Mercurial > hg > CbC > CbC_gcc
annotate gcc/tree-ssa-loop.c @ 108:7ad14f446135
add CbC-example/rectypeTest/
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Thu, 14 Jun 2012 20:30:24 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Loop optimizations over tree-ssa. |
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2 Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010 |
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3 Free Software Foundation, Inc. |
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4 |
| 0 | 5 This file is part of GCC. |
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6 |
| 0 | 7 GCC is free software; you can redistribute it and/or modify it |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 3, or (at your option) any | |
| 10 later version. | |
|
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11 |
| 0 | 12 GCC is distributed in the hope that it will be useful, but WITHOUT |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
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16 |
| 0 | 17 You should have received a copy of the GNU General Public License |
| 18 along with GCC; see the file COPYING3. If not see | |
| 19 <http://www.gnu.org/licenses/>. */ | |
| 20 | |
| 21 #include "config.h" | |
| 22 #include "system.h" | |
| 23 #include "coretypes.h" | |
| 24 #include "tm.h" | |
| 25 #include "tree.h" | |
| 26 #include "tm_p.h" | |
| 27 #include "basic-block.h" | |
| 28 #include "output.h" | |
| 29 #include "tree-flow.h" | |
| 30 #include "tree-dump.h" | |
| 31 #include "tree-pass.h" | |
| 32 #include "timevar.h" | |
| 33 #include "cfgloop.h" | |
| 34 #include "flags.h" | |
| 35 #include "tree-inline.h" | |
| 36 #include "tree-scalar-evolution.h" | |
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37 #include "diagnostic-core.h" |
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38 #include "tree-vectorizer.h" |
| 0 | 39 |
| 40 /* The loop superpass. */ | |
| 41 | |
| 42 static bool | |
| 43 gate_tree_loop (void) | |
| 44 { | |
| 45 return flag_tree_loop_optimize != 0; | |
| 46 } | |
| 47 | |
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48 struct gimple_opt_pass pass_tree_loop = |
| 0 | 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 } | |
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82 |
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83 struct gimple_opt_pass pass_tree_loop_init = |
| 0 | 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 */ | |
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98 TODO_dump_func /* todo_flags_finish */ |
| 0 | 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 | |
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110 return tree_ssa_lim (); |
| 0 | 111 } |
| 112 | |
| 113 static bool | |
| 114 gate_tree_ssa_loop_im (void) | |
| 115 { | |
| 116 return flag_tree_loop_im != 0; | |
| 117 } | |
| 118 | |
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119 struct gimple_opt_pass pass_lim = |
| 0 | 120 { |
| 121 { | |
| 122 GIMPLE_PASS, | |
| 123 "lim", /* name */ | |
| 124 gate_tree_ssa_loop_im, /* gate */ | |
| 125 tree_ssa_loop_im, /* execute */ | |
| 126 NULL, /* sub */ | |
| 127 NULL, /* next */ | |
| 128 0, /* static_pass_number */ | |
| 129 TV_LIM, /* tv_id */ | |
| 130 PROP_cfg, /* properties_required */ | |
| 131 0, /* properties_provided */ | |
| 132 0, /* properties_destroyed */ | |
| 133 0, /* todo_flags_start */ | |
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134 TODO_dump_func /* todo_flags_finish */ |
| 0 | 135 } |
| 136 }; | |
| 137 | |
| 138 /* Loop unswitching pass. */ | |
| 139 | |
| 140 static unsigned int | |
| 141 tree_ssa_loop_unswitch (void) | |
| 142 { | |
| 143 if (number_of_loops () <= 1) | |
| 144 return 0; | |
| 145 | |
| 146 return tree_ssa_unswitch_loops (); | |
| 147 } | |
| 148 | |
| 149 static bool | |
| 150 gate_tree_ssa_loop_unswitch (void) | |
| 151 { | |
| 152 return flag_unswitch_loops != 0; | |
| 153 } | |
| 154 | |
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155 struct gimple_opt_pass pass_tree_unswitch = |
| 0 | 156 { |
| 157 { | |
| 158 GIMPLE_PASS, | |
| 159 "unswitch", /* name */ | |
| 160 gate_tree_ssa_loop_unswitch, /* gate */ | |
| 161 tree_ssa_loop_unswitch, /* execute */ | |
| 162 NULL, /* sub */ | |
| 163 NULL, /* next */ | |
| 164 0, /* static_pass_number */ | |
| 165 TV_TREE_LOOP_UNSWITCH, /* tv_id */ | |
| 166 PROP_cfg, /* properties_required */ | |
| 167 0, /* properties_provided */ | |
| 168 0, /* properties_destroyed */ | |
| 169 0, /* todo_flags_start */ | |
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170 TODO_ggc_collect | TODO_dump_func /* todo_flags_finish */ |
| 0 | 171 } |
| 172 }; | |
| 173 | |
| 174 /* Predictive commoning. */ | |
| 175 | |
| 176 static unsigned | |
| 177 run_tree_predictive_commoning (void) | |
| 178 { | |
| 179 if (!current_loops) | |
| 180 return 0; | |
| 181 | |
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182 return tree_predictive_commoning (); |
| 0 | 183 } |
| 184 | |
| 185 static bool | |
| 186 gate_tree_predictive_commoning (void) | |
| 187 { | |
| 188 return flag_predictive_commoning != 0; | |
| 189 } | |
| 190 | |
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191 struct gimple_opt_pass pass_predcom = |
| 0 | 192 { |
| 193 { | |
| 194 GIMPLE_PASS, | |
| 195 "pcom", /* name */ | |
| 196 gate_tree_predictive_commoning, /* gate */ | |
| 197 run_tree_predictive_commoning, /* execute */ | |
| 198 NULL, /* sub */ | |
| 199 NULL, /* next */ | |
| 200 0, /* static_pass_number */ | |
| 201 TV_PREDCOM, /* tv_id */ | |
| 202 PROP_cfg, /* properties_required */ | |
| 203 0, /* properties_provided */ | |
| 204 0, /* properties_destroyed */ | |
| 205 0, /* todo_flags_start */ | |
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206 TODO_dump_func |
| 0 | 207 | TODO_update_ssa_only_virtuals /* todo_flags_finish */ |
| 208 } | |
| 209 }; | |
| 210 | |
| 211 /* Loop autovectorization. */ | |
| 212 | |
| 213 static unsigned int | |
| 214 tree_vectorize (void) | |
| 215 { | |
| 216 if (number_of_loops () <= 1) | |
| 217 return 0; | |
| 218 | |
| 219 return vectorize_loops (); | |
| 220 } | |
| 221 | |
| 222 static bool | |
| 223 gate_tree_vectorize (void) | |
| 224 { | |
| 225 return flag_tree_vectorize; | |
| 226 } | |
| 227 | |
| 228 struct gimple_opt_pass pass_vectorize = | |
| 229 { | |
| 230 { | |
| 231 GIMPLE_PASS, | |
| 232 "vect", /* name */ | |
| 233 gate_tree_vectorize, /* gate */ | |
| 234 tree_vectorize, /* execute */ | |
| 235 NULL, /* sub */ | |
| 236 NULL, /* next */ | |
| 237 0, /* static_pass_number */ | |
| 238 TV_TREE_VECTORIZATION, /* tv_id */ | |
| 239 PROP_cfg | PROP_ssa, /* properties_required */ | |
| 240 0, /* properties_provided */ | |
| 241 0, /* properties_destroyed */ | |
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242 0, /* todo_flags_start */ |
| 0 | 243 TODO_dump_func | TODO_update_ssa |
| 244 | TODO_ggc_collect /* todo_flags_finish */ | |
| 245 } | |
| 246 }; | |
| 247 | |
| 248 /* GRAPHITE optimizations. */ | |
| 249 | |
| 250 static unsigned int | |
| 251 graphite_transforms (void) | |
| 252 { | |
| 253 if (!current_loops) | |
| 254 return 0; | |
| 255 | |
| 256 graphite_transform_loops (); | |
| 257 | |
| 258 return 0; | |
| 259 } | |
| 260 | |
| 261 static bool | |
| 262 gate_graphite_transforms (void) | |
| 263 { | |
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264 /* Enable -fgraphite pass if any one of the graphite optimization flags |
| 0 | 265 is turned on. */ |
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266 if (flag_loop_block |
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267 || flag_loop_interchange |
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268 || flag_loop_strip_mine |
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269 || flag_graphite_identity |
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270 || flag_loop_parallelize_all |
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271 || flag_loop_flatten) |
| 0 | 272 flag_graphite = 1; |
| 273 | |
| 274 return flag_graphite != 0; | |
| 275 } | |
| 276 | |
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277 struct gimple_opt_pass pass_graphite = |
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278 { |
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279 { |
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280 GIMPLE_PASS, |
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281 "graphite0", /* name */ |
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282 gate_graphite_transforms, /* gate */ |
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283 NULL, /* execute */ |
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284 NULL, /* sub */ |
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285 NULL, /* next */ |
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286 0, /* static_pass_number */ |
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287 TV_GRAPHITE, /* tv_id */ |
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288 PROP_cfg | PROP_ssa, /* properties_required */ |
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289 0, /* properties_provided */ |
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290 0, /* properties_destroyed */ |
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291 0, /* todo_flags_start */ |
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292 0 /* todo_flags_finish */ |
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293 } |
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294 }; |
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295 |
| 0 | 296 struct gimple_opt_pass pass_graphite_transforms = |
| 297 { | |
| 298 { | |
| 299 GIMPLE_PASS, | |
| 300 "graphite", /* name */ | |
| 301 gate_graphite_transforms, /* gate */ | |
| 302 graphite_transforms, /* execute */ | |
| 303 NULL, /* sub */ | |
| 304 NULL, /* next */ | |
| 305 0, /* static_pass_number */ | |
| 306 TV_GRAPHITE_TRANSFORMS, /* tv_id */ | |
| 307 PROP_cfg | PROP_ssa, /* properties_required */ | |
| 308 0, /* properties_provided */ | |
| 309 0, /* properties_destroyed */ | |
| 310 0, /* todo_flags_start */ | |
|
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311 TODO_dump_func /* todo_flags_finish */ |
| 0 | 312 } |
| 313 }; | |
| 314 | |
| 315 /* Check the correctness of the data dependence analyzers. */ | |
| 316 | |
| 317 static unsigned int | |
| 318 check_data_deps (void) | |
| 319 { | |
| 320 if (number_of_loops () <= 1) | |
| 321 return 0; | |
| 322 | |
| 323 tree_check_data_deps (); | |
| 324 return 0; | |
| 325 } | |
| 326 | |
| 327 static bool | |
| 328 gate_check_data_deps (void) | |
| 329 { | |
| 330 return flag_check_data_deps != 0; | |
| 331 } | |
| 332 | |
| 333 struct gimple_opt_pass pass_check_data_deps = | |
| 334 { | |
| 335 { | |
| 336 GIMPLE_PASS, | |
| 337 "ckdd", /* name */ | |
| 338 gate_check_data_deps, /* gate */ | |
| 339 check_data_deps, /* execute */ | |
| 340 NULL, /* sub */ | |
| 341 NULL, /* next */ | |
| 342 0, /* static_pass_number */ | |
| 343 TV_CHECK_DATA_DEPS, /* tv_id */ | |
| 344 PROP_cfg | PROP_ssa, /* properties_required */ | |
| 345 0, /* properties_provided */ | |
| 346 0, /* properties_destroyed */ | |
| 347 0, /* todo_flags_start */ | |
| 348 TODO_dump_func /* todo_flags_finish */ | |
| 349 } | |
| 350 }; | |
| 351 | |
| 352 /* Canonical induction variable creation pass. */ | |
| 353 | |
| 354 static unsigned int | |
| 355 tree_ssa_loop_ivcanon (void) | |
| 356 { | |
| 357 if (number_of_loops () <= 1) | |
| 358 return 0; | |
| 359 | |
| 360 return canonicalize_induction_variables (); | |
| 361 } | |
| 362 | |
| 363 static bool | |
| 364 gate_tree_ssa_loop_ivcanon (void) | |
| 365 { | |
| 366 return flag_tree_loop_ivcanon != 0; | |
| 367 } | |
| 368 | |
| 369 struct gimple_opt_pass pass_iv_canon = | |
| 370 { | |
| 371 { | |
| 372 GIMPLE_PASS, | |
| 373 "ivcanon", /* name */ | |
| 374 gate_tree_ssa_loop_ivcanon, /* gate */ | |
| 375 tree_ssa_loop_ivcanon, /* execute */ | |
| 376 NULL, /* sub */ | |
| 377 NULL, /* next */ | |
| 378 0, /* static_pass_number */ | |
| 379 TV_TREE_LOOP_IVCANON, /* tv_id */ | |
| 380 PROP_cfg | PROP_ssa, /* properties_required */ | |
| 381 0, /* properties_provided */ | |
| 382 0, /* properties_destroyed */ | |
| 383 0, /* todo_flags_start */ | |
|
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384 TODO_dump_func /* todo_flags_finish */ |
| 0 | 385 } |
| 386 }; | |
| 387 | |
| 388 /* Propagation of constants using scev. */ | |
| 389 | |
| 390 static bool | |
| 391 gate_scev_const_prop (void) | |
| 392 { | |
| 393 return flag_tree_scev_cprop; | |
| 394 } | |
| 395 | |
| 396 struct gimple_opt_pass pass_scev_cprop = | |
| 397 { | |
| 398 { | |
| 399 GIMPLE_PASS, | |
| 400 "sccp", /* name */ | |
| 401 gate_scev_const_prop, /* gate */ | |
| 402 scev_const_prop, /* execute */ | |
| 403 NULL, /* sub */ | |
| 404 NULL, /* next */ | |
| 405 0, /* static_pass_number */ | |
| 406 TV_SCEV_CONST, /* tv_id */ | |
| 407 PROP_cfg | PROP_ssa, /* properties_required */ | |
| 408 0, /* properties_provided */ | |
| 409 0, /* properties_destroyed */ | |
| 410 0, /* todo_flags_start */ | |
| 411 TODO_dump_func | TODO_cleanup_cfg | |
| 412 | TODO_update_ssa_only_virtuals | |
| 413 /* todo_flags_finish */ | |
| 414 } | |
| 415 }; | |
| 416 | |
| 417 /* Record bounds on numbers of iterations of loops. */ | |
| 418 | |
| 419 static unsigned int | |
| 420 tree_ssa_loop_bounds (void) | |
| 421 { | |
| 422 if (number_of_loops () <= 1) | |
| 423 return 0; | |
| 424 | |
|
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425 estimate_numbers_of_iterations (true); |
| 0 | 426 scev_reset (); |
| 427 return 0; | |
| 428 } | |
| 429 | |
| 430 struct gimple_opt_pass pass_record_bounds = | |
| 431 { | |
| 432 { | |
| 433 GIMPLE_PASS, | |
|
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434 "*record_bounds", /* name */ |
| 0 | 435 NULL, /* gate */ |
| 436 tree_ssa_loop_bounds, /* execute */ | |
| 437 NULL, /* sub */ | |
| 438 NULL, /* next */ | |
| 439 0, /* static_pass_number */ | |
| 440 TV_TREE_LOOP_BOUNDS, /* tv_id */ | |
| 441 PROP_cfg | PROP_ssa, /* properties_required */ | |
| 442 0, /* properties_provided */ | |
| 443 0, /* properties_destroyed */ | |
| 444 0, /* todo_flags_start */ | |
| 445 0 /* todo_flags_finish */ | |
| 446 } | |
| 447 }; | |
| 448 | |
| 449 /* Complete unrolling of loops. */ | |
| 450 | |
| 451 static unsigned int | |
| 452 tree_complete_unroll (void) | |
| 453 { | |
| 454 if (number_of_loops () <= 1) | |
| 455 return 0; | |
| 456 | |
| 457 return tree_unroll_loops_completely (flag_unroll_loops | |
| 458 || flag_peel_loops | |
| 459 || optimize >= 3, true); | |
| 460 } | |
| 461 | |
| 462 static bool | |
| 463 gate_tree_complete_unroll (void) | |
| 464 { | |
| 465 return true; | |
| 466 } | |
| 467 | |
| 468 struct gimple_opt_pass pass_complete_unroll = | |
| 469 { | |
| 470 { | |
| 471 GIMPLE_PASS, | |
| 472 "cunroll", /* name */ | |
| 473 gate_tree_complete_unroll, /* gate */ | |
| 474 tree_complete_unroll, /* execute */ | |
| 475 NULL, /* sub */ | |
| 476 NULL, /* next */ | |
| 477 0, /* static_pass_number */ | |
| 478 TV_COMPLETE_UNROLL, /* tv_id */ | |
| 479 PROP_cfg | PROP_ssa, /* properties_required */ | |
| 480 0, /* properties_provided */ | |
| 481 0, /* properties_destroyed */ | |
| 482 0, /* todo_flags_start */ | |
|
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483 TODO_dump_func |
| 0 | 484 | TODO_ggc_collect /* todo_flags_finish */ |
| 485 } | |
| 486 }; | |
| 487 | |
| 488 /* Complete unrolling of inner loops. */ | |
| 489 | |
| 490 static unsigned int | |
| 491 tree_complete_unroll_inner (void) | |
| 492 { | |
| 493 unsigned ret = 0; | |
| 494 | |
| 495 loop_optimizer_init (LOOPS_NORMAL | |
| 496 | LOOPS_HAVE_RECORDED_EXITS); | |
| 497 if (number_of_loops () > 1) | |
| 498 { | |
| 499 scev_initialize (); | |
| 500 ret = tree_unroll_loops_completely (optimize >= 3, false); | |
| 501 free_numbers_of_iterations_estimates (); | |
| 502 scev_finalize (); | |
| 503 } | |
| 504 loop_optimizer_finalize (); | |
| 505 | |
| 506 return ret; | |
| 507 } | |
| 508 | |
| 509 static bool | |
| 510 gate_tree_complete_unroll_inner (void) | |
| 511 { | |
| 512 return optimize >= 2; | |
| 513 } | |
| 514 | |
| 515 struct gimple_opt_pass pass_complete_unrolli = | |
| 516 { | |
| 517 { | |
| 518 GIMPLE_PASS, | |
| 519 "cunrolli", /* name */ | |
| 520 gate_tree_complete_unroll_inner, /* gate */ | |
| 521 tree_complete_unroll_inner, /* execute */ | |
| 522 NULL, /* sub */ | |
| 523 NULL, /* next */ | |
| 524 0, /* static_pass_number */ | |
| 525 TV_COMPLETE_UNROLL, /* tv_id */ | |
| 526 PROP_cfg | PROP_ssa, /* properties_required */ | |
| 527 0, /* properties_provided */ | |
| 528 0, /* properties_destroyed */ | |
| 529 0, /* todo_flags_start */ | |
|
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530 TODO_verify_flow |
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531 | TODO_dump_func |
| 0 | 532 | TODO_ggc_collect /* todo_flags_finish */ |
| 533 } | |
| 534 }; | |
| 535 | |
| 536 /* Parallelization. */ | |
| 537 | |
| 538 static bool | |
| 539 gate_tree_parallelize_loops (void) | |
| 540 { | |
| 541 return flag_tree_parallelize_loops > 1; | |
| 542 } | |
| 543 | |
| 544 static unsigned | |
| 545 tree_parallelize_loops (void) | |
| 546 { | |
| 547 if (number_of_loops () <= 1) | |
| 548 return 0; | |
| 549 | |
| 550 if (parallelize_loops ()) | |
| 551 return TODO_cleanup_cfg | TODO_rebuild_alias; | |
| 552 return 0; | |
| 553 } | |
| 554 | |
| 555 struct gimple_opt_pass pass_parallelize_loops = | |
| 556 { | |
| 557 { | |
| 558 GIMPLE_PASS, | |
| 559 "parloops", /* name */ | |
| 560 gate_tree_parallelize_loops, /* gate */ | |
| 561 tree_parallelize_loops, /* execute */ | |
| 562 NULL, /* sub */ | |
| 563 NULL, /* next */ | |
| 564 0, /* static_pass_number */ | |
| 565 TV_TREE_PARALLELIZE_LOOPS, /* tv_id */ | |
| 566 PROP_cfg | PROP_ssa, /* properties_required */ | |
| 567 0, /* properties_provided */ | |
| 568 0, /* properties_destroyed */ | |
| 569 0, /* todo_flags_start */ | |
|
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570 TODO_dump_func /* todo_flags_finish */ |
| 0 | 571 } |
| 572 }; | |
| 573 | |
| 574 /* Prefetching. */ | |
| 575 | |
| 576 static unsigned int | |
| 577 tree_ssa_loop_prefetch (void) | |
| 578 { | |
| 579 if (number_of_loops () <= 1) | |
| 580 return 0; | |
| 581 | |
| 582 return tree_ssa_prefetch_arrays (); | |
| 583 } | |
| 584 | |
| 585 static bool | |
| 586 gate_tree_ssa_loop_prefetch (void) | |
| 587 { | |
|
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588 return flag_prefetch_loop_arrays > 0; |
| 0 | 589 } |
| 590 | |
| 591 struct gimple_opt_pass pass_loop_prefetch = | |
| 592 { | |
| 593 { | |
| 594 GIMPLE_PASS, | |
| 595 "aprefetch", /* name */ | |
| 596 gate_tree_ssa_loop_prefetch, /* gate */ | |
| 597 tree_ssa_loop_prefetch, /* execute */ | |
| 598 NULL, /* sub */ | |
| 599 NULL, /* next */ | |
| 600 0, /* static_pass_number */ | |
| 601 TV_TREE_PREFETCH, /* tv_id */ | |
| 602 PROP_cfg | PROP_ssa, /* properties_required */ | |
| 603 0, /* properties_provided */ | |
| 604 0, /* properties_destroyed */ | |
| 605 0, /* todo_flags_start */ | |
|
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606 TODO_dump_func /* todo_flags_finish */ |
| 0 | 607 } |
| 608 }; | |
| 609 | |
| 610 /* Induction variable optimizations. */ | |
| 611 | |
| 612 static unsigned int | |
| 613 tree_ssa_loop_ivopts (void) | |
| 614 { | |
| 615 if (number_of_loops () <= 1) | |
| 616 return 0; | |
| 617 | |
| 618 tree_ssa_iv_optimize (); | |
| 619 return 0; | |
| 620 } | |
| 621 | |
| 622 static bool | |
| 623 gate_tree_ssa_loop_ivopts (void) | |
| 624 { | |
| 625 return flag_ivopts != 0; | |
| 626 } | |
| 627 | |
| 628 struct gimple_opt_pass pass_iv_optimize = | |
| 629 { | |
| 630 { | |
| 631 GIMPLE_PASS, | |
| 632 "ivopts", /* name */ | |
| 633 gate_tree_ssa_loop_ivopts, /* gate */ | |
| 634 tree_ssa_loop_ivopts, /* execute */ | |
| 635 NULL, /* sub */ | |
| 636 NULL, /* next */ | |
| 637 0, /* static_pass_number */ | |
| 638 TV_TREE_LOOP_IVOPTS, /* tv_id */ | |
| 639 PROP_cfg | PROP_ssa, /* properties_required */ | |
| 640 0, /* properties_provided */ | |
| 641 0, /* properties_destroyed */ | |
| 642 0, /* todo_flags_start */ | |
|
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643 TODO_dump_func | TODO_update_ssa | TODO_ggc_collect /* todo_flags_finish */ |
| 0 | 644 } |
| 645 }; | |
| 646 | |
| 647 /* Loop optimizer finalization. */ | |
| 648 | |
| 649 static unsigned int | |
| 650 tree_ssa_loop_done (void) | |
| 651 { | |
| 652 free_numbers_of_iterations_estimates (); | |
| 653 scev_finalize (); | |
| 654 loop_optimizer_finalize (); | |
| 655 return 0; | |
| 656 } | |
|
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657 |
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658 struct gimple_opt_pass pass_tree_loop_done = |
| 0 | 659 { |
| 660 { | |
| 661 GIMPLE_PASS, | |
| 662 "loopdone", /* name */ | |
| 663 NULL, /* gate */ | |
| 664 tree_ssa_loop_done, /* execute */ | |
| 665 NULL, /* sub */ | |
| 666 NULL, /* next */ | |
| 667 0, /* static_pass_number */ | |
| 668 TV_TREE_LOOP_FINI, /* tv_id */ | |
| 669 PROP_cfg, /* properties_required */ | |
| 670 0, /* properties_provided */ | |
| 671 0, /* properties_destroyed */ | |
| 672 0, /* todo_flags_start */ | |
|
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673 TODO_cleanup_cfg |
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674 | TODO_verify_flow |
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675 | TODO_dump_func /* todo_flags_finish */ |
| 0 | 676 } |
| 677 }; |