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