gcc/tree-pass.h

   1 /* Definitions for describing one tree-ssa optimization pass.
   2    Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
   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 #define TDF_ENUMERATE_LOCALS (1 << 22)  /* Enumerate locals by uid.  */
  85 #define TDF_CSELIB      (1 << 23)       /* Dump cselib details.  */
  86 #define TDF_SCEV        (1 << 24)       /* Dump SCEV details.  */
  87
  88
  89 /* In tree-dump.c */
  90
  91 extern char *get_dump_file_name (int);
  92 extern int dump_enabled_p (int);
  93 extern int dump_initialized_p (int);
  94 extern FILE *dump_begin (int, int *);
  95 extern void dump_end (int, FILE *);
  96 extern void dump_node (const_tree, int, FILE *);
  97 extern int dump_switch_p (const char *);
  98 extern const char *dump_flag_name (int);
  99
 100 /* Global variables used to communicate with passes.  */
 101 extern FILE *dump_file;
 102 extern int dump_flags;
 103 extern const char *dump_file_name;
 104
 105 /* Return the dump_file_info for the given phase.  */
 106 extern struct dump_file_info *get_dump_file_info (int);
 107
 108 /* Optimization pass type.  */
 109 enum opt_pass_type
 110 {
 111   GIMPLE_PASS,
 112   RTL_PASS,
 113   SIMPLE_IPA_PASS,
 114   IPA_PASS
 115 };
 116
 117 /* Describe one pass; this is the common part shared across different pass
 118    types.  */
 119 struct opt_pass
 120 {
 121   /* Optimization pass type.  */
 122   enum opt_pass_type type;
 123
 124   /* Terse name of the pass used as a fragment of the dump file
 125      name.  If the name starts with a star, no dump happens. */
 126   const char *name;
 127
 128   /* If non-null, this pass and all sub-passes are executed only if
 129      the function returns true.  */
 130   bool (*gate) (void);
 131
 132   /* This is the code to run.  If null, then there should be sub-passes
 133      otherwise this pass does nothing.  The return value contains
 134      TODOs to execute in addition to those in TODO_flags_finish.   */
 135   unsigned int (*execute) (void);
 136
 137   /* A list of sub-passes to run, dependent on gate predicate.  */
 138   struct opt_pass *sub;
 139
 140   /* Next in the list of passes to run, independent of gate predicate.  */
 141   struct opt_pass *next;
 142
 143   /* Static pass number, used as a fragment of the dump file name.  */
 144   int static_pass_number;
 145
 146   /* The timevar id associated with this pass.  */
 147   /* ??? Ideally would be dynamically assigned.  */
 148   timevar_id_t tv_id;
 149
 150   /* Sets of properties input and output from this pass.  */
 151   unsigned int properties_required;
 152   unsigned int properties_provided;
 153   unsigned int properties_destroyed;
 154
 155   /* Flags indicating common sets things to do before and after.  */
 156   unsigned int todo_flags_start;
 157   unsigned int todo_flags_finish;
 158 };
 159
 160 /* Description of GIMPLE pass.  */
 161 struct gimple_opt_pass
 162 {
 163   struct opt_pass pass;
 164 };
 165
 166 /* Description of RTL pass.  */
 167 struct rtl_opt_pass
 168 {
 169   struct opt_pass pass;
 170 };
 171
 172 struct varpool_node;
 173 struct cgraph_node;
 174 struct cgraph_node_set_def;
 175 struct varpool_node_set_def;
 176
 177 /* Description of IPA pass with generate summary, write, execute, read and
 178    transform stages.  */
 179 struct ipa_opt_pass_d
 180 {
 181   struct opt_pass pass;
 182
 183   /* IPA passes can analyze function body and variable initializers
 184       using this hook and produce summary.  */
 185   void (*generate_summary) (void);
 186
 187   /* This hook is used to serialize IPA summaries on disk.  */
 188   void (*write_summary) (struct cgraph_node_set_def *,
 189                          struct varpool_node_set_def *);
 190
 191   /* This hook is used to deserialize IPA summaries from disk.  */
 192   void (*read_summary) (void);
 193
 194   /* This hook is used to serialize IPA optimization summaries on disk.  */
 195   void (*write_optimization_summary) (struct cgraph_node_set_def *,
 196                                       struct varpool_node_set_def *);
 197
 198   /* This hook is used to deserialize IPA summaries from disk.  */
 199   void (*read_optimization_summary) (void);
 200
 201   /* Hook to convert gimple stmt uids into true gimple statements.  The second
 202      parameter is an array of statements indexed by their uid. */
 203   void (*stmt_fixup) (struct cgraph_node *, gimple *);
 204
 205   /* Results of interprocedural propagation of an IPA pass is applied to
 206      function body via this hook.  */
 207   unsigned int function_transform_todo_flags_start;
 208   unsigned int (*function_transform) (struct cgraph_node *);
 209   void (*variable_transform) (struct varpool_node *);
 210 };
 211
 212 /* Description of simple IPA pass.  Simple IPA passes have just one execute
 213    hook.  */
 214 struct simple_ipa_opt_pass
 215 {
 216   struct opt_pass pass;
 217 };
 218
 219 /* Define a tree dump switch.  */
 220 struct dump_file_info
 221 {
 222   const char *suffix;           /* suffix to give output file.  */
 223   const char *swtch;            /* command line switch */
 224   const char *glob;             /* command line glob  */
 225   int flags;                    /* user flags */
 226   int state;                    /* state of play */
 227   int num;                      /* dump file number */
 228 };
 229
 230 /* Pass properties.  */
 231 #define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
 232 #define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
 233 #define PROP_gimple_leh         (1 << 2)        /* lowered eh */
 234 #define PROP_cfg                (1 << 3)
 235 #define PROP_referenced_vars    (1 << 4)
 236 #define PROP_ssa                (1 << 5)
 237 #define PROP_no_crit_edges      (1 << 6)
 238 #define PROP_rtl                (1 << 7)
 239 #define PROP_gimple_lomp        (1 << 8)        /* lowered OpenMP directives */
 240 #define PROP_cfglayout          (1 << 9)        /* cfglayout mode on RTL */
 241 #define PROP_gimple_lcx         (1 << 10)       /* lowered complex */
 242 #define PROP_loops              (1 << 11)       /* preserve loop structures */
 243
 244 #define PROP_trees \
 245   (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp)
 246
 247 /* To-do flags.  */
 248 #define TODO_ggc_collect                (1 << 1)
 249 #define TODO_verify_ssa                 (1 << 2)
 250 #define TODO_verify_flow                (1 << 3)
 251 #define TODO_verify_stmts               (1 << 4)
 252 #define TODO_cleanup_cfg                (1 << 5)
 253 #define TODO_dump_symtab                (1 << 7)
 254 #define TODO_remove_functions           (1 << 8)
 255 #define TODO_rebuild_frequencies        (1 << 9)
 256 #define TODO_verify_rtl_sharing         (1 << 10)
 257
 258 /* To-do flags for calls to update_ssa.  */
 259
 260 /* Update the SSA form inserting PHI nodes for newly exposed symbols
 261    and virtual names marked for updating.  When updating real names,
 262    only insert PHI nodes for a real name O_j in blocks reached by all
 263    the new and old definitions for O_j.  If the iterated dominance
 264    frontier for O_j is not pruned, we may end up inserting PHI nodes
 265    in blocks that have one or more edges with no incoming definition
 266    for O_j.  This would lead to uninitialized warnings for O_j's
 267    symbol.  */
 268 #define TODO_update_ssa                 (1 << 11)
 269
 270 /* Update the SSA form without inserting any new PHI nodes at all.
 271    This is used by passes that have either inserted all the PHI nodes
 272    themselves or passes that need only to patch use-def and def-def
 273    chains for virtuals (e.g., DCE).  */
 274 #define TODO_update_ssa_no_phi          (1 << 12)
 275
 276 /* Insert PHI nodes everywhere they are needed.  No pruning of the
 277    IDF is done.  This is used by passes that need the PHI nodes for
 278    O_j even if it means that some arguments will come from the default
 279    definition of O_j's symbol.
 280
 281    WARNING: If you need to use this flag, chances are that your pass
 282    may be doing something wrong.  Inserting PHI nodes for an old name
 283    where not all edges carry a new replacement may lead to silent
 284    codegen errors or spurious uninitialized warnings.  */
 285 #define TODO_update_ssa_full_phi        (1 << 13)
 286
 287 /* Passes that update the SSA form on their own may want to delegate
 288    the updating of virtual names to the generic updater.  Since FUD
 289    chains are easier to maintain, this simplifies the work they need
 290    to do.  NOTE: If this flag is used, any OLD->NEW mappings for real
 291    names are explicitly destroyed and only the symbols marked for
 292    renaming are processed.  */
 293 #define TODO_update_ssa_only_virtuals   (1 << 14)
 294
 295 /* Some passes leave unused local variables that can be removed from
 296    cfun->local_decls.  This reduces the size of dump files
 297    and the memory footprint for VAR_DECLs.  */
 298 #define TODO_remove_unused_locals       (1 << 15)
 299
 300 /* Call df_finish at the end of the pass.  This is done after all of
 301    the dumpers have been allowed to run so that they have access to
 302    the instance before it is destroyed.  */
 303 #define TODO_df_finish                  (1 << 17)
 304
 305 /* Call df_verify at the end of the pass if checking is enabled.  */
 306 #define TODO_df_verify                  (1 << 18)
 307
 308 /* Internally used for the first instance of a pass.  */
 309 #define TODO_mark_first_instance        (1 << 19)
 310
 311 /* Rebuild aliasing info.  */
 312 #define TODO_rebuild_alias              (1 << 20)
 313
 314 /* Rebuild the addressable-vars bitmap and do register promotion.  */
 315 #define TODO_update_address_taken       (1 << 21)
 316
 317 /* Rebuild the callgraph edges.  */
 318 #define TODO_rebuild_cgraph_edges       (1 << 22)
 319
 320 /* Internally used in execute_function_todo().  */
 321 #define TODO_update_ssa_any             \
 322     (TODO_update_ssa                    \
 323      | TODO_update_ssa_no_phi           \
 324      | TODO_update_ssa_full_phi         \
 325      | TODO_update_ssa_only_virtuals)
 326
 327 #define TODO_verify_all \
 328   (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts)
 329
 330
 331 /* Register pass info. */
 332
 333 enum pass_positioning_ops
 334 {
 335   PASS_POS_INSERT_AFTER,  /* Insert after the reference pass.  */
 336   PASS_POS_INSERT_BEFORE, /* Insert before the reference pass.  */
 337   PASS_POS_REPLACE        /* Replace the reference pass.  */
 338 };
 339
 340 struct register_pass_info
 341 {
 342   struct opt_pass *pass;            /* New pass to register.  */
 343   const char *reference_pass_name;  /* Name of the reference pass for hooking
 344                                        up the new pass.  */
 345   int ref_pass_instance_number;     /* Insert the pass at the specified
 346                                        instance number of the reference pass.
 347                                        Do it for every instance if it is 0.  */
 348   enum pass_positioning_ops pos_op; /* how to insert the new pass.  */
 349 };
 350
 351 extern struct gimple_opt_pass pass_mudflap_1;
 352 extern struct gimple_opt_pass pass_mudflap_2;
 353 extern struct gimple_opt_pass pass_lower_cf;
 354 extern struct gimple_opt_pass pass_refactor_eh;
 355 extern struct gimple_opt_pass pass_lower_eh;
 356 extern struct gimple_opt_pass pass_lower_eh_dispatch;
 357 extern struct gimple_opt_pass pass_lower_resx;
 358 extern struct gimple_opt_pass pass_build_cfg;
 359 extern struct gimple_opt_pass pass_early_tree_profile;
 360 extern struct gimple_opt_pass pass_referenced_vars;
 361 extern struct gimple_opt_pass pass_cleanup_eh;
 362 extern struct gimple_opt_pass pass_sra;
 363 extern struct gimple_opt_pass pass_sra_early;
 364 extern struct gimple_opt_pass pass_early_ipa_sra;
 365 extern struct gimple_opt_pass pass_tail_recursion;
 366 extern struct gimple_opt_pass pass_tail_calls;
 367 extern struct gimple_opt_pass pass_tree_loop;
 368 extern struct gimple_opt_pass pass_tree_loop_init;
 369 extern struct gimple_opt_pass pass_lim;
 370 extern struct gimple_opt_pass pass_tree_unswitch;
 371 extern struct gimple_opt_pass pass_predcom;
 372 extern struct gimple_opt_pass pass_iv_canon;
 373 extern struct gimple_opt_pass pass_scev_cprop;
 374 extern struct gimple_opt_pass pass_empty_loop;
 375 extern struct gimple_opt_pass pass_record_bounds;
 376 extern struct gimple_opt_pass pass_graphite;
 377 extern struct gimple_opt_pass pass_graphite_transforms;
 378 extern struct gimple_opt_pass pass_if_conversion;
 379 extern struct gimple_opt_pass pass_loop_distribution;
 380 extern struct gimple_opt_pass pass_vectorize;
 381 extern struct gimple_opt_pass pass_slp_vectorize;
 382 extern struct gimple_opt_pass pass_complete_unroll;
 383 extern struct gimple_opt_pass pass_complete_unrolli;
 384 extern struct gimple_opt_pass pass_parallelize_loops;
 385 extern struct gimple_opt_pass pass_loop_prefetch;
 386 extern struct gimple_opt_pass pass_iv_optimize;
 387 extern struct gimple_opt_pass pass_tree_loop_done;
 388 extern struct gimple_opt_pass pass_ch;
 389 extern struct gimple_opt_pass pass_ccp;
 390 extern struct gimple_opt_pass pass_phi_only_cprop;
 391 extern struct gimple_opt_pass pass_build_ssa;
 392 extern struct gimple_opt_pass pass_build_alias;
 393 extern struct gimple_opt_pass pass_build_ealias;
 394 extern struct gimple_opt_pass pass_dominator;
 395 extern struct gimple_opt_pass pass_dce;
 396 extern struct gimple_opt_pass pass_dce_loop;
 397 extern struct gimple_opt_pass pass_cd_dce;
 398 extern struct gimple_opt_pass pass_call_cdce;
 399 extern struct gimple_opt_pass pass_merge_phi;
 400 extern struct gimple_opt_pass pass_split_crit_edges;
 401 extern struct gimple_opt_pass pass_pre;
 402 extern unsigned int tail_merge_optimize (unsigned int);
 403 extern struct gimple_opt_pass pass_profile;
 404 extern struct gimple_opt_pass pass_strip_predict_hints;
 405 extern struct gimple_opt_pass pass_lower_complex_O0;
 406 extern struct gimple_opt_pass pass_lower_complex;
 407 extern struct gimple_opt_pass pass_lower_vector;
 408 extern struct gimple_opt_pass pass_lower_vector_ssa;
 409 extern struct gimple_opt_pass pass_lower_omp;
 410 extern struct gimple_opt_pass pass_diagnose_omp_blocks;
 411 extern struct gimple_opt_pass pass_expand_omp;
 412 extern struct gimple_opt_pass pass_expand_omp_ssa;
 413 extern struct gimple_opt_pass pass_object_sizes;
 414 extern struct gimple_opt_pass pass_strlen;
 415 extern struct gimple_opt_pass pass_fold_builtins;
 416 extern struct gimple_opt_pass pass_stdarg;
 417 extern struct gimple_opt_pass pass_early_warn_uninitialized;
 418 extern struct gimple_opt_pass pass_late_warn_uninitialized;
 419 extern struct gimple_opt_pass pass_cse_reciprocals;
 420 extern struct gimple_opt_pass pass_cse_sincos;
 421 extern struct gimple_opt_pass pass_optimize_bswap;
 422 extern struct gimple_opt_pass pass_optimize_widening_mul;
 423 extern struct gimple_opt_pass pass_warn_function_return;
 424 extern struct gimple_opt_pass pass_warn_function_noreturn;
 425 extern struct gimple_opt_pass pass_cselim;
 426 extern struct gimple_opt_pass pass_phiopt;
 427 extern struct gimple_opt_pass pass_forwprop;
 428 extern struct gimple_opt_pass pass_phiprop;
 429 extern struct gimple_opt_pass pass_tree_ifcombine;
 430 extern struct gimple_opt_pass pass_dse;
 431 extern struct gimple_opt_pass pass_nrv;
 432 extern struct gimple_opt_pass pass_rename_ssa_copies;
 433 extern struct gimple_opt_pass pass_sink_code;
 434 extern struct gimple_opt_pass pass_fre;
 435 extern struct gimple_opt_pass pass_check_data_deps;
 436 extern struct gimple_opt_pass pass_copy_prop;
 437 extern struct gimple_opt_pass pass_vrp;
 438 extern struct gimple_opt_pass pass_uncprop;
 439 extern struct gimple_opt_pass pass_return_slot;
 440 extern struct gimple_opt_pass pass_reassoc;
 441 extern struct gimple_opt_pass pass_rebuild_cgraph_edges;
 442 extern struct gimple_opt_pass pass_remove_cgraph_callee_edges;
 443 extern struct gimple_opt_pass pass_build_cgraph_edges;
 444 extern struct gimple_opt_pass pass_local_pure_const;
 445 extern struct gimple_opt_pass pass_tracer;
 446 extern struct gimple_opt_pass pass_warn_unused_result;
 447 extern struct gimple_opt_pass pass_diagnose_tm_blocks;
 448 extern struct gimple_opt_pass pass_lower_tm;
 449 extern struct gimple_opt_pass pass_tm_init;
 450 extern struct gimple_opt_pass pass_tm_mark;
 451 extern struct gimple_opt_pass pass_tm_memopt;
 452 extern struct gimple_opt_pass pass_tm_edges;
 453 extern struct gimple_opt_pass pass_split_functions;
 454 extern struct gimple_opt_pass pass_feedback_split_functions;
 455 extern struct gimple_opt_pass pass_strength_reduction;
 456
 457 /* IPA Passes */
 458 extern struct simple_ipa_opt_pass pass_ipa_lower_emutls;
 459 extern struct simple_ipa_opt_pass pass_ipa_function_and_variable_visibility;
 460 extern struct simple_ipa_opt_pass pass_ipa_tree_profile;
 461
 462 extern struct simple_ipa_opt_pass pass_early_local_passes;
 463
 464 extern struct ipa_opt_pass_d pass_ipa_whole_program_visibility;
 465 extern struct ipa_opt_pass_d pass_ipa_lto_gimple_out;
 466 extern struct simple_ipa_opt_pass pass_ipa_increase_alignment;
 467 extern struct simple_ipa_opt_pass pass_ipa_matrix_reorg;
 468 extern struct ipa_opt_pass_d pass_ipa_inline;
 469 extern struct simple_ipa_opt_pass pass_ipa_free_lang_data;
 470 extern struct ipa_opt_pass_d pass_ipa_cp;
 471 extern struct ipa_opt_pass_d pass_ipa_reference;
 472 extern struct ipa_opt_pass_d pass_ipa_pure_const;
 473 extern struct simple_ipa_opt_pass pass_ipa_pta;
 474 extern struct ipa_opt_pass_d pass_ipa_lto_wpa_fixup;
 475 extern struct ipa_opt_pass_d pass_ipa_lto_finish_out;
 476 extern struct simple_ipa_opt_pass pass_ipa_tm;
 477 extern struct ipa_opt_pass_d pass_ipa_profile;
 478 extern struct ipa_opt_pass_d pass_ipa_cdtor_merge;
 479
 480 extern struct gimple_opt_pass pass_cleanup_cfg_post_optimizing;
 481 extern struct gimple_opt_pass pass_init_datastructures;
 482 extern struct gimple_opt_pass pass_fixup_cfg;
 483
 484 extern struct rtl_opt_pass pass_expand;
 485 extern struct rtl_opt_pass pass_instantiate_virtual_regs;
 486 extern struct rtl_opt_pass pass_rtl_fwprop;
 487 extern struct rtl_opt_pass pass_rtl_fwprop_addr;
 488 extern struct rtl_opt_pass pass_jump;
 489 extern struct rtl_opt_pass pass_jump2;
 490 extern struct rtl_opt_pass pass_lower_subreg;
 491 extern struct rtl_opt_pass pass_cse;
 492 extern struct rtl_opt_pass pass_fast_rtl_dce;
 493 extern struct rtl_opt_pass pass_ud_rtl_dce;
 494 extern struct rtl_opt_pass pass_rtl_dce;
 495 extern struct rtl_opt_pass pass_rtl_dse1;
 496 extern struct rtl_opt_pass pass_rtl_dse2;
 497 extern struct rtl_opt_pass pass_rtl_dse3;
 498 extern struct rtl_opt_pass pass_rtl_cprop;
 499 extern struct rtl_opt_pass pass_rtl_pre;
 500 extern struct rtl_opt_pass pass_rtl_hoist;
 501 extern struct rtl_opt_pass pass_rtl_store_motion;
 502 extern struct rtl_opt_pass pass_cse_after_global_opts;
 503 extern struct rtl_opt_pass pass_rtl_ifcvt;
 504
 505 extern struct rtl_opt_pass pass_into_cfg_layout_mode;
 506 extern struct rtl_opt_pass pass_outof_cfg_layout_mode;
 507
 508 extern struct rtl_opt_pass pass_loop2;
 509 extern struct rtl_opt_pass pass_rtl_loop_init;
 510 extern struct rtl_opt_pass pass_rtl_move_loop_invariants;
 511 extern struct rtl_opt_pass pass_rtl_unswitch;
 512 extern struct rtl_opt_pass pass_rtl_unroll_and_peel_loops;
 513 extern struct rtl_opt_pass pass_rtl_doloop;
 514 extern struct rtl_opt_pass pass_rtl_loop_done;
 515
 516 extern struct rtl_opt_pass pass_web;
 517 extern struct rtl_opt_pass pass_cse2;
 518 extern struct rtl_opt_pass pass_df_initialize_opt;
 519 extern struct rtl_opt_pass pass_df_initialize_no_opt;
 520 extern struct rtl_opt_pass pass_reginfo_init;
 521 extern struct rtl_opt_pass pass_inc_dec;
 522 extern struct rtl_opt_pass pass_stack_ptr_mod;
 523 extern struct rtl_opt_pass pass_initialize_regs;
 524 extern struct rtl_opt_pass pass_combine;
 525 extern struct rtl_opt_pass pass_if_after_combine;
 526 extern struct rtl_opt_pass pass_ree;
 527 extern struct rtl_opt_pass pass_partition_blocks;
 528 extern struct rtl_opt_pass pass_match_asm_constraints;
 529 extern struct rtl_opt_pass pass_regmove;
 530 extern struct rtl_opt_pass pass_split_all_insns;
 531 extern struct rtl_opt_pass pass_fast_rtl_byte_dce;
 532 extern struct rtl_opt_pass pass_lower_subreg2;
 533 extern struct rtl_opt_pass pass_mode_switching;
 534 extern struct rtl_opt_pass pass_sms;
 535 extern struct rtl_opt_pass pass_sched;
 536 extern struct rtl_opt_pass pass_ira;
 537 extern struct rtl_opt_pass pass_reload;
 538 extern struct rtl_opt_pass pass_clean_state;
 539 extern struct rtl_opt_pass pass_branch_prob;
 540 extern struct rtl_opt_pass pass_value_profile_transformations;
 541 extern struct rtl_opt_pass pass_postreload_cse;
 542 extern struct rtl_opt_pass pass_gcse2;
 543 extern struct rtl_opt_pass pass_split_after_reload;
 544 extern struct rtl_opt_pass pass_branch_target_load_optimize1;
 545 extern struct rtl_opt_pass pass_thread_prologue_and_epilogue;
 546 extern struct rtl_opt_pass pass_stack_adjustments;
 547 extern struct rtl_opt_pass pass_peephole2;
 548 extern struct rtl_opt_pass pass_if_after_reload;
 549 extern struct rtl_opt_pass pass_regrename;
 550 extern struct rtl_opt_pass pass_cprop_hardreg;
 551 extern struct rtl_opt_pass pass_reorder_blocks;
 552 extern struct rtl_opt_pass pass_branch_target_load_optimize2;
 553 extern struct rtl_opt_pass pass_leaf_regs;
 554 extern struct rtl_opt_pass pass_split_before_sched2;
 555 extern struct rtl_opt_pass pass_compare_elim_after_reload;
 556 extern struct rtl_opt_pass pass_sched2;
 557 extern struct rtl_opt_pass pass_stack_regs;
 558 extern struct rtl_opt_pass pass_stack_regs_run;
 559 extern struct rtl_opt_pass pass_df_finish;
 560 extern struct rtl_opt_pass pass_compute_alignments;
 561 extern struct rtl_opt_pass pass_duplicate_computed_gotos;
 562 extern struct rtl_opt_pass pass_variable_tracking;
 563 extern struct rtl_opt_pass pass_free_cfg;
 564 extern struct rtl_opt_pass pass_machine_reorg;
 565 extern struct rtl_opt_pass pass_cleanup_barriers;
 566 extern struct rtl_opt_pass pass_delay_slots;
 567 extern struct rtl_opt_pass pass_split_for_shorten_branches;
 568 extern struct rtl_opt_pass pass_split_before_regstack;
 569 extern struct rtl_opt_pass pass_convert_to_eh_region_ranges;
 570 extern struct rtl_opt_pass pass_shorten_branches;
 571 extern struct rtl_opt_pass pass_set_nothrow_function_flags;
 572 extern struct rtl_opt_pass pass_dwarf2_frame;
 573 extern struct rtl_opt_pass pass_final;
 574 extern struct rtl_opt_pass pass_rtl_seqabstr;
 575 extern struct gimple_opt_pass pass_release_ssa_names;
 576 extern struct gimple_opt_pass pass_early_inline;
 577 extern struct gimple_opt_pass pass_inline_parameters;
 578 extern struct gimple_opt_pass pass_update_address_taken;
 579 extern struct gimple_opt_pass pass_convert_switch;
 580
 581 /* The root of the compilation pass tree, once constructed.  */
 582 extern struct opt_pass *all_passes, *all_small_ipa_passes, *all_lowering_passes,
 583                        *all_regular_ipa_passes, *all_lto_gen_passes, *all_late_ipa_passes;
 584
 585 /* Define a list of pass lists so that both passes.c and plugins can easily
 586    find all the pass lists.  */
 587 #define GCC_PASS_LISTS \
 588   DEF_PASS_LIST (all_lowering_passes) \
 589   DEF_PASS_LIST (all_small_ipa_passes) \
 590   DEF_PASS_LIST (all_regular_ipa_passes) \
 591   DEF_PASS_LIST (all_lto_gen_passes) \
 592   DEF_PASS_LIST (all_passes)
 593
 594 #define DEF_PASS_LIST(LIST) PASS_LIST_NO_##LIST,
 595 enum
 596 {
 597   GCC_PASS_LISTS
 598   PASS_LIST_NUM
 599 };
 600 #undef DEF_PASS_LIST
 601
 602 /* This is used by plugins, and should also be used in
 603    passes.c:register_pass.  */
 604 extern struct opt_pass **gcc_pass_lists[];
 605
 606 /* Current optimization pass.  */
 607 extern struct opt_pass *current_pass;
 608
 609 extern struct opt_pass * get_pass_for_id (int);
 610 extern bool execute_one_pass (struct opt_pass *);
 611 extern void execute_pass_list (struct opt_pass *);
 612 extern void execute_ipa_pass_list (struct opt_pass *);
 613 extern void execute_ipa_summary_passes (struct ipa_opt_pass_d *);
 614 extern void execute_all_ipa_transforms (void);
 615 extern void execute_all_ipa_stmt_fixups (struct cgraph_node *, gimple *);
 616 extern bool pass_init_dump_file (struct opt_pass *);
 617 extern void pass_fini_dump_file (struct opt_pass *);
 618
 619 extern const char *get_current_pass_name (void);
 620 extern void print_current_pass (FILE *);
 621 extern void debug_pass (void);
 622 extern void ipa_write_summaries (void);
 623 extern void ipa_write_optimization_summaries (struct cgraph_node_set_def *,
 624                                               struct varpool_node_set_def *);
 625 extern void ipa_read_summaries (void);
 626 extern void ipa_read_optimization_summaries (void);
 627 extern void register_one_dump_file (struct opt_pass *);
 628 extern bool function_called_by_processed_nodes_p (void);
 629 extern void register_pass (struct register_pass_info *);
 630
 631 /* Set to true if the pass is called the first time during compilation of the
 632    current function.  Note that using this information in the optimization
 633    passes is considered not to be clean, and it should be avoided if possible.
 634    This flag is currently used to prevent loops from being peeled repeatedly
 635    in jump threading; it will be removed once we preserve loop structures
 636    throughout the compilation -- we will be able to mark the affected loops
 637    directly in jump threading, and avoid peeling them next time.  */
 638 extern bool first_pass_instance;
 639
 640 /* Declare for plugins.  */
 641 extern void do_per_function_toporder (void (*) (void *), void *);
 642
 643 extern void disable_pass (const char *);
 644 extern void enable_pass (const char *);
 645 extern void dump_passes (void);
 646
 647 #endif /* GCC_TREE_PASS_H */