gcc/passes.def

   1 /* Description of pass structure
   2    Copyright (C) 1987-2023 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_build_cgraph_edges);
  49   TERMINATE_PASS_LIST (all_lowering_passes)
  50
  51   /* Interprocedural optimization passes.  */
  52   INSERT_PASSES_AFTER (all_small_ipa_passes)
  53   NEXT_PASS (pass_ipa_free_lang_data);
  54   NEXT_PASS (pass_ipa_function_and_variable_visibility);
  55   NEXT_PASS (pass_build_ssa_passes);
  56   PUSH_INSERT_PASSES_WITHIN (pass_build_ssa_passes)
  57       NEXT_PASS (pass_fixup_cfg);
  58       NEXT_PASS (pass_build_ssa);
  59       NEXT_PASS (pass_walloca, /*strict_mode_p=*/true);
  60       NEXT_PASS (pass_warn_printf);
  61       NEXT_PASS (pass_warn_nonnull_compare);
  62       NEXT_PASS (pass_early_warn_uninitialized);
  63       NEXT_PASS (pass_warn_access, /*early=*/true);
  64       NEXT_PASS (pass_ubsan);
  65       NEXT_PASS (pass_nothrow);
  66       NEXT_PASS (pass_rebuild_cgraph_edges);
  67   POP_INSERT_PASSES ()
  68
  69   NEXT_PASS (pass_local_optimization_passes);
  70   PUSH_INSERT_PASSES_WITHIN (pass_local_optimization_passes)
  71       NEXT_PASS (pass_fixup_cfg);
  72       NEXT_PASS (pass_rebuild_cgraph_edges);
  73       NEXT_PASS (pass_local_fn_summary);
  74       NEXT_PASS (pass_early_inline);
  75       NEXT_PASS (pass_warn_recursion);
  76       NEXT_PASS (pass_all_early_optimizations);
  77       PUSH_INSERT_PASSES_WITHIN (pass_all_early_optimizations)
  78           NEXT_PASS (pass_remove_cgraph_callee_edges);
  79           NEXT_PASS (pass_early_object_sizes);
  80           /* Don't record nonzero bits before IPA to avoid
  81              using too much memory.  */
  82           NEXT_PASS (pass_ccp, false /* nonzero_p */);
  83           /* After CCP we rewrite no longer addressed locals into SSA
  84              form if possible.  */
  85           NEXT_PASS (pass_forwprop);
  86           NEXT_PASS (pass_early_thread_jumps, /*first=*/true);
  87           NEXT_PASS (pass_sra_early);
  88           /* pass_build_ealias is a dummy pass that ensures that we
  89              execute TODO_rebuild_alias at this point.  */
  90           NEXT_PASS (pass_build_ealias);
  91           /* Do phiprop before FRE so we optimize std::min and std::max well.  */
  92           NEXT_PASS (pass_phiprop);
  93           NEXT_PASS (pass_fre, true /* may_iterate */);
  94           NEXT_PASS (pass_early_vrp);
  95           NEXT_PASS (pass_merge_phi);
  96           NEXT_PASS (pass_dse);
  97           NEXT_PASS (pass_cd_dce, false /* update_address_taken_p */);
  98           NEXT_PASS (pass_phiopt, true /* early_p */);
  99           NEXT_PASS (pass_tail_recursion);
 100           NEXT_PASS (pass_if_to_switch);
 101           NEXT_PASS (pass_convert_switch);
 102           NEXT_PASS (pass_cleanup_eh);
 103           NEXT_PASS (pass_profile);
 104           NEXT_PASS (pass_local_pure_const);
 105           NEXT_PASS (pass_modref);
 106           /* Split functions creates parts that are not run through
 107              early optimizations again.  It is thus good idea to do this
 108               late.  */
 109           NEXT_PASS (pass_split_functions);
 110           NEXT_PASS (pass_strip_predict_hints, true /* early_p */);
 111       POP_INSERT_PASSES ()
 112       NEXT_PASS (pass_release_ssa_names);
 113       NEXT_PASS (pass_rebuild_cgraph_edges);
 114       NEXT_PASS (pass_local_fn_summary);
 115   POP_INSERT_PASSES ()
 116
 117   NEXT_PASS (pass_ipa_remove_symbols);
 118   NEXT_PASS (pass_ipa_oacc);
 119   PUSH_INSERT_PASSES_WITHIN (pass_ipa_oacc)
 120       NEXT_PASS (pass_ipa_pta);
 121       /* Pass group that runs when the function is an offloaded function
 122          containing oacc kernels loops.  */
 123       NEXT_PASS (pass_ipa_oacc_kernels);
 124       PUSH_INSERT_PASSES_WITHIN (pass_ipa_oacc_kernels)
 125           NEXT_PASS (pass_oacc_kernels);
 126           PUSH_INSERT_PASSES_WITHIN (pass_oacc_kernels)
 127               NEXT_PASS (pass_ch);
 128               NEXT_PASS (pass_fre, true /* may_iterate */);
 129               /* We use pass_lim to rewrite in-memory iteration and reduction
 130                  variable accesses in loops into local variables accesses.  */
 131               NEXT_PASS (pass_lim);
 132               NEXT_PASS (pass_dominator, false /* may_peel_loop_headers_p */);
 133               NEXT_PASS (pass_dce);
 134               NEXT_PASS (pass_parallelize_loops, true /* oacc_kernels_p */);
 135               NEXT_PASS (pass_expand_omp_ssa);
 136               NEXT_PASS (pass_rebuild_cgraph_edges);
 137           POP_INSERT_PASSES ()
 138       POP_INSERT_PASSES ()
 139   POP_INSERT_PASSES ()
 140
 141   NEXT_PASS (pass_target_clone);
 142   NEXT_PASS (pass_ipa_auto_profile);
 143   NEXT_PASS (pass_ipa_tree_profile);
 144   PUSH_INSERT_PASSES_WITHIN (pass_ipa_tree_profile)
 145       NEXT_PASS (pass_feedback_split_functions);
 146   POP_INSERT_PASSES ()
 147   NEXT_PASS (pass_ipa_free_fn_summary, true /* small_p */);
 148   NEXT_PASS (pass_ipa_increase_alignment);
 149   NEXT_PASS (pass_ipa_tm);
 150   NEXT_PASS (pass_ipa_lower_emutls);
 151   TERMINATE_PASS_LIST (all_small_ipa_passes)
 152
 153   INSERT_PASSES_AFTER (all_regular_ipa_passes)
 154   NEXT_PASS (pass_analyzer);
 155   NEXT_PASS (pass_ipa_odr);
 156   NEXT_PASS (pass_ipa_whole_program_visibility);
 157   NEXT_PASS (pass_ipa_profile);
 158   NEXT_PASS (pass_ipa_icf);
 159   NEXT_PASS (pass_ipa_devirt);
 160   NEXT_PASS (pass_ipa_cp);
 161   NEXT_PASS (pass_ipa_sra);
 162   NEXT_PASS (pass_ipa_cdtor_merge);
 163   NEXT_PASS (pass_ipa_fn_summary);
 164   NEXT_PASS (pass_ipa_inline);
 165   NEXT_PASS (pass_ipa_pure_const);
 166   NEXT_PASS (pass_ipa_modref);
 167   NEXT_PASS (pass_ipa_free_fn_summary, false /* small_p */);
 168   NEXT_PASS (pass_ipa_reference);
 169   /* This pass needs to be scheduled after any IP code duplication.   */
 170   NEXT_PASS (pass_ipa_single_use);
 171   /* Comdat privatization come last, as direct references to comdat local
 172      symbols are not allowed outside of the comdat group.  Privatizing early
 173      would result in missed optimizations due to this restriction.  */
 174   NEXT_PASS (pass_ipa_comdats);
 175   TERMINATE_PASS_LIST (all_regular_ipa_passes)
 176
 177   /* Simple IPA passes executed after the regular passes.  In WHOPR mode the
 178      passes are executed after partitioning and thus see just parts of the
 179      compiled unit.  */
 180   INSERT_PASSES_AFTER (all_late_ipa_passes)
 181   NEXT_PASS (pass_ipa_pta);
 182   NEXT_PASS (pass_omp_simd_clone);
 183   TERMINATE_PASS_LIST (all_late_ipa_passes)
 184
 185   /* These passes are run after IPA passes on every function that is being
 186      output to the assembler file.  */
 187   INSERT_PASSES_AFTER (all_passes)
 188   NEXT_PASS (pass_fixup_cfg);
 189   NEXT_PASS (pass_lower_eh_dispatch);
 190   NEXT_PASS (pass_oacc_loop_designation);
 191   NEXT_PASS (pass_omp_oacc_neuter_broadcast);
 192   NEXT_PASS (pass_oacc_device_lower);
 193   NEXT_PASS (pass_omp_device_lower);
 194   NEXT_PASS (pass_omp_target_link);
 195   NEXT_PASS (pass_adjust_alignment);
 196   NEXT_PASS (pass_all_optimizations);
 197   PUSH_INSERT_PASSES_WITHIN (pass_all_optimizations)
 198       NEXT_PASS (pass_remove_cgraph_callee_edges);
 199       /* Initial scalar cleanups before alias computation.
 200          They ensure memory accesses are not indirect wherever possible.  */
 201       NEXT_PASS (pass_strip_predict_hints, false /* early_p */);
 202       NEXT_PASS (pass_ccp, true /* nonzero_p */);
 203       /* After CCP we rewrite no longer addressed locals into SSA
 204          form if possible.  */
 205       NEXT_PASS (pass_object_sizes);
 206       NEXT_PASS (pass_post_ipa_warn);
 207       /* Must run before loop unrolling.  */
 208       NEXT_PASS (pass_warn_access, /*early=*/true);
 209       NEXT_PASS (pass_complete_unrolli);
 210       NEXT_PASS (pass_backprop);
 211       NEXT_PASS (pass_phiprop);
 212       NEXT_PASS (pass_forwprop);
 213       /* pass_build_alias is a dummy pass that ensures that we
 214          execute TODO_rebuild_alias at this point.  */
 215       NEXT_PASS (pass_build_alias);
 216       NEXT_PASS (pass_return_slot);
 217       NEXT_PASS (pass_fre, true /* may_iterate */);
 218       NEXT_PASS (pass_merge_phi);
 219       NEXT_PASS (pass_thread_jumps_full, /*first=*/true);
 220       NEXT_PASS (pass_vrp, true /* warn_array_bounds_p */);
 221       NEXT_PASS (pass_dse);
 222       NEXT_PASS (pass_dce);
 223       /* pass_stdarg is always run and at this point we execute
 224          TODO_remove_unused_locals to prune CLOBBERs of dead
 225          variables which are otherwise a churn on alias walkings.  */
 226       NEXT_PASS (pass_stdarg);
 227       NEXT_PASS (pass_call_cdce);
 228       NEXT_PASS (pass_cselim);
 229       NEXT_PASS (pass_copy_prop);
 230       NEXT_PASS (pass_tree_ifcombine);
 231       NEXT_PASS (pass_merge_phi);
 232       NEXT_PASS (pass_phiopt, false /* early_p */);
 233       NEXT_PASS (pass_tail_recursion);
 234       NEXT_PASS (pass_ch);
 235       NEXT_PASS (pass_lower_complex);
 236       NEXT_PASS (pass_sra);
 237       /* The dom pass will also resolve all __builtin_constant_p calls
 238          that are still there to 0.  This has to be done after some
 239          propagations have already run, but before some more dead code
 240          is removed, and this place fits nicely.  Remember this when
 241          trying to move or duplicate pass_dominator somewhere earlier.  */
 242       NEXT_PASS (pass_thread_jumps, /*first=*/true);
 243       NEXT_PASS (pass_dominator, true /* may_peel_loop_headers_p */);
 244       /* Threading can leave many const/copy propagations in the IL.
 245          Clean them up.  Failure to do so well can lead to false
 246          positives from warnings for erroneous code.  */
 247       NEXT_PASS (pass_copy_prop);
 248       /* Identify paths that should never be executed in a conforming
 249          program and isolate those paths.  */
 250       NEXT_PASS (pass_isolate_erroneous_paths);
 251       NEXT_PASS (pass_reassoc, true /* early_p */);
 252       NEXT_PASS (pass_dce);
 253       NEXT_PASS (pass_forwprop);
 254       NEXT_PASS (pass_phiopt, false /* early_p */);
 255       NEXT_PASS (pass_ccp, true /* nonzero_p */);
 256       /* After CCP we rewrite no longer addressed locals into SSA
 257          form if possible.  */
 258       NEXT_PASS (pass_expand_powcabs);
 259       NEXT_PASS (pass_optimize_bswap);
 260       NEXT_PASS (pass_laddress);
 261       NEXT_PASS (pass_lim);
 262       NEXT_PASS (pass_walloca, false);
 263       NEXT_PASS (pass_pre);
 264       NEXT_PASS (pass_sink_code, false /* unsplit edges */);
 265       NEXT_PASS (pass_sancov);
 266       NEXT_PASS (pass_asan);
 267       NEXT_PASS (pass_tsan);
 268       NEXT_PASS (pass_dse, true /* use DR analysis */);
 269       NEXT_PASS (pass_dce);
 270       /* Pass group that runs when 1) enabled, 2) there are loops
 271          in the function.  Make sure to run pass_fix_loops before
 272          to discover/remove loops before running the gate function
 273          of pass_tree_loop.  */
 274       NEXT_PASS (pass_fix_loops);
 275       NEXT_PASS (pass_tree_loop);
 276       PUSH_INSERT_PASSES_WITHIN (pass_tree_loop)
 277           /* Before loop_init we rewrite no longer addressed locals into SSA
 278              form if possible.  */
 279           NEXT_PASS (pass_tree_loop_init);
 280           NEXT_PASS (pass_tree_unswitch);
 281           NEXT_PASS (pass_scev_cprop);
 282           NEXT_PASS (pass_loop_split);
 283           NEXT_PASS (pass_loop_versioning);
 284           NEXT_PASS (pass_loop_jam);
 285           /* All unswitching, final value replacement and splitting can expose
 286              empty loops.  Remove them now.  */
 287           NEXT_PASS (pass_cd_dce, false /* update_address_taken_p */);
 288           NEXT_PASS (pass_iv_canon);
 289           NEXT_PASS (pass_loop_distribution);
 290           NEXT_PASS (pass_linterchange);
 291           NEXT_PASS (pass_copy_prop);
 292           NEXT_PASS (pass_graphite);
 293           PUSH_INSERT_PASSES_WITHIN (pass_graphite)
 294               NEXT_PASS (pass_graphite_transforms);
 295               NEXT_PASS (pass_lim);
 296               NEXT_PASS (pass_copy_prop);
 297               NEXT_PASS (pass_dce);
 298           POP_INSERT_PASSES ()
 299           NEXT_PASS (pass_parallelize_loops, false /* oacc_kernels_p */);
 300           NEXT_PASS (pass_expand_omp_ssa);
 301           NEXT_PASS (pass_ch_vect);
 302           NEXT_PASS (pass_if_conversion);
 303           /* pass_vectorize must immediately follow pass_if_conversion.
 304              Please do not add any other passes in between.  */
 305           NEXT_PASS (pass_vectorize);
 306           PUSH_INSERT_PASSES_WITHIN (pass_vectorize)
 307               NEXT_PASS (pass_dce);
 308           POP_INSERT_PASSES ()
 309           NEXT_PASS (pass_predcom);
 310           NEXT_PASS (pass_complete_unroll);
 311           NEXT_PASS (pass_pre_slp_scalar_cleanup);
 312           PUSH_INSERT_PASSES_WITHIN (pass_pre_slp_scalar_cleanup)
 313               NEXT_PASS (pass_fre, false /* may_iterate */);
 314               NEXT_PASS (pass_dse);
 315           POP_INSERT_PASSES ()
 316           NEXT_PASS (pass_slp_vectorize);
 317           NEXT_PASS (pass_loop_prefetch);
 318           /* Run IVOPTs after the last pass that uses data-reference analysis
 319              as that doesn't handle TARGET_MEM_REFs.  */
 320           NEXT_PASS (pass_iv_optimize);
 321           NEXT_PASS (pass_lim);
 322           NEXT_PASS (pass_tree_loop_done);
 323       POP_INSERT_PASSES ()
 324       /* Pass group that runs when pass_tree_loop is disabled or there
 325          are no loops in the function.  */
 326       NEXT_PASS (pass_tree_no_loop);
 327       PUSH_INSERT_PASSES_WITHIN (pass_tree_no_loop)
 328           NEXT_PASS (pass_slp_vectorize);
 329       POP_INSERT_PASSES ()
 330       NEXT_PASS (pass_simduid_cleanup);
 331       NEXT_PASS (pass_lower_vector_ssa);
 332       NEXT_PASS (pass_lower_switch);
 333       NEXT_PASS (pass_cse_sincos);
 334       NEXT_PASS (pass_cse_reciprocals);
 335       NEXT_PASS (pass_reassoc, false /* early_p */);
 336       NEXT_PASS (pass_strength_reduction);
 337       NEXT_PASS (pass_split_paths);
 338       NEXT_PASS (pass_tracer);
 339       NEXT_PASS (pass_fre, false /* may_iterate */);
 340       /* After late FRE we rewrite no longer addressed locals into SSA
 341          form if possible.  */
 342       NEXT_PASS (pass_thread_jumps, /*first=*/false);
 343       NEXT_PASS (pass_dominator, false /* may_peel_loop_headers_p */);
 344       NEXT_PASS (pass_strlen);
 345       NEXT_PASS (pass_thread_jumps_full, /*first=*/false);
 346       NEXT_PASS (pass_vrp, false /* warn_array_bounds_p */);
 347       /* Run CCP to compute alignment and nonzero bits.  */
 348       NEXT_PASS (pass_ccp, true /* nonzero_p */);
 349       NEXT_PASS (pass_warn_restrict);
 350       NEXT_PASS (pass_dse);
 351       NEXT_PASS (pass_dce, true /* update_address_taken_p */);
 352       /* After late DCE we rewrite no longer addressed locals into SSA
 353          form if possible.  */
 354       NEXT_PASS (pass_forwprop);
 355       NEXT_PASS (pass_sink_code, true /* unsplit edges */);
 356       NEXT_PASS (pass_phiopt, false /* early_p */);
 357       NEXT_PASS (pass_fold_builtins);
 358       NEXT_PASS (pass_optimize_widening_mul);
 359       NEXT_PASS (pass_store_merging);
 360       /* If DCE is not run before checking for uninitialized uses,
 361          we may get false warnings (e.g., testsuite/gcc.dg/uninit-5.c).
 362          However, this also causes us to misdiagnose cases that should be
 363          real warnings (e.g., testsuite/gcc.dg/pr18501.c).  */
 364       NEXT_PASS (pass_cd_dce, false /* update_address_taken_p */);
 365       NEXT_PASS (pass_tail_calls);
 366       /* Split critical edges before late uninit warning to reduce the
 367          number of false positives from it.  */
 368       NEXT_PASS (pass_split_crit_edges);
 369       NEXT_PASS (pass_late_warn_uninitialized);
 370       NEXT_PASS (pass_local_pure_const);
 371       NEXT_PASS (pass_modref);
 372       /* uncprop replaces constants by SSA names.  This makes analysis harder
 373          and thus it should be run last.  */
 374       NEXT_PASS (pass_uncprop);
 375   POP_INSERT_PASSES ()
 376   NEXT_PASS (pass_all_optimizations_g);
 377   PUSH_INSERT_PASSES_WITHIN (pass_all_optimizations_g)
 378       /* The idea is that with -Og we do not perform any IPA optimization
 379          so post-IPA work should be restricted to semantically required
 380          passes and all optimization work is done early.  */
 381       NEXT_PASS (pass_remove_cgraph_callee_edges);
 382       NEXT_PASS (pass_strip_predict_hints, false /* early_p */);
 383       /* Lower remaining pieces of GIMPLE.  */
 384       NEXT_PASS (pass_lower_complex);
 385       NEXT_PASS (pass_lower_vector_ssa);
 386       NEXT_PASS (pass_lower_switch);
 387       /* Perform simple scalar cleanup which is constant/copy propagation.  */
 388       NEXT_PASS (pass_ccp, true /* nonzero_p */);
 389       NEXT_PASS (pass_post_ipa_warn);
 390       NEXT_PASS (pass_object_sizes);
 391       /* Fold remaining builtins.  */
 392       NEXT_PASS (pass_fold_builtins);
 393       NEXT_PASS (pass_strlen);
 394       /* Copy propagation also copy-propagates constants, this is necessary
 395          to forward object-size and builtin folding results properly.  */
 396       NEXT_PASS (pass_copy_prop);
 397       NEXT_PASS (pass_dce);
 398       NEXT_PASS (pass_sancov);
 399       NEXT_PASS (pass_asan);
 400       NEXT_PASS (pass_tsan);
 401       /* ???  We do want some kind of loop invariant motion, but we possibly
 402          need to adjust LIM to be more friendly towards preserving accurate
 403          debug information here.  */
 404       /* Split critical edges before late uninit warning to reduce the
 405          number of false positives from it.  */
 406       NEXT_PASS (pass_split_crit_edges);
 407       NEXT_PASS (pass_late_warn_uninitialized);
 408       /* uncprop replaces constants by SSA names.  This makes analysis harder
 409          and thus it should be run last.  */
 410       NEXT_PASS (pass_uncprop);
 411   POP_INSERT_PASSES ()
 412   NEXT_PASS (pass_assumptions);
 413   NEXT_PASS (pass_tm_init);
 414   PUSH_INSERT_PASSES_WITHIN (pass_tm_init)
 415       NEXT_PASS (pass_tm_mark);
 416       NEXT_PASS (pass_tm_memopt);
 417       NEXT_PASS (pass_tm_edges);
 418   POP_INSERT_PASSES ()
 419   NEXT_PASS (pass_simduid_cleanup);
 420   NEXT_PASS (pass_vtable_verify);
 421   NEXT_PASS (pass_lower_vaarg);
 422   NEXT_PASS (pass_lower_vector);
 423   NEXT_PASS (pass_lower_complex_O0);
 424   NEXT_PASS (pass_sancov_O0);
 425   NEXT_PASS (pass_lower_switch_O0);
 426   NEXT_PASS (pass_asan_O0);
 427   NEXT_PASS (pass_tsan_O0);
 428   NEXT_PASS (pass_sanopt);
 429   NEXT_PASS (pass_cleanup_eh);
 430   NEXT_PASS (pass_lower_resx);
 431   NEXT_PASS (pass_nrv);
 432   NEXT_PASS (pass_gimple_isel);
 433   NEXT_PASS (pass_harden_conditional_branches);
 434   NEXT_PASS (pass_harden_compares);
 435   NEXT_PASS (pass_warn_access, /*early=*/false);
 436   NEXT_PASS (pass_cleanup_cfg_post_optimizing);
 437   NEXT_PASS (pass_warn_function_noreturn);
 438
 439   NEXT_PASS (pass_expand);
 440
 441   NEXT_PASS (pass_rest_of_compilation);
 442   PUSH_INSERT_PASSES_WITHIN (pass_rest_of_compilation)
 443       NEXT_PASS (pass_instantiate_virtual_regs);
 444       NEXT_PASS (pass_into_cfg_layout_mode);
 445       NEXT_PASS (pass_jump);
 446       NEXT_PASS (pass_lower_subreg);
 447       NEXT_PASS (pass_df_initialize_opt);
 448       NEXT_PASS (pass_cse);
 449       NEXT_PASS (pass_rtl_fwprop);
 450       NEXT_PASS (pass_rtl_cprop);
 451       NEXT_PASS (pass_rtl_pre);
 452       NEXT_PASS (pass_rtl_hoist);
 453       NEXT_PASS (pass_rtl_cprop);
 454       NEXT_PASS (pass_rtl_store_motion);
 455       NEXT_PASS (pass_cse_after_global_opts);
 456       NEXT_PASS (pass_rtl_ifcvt);
 457       NEXT_PASS (pass_reginfo_init);
 458       /* Perform loop optimizations.  It might be better to do them a bit
 459          sooner, but we want the profile feedback to work more
 460          efficiently.  */
 461       NEXT_PASS (pass_loop2);
 462       PUSH_INSERT_PASSES_WITHIN (pass_loop2)
 463           NEXT_PASS (pass_rtl_loop_init);
 464           NEXT_PASS (pass_rtl_move_loop_invariants);
 465           NEXT_PASS (pass_rtl_unroll_loops);
 466           NEXT_PASS (pass_rtl_doloop);
 467           NEXT_PASS (pass_rtl_loop_done);
 468       POP_INSERT_PASSES ()
 469       NEXT_PASS (pass_lower_subreg2);
 470       NEXT_PASS (pass_web);
 471       NEXT_PASS (pass_rtl_cprop);
 472       NEXT_PASS (pass_cse2);
 473       NEXT_PASS (pass_rtl_dse1);
 474       NEXT_PASS (pass_rtl_fwprop_addr);
 475       NEXT_PASS (pass_inc_dec);
 476       NEXT_PASS (pass_initialize_regs);
 477       NEXT_PASS (pass_ud_rtl_dce);
 478       NEXT_PASS (pass_combine);
 479       NEXT_PASS (pass_if_after_combine);
 480       NEXT_PASS (pass_jump_after_combine);
 481       NEXT_PASS (pass_partition_blocks);
 482       NEXT_PASS (pass_outof_cfg_layout_mode);
 483       NEXT_PASS (pass_split_all_insns);
 484       NEXT_PASS (pass_lower_subreg3);
 485       NEXT_PASS (pass_df_initialize_no_opt);
 486       NEXT_PASS (pass_stack_ptr_mod);
 487       NEXT_PASS (pass_mode_switching);
 488       NEXT_PASS (pass_match_asm_constraints);
 489       NEXT_PASS (pass_sms);
 490       NEXT_PASS (pass_live_range_shrinkage);
 491       NEXT_PASS (pass_sched);
 492       NEXT_PASS (pass_early_remat);
 493       NEXT_PASS (pass_ira);
 494       NEXT_PASS (pass_reload);
 495       NEXT_PASS (pass_postreload);
 496       PUSH_INSERT_PASSES_WITHIN (pass_postreload)
 497           NEXT_PASS (pass_postreload_cse);
 498           NEXT_PASS (pass_gcse2);
 499           NEXT_PASS (pass_split_after_reload);
 500           NEXT_PASS (pass_ree);
 501           NEXT_PASS (pass_compare_elim_after_reload);
 502           NEXT_PASS (pass_thread_prologue_and_epilogue);
 503           NEXT_PASS (pass_rtl_dse2);
 504           NEXT_PASS (pass_stack_adjustments);
 505           NEXT_PASS (pass_jump2);
 506           NEXT_PASS (pass_duplicate_computed_gotos);
 507           NEXT_PASS (pass_sched_fusion);
 508           NEXT_PASS (pass_peephole2);
 509           NEXT_PASS (pass_if_after_reload);
 510           NEXT_PASS (pass_regrename);
 511           NEXT_PASS (pass_cprop_hardreg);
 512           NEXT_PASS (pass_fast_rtl_dce);
 513           NEXT_PASS (pass_reorder_blocks);
 514           NEXT_PASS (pass_leaf_regs);
 515           NEXT_PASS (pass_split_before_sched2);
 516           NEXT_PASS (pass_sched2);
 517           NEXT_PASS (pass_stack_regs);
 518           PUSH_INSERT_PASSES_WITHIN (pass_stack_regs)
 519               NEXT_PASS (pass_split_before_regstack);
 520               NEXT_PASS (pass_stack_regs_run);
 521           POP_INSERT_PASSES ()
 522       POP_INSERT_PASSES ()
 523       NEXT_PASS (pass_late_compilation);
 524       PUSH_INSERT_PASSES_WITHIN (pass_late_compilation)
 525           NEXT_PASS (pass_zero_call_used_regs);
 526           NEXT_PASS (pass_compute_alignments);
 527           NEXT_PASS (pass_variable_tracking);
 528           NEXT_PASS (pass_free_cfg);
 529           NEXT_PASS (pass_machine_reorg);
 530           NEXT_PASS (pass_cleanup_barriers);
 531           NEXT_PASS (pass_delay_slots);
 532           NEXT_PASS (pass_split_for_shorten_branches);
 533           NEXT_PASS (pass_convert_to_eh_region_ranges);
 534           NEXT_PASS (pass_shorten_branches);
 535           NEXT_PASS (pass_set_nothrow_function_flags);
 536           NEXT_PASS (pass_dwarf2_frame);
 537           NEXT_PASS (pass_final);
 538       POP_INSERT_PASSES ()
 539       NEXT_PASS (pass_df_finish);
 540   POP_INSERT_PASSES ()
 541   NEXT_PASS (pass_clean_state);
 542   TERMINATE_PASS_LIST (all_passes)