gcc/tree-pass.h

   1 /* Definitions for describing one tree-ssa optimization pass.
   2    Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009
   3    Free Software Foundation, Inc.
   4    Contributed by Richard Henderson <rth@redhat.com>
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22
  23 #ifndef GCC_TREE_PASS_H
  24 #define GCC_TREE_PASS_H 1
  25
  26 #include "timevar.h"
  27
  28 /* Different tree dump places.  When you add new tree dump places,
  29    extend the DUMP_FILES array in tree-dump.c.  */
  30 enum tree_dump_index
  31 {
  32   TDI_none,                     /* No dump */
  33   TDI_cgraph,                   /* dump function call graph.  */
  34   TDI_tu,                       /* dump the whole translation unit.  */
  35   TDI_class,                    /* dump class hierarchy.  */
  36   TDI_original,                 /* dump each function before optimizing it */
  37   TDI_generic,                  /* dump each function after genericizing it */
  38   TDI_nested,                   /* dump each function after unnesting it */
  39   TDI_vcg,                      /* create a VCG graph file for each
  40                                    function's flowgraph.  */
  41   TDI_tree_all,                 /* enable all the GENERIC/GIMPLE dumps.  */
  42   TDI_rtl_all,                  /* enable all the RTL dumps.  */
  43   TDI_ipa_all,                  /* enable all the IPA dumps.  */
  44
  45   TDI_end
  46 };
  47
  48 /* Bit masks to control dumping. Not all values are applicable to
  49    all dumps. Add new ones at the end. When you define new
  50    values, extend the DUMP_OPTIONS array in tree-dump.c */
  51 #define TDF_ADDRESS     (1 << 0)        /* dump node addresses */
  52 #define TDF_SLIM        (1 << 1)        /* don't go wild following links */
  53 #define TDF_RAW         (1 << 2)        /* don't unparse the function */
  54 #define TDF_DETAILS     (1 << 3)        /* show more detailed info about
  55                                            each pass */
  56 #define TDF_STATS       (1 << 4)        /* dump various statistics about
  57                                            each pass */
  58 #define TDF_BLOCKS      (1 << 5)        /* display basic block boundaries */
  59 #define TDF_VOPS        (1 << 6)        /* display virtual operands */
  60 #define TDF_LINENO      (1 << 7)        /* display statement line numbers */
  61 #define TDF_UID         (1 << 8)        /* display decl UIDs */
  62
  63 #define TDF_TREE        (1 << 9)        /* is a tree dump */
  64 #define TDF_RTL         (1 << 10)       /* is a RTL dump */
  65 #define TDF_IPA         (1 << 11)       /* is an IPA dump */
  66 #define TDF_STMTADDR    (1 << 12)       /* Address of stmt.  */
  67
  68 #define TDF_GRAPH       (1 << 13)       /* a graph dump is being emitted */
  69 #define TDF_MEMSYMS     (1 << 14)       /* display memory symbols in expr.
  70                                            Implies TDF_VOPS.  */
  71
  72 #define TDF_DIAGNOSTIC  (1 << 15)       /* A dump to be put in a diagnostic
  73                                            message.  */
  74 #define TDF_VERBOSE     (1 << 16)       /* A dump that uses the full tree
  75                                            dumper to print stmts.  */
  76 #define TDF_RHS_ONLY    (1 << 17)       /* a flag to only print the RHS of
  77                                            a gimple stmt.  */
  78 /* In tree-dump.c */
  79
  80 extern char *get_dump_file_name (enum tree_dump_index);
  81 extern int dump_enabled_p (enum tree_dump_index);
  82 extern int dump_initialized_p (enum tree_dump_index);
  83 extern FILE *dump_begin (enum tree_dump_index, int *);
  84 extern void dump_end (enum tree_dump_index, FILE *);
  85 extern void dump_node (const_tree, int, FILE *);
  86 extern int dump_switch_p (const char *);
  87 extern const char *dump_flag_name (enum tree_dump_index);
  88
  89 /* Global variables used to communicate with passes.  */
  90 extern FILE *dump_file;
  91 extern int dump_flags;
  92 extern const char *dump_file_name;
  93
  94 /* Return the dump_file_info for the given phase.  */
  95 extern struct dump_file_info *get_dump_file_info (enum tree_dump_index);
  96
  97 /* Describe one pass; this is the common part shared across different pass
  98    types.  */
  99 struct opt_pass
 100 {
 101   /* Optimization pass type.  */
 102   enum opt_pass_type {
 103     GIMPLE_PASS,
 104     RTL_PASS,
 105     SIMPLE_IPA_PASS,
 106     IPA_PASS
 107   } type;
 108   /* Terse name of the pass used as a fragment of the dump file
 109      name.  If the name starts with a star, no dump happens. */
 110   const char *name;
 111
 112   /* If non-null, this pass and all sub-passes are executed only if
 113      the function returns true.  */
 114   bool (*gate) (void);
 115
 116   /* This is the code to run.  If null, then there should be sub-passes
 117      otherwise this pass does nothing.  The return value contains
 118      TODOs to execute in addition to those in TODO_flags_finish.   */
 119   unsigned int (*execute) (void);
 120
 121   /* A list of sub-passes to run, dependent on gate predicate.  */
 122   struct opt_pass *sub;
 123
 124   /* Next in the list of passes to run, independent of gate predicate.  */
 125   struct opt_pass *next;
 126
 127   /* Static pass number, used as a fragment of the dump file name.  */
 128   int static_pass_number;
 129
 130   /* The timevar id associated with this pass.  */
 131   /* ??? Ideally would be dynamically assigned.  */
 132   timevar_id_t tv_id;
 133
 134   /* Sets of properties input and output from this pass.  */
 135   unsigned int properties_required;
 136   unsigned int properties_provided;
 137   unsigned int properties_destroyed;
 138
 139   /* Flags indicating common sets things to do before and after.  */
 140   unsigned int todo_flags_start;
 141   unsigned int todo_flags_finish;
 142 };
 143
 144 /* Description of GIMPLE pass.  */
 145 struct gimple_opt_pass
 146 {
 147   struct opt_pass pass;
 148 };
 149
 150 /* Description of RTL pass.  */
 151 struct rtl_opt_pass
 152 {
 153   struct opt_pass pass;
 154 };
 155
 156 struct varpool_node;
 157 struct cgraph_node;
 158
 159 /* Description of IPA pass with generate summary, write, execute, read and
 160    transform stages.  */
 161 struct ipa_opt_pass
 162 {
 163   struct opt_pass pass;
 164
 165   /* IPA passes can analyze function body and variable initializers
 166       using this hook and produce summary.  */
 167   void (*generate_summary) (void);
 168
 169   /* This hook is used to serialize IPA summaries on disk.  */
 170   void (*write_summary) (void);
 171
 172   /* For most ipa passes, the information can only be deserialized in
 173      one chunk.  However, function bodies are read function at a time
 174      as needed so both calls are necessary.  */
 175   void (*read_summary) (void);
 176   void (*function_read_summary) (struct cgraph_node *);
 177
 178   /* Results of interprocedural propagation of an IPA pass is applied to
 179      function body via this hook.  */
 180   unsigned int function_transform_todo_flags_start;
 181   unsigned int (*function_transform) (struct cgraph_node *);
 182   void (*variable_transform) (struct varpool_node *);
 183 };
 184
 185 /* Description of simple IPA pass.  Simple IPA passes have just one execute
 186    hook.  */
 187 struct simple_ipa_opt_pass
 188 {
 189   struct opt_pass pass;
 190 };
 191
 192 /* Define a tree dump switch.  */
 193 struct dump_file_info
 194 {
 195   const char *suffix;           /* suffix to give output file.  */
 196   const char *swtch;            /* command line switch */
 197   const char *glob;             /* command line glob  */
 198   int flags;                    /* user flags */
 199   int state;                    /* state of play */
 200   int num;                      /* dump file number */
 201 };
 202
 203 /* Pass properties.  */
 204 #define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
 205 #define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
 206 #define PROP_gimple_leh         (1 << 2)        /* lowered eh */
 207 #define PROP_cfg                (1 << 3)
 208 #define PROP_referenced_vars    (1 << 4)
 209 #define PROP_ssa                (1 << 5)
 210 #define PROP_no_crit_edges      (1 << 6)
 211 #define PROP_rtl                (1 << 7)
 212 #define PROP_alias              (1 << 8)
 213 #define PROP_gimple_lomp        (1 << 9)        /* lowered OpenMP directives */
 214 #define PROP_cfglayout          (1 << 10)       /* cfglayout mode on RTL */
 215
 216 #define PROP_trees \
 217   (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp)
 218
 219 /* To-do flags.  */
 220 #define TODO_dump_func                  (1 << 0)
 221 #define TODO_ggc_collect                (1 << 1)
 222 #define TODO_verify_ssa                 (1 << 2)
 223 #define TODO_verify_flow                (1 << 3)
 224 #define TODO_verify_stmts               (1 << 4)
 225 #define TODO_cleanup_cfg                (1 << 5)
 226 #define TODO_verify_loops               (1 << 6)
 227 #define TODO_dump_cgraph                (1 << 7)
 228 #define TODO_remove_functions           (1 << 8)
 229 #define TODO_rebuild_frequencies        (1 << 9)
 230 #define TODO_verify_rtl_sharing         (1 << 10)
 231
 232 /* To-do flags for calls to update_ssa.  */
 233
 234 /* Update the SSA form inserting PHI nodes for newly exposed symbols
 235    and virtual names marked for updating.  When updating real names,
 236    only insert PHI nodes for a real name O_j in blocks reached by all
 237    the new and old definitions for O_j.  If the iterated dominance
 238    frontier for O_j is not pruned, we may end up inserting PHI nodes
 239    in blocks that have one or more edges with no incoming definition
 240    for O_j.  This would lead to uninitialized warnings for O_j's
 241    symbol.  */
 242 #define TODO_update_ssa                 (1 << 11)
 243
 244 /* Update the SSA form without inserting any new PHI nodes at all.
 245    This is used by passes that have either inserted all the PHI nodes
 246    themselves or passes that need only to patch use-def and def-def
 247    chains for virtuals (e.g., DCE).  */
 248 #define TODO_update_ssa_no_phi          (1 << 12)
 249
 250 /* Insert PHI nodes everywhere they are needed.  No pruning of the
 251    IDF is done.  This is used by passes that need the PHI nodes for
 252    O_j even if it means that some arguments will come from the default
 253    definition of O_j's symbol (e.g., pass_linear_transform).
 254
 255    WARNING: If you need to use this flag, chances are that your pass
 256    may be doing something wrong.  Inserting PHI nodes for an old name
 257    where not all edges carry a new replacement may lead to silent
 258    codegen errors or spurious uninitialized warnings.  */
 259 #define TODO_update_ssa_full_phi        (1 << 13)
 260
 261 /* Passes that update the SSA form on their own may want to delegate
 262    the updating of virtual names to the generic updater.  Since FUD
 263    chains are easier to maintain, this simplifies the work they need
 264    to do.  NOTE: If this flag is used, any OLD->NEW mappings for real
 265    names are explicitly destroyed and only the symbols marked for
 266    renaming are processed.  */
 267 #define TODO_update_ssa_only_virtuals   (1 << 14)
 268
 269 /* Some passes leave unused local variables that can be removed from
 270    cfun->local_decls.  This reduces the size of dump files
 271    and the memory footprint for VAR_DECLs.  */
 272 #define TODO_remove_unused_locals       (1 << 15)
 273
 274 /* Internally used for the first in a sequence of passes.  It is set
 275    for the passes that are handed to register_dump_files.  */
 276 #define TODO_set_props                  (1 << 16)
 277
 278 /* Call df_finish at the end of the pass.  This is done after all of
 279    the dumpers have been allowed to run so that they have access to
 280    the instance before it is destroyed.  */
 281 #define TODO_df_finish                  (1 << 17)
 282
 283 /* Call df_verify at the end of the pass if checking is enabled.  */
 284 #define TODO_df_verify                  (1 << 18)
 285
 286 /* Internally used for the first instance of a pass.  */
 287 #define TODO_mark_first_instance        (1 << 19)
 288
 289 /* Rebuild aliasing info.  */
 290 #define TODO_rebuild_alias              (1 << 20)
 291
 292 /* Rebuild the addressable-vars bitmap and do register promotion.  */
 293 #define TODO_update_address_taken       (1 << 21)
 294
 295 #define TODO_update_ssa_any             \
 296     (TODO_update_ssa                    \
 297      | TODO_update_ssa_no_phi           \
 298      | TODO_update_ssa_full_phi         \
 299      | TODO_update_ssa_only_virtuals)
 300
 301 #define TODO_verify_all \
 302   (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts)
 303
 304 extern void tree_lowering_passes (tree decl);
 305
 306 extern struct gimple_opt_pass pass_mudflap_1;
 307 extern struct gimple_opt_pass pass_mudflap_2;
 308 extern struct gimple_opt_pass pass_remove_useless_stmts;
 309 extern struct gimple_opt_pass pass_lower_cf;
 310 extern struct gimple_opt_pass pass_refactor_eh;
 311 extern struct gimple_opt_pass pass_lower_eh;
 312 extern struct gimple_opt_pass pass_build_cfg;
 313 extern struct gimple_opt_pass pass_tree_profile;
 314 extern struct gimple_opt_pass pass_early_tree_profile;
 315 extern struct gimple_opt_pass pass_cleanup_cfg;
 316 extern struct gimple_opt_pass pass_referenced_vars;
 317 extern struct gimple_opt_pass pass_cleanup_eh;
 318 extern struct gimple_opt_pass pass_fixup_cfg;
 319 extern struct gimple_opt_pass pass_sra;
 320 extern struct gimple_opt_pass pass_sra_early;
 321 extern struct gimple_opt_pass pass_tail_recursion;
 322 extern struct gimple_opt_pass pass_tail_calls;
 323 extern struct gimple_opt_pass pass_tree_loop;
 324 extern struct gimple_opt_pass pass_tree_loop_init;
 325 extern struct gimple_opt_pass pass_lim;
 326 extern struct gimple_opt_pass pass_tree_unswitch;
 327 extern struct gimple_opt_pass pass_predcom;
 328 extern struct gimple_opt_pass pass_iv_canon;
 329 extern struct gimple_opt_pass pass_scev_cprop;
 330 extern struct gimple_opt_pass pass_empty_loop;
 331 extern struct gimple_opt_pass pass_record_bounds;
 332 extern struct gimple_opt_pass pass_graphite_transforms;
 333 extern struct gimple_opt_pass pass_if_conversion;
 334 extern struct gimple_opt_pass pass_loop_distribution;
 335 extern struct gimple_opt_pass pass_vectorize;
 336 extern struct gimple_opt_pass pass_complete_unroll;
 337 extern struct gimple_opt_pass pass_complete_unrolli;
 338 extern struct gimple_opt_pass pass_parallelize_loops;
 339 extern struct gimple_opt_pass pass_loop_prefetch;
 340 extern struct gimple_opt_pass pass_iv_optimize;
 341 extern struct gimple_opt_pass pass_tree_loop_done;
 342 extern struct gimple_opt_pass pass_ch;
 343 extern struct gimple_opt_pass pass_ccp;
 344 extern struct gimple_opt_pass pass_phi_only_cprop;
 345 extern struct gimple_opt_pass pass_build_ssa;
 346 extern struct gimple_opt_pass pass_del_ssa;
 347 extern struct gimple_opt_pass pass_build_alias;
 348 extern struct gimple_opt_pass pass_dominator;
 349 extern struct gimple_opt_pass pass_dce;
 350 extern struct gimple_opt_pass pass_dce_loop;
 351 extern struct gimple_opt_pass pass_cd_dce;
 352 extern struct gimple_opt_pass pass_call_cdce;
 353 extern struct gimple_opt_pass pass_merge_phi;
 354 extern struct gimple_opt_pass pass_split_crit_edges;
 355 extern struct gimple_opt_pass pass_pre;
 356 extern struct gimple_opt_pass pass_profile;
 357 extern struct gimple_opt_pass pass_strip_predict_hints;
 358 extern struct gimple_opt_pass pass_lower_complex_O0;
 359 extern struct gimple_opt_pass pass_lower_complex;
 360 extern struct gimple_opt_pass pass_lower_vector;
 361 extern struct gimple_opt_pass pass_lower_vector_ssa;
 362 extern struct gimple_opt_pass pass_lower_omp;
 363 extern struct gimple_opt_pass pass_expand_omp;
 364 extern struct gimple_opt_pass pass_expand_omp_ssa;
 365 extern struct gimple_opt_pass pass_object_sizes;
 366 extern struct gimple_opt_pass pass_fold_builtins;
 367 extern struct gimple_opt_pass pass_stdarg;
 368 extern struct gimple_opt_pass pass_early_warn_uninitialized;
 369 extern struct gimple_opt_pass pass_late_warn_uninitialized;
 370 extern struct gimple_opt_pass pass_cse_reciprocals;
 371 extern struct gimple_opt_pass pass_cse_sincos;
 372 extern struct gimple_opt_pass pass_convert_to_rsqrt;
 373 extern struct gimple_opt_pass pass_warn_function_return;
 374 extern struct gimple_opt_pass pass_warn_function_noreturn;
 375 extern struct gimple_opt_pass pass_cselim;
 376 extern struct gimple_opt_pass pass_phiopt;
 377 extern struct gimple_opt_pass pass_forwprop;
 378 extern struct gimple_opt_pass pass_phiprop;
 379 extern struct gimple_opt_pass pass_tree_ifcombine;
 380 extern struct gimple_opt_pass pass_dse;
 381 extern struct gimple_opt_pass pass_nrv;
 382 extern struct gimple_opt_pass pass_mark_used_blocks;
 383 extern struct gimple_opt_pass pass_rename_ssa_copies;
 384 extern struct gimple_opt_pass pass_rest_of_compilation;
 385 extern struct gimple_opt_pass pass_sink_code;
 386 extern struct gimple_opt_pass pass_fre;
 387 extern struct gimple_opt_pass pass_linear_transform;
 388 extern struct gimple_opt_pass pass_check_data_deps;
 389 extern struct gimple_opt_pass pass_copy_prop;
 390 extern struct gimple_opt_pass pass_vrp;
 391 extern struct gimple_opt_pass pass_uncprop;
 392 extern struct gimple_opt_pass pass_return_slot;
 393 extern struct gimple_opt_pass pass_reassoc;
 394 extern struct gimple_opt_pass pass_rebuild_cgraph_edges;
 395 extern struct gimple_opt_pass pass_remove_cgraph_callee_edges;
 396 extern struct gimple_opt_pass pass_build_cgraph_edges;
 397 extern struct gimple_opt_pass pass_local_pure_const;
 398
 399 /* IPA Passes */
 400 extern struct ipa_opt_pass pass_ipa_inline;
 401 extern struct ipa_opt_pass pass_ipa_cp;
 402 extern struct ipa_opt_pass pass_ipa_reference;
 403 extern struct ipa_opt_pass pass_ipa_pure_const;
 404
 405 extern struct simple_ipa_opt_pass pass_ipa_matrix_reorg;
 406 extern struct simple_ipa_opt_pass pass_ipa_early_inline;
 407 extern struct simple_ipa_opt_pass pass_ipa_type_escape;
 408 extern struct simple_ipa_opt_pass pass_ipa_pta;
 409 extern struct simple_ipa_opt_pass pass_ipa_struct_reorg;
 410 extern struct simple_ipa_opt_pass pass_early_local_passes;
 411 extern struct simple_ipa_opt_pass pass_ipa_increase_alignment;
 412 extern struct simple_ipa_opt_pass pass_ipa_function_and_variable_visibility;
 413
 414 extern struct gimple_opt_pass pass_all_optimizations;
 415 extern struct gimple_opt_pass pass_cleanup_cfg_post_optimizing;
 416 extern struct gimple_opt_pass pass_free_cfg_annotations;
 417 extern struct gimple_opt_pass pass_free_datastructures;
 418 extern struct gimple_opt_pass pass_init_datastructures;
 419 extern struct gimple_opt_pass pass_fixup_cfg;
 420
 421 extern struct rtl_opt_pass pass_expand;
 422 extern struct rtl_opt_pass pass_init_function;
 423 extern struct rtl_opt_pass pass_jump;
 424 extern struct rtl_opt_pass pass_rtl_eh;
 425 extern struct rtl_opt_pass pass_initial_value_sets;
 426 extern struct rtl_opt_pass pass_unshare_all_rtl;
 427 extern struct rtl_opt_pass pass_instantiate_virtual_regs;
 428 extern struct rtl_opt_pass pass_rtl_fwprop;
 429 extern struct rtl_opt_pass pass_rtl_fwprop_addr;
 430 extern struct rtl_opt_pass pass_jump2;
 431 extern struct rtl_opt_pass pass_lower_subreg;
 432 extern struct rtl_opt_pass pass_cse;
 433 extern struct rtl_opt_pass pass_fast_rtl_dce;
 434 extern struct rtl_opt_pass pass_ud_rtl_dce;
 435 extern struct rtl_opt_pass pass_rtl_dce;
 436 extern struct rtl_opt_pass pass_rtl_dse1;
 437 extern struct rtl_opt_pass pass_rtl_dse2;
 438 extern struct rtl_opt_pass pass_rtl_dse3;
 439 extern struct rtl_opt_pass pass_gcse;
 440 extern struct rtl_opt_pass pass_jump_bypass;
 441 extern struct rtl_opt_pass pass_profiling;
 442 extern struct rtl_opt_pass pass_rtl_ifcvt;
 443 extern struct gimple_opt_pass pass_tracer;
 444
 445 extern struct rtl_opt_pass pass_into_cfg_layout_mode;
 446 extern struct rtl_opt_pass pass_outof_cfg_layout_mode;
 447
 448 extern struct rtl_opt_pass pass_loop2;
 449 extern struct rtl_opt_pass pass_rtl_loop_init;
 450 extern struct rtl_opt_pass pass_rtl_move_loop_invariants;
 451 extern struct rtl_opt_pass pass_rtl_unswitch;
 452 extern struct rtl_opt_pass pass_rtl_unroll_and_peel_loops;
 453 extern struct rtl_opt_pass pass_rtl_doloop;
 454 extern struct rtl_opt_pass pass_rtl_loop_done;
 455
 456 extern struct rtl_opt_pass pass_web;
 457 extern struct rtl_opt_pass pass_cse2;
 458 extern struct rtl_opt_pass pass_df_initialize_opt;
 459 extern struct rtl_opt_pass pass_df_initialize_no_opt;
 460 extern struct rtl_opt_pass pass_reginfo_init;
 461 extern struct rtl_opt_pass pass_subregs_of_mode_init;
 462 extern struct rtl_opt_pass pass_subregs_of_mode_finish;
 463 extern struct rtl_opt_pass pass_inc_dec;
 464 extern struct rtl_opt_pass pass_stack_ptr_mod;
 465 extern struct rtl_opt_pass pass_initialize_regs;
 466 extern struct rtl_opt_pass pass_combine;
 467 extern struct rtl_opt_pass pass_if_after_combine;
 468 extern struct rtl_opt_pass pass_partition_blocks;
 469 extern struct rtl_opt_pass pass_match_asm_constraints;
 470 extern struct rtl_opt_pass pass_regmove;
 471 extern struct rtl_opt_pass pass_split_all_insns;
 472 extern struct rtl_opt_pass pass_fast_rtl_byte_dce;
 473 extern struct rtl_opt_pass pass_lower_subreg2;
 474 extern struct rtl_opt_pass pass_mode_switching;
 475 extern struct rtl_opt_pass pass_see;
 476 extern struct rtl_opt_pass pass_sms;
 477 extern struct rtl_opt_pass pass_sched;
 478 extern struct rtl_opt_pass pass_ira;
 479 extern struct rtl_opt_pass pass_postreload;
 480 extern struct rtl_opt_pass pass_clean_state;
 481 extern struct rtl_opt_pass pass_branch_prob;
 482 extern struct rtl_opt_pass pass_value_profile_transformations;
 483 extern struct rtl_opt_pass pass_postreload_cse;
 484 extern struct rtl_opt_pass pass_gcse2;
 485 extern struct rtl_opt_pass pass_split_after_reload;
 486 extern struct rtl_opt_pass pass_branch_target_load_optimize1;
 487 extern struct rtl_opt_pass pass_thread_prologue_and_epilogue;
 488 extern struct rtl_opt_pass pass_stack_adjustments;
 489 extern struct rtl_opt_pass pass_peephole2;
 490 extern struct rtl_opt_pass pass_if_after_reload;
 491 extern struct rtl_opt_pass pass_regrename;
 492 extern struct rtl_opt_pass pass_cprop_hardreg;
 493 extern struct rtl_opt_pass pass_reorder_blocks;
 494 extern struct rtl_opt_pass pass_branch_target_load_optimize2;
 495 extern struct rtl_opt_pass pass_leaf_regs;
 496 extern struct rtl_opt_pass pass_split_before_sched2;
 497 extern struct rtl_opt_pass pass_sched2;
 498 extern struct rtl_opt_pass pass_stack_regs;
 499 extern struct rtl_opt_pass pass_stack_regs_run;
 500 extern struct rtl_opt_pass pass_df_finish;
 501 extern struct rtl_opt_pass pass_compute_alignments;
 502 extern struct rtl_opt_pass pass_duplicate_computed_gotos;
 503 extern struct rtl_opt_pass pass_variable_tracking;
 504 extern struct rtl_opt_pass pass_free_cfg;
 505 extern struct rtl_opt_pass pass_machine_reorg;
 506 extern struct rtl_opt_pass pass_cleanup_barriers;
 507 extern struct rtl_opt_pass pass_delay_slots;
 508 extern struct rtl_opt_pass pass_split_for_shorten_branches;
 509 extern struct rtl_opt_pass pass_split_before_regstack;
 510 extern struct rtl_opt_pass pass_convert_to_eh_region_ranges;
 511 extern struct rtl_opt_pass pass_shorten_branches;
 512 extern struct rtl_opt_pass pass_set_nothrow_function_flags;
 513 extern struct rtl_opt_pass pass_final;
 514 extern struct rtl_opt_pass pass_rtl_seqabstr;
 515 extern struct gimple_opt_pass pass_release_ssa_names;
 516 extern struct gimple_opt_pass pass_early_inline;
 517 extern struct gimple_opt_pass pass_inline_parameters;
 518 extern struct gimple_opt_pass pass_all_early_optimizations;
 519 extern struct gimple_opt_pass pass_update_address_taken;
 520 extern struct gimple_opt_pass pass_convert_switch;
 521
 522 /* The root of the compilation pass tree, once constructed.  */
 523 extern struct opt_pass *all_passes, *all_ipa_passes, *all_lowering_passes;
 524
 525 /* Current optimization pass.  */
 526 extern struct opt_pass *current_pass;
 527
 528 extern struct opt_pass * get_pass_for_id (int);
 529 extern void execute_pass_list (struct opt_pass *);
 530 extern void execute_ipa_pass_list (struct opt_pass *);
 531 extern void print_current_pass (FILE *);
 532 extern void debug_pass (void);
 533 extern void register_one_dump_file (struct opt_pass *);
 534 extern bool function_called_by_processed_nodes_p (void);
 535
 536 /* Set to true if the pass is called the first time during compilation of the
 537    current function.  Note that using this information in the optimization
 538    passes is considered not to be clean, and it should be avoided if possible.
 539    This flag is currently used to prevent loops from being peeled repeatedly
 540    in jump threading; it will be removed once we preserve loop structures
 541    throughout the compilation -- we will be able to mark the affected loops
 542    directly in jump threading, and avoid peeling them next time.  */
 543 extern bool first_pass_instance;
 544
 545 #endif /* GCC_TREE_PASS_H */