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_harden_control_flow_redundancy);
 197   NEXT_PASS (pass_all_optimizations);
 198   PUSH_INSERT_PASSES_WITHIN (pass_all_optimizations)
 199       NEXT_PASS (pass_remove_cgraph_callee_edges);
 200       /* Initial scalar cleanups before alias computation.
 201          They ensure memory accesses are not indirect wherever possible.  */
 202       NEXT_PASS (pass_strip_predict_hints, false /* early_p */);
 203       NEXT_PASS (pass_ccp, true /* nonzero_p */);
 204       /* After CCP we rewrite no longer addressed locals into SSA
 205          form if possible.  */
 206       NEXT_PASS (pass_object_sizes);
 207       NEXT_PASS (pass_post_ipa_warn);
 208       /* Must run before loop unrolling.  */
 209       NEXT_PASS (pass_warn_access, /*early=*/true);
 210       /* Profile count may overflow as a result of inlinining very large
 211          loop nests.  This pass should run before any late pass that makes
 212          use of profile.  */
 213       NEXT_PASS (pass_rebuild_frequencies);
 214       NEXT_PASS (pass_complete_unrolli);
 215       NEXT_PASS (pass_backprop);
 216       NEXT_PASS (pass_phiprop);
 217       NEXT_PASS (pass_forwprop);
 218       /* pass_build_alias is a dummy pass that ensures that we
 219          execute TODO_rebuild_alias at this point.  */
 220       NEXT_PASS (pass_build_alias);
 221       NEXT_PASS (pass_return_slot);
 222       NEXT_PASS (pass_fre, true /* may_iterate */);
 223       NEXT_PASS (pass_merge_phi);
 224       NEXT_PASS (pass_thread_jumps_full, /*first=*/true);
 225       NEXT_PASS (pass_vrp, false /* final_p*/);
 226       NEXT_PASS (pass_dse);
 227       NEXT_PASS (pass_dce);
 228       /* pass_stdarg is always run and at this point we execute
 229          TODO_remove_unused_locals to prune CLOBBERs of dead
 230          variables which are otherwise a churn on alias walkings.  */
 231       NEXT_PASS (pass_stdarg);
 232       NEXT_PASS (pass_call_cdce);
 233       NEXT_PASS (pass_cselim);
 234       NEXT_PASS (pass_copy_prop);
 235       NEXT_PASS (pass_tree_ifcombine);
 236       NEXT_PASS (pass_merge_phi);
 237       NEXT_PASS (pass_phiopt, false /* early_p */);
 238       NEXT_PASS (pass_tail_recursion);
 239       NEXT_PASS (pass_ch);
 240       NEXT_PASS (pass_lower_complex);
 241       NEXT_PASS (pass_lower_bitint);
 242       NEXT_PASS (pass_sra);
 243       /* The dom pass will also resolve all __builtin_constant_p calls
 244          that are still there to 0.  This has to be done after some
 245          propagations have already run, but before some more dead code
 246          is removed, and this place fits nicely.  Remember this when
 247          trying to move or duplicate pass_dominator somewhere earlier.  */
 248       NEXT_PASS (pass_thread_jumps, /*first=*/true);
 249       NEXT_PASS (pass_dominator, true /* may_peel_loop_headers_p */);
 250       /* Threading can leave many const/copy propagations in the IL.
 251          Clean them up.  Failure to do so well can lead to false
 252          positives from warnings for erroneous code.  */
 253       NEXT_PASS (pass_copy_prop);
 254       /* Identify paths that should never be executed in a conforming
 255          program and isolate those paths.  */
 256       NEXT_PASS (pass_isolate_erroneous_paths);
 257       NEXT_PASS (pass_reassoc, true /* early_p */);
 258       NEXT_PASS (pass_dce);
 259       NEXT_PASS (pass_forwprop);
 260       NEXT_PASS (pass_phiopt, false /* early_p */);
 261       NEXT_PASS (pass_ccp, true /* nonzero_p */);
 262       /* After CCP we rewrite no longer addressed locals into SSA
 263          form if possible.  */
 264       NEXT_PASS (pass_expand_powcabs);
 265       NEXT_PASS (pass_optimize_bswap);
 266       NEXT_PASS (pass_laddress);
 267       NEXT_PASS (pass_lim);
 268       NEXT_PASS (pass_walloca, false);
 269       NEXT_PASS (pass_pre);
 270       NEXT_PASS (pass_sink_code, false /* unsplit edges */);
 271       NEXT_PASS (pass_sancov);
 272       NEXT_PASS (pass_asan);
 273       NEXT_PASS (pass_tsan);
 274       NEXT_PASS (pass_dse, true /* use DR analysis */);
 275       NEXT_PASS (pass_dce);
 276       /* Pass group that runs when 1) enabled, 2) there are loops
 277          in the function.  Make sure to run pass_fix_loops before
 278          to discover/remove loops before running the gate function
 279          of pass_tree_loop.  */
 280       NEXT_PASS (pass_fix_loops);
 281       NEXT_PASS (pass_tree_loop);
 282       PUSH_INSERT_PASSES_WITHIN (pass_tree_loop)
 283           /* Before loop_init we rewrite no longer addressed locals into SSA
 284              form if possible.  */
 285           NEXT_PASS (pass_tree_loop_init);
 286           NEXT_PASS (pass_tree_unswitch);
 287           NEXT_PASS (pass_loop_split);
 288           NEXT_PASS (pass_scev_cprop);
 289           NEXT_PASS (pass_loop_versioning);
 290           NEXT_PASS (pass_loop_jam);
 291           /* All unswitching, final value replacement and splitting can expose
 292              empty loops.  Remove them now.  */
 293           NEXT_PASS (pass_cd_dce, false /* update_address_taken_p */);
 294           NEXT_PASS (pass_iv_canon);
 295           NEXT_PASS (pass_loop_distribution);
 296           NEXT_PASS (pass_linterchange);
 297           NEXT_PASS (pass_copy_prop);
 298           NEXT_PASS (pass_graphite);
 299           PUSH_INSERT_PASSES_WITHIN (pass_graphite)
 300               NEXT_PASS (pass_graphite_transforms);
 301               NEXT_PASS (pass_lim);
 302               NEXT_PASS (pass_copy_prop);
 303               NEXT_PASS (pass_dce);
 304           POP_INSERT_PASSES ()
 305           NEXT_PASS (pass_parallelize_loops, false /* oacc_kernels_p */);
 306           NEXT_PASS (pass_expand_omp_ssa);
 307           NEXT_PASS (pass_ch_vect);
 308           NEXT_PASS (pass_if_conversion);
 309           /* pass_vectorize must immediately follow pass_if_conversion.
 310              Please do not add any other passes in between.  */
 311           NEXT_PASS (pass_vectorize);
 312           PUSH_INSERT_PASSES_WITHIN (pass_vectorize)
 313               NEXT_PASS (pass_dce);
 314           POP_INSERT_PASSES ()
 315           NEXT_PASS (pass_predcom);
 316           NEXT_PASS (pass_complete_unroll);
 317           NEXT_PASS (pass_pre_slp_scalar_cleanup);
 318           PUSH_INSERT_PASSES_WITHIN (pass_pre_slp_scalar_cleanup)
 319               NEXT_PASS (pass_fre, false /* may_iterate */);
 320               NEXT_PASS (pass_dse);
 321           POP_INSERT_PASSES ()
 322           NEXT_PASS (pass_slp_vectorize);
 323           NEXT_PASS (pass_loop_prefetch);
 324           /* Run IVOPTs after the last pass that uses data-reference analysis
 325              as that doesn't handle TARGET_MEM_REFs.  */
 326           NEXT_PASS (pass_iv_optimize);
 327           NEXT_PASS (pass_lim);
 328           NEXT_PASS (pass_tree_loop_done);
 329       POP_INSERT_PASSES ()
 330       /* Pass group that runs when pass_tree_loop is disabled or there
 331          are no loops in the function.  */
 332       NEXT_PASS (pass_tree_no_loop);
 333       PUSH_INSERT_PASSES_WITHIN (pass_tree_no_loop)
 334           NEXT_PASS (pass_slp_vectorize);
 335       POP_INSERT_PASSES ()
 336       NEXT_PASS (pass_simduid_cleanup);
 337       NEXT_PASS (pass_lower_vector_ssa);
 338       NEXT_PASS (pass_lower_switch);
 339       NEXT_PASS (pass_cse_sincos);
 340       NEXT_PASS (pass_cse_reciprocals);
 341       NEXT_PASS (pass_reassoc, false /* early_p */);
 342       NEXT_PASS (pass_strength_reduction);
 343       NEXT_PASS (pass_split_paths);
 344       NEXT_PASS (pass_tracer);
 345       NEXT_PASS (pass_fre, false /* may_iterate */);
 346       /* After late FRE we rewrite no longer addressed locals into SSA
 347          form if possible.  */
 348       NEXT_PASS (pass_thread_jumps, /*first=*/false);
 349       NEXT_PASS (pass_dominator, false /* may_peel_loop_headers_p */);
 350       NEXT_PASS (pass_strlen);
 351       NEXT_PASS (pass_thread_jumps_full, /*first=*/false);
 352       NEXT_PASS (pass_vrp, true /* final_p */);
 353       /* Run CCP to compute alignment and nonzero bits.  */
 354       NEXT_PASS (pass_ccp, true /* nonzero_p */);
 355       NEXT_PASS (pass_warn_restrict);
 356       NEXT_PASS (pass_dse);
 357       NEXT_PASS (pass_dce, true /* update_address_taken_p */);
 358       /* After late DCE we rewrite no longer addressed locals into SSA
 359          form if possible.  */
 360       NEXT_PASS (pass_forwprop);
 361       NEXT_PASS (pass_sink_code, true /* unsplit edges */);
 362       NEXT_PASS (pass_phiopt, false /* early_p */);
 363       NEXT_PASS (pass_fold_builtins);
 364       NEXT_PASS (pass_optimize_widening_mul);
 365       NEXT_PASS (pass_store_merging);
 366       /* If DCE is not run before checking for uninitialized uses,
 367          we may get false warnings (e.g., testsuite/gcc.dg/uninit-5.c).
 368          However, this also causes us to misdiagnose cases that should be
 369          real warnings (e.g., testsuite/gcc.dg/pr18501.c).  */
 370       NEXT_PASS (pass_cd_dce, false /* update_address_taken_p */);
 371       NEXT_PASS (pass_tail_calls);
 372       /* Split critical edges before late uninit warning to reduce the
 373          number of false positives from it.  */
 374       NEXT_PASS (pass_split_crit_edges);
 375       NEXT_PASS (pass_late_warn_uninitialized);
 376       NEXT_PASS (pass_local_pure_const);
 377       NEXT_PASS (pass_modref);
 378       /* uncprop replaces constants by SSA names.  This makes analysis harder
 379          and thus it should be run last.  */
 380       NEXT_PASS (pass_uncprop);
 381   POP_INSERT_PASSES ()
 382   NEXT_PASS (pass_all_optimizations_g);
 383   PUSH_INSERT_PASSES_WITHIN (pass_all_optimizations_g)
 384       /* The idea is that with -Og we do not perform any IPA optimization
 385          so post-IPA work should be restricted to semantically required
 386          passes and all optimization work is done early.  */
 387       NEXT_PASS (pass_remove_cgraph_callee_edges);
 388       NEXT_PASS (pass_strip_predict_hints, false /* early_p */);
 389       /* Lower remaining pieces of GIMPLE.  */
 390       NEXT_PASS (pass_lower_complex);
 391       NEXT_PASS (pass_lower_bitint);
 392       NEXT_PASS (pass_lower_vector_ssa);
 393       NEXT_PASS (pass_lower_switch);
 394       /* Perform simple scalar cleanup which is constant/copy propagation.  */
 395       NEXT_PASS (pass_ccp, true /* nonzero_p */);
 396       NEXT_PASS (pass_post_ipa_warn);
 397       NEXT_PASS (pass_object_sizes);
 398       /* Fold remaining builtins.  */
 399       NEXT_PASS (pass_fold_builtins);
 400       NEXT_PASS (pass_strlen);
 401       /* Copy propagation also copy-propagates constants, this is necessary
 402          to forward object-size and builtin folding results properly.  */
 403       NEXT_PASS (pass_copy_prop);
 404       NEXT_PASS (pass_dce);
 405       /* Profile count may overflow as a result of inlinining very large
 406          loop nests.  This pass should run before any late pass that makes
 407          use of profile.  */
 408       NEXT_PASS (pass_rebuild_frequencies);
 409       NEXT_PASS (pass_sancov);
 410       NEXT_PASS (pass_asan);
 411       NEXT_PASS (pass_tsan);
 412       /* ???  We do want some kind of loop invariant motion, but we possibly
 413          need to adjust LIM to be more friendly towards preserving accurate
 414          debug information here.  */
 415       /* Split critical edges before late uninit warning to reduce the
 416          number of false positives from it.  */
 417       NEXT_PASS (pass_split_crit_edges);
 418       NEXT_PASS (pass_late_warn_uninitialized);
 419       /* uncprop replaces constants by SSA names.  This makes analysis harder
 420          and thus it should be run last.  */
 421       NEXT_PASS (pass_uncprop);
 422   POP_INSERT_PASSES ()
 423   NEXT_PASS (pass_assumptions);
 424   NEXT_PASS (pass_tm_init);
 425   PUSH_INSERT_PASSES_WITHIN (pass_tm_init)
 426       NEXT_PASS (pass_tm_mark);
 427       NEXT_PASS (pass_tm_memopt);
 428       NEXT_PASS (pass_tm_edges);
 429   POP_INSERT_PASSES ()
 430   NEXT_PASS (pass_simduid_cleanup);
 431   NEXT_PASS (pass_vtable_verify);
 432   NEXT_PASS (pass_lower_vaarg);
 433   NEXT_PASS (pass_lower_vector);
 434   NEXT_PASS (pass_lower_complex_O0);
 435   NEXT_PASS (pass_lower_bitint_O0);
 436   NEXT_PASS (pass_sancov_O0);
 437   NEXT_PASS (pass_lower_switch_O0);
 438   NEXT_PASS (pass_asan_O0);
 439   NEXT_PASS (pass_tsan_O0);
 440   NEXT_PASS (pass_sanopt);
 441   NEXT_PASS (pass_cleanup_eh);
 442   NEXT_PASS (pass_lower_resx);
 443   NEXT_PASS (pass_nrv);
 444   NEXT_PASS (pass_gimple_isel);
 445   NEXT_PASS (pass_harden_conditional_branches);
 446   NEXT_PASS (pass_harden_compares);
 447   NEXT_PASS (pass_warn_access, /*early=*/false);
 448   NEXT_PASS (pass_cleanup_cfg_post_optimizing);
 449   NEXT_PASS (pass_warn_function_noreturn);
 450
 451   NEXT_PASS (pass_expand);
 452
 453   NEXT_PASS (pass_rest_of_compilation);
 454   PUSH_INSERT_PASSES_WITHIN (pass_rest_of_compilation)
 455       NEXT_PASS (pass_instantiate_virtual_regs);
 456       NEXT_PASS (pass_into_cfg_layout_mode);
 457       NEXT_PASS (pass_jump);
 458       NEXT_PASS (pass_lower_subreg);
 459       NEXT_PASS (pass_df_initialize_opt);
 460       NEXT_PASS (pass_cse);
 461       NEXT_PASS (pass_rtl_fwprop);
 462       NEXT_PASS (pass_rtl_cprop);
 463       NEXT_PASS (pass_rtl_pre);
 464       NEXT_PASS (pass_rtl_hoist);
 465       NEXT_PASS (pass_rtl_cprop);
 466       NEXT_PASS (pass_rtl_store_motion);
 467       NEXT_PASS (pass_cse_after_global_opts);
 468       NEXT_PASS (pass_rtl_ifcvt);
 469       NEXT_PASS (pass_reginfo_init);
 470       /* Perform loop optimizations.  It might be better to do them a bit
 471          sooner, but we want the profile feedback to work more
 472          efficiently.  */
 473       NEXT_PASS (pass_loop2);
 474       PUSH_INSERT_PASSES_WITHIN (pass_loop2)
 475           NEXT_PASS (pass_rtl_loop_init);
 476           NEXT_PASS (pass_rtl_move_loop_invariants);
 477           NEXT_PASS (pass_rtl_unroll_loops);
 478           NEXT_PASS (pass_rtl_doloop);
 479           NEXT_PASS (pass_rtl_loop_done);
 480       POP_INSERT_PASSES ()
 481       NEXT_PASS (pass_lower_subreg2);
 482       NEXT_PASS (pass_web);
 483       NEXT_PASS (pass_rtl_cprop);
 484       NEXT_PASS (pass_cse2);
 485       NEXT_PASS (pass_rtl_dse1);
 486       NEXT_PASS (pass_rtl_fwprop_addr);
 487       NEXT_PASS (pass_inc_dec);
 488       NEXT_PASS (pass_initialize_regs);
 489       NEXT_PASS (pass_ud_rtl_dce);
 490       NEXT_PASS (pass_combine);
 491       NEXT_PASS (pass_if_after_combine);
 492       NEXT_PASS (pass_jump_after_combine);
 493       NEXT_PASS (pass_partition_blocks);
 494       NEXT_PASS (pass_outof_cfg_layout_mode);
 495       NEXT_PASS (pass_split_all_insns);
 496       NEXT_PASS (pass_lower_subreg3);
 497       NEXT_PASS (pass_df_initialize_no_opt);
 498       NEXT_PASS (pass_stack_ptr_mod);
 499       NEXT_PASS (pass_mode_switching);
 500       NEXT_PASS (pass_match_asm_constraints);
 501       NEXT_PASS (pass_sms);
 502       NEXT_PASS (pass_live_range_shrinkage);
 503       NEXT_PASS (pass_sched);
 504       NEXT_PASS (pass_early_remat);
 505       NEXT_PASS (pass_ira);
 506       NEXT_PASS (pass_reload);
 507       NEXT_PASS (pass_postreload);
 508       PUSH_INSERT_PASSES_WITHIN (pass_postreload)
 509           NEXT_PASS (pass_postreload_cse);
 510           NEXT_PASS (pass_gcse2);
 511           NEXT_PASS (pass_split_after_reload);
 512           NEXT_PASS (pass_ree);
 513           NEXT_PASS (pass_compare_elim_after_reload);
 514           NEXT_PASS (pass_thread_prologue_and_epilogue);
 515           NEXT_PASS (pass_rtl_dse2);
 516           NEXT_PASS (pass_stack_adjustments);
 517           NEXT_PASS (pass_jump2);
 518           NEXT_PASS (pass_duplicate_computed_gotos);
 519           NEXT_PASS (pass_sched_fusion);
 520           NEXT_PASS (pass_peephole2);
 521           NEXT_PASS (pass_if_after_reload);
 522           NEXT_PASS (pass_regrename);
 523           NEXT_PASS (pass_fold_mem_offsets);
 524           NEXT_PASS (pass_cprop_hardreg);
 525           NEXT_PASS (pass_fast_rtl_dce);
 526           NEXT_PASS (pass_reorder_blocks);
 527           NEXT_PASS (pass_leaf_regs);
 528           NEXT_PASS (pass_split_before_sched2);
 529           NEXT_PASS (pass_sched2);
 530           NEXT_PASS (pass_stack_regs);
 531           PUSH_INSERT_PASSES_WITHIN (pass_stack_regs)
 532               NEXT_PASS (pass_split_before_regstack);
 533               NEXT_PASS (pass_stack_regs_run);
 534           POP_INSERT_PASSES ()
 535       POP_INSERT_PASSES ()
 536       NEXT_PASS (pass_late_compilation);
 537       PUSH_INSERT_PASSES_WITHIN (pass_late_compilation)
 538           NEXT_PASS (pass_zero_call_used_regs);
 539           NEXT_PASS (pass_compute_alignments);
 540           NEXT_PASS (pass_variable_tracking);
 541           NEXT_PASS (pass_free_cfg);
 542           NEXT_PASS (pass_machine_reorg);
 543           NEXT_PASS (pass_cleanup_barriers);
 544           NEXT_PASS (pass_delay_slots);
 545           NEXT_PASS (pass_split_for_shorten_branches);
 546           NEXT_PASS (pass_convert_to_eh_region_ranges);
 547           NEXT_PASS (pass_shorten_branches);
 548           NEXT_PASS (pass_set_nothrow_function_flags);
 549           NEXT_PASS (pass_dwarf2_frame);
 550           NEXT_PASS (pass_final);
 551       POP_INSERT_PASSES ()
 552       NEXT_PASS (pass_df_finish);
 553   POP_INSERT_PASSES ()
 554   NEXT_PASS (pass_clean_state);
 555   TERMINATE_PASS_LIST (all_passes)