]>
Commit | Line | Data |
---|---|---|
629b3d75 MJ |
1 | /* Expansion pass for OMP directives. Outlines regions of certain OMP |
2 | directives to separate functions, converts others into explicit calls to the | |
3 | runtime library (libgomp) and so forth | |
4 | ||
8d9254fc | 5 | Copyright (C) 2005-2020 Free Software Foundation, Inc. |
629b3d75 MJ |
6 | |
7 | This file is part of GCC. | |
8 | ||
9 | GCC is free software; you can redistribute it and/or modify it under | |
10 | the terms of the GNU General Public License as published by the Free | |
11 | Software Foundation; either version 3, or (at your option) any later | |
12 | version. | |
13 | ||
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GCC; see the file COPYING3. If not see | |
21 | <http://www.gnu.org/licenses/>. */ | |
22 | ||
23 | #include "config.h" | |
24 | #include "system.h" | |
25 | #include "coretypes.h" | |
26 | #include "memmodel.h" | |
27 | #include "backend.h" | |
28 | #include "target.h" | |
29 | #include "rtl.h" | |
30 | #include "tree.h" | |
31 | #include "gimple.h" | |
32 | #include "cfghooks.h" | |
33 | #include "tree-pass.h" | |
34 | #include "ssa.h" | |
35 | #include "optabs.h" | |
36 | #include "cgraph.h" | |
37 | #include "pretty-print.h" | |
38 | #include "diagnostic-core.h" | |
39 | #include "fold-const.h" | |
40 | #include "stor-layout.h" | |
41 | #include "cfganal.h" | |
42 | #include "internal-fn.h" | |
43 | #include "gimplify.h" | |
44 | #include "gimple-iterator.h" | |
45 | #include "gimplify-me.h" | |
46 | #include "gimple-walk.h" | |
47 | #include "tree-cfg.h" | |
48 | #include "tree-into-ssa.h" | |
49 | #include "tree-ssa.h" | |
50 | #include "splay-tree.h" | |
51 | #include "cfgloop.h" | |
52 | #include "omp-general.h" | |
53 | #include "omp-offload.h" | |
54 | #include "tree-cfgcleanup.h" | |
a895e6d7 | 55 | #include "alloc-pool.h" |
629b3d75 | 56 | #include "symbol-summary.h" |
629b3d75 MJ |
57 | #include "gomp-constants.h" |
58 | #include "gimple-pretty-print.h" | |
13293add | 59 | #include "hsa-common.h" |
314e6352 ML |
60 | #include "stringpool.h" |
61 | #include "attribs.h" | |
629b3d75 MJ |
62 | |
63 | /* OMP region information. Every parallel and workshare | |
64 | directive is enclosed between two markers, the OMP_* directive | |
65 | and a corresponding GIMPLE_OMP_RETURN statement. */ | |
66 | ||
67 | struct omp_region | |
68 | { | |
69 | /* The enclosing region. */ | |
70 | struct omp_region *outer; | |
71 | ||
72 | /* First child region. */ | |
73 | struct omp_region *inner; | |
74 | ||
75 | /* Next peer region. */ | |
76 | struct omp_region *next; | |
77 | ||
78 | /* Block containing the omp directive as its last stmt. */ | |
79 | basic_block entry; | |
80 | ||
81 | /* Block containing the GIMPLE_OMP_RETURN as its last stmt. */ | |
82 | basic_block exit; | |
83 | ||
84 | /* Block containing the GIMPLE_OMP_CONTINUE as its last stmt. */ | |
85 | basic_block cont; | |
86 | ||
87 | /* If this is a combined parallel+workshare region, this is a list | |
88 | of additional arguments needed by the combined parallel+workshare | |
89 | library call. */ | |
90 | vec<tree, va_gc> *ws_args; | |
91 | ||
92 | /* The code for the omp directive of this region. */ | |
93 | enum gimple_code type; | |
94 | ||
95 | /* Schedule kind, only used for GIMPLE_OMP_FOR type regions. */ | |
96 | enum omp_clause_schedule_kind sched_kind; | |
97 | ||
98 | /* Schedule modifiers. */ | |
99 | unsigned char sched_modifiers; | |
100 | ||
101 | /* True if this is a combined parallel+workshare region. */ | |
102 | bool is_combined_parallel; | |
103 | ||
0b887b75 JJ |
104 | /* Copy of fd.lastprivate_conditional != 0. */ |
105 | bool has_lastprivate_conditional; | |
106 | ||
629b3d75 MJ |
107 | /* The ordered stmt if type is GIMPLE_OMP_ORDERED and it has |
108 | a depend clause. */ | |
109 | gomp_ordered *ord_stmt; | |
110 | }; | |
111 | ||
112 | static struct omp_region *root_omp_region; | |
113 | static bool omp_any_child_fn_dumped; | |
114 | ||
115 | static void expand_omp_build_assign (gimple_stmt_iterator *, tree, tree, | |
116 | bool = false); | |
117 | static gphi *find_phi_with_arg_on_edge (tree, edge); | |
118 | static void expand_omp (struct omp_region *region); | |
119 | ||
120 | /* Return true if REGION is a combined parallel+workshare region. */ | |
121 | ||
122 | static inline bool | |
123 | is_combined_parallel (struct omp_region *region) | |
124 | { | |
125 | return region->is_combined_parallel; | |
126 | } | |
127 | ||
128 | /* Given two blocks PAR_ENTRY_BB and WS_ENTRY_BB such that WS_ENTRY_BB | |
129 | is the immediate dominator of PAR_ENTRY_BB, return true if there | |
130 | are no data dependencies that would prevent expanding the parallel | |
131 | directive at PAR_ENTRY_BB as a combined parallel+workshare region. | |
132 | ||
133 | When expanding a combined parallel+workshare region, the call to | |
134 | the child function may need additional arguments in the case of | |
135 | GIMPLE_OMP_FOR regions. In some cases, these arguments are | |
136 | computed out of variables passed in from the parent to the child | |
137 | via 'struct .omp_data_s'. For instance: | |
138 | ||
139 | #pragma omp parallel for schedule (guided, i * 4) | |
140 | for (j ...) | |
141 | ||
142 | Is lowered into: | |
143 | ||
01914336 | 144 | # BLOCK 2 (PAR_ENTRY_BB) |
629b3d75 MJ |
145 | .omp_data_o.i = i; |
146 | #pragma omp parallel [child fn: bar.omp_fn.0 ( ..., D.1598) | |
147 | ||
148 | # BLOCK 3 (WS_ENTRY_BB) | |
149 | .omp_data_i = &.omp_data_o; | |
150 | D.1667 = .omp_data_i->i; | |
151 | D.1598 = D.1667 * 4; | |
152 | #pragma omp for schedule (guided, D.1598) | |
153 | ||
154 | When we outline the parallel region, the call to the child function | |
155 | 'bar.omp_fn.0' will need the value D.1598 in its argument list, but | |
156 | that value is computed *after* the call site. So, in principle we | |
157 | cannot do the transformation. | |
158 | ||
159 | To see whether the code in WS_ENTRY_BB blocks the combined | |
160 | parallel+workshare call, we collect all the variables used in the | |
161 | GIMPLE_OMP_FOR header check whether they appear on the LHS of any | |
162 | statement in WS_ENTRY_BB. If so, then we cannot emit the combined | |
163 | call. | |
164 | ||
165 | FIXME. If we had the SSA form built at this point, we could merely | |
166 | hoist the code in block 3 into block 2 and be done with it. But at | |
167 | this point we don't have dataflow information and though we could | |
168 | hack something up here, it is really not worth the aggravation. */ | |
169 | ||
170 | static bool | |
171 | workshare_safe_to_combine_p (basic_block ws_entry_bb) | |
172 | { | |
173 | struct omp_for_data fd; | |
174 | gimple *ws_stmt = last_stmt (ws_entry_bb); | |
175 | ||
176 | if (gimple_code (ws_stmt) == GIMPLE_OMP_SECTIONS) | |
177 | return true; | |
178 | ||
179 | gcc_assert (gimple_code (ws_stmt) == GIMPLE_OMP_FOR); | |
28567c40 JJ |
180 | if (gimple_omp_for_kind (ws_stmt) != GF_OMP_FOR_KIND_FOR) |
181 | return false; | |
629b3d75 MJ |
182 | |
183 | omp_extract_for_data (as_a <gomp_for *> (ws_stmt), &fd, NULL); | |
184 | ||
185 | if (fd.collapse > 1 && TREE_CODE (fd.loop.n2) != INTEGER_CST) | |
186 | return false; | |
187 | if (fd.iter_type != long_integer_type_node) | |
188 | return false; | |
189 | ||
190 | /* FIXME. We give up too easily here. If any of these arguments | |
191 | are not constants, they will likely involve variables that have | |
192 | been mapped into fields of .omp_data_s for sharing with the child | |
193 | function. With appropriate data flow, it would be possible to | |
194 | see through this. */ | |
195 | if (!is_gimple_min_invariant (fd.loop.n1) | |
196 | || !is_gimple_min_invariant (fd.loop.n2) | |
197 | || !is_gimple_min_invariant (fd.loop.step) | |
198 | || (fd.chunk_size && !is_gimple_min_invariant (fd.chunk_size))) | |
199 | return false; | |
200 | ||
201 | return true; | |
202 | } | |
203 | ||
204 | /* Adjust CHUNK_SIZE from SCHEDULE clause, depending on simd modifier | |
205 | presence (SIMD_SCHEDULE). */ | |
206 | ||
207 | static tree | |
208 | omp_adjust_chunk_size (tree chunk_size, bool simd_schedule) | |
209 | { | |
28567c40 | 210 | if (!simd_schedule || integer_zerop (chunk_size)) |
629b3d75 MJ |
211 | return chunk_size; |
212 | ||
9d2f08ab RS |
213 | poly_uint64 vf = omp_max_vf (); |
214 | if (known_eq (vf, 1U)) | |
629b3d75 MJ |
215 | return chunk_size; |
216 | ||
217 | tree type = TREE_TYPE (chunk_size); | |
218 | chunk_size = fold_build2 (PLUS_EXPR, type, chunk_size, | |
219 | build_int_cst (type, vf - 1)); | |
220 | return fold_build2 (BIT_AND_EXPR, type, chunk_size, | |
221 | build_int_cst (type, -vf)); | |
222 | } | |
223 | ||
224 | /* Collect additional arguments needed to emit a combined | |
225 | parallel+workshare call. WS_STMT is the workshare directive being | |
226 | expanded. */ | |
227 | ||
228 | static vec<tree, va_gc> * | |
229 | get_ws_args_for (gimple *par_stmt, gimple *ws_stmt) | |
230 | { | |
231 | tree t; | |
232 | location_t loc = gimple_location (ws_stmt); | |
233 | vec<tree, va_gc> *ws_args; | |
234 | ||
235 | if (gomp_for *for_stmt = dyn_cast <gomp_for *> (ws_stmt)) | |
236 | { | |
237 | struct omp_for_data fd; | |
238 | tree n1, n2; | |
239 | ||
240 | omp_extract_for_data (for_stmt, &fd, NULL); | |
241 | n1 = fd.loop.n1; | |
242 | n2 = fd.loop.n2; | |
243 | ||
244 | if (gimple_omp_for_combined_into_p (for_stmt)) | |
245 | { | |
246 | tree innerc | |
247 | = omp_find_clause (gimple_omp_parallel_clauses (par_stmt), | |
248 | OMP_CLAUSE__LOOPTEMP_); | |
249 | gcc_assert (innerc); | |
250 | n1 = OMP_CLAUSE_DECL (innerc); | |
251 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
252 | OMP_CLAUSE__LOOPTEMP_); | |
253 | gcc_assert (innerc); | |
254 | n2 = OMP_CLAUSE_DECL (innerc); | |
255 | } | |
256 | ||
257 | vec_alloc (ws_args, 3 + (fd.chunk_size != 0)); | |
258 | ||
259 | t = fold_convert_loc (loc, long_integer_type_node, n1); | |
260 | ws_args->quick_push (t); | |
261 | ||
262 | t = fold_convert_loc (loc, long_integer_type_node, n2); | |
263 | ws_args->quick_push (t); | |
264 | ||
265 | t = fold_convert_loc (loc, long_integer_type_node, fd.loop.step); | |
266 | ws_args->quick_push (t); | |
267 | ||
268 | if (fd.chunk_size) | |
269 | { | |
270 | t = fold_convert_loc (loc, long_integer_type_node, fd.chunk_size); | |
271 | t = omp_adjust_chunk_size (t, fd.simd_schedule); | |
272 | ws_args->quick_push (t); | |
273 | } | |
274 | ||
275 | return ws_args; | |
276 | } | |
277 | else if (gimple_code (ws_stmt) == GIMPLE_OMP_SECTIONS) | |
278 | { | |
279 | /* Number of sections is equal to the number of edges from the | |
280 | GIMPLE_OMP_SECTIONS_SWITCH statement, except for the one to | |
281 | the exit of the sections region. */ | |
282 | basic_block bb = single_succ (gimple_bb (ws_stmt)); | |
283 | t = build_int_cst (unsigned_type_node, EDGE_COUNT (bb->succs) - 1); | |
284 | vec_alloc (ws_args, 1); | |
285 | ws_args->quick_push (t); | |
286 | return ws_args; | |
287 | } | |
288 | ||
289 | gcc_unreachable (); | |
290 | } | |
291 | ||
292 | /* Discover whether REGION is a combined parallel+workshare region. */ | |
293 | ||
294 | static void | |
295 | determine_parallel_type (struct omp_region *region) | |
296 | { | |
297 | basic_block par_entry_bb, par_exit_bb; | |
298 | basic_block ws_entry_bb, ws_exit_bb; | |
299 | ||
300 | if (region == NULL || region->inner == NULL | |
301 | || region->exit == NULL || region->inner->exit == NULL | |
302 | || region->inner->cont == NULL) | |
303 | return; | |
304 | ||
305 | /* We only support parallel+for and parallel+sections. */ | |
306 | if (region->type != GIMPLE_OMP_PARALLEL | |
307 | || (region->inner->type != GIMPLE_OMP_FOR | |
308 | && region->inner->type != GIMPLE_OMP_SECTIONS)) | |
309 | return; | |
310 | ||
311 | /* Check for perfect nesting PAR_ENTRY_BB -> WS_ENTRY_BB and | |
312 | WS_EXIT_BB -> PAR_EXIT_BB. */ | |
313 | par_entry_bb = region->entry; | |
314 | par_exit_bb = region->exit; | |
315 | ws_entry_bb = region->inner->entry; | |
316 | ws_exit_bb = region->inner->exit; | |
317 | ||
28567c40 JJ |
318 | /* Give up for task reductions on the parallel, while it is implementable, |
319 | adding another big set of APIs or slowing down the normal paths is | |
320 | not acceptable. */ | |
321 | tree pclauses = gimple_omp_parallel_clauses (last_stmt (par_entry_bb)); | |
322 | if (omp_find_clause (pclauses, OMP_CLAUSE__REDUCTEMP_)) | |
323 | return; | |
324 | ||
629b3d75 MJ |
325 | if (single_succ (par_entry_bb) == ws_entry_bb |
326 | && single_succ (ws_exit_bb) == par_exit_bb | |
327 | && workshare_safe_to_combine_p (ws_entry_bb) | |
328 | && (gimple_omp_parallel_combined_p (last_stmt (par_entry_bb)) | |
329 | || (last_and_only_stmt (ws_entry_bb) | |
330 | && last_and_only_stmt (par_exit_bb)))) | |
331 | { | |
332 | gimple *par_stmt = last_stmt (par_entry_bb); | |
333 | gimple *ws_stmt = last_stmt (ws_entry_bb); | |
334 | ||
335 | if (region->inner->type == GIMPLE_OMP_FOR) | |
336 | { | |
337 | /* If this is a combined parallel loop, we need to determine | |
338 | whether or not to use the combined library calls. There | |
339 | are two cases where we do not apply the transformation: | |
340 | static loops and any kind of ordered loop. In the first | |
341 | case, we already open code the loop so there is no need | |
342 | to do anything else. In the latter case, the combined | |
343 | parallel loop call would still need extra synchronization | |
344 | to implement ordered semantics, so there would not be any | |
345 | gain in using the combined call. */ | |
346 | tree clauses = gimple_omp_for_clauses (ws_stmt); | |
347 | tree c = omp_find_clause (clauses, OMP_CLAUSE_SCHEDULE); | |
348 | if (c == NULL | |
349 | || ((OMP_CLAUSE_SCHEDULE_KIND (c) & OMP_CLAUSE_SCHEDULE_MASK) | |
350 | == OMP_CLAUSE_SCHEDULE_STATIC) | |
28567c40 | 351 | || omp_find_clause (clauses, OMP_CLAUSE_ORDERED) |
6c7ae8c5 | 352 | || omp_find_clause (clauses, OMP_CLAUSE__REDUCTEMP_) |
8221c30b JJ |
353 | || ((c = omp_find_clause (clauses, OMP_CLAUSE__CONDTEMP_)) |
354 | && POINTER_TYPE_P (TREE_TYPE (OMP_CLAUSE_DECL (c))))) | |
28567c40 | 355 | return; |
629b3d75 | 356 | } |
28567c40 | 357 | else if (region->inner->type == GIMPLE_OMP_SECTIONS |
8221c30b JJ |
358 | && (omp_find_clause (gimple_omp_sections_clauses (ws_stmt), |
359 | OMP_CLAUSE__REDUCTEMP_) | |
360 | || omp_find_clause (gimple_omp_sections_clauses (ws_stmt), | |
361 | OMP_CLAUSE__CONDTEMP_))) | |
28567c40 | 362 | return; |
629b3d75 MJ |
363 | |
364 | region->is_combined_parallel = true; | |
365 | region->inner->is_combined_parallel = true; | |
366 | region->ws_args = get_ws_args_for (par_stmt, ws_stmt); | |
367 | } | |
368 | } | |
369 | ||
370 | /* Debugging dumps for parallel regions. */ | |
371 | void dump_omp_region (FILE *, struct omp_region *, int); | |
372 | void debug_omp_region (struct omp_region *); | |
373 | void debug_all_omp_regions (void); | |
374 | ||
375 | /* Dump the parallel region tree rooted at REGION. */ | |
376 | ||
377 | void | |
378 | dump_omp_region (FILE *file, struct omp_region *region, int indent) | |
379 | { | |
380 | fprintf (file, "%*sbb %d: %s\n", indent, "", region->entry->index, | |
381 | gimple_code_name[region->type]); | |
382 | ||
383 | if (region->inner) | |
384 | dump_omp_region (file, region->inner, indent + 4); | |
385 | ||
386 | if (region->cont) | |
387 | { | |
388 | fprintf (file, "%*sbb %d: GIMPLE_OMP_CONTINUE\n", indent, "", | |
389 | region->cont->index); | |
390 | } | |
391 | ||
392 | if (region->exit) | |
393 | fprintf (file, "%*sbb %d: GIMPLE_OMP_RETURN\n", indent, "", | |
394 | region->exit->index); | |
395 | else | |
396 | fprintf (file, "%*s[no exit marker]\n", indent, ""); | |
397 | ||
398 | if (region->next) | |
399 | dump_omp_region (file, region->next, indent); | |
400 | } | |
401 | ||
402 | DEBUG_FUNCTION void | |
403 | debug_omp_region (struct omp_region *region) | |
404 | { | |
405 | dump_omp_region (stderr, region, 0); | |
406 | } | |
407 | ||
408 | DEBUG_FUNCTION void | |
409 | debug_all_omp_regions (void) | |
410 | { | |
411 | dump_omp_region (stderr, root_omp_region, 0); | |
412 | } | |
413 | ||
414 | /* Create a new parallel region starting at STMT inside region PARENT. */ | |
415 | ||
416 | static struct omp_region * | |
417 | new_omp_region (basic_block bb, enum gimple_code type, | |
418 | struct omp_region *parent) | |
419 | { | |
420 | struct omp_region *region = XCNEW (struct omp_region); | |
421 | ||
422 | region->outer = parent; | |
423 | region->entry = bb; | |
424 | region->type = type; | |
425 | ||
426 | if (parent) | |
427 | { | |
428 | /* This is a nested region. Add it to the list of inner | |
429 | regions in PARENT. */ | |
430 | region->next = parent->inner; | |
431 | parent->inner = region; | |
432 | } | |
433 | else | |
434 | { | |
435 | /* This is a toplevel region. Add it to the list of toplevel | |
436 | regions in ROOT_OMP_REGION. */ | |
437 | region->next = root_omp_region; | |
438 | root_omp_region = region; | |
439 | } | |
440 | ||
441 | return region; | |
442 | } | |
443 | ||
444 | /* Release the memory associated with the region tree rooted at REGION. */ | |
445 | ||
446 | static void | |
447 | free_omp_region_1 (struct omp_region *region) | |
448 | { | |
449 | struct omp_region *i, *n; | |
450 | ||
451 | for (i = region->inner; i ; i = n) | |
452 | { | |
453 | n = i->next; | |
454 | free_omp_region_1 (i); | |
455 | } | |
456 | ||
457 | free (region); | |
458 | } | |
459 | ||
460 | /* Release the memory for the entire omp region tree. */ | |
461 | ||
462 | void | |
463 | omp_free_regions (void) | |
464 | { | |
465 | struct omp_region *r, *n; | |
466 | for (r = root_omp_region; r ; r = n) | |
467 | { | |
468 | n = r->next; | |
469 | free_omp_region_1 (r); | |
470 | } | |
471 | root_omp_region = NULL; | |
472 | } | |
473 | ||
474 | /* A convenience function to build an empty GIMPLE_COND with just the | |
475 | condition. */ | |
476 | ||
477 | static gcond * | |
478 | gimple_build_cond_empty (tree cond) | |
479 | { | |
480 | enum tree_code pred_code; | |
481 | tree lhs, rhs; | |
482 | ||
483 | gimple_cond_get_ops_from_tree (cond, &pred_code, &lhs, &rhs); | |
484 | return gimple_build_cond (pred_code, lhs, rhs, NULL_TREE, NULL_TREE); | |
485 | } | |
486 | ||
487 | /* Return true if a parallel REGION is within a declare target function or | |
488 | within a target region and is not a part of a gridified target. */ | |
489 | ||
490 | static bool | |
491 | parallel_needs_hsa_kernel_p (struct omp_region *region) | |
492 | { | |
493 | bool indirect = false; | |
494 | for (region = region->outer; region; region = region->outer) | |
495 | { | |
496 | if (region->type == GIMPLE_OMP_PARALLEL) | |
497 | indirect = true; | |
498 | else if (region->type == GIMPLE_OMP_TARGET) | |
499 | { | |
500 | gomp_target *tgt_stmt | |
501 | = as_a <gomp_target *> (last_stmt (region->entry)); | |
502 | ||
503 | if (omp_find_clause (gimple_omp_target_clauses (tgt_stmt), | |
504 | OMP_CLAUSE__GRIDDIM_)) | |
505 | return indirect; | |
506 | else | |
507 | return true; | |
508 | } | |
509 | } | |
510 | ||
511 | if (lookup_attribute ("omp declare target", | |
512 | DECL_ATTRIBUTES (current_function_decl))) | |
513 | return true; | |
514 | ||
515 | return false; | |
516 | } | |
517 | ||
623c6df5 KB |
518 | /* Change DECL_CONTEXT of CHILD_FNDECL to that of the parent function. |
519 | Add CHILD_FNDECL to decl chain of the supercontext of the block | |
520 | ENTRY_BLOCK - this is the block which originally contained the | |
521 | code from which CHILD_FNDECL was created. | |
522 | ||
523 | Together, these actions ensure that the debug info for the outlined | |
524 | function will be emitted with the correct lexical scope. */ | |
525 | ||
526 | static void | |
4ccc4e30 JJ |
527 | adjust_context_and_scope (struct omp_region *region, tree entry_block, |
528 | tree child_fndecl) | |
623c6df5 | 529 | { |
4ccc4e30 JJ |
530 | tree parent_fndecl = NULL_TREE; |
531 | gimple *entry_stmt; | |
532 | /* OMP expansion expands inner regions before outer ones, so if | |
533 | we e.g. have explicit task region nested in parallel region, when | |
534 | expanding the task region current_function_decl will be the original | |
535 | source function, but we actually want to use as context the child | |
536 | function of the parallel. */ | |
537 | for (region = region->outer; | |
538 | region && parent_fndecl == NULL_TREE; region = region->outer) | |
539 | switch (region->type) | |
540 | { | |
541 | case GIMPLE_OMP_PARALLEL: | |
542 | case GIMPLE_OMP_TASK: | |
543 | case GIMPLE_OMP_TEAMS: | |
544 | entry_stmt = last_stmt (region->entry); | |
545 | parent_fndecl = gimple_omp_taskreg_child_fn (entry_stmt); | |
546 | break; | |
547 | case GIMPLE_OMP_TARGET: | |
548 | entry_stmt = last_stmt (region->entry); | |
549 | parent_fndecl | |
550 | = gimple_omp_target_child_fn (as_a <gomp_target *> (entry_stmt)); | |
551 | break; | |
552 | default: | |
553 | break; | |
554 | } | |
555 | ||
556 | if (parent_fndecl == NULL_TREE) | |
557 | parent_fndecl = current_function_decl; | |
558 | DECL_CONTEXT (child_fndecl) = parent_fndecl; | |
559 | ||
623c6df5 KB |
560 | if (entry_block != NULL_TREE && TREE_CODE (entry_block) == BLOCK) |
561 | { | |
562 | tree b = BLOCK_SUPERCONTEXT (entry_block); | |
623c6df5 KB |
563 | if (TREE_CODE (b) == BLOCK) |
564 | { | |
623c6df5 KB |
565 | DECL_CHAIN (child_fndecl) = BLOCK_VARS (b); |
566 | BLOCK_VARS (b) = child_fndecl; | |
567 | } | |
568 | } | |
569 | } | |
570 | ||
28567c40 | 571 | /* Build the function calls to GOMP_parallel etc to actually |
629b3d75 MJ |
572 | generate the parallel operation. REGION is the parallel region |
573 | being expanded. BB is the block where to insert the code. WS_ARGS | |
574 | will be set if this is a call to a combined parallel+workshare | |
575 | construct, it contains the list of additional arguments needed by | |
576 | the workshare construct. */ | |
577 | ||
578 | static void | |
579 | expand_parallel_call (struct omp_region *region, basic_block bb, | |
580 | gomp_parallel *entry_stmt, | |
581 | vec<tree, va_gc> *ws_args) | |
582 | { | |
583 | tree t, t1, t2, val, cond, c, clauses, flags; | |
584 | gimple_stmt_iterator gsi; | |
585 | gimple *stmt; | |
586 | enum built_in_function start_ix; | |
587 | int start_ix2; | |
588 | location_t clause_loc; | |
589 | vec<tree, va_gc> *args; | |
590 | ||
591 | clauses = gimple_omp_parallel_clauses (entry_stmt); | |
592 | ||
593 | /* Determine what flavor of GOMP_parallel we will be | |
594 | emitting. */ | |
595 | start_ix = BUILT_IN_GOMP_PARALLEL; | |
28567c40 JJ |
596 | tree rtmp = omp_find_clause (clauses, OMP_CLAUSE__REDUCTEMP_); |
597 | if (rtmp) | |
598 | start_ix = BUILT_IN_GOMP_PARALLEL_REDUCTIONS; | |
599 | else if (is_combined_parallel (region)) | |
629b3d75 MJ |
600 | { |
601 | switch (region->inner->type) | |
602 | { | |
603 | case GIMPLE_OMP_FOR: | |
604 | gcc_assert (region->inner->sched_kind != OMP_CLAUSE_SCHEDULE_AUTO); | |
605 | switch (region->inner->sched_kind) | |
606 | { | |
607 | case OMP_CLAUSE_SCHEDULE_RUNTIME: | |
0b887b75 JJ |
608 | /* For lastprivate(conditional:), our implementation |
609 | requires monotonic behavior. */ | |
610 | if (region->inner->has_lastprivate_conditional != 0) | |
611 | start_ix2 = 3; | |
612 | else if ((region->inner->sched_modifiers | |
613 | & OMP_CLAUSE_SCHEDULE_NONMONOTONIC) != 0) | |
28567c40 JJ |
614 | start_ix2 = 6; |
615 | else if ((region->inner->sched_modifiers | |
616 | & OMP_CLAUSE_SCHEDULE_MONOTONIC) == 0) | |
617 | start_ix2 = 7; | |
618 | else | |
619 | start_ix2 = 3; | |
629b3d75 MJ |
620 | break; |
621 | case OMP_CLAUSE_SCHEDULE_DYNAMIC: | |
622 | case OMP_CLAUSE_SCHEDULE_GUIDED: | |
28567c40 | 623 | if ((region->inner->sched_modifiers |
0b887b75 JJ |
624 | & OMP_CLAUSE_SCHEDULE_MONOTONIC) == 0 |
625 | && !region->inner->has_lastprivate_conditional) | |
629b3d75 MJ |
626 | { |
627 | start_ix2 = 3 + region->inner->sched_kind; | |
628 | break; | |
629 | } | |
630 | /* FALLTHRU */ | |
631 | default: | |
632 | start_ix2 = region->inner->sched_kind; | |
633 | break; | |
634 | } | |
635 | start_ix2 += (int) BUILT_IN_GOMP_PARALLEL_LOOP_STATIC; | |
636 | start_ix = (enum built_in_function) start_ix2; | |
637 | break; | |
638 | case GIMPLE_OMP_SECTIONS: | |
639 | start_ix = BUILT_IN_GOMP_PARALLEL_SECTIONS; | |
640 | break; | |
641 | default: | |
642 | gcc_unreachable (); | |
643 | } | |
644 | } | |
645 | ||
646 | /* By default, the value of NUM_THREADS is zero (selected at run time) | |
647 | and there is no conditional. */ | |
648 | cond = NULL_TREE; | |
649 | val = build_int_cst (unsigned_type_node, 0); | |
650 | flags = build_int_cst (unsigned_type_node, 0); | |
651 | ||
652 | c = omp_find_clause (clauses, OMP_CLAUSE_IF); | |
653 | if (c) | |
654 | cond = OMP_CLAUSE_IF_EXPR (c); | |
655 | ||
656 | c = omp_find_clause (clauses, OMP_CLAUSE_NUM_THREADS); | |
657 | if (c) | |
658 | { | |
659 | val = OMP_CLAUSE_NUM_THREADS_EXPR (c); | |
660 | clause_loc = OMP_CLAUSE_LOCATION (c); | |
661 | } | |
662 | else | |
663 | clause_loc = gimple_location (entry_stmt); | |
664 | ||
665 | c = omp_find_clause (clauses, OMP_CLAUSE_PROC_BIND); | |
666 | if (c) | |
667 | flags = build_int_cst (unsigned_type_node, OMP_CLAUSE_PROC_BIND_KIND (c)); | |
668 | ||
669 | /* Ensure 'val' is of the correct type. */ | |
670 | val = fold_convert_loc (clause_loc, unsigned_type_node, val); | |
671 | ||
672 | /* If we found the clause 'if (cond)', build either | |
673 | (cond != 0) or (cond ? val : 1u). */ | |
674 | if (cond) | |
675 | { | |
676 | cond = gimple_boolify (cond); | |
677 | ||
678 | if (integer_zerop (val)) | |
679 | val = fold_build2_loc (clause_loc, | |
680 | EQ_EXPR, unsigned_type_node, cond, | |
681 | build_int_cst (TREE_TYPE (cond), 0)); | |
682 | else | |
683 | { | |
684 | basic_block cond_bb, then_bb, else_bb; | |
685 | edge e, e_then, e_else; | |
686 | tree tmp_then, tmp_else, tmp_join, tmp_var; | |
687 | ||
688 | tmp_var = create_tmp_var (TREE_TYPE (val)); | |
689 | if (gimple_in_ssa_p (cfun)) | |
690 | { | |
691 | tmp_then = make_ssa_name (tmp_var); | |
692 | tmp_else = make_ssa_name (tmp_var); | |
693 | tmp_join = make_ssa_name (tmp_var); | |
694 | } | |
695 | else | |
696 | { | |
697 | tmp_then = tmp_var; | |
698 | tmp_else = tmp_var; | |
699 | tmp_join = tmp_var; | |
700 | } | |
701 | ||
702 | e = split_block_after_labels (bb); | |
703 | cond_bb = e->src; | |
704 | bb = e->dest; | |
705 | remove_edge (e); | |
706 | ||
707 | then_bb = create_empty_bb (cond_bb); | |
708 | else_bb = create_empty_bb (then_bb); | |
709 | set_immediate_dominator (CDI_DOMINATORS, then_bb, cond_bb); | |
710 | set_immediate_dominator (CDI_DOMINATORS, else_bb, cond_bb); | |
711 | ||
712 | stmt = gimple_build_cond_empty (cond); | |
713 | gsi = gsi_start_bb (cond_bb); | |
714 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
715 | ||
716 | gsi = gsi_start_bb (then_bb); | |
717 | expand_omp_build_assign (&gsi, tmp_then, val, true); | |
718 | ||
719 | gsi = gsi_start_bb (else_bb); | |
720 | expand_omp_build_assign (&gsi, tmp_else, | |
721 | build_int_cst (unsigned_type_node, 1), | |
722 | true); | |
723 | ||
724 | make_edge (cond_bb, then_bb, EDGE_TRUE_VALUE); | |
725 | make_edge (cond_bb, else_bb, EDGE_FALSE_VALUE); | |
726 | add_bb_to_loop (then_bb, cond_bb->loop_father); | |
727 | add_bb_to_loop (else_bb, cond_bb->loop_father); | |
728 | e_then = make_edge (then_bb, bb, EDGE_FALLTHRU); | |
729 | e_else = make_edge (else_bb, bb, EDGE_FALLTHRU); | |
730 | ||
731 | if (gimple_in_ssa_p (cfun)) | |
732 | { | |
733 | gphi *phi = create_phi_node (tmp_join, bb); | |
734 | add_phi_arg (phi, tmp_then, e_then, UNKNOWN_LOCATION); | |
735 | add_phi_arg (phi, tmp_else, e_else, UNKNOWN_LOCATION); | |
736 | } | |
737 | ||
738 | val = tmp_join; | |
739 | } | |
740 | ||
741 | gsi = gsi_start_bb (bb); | |
742 | val = force_gimple_operand_gsi (&gsi, val, true, NULL_TREE, | |
743 | false, GSI_CONTINUE_LINKING); | |
744 | } | |
745 | ||
65f4b875 | 746 | gsi = gsi_last_nondebug_bb (bb); |
629b3d75 MJ |
747 | t = gimple_omp_parallel_data_arg (entry_stmt); |
748 | if (t == NULL) | |
749 | t1 = null_pointer_node; | |
750 | else | |
751 | t1 = build_fold_addr_expr (t); | |
752 | tree child_fndecl = gimple_omp_parallel_child_fn (entry_stmt); | |
753 | t2 = build_fold_addr_expr (child_fndecl); | |
754 | ||
755 | vec_alloc (args, 4 + vec_safe_length (ws_args)); | |
756 | args->quick_push (t2); | |
757 | args->quick_push (t1); | |
758 | args->quick_push (val); | |
759 | if (ws_args) | |
760 | args->splice (*ws_args); | |
761 | args->quick_push (flags); | |
762 | ||
763 | t = build_call_expr_loc_vec (UNKNOWN_LOCATION, | |
764 | builtin_decl_explicit (start_ix), args); | |
765 | ||
28567c40 JJ |
766 | if (rtmp) |
767 | { | |
768 | tree type = TREE_TYPE (OMP_CLAUSE_DECL (rtmp)); | |
769 | t = build2 (MODIFY_EXPR, type, OMP_CLAUSE_DECL (rtmp), | |
770 | fold_convert (type, | |
771 | fold_convert (pointer_sized_int_node, t))); | |
772 | } | |
629b3d75 MJ |
773 | force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, |
774 | false, GSI_CONTINUE_LINKING); | |
775 | ||
776 | if (hsa_gen_requested_p () | |
777 | && parallel_needs_hsa_kernel_p (region)) | |
778 | { | |
779 | cgraph_node *child_cnode = cgraph_node::get (child_fndecl); | |
780 | hsa_register_kernel (child_cnode); | |
781 | } | |
782 | } | |
783 | ||
629b3d75 MJ |
784 | /* Build the function call to GOMP_task to actually |
785 | generate the task operation. BB is the block where to insert the code. */ | |
786 | ||
787 | static void | |
788 | expand_task_call (struct omp_region *region, basic_block bb, | |
789 | gomp_task *entry_stmt) | |
790 | { | |
791 | tree t1, t2, t3; | |
792 | gimple_stmt_iterator gsi; | |
793 | location_t loc = gimple_location (entry_stmt); | |
794 | ||
795 | tree clauses = gimple_omp_task_clauses (entry_stmt); | |
796 | ||
797 | tree ifc = omp_find_clause (clauses, OMP_CLAUSE_IF); | |
798 | tree untied = omp_find_clause (clauses, OMP_CLAUSE_UNTIED); | |
799 | tree mergeable = omp_find_clause (clauses, OMP_CLAUSE_MERGEABLE); | |
800 | tree depend = omp_find_clause (clauses, OMP_CLAUSE_DEPEND); | |
801 | tree finalc = omp_find_clause (clauses, OMP_CLAUSE_FINAL); | |
802 | tree priority = omp_find_clause (clauses, OMP_CLAUSE_PRIORITY); | |
803 | ||
804 | unsigned int iflags | |
805 | = (untied ? GOMP_TASK_FLAG_UNTIED : 0) | |
806 | | (mergeable ? GOMP_TASK_FLAG_MERGEABLE : 0) | |
807 | | (depend ? GOMP_TASK_FLAG_DEPEND : 0); | |
808 | ||
809 | bool taskloop_p = gimple_omp_task_taskloop_p (entry_stmt); | |
810 | tree startvar = NULL_TREE, endvar = NULL_TREE, step = NULL_TREE; | |
811 | tree num_tasks = NULL_TREE; | |
812 | bool ull = false; | |
813 | if (taskloop_p) | |
814 | { | |
815 | gimple *g = last_stmt (region->outer->entry); | |
816 | gcc_assert (gimple_code (g) == GIMPLE_OMP_FOR | |
817 | && gimple_omp_for_kind (g) == GF_OMP_FOR_KIND_TASKLOOP); | |
818 | struct omp_for_data fd; | |
819 | omp_extract_for_data (as_a <gomp_for *> (g), &fd, NULL); | |
820 | startvar = omp_find_clause (clauses, OMP_CLAUSE__LOOPTEMP_); | |
821 | endvar = omp_find_clause (OMP_CLAUSE_CHAIN (startvar), | |
822 | OMP_CLAUSE__LOOPTEMP_); | |
823 | startvar = OMP_CLAUSE_DECL (startvar); | |
824 | endvar = OMP_CLAUSE_DECL (endvar); | |
825 | step = fold_convert_loc (loc, fd.iter_type, fd.loop.step); | |
826 | if (fd.loop.cond_code == LT_EXPR) | |
827 | iflags |= GOMP_TASK_FLAG_UP; | |
828 | tree tclauses = gimple_omp_for_clauses (g); | |
829 | num_tasks = omp_find_clause (tclauses, OMP_CLAUSE_NUM_TASKS); | |
830 | if (num_tasks) | |
831 | num_tasks = OMP_CLAUSE_NUM_TASKS_EXPR (num_tasks); | |
832 | else | |
833 | { | |
834 | num_tasks = omp_find_clause (tclauses, OMP_CLAUSE_GRAINSIZE); | |
835 | if (num_tasks) | |
836 | { | |
837 | iflags |= GOMP_TASK_FLAG_GRAINSIZE; | |
838 | num_tasks = OMP_CLAUSE_GRAINSIZE_EXPR (num_tasks); | |
839 | } | |
840 | else | |
841 | num_tasks = integer_zero_node; | |
842 | } | |
843 | num_tasks = fold_convert_loc (loc, long_integer_type_node, num_tasks); | |
844 | if (ifc == NULL_TREE) | |
845 | iflags |= GOMP_TASK_FLAG_IF; | |
846 | if (omp_find_clause (tclauses, OMP_CLAUSE_NOGROUP)) | |
847 | iflags |= GOMP_TASK_FLAG_NOGROUP; | |
848 | ull = fd.iter_type == long_long_unsigned_type_node; | |
28567c40 JJ |
849 | if (omp_find_clause (clauses, OMP_CLAUSE_REDUCTION)) |
850 | iflags |= GOMP_TASK_FLAG_REDUCTION; | |
629b3d75 MJ |
851 | } |
852 | else if (priority) | |
853 | iflags |= GOMP_TASK_FLAG_PRIORITY; | |
854 | ||
855 | tree flags = build_int_cst (unsigned_type_node, iflags); | |
856 | ||
857 | tree cond = boolean_true_node; | |
858 | if (ifc) | |
859 | { | |
860 | if (taskloop_p) | |
861 | { | |
862 | tree t = gimple_boolify (OMP_CLAUSE_IF_EXPR (ifc)); | |
863 | t = fold_build3_loc (loc, COND_EXPR, unsigned_type_node, t, | |
864 | build_int_cst (unsigned_type_node, | |
865 | GOMP_TASK_FLAG_IF), | |
866 | build_int_cst (unsigned_type_node, 0)); | |
867 | flags = fold_build2_loc (loc, PLUS_EXPR, unsigned_type_node, | |
868 | flags, t); | |
869 | } | |
870 | else | |
871 | cond = gimple_boolify (OMP_CLAUSE_IF_EXPR (ifc)); | |
872 | } | |
873 | ||
874 | if (finalc) | |
875 | { | |
876 | tree t = gimple_boolify (OMP_CLAUSE_FINAL_EXPR (finalc)); | |
877 | t = fold_build3_loc (loc, COND_EXPR, unsigned_type_node, t, | |
878 | build_int_cst (unsigned_type_node, | |
879 | GOMP_TASK_FLAG_FINAL), | |
880 | build_int_cst (unsigned_type_node, 0)); | |
881 | flags = fold_build2_loc (loc, PLUS_EXPR, unsigned_type_node, flags, t); | |
882 | } | |
883 | if (depend) | |
884 | depend = OMP_CLAUSE_DECL (depend); | |
885 | else | |
886 | depend = build_int_cst (ptr_type_node, 0); | |
887 | if (priority) | |
888 | priority = fold_convert (integer_type_node, | |
889 | OMP_CLAUSE_PRIORITY_EXPR (priority)); | |
890 | else | |
891 | priority = integer_zero_node; | |
892 | ||
65f4b875 | 893 | gsi = gsi_last_nondebug_bb (bb); |
629b3d75 MJ |
894 | tree t = gimple_omp_task_data_arg (entry_stmt); |
895 | if (t == NULL) | |
896 | t2 = null_pointer_node; | |
897 | else | |
898 | t2 = build_fold_addr_expr_loc (loc, t); | |
899 | t1 = build_fold_addr_expr_loc (loc, gimple_omp_task_child_fn (entry_stmt)); | |
900 | t = gimple_omp_task_copy_fn (entry_stmt); | |
901 | if (t == NULL) | |
902 | t3 = null_pointer_node; | |
903 | else | |
904 | t3 = build_fold_addr_expr_loc (loc, t); | |
905 | ||
906 | if (taskloop_p) | |
907 | t = build_call_expr (ull | |
908 | ? builtin_decl_explicit (BUILT_IN_GOMP_TASKLOOP_ULL) | |
909 | : builtin_decl_explicit (BUILT_IN_GOMP_TASKLOOP), | |
910 | 11, t1, t2, t3, | |
911 | gimple_omp_task_arg_size (entry_stmt), | |
912 | gimple_omp_task_arg_align (entry_stmt), flags, | |
913 | num_tasks, priority, startvar, endvar, step); | |
914 | else | |
915 | t = build_call_expr (builtin_decl_explicit (BUILT_IN_GOMP_TASK), | |
916 | 9, t1, t2, t3, | |
917 | gimple_omp_task_arg_size (entry_stmt), | |
918 | gimple_omp_task_arg_align (entry_stmt), cond, flags, | |
919 | depend, priority); | |
920 | ||
921 | force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
922 | false, GSI_CONTINUE_LINKING); | |
923 | } | |
924 | ||
28567c40 JJ |
925 | /* Build the function call to GOMP_taskwait_depend to actually |
926 | generate the taskwait operation. BB is the block where to insert the | |
927 | code. */ | |
928 | ||
929 | static void | |
930 | expand_taskwait_call (basic_block bb, gomp_task *entry_stmt) | |
931 | { | |
932 | tree clauses = gimple_omp_task_clauses (entry_stmt); | |
933 | tree depend = omp_find_clause (clauses, OMP_CLAUSE_DEPEND); | |
934 | if (depend == NULL_TREE) | |
935 | return; | |
936 | ||
937 | depend = OMP_CLAUSE_DECL (depend); | |
938 | ||
939 | gimple_stmt_iterator gsi = gsi_last_nondebug_bb (bb); | |
940 | tree t | |
941 | = build_call_expr (builtin_decl_explicit (BUILT_IN_GOMP_TASKWAIT_DEPEND), | |
942 | 1, depend); | |
943 | ||
944 | force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
945 | false, GSI_CONTINUE_LINKING); | |
946 | } | |
947 | ||
948 | /* Build the function call to GOMP_teams_reg to actually | |
949 | generate the host teams operation. REGION is the teams region | |
950 | being expanded. BB is the block where to insert the code. */ | |
951 | ||
952 | static void | |
953 | expand_teams_call (basic_block bb, gomp_teams *entry_stmt) | |
954 | { | |
955 | tree clauses = gimple_omp_teams_clauses (entry_stmt); | |
956 | tree num_teams = omp_find_clause (clauses, OMP_CLAUSE_NUM_TEAMS); | |
957 | if (num_teams == NULL_TREE) | |
958 | num_teams = build_int_cst (unsigned_type_node, 0); | |
959 | else | |
960 | { | |
961 | num_teams = OMP_CLAUSE_NUM_TEAMS_EXPR (num_teams); | |
962 | num_teams = fold_convert (unsigned_type_node, num_teams); | |
963 | } | |
964 | tree thread_limit = omp_find_clause (clauses, OMP_CLAUSE_THREAD_LIMIT); | |
965 | if (thread_limit == NULL_TREE) | |
966 | thread_limit = build_int_cst (unsigned_type_node, 0); | |
967 | else | |
968 | { | |
969 | thread_limit = OMP_CLAUSE_THREAD_LIMIT_EXPR (thread_limit); | |
970 | thread_limit = fold_convert (unsigned_type_node, thread_limit); | |
971 | } | |
972 | ||
973 | gimple_stmt_iterator gsi = gsi_last_nondebug_bb (bb); | |
974 | tree t = gimple_omp_teams_data_arg (entry_stmt), t1; | |
975 | if (t == NULL) | |
976 | t1 = null_pointer_node; | |
977 | else | |
978 | t1 = build_fold_addr_expr (t); | |
979 | tree child_fndecl = gimple_omp_teams_child_fn (entry_stmt); | |
980 | tree t2 = build_fold_addr_expr (child_fndecl); | |
981 | ||
28567c40 JJ |
982 | vec<tree, va_gc> *args; |
983 | vec_alloc (args, 5); | |
984 | args->quick_push (t2); | |
985 | args->quick_push (t1); | |
986 | args->quick_push (num_teams); | |
987 | args->quick_push (thread_limit); | |
988 | /* For future extensibility. */ | |
989 | args->quick_push (build_zero_cst (unsigned_type_node)); | |
990 | ||
991 | t = build_call_expr_loc_vec (UNKNOWN_LOCATION, | |
992 | builtin_decl_explicit (BUILT_IN_GOMP_TEAMS_REG), | |
993 | args); | |
994 | ||
995 | force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
996 | false, GSI_CONTINUE_LINKING); | |
997 | } | |
998 | ||
629b3d75 MJ |
999 | /* Chain all the DECLs in LIST by their TREE_CHAIN fields. */ |
1000 | ||
1001 | static tree | |
1002 | vec2chain (vec<tree, va_gc> *v) | |
1003 | { | |
1004 | tree chain = NULL_TREE, t; | |
1005 | unsigned ix; | |
1006 | ||
1007 | FOR_EACH_VEC_SAFE_ELT_REVERSE (v, ix, t) | |
1008 | { | |
1009 | DECL_CHAIN (t) = chain; | |
1010 | chain = t; | |
1011 | } | |
1012 | ||
1013 | return chain; | |
1014 | } | |
1015 | ||
1016 | /* Remove barriers in REGION->EXIT's block. Note that this is only | |
1017 | valid for GIMPLE_OMP_PARALLEL regions. Since the end of a parallel region | |
1018 | is an implicit barrier, any workshare inside the GIMPLE_OMP_PARALLEL that | |
1019 | left a barrier at the end of the GIMPLE_OMP_PARALLEL region can now be | |
1020 | removed. */ | |
1021 | ||
1022 | static void | |
1023 | remove_exit_barrier (struct omp_region *region) | |
1024 | { | |
1025 | gimple_stmt_iterator gsi; | |
1026 | basic_block exit_bb; | |
1027 | edge_iterator ei; | |
1028 | edge e; | |
1029 | gimple *stmt; | |
1030 | int any_addressable_vars = -1; | |
1031 | ||
1032 | exit_bb = region->exit; | |
1033 | ||
1034 | /* If the parallel region doesn't return, we don't have REGION->EXIT | |
1035 | block at all. */ | |
1036 | if (! exit_bb) | |
1037 | return; | |
1038 | ||
1039 | /* The last insn in the block will be the parallel's GIMPLE_OMP_RETURN. The | |
1040 | workshare's GIMPLE_OMP_RETURN will be in a preceding block. The kinds of | |
1041 | statements that can appear in between are extremely limited -- no | |
1042 | memory operations at all. Here, we allow nothing at all, so the | |
1043 | only thing we allow to precede this GIMPLE_OMP_RETURN is a label. */ | |
65f4b875 | 1044 | gsi = gsi_last_nondebug_bb (exit_bb); |
629b3d75 | 1045 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_RETURN); |
65f4b875 | 1046 | gsi_prev_nondebug (&gsi); |
629b3d75 MJ |
1047 | if (!gsi_end_p (gsi) && gimple_code (gsi_stmt (gsi)) != GIMPLE_LABEL) |
1048 | return; | |
1049 | ||
1050 | FOR_EACH_EDGE (e, ei, exit_bb->preds) | |
1051 | { | |
65f4b875 | 1052 | gsi = gsi_last_nondebug_bb (e->src); |
629b3d75 MJ |
1053 | if (gsi_end_p (gsi)) |
1054 | continue; | |
1055 | stmt = gsi_stmt (gsi); | |
1056 | if (gimple_code (stmt) == GIMPLE_OMP_RETURN | |
1057 | && !gimple_omp_return_nowait_p (stmt)) | |
1058 | { | |
1059 | /* OpenMP 3.0 tasks unfortunately prevent this optimization | |
1060 | in many cases. If there could be tasks queued, the barrier | |
1061 | might be needed to let the tasks run before some local | |
1062 | variable of the parallel that the task uses as shared | |
1063 | runs out of scope. The task can be spawned either | |
1064 | from within current function (this would be easy to check) | |
1065 | or from some function it calls and gets passed an address | |
1066 | of such a variable. */ | |
1067 | if (any_addressable_vars < 0) | |
1068 | { | |
1069 | gomp_parallel *parallel_stmt | |
1070 | = as_a <gomp_parallel *> (last_stmt (region->entry)); | |
1071 | tree child_fun = gimple_omp_parallel_child_fn (parallel_stmt); | |
1072 | tree local_decls, block, decl; | |
1073 | unsigned ix; | |
1074 | ||
1075 | any_addressable_vars = 0; | |
1076 | FOR_EACH_LOCAL_DECL (DECL_STRUCT_FUNCTION (child_fun), ix, decl) | |
1077 | if (TREE_ADDRESSABLE (decl)) | |
1078 | { | |
1079 | any_addressable_vars = 1; | |
1080 | break; | |
1081 | } | |
1082 | for (block = gimple_block (stmt); | |
1083 | !any_addressable_vars | |
1084 | && block | |
1085 | && TREE_CODE (block) == BLOCK; | |
1086 | block = BLOCK_SUPERCONTEXT (block)) | |
1087 | { | |
1088 | for (local_decls = BLOCK_VARS (block); | |
1089 | local_decls; | |
1090 | local_decls = DECL_CHAIN (local_decls)) | |
1091 | if (TREE_ADDRESSABLE (local_decls)) | |
1092 | { | |
1093 | any_addressable_vars = 1; | |
1094 | break; | |
1095 | } | |
1096 | if (block == gimple_block (parallel_stmt)) | |
1097 | break; | |
1098 | } | |
1099 | } | |
1100 | if (!any_addressable_vars) | |
1101 | gimple_omp_return_set_nowait (stmt); | |
1102 | } | |
1103 | } | |
1104 | } | |
1105 | ||
1106 | static void | |
1107 | remove_exit_barriers (struct omp_region *region) | |
1108 | { | |
1109 | if (region->type == GIMPLE_OMP_PARALLEL) | |
1110 | remove_exit_barrier (region); | |
1111 | ||
1112 | if (region->inner) | |
1113 | { | |
1114 | region = region->inner; | |
1115 | remove_exit_barriers (region); | |
1116 | while (region->next) | |
1117 | { | |
1118 | region = region->next; | |
1119 | remove_exit_barriers (region); | |
1120 | } | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | /* Optimize omp_get_thread_num () and omp_get_num_threads () | |
1125 | calls. These can't be declared as const functions, but | |
1126 | within one parallel body they are constant, so they can be | |
1127 | transformed there into __builtin_omp_get_{thread_num,num_threads} () | |
1128 | which are declared const. Similarly for task body, except | |
1129 | that in untied task omp_get_thread_num () can change at any task | |
1130 | scheduling point. */ | |
1131 | ||
1132 | static void | |
1133 | optimize_omp_library_calls (gimple *entry_stmt) | |
1134 | { | |
1135 | basic_block bb; | |
1136 | gimple_stmt_iterator gsi; | |
1137 | tree thr_num_tree = builtin_decl_explicit (BUILT_IN_OMP_GET_THREAD_NUM); | |
1138 | tree thr_num_id = DECL_ASSEMBLER_NAME (thr_num_tree); | |
1139 | tree num_thr_tree = builtin_decl_explicit (BUILT_IN_OMP_GET_NUM_THREADS); | |
1140 | tree num_thr_id = DECL_ASSEMBLER_NAME (num_thr_tree); | |
1141 | bool untied_task = (gimple_code (entry_stmt) == GIMPLE_OMP_TASK | |
1142 | && omp_find_clause (gimple_omp_task_clauses (entry_stmt), | |
1143 | OMP_CLAUSE_UNTIED) != NULL); | |
1144 | ||
1145 | FOR_EACH_BB_FN (bb, cfun) | |
1146 | for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi)) | |
1147 | { | |
1148 | gimple *call = gsi_stmt (gsi); | |
1149 | tree decl; | |
1150 | ||
1151 | if (is_gimple_call (call) | |
1152 | && (decl = gimple_call_fndecl (call)) | |
1153 | && DECL_EXTERNAL (decl) | |
1154 | && TREE_PUBLIC (decl) | |
1155 | && DECL_INITIAL (decl) == NULL) | |
1156 | { | |
1157 | tree built_in; | |
1158 | ||
1159 | if (DECL_NAME (decl) == thr_num_id) | |
1160 | { | |
1161 | /* In #pragma omp task untied omp_get_thread_num () can change | |
1162 | during the execution of the task region. */ | |
1163 | if (untied_task) | |
1164 | continue; | |
1165 | built_in = builtin_decl_explicit (BUILT_IN_OMP_GET_THREAD_NUM); | |
1166 | } | |
1167 | else if (DECL_NAME (decl) == num_thr_id) | |
1168 | built_in = builtin_decl_explicit (BUILT_IN_OMP_GET_NUM_THREADS); | |
1169 | else | |
1170 | continue; | |
1171 | ||
1172 | if (DECL_ASSEMBLER_NAME (decl) != DECL_ASSEMBLER_NAME (built_in) | |
1173 | || gimple_call_num_args (call) != 0) | |
1174 | continue; | |
1175 | ||
1176 | if (flag_exceptions && !TREE_NOTHROW (decl)) | |
1177 | continue; | |
1178 | ||
1179 | if (TREE_CODE (TREE_TYPE (decl)) != FUNCTION_TYPE | |
1180 | || !types_compatible_p (TREE_TYPE (TREE_TYPE (decl)), | |
1181 | TREE_TYPE (TREE_TYPE (built_in)))) | |
1182 | continue; | |
1183 | ||
1184 | gimple_call_set_fndecl (call, built_in); | |
1185 | } | |
1186 | } | |
1187 | } | |
1188 | ||
1189 | /* Callback for expand_omp_build_assign. Return non-NULL if *tp needs to be | |
1190 | regimplified. */ | |
1191 | ||
1192 | static tree | |
1193 | expand_omp_regimplify_p (tree *tp, int *walk_subtrees, void *) | |
1194 | { | |
1195 | tree t = *tp; | |
1196 | ||
1197 | /* Any variable with DECL_VALUE_EXPR needs to be regimplified. */ | |
1198 | if (VAR_P (t) && DECL_HAS_VALUE_EXPR_P (t)) | |
1199 | return t; | |
1200 | ||
1201 | if (TREE_CODE (t) == ADDR_EXPR) | |
1202 | recompute_tree_invariant_for_addr_expr (t); | |
1203 | ||
1204 | *walk_subtrees = !TYPE_P (t) && !DECL_P (t); | |
1205 | return NULL_TREE; | |
1206 | } | |
1207 | ||
1208 | /* Prepend or append TO = FROM assignment before or after *GSI_P. */ | |
1209 | ||
1210 | static void | |
1211 | expand_omp_build_assign (gimple_stmt_iterator *gsi_p, tree to, tree from, | |
1212 | bool after) | |
1213 | { | |
1214 | bool simple_p = DECL_P (to) && TREE_ADDRESSABLE (to); | |
1215 | from = force_gimple_operand_gsi (gsi_p, from, simple_p, NULL_TREE, | |
1216 | !after, after ? GSI_CONTINUE_LINKING | |
1217 | : GSI_SAME_STMT); | |
1218 | gimple *stmt = gimple_build_assign (to, from); | |
1219 | if (after) | |
1220 | gsi_insert_after (gsi_p, stmt, GSI_CONTINUE_LINKING); | |
1221 | else | |
1222 | gsi_insert_before (gsi_p, stmt, GSI_SAME_STMT); | |
1223 | if (walk_tree (&from, expand_omp_regimplify_p, NULL, NULL) | |
1224 | || walk_tree (&to, expand_omp_regimplify_p, NULL, NULL)) | |
1225 | { | |
1226 | gimple_stmt_iterator gsi = gsi_for_stmt (stmt); | |
1227 | gimple_regimplify_operands (stmt, &gsi); | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | /* Expand the OpenMP parallel or task directive starting at REGION. */ | |
1232 | ||
1233 | static void | |
1234 | expand_omp_taskreg (struct omp_region *region) | |
1235 | { | |
1236 | basic_block entry_bb, exit_bb, new_bb; | |
1237 | struct function *child_cfun; | |
1238 | tree child_fn, block, t; | |
1239 | gimple_stmt_iterator gsi; | |
1240 | gimple *entry_stmt, *stmt; | |
1241 | edge e; | |
1242 | vec<tree, va_gc> *ws_args; | |
1243 | ||
1244 | entry_stmt = last_stmt (region->entry); | |
28567c40 JJ |
1245 | if (gimple_code (entry_stmt) == GIMPLE_OMP_TASK |
1246 | && gimple_omp_task_taskwait_p (entry_stmt)) | |
1247 | { | |
1248 | new_bb = region->entry; | |
1249 | gsi = gsi_last_nondebug_bb (region->entry); | |
1250 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_TASK); | |
1251 | gsi_remove (&gsi, true); | |
1252 | expand_taskwait_call (new_bb, as_a <gomp_task *> (entry_stmt)); | |
1253 | return; | |
1254 | } | |
1255 | ||
629b3d75 MJ |
1256 | child_fn = gimple_omp_taskreg_child_fn (entry_stmt); |
1257 | child_cfun = DECL_STRUCT_FUNCTION (child_fn); | |
1258 | ||
1259 | entry_bb = region->entry; | |
1260 | if (gimple_code (entry_stmt) == GIMPLE_OMP_TASK) | |
1261 | exit_bb = region->cont; | |
1262 | else | |
1263 | exit_bb = region->exit; | |
1264 | ||
5e9d6aa4 | 1265 | if (is_combined_parallel (region)) |
629b3d75 MJ |
1266 | ws_args = region->ws_args; |
1267 | else | |
1268 | ws_args = NULL; | |
1269 | ||
1270 | if (child_cfun->cfg) | |
1271 | { | |
1272 | /* Due to inlining, it may happen that we have already outlined | |
1273 | the region, in which case all we need to do is make the | |
1274 | sub-graph unreachable and emit the parallel call. */ | |
1275 | edge entry_succ_e, exit_succ_e; | |
1276 | ||
1277 | entry_succ_e = single_succ_edge (entry_bb); | |
1278 | ||
65f4b875 | 1279 | gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 | 1280 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_PARALLEL |
28567c40 JJ |
1281 | || gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_TASK |
1282 | || gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_TEAMS); | |
629b3d75 MJ |
1283 | gsi_remove (&gsi, true); |
1284 | ||
1285 | new_bb = entry_bb; | |
1286 | if (exit_bb) | |
1287 | { | |
1288 | exit_succ_e = single_succ_edge (exit_bb); | |
1289 | make_edge (new_bb, exit_succ_e->dest, EDGE_FALLTHRU); | |
1290 | } | |
1291 | remove_edge_and_dominated_blocks (entry_succ_e); | |
1292 | } | |
1293 | else | |
1294 | { | |
1295 | unsigned srcidx, dstidx, num; | |
1296 | ||
1297 | /* If the parallel region needs data sent from the parent | |
1298 | function, then the very first statement (except possible | |
1299 | tree profile counter updates) of the parallel body | |
1300 | is a copy assignment .OMP_DATA_I = &.OMP_DATA_O. Since | |
1301 | &.OMP_DATA_O is passed as an argument to the child function, | |
1302 | we need to replace it with the argument as seen by the child | |
1303 | function. | |
1304 | ||
1305 | In most cases, this will end up being the identity assignment | |
1306 | .OMP_DATA_I = .OMP_DATA_I. However, if the parallel body had | |
1307 | a function call that has been inlined, the original PARM_DECL | |
1308 | .OMP_DATA_I may have been converted into a different local | |
1309 | variable. In which case, we need to keep the assignment. */ | |
1310 | if (gimple_omp_taskreg_data_arg (entry_stmt)) | |
1311 | { | |
1312 | basic_block entry_succ_bb | |
1313 | = single_succ_p (entry_bb) ? single_succ (entry_bb) | |
1314 | : FALLTHRU_EDGE (entry_bb)->dest; | |
1315 | tree arg; | |
1316 | gimple *parcopy_stmt = NULL; | |
1317 | ||
1318 | for (gsi = gsi_start_bb (entry_succ_bb); ; gsi_next (&gsi)) | |
1319 | { | |
1320 | gimple *stmt; | |
1321 | ||
1322 | gcc_assert (!gsi_end_p (gsi)); | |
1323 | stmt = gsi_stmt (gsi); | |
1324 | if (gimple_code (stmt) != GIMPLE_ASSIGN) | |
1325 | continue; | |
1326 | ||
1327 | if (gimple_num_ops (stmt) == 2) | |
1328 | { | |
1329 | tree arg = gimple_assign_rhs1 (stmt); | |
1330 | ||
1331 | /* We're ignore the subcode because we're | |
1332 | effectively doing a STRIP_NOPS. */ | |
1333 | ||
1334 | if (TREE_CODE (arg) == ADDR_EXPR | |
28567c40 JJ |
1335 | && (TREE_OPERAND (arg, 0) |
1336 | == gimple_omp_taskreg_data_arg (entry_stmt))) | |
629b3d75 MJ |
1337 | { |
1338 | parcopy_stmt = stmt; | |
1339 | break; | |
1340 | } | |
1341 | } | |
1342 | } | |
1343 | ||
1344 | gcc_assert (parcopy_stmt != NULL); | |
1345 | arg = DECL_ARGUMENTS (child_fn); | |
1346 | ||
1347 | if (!gimple_in_ssa_p (cfun)) | |
1348 | { | |
1349 | if (gimple_assign_lhs (parcopy_stmt) == arg) | |
1350 | gsi_remove (&gsi, true); | |
1351 | else | |
1352 | { | |
01914336 | 1353 | /* ?? Is setting the subcode really necessary ?? */ |
629b3d75 MJ |
1354 | gimple_omp_set_subcode (parcopy_stmt, TREE_CODE (arg)); |
1355 | gimple_assign_set_rhs1 (parcopy_stmt, arg); | |
1356 | } | |
1357 | } | |
1358 | else | |
1359 | { | |
1360 | tree lhs = gimple_assign_lhs (parcopy_stmt); | |
1361 | gcc_assert (SSA_NAME_VAR (lhs) == arg); | |
1362 | /* We'd like to set the rhs to the default def in the child_fn, | |
1363 | but it's too early to create ssa names in the child_fn. | |
1364 | Instead, we set the rhs to the parm. In | |
1365 | move_sese_region_to_fn, we introduce a default def for the | |
1366 | parm, map the parm to it's default def, and once we encounter | |
1367 | this stmt, replace the parm with the default def. */ | |
1368 | gimple_assign_set_rhs1 (parcopy_stmt, arg); | |
1369 | update_stmt (parcopy_stmt); | |
1370 | } | |
1371 | } | |
1372 | ||
1373 | /* Declare local variables needed in CHILD_CFUN. */ | |
1374 | block = DECL_INITIAL (child_fn); | |
1375 | BLOCK_VARS (block) = vec2chain (child_cfun->local_decls); | |
1376 | /* The gimplifier could record temporaries in parallel/task block | |
1377 | rather than in containing function's local_decls chain, | |
1378 | which would mean cgraph missed finalizing them. Do it now. */ | |
1379 | for (t = BLOCK_VARS (block); t; t = DECL_CHAIN (t)) | |
1380 | if (VAR_P (t) && TREE_STATIC (t) && !DECL_EXTERNAL (t)) | |
1381 | varpool_node::finalize_decl (t); | |
1382 | DECL_SAVED_TREE (child_fn) = NULL; | |
1383 | /* We'll create a CFG for child_fn, so no gimple body is needed. */ | |
1384 | gimple_set_body (child_fn, NULL); | |
1385 | TREE_USED (block) = 1; | |
1386 | ||
1387 | /* Reset DECL_CONTEXT on function arguments. */ | |
1388 | for (t = DECL_ARGUMENTS (child_fn); t; t = DECL_CHAIN (t)) | |
1389 | DECL_CONTEXT (t) = child_fn; | |
1390 | ||
1391 | /* Split ENTRY_BB at GIMPLE_OMP_PARALLEL or GIMPLE_OMP_TASK, | |
1392 | so that it can be moved to the child function. */ | |
65f4b875 | 1393 | gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
1394 | stmt = gsi_stmt (gsi); |
1395 | gcc_assert (stmt && (gimple_code (stmt) == GIMPLE_OMP_PARALLEL | |
28567c40 JJ |
1396 | || gimple_code (stmt) == GIMPLE_OMP_TASK |
1397 | || gimple_code (stmt) == GIMPLE_OMP_TEAMS)); | |
629b3d75 MJ |
1398 | e = split_block (entry_bb, stmt); |
1399 | gsi_remove (&gsi, true); | |
1400 | entry_bb = e->dest; | |
1401 | edge e2 = NULL; | |
28567c40 | 1402 | if (gimple_code (entry_stmt) != GIMPLE_OMP_TASK) |
629b3d75 MJ |
1403 | single_succ_edge (entry_bb)->flags = EDGE_FALLTHRU; |
1404 | else | |
1405 | { | |
1406 | e2 = make_edge (e->src, BRANCH_EDGE (entry_bb)->dest, EDGE_ABNORMAL); | |
1407 | gcc_assert (e2->dest == region->exit); | |
1408 | remove_edge (BRANCH_EDGE (entry_bb)); | |
1409 | set_immediate_dominator (CDI_DOMINATORS, e2->dest, e->src); | |
65f4b875 | 1410 | gsi = gsi_last_nondebug_bb (region->exit); |
629b3d75 MJ |
1411 | gcc_assert (!gsi_end_p (gsi) |
1412 | && gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_RETURN); | |
1413 | gsi_remove (&gsi, true); | |
1414 | } | |
1415 | ||
1416 | /* Convert GIMPLE_OMP_{RETURN,CONTINUE} into a RETURN_EXPR. */ | |
1417 | if (exit_bb) | |
1418 | { | |
65f4b875 | 1419 | gsi = gsi_last_nondebug_bb (exit_bb); |
629b3d75 MJ |
1420 | gcc_assert (!gsi_end_p (gsi) |
1421 | && (gimple_code (gsi_stmt (gsi)) | |
1422 | == (e2 ? GIMPLE_OMP_CONTINUE : GIMPLE_OMP_RETURN))); | |
1423 | stmt = gimple_build_return (NULL); | |
1424 | gsi_insert_after (&gsi, stmt, GSI_SAME_STMT); | |
1425 | gsi_remove (&gsi, true); | |
1426 | } | |
1427 | ||
1428 | /* Move the parallel region into CHILD_CFUN. */ | |
1429 | ||
1430 | if (gimple_in_ssa_p (cfun)) | |
1431 | { | |
1432 | init_tree_ssa (child_cfun); | |
1433 | init_ssa_operands (child_cfun); | |
1434 | child_cfun->gimple_df->in_ssa_p = true; | |
1435 | block = NULL_TREE; | |
1436 | } | |
1437 | else | |
1438 | block = gimple_block (entry_stmt); | |
1439 | ||
1440 | new_bb = move_sese_region_to_fn (child_cfun, entry_bb, exit_bb, block); | |
1441 | if (exit_bb) | |
1442 | single_succ_edge (new_bb)->flags = EDGE_FALLTHRU; | |
1443 | if (e2) | |
1444 | { | |
1445 | basic_block dest_bb = e2->dest; | |
1446 | if (!exit_bb) | |
1447 | make_edge (new_bb, dest_bb, EDGE_FALLTHRU); | |
1448 | remove_edge (e2); | |
1449 | set_immediate_dominator (CDI_DOMINATORS, dest_bb, new_bb); | |
1450 | } | |
1451 | /* When the OMP expansion process cannot guarantee an up-to-date | |
01914336 | 1452 | loop tree arrange for the child function to fixup loops. */ |
629b3d75 MJ |
1453 | if (loops_state_satisfies_p (LOOPS_NEED_FIXUP)) |
1454 | child_cfun->x_current_loops->state |= LOOPS_NEED_FIXUP; | |
1455 | ||
1456 | /* Remove non-local VAR_DECLs from child_cfun->local_decls list. */ | |
1457 | num = vec_safe_length (child_cfun->local_decls); | |
1458 | for (srcidx = 0, dstidx = 0; srcidx < num; srcidx++) | |
1459 | { | |
1460 | t = (*child_cfun->local_decls)[srcidx]; | |
1461 | if (DECL_CONTEXT (t) == cfun->decl) | |
1462 | continue; | |
1463 | if (srcidx != dstidx) | |
1464 | (*child_cfun->local_decls)[dstidx] = t; | |
1465 | dstidx++; | |
1466 | } | |
1467 | if (dstidx != num) | |
1468 | vec_safe_truncate (child_cfun->local_decls, dstidx); | |
1469 | ||
1470 | /* Inform the callgraph about the new function. */ | |
1471 | child_cfun->curr_properties = cfun->curr_properties; | |
1472 | child_cfun->has_simduid_loops |= cfun->has_simduid_loops; | |
1473 | child_cfun->has_force_vectorize_loops |= cfun->has_force_vectorize_loops; | |
1474 | cgraph_node *node = cgraph_node::get_create (child_fn); | |
1475 | node->parallelized_function = 1; | |
1476 | cgraph_node::add_new_function (child_fn, true); | |
1477 | ||
1478 | bool need_asm = DECL_ASSEMBLER_NAME_SET_P (current_function_decl) | |
1479 | && !DECL_ASSEMBLER_NAME_SET_P (child_fn); | |
1480 | ||
1481 | /* Fix the callgraph edges for child_cfun. Those for cfun will be | |
1482 | fixed in a following pass. */ | |
1483 | push_cfun (child_cfun); | |
1484 | if (need_asm) | |
9579db35 | 1485 | assign_assembler_name_if_needed (child_fn); |
629b3d75 MJ |
1486 | |
1487 | if (optimize) | |
1488 | optimize_omp_library_calls (entry_stmt); | |
fc06ae0d | 1489 | update_max_bb_count (); |
629b3d75 MJ |
1490 | cgraph_edge::rebuild_edges (); |
1491 | ||
1492 | /* Some EH regions might become dead, see PR34608. If | |
1493 | pass_cleanup_cfg isn't the first pass to happen with the | |
1494 | new child, these dead EH edges might cause problems. | |
1495 | Clean them up now. */ | |
1496 | if (flag_exceptions) | |
1497 | { | |
1498 | basic_block bb; | |
1499 | bool changed = false; | |
1500 | ||
1501 | FOR_EACH_BB_FN (bb, cfun) | |
1502 | changed |= gimple_purge_dead_eh_edges (bb); | |
1503 | if (changed) | |
1504 | cleanup_tree_cfg (); | |
1505 | } | |
1506 | if (gimple_in_ssa_p (cfun)) | |
1507 | update_ssa (TODO_update_ssa); | |
1508 | if (flag_checking && !loops_state_satisfies_p (LOOPS_NEED_FIXUP)) | |
1509 | verify_loop_structure (); | |
1510 | pop_cfun (); | |
1511 | ||
1512 | if (dump_file && !gimple_in_ssa_p (cfun)) | |
1513 | { | |
1514 | omp_any_child_fn_dumped = true; | |
1515 | dump_function_header (dump_file, child_fn, dump_flags); | |
1516 | dump_function_to_file (child_fn, dump_file, dump_flags); | |
1517 | } | |
1518 | } | |
1519 | ||
4ccc4e30 JJ |
1520 | adjust_context_and_scope (region, gimple_block (entry_stmt), child_fn); |
1521 | ||
5e9d6aa4 | 1522 | if (gimple_code (entry_stmt) == GIMPLE_OMP_PARALLEL) |
629b3d75 MJ |
1523 | expand_parallel_call (region, new_bb, |
1524 | as_a <gomp_parallel *> (entry_stmt), ws_args); | |
28567c40 JJ |
1525 | else if (gimple_code (entry_stmt) == GIMPLE_OMP_TEAMS) |
1526 | expand_teams_call (new_bb, as_a <gomp_teams *> (entry_stmt)); | |
629b3d75 MJ |
1527 | else |
1528 | expand_task_call (region, new_bb, as_a <gomp_task *> (entry_stmt)); | |
1529 | if (gimple_in_ssa_p (cfun)) | |
1530 | update_ssa (TODO_update_ssa_only_virtuals); | |
1531 | } | |
1532 | ||
1533 | /* Information about members of an OpenACC collapsed loop nest. */ | |
1534 | ||
1535 | struct oacc_collapse | |
1536 | { | |
01914336 | 1537 | tree base; /* Base value. */ |
629b3d75 | 1538 | tree iters; /* Number of steps. */ |
02889d23 CLT |
1539 | tree step; /* Step size. */ |
1540 | tree tile; /* Tile increment (if tiled). */ | |
1541 | tree outer; /* Tile iterator var. */ | |
629b3d75 MJ |
1542 | }; |
1543 | ||
1544 | /* Helper for expand_oacc_for. Determine collapsed loop information. | |
1545 | Fill in COUNTS array. Emit any initialization code before GSI. | |
1546 | Return the calculated outer loop bound of BOUND_TYPE. */ | |
1547 | ||
1548 | static tree | |
1549 | expand_oacc_collapse_init (const struct omp_for_data *fd, | |
1550 | gimple_stmt_iterator *gsi, | |
02889d23 CLT |
1551 | oacc_collapse *counts, tree bound_type, |
1552 | location_t loc) | |
629b3d75 | 1553 | { |
02889d23 | 1554 | tree tiling = fd->tiling; |
629b3d75 MJ |
1555 | tree total = build_int_cst (bound_type, 1); |
1556 | int ix; | |
1557 | ||
1558 | gcc_assert (integer_onep (fd->loop.step)); | |
1559 | gcc_assert (integer_zerop (fd->loop.n1)); | |
1560 | ||
02889d23 CLT |
1561 | /* When tiling, the first operand of the tile clause applies to the |
1562 | innermost loop, and we work outwards from there. Seems | |
1563 | backwards, but whatever. */ | |
1564 | for (ix = fd->collapse; ix--;) | |
629b3d75 MJ |
1565 | { |
1566 | const omp_for_data_loop *loop = &fd->loops[ix]; | |
1567 | ||
1568 | tree iter_type = TREE_TYPE (loop->v); | |
1569 | tree diff_type = iter_type; | |
1570 | tree plus_type = iter_type; | |
1571 | ||
1572 | gcc_assert (loop->cond_code == fd->loop.cond_code); | |
1573 | ||
1574 | if (POINTER_TYPE_P (iter_type)) | |
1575 | plus_type = sizetype; | |
1576 | if (POINTER_TYPE_P (diff_type) || TYPE_UNSIGNED (diff_type)) | |
1577 | diff_type = signed_type_for (diff_type); | |
c31bc4ac TV |
1578 | if (TYPE_PRECISION (diff_type) < TYPE_PRECISION (integer_type_node)) |
1579 | diff_type = integer_type_node; | |
629b3d75 | 1580 | |
02889d23 CLT |
1581 | if (tiling) |
1582 | { | |
1583 | tree num = build_int_cst (integer_type_node, fd->collapse); | |
1584 | tree loop_no = build_int_cst (integer_type_node, ix); | |
1585 | tree tile = TREE_VALUE (tiling); | |
1586 | gcall *call | |
1587 | = gimple_build_call_internal (IFN_GOACC_TILE, 5, num, loop_no, tile, | |
1588 | /* gwv-outer=*/integer_zero_node, | |
1589 | /* gwv-inner=*/integer_zero_node); | |
1590 | ||
1591 | counts[ix].outer = create_tmp_var (iter_type, ".outer"); | |
1592 | counts[ix].tile = create_tmp_var (diff_type, ".tile"); | |
1593 | gimple_call_set_lhs (call, counts[ix].tile); | |
1594 | gimple_set_location (call, loc); | |
1595 | gsi_insert_before (gsi, call, GSI_SAME_STMT); | |
1596 | ||
1597 | tiling = TREE_CHAIN (tiling); | |
1598 | } | |
1599 | else | |
1600 | { | |
1601 | counts[ix].tile = NULL; | |
1602 | counts[ix].outer = loop->v; | |
1603 | } | |
1604 | ||
629b3d75 MJ |
1605 | tree b = loop->n1; |
1606 | tree e = loop->n2; | |
1607 | tree s = loop->step; | |
1608 | bool up = loop->cond_code == LT_EXPR; | |
1609 | tree dir = build_int_cst (diff_type, up ? +1 : -1); | |
1610 | bool negating; | |
1611 | tree expr; | |
1612 | ||
1613 | b = force_gimple_operand_gsi (gsi, b, true, NULL_TREE, | |
1614 | true, GSI_SAME_STMT); | |
1615 | e = force_gimple_operand_gsi (gsi, e, true, NULL_TREE, | |
1616 | true, GSI_SAME_STMT); | |
1617 | ||
01914336 | 1618 | /* Convert the step, avoiding possible unsigned->signed overflow. */ |
629b3d75 MJ |
1619 | negating = !up && TYPE_UNSIGNED (TREE_TYPE (s)); |
1620 | if (negating) | |
1621 | s = fold_build1 (NEGATE_EXPR, TREE_TYPE (s), s); | |
1622 | s = fold_convert (diff_type, s); | |
1623 | if (negating) | |
1624 | s = fold_build1 (NEGATE_EXPR, diff_type, s); | |
1625 | s = force_gimple_operand_gsi (gsi, s, true, NULL_TREE, | |
1626 | true, GSI_SAME_STMT); | |
1627 | ||
01914336 | 1628 | /* Determine the range, avoiding possible unsigned->signed overflow. */ |
629b3d75 MJ |
1629 | negating = !up && TYPE_UNSIGNED (iter_type); |
1630 | expr = fold_build2 (MINUS_EXPR, plus_type, | |
1631 | fold_convert (plus_type, negating ? b : e), | |
1632 | fold_convert (plus_type, negating ? e : b)); | |
1633 | expr = fold_convert (diff_type, expr); | |
1634 | if (negating) | |
1635 | expr = fold_build1 (NEGATE_EXPR, diff_type, expr); | |
1636 | tree range = force_gimple_operand_gsi | |
1637 | (gsi, expr, true, NULL_TREE, true, GSI_SAME_STMT); | |
1638 | ||
1639 | /* Determine number of iterations. */ | |
1640 | expr = fold_build2 (MINUS_EXPR, diff_type, range, dir); | |
1641 | expr = fold_build2 (PLUS_EXPR, diff_type, expr, s); | |
1642 | expr = fold_build2 (TRUNC_DIV_EXPR, diff_type, expr, s); | |
1643 | ||
1644 | tree iters = force_gimple_operand_gsi (gsi, expr, true, NULL_TREE, | |
1645 | true, GSI_SAME_STMT); | |
1646 | ||
1647 | counts[ix].base = b; | |
1648 | counts[ix].iters = iters; | |
1649 | counts[ix].step = s; | |
1650 | ||
1651 | total = fold_build2 (MULT_EXPR, bound_type, total, | |
1652 | fold_convert (bound_type, iters)); | |
1653 | } | |
1654 | ||
1655 | return total; | |
1656 | } | |
1657 | ||
02889d23 CLT |
1658 | /* Emit initializers for collapsed loop members. INNER is true if |
1659 | this is for the element loop of a TILE. IVAR is the outer | |
629b3d75 MJ |
1660 | loop iteration variable, from which collapsed loop iteration values |
1661 | are calculated. COUNTS array has been initialized by | |
1662 | expand_oacc_collapse_inits. */ | |
1663 | ||
1664 | static void | |
02889d23 | 1665 | expand_oacc_collapse_vars (const struct omp_for_data *fd, bool inner, |
629b3d75 MJ |
1666 | gimple_stmt_iterator *gsi, |
1667 | const oacc_collapse *counts, tree ivar) | |
1668 | { | |
1669 | tree ivar_type = TREE_TYPE (ivar); | |
1670 | ||
1671 | /* The most rapidly changing iteration variable is the innermost | |
1672 | one. */ | |
1673 | for (int ix = fd->collapse; ix--;) | |
1674 | { | |
1675 | const omp_for_data_loop *loop = &fd->loops[ix]; | |
1676 | const oacc_collapse *collapse = &counts[ix]; | |
02889d23 CLT |
1677 | tree v = inner ? loop->v : collapse->outer; |
1678 | tree iter_type = TREE_TYPE (v); | |
629b3d75 MJ |
1679 | tree diff_type = TREE_TYPE (collapse->step); |
1680 | tree plus_type = iter_type; | |
1681 | enum tree_code plus_code = PLUS_EXPR; | |
1682 | tree expr; | |
1683 | ||
1684 | if (POINTER_TYPE_P (iter_type)) | |
1685 | { | |
1686 | plus_code = POINTER_PLUS_EXPR; | |
1687 | plus_type = sizetype; | |
1688 | } | |
1689 | ||
02889d23 CLT |
1690 | expr = ivar; |
1691 | if (ix) | |
1692 | { | |
1693 | tree mod = fold_convert (ivar_type, collapse->iters); | |
1694 | ivar = fold_build2 (TRUNC_DIV_EXPR, ivar_type, expr, mod); | |
1695 | expr = fold_build2 (TRUNC_MOD_EXPR, ivar_type, expr, mod); | |
1696 | ivar = force_gimple_operand_gsi (gsi, ivar, true, NULL_TREE, | |
1697 | true, GSI_SAME_STMT); | |
1698 | } | |
1699 | ||
629b3d75 MJ |
1700 | expr = fold_build2 (MULT_EXPR, diff_type, fold_convert (diff_type, expr), |
1701 | collapse->step); | |
02889d23 CLT |
1702 | expr = fold_build2 (plus_code, iter_type, |
1703 | inner ? collapse->outer : collapse->base, | |
629b3d75 MJ |
1704 | fold_convert (plus_type, expr)); |
1705 | expr = force_gimple_operand_gsi (gsi, expr, false, NULL_TREE, | |
1706 | true, GSI_SAME_STMT); | |
02889d23 | 1707 | gassign *ass = gimple_build_assign (v, expr); |
629b3d75 | 1708 | gsi_insert_before (gsi, ass, GSI_SAME_STMT); |
629b3d75 MJ |
1709 | } |
1710 | } | |
1711 | ||
1712 | /* Helper function for expand_omp_{for_*,simd}. If this is the outermost | |
1713 | of the combined collapse > 1 loop constructs, generate code like: | |
1714 | if (__builtin_expect (N32 cond3 N31, 0)) goto ZERO_ITER_BB; | |
1715 | if (cond3 is <) | |
1716 | adj = STEP3 - 1; | |
1717 | else | |
1718 | adj = STEP3 + 1; | |
1719 | count3 = (adj + N32 - N31) / STEP3; | |
1720 | if (__builtin_expect (N22 cond2 N21, 0)) goto ZERO_ITER_BB; | |
1721 | if (cond2 is <) | |
1722 | adj = STEP2 - 1; | |
1723 | else | |
1724 | adj = STEP2 + 1; | |
1725 | count2 = (adj + N22 - N21) / STEP2; | |
1726 | if (__builtin_expect (N12 cond1 N11, 0)) goto ZERO_ITER_BB; | |
1727 | if (cond1 is <) | |
1728 | adj = STEP1 - 1; | |
1729 | else | |
1730 | adj = STEP1 + 1; | |
1731 | count1 = (adj + N12 - N11) / STEP1; | |
1732 | count = count1 * count2 * count3; | |
1733 | Furthermore, if ZERO_ITER_BB is NULL, create a BB which does: | |
1734 | count = 0; | |
1735 | and set ZERO_ITER_BB to that bb. If this isn't the outermost | |
1736 | of the combined loop constructs, just initialize COUNTS array | |
aed3ab25 JJ |
1737 | from the _looptemp_ clauses. For loop nests with non-rectangular |
1738 | loops, do this only for the rectangular loops. Then pick | |
1739 | the loops which reference outer vars in their bound expressions | |
1740 | and the loops which they refer to and for this sub-nest compute | |
1741 | number of iterations. For triangular loops use Faulhaber's formula | |
1742 | (TBD.), otherwise as a fallback, compute by iterating the loops. | |
1743 | If e.g. the sub-nest is | |
1744 | for (I = N11; I COND1 N12; I += STEP1) | |
1745 | for (J = M21 * I + N21; J COND2 M22 * I + N22; J += STEP2) | |
1746 | for (K = M31 * J + N31; K COND3 M32 * J + N32; K += STEP3) | |
1747 | do: | |
1748 | COUNT = 0; | |
1749 | for (tmpi = N11; tmpi COND1 N12; tmpi += STEP1) | |
1750 | for (tmpj = M21 * tmpi + N21; | |
1751 | tmpj COND2 M22 * tmpi + N22; tmpj += STEP2) | |
1752 | { | |
1753 | int tmpk1 = M31 * tmpj + N31; | |
1754 | int tmpk2 = M32 * tmpj + N32; | |
1755 | if (tmpk1 COND3 tmpk2) | |
1756 | { | |
1757 | if (COND3 is <) | |
1758 | adj = STEP3 - 1; | |
1759 | else | |
1760 | adj = STEP3 + 1; | |
1761 | COUNT += (adj + tmpk2 - tmpk1) / STEP3; | |
1762 | } | |
1763 | } | |
1764 | and finally multiply the counts of the rectangular loops not | |
1765 | in the sub-nest with COUNT. Also, as counts[fd->last_nonrect] | |
1766 | store number of iterations of the loops from fd->first_nonrect | |
1767 | to fd->last_nonrect inclusive, i.e. the above COUNT multiplied | |
1768 | by the counts of rectangular loops not referenced in any non-rectangular | |
1769 | loops sandwitched in between those. */ | |
629b3d75 MJ |
1770 | |
1771 | /* NOTE: It *could* be better to moosh all of the BBs together, | |
1772 | creating one larger BB with all the computation and the unexpected | |
1773 | jump at the end. I.e. | |
1774 | ||
1775 | bool zero3, zero2, zero1, zero; | |
1776 | ||
1777 | zero3 = N32 c3 N31; | |
1778 | count3 = (N32 - N31) /[cl] STEP3; | |
1779 | zero2 = N22 c2 N21; | |
1780 | count2 = (N22 - N21) /[cl] STEP2; | |
1781 | zero1 = N12 c1 N11; | |
1782 | count1 = (N12 - N11) /[cl] STEP1; | |
1783 | zero = zero3 || zero2 || zero1; | |
1784 | count = count1 * count2 * count3; | |
1785 | if (__builtin_expect(zero, false)) goto zero_iter_bb; | |
1786 | ||
1787 | After all, we expect the zero=false, and thus we expect to have to | |
1788 | evaluate all of the comparison expressions, so short-circuiting | |
1789 | oughtn't be a win. Since the condition isn't protecting a | |
1790 | denominator, we're not concerned about divide-by-zero, so we can | |
1791 | fully evaluate count even if a numerator turned out to be wrong. | |
1792 | ||
1793 | It seems like putting this all together would create much better | |
1794 | scheduling opportunities, and less pressure on the chip's branch | |
1795 | predictor. */ | |
1796 | ||
1797 | static void | |
1798 | expand_omp_for_init_counts (struct omp_for_data *fd, gimple_stmt_iterator *gsi, | |
1799 | basic_block &entry_bb, tree *counts, | |
1800 | basic_block &zero_iter1_bb, int &first_zero_iter1, | |
1801 | basic_block &zero_iter2_bb, int &first_zero_iter2, | |
1802 | basic_block &l2_dom_bb) | |
1803 | { | |
1804 | tree t, type = TREE_TYPE (fd->loop.v); | |
1805 | edge e, ne; | |
1806 | int i; | |
1807 | ||
1808 | /* Collapsed loops need work for expansion into SSA form. */ | |
1809 | gcc_assert (!gimple_in_ssa_p (cfun)); | |
1810 | ||
1811 | if (gimple_omp_for_combined_into_p (fd->for_stmt) | |
1812 | && TREE_CODE (fd->loop.n2) != INTEGER_CST) | |
1813 | { | |
1814 | gcc_assert (fd->ordered == 0); | |
1815 | /* First two _looptemp_ clauses are for istart/iend, counts[0] | |
1816 | isn't supposed to be handled, as the inner loop doesn't | |
1817 | use it. */ | |
1818 | tree innerc = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), | |
1819 | OMP_CLAUSE__LOOPTEMP_); | |
1820 | gcc_assert (innerc); | |
1821 | for (i = 0; i < fd->collapse; i++) | |
1822 | { | |
1823 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
1824 | OMP_CLAUSE__LOOPTEMP_); | |
1825 | gcc_assert (innerc); | |
1826 | if (i) | |
1827 | counts[i] = OMP_CLAUSE_DECL (innerc); | |
1828 | else | |
1829 | counts[0] = NULL_TREE; | |
1830 | } | |
1831 | return; | |
1832 | } | |
1833 | ||
1834 | for (i = fd->collapse; i < fd->ordered; i++) | |
1835 | { | |
1836 | tree itype = TREE_TYPE (fd->loops[i].v); | |
1837 | counts[i] = NULL_TREE; | |
1838 | t = fold_binary (fd->loops[i].cond_code, boolean_type_node, | |
1839 | fold_convert (itype, fd->loops[i].n1), | |
1840 | fold_convert (itype, fd->loops[i].n2)); | |
1841 | if (t && integer_zerop (t)) | |
1842 | { | |
1843 | for (i = fd->collapse; i < fd->ordered; i++) | |
1844 | counts[i] = build_int_cst (type, 0); | |
1845 | break; | |
1846 | } | |
1847 | } | |
aed3ab25 | 1848 | bool rect_count_seen = false; |
629b3d75 MJ |
1849 | for (i = 0; i < (fd->ordered ? fd->ordered : fd->collapse); i++) |
1850 | { | |
1851 | tree itype = TREE_TYPE (fd->loops[i].v); | |
1852 | ||
1853 | if (i >= fd->collapse && counts[i]) | |
1854 | continue; | |
aed3ab25 JJ |
1855 | if (fd->non_rect) |
1856 | { | |
1857 | /* Skip loops that use outer iterators in their expressions | |
1858 | during this phase. */ | |
1859 | if (fd->loops[i].m1 || fd->loops[i].m2) | |
1860 | { | |
1861 | counts[i] = build_zero_cst (type); | |
1862 | continue; | |
1863 | } | |
1864 | } | |
629b3d75 MJ |
1865 | if ((SSA_VAR_P (fd->loop.n2) || i >= fd->collapse) |
1866 | && ((t = fold_binary (fd->loops[i].cond_code, boolean_type_node, | |
1867 | fold_convert (itype, fd->loops[i].n1), | |
1868 | fold_convert (itype, fd->loops[i].n2))) | |
1869 | == NULL_TREE || !integer_onep (t))) | |
1870 | { | |
1871 | gcond *cond_stmt; | |
1872 | tree n1, n2; | |
1873 | n1 = fold_convert (itype, unshare_expr (fd->loops[i].n1)); | |
1874 | n1 = force_gimple_operand_gsi (gsi, n1, true, NULL_TREE, | |
1875 | true, GSI_SAME_STMT); | |
1876 | n2 = fold_convert (itype, unshare_expr (fd->loops[i].n2)); | |
1877 | n2 = force_gimple_operand_gsi (gsi, n2, true, NULL_TREE, | |
1878 | true, GSI_SAME_STMT); | |
1879 | cond_stmt = gimple_build_cond (fd->loops[i].cond_code, n1, n2, | |
1880 | NULL_TREE, NULL_TREE); | |
1881 | gsi_insert_before (gsi, cond_stmt, GSI_SAME_STMT); | |
1882 | if (walk_tree (gimple_cond_lhs_ptr (cond_stmt), | |
1883 | expand_omp_regimplify_p, NULL, NULL) | |
1884 | || walk_tree (gimple_cond_rhs_ptr (cond_stmt), | |
1885 | expand_omp_regimplify_p, NULL, NULL)) | |
1886 | { | |
1887 | *gsi = gsi_for_stmt (cond_stmt); | |
1888 | gimple_regimplify_operands (cond_stmt, gsi); | |
1889 | } | |
1890 | e = split_block (entry_bb, cond_stmt); | |
1891 | basic_block &zero_iter_bb | |
1892 | = i < fd->collapse ? zero_iter1_bb : zero_iter2_bb; | |
1893 | int &first_zero_iter | |
1894 | = i < fd->collapse ? first_zero_iter1 : first_zero_iter2; | |
1895 | if (zero_iter_bb == NULL) | |
1896 | { | |
1897 | gassign *assign_stmt; | |
1898 | first_zero_iter = i; | |
1899 | zero_iter_bb = create_empty_bb (entry_bb); | |
1900 | add_bb_to_loop (zero_iter_bb, entry_bb->loop_father); | |
1901 | *gsi = gsi_after_labels (zero_iter_bb); | |
1902 | if (i < fd->collapse) | |
1903 | assign_stmt = gimple_build_assign (fd->loop.n2, | |
1904 | build_zero_cst (type)); | |
1905 | else | |
1906 | { | |
1907 | counts[i] = create_tmp_reg (type, ".count"); | |
1908 | assign_stmt | |
1909 | = gimple_build_assign (counts[i], build_zero_cst (type)); | |
1910 | } | |
1911 | gsi_insert_before (gsi, assign_stmt, GSI_SAME_STMT); | |
1912 | set_immediate_dominator (CDI_DOMINATORS, zero_iter_bb, | |
1913 | entry_bb); | |
1914 | } | |
1915 | ne = make_edge (entry_bb, zero_iter_bb, EDGE_FALSE_VALUE); | |
357067f2 | 1916 | ne->probability = profile_probability::very_unlikely (); |
629b3d75 | 1917 | e->flags = EDGE_TRUE_VALUE; |
357067f2 | 1918 | e->probability = ne->probability.invert (); |
629b3d75 MJ |
1919 | if (l2_dom_bb == NULL) |
1920 | l2_dom_bb = entry_bb; | |
1921 | entry_bb = e->dest; | |
65f4b875 | 1922 | *gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
1923 | } |
1924 | ||
1925 | if (POINTER_TYPE_P (itype)) | |
1926 | itype = signed_type_for (itype); | |
1927 | t = build_int_cst (itype, (fd->loops[i].cond_code == LT_EXPR | |
1928 | ? -1 : 1)); | |
1929 | t = fold_build2 (PLUS_EXPR, itype, | |
1930 | fold_convert (itype, fd->loops[i].step), t); | |
1931 | t = fold_build2 (PLUS_EXPR, itype, t, | |
1932 | fold_convert (itype, fd->loops[i].n2)); | |
1933 | t = fold_build2 (MINUS_EXPR, itype, t, | |
1934 | fold_convert (itype, fd->loops[i].n1)); | |
1935 | /* ?? We could probably use CEIL_DIV_EXPR instead of | |
1936 | TRUNC_DIV_EXPR and adjusting by hand. Unless we can't | |
1937 | generate the same code in the end because generically we | |
1938 | don't know that the values involved must be negative for | |
1939 | GT?? */ | |
1940 | if (TYPE_UNSIGNED (itype) && fd->loops[i].cond_code == GT_EXPR) | |
1941 | t = fold_build2 (TRUNC_DIV_EXPR, itype, | |
1942 | fold_build1 (NEGATE_EXPR, itype, t), | |
1943 | fold_build1 (NEGATE_EXPR, itype, | |
1944 | fold_convert (itype, | |
1945 | fd->loops[i].step))); | |
1946 | else | |
1947 | t = fold_build2 (TRUNC_DIV_EXPR, itype, t, | |
1948 | fold_convert (itype, fd->loops[i].step)); | |
1949 | t = fold_convert (type, t); | |
1950 | if (TREE_CODE (t) == INTEGER_CST) | |
1951 | counts[i] = t; | |
1952 | else | |
1953 | { | |
1954 | if (i < fd->collapse || i != first_zero_iter2) | |
1955 | counts[i] = create_tmp_reg (type, ".count"); | |
1956 | expand_omp_build_assign (gsi, counts[i], t); | |
1957 | } | |
1958 | if (SSA_VAR_P (fd->loop.n2) && i < fd->collapse) | |
1959 | { | |
aed3ab25 JJ |
1960 | if (fd->non_rect && i >= fd->first_nonrect && i <= fd->last_nonrect) |
1961 | continue; | |
1962 | if (!rect_count_seen) | |
1963 | { | |
1964 | t = counts[i]; | |
1965 | rect_count_seen = true; | |
1966 | } | |
629b3d75 MJ |
1967 | else |
1968 | t = fold_build2 (MULT_EXPR, type, fd->loop.n2, counts[i]); | |
1969 | expand_omp_build_assign (gsi, fd->loop.n2, t); | |
1970 | } | |
1971 | } | |
aed3ab25 JJ |
1972 | if (fd->non_rect && SSA_VAR_P (fd->loop.n2)) |
1973 | { | |
1974 | gcc_assert (fd->last_nonrect != -1); | |
1975 | ||
1976 | /* Fallback implementation. Evaluate the loops with m1/m2 | |
1977 | non-NULL as well as their outer loops at runtime using temporaries | |
1978 | instead of the original iteration variables, and in the | |
1979 | body just bump the counter. */ | |
1980 | counts[fd->last_nonrect] = create_tmp_reg (type, ".count"); | |
1981 | expand_omp_build_assign (gsi, counts[fd->last_nonrect], | |
1982 | build_zero_cst (type)); | |
1983 | gimple_stmt_iterator gsi2 = *gsi; | |
1984 | gsi_prev (&gsi2); | |
1985 | e = split_block (entry_bb, gsi_stmt (gsi2)); | |
1986 | e = split_block (e->dest, (gimple *) NULL); | |
1987 | basic_block cur_bb = e->src; | |
1988 | basic_block next_bb = e->dest; | |
1989 | entry_bb = e->dest; | |
1990 | *gsi = gsi_after_labels (entry_bb); | |
1991 | ||
1992 | tree *vs = XALLOCAVEC (tree, fd->last_nonrect); | |
1993 | memset (vs, 0, fd->last_nonrect * sizeof (tree)); | |
1994 | ||
1995 | for (i = 0; i <= fd->last_nonrect; i++) | |
1996 | { | |
1997 | if (fd->loops[i].m1 == NULL_TREE | |
1998 | && fd->loops[i].m2 == NULL_TREE | |
1999 | && !fd->loops[i].non_rect_referenced) | |
2000 | continue; | |
2001 | ||
2002 | tree itype = TREE_TYPE (fd->loops[i].v); | |
2003 | ||
2004 | gsi2 = gsi_after_labels (cur_bb); | |
2005 | tree n1, n2; | |
2006 | t = fold_convert (itype, unshare_expr (fd->loops[i].n1)); | |
2007 | if (fd->loops[i].m1) | |
2008 | { | |
2009 | n1 = fold_convert (itype, unshare_expr (fd->loops[i].m1)); | |
2010 | n1 = fold_build2 (MULT_EXPR, itype, vs[i - fd->loops[i].outer], | |
2011 | n1); | |
2012 | n1 = fold_build2 (PLUS_EXPR, itype, n1, t); | |
2013 | } | |
2014 | else | |
2015 | n1 = t; | |
2016 | n1 = force_gimple_operand_gsi (&gsi2, n1, true, NULL_TREE, | |
2017 | true, GSI_SAME_STMT); | |
2018 | if (i < fd->last_nonrect) | |
2019 | { | |
2020 | vs[i] = create_tmp_reg (itype, ".it"); | |
2021 | expand_omp_build_assign (&gsi2, vs[i], n1); | |
2022 | } | |
2023 | t = fold_convert (itype, unshare_expr (fd->loops[i].n2)); | |
2024 | if (fd->loops[i].m2) | |
2025 | { | |
2026 | n2 = fold_convert (itype, unshare_expr (fd->loops[i].m2)); | |
2027 | n2 = fold_build2 (MULT_EXPR, itype, vs[i - fd->loops[i].outer], | |
2028 | n2); | |
2029 | n2 = fold_build2 (PLUS_EXPR, itype, n2, t); | |
2030 | } | |
2031 | else | |
2032 | n2 = t; | |
2033 | n2 = force_gimple_operand_gsi (&gsi2, n2, true, NULL_TREE, | |
2034 | true, GSI_SAME_STMT); | |
2035 | if (i == fd->last_nonrect) | |
2036 | { | |
2037 | gcond *cond_stmt | |
2038 | = gimple_build_cond (fd->loops[i].cond_code, n1, n2, | |
2039 | NULL_TREE, NULL_TREE); | |
2040 | gsi_insert_before (&gsi2, cond_stmt, GSI_SAME_STMT); | |
2041 | e = split_block (cur_bb, cond_stmt); | |
2042 | e->flags = EDGE_TRUE_VALUE; | |
2043 | ne = make_edge (cur_bb, next_bb, EDGE_FALSE_VALUE); | |
2044 | e->probability = profile_probability::likely ().guessed (); | |
2045 | ne->probability = e->probability.invert (); | |
2046 | gsi2 = gsi_after_labels (e->dest); | |
2047 | ||
2048 | t = build_int_cst (itype, (fd->loops[i].cond_code == LT_EXPR | |
2049 | ? -1 : 1)); | |
2050 | t = fold_build2 (PLUS_EXPR, itype, | |
2051 | fold_convert (itype, fd->loops[i].step), t); | |
2052 | t = fold_build2 (PLUS_EXPR, itype, t, n2); | |
2053 | t = fold_build2 (MINUS_EXPR, itype, t, n1); | |
2054 | tree step = fold_convert (itype, fd->loops[i].step); | |
2055 | if (TYPE_UNSIGNED (itype) && fd->loops[i].cond_code == GT_EXPR) | |
2056 | t = fold_build2 (TRUNC_DIV_EXPR, itype, | |
2057 | fold_build1 (NEGATE_EXPR, itype, t), | |
2058 | fold_build1 (NEGATE_EXPR, itype, step)); | |
2059 | else | |
2060 | t = fold_build2 (TRUNC_DIV_EXPR, itype, t, step); | |
2061 | t = fold_convert (type, t); | |
2062 | t = fold_build2 (PLUS_EXPR, type, counts[fd->last_nonrect], t); | |
2063 | t = force_gimple_operand_gsi (&gsi2, t, true, NULL_TREE, | |
2064 | true, GSI_SAME_STMT); | |
2065 | expand_omp_build_assign (&gsi2, counts[fd->last_nonrect], t); | |
2066 | e = make_edge (e->dest, next_bb, EDGE_FALLTHRU); | |
2067 | set_immediate_dominator (CDI_DOMINATORS, next_bb, cur_bb); | |
2068 | break; | |
2069 | } | |
2070 | e = split_block (cur_bb, last_stmt (cur_bb)); | |
2071 | ||
2072 | basic_block new_cur_bb = create_empty_bb (cur_bb); | |
2073 | add_bb_to_loop (new_cur_bb, cur_bb->loop_father); | |
2074 | ||
2075 | gsi2 = gsi_after_labels (e->dest); | |
2076 | tree step = fold_convert (itype, unshare_expr (fd->loops[i].step)); | |
2077 | t = fold_build2 (PLUS_EXPR, itype, vs[i], step); | |
2078 | t = force_gimple_operand_gsi (&gsi2, t, true, NULL_TREE, | |
2079 | true, GSI_SAME_STMT); | |
2080 | expand_omp_build_assign (&gsi2, vs[i], t); | |
2081 | ||
2082 | ne = split_block (e->dest, last_stmt (e->dest)); | |
2083 | gsi2 = gsi_after_labels (ne->dest); | |
2084 | ||
2085 | gcond *cond_stmt | |
2086 | = gimple_build_cond (fd->loops[i].cond_code, vs[i], n2, | |
2087 | NULL_TREE, NULL_TREE); | |
2088 | gsi_insert_before (&gsi2, cond_stmt, GSI_SAME_STMT); | |
2089 | edge e3, e4; | |
2090 | if (next_bb == entry_bb) | |
2091 | { | |
2092 | e3 = find_edge (ne->dest, next_bb); | |
2093 | e3->flags = EDGE_FALSE_VALUE; | |
2094 | } | |
2095 | else | |
2096 | e3 = make_edge (ne->dest, next_bb, EDGE_FALSE_VALUE); | |
2097 | e4 = make_edge (ne->dest, new_cur_bb, EDGE_TRUE_VALUE); | |
2098 | e4->probability = profile_probability::likely ().guessed (); | |
2099 | e3->probability = e4->probability.invert (); | |
2100 | basic_block esrc = e->src; | |
2101 | make_edge (e->src, ne->dest, EDGE_FALLTHRU); | |
2102 | cur_bb = new_cur_bb; | |
2103 | basic_block latch_bb = next_bb; | |
2104 | next_bb = e->dest; | |
2105 | remove_edge (e); | |
2106 | set_immediate_dominator (CDI_DOMINATORS, ne->dest, esrc); | |
2107 | set_immediate_dominator (CDI_DOMINATORS, latch_bb, ne->dest); | |
2108 | set_immediate_dominator (CDI_DOMINATORS, cur_bb, ne->dest); | |
2109 | } | |
2110 | t = NULL_TREE; | |
2111 | for (i = fd->first_nonrect; i < fd->last_nonrect; i++) | |
2112 | if (!fd->loops[i].non_rect_referenced | |
2113 | && fd->loops[i].m1 == NULL_TREE | |
2114 | && fd->loops[i].m2 == NULL_TREE) | |
2115 | { | |
2116 | if (t == NULL_TREE) | |
2117 | t = counts[i]; | |
2118 | else | |
2119 | t = fold_build2 (MULT_EXPR, type, t, counts[i]); | |
2120 | } | |
2121 | if (t) | |
2122 | { | |
2123 | t = fold_build2 (MULT_EXPR, type, counts[fd->last_nonrect], t); | |
2124 | expand_omp_build_assign (gsi, counts[fd->last_nonrect], t); | |
2125 | } | |
2126 | if (!rect_count_seen) | |
2127 | t = counts[fd->last_nonrect]; | |
2128 | else | |
2129 | t = fold_build2 (MULT_EXPR, type, fd->loop.n2, | |
2130 | counts[fd->last_nonrect]); | |
2131 | expand_omp_build_assign (gsi, fd->loop.n2, t); | |
2132 | } | |
2133 | else if (fd->non_rect) | |
2134 | { | |
2135 | tree t = fd->loop.n2; | |
2136 | gcc_assert (TREE_CODE (t) == INTEGER_CST); | |
2137 | int non_rect_referenced = 0, non_rect = 0; | |
2138 | for (i = 0; i < fd->collapse; i++) | |
2139 | { | |
5acef69f | 2140 | if ((i < fd->first_nonrect || i > fd->last_nonrect) |
aed3ab25 JJ |
2141 | && !integer_zerop (counts[i])) |
2142 | t = fold_build2 (TRUNC_DIV_EXPR, type, t, counts[i]); | |
2143 | if (fd->loops[i].non_rect_referenced) | |
2144 | non_rect_referenced++; | |
2145 | if (fd->loops[i].m1 || fd->loops[i].m2) | |
2146 | non_rect++; | |
2147 | } | |
2148 | gcc_assert (non_rect == 1 && non_rect_referenced == 1); | |
2149 | counts[fd->last_nonrect] = t; | |
2150 | } | |
629b3d75 MJ |
2151 | } |
2152 | ||
2153 | /* Helper function for expand_omp_{for_*,simd}. Generate code like: | |
2154 | T = V; | |
2155 | V3 = N31 + (T % count3) * STEP3; | |
2156 | T = T / count3; | |
2157 | V2 = N21 + (T % count2) * STEP2; | |
2158 | T = T / count2; | |
2159 | V1 = N11 + T * STEP1; | |
2160 | if this loop doesn't have an inner loop construct combined with it. | |
2161 | If it does have an inner loop construct combined with it and the | |
2162 | iteration count isn't known constant, store values from counts array | |
aed3ab25 JJ |
2163 | into its _looptemp_ temporaries instead. |
2164 | For non-rectangular loops (between fd->first_nonrect and fd->last_nonrect | |
2165 | inclusive), use the count of all those loops together, and either | |
2166 | find quadratic etc. equation roots (TBD), or as a fallback, do: | |
2167 | COUNT = 0; | |
2168 | for (tmpi = N11; tmpi COND1 N12; tmpi += STEP1) | |
2169 | for (tmpj = M21 * tmpi + N21; | |
2170 | tmpj COND2 M22 * tmpi + N22; tmpj += STEP2) | |
2171 | { | |
2172 | int tmpk1 = M31 * tmpj + N31; | |
2173 | int tmpk2 = M32 * tmpj + N32; | |
2174 | if (tmpk1 COND3 tmpk2) | |
2175 | { | |
2176 | if (COND3 is <) | |
2177 | adj = STEP3 - 1; | |
2178 | else | |
2179 | adj = STEP3 + 1; | |
2180 | int temp = (adj + tmpk2 - tmpk1) / STEP3; | |
2181 | if (COUNT + temp > T) | |
2182 | { | |
2183 | V1 = tmpi; | |
2184 | V2 = tmpj; | |
2185 | V3 = tmpk1 + (T - COUNT) * STEP3; | |
2186 | goto done; | |
2187 | } | |
2188 | else | |
2189 | COUNT += temp; | |
2190 | } | |
2191 | } | |
2192 | done:; | |
2193 | but for optional innermost or outermost rectangular loops that aren't | |
2194 | referenced by other loop expressions keep doing the division/modulo. */ | |
629b3d75 MJ |
2195 | |
2196 | static void | |
2197 | expand_omp_for_init_vars (struct omp_for_data *fd, gimple_stmt_iterator *gsi, | |
aed3ab25 JJ |
2198 | tree *counts, tree *nonrect_bounds, |
2199 | gimple *inner_stmt, tree startvar) | |
629b3d75 MJ |
2200 | { |
2201 | int i; | |
2202 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
2203 | { | |
2204 | /* If fd->loop.n2 is constant, then no propagation of the counts | |
2205 | is needed, they are constant. */ | |
2206 | if (TREE_CODE (fd->loop.n2) == INTEGER_CST) | |
2207 | return; | |
2208 | ||
2209 | tree clauses = gimple_code (inner_stmt) != GIMPLE_OMP_FOR | |
2210 | ? gimple_omp_taskreg_clauses (inner_stmt) | |
2211 | : gimple_omp_for_clauses (inner_stmt); | |
2212 | /* First two _looptemp_ clauses are for istart/iend, counts[0] | |
2213 | isn't supposed to be handled, as the inner loop doesn't | |
2214 | use it. */ | |
2215 | tree innerc = omp_find_clause (clauses, OMP_CLAUSE__LOOPTEMP_); | |
2216 | gcc_assert (innerc); | |
2217 | for (i = 0; i < fd->collapse; i++) | |
2218 | { | |
2219 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
2220 | OMP_CLAUSE__LOOPTEMP_); | |
2221 | gcc_assert (innerc); | |
2222 | if (i) | |
2223 | { | |
2224 | tree tem = OMP_CLAUSE_DECL (innerc); | |
2225 | tree t = fold_convert (TREE_TYPE (tem), counts[i]); | |
2226 | t = force_gimple_operand_gsi (gsi, t, false, NULL_TREE, | |
2227 | false, GSI_CONTINUE_LINKING); | |
2228 | gassign *stmt = gimple_build_assign (tem, t); | |
2229 | gsi_insert_after (gsi, stmt, GSI_CONTINUE_LINKING); | |
2230 | } | |
2231 | } | |
2232 | return; | |
2233 | } | |
2234 | ||
2235 | tree type = TREE_TYPE (fd->loop.v); | |
2236 | tree tem = create_tmp_reg (type, ".tem"); | |
2237 | gassign *stmt = gimple_build_assign (tem, startvar); | |
2238 | gsi_insert_after (gsi, stmt, GSI_CONTINUE_LINKING); | |
2239 | ||
2240 | for (i = fd->collapse - 1; i >= 0; i--) | |
2241 | { | |
2242 | tree vtype = TREE_TYPE (fd->loops[i].v), itype, t; | |
2243 | itype = vtype; | |
2244 | if (POINTER_TYPE_P (vtype)) | |
2245 | itype = signed_type_for (vtype); | |
aed3ab25 | 2246 | if (i != 0 && (i != fd->last_nonrect || fd->first_nonrect)) |
629b3d75 MJ |
2247 | t = fold_build2 (TRUNC_MOD_EXPR, type, tem, counts[i]); |
2248 | else | |
2249 | t = tem; | |
aed3ab25 JJ |
2250 | if (i == fd->last_nonrect) |
2251 | { | |
aed3ab25 JJ |
2252 | t = force_gimple_operand_gsi (gsi, t, true, NULL_TREE, |
2253 | false, GSI_CONTINUE_LINKING); | |
2254 | tree stopval = t; | |
2255 | tree idx = create_tmp_reg (type, ".count"); | |
2256 | expand_omp_build_assign (gsi, idx, | |
2257 | build_zero_cst (type), true); | |
5acef69f JJ |
2258 | basic_block bb_triang = NULL; |
2259 | if (fd->first_nonrect + 1 == fd->last_nonrect | |
2260 | /* For now. */ | |
2261 | && TREE_CODE (fd->loop.n2) == INTEGER_CST | |
2262 | && (optab_handler (sqrt_optab, TYPE_MODE (double_type_node)) | |
2263 | != CODE_FOR_nothing)) | |
2264 | { | |
f418bd4b | 2265 | tree outer_n1 = fd->adjn1 ? fd->adjn1 : fd->loops[i - 1].n1; |
5acef69f JJ |
2266 | tree itype = TREE_TYPE (fd->loops[i].v); |
2267 | tree min_inner_iterations = fd->min_inner_iterations; | |
2268 | tree factor = fd->factor; | |
2269 | gcond *cond_stmt | |
2270 | = gimple_build_cond (NE_EXPR, factor, | |
2271 | build_zero_cst (TREE_TYPE (factor)), | |
2272 | NULL_TREE, NULL_TREE); | |
2273 | gsi_insert_after (gsi, cond_stmt, GSI_CONTINUE_LINKING); | |
2274 | edge e = split_block (gsi_bb (*gsi), cond_stmt); | |
2275 | basic_block bb0 = e->src; | |
2276 | e->flags = EDGE_TRUE_VALUE; | |
2277 | e->probability = profile_probability::likely (); | |
2278 | *gsi = gsi_after_labels (e->dest); | |
2279 | tree slltype = long_long_integer_type_node; | |
2280 | tree ulltype = long_long_unsigned_type_node; | |
2281 | tree stopvalull = fold_convert (ulltype, stopval); | |
2282 | stopvalull | |
2283 | = force_gimple_operand_gsi (gsi, stopvalull, true, NULL_TREE, | |
2284 | false, GSI_CONTINUE_LINKING); | |
2285 | min_inner_iterations | |
2286 | = fold_convert (slltype, min_inner_iterations); | |
2287 | min_inner_iterations | |
2288 | = force_gimple_operand_gsi (gsi, min_inner_iterations, true, | |
2289 | NULL_TREE, false, | |
2290 | GSI_CONTINUE_LINKING); | |
2291 | factor = fold_convert (slltype, factor); | |
2292 | factor | |
2293 | = force_gimple_operand_gsi (gsi, factor, true, NULL_TREE, | |
2294 | false, GSI_CONTINUE_LINKING); | |
2295 | tree min_inner_iterationsd | |
2296 | = fold_build1 (FLOAT_EXPR, double_type_node, | |
2297 | min_inner_iterations); | |
2298 | min_inner_iterationsd | |
2299 | = force_gimple_operand_gsi (gsi, min_inner_iterationsd, true, | |
2300 | NULL_TREE, false, | |
2301 | GSI_CONTINUE_LINKING); | |
2302 | tree factord = fold_build1 (FLOAT_EXPR, double_type_node, | |
2303 | factor); | |
2304 | factord = force_gimple_operand_gsi (gsi, factord, true, | |
2305 | NULL_TREE, false, | |
2306 | GSI_CONTINUE_LINKING); | |
2307 | tree stopvald = fold_build1 (FLOAT_EXPR, double_type_node, | |
2308 | stopvalull); | |
2309 | stopvald = force_gimple_operand_gsi (gsi, stopvald, true, | |
2310 | NULL_TREE, false, | |
2311 | GSI_CONTINUE_LINKING); | |
2312 | /* Temporarily disable flag_rounding_math, values will be | |
2313 | decimal numbers divided by 2 and worst case imprecisions | |
2314 | due to too large values ought to be caught later by the | |
2315 | checks for fallback. */ | |
2316 | int save_flag_rounding_math = flag_rounding_math; | |
2317 | flag_rounding_math = 0; | |
2318 | t = fold_build2 (RDIV_EXPR, double_type_node, factord, | |
2319 | build_real (double_type_node, dconst2)); | |
2320 | tree t3 = fold_build2 (MINUS_EXPR, double_type_node, | |
2321 | min_inner_iterationsd, t); | |
2322 | t3 = force_gimple_operand_gsi (gsi, t3, true, NULL_TREE, false, | |
2323 | GSI_CONTINUE_LINKING); | |
2324 | t = fold_build2 (MULT_EXPR, double_type_node, factord, | |
2325 | build_real (double_type_node, dconst2)); | |
2326 | t = fold_build2 (MULT_EXPR, double_type_node, t, stopvald); | |
2327 | t = fold_build2 (PLUS_EXPR, double_type_node, t, | |
2328 | fold_build2 (MULT_EXPR, double_type_node, | |
2329 | t3, t3)); | |
2330 | flag_rounding_math = save_flag_rounding_math; | |
2331 | t = force_gimple_operand_gsi (gsi, t, true, NULL_TREE, false, | |
2332 | GSI_CONTINUE_LINKING); | |
2333 | cond_stmt | |
2334 | = gimple_build_cond (LT_EXPR, t, | |
2335 | build_zero_cst (double_type_node), | |
2336 | NULL_TREE, NULL_TREE); | |
2337 | gsi_insert_after (gsi, cond_stmt, GSI_CONTINUE_LINKING); | |
2338 | e = split_block (gsi_bb (*gsi), cond_stmt); | |
2339 | basic_block bb1 = e->src; | |
2340 | e->flags = EDGE_FALSE_VALUE; | |
2341 | e->probability = profile_probability::very_likely (); | |
2342 | *gsi = gsi_after_labels (e->dest); | |
2343 | gcall *call = gimple_build_call_internal (IFN_SQRT, 1, t); | |
2344 | tree sqrtr = create_tmp_var (double_type_node); | |
2345 | gimple_call_set_lhs (call, sqrtr); | |
2346 | gsi_insert_after (gsi, call, GSI_CONTINUE_LINKING); | |
2347 | t = fold_build2 (MINUS_EXPR, double_type_node, sqrtr, t3); | |
2348 | t = fold_build2 (RDIV_EXPR, double_type_node, t, factord); | |
2349 | t = fold_build1 (FIX_TRUNC_EXPR, ulltype, t); | |
2350 | tree c = create_tmp_var (ulltype); | |
2351 | tree d = create_tmp_var (ulltype); | |
2352 | expand_omp_build_assign (gsi, c, t, true); | |
2353 | t = fold_build2 (MINUS_EXPR, ulltype, c, | |
2354 | build_one_cst (ulltype)); | |
2355 | t = fold_build2 (MULT_EXPR, ulltype, c, t); | |
2356 | t = fold_build2 (RSHIFT_EXPR, ulltype, t, integer_one_node); | |
2357 | t = fold_build2 (MULT_EXPR, ulltype, fd->factor, t); | |
2358 | tree t2 = fold_build2 (MULT_EXPR, ulltype, c, | |
2359 | fd->min_inner_iterations); | |
2360 | t = fold_build2 (PLUS_EXPR, ulltype, t, t2); | |
2361 | expand_omp_build_assign (gsi, d, t, true); | |
2362 | t = fold_build2 (MULT_EXPR, ulltype, fd->factor, c); | |
2363 | t = fold_build2 (PLUS_EXPR, ulltype, | |
2364 | t, fd->min_inner_iterations); | |
2365 | t2 = force_gimple_operand_gsi (gsi, t, true, NULL_TREE, false, | |
2366 | GSI_CONTINUE_LINKING); | |
2367 | cond_stmt = gimple_build_cond (GE_EXPR, stopvalull, d, | |
2368 | NULL_TREE, NULL_TREE); | |
2369 | gsi_insert_after (gsi, cond_stmt, GSI_CONTINUE_LINKING); | |
2370 | e = split_block (gsi_bb (*gsi), cond_stmt); | |
2371 | basic_block bb2 = e->src; | |
2372 | e->flags = EDGE_TRUE_VALUE; | |
2373 | e->probability = profile_probability::very_likely (); | |
2374 | *gsi = gsi_after_labels (e->dest); | |
2375 | t = fold_build2 (PLUS_EXPR, ulltype, d, t2); | |
2376 | t = force_gimple_operand_gsi (gsi, t, true, NULL_TREE, false, | |
2377 | GSI_CONTINUE_LINKING); | |
2378 | cond_stmt = gimple_build_cond (GE_EXPR, stopvalull, t, | |
2379 | NULL_TREE, NULL_TREE); | |
2380 | gsi_insert_after (gsi, cond_stmt, GSI_CONTINUE_LINKING); | |
2381 | e = split_block (gsi_bb (*gsi), cond_stmt); | |
2382 | basic_block bb3 = e->src; | |
2383 | e->flags = EDGE_FALSE_VALUE; | |
2384 | e->probability = profile_probability::very_likely (); | |
2385 | *gsi = gsi_after_labels (e->dest); | |
2386 | t = fold_convert (itype, c); | |
2387 | t = fold_build2 (MULT_EXPR, itype, t, fd->loops[i - 1].step); | |
f418bd4b | 2388 | t = fold_build2 (PLUS_EXPR, itype, outer_n1, t); |
5acef69f JJ |
2389 | t = force_gimple_operand_gsi (gsi, t, true, NULL_TREE, false, |
2390 | GSI_CONTINUE_LINKING); | |
2391 | expand_omp_build_assign (gsi, fd->loops[i - 1].v, t, true); | |
2392 | t2 = fold_build2 (MINUS_EXPR, ulltype, stopvalull, d); | |
2393 | t2 = fold_convert (itype, t2); | |
2394 | t2 = fold_build2 (MULT_EXPR, itype, t2, fd->loops[i].step); | |
2395 | t2 = fold_build2 (PLUS_EXPR, itype, t2, fd->loops[i].n1); | |
2396 | if (fd->loops[i].m1) | |
2397 | { | |
2398 | t = fold_build2 (MULT_EXPR, itype, t, fd->loops[i].m1); | |
2399 | t2 = fold_build2 (PLUS_EXPR, itype, t2, t); | |
2400 | } | |
2401 | expand_omp_build_assign (gsi, fd->loops[i].v, t2, true); | |
2402 | e = split_block (gsi_bb (*gsi), gsi_stmt (*gsi)); | |
2403 | bb_triang = e->src; | |
2404 | *gsi = gsi_after_labels (e->dest); | |
2405 | remove_edge (e); | |
2406 | e = make_edge (bb1, gsi_bb (*gsi), EDGE_TRUE_VALUE); | |
2407 | e->probability = profile_probability::very_unlikely (); | |
2408 | e = make_edge (bb2, gsi_bb (*gsi), EDGE_FALSE_VALUE); | |
2409 | e->probability = profile_probability::very_unlikely (); | |
2410 | e = make_edge (bb3, gsi_bb (*gsi), EDGE_TRUE_VALUE); | |
2411 | e->probability = profile_probability::very_unlikely (); | |
2412 | ||
2413 | basic_block bb4 = create_empty_bb (bb0); | |
2414 | add_bb_to_loop (bb4, bb0->loop_father); | |
2415 | e = make_edge (bb0, bb4, EDGE_FALSE_VALUE); | |
2416 | e->probability = profile_probability::unlikely (); | |
2417 | make_edge (bb4, gsi_bb (*gsi), EDGE_FALLTHRU); | |
2418 | set_immediate_dominator (CDI_DOMINATORS, bb4, bb0); | |
2419 | set_immediate_dominator (CDI_DOMINATORS, gsi_bb (*gsi), bb0); | |
2420 | gimple_stmt_iterator gsi2 = gsi_after_labels (bb4); | |
2421 | t2 = fold_build2 (TRUNC_DIV_EXPR, type, | |
2422 | counts[i], counts[i - 1]); | |
2423 | t2 = force_gimple_operand_gsi (&gsi2, t2, true, NULL_TREE, false, | |
2424 | GSI_CONTINUE_LINKING); | |
2425 | t = fold_build2 (TRUNC_MOD_EXPR, type, stopval, t2); | |
2426 | t2 = fold_build2 (TRUNC_DIV_EXPR, type, stopval, t2); | |
2427 | t = fold_convert (itype, t); | |
2428 | t2 = fold_convert (itype, t2); | |
2429 | t = fold_build2 (MULT_EXPR, itype, t, | |
2430 | fold_convert (itype, fd->loops[i].step)); | |
2431 | t = fold_build2 (PLUS_EXPR, itype, fd->loops[i].n1, t); | |
2432 | t2 = fold_build2 (MULT_EXPR, itype, t2, | |
2433 | fold_convert (itype, fd->loops[i - 1].step)); | |
2434 | t2 = fold_build2 (PLUS_EXPR, itype, fd->loops[i - 1].n1, t2); | |
2435 | t2 = force_gimple_operand_gsi (&gsi2, t2, false, NULL_TREE, | |
2436 | false, GSI_CONTINUE_LINKING); | |
2437 | stmt = gimple_build_assign (fd->loops[i - 1].v, t2); | |
2438 | gsi_insert_after (&gsi2, stmt, GSI_CONTINUE_LINKING); | |
2439 | if (fd->loops[i].m1) | |
2440 | { | |
2441 | t2 = fold_build2 (MULT_EXPR, itype, fd->loops[i].m1, | |
2442 | fd->loops[i - 1].v); | |
2443 | t = fold_build2 (PLUS_EXPR, itype, t, t2); | |
2444 | } | |
2445 | t = force_gimple_operand_gsi (&gsi2, t, false, NULL_TREE, | |
2446 | false, GSI_CONTINUE_LINKING); | |
2447 | stmt = gimple_build_assign (fd->loops[i].v, t); | |
2448 | gsi_insert_after (&gsi2, stmt, GSI_CONTINUE_LINKING); | |
2449 | } | |
2450 | /* Fallback implementation. Evaluate the loops in between | |
2451 | (inclusive) fd->first_nonrect and fd->last_nonrect at | |
2452 | runtime unsing temporaries instead of the original iteration | |
2453 | variables, in the body just bump the counter and compare | |
2454 | with the desired value. */ | |
aed3ab25 JJ |
2455 | gimple_stmt_iterator gsi2 = *gsi; |
2456 | basic_block entry_bb = gsi_bb (gsi2); | |
2457 | edge e = split_block (entry_bb, gsi_stmt (gsi2)); | |
2458 | e = split_block (e->dest, (gimple *) NULL); | |
2459 | basic_block dom_bb = NULL; | |
2460 | basic_block cur_bb = e->src; | |
2461 | basic_block next_bb = e->dest; | |
2462 | entry_bb = e->dest; | |
2463 | *gsi = gsi_after_labels (entry_bb); | |
2464 | ||
2465 | tree *vs = XALLOCAVEC (tree, fd->last_nonrect); | |
2466 | tree n1 = NULL_TREE, n2 = NULL_TREE; | |
2467 | memset (vs, 0, fd->last_nonrect * sizeof (tree)); | |
2468 | ||
2469 | for (int j = fd->first_nonrect; j <= fd->last_nonrect; j++) | |
2470 | { | |
2471 | tree itype = TREE_TYPE (fd->loops[j].v); | |
2472 | bool rect_p = (fd->loops[j].m1 == NULL_TREE | |
2473 | && fd->loops[j].m2 == NULL_TREE | |
2474 | && !fd->loops[j].non_rect_referenced); | |
2475 | gsi2 = gsi_after_labels (cur_bb); | |
2476 | t = fold_convert (itype, unshare_expr (fd->loops[j].n1)); | |
2477 | if (fd->loops[j].m1) | |
2478 | { | |
2479 | n1 = fold_convert (itype, unshare_expr (fd->loops[j].m1)); | |
2480 | n1 = fold_build2 (MULT_EXPR, itype, | |
2481 | vs[j - fd->loops[j].outer], n1); | |
2482 | n1 = fold_build2 (PLUS_EXPR, itype, n1, t); | |
2483 | } | |
2484 | else if (rect_p) | |
2485 | n1 = build_zero_cst (type); | |
2486 | else | |
2487 | n1 = t; | |
2488 | n1 = force_gimple_operand_gsi (&gsi2, n1, true, NULL_TREE, | |
2489 | true, GSI_SAME_STMT); | |
2490 | if (j < fd->last_nonrect) | |
2491 | { | |
2492 | vs[j] = create_tmp_reg (rect_p ? type : itype, ".it"); | |
2493 | expand_omp_build_assign (&gsi2, vs[j], n1); | |
2494 | } | |
2495 | t = fold_convert (itype, unshare_expr (fd->loops[j].n2)); | |
2496 | if (fd->loops[j].m2) | |
2497 | { | |
2498 | n2 = fold_convert (itype, unshare_expr (fd->loops[j].m2)); | |
2499 | n2 = fold_build2 (MULT_EXPR, itype, | |
2500 | vs[j - fd->loops[j].outer], n2); | |
2501 | n2 = fold_build2 (PLUS_EXPR, itype, n2, t); | |
2502 | } | |
2503 | else if (rect_p) | |
2504 | n2 = counts[j]; | |
2505 | else | |
2506 | n2 = t; | |
2507 | n2 = force_gimple_operand_gsi (&gsi2, n2, true, NULL_TREE, | |
2508 | true, GSI_SAME_STMT); | |
2509 | if (j == fd->last_nonrect) | |
2510 | { | |
2511 | gcond *cond_stmt | |
2512 | = gimple_build_cond (fd->loops[j].cond_code, n1, n2, | |
2513 | NULL_TREE, NULL_TREE); | |
2514 | gsi_insert_before (&gsi2, cond_stmt, GSI_SAME_STMT); | |
2515 | e = split_block (cur_bb, cond_stmt); | |
2516 | e->flags = EDGE_TRUE_VALUE; | |
2517 | edge ne = make_edge (cur_bb, next_bb, EDGE_FALSE_VALUE); | |
2518 | e->probability = profile_probability::likely ().guessed (); | |
2519 | ne->probability = e->probability.invert (); | |
2520 | gsi2 = gsi_after_labels (e->dest); | |
2521 | ||
2522 | t = build_int_cst (itype, (fd->loops[j].cond_code == LT_EXPR | |
2523 | ? -1 : 1)); | |
2524 | t = fold_build2 (PLUS_EXPR, itype, | |
2525 | fold_convert (itype, fd->loops[j].step), t); | |
2526 | t = fold_build2 (PLUS_EXPR, itype, t, n2); | |
2527 | t = fold_build2 (MINUS_EXPR, itype, t, n1); | |
2528 | tree step = fold_convert (itype, fd->loops[j].step); | |
2529 | if (TYPE_UNSIGNED (itype) | |
2530 | && fd->loops[j].cond_code == GT_EXPR) | |
2531 | t = fold_build2 (TRUNC_DIV_EXPR, itype, | |
2532 | fold_build1 (NEGATE_EXPR, itype, t), | |
2533 | fold_build1 (NEGATE_EXPR, itype, step)); | |
2534 | else | |
2535 | t = fold_build2 (TRUNC_DIV_EXPR, itype, t, step); | |
2536 | t = fold_convert (type, t); | |
2537 | t = fold_build2 (PLUS_EXPR, type, idx, t); | |
2538 | t = force_gimple_operand_gsi (&gsi2, t, true, NULL_TREE, | |
2539 | true, GSI_SAME_STMT); | |
2540 | e = make_edge (e->dest, next_bb, EDGE_FALLTHRU); | |
2541 | set_immediate_dominator (CDI_DOMINATORS, next_bb, cur_bb); | |
2542 | cond_stmt | |
2543 | = gimple_build_cond (LE_EXPR, t, stopval, NULL_TREE, | |
2544 | NULL_TREE); | |
2545 | gsi_insert_before (&gsi2, cond_stmt, GSI_SAME_STMT); | |
2546 | e = split_block (gsi_bb (gsi2), cond_stmt); | |
2547 | e->flags = EDGE_TRUE_VALUE; | |
2548 | e->probability = profile_probability::likely ().guessed (); | |
2549 | ne = make_edge (e->src, entry_bb, EDGE_FALSE_VALUE); | |
2550 | ne->probability = e->probability.invert (); | |
2551 | gsi2 = gsi_after_labels (e->dest); | |
2552 | expand_omp_build_assign (&gsi2, idx, t); | |
2553 | set_immediate_dominator (CDI_DOMINATORS, entry_bb, dom_bb); | |
2554 | break; | |
2555 | } | |
2556 | e = split_block (cur_bb, last_stmt (cur_bb)); | |
2557 | ||
2558 | basic_block new_cur_bb = create_empty_bb (cur_bb); | |
2559 | add_bb_to_loop (new_cur_bb, cur_bb->loop_father); | |
2560 | ||
2561 | gsi2 = gsi_after_labels (e->dest); | |
2562 | if (rect_p) | |
2563 | t = fold_build2 (PLUS_EXPR, type, vs[j], | |
2564 | build_one_cst (type)); | |
2565 | else | |
2566 | { | |
2567 | tree step | |
2568 | = fold_convert (itype, unshare_expr (fd->loops[j].step)); | |
2569 | t = fold_build2 (PLUS_EXPR, itype, vs[j], step); | |
2570 | } | |
2571 | t = force_gimple_operand_gsi (&gsi2, t, true, NULL_TREE, | |
2572 | true, GSI_SAME_STMT); | |
2573 | expand_omp_build_assign (&gsi2, vs[j], t); | |
2574 | ||
2575 | edge ne = split_block (e->dest, last_stmt (e->dest)); | |
2576 | gsi2 = gsi_after_labels (ne->dest); | |
2577 | ||
2578 | gcond *cond_stmt; | |
2579 | if (next_bb == entry_bb) | |
2580 | /* No need to actually check the outermost condition. */ | |
2581 | cond_stmt | |
2582 | = gimple_build_cond (EQ_EXPR, boolean_true_node, | |
2583 | boolean_true_node, | |
2584 | NULL_TREE, NULL_TREE); | |
2585 | else | |
2586 | cond_stmt | |
2587 | = gimple_build_cond (rect_p ? LT_EXPR | |
2588 | : fd->loops[j].cond_code, | |
2589 | vs[j], n2, NULL_TREE, NULL_TREE); | |
2590 | gsi_insert_before (&gsi2, cond_stmt, GSI_SAME_STMT); | |
2591 | edge e3, e4; | |
2592 | if (next_bb == entry_bb) | |
2593 | { | |
2594 | e3 = find_edge (ne->dest, next_bb); | |
2595 | e3->flags = EDGE_FALSE_VALUE; | |
2596 | dom_bb = ne->dest; | |
2597 | } | |
2598 | else | |
2599 | e3 = make_edge (ne->dest, next_bb, EDGE_FALSE_VALUE); | |
2600 | e4 = make_edge (ne->dest, new_cur_bb, EDGE_TRUE_VALUE); | |
2601 | e4->probability = profile_probability::likely ().guessed (); | |
2602 | e3->probability = e4->probability.invert (); | |
2603 | basic_block esrc = e->src; | |
2604 | make_edge (e->src, ne->dest, EDGE_FALLTHRU); | |
2605 | cur_bb = new_cur_bb; | |
2606 | basic_block latch_bb = next_bb; | |
2607 | next_bb = e->dest; | |
2608 | remove_edge (e); | |
2609 | set_immediate_dominator (CDI_DOMINATORS, ne->dest, esrc); | |
2610 | set_immediate_dominator (CDI_DOMINATORS, latch_bb, ne->dest); | |
2611 | set_immediate_dominator (CDI_DOMINATORS, cur_bb, ne->dest); | |
2612 | } | |
2613 | for (int j = fd->last_nonrect; j >= fd->first_nonrect; j--) | |
2614 | { | |
2615 | tree itype = TREE_TYPE (fd->loops[j].v); | |
2616 | bool rect_p = (fd->loops[j].m1 == NULL_TREE | |
2617 | && fd->loops[j].m2 == NULL_TREE | |
2618 | && !fd->loops[j].non_rect_referenced); | |
2619 | if (j == fd->last_nonrect) | |
2620 | { | |
2621 | t = fold_build2 (MINUS_EXPR, type, stopval, idx); | |
2622 | t = fold_convert (itype, t); | |
2623 | tree t2 | |
2624 | = fold_convert (itype, unshare_expr (fd->loops[j].step)); | |
2625 | t = fold_build2 (MULT_EXPR, itype, t, t2); | |
2626 | t = fold_build2 (PLUS_EXPR, itype, n1, t); | |
2627 | } | |
2628 | else if (rect_p) | |
2629 | { | |
2630 | t = fold_convert (itype, vs[j]); | |
2631 | t = fold_build2 (MULT_EXPR, itype, t, | |
2632 | fold_convert (itype, fd->loops[j].step)); | |
2633 | if (POINTER_TYPE_P (vtype)) | |
2634 | t = fold_build_pointer_plus (fd->loops[j].n1, t); | |
2635 | else | |
2636 | t = fold_build2 (PLUS_EXPR, itype, fd->loops[j].n1, t); | |
2637 | } | |
2638 | else | |
2639 | t = vs[j]; | |
2640 | t = force_gimple_operand_gsi (gsi, t, false, | |
2641 | NULL_TREE, true, | |
2642 | GSI_SAME_STMT); | |
2643 | stmt = gimple_build_assign (fd->loops[j].v, t); | |
2644 | gsi_insert_before (gsi, stmt, GSI_SAME_STMT); | |
2645 | } | |
2646 | if (gsi_end_p (*gsi)) | |
2647 | *gsi = gsi_last_bb (gsi_bb (*gsi)); | |
2648 | else | |
2649 | gsi_prev (gsi); | |
5acef69f JJ |
2650 | if (bb_triang) |
2651 | { | |
2652 | e = split_block (gsi_bb (*gsi), gsi_stmt (*gsi)); | |
2653 | make_edge (bb_triang, e->dest, EDGE_FALLTHRU); | |
2654 | *gsi = gsi_after_labels (e->dest); | |
2655 | if (!gsi_end_p (*gsi)) | |
2656 | gsi_insert_before (gsi, gimple_build_nop (), GSI_NEW_STMT); | |
2657 | } | |
aed3ab25 | 2658 | } |
629b3d75 | 2659 | else |
aed3ab25 JJ |
2660 | { |
2661 | t = fold_convert (itype, t); | |
2662 | t = fold_build2 (MULT_EXPR, itype, t, | |
2663 | fold_convert (itype, fd->loops[i].step)); | |
2664 | if (POINTER_TYPE_P (vtype)) | |
2665 | t = fold_build_pointer_plus (fd->loops[i].n1, t); | |
2666 | else | |
2667 | t = fold_build2 (PLUS_EXPR, itype, fd->loops[i].n1, t); | |
2668 | t = force_gimple_operand_gsi (gsi, t, | |
2669 | DECL_P (fd->loops[i].v) | |
2670 | && TREE_ADDRESSABLE (fd->loops[i].v), | |
2671 | NULL_TREE, false, | |
2672 | GSI_CONTINUE_LINKING); | |
2673 | stmt = gimple_build_assign (fd->loops[i].v, t); | |
2674 | gsi_insert_after (gsi, stmt, GSI_CONTINUE_LINKING); | |
2675 | } | |
2676 | if (i != 0 && (i != fd->last_nonrect || fd->first_nonrect)) | |
629b3d75 MJ |
2677 | { |
2678 | t = fold_build2 (TRUNC_DIV_EXPR, type, tem, counts[i]); | |
2679 | t = force_gimple_operand_gsi (gsi, t, false, NULL_TREE, | |
2680 | false, GSI_CONTINUE_LINKING); | |
2681 | stmt = gimple_build_assign (tem, t); | |
2682 | gsi_insert_after (gsi, stmt, GSI_CONTINUE_LINKING); | |
2683 | } | |
aed3ab25 JJ |
2684 | if (i == fd->last_nonrect) |
2685 | i = fd->first_nonrect; | |
629b3d75 | 2686 | } |
aed3ab25 JJ |
2687 | if (fd->non_rect) |
2688 | for (i = 0; i <= fd->last_nonrect; i++) | |
2689 | if (fd->loops[i].m2) | |
2690 | { | |
2691 | tree itype = TREE_TYPE (fd->loops[i].v); | |
2692 | ||
2693 | tree t = fold_convert (itype, unshare_expr (fd->loops[i].m2)); | |
2694 | t = fold_build2 (MULT_EXPR, itype, | |
2695 | fd->loops[i - fd->loops[i].outer].v, t); | |
2696 | t = fold_build2 (PLUS_EXPR, itype, t, | |
2697 | fold_convert (itype, | |
2698 | unshare_expr (fd->loops[i].n2))); | |
2699 | nonrect_bounds[i] = create_tmp_reg (itype, ".bound"); | |
2700 | t = force_gimple_operand_gsi (gsi, t, false, | |
2701 | NULL_TREE, false, | |
2702 | GSI_CONTINUE_LINKING); | |
2703 | stmt = gimple_build_assign (nonrect_bounds[i], t); | |
2704 | gsi_insert_after (gsi, stmt, GSI_CONTINUE_LINKING); | |
2705 | } | |
629b3d75 MJ |
2706 | } |
2707 | ||
2708 | /* Helper function for expand_omp_for_*. Generate code like: | |
2709 | L10: | |
2710 | V3 += STEP3; | |
2711 | if (V3 cond3 N32) goto BODY_BB; else goto L11; | |
2712 | L11: | |
2713 | V3 = N31; | |
2714 | V2 += STEP2; | |
2715 | if (V2 cond2 N22) goto BODY_BB; else goto L12; | |
2716 | L12: | |
2717 | V2 = N21; | |
2718 | V1 += STEP1; | |
aed3ab25 JJ |
2719 | goto BODY_BB; |
2720 | For non-rectangular loops, use temporaries stored in nonrect_bounds | |
2721 | for the upper bounds if M?2 multiplier is present. Given e.g. | |
2722 | for (V1 = N11; V1 cond1 N12; V1 += STEP1) | |
2723 | for (V2 = N21; V2 cond2 N22; V2 += STEP2) | |
2724 | for (V3 = N31; V3 cond3 N32; V3 += STEP3) | |
2725 | for (V4 = N41 + M41 * V2; V4 cond4 N42 + M42 * V2; V4 += STEP4) | |
2726 | do: | |
2727 | L10: | |
2728 | V4 += STEP4; | |
2729 | if (V4 cond4 NONRECT_BOUND4) goto BODY_BB; else goto L11; | |
2730 | L11: | |
2731 | V4 = N41 + M41 * V2; // This can be left out if the loop | |
2732 | // refers to the immediate parent loop | |
2733 | V3 += STEP3; | |
2734 | if (V3 cond3 N32) goto BODY_BB; else goto L12; | |
2735 | L12: | |
2736 | V3 = N31; | |
2737 | V2 += STEP2; | |
2738 | if (V2 cond2 N22) goto L120; else goto L13; | |
2739 | L120: | |
2740 | V4 = N41 + M41 * V2; | |
2741 | NONRECT_BOUND4 = N42 + M42 * V2; | |
2742 | if (V4 cond4 NONRECT_BOUND4) goto BODY_BB; else goto L12; | |
2743 | L13: | |
2744 | V2 = N21; | |
2745 | V1 += STEP1; | |
2746 | goto L120; */ | |
629b3d75 MJ |
2747 | |
2748 | static basic_block | |
aed3ab25 JJ |
2749 | extract_omp_for_update_vars (struct omp_for_data *fd, tree *nonrect_bounds, |
2750 | basic_block cont_bb, basic_block body_bb) | |
629b3d75 MJ |
2751 | { |
2752 | basic_block last_bb, bb, collapse_bb = NULL; | |
2753 | int i; | |
2754 | gimple_stmt_iterator gsi; | |
2755 | edge e; | |
2756 | tree t; | |
2757 | gimple *stmt; | |
2758 | ||
2759 | last_bb = cont_bb; | |
2760 | for (i = fd->collapse - 1; i >= 0; i--) | |
2761 | { | |
2762 | tree vtype = TREE_TYPE (fd->loops[i].v); | |
2763 | ||
2764 | bb = create_empty_bb (last_bb); | |
2765 | add_bb_to_loop (bb, last_bb->loop_father); | |
2766 | gsi = gsi_start_bb (bb); | |
2767 | ||
2768 | if (i < fd->collapse - 1) | |
2769 | { | |
2770 | e = make_edge (last_bb, bb, EDGE_FALSE_VALUE); | |
aed3ab25 JJ |
2771 | e->probability |
2772 | = profile_probability::guessed_always ().apply_scale (1, 8); | |
629b3d75 | 2773 | |
aed3ab25 JJ |
2774 | struct omp_for_data_loop *l = &fd->loops[i + 1]; |
2775 | if (l->m1 == NULL_TREE || l->outer != 1) | |
2776 | { | |
2777 | t = l->n1; | |
2778 | if (l->m1) | |
2779 | { | |
2780 | tree t2 | |
2781 | = fold_build2 (MULT_EXPR, TREE_TYPE (t), | |
2782 | fd->loops[i + 1 - l->outer].v, l->m1); | |
2783 | t = fold_build2 (PLUS_EXPR, TREE_TYPE (t), t2, t); | |
2784 | } | |
2785 | t = force_gimple_operand_gsi (&gsi, t, | |
2786 | DECL_P (l->v) | |
2787 | && TREE_ADDRESSABLE (l->v), | |
2788 | NULL_TREE, false, | |
2789 | GSI_CONTINUE_LINKING); | |
2790 | stmt = gimple_build_assign (l->v, t); | |
2791 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
2792 | } | |
629b3d75 MJ |
2793 | } |
2794 | else | |
2795 | collapse_bb = bb; | |
2796 | ||
2797 | set_immediate_dominator (CDI_DOMINATORS, bb, last_bb); | |
2798 | ||
2799 | if (POINTER_TYPE_P (vtype)) | |
2800 | t = fold_build_pointer_plus (fd->loops[i].v, fd->loops[i].step); | |
2801 | else | |
2802 | t = fold_build2 (PLUS_EXPR, vtype, fd->loops[i].v, fd->loops[i].step); | |
2803 | t = force_gimple_operand_gsi (&gsi, t, | |
2804 | DECL_P (fd->loops[i].v) | |
2805 | && TREE_ADDRESSABLE (fd->loops[i].v), | |
2806 | NULL_TREE, false, GSI_CONTINUE_LINKING); | |
2807 | stmt = gimple_build_assign (fd->loops[i].v, t); | |
2808 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
2809 | ||
aed3ab25 JJ |
2810 | if (fd->loops[i].non_rect_referenced) |
2811 | { | |
2812 | basic_block update_bb = NULL, prev_bb = NULL; | |
2813 | for (int j = i + 1; j <= fd->last_nonrect; j++) | |
2814 | if (j - fd->loops[j].outer == i) | |
2815 | { | |
2816 | tree n1, n2; | |
2817 | struct omp_for_data_loop *l = &fd->loops[j]; | |
2818 | basic_block this_bb = create_empty_bb (last_bb); | |
2819 | add_bb_to_loop (this_bb, last_bb->loop_father); | |
2820 | gimple_stmt_iterator gsi2 = gsi_start_bb (this_bb); | |
2821 | if (prev_bb) | |
2822 | { | |
2823 | e = make_edge (prev_bb, this_bb, EDGE_TRUE_VALUE); | |
2824 | e->probability | |
2825 | = profile_probability::guessed_always ().apply_scale (7, | |
2826 | 8); | |
2827 | set_immediate_dominator (CDI_DOMINATORS, this_bb, prev_bb); | |
2828 | ||
2829 | } | |
2830 | if (l->m1) | |
2831 | { | |
2832 | t = fold_build2 (MULT_EXPR, TREE_TYPE (l->m1), l->m1, | |
2833 | fd->loops[i].v); | |
2834 | t = fold_build2 (PLUS_EXPR, TREE_TYPE (l->v), t, l->n1); | |
2835 | n1 = force_gimple_operand_gsi (&gsi2, t, true, NULL_TREE, | |
2836 | false, | |
2837 | GSI_CONTINUE_LINKING); | |
2838 | stmt = gimple_build_assign (l->v, n1); | |
2839 | gsi_insert_after (&gsi2, stmt, GSI_CONTINUE_LINKING); | |
2840 | n1 = l->v; | |
2841 | } | |
2842 | else | |
2843 | n1 = force_gimple_operand_gsi (&gsi2, l->n1, true, | |
2844 | NULL_TREE, false, | |
2845 | GSI_CONTINUE_LINKING); | |
2846 | if (l->m2) | |
2847 | { | |
2848 | t = fold_build2 (MULT_EXPR, TREE_TYPE (l->m2), l->m2, | |
2849 | fd->loops[i].v); | |
2850 | t = fold_build2 (PLUS_EXPR, TREE_TYPE (nonrect_bounds[j]), | |
2851 | t, unshare_expr (l->n2)); | |
2852 | n2 = force_gimple_operand_gsi (&gsi2, t, true, NULL_TREE, | |
2853 | false, | |
2854 | GSI_CONTINUE_LINKING); | |
2855 | stmt = gimple_build_assign (nonrect_bounds[j], n2); | |
2856 | gsi_insert_after (&gsi2, stmt, GSI_CONTINUE_LINKING); | |
2857 | n2 = nonrect_bounds[j]; | |
2858 | } | |
2859 | else | |
2860 | n2 = force_gimple_operand_gsi (&gsi2, unshare_expr (l->n2), | |
2861 | true, NULL_TREE, false, | |
2862 | GSI_CONTINUE_LINKING); | |
2863 | gcond *cond_stmt | |
2864 | = gimple_build_cond (l->cond_code, n1, n2, | |
2865 | NULL_TREE, NULL_TREE); | |
2866 | gsi_insert_after (&gsi2, cond_stmt, GSI_CONTINUE_LINKING); | |
2867 | if (update_bb == NULL) | |
2868 | update_bb = this_bb; | |
2869 | e = make_edge (this_bb, bb, EDGE_FALSE_VALUE); | |
2870 | e->probability | |
2871 | = profile_probability::guessed_always ().apply_scale (1, 8); | |
2872 | if (prev_bb == NULL) | |
2873 | set_immediate_dominator (CDI_DOMINATORS, this_bb, last_bb); | |
2874 | prev_bb = this_bb; | |
2875 | } | |
2876 | e = make_edge (prev_bb, body_bb, EDGE_TRUE_VALUE); | |
2877 | e->probability | |
2878 | = profile_probability::guessed_always ().apply_scale (7, 8); | |
2879 | body_bb = update_bb; | |
2880 | } | |
2881 | ||
629b3d75 MJ |
2882 | if (i > 0) |
2883 | { | |
aed3ab25 JJ |
2884 | if (fd->loops[i].m2) |
2885 | t = nonrect_bounds[i]; | |
2886 | else | |
2887 | t = unshare_expr (fd->loops[i].n2); | |
629b3d75 MJ |
2888 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, |
2889 | false, GSI_CONTINUE_LINKING); | |
2890 | tree v = fd->loops[i].v; | |
2891 | if (DECL_P (v) && TREE_ADDRESSABLE (v)) | |
2892 | v = force_gimple_operand_gsi (&gsi, v, true, NULL_TREE, | |
2893 | false, GSI_CONTINUE_LINKING); | |
2894 | t = fold_build2 (fd->loops[i].cond_code, boolean_type_node, v, t); | |
2895 | stmt = gimple_build_cond_empty (t); | |
2896 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
d1ffbd43 JJ |
2897 | if (walk_tree (gimple_cond_lhs_ptr (as_a <gcond *> (stmt)), |
2898 | expand_omp_regimplify_p, NULL, NULL) | |
2899 | || walk_tree (gimple_cond_rhs_ptr (as_a <gcond *> (stmt)), | |
2900 | expand_omp_regimplify_p, NULL, NULL)) | |
2901 | gimple_regimplify_operands (stmt, &gsi); | |
629b3d75 | 2902 | e = make_edge (bb, body_bb, EDGE_TRUE_VALUE); |
357067f2 | 2903 | e->probability = profile_probability::guessed_always ().apply_scale (7, 8); |
629b3d75 MJ |
2904 | } |
2905 | else | |
2906 | make_edge (bb, body_bb, EDGE_FALLTHRU); | |
aed3ab25 | 2907 | set_immediate_dominator (CDI_DOMINATORS, bb, last_bb); |
629b3d75 MJ |
2908 | last_bb = bb; |
2909 | } | |
2910 | ||
2911 | return collapse_bb; | |
2912 | } | |
2913 | ||
2914 | /* Expand #pragma omp ordered depend(source). */ | |
2915 | ||
2916 | static void | |
2917 | expand_omp_ordered_source (gimple_stmt_iterator *gsi, struct omp_for_data *fd, | |
2918 | tree *counts, location_t loc) | |
2919 | { | |
2920 | enum built_in_function source_ix | |
2921 | = fd->iter_type == long_integer_type_node | |
2922 | ? BUILT_IN_GOMP_DOACROSS_POST : BUILT_IN_GOMP_DOACROSS_ULL_POST; | |
2923 | gimple *g | |
2924 | = gimple_build_call (builtin_decl_explicit (source_ix), 1, | |
2925 | build_fold_addr_expr (counts[fd->ordered])); | |
2926 | gimple_set_location (g, loc); | |
2927 | gsi_insert_before (gsi, g, GSI_SAME_STMT); | |
2928 | } | |
2929 | ||
2930 | /* Expand a single depend from #pragma omp ordered depend(sink:...). */ | |
2931 | ||
2932 | static void | |
2933 | expand_omp_ordered_sink (gimple_stmt_iterator *gsi, struct omp_for_data *fd, | |
2934 | tree *counts, tree c, location_t loc) | |
2935 | { | |
2936 | auto_vec<tree, 10> args; | |
2937 | enum built_in_function sink_ix | |
2938 | = fd->iter_type == long_integer_type_node | |
2939 | ? BUILT_IN_GOMP_DOACROSS_WAIT : BUILT_IN_GOMP_DOACROSS_ULL_WAIT; | |
2940 | tree t, off, coff = NULL_TREE, deps = OMP_CLAUSE_DECL (c), cond = NULL_TREE; | |
2941 | int i; | |
2942 | gimple_stmt_iterator gsi2 = *gsi; | |
2943 | bool warned_step = false; | |
2944 | ||
2945 | for (i = 0; i < fd->ordered; i++) | |
2946 | { | |
2947 | tree step = NULL_TREE; | |
2948 | off = TREE_PURPOSE (deps); | |
2949 | if (TREE_CODE (off) == TRUNC_DIV_EXPR) | |
2950 | { | |
2951 | step = TREE_OPERAND (off, 1); | |
2952 | off = TREE_OPERAND (off, 0); | |
2953 | } | |
2954 | if (!integer_zerop (off)) | |
2955 | { | |
2956 | gcc_assert (fd->loops[i].cond_code == LT_EXPR | |
2957 | || fd->loops[i].cond_code == GT_EXPR); | |
2958 | bool forward = fd->loops[i].cond_code == LT_EXPR; | |
2959 | if (step) | |
2960 | { | |
2961 | /* Non-simple Fortran DO loops. If step is variable, | |
2962 | we don't know at compile even the direction, so can't | |
2963 | warn. */ | |
2964 | if (TREE_CODE (step) != INTEGER_CST) | |
2965 | break; | |
2966 | forward = tree_int_cst_sgn (step) != -1; | |
2967 | } | |
2968 | if (forward ^ OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps)) | |
90a0bf4e JJ |
2969 | warning_at (loc, 0, "%<depend%> clause with %<sink%> modifier " |
2970 | "waiting for lexically later iteration"); | |
629b3d75 MJ |
2971 | break; |
2972 | } | |
2973 | deps = TREE_CHAIN (deps); | |
2974 | } | |
2975 | /* If all offsets corresponding to the collapsed loops are zero, | |
2976 | this depend clause can be ignored. FIXME: but there is still a | |
2977 | flush needed. We need to emit one __sync_synchronize () for it | |
2978 | though (perhaps conditionally)? Solve this together with the | |
2979 | conservative dependence folding optimization. | |
2980 | if (i >= fd->collapse) | |
2981 | return; */ | |
2982 | ||
2983 | deps = OMP_CLAUSE_DECL (c); | |
2984 | gsi_prev (&gsi2); | |
2985 | edge e1 = split_block (gsi_bb (gsi2), gsi_stmt (gsi2)); | |
2986 | edge e2 = split_block_after_labels (e1->dest); | |
2987 | ||
2988 | gsi2 = gsi_after_labels (e1->dest); | |
2989 | *gsi = gsi_last_bb (e1->src); | |
2990 | for (i = 0; i < fd->ordered; i++) | |
2991 | { | |
2992 | tree itype = TREE_TYPE (fd->loops[i].v); | |
2993 | tree step = NULL_TREE; | |
2994 | tree orig_off = NULL_TREE; | |
2995 | if (POINTER_TYPE_P (itype)) | |
2996 | itype = sizetype; | |
2997 | if (i) | |
2998 | deps = TREE_CHAIN (deps); | |
2999 | off = TREE_PURPOSE (deps); | |
3000 | if (TREE_CODE (off) == TRUNC_DIV_EXPR) | |
3001 | { | |
3002 | step = TREE_OPERAND (off, 1); | |
3003 | off = TREE_OPERAND (off, 0); | |
3004 | gcc_assert (fd->loops[i].cond_code == LT_EXPR | |
3005 | && integer_onep (fd->loops[i].step) | |
3006 | && !POINTER_TYPE_P (TREE_TYPE (fd->loops[i].v))); | |
3007 | } | |
3008 | tree s = fold_convert_loc (loc, itype, step ? step : fd->loops[i].step); | |
3009 | if (step) | |
3010 | { | |
3011 | off = fold_convert_loc (loc, itype, off); | |
3012 | orig_off = off; | |
3013 | off = fold_build2_loc (loc, TRUNC_DIV_EXPR, itype, off, s); | |
3014 | } | |
3015 | ||
3016 | if (integer_zerop (off)) | |
3017 | t = boolean_true_node; | |
3018 | else | |
3019 | { | |
3020 | tree a; | |
3021 | tree co = fold_convert_loc (loc, itype, off); | |
3022 | if (POINTER_TYPE_P (TREE_TYPE (fd->loops[i].v))) | |
3023 | { | |
3024 | if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps)) | |
3025 | co = fold_build1_loc (loc, NEGATE_EXPR, itype, co); | |
3026 | a = fold_build2_loc (loc, POINTER_PLUS_EXPR, | |
3027 | TREE_TYPE (fd->loops[i].v), fd->loops[i].v, | |
3028 | co); | |
3029 | } | |
3030 | else if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps)) | |
3031 | a = fold_build2_loc (loc, MINUS_EXPR, TREE_TYPE (fd->loops[i].v), | |
3032 | fd->loops[i].v, co); | |
3033 | else | |
3034 | a = fold_build2_loc (loc, PLUS_EXPR, TREE_TYPE (fd->loops[i].v), | |
3035 | fd->loops[i].v, co); | |
3036 | if (step) | |
3037 | { | |
3038 | tree t1, t2; | |
3039 | if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps)) | |
3040 | t1 = fold_build2_loc (loc, GE_EXPR, boolean_type_node, a, | |
3041 | fd->loops[i].n1); | |
3042 | else | |
3043 | t1 = fold_build2_loc (loc, LT_EXPR, boolean_type_node, a, | |
3044 | fd->loops[i].n2); | |
3045 | if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps)) | |
3046 | t2 = fold_build2_loc (loc, LT_EXPR, boolean_type_node, a, | |
3047 | fd->loops[i].n2); | |
3048 | else | |
3049 | t2 = fold_build2_loc (loc, GE_EXPR, boolean_type_node, a, | |
3050 | fd->loops[i].n1); | |
3051 | t = fold_build2_loc (loc, LT_EXPR, boolean_type_node, | |
3052 | step, build_int_cst (TREE_TYPE (step), 0)); | |
3053 | if (TREE_CODE (step) != INTEGER_CST) | |
3054 | { | |
3055 | t1 = unshare_expr (t1); | |
3056 | t1 = force_gimple_operand_gsi (gsi, t1, true, NULL_TREE, | |
3057 | false, GSI_CONTINUE_LINKING); | |
3058 | t2 = unshare_expr (t2); | |
3059 | t2 = force_gimple_operand_gsi (gsi, t2, true, NULL_TREE, | |
3060 | false, GSI_CONTINUE_LINKING); | |
3061 | } | |
3062 | t = fold_build3_loc (loc, COND_EXPR, boolean_type_node, | |
3063 | t, t2, t1); | |
3064 | } | |
3065 | else if (fd->loops[i].cond_code == LT_EXPR) | |
3066 | { | |
3067 | if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps)) | |
3068 | t = fold_build2_loc (loc, GE_EXPR, boolean_type_node, a, | |
3069 | fd->loops[i].n1); | |
3070 | else | |
3071 | t = fold_build2_loc (loc, LT_EXPR, boolean_type_node, a, | |
3072 | fd->loops[i].n2); | |
3073 | } | |
3074 | else if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps)) | |
3075 | t = fold_build2_loc (loc, GT_EXPR, boolean_type_node, a, | |
3076 | fd->loops[i].n2); | |
3077 | else | |
3078 | t = fold_build2_loc (loc, LE_EXPR, boolean_type_node, a, | |
3079 | fd->loops[i].n1); | |
3080 | } | |
3081 | if (cond) | |
3082 | cond = fold_build2_loc (loc, BIT_AND_EXPR, boolean_type_node, cond, t); | |
3083 | else | |
3084 | cond = t; | |
3085 | ||
3086 | off = fold_convert_loc (loc, itype, off); | |
3087 | ||
3088 | if (step | |
3089 | || (fd->loops[i].cond_code == LT_EXPR | |
3090 | ? !integer_onep (fd->loops[i].step) | |
3091 | : !integer_minus_onep (fd->loops[i].step))) | |
3092 | { | |
3093 | if (step == NULL_TREE | |
3094 | && TYPE_UNSIGNED (itype) | |
3095 | && fd->loops[i].cond_code == GT_EXPR) | |
3096 | t = fold_build2_loc (loc, TRUNC_MOD_EXPR, itype, off, | |
3097 | fold_build1_loc (loc, NEGATE_EXPR, itype, | |
3098 | s)); | |
3099 | else | |
3100 | t = fold_build2_loc (loc, TRUNC_MOD_EXPR, itype, | |
3101 | orig_off ? orig_off : off, s); | |
3102 | t = fold_build2_loc (loc, EQ_EXPR, boolean_type_node, t, | |
3103 | build_int_cst (itype, 0)); | |
3104 | if (integer_zerop (t) && !warned_step) | |
3105 | { | |
90a0bf4e JJ |
3106 | warning_at (loc, 0, "%<depend%> clause with %<sink%> modifier " |
3107 | "refers to iteration never in the iteration " | |
3108 | "space"); | |
629b3d75 MJ |
3109 | warned_step = true; |
3110 | } | |
3111 | cond = fold_build2_loc (loc, BIT_AND_EXPR, boolean_type_node, | |
3112 | cond, t); | |
3113 | } | |
3114 | ||
3115 | if (i <= fd->collapse - 1 && fd->collapse > 1) | |
3116 | t = fd->loop.v; | |
3117 | else if (counts[i]) | |
3118 | t = counts[i]; | |
3119 | else | |
3120 | { | |
3121 | t = fold_build2_loc (loc, MINUS_EXPR, TREE_TYPE (fd->loops[i].v), | |
3122 | fd->loops[i].v, fd->loops[i].n1); | |
3123 | t = fold_convert_loc (loc, fd->iter_type, t); | |
3124 | } | |
3125 | if (step) | |
3126 | /* We have divided off by step already earlier. */; | |
3127 | else if (TYPE_UNSIGNED (itype) && fd->loops[i].cond_code == GT_EXPR) | |
3128 | off = fold_build2_loc (loc, TRUNC_DIV_EXPR, itype, off, | |
3129 | fold_build1_loc (loc, NEGATE_EXPR, itype, | |
3130 | s)); | |
3131 | else | |
3132 | off = fold_build2_loc (loc, TRUNC_DIV_EXPR, itype, off, s); | |
3133 | if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps)) | |
3134 | off = fold_build1_loc (loc, NEGATE_EXPR, itype, off); | |
3135 | off = fold_convert_loc (loc, fd->iter_type, off); | |
3136 | if (i <= fd->collapse - 1 && fd->collapse > 1) | |
3137 | { | |
3138 | if (i) | |
3139 | off = fold_build2_loc (loc, PLUS_EXPR, fd->iter_type, coff, | |
3140 | off); | |
3141 | if (i < fd->collapse - 1) | |
3142 | { | |
3143 | coff = fold_build2_loc (loc, MULT_EXPR, fd->iter_type, off, | |
3144 | counts[i]); | |
3145 | continue; | |
3146 | } | |
3147 | } | |
3148 | off = unshare_expr (off); | |
3149 | t = fold_build2_loc (loc, PLUS_EXPR, fd->iter_type, t, off); | |
3150 | t = force_gimple_operand_gsi (&gsi2, t, true, NULL_TREE, | |
3151 | true, GSI_SAME_STMT); | |
3152 | args.safe_push (t); | |
3153 | } | |
3154 | gimple *g = gimple_build_call_vec (builtin_decl_explicit (sink_ix), args); | |
3155 | gimple_set_location (g, loc); | |
3156 | gsi_insert_before (&gsi2, g, GSI_SAME_STMT); | |
3157 | ||
3158 | cond = unshare_expr (cond); | |
3159 | cond = force_gimple_operand_gsi (gsi, cond, true, NULL_TREE, false, | |
3160 | GSI_CONTINUE_LINKING); | |
3161 | gsi_insert_after (gsi, gimple_build_cond_empty (cond), GSI_NEW_STMT); | |
3162 | edge e3 = make_edge (e1->src, e2->dest, EDGE_FALSE_VALUE); | |
357067f2 JH |
3163 | e3->probability = profile_probability::guessed_always ().apply_scale (1, 8); |
3164 | e1->probability = e3->probability.invert (); | |
629b3d75 MJ |
3165 | e1->flags = EDGE_TRUE_VALUE; |
3166 | set_immediate_dominator (CDI_DOMINATORS, e2->dest, e1->src); | |
3167 | ||
3168 | *gsi = gsi_after_labels (e2->dest); | |
3169 | } | |
3170 | ||
3171 | /* Expand all #pragma omp ordered depend(source) and | |
3172 | #pragma omp ordered depend(sink:...) constructs in the current | |
3173 | #pragma omp for ordered(n) region. */ | |
3174 | ||
3175 | static void | |
3176 | expand_omp_ordered_source_sink (struct omp_region *region, | |
3177 | struct omp_for_data *fd, tree *counts, | |
3178 | basic_block cont_bb) | |
3179 | { | |
3180 | struct omp_region *inner; | |
3181 | int i; | |
3182 | for (i = fd->collapse - 1; i < fd->ordered; i++) | |
3183 | if (i == fd->collapse - 1 && fd->collapse > 1) | |
3184 | counts[i] = NULL_TREE; | |
3185 | else if (i >= fd->collapse && !cont_bb) | |
3186 | counts[i] = build_zero_cst (fd->iter_type); | |
3187 | else if (!POINTER_TYPE_P (TREE_TYPE (fd->loops[i].v)) | |
3188 | && integer_onep (fd->loops[i].step)) | |
3189 | counts[i] = NULL_TREE; | |
3190 | else | |
3191 | counts[i] = create_tmp_var (fd->iter_type, ".orditer"); | |
3192 | tree atype | |
3193 | = build_array_type_nelts (fd->iter_type, fd->ordered - fd->collapse + 1); | |
3194 | counts[fd->ordered] = create_tmp_var (atype, ".orditera"); | |
3195 | TREE_ADDRESSABLE (counts[fd->ordered]) = 1; | |
3196 | ||
3197 | for (inner = region->inner; inner; inner = inner->next) | |
3198 | if (inner->type == GIMPLE_OMP_ORDERED) | |
3199 | { | |
3200 | gomp_ordered *ord_stmt = inner->ord_stmt; | |
3201 | gimple_stmt_iterator gsi = gsi_for_stmt (ord_stmt); | |
3202 | location_t loc = gimple_location (ord_stmt); | |
3203 | tree c; | |
3204 | for (c = gimple_omp_ordered_clauses (ord_stmt); | |
3205 | c; c = OMP_CLAUSE_CHAIN (c)) | |
3206 | if (OMP_CLAUSE_DEPEND_KIND (c) == OMP_CLAUSE_DEPEND_SOURCE) | |
3207 | break; | |
3208 | if (c) | |
3209 | expand_omp_ordered_source (&gsi, fd, counts, loc); | |
3210 | for (c = gimple_omp_ordered_clauses (ord_stmt); | |
3211 | c; c = OMP_CLAUSE_CHAIN (c)) | |
3212 | if (OMP_CLAUSE_DEPEND_KIND (c) == OMP_CLAUSE_DEPEND_SINK) | |
3213 | expand_omp_ordered_sink (&gsi, fd, counts, c, loc); | |
3214 | gsi_remove (&gsi, true); | |
3215 | } | |
3216 | } | |
3217 | ||
3218 | /* Wrap the body into fd->ordered - fd->collapse loops that aren't | |
3219 | collapsed. */ | |
3220 | ||
3221 | static basic_block | |
3222 | expand_omp_for_ordered_loops (struct omp_for_data *fd, tree *counts, | |
3223 | basic_block cont_bb, basic_block body_bb, | |
3224 | bool ordered_lastprivate) | |
3225 | { | |
3226 | if (fd->ordered == fd->collapse) | |
3227 | return cont_bb; | |
3228 | ||
3229 | if (!cont_bb) | |
3230 | { | |
3231 | gimple_stmt_iterator gsi = gsi_after_labels (body_bb); | |
3232 | for (int i = fd->collapse; i < fd->ordered; i++) | |
3233 | { | |
3234 | tree type = TREE_TYPE (fd->loops[i].v); | |
3235 | tree n1 = fold_convert (type, fd->loops[i].n1); | |
3236 | expand_omp_build_assign (&gsi, fd->loops[i].v, n1); | |
3237 | tree aref = build4 (ARRAY_REF, fd->iter_type, counts[fd->ordered], | |
3238 | size_int (i - fd->collapse + 1), | |
3239 | NULL_TREE, NULL_TREE); | |
3240 | expand_omp_build_assign (&gsi, aref, build_zero_cst (fd->iter_type)); | |
3241 | } | |
3242 | return NULL; | |
3243 | } | |
3244 | ||
3245 | for (int i = fd->ordered - 1; i >= fd->collapse; i--) | |
3246 | { | |
3247 | tree t, type = TREE_TYPE (fd->loops[i].v); | |
3248 | gimple_stmt_iterator gsi = gsi_after_labels (body_bb); | |
3249 | expand_omp_build_assign (&gsi, fd->loops[i].v, | |
3250 | fold_convert (type, fd->loops[i].n1)); | |
3251 | if (counts[i]) | |
3252 | expand_omp_build_assign (&gsi, counts[i], | |
3253 | build_zero_cst (fd->iter_type)); | |
3254 | tree aref = build4 (ARRAY_REF, fd->iter_type, counts[fd->ordered], | |
3255 | size_int (i - fd->collapse + 1), | |
3256 | NULL_TREE, NULL_TREE); | |
3257 | expand_omp_build_assign (&gsi, aref, build_zero_cst (fd->iter_type)); | |
3258 | if (!gsi_end_p (gsi)) | |
3259 | gsi_prev (&gsi); | |
3260 | else | |
3261 | gsi = gsi_last_bb (body_bb); | |
3262 | edge e1 = split_block (body_bb, gsi_stmt (gsi)); | |
3263 | basic_block new_body = e1->dest; | |
3264 | if (body_bb == cont_bb) | |
3265 | cont_bb = new_body; | |
3266 | edge e2 = NULL; | |
3267 | basic_block new_header; | |
3268 | if (EDGE_COUNT (cont_bb->preds) > 0) | |
3269 | { | |
3270 | gsi = gsi_last_bb (cont_bb); | |
3271 | if (POINTER_TYPE_P (type)) | |
3272 | t = fold_build_pointer_plus (fd->loops[i].v, | |
3273 | fold_convert (sizetype, | |
3274 | fd->loops[i].step)); | |
3275 | else | |
3276 | t = fold_build2 (PLUS_EXPR, type, fd->loops[i].v, | |
3277 | fold_convert (type, fd->loops[i].step)); | |
3278 | expand_omp_build_assign (&gsi, fd->loops[i].v, t); | |
3279 | if (counts[i]) | |
3280 | { | |
3281 | t = fold_build2 (PLUS_EXPR, fd->iter_type, counts[i], | |
3282 | build_int_cst (fd->iter_type, 1)); | |
3283 | expand_omp_build_assign (&gsi, counts[i], t); | |
3284 | t = counts[i]; | |
3285 | } | |
3286 | else | |
3287 | { | |
3288 | t = fold_build2 (MINUS_EXPR, TREE_TYPE (fd->loops[i].v), | |
3289 | fd->loops[i].v, fd->loops[i].n1); | |
3290 | t = fold_convert (fd->iter_type, t); | |
3291 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
3292 | true, GSI_SAME_STMT); | |
3293 | } | |
3294 | aref = build4 (ARRAY_REF, fd->iter_type, counts[fd->ordered], | |
3295 | size_int (i - fd->collapse + 1), | |
3296 | NULL_TREE, NULL_TREE); | |
3297 | expand_omp_build_assign (&gsi, aref, t); | |
3298 | gsi_prev (&gsi); | |
3299 | e2 = split_block (cont_bb, gsi_stmt (gsi)); | |
3300 | new_header = e2->dest; | |
3301 | } | |
3302 | else | |
3303 | new_header = cont_bb; | |
3304 | gsi = gsi_after_labels (new_header); | |
3305 | tree v = force_gimple_operand_gsi (&gsi, fd->loops[i].v, true, NULL_TREE, | |
3306 | true, GSI_SAME_STMT); | |
3307 | tree n2 | |
3308 | = force_gimple_operand_gsi (&gsi, fold_convert (type, fd->loops[i].n2), | |
3309 | true, NULL_TREE, true, GSI_SAME_STMT); | |
3310 | t = build2 (fd->loops[i].cond_code, boolean_type_node, v, n2); | |
3311 | gsi_insert_before (&gsi, gimple_build_cond_empty (t), GSI_NEW_STMT); | |
3312 | edge e3 = split_block (new_header, gsi_stmt (gsi)); | |
3313 | cont_bb = e3->dest; | |
3314 | remove_edge (e1); | |
3315 | make_edge (body_bb, new_header, EDGE_FALLTHRU); | |
3316 | e3->flags = EDGE_FALSE_VALUE; | |
357067f2 | 3317 | e3->probability = profile_probability::guessed_always ().apply_scale (1, 8); |
629b3d75 | 3318 | e1 = make_edge (new_header, new_body, EDGE_TRUE_VALUE); |
357067f2 | 3319 | e1->probability = e3->probability.invert (); |
629b3d75 MJ |
3320 | |
3321 | set_immediate_dominator (CDI_DOMINATORS, new_header, body_bb); | |
3322 | set_immediate_dominator (CDI_DOMINATORS, new_body, new_header); | |
3323 | ||
3324 | if (e2) | |
3325 | { | |
99b1c316 | 3326 | class loop *loop = alloc_loop (); |
629b3d75 MJ |
3327 | loop->header = new_header; |
3328 | loop->latch = e2->src; | |
3329 | add_loop (loop, body_bb->loop_father); | |
3330 | } | |
3331 | } | |
3332 | ||
3333 | /* If there are any lastprivate clauses and it is possible some loops | |
3334 | might have zero iterations, ensure all the decls are initialized, | |
3335 | otherwise we could crash evaluating C++ class iterators with lastprivate | |
3336 | clauses. */ | |
3337 | bool need_inits = false; | |
3338 | for (int i = fd->collapse; ordered_lastprivate && i < fd->ordered; i++) | |
3339 | if (need_inits) | |
3340 | { | |
3341 | tree type = TREE_TYPE (fd->loops[i].v); | |
3342 | gimple_stmt_iterator gsi = gsi_after_labels (body_bb); | |
3343 | expand_omp_build_assign (&gsi, fd->loops[i].v, | |
3344 | fold_convert (type, fd->loops[i].n1)); | |
3345 | } | |
3346 | else | |
3347 | { | |
3348 | tree type = TREE_TYPE (fd->loops[i].v); | |
3349 | tree this_cond = fold_build2 (fd->loops[i].cond_code, | |
3350 | boolean_type_node, | |
3351 | fold_convert (type, fd->loops[i].n1), | |
3352 | fold_convert (type, fd->loops[i].n2)); | |
3353 | if (!integer_onep (this_cond)) | |
3354 | need_inits = true; | |
3355 | } | |
3356 | ||
3357 | return cont_bb; | |
3358 | } | |
3359 | ||
3360 | /* A subroutine of expand_omp_for. Generate code for a parallel | |
3361 | loop with any schedule. Given parameters: | |
3362 | ||
3363 | for (V = N1; V cond N2; V += STEP) BODY; | |
3364 | ||
3365 | where COND is "<" or ">", we generate pseudocode | |
3366 | ||
3367 | more = GOMP_loop_foo_start (N1, N2, STEP, CHUNK, &istart0, &iend0); | |
3368 | if (more) goto L0; else goto L3; | |
3369 | L0: | |
3370 | V = istart0; | |
3371 | iend = iend0; | |
3372 | L1: | |
3373 | BODY; | |
3374 | V += STEP; | |
3375 | if (V cond iend) goto L1; else goto L2; | |
3376 | L2: | |
3377 | if (GOMP_loop_foo_next (&istart0, &iend0)) goto L0; else goto L3; | |
3378 | L3: | |
3379 | ||
3380 | If this is a combined omp parallel loop, instead of the call to | |
3381 | GOMP_loop_foo_start, we call GOMP_loop_foo_next. | |
3382 | If this is gimple_omp_for_combined_p loop, then instead of assigning | |
3383 | V and iend in L0 we assign the first two _looptemp_ clause decls of the | |
3384 | inner GIMPLE_OMP_FOR and V += STEP; and | |
3385 | if (V cond iend) goto L1; else goto L2; are removed. | |
3386 | ||
3387 | For collapsed loops, given parameters: | |
3388 | collapse(3) | |
3389 | for (V1 = N11; V1 cond1 N12; V1 += STEP1) | |
3390 | for (V2 = N21; V2 cond2 N22; V2 += STEP2) | |
3391 | for (V3 = N31; V3 cond3 N32; V3 += STEP3) | |
3392 | BODY; | |
3393 | ||
3394 | we generate pseudocode | |
3395 | ||
3396 | if (__builtin_expect (N32 cond3 N31, 0)) goto Z0; | |
3397 | if (cond3 is <) | |
3398 | adj = STEP3 - 1; | |
3399 | else | |
3400 | adj = STEP3 + 1; | |
3401 | count3 = (adj + N32 - N31) / STEP3; | |
3402 | if (__builtin_expect (N22 cond2 N21, 0)) goto Z0; | |
3403 | if (cond2 is <) | |
3404 | adj = STEP2 - 1; | |
3405 | else | |
3406 | adj = STEP2 + 1; | |
3407 | count2 = (adj + N22 - N21) / STEP2; | |
3408 | if (__builtin_expect (N12 cond1 N11, 0)) goto Z0; | |
3409 | if (cond1 is <) | |
3410 | adj = STEP1 - 1; | |
3411 | else | |
3412 | adj = STEP1 + 1; | |
3413 | count1 = (adj + N12 - N11) / STEP1; | |
3414 | count = count1 * count2 * count3; | |
3415 | goto Z1; | |
3416 | Z0: | |
3417 | count = 0; | |
3418 | Z1: | |
3419 | more = GOMP_loop_foo_start (0, count, 1, CHUNK, &istart0, &iend0); | |
3420 | if (more) goto L0; else goto L3; | |
3421 | L0: | |
3422 | V = istart0; | |
3423 | T = V; | |
3424 | V3 = N31 + (T % count3) * STEP3; | |
3425 | T = T / count3; | |
3426 | V2 = N21 + (T % count2) * STEP2; | |
3427 | T = T / count2; | |
3428 | V1 = N11 + T * STEP1; | |
3429 | iend = iend0; | |
3430 | L1: | |
3431 | BODY; | |
3432 | V += 1; | |
3433 | if (V < iend) goto L10; else goto L2; | |
3434 | L10: | |
3435 | V3 += STEP3; | |
3436 | if (V3 cond3 N32) goto L1; else goto L11; | |
3437 | L11: | |
3438 | V3 = N31; | |
3439 | V2 += STEP2; | |
3440 | if (V2 cond2 N22) goto L1; else goto L12; | |
3441 | L12: | |
3442 | V2 = N21; | |
3443 | V1 += STEP1; | |
3444 | goto L1; | |
3445 | L2: | |
3446 | if (GOMP_loop_foo_next (&istart0, &iend0)) goto L0; else goto L3; | |
3447 | L3: | |
3448 | ||
3449 | */ | |
3450 | ||
3451 | static void | |
3452 | expand_omp_for_generic (struct omp_region *region, | |
3453 | struct omp_for_data *fd, | |
3454 | enum built_in_function start_fn, | |
3455 | enum built_in_function next_fn, | |
28567c40 | 3456 | tree sched_arg, |
629b3d75 MJ |
3457 | gimple *inner_stmt) |
3458 | { | |
3459 | tree type, istart0, iend0, iend; | |
3460 | tree t, vmain, vback, bias = NULL_TREE; | |
3461 | basic_block entry_bb, cont_bb, exit_bb, l0_bb, l1_bb, collapse_bb; | |
3462 | basic_block l2_bb = NULL, l3_bb = NULL; | |
3463 | gimple_stmt_iterator gsi; | |
3464 | gassign *assign_stmt; | |
3465 | bool in_combined_parallel = is_combined_parallel (region); | |
3466 | bool broken_loop = region->cont == NULL; | |
3467 | edge e, ne; | |
3468 | tree *counts = NULL; | |
3469 | int i; | |
3470 | bool ordered_lastprivate = false; | |
3471 | ||
3472 | gcc_assert (!broken_loop || !in_combined_parallel); | |
3473 | gcc_assert (fd->iter_type == long_integer_type_node | |
3474 | || !in_combined_parallel); | |
3475 | ||
3476 | entry_bb = region->entry; | |
3477 | cont_bb = region->cont; | |
3478 | collapse_bb = NULL; | |
3479 | gcc_assert (EDGE_COUNT (entry_bb->succs) == 2); | |
3480 | gcc_assert (broken_loop | |
3481 | || BRANCH_EDGE (entry_bb)->dest == FALLTHRU_EDGE (cont_bb)->dest); | |
3482 | l0_bb = split_edge (FALLTHRU_EDGE (entry_bb)); | |
3483 | l1_bb = single_succ (l0_bb); | |
3484 | if (!broken_loop) | |
3485 | { | |
3486 | l2_bb = create_empty_bb (cont_bb); | |
3487 | gcc_assert (BRANCH_EDGE (cont_bb)->dest == l1_bb | |
3488 | || (single_succ_edge (BRANCH_EDGE (cont_bb)->dest)->dest | |
3489 | == l1_bb)); | |
3490 | gcc_assert (EDGE_COUNT (cont_bb->succs) == 2); | |
3491 | } | |
3492 | else | |
3493 | l2_bb = NULL; | |
3494 | l3_bb = BRANCH_EDGE (entry_bb)->dest; | |
3495 | exit_bb = region->exit; | |
3496 | ||
65f4b875 | 3497 | gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
3498 | |
3499 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); | |
3500 | if (fd->ordered | |
6c7ae8c5 | 3501 | && omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), |
629b3d75 MJ |
3502 | OMP_CLAUSE_LASTPRIVATE)) |
3503 | ordered_lastprivate = false; | |
28567c40 | 3504 | tree reductions = NULL_TREE; |
6c7ae8c5 JJ |
3505 | tree mem = NULL_TREE, cond_var = NULL_TREE, condtemp = NULL_TREE; |
3506 | tree memv = NULL_TREE; | |
8221c30b JJ |
3507 | if (fd->lastprivate_conditional) |
3508 | { | |
3509 | tree c = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), | |
3510 | OMP_CLAUSE__CONDTEMP_); | |
3511 | if (fd->have_pointer_condtemp) | |
3512 | condtemp = OMP_CLAUSE_DECL (c); | |
3513 | c = omp_find_clause (OMP_CLAUSE_CHAIN (c), OMP_CLAUSE__CONDTEMP_); | |
3514 | cond_var = OMP_CLAUSE_DECL (c); | |
3515 | } | |
28567c40 JJ |
3516 | if (sched_arg) |
3517 | { | |
3518 | if (fd->have_reductemp) | |
3519 | { | |
6c7ae8c5 | 3520 | tree c = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), |
28567c40 JJ |
3521 | OMP_CLAUSE__REDUCTEMP_); |
3522 | reductions = OMP_CLAUSE_DECL (c); | |
3523 | gcc_assert (TREE_CODE (reductions) == SSA_NAME); | |
3524 | gimple *g = SSA_NAME_DEF_STMT (reductions); | |
3525 | reductions = gimple_assign_rhs1 (g); | |
3526 | OMP_CLAUSE_DECL (c) = reductions; | |
3527 | entry_bb = gimple_bb (g); | |
3528 | edge e = split_block (entry_bb, g); | |
3529 | if (region->entry == entry_bb) | |
3530 | region->entry = e->dest; | |
3531 | gsi = gsi_last_bb (entry_bb); | |
3532 | } | |
3533 | else | |
3534 | reductions = null_pointer_node; | |
8221c30b | 3535 | if (fd->have_pointer_condtemp) |
6c7ae8c5 | 3536 | { |
6c7ae8c5 JJ |
3537 | tree type = TREE_TYPE (condtemp); |
3538 | memv = create_tmp_var (type); | |
3539 | TREE_ADDRESSABLE (memv) = 1; | |
3540 | unsigned HOST_WIDE_INT sz | |
3541 | = tree_to_uhwi (TYPE_SIZE_UNIT (TREE_TYPE (type))); | |
3542 | sz *= fd->lastprivate_conditional; | |
3543 | expand_omp_build_assign (&gsi, memv, build_int_cst (type, sz), | |
3544 | false); | |
3545 | mem = build_fold_addr_expr (memv); | |
3546 | } | |
3547 | else | |
3548 | mem = null_pointer_node; | |
28567c40 | 3549 | } |
629b3d75 MJ |
3550 | if (fd->collapse > 1 || fd->ordered) |
3551 | { | |
3552 | int first_zero_iter1 = -1, first_zero_iter2 = -1; | |
3553 | basic_block zero_iter1_bb = NULL, zero_iter2_bb = NULL, l2_dom_bb = NULL; | |
3554 | ||
3555 | counts = XALLOCAVEC (tree, fd->ordered ? fd->ordered + 1 : fd->collapse); | |
3556 | expand_omp_for_init_counts (fd, &gsi, entry_bb, counts, | |
3557 | zero_iter1_bb, first_zero_iter1, | |
3558 | zero_iter2_bb, first_zero_iter2, l2_dom_bb); | |
3559 | ||
3560 | if (zero_iter1_bb) | |
3561 | { | |
3562 | /* Some counts[i] vars might be uninitialized if | |
3563 | some loop has zero iterations. But the body shouldn't | |
3564 | be executed in that case, so just avoid uninit warnings. */ | |
3565 | for (i = first_zero_iter1; | |
3566 | i < (fd->ordered ? fd->ordered : fd->collapse); i++) | |
3567 | if (SSA_VAR_P (counts[i])) | |
3568 | TREE_NO_WARNING (counts[i]) = 1; | |
3569 | gsi_prev (&gsi); | |
3570 | e = split_block (entry_bb, gsi_stmt (gsi)); | |
3571 | entry_bb = e->dest; | |
3572 | make_edge (zero_iter1_bb, entry_bb, EDGE_FALLTHRU); | |
65f4b875 | 3573 | gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
3574 | set_immediate_dominator (CDI_DOMINATORS, entry_bb, |
3575 | get_immediate_dominator (CDI_DOMINATORS, | |
3576 | zero_iter1_bb)); | |
3577 | } | |
3578 | if (zero_iter2_bb) | |
3579 | { | |
3580 | /* Some counts[i] vars might be uninitialized if | |
3581 | some loop has zero iterations. But the body shouldn't | |
3582 | be executed in that case, so just avoid uninit warnings. */ | |
3583 | for (i = first_zero_iter2; i < fd->ordered; i++) | |
3584 | if (SSA_VAR_P (counts[i])) | |
3585 | TREE_NO_WARNING (counts[i]) = 1; | |
3586 | if (zero_iter1_bb) | |
3587 | make_edge (zero_iter2_bb, entry_bb, EDGE_FALLTHRU); | |
3588 | else | |
3589 | { | |
3590 | gsi_prev (&gsi); | |
3591 | e = split_block (entry_bb, gsi_stmt (gsi)); | |
3592 | entry_bb = e->dest; | |
3593 | make_edge (zero_iter2_bb, entry_bb, EDGE_FALLTHRU); | |
65f4b875 | 3594 | gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
3595 | set_immediate_dominator (CDI_DOMINATORS, entry_bb, |
3596 | get_immediate_dominator | |
3597 | (CDI_DOMINATORS, zero_iter2_bb)); | |
3598 | } | |
3599 | } | |
3600 | if (fd->collapse == 1) | |
3601 | { | |
3602 | counts[0] = fd->loop.n2; | |
3603 | fd->loop = fd->loops[0]; | |
3604 | } | |
3605 | } | |
3606 | ||
3607 | type = TREE_TYPE (fd->loop.v); | |
3608 | istart0 = create_tmp_var (fd->iter_type, ".istart0"); | |
3609 | iend0 = create_tmp_var (fd->iter_type, ".iend0"); | |
3610 | TREE_ADDRESSABLE (istart0) = 1; | |
3611 | TREE_ADDRESSABLE (iend0) = 1; | |
3612 | ||
3613 | /* See if we need to bias by LLONG_MIN. */ | |
3614 | if (fd->iter_type == long_long_unsigned_type_node | |
3615 | && TREE_CODE (type) == INTEGER_TYPE | |
3616 | && !TYPE_UNSIGNED (type) | |
3617 | && fd->ordered == 0) | |
3618 | { | |
3619 | tree n1, n2; | |
3620 | ||
3621 | if (fd->loop.cond_code == LT_EXPR) | |
3622 | { | |
3623 | n1 = fd->loop.n1; | |
3624 | n2 = fold_build2 (PLUS_EXPR, type, fd->loop.n2, fd->loop.step); | |
3625 | } | |
3626 | else | |
3627 | { | |
3628 | n1 = fold_build2 (MINUS_EXPR, type, fd->loop.n2, fd->loop.step); | |
3629 | n2 = fd->loop.n1; | |
3630 | } | |
3631 | if (TREE_CODE (n1) != INTEGER_CST | |
3632 | || TREE_CODE (n2) != INTEGER_CST | |
3633 | || ((tree_int_cst_sgn (n1) < 0) ^ (tree_int_cst_sgn (n2) < 0))) | |
3634 | bias = fold_convert (fd->iter_type, TYPE_MIN_VALUE (type)); | |
3635 | } | |
3636 | ||
3637 | gimple_stmt_iterator gsif = gsi; | |
3638 | gsi_prev (&gsif); | |
3639 | ||
3640 | tree arr = NULL_TREE; | |
3641 | if (in_combined_parallel) | |
3642 | { | |
3643 | gcc_assert (fd->ordered == 0); | |
3644 | /* In a combined parallel loop, emit a call to | |
3645 | GOMP_loop_foo_next. */ | |
3646 | t = build_call_expr (builtin_decl_explicit (next_fn), 2, | |
3647 | build_fold_addr_expr (istart0), | |
3648 | build_fold_addr_expr (iend0)); | |
3649 | } | |
3650 | else | |
3651 | { | |
3652 | tree t0, t1, t2, t3, t4; | |
3653 | /* If this is not a combined parallel loop, emit a call to | |
3654 | GOMP_loop_foo_start in ENTRY_BB. */ | |
3655 | t4 = build_fold_addr_expr (iend0); | |
3656 | t3 = build_fold_addr_expr (istart0); | |
3657 | if (fd->ordered) | |
3658 | { | |
3659 | t0 = build_int_cst (unsigned_type_node, | |
3660 | fd->ordered - fd->collapse + 1); | |
3661 | arr = create_tmp_var (build_array_type_nelts (fd->iter_type, | |
3662 | fd->ordered | |
3663 | - fd->collapse + 1), | |
3664 | ".omp_counts"); | |
3665 | DECL_NAMELESS (arr) = 1; | |
3666 | TREE_ADDRESSABLE (arr) = 1; | |
3667 | TREE_STATIC (arr) = 1; | |
3668 | vec<constructor_elt, va_gc> *v; | |
3669 | vec_alloc (v, fd->ordered - fd->collapse + 1); | |
3670 | int idx; | |
3671 | ||
3672 | for (idx = 0; idx < fd->ordered - fd->collapse + 1; idx++) | |
3673 | { | |
3674 | tree c; | |
3675 | if (idx == 0 && fd->collapse > 1) | |
3676 | c = fd->loop.n2; | |
3677 | else | |
3678 | c = counts[idx + fd->collapse - 1]; | |
3679 | tree purpose = size_int (idx); | |
3680 | CONSTRUCTOR_APPEND_ELT (v, purpose, c); | |
3681 | if (TREE_CODE (c) != INTEGER_CST) | |
3682 | TREE_STATIC (arr) = 0; | |
3683 | } | |
3684 | ||
3685 | DECL_INITIAL (arr) = build_constructor (TREE_TYPE (arr), v); | |
3686 | if (!TREE_STATIC (arr)) | |
3687 | force_gimple_operand_gsi (&gsi, build1 (DECL_EXPR, | |
3688 | void_type_node, arr), | |
3689 | true, NULL_TREE, true, GSI_SAME_STMT); | |
3690 | t1 = build_fold_addr_expr (arr); | |
3691 | t2 = NULL_TREE; | |
3692 | } | |
3693 | else | |
3694 | { | |
3695 | t2 = fold_convert (fd->iter_type, fd->loop.step); | |
3696 | t1 = fd->loop.n2; | |
3697 | t0 = fd->loop.n1; | |
3698 | if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
3699 | { | |
3700 | tree innerc | |
3701 | = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), | |
3702 | OMP_CLAUSE__LOOPTEMP_); | |
3703 | gcc_assert (innerc); | |
3704 | t0 = OMP_CLAUSE_DECL (innerc); | |
3705 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
3706 | OMP_CLAUSE__LOOPTEMP_); | |
3707 | gcc_assert (innerc); | |
3708 | t1 = OMP_CLAUSE_DECL (innerc); | |
3709 | } | |
3710 | if (POINTER_TYPE_P (TREE_TYPE (t0)) | |
3711 | && TYPE_PRECISION (TREE_TYPE (t0)) | |
3712 | != TYPE_PRECISION (fd->iter_type)) | |
3713 | { | |
3714 | /* Avoid casting pointers to integer of a different size. */ | |
3715 | tree itype = signed_type_for (type); | |
3716 | t1 = fold_convert (fd->iter_type, fold_convert (itype, t1)); | |
3717 | t0 = fold_convert (fd->iter_type, fold_convert (itype, t0)); | |
3718 | } | |
3719 | else | |
3720 | { | |
3721 | t1 = fold_convert (fd->iter_type, t1); | |
3722 | t0 = fold_convert (fd->iter_type, t0); | |
3723 | } | |
3724 | if (bias) | |
3725 | { | |
3726 | t1 = fold_build2 (PLUS_EXPR, fd->iter_type, t1, bias); | |
3727 | t0 = fold_build2 (PLUS_EXPR, fd->iter_type, t0, bias); | |
3728 | } | |
3729 | } | |
3730 | if (fd->iter_type == long_integer_type_node || fd->ordered) | |
3731 | { | |
3732 | if (fd->chunk_size) | |
3733 | { | |
3734 | t = fold_convert (fd->iter_type, fd->chunk_size); | |
3735 | t = omp_adjust_chunk_size (t, fd->simd_schedule); | |
28567c40 JJ |
3736 | if (sched_arg) |
3737 | { | |
3738 | if (fd->ordered) | |
3739 | t = build_call_expr (builtin_decl_explicit (start_fn), | |
3740 | 8, t0, t1, sched_arg, t, t3, t4, | |
3741 | reductions, mem); | |
3742 | else | |
3743 | t = build_call_expr (builtin_decl_explicit (start_fn), | |
3744 | 9, t0, t1, t2, sched_arg, t, t3, t4, | |
3745 | reductions, mem); | |
3746 | } | |
3747 | else if (fd->ordered) | |
629b3d75 MJ |
3748 | t = build_call_expr (builtin_decl_explicit (start_fn), |
3749 | 5, t0, t1, t, t3, t4); | |
3750 | else | |
3751 | t = build_call_expr (builtin_decl_explicit (start_fn), | |
3752 | 6, t0, t1, t2, t, t3, t4); | |
3753 | } | |
3754 | else if (fd->ordered) | |
3755 | t = build_call_expr (builtin_decl_explicit (start_fn), | |
3756 | 4, t0, t1, t3, t4); | |
3757 | else | |
3758 | t = build_call_expr (builtin_decl_explicit (start_fn), | |
3759 | 5, t0, t1, t2, t3, t4); | |
3760 | } | |
3761 | else | |
3762 | { | |
3763 | tree t5; | |
3764 | tree c_bool_type; | |
3765 | tree bfn_decl; | |
3766 | ||
3767 | /* The GOMP_loop_ull_*start functions have additional boolean | |
3768 | argument, true for < loops and false for > loops. | |
3769 | In Fortran, the C bool type can be different from | |
3770 | boolean_type_node. */ | |
3771 | bfn_decl = builtin_decl_explicit (start_fn); | |
3772 | c_bool_type = TREE_TYPE (TREE_TYPE (bfn_decl)); | |
3773 | t5 = build_int_cst (c_bool_type, | |
3774 | fd->loop.cond_code == LT_EXPR ? 1 : 0); | |
3775 | if (fd->chunk_size) | |
3776 | { | |
3777 | tree bfn_decl = builtin_decl_explicit (start_fn); | |
3778 | t = fold_convert (fd->iter_type, fd->chunk_size); | |
3779 | t = omp_adjust_chunk_size (t, fd->simd_schedule); | |
28567c40 JJ |
3780 | if (sched_arg) |
3781 | t = build_call_expr (bfn_decl, 10, t5, t0, t1, t2, sched_arg, | |
3782 | t, t3, t4, reductions, mem); | |
3783 | else | |
3784 | t = build_call_expr (bfn_decl, 7, t5, t0, t1, t2, t, t3, t4); | |
629b3d75 MJ |
3785 | } |
3786 | else | |
3787 | t = build_call_expr (builtin_decl_explicit (start_fn), | |
3788 | 6, t5, t0, t1, t2, t3, t4); | |
3789 | } | |
3790 | } | |
3791 | if (TREE_TYPE (t) != boolean_type_node) | |
3792 | t = fold_build2 (NE_EXPR, boolean_type_node, | |
3793 | t, build_int_cst (TREE_TYPE (t), 0)); | |
3794 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
01914336 | 3795 | true, GSI_SAME_STMT); |
629b3d75 MJ |
3796 | if (arr && !TREE_STATIC (arr)) |
3797 | { | |
25b45c7c | 3798 | tree clobber = build_clobber (TREE_TYPE (arr)); |
629b3d75 MJ |
3799 | gsi_insert_before (&gsi, gimple_build_assign (arr, clobber), |
3800 | GSI_SAME_STMT); | |
3801 | } | |
8221c30b | 3802 | if (fd->have_pointer_condtemp) |
6c7ae8c5 | 3803 | expand_omp_build_assign (&gsi, condtemp, memv, false); |
28567c40 JJ |
3804 | if (fd->have_reductemp) |
3805 | { | |
3806 | gimple *g = gsi_stmt (gsi); | |
3807 | gsi_remove (&gsi, true); | |
3808 | release_ssa_name (gimple_assign_lhs (g)); | |
3809 | ||
3810 | entry_bb = region->entry; | |
3811 | gsi = gsi_last_nondebug_bb (entry_bb); | |
3812 | ||
3813 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); | |
3814 | } | |
629b3d75 MJ |
3815 | gsi_insert_after (&gsi, gimple_build_cond_empty (t), GSI_SAME_STMT); |
3816 | ||
3817 | /* Remove the GIMPLE_OMP_FOR statement. */ | |
3818 | gsi_remove (&gsi, true); | |
3819 | ||
3820 | if (gsi_end_p (gsif)) | |
3821 | gsif = gsi_after_labels (gsi_bb (gsif)); | |
3822 | gsi_next (&gsif); | |
3823 | ||
3824 | /* Iteration setup for sequential loop goes in L0_BB. */ | |
3825 | tree startvar = fd->loop.v; | |
3826 | tree endvar = NULL_TREE; | |
3827 | ||
3828 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
3829 | { | |
3830 | gcc_assert (gimple_code (inner_stmt) == GIMPLE_OMP_FOR | |
3831 | && gimple_omp_for_kind (inner_stmt) | |
3832 | == GF_OMP_FOR_KIND_SIMD); | |
3833 | tree innerc = omp_find_clause (gimple_omp_for_clauses (inner_stmt), | |
3834 | OMP_CLAUSE__LOOPTEMP_); | |
3835 | gcc_assert (innerc); | |
3836 | startvar = OMP_CLAUSE_DECL (innerc); | |
3837 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
3838 | OMP_CLAUSE__LOOPTEMP_); | |
3839 | gcc_assert (innerc); | |
3840 | endvar = OMP_CLAUSE_DECL (innerc); | |
3841 | } | |
3842 | ||
3843 | gsi = gsi_start_bb (l0_bb); | |
3844 | t = istart0; | |
3845 | if (fd->ordered && fd->collapse == 1) | |
3846 | t = fold_build2 (MULT_EXPR, fd->iter_type, t, | |
3847 | fold_convert (fd->iter_type, fd->loop.step)); | |
3848 | else if (bias) | |
3849 | t = fold_build2 (MINUS_EXPR, fd->iter_type, t, bias); | |
3850 | if (fd->ordered && fd->collapse == 1) | |
3851 | { | |
3852 | if (POINTER_TYPE_P (TREE_TYPE (startvar))) | |
3853 | t = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (startvar), | |
3854 | fd->loop.n1, fold_convert (sizetype, t)); | |
3855 | else | |
3856 | { | |
3857 | t = fold_convert (TREE_TYPE (startvar), t); | |
3858 | t = fold_build2 (PLUS_EXPR, TREE_TYPE (startvar), | |
3859 | fd->loop.n1, t); | |
3860 | } | |
3861 | } | |
3862 | else | |
3863 | { | |
3864 | if (POINTER_TYPE_P (TREE_TYPE (startvar))) | |
3865 | t = fold_convert (signed_type_for (TREE_TYPE (startvar)), t); | |
3866 | t = fold_convert (TREE_TYPE (startvar), t); | |
3867 | } | |
3868 | t = force_gimple_operand_gsi (&gsi, t, | |
3869 | DECL_P (startvar) | |
3870 | && TREE_ADDRESSABLE (startvar), | |
3871 | NULL_TREE, false, GSI_CONTINUE_LINKING); | |
3872 | assign_stmt = gimple_build_assign (startvar, t); | |
3873 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
6c7ae8c5 JJ |
3874 | if (cond_var) |
3875 | { | |
3876 | tree itype = TREE_TYPE (cond_var); | |
3877 | /* For lastprivate(conditional:) itervar, we need some iteration | |
3878 | counter that starts at unsigned non-zero and increases. | |
3879 | Prefer as few IVs as possible, so if we can use startvar | |
3880 | itself, use that, or startvar + constant (those would be | |
3881 | incremented with step), and as last resort use the s0 + 1 | |
3882 | incremented by 1. */ | |
3883 | if ((fd->ordered && fd->collapse == 1) | |
3884 | || bias | |
3885 | || POINTER_TYPE_P (type) | |
3886 | || TREE_CODE (fd->loop.n1) != INTEGER_CST | |
3887 | || fd->loop.cond_code != LT_EXPR) | |
3888 | t = fold_build2 (PLUS_EXPR, itype, fold_convert (itype, istart0), | |
3889 | build_int_cst (itype, 1)); | |
3890 | else if (tree_int_cst_sgn (fd->loop.n1) == 1) | |
3891 | t = fold_convert (itype, t); | |
3892 | else | |
3893 | { | |
3894 | tree c = fold_convert (itype, fd->loop.n1); | |
3895 | c = fold_build2 (MINUS_EXPR, itype, build_int_cst (itype, 1), c); | |
3896 | t = fold_build2 (PLUS_EXPR, itype, fold_convert (itype, t), c); | |
3897 | } | |
3898 | t = force_gimple_operand_gsi (&gsi, t, false, | |
3899 | NULL_TREE, false, GSI_CONTINUE_LINKING); | |
3900 | assign_stmt = gimple_build_assign (cond_var, t); | |
3901 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
3902 | } | |
629b3d75 MJ |
3903 | |
3904 | t = iend0; | |
3905 | if (fd->ordered && fd->collapse == 1) | |
3906 | t = fold_build2 (MULT_EXPR, fd->iter_type, t, | |
3907 | fold_convert (fd->iter_type, fd->loop.step)); | |
3908 | else if (bias) | |
3909 | t = fold_build2 (MINUS_EXPR, fd->iter_type, t, bias); | |
3910 | if (fd->ordered && fd->collapse == 1) | |
3911 | { | |
3912 | if (POINTER_TYPE_P (TREE_TYPE (startvar))) | |
3913 | t = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (startvar), | |
3914 | fd->loop.n1, fold_convert (sizetype, t)); | |
3915 | else | |
3916 | { | |
3917 | t = fold_convert (TREE_TYPE (startvar), t); | |
3918 | t = fold_build2 (PLUS_EXPR, TREE_TYPE (startvar), | |
3919 | fd->loop.n1, t); | |
3920 | } | |
3921 | } | |
3922 | else | |
3923 | { | |
3924 | if (POINTER_TYPE_P (TREE_TYPE (startvar))) | |
3925 | t = fold_convert (signed_type_for (TREE_TYPE (startvar)), t); | |
3926 | t = fold_convert (TREE_TYPE (startvar), t); | |
3927 | } | |
3928 | iend = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
3929 | false, GSI_CONTINUE_LINKING); | |
3930 | if (endvar) | |
3931 | { | |
3932 | assign_stmt = gimple_build_assign (endvar, iend); | |
3933 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
3934 | if (useless_type_conversion_p (TREE_TYPE (fd->loop.v), TREE_TYPE (iend))) | |
3935 | assign_stmt = gimple_build_assign (fd->loop.v, iend); | |
3936 | else | |
3937 | assign_stmt = gimple_build_assign (fd->loop.v, NOP_EXPR, iend); | |
3938 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
3939 | } | |
3940 | /* Handle linear clause adjustments. */ | |
3941 | tree itercnt = NULL_TREE; | |
3942 | if (gimple_omp_for_kind (fd->for_stmt) == GF_OMP_FOR_KIND_FOR) | |
3943 | for (tree c = gimple_omp_for_clauses (fd->for_stmt); | |
3944 | c; c = OMP_CLAUSE_CHAIN (c)) | |
3945 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LINEAR | |
3946 | && !OMP_CLAUSE_LINEAR_NO_COPYIN (c)) | |
3947 | { | |
3948 | tree d = OMP_CLAUSE_DECL (c); | |
3949 | bool is_ref = omp_is_reference (d); | |
3950 | tree t = d, a, dest; | |
3951 | if (is_ref) | |
3952 | t = build_simple_mem_ref_loc (OMP_CLAUSE_LOCATION (c), t); | |
3953 | tree type = TREE_TYPE (t); | |
3954 | if (POINTER_TYPE_P (type)) | |
3955 | type = sizetype; | |
3956 | dest = unshare_expr (t); | |
3957 | tree v = create_tmp_var (TREE_TYPE (t), NULL); | |
3958 | expand_omp_build_assign (&gsif, v, t); | |
3959 | if (itercnt == NULL_TREE) | |
3960 | { | |
3961 | itercnt = startvar; | |
3962 | tree n1 = fd->loop.n1; | |
3963 | if (POINTER_TYPE_P (TREE_TYPE (itercnt))) | |
3964 | { | |
3965 | itercnt | |
3966 | = fold_convert (signed_type_for (TREE_TYPE (itercnt)), | |
3967 | itercnt); | |
3968 | n1 = fold_convert (TREE_TYPE (itercnt), n1); | |
3969 | } | |
3970 | itercnt = fold_build2 (MINUS_EXPR, TREE_TYPE (itercnt), | |
3971 | itercnt, n1); | |
3972 | itercnt = fold_build2 (EXACT_DIV_EXPR, TREE_TYPE (itercnt), | |
3973 | itercnt, fd->loop.step); | |
3974 | itercnt = force_gimple_operand_gsi (&gsi, itercnt, true, | |
3975 | NULL_TREE, false, | |
3976 | GSI_CONTINUE_LINKING); | |
3977 | } | |
3978 | a = fold_build2 (MULT_EXPR, type, | |
3979 | fold_convert (type, itercnt), | |
3980 | fold_convert (type, OMP_CLAUSE_LINEAR_STEP (c))); | |
3981 | t = fold_build2 (type == TREE_TYPE (t) ? PLUS_EXPR | |
3982 | : POINTER_PLUS_EXPR, TREE_TYPE (t), v, a); | |
3983 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
3984 | false, GSI_CONTINUE_LINKING); | |
3985 | assign_stmt = gimple_build_assign (dest, t); | |
3986 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
3987 | } | |
3988 | if (fd->collapse > 1) | |
aed3ab25 | 3989 | expand_omp_for_init_vars (fd, &gsi, counts, NULL, inner_stmt, startvar); |
629b3d75 MJ |
3990 | |
3991 | if (fd->ordered) | |
3992 | { | |
3993 | /* Until now, counts array contained number of iterations or | |
3994 | variable containing it for ith loop. From now on, we need | |
3995 | those counts only for collapsed loops, and only for the 2nd | |
3996 | till the last collapsed one. Move those one element earlier, | |
3997 | we'll use counts[fd->collapse - 1] for the first source/sink | |
3998 | iteration counter and so on and counts[fd->ordered] | |
3999 | as the array holding the current counter values for | |
4000 | depend(source). */ | |
4001 | if (fd->collapse > 1) | |
4002 | memmove (counts, counts + 1, (fd->collapse - 1) * sizeof (counts[0])); | |
4003 | if (broken_loop) | |
4004 | { | |
4005 | int i; | |
4006 | for (i = fd->collapse; i < fd->ordered; i++) | |
4007 | { | |
4008 | tree type = TREE_TYPE (fd->loops[i].v); | |
4009 | tree this_cond | |
4010 | = fold_build2 (fd->loops[i].cond_code, boolean_type_node, | |
4011 | fold_convert (type, fd->loops[i].n1), | |
4012 | fold_convert (type, fd->loops[i].n2)); | |
4013 | if (!integer_onep (this_cond)) | |
4014 | break; | |
4015 | } | |
4016 | if (i < fd->ordered) | |
4017 | { | |
4018 | cont_bb | |
4019 | = create_empty_bb (EXIT_BLOCK_PTR_FOR_FN (cfun)->prev_bb); | |
4020 | add_bb_to_loop (cont_bb, l1_bb->loop_father); | |
4021 | gimple_stmt_iterator gsi = gsi_after_labels (cont_bb); | |
4022 | gimple *g = gimple_build_omp_continue (fd->loop.v, fd->loop.v); | |
4023 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
4024 | make_edge (cont_bb, l3_bb, EDGE_FALLTHRU); | |
4025 | make_edge (cont_bb, l1_bb, 0); | |
4026 | l2_bb = create_empty_bb (cont_bb); | |
4027 | broken_loop = false; | |
4028 | } | |
4029 | } | |
4030 | expand_omp_ordered_source_sink (region, fd, counts, cont_bb); | |
4031 | cont_bb = expand_omp_for_ordered_loops (fd, counts, cont_bb, l1_bb, | |
4032 | ordered_lastprivate); | |
4033 | if (counts[fd->collapse - 1]) | |
4034 | { | |
4035 | gcc_assert (fd->collapse == 1); | |
4036 | gsi = gsi_last_bb (l0_bb); | |
4037 | expand_omp_build_assign (&gsi, counts[fd->collapse - 1], | |
4038 | istart0, true); | |
4039 | gsi = gsi_last_bb (cont_bb); | |
4040 | t = fold_build2 (PLUS_EXPR, fd->iter_type, counts[fd->collapse - 1], | |
4041 | build_int_cst (fd->iter_type, 1)); | |
4042 | expand_omp_build_assign (&gsi, counts[fd->collapse - 1], t); | |
4043 | tree aref = build4 (ARRAY_REF, fd->iter_type, counts[fd->ordered], | |
4044 | size_zero_node, NULL_TREE, NULL_TREE); | |
4045 | expand_omp_build_assign (&gsi, aref, counts[fd->collapse - 1]); | |
4046 | t = counts[fd->collapse - 1]; | |
4047 | } | |
4048 | else if (fd->collapse > 1) | |
4049 | t = fd->loop.v; | |
4050 | else | |
4051 | { | |
4052 | t = fold_build2 (MINUS_EXPR, TREE_TYPE (fd->loops[0].v), | |
4053 | fd->loops[0].v, fd->loops[0].n1); | |
4054 | t = fold_convert (fd->iter_type, t); | |
4055 | } | |
4056 | gsi = gsi_last_bb (l0_bb); | |
4057 | tree aref = build4 (ARRAY_REF, fd->iter_type, counts[fd->ordered], | |
4058 | size_zero_node, NULL_TREE, NULL_TREE); | |
4059 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
4060 | false, GSI_CONTINUE_LINKING); | |
4061 | expand_omp_build_assign (&gsi, aref, t, true); | |
4062 | } | |
4063 | ||
4064 | if (!broken_loop) | |
4065 | { | |
4066 | /* Code to control the increment and predicate for the sequential | |
4067 | loop goes in the CONT_BB. */ | |
65f4b875 | 4068 | gsi = gsi_last_nondebug_bb (cont_bb); |
629b3d75 MJ |
4069 | gomp_continue *cont_stmt = as_a <gomp_continue *> (gsi_stmt (gsi)); |
4070 | gcc_assert (gimple_code (cont_stmt) == GIMPLE_OMP_CONTINUE); | |
4071 | vmain = gimple_omp_continue_control_use (cont_stmt); | |
4072 | vback = gimple_omp_continue_control_def (cont_stmt); | |
4073 | ||
7855700e JJ |
4074 | if (cond_var) |
4075 | { | |
4076 | tree itype = TREE_TYPE (cond_var); | |
4077 | tree t2; | |
4078 | if ((fd->ordered && fd->collapse == 1) | |
4079 | || bias | |
4080 | || POINTER_TYPE_P (type) | |
4081 | || TREE_CODE (fd->loop.n1) != INTEGER_CST | |
4082 | || fd->loop.cond_code != LT_EXPR) | |
4083 | t2 = build_int_cst (itype, 1); | |
4084 | else | |
4085 | t2 = fold_convert (itype, fd->loop.step); | |
4086 | t2 = fold_build2 (PLUS_EXPR, itype, cond_var, t2); | |
4087 | t2 = force_gimple_operand_gsi (&gsi, t2, false, | |
4088 | NULL_TREE, true, GSI_SAME_STMT); | |
4089 | assign_stmt = gimple_build_assign (cond_var, t2); | |
4090 | gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT); | |
4091 | } | |
4092 | ||
629b3d75 MJ |
4093 | if (!gimple_omp_for_combined_p (fd->for_stmt)) |
4094 | { | |
4095 | if (POINTER_TYPE_P (type)) | |
4096 | t = fold_build_pointer_plus (vmain, fd->loop.step); | |
4097 | else | |
4098 | t = fold_build2 (PLUS_EXPR, type, vmain, fd->loop.step); | |
4099 | t = force_gimple_operand_gsi (&gsi, t, | |
4100 | DECL_P (vback) | |
4101 | && TREE_ADDRESSABLE (vback), | |
4102 | NULL_TREE, true, GSI_SAME_STMT); | |
4103 | assign_stmt = gimple_build_assign (vback, t); | |
4104 | gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT); | |
4105 | ||
4106 | if (fd->ordered && counts[fd->collapse - 1] == NULL_TREE) | |
4107 | { | |
d1ffbd43 | 4108 | tree tem; |
629b3d75 | 4109 | if (fd->collapse > 1) |
d1ffbd43 | 4110 | tem = fd->loop.v; |
629b3d75 MJ |
4111 | else |
4112 | { | |
d1ffbd43 JJ |
4113 | tem = fold_build2 (MINUS_EXPR, TREE_TYPE (fd->loops[0].v), |
4114 | fd->loops[0].v, fd->loops[0].n1); | |
4115 | tem = fold_convert (fd->iter_type, tem); | |
629b3d75 MJ |
4116 | } |
4117 | tree aref = build4 (ARRAY_REF, fd->iter_type, | |
4118 | counts[fd->ordered], size_zero_node, | |
4119 | NULL_TREE, NULL_TREE); | |
d1ffbd43 JJ |
4120 | tem = force_gimple_operand_gsi (&gsi, tem, true, NULL_TREE, |
4121 | true, GSI_SAME_STMT); | |
4122 | expand_omp_build_assign (&gsi, aref, tem); | |
629b3d75 MJ |
4123 | } |
4124 | ||
4125 | t = build2 (fd->loop.cond_code, boolean_type_node, | |
4126 | DECL_P (vback) && TREE_ADDRESSABLE (vback) ? t : vback, | |
4127 | iend); | |
4128 | gcond *cond_stmt = gimple_build_cond_empty (t); | |
4129 | gsi_insert_before (&gsi, cond_stmt, GSI_SAME_STMT); | |
4130 | } | |
4131 | ||
4132 | /* Remove GIMPLE_OMP_CONTINUE. */ | |
4133 | gsi_remove (&gsi, true); | |
4134 | ||
4135 | if (fd->collapse > 1 && !gimple_omp_for_combined_p (fd->for_stmt)) | |
aed3ab25 | 4136 | collapse_bb = extract_omp_for_update_vars (fd, NULL, cont_bb, l1_bb); |
629b3d75 MJ |
4137 | |
4138 | /* Emit code to get the next parallel iteration in L2_BB. */ | |
4139 | gsi = gsi_start_bb (l2_bb); | |
4140 | ||
4141 | t = build_call_expr (builtin_decl_explicit (next_fn), 2, | |
4142 | build_fold_addr_expr (istart0), | |
4143 | build_fold_addr_expr (iend0)); | |
4144 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
4145 | false, GSI_CONTINUE_LINKING); | |
4146 | if (TREE_TYPE (t) != boolean_type_node) | |
4147 | t = fold_build2 (NE_EXPR, boolean_type_node, | |
4148 | t, build_int_cst (TREE_TYPE (t), 0)); | |
4149 | gcond *cond_stmt = gimple_build_cond_empty (t); | |
4150 | gsi_insert_after (&gsi, cond_stmt, GSI_CONTINUE_LINKING); | |
4151 | } | |
4152 | ||
4153 | /* Add the loop cleanup function. */ | |
65f4b875 | 4154 | gsi = gsi_last_nondebug_bb (exit_bb); |
629b3d75 MJ |
4155 | if (gimple_omp_return_nowait_p (gsi_stmt (gsi))) |
4156 | t = builtin_decl_explicit (BUILT_IN_GOMP_LOOP_END_NOWAIT); | |
4157 | else if (gimple_omp_return_lhs (gsi_stmt (gsi))) | |
4158 | t = builtin_decl_explicit (BUILT_IN_GOMP_LOOP_END_CANCEL); | |
4159 | else | |
4160 | t = builtin_decl_explicit (BUILT_IN_GOMP_LOOP_END); | |
4161 | gcall *call_stmt = gimple_build_call (t, 0); | |
629b3d75 MJ |
4162 | if (fd->ordered) |
4163 | { | |
4164 | tree arr = counts[fd->ordered]; | |
25b45c7c | 4165 | tree clobber = build_clobber (TREE_TYPE (arr)); |
629b3d75 MJ |
4166 | gsi_insert_after (&gsi, gimple_build_assign (arr, clobber), |
4167 | GSI_SAME_STMT); | |
4168 | } | |
28567c40 JJ |
4169 | if (gimple_omp_return_lhs (gsi_stmt (gsi))) |
4170 | { | |
4171 | gimple_call_set_lhs (call_stmt, gimple_omp_return_lhs (gsi_stmt (gsi))); | |
4172 | if (fd->have_reductemp) | |
4173 | { | |
4174 | gimple *g = gimple_build_assign (reductions, NOP_EXPR, | |
4175 | gimple_call_lhs (call_stmt)); | |
4176 | gsi_insert_after (&gsi, g, GSI_SAME_STMT); | |
4177 | } | |
4178 | } | |
4179 | gsi_insert_after (&gsi, call_stmt, GSI_SAME_STMT); | |
629b3d75 MJ |
4180 | gsi_remove (&gsi, true); |
4181 | ||
4182 | /* Connect the new blocks. */ | |
4183 | find_edge (entry_bb, l0_bb)->flags = EDGE_TRUE_VALUE; | |
4184 | find_edge (entry_bb, l3_bb)->flags = EDGE_FALSE_VALUE; | |
4185 | ||
4186 | if (!broken_loop) | |
4187 | { | |
4188 | gimple_seq phis; | |
4189 | ||
4190 | e = find_edge (cont_bb, l3_bb); | |
4191 | ne = make_edge (l2_bb, l3_bb, EDGE_FALSE_VALUE); | |
4192 | ||
4193 | phis = phi_nodes (l3_bb); | |
4194 | for (gsi = gsi_start (phis); !gsi_end_p (gsi); gsi_next (&gsi)) | |
4195 | { | |
4196 | gimple *phi = gsi_stmt (gsi); | |
4197 | SET_USE (PHI_ARG_DEF_PTR_FROM_EDGE (phi, ne), | |
4198 | PHI_ARG_DEF_FROM_EDGE (phi, e)); | |
4199 | } | |
4200 | remove_edge (e); | |
4201 | ||
4202 | make_edge (cont_bb, l2_bb, EDGE_FALSE_VALUE); | |
4203 | e = find_edge (cont_bb, l1_bb); | |
4204 | if (e == NULL) | |
4205 | { | |
4206 | e = BRANCH_EDGE (cont_bb); | |
4207 | gcc_assert (single_succ (e->dest) == l1_bb); | |
4208 | } | |
4209 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
4210 | { | |
4211 | remove_edge (e); | |
4212 | e = NULL; | |
4213 | } | |
4214 | else if (fd->collapse > 1) | |
4215 | { | |
4216 | remove_edge (e); | |
4217 | e = make_edge (cont_bb, collapse_bb, EDGE_TRUE_VALUE); | |
4218 | } | |
4219 | else | |
4220 | e->flags = EDGE_TRUE_VALUE; | |
4221 | if (e) | |
4222 | { | |
357067f2 JH |
4223 | e->probability = profile_probability::guessed_always ().apply_scale (7, 8); |
4224 | find_edge (cont_bb, l2_bb)->probability = e->probability.invert (); | |
629b3d75 MJ |
4225 | } |
4226 | else | |
4227 | { | |
4228 | e = find_edge (cont_bb, l2_bb); | |
4229 | e->flags = EDGE_FALLTHRU; | |
4230 | } | |
4231 | make_edge (l2_bb, l0_bb, EDGE_TRUE_VALUE); | |
4232 | ||
4233 | if (gimple_in_ssa_p (cfun)) | |
4234 | { | |
4235 | /* Add phis to the outer loop that connect to the phis in the inner, | |
4236 | original loop, and move the loop entry value of the inner phi to | |
4237 | the loop entry value of the outer phi. */ | |
4238 | gphi_iterator psi; | |
4239 | for (psi = gsi_start_phis (l3_bb); !gsi_end_p (psi); gsi_next (&psi)) | |
4240 | { | |
620e594b | 4241 | location_t locus; |
629b3d75 MJ |
4242 | gphi *nphi; |
4243 | gphi *exit_phi = psi.phi (); | |
4244 | ||
164485b5 JJ |
4245 | if (virtual_operand_p (gimple_phi_result (exit_phi))) |
4246 | continue; | |
4247 | ||
629b3d75 MJ |
4248 | edge l2_to_l3 = find_edge (l2_bb, l3_bb); |
4249 | tree exit_res = PHI_ARG_DEF_FROM_EDGE (exit_phi, l2_to_l3); | |
4250 | ||
4251 | basic_block latch = BRANCH_EDGE (cont_bb)->dest; | |
4252 | edge latch_to_l1 = find_edge (latch, l1_bb); | |
4253 | gphi *inner_phi | |
4254 | = find_phi_with_arg_on_edge (exit_res, latch_to_l1); | |
4255 | ||
4256 | tree t = gimple_phi_result (exit_phi); | |
4257 | tree new_res = copy_ssa_name (t, NULL); | |
4258 | nphi = create_phi_node (new_res, l0_bb); | |
4259 | ||
4260 | edge l0_to_l1 = find_edge (l0_bb, l1_bb); | |
4261 | t = PHI_ARG_DEF_FROM_EDGE (inner_phi, l0_to_l1); | |
4262 | locus = gimple_phi_arg_location_from_edge (inner_phi, l0_to_l1); | |
4263 | edge entry_to_l0 = find_edge (entry_bb, l0_bb); | |
4264 | add_phi_arg (nphi, t, entry_to_l0, locus); | |
4265 | ||
4266 | edge l2_to_l0 = find_edge (l2_bb, l0_bb); | |
4267 | add_phi_arg (nphi, exit_res, l2_to_l0, UNKNOWN_LOCATION); | |
4268 | ||
4269 | add_phi_arg (inner_phi, new_res, l0_to_l1, UNKNOWN_LOCATION); | |
164485b5 | 4270 | } |
629b3d75 MJ |
4271 | } |
4272 | ||
4273 | set_immediate_dominator (CDI_DOMINATORS, l2_bb, | |
4274 | recompute_dominator (CDI_DOMINATORS, l2_bb)); | |
4275 | set_immediate_dominator (CDI_DOMINATORS, l3_bb, | |
4276 | recompute_dominator (CDI_DOMINATORS, l3_bb)); | |
4277 | set_immediate_dominator (CDI_DOMINATORS, l0_bb, | |
4278 | recompute_dominator (CDI_DOMINATORS, l0_bb)); | |
4279 | set_immediate_dominator (CDI_DOMINATORS, l1_bb, | |
4280 | recompute_dominator (CDI_DOMINATORS, l1_bb)); | |
4281 | ||
4282 | /* We enter expand_omp_for_generic with a loop. This original loop may | |
4283 | have its own loop struct, or it may be part of an outer loop struct | |
4284 | (which may be the fake loop). */ | |
99b1c316 | 4285 | class loop *outer_loop = entry_bb->loop_father; |
629b3d75 MJ |
4286 | bool orig_loop_has_loop_struct = l1_bb->loop_father != outer_loop; |
4287 | ||
4288 | add_bb_to_loop (l2_bb, outer_loop); | |
4289 | ||
4290 | /* We've added a new loop around the original loop. Allocate the | |
4291 | corresponding loop struct. */ | |
99b1c316 | 4292 | class loop *new_loop = alloc_loop (); |
629b3d75 MJ |
4293 | new_loop->header = l0_bb; |
4294 | new_loop->latch = l2_bb; | |
4295 | add_loop (new_loop, outer_loop); | |
4296 | ||
4297 | /* Allocate a loop structure for the original loop unless we already | |
4298 | had one. */ | |
4299 | if (!orig_loop_has_loop_struct | |
4300 | && !gimple_omp_for_combined_p (fd->for_stmt)) | |
4301 | { | |
99b1c316 | 4302 | class loop *orig_loop = alloc_loop (); |
629b3d75 MJ |
4303 | orig_loop->header = l1_bb; |
4304 | /* The loop may have multiple latches. */ | |
4305 | add_loop (orig_loop, new_loop); | |
4306 | } | |
4307 | } | |
4308 | } | |
4309 | ||
2f6bb511 JJ |
4310 | /* Helper function for expand_omp_for_static_nochunk. If PTR is NULL, |
4311 | compute needed allocation size. If !ALLOC of team allocations, | |
4312 | if ALLOC of thread allocation. SZ is the initial needed size for | |
4313 | other purposes, ALLOC_ALIGN guaranteed alignment of allocation in bytes, | |
4314 | CNT number of elements of each array, for !ALLOC this is | |
4315 | omp_get_num_threads (), for ALLOC number of iterations handled by the | |
4316 | current thread. If PTR is non-NULL, it is the start of the allocation | |
4317 | and this routine shall assign to OMP_CLAUSE_DECL (c) of those _scantemp_ | |
4318 | clauses pointers to the corresponding arrays. */ | |
4319 | ||
4320 | static tree | |
4321 | expand_omp_scantemp_alloc (tree clauses, tree ptr, unsigned HOST_WIDE_INT sz, | |
4322 | unsigned HOST_WIDE_INT alloc_align, tree cnt, | |
4323 | gimple_stmt_iterator *gsi, bool alloc) | |
4324 | { | |
4325 | tree eltsz = NULL_TREE; | |
4326 | unsigned HOST_WIDE_INT preval = 0; | |
4327 | if (ptr && sz) | |
4328 | ptr = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (ptr), | |
4329 | ptr, size_int (sz)); | |
4330 | for (tree c = clauses; c; c = OMP_CLAUSE_CHAIN (c)) | |
4331 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE__SCANTEMP_ | |
4332 | && !OMP_CLAUSE__SCANTEMP__CONTROL (c) | |
4333 | && (!OMP_CLAUSE__SCANTEMP__ALLOC (c)) != alloc) | |
4334 | { | |
4335 | tree pointee_type = TREE_TYPE (TREE_TYPE (OMP_CLAUSE_DECL (c))); | |
4336 | unsigned HOST_WIDE_INT al = TYPE_ALIGN_UNIT (pointee_type); | |
4337 | if (tree_fits_uhwi_p (TYPE_SIZE_UNIT (pointee_type))) | |
4338 | { | |
4339 | unsigned HOST_WIDE_INT szl | |
4340 | = tree_to_uhwi (TYPE_SIZE_UNIT (pointee_type)); | |
4341 | szl = least_bit_hwi (szl); | |
4342 | if (szl) | |
4343 | al = MIN (al, szl); | |
4344 | } | |
4345 | if (ptr == NULL_TREE) | |
4346 | { | |
4347 | if (eltsz == NULL_TREE) | |
4348 | eltsz = TYPE_SIZE_UNIT (pointee_type); | |
4349 | else | |
4350 | eltsz = size_binop (PLUS_EXPR, eltsz, | |
4351 | TYPE_SIZE_UNIT (pointee_type)); | |
4352 | } | |
4353 | if (preval == 0 && al <= alloc_align) | |
4354 | { | |
4355 | unsigned HOST_WIDE_INT diff = ROUND_UP (sz, al) - sz; | |
4356 | sz += diff; | |
4357 | if (diff && ptr) | |
4358 | ptr = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (ptr), | |
4359 | ptr, size_int (diff)); | |
4360 | } | |
4361 | else if (al > preval) | |
4362 | { | |
4363 | if (ptr) | |
4364 | { | |
4365 | ptr = fold_convert (pointer_sized_int_node, ptr); | |
4366 | ptr = fold_build2 (PLUS_EXPR, pointer_sized_int_node, ptr, | |
4367 | build_int_cst (pointer_sized_int_node, | |
4368 | al - 1)); | |
4369 | ptr = fold_build2 (BIT_AND_EXPR, pointer_sized_int_node, ptr, | |
4370 | build_int_cst (pointer_sized_int_node, | |
4371 | -(HOST_WIDE_INT) al)); | |
4372 | ptr = fold_convert (ptr_type_node, ptr); | |
4373 | } | |
4374 | else | |
4375 | sz += al - 1; | |
4376 | } | |
4377 | if (tree_fits_uhwi_p (TYPE_SIZE_UNIT (pointee_type))) | |
4378 | preval = al; | |
4379 | else | |
4380 | preval = 1; | |
4381 | if (ptr) | |
4382 | { | |
4383 | expand_omp_build_assign (gsi, OMP_CLAUSE_DECL (c), ptr, false); | |
4384 | ptr = OMP_CLAUSE_DECL (c); | |
4385 | ptr = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (ptr), ptr, | |
4386 | size_binop (MULT_EXPR, cnt, | |
4387 | TYPE_SIZE_UNIT (pointee_type))); | |
4388 | } | |
4389 | } | |
4390 | ||
4391 | if (ptr == NULL_TREE) | |
4392 | { | |
4393 | eltsz = size_binop (MULT_EXPR, eltsz, cnt); | |
4394 | if (sz) | |
4395 | eltsz = size_binop (PLUS_EXPR, eltsz, size_int (sz)); | |
4396 | return eltsz; | |
4397 | } | |
4398 | else | |
4399 | return ptr; | |
4400 | } | |
4401 | ||
629b3d75 MJ |
4402 | /* A subroutine of expand_omp_for. Generate code for a parallel |
4403 | loop with static schedule and no specified chunk size. Given | |
4404 | parameters: | |
4405 | ||
4406 | for (V = N1; V cond N2; V += STEP) BODY; | |
4407 | ||
4408 | where COND is "<" or ">", we generate pseudocode | |
4409 | ||
4410 | if ((__typeof (V)) -1 > 0 && N2 cond N1) goto L2; | |
4411 | if (cond is <) | |
4412 | adj = STEP - 1; | |
4413 | else | |
4414 | adj = STEP + 1; | |
4415 | if ((__typeof (V)) -1 > 0 && cond is >) | |
4416 | n = -(adj + N2 - N1) / -STEP; | |
4417 | else | |
4418 | n = (adj + N2 - N1) / STEP; | |
4419 | q = n / nthreads; | |
4420 | tt = n % nthreads; | |
4421 | if (threadid < tt) goto L3; else goto L4; | |
4422 | L3: | |
4423 | tt = 0; | |
4424 | q = q + 1; | |
4425 | L4: | |
4426 | s0 = q * threadid + tt; | |
4427 | e0 = s0 + q; | |
4428 | V = s0 * STEP + N1; | |
4429 | if (s0 >= e0) goto L2; else goto L0; | |
4430 | L0: | |
4431 | e = e0 * STEP + N1; | |
4432 | L1: | |
4433 | BODY; | |
4434 | V += STEP; | |
4435 | if (V cond e) goto L1; | |
4436 | L2: | |
4437 | */ | |
4438 | ||
4439 | static void | |
4440 | expand_omp_for_static_nochunk (struct omp_region *region, | |
4441 | struct omp_for_data *fd, | |
4442 | gimple *inner_stmt) | |
4443 | { | |
2f6bb511 | 4444 | tree n, q, s0, e0, e, t, tt, nthreads = NULL_TREE, threadid; |
629b3d75 MJ |
4445 | tree type, itype, vmain, vback; |
4446 | basic_block entry_bb, second_bb, third_bb, exit_bb, seq_start_bb; | |
4447 | basic_block body_bb, cont_bb, collapse_bb = NULL; | |
2f6bb511 JJ |
4448 | basic_block fin_bb, fourth_bb = NULL, fifth_bb = NULL, sixth_bb = NULL; |
4449 | basic_block exit1_bb = NULL, exit2_bb = NULL, exit3_bb = NULL; | |
6c7ae8c5 | 4450 | gimple_stmt_iterator gsi, gsip; |
629b3d75 MJ |
4451 | edge ep; |
4452 | bool broken_loop = region->cont == NULL; | |
4453 | tree *counts = NULL; | |
4454 | tree n1, n2, step; | |
28567c40 | 4455 | tree reductions = NULL_TREE; |
8221c30b | 4456 | tree cond_var = NULL_TREE, condtemp = NULL_TREE; |
629b3d75 MJ |
4457 | |
4458 | itype = type = TREE_TYPE (fd->loop.v); | |
4459 | if (POINTER_TYPE_P (type)) | |
4460 | itype = signed_type_for (type); | |
4461 | ||
4462 | entry_bb = region->entry; | |
4463 | cont_bb = region->cont; | |
4464 | gcc_assert (EDGE_COUNT (entry_bb->succs) == 2); | |
4465 | fin_bb = BRANCH_EDGE (entry_bb)->dest; | |
4466 | gcc_assert (broken_loop | |
4467 | || (fin_bb == FALLTHRU_EDGE (cont_bb)->dest)); | |
4468 | seq_start_bb = split_edge (FALLTHRU_EDGE (entry_bb)); | |
4469 | body_bb = single_succ (seq_start_bb); | |
4470 | if (!broken_loop) | |
4471 | { | |
4472 | gcc_assert (BRANCH_EDGE (cont_bb)->dest == body_bb | |
4473 | || single_succ (BRANCH_EDGE (cont_bb)->dest) == body_bb); | |
4474 | gcc_assert (EDGE_COUNT (cont_bb->succs) == 2); | |
4475 | } | |
4476 | exit_bb = region->exit; | |
4477 | ||
4478 | /* Iteration space partitioning goes in ENTRY_BB. */ | |
65f4b875 | 4479 | gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 | 4480 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); |
6c7ae8c5 JJ |
4481 | gsip = gsi; |
4482 | gsi_prev (&gsip); | |
629b3d75 MJ |
4483 | |
4484 | if (fd->collapse > 1) | |
4485 | { | |
4486 | int first_zero_iter = -1, dummy = -1; | |
4487 | basic_block l2_dom_bb = NULL, dummy_bb = NULL; | |
4488 | ||
4489 | counts = XALLOCAVEC (tree, fd->collapse); | |
4490 | expand_omp_for_init_counts (fd, &gsi, entry_bb, counts, | |
4491 | fin_bb, first_zero_iter, | |
4492 | dummy_bb, dummy, l2_dom_bb); | |
4493 | t = NULL_TREE; | |
4494 | } | |
4495 | else if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
4496 | t = integer_one_node; | |
4497 | else | |
4498 | t = fold_binary (fd->loop.cond_code, boolean_type_node, | |
4499 | fold_convert (type, fd->loop.n1), | |
4500 | fold_convert (type, fd->loop.n2)); | |
4501 | if (fd->collapse == 1 | |
4502 | && TYPE_UNSIGNED (type) | |
4503 | && (t == NULL_TREE || !integer_onep (t))) | |
4504 | { | |
4505 | n1 = fold_convert (type, unshare_expr (fd->loop.n1)); | |
4506 | n1 = force_gimple_operand_gsi (&gsi, n1, true, NULL_TREE, | |
4507 | true, GSI_SAME_STMT); | |
4508 | n2 = fold_convert (type, unshare_expr (fd->loop.n2)); | |
4509 | n2 = force_gimple_operand_gsi (&gsi, n2, true, NULL_TREE, | |
4510 | true, GSI_SAME_STMT); | |
4511 | gcond *cond_stmt = gimple_build_cond (fd->loop.cond_code, n1, n2, | |
6c7ae8c5 | 4512 | NULL_TREE, NULL_TREE); |
629b3d75 MJ |
4513 | gsi_insert_before (&gsi, cond_stmt, GSI_SAME_STMT); |
4514 | if (walk_tree (gimple_cond_lhs_ptr (cond_stmt), | |
4515 | expand_omp_regimplify_p, NULL, NULL) | |
4516 | || walk_tree (gimple_cond_rhs_ptr (cond_stmt), | |
4517 | expand_omp_regimplify_p, NULL, NULL)) | |
4518 | { | |
4519 | gsi = gsi_for_stmt (cond_stmt); | |
4520 | gimple_regimplify_operands (cond_stmt, &gsi); | |
4521 | } | |
4522 | ep = split_block (entry_bb, cond_stmt); | |
4523 | ep->flags = EDGE_TRUE_VALUE; | |
4524 | entry_bb = ep->dest; | |
357067f2 | 4525 | ep->probability = profile_probability::very_likely (); |
629b3d75 | 4526 | ep = make_edge (ep->src, fin_bb, EDGE_FALSE_VALUE); |
357067f2 | 4527 | ep->probability = profile_probability::very_unlikely (); |
629b3d75 MJ |
4528 | if (gimple_in_ssa_p (cfun)) |
4529 | { | |
4530 | int dest_idx = find_edge (entry_bb, fin_bb)->dest_idx; | |
4531 | for (gphi_iterator gpi = gsi_start_phis (fin_bb); | |
4532 | !gsi_end_p (gpi); gsi_next (&gpi)) | |
4533 | { | |
4534 | gphi *phi = gpi.phi (); | |
4535 | add_phi_arg (phi, gimple_phi_arg_def (phi, dest_idx), | |
4536 | ep, UNKNOWN_LOCATION); | |
4537 | } | |
4538 | } | |
4539 | gsi = gsi_last_bb (entry_bb); | |
4540 | } | |
4541 | ||
8221c30b JJ |
4542 | if (fd->lastprivate_conditional) |
4543 | { | |
4544 | tree clauses = gimple_omp_for_clauses (fd->for_stmt); | |
4545 | tree c = omp_find_clause (clauses, OMP_CLAUSE__CONDTEMP_); | |
4546 | if (fd->have_pointer_condtemp) | |
4547 | condtemp = OMP_CLAUSE_DECL (c); | |
4548 | c = omp_find_clause (OMP_CLAUSE_CHAIN (c), OMP_CLAUSE__CONDTEMP_); | |
4549 | cond_var = OMP_CLAUSE_DECL (c); | |
4550 | } | |
2f6bb511 | 4551 | if (fd->have_reductemp |
2f03073f JJ |
4552 | /* For scan, we don't want to reinitialize condtemp before the |
4553 | second loop. */ | |
4554 | || (fd->have_pointer_condtemp && !fd->have_scantemp) | |
2f6bb511 | 4555 | || fd->have_nonctrl_scantemp) |
28567c40 JJ |
4556 | { |
4557 | tree t1 = build_int_cst (long_integer_type_node, 0); | |
4558 | tree t2 = build_int_cst (long_integer_type_node, 1); | |
4559 | tree t3 = build_int_cstu (long_integer_type_node, | |
4560 | (HOST_WIDE_INT_1U << 31) + 1); | |
4561 | tree clauses = gimple_omp_for_clauses (fd->for_stmt); | |
6c7ae8c5 JJ |
4562 | gimple_stmt_iterator gsi2 = gsi_none (); |
4563 | gimple *g = NULL; | |
4564 | tree mem = null_pointer_node, memv = NULL_TREE; | |
2f6bb511 JJ |
4565 | unsigned HOST_WIDE_INT condtemp_sz = 0; |
4566 | unsigned HOST_WIDE_INT alloc_align = 0; | |
6c7ae8c5 JJ |
4567 | if (fd->have_reductemp) |
4568 | { | |
2f6bb511 | 4569 | gcc_assert (!fd->have_nonctrl_scantemp); |
6c7ae8c5 JJ |
4570 | tree c = omp_find_clause (clauses, OMP_CLAUSE__REDUCTEMP_); |
4571 | reductions = OMP_CLAUSE_DECL (c); | |
4572 | gcc_assert (TREE_CODE (reductions) == SSA_NAME); | |
4573 | g = SSA_NAME_DEF_STMT (reductions); | |
4574 | reductions = gimple_assign_rhs1 (g); | |
4575 | OMP_CLAUSE_DECL (c) = reductions; | |
4576 | gsi2 = gsi_for_stmt (g); | |
4577 | } | |
4578 | else | |
4579 | { | |
4580 | if (gsi_end_p (gsip)) | |
4581 | gsi2 = gsi_after_labels (region->entry); | |
4582 | else | |
4583 | gsi2 = gsip; | |
4584 | reductions = null_pointer_node; | |
4585 | } | |
2f6bb511 | 4586 | if (fd->have_pointer_condtemp || fd->have_nonctrl_scantemp) |
6c7ae8c5 | 4587 | { |
2f6bb511 JJ |
4588 | tree type; |
4589 | if (fd->have_pointer_condtemp) | |
4590 | type = TREE_TYPE (condtemp); | |
4591 | else | |
4592 | type = ptr_type_node; | |
6c7ae8c5 JJ |
4593 | memv = create_tmp_var (type); |
4594 | TREE_ADDRESSABLE (memv) = 1; | |
2f6bb511 JJ |
4595 | unsigned HOST_WIDE_INT sz = 0; |
4596 | tree size = NULL_TREE; | |
4597 | if (fd->have_pointer_condtemp) | |
4598 | { | |
4599 | sz = tree_to_uhwi (TYPE_SIZE_UNIT (TREE_TYPE (type))); | |
4600 | sz *= fd->lastprivate_conditional; | |
4601 | condtemp_sz = sz; | |
4602 | } | |
4603 | if (fd->have_nonctrl_scantemp) | |
4604 | { | |
4605 | nthreads = builtin_decl_explicit (BUILT_IN_OMP_GET_NUM_THREADS); | |
4606 | gimple *g = gimple_build_call (nthreads, 0); | |
4607 | nthreads = create_tmp_var (integer_type_node); | |
4608 | gimple_call_set_lhs (g, nthreads); | |
4609 | gsi_insert_before (&gsi2, g, GSI_SAME_STMT); | |
4610 | nthreads = fold_convert (sizetype, nthreads); | |
4611 | alloc_align = TYPE_ALIGN_UNIT (long_long_integer_type_node); | |
4612 | size = expand_omp_scantemp_alloc (clauses, NULL_TREE, sz, | |
4613 | alloc_align, nthreads, NULL, | |
4614 | false); | |
4615 | size = fold_convert (type, size); | |
4616 | } | |
4617 | else | |
4618 | size = build_int_cst (type, sz); | |
4619 | expand_omp_build_assign (&gsi2, memv, size, false); | |
6c7ae8c5 JJ |
4620 | mem = build_fold_addr_expr (memv); |
4621 | } | |
28567c40 JJ |
4622 | tree t |
4623 | = build_call_expr (builtin_decl_explicit (BUILT_IN_GOMP_LOOP_START), | |
4624 | 9, t1, t2, t2, t3, t1, null_pointer_node, | |
6c7ae8c5 | 4625 | null_pointer_node, reductions, mem); |
28567c40 JJ |
4626 | force_gimple_operand_gsi (&gsi2, t, true, NULL_TREE, |
4627 | true, GSI_SAME_STMT); | |
8221c30b | 4628 | if (fd->have_pointer_condtemp) |
6c7ae8c5 | 4629 | expand_omp_build_assign (&gsi2, condtemp, memv, false); |
2f6bb511 JJ |
4630 | if (fd->have_nonctrl_scantemp) |
4631 | { | |
4632 | tree ptr = fd->have_pointer_condtemp ? condtemp : memv; | |
4633 | expand_omp_scantemp_alloc (clauses, ptr, condtemp_sz, | |
4634 | alloc_align, nthreads, &gsi2, false); | |
4635 | } | |
6c7ae8c5 JJ |
4636 | if (fd->have_reductemp) |
4637 | { | |
4638 | gsi_remove (&gsi2, true); | |
4639 | release_ssa_name (gimple_assign_lhs (g)); | |
4640 | } | |
28567c40 | 4641 | } |
629b3d75 MJ |
4642 | switch (gimple_omp_for_kind (fd->for_stmt)) |
4643 | { | |
4644 | case GF_OMP_FOR_KIND_FOR: | |
4645 | nthreads = builtin_decl_explicit (BUILT_IN_OMP_GET_NUM_THREADS); | |
4646 | threadid = builtin_decl_explicit (BUILT_IN_OMP_GET_THREAD_NUM); | |
4647 | break; | |
4648 | case GF_OMP_FOR_KIND_DISTRIBUTE: | |
4649 | nthreads = builtin_decl_explicit (BUILT_IN_OMP_GET_NUM_TEAMS); | |
4650 | threadid = builtin_decl_explicit (BUILT_IN_OMP_GET_TEAM_NUM); | |
4651 | break; | |
4652 | default: | |
4653 | gcc_unreachable (); | |
4654 | } | |
4655 | nthreads = build_call_expr (nthreads, 0); | |
4656 | nthreads = fold_convert (itype, nthreads); | |
4657 | nthreads = force_gimple_operand_gsi (&gsi, nthreads, true, NULL_TREE, | |
4658 | true, GSI_SAME_STMT); | |
4659 | threadid = build_call_expr (threadid, 0); | |
4660 | threadid = fold_convert (itype, threadid); | |
4661 | threadid = force_gimple_operand_gsi (&gsi, threadid, true, NULL_TREE, | |
4662 | true, GSI_SAME_STMT); | |
4663 | ||
4664 | n1 = fd->loop.n1; | |
4665 | n2 = fd->loop.n2; | |
4666 | step = fd->loop.step; | |
4667 | if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
4668 | { | |
4669 | tree innerc = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), | |
4670 | OMP_CLAUSE__LOOPTEMP_); | |
4671 | gcc_assert (innerc); | |
4672 | n1 = OMP_CLAUSE_DECL (innerc); | |
4673 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
4674 | OMP_CLAUSE__LOOPTEMP_); | |
4675 | gcc_assert (innerc); | |
4676 | n2 = OMP_CLAUSE_DECL (innerc); | |
4677 | } | |
4678 | n1 = force_gimple_operand_gsi (&gsi, fold_convert (type, n1), | |
4679 | true, NULL_TREE, true, GSI_SAME_STMT); | |
4680 | n2 = force_gimple_operand_gsi (&gsi, fold_convert (itype, n2), | |
4681 | true, NULL_TREE, true, GSI_SAME_STMT); | |
4682 | step = force_gimple_operand_gsi (&gsi, fold_convert (itype, step), | |
4683 | true, NULL_TREE, true, GSI_SAME_STMT); | |
4684 | ||
4685 | t = build_int_cst (itype, (fd->loop.cond_code == LT_EXPR ? -1 : 1)); | |
4686 | t = fold_build2 (PLUS_EXPR, itype, step, t); | |
4687 | t = fold_build2 (PLUS_EXPR, itype, t, n2); | |
4688 | t = fold_build2 (MINUS_EXPR, itype, t, fold_convert (itype, n1)); | |
4689 | if (TYPE_UNSIGNED (itype) && fd->loop.cond_code == GT_EXPR) | |
4690 | t = fold_build2 (TRUNC_DIV_EXPR, itype, | |
4691 | fold_build1 (NEGATE_EXPR, itype, t), | |
4692 | fold_build1 (NEGATE_EXPR, itype, step)); | |
4693 | else | |
4694 | t = fold_build2 (TRUNC_DIV_EXPR, itype, t, step); | |
4695 | t = fold_convert (itype, t); | |
4696 | n = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, true, GSI_SAME_STMT); | |
4697 | ||
4698 | q = create_tmp_reg (itype, "q"); | |
4699 | t = fold_build2 (TRUNC_DIV_EXPR, itype, n, nthreads); | |
4700 | t = force_gimple_operand_gsi (&gsi, t, false, NULL_TREE, true, GSI_SAME_STMT); | |
4701 | gsi_insert_before (&gsi, gimple_build_assign (q, t), GSI_SAME_STMT); | |
4702 | ||
4703 | tt = create_tmp_reg (itype, "tt"); | |
4704 | t = fold_build2 (TRUNC_MOD_EXPR, itype, n, nthreads); | |
4705 | t = force_gimple_operand_gsi (&gsi, t, false, NULL_TREE, true, GSI_SAME_STMT); | |
4706 | gsi_insert_before (&gsi, gimple_build_assign (tt, t), GSI_SAME_STMT); | |
4707 | ||
4708 | t = build2 (LT_EXPR, boolean_type_node, threadid, tt); | |
4709 | gcond *cond_stmt = gimple_build_cond_empty (t); | |
4710 | gsi_insert_before (&gsi, cond_stmt, GSI_SAME_STMT); | |
4711 | ||
4712 | second_bb = split_block (entry_bb, cond_stmt)->dest; | |
65f4b875 | 4713 | gsi = gsi_last_nondebug_bb (second_bb); |
629b3d75 MJ |
4714 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); |
4715 | ||
4716 | gsi_insert_before (&gsi, gimple_build_assign (tt, build_int_cst (itype, 0)), | |
4717 | GSI_SAME_STMT); | |
4718 | gassign *assign_stmt | |
4719 | = gimple_build_assign (q, PLUS_EXPR, q, build_int_cst (itype, 1)); | |
4720 | gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT); | |
4721 | ||
4722 | third_bb = split_block (second_bb, assign_stmt)->dest; | |
65f4b875 | 4723 | gsi = gsi_last_nondebug_bb (third_bb); |
629b3d75 MJ |
4724 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); |
4725 | ||
2f6bb511 JJ |
4726 | if (fd->have_nonctrl_scantemp) |
4727 | { | |
4728 | tree clauses = gimple_omp_for_clauses (fd->for_stmt); | |
4729 | tree controlp = NULL_TREE, controlb = NULL_TREE; | |
4730 | for (tree c = clauses; c; c = OMP_CLAUSE_CHAIN (c)) | |
4731 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE__SCANTEMP_ | |
4732 | && OMP_CLAUSE__SCANTEMP__CONTROL (c)) | |
4733 | { | |
4734 | if (TREE_TYPE (OMP_CLAUSE_DECL (c)) == boolean_type_node) | |
4735 | controlb = OMP_CLAUSE_DECL (c); | |
4736 | else | |
4737 | controlp = OMP_CLAUSE_DECL (c); | |
4738 | if (controlb && controlp) | |
4739 | break; | |
4740 | } | |
4741 | gcc_assert (controlp && controlb); | |
4742 | tree cnt = create_tmp_var (sizetype); | |
4743 | gimple *g = gimple_build_assign (cnt, NOP_EXPR, q); | |
4744 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
4745 | unsigned HOST_WIDE_INT alloc_align = TYPE_ALIGN_UNIT (ptr_type_node); | |
4746 | tree sz = expand_omp_scantemp_alloc (clauses, NULL_TREE, 0, | |
4747 | alloc_align, cnt, NULL, true); | |
4748 | tree size = create_tmp_var (sizetype); | |
4749 | expand_omp_build_assign (&gsi, size, sz, false); | |
4750 | tree cmp = fold_build2 (GT_EXPR, boolean_type_node, | |
4751 | size, size_int (16384)); | |
4752 | expand_omp_build_assign (&gsi, controlb, cmp); | |
4753 | g = gimple_build_cond (NE_EXPR, controlb, boolean_false_node, | |
4754 | NULL_TREE, NULL_TREE); | |
4755 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
4756 | fourth_bb = split_block (third_bb, g)->dest; | |
4757 | gsi = gsi_last_nondebug_bb (fourth_bb); | |
4758 | /* FIXME: Once we have allocators, this should use allocator. */ | |
4759 | g = gimple_build_call (builtin_decl_explicit (BUILT_IN_MALLOC), 1, size); | |
4760 | gimple_call_set_lhs (g, controlp); | |
4761 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
4762 | expand_omp_scantemp_alloc (clauses, controlp, 0, alloc_align, cnt, | |
4763 | &gsi, true); | |
4764 | gsi_prev (&gsi); | |
4765 | g = gsi_stmt (gsi); | |
4766 | fifth_bb = split_block (fourth_bb, g)->dest; | |
4767 | gsi = gsi_last_nondebug_bb (fifth_bb); | |
4768 | ||
4769 | g = gimple_build_call (builtin_decl_implicit (BUILT_IN_STACK_SAVE), 0); | |
4770 | gimple_call_set_lhs (g, controlp); | |
4771 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
4772 | tree alloca_decl = builtin_decl_explicit (BUILT_IN_ALLOCA_WITH_ALIGN); | |
4773 | for (tree c = clauses; c; c = OMP_CLAUSE_CHAIN (c)) | |
4774 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE__SCANTEMP_ | |
4775 | && OMP_CLAUSE__SCANTEMP__ALLOC (c)) | |
4776 | { | |
4777 | tree tmp = create_tmp_var (sizetype); | |
4778 | tree pointee_type = TREE_TYPE (TREE_TYPE (OMP_CLAUSE_DECL (c))); | |
4779 | g = gimple_build_assign (tmp, MULT_EXPR, cnt, | |
4780 | TYPE_SIZE_UNIT (pointee_type)); | |
4781 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
4782 | g = gimple_build_call (alloca_decl, 2, tmp, | |
4783 | size_int (TYPE_ALIGN (pointee_type))); | |
4784 | gimple_call_set_lhs (g, OMP_CLAUSE_DECL (c)); | |
4785 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
4786 | } | |
4787 | ||
4788 | sixth_bb = split_block (fifth_bb, g)->dest; | |
4789 | gsi = gsi_last_nondebug_bb (sixth_bb); | |
4790 | } | |
4791 | ||
629b3d75 MJ |
4792 | t = build2 (MULT_EXPR, itype, q, threadid); |
4793 | t = build2 (PLUS_EXPR, itype, t, tt); | |
4794 | s0 = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, true, GSI_SAME_STMT); | |
4795 | ||
4796 | t = fold_build2 (PLUS_EXPR, itype, s0, q); | |
4797 | e0 = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, true, GSI_SAME_STMT); | |
4798 | ||
4799 | t = build2 (GE_EXPR, boolean_type_node, s0, e0); | |
4800 | gsi_insert_before (&gsi, gimple_build_cond_empty (t), GSI_SAME_STMT); | |
4801 | ||
4802 | /* Remove the GIMPLE_OMP_FOR statement. */ | |
4803 | gsi_remove (&gsi, true); | |
4804 | ||
4805 | /* Setup code for sequential iteration goes in SEQ_START_BB. */ | |
4806 | gsi = gsi_start_bb (seq_start_bb); | |
4807 | ||
4808 | tree startvar = fd->loop.v; | |
4809 | tree endvar = NULL_TREE; | |
4810 | ||
4811 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
4812 | { | |
4813 | tree clauses = gimple_code (inner_stmt) == GIMPLE_OMP_PARALLEL | |
4814 | ? gimple_omp_parallel_clauses (inner_stmt) | |
4815 | : gimple_omp_for_clauses (inner_stmt); | |
4816 | tree innerc = omp_find_clause (clauses, OMP_CLAUSE__LOOPTEMP_); | |
4817 | gcc_assert (innerc); | |
4818 | startvar = OMP_CLAUSE_DECL (innerc); | |
4819 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
4820 | OMP_CLAUSE__LOOPTEMP_); | |
4821 | gcc_assert (innerc); | |
4822 | endvar = OMP_CLAUSE_DECL (innerc); | |
4823 | if (fd->collapse > 1 && TREE_CODE (fd->loop.n2) != INTEGER_CST | |
4824 | && gimple_omp_for_kind (fd->for_stmt) == GF_OMP_FOR_KIND_DISTRIBUTE) | |
4825 | { | |
4826 | int i; | |
4827 | for (i = 1; i < fd->collapse; i++) | |
4828 | { | |
4829 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
4830 | OMP_CLAUSE__LOOPTEMP_); | |
4831 | gcc_assert (innerc); | |
4832 | } | |
4833 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
4834 | OMP_CLAUSE__LOOPTEMP_); | |
4835 | if (innerc) | |
4836 | { | |
4837 | /* If needed (distribute parallel for with lastprivate), | |
4838 | propagate down the total number of iterations. */ | |
4839 | tree t = fold_convert (TREE_TYPE (OMP_CLAUSE_DECL (innerc)), | |
4840 | fd->loop.n2); | |
4841 | t = force_gimple_operand_gsi (&gsi, t, false, NULL_TREE, false, | |
4842 | GSI_CONTINUE_LINKING); | |
4843 | assign_stmt = gimple_build_assign (OMP_CLAUSE_DECL (innerc), t); | |
4844 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
4845 | } | |
4846 | } | |
4847 | } | |
4848 | t = fold_convert (itype, s0); | |
4849 | t = fold_build2 (MULT_EXPR, itype, t, step); | |
4850 | if (POINTER_TYPE_P (type)) | |
bde84d51 RB |
4851 | { |
4852 | t = fold_build_pointer_plus (n1, t); | |
4853 | if (!POINTER_TYPE_P (TREE_TYPE (startvar)) | |
4854 | && TYPE_PRECISION (TREE_TYPE (startvar)) > TYPE_PRECISION (type)) | |
4855 | t = fold_convert (signed_type_for (type), t); | |
4856 | } | |
629b3d75 MJ |
4857 | else |
4858 | t = fold_build2 (PLUS_EXPR, type, t, n1); | |
4859 | t = fold_convert (TREE_TYPE (startvar), t); | |
4860 | t = force_gimple_operand_gsi (&gsi, t, | |
4861 | DECL_P (startvar) | |
4862 | && TREE_ADDRESSABLE (startvar), | |
4863 | NULL_TREE, false, GSI_CONTINUE_LINKING); | |
4864 | assign_stmt = gimple_build_assign (startvar, t); | |
4865 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
6c7ae8c5 JJ |
4866 | if (cond_var) |
4867 | { | |
4868 | tree itype = TREE_TYPE (cond_var); | |
4869 | /* For lastprivate(conditional:) itervar, we need some iteration | |
4870 | counter that starts at unsigned non-zero and increases. | |
4871 | Prefer as few IVs as possible, so if we can use startvar | |
4872 | itself, use that, or startvar + constant (those would be | |
4873 | incremented with step), and as last resort use the s0 + 1 | |
4874 | incremented by 1. */ | |
4875 | if (POINTER_TYPE_P (type) | |
4876 | || TREE_CODE (n1) != INTEGER_CST | |
4877 | || fd->loop.cond_code != LT_EXPR) | |
4878 | t = fold_build2 (PLUS_EXPR, itype, fold_convert (itype, s0), | |
4879 | build_int_cst (itype, 1)); | |
4880 | else if (tree_int_cst_sgn (n1) == 1) | |
4881 | t = fold_convert (itype, t); | |
4882 | else | |
4883 | { | |
4884 | tree c = fold_convert (itype, n1); | |
4885 | c = fold_build2 (MINUS_EXPR, itype, build_int_cst (itype, 1), c); | |
4886 | t = fold_build2 (PLUS_EXPR, itype, fold_convert (itype, t), c); | |
4887 | } | |
4888 | t = force_gimple_operand_gsi (&gsi, t, false, | |
4889 | NULL_TREE, false, GSI_CONTINUE_LINKING); | |
4890 | assign_stmt = gimple_build_assign (cond_var, t); | |
4891 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
4892 | } | |
629b3d75 MJ |
4893 | |
4894 | t = fold_convert (itype, e0); | |
4895 | t = fold_build2 (MULT_EXPR, itype, t, step); | |
4896 | if (POINTER_TYPE_P (type)) | |
bde84d51 RB |
4897 | { |
4898 | t = fold_build_pointer_plus (n1, t); | |
4899 | if (!POINTER_TYPE_P (TREE_TYPE (startvar)) | |
4900 | && TYPE_PRECISION (TREE_TYPE (startvar)) > TYPE_PRECISION (type)) | |
4901 | t = fold_convert (signed_type_for (type), t); | |
4902 | } | |
629b3d75 MJ |
4903 | else |
4904 | t = fold_build2 (PLUS_EXPR, type, t, n1); | |
4905 | t = fold_convert (TREE_TYPE (startvar), t); | |
4906 | e = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
4907 | false, GSI_CONTINUE_LINKING); | |
4908 | if (endvar) | |
4909 | { | |
4910 | assign_stmt = gimple_build_assign (endvar, e); | |
4911 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
4912 | if (useless_type_conversion_p (TREE_TYPE (fd->loop.v), TREE_TYPE (e))) | |
4913 | assign_stmt = gimple_build_assign (fd->loop.v, e); | |
4914 | else | |
4915 | assign_stmt = gimple_build_assign (fd->loop.v, NOP_EXPR, e); | |
4916 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
4917 | } | |
4918 | /* Handle linear clause adjustments. */ | |
4919 | tree itercnt = NULL_TREE; | |
aed3ab25 | 4920 | tree *nonrect_bounds = NULL; |
629b3d75 MJ |
4921 | if (gimple_omp_for_kind (fd->for_stmt) == GF_OMP_FOR_KIND_FOR) |
4922 | for (tree c = gimple_omp_for_clauses (fd->for_stmt); | |
4923 | c; c = OMP_CLAUSE_CHAIN (c)) | |
4924 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LINEAR | |
4925 | && !OMP_CLAUSE_LINEAR_NO_COPYIN (c)) | |
4926 | { | |
4927 | tree d = OMP_CLAUSE_DECL (c); | |
4928 | bool is_ref = omp_is_reference (d); | |
4929 | tree t = d, a, dest; | |
4930 | if (is_ref) | |
4931 | t = build_simple_mem_ref_loc (OMP_CLAUSE_LOCATION (c), t); | |
4932 | if (itercnt == NULL_TREE) | |
4933 | { | |
4934 | if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
4935 | { | |
4936 | itercnt = fold_build2 (MINUS_EXPR, itype, | |
4937 | fold_convert (itype, n1), | |
4938 | fold_convert (itype, fd->loop.n1)); | |
4939 | itercnt = fold_build2 (EXACT_DIV_EXPR, itype, itercnt, step); | |
4940 | itercnt = fold_build2 (PLUS_EXPR, itype, itercnt, s0); | |
4941 | itercnt = force_gimple_operand_gsi (&gsi, itercnt, true, | |
4942 | NULL_TREE, false, | |
4943 | GSI_CONTINUE_LINKING); | |
4944 | } | |
4945 | else | |
4946 | itercnt = s0; | |
4947 | } | |
4948 | tree type = TREE_TYPE (t); | |
4949 | if (POINTER_TYPE_P (type)) | |
4950 | type = sizetype; | |
4951 | a = fold_build2 (MULT_EXPR, type, | |
4952 | fold_convert (type, itercnt), | |
4953 | fold_convert (type, OMP_CLAUSE_LINEAR_STEP (c))); | |
4954 | dest = unshare_expr (t); | |
4955 | t = fold_build2 (type == TREE_TYPE (t) ? PLUS_EXPR | |
4956 | : POINTER_PLUS_EXPR, TREE_TYPE (t), t, a); | |
4957 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
4958 | false, GSI_CONTINUE_LINKING); | |
4959 | assign_stmt = gimple_build_assign (dest, t); | |
4960 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
4961 | } | |
4962 | if (fd->collapse > 1) | |
aed3ab25 JJ |
4963 | { |
4964 | if (fd->non_rect) | |
4965 | { | |
4966 | nonrect_bounds = XALLOCAVEC (tree, fd->last_nonrect + 1); | |
4967 | memset (nonrect_bounds, 0, sizeof (tree) * (fd->last_nonrect + 1)); | |
4968 | } | |
4969 | expand_omp_for_init_vars (fd, &gsi, counts, nonrect_bounds, inner_stmt, | |
4970 | startvar); | |
4971 | } | |
629b3d75 MJ |
4972 | |
4973 | if (!broken_loop) | |
4974 | { | |
4975 | /* The code controlling the sequential loop replaces the | |
4976 | GIMPLE_OMP_CONTINUE. */ | |
65f4b875 | 4977 | gsi = gsi_last_nondebug_bb (cont_bb); |
629b3d75 MJ |
4978 | gomp_continue *cont_stmt = as_a <gomp_continue *> (gsi_stmt (gsi)); |
4979 | gcc_assert (gimple_code (cont_stmt) == GIMPLE_OMP_CONTINUE); | |
4980 | vmain = gimple_omp_continue_control_use (cont_stmt); | |
4981 | vback = gimple_omp_continue_control_def (cont_stmt); | |
4982 | ||
7855700e JJ |
4983 | if (cond_var) |
4984 | { | |
4985 | tree itype = TREE_TYPE (cond_var); | |
4986 | tree t2; | |
4987 | if (POINTER_TYPE_P (type) | |
4988 | || TREE_CODE (n1) != INTEGER_CST | |
4989 | || fd->loop.cond_code != LT_EXPR) | |
4990 | t2 = build_int_cst (itype, 1); | |
4991 | else | |
4992 | t2 = fold_convert (itype, step); | |
4993 | t2 = fold_build2 (PLUS_EXPR, itype, cond_var, t2); | |
4994 | t2 = force_gimple_operand_gsi (&gsi, t2, false, | |
4995 | NULL_TREE, true, GSI_SAME_STMT); | |
4996 | assign_stmt = gimple_build_assign (cond_var, t2); | |
4997 | gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT); | |
4998 | } | |
4999 | ||
629b3d75 MJ |
5000 | if (!gimple_omp_for_combined_p (fd->for_stmt)) |
5001 | { | |
5002 | if (POINTER_TYPE_P (type)) | |
5003 | t = fold_build_pointer_plus (vmain, step); | |
5004 | else | |
5005 | t = fold_build2 (PLUS_EXPR, type, vmain, step); | |
5006 | t = force_gimple_operand_gsi (&gsi, t, | |
5007 | DECL_P (vback) | |
5008 | && TREE_ADDRESSABLE (vback), | |
5009 | NULL_TREE, true, GSI_SAME_STMT); | |
5010 | assign_stmt = gimple_build_assign (vback, t); | |
5011 | gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT); | |
5012 | ||
5013 | t = build2 (fd->loop.cond_code, boolean_type_node, | |
5014 | DECL_P (vback) && TREE_ADDRESSABLE (vback) | |
5015 | ? t : vback, e); | |
5016 | gsi_insert_before (&gsi, gimple_build_cond_empty (t), GSI_SAME_STMT); | |
5017 | } | |
5018 | ||
5019 | /* Remove the GIMPLE_OMP_CONTINUE statement. */ | |
5020 | gsi_remove (&gsi, true); | |
5021 | ||
5022 | if (fd->collapse > 1 && !gimple_omp_for_combined_p (fd->for_stmt)) | |
aed3ab25 JJ |
5023 | collapse_bb = extract_omp_for_update_vars (fd, nonrect_bounds, |
5024 | cont_bb, body_bb); | |
629b3d75 MJ |
5025 | } |
5026 | ||
5027 | /* Replace the GIMPLE_OMP_RETURN with a barrier, or nothing. */ | |
65f4b875 | 5028 | gsi = gsi_last_nondebug_bb (exit_bb); |
629b3d75 MJ |
5029 | if (!gimple_omp_return_nowait_p (gsi_stmt (gsi))) |
5030 | { | |
5031 | t = gimple_omp_return_lhs (gsi_stmt (gsi)); | |
2f6bb511 JJ |
5032 | if (fd->have_reductemp |
5033 | || ((fd->have_pointer_condtemp || fd->have_scantemp) | |
5034 | && !fd->have_nonctrl_scantemp)) | |
28567c40 JJ |
5035 | { |
5036 | tree fn; | |
5037 | if (t) | |
5038 | fn = builtin_decl_explicit (BUILT_IN_GOMP_LOOP_END_CANCEL); | |
5039 | else | |
5040 | fn = builtin_decl_explicit (BUILT_IN_GOMP_LOOP_END); | |
5041 | gcall *g = gimple_build_call (fn, 0); | |
5042 | if (t) | |
5043 | { | |
5044 | gimple_call_set_lhs (g, t); | |
6c7ae8c5 JJ |
5045 | if (fd->have_reductemp) |
5046 | gsi_insert_after (&gsi, gimple_build_assign (reductions, | |
5047 | NOP_EXPR, t), | |
5048 | GSI_SAME_STMT); | |
28567c40 JJ |
5049 | } |
5050 | gsi_insert_after (&gsi, g, GSI_SAME_STMT); | |
5051 | } | |
5052 | else | |
5053 | gsi_insert_after (&gsi, omp_build_barrier (t), GSI_SAME_STMT); | |
629b3d75 | 5054 | } |
2f03073f JJ |
5055 | else if ((fd->have_pointer_condtemp || fd->have_scantemp) |
5056 | && !fd->have_nonctrl_scantemp) | |
1a39b3d3 JJ |
5057 | { |
5058 | tree fn = builtin_decl_explicit (BUILT_IN_GOMP_LOOP_END_NOWAIT); | |
5059 | gcall *g = gimple_build_call (fn, 0); | |
5060 | gsi_insert_after (&gsi, g, GSI_SAME_STMT); | |
5061 | } | |
2f6bb511 JJ |
5062 | if (fd->have_scantemp && !fd->have_nonctrl_scantemp) |
5063 | { | |
5064 | tree clauses = gimple_omp_for_clauses (fd->for_stmt); | |
5065 | tree controlp = NULL_TREE, controlb = NULL_TREE; | |
5066 | for (tree c = clauses; c; c = OMP_CLAUSE_CHAIN (c)) | |
5067 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE__SCANTEMP_ | |
5068 | && OMP_CLAUSE__SCANTEMP__CONTROL (c)) | |
5069 | { | |
5070 | if (TREE_TYPE (OMP_CLAUSE_DECL (c)) == boolean_type_node) | |
5071 | controlb = OMP_CLAUSE_DECL (c); | |
5072 | else | |
5073 | controlp = OMP_CLAUSE_DECL (c); | |
5074 | if (controlb && controlp) | |
5075 | break; | |
5076 | } | |
5077 | gcc_assert (controlp && controlb); | |
5078 | gimple *g = gimple_build_cond (NE_EXPR, controlb, boolean_false_node, | |
5079 | NULL_TREE, NULL_TREE); | |
5080 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
5081 | exit1_bb = split_block (exit_bb, g)->dest; | |
5082 | gsi = gsi_after_labels (exit1_bb); | |
5083 | g = gimple_build_call (builtin_decl_explicit (BUILT_IN_FREE), 1, | |
5084 | controlp); | |
5085 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
5086 | exit2_bb = split_block (exit1_bb, g)->dest; | |
5087 | gsi = gsi_after_labels (exit2_bb); | |
5088 | g = gimple_build_call (builtin_decl_implicit (BUILT_IN_STACK_RESTORE), 1, | |
5089 | controlp); | |
5090 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
5091 | exit3_bb = split_block (exit2_bb, g)->dest; | |
5092 | gsi = gsi_after_labels (exit3_bb); | |
5093 | } | |
629b3d75 MJ |
5094 | gsi_remove (&gsi, true); |
5095 | ||
5096 | /* Connect all the blocks. */ | |
5097 | ep = make_edge (entry_bb, third_bb, EDGE_FALSE_VALUE); | |
357067f2 | 5098 | ep->probability = profile_probability::guessed_always ().apply_scale (3, 4); |
629b3d75 MJ |
5099 | ep = find_edge (entry_bb, second_bb); |
5100 | ep->flags = EDGE_TRUE_VALUE; | |
357067f2 | 5101 | ep->probability = profile_probability::guessed_always ().apply_scale (1, 4); |
2f6bb511 JJ |
5102 | if (fourth_bb) |
5103 | { | |
5104 | ep = make_edge (third_bb, fifth_bb, EDGE_FALSE_VALUE); | |
5105 | ep->probability | |
5106 | = profile_probability::guessed_always ().apply_scale (1, 2); | |
5107 | ep = find_edge (third_bb, fourth_bb); | |
5108 | ep->flags = EDGE_TRUE_VALUE; | |
5109 | ep->probability | |
5110 | = profile_probability::guessed_always ().apply_scale (1, 2); | |
5111 | ep = find_edge (fourth_bb, fifth_bb); | |
5112 | redirect_edge_and_branch (ep, sixth_bb); | |
5113 | } | |
5114 | else | |
5115 | sixth_bb = third_bb; | |
5116 | find_edge (sixth_bb, seq_start_bb)->flags = EDGE_FALSE_VALUE; | |
5117 | find_edge (sixth_bb, fin_bb)->flags = EDGE_TRUE_VALUE; | |
5118 | if (exit1_bb) | |
5119 | { | |
5120 | ep = make_edge (exit_bb, exit2_bb, EDGE_FALSE_VALUE); | |
5121 | ep->probability | |
5122 | = profile_probability::guessed_always ().apply_scale (1, 2); | |
5123 | ep = find_edge (exit_bb, exit1_bb); | |
5124 | ep->flags = EDGE_TRUE_VALUE; | |
5125 | ep->probability | |
5126 | = profile_probability::guessed_always ().apply_scale (1, 2); | |
5127 | ep = find_edge (exit1_bb, exit2_bb); | |
5128 | redirect_edge_and_branch (ep, exit3_bb); | |
5129 | } | |
629b3d75 MJ |
5130 | |
5131 | if (!broken_loop) | |
5132 | { | |
5133 | ep = find_edge (cont_bb, body_bb); | |
5134 | if (ep == NULL) | |
5135 | { | |
5136 | ep = BRANCH_EDGE (cont_bb); | |
5137 | gcc_assert (single_succ (ep->dest) == body_bb); | |
5138 | } | |
5139 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
5140 | { | |
5141 | remove_edge (ep); | |
5142 | ep = NULL; | |
5143 | } | |
5144 | else if (fd->collapse > 1) | |
5145 | { | |
5146 | remove_edge (ep); | |
5147 | ep = make_edge (cont_bb, collapse_bb, EDGE_TRUE_VALUE); | |
5148 | } | |
5149 | else | |
5150 | ep->flags = EDGE_TRUE_VALUE; | |
5151 | find_edge (cont_bb, fin_bb)->flags | |
5152 | = ep ? EDGE_FALSE_VALUE : EDGE_FALLTHRU; | |
5153 | } | |
5154 | ||
5155 | set_immediate_dominator (CDI_DOMINATORS, second_bb, entry_bb); | |
5156 | set_immediate_dominator (CDI_DOMINATORS, third_bb, entry_bb); | |
2f6bb511 JJ |
5157 | if (fourth_bb) |
5158 | { | |
5159 | set_immediate_dominator (CDI_DOMINATORS, fifth_bb, third_bb); | |
5160 | set_immediate_dominator (CDI_DOMINATORS, sixth_bb, third_bb); | |
5161 | } | |
5162 | set_immediate_dominator (CDI_DOMINATORS, seq_start_bb, sixth_bb); | |
629b3d75 MJ |
5163 | |
5164 | set_immediate_dominator (CDI_DOMINATORS, body_bb, | |
5165 | recompute_dominator (CDI_DOMINATORS, body_bb)); | |
5166 | set_immediate_dominator (CDI_DOMINATORS, fin_bb, | |
5167 | recompute_dominator (CDI_DOMINATORS, fin_bb)); | |
2f6bb511 JJ |
5168 | if (exit1_bb) |
5169 | { | |
5170 | set_immediate_dominator (CDI_DOMINATORS, exit2_bb, exit_bb); | |
5171 | set_immediate_dominator (CDI_DOMINATORS, exit3_bb, exit_bb); | |
5172 | } | |
629b3d75 | 5173 | |
99b1c316 | 5174 | class loop *loop = body_bb->loop_father; |
629b3d75 MJ |
5175 | if (loop != entry_bb->loop_father) |
5176 | { | |
5177 | gcc_assert (broken_loop || loop->header == body_bb); | |
5178 | gcc_assert (broken_loop | |
5179 | || loop->latch == region->cont | |
5180 | || single_pred (loop->latch) == region->cont); | |
5181 | return; | |
5182 | } | |
5183 | ||
5184 | if (!broken_loop && !gimple_omp_for_combined_p (fd->for_stmt)) | |
5185 | { | |
5186 | loop = alloc_loop (); | |
5187 | loop->header = body_bb; | |
5188 | if (collapse_bb == NULL) | |
5189 | loop->latch = cont_bb; | |
5190 | add_loop (loop, body_bb->loop_father); | |
5191 | } | |
5192 | } | |
5193 | ||
5194 | /* Return phi in E->DEST with ARG on edge E. */ | |
5195 | ||
5196 | static gphi * | |
5197 | find_phi_with_arg_on_edge (tree arg, edge e) | |
5198 | { | |
5199 | basic_block bb = e->dest; | |
5200 | ||
5201 | for (gphi_iterator gpi = gsi_start_phis (bb); | |
5202 | !gsi_end_p (gpi); | |
5203 | gsi_next (&gpi)) | |
5204 | { | |
5205 | gphi *phi = gpi.phi (); | |
5206 | if (PHI_ARG_DEF_FROM_EDGE (phi, e) == arg) | |
5207 | return phi; | |
5208 | } | |
5209 | ||
5210 | return NULL; | |
5211 | } | |
5212 | ||
5213 | /* A subroutine of expand_omp_for. Generate code for a parallel | |
5214 | loop with static schedule and a specified chunk size. Given | |
5215 | parameters: | |
5216 | ||
5217 | for (V = N1; V cond N2; V += STEP) BODY; | |
5218 | ||
5219 | where COND is "<" or ">", we generate pseudocode | |
5220 | ||
5221 | if ((__typeof (V)) -1 > 0 && N2 cond N1) goto L2; | |
5222 | if (cond is <) | |
5223 | adj = STEP - 1; | |
5224 | else | |
5225 | adj = STEP + 1; | |
5226 | if ((__typeof (V)) -1 > 0 && cond is >) | |
5227 | n = -(adj + N2 - N1) / -STEP; | |
5228 | else | |
5229 | n = (adj + N2 - N1) / STEP; | |
5230 | trip = 0; | |
5231 | V = threadid * CHUNK * STEP + N1; -- this extra definition of V is | |
5232 | here so that V is defined | |
5233 | if the loop is not entered | |
5234 | L0: | |
5235 | s0 = (trip * nthreads + threadid) * CHUNK; | |
01914336 | 5236 | e0 = min (s0 + CHUNK, n); |
629b3d75 MJ |
5237 | if (s0 < n) goto L1; else goto L4; |
5238 | L1: | |
5239 | V = s0 * STEP + N1; | |
5240 | e = e0 * STEP + N1; | |
5241 | L2: | |
5242 | BODY; | |
5243 | V += STEP; | |
5244 | if (V cond e) goto L2; else goto L3; | |
5245 | L3: | |
5246 | trip += 1; | |
5247 | goto L0; | |
5248 | L4: | |
5249 | */ | |
5250 | ||
5251 | static void | |
5252 | expand_omp_for_static_chunk (struct omp_region *region, | |
5253 | struct omp_for_data *fd, gimple *inner_stmt) | |
5254 | { | |
5255 | tree n, s0, e0, e, t; | |
5256 | tree trip_var, trip_init, trip_main, trip_back, nthreads, threadid; | |
5257 | tree type, itype, vmain, vback, vextra; | |
5258 | basic_block entry_bb, exit_bb, body_bb, seq_start_bb, iter_part_bb; | |
5259 | basic_block trip_update_bb = NULL, cont_bb, collapse_bb = NULL, fin_bb; | |
6c7ae8c5 | 5260 | gimple_stmt_iterator gsi, gsip; |
629b3d75 MJ |
5261 | edge se; |
5262 | bool broken_loop = region->cont == NULL; | |
5263 | tree *counts = NULL; | |
5264 | tree n1, n2, step; | |
28567c40 | 5265 | tree reductions = NULL_TREE; |
8221c30b | 5266 | tree cond_var = NULL_TREE, condtemp = NULL_TREE; |
629b3d75 MJ |
5267 | |
5268 | itype = type = TREE_TYPE (fd->loop.v); | |
5269 | if (POINTER_TYPE_P (type)) | |
5270 | itype = signed_type_for (type); | |
5271 | ||
5272 | entry_bb = region->entry; | |
5273 | se = split_block (entry_bb, last_stmt (entry_bb)); | |
5274 | entry_bb = se->src; | |
5275 | iter_part_bb = se->dest; | |
5276 | cont_bb = region->cont; | |
5277 | gcc_assert (EDGE_COUNT (iter_part_bb->succs) == 2); | |
5278 | fin_bb = BRANCH_EDGE (iter_part_bb)->dest; | |
5279 | gcc_assert (broken_loop | |
5280 | || fin_bb == FALLTHRU_EDGE (cont_bb)->dest); | |
5281 | seq_start_bb = split_edge (FALLTHRU_EDGE (iter_part_bb)); | |
5282 | body_bb = single_succ (seq_start_bb); | |
5283 | if (!broken_loop) | |
5284 | { | |
5285 | gcc_assert (BRANCH_EDGE (cont_bb)->dest == body_bb | |
5286 | || single_succ (BRANCH_EDGE (cont_bb)->dest) == body_bb); | |
5287 | gcc_assert (EDGE_COUNT (cont_bb->succs) == 2); | |
5288 | trip_update_bb = split_edge (FALLTHRU_EDGE (cont_bb)); | |
5289 | } | |
5290 | exit_bb = region->exit; | |
5291 | ||
5292 | /* Trip and adjustment setup goes in ENTRY_BB. */ | |
65f4b875 | 5293 | gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 | 5294 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); |
6c7ae8c5 JJ |
5295 | gsip = gsi; |
5296 | gsi_prev (&gsip); | |
629b3d75 MJ |
5297 | |
5298 | if (fd->collapse > 1) | |
5299 | { | |
5300 | int first_zero_iter = -1, dummy = -1; | |
5301 | basic_block l2_dom_bb = NULL, dummy_bb = NULL; | |
5302 | ||
5303 | counts = XALLOCAVEC (tree, fd->collapse); | |
5304 | expand_omp_for_init_counts (fd, &gsi, entry_bb, counts, | |
5305 | fin_bb, first_zero_iter, | |
5306 | dummy_bb, dummy, l2_dom_bb); | |
5307 | t = NULL_TREE; | |
5308 | } | |
5309 | else if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
5310 | t = integer_one_node; | |
5311 | else | |
5312 | t = fold_binary (fd->loop.cond_code, boolean_type_node, | |
5313 | fold_convert (type, fd->loop.n1), | |
5314 | fold_convert (type, fd->loop.n2)); | |
5315 | if (fd->collapse == 1 | |
5316 | && TYPE_UNSIGNED (type) | |
5317 | && (t == NULL_TREE || !integer_onep (t))) | |
5318 | { | |
5319 | n1 = fold_convert (type, unshare_expr (fd->loop.n1)); | |
5320 | n1 = force_gimple_operand_gsi (&gsi, n1, true, NULL_TREE, | |
5321 | true, GSI_SAME_STMT); | |
5322 | n2 = fold_convert (type, unshare_expr (fd->loop.n2)); | |
5323 | n2 = force_gimple_operand_gsi (&gsi, n2, true, NULL_TREE, | |
5324 | true, GSI_SAME_STMT); | |
5325 | gcond *cond_stmt = gimple_build_cond (fd->loop.cond_code, n1, n2, | |
5326 | NULL_TREE, NULL_TREE); | |
5327 | gsi_insert_before (&gsi, cond_stmt, GSI_SAME_STMT); | |
5328 | if (walk_tree (gimple_cond_lhs_ptr (cond_stmt), | |
5329 | expand_omp_regimplify_p, NULL, NULL) | |
5330 | || walk_tree (gimple_cond_rhs_ptr (cond_stmt), | |
5331 | expand_omp_regimplify_p, NULL, NULL)) | |
5332 | { | |
5333 | gsi = gsi_for_stmt (cond_stmt); | |
5334 | gimple_regimplify_operands (cond_stmt, &gsi); | |
5335 | } | |
5336 | se = split_block (entry_bb, cond_stmt); | |
5337 | se->flags = EDGE_TRUE_VALUE; | |
5338 | entry_bb = se->dest; | |
357067f2 | 5339 | se->probability = profile_probability::very_likely (); |
629b3d75 | 5340 | se = make_edge (se->src, fin_bb, EDGE_FALSE_VALUE); |
357067f2 | 5341 | se->probability = profile_probability::very_unlikely (); |
629b3d75 MJ |
5342 | if (gimple_in_ssa_p (cfun)) |
5343 | { | |
5344 | int dest_idx = find_edge (iter_part_bb, fin_bb)->dest_idx; | |
5345 | for (gphi_iterator gpi = gsi_start_phis (fin_bb); | |
5346 | !gsi_end_p (gpi); gsi_next (&gpi)) | |
5347 | { | |
5348 | gphi *phi = gpi.phi (); | |
5349 | add_phi_arg (phi, gimple_phi_arg_def (phi, dest_idx), | |
5350 | se, UNKNOWN_LOCATION); | |
5351 | } | |
5352 | } | |
5353 | gsi = gsi_last_bb (entry_bb); | |
5354 | } | |
5355 | ||
8221c30b JJ |
5356 | if (fd->lastprivate_conditional) |
5357 | { | |
5358 | tree clauses = gimple_omp_for_clauses (fd->for_stmt); | |
5359 | tree c = omp_find_clause (clauses, OMP_CLAUSE__CONDTEMP_); | |
5360 | if (fd->have_pointer_condtemp) | |
5361 | condtemp = OMP_CLAUSE_DECL (c); | |
5362 | c = omp_find_clause (OMP_CLAUSE_CHAIN (c), OMP_CLAUSE__CONDTEMP_); | |
5363 | cond_var = OMP_CLAUSE_DECL (c); | |
5364 | } | |
5365 | if (fd->have_reductemp || fd->have_pointer_condtemp) | |
28567c40 JJ |
5366 | { |
5367 | tree t1 = build_int_cst (long_integer_type_node, 0); | |
5368 | tree t2 = build_int_cst (long_integer_type_node, 1); | |
5369 | tree t3 = build_int_cstu (long_integer_type_node, | |
5370 | (HOST_WIDE_INT_1U << 31) + 1); | |
5371 | tree clauses = gimple_omp_for_clauses (fd->for_stmt); | |
6c7ae8c5 JJ |
5372 | gimple_stmt_iterator gsi2 = gsi_none (); |
5373 | gimple *g = NULL; | |
5374 | tree mem = null_pointer_node, memv = NULL_TREE; | |
6c7ae8c5 JJ |
5375 | if (fd->have_reductemp) |
5376 | { | |
5377 | tree c = omp_find_clause (clauses, OMP_CLAUSE__REDUCTEMP_); | |
5378 | reductions = OMP_CLAUSE_DECL (c); | |
5379 | gcc_assert (TREE_CODE (reductions) == SSA_NAME); | |
5380 | g = SSA_NAME_DEF_STMT (reductions); | |
5381 | reductions = gimple_assign_rhs1 (g); | |
5382 | OMP_CLAUSE_DECL (c) = reductions; | |
5383 | gsi2 = gsi_for_stmt (g); | |
5384 | } | |
5385 | else | |
5386 | { | |
5387 | if (gsi_end_p (gsip)) | |
5388 | gsi2 = gsi_after_labels (region->entry); | |
5389 | else | |
5390 | gsi2 = gsip; | |
5391 | reductions = null_pointer_node; | |
5392 | } | |
8221c30b | 5393 | if (fd->have_pointer_condtemp) |
6c7ae8c5 | 5394 | { |
6c7ae8c5 JJ |
5395 | tree type = TREE_TYPE (condtemp); |
5396 | memv = create_tmp_var (type); | |
5397 | TREE_ADDRESSABLE (memv) = 1; | |
5398 | unsigned HOST_WIDE_INT sz | |
5399 | = tree_to_uhwi (TYPE_SIZE_UNIT (TREE_TYPE (type))); | |
5400 | sz *= fd->lastprivate_conditional; | |
5401 | expand_omp_build_assign (&gsi2, memv, build_int_cst (type, sz), | |
5402 | false); | |
5403 | mem = build_fold_addr_expr (memv); | |
5404 | } | |
28567c40 JJ |
5405 | tree t |
5406 | = build_call_expr (builtin_decl_explicit (BUILT_IN_GOMP_LOOP_START), | |
5407 | 9, t1, t2, t2, t3, t1, null_pointer_node, | |
6c7ae8c5 | 5408 | null_pointer_node, reductions, mem); |
28567c40 JJ |
5409 | force_gimple_operand_gsi (&gsi2, t, true, NULL_TREE, |
5410 | true, GSI_SAME_STMT); | |
8221c30b | 5411 | if (fd->have_pointer_condtemp) |
6c7ae8c5 JJ |
5412 | expand_omp_build_assign (&gsi2, condtemp, memv, false); |
5413 | if (fd->have_reductemp) | |
5414 | { | |
5415 | gsi_remove (&gsi2, true); | |
5416 | release_ssa_name (gimple_assign_lhs (g)); | |
5417 | } | |
28567c40 | 5418 | } |
629b3d75 MJ |
5419 | switch (gimple_omp_for_kind (fd->for_stmt)) |
5420 | { | |
5421 | case GF_OMP_FOR_KIND_FOR: | |
5422 | nthreads = builtin_decl_explicit (BUILT_IN_OMP_GET_NUM_THREADS); | |
5423 | threadid = builtin_decl_explicit (BUILT_IN_OMP_GET_THREAD_NUM); | |
5424 | break; | |
5425 | case GF_OMP_FOR_KIND_DISTRIBUTE: | |
5426 | nthreads = builtin_decl_explicit (BUILT_IN_OMP_GET_NUM_TEAMS); | |
5427 | threadid = builtin_decl_explicit (BUILT_IN_OMP_GET_TEAM_NUM); | |
5428 | break; | |
5429 | default: | |
5430 | gcc_unreachable (); | |
5431 | } | |
5432 | nthreads = build_call_expr (nthreads, 0); | |
5433 | nthreads = fold_convert (itype, nthreads); | |
5434 | nthreads = force_gimple_operand_gsi (&gsi, nthreads, true, NULL_TREE, | |
5435 | true, GSI_SAME_STMT); | |
5436 | threadid = build_call_expr (threadid, 0); | |
5437 | threadid = fold_convert (itype, threadid); | |
5438 | threadid = force_gimple_operand_gsi (&gsi, threadid, true, NULL_TREE, | |
5439 | true, GSI_SAME_STMT); | |
5440 | ||
5441 | n1 = fd->loop.n1; | |
5442 | n2 = fd->loop.n2; | |
5443 | step = fd->loop.step; | |
5444 | if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
5445 | { | |
5446 | tree innerc = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), | |
5447 | OMP_CLAUSE__LOOPTEMP_); | |
5448 | gcc_assert (innerc); | |
5449 | n1 = OMP_CLAUSE_DECL (innerc); | |
5450 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
5451 | OMP_CLAUSE__LOOPTEMP_); | |
5452 | gcc_assert (innerc); | |
5453 | n2 = OMP_CLAUSE_DECL (innerc); | |
5454 | } | |
5455 | n1 = force_gimple_operand_gsi (&gsi, fold_convert (type, n1), | |
5456 | true, NULL_TREE, true, GSI_SAME_STMT); | |
5457 | n2 = force_gimple_operand_gsi (&gsi, fold_convert (itype, n2), | |
5458 | true, NULL_TREE, true, GSI_SAME_STMT); | |
5459 | step = force_gimple_operand_gsi (&gsi, fold_convert (itype, step), | |
5460 | true, NULL_TREE, true, GSI_SAME_STMT); | |
5461 | tree chunk_size = fold_convert (itype, fd->chunk_size); | |
5462 | chunk_size = omp_adjust_chunk_size (chunk_size, fd->simd_schedule); | |
5463 | chunk_size | |
5464 | = force_gimple_operand_gsi (&gsi, chunk_size, true, NULL_TREE, true, | |
5465 | GSI_SAME_STMT); | |
5466 | ||
5467 | t = build_int_cst (itype, (fd->loop.cond_code == LT_EXPR ? -1 : 1)); | |
5468 | t = fold_build2 (PLUS_EXPR, itype, step, t); | |
5469 | t = fold_build2 (PLUS_EXPR, itype, t, n2); | |
5470 | t = fold_build2 (MINUS_EXPR, itype, t, fold_convert (itype, n1)); | |
5471 | if (TYPE_UNSIGNED (itype) && fd->loop.cond_code == GT_EXPR) | |
5472 | t = fold_build2 (TRUNC_DIV_EXPR, itype, | |
5473 | fold_build1 (NEGATE_EXPR, itype, t), | |
5474 | fold_build1 (NEGATE_EXPR, itype, step)); | |
5475 | else | |
5476 | t = fold_build2 (TRUNC_DIV_EXPR, itype, t, step); | |
5477 | t = fold_convert (itype, t); | |
5478 | n = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
5479 | true, GSI_SAME_STMT); | |
5480 | ||
5481 | trip_var = create_tmp_reg (itype, ".trip"); | |
5482 | if (gimple_in_ssa_p (cfun)) | |
5483 | { | |
5484 | trip_init = make_ssa_name (trip_var); | |
5485 | trip_main = make_ssa_name (trip_var); | |
5486 | trip_back = make_ssa_name (trip_var); | |
5487 | } | |
5488 | else | |
5489 | { | |
5490 | trip_init = trip_var; | |
5491 | trip_main = trip_var; | |
5492 | trip_back = trip_var; | |
5493 | } | |
5494 | ||
5495 | gassign *assign_stmt | |
5496 | = gimple_build_assign (trip_init, build_int_cst (itype, 0)); | |
5497 | gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT); | |
5498 | ||
5499 | t = fold_build2 (MULT_EXPR, itype, threadid, chunk_size); | |
5500 | t = fold_build2 (MULT_EXPR, itype, t, step); | |
5501 | if (POINTER_TYPE_P (type)) | |
5502 | t = fold_build_pointer_plus (n1, t); | |
5503 | else | |
5504 | t = fold_build2 (PLUS_EXPR, type, t, n1); | |
5505 | vextra = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
5506 | true, GSI_SAME_STMT); | |
5507 | ||
5508 | /* Remove the GIMPLE_OMP_FOR. */ | |
5509 | gsi_remove (&gsi, true); | |
5510 | ||
5511 | gimple_stmt_iterator gsif = gsi; | |
5512 | ||
5513 | /* Iteration space partitioning goes in ITER_PART_BB. */ | |
5514 | gsi = gsi_last_bb (iter_part_bb); | |
5515 | ||
5516 | t = fold_build2 (MULT_EXPR, itype, trip_main, nthreads); | |
5517 | t = fold_build2 (PLUS_EXPR, itype, t, threadid); | |
5518 | t = fold_build2 (MULT_EXPR, itype, t, chunk_size); | |
5519 | s0 = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
5520 | false, GSI_CONTINUE_LINKING); | |
5521 | ||
5522 | t = fold_build2 (PLUS_EXPR, itype, s0, chunk_size); | |
5523 | t = fold_build2 (MIN_EXPR, itype, t, n); | |
5524 | e0 = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
5525 | false, GSI_CONTINUE_LINKING); | |
5526 | ||
5527 | t = build2 (LT_EXPR, boolean_type_node, s0, n); | |
5528 | gsi_insert_after (&gsi, gimple_build_cond_empty (t), GSI_CONTINUE_LINKING); | |
5529 | ||
5530 | /* Setup code for sequential iteration goes in SEQ_START_BB. */ | |
5531 | gsi = gsi_start_bb (seq_start_bb); | |
5532 | ||
5533 | tree startvar = fd->loop.v; | |
5534 | tree endvar = NULL_TREE; | |
5535 | ||
5536 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
5537 | { | |
5538 | tree clauses = gimple_code (inner_stmt) == GIMPLE_OMP_PARALLEL | |
5539 | ? gimple_omp_parallel_clauses (inner_stmt) | |
5540 | : gimple_omp_for_clauses (inner_stmt); | |
5541 | tree innerc = omp_find_clause (clauses, OMP_CLAUSE__LOOPTEMP_); | |
5542 | gcc_assert (innerc); | |
5543 | startvar = OMP_CLAUSE_DECL (innerc); | |
5544 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
5545 | OMP_CLAUSE__LOOPTEMP_); | |
5546 | gcc_assert (innerc); | |
5547 | endvar = OMP_CLAUSE_DECL (innerc); | |
5548 | if (fd->collapse > 1 && TREE_CODE (fd->loop.n2) != INTEGER_CST | |
5549 | && gimple_omp_for_kind (fd->for_stmt) == GF_OMP_FOR_KIND_DISTRIBUTE) | |
5550 | { | |
5551 | int i; | |
5552 | for (i = 1; i < fd->collapse; i++) | |
5553 | { | |
5554 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
5555 | OMP_CLAUSE__LOOPTEMP_); | |
5556 | gcc_assert (innerc); | |
5557 | } | |
5558 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
5559 | OMP_CLAUSE__LOOPTEMP_); | |
5560 | if (innerc) | |
5561 | { | |
5562 | /* If needed (distribute parallel for with lastprivate), | |
5563 | propagate down the total number of iterations. */ | |
5564 | tree t = fold_convert (TREE_TYPE (OMP_CLAUSE_DECL (innerc)), | |
5565 | fd->loop.n2); | |
5566 | t = force_gimple_operand_gsi (&gsi, t, false, NULL_TREE, false, | |
5567 | GSI_CONTINUE_LINKING); | |
5568 | assign_stmt = gimple_build_assign (OMP_CLAUSE_DECL (innerc), t); | |
5569 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
5570 | } | |
5571 | } | |
5572 | } | |
5573 | ||
5574 | t = fold_convert (itype, s0); | |
5575 | t = fold_build2 (MULT_EXPR, itype, t, step); | |
5576 | if (POINTER_TYPE_P (type)) | |
bde84d51 RB |
5577 | { |
5578 | t = fold_build_pointer_plus (n1, t); | |
5579 | if (!POINTER_TYPE_P (TREE_TYPE (startvar)) | |
5580 | && TYPE_PRECISION (TREE_TYPE (startvar)) > TYPE_PRECISION (type)) | |
5581 | t = fold_convert (signed_type_for (type), t); | |
5582 | } | |
629b3d75 MJ |
5583 | else |
5584 | t = fold_build2 (PLUS_EXPR, type, t, n1); | |
5585 | t = fold_convert (TREE_TYPE (startvar), t); | |
5586 | t = force_gimple_operand_gsi (&gsi, t, | |
5587 | DECL_P (startvar) | |
5588 | && TREE_ADDRESSABLE (startvar), | |
5589 | NULL_TREE, false, GSI_CONTINUE_LINKING); | |
5590 | assign_stmt = gimple_build_assign (startvar, t); | |
5591 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
6c7ae8c5 JJ |
5592 | if (cond_var) |
5593 | { | |
5594 | tree itype = TREE_TYPE (cond_var); | |
5595 | /* For lastprivate(conditional:) itervar, we need some iteration | |
5596 | counter that starts at unsigned non-zero and increases. | |
5597 | Prefer as few IVs as possible, so if we can use startvar | |
5598 | itself, use that, or startvar + constant (those would be | |
5599 | incremented with step), and as last resort use the s0 + 1 | |
5600 | incremented by 1. */ | |
5601 | if (POINTER_TYPE_P (type) | |
5602 | || TREE_CODE (n1) != INTEGER_CST | |
5603 | || fd->loop.cond_code != LT_EXPR) | |
5604 | t = fold_build2 (PLUS_EXPR, itype, fold_convert (itype, s0), | |
5605 | build_int_cst (itype, 1)); | |
5606 | else if (tree_int_cst_sgn (n1) == 1) | |
5607 | t = fold_convert (itype, t); | |
5608 | else | |
5609 | { | |
5610 | tree c = fold_convert (itype, n1); | |
5611 | c = fold_build2 (MINUS_EXPR, itype, build_int_cst (itype, 1), c); | |
5612 | t = fold_build2 (PLUS_EXPR, itype, fold_convert (itype, t), c); | |
5613 | } | |
5614 | t = force_gimple_operand_gsi (&gsi, t, false, | |
5615 | NULL_TREE, false, GSI_CONTINUE_LINKING); | |
5616 | assign_stmt = gimple_build_assign (cond_var, t); | |
5617 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
5618 | } | |
629b3d75 MJ |
5619 | |
5620 | t = fold_convert (itype, e0); | |
5621 | t = fold_build2 (MULT_EXPR, itype, t, step); | |
5622 | if (POINTER_TYPE_P (type)) | |
bde84d51 RB |
5623 | { |
5624 | t = fold_build_pointer_plus (n1, t); | |
5625 | if (!POINTER_TYPE_P (TREE_TYPE (startvar)) | |
5626 | && TYPE_PRECISION (TREE_TYPE (startvar)) > TYPE_PRECISION (type)) | |
5627 | t = fold_convert (signed_type_for (type), t); | |
5628 | } | |
629b3d75 MJ |
5629 | else |
5630 | t = fold_build2 (PLUS_EXPR, type, t, n1); | |
5631 | t = fold_convert (TREE_TYPE (startvar), t); | |
5632 | e = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
5633 | false, GSI_CONTINUE_LINKING); | |
5634 | if (endvar) | |
5635 | { | |
5636 | assign_stmt = gimple_build_assign (endvar, e); | |
5637 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
5638 | if (useless_type_conversion_p (TREE_TYPE (fd->loop.v), TREE_TYPE (e))) | |
5639 | assign_stmt = gimple_build_assign (fd->loop.v, e); | |
5640 | else | |
5641 | assign_stmt = gimple_build_assign (fd->loop.v, NOP_EXPR, e); | |
5642 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
5643 | } | |
5644 | /* Handle linear clause adjustments. */ | |
5645 | tree itercnt = NULL_TREE, itercntbias = NULL_TREE; | |
5646 | if (gimple_omp_for_kind (fd->for_stmt) == GF_OMP_FOR_KIND_FOR) | |
5647 | for (tree c = gimple_omp_for_clauses (fd->for_stmt); | |
5648 | c; c = OMP_CLAUSE_CHAIN (c)) | |
5649 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LINEAR | |
5650 | && !OMP_CLAUSE_LINEAR_NO_COPYIN (c)) | |
5651 | { | |
5652 | tree d = OMP_CLAUSE_DECL (c); | |
5653 | bool is_ref = omp_is_reference (d); | |
5654 | tree t = d, a, dest; | |
5655 | if (is_ref) | |
5656 | t = build_simple_mem_ref_loc (OMP_CLAUSE_LOCATION (c), t); | |
5657 | tree type = TREE_TYPE (t); | |
5658 | if (POINTER_TYPE_P (type)) | |
5659 | type = sizetype; | |
5660 | dest = unshare_expr (t); | |
5661 | tree v = create_tmp_var (TREE_TYPE (t), NULL); | |
5662 | expand_omp_build_assign (&gsif, v, t); | |
5663 | if (itercnt == NULL_TREE) | |
5664 | { | |
5665 | if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
5666 | { | |
5667 | itercntbias | |
5668 | = fold_build2 (MINUS_EXPR, itype, fold_convert (itype, n1), | |
5669 | fold_convert (itype, fd->loop.n1)); | |
5670 | itercntbias = fold_build2 (EXACT_DIV_EXPR, itype, | |
5671 | itercntbias, step); | |
5672 | itercntbias | |
5673 | = force_gimple_operand_gsi (&gsif, itercntbias, true, | |
5674 | NULL_TREE, true, | |
5675 | GSI_SAME_STMT); | |
5676 | itercnt = fold_build2 (PLUS_EXPR, itype, itercntbias, s0); | |
5677 | itercnt = force_gimple_operand_gsi (&gsi, itercnt, true, | |
5678 | NULL_TREE, false, | |
5679 | GSI_CONTINUE_LINKING); | |
5680 | } | |
5681 | else | |
5682 | itercnt = s0; | |
5683 | } | |
5684 | a = fold_build2 (MULT_EXPR, type, | |
5685 | fold_convert (type, itercnt), | |
5686 | fold_convert (type, OMP_CLAUSE_LINEAR_STEP (c))); | |
5687 | t = fold_build2 (type == TREE_TYPE (t) ? PLUS_EXPR | |
5688 | : POINTER_PLUS_EXPR, TREE_TYPE (t), v, a); | |
5689 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
5690 | false, GSI_CONTINUE_LINKING); | |
5691 | assign_stmt = gimple_build_assign (dest, t); | |
5692 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
5693 | } | |
5694 | if (fd->collapse > 1) | |
aed3ab25 | 5695 | expand_omp_for_init_vars (fd, &gsi, counts, NULL, inner_stmt, startvar); |
629b3d75 MJ |
5696 | |
5697 | if (!broken_loop) | |
5698 | { | |
5699 | /* The code controlling the sequential loop goes in CONT_BB, | |
5700 | replacing the GIMPLE_OMP_CONTINUE. */ | |
65f4b875 | 5701 | gsi = gsi_last_nondebug_bb (cont_bb); |
629b3d75 MJ |
5702 | gomp_continue *cont_stmt = as_a <gomp_continue *> (gsi_stmt (gsi)); |
5703 | vmain = gimple_omp_continue_control_use (cont_stmt); | |
5704 | vback = gimple_omp_continue_control_def (cont_stmt); | |
5705 | ||
7855700e JJ |
5706 | if (cond_var) |
5707 | { | |
5708 | tree itype = TREE_TYPE (cond_var); | |
5709 | tree t2; | |
5710 | if (POINTER_TYPE_P (type) | |
5711 | || TREE_CODE (n1) != INTEGER_CST | |
5712 | || fd->loop.cond_code != LT_EXPR) | |
5713 | t2 = build_int_cst (itype, 1); | |
5714 | else | |
5715 | t2 = fold_convert (itype, step); | |
5716 | t2 = fold_build2 (PLUS_EXPR, itype, cond_var, t2); | |
5717 | t2 = force_gimple_operand_gsi (&gsi, t2, false, | |
5718 | NULL_TREE, true, GSI_SAME_STMT); | |
5719 | assign_stmt = gimple_build_assign (cond_var, t2); | |
5720 | gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT); | |
5721 | } | |
5722 | ||
629b3d75 MJ |
5723 | if (!gimple_omp_for_combined_p (fd->for_stmt)) |
5724 | { | |
5725 | if (POINTER_TYPE_P (type)) | |
5726 | t = fold_build_pointer_plus (vmain, step); | |
5727 | else | |
5728 | t = fold_build2 (PLUS_EXPR, type, vmain, step); | |
5729 | if (DECL_P (vback) && TREE_ADDRESSABLE (vback)) | |
5730 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
5731 | true, GSI_SAME_STMT); | |
5732 | assign_stmt = gimple_build_assign (vback, t); | |
5733 | gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT); | |
5734 | ||
5735 | if (tree_int_cst_equal (fd->chunk_size, integer_one_node)) | |
5736 | t = build2 (EQ_EXPR, boolean_type_node, | |
5737 | build_int_cst (itype, 0), | |
5738 | build_int_cst (itype, 1)); | |
5739 | else | |
5740 | t = build2 (fd->loop.cond_code, boolean_type_node, | |
5741 | DECL_P (vback) && TREE_ADDRESSABLE (vback) | |
5742 | ? t : vback, e); | |
5743 | gsi_insert_before (&gsi, gimple_build_cond_empty (t), GSI_SAME_STMT); | |
5744 | } | |
5745 | ||
5746 | /* Remove GIMPLE_OMP_CONTINUE. */ | |
5747 | gsi_remove (&gsi, true); | |
5748 | ||
5749 | if (fd->collapse > 1 && !gimple_omp_for_combined_p (fd->for_stmt)) | |
aed3ab25 | 5750 | collapse_bb = extract_omp_for_update_vars (fd, NULL, cont_bb, body_bb); |
629b3d75 MJ |
5751 | |
5752 | /* Trip update code goes into TRIP_UPDATE_BB. */ | |
5753 | gsi = gsi_start_bb (trip_update_bb); | |
5754 | ||
5755 | t = build_int_cst (itype, 1); | |
5756 | t = build2 (PLUS_EXPR, itype, trip_main, t); | |
5757 | assign_stmt = gimple_build_assign (trip_back, t); | |
5758 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
5759 | } | |
5760 | ||
5761 | /* Replace the GIMPLE_OMP_RETURN with a barrier, or nothing. */ | |
65f4b875 | 5762 | gsi = gsi_last_nondebug_bb (exit_bb); |
629b3d75 MJ |
5763 | if (!gimple_omp_return_nowait_p (gsi_stmt (gsi))) |
5764 | { | |
5765 | t = gimple_omp_return_lhs (gsi_stmt (gsi)); | |
8221c30b | 5766 | if (fd->have_reductemp || fd->have_pointer_condtemp) |
28567c40 JJ |
5767 | { |
5768 | tree fn; | |
5769 | if (t) | |
5770 | fn = builtin_decl_explicit (BUILT_IN_GOMP_LOOP_END_CANCEL); | |
5771 | else | |
5772 | fn = builtin_decl_explicit (BUILT_IN_GOMP_LOOP_END); | |
5773 | gcall *g = gimple_build_call (fn, 0); | |
5774 | if (t) | |
5775 | { | |
5776 | gimple_call_set_lhs (g, t); | |
6c7ae8c5 JJ |
5777 | if (fd->have_reductemp) |
5778 | gsi_insert_after (&gsi, gimple_build_assign (reductions, | |
5779 | NOP_EXPR, t), | |
5780 | GSI_SAME_STMT); | |
28567c40 JJ |
5781 | } |
5782 | gsi_insert_after (&gsi, g, GSI_SAME_STMT); | |
5783 | } | |
5784 | else | |
5785 | gsi_insert_after (&gsi, omp_build_barrier (t), GSI_SAME_STMT); | |
629b3d75 | 5786 | } |
1a39b3d3 JJ |
5787 | else if (fd->have_pointer_condtemp) |
5788 | { | |
5789 | tree fn = builtin_decl_explicit (BUILT_IN_GOMP_LOOP_END_NOWAIT); | |
5790 | gcall *g = gimple_build_call (fn, 0); | |
5791 | gsi_insert_after (&gsi, g, GSI_SAME_STMT); | |
5792 | } | |
629b3d75 MJ |
5793 | gsi_remove (&gsi, true); |
5794 | ||
5795 | /* Connect the new blocks. */ | |
5796 | find_edge (iter_part_bb, seq_start_bb)->flags = EDGE_TRUE_VALUE; | |
5797 | find_edge (iter_part_bb, fin_bb)->flags = EDGE_FALSE_VALUE; | |
5798 | ||
5799 | if (!broken_loop) | |
5800 | { | |
5801 | se = find_edge (cont_bb, body_bb); | |
5802 | if (se == NULL) | |
5803 | { | |
5804 | se = BRANCH_EDGE (cont_bb); | |
5805 | gcc_assert (single_succ (se->dest) == body_bb); | |
5806 | } | |
5807 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
5808 | { | |
5809 | remove_edge (se); | |
5810 | se = NULL; | |
5811 | } | |
5812 | else if (fd->collapse > 1) | |
5813 | { | |
5814 | remove_edge (se); | |
5815 | se = make_edge (cont_bb, collapse_bb, EDGE_TRUE_VALUE); | |
5816 | } | |
5817 | else | |
5818 | se->flags = EDGE_TRUE_VALUE; | |
5819 | find_edge (cont_bb, trip_update_bb)->flags | |
5820 | = se ? EDGE_FALSE_VALUE : EDGE_FALLTHRU; | |
5821 | ||
01914336 MJ |
5822 | redirect_edge_and_branch (single_succ_edge (trip_update_bb), |
5823 | iter_part_bb); | |
629b3d75 MJ |
5824 | } |
5825 | ||
5826 | if (gimple_in_ssa_p (cfun)) | |
5827 | { | |
5828 | gphi_iterator psi; | |
5829 | gphi *phi; | |
5830 | edge re, ene; | |
5831 | edge_var_map *vm; | |
5832 | size_t i; | |
5833 | ||
5834 | gcc_assert (fd->collapse == 1 && !broken_loop); | |
5835 | ||
5836 | /* When we redirect the edge from trip_update_bb to iter_part_bb, we | |
5837 | remove arguments of the phi nodes in fin_bb. We need to create | |
5838 | appropriate phi nodes in iter_part_bb instead. */ | |
5839 | se = find_edge (iter_part_bb, fin_bb); | |
5840 | re = single_succ_edge (trip_update_bb); | |
5841 | vec<edge_var_map> *head = redirect_edge_var_map_vector (re); | |
5842 | ene = single_succ_edge (entry_bb); | |
5843 | ||
5844 | psi = gsi_start_phis (fin_bb); | |
5845 | for (i = 0; !gsi_end_p (psi) && head->iterate (i, &vm); | |
5846 | gsi_next (&psi), ++i) | |
5847 | { | |
5848 | gphi *nphi; | |
620e594b | 5849 | location_t locus; |
629b3d75 MJ |
5850 | |
5851 | phi = psi.phi (); | |
d83cc5cc TV |
5852 | if (operand_equal_p (gimple_phi_arg_def (phi, 0), |
5853 | redirect_edge_var_map_def (vm), 0)) | |
5854 | continue; | |
5855 | ||
629b3d75 MJ |
5856 | t = gimple_phi_result (phi); |
5857 | gcc_assert (t == redirect_edge_var_map_result (vm)); | |
5858 | ||
5859 | if (!single_pred_p (fin_bb)) | |
5860 | t = copy_ssa_name (t, phi); | |
5861 | ||
5862 | nphi = create_phi_node (t, iter_part_bb); | |
5863 | ||
5864 | t = PHI_ARG_DEF_FROM_EDGE (phi, se); | |
5865 | locus = gimple_phi_arg_location_from_edge (phi, se); | |
5866 | ||
5867 | /* A special case -- fd->loop.v is not yet computed in | |
5868 | iter_part_bb, we need to use vextra instead. */ | |
5869 | if (t == fd->loop.v) | |
5870 | t = vextra; | |
5871 | add_phi_arg (nphi, t, ene, locus); | |
5872 | locus = redirect_edge_var_map_location (vm); | |
5873 | tree back_arg = redirect_edge_var_map_def (vm); | |
5874 | add_phi_arg (nphi, back_arg, re, locus); | |
5875 | edge ce = find_edge (cont_bb, body_bb); | |
5876 | if (ce == NULL) | |
5877 | { | |
5878 | ce = BRANCH_EDGE (cont_bb); | |
5879 | gcc_assert (single_succ (ce->dest) == body_bb); | |
5880 | ce = single_succ_edge (ce->dest); | |
5881 | } | |
5882 | gphi *inner_loop_phi = find_phi_with_arg_on_edge (back_arg, ce); | |
5883 | gcc_assert (inner_loop_phi != NULL); | |
5884 | add_phi_arg (inner_loop_phi, gimple_phi_result (nphi), | |
5885 | find_edge (seq_start_bb, body_bb), locus); | |
5886 | ||
5887 | if (!single_pred_p (fin_bb)) | |
5888 | add_phi_arg (phi, gimple_phi_result (nphi), se, locus); | |
5889 | } | |
5890 | gcc_assert (gsi_end_p (psi) && (head == NULL || i == head->length ())); | |
5891 | redirect_edge_var_map_clear (re); | |
5892 | if (single_pred_p (fin_bb)) | |
5893 | while (1) | |
5894 | { | |
5895 | psi = gsi_start_phis (fin_bb); | |
5896 | if (gsi_end_p (psi)) | |
5897 | break; | |
5898 | remove_phi_node (&psi, false); | |
5899 | } | |
5900 | ||
5901 | /* Make phi node for trip. */ | |
5902 | phi = create_phi_node (trip_main, iter_part_bb); | |
5903 | add_phi_arg (phi, trip_back, single_succ_edge (trip_update_bb), | |
5904 | UNKNOWN_LOCATION); | |
5905 | add_phi_arg (phi, trip_init, single_succ_edge (entry_bb), | |
5906 | UNKNOWN_LOCATION); | |
5907 | } | |
5908 | ||
5909 | if (!broken_loop) | |
5910 | set_immediate_dominator (CDI_DOMINATORS, trip_update_bb, cont_bb); | |
5911 | set_immediate_dominator (CDI_DOMINATORS, iter_part_bb, | |
5912 | recompute_dominator (CDI_DOMINATORS, iter_part_bb)); | |
5913 | set_immediate_dominator (CDI_DOMINATORS, fin_bb, | |
5914 | recompute_dominator (CDI_DOMINATORS, fin_bb)); | |
5915 | set_immediate_dominator (CDI_DOMINATORS, seq_start_bb, | |
5916 | recompute_dominator (CDI_DOMINATORS, seq_start_bb)); | |
5917 | set_immediate_dominator (CDI_DOMINATORS, body_bb, | |
5918 | recompute_dominator (CDI_DOMINATORS, body_bb)); | |
5919 | ||
5920 | if (!broken_loop) | |
5921 | { | |
99b1c316 MS |
5922 | class loop *loop = body_bb->loop_father; |
5923 | class loop *trip_loop = alloc_loop (); | |
629b3d75 MJ |
5924 | trip_loop->header = iter_part_bb; |
5925 | trip_loop->latch = trip_update_bb; | |
5926 | add_loop (trip_loop, iter_part_bb->loop_father); | |
5927 | ||
5928 | if (loop != entry_bb->loop_father) | |
5929 | { | |
5930 | gcc_assert (loop->header == body_bb); | |
5931 | gcc_assert (loop->latch == region->cont | |
5932 | || single_pred (loop->latch) == region->cont); | |
5933 | trip_loop->inner = loop; | |
5934 | return; | |
5935 | } | |
5936 | ||
5937 | if (!gimple_omp_for_combined_p (fd->for_stmt)) | |
5938 | { | |
5939 | loop = alloc_loop (); | |
5940 | loop->header = body_bb; | |
5941 | if (collapse_bb == NULL) | |
5942 | loop->latch = cont_bb; | |
5943 | add_loop (loop, trip_loop); | |
5944 | } | |
5945 | } | |
5946 | } | |
5947 | ||
629b3d75 MJ |
5948 | /* A subroutine of expand_omp_for. Generate code for a simd non-worksharing |
5949 | loop. Given parameters: | |
5950 | ||
5951 | for (V = N1; V cond N2; V += STEP) BODY; | |
5952 | ||
5953 | where COND is "<" or ">", we generate pseudocode | |
5954 | ||
5955 | V = N1; | |
5956 | goto L1; | |
5957 | L0: | |
5958 | BODY; | |
5959 | V += STEP; | |
5960 | L1: | |
5961 | if (V cond N2) goto L0; else goto L2; | |
5962 | L2: | |
5963 | ||
5964 | For collapsed loops, given parameters: | |
5965 | collapse(3) | |
5966 | for (V1 = N11; V1 cond1 N12; V1 += STEP1) | |
5967 | for (V2 = N21; V2 cond2 N22; V2 += STEP2) | |
5968 | for (V3 = N31; V3 cond3 N32; V3 += STEP3) | |
5969 | BODY; | |
5970 | ||
5971 | we generate pseudocode | |
5972 | ||
5973 | if (cond3 is <) | |
5974 | adj = STEP3 - 1; | |
5975 | else | |
5976 | adj = STEP3 + 1; | |
5977 | count3 = (adj + N32 - N31) / STEP3; | |
5978 | if (cond2 is <) | |
5979 | adj = STEP2 - 1; | |
5980 | else | |
5981 | adj = STEP2 + 1; | |
5982 | count2 = (adj + N22 - N21) / STEP2; | |
5983 | if (cond1 is <) | |
5984 | adj = STEP1 - 1; | |
5985 | else | |
5986 | adj = STEP1 + 1; | |
5987 | count1 = (adj + N12 - N11) / STEP1; | |
5988 | count = count1 * count2 * count3; | |
5989 | V = 0; | |
5990 | V1 = N11; | |
5991 | V2 = N21; | |
5992 | V3 = N31; | |
5993 | goto L1; | |
5994 | L0: | |
5995 | BODY; | |
5996 | V += 1; | |
5997 | V3 += STEP3; | |
5998 | V2 += (V3 cond3 N32) ? 0 : STEP2; | |
5999 | V3 = (V3 cond3 N32) ? V3 : N31; | |
6000 | V1 += (V2 cond2 N22) ? 0 : STEP1; | |
6001 | V2 = (V2 cond2 N22) ? V2 : N21; | |
6002 | L1: | |
6003 | if (V < count) goto L0; else goto L2; | |
6004 | L2: | |
6005 | ||
6006 | */ | |
6007 | ||
6008 | static void | |
6009 | expand_omp_simd (struct omp_region *region, struct omp_for_data *fd) | |
6010 | { | |
6011 | tree type, t; | |
6012 | basic_block entry_bb, cont_bb, exit_bb, l0_bb, l1_bb, l2_bb, l2_dom_bb; | |
6013 | gimple_stmt_iterator gsi; | |
6014 | gimple *stmt; | |
6015 | gcond *cond_stmt; | |
6016 | bool broken_loop = region->cont == NULL; | |
6017 | edge e, ne; | |
6018 | tree *counts = NULL; | |
6019 | int i; | |
6020 | int safelen_int = INT_MAX; | |
fed2a43c | 6021 | bool dont_vectorize = false; |
629b3d75 MJ |
6022 | tree safelen = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), |
6023 | OMP_CLAUSE_SAFELEN); | |
6024 | tree simduid = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), | |
6025 | OMP_CLAUSE__SIMDUID_); | |
fed2a43c JJ |
6026 | tree ifc = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), |
6027 | OMP_CLAUSE_IF); | |
6028 | tree simdlen = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), | |
6029 | OMP_CLAUSE_SIMDLEN); | |
e7393c89 JJ |
6030 | tree condtemp = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), |
6031 | OMP_CLAUSE__CONDTEMP_); | |
629b3d75 | 6032 | tree n1, n2; |
e7393c89 | 6033 | tree cond_var = condtemp ? OMP_CLAUSE_DECL (condtemp) : NULL_TREE; |
629b3d75 MJ |
6034 | |
6035 | if (safelen) | |
6036 | { | |
9d2f08ab | 6037 | poly_uint64 val; |
629b3d75 | 6038 | safelen = OMP_CLAUSE_SAFELEN_EXPR (safelen); |
9d2f08ab | 6039 | if (!poly_int_tree_p (safelen, &val)) |
629b3d75 | 6040 | safelen_int = 0; |
9d2f08ab RS |
6041 | else |
6042 | safelen_int = MIN (constant_lower_bound (val), INT_MAX); | |
629b3d75 MJ |
6043 | if (safelen_int == 1) |
6044 | safelen_int = 0; | |
6045 | } | |
fed2a43c JJ |
6046 | if ((ifc && integer_zerop (OMP_CLAUSE_IF_EXPR (ifc))) |
6047 | || (simdlen && integer_onep (OMP_CLAUSE_SIMDLEN_EXPR (simdlen)))) | |
6048 | { | |
6049 | safelen_int = 0; | |
6050 | dont_vectorize = true; | |
6051 | } | |
629b3d75 MJ |
6052 | type = TREE_TYPE (fd->loop.v); |
6053 | entry_bb = region->entry; | |
6054 | cont_bb = region->cont; | |
6055 | gcc_assert (EDGE_COUNT (entry_bb->succs) == 2); | |
6056 | gcc_assert (broken_loop | |
6057 | || BRANCH_EDGE (entry_bb)->dest == FALLTHRU_EDGE (cont_bb)->dest); | |
6058 | l0_bb = FALLTHRU_EDGE (entry_bb)->dest; | |
6059 | if (!broken_loop) | |
6060 | { | |
6061 | gcc_assert (BRANCH_EDGE (cont_bb)->dest == l0_bb); | |
6062 | gcc_assert (EDGE_COUNT (cont_bb->succs) == 2); | |
6063 | l1_bb = split_block (cont_bb, last_stmt (cont_bb))->dest; | |
6064 | l2_bb = BRANCH_EDGE (entry_bb)->dest; | |
6065 | } | |
6066 | else | |
6067 | { | |
6068 | BRANCH_EDGE (entry_bb)->flags &= ~EDGE_ABNORMAL; | |
6069 | l1_bb = split_edge (BRANCH_EDGE (entry_bb)); | |
6070 | l2_bb = single_succ (l1_bb); | |
6071 | } | |
6072 | exit_bb = region->exit; | |
6073 | l2_dom_bb = NULL; | |
6074 | ||
65f4b875 | 6075 | gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
6076 | |
6077 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); | |
6078 | /* Not needed in SSA form right now. */ | |
6079 | gcc_assert (!gimple_in_ssa_p (cfun)); | |
6080 | if (fd->collapse > 1) | |
6081 | { | |
6082 | int first_zero_iter = -1, dummy = -1; | |
6083 | basic_block zero_iter_bb = l2_bb, dummy_bb = NULL; | |
6084 | ||
6085 | counts = XALLOCAVEC (tree, fd->collapse); | |
6086 | expand_omp_for_init_counts (fd, &gsi, entry_bb, counts, | |
6087 | zero_iter_bb, first_zero_iter, | |
6088 | dummy_bb, dummy, l2_dom_bb); | |
6089 | } | |
6090 | if (l2_dom_bb == NULL) | |
6091 | l2_dom_bb = l1_bb; | |
6092 | ||
6093 | n1 = fd->loop.n1; | |
6094 | n2 = fd->loop.n2; | |
6095 | if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
6096 | { | |
6097 | tree innerc = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), | |
6098 | OMP_CLAUSE__LOOPTEMP_); | |
6099 | gcc_assert (innerc); | |
6100 | n1 = OMP_CLAUSE_DECL (innerc); | |
6101 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
6102 | OMP_CLAUSE__LOOPTEMP_); | |
6103 | gcc_assert (innerc); | |
6104 | n2 = OMP_CLAUSE_DECL (innerc); | |
6105 | } | |
6106 | tree step = fd->loop.step; | |
6107 | ||
4cea8675 AM |
6108 | bool is_simt = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), |
6109 | OMP_CLAUSE__SIMT_); | |
629b3d75 MJ |
6110 | if (is_simt) |
6111 | { | |
6112 | cfun->curr_properties &= ~PROP_gimple_lomp_dev; | |
4cea8675 AM |
6113 | is_simt = safelen_int > 1; |
6114 | } | |
6115 | tree simt_lane = NULL_TREE, simt_maxlane = NULL_TREE; | |
6116 | if (is_simt) | |
6117 | { | |
629b3d75 MJ |
6118 | simt_lane = create_tmp_var (unsigned_type_node); |
6119 | gimple *g = gimple_build_call_internal (IFN_GOMP_SIMT_LANE, 0); | |
6120 | gimple_call_set_lhs (g, simt_lane); | |
6121 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
6122 | tree offset = fold_build2 (MULT_EXPR, TREE_TYPE (step), step, | |
6123 | fold_convert (TREE_TYPE (step), simt_lane)); | |
6124 | n1 = fold_convert (type, n1); | |
6125 | if (POINTER_TYPE_P (type)) | |
6126 | n1 = fold_build_pointer_plus (n1, offset); | |
6127 | else | |
6128 | n1 = fold_build2 (PLUS_EXPR, type, n1, fold_convert (type, offset)); | |
6129 | ||
6130 | /* Collapsed loops not handled for SIMT yet: limit to one lane only. */ | |
6131 | if (fd->collapse > 1) | |
6132 | simt_maxlane = build_one_cst (unsigned_type_node); | |
6133 | else if (safelen_int < omp_max_simt_vf ()) | |
6134 | simt_maxlane = build_int_cst (unsigned_type_node, safelen_int); | |
6135 | tree vf | |
6136 | = build_call_expr_internal_loc (UNKNOWN_LOCATION, IFN_GOMP_SIMT_VF, | |
6137 | unsigned_type_node, 0); | |
6138 | if (simt_maxlane) | |
6139 | vf = fold_build2 (MIN_EXPR, unsigned_type_node, vf, simt_maxlane); | |
6140 | vf = fold_convert (TREE_TYPE (step), vf); | |
6141 | step = fold_build2 (MULT_EXPR, TREE_TYPE (step), step, vf); | |
6142 | } | |
6143 | ||
6144 | expand_omp_build_assign (&gsi, fd->loop.v, fold_convert (type, n1)); | |
6145 | if (fd->collapse > 1) | |
6146 | { | |
6147 | if (gimple_omp_for_combined_into_p (fd->for_stmt)) | |
6148 | { | |
6149 | gsi_prev (&gsi); | |
aed3ab25 | 6150 | expand_omp_for_init_vars (fd, &gsi, counts, NULL, NULL, n1); |
629b3d75 MJ |
6151 | gsi_next (&gsi); |
6152 | } | |
6153 | else | |
6154 | for (i = 0; i < fd->collapse; i++) | |
6155 | { | |
6156 | tree itype = TREE_TYPE (fd->loops[i].v); | |
6157 | if (POINTER_TYPE_P (itype)) | |
6158 | itype = signed_type_for (itype); | |
6159 | t = fold_convert (TREE_TYPE (fd->loops[i].v), fd->loops[i].n1); | |
6160 | expand_omp_build_assign (&gsi, fd->loops[i].v, t); | |
6161 | } | |
6162 | } | |
e7393c89 JJ |
6163 | if (cond_var) |
6164 | { | |
6165 | if (POINTER_TYPE_P (type) | |
6166 | || TREE_CODE (n1) != INTEGER_CST | |
6167 | || fd->loop.cond_code != LT_EXPR | |
6168 | || tree_int_cst_sgn (n1) != 1) | |
6169 | expand_omp_build_assign (&gsi, cond_var, | |
6170 | build_one_cst (TREE_TYPE (cond_var))); | |
6171 | else | |
6172 | expand_omp_build_assign (&gsi, cond_var, | |
6173 | fold_convert (TREE_TYPE (cond_var), n1)); | |
6174 | } | |
629b3d75 MJ |
6175 | |
6176 | /* Remove the GIMPLE_OMP_FOR statement. */ | |
6177 | gsi_remove (&gsi, true); | |
6178 | ||
6179 | if (!broken_loop) | |
6180 | { | |
6181 | /* Code to control the increment goes in the CONT_BB. */ | |
65f4b875 | 6182 | gsi = gsi_last_nondebug_bb (cont_bb); |
629b3d75 MJ |
6183 | stmt = gsi_stmt (gsi); |
6184 | gcc_assert (gimple_code (stmt) == GIMPLE_OMP_CONTINUE); | |
6185 | ||
6186 | if (POINTER_TYPE_P (type)) | |
6187 | t = fold_build_pointer_plus (fd->loop.v, step); | |
6188 | else | |
6189 | t = fold_build2 (PLUS_EXPR, type, fd->loop.v, step); | |
6190 | expand_omp_build_assign (&gsi, fd->loop.v, t); | |
6191 | ||
6192 | if (fd->collapse > 1) | |
6193 | { | |
6194 | i = fd->collapse - 1; | |
6195 | if (POINTER_TYPE_P (TREE_TYPE (fd->loops[i].v))) | |
6196 | { | |
6197 | t = fold_convert (sizetype, fd->loops[i].step); | |
6198 | t = fold_build_pointer_plus (fd->loops[i].v, t); | |
6199 | } | |
6200 | else | |
6201 | { | |
6202 | t = fold_convert (TREE_TYPE (fd->loops[i].v), | |
6203 | fd->loops[i].step); | |
6204 | t = fold_build2 (PLUS_EXPR, TREE_TYPE (fd->loops[i].v), | |
6205 | fd->loops[i].v, t); | |
6206 | } | |
6207 | expand_omp_build_assign (&gsi, fd->loops[i].v, t); | |
6208 | ||
6209 | for (i = fd->collapse - 1; i > 0; i--) | |
6210 | { | |
6211 | tree itype = TREE_TYPE (fd->loops[i].v); | |
6212 | tree itype2 = TREE_TYPE (fd->loops[i - 1].v); | |
6213 | if (POINTER_TYPE_P (itype2)) | |
6214 | itype2 = signed_type_for (itype2); | |
bcc6842b JJ |
6215 | t = fold_convert (itype2, fd->loops[i - 1].step); |
6216 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, true, | |
6217 | GSI_SAME_STMT); | |
629b3d75 MJ |
6218 | t = build3 (COND_EXPR, itype2, |
6219 | build2 (fd->loops[i].cond_code, boolean_type_node, | |
6220 | fd->loops[i].v, | |
6221 | fold_convert (itype, fd->loops[i].n2)), | |
bcc6842b | 6222 | build_int_cst (itype2, 0), t); |
629b3d75 MJ |
6223 | if (POINTER_TYPE_P (TREE_TYPE (fd->loops[i - 1].v))) |
6224 | t = fold_build_pointer_plus (fd->loops[i - 1].v, t); | |
6225 | else | |
6226 | t = fold_build2 (PLUS_EXPR, itype2, fd->loops[i - 1].v, t); | |
6227 | expand_omp_build_assign (&gsi, fd->loops[i - 1].v, t); | |
6228 | ||
bcc6842b JJ |
6229 | t = fold_convert (itype, fd->loops[i].n1); |
6230 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, true, | |
6231 | GSI_SAME_STMT); | |
629b3d75 MJ |
6232 | t = build3 (COND_EXPR, itype, |
6233 | build2 (fd->loops[i].cond_code, boolean_type_node, | |
6234 | fd->loops[i].v, | |
6235 | fold_convert (itype, fd->loops[i].n2)), | |
bcc6842b | 6236 | fd->loops[i].v, t); |
629b3d75 MJ |
6237 | expand_omp_build_assign (&gsi, fd->loops[i].v, t); |
6238 | } | |
6239 | } | |
e7393c89 JJ |
6240 | if (cond_var) |
6241 | { | |
6242 | if (POINTER_TYPE_P (type) | |
6243 | || TREE_CODE (n1) != INTEGER_CST | |
6244 | || fd->loop.cond_code != LT_EXPR | |
6245 | || tree_int_cst_sgn (n1) != 1) | |
6246 | t = fold_build2 (PLUS_EXPR, TREE_TYPE (cond_var), cond_var, | |
6247 | build_one_cst (TREE_TYPE (cond_var))); | |
6248 | else | |
6249 | t = fold_build2 (PLUS_EXPR, TREE_TYPE (cond_var), cond_var, | |
6250 | fold_convert (TREE_TYPE (cond_var), step)); | |
6251 | expand_omp_build_assign (&gsi, cond_var, t); | |
6252 | } | |
629b3d75 MJ |
6253 | |
6254 | /* Remove GIMPLE_OMP_CONTINUE. */ | |
6255 | gsi_remove (&gsi, true); | |
6256 | } | |
6257 | ||
6258 | /* Emit the condition in L1_BB. */ | |
6259 | gsi = gsi_start_bb (l1_bb); | |
6260 | ||
6261 | t = fold_convert (type, n2); | |
6262 | t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
6263 | false, GSI_CONTINUE_LINKING); | |
6264 | tree v = fd->loop.v; | |
6265 | if (DECL_P (v) && TREE_ADDRESSABLE (v)) | |
6266 | v = force_gimple_operand_gsi (&gsi, v, true, NULL_TREE, | |
6267 | false, GSI_CONTINUE_LINKING); | |
6268 | t = build2 (fd->loop.cond_code, boolean_type_node, v, t); | |
6269 | cond_stmt = gimple_build_cond_empty (t); | |
6270 | gsi_insert_after (&gsi, cond_stmt, GSI_CONTINUE_LINKING); | |
6271 | if (walk_tree (gimple_cond_lhs_ptr (cond_stmt), expand_omp_regimplify_p, | |
6272 | NULL, NULL) | |
6273 | || walk_tree (gimple_cond_rhs_ptr (cond_stmt), expand_omp_regimplify_p, | |
6274 | NULL, NULL)) | |
6275 | { | |
6276 | gsi = gsi_for_stmt (cond_stmt); | |
6277 | gimple_regimplify_operands (cond_stmt, &gsi); | |
6278 | } | |
6279 | ||
6280 | /* Add 'V -= STEP * (SIMT_VF - 1)' after the loop. */ | |
6281 | if (is_simt) | |
6282 | { | |
6283 | gsi = gsi_start_bb (l2_bb); | |
6284 | step = fold_build2 (MINUS_EXPR, TREE_TYPE (step), fd->loop.step, step); | |
6285 | if (POINTER_TYPE_P (type)) | |
6286 | t = fold_build_pointer_plus (fd->loop.v, step); | |
6287 | else | |
6288 | t = fold_build2 (PLUS_EXPR, type, fd->loop.v, step); | |
6289 | expand_omp_build_assign (&gsi, fd->loop.v, t); | |
6290 | } | |
6291 | ||
6292 | /* Remove GIMPLE_OMP_RETURN. */ | |
65f4b875 | 6293 | gsi = gsi_last_nondebug_bb (exit_bb); |
629b3d75 MJ |
6294 | gsi_remove (&gsi, true); |
6295 | ||
6296 | /* Connect the new blocks. */ | |
6297 | remove_edge (FALLTHRU_EDGE (entry_bb)); | |
6298 | ||
6299 | if (!broken_loop) | |
6300 | { | |
6301 | remove_edge (BRANCH_EDGE (entry_bb)); | |
6302 | make_edge (entry_bb, l1_bb, EDGE_FALLTHRU); | |
6303 | ||
6304 | e = BRANCH_EDGE (l1_bb); | |
6305 | ne = FALLTHRU_EDGE (l1_bb); | |
6306 | e->flags = EDGE_TRUE_VALUE; | |
6307 | } | |
6308 | else | |
6309 | { | |
6310 | single_succ_edge (entry_bb)->flags = EDGE_FALLTHRU; | |
6311 | ||
6312 | ne = single_succ_edge (l1_bb); | |
6313 | e = make_edge (l1_bb, l0_bb, EDGE_TRUE_VALUE); | |
6314 | ||
6315 | } | |
6316 | ne->flags = EDGE_FALSE_VALUE; | |
357067f2 JH |
6317 | e->probability = profile_probability::guessed_always ().apply_scale (7, 8); |
6318 | ne->probability = e->probability.invert (); | |
629b3d75 MJ |
6319 | |
6320 | set_immediate_dominator (CDI_DOMINATORS, l1_bb, entry_bb); | |
6321 | set_immediate_dominator (CDI_DOMINATORS, l0_bb, l1_bb); | |
6322 | ||
6323 | if (simt_maxlane) | |
6324 | { | |
6325 | cond_stmt = gimple_build_cond (LT_EXPR, simt_lane, simt_maxlane, | |
6326 | NULL_TREE, NULL_TREE); | |
6327 | gsi = gsi_last_bb (entry_bb); | |
6328 | gsi_insert_after (&gsi, cond_stmt, GSI_NEW_STMT); | |
6329 | make_edge (entry_bb, l2_bb, EDGE_FALSE_VALUE); | |
6330 | FALLTHRU_EDGE (entry_bb)->flags = EDGE_TRUE_VALUE; | |
357067f2 JH |
6331 | FALLTHRU_EDGE (entry_bb)->probability |
6332 | = profile_probability::guessed_always ().apply_scale (7, 8); | |
6333 | BRANCH_EDGE (entry_bb)->probability | |
6334 | = FALLTHRU_EDGE (entry_bb)->probability.invert (); | |
629b3d75 MJ |
6335 | l2_dom_bb = entry_bb; |
6336 | } | |
6337 | set_immediate_dominator (CDI_DOMINATORS, l2_bb, l2_dom_bb); | |
6338 | ||
6339 | if (!broken_loop) | |
6340 | { | |
99b1c316 | 6341 | class loop *loop = alloc_loop (); |
629b3d75 MJ |
6342 | loop->header = l1_bb; |
6343 | loop->latch = cont_bb; | |
6344 | add_loop (loop, l1_bb->loop_father); | |
6345 | loop->safelen = safelen_int; | |
6346 | if (simduid) | |
6347 | { | |
6348 | loop->simduid = OMP_CLAUSE__SIMDUID__DECL (simduid); | |
6349 | cfun->has_simduid_loops = true; | |
6350 | } | |
6351 | /* If not -fno-tree-loop-vectorize, hint that we want to vectorize | |
6352 | the loop. */ | |
6353 | if ((flag_tree_loop_vectorize | |
26d476cd | 6354 | || !global_options_set.x_flag_tree_loop_vectorize) |
629b3d75 MJ |
6355 | && flag_tree_loop_optimize |
6356 | && loop->safelen > 1) | |
6357 | { | |
6358 | loop->force_vectorize = true; | |
f63445e5 JJ |
6359 | if (simdlen && tree_fits_uhwi_p (OMP_CLAUSE_SIMDLEN_EXPR (simdlen))) |
6360 | { | |
6361 | unsigned HOST_WIDE_INT v | |
6362 | = tree_to_uhwi (OMP_CLAUSE_SIMDLEN_EXPR (simdlen)); | |
6363 | if (v < INT_MAX && v <= (unsigned HOST_WIDE_INT) loop->safelen) | |
6364 | loop->simdlen = v; | |
6365 | } | |
629b3d75 MJ |
6366 | cfun->has_force_vectorize_loops = true; |
6367 | } | |
fed2a43c JJ |
6368 | else if (dont_vectorize) |
6369 | loop->dont_vectorize = true; | |
629b3d75 MJ |
6370 | } |
6371 | else if (simduid) | |
6372 | cfun->has_simduid_loops = true; | |
6373 | } | |
6374 | ||
6375 | /* Taskloop construct is represented after gimplification with | |
6376 | two GIMPLE_OMP_FOR constructs with GIMPLE_OMP_TASK sandwiched | |
6377 | in between them. This routine expands the outer GIMPLE_OMP_FOR, | |
6378 | which should just compute all the needed loop temporaries | |
6379 | for GIMPLE_OMP_TASK. */ | |
6380 | ||
6381 | static void | |
6382 | expand_omp_taskloop_for_outer (struct omp_region *region, | |
6383 | struct omp_for_data *fd, | |
6384 | gimple *inner_stmt) | |
6385 | { | |
6386 | tree type, bias = NULL_TREE; | |
6387 | basic_block entry_bb, cont_bb, exit_bb; | |
6388 | gimple_stmt_iterator gsi; | |
6389 | gassign *assign_stmt; | |
6390 | tree *counts = NULL; | |
6391 | int i; | |
6392 | ||
6393 | gcc_assert (inner_stmt); | |
6394 | gcc_assert (region->cont); | |
6395 | gcc_assert (gimple_code (inner_stmt) == GIMPLE_OMP_TASK | |
6396 | && gimple_omp_task_taskloop_p (inner_stmt)); | |
6397 | type = TREE_TYPE (fd->loop.v); | |
6398 | ||
6399 | /* See if we need to bias by LLONG_MIN. */ | |
6400 | if (fd->iter_type == long_long_unsigned_type_node | |
6401 | && TREE_CODE (type) == INTEGER_TYPE | |
6402 | && !TYPE_UNSIGNED (type)) | |
6403 | { | |
6404 | tree n1, n2; | |
6405 | ||
6406 | if (fd->loop.cond_code == LT_EXPR) | |
6407 | { | |
6408 | n1 = fd->loop.n1; | |
6409 | n2 = fold_build2 (PLUS_EXPR, type, fd->loop.n2, fd->loop.step); | |
6410 | } | |
6411 | else | |
6412 | { | |
6413 | n1 = fold_build2 (MINUS_EXPR, type, fd->loop.n2, fd->loop.step); | |
6414 | n2 = fd->loop.n1; | |
6415 | } | |
6416 | if (TREE_CODE (n1) != INTEGER_CST | |
6417 | || TREE_CODE (n2) != INTEGER_CST | |
6418 | || ((tree_int_cst_sgn (n1) < 0) ^ (tree_int_cst_sgn (n2) < 0))) | |
6419 | bias = fold_convert (fd->iter_type, TYPE_MIN_VALUE (type)); | |
6420 | } | |
6421 | ||
6422 | entry_bb = region->entry; | |
6423 | cont_bb = region->cont; | |
6424 | gcc_assert (EDGE_COUNT (entry_bb->succs) == 2); | |
6425 | gcc_assert (BRANCH_EDGE (entry_bb)->dest == FALLTHRU_EDGE (cont_bb)->dest); | |
6426 | exit_bb = region->exit; | |
6427 | ||
65f4b875 | 6428 | gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
6429 | gimple *for_stmt = gsi_stmt (gsi); |
6430 | gcc_assert (gimple_code (for_stmt) == GIMPLE_OMP_FOR); | |
6431 | if (fd->collapse > 1) | |
6432 | { | |
6433 | int first_zero_iter = -1, dummy = -1; | |
6434 | basic_block zero_iter_bb = NULL, dummy_bb = NULL, l2_dom_bb = NULL; | |
6435 | ||
6436 | counts = XALLOCAVEC (tree, fd->collapse); | |
6437 | expand_omp_for_init_counts (fd, &gsi, entry_bb, counts, | |
6438 | zero_iter_bb, first_zero_iter, | |
6439 | dummy_bb, dummy, l2_dom_bb); | |
6440 | ||
6441 | if (zero_iter_bb) | |
6442 | { | |
6443 | /* Some counts[i] vars might be uninitialized if | |
6444 | some loop has zero iterations. But the body shouldn't | |
6445 | be executed in that case, so just avoid uninit warnings. */ | |
6446 | for (i = first_zero_iter; i < fd->collapse; i++) | |
6447 | if (SSA_VAR_P (counts[i])) | |
6448 | TREE_NO_WARNING (counts[i]) = 1; | |
6449 | gsi_prev (&gsi); | |
6450 | edge e = split_block (entry_bb, gsi_stmt (gsi)); | |
6451 | entry_bb = e->dest; | |
6452 | make_edge (zero_iter_bb, entry_bb, EDGE_FALLTHRU); | |
6453 | gsi = gsi_last_bb (entry_bb); | |
6454 | set_immediate_dominator (CDI_DOMINATORS, entry_bb, | |
6455 | get_immediate_dominator (CDI_DOMINATORS, | |
6456 | zero_iter_bb)); | |
6457 | } | |
6458 | } | |
6459 | ||
6460 | tree t0, t1; | |
6461 | t1 = fd->loop.n2; | |
6462 | t0 = fd->loop.n1; | |
6463 | if (POINTER_TYPE_P (TREE_TYPE (t0)) | |
6464 | && TYPE_PRECISION (TREE_TYPE (t0)) | |
6465 | != TYPE_PRECISION (fd->iter_type)) | |
6466 | { | |
6467 | /* Avoid casting pointers to integer of a different size. */ | |
6468 | tree itype = signed_type_for (type); | |
6469 | t1 = fold_convert (fd->iter_type, fold_convert (itype, t1)); | |
6470 | t0 = fold_convert (fd->iter_type, fold_convert (itype, t0)); | |
6471 | } | |
6472 | else | |
6473 | { | |
6474 | t1 = fold_convert (fd->iter_type, t1); | |
6475 | t0 = fold_convert (fd->iter_type, t0); | |
6476 | } | |
6477 | if (bias) | |
6478 | { | |
6479 | t1 = fold_build2 (PLUS_EXPR, fd->iter_type, t1, bias); | |
6480 | t0 = fold_build2 (PLUS_EXPR, fd->iter_type, t0, bias); | |
6481 | } | |
6482 | ||
6483 | tree innerc = omp_find_clause (gimple_omp_task_clauses (inner_stmt), | |
6484 | OMP_CLAUSE__LOOPTEMP_); | |
6485 | gcc_assert (innerc); | |
6486 | tree startvar = OMP_CLAUSE_DECL (innerc); | |
6487 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), OMP_CLAUSE__LOOPTEMP_); | |
6488 | gcc_assert (innerc); | |
6489 | tree endvar = OMP_CLAUSE_DECL (innerc); | |
6490 | if (fd->collapse > 1 && TREE_CODE (fd->loop.n2) != INTEGER_CST) | |
6491 | { | |
6492 | gcc_assert (innerc); | |
6493 | for (i = 1; i < fd->collapse; i++) | |
6494 | { | |
6495 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
6496 | OMP_CLAUSE__LOOPTEMP_); | |
6497 | gcc_assert (innerc); | |
6498 | } | |
6499 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
6500 | OMP_CLAUSE__LOOPTEMP_); | |
6501 | if (innerc) | |
6502 | { | |
6503 | /* If needed (inner taskloop has lastprivate clause), propagate | |
6504 | down the total number of iterations. */ | |
6505 | tree t = force_gimple_operand_gsi (&gsi, fd->loop.n2, false, | |
6506 | NULL_TREE, false, | |
6507 | GSI_CONTINUE_LINKING); | |
6508 | assign_stmt = gimple_build_assign (OMP_CLAUSE_DECL (innerc), t); | |
6509 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
6510 | } | |
6511 | } | |
6512 | ||
6513 | t0 = force_gimple_operand_gsi (&gsi, t0, false, NULL_TREE, false, | |
6514 | GSI_CONTINUE_LINKING); | |
6515 | assign_stmt = gimple_build_assign (startvar, t0); | |
6516 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
6517 | ||
6518 | t1 = force_gimple_operand_gsi (&gsi, t1, false, NULL_TREE, false, | |
6519 | GSI_CONTINUE_LINKING); | |
6520 | assign_stmt = gimple_build_assign (endvar, t1); | |
6521 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
6522 | if (fd->collapse > 1) | |
aed3ab25 | 6523 | expand_omp_for_init_vars (fd, &gsi, counts, NULL, inner_stmt, startvar); |
629b3d75 MJ |
6524 | |
6525 | /* Remove the GIMPLE_OMP_FOR statement. */ | |
6526 | gsi = gsi_for_stmt (for_stmt); | |
6527 | gsi_remove (&gsi, true); | |
6528 | ||
65f4b875 | 6529 | gsi = gsi_last_nondebug_bb (cont_bb); |
629b3d75 MJ |
6530 | gsi_remove (&gsi, true); |
6531 | ||
65f4b875 | 6532 | gsi = gsi_last_nondebug_bb (exit_bb); |
629b3d75 MJ |
6533 | gsi_remove (&gsi, true); |
6534 | ||
357067f2 | 6535 | FALLTHRU_EDGE (entry_bb)->probability = profile_probability::always (); |
629b3d75 | 6536 | remove_edge (BRANCH_EDGE (entry_bb)); |
357067f2 | 6537 | FALLTHRU_EDGE (cont_bb)->probability = profile_probability::always (); |
629b3d75 MJ |
6538 | remove_edge (BRANCH_EDGE (cont_bb)); |
6539 | set_immediate_dominator (CDI_DOMINATORS, exit_bb, cont_bb); | |
6540 | set_immediate_dominator (CDI_DOMINATORS, region->entry, | |
6541 | recompute_dominator (CDI_DOMINATORS, region->entry)); | |
6542 | } | |
6543 | ||
6544 | /* Taskloop construct is represented after gimplification with | |
6545 | two GIMPLE_OMP_FOR constructs with GIMPLE_OMP_TASK sandwiched | |
6546 | in between them. This routine expands the inner GIMPLE_OMP_FOR. | |
6547 | GOMP_taskloop{,_ull} function arranges for each task to be given just | |
6548 | a single range of iterations. */ | |
6549 | ||
6550 | static void | |
6551 | expand_omp_taskloop_for_inner (struct omp_region *region, | |
6552 | struct omp_for_data *fd, | |
6553 | gimple *inner_stmt) | |
6554 | { | |
6555 | tree e, t, type, itype, vmain, vback, bias = NULL_TREE; | |
6556 | basic_block entry_bb, exit_bb, body_bb, cont_bb, collapse_bb = NULL; | |
6557 | basic_block fin_bb; | |
6558 | gimple_stmt_iterator gsi; | |
6559 | edge ep; | |
6560 | bool broken_loop = region->cont == NULL; | |
6561 | tree *counts = NULL; | |
6562 | tree n1, n2, step; | |
6563 | ||
6564 | itype = type = TREE_TYPE (fd->loop.v); | |
6565 | if (POINTER_TYPE_P (type)) | |
6566 | itype = signed_type_for (type); | |
6567 | ||
6568 | /* See if we need to bias by LLONG_MIN. */ | |
6569 | if (fd->iter_type == long_long_unsigned_type_node | |
6570 | && TREE_CODE (type) == INTEGER_TYPE | |
6571 | && !TYPE_UNSIGNED (type)) | |
6572 | { | |
6573 | tree n1, n2; | |
6574 | ||
6575 | if (fd->loop.cond_code == LT_EXPR) | |
6576 | { | |
6577 | n1 = fd->loop.n1; | |
6578 | n2 = fold_build2 (PLUS_EXPR, type, fd->loop.n2, fd->loop.step); | |
6579 | } | |
6580 | else | |
6581 | { | |
6582 | n1 = fold_build2 (MINUS_EXPR, type, fd->loop.n2, fd->loop.step); | |
6583 | n2 = fd->loop.n1; | |
6584 | } | |
6585 | if (TREE_CODE (n1) != INTEGER_CST | |
6586 | || TREE_CODE (n2) != INTEGER_CST | |
6587 | || ((tree_int_cst_sgn (n1) < 0) ^ (tree_int_cst_sgn (n2) < 0))) | |
6588 | bias = fold_convert (fd->iter_type, TYPE_MIN_VALUE (type)); | |
6589 | } | |
6590 | ||
6591 | entry_bb = region->entry; | |
6592 | cont_bb = region->cont; | |
6593 | gcc_assert (EDGE_COUNT (entry_bb->succs) == 2); | |
6594 | fin_bb = BRANCH_EDGE (entry_bb)->dest; | |
6595 | gcc_assert (broken_loop | |
6596 | || (fin_bb == FALLTHRU_EDGE (cont_bb)->dest)); | |
6597 | body_bb = FALLTHRU_EDGE (entry_bb)->dest; | |
6598 | if (!broken_loop) | |
6599 | { | |
6600 | gcc_assert (BRANCH_EDGE (cont_bb)->dest == body_bb); | |
6601 | gcc_assert (EDGE_COUNT (cont_bb->succs) == 2); | |
6602 | } | |
6603 | exit_bb = region->exit; | |
6604 | ||
6605 | /* Iteration space partitioning goes in ENTRY_BB. */ | |
65f4b875 | 6606 | gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
6607 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR); |
6608 | ||
6609 | if (fd->collapse > 1) | |
6610 | { | |
6611 | int first_zero_iter = -1, dummy = -1; | |
6612 | basic_block l2_dom_bb = NULL, dummy_bb = NULL; | |
6613 | ||
6614 | counts = XALLOCAVEC (tree, fd->collapse); | |
6615 | expand_omp_for_init_counts (fd, &gsi, entry_bb, counts, | |
6616 | fin_bb, first_zero_iter, | |
6617 | dummy_bb, dummy, l2_dom_bb); | |
6618 | t = NULL_TREE; | |
6619 | } | |
6620 | else | |
6621 | t = integer_one_node; | |
6622 | ||
6623 | step = fd->loop.step; | |
6624 | tree innerc = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt), | |
6625 | OMP_CLAUSE__LOOPTEMP_); | |
6626 | gcc_assert (innerc); | |
6627 | n1 = OMP_CLAUSE_DECL (innerc); | |
6628 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), OMP_CLAUSE__LOOPTEMP_); | |
6629 | gcc_assert (innerc); | |
6630 | n2 = OMP_CLAUSE_DECL (innerc); | |
6631 | if (bias) | |
6632 | { | |
6633 | n1 = fold_build2 (PLUS_EXPR, fd->iter_type, n1, bias); | |
6634 | n2 = fold_build2 (PLUS_EXPR, fd->iter_type, n2, bias); | |
6635 | } | |
6636 | n1 = force_gimple_operand_gsi (&gsi, fold_convert (type, n1), | |
6637 | true, NULL_TREE, true, GSI_SAME_STMT); | |
6638 | n2 = force_gimple_operand_gsi (&gsi, fold_convert (itype, n2), | |
6639 | true, NULL_TREE, true, GSI_SAME_STMT); | |
6640 | step = force_gimple_operand_gsi (&gsi, fold_convert (itype, step), | |
6641 | true, NULL_TREE, true, GSI_SAME_STMT); | |
6642 | ||
6643 | tree startvar = fd->loop.v; | |
6644 | tree endvar = NULL_TREE; | |
6645 | ||
6646 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
6647 | { | |
6648 | tree clauses = gimple_omp_for_clauses (inner_stmt); | |
6649 | tree innerc = omp_find_clause (clauses, OMP_CLAUSE__LOOPTEMP_); | |
6650 | gcc_assert (innerc); | |
6651 | startvar = OMP_CLAUSE_DECL (innerc); | |
6652 | innerc = omp_find_clause (OMP_CLAUSE_CHAIN (innerc), | |
6653 | OMP_CLAUSE__LOOPTEMP_); | |
6654 | gcc_assert (innerc); | |
6655 | endvar = OMP_CLAUSE_DECL (innerc); | |
6656 | } | |
6657 | t = fold_convert (TREE_TYPE (startvar), n1); | |
6658 | t = force_gimple_operand_gsi (&gsi, t, | |
6659 | DECL_P (startvar) | |
6660 | && TREE_ADDRESSABLE (startvar), | |
6661 | NULL_TREE, false, GSI_CONTINUE_LINKING); | |
6662 | gimple *assign_stmt = gimple_build_assign (startvar, t); | |
6663 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
6664 | ||
6665 | t = fold_convert (TREE_TYPE (startvar), n2); | |
6666 | e = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE, | |
6667 | false, GSI_CONTINUE_LINKING); | |
6668 | if (endvar) | |
6669 | { | |
6670 | assign_stmt = gimple_build_assign (endvar, e); | |
6671 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
6672 | if (useless_type_conversion_p (TREE_TYPE (fd->loop.v), TREE_TYPE (e))) | |
6673 | assign_stmt = gimple_build_assign (fd->loop.v, e); | |
6674 | else | |
6675 | assign_stmt = gimple_build_assign (fd->loop.v, NOP_EXPR, e); | |
6676 | gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING); | |
6677 | } | |
6678 | if (fd->collapse > 1) | |
aed3ab25 | 6679 | expand_omp_for_init_vars (fd, &gsi, counts, NULL, inner_stmt, startvar); |
629b3d75 MJ |
6680 | |
6681 | if (!broken_loop) | |
6682 | { | |
6683 | /* The code controlling the sequential loop replaces the | |
6684 | GIMPLE_OMP_CONTINUE. */ | |
65f4b875 | 6685 | gsi = gsi_last_nondebug_bb (cont_bb); |
629b3d75 MJ |
6686 | gomp_continue *cont_stmt = as_a <gomp_continue *> (gsi_stmt (gsi)); |
6687 | gcc_assert (gimple_code (cont_stmt) == GIMPLE_OMP_CONTINUE); | |
6688 | vmain = gimple_omp_continue_control_use (cont_stmt); | |
6689 | vback = gimple_omp_continue_control_def (cont_stmt); | |
6690 | ||
6691 | if (!gimple_omp_for_combined_p (fd->for_stmt)) | |
6692 | { | |
6693 | if (POINTER_TYPE_P (type)) | |
6694 | t = fold_build_pointer_plus (vmain, step); | |
6695 | else | |
6696 | t = fold_build2 (PLUS_EXPR, type, vmain, step); | |
6697 | t = force_gimple_operand_gsi (&gsi, t, | |
6698 | DECL_P (vback) | |
6699 | && TREE_ADDRESSABLE (vback), | |
6700 | NULL_TREE, true, GSI_SAME_STMT); | |
6701 | assign_stmt = gimple_build_assign (vback, t); | |
6702 | gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT); | |
6703 | ||
6704 | t = build2 (fd->loop.cond_code, boolean_type_node, | |
6705 | DECL_P (vback) && TREE_ADDRESSABLE (vback) | |
6706 | ? t : vback, e); | |
6707 | gsi_insert_before (&gsi, gimple_build_cond_empty (t), GSI_SAME_STMT); | |
6708 | } | |
6709 | ||
6710 | /* Remove the GIMPLE_OMP_CONTINUE statement. */ | |
6711 | gsi_remove (&gsi, true); | |
6712 | ||
6713 | if (fd->collapse > 1 && !gimple_omp_for_combined_p (fd->for_stmt)) | |
aed3ab25 | 6714 | collapse_bb = extract_omp_for_update_vars (fd, NULL, cont_bb, body_bb); |
629b3d75 MJ |
6715 | } |
6716 | ||
6717 | /* Remove the GIMPLE_OMP_FOR statement. */ | |
6718 | gsi = gsi_for_stmt (fd->for_stmt); | |
6719 | gsi_remove (&gsi, true); | |
6720 | ||
6721 | /* Remove the GIMPLE_OMP_RETURN statement. */ | |
65f4b875 | 6722 | gsi = gsi_last_nondebug_bb (exit_bb); |
629b3d75 MJ |
6723 | gsi_remove (&gsi, true); |
6724 | ||
357067f2 | 6725 | FALLTHRU_EDGE (entry_bb)->probability = profile_probability::always (); |
629b3d75 MJ |
6726 | if (!broken_loop) |
6727 | remove_edge (BRANCH_EDGE (entry_bb)); | |
6728 | else | |
6729 | { | |
6730 | remove_edge_and_dominated_blocks (BRANCH_EDGE (entry_bb)); | |
6731 | region->outer->cont = NULL; | |
6732 | } | |
6733 | ||
6734 | /* Connect all the blocks. */ | |
6735 | if (!broken_loop) | |
6736 | { | |
6737 | ep = find_edge (cont_bb, body_bb); | |
6738 | if (gimple_omp_for_combined_p (fd->for_stmt)) | |
6739 | { | |
6740 | remove_edge (ep); | |
6741 | ep = NULL; | |
6742 | } | |
6743 | else if (fd->collapse > 1) | |
6744 | { | |
6745 | remove_edge (ep); | |
6746 | ep = make_edge (cont_bb, collapse_bb, EDGE_TRUE_VALUE); | |
6747 | } | |
6748 | else | |
6749 | ep->flags = EDGE_TRUE_VALUE; | |
6750 | find_edge (cont_bb, fin_bb)->flags | |
6751 | = ep ? EDGE_FALSE_VALUE : EDGE_FALLTHRU; | |
6752 | } | |
6753 | ||
6754 | set_immediate_dominator (CDI_DOMINATORS, body_bb, | |
6755 | recompute_dominator (CDI_DOMINATORS, body_bb)); | |
6756 | if (!broken_loop) | |
6757 | set_immediate_dominator (CDI_DOMINATORS, fin_bb, | |
6758 | recompute_dominator (CDI_DOMINATORS, fin_bb)); | |
6759 | ||
6760 | if (!broken_loop && !gimple_omp_for_combined_p (fd->for_stmt)) | |
6761 | { | |
99b1c316 | 6762 | class loop *loop = alloc_loop (); |
629b3d75 MJ |
6763 | loop->header = body_bb; |
6764 | if (collapse_bb == NULL) | |
6765 | loop->latch = cont_bb; | |
6766 | add_loop (loop, body_bb->loop_father); | |
6767 | } | |
6768 | } | |
6769 | ||
6770 | /* A subroutine of expand_omp_for. Generate code for an OpenACC | |
6771 | partitioned loop. The lowering here is abstracted, in that the | |
6772 | loop parameters are passed through internal functions, which are | |
6773 | further lowered by oacc_device_lower, once we get to the target | |
6774 | compiler. The loop is of the form: | |
6775 | ||
6776 | for (V = B; V LTGT E; V += S) {BODY} | |
6777 | ||
6778 | where LTGT is < or >. We may have a specified chunking size, CHUNKING | |
6779 | (constant 0 for no chunking) and we will have a GWV partitioning | |
6780 | mask, specifying dimensions over which the loop is to be | |
02889d23 CLT |
6781 | partitioned (see note below). We generate code that looks like |
6782 | (this ignores tiling): | |
629b3d75 MJ |
6783 | |
6784 | <entry_bb> [incoming FALL->body, BRANCH->exit] | |
6785 | typedef signedintify (typeof (V)) T; // underlying signed integral type | |
6786 | T range = E - B; | |
6787 | T chunk_no = 0; | |
6788 | T DIR = LTGT == '<' ? +1 : -1; | |
6789 | T chunk_max = GOACC_LOOP_CHUNK (dir, range, S, CHUNK_SIZE, GWV); | |
6790 | T step = GOACC_LOOP_STEP (dir, range, S, CHUNK_SIZE, GWV); | |
6791 | ||
6792 | <head_bb> [created by splitting end of entry_bb] | |
6793 | T offset = GOACC_LOOP_OFFSET (dir, range, S, CHUNK_SIZE, GWV, chunk_no); | |
6794 | T bound = GOACC_LOOP_BOUND (dir, range, S, CHUNK_SIZE, GWV, offset); | |
6795 | if (!(offset LTGT bound)) goto bottom_bb; | |
6796 | ||
6797 | <body_bb> [incoming] | |
6798 | V = B + offset; | |
6799 | {BODY} | |
6800 | ||
6801 | <cont_bb> [incoming, may == body_bb FALL->exit_bb, BRANCH->body_bb] | |
6802 | offset += step; | |
6803 | if (offset LTGT bound) goto body_bb; [*] | |
6804 | ||
6805 | <bottom_bb> [created by splitting start of exit_bb] insert BRANCH->head_bb | |
6806 | chunk_no++; | |
6807 | if (chunk < chunk_max) goto head_bb; | |
6808 | ||
6809 | <exit_bb> [incoming] | |
6810 | V = B + ((range -/+ 1) / S +/- 1) * S [*] | |
6811 | ||
02889d23 | 6812 | [*] Needed if V live at end of loop. */ |
629b3d75 MJ |
6813 | |
6814 | static void | |
6815 | expand_oacc_for (struct omp_region *region, struct omp_for_data *fd) | |
6816 | { | |
6817 | tree v = fd->loop.v; | |
6818 | enum tree_code cond_code = fd->loop.cond_code; | |
6819 | enum tree_code plus_code = PLUS_EXPR; | |
6820 | ||
6821 | tree chunk_size = integer_minus_one_node; | |
6822 | tree gwv = integer_zero_node; | |
6823 | tree iter_type = TREE_TYPE (v); | |
6824 | tree diff_type = iter_type; | |
6825 | tree plus_type = iter_type; | |
6826 | struct oacc_collapse *counts = NULL; | |
6827 | ||
6828 | gcc_checking_assert (gimple_omp_for_kind (fd->for_stmt) | |
6829 | == GF_OMP_FOR_KIND_OACC_LOOP); | |
6830 | gcc_assert (!gimple_omp_for_combined_into_p (fd->for_stmt)); | |
6831 | gcc_assert (cond_code == LT_EXPR || cond_code == GT_EXPR); | |
6832 | ||
6833 | if (POINTER_TYPE_P (iter_type)) | |
6834 | { | |
6835 | plus_code = POINTER_PLUS_EXPR; | |
6836 | plus_type = sizetype; | |
6837 | } | |
6838 | if (POINTER_TYPE_P (diff_type) || TYPE_UNSIGNED (diff_type)) | |
6839 | diff_type = signed_type_for (diff_type); | |
f4c222c0 TV |
6840 | if (TYPE_PRECISION (diff_type) < TYPE_PRECISION (integer_type_node)) |
6841 | diff_type = integer_type_node; | |
629b3d75 MJ |
6842 | |
6843 | basic_block entry_bb = region->entry; /* BB ending in OMP_FOR */ | |
6844 | basic_block exit_bb = region->exit; /* BB ending in OMP_RETURN */ | |
6845 | basic_block cont_bb = region->cont; /* BB ending in OMP_CONTINUE */ | |
6846 | basic_block bottom_bb = NULL; | |
6847 | ||
9c3da8cc JJ |
6848 | /* entry_bb has two successors; the branch edge is to the exit |
6849 | block, fallthrough edge to body. */ | |
629b3d75 MJ |
6850 | gcc_assert (EDGE_COUNT (entry_bb->succs) == 2 |
6851 | && BRANCH_EDGE (entry_bb)->dest == exit_bb); | |
6852 | ||
6853 | /* If cont_bb non-NULL, it has 2 successors. The branch successor is | |
6854 | body_bb, or to a block whose only successor is the body_bb. Its | |
6855 | fallthrough successor is the final block (same as the branch | |
6856 | successor of the entry_bb). */ | |
6857 | if (cont_bb) | |
6858 | { | |
6859 | basic_block body_bb = FALLTHRU_EDGE (entry_bb)->dest; | |
6860 | basic_block bed = BRANCH_EDGE (cont_bb)->dest; | |
6861 | ||
6862 | gcc_assert (FALLTHRU_EDGE (cont_bb)->dest == exit_bb); | |
6863 | gcc_assert (bed == body_bb || single_succ_edge (bed)->dest == body_bb); | |
6864 | } | |
6865 | else | |
6866 | gcc_assert (!gimple_in_ssa_p (cfun)); | |
6867 | ||
6868 | /* The exit block only has entry_bb and cont_bb as predecessors. */ | |
6869 | gcc_assert (EDGE_COUNT (exit_bb->preds) == 1 + (cont_bb != NULL)); | |
6870 | ||
6871 | tree chunk_no; | |
6872 | tree chunk_max = NULL_TREE; | |
6873 | tree bound, offset; | |
6874 | tree step = create_tmp_var (diff_type, ".step"); | |
6875 | bool up = cond_code == LT_EXPR; | |
6876 | tree dir = build_int_cst (diff_type, up ? +1 : -1); | |
02889d23 | 6877 | bool chunking = !gimple_in_ssa_p (cfun); |
629b3d75 MJ |
6878 | bool negating; |
6879 | ||
02889d23 CLT |
6880 | /* Tiling vars. */ |
6881 | tree tile_size = NULL_TREE; | |
6882 | tree element_s = NULL_TREE; | |
6883 | tree e_bound = NULL_TREE, e_offset = NULL_TREE, e_step = NULL_TREE; | |
6884 | basic_block elem_body_bb = NULL; | |
6885 | basic_block elem_cont_bb = NULL; | |
6886 | ||
629b3d75 MJ |
6887 | /* SSA instances. */ |
6888 | tree offset_incr = NULL_TREE; | |
6889 | tree offset_init = NULL_TREE; | |
6890 | ||
6891 | gimple_stmt_iterator gsi; | |
6892 | gassign *ass; | |
6893 | gcall *call; | |
6894 | gimple *stmt; | |
6895 | tree expr; | |
6896 | location_t loc; | |
6897 | edge split, be, fte; | |
6898 | ||
6899 | /* Split the end of entry_bb to create head_bb. */ | |
6900 | split = split_block (entry_bb, last_stmt (entry_bb)); | |
6901 | basic_block head_bb = split->dest; | |
6902 | entry_bb = split->src; | |
6903 | ||
6904 | /* Chunk setup goes at end of entry_bb, replacing the omp_for. */ | |
65f4b875 | 6905 | gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
6906 | gomp_for *for_stmt = as_a <gomp_for *> (gsi_stmt (gsi)); |
6907 | loc = gimple_location (for_stmt); | |
6908 | ||
6909 | if (gimple_in_ssa_p (cfun)) | |
6910 | { | |
6911 | offset_init = gimple_omp_for_index (for_stmt, 0); | |
6912 | gcc_assert (integer_zerop (fd->loop.n1)); | |
6913 | /* The SSA parallelizer does gang parallelism. */ | |
6914 | gwv = build_int_cst (integer_type_node, GOMP_DIM_MASK (GOMP_DIM_GANG)); | |
6915 | } | |
6916 | ||
02889d23 | 6917 | if (fd->collapse > 1 || fd->tiling) |
629b3d75 | 6918 | { |
02889d23 | 6919 | gcc_assert (!gimple_in_ssa_p (cfun) && up); |
629b3d75 MJ |
6920 | counts = XALLOCAVEC (struct oacc_collapse, fd->collapse); |
6921 | tree total = expand_oacc_collapse_init (fd, &gsi, counts, | |
02889d23 | 6922 | TREE_TYPE (fd->loop.n2), loc); |
629b3d75 MJ |
6923 | |
6924 | if (SSA_VAR_P (fd->loop.n2)) | |
6925 | { | |
6926 | total = force_gimple_operand_gsi (&gsi, total, false, NULL_TREE, | |
6927 | true, GSI_SAME_STMT); | |
6928 | ass = gimple_build_assign (fd->loop.n2, total); | |
6929 | gsi_insert_before (&gsi, ass, GSI_SAME_STMT); | |
6930 | } | |
629b3d75 MJ |
6931 | } |
6932 | ||
6933 | tree b = fd->loop.n1; | |
6934 | tree e = fd->loop.n2; | |
6935 | tree s = fd->loop.step; | |
6936 | ||
6937 | b = force_gimple_operand_gsi (&gsi, b, true, NULL_TREE, true, GSI_SAME_STMT); | |
6938 | e = force_gimple_operand_gsi (&gsi, e, true, NULL_TREE, true, GSI_SAME_STMT); | |
6939 | ||
01914336 | 6940 | /* Convert the step, avoiding possible unsigned->signed overflow. */ |
629b3d75 MJ |
6941 | negating = !up && TYPE_UNSIGNED (TREE_TYPE (s)); |
6942 | if (negating) | |
6943 | s = fold_build1 (NEGATE_EXPR, TREE_TYPE (s), s); | |
6944 | s = fold_convert (diff_type, s); | |
6945 | if (negating) | |
6946 | s = fold_build1 (NEGATE_EXPR, diff_type, s); | |
6947 | s = force_gimple_operand_gsi (&gsi, s, true, NULL_TREE, true, GSI_SAME_STMT); | |
6948 | ||
6949 | if (!chunking) | |
6950 | chunk_size = integer_zero_node; | |
6951 | expr = fold_convert (diff_type, chunk_size); | |
6952 | chunk_size = force_gimple_operand_gsi (&gsi, expr, true, | |
6953 | NULL_TREE, true, GSI_SAME_STMT); | |
02889d23 CLT |
6954 | |
6955 | if (fd->tiling) | |
6956 | { | |
6957 | /* Determine the tile size and element step, | |
6958 | modify the outer loop step size. */ | |
6959 | tile_size = create_tmp_var (diff_type, ".tile_size"); | |
6960 | expr = build_int_cst (diff_type, 1); | |
6961 | for (int ix = 0; ix < fd->collapse; ix++) | |
6962 | expr = fold_build2 (MULT_EXPR, diff_type, counts[ix].tile, expr); | |
6963 | expr = force_gimple_operand_gsi (&gsi, expr, true, | |
6964 | NULL_TREE, true, GSI_SAME_STMT); | |
6965 | ass = gimple_build_assign (tile_size, expr); | |
6966 | gsi_insert_before (&gsi, ass, GSI_SAME_STMT); | |
6967 | ||
6968 | element_s = create_tmp_var (diff_type, ".element_s"); | |
6969 | ass = gimple_build_assign (element_s, s); | |
6970 | gsi_insert_before (&gsi, ass, GSI_SAME_STMT); | |
6971 | ||
6972 | expr = fold_build2 (MULT_EXPR, diff_type, s, tile_size); | |
6973 | s = force_gimple_operand_gsi (&gsi, expr, true, | |
6974 | NULL_TREE, true, GSI_SAME_STMT); | |
6975 | } | |
6976 | ||
01914336 | 6977 | /* Determine the range, avoiding possible unsigned->signed overflow. */ |
629b3d75 MJ |
6978 | negating = !up && TYPE_UNSIGNED (iter_type); |
6979 | expr = fold_build2 (MINUS_EXPR, plus_type, | |
6980 | fold_convert (plus_type, negating ? b : e), | |
6981 | fold_convert (plus_type, negating ? e : b)); | |
6982 | expr = fold_convert (diff_type, expr); | |
6983 | if (negating) | |
6984 | expr = fold_build1 (NEGATE_EXPR, diff_type, expr); | |
6985 | tree range = force_gimple_operand_gsi (&gsi, expr, true, | |
6986 | NULL_TREE, true, GSI_SAME_STMT); | |
6987 | ||
6988 | chunk_no = build_int_cst (diff_type, 0); | |
6989 | if (chunking) | |
6990 | { | |
6991 | gcc_assert (!gimple_in_ssa_p (cfun)); | |
6992 | ||
6993 | expr = chunk_no; | |
6994 | chunk_max = create_tmp_var (diff_type, ".chunk_max"); | |
6995 | chunk_no = create_tmp_var (diff_type, ".chunk_no"); | |
6996 | ||
6997 | ass = gimple_build_assign (chunk_no, expr); | |
6998 | gsi_insert_before (&gsi, ass, GSI_SAME_STMT); | |
6999 | ||
7000 | call = gimple_build_call_internal (IFN_GOACC_LOOP, 6, | |
7001 | build_int_cst (integer_type_node, | |
7002 | IFN_GOACC_LOOP_CHUNKS), | |
7003 | dir, range, s, chunk_size, gwv); | |
7004 | gimple_call_set_lhs (call, chunk_max); | |
7005 | gimple_set_location (call, loc); | |
7006 | gsi_insert_before (&gsi, call, GSI_SAME_STMT); | |
7007 | } | |
7008 | else | |
7009 | chunk_size = chunk_no; | |
7010 | ||
7011 | call = gimple_build_call_internal (IFN_GOACC_LOOP, 6, | |
7012 | build_int_cst (integer_type_node, | |
7013 | IFN_GOACC_LOOP_STEP), | |
7014 | dir, range, s, chunk_size, gwv); | |
7015 | gimple_call_set_lhs (call, step); | |
7016 | gimple_set_location (call, loc); | |
7017 | gsi_insert_before (&gsi, call, GSI_SAME_STMT); | |
7018 | ||
7019 | /* Remove the GIMPLE_OMP_FOR. */ | |
7020 | gsi_remove (&gsi, true); | |
7021 | ||
01914336 | 7022 | /* Fixup edges from head_bb. */ |
629b3d75 MJ |
7023 | be = BRANCH_EDGE (head_bb); |
7024 | fte = FALLTHRU_EDGE (head_bb); | |
7025 | be->flags |= EDGE_FALSE_VALUE; | |
7026 | fte->flags ^= EDGE_FALLTHRU | EDGE_TRUE_VALUE; | |
7027 | ||
7028 | basic_block body_bb = fte->dest; | |
7029 | ||
7030 | if (gimple_in_ssa_p (cfun)) | |
7031 | { | |
65f4b875 | 7032 | gsi = gsi_last_nondebug_bb (cont_bb); |
629b3d75 MJ |
7033 | gomp_continue *cont_stmt = as_a <gomp_continue *> (gsi_stmt (gsi)); |
7034 | ||
7035 | offset = gimple_omp_continue_control_use (cont_stmt); | |
7036 | offset_incr = gimple_omp_continue_control_def (cont_stmt); | |
7037 | } | |
7038 | else | |
7039 | { | |
7040 | offset = create_tmp_var (diff_type, ".offset"); | |
7041 | offset_init = offset_incr = offset; | |
7042 | } | |
7043 | bound = create_tmp_var (TREE_TYPE (offset), ".bound"); | |
7044 | ||
7045 | /* Loop offset & bound go into head_bb. */ | |
7046 | gsi = gsi_start_bb (head_bb); | |
7047 | ||
7048 | call = gimple_build_call_internal (IFN_GOACC_LOOP, 7, | |
7049 | build_int_cst (integer_type_node, | |
7050 | IFN_GOACC_LOOP_OFFSET), | |
7051 | dir, range, s, | |
7052 | chunk_size, gwv, chunk_no); | |
7053 | gimple_call_set_lhs (call, offset_init); | |
7054 | gimple_set_location (call, loc); | |
7055 | gsi_insert_after (&gsi, call, GSI_CONTINUE_LINKING); | |
7056 | ||
7057 | call = gimple_build_call_internal (IFN_GOACC_LOOP, 7, | |
7058 | build_int_cst (integer_type_node, | |
7059 | IFN_GOACC_LOOP_BOUND), | |
7060 | dir, range, s, | |
7061 | chunk_size, gwv, offset_init); | |
7062 | gimple_call_set_lhs (call, bound); | |
7063 | gimple_set_location (call, loc); | |
7064 | gsi_insert_after (&gsi, call, GSI_CONTINUE_LINKING); | |
7065 | ||
7066 | expr = build2 (cond_code, boolean_type_node, offset_init, bound); | |
7067 | gsi_insert_after (&gsi, gimple_build_cond_empty (expr), | |
7068 | GSI_CONTINUE_LINKING); | |
7069 | ||
7070 | /* V assignment goes into body_bb. */ | |
7071 | if (!gimple_in_ssa_p (cfun)) | |
7072 | { | |
7073 | gsi = gsi_start_bb (body_bb); | |
7074 | ||
7075 | expr = build2 (plus_code, iter_type, b, | |
7076 | fold_convert (plus_type, offset)); | |
7077 | expr = force_gimple_operand_gsi (&gsi, expr, false, NULL_TREE, | |
7078 | true, GSI_SAME_STMT); | |
7079 | ass = gimple_build_assign (v, expr); | |
7080 | gsi_insert_before (&gsi, ass, GSI_SAME_STMT); | |
02889d23 CLT |
7081 | |
7082 | if (fd->collapse > 1 || fd->tiling) | |
7083 | expand_oacc_collapse_vars (fd, false, &gsi, counts, v); | |
7084 | ||
7085 | if (fd->tiling) | |
7086 | { | |
7087 | /* Determine the range of the element loop -- usually simply | |
7088 | the tile_size, but could be smaller if the final | |
7089 | iteration of the outer loop is a partial tile. */ | |
7090 | tree e_range = create_tmp_var (diff_type, ".e_range"); | |
7091 | ||
7092 | expr = build2 (MIN_EXPR, diff_type, | |
7093 | build2 (MINUS_EXPR, diff_type, bound, offset), | |
7094 | build2 (MULT_EXPR, diff_type, tile_size, | |
7095 | element_s)); | |
7096 | expr = force_gimple_operand_gsi (&gsi, expr, false, NULL_TREE, | |
7097 | true, GSI_SAME_STMT); | |
7098 | ass = gimple_build_assign (e_range, expr); | |
7099 | gsi_insert_before (&gsi, ass, GSI_SAME_STMT); | |
7100 | ||
7101 | /* Determine bound, offset & step of inner loop. */ | |
7102 | e_bound = create_tmp_var (diff_type, ".e_bound"); | |
7103 | e_offset = create_tmp_var (diff_type, ".e_offset"); | |
7104 | e_step = create_tmp_var (diff_type, ".e_step"); | |
7105 | ||
7106 | /* Mark these as element loops. */ | |
7107 | tree t, e_gwv = integer_minus_one_node; | |
7108 | tree chunk = build_int_cst (diff_type, 0); /* Never chunked. */ | |
7109 | ||
7110 | t = build_int_cst (integer_type_node, IFN_GOACC_LOOP_OFFSET); | |
7111 | call = gimple_build_call_internal (IFN_GOACC_LOOP, 7, t, dir, e_range, | |
7112 | element_s, chunk, e_gwv, chunk); | |
7113 | gimple_call_set_lhs (call, e_offset); | |
7114 | gimple_set_location (call, loc); | |
7115 | gsi_insert_before (&gsi, call, GSI_SAME_STMT); | |
7116 | ||
7117 | t = build_int_cst (integer_type_node, IFN_GOACC_LOOP_BOUND); | |
7118 | call = gimple_build_call_internal (IFN_GOACC_LOOP, 7, t, dir, e_range, | |
7119 | element_s, chunk, e_gwv, e_offset); | |
7120 | gimple_call_set_lhs (call, e_bound); | |
7121 | gimple_set_location (call, loc); | |
7122 | gsi_insert_before (&gsi, call, GSI_SAME_STMT); | |
7123 | ||
7124 | t = build_int_cst (integer_type_node, IFN_GOACC_LOOP_STEP); | |
7125 | call = gimple_build_call_internal (IFN_GOACC_LOOP, 6, t, dir, e_range, | |
7126 | element_s, chunk, e_gwv); | |
7127 | gimple_call_set_lhs (call, e_step); | |
7128 | gimple_set_location (call, loc); | |
7129 | gsi_insert_before (&gsi, call, GSI_SAME_STMT); | |
7130 | ||
7131 | /* Add test and split block. */ | |
7132 | expr = build2 (cond_code, boolean_type_node, e_offset, e_bound); | |
7133 | stmt = gimple_build_cond_empty (expr); | |
7134 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
7135 | split = split_block (body_bb, stmt); | |
7136 | elem_body_bb = split->dest; | |
7137 | if (cont_bb == body_bb) | |
7138 | cont_bb = elem_body_bb; | |
7139 | body_bb = split->src; | |
7140 | ||
7141 | split->flags ^= EDGE_FALLTHRU | EDGE_TRUE_VALUE; | |
7142 | ||
05e0af43 CP |
7143 | /* Add a dummy exit for the tiled block when cont_bb is missing. */ |
7144 | if (cont_bb == NULL) | |
7145 | { | |
7146 | edge e = make_edge (body_bb, exit_bb, EDGE_FALSE_VALUE); | |
7147 | e->probability = profile_probability::even (); | |
7148 | split->probability = profile_probability::even (); | |
7149 | } | |
7150 | ||
02889d23 CLT |
7151 | /* Initialize the user's loop vars. */ |
7152 | gsi = gsi_start_bb (elem_body_bb); | |
7153 | expand_oacc_collapse_vars (fd, true, &gsi, counts, e_offset); | |
7154 | } | |
629b3d75 MJ |
7155 | } |
7156 | ||
7157 | /* Loop increment goes into cont_bb. If this is not a loop, we | |
7158 | will have spawned threads as if it was, and each one will | |
7159 | execute one iteration. The specification is not explicit about | |
7160 | whether such constructs are ill-formed or not, and they can | |
7161 | occur, especially when noreturn routines are involved. */ | |
7162 | if (cont_bb) | |
7163 | { | |
65f4b875 | 7164 | gsi = gsi_last_nondebug_bb (cont_bb); |
629b3d75 MJ |
7165 | gomp_continue *cont_stmt = as_a <gomp_continue *> (gsi_stmt (gsi)); |
7166 | loc = gimple_location (cont_stmt); | |
7167 | ||
02889d23 CLT |
7168 | if (fd->tiling) |
7169 | { | |
7170 | /* Insert element loop increment and test. */ | |
7171 | expr = build2 (PLUS_EXPR, diff_type, e_offset, e_step); | |
7172 | expr = force_gimple_operand_gsi (&gsi, expr, false, NULL_TREE, | |
7173 | true, GSI_SAME_STMT); | |
7174 | ass = gimple_build_assign (e_offset, expr); | |
7175 | gsi_insert_before (&gsi, ass, GSI_SAME_STMT); | |
7176 | expr = build2 (cond_code, boolean_type_node, e_offset, e_bound); | |
7177 | ||
7178 | stmt = gimple_build_cond_empty (expr); | |
7179 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
7180 | split = split_block (cont_bb, stmt); | |
7181 | elem_cont_bb = split->src; | |
7182 | cont_bb = split->dest; | |
7183 | ||
7184 | split->flags ^= EDGE_FALLTHRU | EDGE_FALSE_VALUE; | |
9fba2943 TV |
7185 | split->probability = profile_probability::unlikely ().guessed (); |
7186 | edge latch_edge | |
7187 | = make_edge (elem_cont_bb, elem_body_bb, EDGE_TRUE_VALUE); | |
7188 | latch_edge->probability = profile_probability::likely ().guessed (); | |
7189 | ||
7190 | edge skip_edge = make_edge (body_bb, cont_bb, EDGE_FALSE_VALUE); | |
7191 | skip_edge->probability = profile_probability::unlikely ().guessed (); | |
7192 | edge loop_entry_edge = EDGE_SUCC (body_bb, 1 - skip_edge->dest_idx); | |
7193 | loop_entry_edge->probability | |
7194 | = profile_probability::likely ().guessed (); | |
02889d23 CLT |
7195 | |
7196 | gsi = gsi_for_stmt (cont_stmt); | |
7197 | } | |
7198 | ||
629b3d75 MJ |
7199 | /* Increment offset. */ |
7200 | if (gimple_in_ssa_p (cfun)) | |
02889d23 CLT |
7201 | expr = build2 (plus_code, iter_type, offset, |
7202 | fold_convert (plus_type, step)); | |
629b3d75 MJ |
7203 | else |
7204 | expr = build2 (PLUS_EXPR, diff_type, offset, step); | |
7205 | expr = force_gimple_operand_gsi (&gsi, expr, false, NULL_TREE, | |
7206 | true, GSI_SAME_STMT); | |
7207 | ass = gimple_build_assign (offset_incr, expr); | |
7208 | gsi_insert_before (&gsi, ass, GSI_SAME_STMT); | |
7209 | expr = build2 (cond_code, boolean_type_node, offset_incr, bound); | |
7210 | gsi_insert_before (&gsi, gimple_build_cond_empty (expr), GSI_SAME_STMT); | |
7211 | ||
7212 | /* Remove the GIMPLE_OMP_CONTINUE. */ | |
7213 | gsi_remove (&gsi, true); | |
7214 | ||
01914336 | 7215 | /* Fixup edges from cont_bb. */ |
629b3d75 MJ |
7216 | be = BRANCH_EDGE (cont_bb); |
7217 | fte = FALLTHRU_EDGE (cont_bb); | |
7218 | be->flags |= EDGE_TRUE_VALUE; | |
7219 | fte->flags ^= EDGE_FALLTHRU | EDGE_FALSE_VALUE; | |
7220 | ||
7221 | if (chunking) | |
7222 | { | |
7223 | /* Split the beginning of exit_bb to make bottom_bb. We | |
7224 | need to insert a nop at the start, because splitting is | |
01914336 | 7225 | after a stmt, not before. */ |
629b3d75 MJ |
7226 | gsi = gsi_start_bb (exit_bb); |
7227 | stmt = gimple_build_nop (); | |
7228 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
7229 | split = split_block (exit_bb, stmt); | |
7230 | bottom_bb = split->src; | |
7231 | exit_bb = split->dest; | |
7232 | gsi = gsi_last_bb (bottom_bb); | |
7233 | ||
7234 | /* Chunk increment and test goes into bottom_bb. */ | |
7235 | expr = build2 (PLUS_EXPR, diff_type, chunk_no, | |
7236 | build_int_cst (diff_type, 1)); | |
7237 | ass = gimple_build_assign (chunk_no, expr); | |
7238 | gsi_insert_after (&gsi, ass, GSI_CONTINUE_LINKING); | |
7239 | ||
7240 | /* Chunk test at end of bottom_bb. */ | |
7241 | expr = build2 (LT_EXPR, boolean_type_node, chunk_no, chunk_max); | |
7242 | gsi_insert_after (&gsi, gimple_build_cond_empty (expr), | |
7243 | GSI_CONTINUE_LINKING); | |
7244 | ||
01914336 | 7245 | /* Fixup edges from bottom_bb. */ |
629b3d75 | 7246 | split->flags ^= EDGE_FALLTHRU | EDGE_FALSE_VALUE; |
f38057cc TV |
7247 | split->probability = profile_probability::unlikely ().guessed (); |
7248 | edge latch_edge = make_edge (bottom_bb, head_bb, EDGE_TRUE_VALUE); | |
7249 | latch_edge->probability = profile_probability::likely ().guessed (); | |
629b3d75 MJ |
7250 | } |
7251 | } | |
7252 | ||
65f4b875 | 7253 | gsi = gsi_last_nondebug_bb (exit_bb); |
629b3d75 MJ |
7254 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_RETURN); |
7255 | loc = gimple_location (gsi_stmt (gsi)); | |
7256 | ||
7257 | if (!gimple_in_ssa_p (cfun)) | |
7258 | { | |
7259 | /* Insert the final value of V, in case it is live. This is the | |
7260 | value for the only thread that survives past the join. */ | |
7261 | expr = fold_build2 (MINUS_EXPR, diff_type, range, dir); | |
7262 | expr = fold_build2 (PLUS_EXPR, diff_type, expr, s); | |
7263 | expr = fold_build2 (TRUNC_DIV_EXPR, diff_type, expr, s); | |
7264 | expr = fold_build2 (MULT_EXPR, diff_type, expr, s); | |
7265 | expr = build2 (plus_code, iter_type, b, fold_convert (plus_type, expr)); | |
7266 | expr = force_gimple_operand_gsi (&gsi, expr, false, NULL_TREE, | |
7267 | true, GSI_SAME_STMT); | |
7268 | ass = gimple_build_assign (v, expr); | |
7269 | gsi_insert_before (&gsi, ass, GSI_SAME_STMT); | |
7270 | } | |
7271 | ||
01914336 | 7272 | /* Remove the OMP_RETURN. */ |
629b3d75 MJ |
7273 | gsi_remove (&gsi, true); |
7274 | ||
7275 | if (cont_bb) | |
7276 | { | |
02889d23 | 7277 | /* We now have one, two or three nested loops. Update the loop |
629b3d75 | 7278 | structures. */ |
99b1c316 MS |
7279 | class loop *parent = entry_bb->loop_father; |
7280 | class loop *body = body_bb->loop_father; | |
629b3d75 MJ |
7281 | |
7282 | if (chunking) | |
7283 | { | |
99b1c316 | 7284 | class loop *chunk_loop = alloc_loop (); |
629b3d75 MJ |
7285 | chunk_loop->header = head_bb; |
7286 | chunk_loop->latch = bottom_bb; | |
7287 | add_loop (chunk_loop, parent); | |
7288 | parent = chunk_loop; | |
7289 | } | |
7290 | else if (parent != body) | |
7291 | { | |
7292 | gcc_assert (body->header == body_bb); | |
7293 | gcc_assert (body->latch == cont_bb | |
7294 | || single_pred (body->latch) == cont_bb); | |
7295 | parent = NULL; | |
7296 | } | |
7297 | ||
7298 | if (parent) | |
7299 | { | |
99b1c316 | 7300 | class loop *body_loop = alloc_loop (); |
629b3d75 MJ |
7301 | body_loop->header = body_bb; |
7302 | body_loop->latch = cont_bb; | |
7303 | add_loop (body_loop, parent); | |
02889d23 CLT |
7304 | |
7305 | if (fd->tiling) | |
7306 | { | |
7307 | /* Insert tiling's element loop. */ | |
99b1c316 | 7308 | class loop *inner_loop = alloc_loop (); |
02889d23 CLT |
7309 | inner_loop->header = elem_body_bb; |
7310 | inner_loop->latch = elem_cont_bb; | |
7311 | add_loop (inner_loop, body_loop); | |
7312 | } | |
629b3d75 MJ |
7313 | } |
7314 | } | |
7315 | } | |
7316 | ||
7317 | /* Expand the OMP loop defined by REGION. */ | |
7318 | ||
7319 | static void | |
7320 | expand_omp_for (struct omp_region *region, gimple *inner_stmt) | |
7321 | { | |
7322 | struct omp_for_data fd; | |
7323 | struct omp_for_data_loop *loops; | |
7324 | ||
9d50112a JJ |
7325 | loops = XALLOCAVEC (struct omp_for_data_loop, |
7326 | gimple_omp_for_collapse (last_stmt (region->entry))); | |
629b3d75 MJ |
7327 | omp_extract_for_data (as_a <gomp_for *> (last_stmt (region->entry)), |
7328 | &fd, loops); | |
7329 | region->sched_kind = fd.sched_kind; | |
7330 | region->sched_modifiers = fd.sched_modifiers; | |
0b887b75 | 7331 | region->has_lastprivate_conditional = fd.lastprivate_conditional != 0; |
9d50112a JJ |
7332 | if (fd.non_rect && !gimple_omp_for_combined_into_p (fd.for_stmt)) |
7333 | { | |
7334 | for (int i = fd.first_nonrect; i <= fd.last_nonrect; i++) | |
7335 | if ((loops[i].m1 || loops[i].m2) | |
7336 | && (loops[i].m1 == NULL_TREE | |
7337 | || TREE_CODE (loops[i].m1) == INTEGER_CST) | |
7338 | && (loops[i].m2 == NULL_TREE | |
7339 | || TREE_CODE (loops[i].m2) == INTEGER_CST) | |
7340 | && TREE_CODE (loops[i].step) == INTEGER_CST | |
7341 | && TREE_CODE (loops[i - loops[i].outer].step) == INTEGER_CST) | |
7342 | { | |
7343 | tree t; | |
7344 | tree itype = TREE_TYPE (loops[i].v); | |
7345 | if (loops[i].m1 && loops[i].m2) | |
7346 | t = fold_build2 (MINUS_EXPR, itype, loops[i].m2, loops[i].m1); | |
7347 | else if (loops[i].m1) | |
7348 | t = fold_build1 (NEGATE_EXPR, itype, loops[i].m1); | |
7349 | else | |
7350 | t = loops[i].m2; | |
7351 | t = fold_build2 (MULT_EXPR, itype, t, | |
7352 | fold_convert (itype, | |
7353 | loops[i - loops[i].outer].step)); | |
7354 | if (TYPE_UNSIGNED (itype) && loops[i].cond_code == GT_EXPR) | |
7355 | t = fold_build2 (TRUNC_MOD_EXPR, itype, | |
7356 | fold_build1 (NEGATE_EXPR, itype, t), | |
7357 | fold_build1 (NEGATE_EXPR, itype, | |
7358 | fold_convert (itype, | |
7359 | loops[i].step))); | |
7360 | else | |
7361 | t = fold_build2 (TRUNC_MOD_EXPR, itype, t, | |
7362 | fold_convert (itype, loops[i].step)); | |
7363 | if (integer_nonzerop (t)) | |
7364 | error_at (gimple_location (fd.for_stmt), | |
7365 | "invalid OpenMP non-rectangular loop step; " | |
7366 | "%<(%E - %E) * %E%> is not a multiple of loop %d " | |
7367 | "step %qE", | |
7368 | loops[i].m2 ? loops[i].m2 : integer_zero_node, | |
7369 | loops[i].m1 ? loops[i].m1 : integer_zero_node, | |
7370 | loops[i - loops[i].outer].step, i + 1, | |
7371 | loops[i].step); | |
7372 | } | |
7373 | } | |
629b3d75 MJ |
7374 | |
7375 | gcc_assert (EDGE_COUNT (region->entry->succs) == 2); | |
7376 | BRANCH_EDGE (region->entry)->flags &= ~EDGE_ABNORMAL; | |
7377 | FALLTHRU_EDGE (region->entry)->flags &= ~EDGE_ABNORMAL; | |
7378 | if (region->cont) | |
7379 | { | |
7380 | gcc_assert (EDGE_COUNT (region->cont->succs) == 2); | |
7381 | BRANCH_EDGE (region->cont)->flags &= ~EDGE_ABNORMAL; | |
7382 | FALLTHRU_EDGE (region->cont)->flags &= ~EDGE_ABNORMAL; | |
7383 | } | |
7384 | else | |
7385 | /* If there isn't a continue then this is a degerate case where | |
7386 | the introduction of abnormal edges during lowering will prevent | |
7387 | original loops from being detected. Fix that up. */ | |
7388 | loops_state_set (LOOPS_NEED_FIXUP); | |
7389 | ||
dfa6e5b4 | 7390 | if (gimple_omp_for_kind (fd.for_stmt) == GF_OMP_FOR_KIND_SIMD) |
1160ec9a JJ |
7391 | { |
7392 | if (fd.non_rect) | |
7393 | sorry_at (gimple_location (fd.for_stmt), | |
7394 | "non-rectangular %<simd%> not supported yet"); | |
7395 | expand_omp_simd (region, &fd); | |
7396 | } | |
629b3d75 MJ |
7397 | else if (gimple_omp_for_kind (fd.for_stmt) == GF_OMP_FOR_KIND_OACC_LOOP) |
7398 | { | |
1160ec9a | 7399 | gcc_assert (!inner_stmt && !fd.non_rect); |
629b3d75 MJ |
7400 | expand_oacc_for (region, &fd); |
7401 | } | |
7402 | else if (gimple_omp_for_kind (fd.for_stmt) == GF_OMP_FOR_KIND_TASKLOOP) | |
7403 | { | |
1160ec9a JJ |
7404 | if (fd.non_rect) |
7405 | sorry_at (gimple_location (fd.for_stmt), | |
7406 | "non-rectangular %<taskloop%> not supported yet"); | |
629b3d75 MJ |
7407 | if (gimple_omp_for_combined_into_p (fd.for_stmt)) |
7408 | expand_omp_taskloop_for_inner (region, &fd, inner_stmt); | |
7409 | else | |
7410 | expand_omp_taskloop_for_outer (region, &fd, inner_stmt); | |
7411 | } | |
7412 | else if (fd.sched_kind == OMP_CLAUSE_SCHEDULE_STATIC | |
7413 | && !fd.have_ordered) | |
7414 | { | |
aed3ab25 JJ |
7415 | if (fd.non_rect |
7416 | && (gimple_omp_for_combined_into_p (fd.for_stmt) | |
7417 | || gimple_omp_for_combined_p (fd.for_stmt))) | |
1160ec9a JJ |
7418 | sorry_at (gimple_location (fd.for_stmt), |
7419 | "non-rectangular OpenMP loops not supported yet"); | |
629b3d75 MJ |
7420 | if (fd.chunk_size == NULL) |
7421 | expand_omp_for_static_nochunk (region, &fd, inner_stmt); | |
7422 | else | |
7423 | expand_omp_for_static_chunk (region, &fd, inner_stmt); | |
7424 | } | |
7425 | else | |
7426 | { | |
7427 | int fn_index, start_ix, next_ix; | |
28567c40 JJ |
7428 | unsigned HOST_WIDE_INT sched = 0; |
7429 | tree sched_arg = NULL_TREE; | |
629b3d75 MJ |
7430 | |
7431 | gcc_assert (gimple_omp_for_kind (fd.for_stmt) | |
1160ec9a | 7432 | == GF_OMP_FOR_KIND_FOR && !fd.non_rect); |
629b3d75 MJ |
7433 | if (fd.chunk_size == NULL |
7434 | && fd.sched_kind == OMP_CLAUSE_SCHEDULE_STATIC) | |
7435 | fd.chunk_size = integer_zero_node; | |
629b3d75 MJ |
7436 | switch (fd.sched_kind) |
7437 | { | |
7438 | case OMP_CLAUSE_SCHEDULE_RUNTIME: | |
0b887b75 JJ |
7439 | if ((fd.sched_modifiers & OMP_CLAUSE_SCHEDULE_NONMONOTONIC) != 0 |
7440 | && fd.lastprivate_conditional == 0) | |
28567c40 JJ |
7441 | { |
7442 | gcc_assert (!fd.have_ordered); | |
7443 | fn_index = 6; | |
7444 | sched = 4; | |
7445 | } | |
7446 | else if ((fd.sched_modifiers & OMP_CLAUSE_SCHEDULE_MONOTONIC) == 0 | |
0b887b75 JJ |
7447 | && !fd.have_ordered |
7448 | && fd.lastprivate_conditional == 0) | |
28567c40 JJ |
7449 | fn_index = 7; |
7450 | else | |
7451 | { | |
7452 | fn_index = 3; | |
7453 | sched = (HOST_WIDE_INT_1U << 31); | |
7454 | } | |
629b3d75 MJ |
7455 | break; |
7456 | case OMP_CLAUSE_SCHEDULE_DYNAMIC: | |
7457 | case OMP_CLAUSE_SCHEDULE_GUIDED: | |
28567c40 | 7458 | if ((fd.sched_modifiers & OMP_CLAUSE_SCHEDULE_MONOTONIC) == 0 |
0b887b75 JJ |
7459 | && !fd.have_ordered |
7460 | && fd.lastprivate_conditional == 0) | |
629b3d75 MJ |
7461 | { |
7462 | fn_index = 3 + fd.sched_kind; | |
28567c40 | 7463 | sched = (fd.sched_kind == OMP_CLAUSE_SCHEDULE_GUIDED) + 2; |
629b3d75 MJ |
7464 | break; |
7465 | } | |
629b3d75 | 7466 | fn_index = fd.sched_kind; |
28567c40 JJ |
7467 | sched = (fd.sched_kind == OMP_CLAUSE_SCHEDULE_GUIDED) + 2; |
7468 | sched += (HOST_WIDE_INT_1U << 31); | |
629b3d75 | 7469 | break; |
28567c40 JJ |
7470 | case OMP_CLAUSE_SCHEDULE_STATIC: |
7471 | gcc_assert (fd.have_ordered); | |
7472 | fn_index = 0; | |
7473 | sched = (HOST_WIDE_INT_1U << 31) + 1; | |
7474 | break; | |
7475 | default: | |
7476 | gcc_unreachable (); | |
629b3d75 MJ |
7477 | } |
7478 | if (!fd.ordered) | |
28567c40 | 7479 | fn_index += fd.have_ordered * 8; |
629b3d75 MJ |
7480 | if (fd.ordered) |
7481 | start_ix = ((int)BUILT_IN_GOMP_LOOP_DOACROSS_STATIC_START) + fn_index; | |
7482 | else | |
7483 | start_ix = ((int)BUILT_IN_GOMP_LOOP_STATIC_START) + fn_index; | |
7484 | next_ix = ((int)BUILT_IN_GOMP_LOOP_STATIC_NEXT) + fn_index; | |
8221c30b | 7485 | if (fd.have_reductemp || fd.have_pointer_condtemp) |
28567c40 JJ |
7486 | { |
7487 | if (fd.ordered) | |
7488 | start_ix = (int)BUILT_IN_GOMP_LOOP_DOACROSS_START; | |
7489 | else if (fd.have_ordered) | |
7490 | start_ix = (int)BUILT_IN_GOMP_LOOP_ORDERED_START; | |
7491 | else | |
7492 | start_ix = (int)BUILT_IN_GOMP_LOOP_START; | |
7493 | sched_arg = build_int_cstu (long_integer_type_node, sched); | |
7494 | if (!fd.chunk_size) | |
7495 | fd.chunk_size = integer_zero_node; | |
7496 | } | |
629b3d75 MJ |
7497 | if (fd.iter_type == long_long_unsigned_type_node) |
7498 | { | |
7499 | start_ix += ((int)BUILT_IN_GOMP_LOOP_ULL_STATIC_START | |
7500 | - (int)BUILT_IN_GOMP_LOOP_STATIC_START); | |
7501 | next_ix += ((int)BUILT_IN_GOMP_LOOP_ULL_STATIC_NEXT | |
7502 | - (int)BUILT_IN_GOMP_LOOP_STATIC_NEXT); | |
7503 | } | |
7504 | expand_omp_for_generic (region, &fd, (enum built_in_function) start_ix, | |
28567c40 JJ |
7505 | (enum built_in_function) next_ix, sched_arg, |
7506 | inner_stmt); | |
629b3d75 MJ |
7507 | } |
7508 | ||
7509 | if (gimple_in_ssa_p (cfun)) | |
7510 | update_ssa (TODO_update_ssa_only_virtuals); | |
7511 | } | |
7512 | ||
7513 | /* Expand code for an OpenMP sections directive. In pseudo code, we generate | |
7514 | ||
7515 | v = GOMP_sections_start (n); | |
7516 | L0: | |
7517 | switch (v) | |
7518 | { | |
7519 | case 0: | |
7520 | goto L2; | |
7521 | case 1: | |
7522 | section 1; | |
7523 | goto L1; | |
7524 | case 2: | |
7525 | ... | |
7526 | case n: | |
7527 | ... | |
7528 | default: | |
7529 | abort (); | |
7530 | } | |
7531 | L1: | |
7532 | v = GOMP_sections_next (); | |
7533 | goto L0; | |
7534 | L2: | |
7535 | reduction; | |
7536 | ||
7537 | If this is a combined parallel sections, replace the call to | |
7538 | GOMP_sections_start with call to GOMP_sections_next. */ | |
7539 | ||
7540 | static void | |
7541 | expand_omp_sections (struct omp_region *region) | |
7542 | { | |
7543 | tree t, u, vin = NULL, vmain, vnext, l2; | |
7544 | unsigned len; | |
7545 | basic_block entry_bb, l0_bb, l1_bb, l2_bb, default_bb; | |
7546 | gimple_stmt_iterator si, switch_si; | |
7547 | gomp_sections *sections_stmt; | |
7548 | gimple *stmt; | |
7549 | gomp_continue *cont; | |
7550 | edge_iterator ei; | |
7551 | edge e; | |
7552 | struct omp_region *inner; | |
7553 | unsigned i, casei; | |
7554 | bool exit_reachable = region->cont != NULL; | |
7555 | ||
7556 | gcc_assert (region->exit != NULL); | |
7557 | entry_bb = region->entry; | |
7558 | l0_bb = single_succ (entry_bb); | |
7559 | l1_bb = region->cont; | |
7560 | l2_bb = region->exit; | |
7561 | if (single_pred_p (l2_bb) && single_pred (l2_bb) == l0_bb) | |
7562 | l2 = gimple_block_label (l2_bb); | |
7563 | else | |
7564 | { | |
7565 | /* This can happen if there are reductions. */ | |
7566 | len = EDGE_COUNT (l0_bb->succs); | |
7567 | gcc_assert (len > 0); | |
7568 | e = EDGE_SUCC (l0_bb, len - 1); | |
65f4b875 | 7569 | si = gsi_last_nondebug_bb (e->dest); |
629b3d75 MJ |
7570 | l2 = NULL_TREE; |
7571 | if (gsi_end_p (si) | |
01914336 | 7572 | || gimple_code (gsi_stmt (si)) != GIMPLE_OMP_SECTION) |
629b3d75 MJ |
7573 | l2 = gimple_block_label (e->dest); |
7574 | else | |
7575 | FOR_EACH_EDGE (e, ei, l0_bb->succs) | |
7576 | { | |
65f4b875 | 7577 | si = gsi_last_nondebug_bb (e->dest); |
629b3d75 MJ |
7578 | if (gsi_end_p (si) |
7579 | || gimple_code (gsi_stmt (si)) != GIMPLE_OMP_SECTION) | |
7580 | { | |
7581 | l2 = gimple_block_label (e->dest); | |
7582 | break; | |
7583 | } | |
7584 | } | |
7585 | } | |
7586 | if (exit_reachable) | |
7587 | default_bb = create_empty_bb (l1_bb->prev_bb); | |
7588 | else | |
7589 | default_bb = create_empty_bb (l0_bb); | |
7590 | ||
7591 | /* We will build a switch() with enough cases for all the | |
7592 | GIMPLE_OMP_SECTION regions, a '0' case to handle the end of more work | |
7593 | and a default case to abort if something goes wrong. */ | |
7594 | len = EDGE_COUNT (l0_bb->succs); | |
7595 | ||
7596 | /* Use vec::quick_push on label_vec throughout, since we know the size | |
7597 | in advance. */ | |
7598 | auto_vec<tree> label_vec (len); | |
7599 | ||
7600 | /* The call to GOMP_sections_start goes in ENTRY_BB, replacing the | |
7601 | GIMPLE_OMP_SECTIONS statement. */ | |
65f4b875 | 7602 | si = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
7603 | sections_stmt = as_a <gomp_sections *> (gsi_stmt (si)); |
7604 | gcc_assert (gimple_code (sections_stmt) == GIMPLE_OMP_SECTIONS); | |
7605 | vin = gimple_omp_sections_control (sections_stmt); | |
28567c40 JJ |
7606 | tree clauses = gimple_omp_sections_clauses (sections_stmt); |
7607 | tree reductmp = omp_find_clause (clauses, OMP_CLAUSE__REDUCTEMP_); | |
8e7757ba JJ |
7608 | tree condtmp = omp_find_clause (clauses, OMP_CLAUSE__CONDTEMP_); |
7609 | tree cond_var = NULL_TREE; | |
7610 | if (reductmp || condtmp) | |
7611 | { | |
7612 | tree reductions = null_pointer_node, mem = null_pointer_node; | |
7613 | tree memv = NULL_TREE, condtemp = NULL_TREE; | |
7614 | gimple_stmt_iterator gsi = gsi_none (); | |
7615 | gimple *g = NULL; | |
7616 | if (reductmp) | |
7617 | { | |
7618 | reductions = OMP_CLAUSE_DECL (reductmp); | |
7619 | gcc_assert (TREE_CODE (reductions) == SSA_NAME); | |
7620 | g = SSA_NAME_DEF_STMT (reductions); | |
7621 | reductions = gimple_assign_rhs1 (g); | |
7622 | OMP_CLAUSE_DECL (reductmp) = reductions; | |
7623 | gsi = gsi_for_stmt (g); | |
7624 | } | |
7625 | else | |
7626 | gsi = si; | |
7627 | if (condtmp) | |
7628 | { | |
7629 | condtemp = OMP_CLAUSE_DECL (condtmp); | |
7630 | tree c = omp_find_clause (OMP_CLAUSE_CHAIN (condtmp), | |
7631 | OMP_CLAUSE__CONDTEMP_); | |
7632 | cond_var = OMP_CLAUSE_DECL (c); | |
7633 | tree type = TREE_TYPE (condtemp); | |
7634 | memv = create_tmp_var (type); | |
7635 | TREE_ADDRESSABLE (memv) = 1; | |
7636 | unsigned cnt = 0; | |
7637 | for (c = clauses; c; c = OMP_CLAUSE_CHAIN (c)) | |
7638 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LASTPRIVATE | |
7639 | && OMP_CLAUSE_LASTPRIVATE_CONDITIONAL (c)) | |
7640 | ++cnt; | |
7641 | unsigned HOST_WIDE_INT sz | |
7642 | = tree_to_uhwi (TYPE_SIZE_UNIT (TREE_TYPE (type))) * cnt; | |
7643 | expand_omp_build_assign (&gsi, memv, build_int_cst (type, sz), | |
7644 | false); | |
7645 | mem = build_fold_addr_expr (memv); | |
7646 | } | |
28567c40 JJ |
7647 | t = build_int_cst (unsigned_type_node, len - 1); |
7648 | u = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS2_START); | |
8e7757ba | 7649 | stmt = gimple_build_call (u, 3, t, reductions, mem); |
28567c40 JJ |
7650 | gimple_call_set_lhs (stmt, vin); |
7651 | gsi_insert_before (&gsi, stmt, GSI_SAME_STMT); | |
8e7757ba JJ |
7652 | if (condtmp) |
7653 | { | |
7654 | expand_omp_build_assign (&gsi, condtemp, memv, false); | |
7655 | tree t = build2 (PLUS_EXPR, TREE_TYPE (cond_var), | |
7656 | vin, build_one_cst (TREE_TYPE (cond_var))); | |
7657 | expand_omp_build_assign (&gsi, cond_var, t, false); | |
7658 | } | |
7659 | if (reductmp) | |
7660 | { | |
7661 | gsi_remove (&gsi, true); | |
7662 | release_ssa_name (gimple_assign_lhs (g)); | |
7663 | } | |
28567c40 JJ |
7664 | } |
7665 | else if (!is_combined_parallel (region)) | |
629b3d75 MJ |
7666 | { |
7667 | /* If we are not inside a combined parallel+sections region, | |
7668 | call GOMP_sections_start. */ | |
7669 | t = build_int_cst (unsigned_type_node, len - 1); | |
7670 | u = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS_START); | |
7671 | stmt = gimple_build_call (u, 1, t); | |
7672 | } | |
7673 | else | |
7674 | { | |
7675 | /* Otherwise, call GOMP_sections_next. */ | |
7676 | u = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS_NEXT); | |
7677 | stmt = gimple_build_call (u, 0); | |
7678 | } | |
8e7757ba | 7679 | if (!reductmp && !condtmp) |
28567c40 JJ |
7680 | { |
7681 | gimple_call_set_lhs (stmt, vin); | |
7682 | gsi_insert_after (&si, stmt, GSI_SAME_STMT); | |
7683 | } | |
629b3d75 MJ |
7684 | gsi_remove (&si, true); |
7685 | ||
7686 | /* The switch() statement replacing GIMPLE_OMP_SECTIONS_SWITCH goes in | |
7687 | L0_BB. */ | |
65f4b875 | 7688 | switch_si = gsi_last_nondebug_bb (l0_bb); |
629b3d75 MJ |
7689 | gcc_assert (gimple_code (gsi_stmt (switch_si)) == GIMPLE_OMP_SECTIONS_SWITCH); |
7690 | if (exit_reachable) | |
7691 | { | |
7692 | cont = as_a <gomp_continue *> (last_stmt (l1_bb)); | |
7693 | gcc_assert (gimple_code (cont) == GIMPLE_OMP_CONTINUE); | |
7694 | vmain = gimple_omp_continue_control_use (cont); | |
7695 | vnext = gimple_omp_continue_control_def (cont); | |
7696 | } | |
7697 | else | |
7698 | { | |
7699 | vmain = vin; | |
7700 | vnext = NULL_TREE; | |
7701 | } | |
7702 | ||
7703 | t = build_case_label (build_int_cst (unsigned_type_node, 0), NULL, l2); | |
7704 | label_vec.quick_push (t); | |
7705 | i = 1; | |
7706 | ||
7707 | /* Convert each GIMPLE_OMP_SECTION into a CASE_LABEL_EXPR. */ | |
7708 | for (inner = region->inner, casei = 1; | |
7709 | inner; | |
7710 | inner = inner->next, i++, casei++) | |
7711 | { | |
7712 | basic_block s_entry_bb, s_exit_bb; | |
7713 | ||
7714 | /* Skip optional reduction region. */ | |
7715 | if (inner->type == GIMPLE_OMP_ATOMIC_LOAD) | |
7716 | { | |
7717 | --i; | |
7718 | --casei; | |
7719 | continue; | |
7720 | } | |
7721 | ||
7722 | s_entry_bb = inner->entry; | |
7723 | s_exit_bb = inner->exit; | |
7724 | ||
7725 | t = gimple_block_label (s_entry_bb); | |
7726 | u = build_int_cst (unsigned_type_node, casei); | |
7727 | u = build_case_label (u, NULL, t); | |
7728 | label_vec.quick_push (u); | |
7729 | ||
65f4b875 | 7730 | si = gsi_last_nondebug_bb (s_entry_bb); |
629b3d75 MJ |
7731 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_SECTION); |
7732 | gcc_assert (i < len || gimple_omp_section_last_p (gsi_stmt (si))); | |
7733 | gsi_remove (&si, true); | |
7734 | single_succ_edge (s_entry_bb)->flags = EDGE_FALLTHRU; | |
7735 | ||
7736 | if (s_exit_bb == NULL) | |
7737 | continue; | |
7738 | ||
65f4b875 | 7739 | si = gsi_last_nondebug_bb (s_exit_bb); |
629b3d75 MJ |
7740 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_RETURN); |
7741 | gsi_remove (&si, true); | |
7742 | ||
7743 | single_succ_edge (s_exit_bb)->flags = EDGE_FALLTHRU; | |
7744 | } | |
7745 | ||
7746 | /* Error handling code goes in DEFAULT_BB. */ | |
7747 | t = gimple_block_label (default_bb); | |
7748 | u = build_case_label (NULL, NULL, t); | |
7749 | make_edge (l0_bb, default_bb, 0); | |
7750 | add_bb_to_loop (default_bb, current_loops->tree_root); | |
7751 | ||
7752 | stmt = gimple_build_switch (vmain, u, label_vec); | |
7753 | gsi_insert_after (&switch_si, stmt, GSI_SAME_STMT); | |
7754 | gsi_remove (&switch_si, true); | |
7755 | ||
7756 | si = gsi_start_bb (default_bb); | |
7757 | stmt = gimple_build_call (builtin_decl_explicit (BUILT_IN_TRAP), 0); | |
7758 | gsi_insert_after (&si, stmt, GSI_CONTINUE_LINKING); | |
7759 | ||
7760 | if (exit_reachable) | |
7761 | { | |
7762 | tree bfn_decl; | |
7763 | ||
7764 | /* Code to get the next section goes in L1_BB. */ | |
65f4b875 | 7765 | si = gsi_last_nondebug_bb (l1_bb); |
629b3d75 MJ |
7766 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_CONTINUE); |
7767 | ||
7768 | bfn_decl = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS_NEXT); | |
7769 | stmt = gimple_build_call (bfn_decl, 0); | |
7770 | gimple_call_set_lhs (stmt, vnext); | |
8e7757ba JJ |
7771 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); |
7772 | if (cond_var) | |
7773 | { | |
7774 | tree t = build2 (PLUS_EXPR, TREE_TYPE (cond_var), | |
7775 | vnext, build_one_cst (TREE_TYPE (cond_var))); | |
7776 | expand_omp_build_assign (&si, cond_var, t, false); | |
7777 | } | |
629b3d75 MJ |
7778 | gsi_remove (&si, true); |
7779 | ||
7780 | single_succ_edge (l1_bb)->flags = EDGE_FALLTHRU; | |
7781 | } | |
7782 | ||
7783 | /* Cleanup function replaces GIMPLE_OMP_RETURN in EXIT_BB. */ | |
65f4b875 | 7784 | si = gsi_last_nondebug_bb (l2_bb); |
629b3d75 MJ |
7785 | if (gimple_omp_return_nowait_p (gsi_stmt (si))) |
7786 | t = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS_END_NOWAIT); | |
7787 | else if (gimple_omp_return_lhs (gsi_stmt (si))) | |
7788 | t = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS_END_CANCEL); | |
7789 | else | |
7790 | t = builtin_decl_explicit (BUILT_IN_GOMP_SECTIONS_END); | |
7791 | stmt = gimple_build_call (t, 0); | |
7792 | if (gimple_omp_return_lhs (gsi_stmt (si))) | |
7793 | gimple_call_set_lhs (stmt, gimple_omp_return_lhs (gsi_stmt (si))); | |
7794 | gsi_insert_after (&si, stmt, GSI_SAME_STMT); | |
7795 | gsi_remove (&si, true); | |
7796 | ||
7797 | set_immediate_dominator (CDI_DOMINATORS, default_bb, l0_bb); | |
7798 | } | |
7799 | ||
7800 | /* Expand code for an OpenMP single directive. We've already expanded | |
7801 | much of the code, here we simply place the GOMP_barrier call. */ | |
7802 | ||
7803 | static void | |
7804 | expand_omp_single (struct omp_region *region) | |
7805 | { | |
7806 | basic_block entry_bb, exit_bb; | |
7807 | gimple_stmt_iterator si; | |
7808 | ||
7809 | entry_bb = region->entry; | |
7810 | exit_bb = region->exit; | |
7811 | ||
65f4b875 | 7812 | si = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
7813 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_SINGLE); |
7814 | gsi_remove (&si, true); | |
7815 | single_succ_edge (entry_bb)->flags = EDGE_FALLTHRU; | |
7816 | ||
65f4b875 | 7817 | si = gsi_last_nondebug_bb (exit_bb); |
629b3d75 MJ |
7818 | if (!gimple_omp_return_nowait_p (gsi_stmt (si))) |
7819 | { | |
7820 | tree t = gimple_omp_return_lhs (gsi_stmt (si)); | |
7821 | gsi_insert_after (&si, omp_build_barrier (t), GSI_SAME_STMT); | |
7822 | } | |
7823 | gsi_remove (&si, true); | |
7824 | single_succ_edge (exit_bb)->flags = EDGE_FALLTHRU; | |
7825 | } | |
7826 | ||
7827 | /* Generic expansion for OpenMP synchronization directives: master, | |
7828 | ordered and critical. All we need to do here is remove the entry | |
7829 | and exit markers for REGION. */ | |
7830 | ||
7831 | static void | |
7832 | expand_omp_synch (struct omp_region *region) | |
7833 | { | |
7834 | basic_block entry_bb, exit_bb; | |
7835 | gimple_stmt_iterator si; | |
7836 | ||
7837 | entry_bb = region->entry; | |
7838 | exit_bb = region->exit; | |
7839 | ||
65f4b875 | 7840 | si = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
7841 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_SINGLE |
7842 | || gimple_code (gsi_stmt (si)) == GIMPLE_OMP_MASTER | |
7843 | || gimple_code (gsi_stmt (si)) == GIMPLE_OMP_TASKGROUP | |
7844 | || gimple_code (gsi_stmt (si)) == GIMPLE_OMP_ORDERED | |
7845 | || gimple_code (gsi_stmt (si)) == GIMPLE_OMP_CRITICAL | |
7846 | || gimple_code (gsi_stmt (si)) == GIMPLE_OMP_TEAMS); | |
28567c40 JJ |
7847 | if (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_TEAMS |
7848 | && gimple_omp_teams_host (as_a <gomp_teams *> (gsi_stmt (si)))) | |
7849 | { | |
7850 | expand_omp_taskreg (region); | |
7851 | return; | |
7852 | } | |
629b3d75 MJ |
7853 | gsi_remove (&si, true); |
7854 | single_succ_edge (entry_bb)->flags = EDGE_FALLTHRU; | |
7855 | ||
7856 | if (exit_bb) | |
7857 | { | |
65f4b875 | 7858 | si = gsi_last_nondebug_bb (exit_bb); |
629b3d75 MJ |
7859 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_RETURN); |
7860 | gsi_remove (&si, true); | |
7861 | single_succ_edge (exit_bb)->flags = EDGE_FALLTHRU; | |
7862 | } | |
7863 | } | |
7864 | ||
28567c40 JJ |
7865 | /* Translate enum omp_memory_order to enum memmodel. The two enums |
7866 | are using different numbers so that OMP_MEMORY_ORDER_UNSPECIFIED | |
7867 | is 0. */ | |
7868 | ||
7869 | static enum memmodel | |
7870 | omp_memory_order_to_memmodel (enum omp_memory_order mo) | |
7871 | { | |
7872 | switch (mo) | |
7873 | { | |
7874 | case OMP_MEMORY_ORDER_RELAXED: return MEMMODEL_RELAXED; | |
7875 | case OMP_MEMORY_ORDER_ACQUIRE: return MEMMODEL_ACQUIRE; | |
7876 | case OMP_MEMORY_ORDER_RELEASE: return MEMMODEL_RELEASE; | |
7877 | case OMP_MEMORY_ORDER_ACQ_REL: return MEMMODEL_ACQ_REL; | |
7878 | case OMP_MEMORY_ORDER_SEQ_CST: return MEMMODEL_SEQ_CST; | |
7879 | default: gcc_unreachable (); | |
7880 | } | |
7881 | } | |
7882 | ||
629b3d75 MJ |
7883 | /* A subroutine of expand_omp_atomic. Attempt to implement the atomic |
7884 | operation as a normal volatile load. */ | |
7885 | ||
7886 | static bool | |
7887 | expand_omp_atomic_load (basic_block load_bb, tree addr, | |
7888 | tree loaded_val, int index) | |
7889 | { | |
7890 | enum built_in_function tmpbase; | |
7891 | gimple_stmt_iterator gsi; | |
7892 | basic_block store_bb; | |
7893 | location_t loc; | |
7894 | gimple *stmt; | |
7895 | tree decl, call, type, itype; | |
7896 | ||
65f4b875 | 7897 | gsi = gsi_last_nondebug_bb (load_bb); |
629b3d75 MJ |
7898 | stmt = gsi_stmt (gsi); |
7899 | gcc_assert (gimple_code (stmt) == GIMPLE_OMP_ATOMIC_LOAD); | |
7900 | loc = gimple_location (stmt); | |
7901 | ||
7902 | /* ??? If the target does not implement atomic_load_optab[mode], and mode | |
7903 | is smaller than word size, then expand_atomic_load assumes that the load | |
7904 | is atomic. We could avoid the builtin entirely in this case. */ | |
7905 | ||
7906 | tmpbase = (enum built_in_function) (BUILT_IN_ATOMIC_LOAD_N + index + 1); | |
7907 | decl = builtin_decl_explicit (tmpbase); | |
7908 | if (decl == NULL_TREE) | |
7909 | return false; | |
7910 | ||
7911 | type = TREE_TYPE (loaded_val); | |
7912 | itype = TREE_TYPE (TREE_TYPE (decl)); | |
7913 | ||
28567c40 JJ |
7914 | enum omp_memory_order omo = gimple_omp_atomic_memory_order (stmt); |
7915 | tree mo = build_int_cst (NULL, omp_memory_order_to_memmodel (omo)); | |
7916 | call = build_call_expr_loc (loc, decl, 2, addr, mo); | |
629b3d75 MJ |
7917 | if (!useless_type_conversion_p (type, itype)) |
7918 | call = fold_build1_loc (loc, VIEW_CONVERT_EXPR, type, call); | |
7919 | call = build2_loc (loc, MODIFY_EXPR, void_type_node, loaded_val, call); | |
7920 | ||
7921 | force_gimple_operand_gsi (&gsi, call, true, NULL_TREE, true, GSI_SAME_STMT); | |
7922 | gsi_remove (&gsi, true); | |
7923 | ||
7924 | store_bb = single_succ (load_bb); | |
65f4b875 | 7925 | gsi = gsi_last_nondebug_bb (store_bb); |
629b3d75 MJ |
7926 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_ATOMIC_STORE); |
7927 | gsi_remove (&gsi, true); | |
7928 | ||
7929 | if (gimple_in_ssa_p (cfun)) | |
7930 | update_ssa (TODO_update_ssa_no_phi); | |
7931 | ||
7932 | return true; | |
7933 | } | |
7934 | ||
7935 | /* A subroutine of expand_omp_atomic. Attempt to implement the atomic | |
7936 | operation as a normal volatile store. */ | |
7937 | ||
7938 | static bool | |
7939 | expand_omp_atomic_store (basic_block load_bb, tree addr, | |
7940 | tree loaded_val, tree stored_val, int index) | |
7941 | { | |
7942 | enum built_in_function tmpbase; | |
7943 | gimple_stmt_iterator gsi; | |
7944 | basic_block store_bb = single_succ (load_bb); | |
7945 | location_t loc; | |
7946 | gimple *stmt; | |
7947 | tree decl, call, type, itype; | |
7948 | machine_mode imode; | |
7949 | bool exchange; | |
7950 | ||
65f4b875 | 7951 | gsi = gsi_last_nondebug_bb (load_bb); |
629b3d75 MJ |
7952 | stmt = gsi_stmt (gsi); |
7953 | gcc_assert (gimple_code (stmt) == GIMPLE_OMP_ATOMIC_LOAD); | |
7954 | ||
7955 | /* If the load value is needed, then this isn't a store but an exchange. */ | |
7956 | exchange = gimple_omp_atomic_need_value_p (stmt); | |
7957 | ||
65f4b875 | 7958 | gsi = gsi_last_nondebug_bb (store_bb); |
629b3d75 MJ |
7959 | stmt = gsi_stmt (gsi); |
7960 | gcc_assert (gimple_code (stmt) == GIMPLE_OMP_ATOMIC_STORE); | |
7961 | loc = gimple_location (stmt); | |
7962 | ||
7963 | /* ??? If the target does not implement atomic_store_optab[mode], and mode | |
7964 | is smaller than word size, then expand_atomic_store assumes that the store | |
7965 | is atomic. We could avoid the builtin entirely in this case. */ | |
7966 | ||
7967 | tmpbase = (exchange ? BUILT_IN_ATOMIC_EXCHANGE_N : BUILT_IN_ATOMIC_STORE_N); | |
7968 | tmpbase = (enum built_in_function) ((int) tmpbase + index + 1); | |
7969 | decl = builtin_decl_explicit (tmpbase); | |
7970 | if (decl == NULL_TREE) | |
7971 | return false; | |
7972 | ||
7973 | type = TREE_TYPE (stored_val); | |
7974 | ||
7975 | /* Dig out the type of the function's second argument. */ | |
7976 | itype = TREE_TYPE (decl); | |
7977 | itype = TYPE_ARG_TYPES (itype); | |
7978 | itype = TREE_CHAIN (itype); | |
7979 | itype = TREE_VALUE (itype); | |
7980 | imode = TYPE_MODE (itype); | |
7981 | ||
7982 | if (exchange && !can_atomic_exchange_p (imode, true)) | |
7983 | return false; | |
7984 | ||
7985 | if (!useless_type_conversion_p (itype, type)) | |
7986 | stored_val = fold_build1_loc (loc, VIEW_CONVERT_EXPR, itype, stored_val); | |
28567c40 JJ |
7987 | enum omp_memory_order omo = gimple_omp_atomic_memory_order (stmt); |
7988 | tree mo = build_int_cst (NULL, omp_memory_order_to_memmodel (omo)); | |
7989 | call = build_call_expr_loc (loc, decl, 3, addr, stored_val, mo); | |
629b3d75 MJ |
7990 | if (exchange) |
7991 | { | |
7992 | if (!useless_type_conversion_p (type, itype)) | |
7993 | call = build1_loc (loc, VIEW_CONVERT_EXPR, type, call); | |
7994 | call = build2_loc (loc, MODIFY_EXPR, void_type_node, loaded_val, call); | |
7995 | } | |
7996 | ||
7997 | force_gimple_operand_gsi (&gsi, call, true, NULL_TREE, true, GSI_SAME_STMT); | |
7998 | gsi_remove (&gsi, true); | |
7999 | ||
8000 | /* Remove the GIMPLE_OMP_ATOMIC_LOAD that we verified above. */ | |
65f4b875 | 8001 | gsi = gsi_last_nondebug_bb (load_bb); |
629b3d75 MJ |
8002 | gsi_remove (&gsi, true); |
8003 | ||
8004 | if (gimple_in_ssa_p (cfun)) | |
8005 | update_ssa (TODO_update_ssa_no_phi); | |
8006 | ||
8007 | return true; | |
8008 | } | |
8009 | ||
8010 | /* A subroutine of expand_omp_atomic. Attempt to implement the atomic | |
8011 | operation as a __atomic_fetch_op builtin. INDEX is log2 of the | |
8012 | size of the data type, and thus usable to find the index of the builtin | |
8013 | decl. Returns false if the expression is not of the proper form. */ | |
8014 | ||
8015 | static bool | |
8016 | expand_omp_atomic_fetch_op (basic_block load_bb, | |
8017 | tree addr, tree loaded_val, | |
8018 | tree stored_val, int index) | |
8019 | { | |
8020 | enum built_in_function oldbase, newbase, tmpbase; | |
8021 | tree decl, itype, call; | |
8022 | tree lhs, rhs; | |
8023 | basic_block store_bb = single_succ (load_bb); | |
8024 | gimple_stmt_iterator gsi; | |
8025 | gimple *stmt; | |
8026 | location_t loc; | |
8027 | enum tree_code code; | |
8028 | bool need_old, need_new; | |
8029 | machine_mode imode; | |
629b3d75 MJ |
8030 | |
8031 | /* We expect to find the following sequences: | |
8032 | ||
8033 | load_bb: | |
8034 | GIMPLE_OMP_ATOMIC_LOAD (tmp, mem) | |
8035 | ||
8036 | store_bb: | |
8037 | val = tmp OP something; (or: something OP tmp) | |
8038 | GIMPLE_OMP_STORE (val) | |
8039 | ||
8040 | ???FIXME: Allow a more flexible sequence. | |
8041 | Perhaps use data flow to pick the statements. | |
8042 | ||
8043 | */ | |
8044 | ||
8045 | gsi = gsi_after_labels (store_bb); | |
8046 | stmt = gsi_stmt (gsi); | |
65f4b875 AO |
8047 | if (is_gimple_debug (stmt)) |
8048 | { | |
8049 | gsi_next_nondebug (&gsi); | |
8050 | if (gsi_end_p (gsi)) | |
8051 | return false; | |
8052 | stmt = gsi_stmt (gsi); | |
8053 | } | |
629b3d75 MJ |
8054 | loc = gimple_location (stmt); |
8055 | if (!is_gimple_assign (stmt)) | |
8056 | return false; | |
65f4b875 | 8057 | gsi_next_nondebug (&gsi); |
629b3d75 MJ |
8058 | if (gimple_code (gsi_stmt (gsi)) != GIMPLE_OMP_ATOMIC_STORE) |
8059 | return false; | |
8060 | need_new = gimple_omp_atomic_need_value_p (gsi_stmt (gsi)); | |
8061 | need_old = gimple_omp_atomic_need_value_p (last_stmt (load_bb)); | |
28567c40 JJ |
8062 | enum omp_memory_order omo |
8063 | = gimple_omp_atomic_memory_order (last_stmt (load_bb)); | |
8064 | enum memmodel mo = omp_memory_order_to_memmodel (omo); | |
629b3d75 MJ |
8065 | gcc_checking_assert (!need_old || !need_new); |
8066 | ||
8067 | if (!operand_equal_p (gimple_assign_lhs (stmt), stored_val, 0)) | |
8068 | return false; | |
8069 | ||
8070 | /* Check for one of the supported fetch-op operations. */ | |
8071 | code = gimple_assign_rhs_code (stmt); | |
8072 | switch (code) | |
8073 | { | |
8074 | case PLUS_EXPR: | |
8075 | case POINTER_PLUS_EXPR: | |
8076 | oldbase = BUILT_IN_ATOMIC_FETCH_ADD_N; | |
8077 | newbase = BUILT_IN_ATOMIC_ADD_FETCH_N; | |
8078 | break; | |
8079 | case MINUS_EXPR: | |
8080 | oldbase = BUILT_IN_ATOMIC_FETCH_SUB_N; | |
8081 | newbase = BUILT_IN_ATOMIC_SUB_FETCH_N; | |
8082 | break; | |
8083 | case BIT_AND_EXPR: | |
8084 | oldbase = BUILT_IN_ATOMIC_FETCH_AND_N; | |
8085 | newbase = BUILT_IN_ATOMIC_AND_FETCH_N; | |
8086 | break; | |
8087 | case BIT_IOR_EXPR: | |
8088 | oldbase = BUILT_IN_ATOMIC_FETCH_OR_N; | |
8089 | newbase = BUILT_IN_ATOMIC_OR_FETCH_N; | |
8090 | break; | |
8091 | case BIT_XOR_EXPR: | |
8092 | oldbase = BUILT_IN_ATOMIC_FETCH_XOR_N; | |
8093 | newbase = BUILT_IN_ATOMIC_XOR_FETCH_N; | |
8094 | break; | |
8095 | default: | |
8096 | return false; | |
8097 | } | |
8098 | ||
8099 | /* Make sure the expression is of the proper form. */ | |
8100 | if (operand_equal_p (gimple_assign_rhs1 (stmt), loaded_val, 0)) | |
8101 | rhs = gimple_assign_rhs2 (stmt); | |
8102 | else if (commutative_tree_code (gimple_assign_rhs_code (stmt)) | |
8103 | && operand_equal_p (gimple_assign_rhs2 (stmt), loaded_val, 0)) | |
8104 | rhs = gimple_assign_rhs1 (stmt); | |
8105 | else | |
8106 | return false; | |
8107 | ||
8108 | tmpbase = ((enum built_in_function) | |
8109 | ((need_new ? newbase : oldbase) + index + 1)); | |
8110 | decl = builtin_decl_explicit (tmpbase); | |
8111 | if (decl == NULL_TREE) | |
8112 | return false; | |
8113 | itype = TREE_TYPE (TREE_TYPE (decl)); | |
8114 | imode = TYPE_MODE (itype); | |
8115 | ||
8116 | /* We could test all of the various optabs involved, but the fact of the | |
8117 | matter is that (with the exception of i486 vs i586 and xadd) all targets | |
8118 | that support any atomic operaton optab also implements compare-and-swap. | |
8119 | Let optabs.c take care of expanding any compare-and-swap loop. */ | |
dc06356a | 8120 | if (!can_compare_and_swap_p (imode, true) || !can_atomic_load_p (imode)) |
629b3d75 MJ |
8121 | return false; |
8122 | ||
65f4b875 | 8123 | gsi = gsi_last_nondebug_bb (load_bb); |
629b3d75 MJ |
8124 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_ATOMIC_LOAD); |
8125 | ||
8126 | /* OpenMP does not imply any barrier-like semantics on its atomic ops. | |
8127 | It only requires that the operation happen atomically. Thus we can | |
8128 | use the RELAXED memory model. */ | |
8129 | call = build_call_expr_loc (loc, decl, 3, addr, | |
8130 | fold_convert_loc (loc, itype, rhs), | |
28567c40 | 8131 | build_int_cst (NULL, mo)); |
629b3d75 MJ |
8132 | |
8133 | if (need_old || need_new) | |
8134 | { | |
8135 | lhs = need_old ? loaded_val : stored_val; | |
8136 | call = fold_convert_loc (loc, TREE_TYPE (lhs), call); | |
8137 | call = build2_loc (loc, MODIFY_EXPR, void_type_node, lhs, call); | |
8138 | } | |
8139 | else | |
8140 | call = fold_convert_loc (loc, void_type_node, call); | |
8141 | force_gimple_operand_gsi (&gsi, call, true, NULL_TREE, true, GSI_SAME_STMT); | |
8142 | gsi_remove (&gsi, true); | |
8143 | ||
65f4b875 | 8144 | gsi = gsi_last_nondebug_bb (store_bb); |
629b3d75 MJ |
8145 | gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_ATOMIC_STORE); |
8146 | gsi_remove (&gsi, true); | |
65f4b875 | 8147 | gsi = gsi_last_nondebug_bb (store_bb); |
629b3d75 MJ |
8148 | stmt = gsi_stmt (gsi); |
8149 | gsi_remove (&gsi, true); | |
8150 | ||
8151 | if (gimple_in_ssa_p (cfun)) | |
8152 | { | |
8153 | release_defs (stmt); | |
8154 | update_ssa (TODO_update_ssa_no_phi); | |
8155 | } | |
8156 | ||
8157 | return true; | |
8158 | } | |
8159 | ||
8160 | /* A subroutine of expand_omp_atomic. Implement the atomic operation as: | |
8161 | ||
8162 | oldval = *addr; | |
8163 | repeat: | |
01914336 | 8164 | newval = rhs; // with oldval replacing *addr in rhs |
629b3d75 MJ |
8165 | oldval = __sync_val_compare_and_swap (addr, oldval, newval); |
8166 | if (oldval != newval) | |
8167 | goto repeat; | |
8168 | ||
8169 | INDEX is log2 of the size of the data type, and thus usable to find the | |
8170 | index of the builtin decl. */ | |
8171 | ||
8172 | static bool | |
8173 | expand_omp_atomic_pipeline (basic_block load_bb, basic_block store_bb, | |
8174 | tree addr, tree loaded_val, tree stored_val, | |
8175 | int index) | |
8176 | { | |
8177 | tree loadedi, storedi, initial, new_storedi, old_vali; | |
b4e47472 | 8178 | tree type, itype, cmpxchg, iaddr, atype; |
629b3d75 MJ |
8179 | gimple_stmt_iterator si; |
8180 | basic_block loop_header = single_succ (load_bb); | |
8181 | gimple *phi, *stmt; | |
8182 | edge e; | |
8183 | enum built_in_function fncode; | |
8184 | ||
8185 | /* ??? We need a non-pointer interface to __atomic_compare_exchange in | |
8186 | order to use the RELAXED memory model effectively. */ | |
8187 | fncode = (enum built_in_function)((int)BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_N | |
8188 | + index + 1); | |
8189 | cmpxchg = builtin_decl_explicit (fncode); | |
8190 | if (cmpxchg == NULL_TREE) | |
8191 | return false; | |
b4e47472 JJ |
8192 | type = TYPE_MAIN_VARIANT (TREE_TYPE (loaded_val)); |
8193 | atype = type; | |
629b3d75 MJ |
8194 | itype = TREE_TYPE (TREE_TYPE (cmpxchg)); |
8195 | ||
dc06356a JJ |
8196 | if (!can_compare_and_swap_p (TYPE_MODE (itype), true) |
8197 | || !can_atomic_load_p (TYPE_MODE (itype))) | |
629b3d75 MJ |
8198 | return false; |
8199 | ||
8200 | /* Load the initial value, replacing the GIMPLE_OMP_ATOMIC_LOAD. */ | |
65f4b875 | 8201 | si = gsi_last_nondebug_bb (load_bb); |
629b3d75 MJ |
8202 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_ATOMIC_LOAD); |
8203 | ||
8204 | /* For floating-point values, we'll need to view-convert them to integers | |
8205 | so that we can perform the atomic compare and swap. Simplify the | |
8206 | following code by always setting up the "i"ntegral variables. */ | |
8207 | if (!INTEGRAL_TYPE_P (type) && !POINTER_TYPE_P (type)) | |
8208 | { | |
8209 | tree iaddr_val; | |
8210 | ||
8211 | iaddr = create_tmp_reg (build_pointer_type_for_mode (itype, ptr_mode, | |
8212 | true)); | |
b4e47472 | 8213 | atype = itype; |
629b3d75 MJ |
8214 | iaddr_val |
8215 | = force_gimple_operand_gsi (&si, | |
8216 | fold_convert (TREE_TYPE (iaddr), addr), | |
8217 | false, NULL_TREE, true, GSI_SAME_STMT); | |
8218 | stmt = gimple_build_assign (iaddr, iaddr_val); | |
8219 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); | |
8220 | loadedi = create_tmp_var (itype); | |
8221 | if (gimple_in_ssa_p (cfun)) | |
8222 | loadedi = make_ssa_name (loadedi); | |
8223 | } | |
8224 | else | |
8225 | { | |
8226 | iaddr = addr; | |
8227 | loadedi = loaded_val; | |
8228 | } | |
8229 | ||
8230 | fncode = (enum built_in_function) (BUILT_IN_ATOMIC_LOAD_N + index + 1); | |
8231 | tree loaddecl = builtin_decl_explicit (fncode); | |
8232 | if (loaddecl) | |
8233 | initial | |
b4e47472 | 8234 | = fold_convert (atype, |
629b3d75 MJ |
8235 | build_call_expr (loaddecl, 2, iaddr, |
8236 | build_int_cst (NULL_TREE, | |
8237 | MEMMODEL_RELAXED))); | |
8238 | else | |
b4e47472 JJ |
8239 | { |
8240 | tree off | |
8241 | = build_int_cst (build_pointer_type_for_mode (atype, ptr_mode, | |
8242 | true), 0); | |
8243 | initial = build2 (MEM_REF, atype, iaddr, off); | |
8244 | } | |
629b3d75 MJ |
8245 | |
8246 | initial | |
8247 | = force_gimple_operand_gsi (&si, initial, true, NULL_TREE, true, | |
8248 | GSI_SAME_STMT); | |
8249 | ||
8250 | /* Move the value to the LOADEDI temporary. */ | |
8251 | if (gimple_in_ssa_p (cfun)) | |
8252 | { | |
8253 | gcc_assert (gimple_seq_empty_p (phi_nodes (loop_header))); | |
8254 | phi = create_phi_node (loadedi, loop_header); | |
8255 | SET_USE (PHI_ARG_DEF_PTR_FROM_EDGE (phi, single_succ_edge (load_bb)), | |
8256 | initial); | |
8257 | } | |
8258 | else | |
8259 | gsi_insert_before (&si, | |
8260 | gimple_build_assign (loadedi, initial), | |
8261 | GSI_SAME_STMT); | |
8262 | if (loadedi != loaded_val) | |
8263 | { | |
8264 | gimple_stmt_iterator gsi2; | |
8265 | tree x; | |
8266 | ||
8267 | x = build1 (VIEW_CONVERT_EXPR, type, loadedi); | |
8268 | gsi2 = gsi_start_bb (loop_header); | |
8269 | if (gimple_in_ssa_p (cfun)) | |
8270 | { | |
8271 | gassign *stmt; | |
8272 | x = force_gimple_operand_gsi (&gsi2, x, true, NULL_TREE, | |
8273 | true, GSI_SAME_STMT); | |
8274 | stmt = gimple_build_assign (loaded_val, x); | |
8275 | gsi_insert_before (&gsi2, stmt, GSI_SAME_STMT); | |
8276 | } | |
8277 | else | |
8278 | { | |
8279 | x = build2 (MODIFY_EXPR, TREE_TYPE (loaded_val), loaded_val, x); | |
8280 | force_gimple_operand_gsi (&gsi2, x, true, NULL_TREE, | |
8281 | true, GSI_SAME_STMT); | |
8282 | } | |
8283 | } | |
8284 | gsi_remove (&si, true); | |
8285 | ||
65f4b875 | 8286 | si = gsi_last_nondebug_bb (store_bb); |
629b3d75 MJ |
8287 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_ATOMIC_STORE); |
8288 | ||
8289 | if (iaddr == addr) | |
8290 | storedi = stored_val; | |
8291 | else | |
01914336 MJ |
8292 | storedi |
8293 | = force_gimple_operand_gsi (&si, | |
8294 | build1 (VIEW_CONVERT_EXPR, itype, | |
8295 | stored_val), true, NULL_TREE, true, | |
8296 | GSI_SAME_STMT); | |
629b3d75 MJ |
8297 | |
8298 | /* Build the compare&swap statement. */ | |
8299 | new_storedi = build_call_expr (cmpxchg, 3, iaddr, loadedi, storedi); | |
8300 | new_storedi = force_gimple_operand_gsi (&si, | |
8301 | fold_convert (TREE_TYPE (loadedi), | |
8302 | new_storedi), | |
8303 | true, NULL_TREE, | |
8304 | true, GSI_SAME_STMT); | |
8305 | ||
8306 | if (gimple_in_ssa_p (cfun)) | |
8307 | old_vali = loadedi; | |
8308 | else | |
8309 | { | |
8310 | old_vali = create_tmp_var (TREE_TYPE (loadedi)); | |
8311 | stmt = gimple_build_assign (old_vali, loadedi); | |
8312 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); | |
8313 | ||
8314 | stmt = gimple_build_assign (loadedi, new_storedi); | |
8315 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); | |
8316 | } | |
8317 | ||
8318 | /* Note that we always perform the comparison as an integer, even for | |
8319 | floating point. This allows the atomic operation to properly | |
8320 | succeed even with NaNs and -0.0. */ | |
01914336 MJ |
8321 | tree ne = build2 (NE_EXPR, boolean_type_node, new_storedi, old_vali); |
8322 | stmt = gimple_build_cond_empty (ne); | |
629b3d75 MJ |
8323 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); |
8324 | ||
8325 | /* Update cfg. */ | |
8326 | e = single_succ_edge (store_bb); | |
8327 | e->flags &= ~EDGE_FALLTHRU; | |
8328 | e->flags |= EDGE_FALSE_VALUE; | |
357067f2 JH |
8329 | /* Expect no looping. */ |
8330 | e->probability = profile_probability::guessed_always (); | |
629b3d75 MJ |
8331 | |
8332 | e = make_edge (store_bb, loop_header, EDGE_TRUE_VALUE); | |
357067f2 | 8333 | e->probability = profile_probability::guessed_never (); |
629b3d75 MJ |
8334 | |
8335 | /* Copy the new value to loadedi (we already did that before the condition | |
8336 | if we are not in SSA). */ | |
8337 | if (gimple_in_ssa_p (cfun)) | |
8338 | { | |
8339 | phi = gimple_seq_first_stmt (phi_nodes (loop_header)); | |
8340 | SET_USE (PHI_ARG_DEF_PTR_FROM_EDGE (phi, e), new_storedi); | |
8341 | } | |
8342 | ||
8343 | /* Remove GIMPLE_OMP_ATOMIC_STORE. */ | |
8344 | gsi_remove (&si, true); | |
8345 | ||
99b1c316 | 8346 | class loop *loop = alloc_loop (); |
629b3d75 MJ |
8347 | loop->header = loop_header; |
8348 | loop->latch = store_bb; | |
8349 | add_loop (loop, loop_header->loop_father); | |
8350 | ||
8351 | if (gimple_in_ssa_p (cfun)) | |
8352 | update_ssa (TODO_update_ssa_no_phi); | |
8353 | ||
8354 | return true; | |
8355 | } | |
8356 | ||
8357 | /* A subroutine of expand_omp_atomic. Implement the atomic operation as: | |
8358 | ||
01914336 MJ |
8359 | GOMP_atomic_start (); |
8360 | *addr = rhs; | |
8361 | GOMP_atomic_end (); | |
629b3d75 MJ |
8362 | |
8363 | The result is not globally atomic, but works so long as all parallel | |
8364 | references are within #pragma omp atomic directives. According to | |
8365 | responses received from omp@openmp.org, appears to be within spec. | |
8366 | Which makes sense, since that's how several other compilers handle | |
8367 | this situation as well. | |
8368 | LOADED_VAL and ADDR are the operands of GIMPLE_OMP_ATOMIC_LOAD we're | |
8369 | expanding. STORED_VAL is the operand of the matching | |
8370 | GIMPLE_OMP_ATOMIC_STORE. | |
8371 | ||
8372 | We replace | |
8373 | GIMPLE_OMP_ATOMIC_LOAD (loaded_val, addr) with | |
8374 | loaded_val = *addr; | |
8375 | ||
8376 | and replace | |
8377 | GIMPLE_OMP_ATOMIC_STORE (stored_val) with | |
8378 | *addr = stored_val; | |
8379 | */ | |
8380 | ||
8381 | static bool | |
8382 | expand_omp_atomic_mutex (basic_block load_bb, basic_block store_bb, | |
8383 | tree addr, tree loaded_val, tree stored_val) | |
8384 | { | |
8385 | gimple_stmt_iterator si; | |
8386 | gassign *stmt; | |
8387 | tree t; | |
8388 | ||
65f4b875 | 8389 | si = gsi_last_nondebug_bb (load_bb); |
629b3d75 MJ |
8390 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_ATOMIC_LOAD); |
8391 | ||
8392 | t = builtin_decl_explicit (BUILT_IN_GOMP_ATOMIC_START); | |
8393 | t = build_call_expr (t, 0); | |
8394 | force_gimple_operand_gsi (&si, t, true, NULL_TREE, true, GSI_SAME_STMT); | |
8395 | ||
b4e47472 JJ |
8396 | tree mem = build_simple_mem_ref (addr); |
8397 | TREE_TYPE (mem) = TREE_TYPE (loaded_val); | |
8398 | TREE_OPERAND (mem, 1) | |
8399 | = fold_convert (build_pointer_type_for_mode (TREE_TYPE (mem), ptr_mode, | |
8400 | true), | |
8401 | TREE_OPERAND (mem, 1)); | |
8402 | stmt = gimple_build_assign (loaded_val, mem); | |
629b3d75 MJ |
8403 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); |
8404 | gsi_remove (&si, true); | |
8405 | ||
65f4b875 | 8406 | si = gsi_last_nondebug_bb (store_bb); |
629b3d75 MJ |
8407 | gcc_assert (gimple_code (gsi_stmt (si)) == GIMPLE_OMP_ATOMIC_STORE); |
8408 | ||
b4e47472 | 8409 | stmt = gimple_build_assign (unshare_expr (mem), stored_val); |
629b3d75 MJ |
8410 | gsi_insert_before (&si, stmt, GSI_SAME_STMT); |
8411 | ||
8412 | t = builtin_decl_explicit (BUILT_IN_GOMP_ATOMIC_END); | |
8413 | t = build_call_expr (t, 0); | |
8414 | force_gimple_operand_gsi (&si, t, true, NULL_TREE, true, GSI_SAME_STMT); | |
8415 | gsi_remove (&si, true); | |
8416 | ||
8417 | if (gimple_in_ssa_p (cfun)) | |
8418 | update_ssa (TODO_update_ssa_no_phi); | |
8419 | return true; | |
8420 | } | |
8421 | ||
8422 | /* Expand an GIMPLE_OMP_ATOMIC statement. We try to expand | |
01914336 | 8423 | using expand_omp_atomic_fetch_op. If it failed, we try to |
629b3d75 MJ |
8424 | call expand_omp_atomic_pipeline, and if it fails too, the |
8425 | ultimate fallback is wrapping the operation in a mutex | |
8426 | (expand_omp_atomic_mutex). REGION is the atomic region built | |
8427 | by build_omp_regions_1(). */ | |
8428 | ||
8429 | static void | |
8430 | expand_omp_atomic (struct omp_region *region) | |
8431 | { | |
8432 | basic_block load_bb = region->entry, store_bb = region->exit; | |
8433 | gomp_atomic_load *load = as_a <gomp_atomic_load *> (last_stmt (load_bb)); | |
8434 | gomp_atomic_store *store = as_a <gomp_atomic_store *> (last_stmt (store_bb)); | |
8435 | tree loaded_val = gimple_omp_atomic_load_lhs (load); | |
8436 | tree addr = gimple_omp_atomic_load_rhs (load); | |
8437 | tree stored_val = gimple_omp_atomic_store_val (store); | |
b4e47472 | 8438 | tree type = TYPE_MAIN_VARIANT (TREE_TYPE (loaded_val)); |
629b3d75 MJ |
8439 | HOST_WIDE_INT index; |
8440 | ||
8441 | /* Make sure the type is one of the supported sizes. */ | |
8442 | index = tree_to_uhwi (TYPE_SIZE_UNIT (type)); | |
8443 | index = exact_log2 (index); | |
8444 | if (index >= 0 && index <= 4) | |
8445 | { | |
8446 | unsigned int align = TYPE_ALIGN_UNIT (type); | |
8447 | ||
8448 | /* __sync builtins require strict data alignment. */ | |
8449 | if (exact_log2 (align) >= index) | |
8450 | { | |
8451 | /* Atomic load. */ | |
3bd8f481 | 8452 | scalar_mode smode; |
629b3d75 | 8453 | if (loaded_val == stored_val |
3bd8f481 RS |
8454 | && (is_int_mode (TYPE_MODE (type), &smode) |
8455 | || is_float_mode (TYPE_MODE (type), &smode)) | |
8456 | && GET_MODE_BITSIZE (smode) <= BITS_PER_WORD | |
629b3d75 MJ |
8457 | && expand_omp_atomic_load (load_bb, addr, loaded_val, index)) |
8458 | return; | |
8459 | ||
8460 | /* Atomic store. */ | |
3bd8f481 RS |
8461 | if ((is_int_mode (TYPE_MODE (type), &smode) |
8462 | || is_float_mode (TYPE_MODE (type), &smode)) | |
8463 | && GET_MODE_BITSIZE (smode) <= BITS_PER_WORD | |
629b3d75 MJ |
8464 | && store_bb == single_succ (load_bb) |
8465 | && first_stmt (store_bb) == store | |
8466 | && expand_omp_atomic_store (load_bb, addr, loaded_val, | |
8467 | stored_val, index)) | |
8468 | return; | |
8469 | ||
8470 | /* When possible, use specialized atomic update functions. */ | |
8471 | if ((INTEGRAL_TYPE_P (type) || POINTER_TYPE_P (type)) | |
8472 | && store_bb == single_succ (load_bb) | |
8473 | && expand_omp_atomic_fetch_op (load_bb, addr, | |
8474 | loaded_val, stored_val, index)) | |
8475 | return; | |
8476 | ||
8477 | /* If we don't have specialized __sync builtins, try and implement | |
8478 | as a compare and swap loop. */ | |
8479 | if (expand_omp_atomic_pipeline (load_bb, store_bb, addr, | |
8480 | loaded_val, stored_val, index)) | |
8481 | return; | |
8482 | } | |
8483 | } | |
8484 | ||
8485 | /* The ultimate fallback is wrapping the operation in a mutex. */ | |
8486 | expand_omp_atomic_mutex (load_bb, store_bb, addr, loaded_val, stored_val); | |
8487 | } | |
8488 | ||
8489 | /* Mark the loops inside the kernels region starting at REGION_ENTRY and ending | |
8490 | at REGION_EXIT. */ | |
8491 | ||
8492 | static void | |
8493 | mark_loops_in_oacc_kernels_region (basic_block region_entry, | |
8494 | basic_block region_exit) | |
8495 | { | |
99b1c316 | 8496 | class loop *outer = region_entry->loop_father; |
629b3d75 MJ |
8497 | gcc_assert (region_exit == NULL || outer == region_exit->loop_father); |
8498 | ||
8499 | /* Don't parallelize the kernels region if it contains more than one outer | |
8500 | loop. */ | |
8501 | unsigned int nr_outer_loops = 0; | |
99b1c316 MS |
8502 | class loop *single_outer = NULL; |
8503 | for (class loop *loop = outer->inner; loop != NULL; loop = loop->next) | |
629b3d75 MJ |
8504 | { |
8505 | gcc_assert (loop_outer (loop) == outer); | |
8506 | ||
8507 | if (!dominated_by_p (CDI_DOMINATORS, loop->header, region_entry)) | |
8508 | continue; | |
8509 | ||
8510 | if (region_exit != NULL | |
8511 | && dominated_by_p (CDI_DOMINATORS, loop->header, region_exit)) | |
8512 | continue; | |
8513 | ||
8514 | nr_outer_loops++; | |
8515 | single_outer = loop; | |
8516 | } | |
8517 | if (nr_outer_loops != 1) | |
8518 | return; | |
8519 | ||
99b1c316 | 8520 | for (class loop *loop = single_outer->inner; |
01914336 MJ |
8521 | loop != NULL; |
8522 | loop = loop->inner) | |
629b3d75 MJ |
8523 | if (loop->next) |
8524 | return; | |
8525 | ||
8526 | /* Mark the loops in the region. */ | |
99b1c316 | 8527 | for (class loop *loop = single_outer; loop != NULL; loop = loop->inner) |
629b3d75 MJ |
8528 | loop->in_oacc_kernels_region = true; |
8529 | } | |
8530 | ||
8531 | /* Types used to pass grid and wortkgroup sizes to kernel invocation. */ | |
8532 | ||
8533 | struct GTY(()) grid_launch_attributes_trees | |
8534 | { | |
8535 | tree kernel_dim_array_type; | |
8536 | tree kernel_lattrs_dimnum_decl; | |
8537 | tree kernel_lattrs_grid_decl; | |
8538 | tree kernel_lattrs_group_decl; | |
8539 | tree kernel_launch_attributes_type; | |
8540 | }; | |
8541 | ||
8542 | static GTY(()) struct grid_launch_attributes_trees *grid_attr_trees; | |
8543 | ||
8544 | /* Create types used to pass kernel launch attributes to target. */ | |
8545 | ||
8546 | static void | |
8547 | grid_create_kernel_launch_attr_types (void) | |
8548 | { | |
8549 | if (grid_attr_trees) | |
8550 | return; | |
8551 | grid_attr_trees = ggc_alloc <grid_launch_attributes_trees> (); | |
8552 | ||
8553 | tree dim_arr_index_type | |
8554 | = build_index_type (build_int_cst (integer_type_node, 2)); | |
8555 | grid_attr_trees->kernel_dim_array_type | |
8556 | = build_array_type (uint32_type_node, dim_arr_index_type); | |
8557 | ||
8558 | grid_attr_trees->kernel_launch_attributes_type = make_node (RECORD_TYPE); | |
8559 | grid_attr_trees->kernel_lattrs_dimnum_decl | |
8560 | = build_decl (BUILTINS_LOCATION, FIELD_DECL, get_identifier ("ndim"), | |
8561 | uint32_type_node); | |
8562 | DECL_CHAIN (grid_attr_trees->kernel_lattrs_dimnum_decl) = NULL_TREE; | |
8563 | ||
8564 | grid_attr_trees->kernel_lattrs_grid_decl | |
8565 | = build_decl (BUILTINS_LOCATION, FIELD_DECL, get_identifier ("grid_size"), | |
8566 | grid_attr_trees->kernel_dim_array_type); | |
8567 | DECL_CHAIN (grid_attr_trees->kernel_lattrs_grid_decl) | |
8568 | = grid_attr_trees->kernel_lattrs_dimnum_decl; | |
8569 | grid_attr_trees->kernel_lattrs_group_decl | |
8570 | = build_decl (BUILTINS_LOCATION, FIELD_DECL, get_identifier ("group_size"), | |
8571 | grid_attr_trees->kernel_dim_array_type); | |
8572 | DECL_CHAIN (grid_attr_trees->kernel_lattrs_group_decl) | |
8573 | = grid_attr_trees->kernel_lattrs_grid_decl; | |
8574 | finish_builtin_struct (grid_attr_trees->kernel_launch_attributes_type, | |
8575 | "__gomp_kernel_launch_attributes", | |
8576 | grid_attr_trees->kernel_lattrs_group_decl, NULL_TREE); | |
8577 | } | |
8578 | ||
8579 | /* Insert before the current statement in GSI a store of VALUE to INDEX of | |
8580 | array (of type kernel_dim_array_type) FLD_DECL of RANGE_VAR. VALUE must be | |
8581 | of type uint32_type_node. */ | |
8582 | ||
8583 | static void | |
8584 | grid_insert_store_range_dim (gimple_stmt_iterator *gsi, tree range_var, | |
8585 | tree fld_decl, int index, tree value) | |
8586 | { | |
8587 | tree ref = build4 (ARRAY_REF, uint32_type_node, | |
8588 | build3 (COMPONENT_REF, | |
8589 | grid_attr_trees->kernel_dim_array_type, | |
8590 | range_var, fld_decl, NULL_TREE), | |
8591 | build_int_cst (integer_type_node, index), | |
8592 | NULL_TREE, NULL_TREE); | |
8593 | gsi_insert_before (gsi, gimple_build_assign (ref, value), GSI_SAME_STMT); | |
8594 | } | |
8595 | ||
8596 | /* Return a tree representation of a pointer to a structure with grid and | |
8597 | work-group size information. Statements filling that information will be | |
8598 | inserted before GSI, TGT_STMT is the target statement which has the | |
8599 | necessary information in it. */ | |
8600 | ||
8601 | static tree | |
8602 | grid_get_kernel_launch_attributes (gimple_stmt_iterator *gsi, | |
8603 | gomp_target *tgt_stmt) | |
8604 | { | |
8605 | grid_create_kernel_launch_attr_types (); | |
8606 | tree lattrs = create_tmp_var (grid_attr_trees->kernel_launch_attributes_type, | |
8607 | "__kernel_launch_attrs"); | |
8608 | ||
8609 | unsigned max_dim = 0; | |
8610 | for (tree clause = gimple_omp_target_clauses (tgt_stmt); | |
8611 | clause; | |
8612 | clause = OMP_CLAUSE_CHAIN (clause)) | |
8613 | { | |
8614 | if (OMP_CLAUSE_CODE (clause) != OMP_CLAUSE__GRIDDIM_) | |
8615 | continue; | |
8616 | ||
8617 | unsigned dim = OMP_CLAUSE__GRIDDIM__DIMENSION (clause); | |
8618 | max_dim = MAX (dim, max_dim); | |
8619 | ||
8620 | grid_insert_store_range_dim (gsi, lattrs, | |
8621 | grid_attr_trees->kernel_lattrs_grid_decl, | |
8622 | dim, OMP_CLAUSE__GRIDDIM__SIZE (clause)); | |
8623 | grid_insert_store_range_dim (gsi, lattrs, | |
8624 | grid_attr_trees->kernel_lattrs_group_decl, | |
8625 | dim, OMP_CLAUSE__GRIDDIM__GROUP (clause)); | |
8626 | } | |
8627 | ||
8628 | tree dimref = build3 (COMPONENT_REF, uint32_type_node, lattrs, | |
8629 | grid_attr_trees->kernel_lattrs_dimnum_decl, NULL_TREE); | |
8630 | gcc_checking_assert (max_dim <= 2); | |
8631 | tree dimensions = build_int_cstu (uint32_type_node, max_dim + 1); | |
8632 | gsi_insert_before (gsi, gimple_build_assign (dimref, dimensions), | |
8633 | GSI_SAME_STMT); | |
8634 | TREE_ADDRESSABLE (lattrs) = 1; | |
8635 | return build_fold_addr_expr (lattrs); | |
8636 | } | |
8637 | ||
8638 | /* Build target argument identifier from the DEVICE identifier, value | |
8639 | identifier ID and whether the element also has a SUBSEQUENT_PARAM. */ | |
8640 | ||
8641 | static tree | |
8642 | get_target_argument_identifier_1 (int device, bool subseqent_param, int id) | |
8643 | { | |
8644 | tree t = build_int_cst (integer_type_node, device); | |
8645 | if (subseqent_param) | |
8646 | t = fold_build2 (BIT_IOR_EXPR, integer_type_node, t, | |
8647 | build_int_cst (integer_type_node, | |
8648 | GOMP_TARGET_ARG_SUBSEQUENT_PARAM)); | |
8649 | t = fold_build2 (BIT_IOR_EXPR, integer_type_node, t, | |
8650 | build_int_cst (integer_type_node, id)); | |
8651 | return t; | |
8652 | } | |
8653 | ||
8654 | /* Like above but return it in type that can be directly stored as an element | |
8655 | of the argument array. */ | |
8656 | ||
8657 | static tree | |
8658 | get_target_argument_identifier (int device, bool subseqent_param, int id) | |
8659 | { | |
8660 | tree t = get_target_argument_identifier_1 (device, subseqent_param, id); | |
8661 | return fold_convert (ptr_type_node, t); | |
8662 | } | |
8663 | ||
8664 | /* Return a target argument consisting of DEVICE identifier, value identifier | |
8665 | ID, and the actual VALUE. */ | |
8666 | ||
8667 | static tree | |
8668 | get_target_argument_value (gimple_stmt_iterator *gsi, int device, int id, | |
8669 | tree value) | |
8670 | { | |
8671 | tree t = fold_build2 (LSHIFT_EXPR, integer_type_node, | |
8672 | fold_convert (integer_type_node, value), | |
8673 | build_int_cst (unsigned_type_node, | |
8674 | GOMP_TARGET_ARG_VALUE_SHIFT)); | |
8675 | t = fold_build2 (BIT_IOR_EXPR, integer_type_node, t, | |
8676 | get_target_argument_identifier_1 (device, false, id)); | |
8677 | t = fold_convert (ptr_type_node, t); | |
8678 | return force_gimple_operand_gsi (gsi, t, true, NULL, true, GSI_SAME_STMT); | |
8679 | } | |
8680 | ||
8681 | /* If VALUE is an integer constant greater than -2^15 and smaller than 2^15, | |
8682 | push one argument to ARGS with both the DEVICE, ID and VALUE embedded in it, | |
8683 | otherwise push an identifier (with DEVICE and ID) and the VALUE in two | |
8684 | arguments. */ | |
8685 | ||
8686 | static void | |
8687 | push_target_argument_according_to_value (gimple_stmt_iterator *gsi, int device, | |
8688 | int id, tree value, vec <tree> *args) | |
8689 | { | |
8690 | if (tree_fits_shwi_p (value) | |
8691 | && tree_to_shwi (value) > -(1 << 15) | |
8692 | && tree_to_shwi (value) < (1 << 15)) | |
8693 | args->quick_push (get_target_argument_value (gsi, device, id, value)); | |
8694 | else | |
8695 | { | |
8696 | args->quick_push (get_target_argument_identifier (device, true, id)); | |
8697 | value = fold_convert (ptr_type_node, value); | |
8698 | value = force_gimple_operand_gsi (gsi, value, true, NULL, true, | |
8699 | GSI_SAME_STMT); | |
8700 | args->quick_push (value); | |
8701 | } | |
8702 | } | |
8703 | ||
01914336 | 8704 | /* Create an array of arguments that is then passed to GOMP_target. */ |
629b3d75 MJ |
8705 | |
8706 | static tree | |
8707 | get_target_arguments (gimple_stmt_iterator *gsi, gomp_target *tgt_stmt) | |
8708 | { | |
8709 | auto_vec <tree, 6> args; | |
8710 | tree clauses = gimple_omp_target_clauses (tgt_stmt); | |
8711 | tree t, c = omp_find_clause (clauses, OMP_CLAUSE_NUM_TEAMS); | |
8712 | if (c) | |
8713 | t = OMP_CLAUSE_NUM_TEAMS_EXPR (c); | |
8714 | else | |
8715 | t = integer_minus_one_node; | |
8716 | push_target_argument_according_to_value (gsi, GOMP_TARGET_ARG_DEVICE_ALL, | |
8717 | GOMP_TARGET_ARG_NUM_TEAMS, t, &args); | |
8718 | ||
8719 | c = omp_find_clause (clauses, OMP_CLAUSE_THREAD_LIMIT); | |
8720 | if (c) | |
8721 | t = OMP_CLAUSE_THREAD_LIMIT_EXPR (c); | |
8722 | else | |
8723 | t = integer_minus_one_node; | |
8724 | push_target_argument_according_to_value (gsi, GOMP_TARGET_ARG_DEVICE_ALL, | |
8725 | GOMP_TARGET_ARG_THREAD_LIMIT, t, | |
8726 | &args); | |
8727 | ||
8728 | /* Add HSA-specific grid sizes, if available. */ | |
8729 | if (omp_find_clause (gimple_omp_target_clauses (tgt_stmt), | |
8730 | OMP_CLAUSE__GRIDDIM_)) | |
8731 | { | |
01914336 MJ |
8732 | int id = GOMP_TARGET_ARG_HSA_KERNEL_ATTRIBUTES; |
8733 | t = get_target_argument_identifier (GOMP_DEVICE_HSA, true, id); | |
629b3d75 MJ |
8734 | args.quick_push (t); |
8735 | args.quick_push (grid_get_kernel_launch_attributes (gsi, tgt_stmt)); | |
8736 | } | |
8737 | ||
8738 | /* Produce more, perhaps device specific, arguments here. */ | |
8739 | ||
8740 | tree argarray = create_tmp_var (build_array_type_nelts (ptr_type_node, | |
8741 | args.length () + 1), | |
8742 | ".omp_target_args"); | |
8743 | for (unsigned i = 0; i < args.length (); i++) | |
8744 | { | |
8745 | tree ref = build4 (ARRAY_REF, ptr_type_node, argarray, | |
8746 | build_int_cst (integer_type_node, i), | |
8747 | NULL_TREE, NULL_TREE); | |
8748 | gsi_insert_before (gsi, gimple_build_assign (ref, args[i]), | |
8749 | GSI_SAME_STMT); | |
8750 | } | |
8751 | tree ref = build4 (ARRAY_REF, ptr_type_node, argarray, | |
8752 | build_int_cst (integer_type_node, args.length ()), | |
8753 | NULL_TREE, NULL_TREE); | |
8754 | gsi_insert_before (gsi, gimple_build_assign (ref, null_pointer_node), | |
8755 | GSI_SAME_STMT); | |
8756 | TREE_ADDRESSABLE (argarray) = 1; | |
8757 | return build_fold_addr_expr (argarray); | |
8758 | } | |
8759 | ||
8760 | /* Expand the GIMPLE_OMP_TARGET starting at REGION. */ | |
8761 | ||
8762 | static void | |
8763 | expand_omp_target (struct omp_region *region) | |
8764 | { | |
8765 | basic_block entry_bb, exit_bb, new_bb; | |
8766 | struct function *child_cfun; | |
8767 | tree child_fn, block, t; | |
8768 | gimple_stmt_iterator gsi; | |
8769 | gomp_target *entry_stmt; | |
8770 | gimple *stmt; | |
8771 | edge e; | |
8772 | bool offloaded, data_region; | |
62aee289 | 8773 | int target_kind; |
629b3d75 MJ |
8774 | |
8775 | entry_stmt = as_a <gomp_target *> (last_stmt (region->entry)); | |
62aee289 | 8776 | target_kind = gimple_omp_target_kind (entry_stmt); |
629b3d75 MJ |
8777 | new_bb = region->entry; |
8778 | ||
8779 | offloaded = is_gimple_omp_offloaded (entry_stmt); | |
62aee289 | 8780 | switch (target_kind) |
629b3d75 MJ |
8781 | { |
8782 | case GF_OMP_TARGET_KIND_REGION: | |
8783 | case GF_OMP_TARGET_KIND_UPDATE: | |
8784 | case GF_OMP_TARGET_KIND_ENTER_DATA: | |
8785 | case GF_OMP_TARGET_KIND_EXIT_DATA: | |
8786 | case GF_OMP_TARGET_KIND_OACC_PARALLEL: | |
8787 | case GF_OMP_TARGET_KIND_OACC_KERNELS: | |
62aee289 | 8788 | case GF_OMP_TARGET_KIND_OACC_SERIAL: |
629b3d75 MJ |
8789 | case GF_OMP_TARGET_KIND_OACC_UPDATE: |
8790 | case GF_OMP_TARGET_KIND_OACC_ENTER_EXIT_DATA: | |
8791 | case GF_OMP_TARGET_KIND_OACC_DECLARE: | |
8792 | data_region = false; | |
8793 | break; | |
8794 | case GF_OMP_TARGET_KIND_DATA: | |
8795 | case GF_OMP_TARGET_KIND_OACC_DATA: | |
8796 | case GF_OMP_TARGET_KIND_OACC_HOST_DATA: | |
8797 | data_region = true; | |
8798 | break; | |
8799 | default: | |
8800 | gcc_unreachable (); | |
8801 | } | |
8802 | ||
8803 | child_fn = NULL_TREE; | |
8804 | child_cfun = NULL; | |
8805 | if (offloaded) | |
8806 | { | |
8807 | child_fn = gimple_omp_target_child_fn (entry_stmt); | |
8808 | child_cfun = DECL_STRUCT_FUNCTION (child_fn); | |
8809 | } | |
8810 | ||
8811 | /* Supported by expand_omp_taskreg, but not here. */ | |
8812 | if (child_cfun != NULL) | |
8813 | gcc_checking_assert (!child_cfun->cfg); | |
8814 | gcc_checking_assert (!gimple_in_ssa_p (cfun)); | |
8815 | ||
8816 | entry_bb = region->entry; | |
8817 | exit_bb = region->exit; | |
8818 | ||
62aee289 | 8819 | switch (target_kind) |
25651634 | 8820 | { |
62aee289 | 8821 | case GF_OMP_TARGET_KIND_OACC_KERNELS: |
25651634 TS |
8822 | mark_loops_in_oacc_kernels_region (region->entry, region->exit); |
8823 | ||
62aee289 MR |
8824 | /* Further down, all OpenACC compute constructs will be mapped to |
8825 | BUILT_IN_GOACC_PARALLEL, and to distinguish between them, there | |
8826 | is an "oacc kernels" attribute set for OpenACC kernels. */ | |
25651634 TS |
8827 | DECL_ATTRIBUTES (child_fn) |
8828 | = tree_cons (get_identifier ("oacc kernels"), | |
8829 | NULL_TREE, DECL_ATTRIBUTES (child_fn)); | |
62aee289 MR |
8830 | break; |
8831 | case GF_OMP_TARGET_KIND_OACC_SERIAL: | |
8832 | /* Further down, all OpenACC compute constructs will be mapped to | |
8833 | BUILT_IN_GOACC_PARALLEL, and to distinguish between them, there | |
8834 | is an "oacc serial" attribute set for OpenACC serial. */ | |
8835 | DECL_ATTRIBUTES (child_fn) | |
8836 | = tree_cons (get_identifier ("oacc serial"), | |
8837 | NULL_TREE, DECL_ATTRIBUTES (child_fn)); | |
8838 | break; | |
8839 | default: | |
8840 | break; | |
25651634 | 8841 | } |
629b3d75 MJ |
8842 | |
8843 | if (offloaded) | |
8844 | { | |
8845 | unsigned srcidx, dstidx, num; | |
8846 | ||
8847 | /* If the offloading region needs data sent from the parent | |
8848 | function, then the very first statement (except possible | |
8849 | tree profile counter updates) of the offloading body | |
8850 | is a copy assignment .OMP_DATA_I = &.OMP_DATA_O. Since | |
8851 | &.OMP_DATA_O is passed as an argument to the child function, | |
8852 | we need to replace it with the argument as seen by the child | |
8853 | function. | |
8854 | ||
8855 | In most cases, this will end up being the identity assignment | |
8856 | .OMP_DATA_I = .OMP_DATA_I. However, if the offloading body had | |
8857 | a function call that has been inlined, the original PARM_DECL | |
8858 | .OMP_DATA_I may have been converted into a different local | |
8859 | variable. In which case, we need to keep the assignment. */ | |
8860 | tree data_arg = gimple_omp_target_data_arg (entry_stmt); | |
8861 | if (data_arg) | |
8862 | { | |
8863 | basic_block entry_succ_bb = single_succ (entry_bb); | |
8864 | gimple_stmt_iterator gsi; | |
8865 | tree arg; | |
8866 | gimple *tgtcopy_stmt = NULL; | |
8867 | tree sender = TREE_VEC_ELT (data_arg, 0); | |
8868 | ||
8869 | for (gsi = gsi_start_bb (entry_succ_bb); ; gsi_next (&gsi)) | |
8870 | { | |
8871 | gcc_assert (!gsi_end_p (gsi)); | |
8872 | stmt = gsi_stmt (gsi); | |
8873 | if (gimple_code (stmt) != GIMPLE_ASSIGN) | |
8874 | continue; | |
8875 | ||
8876 | if (gimple_num_ops (stmt) == 2) | |
8877 | { | |
8878 | tree arg = gimple_assign_rhs1 (stmt); | |
8879 | ||
8880 | /* We're ignoring the subcode because we're | |
8881 | effectively doing a STRIP_NOPS. */ | |
8882 | ||
8883 | if (TREE_CODE (arg) == ADDR_EXPR | |
8884 | && TREE_OPERAND (arg, 0) == sender) | |
8885 | { | |
8886 | tgtcopy_stmt = stmt; | |
8887 | break; | |
8888 | } | |
8889 | } | |
8890 | } | |
8891 | ||
8892 | gcc_assert (tgtcopy_stmt != NULL); | |
8893 | arg = DECL_ARGUMENTS (child_fn); | |
8894 | ||
8895 | gcc_assert (gimple_assign_lhs (tgtcopy_stmt) == arg); | |
8896 | gsi_remove (&gsi, true); | |
8897 | } | |
8898 | ||
8899 | /* Declare local variables needed in CHILD_CFUN. */ | |
8900 | block = DECL_INITIAL (child_fn); | |
8901 | BLOCK_VARS (block) = vec2chain (child_cfun->local_decls); | |
8902 | /* The gimplifier could record temporaries in the offloading block | |
8903 | rather than in containing function's local_decls chain, | |
8904 | which would mean cgraph missed finalizing them. Do it now. */ | |
8905 | for (t = BLOCK_VARS (block); t; t = DECL_CHAIN (t)) | |
8906 | if (VAR_P (t) && TREE_STATIC (t) && !DECL_EXTERNAL (t)) | |
8907 | varpool_node::finalize_decl (t); | |
8908 | DECL_SAVED_TREE (child_fn) = NULL; | |
8909 | /* We'll create a CFG for child_fn, so no gimple body is needed. */ | |
8910 | gimple_set_body (child_fn, NULL); | |
8911 | TREE_USED (block) = 1; | |
8912 | ||
8913 | /* Reset DECL_CONTEXT on function arguments. */ | |
8914 | for (t = DECL_ARGUMENTS (child_fn); t; t = DECL_CHAIN (t)) | |
8915 | DECL_CONTEXT (t) = child_fn; | |
8916 | ||
8917 | /* Split ENTRY_BB at GIMPLE_*, | |
8918 | so that it can be moved to the child function. */ | |
65f4b875 | 8919 | gsi = gsi_last_nondebug_bb (entry_bb); |
629b3d75 MJ |
8920 | stmt = gsi_stmt (gsi); |
8921 | gcc_assert (stmt | |
8922 | && gimple_code (stmt) == gimple_code (entry_stmt)); | |
8923 | e = split_block (entry_bb, stmt); | |
8924 | gsi_remove (&gsi, true); | |
8925 | entry_bb = e->dest; | |
8926 | single_succ_edge (entry_bb)->flags = EDGE_FALLTHRU; | |
8927 | ||
8928 | /* Convert GIMPLE_OMP_RETURN into a RETURN_EXPR. */ | |
8929 | if (exit_bb) | |
8930 | { | |
65f4b875 | 8931 | gsi = gsi_last_nondebug_bb (exit_bb); |
629b3d75 MJ |
8932 | gcc_assert (!gsi_end_p (gsi) |
8933 | && gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_RETURN); | |
8934 | stmt = gimple_build_return (NULL); | |
8935 | gsi_insert_after (&gsi, stmt, GSI_SAME_STMT); | |
8936 | gsi_remove (&gsi, true); | |
8937 | } | |
8938 | ||
8939 | /* Move the offloading region into CHILD_CFUN. */ | |
8940 | ||
8941 | block = gimple_block (entry_stmt); | |
8942 | ||
8943 | new_bb = move_sese_region_to_fn (child_cfun, entry_bb, exit_bb, block); | |
8944 | if (exit_bb) | |
8945 | single_succ_edge (new_bb)->flags = EDGE_FALLTHRU; | |
8946 | /* When the OMP expansion process cannot guarantee an up-to-date | |
8947 | loop tree arrange for the child function to fixup loops. */ | |
8948 | if (loops_state_satisfies_p (LOOPS_NEED_FIXUP)) | |
8949 | child_cfun->x_current_loops->state |= LOOPS_NEED_FIXUP; | |
8950 | ||
8951 | /* Remove non-local VAR_DECLs from child_cfun->local_decls list. */ | |
8952 | num = vec_safe_length (child_cfun->local_decls); | |
8953 | for (srcidx = 0, dstidx = 0; srcidx < num; srcidx++) | |
8954 | { | |
8955 | t = (*child_cfun->local_decls)[srcidx]; | |
8956 | if (DECL_CONTEXT (t) == cfun->decl) | |
8957 | continue; | |
8958 | if (srcidx != dstidx) | |
8959 | (*child_cfun->local_decls)[dstidx] = t; | |
8960 | dstidx++; | |
8961 | } | |
8962 | if (dstidx != num) | |
8963 | vec_safe_truncate (child_cfun->local_decls, dstidx); | |
8964 | ||
8965 | /* Inform the callgraph about the new function. */ | |
8966 | child_cfun->curr_properties = cfun->curr_properties; | |
8967 | child_cfun->has_simduid_loops |= cfun->has_simduid_loops; | |
8968 | child_cfun->has_force_vectorize_loops |= cfun->has_force_vectorize_loops; | |
8969 | cgraph_node *node = cgraph_node::get_create (child_fn); | |
8970 | node->parallelized_function = 1; | |
8971 | cgraph_node::add_new_function (child_fn, true); | |
8972 | ||
8973 | /* Add the new function to the offload table. */ | |
8974 | if (ENABLE_OFFLOADING) | |
60bf575c TV |
8975 | { |
8976 | if (in_lto_p) | |
8977 | DECL_PRESERVE_P (child_fn) = 1; | |
8978 | vec_safe_push (offload_funcs, child_fn); | |
8979 | } | |
629b3d75 MJ |
8980 | |
8981 | bool need_asm = DECL_ASSEMBLER_NAME_SET_P (current_function_decl) | |
8982 | && !DECL_ASSEMBLER_NAME_SET_P (child_fn); | |
8983 | ||
8984 | /* Fix the callgraph edges for child_cfun. Those for cfun will be | |
8985 | fixed in a following pass. */ | |
8986 | push_cfun (child_cfun); | |
8987 | if (need_asm) | |
9579db35 | 8988 | assign_assembler_name_if_needed (child_fn); |
629b3d75 MJ |
8989 | cgraph_edge::rebuild_edges (); |
8990 | ||
8991 | /* Some EH regions might become dead, see PR34608. If | |
8992 | pass_cleanup_cfg isn't the first pass to happen with the | |
8993 | new child, these dead EH edges might cause problems. | |
8994 | Clean them up now. */ | |
8995 | if (flag_exceptions) | |
8996 | { | |
8997 | basic_block bb; | |
8998 | bool changed = false; | |
8999 | ||
9000 | FOR_EACH_BB_FN (bb, cfun) | |
9001 | changed |= gimple_purge_dead_eh_edges (bb); | |
9002 | if (changed) | |
9003 | cleanup_tree_cfg (); | |
9004 | } | |
9005 | if (flag_checking && !loops_state_satisfies_p (LOOPS_NEED_FIXUP)) | |
9006 | verify_loop_structure (); | |
9007 | pop_cfun (); | |
9008 | ||
9009 | if (dump_file && !gimple_in_ssa_p (cfun)) | |
9010 | { | |
9011 | omp_any_child_fn_dumped = true; | |
9012 | dump_function_header (dump_file, child_fn, dump_flags); | |
9013 | dump_function_to_file (child_fn, dump_file, dump_flags); | |
9014 | } | |
4ccc4e30 JJ |
9015 | |
9016 | adjust_context_and_scope (region, gimple_block (entry_stmt), child_fn); | |
629b3d75 MJ |
9017 | } |
9018 | ||
9019 | /* Emit a library call to launch the offloading region, or do data | |
9020 | transfers. */ | |
59d5960c | 9021 | tree t1, t2, t3, t4, depend, c, clauses; |
629b3d75 | 9022 | enum built_in_function start_ix; |
629b3d75 | 9023 | unsigned int flags_i = 0; |
629b3d75 MJ |
9024 | |
9025 | switch (gimple_omp_target_kind (entry_stmt)) | |
9026 | { | |
9027 | case GF_OMP_TARGET_KIND_REGION: | |
9028 | start_ix = BUILT_IN_GOMP_TARGET; | |
9029 | break; | |
9030 | case GF_OMP_TARGET_KIND_DATA: | |
9031 | start_ix = BUILT_IN_GOMP_TARGET_DATA; | |
9032 | break; | |
9033 | case GF_OMP_TARGET_KIND_UPDATE: | |
9034 | start_ix = BUILT_IN_GOMP_TARGET_UPDATE; | |
9035 | break; | |
9036 | case GF_OMP_TARGET_KIND_ENTER_DATA: | |
9037 | start_ix = BUILT_IN_GOMP_TARGET_ENTER_EXIT_DATA; | |
9038 | break; | |
9039 | case GF_OMP_TARGET_KIND_EXIT_DATA: | |
9040 | start_ix = BUILT_IN_GOMP_TARGET_ENTER_EXIT_DATA; | |
9041 | flags_i |= GOMP_TARGET_FLAG_EXIT_DATA; | |
9042 | break; | |
629b3d75 | 9043 | case GF_OMP_TARGET_KIND_OACC_PARALLEL: |
62aee289 MR |
9044 | case GF_OMP_TARGET_KIND_OACC_KERNELS: |
9045 | case GF_OMP_TARGET_KIND_OACC_SERIAL: | |
629b3d75 MJ |
9046 | start_ix = BUILT_IN_GOACC_PARALLEL; |
9047 | break; | |
9048 | case GF_OMP_TARGET_KIND_OACC_DATA: | |
9049 | case GF_OMP_TARGET_KIND_OACC_HOST_DATA: | |
9050 | start_ix = BUILT_IN_GOACC_DATA_START; | |
9051 | break; | |
9052 | case GF_OMP_TARGET_KIND_OACC_UPDATE: | |
9053 | start_ix = BUILT_IN_GOACC_UPDATE; | |
9054 | break; | |
9055 | case GF_OMP_TARGET_KIND_OACC_ENTER_EXIT_DATA: | |
9056 | start_ix = BUILT_IN_GOACC_ENTER_EXIT_DATA; | |
9057 | break; | |
9058 | case GF_OMP_TARGET_KIND_OACC_DECLARE: | |
9059 | start_ix = BUILT_IN_GOACC_DECLARE; | |
9060 | break; | |
9061 | default: | |
9062 | gcc_unreachable (); | |
9063 | } | |
9064 | ||
9065 | clauses = gimple_omp_target_clauses (entry_stmt); | |
9066 | ||
59d5960c TS |
9067 | tree device = NULL_TREE; |
9068 | location_t device_loc = UNKNOWN_LOCATION; | |
9069 | tree goacc_flags = NULL_TREE; | |
9070 | if (is_gimple_omp_oacc (entry_stmt)) | |
629b3d75 | 9071 | { |
59d5960c TS |
9072 | /* By default, no GOACC_FLAGs are set. */ |
9073 | goacc_flags = integer_zero_node; | |
629b3d75 MJ |
9074 | } |
9075 | else | |
59d5960c TS |
9076 | { |
9077 | c = omp_find_clause (clauses, OMP_CLAUSE_DEVICE); | |
9078 | if (c) | |
9079 | { | |
9080 | device = OMP_CLAUSE_DEVICE_ID (c); | |
9081 | device_loc = OMP_CLAUSE_LOCATION (c); | |
9082 | } | |
9083 | else | |
9084 | { | |
9085 | /* By default, the value of DEVICE is GOMP_DEVICE_ICV (let runtime | |
9086 | library choose). */ | |
9087 | device = build_int_cst (integer_type_node, GOMP_DEVICE_ICV); | |
9088 | device_loc = gimple_location (entry_stmt); | |
9089 | } | |
629b3d75 | 9090 | |
59d5960c TS |
9091 | c = omp_find_clause (clauses, OMP_CLAUSE_NOWAIT); |
9092 | if (c) | |
9093 | flags_i |= GOMP_TARGET_FLAG_NOWAIT; | |
9094 | } | |
629b3d75 | 9095 | |
59d5960c TS |
9096 | /* By default, there is no conditional. */ |
9097 | tree cond = NULL_TREE; | |
9098 | c = omp_find_clause (clauses, OMP_CLAUSE_IF); | |
9099 | if (c) | |
9100 | cond = OMP_CLAUSE_IF_EXPR (c); | |
9101 | /* If we found the clause 'if (cond)', build: | |
9102 | OpenACC: goacc_flags = (cond ? goacc_flags : flags | GOACC_FLAG_HOST_FALLBACK) | |
9103 | OpenMP: device = (cond ? device : GOMP_DEVICE_HOST_FALLBACK) */ | |
629b3d75 MJ |
9104 | if (cond) |
9105 | { | |
59d5960c TS |
9106 | tree *tp; |
9107 | if (is_gimple_omp_oacc (entry_stmt)) | |
9108 | tp = &goacc_flags; | |
9109 | else | |
9110 | { | |
9111 | /* Ensure 'device' is of the correct type. */ | |
9112 | device = fold_convert_loc (device_loc, integer_type_node, device); | |
9113 | ||
9114 | tp = &device; | |
9115 | } | |
9116 | ||
629b3d75 MJ |
9117 | cond = gimple_boolify (cond); |
9118 | ||
9119 | basic_block cond_bb, then_bb, else_bb; | |
9120 | edge e; | |
9121 | tree tmp_var; | |
9122 | ||
59d5960c | 9123 | tmp_var = create_tmp_var (TREE_TYPE (*tp)); |
629b3d75 MJ |
9124 | if (offloaded) |
9125 | e = split_block_after_labels (new_bb); | |
9126 | else | |
9127 | { | |
65f4b875 | 9128 | gsi = gsi_last_nondebug_bb (new_bb); |
629b3d75 MJ |
9129 | gsi_prev (&gsi); |
9130 | e = split_block (new_bb, gsi_stmt (gsi)); | |
9131 | } | |
9132 | cond_bb = e->src; | |
9133 | new_bb = e->dest; | |
9134 | remove_edge (e); | |
9135 | ||
9136 | then_bb = create_empty_bb (cond_bb); | |
9137 | else_bb = create_empty_bb (then_bb); | |
9138 | set_immediate_dominator (CDI_DOMINATORS, then_bb, cond_bb); | |
9139 | set_immediate_dominator (CDI_DOMINATORS, else_bb, cond_bb); | |
9140 | ||
9141 | stmt = gimple_build_cond_empty (cond); | |
9142 | gsi = gsi_last_bb (cond_bb); | |
9143 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); | |
9144 | ||
9145 | gsi = gsi_start_bb (then_bb); | |
59d5960c | 9146 | stmt = gimple_build_assign (tmp_var, *tp); |
629b3d75 MJ |
9147 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); |
9148 | ||
9149 | gsi = gsi_start_bb (else_bb); | |
59d5960c TS |
9150 | if (is_gimple_omp_oacc (entry_stmt)) |
9151 | stmt = gimple_build_assign (tmp_var, | |
9152 | BIT_IOR_EXPR, | |
9153 | *tp, | |
9154 | build_int_cst (integer_type_node, | |
9155 | GOACC_FLAG_HOST_FALLBACK)); | |
9156 | else | |
9157 | stmt = gimple_build_assign (tmp_var, | |
9158 | build_int_cst (integer_type_node, | |
9159 | GOMP_DEVICE_HOST_FALLBACK)); | |
629b3d75 MJ |
9160 | gsi_insert_after (&gsi, stmt, GSI_CONTINUE_LINKING); |
9161 | ||
9162 | make_edge (cond_bb, then_bb, EDGE_TRUE_VALUE); | |
9163 | make_edge (cond_bb, else_bb, EDGE_FALSE_VALUE); | |
9164 | add_bb_to_loop (then_bb, cond_bb->loop_father); | |
9165 | add_bb_to_loop (else_bb, cond_bb->loop_father); | |
9166 | make_edge (then_bb, new_bb, EDGE_FALLTHRU); | |
9167 | make_edge (else_bb, new_bb, EDGE_FALLTHRU); | |
9168 | ||
59d5960c TS |
9169 | *tp = tmp_var; |
9170 | ||
65f4b875 | 9171 | gsi = gsi_last_nondebug_bb (new_bb); |
629b3d75 MJ |
9172 | } |
9173 | else | |
9174 | { | |
65f4b875 | 9175 | gsi = gsi_last_nondebug_bb (new_bb); |
59d5960c TS |
9176 | |
9177 | if (device != NULL_TREE) | |
9178 | device = force_gimple_operand_gsi (&gsi, device, true, NULL_TREE, | |
9179 | true, GSI_SAME_STMT); | |
629b3d75 MJ |
9180 | } |
9181 | ||
9182 | t = gimple_omp_target_data_arg (entry_stmt); | |
9183 | if (t == NULL) | |
9184 | { | |
9185 | t1 = size_zero_node; | |
9186 | t2 = build_zero_cst (ptr_type_node); | |
9187 | t3 = t2; | |
9188 | t4 = t2; | |
9189 | } | |
9190 | else | |
9191 | { | |
9192 | t1 = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (TREE_VEC_ELT (t, 1)))); | |
9193 | t1 = size_binop (PLUS_EXPR, t1, size_int (1)); | |
9194 | t2 = build_fold_addr_expr (TREE_VEC_ELT (t, 0)); | |
9195 | t3 = build_fold_addr_expr (TREE_VEC_ELT (t, 1)); | |
9196 | t4 = build_fold_addr_expr (TREE_VEC_ELT (t, 2)); | |
9197 | } | |
9198 | ||
9199 | gimple *g; | |
9200 | bool tagging = false; | |
9201 | /* The maximum number used by any start_ix, without varargs. */ | |
9202 | auto_vec<tree, 11> args; | |
59d5960c TS |
9203 | if (is_gimple_omp_oacc (entry_stmt)) |
9204 | { | |
9205 | tree goacc_flags_m = fold_build1 (GOACC_FLAGS_MARSHAL_OP, | |
9206 | TREE_TYPE (goacc_flags), goacc_flags); | |
9207 | goacc_flags_m = force_gimple_operand_gsi (&gsi, goacc_flags_m, true, | |
9208 | NULL_TREE, true, | |
9209 | GSI_SAME_STMT); | |
9210 | args.quick_push (goacc_flags_m); | |
9211 | } | |
9212 | else | |
9213 | args.quick_push (device); | |
629b3d75 MJ |
9214 | if (offloaded) |
9215 | args.quick_push (build_fold_addr_expr (child_fn)); | |
9216 | args.quick_push (t1); | |
9217 | args.quick_push (t2); | |
9218 | args.quick_push (t3); | |
9219 | args.quick_push (t4); | |
9220 | switch (start_ix) | |
9221 | { | |
9222 | case BUILT_IN_GOACC_DATA_START: | |
9223 | case BUILT_IN_GOACC_DECLARE: | |
9224 | case BUILT_IN_GOMP_TARGET_DATA: | |
9225 | break; | |
9226 | case BUILT_IN_GOMP_TARGET: | |
9227 | case BUILT_IN_GOMP_TARGET_UPDATE: | |
9228 | case BUILT_IN_GOMP_TARGET_ENTER_EXIT_DATA: | |
9229 | args.quick_push (build_int_cst (unsigned_type_node, flags_i)); | |
9230 | c = omp_find_clause (clauses, OMP_CLAUSE_DEPEND); | |
9231 | if (c) | |
9232 | depend = OMP_CLAUSE_DECL (c); | |
9233 | else | |
9234 | depend = build_int_cst (ptr_type_node, 0); | |
9235 | args.quick_push (depend); | |
9236 | if (start_ix == BUILT_IN_GOMP_TARGET) | |
9237 | args.quick_push (get_target_arguments (&gsi, entry_stmt)); | |
9238 | break; | |
9239 | case BUILT_IN_GOACC_PARALLEL: | |
62aee289 MR |
9240 | if (lookup_attribute ("oacc serial", DECL_ATTRIBUTES (child_fn)) != NULL) |
9241 | { | |
9242 | tree dims = NULL_TREE; | |
9243 | unsigned int ix; | |
9244 | ||
9245 | /* For serial constructs we set all dimensions to 1. */ | |
9246 | for (ix = GOMP_DIM_MAX; ix--;) | |
9247 | dims = tree_cons (NULL_TREE, integer_one_node, dims); | |
9248 | oacc_replace_fn_attrib (child_fn, dims); | |
9249 | } | |
9250 | else | |
9251 | oacc_set_fn_attrib (child_fn, clauses, &args); | |
25651634 | 9252 | tagging = true; |
629b3d75 MJ |
9253 | /* FALLTHRU */ |
9254 | case BUILT_IN_GOACC_ENTER_EXIT_DATA: | |
9255 | case BUILT_IN_GOACC_UPDATE: | |
9256 | { | |
9257 | tree t_async = NULL_TREE; | |
9258 | ||
9259 | /* If present, use the value specified by the respective | |
9260 | clause, making sure that is of the correct type. */ | |
9261 | c = omp_find_clause (clauses, OMP_CLAUSE_ASYNC); | |
9262 | if (c) | |
9263 | t_async = fold_convert_loc (OMP_CLAUSE_LOCATION (c), | |
9264 | integer_type_node, | |
9265 | OMP_CLAUSE_ASYNC_EXPR (c)); | |
9266 | else if (!tagging) | |
9267 | /* Default values for t_async. */ | |
9268 | t_async = fold_convert_loc (gimple_location (entry_stmt), | |
9269 | integer_type_node, | |
9270 | build_int_cst (integer_type_node, | |
9271 | GOMP_ASYNC_SYNC)); | |
9272 | if (tagging && t_async) | |
9273 | { | |
9274 | unsigned HOST_WIDE_INT i_async = GOMP_LAUNCH_OP_MAX; | |
9275 | ||
9276 | if (TREE_CODE (t_async) == INTEGER_CST) | |
9277 | { | |
9278 | /* See if we can pack the async arg in to the tag's | |
9279 | operand. */ | |
9280 | i_async = TREE_INT_CST_LOW (t_async); | |
9281 | if (i_async < GOMP_LAUNCH_OP_MAX) | |
9282 | t_async = NULL_TREE; | |
9283 | else | |
9284 | i_async = GOMP_LAUNCH_OP_MAX; | |
9285 | } | |
9286 | args.safe_push (oacc_launch_pack (GOMP_LAUNCH_ASYNC, NULL_TREE, | |
9287 | i_async)); | |
9288 | } | |
9289 | if (t_async) | |
ee9fcee3 AS |
9290 | args.safe_push (force_gimple_operand_gsi (&gsi, t_async, true, |
9291 | NULL_TREE, true, | |
9292 | GSI_SAME_STMT)); | |
629b3d75 MJ |
9293 | |
9294 | /* Save the argument index, and ... */ | |
9295 | unsigned t_wait_idx = args.length (); | |
9296 | unsigned num_waits = 0; | |
9297 | c = omp_find_clause (clauses, OMP_CLAUSE_WAIT); | |
9298 | if (!tagging || c) | |
9299 | /* ... push a placeholder. */ | |
9300 | args.safe_push (integer_zero_node); | |
9301 | ||
9302 | for (; c; c = OMP_CLAUSE_CHAIN (c)) | |
9303 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_WAIT) | |
9304 | { | |
ee9fcee3 AS |
9305 | tree arg = fold_convert_loc (OMP_CLAUSE_LOCATION (c), |
9306 | integer_type_node, | |
9307 | OMP_CLAUSE_WAIT_EXPR (c)); | |
9308 | arg = force_gimple_operand_gsi (&gsi, arg, true, NULL_TREE, true, | |
9309 | GSI_SAME_STMT); | |
9310 | args.safe_push (arg); | |
629b3d75 MJ |
9311 | num_waits++; |
9312 | } | |
9313 | ||
9314 | if (!tagging || num_waits) | |
9315 | { | |
9316 | tree len; | |
9317 | ||
9318 | /* Now that we know the number, update the placeholder. */ | |
9319 | if (tagging) | |
9320 | len = oacc_launch_pack (GOMP_LAUNCH_WAIT, NULL_TREE, num_waits); | |
9321 | else | |
9322 | len = build_int_cst (integer_type_node, num_waits); | |
9323 | len = fold_convert_loc (gimple_location (entry_stmt), | |
9324 | unsigned_type_node, len); | |
9325 | args[t_wait_idx] = len; | |
9326 | } | |
9327 | } | |
9328 | break; | |
9329 | default: | |
9330 | gcc_unreachable (); | |
9331 | } | |
9332 | if (tagging) | |
9333 | /* Push terminal marker - zero. */ | |
9334 | args.safe_push (oacc_launch_pack (0, NULL_TREE, 0)); | |
9335 | ||
9336 | g = gimple_build_call_vec (builtin_decl_explicit (start_ix), args); | |
9337 | gimple_set_location (g, gimple_location (entry_stmt)); | |
9338 | gsi_insert_before (&gsi, g, GSI_SAME_STMT); | |
9339 | if (!offloaded) | |
9340 | { | |
9341 | g = gsi_stmt (gsi); | |
9342 | gcc_assert (g && gimple_code (g) == GIMPLE_OMP_TARGET); | |
9343 | gsi_remove (&gsi, true); | |
9344 | } | |
9345 | if (data_region && region->exit) | |
9346 | { | |
65f4b875 | 9347 | gsi = gsi_last_nondebug_bb (region->exit); |
629b3d75 MJ |
9348 | g = gsi_stmt (gsi); |
9349 | gcc_assert (g && gimple_code (g) == GIMPLE_OMP_RETURN); | |
9350 | gsi_remove (&gsi, true); | |
9351 | } | |
9352 | } | |
9353 | ||
9354 | /* Expand KFOR loop as a HSA grifidied kernel, i.e. as a body only with | |
9355 | iteration variable derived from the thread number. INTRA_GROUP means this | |
9356 | is an expansion of a loop iterating over work-items within a separate | |
01914336 | 9357 | iteration over groups. */ |
629b3d75 MJ |
9358 | |
9359 | static void | |
9360 | grid_expand_omp_for_loop (struct omp_region *kfor, bool intra_group) | |
9361 | { | |
9362 | gimple_stmt_iterator gsi; | |
9363 | gomp_for *for_stmt = as_a <gomp_for *> (last_stmt (kfor->entry)); | |
9364 | gcc_checking_assert (gimple_omp_for_kind (for_stmt) | |
9365 | == GF_OMP_FOR_KIND_GRID_LOOP); | |
9366 | size_t collapse = gimple_omp_for_collapse (for_stmt); | |
9367 | struct omp_for_data_loop *loops | |
9368 | = XALLOCAVEC (struct omp_for_data_loop, | |
01914336 | 9369 | gimple_omp_for_collapse (for_stmt)); |
629b3d75 MJ |
9370 | struct omp_for_data fd; |
9371 | ||
9372 | remove_edge (BRANCH_EDGE (kfor->entry)); | |
9373 | basic_block body_bb = FALLTHRU_EDGE (kfor->entry)->dest; | |
9374 | ||
9375 | gcc_assert (kfor->cont); | |
9376 | omp_extract_for_data (for_stmt, &fd, loops); | |
9377 | ||
9378 | gsi = gsi_start_bb (body_bb); | |
9379 | ||
9380 | for (size_t dim = 0; dim < collapse; dim++) | |
9381 | { | |
9382 | tree type, itype; | |
9383 | itype = type = TREE_TYPE (fd.loops[dim].v); | |
9384 | if (POINTER_TYPE_P (type)) | |
9385 | itype = signed_type_for (type); | |
9386 | ||
9387 | tree n1 = fd.loops[dim].n1; | |
9388 | tree step = fd.loops[dim].step; | |
9389 | n1 = force_gimple_operand_gsi (&gsi, fold_convert (type, n1), | |
9390 | true, NULL_TREE, true, GSI_SAME_STMT); | |
9391 | step = force_gimple_operand_gsi (&gsi, fold_convert (itype, step), | |
9392 | true, NULL_TREE, true, GSI_SAME_STMT); | |
9393 | tree threadid; | |
9394 | if (gimple_omp_for_grid_group_iter (for_stmt)) | |
9395 | { | |
9396 | gcc_checking_assert (!intra_group); | |
9397 | threadid = build_call_expr (builtin_decl_explicit | |
9398 | (BUILT_IN_HSA_WORKGROUPID), 1, | |
9399 | build_int_cstu (unsigned_type_node, dim)); | |
9400 | } | |
9401 | else if (intra_group) | |
9402 | threadid = build_call_expr (builtin_decl_explicit | |
9403 | (BUILT_IN_HSA_WORKITEMID), 1, | |
9404 | build_int_cstu (unsigned_type_node, dim)); | |
9405 | else | |
9406 | threadid = build_call_expr (builtin_decl_explicit | |
9407 | (BUILT_IN_HSA_WORKITEMABSID), 1, | |
9408 | build_int_cstu (unsigned_type_node, dim)); | |
9409 | threadid = fold_convert (itype, threadid); | |
9410 | threadid = force_gimple_operand_gsi (&gsi, threadid, true, NULL_TREE, | |
9411 | true, GSI_SAME_STMT); | |
9412 | ||
9413 | tree startvar = fd.loops[dim].v; | |
9414 | tree t = fold_build2 (MULT_EXPR, itype, threadid, step); | |
9415 | if (POINTER_TYPE_P (type)) | |
9416 | t = fold_build_pointer_plus (n1, t); | |
9417 | else | |
9418 | t = fold_build2 (PLUS_EXPR, type, t, n1); | |
9419 | t = fold_convert (type, t); | |
9420 | t = force_gimple_operand_gsi (&gsi, t, | |
9421 | DECL_P (startvar) | |
9422 | && TREE_ADDRESSABLE (startvar), | |
9423 | NULL_TREE, true, GSI_SAME_STMT); | |
9424 | gassign *assign_stmt = gimple_build_assign (startvar, t); | |
9425 | gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT); | |
9426 | } | |
01914336 | 9427 | /* Remove the omp for statement. */ |
65f4b875 | 9428 | gsi = gsi_last_nondebug_bb (kfor->entry); |
629b3d75 MJ |
9429 | gsi_remove (&gsi, true); |
9430 | ||
9431 | /* Remove the GIMPLE_OMP_CONTINUE statement. */ | |
65f4b875 | 9432 | gsi = gsi_last_nondebug_bb (kfor->cont); |
629b3d75 MJ |
9433 | gcc_assert (!gsi_end_p (gsi) |
9434 | && gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_CONTINUE); | |
9435 | gsi_remove (&gsi, true); | |
9436 | ||
9437 | /* Replace the GIMPLE_OMP_RETURN with a barrier, if necessary. */ | |
65f4b875 | 9438 | gsi = gsi_last_nondebug_bb (kfor->exit); |
629b3d75 MJ |
9439 | gcc_assert (!gsi_end_p (gsi) |
9440 | && gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_RETURN); | |
9441 | if (intra_group) | |
9442 | gsi_insert_before (&gsi, omp_build_barrier (NULL_TREE), GSI_SAME_STMT); | |
9443 | gsi_remove (&gsi, true); | |
9444 | ||
9445 | /* Fixup the much simpler CFG. */ | |
9446 | remove_edge (find_edge (kfor->cont, body_bb)); | |
9447 | ||
9448 | if (kfor->cont != body_bb) | |
9449 | set_immediate_dominator (CDI_DOMINATORS, kfor->cont, body_bb); | |
9450 | set_immediate_dominator (CDI_DOMINATORS, kfor->exit, kfor->cont); | |
9451 | } | |
9452 | ||
9453 | /* Structure passed to grid_remap_kernel_arg_accesses so that it can remap | |
9454 | argument_decls. */ | |
9455 | ||
9456 | struct grid_arg_decl_map | |
9457 | { | |
9458 | tree old_arg; | |
9459 | tree new_arg; | |
9460 | }; | |
9461 | ||
9462 | /* Invoked through walk_gimple_op, will remap all PARM_DECLs to the ones | |
9463 | pertaining to kernel function. */ | |
9464 | ||
9465 | static tree | |
9466 | grid_remap_kernel_arg_accesses (tree *tp, int *walk_subtrees, void *data) | |
9467 | { | |
9468 | struct walk_stmt_info *wi = (struct walk_stmt_info *) data; | |
9469 | struct grid_arg_decl_map *adm = (struct grid_arg_decl_map *) wi->info; | |
9470 | tree t = *tp; | |
9471 | ||
9472 | if (t == adm->old_arg) | |
9473 | *tp = adm->new_arg; | |
9474 | *walk_subtrees = !TYPE_P (t) && !DECL_P (t); | |
9475 | return NULL_TREE; | |
9476 | } | |
9477 | ||
9478 | /* If TARGET region contains a kernel body for loop, remove its region from the | |
01914336 | 9479 | TARGET and expand it in HSA gridified kernel fashion. */ |
629b3d75 MJ |
9480 | |
9481 | static void | |
9482 | grid_expand_target_grid_body (struct omp_region *target) | |
9483 | { | |
9484 | if (!hsa_gen_requested_p ()) | |
9485 | return; | |
9486 | ||
9487 | gomp_target *tgt_stmt = as_a <gomp_target *> (last_stmt (target->entry)); | |
9488 | struct omp_region **pp; | |
9489 | ||
9490 | for (pp = &target->inner; *pp; pp = &(*pp)->next) | |
9491 | if ((*pp)->type == GIMPLE_OMP_GRID_BODY) | |
9492 | break; | |
9493 | ||
9494 | struct omp_region *gpukernel = *pp; | |
9495 | ||
9496 | tree orig_child_fndecl = gimple_omp_target_child_fn (tgt_stmt); | |
9497 | if (!gpukernel) | |
9498 | { | |
9499 | /* HSA cannot handle OACC stuff. */ | |
9500 | if (gimple_omp_target_kind (tgt_stmt) != GF_OMP_TARGET_KIND_REGION) | |
9501 | return; | |
9502 | gcc_checking_assert (orig_child_fndecl); | |
9503 | gcc_assert (!omp_find_clause (gimple_omp_target_clauses (tgt_stmt), | |
9504 | OMP_CLAUSE__GRIDDIM_)); | |
9505 | cgraph_node *n = cgraph_node::get (orig_child_fndecl); | |
9506 | ||
9507 | hsa_register_kernel (n); | |
9508 | return; | |
9509 | } | |
9510 | ||
9511 | gcc_assert (omp_find_clause (gimple_omp_target_clauses (tgt_stmt), | |
9512 | OMP_CLAUSE__GRIDDIM_)); | |
01914336 MJ |
9513 | tree inside_block |
9514 | = gimple_block (first_stmt (single_succ (gpukernel->entry))); | |
629b3d75 MJ |
9515 | *pp = gpukernel->next; |
9516 | for (pp = &gpukernel->inner; *pp; pp = &(*pp)->next) | |
9517 | if ((*pp)->type == GIMPLE_OMP_FOR) | |
9518 | break; | |
9519 | ||
9520 | struct omp_region *kfor = *pp; | |
9521 | gcc_assert (kfor); | |
9522 | gomp_for *for_stmt = as_a <gomp_for *> (last_stmt (kfor->entry)); | |
9523 | gcc_assert (gimple_omp_for_kind (for_stmt) == GF_OMP_FOR_KIND_GRID_LOOP); | |
9524 | *pp = kfor->next; | |
9525 | if (kfor->inner) | |
9526 | { | |
9527 | if (gimple_omp_for_grid_group_iter (for_stmt)) | |
9528 | { | |
9529 | struct omp_region **next_pp; | |
9530 | for (pp = &kfor->inner; *pp; pp = next_pp) | |
9531 | { | |
9532 | next_pp = &(*pp)->next; | |
9533 | if ((*pp)->type != GIMPLE_OMP_FOR) | |
9534 | continue; | |
9535 | gomp_for *inner = as_a <gomp_for *> (last_stmt ((*pp)->entry)); | |
9536 | gcc_assert (gimple_omp_for_kind (inner) | |
9537 | == GF_OMP_FOR_KIND_GRID_LOOP); | |
9538 | grid_expand_omp_for_loop (*pp, true); | |
9539 | *pp = (*pp)->next; | |
9540 | next_pp = pp; | |
9541 | } | |
9542 | } | |
9543 | expand_omp (kfor->inner); | |
9544 | } | |
9545 | if (gpukernel->inner) | |
9546 | expand_omp (gpukernel->inner); | |
9547 | ||
9548 | tree kern_fndecl = copy_node (orig_child_fndecl); | |
7958186b MP |
9549 | DECL_NAME (kern_fndecl) = clone_function_name_numbered (kern_fndecl, |
9550 | "kernel"); | |
629b3d75 MJ |
9551 | SET_DECL_ASSEMBLER_NAME (kern_fndecl, DECL_NAME (kern_fndecl)); |
9552 | tree tgtblock = gimple_block (tgt_stmt); | |
9553 | tree fniniblock = make_node (BLOCK); | |
dc16b007 | 9554 | BLOCK_ABSTRACT_ORIGIN (fniniblock) = BLOCK_ORIGIN (tgtblock); |
629b3d75 MJ |
9555 | BLOCK_SOURCE_LOCATION (fniniblock) = BLOCK_SOURCE_LOCATION (tgtblock); |
9556 | BLOCK_SOURCE_END_LOCATION (fniniblock) = BLOCK_SOURCE_END_LOCATION (tgtblock); | |
9557 | BLOCK_SUPERCONTEXT (fniniblock) = kern_fndecl; | |
9558 | DECL_INITIAL (kern_fndecl) = fniniblock; | |
9559 | push_struct_function (kern_fndecl); | |
9560 | cfun->function_end_locus = gimple_location (tgt_stmt); | |
9561 | init_tree_ssa (cfun); | |
9562 | pop_cfun (); | |
9563 | ||
9564 | tree old_parm_decl = DECL_ARGUMENTS (kern_fndecl); | |
9565 | gcc_assert (!DECL_CHAIN (old_parm_decl)); | |
9566 | tree new_parm_decl = copy_node (DECL_ARGUMENTS (kern_fndecl)); | |
9567 | DECL_CONTEXT (new_parm_decl) = kern_fndecl; | |
9568 | DECL_ARGUMENTS (kern_fndecl) = new_parm_decl; | |
9569 | gcc_assert (VOID_TYPE_P (TREE_TYPE (DECL_RESULT (kern_fndecl)))); | |
9570 | DECL_RESULT (kern_fndecl) = copy_node (DECL_RESULT (kern_fndecl)); | |
9571 | DECL_CONTEXT (DECL_RESULT (kern_fndecl)) = kern_fndecl; | |
9572 | struct function *kern_cfun = DECL_STRUCT_FUNCTION (kern_fndecl); | |
9573 | kern_cfun->curr_properties = cfun->curr_properties; | |
9574 | ||
9575 | grid_expand_omp_for_loop (kfor, false); | |
9576 | ||
01914336 | 9577 | /* Remove the omp for statement. */ |
65f4b875 | 9578 | gimple_stmt_iterator gsi = gsi_last_nondebug_bb (gpukernel->entry); |
629b3d75 MJ |
9579 | gsi_remove (&gsi, true); |
9580 | /* Replace the GIMPLE_OMP_RETURN at the end of the kernel region with a real | |
9581 | return. */ | |
65f4b875 | 9582 | gsi = gsi_last_nondebug_bb (gpukernel->exit); |
629b3d75 MJ |
9583 | gcc_assert (!gsi_end_p (gsi) |
9584 | && gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_RETURN); | |
9585 | gimple *ret_stmt = gimple_build_return (NULL); | |
9586 | gsi_insert_after (&gsi, ret_stmt, GSI_SAME_STMT); | |
9587 | gsi_remove (&gsi, true); | |
9588 | ||
9589 | /* Statements in the first BB in the target construct have been produced by | |
9590 | target lowering and must be copied inside the GPUKERNEL, with the two | |
9591 | exceptions of the first OMP statement and the OMP_DATA assignment | |
9592 | statement. */ | |
9593 | gsi = gsi_start_bb (single_succ (gpukernel->entry)); | |
9594 | tree data_arg = gimple_omp_target_data_arg (tgt_stmt); | |
9595 | tree sender = data_arg ? TREE_VEC_ELT (data_arg, 0) : NULL; | |
9596 | for (gimple_stmt_iterator tsi = gsi_start_bb (single_succ (target->entry)); | |
9597 | !gsi_end_p (tsi); gsi_next (&tsi)) | |
9598 | { | |
9599 | gimple *stmt = gsi_stmt (tsi); | |
9600 | if (is_gimple_omp (stmt)) | |
9601 | break; | |
9602 | if (sender | |
9603 | && is_gimple_assign (stmt) | |
9604 | && TREE_CODE (gimple_assign_rhs1 (stmt)) == ADDR_EXPR | |
9605 | && TREE_OPERAND (gimple_assign_rhs1 (stmt), 0) == sender) | |
9606 | continue; | |
9607 | gimple *copy = gimple_copy (stmt); | |
9608 | gsi_insert_before (&gsi, copy, GSI_SAME_STMT); | |
9609 | gimple_set_block (copy, fniniblock); | |
9610 | } | |
9611 | ||
9612 | move_sese_region_to_fn (kern_cfun, single_succ (gpukernel->entry), | |
9613 | gpukernel->exit, inside_block); | |
9614 | ||
9615 | cgraph_node *kcn = cgraph_node::get_create (kern_fndecl); | |
9616 | kcn->mark_force_output (); | |
9617 | cgraph_node *orig_child = cgraph_node::get (orig_child_fndecl); | |
9618 | ||
9619 | hsa_register_kernel (kcn, orig_child); | |
9620 | ||
9621 | cgraph_node::add_new_function (kern_fndecl, true); | |
9622 | push_cfun (kern_cfun); | |
9623 | cgraph_edge::rebuild_edges (); | |
9624 | ||
9625 | /* Re-map any mention of the PARM_DECL of the original function to the | |
9626 | PARM_DECL of the new one. | |
9627 | ||
9628 | TODO: It would be great if lowering produced references into the GPU | |
9629 | kernel decl straight away and we did not have to do this. */ | |
9630 | struct grid_arg_decl_map adm; | |
9631 | adm.old_arg = old_parm_decl; | |
9632 | adm.new_arg = new_parm_decl; | |
9633 | basic_block bb; | |
9634 | FOR_EACH_BB_FN (bb, kern_cfun) | |
9635 | { | |
9636 | for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi)) | |
9637 | { | |
9638 | gimple *stmt = gsi_stmt (gsi); | |
9639 | struct walk_stmt_info wi; | |
9640 | memset (&wi, 0, sizeof (wi)); | |
9641 | wi.info = &adm; | |
9642 | walk_gimple_op (stmt, grid_remap_kernel_arg_accesses, &wi); | |
9643 | } | |
9644 | } | |
9645 | pop_cfun (); | |
9646 | ||
9647 | return; | |
9648 | } | |
9649 | ||
9650 | /* Expand the parallel region tree rooted at REGION. Expansion | |
9651 | proceeds in depth-first order. Innermost regions are expanded | |
9652 | first. This way, parallel regions that require a new function to | |
9653 | be created (e.g., GIMPLE_OMP_PARALLEL) can be expanded without having any | |
9654 | internal dependencies in their body. */ | |
9655 | ||
9656 | static void | |
9657 | expand_omp (struct omp_region *region) | |
9658 | { | |
9659 | omp_any_child_fn_dumped = false; | |
9660 | while (region) | |
9661 | { | |
9662 | location_t saved_location; | |
9663 | gimple *inner_stmt = NULL; | |
9664 | ||
9665 | /* First, determine whether this is a combined parallel+workshare | |
01914336 | 9666 | region. */ |
629b3d75 MJ |
9667 | if (region->type == GIMPLE_OMP_PARALLEL) |
9668 | determine_parallel_type (region); | |
9669 | else if (region->type == GIMPLE_OMP_TARGET) | |
9670 | grid_expand_target_grid_body (region); | |
9671 | ||
9672 | if (region->type == GIMPLE_OMP_FOR | |
9673 | && gimple_omp_for_combined_p (last_stmt (region->entry))) | |
9674 | inner_stmt = last_stmt (region->inner->entry); | |
9675 | ||
9676 | if (region->inner) | |
9677 | expand_omp (region->inner); | |
9678 | ||
9679 | saved_location = input_location; | |
9680 | if (gimple_has_location (last_stmt (region->entry))) | |
9681 | input_location = gimple_location (last_stmt (region->entry)); | |
9682 | ||
9683 | switch (region->type) | |
9684 | { | |
9685 | case GIMPLE_OMP_PARALLEL: | |
9686 | case GIMPLE_OMP_TASK: | |
9687 | expand_omp_taskreg (region); | |
9688 | break; | |
9689 | ||
9690 | case GIMPLE_OMP_FOR: | |
9691 | expand_omp_for (region, inner_stmt); | |
9692 | break; | |
9693 | ||
9694 | case GIMPLE_OMP_SECTIONS: | |
9695 | expand_omp_sections (region); | |
9696 | break; | |
9697 | ||
9698 | case GIMPLE_OMP_SECTION: | |
9699 | /* Individual omp sections are handled together with their | |
9700 | parent GIMPLE_OMP_SECTIONS region. */ | |
9701 | break; | |
9702 | ||
9703 | case GIMPLE_OMP_SINGLE: | |
9704 | expand_omp_single (region); | |
9705 | break; | |
9706 | ||
9707 | case GIMPLE_OMP_ORDERED: | |
9708 | { | |
9709 | gomp_ordered *ord_stmt | |
9710 | = as_a <gomp_ordered *> (last_stmt (region->entry)); | |
9711 | if (omp_find_clause (gimple_omp_ordered_clauses (ord_stmt), | |
9712 | OMP_CLAUSE_DEPEND)) | |
9713 | { | |
9714 | /* We'll expand these when expanding corresponding | |
9715 | worksharing region with ordered(n) clause. */ | |
9716 | gcc_assert (region->outer | |
9717 | && region->outer->type == GIMPLE_OMP_FOR); | |
9718 | region->ord_stmt = ord_stmt; | |
9719 | break; | |
9720 | } | |
9721 | } | |
9722 | /* FALLTHRU */ | |
9723 | case GIMPLE_OMP_MASTER: | |
9724 | case GIMPLE_OMP_TASKGROUP: | |
9725 | case GIMPLE_OMP_CRITICAL: | |
9726 | case GIMPLE_OMP_TEAMS: | |
9727 | expand_omp_synch (region); | |
9728 | break; | |
9729 | ||
9730 | case GIMPLE_OMP_ATOMIC_LOAD: | |
9731 | expand_omp_atomic (region); | |
9732 | break; | |
9733 | ||
9734 | case GIMPLE_OMP_TARGET: | |
9735 | expand_omp_target (region); | |
9736 | break; | |
9737 | ||
9738 | default: | |
9739 | gcc_unreachable (); | |
9740 | } | |
9741 | ||
9742 | input_location = saved_location; | |
9743 | region = region->next; | |
9744 | } | |
9745 | if (omp_any_child_fn_dumped) | |
9746 | { | |
9747 | if (dump_file) | |
9748 | dump_function_header (dump_file, current_function_decl, dump_flags); | |
9749 | omp_any_child_fn_dumped = false; | |
9750 | } | |
9751 | } | |
9752 | ||
9753 | /* Helper for build_omp_regions. Scan the dominator tree starting at | |
9754 | block BB. PARENT is the region that contains BB. If SINGLE_TREE is | |
9755 | true, the function ends once a single tree is built (otherwise, whole | |
9756 | forest of OMP constructs may be built). */ | |
9757 | ||
9758 | static void | |
9759 | build_omp_regions_1 (basic_block bb, struct omp_region *parent, | |
9760 | bool single_tree) | |
9761 | { | |
9762 | gimple_stmt_iterator gsi; | |
9763 | gimple *stmt; | |
9764 | basic_block son; | |
9765 | ||
65f4b875 | 9766 | gsi = gsi_last_nondebug_bb (bb); |
629b3d75 MJ |
9767 | if (!gsi_end_p (gsi) && is_gimple_omp (gsi_stmt (gsi))) |
9768 | { | |
9769 | struct omp_region *region; | |
9770 | enum gimple_code code; | |
9771 | ||
9772 | stmt = gsi_stmt (gsi); | |
9773 | code = gimple_code (stmt); | |
9774 | if (code == GIMPLE_OMP_RETURN) | |
9775 | { | |
9776 | /* STMT is the return point out of region PARENT. Mark it | |
9777 | as the exit point and make PARENT the immediately | |
9778 | enclosing region. */ | |
9779 | gcc_assert (parent); | |
9780 | region = parent; | |
9781 | region->exit = bb; | |
9782 | parent = parent->outer; | |
9783 | } | |
9784 | else if (code == GIMPLE_OMP_ATOMIC_STORE) | |
9785 | { | |
5764ee3c | 9786 | /* GIMPLE_OMP_ATOMIC_STORE is analogous to |
629b3d75 MJ |
9787 | GIMPLE_OMP_RETURN, but matches with |
9788 | GIMPLE_OMP_ATOMIC_LOAD. */ | |
9789 | gcc_assert (parent); | |
9790 | gcc_assert (parent->type == GIMPLE_OMP_ATOMIC_LOAD); | |
9791 | region = parent; | |
9792 | region->exit = bb; | |
9793 | parent = parent->outer; | |
9794 | } | |
9795 | else if (code == GIMPLE_OMP_CONTINUE) | |
9796 | { | |
9797 | gcc_assert (parent); | |
9798 | parent->cont = bb; | |
9799 | } | |
9800 | else if (code == GIMPLE_OMP_SECTIONS_SWITCH) | |
9801 | { | |
9802 | /* GIMPLE_OMP_SECTIONS_SWITCH is part of | |
9803 | GIMPLE_OMP_SECTIONS, and we do nothing for it. */ | |
9804 | } | |
9805 | else | |
9806 | { | |
9807 | region = new_omp_region (bb, code, parent); | |
9808 | /* Otherwise... */ | |
9809 | if (code == GIMPLE_OMP_TARGET) | |
9810 | { | |
9811 | switch (gimple_omp_target_kind (stmt)) | |
9812 | { | |
9813 | case GF_OMP_TARGET_KIND_REGION: | |
9814 | case GF_OMP_TARGET_KIND_DATA: | |
9815 | case GF_OMP_TARGET_KIND_OACC_PARALLEL: | |
9816 | case GF_OMP_TARGET_KIND_OACC_KERNELS: | |
62aee289 | 9817 | case GF_OMP_TARGET_KIND_OACC_SERIAL: |
629b3d75 MJ |
9818 | case GF_OMP_TARGET_KIND_OACC_DATA: |
9819 | case GF_OMP_TARGET_KIND_OACC_HOST_DATA: | |
9820 | break; | |
9821 | case GF_OMP_TARGET_KIND_UPDATE: | |
9822 | case GF_OMP_TARGET_KIND_ENTER_DATA: | |
9823 | case GF_OMP_TARGET_KIND_EXIT_DATA: | |
9824 | case GF_OMP_TARGET_KIND_OACC_UPDATE: | |
9825 | case GF_OMP_TARGET_KIND_OACC_ENTER_EXIT_DATA: | |
9826 | case GF_OMP_TARGET_KIND_OACC_DECLARE: | |
9827 | /* ..., other than for those stand-alone directives... */ | |
9828 | region = NULL; | |
9829 | break; | |
9830 | default: | |
9831 | gcc_unreachable (); | |
9832 | } | |
9833 | } | |
9834 | else if (code == GIMPLE_OMP_ORDERED | |
9835 | && omp_find_clause (gimple_omp_ordered_clauses | |
9836 | (as_a <gomp_ordered *> (stmt)), | |
9837 | OMP_CLAUSE_DEPEND)) | |
9838 | /* #pragma omp ordered depend is also just a stand-alone | |
9839 | directive. */ | |
9840 | region = NULL; | |
28567c40 JJ |
9841 | else if (code == GIMPLE_OMP_TASK |
9842 | && gimple_omp_task_taskwait_p (stmt)) | |
9843 | /* #pragma omp taskwait depend(...) is a stand-alone directive. */ | |
9844 | region = NULL; | |
629b3d75 MJ |
9845 | /* ..., this directive becomes the parent for a new region. */ |
9846 | if (region) | |
9847 | parent = region; | |
9848 | } | |
9849 | } | |
9850 | ||
9851 | if (single_tree && !parent) | |
9852 | return; | |
9853 | ||
9854 | for (son = first_dom_son (CDI_DOMINATORS, bb); | |
9855 | son; | |
9856 | son = next_dom_son (CDI_DOMINATORS, son)) | |
9857 | build_omp_regions_1 (son, parent, single_tree); | |
9858 | } | |
9859 | ||
9860 | /* Builds the tree of OMP regions rooted at ROOT, storing it to | |
9861 | root_omp_region. */ | |
9862 | ||
9863 | static void | |
9864 | build_omp_regions_root (basic_block root) | |
9865 | { | |
9866 | gcc_assert (root_omp_region == NULL); | |
9867 | build_omp_regions_1 (root, NULL, true); | |
9868 | gcc_assert (root_omp_region != NULL); | |
9869 | } | |
9870 | ||
9871 | /* Expands omp construct (and its subconstructs) starting in HEAD. */ | |
9872 | ||
9873 | void | |
9874 | omp_expand_local (basic_block head) | |
9875 | { | |
9876 | build_omp_regions_root (head); | |
9877 | if (dump_file && (dump_flags & TDF_DETAILS)) | |
9878 | { | |
9879 | fprintf (dump_file, "\nOMP region tree\n\n"); | |
9880 | dump_omp_region (dump_file, root_omp_region, 0); | |
9881 | fprintf (dump_file, "\n"); | |
9882 | } | |
9883 | ||
9884 | remove_exit_barriers (root_omp_region); | |
9885 | expand_omp (root_omp_region); | |
9886 | ||
9887 | omp_free_regions (); | |
9888 | } | |
9889 | ||
9890 | /* Scan the CFG and build a tree of OMP regions. Return the root of | |
9891 | the OMP region tree. */ | |
9892 | ||
9893 | static void | |
9894 | build_omp_regions (void) | |
9895 | { | |
9896 | gcc_assert (root_omp_region == NULL); | |
9897 | calculate_dominance_info (CDI_DOMINATORS); | |
9898 | build_omp_regions_1 (ENTRY_BLOCK_PTR_FOR_FN (cfun), NULL, false); | |
9899 | } | |
9900 | ||
9901 | /* Main entry point for expanding OMP-GIMPLE into runtime calls. */ | |
9902 | ||
9903 | static unsigned int | |
9904 | execute_expand_omp (void) | |
9905 | { | |
9906 | build_omp_regions (); | |
9907 | ||
9908 | if (!root_omp_region) | |
9909 | return 0; | |
9910 | ||
9911 | if (dump_file) | |
9912 | { | |
9913 | fprintf (dump_file, "\nOMP region tree\n\n"); | |
9914 | dump_omp_region (dump_file, root_omp_region, 0); | |
9915 | fprintf (dump_file, "\n"); | |
9916 | } | |
9917 | ||
9918 | remove_exit_barriers (root_omp_region); | |
9919 | ||
9920 | expand_omp (root_omp_region); | |
9921 | ||
9922 | if (flag_checking && !loops_state_satisfies_p (LOOPS_NEED_FIXUP)) | |
9923 | verify_loop_structure (); | |
9924 | cleanup_tree_cfg (); | |
9925 | ||
9926 | omp_free_regions (); | |
9927 | ||
9928 | return 0; | |
9929 | } | |
9930 | ||
9931 | /* OMP expansion -- the default pass, run before creation of SSA form. */ | |
9932 | ||
9933 | namespace { | |
9934 | ||
9935 | const pass_data pass_data_expand_omp = | |
9936 | { | |
9937 | GIMPLE_PASS, /* type */ | |
9938 | "ompexp", /* name */ | |
fd2b8c8b | 9939 | OPTGROUP_OMP, /* optinfo_flags */ |
629b3d75 MJ |
9940 | TV_NONE, /* tv_id */ |
9941 | PROP_gimple_any, /* properties_required */ | |
9942 | PROP_gimple_eomp, /* properties_provided */ | |
9943 | 0, /* properties_destroyed */ | |
9944 | 0, /* todo_flags_start */ | |
9945 | 0, /* todo_flags_finish */ | |
9946 | }; | |
9947 | ||
9948 | class pass_expand_omp : public gimple_opt_pass | |
9949 | { | |
9950 | public: | |
9951 | pass_expand_omp (gcc::context *ctxt) | |
9952 | : gimple_opt_pass (pass_data_expand_omp, ctxt) | |
9953 | {} | |
9954 | ||
9955 | /* opt_pass methods: */ | |
9956 | virtual unsigned int execute (function *) | |
9957 | { | |
5e9d6aa4 | 9958 | bool gate = ((flag_openacc != 0 || flag_openmp != 0 |
629b3d75 MJ |
9959 | || flag_openmp_simd != 0) |
9960 | && !seen_error ()); | |
9961 | ||
9962 | /* This pass always runs, to provide PROP_gimple_eomp. | |
9963 | But often, there is nothing to do. */ | |
9964 | if (!gate) | |
9965 | return 0; | |
9966 | ||
9967 | return execute_expand_omp (); | |
9968 | } | |
9969 | ||
9970 | }; // class pass_expand_omp | |
9971 | ||
9972 | } // anon namespace | |
9973 | ||
9974 | gimple_opt_pass * | |
9975 | make_pass_expand_omp (gcc::context *ctxt) | |
9976 | { | |
9977 | return new pass_expand_omp (ctxt); | |
9978 | } | |
9979 | ||
9980 | namespace { | |
9981 | ||
9982 | const pass_data pass_data_expand_omp_ssa = | |
9983 | { | |
9984 | GIMPLE_PASS, /* type */ | |
9985 | "ompexpssa", /* name */ | |
fd2b8c8b | 9986 | OPTGROUP_OMP, /* optinfo_flags */ |
629b3d75 MJ |
9987 | TV_NONE, /* tv_id */ |
9988 | PROP_cfg | PROP_ssa, /* properties_required */ | |
9989 | PROP_gimple_eomp, /* properties_provided */ | |
9990 | 0, /* properties_destroyed */ | |
9991 | 0, /* todo_flags_start */ | |
9992 | TODO_cleanup_cfg | TODO_rebuild_alias, /* todo_flags_finish */ | |
9993 | }; | |
9994 | ||
9995 | class pass_expand_omp_ssa : public gimple_opt_pass | |
9996 | { | |
9997 | public: | |
9998 | pass_expand_omp_ssa (gcc::context *ctxt) | |
9999 | : gimple_opt_pass (pass_data_expand_omp_ssa, ctxt) | |
10000 | {} | |
10001 | ||
10002 | /* opt_pass methods: */ | |
10003 | virtual bool gate (function *fun) | |
10004 | { | |
10005 | return !(fun->curr_properties & PROP_gimple_eomp); | |
10006 | } | |
10007 | virtual unsigned int execute (function *) { return execute_expand_omp (); } | |
10008 | opt_pass * clone () { return new pass_expand_omp_ssa (m_ctxt); } | |
10009 | ||
10010 | }; // class pass_expand_omp_ssa | |
10011 | ||
10012 | } // anon namespace | |
10013 | ||
10014 | gimple_opt_pass * | |
10015 | make_pass_expand_omp_ssa (gcc::context *ctxt) | |
10016 | { | |
10017 | return new pass_expand_omp_ssa (ctxt); | |
10018 | } | |
10019 | ||
10020 | /* Called from tree-cfg.c::make_edges to create cfg edges for all relevant | |
10021 | GIMPLE_* codes. */ | |
10022 | ||
10023 | bool | |
10024 | omp_make_gimple_edges (basic_block bb, struct omp_region **region, | |
10025 | int *region_idx) | |
10026 | { | |
10027 | gimple *last = last_stmt (bb); | |
10028 | enum gimple_code code = gimple_code (last); | |
10029 | struct omp_region *cur_region = *region; | |
10030 | bool fallthru = false; | |
10031 | ||
10032 | switch (code) | |
10033 | { | |
10034 | case GIMPLE_OMP_PARALLEL: | |
629b3d75 MJ |
10035 | case GIMPLE_OMP_FOR: |
10036 | case GIMPLE_OMP_SINGLE: | |
10037 | case GIMPLE_OMP_TEAMS: | |
10038 | case GIMPLE_OMP_MASTER: | |
10039 | case GIMPLE_OMP_TASKGROUP: | |
10040 | case GIMPLE_OMP_CRITICAL: | |
10041 | case GIMPLE_OMP_SECTION: | |
10042 | case GIMPLE_OMP_GRID_BODY: | |
10043 | cur_region = new_omp_region (bb, code, cur_region); | |
10044 | fallthru = true; | |
10045 | break; | |
10046 | ||
28567c40 JJ |
10047 | case GIMPLE_OMP_TASK: |
10048 | cur_region = new_omp_region (bb, code, cur_region); | |
10049 | fallthru = true; | |
10050 | if (gimple_omp_task_taskwait_p (last)) | |
10051 | cur_region = cur_region->outer; | |
10052 | break; | |
10053 | ||
629b3d75 MJ |
10054 | case GIMPLE_OMP_ORDERED: |
10055 | cur_region = new_omp_region (bb, code, cur_region); | |
10056 | fallthru = true; | |
10057 | if (omp_find_clause (gimple_omp_ordered_clauses | |
10058 | (as_a <gomp_ordered *> (last)), | |
10059 | OMP_CLAUSE_DEPEND)) | |
10060 | cur_region = cur_region->outer; | |
10061 | break; | |
10062 | ||
10063 | case GIMPLE_OMP_TARGET: | |
10064 | cur_region = new_omp_region (bb, code, cur_region); | |
10065 | fallthru = true; | |
10066 | switch (gimple_omp_target_kind (last)) | |
10067 | { | |
10068 | case GF_OMP_TARGET_KIND_REGION: | |
10069 | case GF_OMP_TARGET_KIND_DATA: | |
10070 | case GF_OMP_TARGET_KIND_OACC_PARALLEL: | |
10071 | case GF_OMP_TARGET_KIND_OACC_KERNELS: | |
62aee289 | 10072 | case GF_OMP_TARGET_KIND_OACC_SERIAL: |
629b3d75 MJ |
10073 | case GF_OMP_TARGET_KIND_OACC_DATA: |
10074 | case GF_OMP_TARGET_KIND_OACC_HOST_DATA: | |
10075 | break; | |
10076 | case GF_OMP_TARGET_KIND_UPDATE: | |
10077 | case GF_OMP_TARGET_KIND_ENTER_DATA: | |
10078 | case GF_OMP_TARGET_KIND_EXIT_DATA: | |
10079 | case GF_OMP_TARGET_KIND_OACC_UPDATE: | |
10080 | case GF_OMP_TARGET_KIND_OACC_ENTER_EXIT_DATA: | |
10081 | case GF_OMP_TARGET_KIND_OACC_DECLARE: | |
10082 | cur_region = cur_region->outer; | |
10083 | break; | |
10084 | default: | |
10085 | gcc_unreachable (); | |
10086 | } | |
10087 | break; | |
10088 | ||
10089 | case GIMPLE_OMP_SECTIONS: | |
10090 | cur_region = new_omp_region (bb, code, cur_region); | |
10091 | fallthru = true; | |
10092 | break; | |
10093 | ||
10094 | case GIMPLE_OMP_SECTIONS_SWITCH: | |
10095 | fallthru = false; | |
10096 | break; | |
10097 | ||
10098 | case GIMPLE_OMP_ATOMIC_LOAD: | |
10099 | case GIMPLE_OMP_ATOMIC_STORE: | |
10100 | fallthru = true; | |
10101 | break; | |
10102 | ||
10103 | case GIMPLE_OMP_RETURN: | |
10104 | /* In the case of a GIMPLE_OMP_SECTION, the edge will go | |
10105 | somewhere other than the next block. This will be | |
10106 | created later. */ | |
10107 | cur_region->exit = bb; | |
10108 | if (cur_region->type == GIMPLE_OMP_TASK) | |
10109 | /* Add an edge corresponding to not scheduling the task | |
10110 | immediately. */ | |
10111 | make_edge (cur_region->entry, bb, EDGE_ABNORMAL); | |
10112 | fallthru = cur_region->type != GIMPLE_OMP_SECTION; | |
10113 | cur_region = cur_region->outer; | |
10114 | break; | |
10115 | ||
10116 | case GIMPLE_OMP_CONTINUE: | |
10117 | cur_region->cont = bb; | |
10118 | switch (cur_region->type) | |
10119 | { | |
10120 | case GIMPLE_OMP_FOR: | |
10121 | /* Mark all GIMPLE_OMP_FOR and GIMPLE_OMP_CONTINUE | |
10122 | succs edges as abnormal to prevent splitting | |
10123 | them. */ | |
10124 | single_succ_edge (cur_region->entry)->flags |= EDGE_ABNORMAL; | |
10125 | /* Make the loopback edge. */ | |
10126 | make_edge (bb, single_succ (cur_region->entry), | |
10127 | EDGE_ABNORMAL); | |
10128 | ||
10129 | /* Create an edge from GIMPLE_OMP_FOR to exit, which | |
10130 | corresponds to the case that the body of the loop | |
10131 | is not executed at all. */ | |
10132 | make_edge (cur_region->entry, bb->next_bb, EDGE_ABNORMAL); | |
10133 | make_edge (bb, bb->next_bb, EDGE_FALLTHRU | EDGE_ABNORMAL); | |
10134 | fallthru = false; | |
10135 | break; | |
10136 | ||
10137 | case GIMPLE_OMP_SECTIONS: | |
10138 | /* Wire up the edges into and out of the nested sections. */ | |
10139 | { | |
10140 | basic_block switch_bb = single_succ (cur_region->entry); | |
10141 | ||
10142 | struct omp_region *i; | |
10143 | for (i = cur_region->inner; i ; i = i->next) | |
10144 | { | |
10145 | gcc_assert (i->type == GIMPLE_OMP_SECTION); | |
10146 | make_edge (switch_bb, i->entry, 0); | |
10147 | make_edge (i->exit, bb, EDGE_FALLTHRU); | |
10148 | } | |
10149 | ||
10150 | /* Make the loopback edge to the block with | |
10151 | GIMPLE_OMP_SECTIONS_SWITCH. */ | |
10152 | make_edge (bb, switch_bb, 0); | |
10153 | ||
10154 | /* Make the edge from the switch to exit. */ | |
10155 | make_edge (switch_bb, bb->next_bb, 0); | |
10156 | fallthru = false; | |
10157 | } | |
10158 | break; | |
10159 | ||
10160 | case GIMPLE_OMP_TASK: | |
10161 | fallthru = true; | |
10162 | break; | |
10163 | ||
10164 | default: | |
10165 | gcc_unreachable (); | |
10166 | } | |
10167 | break; | |
10168 | ||
10169 | default: | |
10170 | gcc_unreachable (); | |
10171 | } | |
10172 | ||
10173 | if (*region != cur_region) | |
10174 | { | |
10175 | *region = cur_region; | |
10176 | if (cur_region) | |
10177 | *region_idx = cur_region->entry->index; | |
10178 | else | |
10179 | *region_idx = 0; | |
10180 | } | |
10181 | ||
10182 | return fallthru; | |
10183 | } | |
10184 | ||
10185 | #include "gt-omp-expand.h" |