gcc/passes.def

   1 /* Description of pass structure
   2    Copyright (C) 1987-2021 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 under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 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 /*
  21  Macros that should be defined when using this file:
  22    INSERT_PASSES_AFTER (PASS)
  23    PUSH_INSERT_PASSES_WITHIN (PASS)
  24    POP_INSERT_PASSES ()
  25    NEXT_PASS (PASS)
  26    TERMINATE_PASS_LIST (PASS)
  27  */
  28
  29  /* All passes needed to lower the function into shape optimizers can
  30     operate on.  These passes are always run first on the function, but
  31     backend might produce already lowered functions that are not processed
  32     by these passes.  */
  33   INSERT_PASSES_AFTER (all_lowering_passes)
  34   NEXT_PASS (pass_warn_unused_result);
  35   NEXT_PASS (pass_diagnose_omp_blocks);
  36   NEXT_PASS (pass_diagnose_tm_blocks);
  37   NEXT_PASS (pass_omp_oacc_kernels_decompose);
  38   NEXT_PASS (pass_lower_omp);
  39   NEXT_PASS (pass_lower_cf);
  40   NEXT_PASS (pass_lower_tm);
  41   NEXT_PASS (pass_refactor_eh);
  42   NEXT_PASS (pass_lower_eh);
  43   NEXT_PASS (pass_coroutine_lower_builtins);
  44   NEXT_PASS (pass_build_cfg);
  45   NEXT_PASS (pass_warn_function_return);
  46   NEXT_PASS (pass_coroutine_early_expand_ifns);
  47   NEXT_PASS (pass_expand_omp);
  48   NEXT_PASS (pass_walloca, /*strict_mode_p=*/true);
  49   NEXT_PASS (pass_build_cgraph_edges);
  50   TERMINATE_PASS_LIST (all_lowering_passes)
  51
  52   /* Interprocedural optimization passes.  */
  53   INSERT_PASSES_AFTER (all_small_ipa_passes)
  54   NEXT_PASS (pass_ipa_free_lang_data);
  55   NEXT_PASS (pass_ipa_function_and_variable_visibility);
  56   NEXT_PASS (pass_build_ssa_passes);
  57   PUSH_INSERT_PASSES_WITHIN (pass_build_ssa_passes)
  58       NEXT_PASS (pass_fixup_cfg);
  59       NEXT_PASS (pass_build_ssa);
  60       NEXT_PASS (pass_warn_printf);
  61       NEXT_PASS (pass_warn_nonnull_compare);
  62       NEXT_PASS (pass_early_warn_uninitialized);
  63       NEXT_PASS (pass_ubsan);
  64       NEXT_PASS (pass_nothrow);
  65       NEXT_PASS (pass_rebuild_cgraph_edges);
  66   POP_INSERT_PASSES ()
  67
  68   NEXT_PASS (pass_local_optimization_passes);
  69   PUSH_INSERT_PASSES_WITHIN (pass_local_optimization_passes)
  70       NEXT_PASS (pass_fixup_cfg);
  71       NEXT_PASS (pass_rebuild_cgraph_edges);
  72       NEXT_PASS (pass_local_fn_summary);
  73       NEXT_PASS (pass_early_inline);
  74       NEXT_PASS (pass_warn_recursion);
  75       NEXT_PASS (pass_all_early_optimizations);
  76       PUSH_INSERT_PASSES_WITHIN (pass_all_early_optimizations)
  77           NEXT_PASS (pass_remove_cgraph_callee_edges);
  78           NEXT_PASS (pass_early_object_sizes);
  79           /* Don't record nonzero bits before IPA to avoid
  80              using too much memory.  */
  81           NEXT_PASS (pass_ccp, false /* nonzero_p */);
  82           /* After CCP we rewrite no longer addressed locals into SSA
  83              form if possible.  */
  84           NEXT_PASS (pass_forwprop);
  85           NEXT_PASS (pass_early_thread_jumps, /*first=*/true);
  86           NEXT_PASS (pass_sra_early);
  87           /* pass_build_ealias is a dummy pass that ensures that we
  88              execute TODO_rebuild_alias at this point.  */
  89           NEXT_PASS (pass_build_ealias);
  90           NEXT_PASS (pass_fre, true /* may_iterate */);
  91           NEXT_PASS (pass_early_vrp);
  92           NEXT_PASS (pass_merge_phi);
  93           NEXT_PASS (pass_dse);
  94           NEXT_PASS (pass_cd_dce, false /* update_address_taken_p */);
  95           NEXT_PASS (pass_phiopt, true /* early_p */);
  96           NEXT_PASS (pass_tail_recursion);
  97           NEXT_PASS (pass_if_to_switch);
  98           NEXT_PASS (pass_convert_switch);
  99           NEXT_PASS (pass_cleanup_eh);
 100           NEXT_PASS (pass_profile);
 101           NEXT_PASS (pass_local_pure_const);
 102           NEXT_PASS (pass_modref);
 103           /* Split functions creates parts that are not run through
 104              early optimizations again.  It is thus good idea to do this
 105               late.  */
 106           NEXT_PASS (pass_split_functions);
 107           NEXT_PASS (pass_strip_predict_hints, true /* early_p */);
 108       POP_INSERT_PASSES ()
 109       NEXT_PASS (pass_release_ssa_names);
 110       NEXT_PASS (pass_rebuild_cgraph_edges);
 111       NEXT_PASS (pass_local_fn_summary);
 112   POP_INSERT_PASSES ()
 113
 114   NEXT_PASS (pass_ipa_remove_symbols);
 115   NEXT_PASS (pass_ipa_oacc);
 116   PUSH_INSERT_PASSES_WITHIN (pass_ipa_oacc)
 117       NEXT_PASS (pass_ipa_pta);
 118       /* Pass group that runs when the function is an offloaded function
 119          containing oacc kernels loops.  */
 120       NEXT_PASS (pass_ipa_oacc_kernels);
 121       PUSH_INSERT_PASSES_WITHIN (pass_ipa_oacc_kernels)
 122           NEXT_PASS (pass_oacc_kernels);
 123           PUSH_INSERT_PASSES_WITHIN (pass_oacc_kernels)
 124               NEXT_PASS (pass_ch);
 125               NEXT_PASS (pass_fre, true /* may_iterate */);
 126               /* We use pass_lim to rewrite in-memory iteration and reduction
 127                  variable accesses in loops into local variables accesses.  */
 128               NEXT_PASS (pass_lim);
 129               NEXT_PASS (pass_dominator, false /* may_peel_loop_headers_p */);
 130               NEXT_PASS (pass_dce);
 131               NEXT_PASS (pass_parallelize_loops, true /* oacc_kernels_p */);
 132               NEXT_PASS (pass_expand_omp_ssa);
 133               NEXT_PASS (pass_rebuild_cgraph_edges);
 134           POP_INSERT_PASSES ()
 135       POP_INSERT_PASSES ()
 136   POP_INSERT_PASSES ()
 137
 138   NEXT_PASS (pass_target_clone);
 139   NEXT_PASS (pass_ipa_auto_profile);
 140   NEXT_PASS (pass_ipa_tree_profile);
 141   PUSH_INSERT_PASSES_WITHIN (pass_ipa_tree_profile)
 142       NEXT_PASS (pass_feedback_split_functions);
 143   POP_INSERT_PASSES ()
 144   NEXT_PASS (pass_ipa_free_fn_summary, true /* small_p */);
 145   NEXT_PASS (pass_ipa_increase_alignment);
 146   NEXT_PASS (pass_ipa_tm);
 147   NEXT_PASS (pass_ipa_lower_emutls);
 148   TERMINATE_PASS_LIST (all_small_ipa_passes)
 149
 150   INSERT_PASSES_AFTER (all_regular_ipa_passes)
 151   NEXT_PASS (pass_analyzer);
 152   NEXT_PASS (pass_ipa_odr);
 153   NEXT_PASS (pass_ipa_whole_program_visibility);
 154   NEXT_PASS (pass_ipa_profile);
 155   NEXT_PASS (pass_ipa_icf);
 156   NEXT_PASS (pass_ipa_devirt);
 157   NEXT_PASS (pass_ipa_cp);
 158   NEXT_PASS (pass_ipa_sra);
 159   NEXT_PASS (pass_ipa_cdtor_merge);
 160   NEXT_PASS (pass_ipa_fn_summary);
 161   NEXT_PASS (pass_ipa_inline);
 162   NEXT_PASS (pass_ipa_pure_const);
 163   NEXT_PASS (pass_ipa_modref);
 164   NEXT_PASS (pass_ipa_free_fn_summary, false /* small_p */);
 165   NEXT_PASS (pass_ipa_reference);
 166   /* This pass needs to be scheduled after any IP code duplication.   */
 167   NEXT_PASS (pass_ipa_single_use);
 168   /* Comdat privatization come last, as direct references to comdat local
 169      symbols are not allowed outside of the comdat group.  Privatizing early
 170      would result in missed optimizations due to this restriction.  */
 171   NEXT_PASS (pass_ipa_comdats);
 172   TERMINATE_PASS_LIST (all_regular_ipa_passes)
 173
 174   /* Simple IPA passes executed after the regular passes.  In WHOPR mode the
 175      passes are executed after partitioning and thus see just parts of the
 176      compiled unit.  */
 177   INSERT_PASSES_AFTER (all_late_ipa_passes)
 178   NEXT_PASS (pass_ipa_pta);
 179   NEXT_PASS (pass_omp_simd_clone);
 180   TERMINATE_PASS_LIST (all_late_ipa_passes)
 181
 182   /* These passes are run after IPA passes on every function that is being
 183      output to the assembler file.  */
 184   INSERT_PASSES_AFTER (all_passes)
 185   NEXT_PASS (pass_fixup_cfg);
 186   NEXT_PASS (pass_lower_eh_dispatch);
 187   NEXT_PASS (pass_oacc_loop_designation);
 188   NEXT_PASS (pass_omp_oacc_neuter_broadcast);
 189   NEXT_PASS (pass_oacc_device_lower);
 190   NEXT_PASS (pass_omp_device_lower);
 191   NEXT_PASS (pass_omp_target_link);
 192   NEXT_PASS (pass_adjust_alignment);
 193   NEXT_PASS (pass_all_optimizations);
 194   PUSH_INSERT_PASSES_WITHIN (pass_all_optimizations)
 195       NEXT_PASS (pass_remove_cgraph_callee_edges);
 196       /* Initial scalar cleanups before alias computation.
 197          They ensure memory accesses are not indirect wherever possible.  */
 198       NEXT_PASS (pass_strip_predict_hints, false /* early_p */);
 199       NEXT_PASS (pass_ccp, true /* nonzero_p */);
 200       /* After CCP we rewrite no longer addressed locals into SSA
 201          form if possible.  */
 202       NEXT_PASS (pass_object_sizes);
 203       NEXT_PASS (pass_post_ipa_warn);
 204       NEXT_PASS (pass_complete_unrolli);
 205       NEXT_PASS (pass_backprop);
 206       NEXT_PASS (pass_phiprop);
 207       NEXT_PASS (pass_forwprop);
 208       /* pass_build_alias is a dummy pass that ensures that we
 209          execute TODO_rebuild_alias at this point.  */
 210       NEXT_PASS (pass_build_alias);
 211       NEXT_PASS (pass_return_slot);
 212       NEXT_PASS (pass_fre, true /* may_iterate */);
 213       NEXT_PASS (pass_merge_phi);
 214       NEXT_PASS (pass_thread_jumps_full, /*first=*/true);
 215       NEXT_PASS (pass_vrp, true /* warn_array_bounds_p */);
 216       NEXT_PASS (pass_dse);
 217       NEXT_PASS (pass_dce);
 218       /* pass_stdarg is always run and at this point we execute
 219          TODO_remove_unused_locals to prune CLOBBERs of dead
 220          variables which are otherwise a churn on alias walkings.  */
 221       NEXT_PASS (pass_stdarg);
 222       NEXT_PASS (pass_call_cdce);
 223       NEXT_PASS (pass_cselim);
 224       NEXT_PASS (pass_copy_prop);
 225       NEXT_PASS (pass_tree_ifcombine);
 226       NEXT_PASS (pass_merge_phi);
 227       NEXT_PASS (pass_phiopt, false /* early_p */);
 228       NEXT_PASS (pass_tail_recursion);
 229       NEXT_PASS (pass_ch);
 230       NEXT_PASS (pass_lower_complex);
 231       NEXT_PASS (pass_sra);
 232       /* The dom pass will also resolve all __builtin_constant_p calls
 233          that are still there to 0.  This has to be done after some
 234          propagations have already run, but before some more dead code
 235          is removed, and this place fits nicely.  Remember this when
 236          trying to move or duplicate pass_dominator somewhere earlier.  */
 237       NEXT_PASS (pass_thread_jumps, /*first=*/true);
 238       NEXT_PASS (pass_dominator, true /* may_peel_loop_headers_p */);
 239       /* Threading can leave many const/copy propagations in the IL.
 240          Clean them up.  Failure to do so well can lead to false
 241          positives from warnings for erroneous code.  */
 242       NEXT_PASS (pass_copy_prop);
 243       /* Identify paths that should never be executed in a conforming
 244          program and isolate those paths.  */
 245       NEXT_PASS (pass_isolate_erroneous_paths);
 246       NEXT_PASS (pass_reassoc, true /* early_p */);
 247       NEXT_PASS (pass_dce);
 248       NEXT_PASS (pass_forwprop);
 249       NEXT_PASS (pass_phiopt, false /* early_p */);
 250       NEXT_PASS (pass_ccp, true /* nonzero_p */);
 251       /* After CCP we rewrite no longer addressed locals into SSA
 252          form if possible.  */
 253       NEXT_PASS (pass_cse_sincos);
 254       NEXT_PASS (pass_optimize_bswap);
 255       NEXT_PASS (pass_laddress);
 256       NEXT_PASS (pass_lim);
 257       NEXT_PASS (pass_walloca, false);
 258       NEXT_PASS (pass_pre);
 259       NEXT_PASS (pass_sink_code);
 260       NEXT_PASS (pass_sancov);
 261       NEXT_PASS (pass_asan);
 262       NEXT_PASS (pass_tsan);
 263       NEXT_PASS (pass_dse);
 264       NEXT_PASS (pass_dce);
 265       /* Pass group that runs when 1) enabled, 2) there are loops
 266          in the function.  Make sure to run pass_fix_loops before
 267          to discover/remove loops before running the gate function
 268          of pass_tree_loop.  */
 269       NEXT_PASS (pass_fix_loops);
 270       NEXT_PASS (pass_tree_loop);
 271       PUSH_INSERT_PASSES_WITHIN (pass_tree_loop)
 272           /* Before loop_init we rewrite no longer addressed locals into SSA
 273              form if possible.  */
 274           NEXT_PASS (pass_tree_loop_init);
 275           NEXT_PASS (pass_tree_unswitch);
 276           NEXT_PASS (pass_scev_cprop);
 277           NEXT_PASS (pass_loop_split);
 278           NEXT_PASS (pass_loop_versioning);
 279           NEXT_PASS (pass_loop_jam);
 280           /* All unswitching, final value replacement and splitting can expose
 281              empty loops.  Remove them now.  */
 282           NEXT_PASS (pass_cd_dce, false /* update_address_taken_p */);
 283           NEXT_PASS (pass_iv_canon);
 284           NEXT_PASS (pass_loop_distribution);
 285           NEXT_PASS (pass_linterchange);
 286           NEXT_PASS (pass_copy_prop);
 287           NEXT_PASS (pass_graphite);
 288           PUSH_INSERT_PASSES_WITHIN (pass_graphite)
 289               NEXT_PASS (pass_graphite_transforms);
 290               NEXT_PASS (pass_lim);
 291               NEXT_PASS (pass_copy_prop);
 292               NEXT_PASS (pass_dce);
 293           POP_INSERT_PASSES ()
 294           NEXT_PASS (pass_parallelize_loops, false /* oacc_kernels_p */);
 295           NEXT_PASS (pass_expand_omp_ssa);
 296           NEXT_PASS (pass_ch_vect);
 297           NEXT_PASS (pass_if_conversion);
 298           /* pass_vectorize must immediately follow pass_if_conversion.
 299              Please do not add any other passes in between.  */
 300           NEXT_PASS (pass_vectorize);
 301           PUSH_INSERT_PASSES_WITHIN (pass_vectorize)
 302               NEXT_PASS (pass_dce);
 303           POP_INSERT_PASSES ()
 304           NEXT_PASS (pass_predcom);
 305           NEXT_PASS (pass_complete_unroll);
 306           NEXT_PASS (pass_pre_slp_scalar_cleanup);
 307           PUSH_INSERT_PASSES_WITHIN (pass_pre_slp_scalar_cleanup)
 308               NEXT_PASS (pass_fre, false /* may_iterate */);
 309               NEXT_PASS (pass_dse);
 310           POP_INSERT_PASSES ()
 311           NEXT_PASS (pass_slp_vectorize);
 312           NEXT_PASS (pass_loop_prefetch);
 313           /* Run IVOPTs after the last pass that uses data-reference analysis
 314              as that doesn't handle TARGET_MEM_REFs.  */
 315           NEXT_PASS (pass_iv_optimize);
 316           NEXT_PASS (pass_lim);
 317           NEXT_PASS (pass_tree_loop_done);
 318       POP_INSERT_PASSES ()
 319       /* Pass group that runs when pass_tree_loop is disabled or there
 320          are no loops in the function.  */
 321       NEXT_PASS (pass_tree_no_loop);
 322       PUSH_INSERT_PASSES_WITHIN (pass_tree_no_loop)
 323           NEXT_PASS (pass_slp_vectorize);
 324       POP_INSERT_PASSES ()
 325       NEXT_PASS (pass_simduid_cleanup);
 326       NEXT_PASS (pass_lower_vector_ssa);
 327       NEXT_PASS (pass_lower_switch);
 328       NEXT_PASS (pass_cse_reciprocals);
 329       NEXT_PASS (pass_reassoc, false /* early_p */);
 330       NEXT_PASS (pass_strength_reduction);
 331       NEXT_PASS (pass_split_paths);
 332       NEXT_PASS (pass_tracer);
 333       NEXT_PASS (pass_fre, false /* may_iterate */);
 334       /* After late FRE we rewrite no longer addressed locals into SSA
 335          form if possible.  */
 336       NEXT_PASS (pass_thread_jumps, /*first=*/false);
 337       NEXT_PASS (pass_dominator, false /* may_peel_loop_headers_p */);
 338       NEXT_PASS (pass_strlen);
 339       NEXT_PASS (pass_thread_jumps_full, /*first=*/false);
 340       NEXT_PASS (pass_vrp, false /* warn_array_bounds_p */);
 341       /* Run CCP to compute alignment and nonzero bits.  */
 342       NEXT_PASS (pass_ccp, true /* nonzero_p */);
 343       NEXT_PASS (pass_warn_restrict);
 344       NEXT_PASS (pass_dse);
 345       NEXT_PASS (pass_cd_dce, true /* update_address_taken_p */);
 346       /* After late CD DCE we rewrite no longer addressed locals into SSA
 347          form if possible.  */
 348       NEXT_PASS (pass_forwprop);
 349       NEXT_PASS (pass_phiopt, false /* early_p */);
 350       NEXT_PASS (pass_fold_builtins);
 351       NEXT_PASS (pass_optimize_widening_mul);
 352       NEXT_PASS (pass_sink_code);
 353       NEXT_PASS (pass_store_merging);
 354       NEXT_PASS (pass_tail_calls);
 355       /* If DCE is not run before checking for uninitialized uses,
 356          we may get false warnings (e.g., testsuite/gcc.dg/uninit-5.c).
 357          However, this also causes us to misdiagnose cases that should be
 358          real warnings (e.g., testsuite/gcc.dg/pr18501.c).  */
 359       NEXT_PASS (pass_dce);
 360       /* Split critical edges before late uninit warning to reduce the
 361          number of false positives from it.  */
 362       NEXT_PASS (pass_split_crit_edges);
 363       NEXT_PASS (pass_late_warn_uninitialized);
 364       NEXT_PASS (pass_local_pure_const);
 365       NEXT_PASS (pass_modref);
 366       /* uncprop replaces constants by SSA names.  This makes analysis harder
 367          and thus it should be run last.  */
 368       NEXT_PASS (pass_uncprop);
 369   POP_INSERT_PASSES ()
 370   NEXT_PASS (pass_all_optimizations_g);
 371   PUSH_INSERT_PASSES_WITHIN (pass_all_optimizations_g)
 372       NEXT_PASS (pass_remove_cgraph_callee_edges);
 373       NEXT_PASS (pass_strip_predict_hints, false /* early_p */);
 374       /* Lower remaining pieces of GIMPLE.  */
 375       NEXT_PASS (pass_lower_complex);
 376       NEXT_PASS (pass_lower_vector_ssa);
 377       NEXT_PASS (pass_lower_switch);
 378       /* Perform simple scalar cleanup which is constant/copy propagation.  */
 379       NEXT_PASS (pass_ccp, true /* nonzero_p */);
 380       NEXT_PASS (pass_post_ipa_warn);
 381       NEXT_PASS (pass_object_sizes);
 382       /* Fold remaining builtins.  */
 383       NEXT_PASS (pass_fold_builtins);
 384       NEXT_PASS (pass_strlen);
 385       /* Copy propagation also copy-propagates constants, this is necessary
 386          to forward object-size and builtin folding results properly.  */
 387       NEXT_PASS (pass_copy_prop);
 388       NEXT_PASS (pass_dce);
 389       NEXT_PASS (pass_sancov);
 390       NEXT_PASS (pass_asan);
 391       NEXT_PASS (pass_tsan);
 392       /* ???  We do want some kind of loop invariant motion, but we possibly
 393          need to adjust LIM to be more friendly towards preserving accurate
 394          debug information here.  */
 395       /* Split critical edges before late uninit warning to reduce the
 396          number of false positives from it.  */
 397       NEXT_PASS (pass_split_crit_edges);
 398       NEXT_PASS (pass_late_warn_uninitialized);
 399       NEXT_PASS (pass_local_pure_const);
 400       NEXT_PASS (pass_modref);
 401       /* uncprop replaces constants by SSA names.  This makes analysis harder
 402          and thus it should be run last.  */
 403       NEXT_PASS (pass_uncprop);
 404   POP_INSERT_PASSES ()
 405   NEXT_PASS (pass_tm_init);
 406   PUSH_INSERT_PASSES_WITHIN (pass_tm_init)
 407       NEXT_PASS (pass_tm_mark);
 408       NEXT_PASS (pass_tm_memopt);
 409       NEXT_PASS (pass_tm_edges);
 410   POP_INSERT_PASSES ()
 411   NEXT_PASS (pass_simduid_cleanup);
 412   NEXT_PASS (pass_vtable_verify);
 413   NEXT_PASS (pass_lower_vaarg);
 414   NEXT_PASS (pass_lower_vector);
 415   NEXT_PASS (pass_lower_complex_O0);
 416   NEXT_PASS (pass_sancov_O0);
 417   NEXT_PASS (pass_lower_switch_O0);
 418   NEXT_PASS (pass_asan_O0);
 419   NEXT_PASS (pass_tsan_O0);
 420   NEXT_PASS (pass_sanopt);
 421   NEXT_PASS (pass_cleanup_eh);
 422   NEXT_PASS (pass_lower_resx);
 423   NEXT_PASS (pass_nrv);
 424   NEXT_PASS (pass_gimple_isel);
 425   NEXT_PASS (pass_harden_conditional_branches);
 426   NEXT_PASS (pass_harden_compares);
 427   NEXT_PASS (pass_cleanup_cfg_post_optimizing);
 428   NEXT_PASS (pass_warn_function_noreturn);
 429   NEXT_PASS (pass_warn_access);
 430
 431   NEXT_PASS (pass_expand);
 432
 433   NEXT_PASS (pass_rest_of_compilation);
 434   PUSH_INSERT_PASSES_WITHIN (pass_rest_of_compilation)
 435       NEXT_PASS (pass_instantiate_virtual_regs);
 436       NEXT_PASS (pass_into_cfg_layout_mode);
 437       NEXT_PASS (pass_jump);
 438       NEXT_PASS (pass_lower_subreg);
 439       NEXT_PASS (pass_df_initialize_opt);
 440       NEXT_PASS (pass_cse);
 441       NEXT_PASS (pass_rtl_fwprop);
 442       NEXT_PASS (pass_rtl_cprop);
 443       NEXT_PASS (pass_rtl_pre);
 444       NEXT_PASS (pass_rtl_hoist);
 445       NEXT_PASS (pass_rtl_cprop);
 446       NEXT_PASS (pass_rtl_store_motion);
 447       NEXT_PASS (pass_cse_after_global_opts);
 448       NEXT_PASS (pass_rtl_ifcvt);
 449       NEXT_PASS (pass_reginfo_init);
 450       /* Perform loop optimizations.  It might be better to do them a bit
 451          sooner, but we want the profile feedback to work more
 452          efficiently.  */
 453       NEXT_PASS (pass_loop2);
 454       PUSH_INSERT_PASSES_WITHIN (pass_loop2)
 455           NEXT_PASS (pass_rtl_loop_init);
 456           NEXT_PASS (pass_rtl_move_loop_invariants);
 457           NEXT_PASS (pass_rtl_unroll_loops);
 458           NEXT_PASS (pass_rtl_doloop);
 459           NEXT_PASS (pass_rtl_loop_done);
 460       POP_INSERT_PASSES ()
 461       NEXT_PASS (pass_lower_subreg2);
 462       NEXT_PASS (pass_web);
 463       NEXT_PASS (pass_rtl_cprop);
 464       NEXT_PASS (pass_cse2);
 465       NEXT_PASS (pass_rtl_dse1);
 466       NEXT_PASS (pass_rtl_fwprop_addr);
 467       NEXT_PASS (pass_inc_dec);
 468       NEXT_PASS (pass_initialize_regs);
 469       NEXT_PASS (pass_ud_rtl_dce);
 470       NEXT_PASS (pass_combine);
 471       NEXT_PASS (pass_if_after_combine);
 472       NEXT_PASS (pass_jump_after_combine);
 473       NEXT_PASS (pass_partition_blocks);
 474       NEXT_PASS (pass_outof_cfg_layout_mode);
 475       NEXT_PASS (pass_split_all_insns);
 476       NEXT_PASS (pass_lower_subreg3);
 477       NEXT_PASS (pass_df_initialize_no_opt);
 478       NEXT_PASS (pass_stack_ptr_mod);
 479       NEXT_PASS (pass_mode_switching);
 480       NEXT_PASS (pass_match_asm_constraints);
 481       NEXT_PASS (pass_sms);
 482       NEXT_PASS (pass_live_range_shrinkage);
 483       NEXT_PASS (pass_sched);
 484       NEXT_PASS (pass_early_remat);
 485       NEXT_PASS (pass_ira);
 486       NEXT_PASS (pass_reload);
 487       NEXT_PASS (pass_postreload);
 488       PUSH_INSERT_PASSES_WITHIN (pass_postreload)
 489           NEXT_PASS (pass_postreload_cse);
 490           NEXT_PASS (pass_gcse2);
 491           NEXT_PASS (pass_split_after_reload);
 492           NEXT_PASS (pass_ree);
 493           NEXT_PASS (pass_compare_elim_after_reload);
 494           NEXT_PASS (pass_thread_prologue_and_epilogue);
 495           NEXT_PASS (pass_rtl_dse2);
 496           NEXT_PASS (pass_stack_adjustments);
 497           NEXT_PASS (pass_jump2);
 498           NEXT_PASS (pass_duplicate_computed_gotos);
 499           NEXT_PASS (pass_sched_fusion);
 500           NEXT_PASS (pass_peephole2);
 501           NEXT_PASS (pass_if_after_reload);
 502           NEXT_PASS (pass_regrename);
 503           NEXT_PASS (pass_cprop_hardreg);
 504           NEXT_PASS (pass_fast_rtl_dce);
 505           NEXT_PASS (pass_reorder_blocks);
 506           NEXT_PASS (pass_leaf_regs);
 507           NEXT_PASS (pass_split_before_sched2);
 508           NEXT_PASS (pass_sched2);
 509           NEXT_PASS (pass_stack_regs);
 510           PUSH_INSERT_PASSES_WITHIN (pass_stack_regs)
 511               NEXT_PASS (pass_split_before_regstack);
 512               NEXT_PASS (pass_stack_regs_run);
 513           POP_INSERT_PASSES ()
 514       POP_INSERT_PASSES ()
 515       NEXT_PASS (pass_late_compilation);
 516       PUSH_INSERT_PASSES_WITHIN (pass_late_compilation)
 517           NEXT_PASS (pass_zero_call_used_regs);
 518           NEXT_PASS (pass_compute_alignments);
 519           NEXT_PASS (pass_variable_tracking);
 520           NEXT_PASS (pass_free_cfg);
 521           NEXT_PASS (pass_machine_reorg);
 522           NEXT_PASS (pass_cleanup_barriers);
 523           NEXT_PASS (pass_delay_slots);
 524           NEXT_PASS (pass_split_for_shorten_branches);
 525           NEXT_PASS (pass_convert_to_eh_region_ranges);
 526           NEXT_PASS (pass_shorten_branches);
 527           NEXT_PASS (pass_set_nothrow_function_flags);
 528           NEXT_PASS (pass_dwarf2_frame);
 529           NEXT_PASS (pass_final);
 530       POP_INSERT_PASSES ()
 531       NEXT_PASS (pass_df_finish);
 532   POP_INSERT_PASSES ()
 533   NEXT_PASS (pass_clean_state);
 534   TERMINATE_PASS_LIST (all_passes)