gcc/tree-pass.h

   1 /* Definitions for describing one tree-ssa optimization pass.
   2    Copyright (C) 2004-2013 Free Software Foundation, Inc.
   3    Contributed by Richard Henderson <rth@redhat.com>
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  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
  22 #ifndef GCC_TREE_PASS_H
  23 #define GCC_TREE_PASS_H 1
  24
  25 #include "timevar.h"
  26 #include "dumpfile.h"
  27
  28 /* Optimization pass type.  */
  29 enum opt_pass_type
  30 {
  31   GIMPLE_PASS,
  32   RTL_PASS,
  33   SIMPLE_IPA_PASS,
  34   IPA_PASS
  35 };
  36
  37 /* Describe one pass; this is the common part shared across different pass
  38    types.  */
  39 struct opt_pass
  40 {
  41   /* Optimization pass type.  */
  42   enum opt_pass_type type;
  43
  44   /* Terse name of the pass used as a fragment of the dump file
  45      name.  If the name starts with a star, no dump happens. */
  46   const char *name;
  47
  48   /* The -fopt-info optimization group flags as defined in dumpfile.h. */
  49   unsigned int optinfo_flags;
  50
  51   /* If non-null, this pass and all sub-passes are executed only if
  52      the function returns true.  */
  53   bool (*gate) (void);
  54
  55   /* This is the code to run.  If null, then there should be sub-passes
  56      otherwise this pass does nothing.  The return value contains
  57      TODOs to execute in addition to those in TODO_flags_finish.   */
  58   unsigned int (*execute) (void);
  59
  60   /* A list of sub-passes to run, dependent on gate predicate.  */
  61   struct opt_pass *sub;
  62
  63   /* Next in the list of passes to run, independent of gate predicate.  */
  64   struct opt_pass *next;
  65
  66   /* Static pass number, used as a fragment of the dump file name.  */
  67   int static_pass_number;
  68
  69   /* The timevar id associated with this pass.  */
  70   /* ??? Ideally would be dynamically assigned.  */
  71   timevar_id_t tv_id;
  72
  73   /* Sets of properties input and output from this pass.  */
  74   unsigned int properties_required;
  75   unsigned int properties_provided;
  76   unsigned int properties_destroyed;
  77
  78   /* Flags indicating common sets things to do before and after.  */
  79   unsigned int todo_flags_start;
  80   unsigned int todo_flags_finish;
  81 };
  82
  83 /* Description of GIMPLE pass.  */
  84 struct gimple_opt_pass
  85 {
  86   struct opt_pass pass;
  87 };
  88
  89 /* Description of RTL pass.  */
  90 struct rtl_opt_pass
  91 {
  92   struct opt_pass pass;
  93 };
  94
  95 struct varpool_node;
  96 struct cgraph_node;
  97 struct lto_symtab_encoder_d;
  98
  99 /* Description of IPA pass with generate summary, write, execute, read and
 100    transform stages.  */
 101 struct ipa_opt_pass_d
 102 {
 103   struct opt_pass pass;
 104
 105   /* IPA passes can analyze function body and variable initializers
 106       using this hook and produce summary.  */
 107   void (*generate_summary) (void);
 108
 109   /* This hook is used to serialize IPA summaries on disk.  */
 110   void (*write_summary) (void);
 111
 112   /* This hook is used to deserialize IPA summaries from disk.  */
 113   void (*read_summary) (void);
 114
 115   /* This hook is used to serialize IPA optimization summaries on disk.  */
 116   void (*write_optimization_summary) (void);
 117
 118   /* This hook is used to deserialize IPA summaries from disk.  */
 119   void (*read_optimization_summary) (void);
 120
 121   /* Hook to convert gimple stmt uids into true gimple statements.  The second
 122      parameter is an array of statements indexed by their uid. */
 123   void (*stmt_fixup) (struct cgraph_node *, gimple *);
 124
 125   /* Results of interprocedural propagation of an IPA pass is applied to
 126      function body via this hook.  */
 127   unsigned int function_transform_todo_flags_start;
 128   unsigned int (*function_transform) (struct cgraph_node *);
 129   void (*variable_transform) (struct varpool_node *);
 130 };
 131
 132 /* Description of simple IPA pass.  Simple IPA passes have just one execute
 133    hook.  */
 134 struct simple_ipa_opt_pass
 135 {
 136   struct opt_pass pass;
 137 };
 138
 139 /* Pass properties.  */
 140 #define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
 141 #define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
 142 #define PROP_gimple_leh         (1 << 2)        /* lowered eh */
 143 #define PROP_cfg                (1 << 3)
 144 #define PROP_ssa                (1 << 5)
 145 #define PROP_no_crit_edges      (1 << 6)
 146 #define PROP_rtl                (1 << 7)
 147 #define PROP_gimple_lomp        (1 << 8)        /* lowered OpenMP directives */
 148 #define PROP_cfglayout          (1 << 9)        /* cfglayout mode on RTL */
 149 #define PROP_gimple_lcx         (1 << 10)       /* lowered complex */
 150 #define PROP_loops              (1 << 11)       /* preserve loop structures */
 151 #define PROP_gimple_lvec        (1 << 12)       /* lowered vector */
 152
 153 #define PROP_trees \
 154   (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp)
 155
 156 /* To-do flags.  */
 157 #define TODO_do_not_ggc_collect         (1 << 1)
 158 #define TODO_verify_ssa                 (1 << 2)
 159 #define TODO_verify_flow                (1 << 3)
 160 #define TODO_verify_stmts               (1 << 4)
 161 #define TODO_cleanup_cfg                (1 << 5)
 162 #define TODO_dump_symtab                (1 << 7)
 163 #define TODO_remove_functions           (1 << 8)
 164 #define TODO_rebuild_frequencies        (1 << 9)
 165 #define TODO_verify_rtl_sharing         (1 << 10)
 166
 167 /* To-do flags for calls to update_ssa.  */
 168
 169 /* Update the SSA form inserting PHI nodes for newly exposed symbols
 170    and virtual names marked for updating.  When updating real names,
 171    only insert PHI nodes for a real name O_j in blocks reached by all
 172    the new and old definitions for O_j.  If the iterated dominance
 173    frontier for O_j is not pruned, we may end up inserting PHI nodes
 174    in blocks that have one or more edges with no incoming definition
 175    for O_j.  This would lead to uninitialized warnings for O_j's
 176    symbol.  */
 177 #define TODO_update_ssa                 (1 << 11)
 178
 179 /* Update the SSA form without inserting any new PHI nodes at all.
 180    This is used by passes that have either inserted all the PHI nodes
 181    themselves or passes that need only to patch use-def and def-def
 182    chains for virtuals (e.g., DCE).  */
 183 #define TODO_update_ssa_no_phi          (1 << 12)
 184
 185 /* Insert PHI nodes everywhere they are needed.  No pruning of the
 186    IDF is done.  This is used by passes that need the PHI nodes for
 187    O_j even if it means that some arguments will come from the default
 188    definition of O_j's symbol.
 189
 190    WARNING: If you need to use this flag, chances are that your pass
 191    may be doing something wrong.  Inserting PHI nodes for an old name
 192    where not all edges carry a new replacement may lead to silent
 193    codegen errors or spurious uninitialized warnings.  */
 194 #define TODO_update_ssa_full_phi        (1 << 13)
 195
 196 /* Passes that update the SSA form on their own may want to delegate
 197    the updating of virtual names to the generic updater.  Since FUD
 198    chains are easier to maintain, this simplifies the work they need
 199    to do.  NOTE: If this flag is used, any OLD->NEW mappings for real
 200    names are explicitly destroyed and only the symbols marked for
 201    renaming are processed.  */
 202 #define TODO_update_ssa_only_virtuals   (1 << 14)
 203
 204 /* Some passes leave unused local variables that can be removed from
 205    cfun->local_decls.  This reduces the size of dump files
 206    and the memory footprint for VAR_DECLs.  */
 207 #define TODO_remove_unused_locals       (1 << 15)
 208
 209 /* Call df_finish at the end of the pass.  This is done after all of
 210    the dumpers have been allowed to run so that they have access to
 211    the instance before it is destroyed.  */
 212 #define TODO_df_finish                  (1 << 17)
 213
 214 /* Call df_verify at the end of the pass if checking is enabled.  */
 215 #define TODO_df_verify                  (1 << 18)
 216
 217 /* Internally used for the first instance of a pass.  */
 218 #define TODO_mark_first_instance        (1 << 19)
 219
 220 /* Rebuild aliasing info.  */
 221 #define TODO_rebuild_alias              (1 << 20)
 222
 223 /* Rebuild the addressable-vars bitmap and do register promotion.  */
 224 #define TODO_update_address_taken       (1 << 21)
 225
 226 /* Rebuild the callgraph edges.  */
 227 #define TODO_rebuild_cgraph_edges       (1 << 22)
 228
 229 /* Internally used in execute_function_todo().  */
 230 #define TODO_update_ssa_any             \
 231     (TODO_update_ssa                    \
 232      | TODO_update_ssa_no_phi           \
 233      | TODO_update_ssa_full_phi         \
 234      | TODO_update_ssa_only_virtuals)
 235
 236 #define TODO_verify_all \
 237   (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts)
 238
 239
 240 /* Register pass info. */
 241
 242 enum pass_positioning_ops
 243 {
 244   PASS_POS_INSERT_AFTER,  /* Insert after the reference pass.  */
 245   PASS_POS_INSERT_BEFORE, /* Insert before the reference pass.  */
 246   PASS_POS_REPLACE        /* Replace the reference pass.  */
 247 };
 248
 249 struct register_pass_info
 250 {
 251   struct opt_pass *pass;            /* New pass to register.  */
 252   const char *reference_pass_name;  /* Name of the reference pass for hooking
 253                                        up the new pass.  */
 254   int ref_pass_instance_number;     /* Insert the pass at the specified
 255                                        instance number of the reference pass.
 256                                        Do it for every instance if it is 0.  */
 257   enum pass_positioning_ops pos_op; /* how to insert the new pass.  */
 258 };
 259
 260 extern struct gimple_opt_pass pass_mudflap_1;
 261 extern struct gimple_opt_pass pass_mudflap_2;
 262 extern struct gimple_opt_pass pass_asan;
 263 extern struct gimple_opt_pass pass_asan_O0;
 264 extern struct gimple_opt_pass pass_tsan;
 265 extern struct gimple_opt_pass pass_tsan_O0;
 266 extern struct gimple_opt_pass pass_lower_cf;
 267 extern struct gimple_opt_pass pass_refactor_eh;
 268 extern struct gimple_opt_pass pass_lower_eh;
 269 extern struct gimple_opt_pass pass_lower_eh_dispatch;
 270 extern struct gimple_opt_pass pass_lower_resx;
 271 extern struct gimple_opt_pass pass_build_cfg;
 272 extern struct gimple_opt_pass pass_early_tree_profile;
 273 extern struct gimple_opt_pass pass_cleanup_eh;
 274 extern struct gimple_opt_pass pass_sra;
 275 extern struct gimple_opt_pass pass_sra_early;
 276 extern struct gimple_opt_pass pass_early_ipa_sra;
 277 extern struct gimple_opt_pass pass_tail_recursion;
 278 extern struct gimple_opt_pass pass_tail_calls;
 279 extern struct gimple_opt_pass pass_tree_loop;
 280 extern struct gimple_opt_pass pass_tree_loop_init;
 281 extern struct gimple_opt_pass pass_lim;
 282 extern struct gimple_opt_pass pass_tree_unswitch;
 283 extern struct gimple_opt_pass pass_predcom;
 284 extern struct gimple_opt_pass pass_iv_canon;
 285 extern struct gimple_opt_pass pass_scev_cprop;
 286 extern struct gimple_opt_pass pass_empty_loop;
 287 extern struct gimple_opt_pass pass_record_bounds;
 288 extern struct gimple_opt_pass pass_graphite;
 289 extern struct gimple_opt_pass pass_graphite_transforms;
 290 extern struct gimple_opt_pass pass_if_conversion;
 291 extern struct gimple_opt_pass pass_loop_distribution;
 292 extern struct gimple_opt_pass pass_vectorize;
 293 extern struct gimple_opt_pass pass_slp_vectorize;
 294 extern struct gimple_opt_pass pass_complete_unroll;
 295 extern struct gimple_opt_pass pass_complete_unrolli;
 296 extern struct gimple_opt_pass pass_parallelize_loops;
 297 extern struct gimple_opt_pass pass_loop_prefetch;
 298 extern struct gimple_opt_pass pass_iv_optimize;
 299 extern struct gimple_opt_pass pass_tree_loop_done;
 300 extern struct gimple_opt_pass pass_ch;
 301 extern struct gimple_opt_pass pass_ccp;
 302 extern struct gimple_opt_pass pass_phi_only_cprop;
 303 extern struct gimple_opt_pass pass_build_ssa;
 304 extern struct gimple_opt_pass pass_build_alias;
 305 extern struct gimple_opt_pass pass_build_ealias;
 306 extern struct gimple_opt_pass pass_dominator;
 307 extern struct gimple_opt_pass pass_dce;
 308 extern struct gimple_opt_pass pass_dce_loop;
 309 extern struct gimple_opt_pass pass_cd_dce;
 310 extern struct gimple_opt_pass pass_call_cdce;
 311 extern struct gimple_opt_pass pass_merge_phi;
 312 extern struct gimple_opt_pass pass_split_crit_edges;
 313 extern struct gimple_opt_pass pass_pre;
 314 extern unsigned int tail_merge_optimize (unsigned int);
 315 extern struct gimple_opt_pass pass_profile;
 316 extern struct gimple_opt_pass pass_strip_predict_hints;
 317 extern struct gimple_opt_pass pass_lower_complex_O0;
 318 extern struct gimple_opt_pass pass_lower_complex;
 319 extern struct gimple_opt_pass pass_lower_vector;
 320 extern struct gimple_opt_pass pass_lower_vector_ssa;
 321 extern struct gimple_opt_pass pass_lower_omp;
 322 extern struct gimple_opt_pass pass_diagnose_omp_blocks;
 323 extern struct gimple_opt_pass pass_expand_omp;
 324 extern struct gimple_opt_pass pass_expand_omp_ssa;
 325 extern struct gimple_opt_pass pass_object_sizes;
 326 extern struct gimple_opt_pass pass_strlen;
 327 extern struct gimple_opt_pass pass_fold_builtins;
 328 extern struct gimple_opt_pass pass_stdarg;
 329 extern struct gimple_opt_pass pass_early_warn_uninitialized;
 330 extern struct gimple_opt_pass pass_late_warn_uninitialized;
 331 extern struct gimple_opt_pass pass_cse_reciprocals;
 332 extern struct gimple_opt_pass pass_cse_sincos;
 333 extern struct gimple_opt_pass pass_optimize_bswap;
 334 extern struct gimple_opt_pass pass_optimize_widening_mul;
 335 extern struct gimple_opt_pass pass_warn_function_return;
 336 extern struct gimple_opt_pass pass_warn_function_noreturn;
 337 extern struct gimple_opt_pass pass_cselim;
 338 extern struct gimple_opt_pass pass_phiopt;
 339 extern struct gimple_opt_pass pass_forwprop;
 340 extern struct gimple_opt_pass pass_phiprop;
 341 extern struct gimple_opt_pass pass_tree_ifcombine;
 342 extern struct gimple_opt_pass pass_dse;
 343 extern struct gimple_opt_pass pass_nrv;
 344 extern struct gimple_opt_pass pass_rename_ssa_copies;
 345 extern struct gimple_opt_pass pass_sink_code;
 346 extern struct gimple_opt_pass pass_fre;
 347 extern struct gimple_opt_pass pass_check_data_deps;
 348 extern struct gimple_opt_pass pass_copy_prop;
 349 extern struct gimple_opt_pass pass_vrp;
 350 extern struct gimple_opt_pass pass_uncprop;
 351 extern struct gimple_opt_pass pass_return_slot;
 352 extern struct gimple_opt_pass pass_reassoc;
 353 extern struct gimple_opt_pass pass_rebuild_cgraph_edges;
 354 extern struct gimple_opt_pass pass_remove_cgraph_callee_edges;
 355 extern struct gimple_opt_pass pass_build_cgraph_edges;
 356 extern struct gimple_opt_pass pass_local_pure_const;
 357 extern struct gimple_opt_pass pass_tracer;
 358 extern struct gimple_opt_pass pass_warn_unused_result;
 359 extern struct gimple_opt_pass pass_diagnose_tm_blocks;
 360 extern struct gimple_opt_pass pass_lower_tm;
 361 extern struct gimple_opt_pass pass_tm_init;
 362 extern struct gimple_opt_pass pass_tm_mark;
 363 extern struct gimple_opt_pass pass_tm_memopt;
 364 extern struct gimple_opt_pass pass_tm_edges;
 365 extern struct gimple_opt_pass pass_split_functions;
 366 extern struct gimple_opt_pass pass_feedback_split_functions;
 367 extern struct gimple_opt_pass pass_strength_reduction;
 368
 369 /* IPA Passes */
 370 extern struct simple_ipa_opt_pass pass_ipa_lower_emutls;
 371 extern struct simple_ipa_opt_pass pass_ipa_function_and_variable_visibility;
 372 extern struct simple_ipa_opt_pass pass_ipa_tree_profile;
 373
 374 extern struct simple_ipa_opt_pass pass_early_local_passes;
 375
 376 extern struct ipa_opt_pass_d pass_ipa_whole_program_visibility;
 377 extern struct ipa_opt_pass_d pass_ipa_lto_gimple_out;
 378 extern struct simple_ipa_opt_pass pass_ipa_increase_alignment;
 379 extern struct ipa_opt_pass_d pass_ipa_inline;
 380 extern struct simple_ipa_opt_pass pass_ipa_free_lang_data;
 381 extern struct simple_ipa_opt_pass pass_ipa_free_inline_summary;
 382 extern struct ipa_opt_pass_d pass_ipa_cp;
 383 extern struct ipa_opt_pass_d pass_ipa_reference;
 384 extern struct ipa_opt_pass_d pass_ipa_pure_const;
 385 extern struct simple_ipa_opt_pass pass_ipa_pta;
 386 extern struct ipa_opt_pass_d pass_ipa_lto_wpa_fixup;
 387 extern struct ipa_opt_pass_d pass_ipa_lto_finish_out;
 388 extern struct simple_ipa_opt_pass pass_ipa_tm;
 389 extern struct ipa_opt_pass_d pass_ipa_profile;
 390 extern struct ipa_opt_pass_d pass_ipa_cdtor_merge;
 391
 392 extern struct gimple_opt_pass pass_cleanup_cfg_post_optimizing;
 393 extern struct gimple_opt_pass pass_init_datastructures;
 394 extern struct gimple_opt_pass pass_fixup_cfg;
 395
 396 extern struct rtl_opt_pass pass_expand;
 397 extern struct rtl_opt_pass pass_instantiate_virtual_regs;
 398 extern struct rtl_opt_pass pass_rtl_fwprop;
 399 extern struct rtl_opt_pass pass_rtl_fwprop_addr;
 400 extern struct rtl_opt_pass pass_jump;
 401 extern struct rtl_opt_pass pass_jump2;
 402 extern struct rtl_opt_pass pass_lower_subreg;
 403 extern struct rtl_opt_pass pass_cse;
 404 extern struct rtl_opt_pass pass_fast_rtl_dce;
 405 extern struct rtl_opt_pass pass_ud_rtl_dce;
 406 extern struct rtl_opt_pass pass_rtl_dce;
 407 extern struct rtl_opt_pass pass_rtl_dse1;
 408 extern struct rtl_opt_pass pass_rtl_dse2;
 409 extern struct rtl_opt_pass pass_rtl_dse3;
 410 extern struct rtl_opt_pass pass_rtl_cprop;
 411 extern struct rtl_opt_pass pass_rtl_pre;
 412 extern struct rtl_opt_pass pass_rtl_hoist;
 413 extern struct rtl_opt_pass pass_rtl_store_motion;
 414 extern struct rtl_opt_pass pass_cse_after_global_opts;
 415 extern struct rtl_opt_pass pass_rtl_ifcvt;
 416
 417 extern struct rtl_opt_pass pass_into_cfg_layout_mode;
 418 extern struct rtl_opt_pass pass_outof_cfg_layout_mode;
 419
 420 extern struct rtl_opt_pass pass_loop2;
 421 extern struct rtl_opt_pass pass_rtl_loop_init;
 422 extern struct rtl_opt_pass pass_rtl_move_loop_invariants;
 423 extern struct rtl_opt_pass pass_rtl_unswitch;
 424 extern struct rtl_opt_pass pass_rtl_unroll_and_peel_loops;
 425 extern struct rtl_opt_pass pass_rtl_doloop;
 426 extern struct rtl_opt_pass pass_rtl_loop_done;
 427
 428 extern struct rtl_opt_pass pass_web;
 429 extern struct rtl_opt_pass pass_cse2;
 430 extern struct rtl_opt_pass pass_df_initialize_opt;
 431 extern struct rtl_opt_pass pass_df_initialize_no_opt;
 432 extern struct rtl_opt_pass pass_reginfo_init;
 433 extern struct rtl_opt_pass pass_inc_dec;
 434 extern struct rtl_opt_pass pass_stack_ptr_mod;
 435 extern struct rtl_opt_pass pass_initialize_regs;
 436 extern struct rtl_opt_pass pass_combine;
 437 extern struct rtl_opt_pass pass_if_after_combine;
 438 extern struct rtl_opt_pass pass_ree;
 439 extern struct rtl_opt_pass pass_partition_blocks;
 440 extern struct rtl_opt_pass pass_match_asm_constraints;
 441 extern struct rtl_opt_pass pass_regmove;
 442 extern struct rtl_opt_pass pass_split_all_insns;
 443 extern struct rtl_opt_pass pass_fast_rtl_byte_dce;
 444 extern struct rtl_opt_pass pass_lower_subreg2;
 445 extern struct rtl_opt_pass pass_mode_switching;
 446 extern struct rtl_opt_pass pass_sms;
 447 extern struct rtl_opt_pass pass_sched;
 448 extern struct rtl_opt_pass pass_ira;
 449 extern struct rtl_opt_pass pass_reload;
 450 extern struct rtl_opt_pass pass_clean_state;
 451 extern struct rtl_opt_pass pass_branch_prob;
 452 extern struct rtl_opt_pass pass_value_profile_transformations;
 453 extern struct rtl_opt_pass pass_postreload_cse;
 454 extern struct rtl_opt_pass pass_gcse2;
 455 extern struct rtl_opt_pass pass_split_after_reload;
 456 extern struct rtl_opt_pass pass_branch_target_load_optimize1;
 457 extern struct rtl_opt_pass pass_thread_prologue_and_epilogue;
 458 extern struct rtl_opt_pass pass_stack_adjustments;
 459 extern struct rtl_opt_pass pass_peephole2;
 460 extern struct rtl_opt_pass pass_if_after_reload;
 461 extern struct rtl_opt_pass pass_regrename;
 462 extern struct rtl_opt_pass pass_cprop_hardreg;
 463 extern struct rtl_opt_pass pass_reorder_blocks;
 464 extern struct rtl_opt_pass pass_branch_target_load_optimize2;
 465 extern struct rtl_opt_pass pass_leaf_regs;
 466 extern struct rtl_opt_pass pass_split_before_sched2;
 467 extern struct rtl_opt_pass pass_compare_elim_after_reload;
 468 extern struct rtl_opt_pass pass_sched2;
 469 extern struct rtl_opt_pass pass_stack_regs;
 470 extern struct rtl_opt_pass pass_stack_regs_run;
 471 extern struct rtl_opt_pass pass_df_finish;
 472 extern struct rtl_opt_pass pass_compute_alignments;
 473 extern struct rtl_opt_pass pass_duplicate_computed_gotos;
 474 extern struct rtl_opt_pass pass_variable_tracking;
 475 extern struct rtl_opt_pass pass_free_cfg;
 476 extern struct rtl_opt_pass pass_machine_reorg;
 477 extern struct rtl_opt_pass pass_cleanup_barriers;
 478 extern struct rtl_opt_pass pass_delay_slots;
 479 extern struct rtl_opt_pass pass_split_for_shorten_branches;
 480 extern struct rtl_opt_pass pass_split_before_regstack;
 481 extern struct rtl_opt_pass pass_convert_to_eh_region_ranges;
 482 extern struct rtl_opt_pass pass_shorten_branches;
 483 extern struct rtl_opt_pass pass_set_nothrow_function_flags;
 484 extern struct rtl_opt_pass pass_dwarf2_frame;
 485 extern struct rtl_opt_pass pass_final;
 486 extern struct rtl_opt_pass pass_rtl_seqabstr;
 487 extern struct gimple_opt_pass pass_release_ssa_names;
 488 extern struct gimple_opt_pass pass_early_inline;
 489 extern struct gimple_opt_pass pass_inline_parameters;
 490 extern struct gimple_opt_pass pass_update_address_taken;
 491 extern struct gimple_opt_pass pass_convert_switch;
 492
 493 /* The root of the compilation pass tree, once constructed.  */
 494 extern struct opt_pass *all_passes, *all_small_ipa_passes, *all_lowering_passes,
 495                        *all_regular_ipa_passes, *all_lto_gen_passes, *all_late_ipa_passes;
 496
 497 /* Define a list of pass lists so that both passes.c and plugins can easily
 498    find all the pass lists.  */
 499 #define GCC_PASS_LISTS \
 500   DEF_PASS_LIST (all_lowering_passes) \
 501   DEF_PASS_LIST (all_small_ipa_passes) \
 502   DEF_PASS_LIST (all_regular_ipa_passes) \
 503   DEF_PASS_LIST (all_lto_gen_passes) \
 504   DEF_PASS_LIST (all_passes)
 505
 506 #define DEF_PASS_LIST(LIST) PASS_LIST_NO_##LIST,
 507 enum
 508 {
 509   GCC_PASS_LISTS
 510   PASS_LIST_NUM
 511 };
 512 #undef DEF_PASS_LIST
 513
 514 /* This is used by plugins, and should also be used in
 515    passes.c:register_pass.  */
 516 extern struct opt_pass **gcc_pass_lists[];
 517
 518 /* Current optimization pass.  */
 519 extern struct opt_pass *current_pass;
 520
 521 extern struct opt_pass * get_pass_for_id (int);
 522 extern bool execute_one_pass (struct opt_pass *);
 523 extern void execute_pass_list (struct opt_pass *);
 524 extern void execute_ipa_pass_list (struct opt_pass *);
 525 extern void execute_ipa_summary_passes (struct ipa_opt_pass_d *);
 526 extern void execute_all_ipa_transforms (void);
 527 extern void execute_all_ipa_stmt_fixups (struct cgraph_node *, gimple *);
 528 extern bool pass_init_dump_file (struct opt_pass *);
 529 extern void pass_fini_dump_file (struct opt_pass *);
 530
 531 extern const char *get_current_pass_name (void);
 532 extern void print_current_pass (FILE *);
 533 extern void debug_pass (void);
 534 extern void ipa_write_summaries (void);
 535 extern void ipa_write_optimization_summaries (struct lto_symtab_encoder_d *);
 536 extern void ipa_read_summaries (void);
 537 extern void ipa_read_optimization_summaries (void);
 538 extern void register_one_dump_file (struct opt_pass *);
 539 extern bool function_called_by_processed_nodes_p (void);
 540 extern void register_pass (struct register_pass_info *);
 541
 542 /* Set to true if the pass is called the first time during compilation of the
 543    current function.  Note that using this information in the optimization
 544    passes is considered not to be clean, and it should be avoided if possible.
 545    This flag is currently used to prevent loops from being peeled repeatedly
 546    in jump threading; it will be removed once we preserve loop structures
 547    throughout the compilation -- we will be able to mark the affected loops
 548    directly in jump threading, and avoid peeling them next time.  */
 549 extern bool first_pass_instance;
 550
 551 extern struct opt_pass **passes_by_id;
 552 extern int passes_by_id_size;
 553
 554 /* Declare for plugins.  */
 555 extern void do_per_function_toporder (void (*) (void *), void *);
 556
 557 extern void disable_pass (const char *);
 558 extern void enable_pass (const char *);
 559 extern void dump_passes (void);
 560
 561 #endif /* GCC_TREE_PASS_H */