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