gcc/tree-pass.h

   1 /* Definitions for describing one tree-ssa optimization pass.
   2    Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010
   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_ada,                      /* dump declarations in Ada syntax.  */
  42   TDI_tree_all,                 /* enable all the GENERIC/GIMPLE dumps.  */
  43   TDI_rtl_all,                  /* enable all the RTL dumps.  */
  44   TDI_ipa_all,                  /* enable all the IPA dumps.  */
  45
  46   TDI_end
  47 };
  48
  49 /* Bit masks to control dumping. Not all values are applicable to
  50    all dumps. Add new ones at the end. When you define new
  51    values, extend the DUMP_OPTIONS array in tree-dump.c */
  52 #define TDF_ADDRESS     (1 << 0)        /* dump node addresses */
  53 #define TDF_SLIM        (1 << 1)        /* don't go wild following links */
  54 #define TDF_RAW         (1 << 2)        /* don't unparse the function */
  55 #define TDF_DETAILS     (1 << 3)        /* show more detailed info about
  56                                            each pass */
  57 #define TDF_STATS       (1 << 4)        /* dump various statistics about
  58                                            each pass */
  59 #define TDF_BLOCKS      (1 << 5)        /* display basic block boundaries */
  60 #define TDF_VOPS        (1 << 6)        /* display virtual operands */
  61 #define TDF_LINENO      (1 << 7)        /* display statement line numbers */
  62 #define TDF_UID         (1 << 8)        /* display decl UIDs */
  63
  64 #define TDF_TREE        (1 << 9)        /* is a tree dump */
  65 #define TDF_RTL         (1 << 10)       /* is a RTL dump */
  66 #define TDF_IPA         (1 << 11)       /* is an IPA dump */
  67 #define TDF_STMTADDR    (1 << 12)       /* Address of stmt.  */
  68
  69 #define TDF_GRAPH       (1 << 13)       /* a graph dump is being emitted */
  70 #define TDF_MEMSYMS     (1 << 14)       /* display memory symbols in expr.
  71                                            Implies TDF_VOPS.  */
  72
  73 #define TDF_DIAGNOSTIC  (1 << 15)       /* A dump to be put in a diagnostic
  74                                            message.  */
  75 #define TDF_VERBOSE     (1 << 16)       /* A dump that uses the full tree
  76                                            dumper to print stmts.  */
  77 #define TDF_RHS_ONLY    (1 << 17)       /* a flag to only print the RHS of
  78                                            a gimple stmt.  */
  79 #define TDF_ASMNAME     (1 << 18)       /* display asm names of decls  */
  80 #define TDF_EH          (1 << 19)       /* display EH region number
  81                                            holding this gimple statement.  */
  82 #define TDF_NOUID       (1 << 20)       /* omit UIDs from dumps.  */
  83 #define TDF_ALIAS       (1 << 21)       /* display alias information  */
  84
  85
  86 /* In tree-dump.c */
  87
  88 extern char *get_dump_file_name (int);
  89 extern int dump_enabled_p (int);
  90 extern int dump_initialized_p (int);
  91 extern FILE *dump_begin (int, int *);
  92 extern void dump_end (int, FILE *);
  93 extern void dump_node (const_tree, int, FILE *);
  94 extern int dump_switch_p (const char *);
  95 extern const char *dump_flag_name (int);
  96
  97 /* Global variables used to communicate with passes.  */
  98 extern FILE *dump_file;
  99 extern int dump_flags;
 100 extern const char *dump_file_name;
 101
 102 /* Return the dump_file_info for the given phase.  */
 103 extern struct dump_file_info *get_dump_file_info (int);
 104
 105 /* Optimization pass type.  */
 106 enum opt_pass_type
 107 {
 108   GIMPLE_PASS,
 109   RTL_PASS,
 110   SIMPLE_IPA_PASS,
 111   IPA_PASS
 112 };
 113
 114 /* Describe one pass; this is the common part shared across different pass
 115    types.  */
 116 struct opt_pass
 117 {
 118   /* Optimization pass type.  */
 119   enum opt_pass_type type;
 120
 121   /* Terse name of the pass used as a fragment of the dump file
 122      name.  If the name starts with a star, no dump happens. */
 123   const char *name;
 124
 125   /* If non-null, this pass and all sub-passes are executed only if
 126      the function returns true.  */
 127   bool (*gate) (void);
 128
 129   /* This is the code to run.  If null, then there should be sub-passes
 130      otherwise this pass does nothing.  The return value contains
 131      TODOs to execute in addition to those in TODO_flags_finish.   */
 132   unsigned int (*execute) (void);
 133
 134   /* A list of sub-passes to run, dependent on gate predicate.  */
 135   struct opt_pass *sub;
 136
 137   /* Next in the list of passes to run, independent of gate predicate.  */
 138   struct opt_pass *next;
 139
 140   /* Static pass number, used as a fragment of the dump file name.  */
 141   int static_pass_number;
 142
 143   /* The timevar id associated with this pass.  */
 144   /* ??? Ideally would be dynamically assigned.  */
 145   timevar_id_t tv_id;
 146
 147   /* Sets of properties input and output from this pass.  */
 148   unsigned int properties_required;
 149   unsigned int properties_provided;
 150   unsigned int properties_destroyed;
 151
 152   /* Flags indicating common sets things to do before and after.  */
 153   unsigned int todo_flags_start;
 154   unsigned int todo_flags_finish;
 155 };
 156
 157 /* Description of GIMPLE pass.  */
 158 struct gimple_opt_pass
 159 {
 160   struct opt_pass pass;
 161 };
 162
 163 /* Description of RTL pass.  */
 164 struct rtl_opt_pass
 165 {
 166   struct opt_pass pass;
 167 };
 168
 169 struct varpool_node;
 170 struct cgraph_node;
 171 struct cgraph_node_set_def;
 172 struct varpool_node_set_def;
 173
 174 /* Description of IPA pass with generate summary, write, execute, read and
 175    transform stages.  */
 176 struct ipa_opt_pass_d
 177 {
 178   struct opt_pass pass;
 179
 180   /* IPA passes can analyze function body and variable initializers
 181       using this hook and produce summary.  */
 182   void (*generate_summary) (void);
 183
 184   /* This hook is used to serialize IPA summaries on disk.  */
 185   void (*write_summary) (struct cgraph_node_set_def *,
 186                          struct varpool_node_set_def *);
 187
 188   /* This hook is used to deserialize IPA summaries from disk.  */
 189   void (*read_summary) (void);
 190
 191   /* This hook is used to serialize IPA optimization summaries on disk.  */
 192   void (*write_optimization_summary) (struct cgraph_node_set_def *,
 193                                       struct varpool_node_set_def *);
 194
 195   /* This hook is used to deserialize IPA summaries from disk.  */
 196   void (*read_optimization_summary) (void);
 197
 198   /* Hook to convert gimple stmt uids into true gimple statements.  The second
 199      parameter is an array of statements indexed by their uid. */
 200   void (*stmt_fixup) (struct cgraph_node *, gimple *);
 201
 202   /* Results of interprocedural propagation of an IPA pass is applied to
 203      function body via this hook.  */
 204   unsigned int function_transform_todo_flags_start;
 205   unsigned int (*function_transform) (struct cgraph_node *);
 206   void (*variable_transform) (struct varpool_node *);
 207 };
 208
 209 /* Description of simple IPA pass.  Simple IPA passes have just one execute
 210    hook.  */
 211 struct simple_ipa_opt_pass
 212 {
 213   struct opt_pass pass;
 214 };
 215
 216 /* Define a tree dump switch.  */
 217 struct dump_file_info
 218 {
 219   const char *suffix;           /* suffix to give output file.  */
 220   const char *swtch;            /* command line switch */
 221   const char *glob;             /* command line glob  */
 222   int flags;                    /* user flags */
 223   int state;                    /* state of play */
 224   int num;                      /* dump file number */
 225 };
 226
 227 /* Pass properties.  */
 228 #define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
 229 #define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
 230 #define PROP_gimple_leh         (1 << 2)        /* lowered eh */
 231 #define PROP_cfg                (1 << 3)
 232 #define PROP_referenced_vars    (1 << 4)
 233 #define PROP_ssa                (1 << 5)
 234 #define PROP_no_crit_edges      (1 << 6)
 235 #define PROP_rtl                (1 << 7)
 236 #define PROP_gimple_lomp        (1 << 8)        /* lowered OpenMP directives */
 237 #define PROP_cfglayout          (1 << 9)        /* cfglayout mode on RTL */
 238 #define PROP_gimple_lcx         (1 << 10)       /* lowered complex */
 239
 240 #define PROP_trees \
 241   (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp)
 242
 243 /* To-do flags.  */
 244 #define TODO_dump_func                  (1 << 0)
 245 #define TODO_ggc_collect                (1 << 1)
 246 #define TODO_verify_ssa                 (1 << 2)
 247 #define TODO_verify_flow                (1 << 3)
 248 #define TODO_verify_stmts               (1 << 4)
 249 #define TODO_cleanup_cfg                (1 << 5)
 250 #define TODO_dump_cgraph                (1 << 7)
 251 #define TODO_remove_functions           (1 << 8)
 252 #define TODO_rebuild_frequencies        (1 << 9)
 253 #define TODO_verify_rtl_sharing         (1 << 10)
 254
 255 /* To-do flags for calls to update_ssa.  */
 256
 257 /* Update the SSA form inserting PHI nodes for newly exposed symbols
 258    and virtual names marked for updating.  When updating real names,
 259    only insert PHI nodes for a real name O_j in blocks reached by all
 260    the new and old definitions for O_j.  If the iterated dominance
 261    frontier for O_j is not pruned, we may end up inserting PHI nodes
 262    in blocks that have one or more edges with no incoming definition
 263    for O_j.  This would lead to uninitialized warnings for O_j's
 264    symbol.  */
 265 #define TODO_update_ssa                 (1 << 11)
 266
 267 /* Update the SSA form without inserting any new PHI nodes at all.
 268    This is used by passes that have either inserted all the PHI nodes
 269    themselves or passes that need only to patch use-def and def-def
 270    chains for virtuals (e.g., DCE).  */
 271 #define TODO_update_ssa_no_phi          (1 << 12)
 272
 273 /* Insert PHI nodes everywhere they are needed.  No pruning of the
 274    IDF is done.  This is used by passes that need the PHI nodes for
 275    O_j even if it means that some arguments will come from the default
 276    definition of O_j's symbol (e.g., pass_linear_transform).
 277
 278    WARNING: If you need to use this flag, chances are that your pass
 279    may be doing something wrong.  Inserting PHI nodes for an old name
 280    where not all edges carry a new replacement may lead to silent
 281    codegen errors or spurious uninitialized warnings.  */
 282 #define TODO_update_ssa_full_phi        (1 << 13)
 283
 284 /* Passes that update the SSA form on their own may want to delegate
 285    the updating of virtual names to the generic updater.  Since FUD
 286    chains are easier to maintain, this simplifies the work they need
 287    to do.  NOTE: If this flag is used, any OLD->NEW mappings for real
 288    names are explicitly destroyed and only the symbols marked for
 289    renaming are processed.  */
 290 #define TODO_update_ssa_only_virtuals   (1 << 14)
 291
 292 /* Some passes leave unused local variables that can be removed from
 293    cfun->local_decls.  This reduces the size of dump files
 294    and the memory footprint for VAR_DECLs.  */
 295 #define TODO_remove_unused_locals       (1 << 15)
 296
 297 /* Call df_finish at the end of the pass.  This is done after all of
 298    the dumpers have been allowed to run so that they have access to
 299    the instance before it is destroyed.  */
 300 #define TODO_df_finish                  (1 << 17)
 301
 302 /* Call df_verify at the end of the pass if checking is enabled.  */
 303 #define TODO_df_verify                  (1 << 18)
 304
 305 /* Internally used for the first instance of a pass.  */
 306 #define TODO_mark_first_instance        (1 << 19)
 307
 308 /* Rebuild aliasing info.  */
 309 #define TODO_rebuild_alias              (1 << 20)
 310
 311 /* Rebuild the addressable-vars bitmap and do register promotion.  */
 312 #define TODO_update_address_taken       (1 << 21)
 313
 314 /* Internally used in execute_function_todo().  */
 315 #define TODO_update_ssa_any             \
 316     (TODO_update_ssa                    \
 317      | TODO_update_ssa_no_phi           \
 318      | TODO_update_ssa_full_phi         \
 319      | TODO_update_ssa_only_virtuals)
 320
 321 #define TODO_verify_all \
 322   (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts)
 323
 324
 325 /* Register pass info. */
 326
 327 enum pass_positioning_ops
 328 {
 329   PASS_POS_INSERT_AFTER,  /* Insert after the reference pass.  */
 330   PASS_POS_INSERT_BEFORE, /* Insert before the reference pass.  */
 331   PASS_POS_REPLACE        /* Replace the reference pass.  */
 332 };
 333
 334 struct register_pass_info
 335 {
 336   struct opt_pass *pass;            /* New pass to register.  */
 337   const char *reference_pass_name;  /* Name of the reference pass for hooking
 338                                        up the new pass.  */
 339   int ref_pass_instance_number;     /* Insert the pass at the specified
 340                                        instance number of the reference pass.
 341                                        Do it for every instance if it is 0.  */
 342   enum pass_positioning_ops pos_op; /* how to insert the new pass.  */
 343 };
 344
 345 extern void tree_lowering_passes (tree decl);
 346
 347 extern struct gimple_opt_pass pass_mudflap_1;
 348 extern struct gimple_opt_pass pass_mudflap_2;
 349 extern struct gimple_opt_pass pass_lower_cf;
 350 extern struct gimple_opt_pass pass_refactor_eh;
 351 extern struct gimple_opt_pass pass_lower_eh;
 352 extern struct gimple_opt_pass pass_lower_eh_dispatch;
 353 extern struct gimple_opt_pass pass_lower_resx;
 354 extern struct gimple_opt_pass pass_build_cfg;
 355 extern struct gimple_opt_pass pass_tree_profile;
 356 extern struct gimple_opt_pass pass_early_tree_profile;
 357 extern struct gimple_opt_pass pass_cleanup_cfg;
 358 extern struct gimple_opt_pass pass_referenced_vars;
 359 extern struct gimple_opt_pass pass_cleanup_eh;
 360 extern struct gimple_opt_pass pass_fixup_cfg;
 361 extern struct gimple_opt_pass pass_sra;
 362 extern struct gimple_opt_pass pass_sra_early;
 363 extern struct gimple_opt_pass pass_early_ipa_sra;
 364 extern struct gimple_opt_pass pass_tail_recursion;
 365 extern struct gimple_opt_pass pass_tail_calls;
 366 extern struct gimple_opt_pass pass_tree_loop;
 367 extern struct gimple_opt_pass pass_tree_loop_init;
 368 extern struct gimple_opt_pass pass_lim;
 369 extern struct gimple_opt_pass pass_tree_unswitch;
 370 extern struct gimple_opt_pass pass_predcom;
 371 extern struct gimple_opt_pass pass_iv_canon;
 372 extern struct gimple_opt_pass pass_scev_cprop;
 373 extern struct gimple_opt_pass pass_empty_loop;
 374 extern struct gimple_opt_pass pass_record_bounds;
 375 extern struct gimple_opt_pass pass_graphite_transforms;
 376 extern struct gimple_opt_pass pass_if_conversion;
 377 extern struct gimple_opt_pass pass_loop_distribution;
 378 extern struct gimple_opt_pass pass_vectorize;
 379 extern struct gimple_opt_pass pass_slp_vectorize;
 380 extern struct gimple_opt_pass pass_complete_unroll;
 381 extern struct gimple_opt_pass pass_complete_unrolli;
 382 extern struct gimple_opt_pass pass_parallelize_loops;
 383 extern struct gimple_opt_pass pass_loop_prefetch;
 384 extern struct gimple_opt_pass pass_iv_optimize;
 385 extern struct gimple_opt_pass pass_tree_loop_done;
 386 extern struct gimple_opt_pass pass_ch;
 387 extern struct gimple_opt_pass pass_ccp;
 388 extern struct gimple_opt_pass pass_phi_only_cprop;
 389 extern struct gimple_opt_pass pass_build_ssa;
 390 extern struct gimple_opt_pass pass_build_alias;
 391 extern struct gimple_opt_pass pass_build_ealias;
 392 extern struct gimple_opt_pass pass_dominator;
 393 extern struct gimple_opt_pass pass_dce;
 394 extern struct gimple_opt_pass pass_dce_loop;
 395 extern struct gimple_opt_pass pass_cd_dce;
 396 extern struct gimple_opt_pass pass_call_cdce;
 397 extern struct gimple_opt_pass pass_merge_phi;
 398 extern struct gimple_opt_pass pass_split_crit_edges;
 399 extern struct gimple_opt_pass pass_pre;
 400 extern struct gimple_opt_pass pass_profile;
 401 extern struct gimple_opt_pass pass_strip_predict_hints;
 402 extern struct gimple_opt_pass pass_lower_complex_O0;
 403 extern struct gimple_opt_pass pass_lower_complex;
 404 extern struct gimple_opt_pass pass_lower_vector;
 405 extern struct gimple_opt_pass pass_lower_vector_ssa;
 406 extern struct gimple_opt_pass pass_lower_omp;
 407 extern struct gimple_opt_pass pass_diagnose_omp_blocks;
 408 extern struct gimple_opt_pass pass_expand_omp;
 409 extern struct gimple_opt_pass pass_expand_omp_ssa;
 410 extern struct gimple_opt_pass pass_object_sizes;
 411 extern struct gimple_opt_pass pass_fold_builtins;
 412 extern struct gimple_opt_pass pass_stdarg;
 413 extern struct gimple_opt_pass pass_early_warn_uninitialized;
 414 extern struct gimple_opt_pass pass_late_warn_uninitialized;
 415 extern struct gimple_opt_pass pass_cse_reciprocals;
 416 extern struct gimple_opt_pass pass_cse_sincos;
 417 extern struct gimple_opt_pass pass_optimize_bswap;
 418 extern struct gimple_opt_pass pass_optimize_widening_mul;
 419 extern struct gimple_opt_pass pass_warn_function_return;
 420 extern struct gimple_opt_pass pass_warn_function_noreturn;
 421 extern struct gimple_opt_pass pass_cselim;
 422 extern struct gimple_opt_pass pass_phiopt;
 423 extern struct gimple_opt_pass pass_forwprop;
 424 extern struct gimple_opt_pass pass_phiprop;
 425 extern struct gimple_opt_pass pass_tree_ifcombine;
 426 extern struct gimple_opt_pass pass_dse;
 427 extern struct gimple_opt_pass pass_nrv;
 428 extern struct gimple_opt_pass pass_rename_ssa_copies;
 429 extern struct gimple_opt_pass pass_rest_of_compilation;
 430 extern struct gimple_opt_pass pass_sink_code;
 431 extern struct gimple_opt_pass pass_fre;
 432 extern struct gimple_opt_pass pass_linear_transform;
 433 extern struct gimple_opt_pass pass_check_data_deps;
 434 extern struct gimple_opt_pass pass_copy_prop;
 435 extern struct gimple_opt_pass pass_vrp;
 436 extern struct gimple_opt_pass pass_uncprop;
 437 extern struct gimple_opt_pass pass_return_slot;
 438 extern struct gimple_opt_pass pass_reassoc;
 439 extern struct gimple_opt_pass pass_rebuild_cgraph_edges;
 440 extern struct gimple_opt_pass pass_remove_cgraph_callee_edges;
 441 extern struct gimple_opt_pass pass_build_cgraph_edges;
 442 extern struct gimple_opt_pass pass_local_pure_const;
 443 extern struct gimple_opt_pass pass_tracer;
 444 extern struct gimple_opt_pass pass_warn_unused_result;
 445
 446 /* IPA Passes */
 447 extern struct simple_ipa_opt_pass pass_ipa_function_and_variable_visibility;
 448 extern struct simple_ipa_opt_pass pass_ipa_early_inline;
 449
 450 extern struct simple_ipa_opt_pass pass_early_local_passes;
 451
 452 extern struct ipa_opt_pass_d pass_ipa_whole_program_visibility;
 453 extern struct ipa_opt_pass_d pass_ipa_lto_gimple_out;
 454 extern struct simple_ipa_opt_pass pass_ipa_increase_alignment;
 455 extern struct simple_ipa_opt_pass pass_ipa_matrix_reorg;
 456 extern struct ipa_opt_pass_d pass_ipa_inline;
 457 extern struct simple_ipa_opt_pass pass_ipa_free_lang_data;
 458 extern struct ipa_opt_pass_d pass_ipa_cp;
 459 extern struct ipa_opt_pass_d pass_ipa_reference;
 460 extern struct ipa_opt_pass_d pass_ipa_pure_const;
 461 extern struct simple_ipa_opt_pass pass_ipa_type_escape;
 462 extern struct simple_ipa_opt_pass pass_ipa_pta;
 463 extern struct simple_ipa_opt_pass pass_ipa_struct_reorg;
 464 extern struct ipa_opt_pass_d pass_ipa_lto_wpa_fixup;
 465 extern struct ipa_opt_pass_d pass_ipa_lto_finish_out;
 466 extern struct ipa_opt_pass_d pass_ipa_profile;
 467
 468 extern struct gimple_opt_pass pass_all_optimizations;
 469 extern struct gimple_opt_pass pass_cleanup_cfg_post_optimizing;
 470 extern struct gimple_opt_pass pass_init_datastructures;
 471 extern struct gimple_opt_pass pass_fixup_cfg;
 472
 473 extern struct rtl_opt_pass pass_expand;
 474 extern struct rtl_opt_pass pass_init_function;
 475 extern struct rtl_opt_pass pass_jump;
 476 extern struct rtl_opt_pass pass_rtl_eh;
 477 extern struct rtl_opt_pass pass_initial_value_sets;
 478 extern struct rtl_opt_pass pass_unshare_all_rtl;
 479 extern struct rtl_opt_pass pass_instantiate_virtual_regs;
 480 extern struct rtl_opt_pass pass_rtl_fwprop;
 481 extern struct rtl_opt_pass pass_rtl_fwprop_addr;
 482 extern struct rtl_opt_pass pass_jump2;
 483 extern struct rtl_opt_pass pass_lower_subreg;
 484 extern struct rtl_opt_pass pass_cse;
 485 extern struct rtl_opt_pass pass_fast_rtl_dce;
 486 extern struct rtl_opt_pass pass_ud_rtl_dce;
 487 extern struct rtl_opt_pass pass_rtl_dce;
 488 extern struct rtl_opt_pass pass_rtl_dse1;
 489 extern struct rtl_opt_pass pass_rtl_dse2;
 490 extern struct rtl_opt_pass pass_rtl_dse3;
 491 extern struct rtl_opt_pass pass_rtl_cprop;
 492 extern struct rtl_opt_pass pass_rtl_pre;
 493 extern struct rtl_opt_pass pass_rtl_hoist;
 494 extern struct rtl_opt_pass pass_rtl_store_motion;
 495 extern struct rtl_opt_pass pass_cse_after_global_opts;
 496 extern struct rtl_opt_pass pass_rtl_ifcvt;
 497
 498 extern struct rtl_opt_pass pass_into_cfg_layout_mode;
 499 extern struct rtl_opt_pass pass_outof_cfg_layout_mode;
 500
 501 extern struct rtl_opt_pass pass_loop2;
 502 extern struct rtl_opt_pass pass_rtl_loop_init;
 503 extern struct rtl_opt_pass pass_rtl_move_loop_invariants;
 504 extern struct rtl_opt_pass pass_rtl_unswitch;
 505 extern struct rtl_opt_pass pass_rtl_unroll_and_peel_loops;
 506 extern struct rtl_opt_pass pass_rtl_doloop;
 507 extern struct rtl_opt_pass pass_rtl_loop_done;
 508
 509 extern struct rtl_opt_pass pass_web;
 510 extern struct rtl_opt_pass pass_cse2;
 511 extern struct rtl_opt_pass pass_df_initialize_opt;
 512 extern struct rtl_opt_pass pass_df_initialize_no_opt;
 513 extern struct rtl_opt_pass pass_reginfo_init;
 514 extern struct rtl_opt_pass pass_inc_dec;
 515 extern struct rtl_opt_pass pass_stack_ptr_mod;
 516 extern struct rtl_opt_pass pass_initialize_regs;
 517 extern struct rtl_opt_pass pass_combine;
 518 extern struct rtl_opt_pass pass_if_after_combine;
 519 extern struct rtl_opt_pass pass_implicit_zee;
 520 extern struct rtl_opt_pass pass_partition_blocks;
 521 extern struct rtl_opt_pass pass_match_asm_constraints;
 522 extern struct rtl_opt_pass pass_regmove;
 523 extern struct rtl_opt_pass pass_split_all_insns;
 524 extern struct rtl_opt_pass pass_fast_rtl_byte_dce;
 525 extern struct rtl_opt_pass pass_lower_subreg2;
 526 extern struct rtl_opt_pass pass_mode_switching;
 527 extern struct rtl_opt_pass pass_sms;
 528 extern struct rtl_opt_pass pass_sched;
 529 extern struct rtl_opt_pass pass_ira;
 530 extern struct rtl_opt_pass pass_postreload;
 531 extern struct rtl_opt_pass pass_clean_state;
 532 extern struct rtl_opt_pass pass_branch_prob;
 533 extern struct rtl_opt_pass pass_value_profile_transformations;
 534 extern struct rtl_opt_pass pass_postreload_cse;
 535 extern struct rtl_opt_pass pass_gcse2;
 536 extern struct rtl_opt_pass pass_split_after_reload;
 537 extern struct rtl_opt_pass pass_branch_target_load_optimize1;
 538 extern struct rtl_opt_pass pass_thread_prologue_and_epilogue;
 539 extern struct rtl_opt_pass pass_stack_adjustments;
 540 extern struct rtl_opt_pass pass_peephole2;
 541 extern struct rtl_opt_pass pass_if_after_reload;
 542 extern struct rtl_opt_pass pass_regrename;
 543 extern struct rtl_opt_pass pass_cprop_hardreg;
 544 extern struct rtl_opt_pass pass_reorder_blocks;
 545 extern struct rtl_opt_pass pass_branch_target_load_optimize2;
 546 extern struct rtl_opt_pass pass_leaf_regs;
 547 extern struct rtl_opt_pass pass_split_before_sched2;
 548 extern struct rtl_opt_pass pass_sched2;
 549 extern struct rtl_opt_pass pass_stack_regs;
 550 extern struct rtl_opt_pass pass_stack_regs_run;
 551 extern struct rtl_opt_pass pass_df_finish;
 552 extern struct rtl_opt_pass pass_compute_alignments;
 553 extern struct rtl_opt_pass pass_duplicate_computed_gotos;
 554 extern struct rtl_opt_pass pass_variable_tracking;
 555 extern struct rtl_opt_pass pass_free_cfg;
 556 extern struct rtl_opt_pass pass_machine_reorg;
 557 extern struct rtl_opt_pass pass_cleanup_barriers;
 558 extern struct rtl_opt_pass pass_delay_slots;
 559 extern struct rtl_opt_pass pass_split_for_shorten_branches;
 560 extern struct rtl_opt_pass pass_split_before_regstack;
 561 extern struct rtl_opt_pass pass_convert_to_eh_region_ranges;
 562 extern struct rtl_opt_pass pass_shorten_branches;
 563 extern struct rtl_opt_pass pass_set_nothrow_function_flags;
 564 extern struct rtl_opt_pass pass_final;
 565 extern struct rtl_opt_pass pass_rtl_seqabstr;
 566 extern struct gimple_opt_pass pass_release_ssa_names;
 567 extern struct gimple_opt_pass pass_early_inline;
 568 extern struct gimple_opt_pass pass_inline_parameters;
 569 extern struct gimple_opt_pass pass_all_early_optimizations;
 570 extern struct gimple_opt_pass pass_update_address_taken;
 571 extern struct gimple_opt_pass pass_convert_switch;
 572
 573 /* The root of the compilation pass tree, once constructed.  */
 574 extern struct opt_pass *all_passes, *all_small_ipa_passes, *all_lowering_passes,
 575                        *all_regular_ipa_passes, *all_lto_gen_passes;
 576
 577 /* Define a list of pass lists so that both passes.c and plugins can easily
 578    find all the pass lists.  */
 579 #define GCC_PASS_LISTS \
 580   DEF_PASS_LIST (all_lowering_passes) \
 581   DEF_PASS_LIST (all_small_ipa_passes) \
 582   DEF_PASS_LIST (all_regular_ipa_passes) \
 583   DEF_PASS_LIST (all_lto_gen_passes) \
 584   DEF_PASS_LIST (all_passes)
 585
 586 #define DEF_PASS_LIST(LIST) PASS_LIST_NO_##LIST,
 587 enum
 588 {
 589   GCC_PASS_LISTS
 590   PASS_LIST_NUM
 591 };
 592 #undef DEF_PASS_LIST
 593
 594 /* This is used by plugins, and should also be used in
 595    passes.c:register_pass.  */
 596 extern struct opt_pass **gcc_pass_lists[];
 597
 598 /* Current optimization pass.  */
 599 extern struct opt_pass *current_pass;
 600
 601 extern struct opt_pass * get_pass_for_id (int);
 602 extern bool execute_one_pass (struct opt_pass *);
 603 extern void execute_pass_list (struct opt_pass *);
 604 extern void execute_ipa_pass_list (struct opt_pass *);
 605 extern void execute_ipa_summary_passes (struct ipa_opt_pass_d *);
 606 extern void execute_all_ipa_transforms (void);
 607 extern void execute_all_ipa_stmt_fixups (struct cgraph_node *, gimple *);
 608 extern bool pass_init_dump_file (struct opt_pass *);
 609 extern void pass_fini_dump_file (struct opt_pass *);
 610
 611 extern const char *get_current_pass_name (void);
 612 extern void print_current_pass (FILE *);
 613 extern void debug_pass (void);
 614 extern void ipa_write_summaries (void);
 615 extern void ipa_write_optimization_summaries (struct cgraph_node_set_def *,
 616                                               struct varpool_node_set_def *);
 617 extern void ipa_read_summaries (void);
 618 extern void ipa_read_optimization_summaries (void);
 619 extern void register_one_dump_file (struct opt_pass *);
 620 extern bool function_called_by_processed_nodes_p (void);
 621 extern void register_pass (struct register_pass_info *);
 622
 623 /* Set to true if the pass is called the first time during compilation of the
 624    current function.  Note that using this information in the optimization
 625    passes is considered not to be clean, and it should be avoided if possible.
 626    This flag is currently used to prevent loops from being peeled repeatedly
 627    in jump threading; it will be removed once we preserve loop structures
 628    throughout the compilation -- we will be able to mark the affected loops
 629    directly in jump threading, and avoid peeling them next time.  */
 630 extern bool first_pass_instance;
 631
 632 /* Declare for plugins.  */
 633 extern void do_per_function_toporder (void (*) (void *), void *);
 634
 635 #endif /* GCC_TREE_PASS_H */