 | 0, /* properties_destroyed */ | |
11778 | 0, /* todo_flags_start */ | |
11779 | 0, /* todo_flags_finish */ | |
11780 | }; | |
11781 | ||
11782 | class pass_omp_simd_clone : public simple_ipa_opt_pass | |
11783 | { | |
11784 | public: | |
11785 | pass_omp_simd_clone(gcc::context *ctxt) | |
11786 | : simple_ipa_opt_pass(pass_data_omp_simd_clone, ctxt) | |
11787 | {} | |
11788 | ||
11789 | /* opt_pass methods: */ | |
ea0695f9 | 11790 | bool gate () { return ((flag_openmp || flag_openmp_simd |
a89e6c15 | 11791 | || flag_cilkplus || (in_lto_p && !flag_wpa)) |
ea0695f9 | 11792 | && (targetm.simd_clone.compute_vecsize_and_simdlen |
11793 | != NULL)); } | |
d09768a4 | 11794 | unsigned int execute () { return ipa_omp_simd_clone (); } |
11795 | }; | |
11796 | ||
11797 | } // anon namespace | |
11798 | ||
11799 | simple_ipa_opt_pass * | |
11800 | make_pass_omp_simd_clone (gcc::context *ctxt) | |
11801 | { | |
11802 | return new pass_omp_simd_clone (ctxt); | |
11803 | } | |
cbe8bda8 | 11804 | |
1e8e9920 | 11805 | #include "gt-omp-low.h" |