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   /* Hook to convert gimple stmt uids into true gimple statements.  The second
 189      parameter is an array of statements indexed by their uid. */
 190   void (*stmt_fixup) (struct cgraph_node *, gimple *);
 191
 192   /* Results of interprocedural propagation of an IPA pass is applied to
 193      function body via this hook.  */
 194   unsigned int function_transform_todo_flags_start;
 195   unsigned int (*function_transform) (struct cgraph_node *);
 196   void (*variable_transform) (struct varpool_node *);
 197 };
 198
 199 /* Description of simple IPA pass.  Simple IPA passes have just one execute
 200    hook.  */
 201 struct simple_ipa_opt_pass
 202 {
 203   struct opt_pass pass;
 204 };
 205
 206 /* Define a tree dump switch.  */
 207 struct dump_file_info
 208 {
 209   const char *suffix;           /* suffix to give output file.  */
 210   const char *swtch;            /* command line switch */
 211   const char *glob;             /* command line glob  */
 212   int flags;                    /* user flags */
 213   int state;                    /* state of play */
 214   int num;                      /* dump file number */
 215 };
 216
 217 /* Pass properties.  */
 218 #define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
 219 #define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
 220 #define PROP_gimple_leh         (1 << 2)        /* lowered eh */
 221 #define PROP_cfg                (1 << 3)
 222 #define PROP_referenced_vars    (1 << 4)
 223 #define PROP_ssa                (1 << 5)
 224 #define PROP_no_crit_edges      (1 << 6)
 225 #define PROP_rtl                (1 << 7)
 226 #define PROP_gimple_lomp        (1 << 8)        /* lowered OpenMP directives */
 227 #define PROP_cfglayout          (1 << 9)        /* cfglayout mode on RTL */
 228
 229 #define PROP_trees \
 230   (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp)
 231
 232 /* To-do flags.  */
 233 #define TODO_dump_func                  (1 << 0)
 234 #define TODO_ggc_collect                (1 << 1)
 235 #define TODO_verify_ssa                 (1 << 2)
 236 #define TODO_verify_flow                (1 << 3)
 237 #define TODO_verify_stmts               (1 << 4)
 238 #define TODO_cleanup_cfg                (1 << 5)
 239 #define TODO_verify_loops               (1 << 6)
 240 #define TODO_dump_cgraph                (1 << 7)
 241 #define TODO_remove_functions           (1 << 8)
 242 #define TODO_rebuild_frequencies        (1 << 9)
 243 #define TODO_verify_rtl_sharing         (1 << 10)
 244
 245 /* To-do flags for calls to update_ssa.  */
 246
 247 /* Update the SSA form inserting PHI nodes for newly exposed symbols
 248    and virtual names marked for updating.  When updating real names,
 249    only insert PHI nodes for a real name O_j in blocks reached by all
 250    the new and old definitions for O_j.  If the iterated dominance
 251    frontier for O_j is not pruned, we may end up inserting PHI nodes
 252    in blocks that have one or more edges with no incoming definition
 253    for O_j.  This would lead to uninitialized warnings for O_j's
 254    symbol.  */
 255 #define TODO_update_ssa                 (1 << 11)
 256
 257 /* Update the SSA form without inserting any new PHI nodes at all.
 258    This is used by passes that have either inserted all the PHI nodes
 259    themselves or passes that need only to patch use-def and def-def
 260    chains for virtuals (e.g., DCE).  */
 261 #define TODO_update_ssa_no_phi          (1 << 12)
 262
 263 /* Insert PHI nodes everywhere they are needed.  No pruning of the
 264    IDF is done.  This is used by passes that need the PHI nodes for
 265    O_j even if it means that some arguments will come from the default
 266    definition of O_j's symbol (e.g., pass_linear_transform).
 267
 268    WARNING: If you need to use this flag, chances are that your pass
 269    may be doing something wrong.  Inserting PHI nodes for an old name
 270    where not all edges carry a new replacement may lead to silent
 271    codegen errors or spurious uninitialized warnings.  */
 272 #define TODO_update_ssa_full_phi        (1 << 13)
 273
 274 /* Passes that update the SSA form on their own may want to delegate
 275    the updating of virtual names to the generic updater.  Since FUD
 276    chains are easier to maintain, this simplifies the work they need
 277    to do.  NOTE: If this flag is used, any OLD->NEW mappings for real
 278    names are explicitly destroyed and only the symbols marked for
 279    renaming are processed.  */
 280 #define TODO_update_ssa_only_virtuals   (1 << 14)
 281
 282 /* Some passes leave unused local variables that can be removed from
 283    cfun->local_decls.  This reduces the size of dump files
 284    and the memory footprint for VAR_DECLs.  */
 285 #define TODO_remove_unused_locals       (1 << 15)
 286
 287 /* Call df_finish at the end of the pass.  This is done after all of
 288    the dumpers have been allowed to run so that they have access to
 289    the instance before it is destroyed.  */
 290 #define TODO_df_finish                  (1 << 17)
 291
 292 /* Call df_verify at the end of the pass if checking is enabled.  */
 293 #define TODO_df_verify                  (1 << 18)
 294
 295 /* Internally used for the first instance of a pass.  */
 296 #define TODO_mark_first_instance        (1 << 19)
 297
 298 /* Rebuild aliasing info.  */
 299 #define TODO_rebuild_alias              (1 << 20)
 300
 301 /* Rebuild the addressable-vars bitmap and do register promotion.  */
 302 #define TODO_update_address_taken       (1 << 21)
 303
 304 /* Internally used in execute_function_todo().  */
 305 #define TODO_update_ssa_any             \
 306     (TODO_update_ssa                    \
 307      | TODO_update_ssa_no_phi           \
 308      | TODO_update_ssa_full_phi         \
 309      | TODO_update_ssa_only_virtuals)
 310
 311 #define TODO_verify_all \
 312   (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts)
 313
 314
 315 /* Register pass info. */
 316
 317 enum pass_positioning_ops
 318 {
 319   PASS_POS_INSERT_AFTER,  /* Insert after the reference pass.  */
 320   PASS_POS_INSERT_BEFORE, /* Insert before the reference pass.  */
 321   PASS_POS_REPLACE        /* Replace the reference pass.  */
 322 };
 323
 324 struct register_pass_info
 325 {
 326   struct opt_pass *pass;            /* New pass to register.  */
 327   const char *reference_pass_name;  /* Name of the reference pass for hooking
 328                                        up the new pass.  */
 329   int ref_pass_instance_number;     /* Insert the pass at the specified
 330                                        instance number of the reference pass.
 331                                        Do it for every instance if it is 0.  */
 332   enum pass_positioning_ops pos_op; /* how to insert the new pass.  */
 333 };
 334
 335 extern void tree_lowering_passes (tree decl);
 336
 337 extern struct gimple_opt_pass pass_mudflap_1;
 338 extern struct gimple_opt_pass pass_mudflap_2;
 339 extern struct gimple_opt_pass pass_lower_cf;
 340 extern struct gimple_opt_pass pass_refactor_eh;
 341 extern struct gimple_opt_pass pass_lower_eh;
 342 extern struct gimple_opt_pass pass_lower_eh_dispatch;
 343 extern struct gimple_opt_pass pass_lower_resx;
 344 extern struct gimple_opt_pass pass_build_cfg;
 345 extern struct gimple_opt_pass pass_tree_profile;
 346 extern struct gimple_opt_pass pass_early_tree_profile;
 347 extern struct gimple_opt_pass pass_cleanup_cfg;
 348 extern struct gimple_opt_pass pass_referenced_vars;
 349 extern struct gimple_opt_pass pass_cleanup_eh;
 350 extern struct gimple_opt_pass pass_fixup_cfg;
 351 extern struct gimple_opt_pass pass_sra;
 352 extern struct gimple_opt_pass pass_sra_early;
 353 extern struct gimple_opt_pass pass_early_ipa_sra;
 354 extern struct gimple_opt_pass pass_tail_recursion;
 355 extern struct gimple_opt_pass pass_tail_calls;
 356 extern struct gimple_opt_pass pass_tree_loop;
 357 extern struct gimple_opt_pass pass_tree_loop_init;
 358 extern struct gimple_opt_pass pass_lim;
 359 extern struct gimple_opt_pass pass_tree_unswitch;
 360 extern struct gimple_opt_pass pass_predcom;
 361 extern struct gimple_opt_pass pass_iv_canon;
 362 extern struct gimple_opt_pass pass_scev_cprop;
 363 extern struct gimple_opt_pass pass_empty_loop;
 364 extern struct gimple_opt_pass pass_record_bounds;
 365 extern struct gimple_opt_pass pass_graphite_transforms;
 366 extern struct gimple_opt_pass pass_if_conversion;
 367 extern struct gimple_opt_pass pass_loop_distribution;
 368 extern struct gimple_opt_pass pass_vectorize;
 369 extern struct gimple_opt_pass pass_slp_vectorize;
 370 extern struct gimple_opt_pass pass_complete_unroll;
 371 extern struct gimple_opt_pass pass_complete_unrolli;
 372 extern struct gimple_opt_pass pass_parallelize_loops;
 373 extern struct gimple_opt_pass pass_loop_prefetch;
 374 extern struct gimple_opt_pass pass_iv_optimize;
 375 extern struct gimple_opt_pass pass_tree_loop_done;
 376 extern struct gimple_opt_pass pass_ch;
 377 extern struct gimple_opt_pass pass_ccp;
 378 extern struct gimple_opt_pass pass_phi_only_cprop;
 379 extern struct gimple_opt_pass pass_build_ssa;
 380 extern struct gimple_opt_pass pass_build_alias;
 381 extern struct gimple_opt_pass pass_build_ealias;
 382 extern struct gimple_opt_pass pass_dominator;
 383 extern struct gimple_opt_pass pass_dce;
 384 extern struct gimple_opt_pass pass_dce_loop;
 385 extern struct gimple_opt_pass pass_cd_dce;
 386 extern struct gimple_opt_pass pass_call_cdce;
 387 extern struct gimple_opt_pass pass_merge_phi;
 388 extern struct gimple_opt_pass pass_split_crit_edges;
 389 extern struct gimple_opt_pass pass_pre;
 390 extern struct gimple_opt_pass pass_profile;
 391 extern struct gimple_opt_pass pass_strip_predict_hints;
 392 extern struct gimple_opt_pass pass_lower_complex_O0;
 393 extern struct gimple_opt_pass pass_lower_complex;
 394 extern struct gimple_opt_pass pass_lower_vector;
 395 extern struct gimple_opt_pass pass_lower_vector_ssa;
 396 extern struct gimple_opt_pass pass_lower_omp;
 397 extern struct gimple_opt_pass pass_diagnose_omp_blocks;
 398 extern struct gimple_opt_pass pass_expand_omp;
 399 extern struct gimple_opt_pass pass_expand_omp_ssa;
 400 extern struct gimple_opt_pass pass_object_sizes;
 401 extern struct gimple_opt_pass pass_fold_builtins;
 402 extern struct gimple_opt_pass pass_stdarg;
 403 extern struct gimple_opt_pass pass_early_warn_uninitialized;
 404 extern struct gimple_opt_pass pass_late_warn_uninitialized;
 405 extern struct gimple_opt_pass pass_cse_reciprocals;
 406 extern struct gimple_opt_pass pass_cse_sincos;
 407 extern struct gimple_opt_pass pass_optimize_bswap;
 408 extern struct gimple_opt_pass pass_warn_function_return;
 409 extern struct gimple_opt_pass pass_warn_function_noreturn;
 410 extern struct gimple_opt_pass pass_cselim;
 411 extern struct gimple_opt_pass pass_phiopt;
 412 extern struct gimple_opt_pass pass_forwprop;
 413 extern struct gimple_opt_pass pass_phiprop;
 414 extern struct gimple_opt_pass pass_tree_ifcombine;
 415 extern struct gimple_opt_pass pass_dse;
 416 extern struct gimple_opt_pass pass_nrv;
 417 extern struct gimple_opt_pass pass_rename_ssa_copies;
 418 extern struct gimple_opt_pass pass_rest_of_compilation;
 419 extern struct gimple_opt_pass pass_sink_code;
 420 extern struct gimple_opt_pass pass_fre;
 421 extern struct gimple_opt_pass pass_linear_transform;
 422 extern struct gimple_opt_pass pass_check_data_deps;
 423 extern struct gimple_opt_pass pass_copy_prop;
 424 extern struct gimple_opt_pass pass_vrp;
 425 extern struct gimple_opt_pass pass_uncprop;
 426 extern struct gimple_opt_pass pass_return_slot;
 427 extern struct gimple_opt_pass pass_reassoc;
 428 extern struct gimple_opt_pass pass_rebuild_cgraph_edges;
 429 extern struct gimple_opt_pass pass_remove_cgraph_callee_edges;
 430 extern struct gimple_opt_pass pass_build_cgraph_edges;
 431 extern struct gimple_opt_pass pass_local_pure_const;
 432 extern struct gimple_opt_pass pass_tracer;
 433 extern struct gimple_opt_pass pass_warn_unused_result;
 434
 435 /* IPA Passes */
 436 extern struct simple_ipa_opt_pass pass_ipa_function_and_variable_visibility;
 437 extern struct simple_ipa_opt_pass pass_ipa_early_inline;
 438
 439 extern struct simple_ipa_opt_pass pass_early_local_passes;
 440
 441 extern struct ipa_opt_pass_d pass_ipa_whole_program_visibility;
 442 extern struct ipa_opt_pass_d pass_ipa_lto_gimple_out;
 443 extern struct simple_ipa_opt_pass pass_ipa_increase_alignment;
 444 extern struct simple_ipa_opt_pass pass_ipa_matrix_reorg;
 445 extern struct ipa_opt_pass_d pass_ipa_inline;
 446 extern struct simple_ipa_opt_pass pass_ipa_free_lang_data;
 447 extern struct ipa_opt_pass_d pass_ipa_cp;
 448 extern struct ipa_opt_pass_d pass_ipa_reference;
 449 extern struct ipa_opt_pass_d pass_ipa_pure_const;
 450 extern struct simple_ipa_opt_pass pass_ipa_type_escape;
 451 extern struct simple_ipa_opt_pass pass_ipa_pta;
 452 extern struct simple_ipa_opt_pass pass_ipa_struct_reorg;
 453 extern struct ipa_opt_pass_d pass_ipa_lto_wpa_fixup;
 454 extern struct ipa_opt_pass_d pass_ipa_lto_finish_out;
 455
 456 extern struct gimple_opt_pass pass_all_optimizations;
 457 extern struct gimple_opt_pass pass_cleanup_cfg_post_optimizing;
 458 extern struct gimple_opt_pass pass_init_datastructures;
 459 extern struct gimple_opt_pass pass_fixup_cfg;
 460
 461 extern struct rtl_opt_pass pass_expand;
 462 extern struct rtl_opt_pass pass_init_function;
 463 extern struct rtl_opt_pass pass_jump;
 464 extern struct rtl_opt_pass pass_rtl_eh;
 465 extern struct rtl_opt_pass pass_initial_value_sets;
 466 extern struct rtl_opt_pass pass_unshare_all_rtl;
 467 extern struct rtl_opt_pass pass_instantiate_virtual_regs;
 468 extern struct rtl_opt_pass pass_rtl_fwprop;
 469 extern struct rtl_opt_pass pass_rtl_fwprop_addr;
 470 extern struct rtl_opt_pass pass_jump2;
 471 extern struct rtl_opt_pass pass_lower_subreg;
 472 extern struct rtl_opt_pass pass_cse;
 473 extern struct rtl_opt_pass pass_fast_rtl_dce;
 474 extern struct rtl_opt_pass pass_ud_rtl_dce;
 475 extern struct rtl_opt_pass pass_rtl_dce;
 476 extern struct rtl_opt_pass pass_rtl_dse1;
 477 extern struct rtl_opt_pass pass_rtl_dse2;
 478 extern struct rtl_opt_pass pass_rtl_dse3;
 479 extern struct rtl_opt_pass pass_rtl_cprop;
 480 extern struct rtl_opt_pass pass_rtl_pre;
 481 extern struct rtl_opt_pass pass_rtl_hoist;
 482 extern struct rtl_opt_pass pass_rtl_store_motion;
 483 extern struct rtl_opt_pass pass_cse_after_global_opts;
 484 extern struct rtl_opt_pass pass_rtl_ifcvt;
 485
 486 extern struct rtl_opt_pass pass_into_cfg_layout_mode;
 487 extern struct rtl_opt_pass pass_outof_cfg_layout_mode;
 488
 489 extern struct rtl_opt_pass pass_loop2;
 490 extern struct rtl_opt_pass pass_rtl_loop_init;
 491 extern struct rtl_opt_pass pass_rtl_move_loop_invariants;
 492 extern struct rtl_opt_pass pass_rtl_unswitch;
 493 extern struct rtl_opt_pass pass_rtl_unroll_and_peel_loops;
 494 extern struct rtl_opt_pass pass_rtl_doloop;
 495 extern struct rtl_opt_pass pass_rtl_loop_done;
 496
 497 extern struct rtl_opt_pass pass_web;
 498 extern struct rtl_opt_pass pass_cse2;
 499 extern struct rtl_opt_pass pass_df_initialize_opt;
 500 extern struct rtl_opt_pass pass_df_initialize_no_opt;
 501 extern struct rtl_opt_pass pass_reginfo_init;
 502 extern struct rtl_opt_pass pass_inc_dec;
 503 extern struct rtl_opt_pass pass_stack_ptr_mod;
 504 extern struct rtl_opt_pass pass_initialize_regs;
 505 extern struct rtl_opt_pass pass_combine;
 506 extern struct rtl_opt_pass pass_if_after_combine;
 507 extern struct rtl_opt_pass pass_partition_blocks;
 508 extern struct rtl_opt_pass pass_match_asm_constraints;
 509 extern struct rtl_opt_pass pass_regmove;
 510 extern struct rtl_opt_pass pass_split_all_insns;
 511 extern struct rtl_opt_pass pass_fast_rtl_byte_dce;
 512 extern struct rtl_opt_pass pass_lower_subreg2;
 513 extern struct rtl_opt_pass pass_mode_switching;
 514 extern struct rtl_opt_pass pass_sms;
 515 extern struct rtl_opt_pass pass_sched;
 516 extern struct rtl_opt_pass pass_ira;
 517 extern struct rtl_opt_pass pass_postreload;
 518 extern struct rtl_opt_pass pass_clean_state;
 519 extern struct rtl_opt_pass pass_branch_prob;
 520 extern struct rtl_opt_pass pass_value_profile_transformations;
 521 extern struct rtl_opt_pass pass_postreload_cse;
 522 extern struct rtl_opt_pass pass_gcse2;
 523 extern struct rtl_opt_pass pass_split_after_reload;
 524 extern struct rtl_opt_pass pass_branch_target_load_optimize1;
 525 extern struct rtl_opt_pass pass_thread_prologue_and_epilogue;
 526 extern struct rtl_opt_pass pass_stack_adjustments;
 527 extern struct rtl_opt_pass pass_peephole2;
 528 extern struct rtl_opt_pass pass_if_after_reload;
 529 extern struct rtl_opt_pass pass_regrename;
 530 extern struct rtl_opt_pass pass_cprop_hardreg;
 531 extern struct rtl_opt_pass pass_reorder_blocks;
 532 extern struct rtl_opt_pass pass_branch_target_load_optimize2;
 533 extern struct rtl_opt_pass pass_leaf_regs;
 534 extern struct rtl_opt_pass pass_split_before_sched2;
 535 extern struct rtl_opt_pass pass_sched2;
 536 extern struct rtl_opt_pass pass_stack_regs;
 537 extern struct rtl_opt_pass pass_stack_regs_run;
 538 extern struct rtl_opt_pass pass_df_finish;
 539 extern struct rtl_opt_pass pass_compute_alignments;
 540 extern struct rtl_opt_pass pass_duplicate_computed_gotos;
 541 extern struct rtl_opt_pass pass_variable_tracking;
 542 extern struct rtl_opt_pass pass_free_cfg;
 543 extern struct rtl_opt_pass pass_machine_reorg;
 544 extern struct rtl_opt_pass pass_cleanup_barriers;
 545 extern struct rtl_opt_pass pass_delay_slots;
 546 extern struct rtl_opt_pass pass_split_for_shorten_branches;
 547 extern struct rtl_opt_pass pass_split_before_regstack;
 548 extern struct rtl_opt_pass pass_convert_to_eh_region_ranges;
 549 extern struct rtl_opt_pass pass_shorten_branches;
 550 extern struct rtl_opt_pass pass_set_nothrow_function_flags;
 551 extern struct rtl_opt_pass pass_final;
 552 extern struct rtl_opt_pass pass_rtl_seqabstr;
 553 extern struct gimple_opt_pass pass_release_ssa_names;
 554 extern struct gimple_opt_pass pass_early_inline;
 555 extern struct gimple_opt_pass pass_inline_parameters;
 556 extern struct gimple_opt_pass pass_all_early_optimizations;
 557 extern struct gimple_opt_pass pass_update_address_taken;
 558 extern struct gimple_opt_pass pass_convert_switch;
 559
 560 /* The root of the compilation pass tree, once constructed.  */
 561 extern struct opt_pass *all_passes, *all_small_ipa_passes, *all_lowering_passes,
 562                        *all_regular_ipa_passes, *all_lto_gen_passes;
 563
 564 /* Current optimization pass.  */
 565 extern struct opt_pass *current_pass;
 566
 567 extern struct opt_pass * get_pass_for_id (int);
 568 extern void execute_pass_list (struct opt_pass *);
 569 extern void execute_ipa_pass_list (struct opt_pass *);
 570 extern void execute_ipa_summary_passes (struct ipa_opt_pass_d *);
 571 extern void execute_all_ipa_transforms (void);
 572 extern void execute_all_ipa_stmt_fixups (struct cgraph_node *, gimple *);
 573
 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 #endif /* GCC_TREE_PASS_H */