0
|
1 /* Loop optimizations over tree-ssa.
|
|
2 Copyright (C) 2003, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
|
|
3
|
|
4 This file is part of GCC.
|
|
5
|
|
6 GCC is free software; you can redistribute it and/or modify it
|
|
7 under the terms of the GNU General Public License as published by the
|
|
8 Free Software Foundation; either version 3, or (at your option) any
|
|
9 later version.
|
|
10
|
|
11 GCC is distributed in the hope that it will be useful, but WITHOUT
|
|
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
14 for more details.
|
|
15
|
|
16 You should have received a copy of the GNU General Public License
|
|
17 along with GCC; see the file COPYING3. If not see
|
|
18 <http://www.gnu.org/licenses/>. */
|
|
19
|
|
20 #include "config.h"
|
|
21 #include "system.h"
|
|
22 #include "coretypes.h"
|
|
23 #include "tm.h"
|
|
24 #include "tree.h"
|
|
25 #include "rtl.h"
|
|
26 #include "tm_p.h"
|
|
27 #include "hard-reg-set.h"
|
|
28 #include "basic-block.h"
|
|
29 #include "output.h"
|
|
30 #include "diagnostic.h"
|
|
31 #include "tree-flow.h"
|
|
32 #include "tree-dump.h"
|
|
33 #include "tree-pass.h"
|
|
34 #include "timevar.h"
|
|
35 #include "cfgloop.h"
|
|
36 #include "flags.h"
|
|
37 #include "tree-inline.h"
|
|
38 #include "tree-scalar-evolution.h"
|
|
39
|
|
40 /* The loop superpass. */
|
|
41
|
|
42 static bool
|
|
43 gate_tree_loop (void)
|
|
44 {
|
|
45 return flag_tree_loop_optimize != 0;
|
|
46 }
|
|
47
|
|
48 struct gimple_opt_pass pass_tree_loop =
|
|
49 {
|
|
50 {
|
|
51 GIMPLE_PASS,
|
|
52 "loop", /* name */
|
|
53 gate_tree_loop, /* gate */
|
|
54 NULL, /* execute */
|
|
55 NULL, /* sub */
|
|
56 NULL, /* next */
|
|
57 0, /* static_pass_number */
|
|
58 TV_TREE_LOOP, /* tv_id */
|
|
59 PROP_cfg, /* properties_required */
|
|
60 0, /* properties_provided */
|
|
61 0, /* properties_destroyed */
|
|
62 TODO_ggc_collect, /* todo_flags_start */
|
|
63 TODO_dump_func | TODO_verify_ssa | TODO_ggc_collect /* todo_flags_finish */
|
|
64 }
|
|
65 };
|
|
66
|
|
67 /* Loop optimizer initialization. */
|
|
68
|
|
69 static unsigned int
|
|
70 tree_ssa_loop_init (void)
|
|
71 {
|
|
72 loop_optimizer_init (LOOPS_NORMAL
|
|
73 | LOOPS_HAVE_RECORDED_EXITS);
|
|
74 rewrite_into_loop_closed_ssa (NULL, TODO_update_ssa);
|
|
75
|
|
76 if (number_of_loops () <= 1)
|
|
77 return 0;
|
|
78
|
|
79 scev_initialize ();
|
|
80 return 0;
|
|
81 }
|
|
82
|
|
83 struct gimple_opt_pass pass_tree_loop_init =
|
|
84 {
|
|
85 {
|
|
86 GIMPLE_PASS,
|
|
87 "loopinit", /* name */
|
|
88 NULL, /* gate */
|
|
89 tree_ssa_loop_init, /* execute */
|
|
90 NULL, /* sub */
|
|
91 NULL, /* next */
|
|
92 0, /* static_pass_number */
|
|
93 TV_TREE_LOOP_INIT, /* tv_id */
|
|
94 PROP_cfg, /* properties_required */
|
|
95 0, /* properties_provided */
|
|
96 0, /* properties_destroyed */
|
|
97 0, /* todo_flags_start */
|
|
98 TODO_dump_func | TODO_verify_loops /* todo_flags_finish */
|
|
99 }
|
|
100 };
|
|
101
|
|
102 /* Loop invariant motion pass. */
|
|
103
|
|
104 static unsigned int
|
|
105 tree_ssa_loop_im (void)
|
|
106 {
|
|
107 if (number_of_loops () <= 1)
|
|
108 return 0;
|
|
109
|
|
110 tree_ssa_lim ();
|
|
111 return 0;
|
|
112 }
|
|
113
|
|
114 static bool
|
|
115 gate_tree_ssa_loop_im (void)
|
|
116 {
|
|
117 return flag_tree_loop_im != 0;
|
|
118 }
|
|
119
|
|
120 struct gimple_opt_pass pass_lim =
|
|
121 {
|
|
122 {
|
|
123 GIMPLE_PASS,
|
|
124 "lim", /* name */
|
|
125 gate_tree_ssa_loop_im, /* gate */
|
|
126 tree_ssa_loop_im, /* execute */
|
|
127 NULL, /* sub */
|
|
128 NULL, /* next */
|
|
129 0, /* static_pass_number */
|
|
130 TV_LIM, /* tv_id */
|
|
131 PROP_cfg, /* properties_required */
|
|
132 0, /* properties_provided */
|
|
133 0, /* properties_destroyed */
|
|
134 0, /* todo_flags_start */
|
|
135 TODO_dump_func | TODO_verify_loops /* todo_flags_finish */
|
|
136 }
|
|
137 };
|
|
138
|
|
139 /* Loop unswitching pass. */
|
|
140
|
|
141 static unsigned int
|
|
142 tree_ssa_loop_unswitch (void)
|
|
143 {
|
|
144 if (number_of_loops () <= 1)
|
|
145 return 0;
|
|
146
|
|
147 return tree_ssa_unswitch_loops ();
|
|
148 }
|
|
149
|
|
150 static bool
|
|
151 gate_tree_ssa_loop_unswitch (void)
|
|
152 {
|
|
153 return flag_unswitch_loops != 0;
|
|
154 }
|
|
155
|
|
156 struct gimple_opt_pass pass_tree_unswitch =
|
|
157 {
|
|
158 {
|
|
159 GIMPLE_PASS,
|
|
160 "unswitch", /* name */
|
|
161 gate_tree_ssa_loop_unswitch, /* gate */
|
|
162 tree_ssa_loop_unswitch, /* execute */
|
|
163 NULL, /* sub */
|
|
164 NULL, /* next */
|
|
165 0, /* static_pass_number */
|
|
166 TV_TREE_LOOP_UNSWITCH, /* tv_id */
|
|
167 PROP_cfg, /* properties_required */
|
|
168 0, /* properties_provided */
|
|
169 0, /* properties_destroyed */
|
|
170 0, /* todo_flags_start */
|
|
171 TODO_ggc_collect | TODO_dump_func
|
|
172 | TODO_verify_loops /* todo_flags_finish */
|
|
173 }
|
|
174 };
|
|
175
|
|
176 /* Predictive commoning. */
|
|
177
|
|
178 static unsigned
|
|
179 run_tree_predictive_commoning (void)
|
|
180 {
|
|
181 if (!current_loops)
|
|
182 return 0;
|
|
183
|
|
184 tree_predictive_commoning ();
|
|
185 return 0;
|
|
186 }
|
|
187
|
|
188 static bool
|
|
189 gate_tree_predictive_commoning (void)
|
|
190 {
|
|
191 return flag_predictive_commoning != 0;
|
|
192 }
|
|
193
|
|
194 struct gimple_opt_pass pass_predcom =
|
|
195 {
|
|
196 {
|
|
197 GIMPLE_PASS,
|
|
198 "pcom", /* name */
|
|
199 gate_tree_predictive_commoning, /* gate */
|
|
200 run_tree_predictive_commoning, /* execute */
|
|
201 NULL, /* sub */
|
|
202 NULL, /* next */
|
|
203 0, /* static_pass_number */
|
|
204 TV_PREDCOM, /* tv_id */
|
|
205 PROP_cfg, /* properties_required */
|
|
206 0, /* properties_provided */
|
|
207 0, /* properties_destroyed */
|
|
208 0, /* todo_flags_start */
|
|
209 TODO_dump_func | TODO_verify_loops
|
|
210 | TODO_update_ssa_only_virtuals /* todo_flags_finish */
|
|
211 }
|
|
212 };
|
|
213
|
|
214 /* Loop autovectorization. */
|
|
215
|
|
216 static unsigned int
|
|
217 tree_vectorize (void)
|
|
218 {
|
|
219 if (number_of_loops () <= 1)
|
|
220 return 0;
|
|
221
|
|
222 return vectorize_loops ();
|
|
223 }
|
|
224
|
|
225 static bool
|
|
226 gate_tree_vectorize (void)
|
|
227 {
|
|
228 return flag_tree_vectorize;
|
|
229 }
|
|
230
|
|
231 struct gimple_opt_pass pass_vectorize =
|
|
232 {
|
|
233 {
|
|
234 GIMPLE_PASS,
|
|
235 "vect", /* name */
|
|
236 gate_tree_vectorize, /* gate */
|
|
237 tree_vectorize, /* execute */
|
|
238 NULL, /* sub */
|
|
239 NULL, /* next */
|
|
240 0, /* static_pass_number */
|
|
241 TV_TREE_VECTORIZATION, /* tv_id */
|
|
242 PROP_cfg | PROP_ssa, /* properties_required */
|
|
243 0, /* properties_provided */
|
|
244 0, /* properties_destroyed */
|
|
245 TODO_verify_loops, /* todo_flags_start */
|
|
246 TODO_dump_func | TODO_update_ssa
|
|
247 | TODO_ggc_collect /* todo_flags_finish */
|
|
248 }
|
|
249 };
|
|
250
|
|
251 /* Loop nest optimizations. */
|
|
252
|
|
253 static unsigned int
|
|
254 tree_linear_transform (void)
|
|
255 {
|
|
256 if (number_of_loops () <= 1)
|
|
257 return 0;
|
|
258
|
|
259 linear_transform_loops ();
|
|
260 return 0;
|
|
261 }
|
|
262
|
|
263 static bool
|
|
264 gate_tree_linear_transform (void)
|
|
265 {
|
|
266 return flag_tree_loop_linear != 0;
|
|
267 }
|
|
268
|
|
269 struct gimple_opt_pass pass_linear_transform =
|
|
270 {
|
|
271 {
|
|
272 GIMPLE_PASS,
|
|
273 "ltrans", /* name */
|
|
274 gate_tree_linear_transform, /* gate */
|
|
275 tree_linear_transform, /* execute */
|
|
276 NULL, /* sub */
|
|
277 NULL, /* next */
|
|
278 0, /* static_pass_number */
|
|
279 TV_TREE_LINEAR_TRANSFORM, /* tv_id */
|
|
280 PROP_cfg | PROP_ssa, /* properties_required */
|
|
281 0, /* properties_provided */
|
|
282 0, /* properties_destroyed */
|
|
283 0, /* todo_flags_start */
|
|
284 TODO_dump_func | TODO_verify_loops
|
|
285 | TODO_update_ssa_only_virtuals
|
|
286 | TODO_ggc_collect /* todo_flags_finish */
|
|
287 }
|
|
288 };
|
|
289
|
|
290 /* GRAPHITE optimizations. */
|
|
291
|
|
292 static unsigned int
|
|
293 graphite_transforms (void)
|
|
294 {
|
|
295 if (!current_loops)
|
|
296 return 0;
|
|
297
|
|
298 graphite_transform_loops ();
|
|
299
|
|
300 return 0;
|
|
301 }
|
|
302
|
|
303 static bool
|
|
304 gate_graphite_transforms (void)
|
|
305 {
|
|
306 /* Enable -fgraphite pass if any one of the graphite optimization flags
|
|
307 is turned on. */
|
|
308 if (flag_loop_block || flag_loop_interchange || flag_loop_strip_mine
|
|
309 || flag_graphite_identity)
|
|
310 flag_graphite = 1;
|
|
311
|
|
312 return flag_graphite != 0;
|
|
313 }
|
|
314
|
|
315 struct gimple_opt_pass pass_graphite_transforms =
|
|
316 {
|
|
317 {
|
|
318 GIMPLE_PASS,
|
|
319 "graphite", /* name */
|
|
320 gate_graphite_transforms, /* gate */
|
|
321 graphite_transforms, /* execute */
|
|
322 NULL, /* sub */
|
|
323 NULL, /* next */
|
|
324 0, /* static_pass_number */
|
|
325 TV_GRAPHITE_TRANSFORMS, /* tv_id */
|
|
326 PROP_cfg | PROP_ssa, /* properties_required */
|
|
327 0, /* properties_provided */
|
|
328 0, /* properties_destroyed */
|
|
329 0, /* todo_flags_start */
|
|
330 TODO_verify_loops /* todo_flags_finish */
|
|
331 }
|
|
332 };
|
|
333
|
|
334 /* Check the correctness of the data dependence analyzers. */
|
|
335
|
|
336 static unsigned int
|
|
337 check_data_deps (void)
|
|
338 {
|
|
339 if (number_of_loops () <= 1)
|
|
340 return 0;
|
|
341
|
|
342 tree_check_data_deps ();
|
|
343 return 0;
|
|
344 }
|
|
345
|
|
346 static bool
|
|
347 gate_check_data_deps (void)
|
|
348 {
|
|
349 return flag_check_data_deps != 0;
|
|
350 }
|
|
351
|
|
352 struct gimple_opt_pass pass_check_data_deps =
|
|
353 {
|
|
354 {
|
|
355 GIMPLE_PASS,
|
|
356 "ckdd", /* name */
|
|
357 gate_check_data_deps, /* gate */
|
|
358 check_data_deps, /* execute */
|
|
359 NULL, /* sub */
|
|
360 NULL, /* next */
|
|
361 0, /* static_pass_number */
|
|
362 TV_CHECK_DATA_DEPS, /* tv_id */
|
|
363 PROP_cfg | PROP_ssa, /* properties_required */
|
|
364 0, /* properties_provided */
|
|
365 0, /* properties_destroyed */
|
|
366 0, /* todo_flags_start */
|
|
367 TODO_dump_func /* todo_flags_finish */
|
|
368 }
|
|
369 };
|
|
370
|
|
371 /* Canonical induction variable creation pass. */
|
|
372
|
|
373 static unsigned int
|
|
374 tree_ssa_loop_ivcanon (void)
|
|
375 {
|
|
376 if (number_of_loops () <= 1)
|
|
377 return 0;
|
|
378
|
|
379 return canonicalize_induction_variables ();
|
|
380 }
|
|
381
|
|
382 static bool
|
|
383 gate_tree_ssa_loop_ivcanon (void)
|
|
384 {
|
|
385 return flag_tree_loop_ivcanon != 0;
|
|
386 }
|
|
387
|
|
388 struct gimple_opt_pass pass_iv_canon =
|
|
389 {
|
|
390 {
|
|
391 GIMPLE_PASS,
|
|
392 "ivcanon", /* name */
|
|
393 gate_tree_ssa_loop_ivcanon, /* gate */
|
|
394 tree_ssa_loop_ivcanon, /* execute */
|
|
395 NULL, /* sub */
|
|
396 NULL, /* next */
|
|
397 0, /* static_pass_number */
|
|
398 TV_TREE_LOOP_IVCANON, /* tv_id */
|
|
399 PROP_cfg | PROP_ssa, /* properties_required */
|
|
400 0, /* properties_provided */
|
|
401 0, /* properties_destroyed */
|
|
402 0, /* todo_flags_start */
|
|
403 TODO_dump_func | TODO_verify_loops /* todo_flags_finish */
|
|
404 }
|
|
405 };
|
|
406
|
|
407 /* Propagation of constants using scev. */
|
|
408
|
|
409 static bool
|
|
410 gate_scev_const_prop (void)
|
|
411 {
|
|
412 return flag_tree_scev_cprop;
|
|
413 }
|
|
414
|
|
415 struct gimple_opt_pass pass_scev_cprop =
|
|
416 {
|
|
417 {
|
|
418 GIMPLE_PASS,
|
|
419 "sccp", /* name */
|
|
420 gate_scev_const_prop, /* gate */
|
|
421 scev_const_prop, /* execute */
|
|
422 NULL, /* sub */
|
|
423 NULL, /* next */
|
|
424 0, /* static_pass_number */
|
|
425 TV_SCEV_CONST, /* tv_id */
|
|
426 PROP_cfg | PROP_ssa, /* properties_required */
|
|
427 0, /* properties_provided */
|
|
428 0, /* properties_destroyed */
|
|
429 0, /* todo_flags_start */
|
|
430 TODO_dump_func | TODO_cleanup_cfg
|
|
431 | TODO_update_ssa_only_virtuals
|
|
432 /* todo_flags_finish */
|
|
433 }
|
|
434 };
|
|
435
|
|
436 /* Remove empty loops. */
|
|
437
|
|
438 static unsigned int
|
|
439 tree_ssa_empty_loop (void)
|
|
440 {
|
|
441 if (number_of_loops () <= 1)
|
|
442 return 0;
|
|
443
|
|
444 return remove_empty_loops ();
|
|
445 }
|
|
446
|
|
447 struct gimple_opt_pass pass_empty_loop =
|
|
448 {
|
|
449 {
|
|
450 GIMPLE_PASS,
|
|
451 "empty", /* name */
|
|
452 NULL, /* gate */
|
|
453 tree_ssa_empty_loop, /* execute */
|
|
454 NULL, /* sub */
|
|
455 NULL, /* next */
|
|
456 0, /* static_pass_number */
|
|
457 TV_COMPLETE_UNROLL, /* tv_id */
|
|
458 PROP_cfg | PROP_ssa, /* properties_required */
|
|
459 0, /* properties_provided */
|
|
460 0, /* properties_destroyed */
|
|
461 0, /* todo_flags_start */
|
|
462 TODO_dump_func | TODO_verify_loops
|
|
463 | TODO_ggc_collect /* todo_flags_finish */
|
|
464 }
|
|
465 };
|
|
466
|
|
467 /* Record bounds on numbers of iterations of loops. */
|
|
468
|
|
469 static unsigned int
|
|
470 tree_ssa_loop_bounds (void)
|
|
471 {
|
|
472 if (number_of_loops () <= 1)
|
|
473 return 0;
|
|
474
|
|
475 estimate_numbers_of_iterations ();
|
|
476 scev_reset ();
|
|
477 return 0;
|
|
478 }
|
|
479
|
|
480 struct gimple_opt_pass pass_record_bounds =
|
|
481 {
|
|
482 {
|
|
483 GIMPLE_PASS,
|
|
484 NULL, /* name */
|
|
485 NULL, /* gate */
|
|
486 tree_ssa_loop_bounds, /* execute */
|
|
487 NULL, /* sub */
|
|
488 NULL, /* next */
|
|
489 0, /* static_pass_number */
|
|
490 TV_TREE_LOOP_BOUNDS, /* tv_id */
|
|
491 PROP_cfg | PROP_ssa, /* properties_required */
|
|
492 0, /* properties_provided */
|
|
493 0, /* properties_destroyed */
|
|
494 0, /* todo_flags_start */
|
|
495 0 /* todo_flags_finish */
|
|
496 }
|
|
497 };
|
|
498
|
|
499 /* Complete unrolling of loops. */
|
|
500
|
|
501 static unsigned int
|
|
502 tree_complete_unroll (void)
|
|
503 {
|
|
504 if (number_of_loops () <= 1)
|
|
505 return 0;
|
|
506
|
|
507 return tree_unroll_loops_completely (flag_unroll_loops
|
|
508 || flag_peel_loops
|
|
509 || optimize >= 3, true);
|
|
510 }
|
|
511
|
|
512 static bool
|
|
513 gate_tree_complete_unroll (void)
|
|
514 {
|
|
515 return true;
|
|
516 }
|
|
517
|
|
518 struct gimple_opt_pass pass_complete_unroll =
|
|
519 {
|
|
520 {
|
|
521 GIMPLE_PASS,
|
|
522 "cunroll", /* name */
|
|
523 gate_tree_complete_unroll, /* gate */
|
|
524 tree_complete_unroll, /* execute */
|
|
525 NULL, /* sub */
|
|
526 NULL, /* next */
|
|
527 0, /* static_pass_number */
|
|
528 TV_COMPLETE_UNROLL, /* tv_id */
|
|
529 PROP_cfg | PROP_ssa, /* properties_required */
|
|
530 0, /* properties_provided */
|
|
531 0, /* properties_destroyed */
|
|
532 0, /* todo_flags_start */
|
|
533 TODO_dump_func | TODO_verify_loops
|
|
534 | TODO_ggc_collect /* todo_flags_finish */
|
|
535 }
|
|
536 };
|
|
537
|
|
538 /* Complete unrolling of inner loops. */
|
|
539
|
|
540 static unsigned int
|
|
541 tree_complete_unroll_inner (void)
|
|
542 {
|
|
543 unsigned ret = 0;
|
|
544
|
|
545 loop_optimizer_init (LOOPS_NORMAL
|
|
546 | LOOPS_HAVE_RECORDED_EXITS);
|
|
547 if (number_of_loops () > 1)
|
|
548 {
|
|
549 scev_initialize ();
|
|
550 ret = tree_unroll_loops_completely (optimize >= 3, false);
|
|
551 free_numbers_of_iterations_estimates ();
|
|
552 scev_finalize ();
|
|
553 }
|
|
554 loop_optimizer_finalize ();
|
|
555
|
|
556 return ret;
|
|
557 }
|
|
558
|
|
559 static bool
|
|
560 gate_tree_complete_unroll_inner (void)
|
|
561 {
|
|
562 return optimize >= 2;
|
|
563 }
|
|
564
|
|
565 struct gimple_opt_pass pass_complete_unrolli =
|
|
566 {
|
|
567 {
|
|
568 GIMPLE_PASS,
|
|
569 "cunrolli", /* name */
|
|
570 gate_tree_complete_unroll_inner, /* gate */
|
|
571 tree_complete_unroll_inner, /* execute */
|
|
572 NULL, /* sub */
|
|
573 NULL, /* next */
|
|
574 0, /* static_pass_number */
|
|
575 TV_COMPLETE_UNROLL, /* tv_id */
|
|
576 PROP_cfg | PROP_ssa, /* properties_required */
|
|
577 0, /* properties_provided */
|
|
578 0, /* properties_destroyed */
|
|
579 0, /* todo_flags_start */
|
|
580 TODO_dump_func | TODO_verify_loops
|
|
581 | TODO_ggc_collect /* todo_flags_finish */
|
|
582 }
|
|
583 };
|
|
584
|
|
585 /* Parallelization. */
|
|
586
|
|
587 static bool
|
|
588 gate_tree_parallelize_loops (void)
|
|
589 {
|
|
590 return flag_tree_parallelize_loops > 1;
|
|
591 }
|
|
592
|
|
593 static unsigned
|
|
594 tree_parallelize_loops (void)
|
|
595 {
|
|
596 if (number_of_loops () <= 1)
|
|
597 return 0;
|
|
598
|
|
599 if (parallelize_loops ())
|
|
600 return TODO_cleanup_cfg | TODO_rebuild_alias;
|
|
601 return 0;
|
|
602 }
|
|
603
|
|
604 struct gimple_opt_pass pass_parallelize_loops =
|
|
605 {
|
|
606 {
|
|
607 GIMPLE_PASS,
|
|
608 "parloops", /* name */
|
|
609 gate_tree_parallelize_loops, /* gate */
|
|
610 tree_parallelize_loops, /* execute */
|
|
611 NULL, /* sub */
|
|
612 NULL, /* next */
|
|
613 0, /* static_pass_number */
|
|
614 TV_TREE_PARALLELIZE_LOOPS, /* tv_id */
|
|
615 PROP_cfg | PROP_ssa, /* properties_required */
|
|
616 0, /* properties_provided */
|
|
617 0, /* properties_destroyed */
|
|
618 0, /* todo_flags_start */
|
|
619 TODO_dump_func | TODO_verify_loops /* todo_flags_finish */
|
|
620 }
|
|
621 };
|
|
622
|
|
623 /* Prefetching. */
|
|
624
|
|
625 static unsigned int
|
|
626 tree_ssa_loop_prefetch (void)
|
|
627 {
|
|
628 if (number_of_loops () <= 1)
|
|
629 return 0;
|
|
630
|
|
631 return tree_ssa_prefetch_arrays ();
|
|
632 }
|
|
633
|
|
634 static bool
|
|
635 gate_tree_ssa_loop_prefetch (void)
|
|
636 {
|
|
637 return flag_prefetch_loop_arrays != 0;
|
|
638 }
|
|
639
|
|
640 struct gimple_opt_pass pass_loop_prefetch =
|
|
641 {
|
|
642 {
|
|
643 GIMPLE_PASS,
|
|
644 "aprefetch", /* name */
|
|
645 gate_tree_ssa_loop_prefetch, /* gate */
|
|
646 tree_ssa_loop_prefetch, /* execute */
|
|
647 NULL, /* sub */
|
|
648 NULL, /* next */
|
|
649 0, /* static_pass_number */
|
|
650 TV_TREE_PREFETCH, /* tv_id */
|
|
651 PROP_cfg | PROP_ssa, /* properties_required */
|
|
652 0, /* properties_provided */
|
|
653 0, /* properties_destroyed */
|
|
654 0, /* todo_flags_start */
|
|
655 TODO_dump_func | TODO_verify_loops /* todo_flags_finish */
|
|
656 }
|
|
657 };
|
|
658
|
|
659 /* Induction variable optimizations. */
|
|
660
|
|
661 static unsigned int
|
|
662 tree_ssa_loop_ivopts (void)
|
|
663 {
|
|
664 if (number_of_loops () <= 1)
|
|
665 return 0;
|
|
666
|
|
667 tree_ssa_iv_optimize ();
|
|
668 return 0;
|
|
669 }
|
|
670
|
|
671 static bool
|
|
672 gate_tree_ssa_loop_ivopts (void)
|
|
673 {
|
|
674 return flag_ivopts != 0;
|
|
675 }
|
|
676
|
|
677 struct gimple_opt_pass pass_iv_optimize =
|
|
678 {
|
|
679 {
|
|
680 GIMPLE_PASS,
|
|
681 "ivopts", /* name */
|
|
682 gate_tree_ssa_loop_ivopts, /* gate */
|
|
683 tree_ssa_loop_ivopts, /* execute */
|
|
684 NULL, /* sub */
|
|
685 NULL, /* next */
|
|
686 0, /* static_pass_number */
|
|
687 TV_TREE_LOOP_IVOPTS, /* tv_id */
|
|
688 PROP_cfg | PROP_ssa, /* properties_required */
|
|
689 0, /* properties_provided */
|
|
690 0, /* properties_destroyed */
|
|
691 0, /* todo_flags_start */
|
|
692 TODO_dump_func | TODO_verify_loops
|
|
693 | TODO_update_ssa | TODO_ggc_collect /* todo_flags_finish */
|
|
694 }
|
|
695 };
|
|
696
|
|
697 /* Loop optimizer finalization. */
|
|
698
|
|
699 static unsigned int
|
|
700 tree_ssa_loop_done (void)
|
|
701 {
|
|
702 free_numbers_of_iterations_estimates ();
|
|
703 scev_finalize ();
|
|
704 loop_optimizer_finalize ();
|
|
705 return 0;
|
|
706 }
|
|
707
|
|
708 struct gimple_opt_pass pass_tree_loop_done =
|
|
709 {
|
|
710 {
|
|
711 GIMPLE_PASS,
|
|
712 "loopdone", /* name */
|
|
713 NULL, /* gate */
|
|
714 tree_ssa_loop_done, /* execute */
|
|
715 NULL, /* sub */
|
|
716 NULL, /* next */
|
|
717 0, /* static_pass_number */
|
|
718 TV_TREE_LOOP_FINI, /* tv_id */
|
|
719 PROP_cfg, /* properties_required */
|
|
720 0, /* properties_provided */
|
|
721 0, /* properties_destroyed */
|
|
722 0, /* todo_flags_start */
|
|
723 TODO_cleanup_cfg | TODO_dump_func /* todo_flags_finish */
|
|
724 }
|
|
725 };
|