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 #define TDF_ASMNAME     (1 << 18)       /* display asm names of decls  */
  79 #define TDF_EH          (1 << 19)       /* display EH region number
  80                                            holding this gimple statement.  */
  81
  82
  83 /* In tree-dump.c */
  84
  85 extern char *get_dump_file_name (int);
  86 extern int dump_enabled_p (int);
  87 extern int dump_initialized_p (int);
  88 extern FILE *dump_begin (int, int *);
  89 extern void dump_end (int, FILE *);
  90 extern void dump_node (const_tree, int, FILE *);
  91 extern int dump_switch_p (const char *);
  92 extern const char *dump_flag_name (int);
  93
  94 /* Global variables used to communicate with passes.  */
  95 extern FILE *dump_file;
  96 extern int dump_flags;
  97 extern const char *dump_file_name;
  98
  99 /* Return the dump_file_info for the given phase.  */
 100 extern struct dump_file_info *get_dump_file_info (int);
 101
 102 /* Optimization pass type.  */
 103 enum opt_pass_type
 104 {
 105   GIMPLE_PASS,
 106   RTL_PASS,
 107   SIMPLE_IPA_PASS,
 108   IPA_PASS
 109 };
 110
 111 /* Describe one pass; this is the common part shared across different pass
 112    types.  */
 113 struct opt_pass
 114 {
 115   /* Optimization pass type.  */
 116   enum opt_pass_type type;
 117
 118   /* Terse name of the pass used as a fragment of the dump file
 119      name.  If the name starts with a star, no dump happens. */
 120   const char *name;
 121
 122   /* If non-null, this pass and all sub-passes are executed only if
 123      the function returns true.  */
 124   bool (*gate) (void);
 125
 126   /* This is the code to run.  If null, then there should be sub-passes
 127      otherwise this pass does nothing.  The return value contains
 128      TODOs to execute in addition to those in TODO_flags_finish.   */
 129   unsigned int (*execute) (void);
 130
 131   /* A list of sub-passes to run, dependent on gate predicate.  */
 132   struct opt_pass *sub;
 133
 134   /* Next in the list of passes to run, independent of gate predicate.  */
 135   struct opt_pass *next;
 136
 137   /* Static pass number, used as a fragment of the dump file name.  */
 138   int static_pass_number;
 139
 140   /* The timevar id associated with this pass.  */
 141   /* ??? Ideally would be dynamically assigned.  */
 142   timevar_id_t tv_id;
 143
 144   /* Sets of properties input and output from this pass.  */
 145   unsigned int properties_required;
 146   unsigned int properties_provided;
 147   unsigned int properties_destroyed;
 148
 149   /* Flags indicating common sets things to do before and after.  */
 150   unsigned int todo_flags_start;
 151   unsigned int todo_flags_finish;
 152 };
 153
 154 /* Description of GIMPLE pass.  */
 155 struct gimple_opt_pass
 156 {
 157   struct opt_pass pass;
 158 };
 159
 160 /* Description of RTL pass.  */
 161 struct rtl_opt_pass
 162 {
 163   struct opt_pass pass;
 164 };
 165
 166 struct varpool_node;
 167 struct cgraph_node;
 168 struct cgraph_node_set_def;
 169
 170 /* Description of IPA pass with generate summary, write, execute, read and
 171    transform stages.  */
 172 struct ipa_opt_pass_d
 173 {
 174   struct opt_pass pass;
 175
 176   /* IPA passes can analyze function body and variable initializers
 177       using this hook and produce summary.  */
 178   void (*generate_summary) (void);
 179
 180   /* This hook is used to serialize IPA summaries on disk.  */
 181   void (*write_summary) (struct cgraph_node_set_def *);
 182
 183   /* For most ipa passes, the information can only be deserialized in
 184      one chunk.  However, function bodies are read function at a time
 185      as needed so both calls are necessary.  */
 186   void (*read_summary) (void);
 187   void (*function_read_summary) (struct cgraph_node *);
 188
 189   /* Results of interprocedural propagation of an IPA pass is applied to
 190      function body via this hook.  */
 191   unsigned int function_transform_todo_flags_start;
 192   unsigned int (*function_transform) (struct cgraph_node *);
 193   void (*variable_transform) (struct varpool_node *);
 194 };
 195
 196 /* Description of simple IPA pass.  Simple IPA passes have just one execute
 197    hook.  */
 198 struct simple_ipa_opt_pass
 199 {
 200   struct opt_pass pass;
 201 };
 202
 203 /* Define a tree dump switch.  */
 204 struct dump_file_info
 205 {
 206   const char *suffix;           /* suffix to give output file.  */
 207   const char *swtch;            /* command line switch */
 208   const char *glob;             /* command line glob  */
 209   int flags;                    /* user flags */
 210   int state;                    /* state of play */
 211   int num;                      /* dump file number */
 212 };
 213
 214 /* Pass properties.  */
 215 #define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
 216 #define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
 217 #define PROP_gimple_leh         (1 << 2)        /* lowered eh */
 218 #define PROP_cfg                (1 << 3)
 219 #define PROP_referenced_vars    (1 << 4)
 220 #define PROP_ssa                (1 << 5)
 221 #define PROP_no_crit_edges      (1 << 6)
 222 #define PROP_rtl                (1 << 7)
 223 #define PROP_gimple_lomp        (1 << 8)        /* lowered OpenMP directives */
 224 #define PROP_cfglayout          (1 << 9)        /* cfglayout mode on RTL */
 225
 226 #define PROP_trees \
 227   (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp)
 228
 229 /* To-do flags.  */
 230 #define TODO_dump_func                  (1 << 0)
 231 #define TODO_ggc_collect                (1 << 1)
 232 #define TODO_verify_ssa                 (1 << 2)
 233 #define TODO_verify_flow                (1 << 3)
 234 #define TODO_verify_stmts               (1 << 4)
 235 #define TODO_cleanup_cfg                (1 << 5)
 236 #define TODO_verify_loops               (1 << 6)
 237 #define TODO_dump_cgraph                (1 << 7)
 238 #define TODO_remove_functions           (1 << 8)
 239 #define TODO_rebuild_frequencies        (1 << 9)
 240 #define TODO_verify_rtl_sharing         (1 << 10)
 241
 242 /* To-do flags for calls to update_ssa.  */
 243
 244 /* Update the SSA form inserting PHI nodes for newly exposed symbols
 245    and virtual names marked for updating.  When updating real names,
 246    only insert PHI nodes for a real name O_j in blocks reached by all
 247    the new and old definitions for O_j.  If the iterated dominance
 248    frontier for O_j is not pruned, we may end up inserting PHI nodes
 249    in blocks that have one or more edges with no incoming definition
 250    for O_j.  This would lead to uninitialized warnings for O_j's
 251    symbol.  */
 252 #define TODO_update_ssa                 (1 << 11)
 253
 254 /* Update the SSA form without inserting any new PHI nodes at all.
 255    This is used by passes that have either inserted all the PHI nodes
 256    themselves or passes that need only to patch use-def and def-def
 257    chains for virtuals (e.g., DCE).  */
 258 #define TODO_update_ssa_no_phi          (1 << 12)
 259
 260 /* Insert PHI nodes everywhere they are needed.  No pruning of the
 261    IDF is done.  This is used by passes that need the PHI nodes for
 262    O_j even if it means that some arguments will come from the default
 263    definition of O_j's symbol (e.g., pass_linear_transform).
 264
 265    WARNING: If you need to use this flag, chances are that your pass
 266    may be doing something wrong.  Inserting PHI nodes for an old name
 267    where not all edges carry a new replacement may lead to silent
 268    codegen errors or spurious uninitialized warnings.  */
 269 #define TODO_update_ssa_full_phi        (1 << 13)
 270
 271 /* Passes that update the SSA form on their own may want to delegate
 272    the updating of virtual names to the generic updater.  Since FUD
 273    chains are easier to maintain, this simplifies the work they need
 274    to do.  NOTE: If this flag is used, any OLD->NEW mappings for real
 275    names are explicitly destroyed and only the symbols marked for
 276    renaming are processed.  */
 277 #define TODO_update_ssa_only_virtuals   (1 << 14)
 278
 279 /* Some passes leave unused local variables that can be removed from
 280    cfun->local_decls.  This reduces the size of dump files
 281    and the memory footprint for VAR_DECLs.  */
 282 #define TODO_remove_unused_locals       (1 << 15)
 283
 284 /* Call df_finish at the end of the pass.  This is done after all of
 285    the dumpers have been allowed to run so that they have access to
 286    the instance before it is destroyed.  */
 287 #define TODO_df_finish                  (1 << 17)
 288
 289 /* Call df_verify at the end of the pass if checking is enabled.  */
 290 #define TODO_df_verify                  (1 << 18)
 291
 292 /* Internally used for the first instance of a pass.  */
 293 #define TODO_mark_first_instance        (1 << 19)
 294
 295 /* Rebuild aliasing info.  */
 296 #define TODO_rebuild_alias              (1 << 20)
 297
 298 /* Rebuild the addressable-vars bitmap and do register promotion.  */
 299 #define TODO_update_address_taken       (1 << 21)
 300
 301 /* Internally used in execute_function_todo().  */
 302 #define TODO_update_ssa_any             \
 303     (TODO_update_ssa                    \
 304      | TODO_update_ssa_no_phi           \
 305      | TODO_update_ssa_full_phi         \
 306      | TODO_update_ssa_only_virtuals)
 307
 308 #define TODO_verify_all \
 309   (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts)
 310
 311
 312 /* Register pass info. */
 313
 314 enum pass_positioning_ops
 315 {
 316   PASS_POS_INSERT_AFTER,  /* Insert after the reference pass.  */
 317   PASS_POS_INSERT_BEFORE, /* Insert before the reference pass.  */
 318   PASS_POS_REPLACE        /* Replace the reference pass.  */
 319 };
 320
 321 struct register_pass_info
 322 {
 323   struct opt_pass *pass;            /* New pass to register.  */
 324   const char *reference_pass_name;  /* Name of the reference pass for hooking
 325                                        up the new pass.  */
 326   int ref_pass_instance_number;     /* Insert the pass at the specified
 327                                        instance number of the reference pass.
 328                                        Do it for every instance if it is 0.  */
 329   enum pass_positioning_ops pos_op; /* how to insert the new pass.  */
 330 };
 331
 332 extern void tree_lowering_passes (tree decl);
 333
 334 extern struct gimple_opt_pass pass_mudflap_1;
 335 extern struct gimple_opt_pass pass_mudflap_2;
 336 extern struct gimple_opt_pass pass_lower_cf;
 337 extern struct gimple_opt_pass pass_refactor_eh;
 338 extern struct gimple_opt_pass pass_lower_eh;
 339 extern struct gimple_opt_pass pass_lower_eh_dispatch;
 340 extern struct gimple_opt_pass pass_lower_resx;
 341 extern struct gimple_opt_pass pass_build_cfg;
 342 extern struct gimple_opt_pass pass_tree_profile;
 343 extern struct gimple_opt_pass pass_early_tree_profile;
 344 extern struct gimple_opt_pass pass_cleanup_cfg;
 345 extern struct gimple_opt_pass pass_referenced_vars;
 346 extern struct gimple_opt_pass pass_cleanup_eh;
 347 extern struct gimple_opt_pass pass_fixup_cfg;
 348 extern struct gimple_opt_pass pass_sra;
 349 extern struct gimple_opt_pass pass_sra_early;
 350 extern struct gimple_opt_pass pass_early_ipa_sra;
 351 extern struct gimple_opt_pass pass_tail_recursion;
 352 extern struct gimple_opt_pass pass_tail_calls;
 353 extern struct gimple_opt_pass pass_tree_loop;
 354 extern struct gimple_opt_pass pass_tree_loop_init;
 355 extern struct gimple_opt_pass pass_lim;
 356 extern struct gimple_opt_pass pass_tree_unswitch;
 357 extern struct gimple_opt_pass pass_predcom;
 358 extern struct gimple_opt_pass pass_iv_canon;
 359 extern struct gimple_opt_pass pass_scev_cprop;
 360 extern struct gimple_opt_pass pass_empty_loop;
 361 extern struct gimple_opt_pass pass_record_bounds;
 362 extern struct gimple_opt_pass pass_graphite_transforms;
 363 extern struct gimple_opt_pass pass_if_conversion;
 364 extern struct gimple_opt_pass pass_loop_distribution;
 365 extern struct gimple_opt_pass pass_vectorize;
 366 extern struct gimple_opt_pass pass_slp_vectorize;
 367 extern struct gimple_opt_pass pass_complete_unroll;
 368 extern struct gimple_opt_pass pass_complete_unrolli;
 369 extern struct gimple_opt_pass pass_parallelize_loops;
 370 extern struct gimple_opt_pass pass_loop_prefetch;
 371 extern struct gimple_opt_pass pass_iv_optimize;
 372 extern struct gimple_opt_pass pass_tree_loop_done;
 373 extern struct gimple_opt_pass pass_ch;
 374 extern struct gimple_opt_pass pass_ccp;
 375 extern struct gimple_opt_pass pass_phi_only_cprop;
 376 extern struct gimple_opt_pass pass_build_ssa;
 377 extern struct gimple_opt_pass pass_build_alias;
 378 extern struct gimple_opt_pass pass_build_ealias;
 379 extern struct gimple_opt_pass pass_dominator;
 380 extern struct gimple_opt_pass pass_dce;
 381 extern struct gimple_opt_pass pass_dce_loop;
 382 extern struct gimple_opt_pass pass_cd_dce;
 383 extern struct gimple_opt_pass pass_call_cdce;
 384 extern struct gimple_opt_pass pass_merge_phi;
 385 extern struct gimple_opt_pass pass_split_crit_edges;
 386 extern struct gimple_opt_pass pass_pre;
 387 extern struct gimple_opt_pass pass_profile;
 388 extern struct gimple_opt_pass pass_strip_predict_hints;
 389 extern struct gimple_opt_pass pass_lower_complex_O0;
 390 extern struct gimple_opt_pass pass_lower_complex;
 391 extern struct gimple_opt_pass pass_lower_vector;
 392 extern struct gimple_opt_pass pass_lower_vector_ssa;
 393 extern struct gimple_opt_pass pass_lower_omp;
 394 extern struct gimple_opt_pass pass_diagnose_omp_blocks;
 395 extern struct gimple_opt_pass pass_expand_omp;
 396 extern struct gimple_opt_pass pass_expand_omp_ssa;
 397 extern struct gimple_opt_pass pass_object_sizes;
 398 extern struct gimple_opt_pass pass_fold_builtins;
 399 extern struct gimple_opt_pass pass_stdarg;
 400 extern struct gimple_opt_pass pass_early_warn_uninitialized;
 401 extern struct gimple_opt_pass pass_late_warn_uninitialized;
 402 extern struct gimple_opt_pass pass_cse_reciprocals;
 403 extern struct gimple_opt_pass pass_cse_sincos;
 404 extern struct gimple_opt_pass pass_optimize_bswap;
 405 extern struct gimple_opt_pass pass_warn_function_return;
 406 extern struct gimple_opt_pass pass_warn_function_noreturn;
 407 extern struct gimple_opt_pass pass_cselim;
 408 extern struct gimple_opt_pass pass_phiopt;
 409 extern struct gimple_opt_pass pass_forwprop;
 410 extern struct gimple_opt_pass pass_phiprop;
 411 extern struct gimple_opt_pass pass_tree_ifcombine;
 412 extern struct gimple_opt_pass pass_dse;
 413 extern struct gimple_opt_pass pass_nrv;
 414 extern struct gimple_opt_pass pass_rename_ssa_copies;
 415 extern struct gimple_opt_pass pass_rest_of_compilation;
 416 extern struct gimple_opt_pass pass_sink_code;
 417 extern struct gimple_opt_pass pass_fre;
 418 extern struct gimple_opt_pass pass_linear_transform;
 419 extern struct gimple_opt_pass pass_check_data_deps;
 420 extern struct gimple_opt_pass pass_copy_prop;
 421 extern struct gimple_opt_pass pass_vrp;
 422 extern struct gimple_opt_pass pass_uncprop;
 423 extern struct gimple_opt_pass pass_return_slot;
 424 extern struct gimple_opt_pass pass_reassoc;
 425 extern struct gimple_opt_pass pass_rebuild_cgraph_edges;
 426 extern struct gimple_opt_pass pass_remove_cgraph_callee_edges;
 427 extern struct gimple_opt_pass pass_build_cgraph_edges;
 428 extern struct gimple_opt_pass pass_local_pure_const;
 429 extern struct gimple_opt_pass pass_tracer;
 430 extern struct gimple_opt_pass pass_warn_unused_result;
 431
 432 /* IPA Passes */
 433 extern struct simple_ipa_opt_pass pass_ipa_function_and_variable_visibility;
 434 extern struct simple_ipa_opt_pass pass_ipa_early_inline;
 435
 436 extern struct simple_ipa_opt_pass pass_early_local_passes;
 437
 438 extern struct ipa_opt_pass_d pass_ipa_whole_program_visibility;
 439 extern struct ipa_opt_pass_d pass_ipa_lto_gimple_out;
 440 extern struct simple_ipa_opt_pass pass_ipa_increase_alignment;
 441 extern struct simple_ipa_opt_pass pass_ipa_matrix_reorg;
 442 extern struct ipa_opt_pass_d pass_ipa_inline;
 443 extern struct simple_ipa_opt_pass pass_ipa_free_lang_data;
 444 extern struct ipa_opt_pass_d pass_ipa_cp;
 445 extern struct ipa_opt_pass_d pass_ipa_reference;
 446 extern struct ipa_opt_pass_d pass_ipa_pure_const;
 447 extern struct simple_ipa_opt_pass pass_ipa_type_escape;
 448 extern struct simple_ipa_opt_pass pass_ipa_pta;
 449 extern struct simple_ipa_opt_pass pass_ipa_struct_reorg;
 450 extern struct ipa_opt_pass_d pass_ipa_lto_wpa_fixup;
 451 extern struct ipa_opt_pass_d pass_ipa_lto_finish_out;
 452
 453 extern struct gimple_opt_pass pass_all_optimizations;
 454 extern struct gimple_opt_pass pass_cleanup_cfg_post_optimizing;
 455 extern struct gimple_opt_pass pass_init_datastructures;
 456 extern struct gimple_opt_pass pass_fixup_cfg;
 457
 458 extern struct rtl_opt_pass pass_expand;
 459 extern struct rtl_opt_pass pass_init_function;
 460 extern struct rtl_opt_pass pass_jump;
 461 extern struct rtl_opt_pass pass_rtl_eh;
 462 extern struct rtl_opt_pass pass_initial_value_sets;
 463 extern struct rtl_opt_pass pass_unshare_all_rtl;
 464 extern struct rtl_opt_pass pass_instantiate_virtual_regs;
 465 extern struct rtl_opt_pass pass_rtl_fwprop;
 466 extern struct rtl_opt_pass pass_rtl_fwprop_addr;
 467 extern struct rtl_opt_pass pass_jump2;
 468 extern struct rtl_opt_pass pass_lower_subreg;
 469 extern struct rtl_opt_pass pass_cse;
 470 extern struct rtl_opt_pass pass_fast_rtl_dce;
 471 extern struct rtl_opt_pass pass_ud_rtl_dce;
 472 extern struct rtl_opt_pass pass_rtl_dce;
 473 extern struct rtl_opt_pass pass_rtl_dse1;
 474 extern struct rtl_opt_pass pass_rtl_dse2;
 475 extern struct rtl_opt_pass pass_rtl_dse3;
 476 extern struct rtl_opt_pass pass_rtl_cprop;
 477 extern struct rtl_opt_pass pass_rtl_pre;
 478 extern struct rtl_opt_pass pass_rtl_hoist;
 479 extern struct rtl_opt_pass pass_rtl_store_motion;
 480 extern struct rtl_opt_pass pass_cse_after_global_opts;
 481 extern struct rtl_opt_pass pass_rtl_ifcvt;
 482
 483 extern struct rtl_opt_pass pass_into_cfg_layout_mode;
 484 extern struct rtl_opt_pass pass_outof_cfg_layout_mode;
 485
 486 extern struct rtl_opt_pass pass_loop2;
 487 extern struct rtl_opt_pass pass_rtl_loop_init;
 488 extern struct rtl_opt_pass pass_rtl_move_loop_invariants;
 489 extern struct rtl_opt_pass pass_rtl_unswitch;
 490 extern struct rtl_opt_pass pass_rtl_unroll_and_peel_loops;
 491 extern struct rtl_opt_pass pass_rtl_doloop;
 492 extern struct rtl_opt_pass pass_rtl_loop_done;
 493
 494 extern struct rtl_opt_pass pass_web;
 495 extern struct rtl_opt_pass pass_cse2;
 496 extern struct rtl_opt_pass pass_df_initialize_opt;
 497 extern struct rtl_opt_pass pass_df_initialize_no_opt;
 498 extern struct rtl_opt_pass pass_reginfo_init;
 499 extern struct rtl_opt_pass pass_inc_dec;
 500 extern struct rtl_opt_pass pass_stack_ptr_mod;
 501 extern struct rtl_opt_pass pass_initialize_regs;
 502 extern struct rtl_opt_pass pass_combine;
 503 extern struct rtl_opt_pass pass_if_after_combine;
 504 extern struct rtl_opt_pass pass_partition_blocks;
 505 extern struct rtl_opt_pass pass_match_asm_constraints;
 506 extern struct rtl_opt_pass pass_regmove;
 507 extern struct rtl_opt_pass pass_split_all_insns;
 508 extern struct rtl_opt_pass pass_fast_rtl_byte_dce;
 509 extern struct rtl_opt_pass pass_lower_subreg2;
 510 extern struct rtl_opt_pass pass_mode_switching;
 511 extern struct rtl_opt_pass pass_sms;
 512 extern struct rtl_opt_pass pass_sched;
 513 extern struct rtl_opt_pass pass_ira;
 514 extern struct rtl_opt_pass pass_postreload;
 515 extern struct rtl_opt_pass pass_clean_state;
 516 extern struct rtl_opt_pass pass_branch_prob;
 517 extern struct rtl_opt_pass pass_value_profile_transformations;
 518 extern struct rtl_opt_pass pass_postreload_cse;
 519 extern struct rtl_opt_pass pass_gcse2;
 520 extern struct rtl_opt_pass pass_split_after_reload;
 521 extern struct rtl_opt_pass pass_branch_target_load_optimize1;
 522 extern struct rtl_opt_pass pass_thread_prologue_and_epilogue;
 523 extern struct rtl_opt_pass pass_stack_adjustments;
 524 extern struct rtl_opt_pass pass_peephole2;
 525 extern struct rtl_opt_pass pass_if_after_reload;
 526 extern struct rtl_opt_pass pass_regrename;
 527 extern struct rtl_opt_pass pass_cprop_hardreg;
 528 extern struct rtl_opt_pass pass_reorder_blocks;
 529 extern struct rtl_opt_pass pass_branch_target_load_optimize2;
 530 extern struct rtl_opt_pass pass_leaf_regs;
 531 extern struct rtl_opt_pass pass_split_before_sched2;
 532 extern struct rtl_opt_pass pass_sched2;
 533 extern struct rtl_opt_pass pass_stack_regs;
 534 extern struct rtl_opt_pass pass_stack_regs_run;
 535 extern struct rtl_opt_pass pass_df_finish;
 536 extern struct rtl_opt_pass pass_compute_alignments;
 537 extern struct rtl_opt_pass pass_duplicate_computed_gotos;
 538 extern struct rtl_opt_pass pass_variable_tracking;
 539 extern struct rtl_opt_pass pass_free_cfg;
 540 extern struct rtl_opt_pass pass_machine_reorg;
 541 extern struct rtl_opt_pass pass_cleanup_barriers;
 542 extern struct rtl_opt_pass pass_delay_slots;
 543 extern struct rtl_opt_pass pass_split_for_shorten_branches;
 544 extern struct rtl_opt_pass pass_split_before_regstack;
 545 extern struct rtl_opt_pass pass_convert_to_eh_region_ranges;
 546 extern struct rtl_opt_pass pass_shorten_branches;
 547 extern struct rtl_opt_pass pass_set_nothrow_function_flags;
 548 extern struct rtl_opt_pass pass_final;
 549 extern struct rtl_opt_pass pass_rtl_seqabstr;
 550 extern struct gimple_opt_pass pass_release_ssa_names;
 551 extern struct gimple_opt_pass pass_early_inline;
 552 extern struct gimple_opt_pass pass_inline_parameters;
 553 extern struct gimple_opt_pass pass_all_early_optimizations;
 554 extern struct gimple_opt_pass pass_update_address_taken;
 555 extern struct gimple_opt_pass pass_convert_switch;
 556
 557 /* The root of the compilation pass tree, once constructed.  */
 558 extern struct opt_pass *all_passes, *all_small_ipa_passes, *all_lowering_passes,
 559                        *all_regular_ipa_passes, *all_lto_gen_passes;
 560
 561 /* Current optimization pass.  */
 562 extern struct opt_pass *current_pass;
 563
 564 extern struct opt_pass * get_pass_for_id (int);
 565 extern bool execute_one_pass (struct opt_pass *);
 566 extern void execute_pass_list (struct opt_pass *);
 567 extern void execute_ipa_pass_list (struct opt_pass *);
 568 extern void execute_ipa_summary_passes (struct ipa_opt_pass_d *);
 569 extern void execute_all_ipa_transforms (void);
 570 extern bool pass_init_dump_file (struct opt_pass *);
 571 extern void pass_fini_dump_file (struct opt_pass *);
 572
 573 extern const char *get_current_pass_name (void);
 574 extern void print_current_pass (FILE *);
 575 extern void debug_pass (void);
 576 extern void ipa_write_summaries (void);
 577 extern void ipa_write_summaries_of_cgraph_node_set (
 578               struct cgraph_node_set_def *);
 579 extern void ipa_read_summaries (void);
 580 extern void register_one_dump_file (struct opt_pass *);
 581 extern bool function_called_by_processed_nodes_p (void);
 582 extern void register_pass (struct register_pass_info *);
 583
 584 /* Set to true if the pass is called the first time during compilation of the
 585    current function.  Note that using this information in the optimization
 586    passes is considered not to be clean, and it should be avoided if possible.
 587    This flag is currently used to prevent loops from being peeled repeatedly
 588    in jump threading; it will be removed once we preserve loop structures
 589    throughout the compilation -- we will be able to mark the affected loops
 590    directly in jump threading, and avoid peeling them next time.  */
 591 extern bool first_pass_instance;
 592
 593 /* Declare for plugins like ICI.  */
 594 extern void do_per_function_toporder (void (*) (void *), void *);
 595
 596 #endif /* GCC_TREE_PASS_H */