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
  87
  88 /* In tree-dump.c */
  89
  90 extern char *get_dump_file_name (int);
  91 extern int dump_enabled_p (int);
  92 extern int dump_initialized_p (int);
  93 extern FILE *dump_begin (int, int *);
  94 extern void dump_end (int, FILE *);
  95 extern void dump_node (const_tree, int, FILE *);
  96 extern int dump_switch_p (const char *);
  97 extern const char *dump_flag_name (int);
  98
  99 /* Global variables used to communicate with passes.  */
 100 extern FILE *dump_file;
 101 extern int dump_flags;
 102 extern const char *dump_file_name;
 103
 104 /* Return the dump_file_info for the given phase.  */
 105 extern struct dump_file_info *get_dump_file_info (int);
 106
 107 /* Optimization pass type.  */
 108 enum opt_pass_type
 109 {
 110   GIMPLE_PASS,
 111   RTL_PASS,
 112   SIMPLE_IPA_PASS,
 113   IPA_PASS
 114 };
 115
 116 /* Describe one pass; this is the common part shared across different pass
 117    types.  */
 118 struct opt_pass
 119 {
 120   /* Optimization pass type.  */
 121   enum opt_pass_type type;
 122
 123   /* Terse name of the pass used as a fragment of the dump file
 124      name.  If the name starts with a star, no dump happens. */
 125   const char *name;
 126
 127   /* If non-null, this pass and all sub-passes are executed only if
 128      the function returns true.  */
 129   bool (*gate) (void);
 130
 131   /* This is the code to run.  If null, then there should be sub-passes
 132      otherwise this pass does nothing.  The return value contains
 133      TODOs to execute in addition to those in TODO_flags_finish.   */
 134   unsigned int (*execute) (void);
 135
 136   /* A list of sub-passes to run, dependent on gate predicate.  */
 137   struct opt_pass *sub;
 138
 139   /* Next in the list of passes to run, independent of gate predicate.  */
 140   struct opt_pass *next;
 141
 142   /* Static pass number, used as a fragment of the dump file name.  */
 143   int static_pass_number;
 144
 145   /* The timevar id associated with this pass.  */
 146   /* ??? Ideally would be dynamically assigned.  */
 147   timevar_id_t tv_id;
 148
 149   /* Sets of properties input and output from this pass.  */
 150   unsigned int properties_required;
 151   unsigned int properties_provided;
 152   unsigned int properties_destroyed;
 153
 154   /* Flags indicating common sets things to do before and after.  */
 155   unsigned int todo_flags_start;
 156   unsigned int todo_flags_finish;
 157 };
 158
 159 /* Description of GIMPLE pass.  */
 160 struct gimple_opt_pass
 161 {
 162   struct opt_pass pass;
 163 };
 164
 165 /* Description of RTL pass.  */
 166 struct rtl_opt_pass
 167 {
 168   struct opt_pass pass;
 169 };
 170
 171 struct varpool_node;
 172 struct cgraph_node;
 173 struct cgraph_node_set_def;
 174 struct varpool_node_set_def;
 175
 176 /* Description of IPA pass with generate summary, write, execute, read and
 177    transform stages.  */
 178 struct ipa_opt_pass_d
 179 {
 180   struct opt_pass pass;
 181
 182   /* IPA passes can analyze function body and variable initializers
 183       using this hook and produce summary.  */
 184   void (*generate_summary) (void);
 185
 186   /* This hook is used to serialize IPA summaries on disk.  */
 187   void (*write_summary) (struct cgraph_node_set_def *,
 188                          struct varpool_node_set_def *);
 189
 190   /* This hook is used to deserialize IPA summaries from disk.  */
 191   void (*read_summary) (void);
 192
 193   /* This hook is used to serialize IPA optimization summaries on disk.  */
 194   void (*write_optimization_summary) (struct cgraph_node_set_def *,
 195                                       struct varpool_node_set_def *);
 196
 197   /* This hook is used to deserialize IPA summaries from disk.  */
 198   void (*read_optimization_summary) (void);
 199
 200   /* Hook to convert gimple stmt uids into true gimple statements.  The second
 201      parameter is an array of statements indexed by their uid. */
 202   void (*stmt_fixup) (struct cgraph_node *, gimple *);
 203
 204   /* Results of interprocedural propagation of an IPA pass is applied to
 205      function body via this hook.  */
 206   unsigned int function_transform_todo_flags_start;
 207   unsigned int (*function_transform) (struct cgraph_node *);
 208   void (*variable_transform) (struct varpool_node *);
 209 };
 210
 211 /* Description of simple IPA pass.  Simple IPA passes have just one execute
 212    hook.  */
 213 struct simple_ipa_opt_pass
 214 {
 215   struct opt_pass pass;
 216 };
 217
 218 /* Define a tree dump switch.  */
 219 struct dump_file_info
 220 {
 221   const char *suffix;           /* suffix to give output file.  */
 222   const char *swtch;            /* command line switch */
 223   const char *glob;             /* command line glob  */
 224   int flags;                    /* user flags */
 225   int state;                    /* state of play */
 226   int num;                      /* dump file number */
 227 };
 228
 229 /* Pass properties.  */
 230 #define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
 231 #define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
 232 #define PROP_gimple_leh         (1 << 2)        /* lowered eh */
 233 #define PROP_cfg                (1 << 3)
 234 #define PROP_referenced_vars    (1 << 4)
 235 #define PROP_ssa                (1 << 5)
 236 #define PROP_no_crit_edges      (1 << 6)
 237 #define PROP_rtl                (1 << 7)
 238 #define PROP_gimple_lomp        (1 << 8)        /* lowered OpenMP directives */
 239 #define PROP_cfglayout          (1 << 9)        /* cfglayout mode on RTL */
 240 #define PROP_gimple_lcx         (1 << 10)       /* lowered complex */
 241
 242 #define PROP_trees \
 243   (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp)
 244
 245 /* To-do flags.  */
 246 #define TODO_dump_func                  (1 << 0)
 247 #define TODO_ggc_collect                (1 << 1)
 248 #define TODO_verify_ssa                 (1 << 2)
 249 #define TODO_verify_flow                (1 << 3)
 250 #define TODO_verify_stmts               (1 << 4)
 251 #define TODO_cleanup_cfg                (1 << 5)
 252 #define TODO_dump_cgraph                (1 << 7)
 253 #define TODO_remove_functions           (1 << 8)
 254 #define TODO_rebuild_frequencies        (1 << 9)
 255 #define TODO_verify_rtl_sharing         (1 << 10)
 256
 257 /* To-do flags for calls to update_ssa.  */
 258
 259 /* Update the SSA form inserting PHI nodes for newly exposed symbols
 260    and virtual names marked for updating.  When updating real names,
 261    only insert PHI nodes for a real name O_j in blocks reached by all
 262    the new and old definitions for O_j.  If the iterated dominance
 263    frontier for O_j is not pruned, we may end up inserting PHI nodes
 264    in blocks that have one or more edges with no incoming definition
 265    for O_j.  This would lead to uninitialized warnings for O_j's
 266    symbol.  */
 267 #define TODO_update_ssa                 (1 << 11)
 268
 269 /* Update the SSA form without inserting any new PHI nodes at all.
 270    This is used by passes that have either inserted all the PHI nodes
 271    themselves or passes that need only to patch use-def and def-def
 272    chains for virtuals (e.g., DCE).  */
 273 #define TODO_update_ssa_no_phi          (1 << 12)
 274
 275 /* Insert PHI nodes everywhere they are needed.  No pruning of the
 276    IDF is done.  This is used by passes that need the PHI nodes for
 277    O_j even if it means that some arguments will come from the default
 278    definition of O_j's symbol.
 279
 280    WARNING: If you need to use this flag, chances are that your pass
 281    may be doing something wrong.  Inserting PHI nodes for an old name
 282    where not all edges carry a new replacement may lead to silent
 283    codegen errors or spurious uninitialized warnings.  */
 284 #define TODO_update_ssa_full_phi        (1 << 13)
 285
 286 /* Passes that update the SSA form on their own may want to delegate
 287    the updating of virtual names to the generic updater.  Since FUD
 288    chains are easier to maintain, this simplifies the work they need
 289    to do.  NOTE: If this flag is used, any OLD->NEW mappings for real
 290    names are explicitly destroyed and only the symbols marked for
 291    renaming are processed.  */
 292 #define TODO_update_ssa_only_virtuals   (1 << 14)
 293
 294 /* Some passes leave unused local variables that can be removed from
 295    cfun->local_decls.  This reduces the size of dump files
 296    and the memory footprint for VAR_DECLs.  */
 297 #define TODO_remove_unused_locals       (1 << 15)
 298
 299 /* Call df_finish at the end of the pass.  This is done after all of
 300    the dumpers have been allowed to run so that they have access to
 301    the instance before it is destroyed.  */
 302 #define TODO_df_finish                  (1 << 17)
 303
 304 /* Call df_verify at the end of the pass if checking is enabled.  */
 305 #define TODO_df_verify                  (1 << 18)
 306
 307 /* Internally used for the first instance of a pass.  */
 308 #define TODO_mark_first_instance        (1 << 19)
 309
 310 /* Rebuild aliasing info.  */
 311 #define TODO_rebuild_alias              (1 << 20)
 312
 313 /* Rebuild the addressable-vars bitmap and do register promotion.  */
 314 #define TODO_update_address_taken       (1 << 21)
 315
 316 /* Rebuild the callgraph edges.  */
 317 #define TODO_rebuild_cgraph_edges       (1 << 22)
 318
 319 /* Internally used in execute_function_todo().  */
 320 #define TODO_update_ssa_any             \
 321     (TODO_update_ssa                    \
 322      | TODO_update_ssa_no_phi           \
 323      | TODO_update_ssa_full_phi         \
 324      | TODO_update_ssa_only_virtuals)
 325
 326 #define TODO_verify_all \
 327   (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts)
 328
 329
 330 /* Register pass info. */
 331
 332 enum pass_positioning_ops
 333 {
 334   PASS_POS_INSERT_AFTER,  /* Insert after the reference pass.  */
 335   PASS_POS_INSERT_BEFORE, /* Insert before the reference pass.  */
 336   PASS_POS_REPLACE        /* Replace the reference pass.  */
 337 };
 338
 339 struct register_pass_info
 340 {
 341   struct opt_pass *pass;            /* New pass to register.  */
 342   const char *reference_pass_name;  /* Name of the reference pass for hooking
 343                                        up the new pass.  */
 344   int ref_pass_instance_number;     /* Insert the pass at the specified
 345                                        instance number of the reference pass.
 346                                        Do it for every instance if it is 0.  */
 347   enum pass_positioning_ops pos_op; /* how to insert the new pass.  */
 348 };
 349
 350 extern void tree_lowering_passes (tree decl);
 351
 352 extern struct gimple_opt_pass pass_mudflap_1;
 353 extern struct gimple_opt_pass pass_mudflap_2;
 354 extern struct gimple_opt_pass pass_lower_cf;
 355 extern struct gimple_opt_pass pass_refactor_eh;
 356 extern struct gimple_opt_pass pass_lower_eh;
 357 extern struct gimple_opt_pass pass_lower_eh_dispatch;
 358 extern struct gimple_opt_pass pass_lower_resx;
 359 extern struct gimple_opt_pass pass_build_cfg;
 360 extern struct gimple_opt_pass pass_early_tree_profile;
 361 extern struct gimple_opt_pass pass_referenced_vars;
 362 extern struct gimple_opt_pass pass_cleanup_eh;
 363 extern struct gimple_opt_pass pass_sra;
 364 extern struct gimple_opt_pass pass_sra_early;
 365 extern struct gimple_opt_pass pass_early_ipa_sra;
 366 extern struct gimple_opt_pass pass_tail_recursion;
 367 extern struct gimple_opt_pass pass_tail_calls;
 368 extern struct gimple_opt_pass pass_tree_loop;
 369 extern struct gimple_opt_pass pass_tree_loop_init;
 370 extern struct gimple_opt_pass pass_lim;
 371 extern struct gimple_opt_pass pass_tree_unswitch;
 372 extern struct gimple_opt_pass pass_predcom;
 373 extern struct gimple_opt_pass pass_iv_canon;
 374 extern struct gimple_opt_pass pass_scev_cprop;
 375 extern struct gimple_opt_pass pass_empty_loop;
 376 extern struct gimple_opt_pass pass_record_bounds;
 377 extern struct gimple_opt_pass pass_graphite;
 378 extern struct gimple_opt_pass pass_graphite_transforms;
 379 extern struct gimple_opt_pass pass_if_conversion;
 380 extern struct gimple_opt_pass pass_loop_distribution;
 381 extern struct gimple_opt_pass pass_vectorize;
 382 extern struct gimple_opt_pass pass_slp_vectorize;
 383 extern struct gimple_opt_pass pass_complete_unroll;
 384 extern struct gimple_opt_pass pass_complete_unrolli;
 385 extern struct gimple_opt_pass pass_parallelize_loops;
 386 extern struct gimple_opt_pass pass_loop_prefetch;
 387 extern struct gimple_opt_pass pass_iv_optimize;
 388 extern struct gimple_opt_pass pass_tree_loop_done;
 389 extern struct gimple_opt_pass pass_ch;
 390 extern struct gimple_opt_pass pass_ccp;
 391 extern struct gimple_opt_pass pass_phi_only_cprop;
 392 extern struct gimple_opt_pass pass_build_ssa;
 393 extern struct gimple_opt_pass pass_build_alias;
 394 extern struct gimple_opt_pass pass_build_ealias;
 395 extern struct gimple_opt_pass pass_dominator;
 396 extern struct gimple_opt_pass pass_dce;
 397 extern struct gimple_opt_pass pass_dce_loop;
 398 extern struct gimple_opt_pass pass_cd_dce;
 399 extern struct gimple_opt_pass pass_call_cdce;
 400 extern struct gimple_opt_pass pass_merge_phi;
 401 extern struct gimple_opt_pass pass_split_crit_edges;
 402 extern struct gimple_opt_pass pass_pre;
 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_fold_builtins;
 415 extern struct gimple_opt_pass pass_stdarg;
 416 extern struct gimple_opt_pass pass_early_warn_uninitialized;
 417 extern struct gimple_opt_pass pass_late_warn_uninitialized;
 418 extern struct gimple_opt_pass pass_cse_reciprocals;
 419 extern struct gimple_opt_pass pass_cse_sincos;
 420 extern struct gimple_opt_pass pass_optimize_bswap;
 421 extern struct gimple_opt_pass pass_optimize_widening_mul;
 422 extern struct gimple_opt_pass pass_warn_function_return;
 423 extern struct gimple_opt_pass pass_warn_function_noreturn;
 424 extern struct gimple_opt_pass pass_cselim;
 425 extern struct gimple_opt_pass pass_phiopt;
 426 extern struct gimple_opt_pass pass_forwprop;
 427 extern struct gimple_opt_pass pass_phiprop;
 428 extern struct gimple_opt_pass pass_tree_ifcombine;
 429 extern struct gimple_opt_pass pass_dse;
 430 extern struct gimple_opt_pass pass_nrv;
 431 extern struct gimple_opt_pass pass_rename_ssa_copies;
 432 extern struct gimple_opt_pass pass_rest_of_compilation;
 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_split_functions;
 448 extern struct gimple_opt_pass pass_feedback_split_functions;
 449
 450 /* IPA Passes */
 451 extern struct simple_ipa_opt_pass pass_ipa_lower_emutls;
 452 extern struct simple_ipa_opt_pass pass_ipa_function_and_variable_visibility;
 453 extern struct simple_ipa_opt_pass pass_ipa_tree_profile;
 454
 455 extern struct simple_ipa_opt_pass pass_early_local_passes;
 456
 457 extern struct ipa_opt_pass_d pass_ipa_whole_program_visibility;
 458 extern struct ipa_opt_pass_d pass_ipa_lto_gimple_out;
 459 extern struct simple_ipa_opt_pass pass_ipa_increase_alignment;
 460 extern struct simple_ipa_opt_pass pass_ipa_matrix_reorg;
 461 extern struct ipa_opt_pass_d pass_ipa_inline;
 462 extern struct simple_ipa_opt_pass pass_ipa_free_lang_data;
 463 extern struct ipa_opt_pass_d pass_ipa_cp;
 464 extern struct ipa_opt_pass_d pass_ipa_reference;
 465 extern struct ipa_opt_pass_d pass_ipa_pure_const;
 466 extern struct simple_ipa_opt_pass pass_ipa_type_escape;
 467 extern struct simple_ipa_opt_pass pass_ipa_pta;
 468 extern struct simple_ipa_opt_pass pass_ipa_struct_reorg;
 469 extern struct ipa_opt_pass_d pass_ipa_lto_wpa_fixup;
 470 extern struct ipa_opt_pass_d pass_ipa_lto_finish_out;
 471 extern struct ipa_opt_pass_d pass_ipa_profile;
 472 extern struct ipa_opt_pass_d pass_ipa_cdtor_merge;
 473
 474 extern struct gimple_opt_pass pass_all_optimizations;
 475 extern struct gimple_opt_pass pass_cleanup_cfg_post_optimizing;
 476 extern struct gimple_opt_pass pass_init_datastructures;
 477 extern struct gimple_opt_pass pass_fixup_cfg;
 478
 479 extern struct rtl_opt_pass pass_expand;
 480 extern struct rtl_opt_pass pass_init_function;
 481 extern struct rtl_opt_pass pass_jump;
 482 extern struct rtl_opt_pass pass_rtl_eh;
 483 extern struct rtl_opt_pass pass_initial_value_sets;
 484 extern struct rtl_opt_pass pass_unshare_all_rtl;
 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_jump2;
 489 extern struct rtl_opt_pass pass_lower_subreg;
 490 extern struct rtl_opt_pass pass_cse;
 491 extern struct rtl_opt_pass pass_fast_rtl_dce;
 492 extern struct rtl_opt_pass pass_ud_rtl_dce;
 493 extern struct rtl_opt_pass pass_rtl_dce;
 494 extern struct rtl_opt_pass pass_rtl_dse1;
 495 extern struct rtl_opt_pass pass_rtl_dse2;
 496 extern struct rtl_opt_pass pass_rtl_dse3;
 497 extern struct rtl_opt_pass pass_rtl_cprop;
 498 extern struct rtl_opt_pass pass_rtl_pre;
 499 extern struct rtl_opt_pass pass_rtl_hoist;
 500 extern struct rtl_opt_pass pass_rtl_store_motion;
 501 extern struct rtl_opt_pass pass_cse_after_global_opts;
 502 extern struct rtl_opt_pass pass_rtl_ifcvt;
 503
 504 extern struct rtl_opt_pass pass_into_cfg_layout_mode;
 505 extern struct rtl_opt_pass pass_outof_cfg_layout_mode;
 506
 507 extern struct rtl_opt_pass pass_loop2;
 508 extern struct rtl_opt_pass pass_rtl_loop_init;
 509 extern struct rtl_opt_pass pass_rtl_move_loop_invariants;
 510 extern struct rtl_opt_pass pass_rtl_unswitch;
 511 extern struct rtl_opt_pass pass_rtl_unroll_and_peel_loops;
 512 extern struct rtl_opt_pass pass_rtl_doloop;
 513 extern struct rtl_opt_pass pass_rtl_loop_done;
 514
 515 extern struct rtl_opt_pass pass_web;
 516 extern struct rtl_opt_pass pass_cse2;
 517 extern struct rtl_opt_pass pass_df_initialize_opt;
 518 extern struct rtl_opt_pass pass_df_initialize_no_opt;
 519 extern struct rtl_opt_pass pass_reginfo_init;
 520 extern struct rtl_opt_pass pass_inc_dec;
 521 extern struct rtl_opt_pass pass_stack_ptr_mod;
 522 extern struct rtl_opt_pass pass_initialize_regs;
 523 extern struct rtl_opt_pass pass_combine;
 524 extern struct rtl_opt_pass pass_if_after_combine;
 525 extern struct rtl_opt_pass pass_implicit_zee;
 526 extern struct rtl_opt_pass pass_partition_blocks;
 527 extern struct rtl_opt_pass pass_match_asm_constraints;
 528 extern struct rtl_opt_pass pass_regmove;
 529 extern struct rtl_opt_pass pass_split_all_insns;
 530 extern struct rtl_opt_pass pass_fast_rtl_byte_dce;
 531 extern struct rtl_opt_pass pass_lower_subreg2;
 532 extern struct rtl_opt_pass pass_mode_switching;
 533 extern struct rtl_opt_pass pass_sms;
 534 extern struct rtl_opt_pass pass_sched;
 535 extern struct rtl_opt_pass pass_ira;
 536 extern struct rtl_opt_pass pass_postreload;
 537 extern struct rtl_opt_pass pass_clean_state;
 538 extern struct rtl_opt_pass pass_branch_prob;
 539 extern struct rtl_opt_pass pass_value_profile_transformations;
 540 extern struct rtl_opt_pass pass_postreload_cse;
 541 extern struct rtl_opt_pass pass_gcse2;
 542 extern struct rtl_opt_pass pass_split_after_reload;
 543 extern struct rtl_opt_pass pass_branch_target_load_optimize1;
 544 extern struct rtl_opt_pass pass_thread_prologue_and_epilogue;
 545 extern struct rtl_opt_pass pass_stack_adjustments;
 546 extern struct rtl_opt_pass pass_peephole2;
 547 extern struct rtl_opt_pass pass_if_after_reload;
 548 extern struct rtl_opt_pass pass_regrename;
 549 extern struct rtl_opt_pass pass_cprop_hardreg;
 550 extern struct rtl_opt_pass pass_reorder_blocks;
 551 extern struct rtl_opt_pass pass_branch_target_load_optimize2;
 552 extern struct rtl_opt_pass pass_leaf_regs;
 553 extern struct rtl_opt_pass pass_split_before_sched2;
 554 extern struct rtl_opt_pass pass_compare_elim_after_reload;
 555 extern struct rtl_opt_pass pass_sched2;
 556 extern struct rtl_opt_pass pass_stack_regs;
 557 extern struct rtl_opt_pass pass_stack_regs_run;
 558 extern struct rtl_opt_pass pass_df_finish;
 559 extern struct rtl_opt_pass pass_compute_alignments;
 560 extern struct rtl_opt_pass pass_duplicate_computed_gotos;
 561 extern struct rtl_opt_pass pass_variable_tracking;
 562 extern struct rtl_opt_pass pass_free_cfg;
 563 extern struct rtl_opt_pass pass_machine_reorg;
 564 extern struct rtl_opt_pass pass_cleanup_barriers;
 565 extern struct rtl_opt_pass pass_delay_slots;
 566 extern struct rtl_opt_pass pass_split_for_shorten_branches;
 567 extern struct rtl_opt_pass pass_split_before_regstack;
 568 extern struct rtl_opt_pass pass_convert_to_eh_region_ranges;
 569 extern struct rtl_opt_pass pass_shorten_branches;
 570 extern struct rtl_opt_pass pass_set_nothrow_function_flags;
 571 extern struct rtl_opt_pass pass_final;
 572 extern struct rtl_opt_pass pass_rtl_seqabstr;
 573 extern struct gimple_opt_pass pass_release_ssa_names;
 574 extern struct gimple_opt_pass pass_early_inline;
 575 extern struct gimple_opt_pass pass_inline_parameters;
 576 extern struct gimple_opt_pass pass_all_early_optimizations;
 577 extern struct gimple_opt_pass pass_update_address_taken;
 578 extern struct gimple_opt_pass pass_convert_switch;
 579
 580 /* The root of the compilation pass tree, once constructed.  */
 581 extern struct opt_pass *all_passes, *all_small_ipa_passes, *all_lowering_passes,
 582                        *all_regular_ipa_passes, *all_lto_gen_passes;
 583
 584 /* Define a list of pass lists so that both passes.c and plugins can easily
 585    find all the pass lists.  */
 586 #define GCC_PASS_LISTS \
 587   DEF_PASS_LIST (all_lowering_passes) \
 588   DEF_PASS_LIST (all_small_ipa_passes) \
 589   DEF_PASS_LIST (all_regular_ipa_passes) \
 590   DEF_PASS_LIST (all_lto_gen_passes) \
 591   DEF_PASS_LIST (all_passes)
 592
 593 #define DEF_PASS_LIST(LIST) PASS_LIST_NO_##LIST,
 594 enum
 595 {
 596   GCC_PASS_LISTS
 597   PASS_LIST_NUM
 598 };
 599 #undef DEF_PASS_LIST
 600
 601 /* This is used by plugins, and should also be used in
 602    passes.c:register_pass.  */
 603 extern struct opt_pass **gcc_pass_lists[];
 604
 605 /* Current optimization pass.  */
 606 extern struct opt_pass *current_pass;
 607
 608 extern struct opt_pass * get_pass_for_id (int);
 609 extern bool execute_one_pass (struct opt_pass *);
 610 extern void execute_pass_list (struct opt_pass *);
 611 extern void execute_ipa_pass_list (struct opt_pass *);
 612 extern void execute_ipa_summary_passes (struct ipa_opt_pass_d *);
 613 extern void execute_all_ipa_transforms (void);
 614 extern void execute_all_ipa_stmt_fixups (struct cgraph_node *, gimple *);
 615 extern bool pass_init_dump_file (struct opt_pass *);
 616 extern void pass_fini_dump_file (struct opt_pass *);
 617
 618 extern const char *get_current_pass_name (void);
 619 extern void print_current_pass (FILE *);
 620 extern void debug_pass (void);
 621 extern void ipa_write_summaries (void);
 622 extern void ipa_write_optimization_summaries (struct cgraph_node_set_def *,
 623                                               struct varpool_node_set_def *);
 624 extern void ipa_read_summaries (void);
 625 extern void ipa_read_optimization_summaries (void);
 626 extern void register_one_dump_file (struct opt_pass *);
 627 extern bool function_called_by_processed_nodes_p (void);
 628 extern void register_pass (struct register_pass_info *);
 629
 630 /* Set to true if the pass is called the first time during compilation of the
 631    current function.  Note that using this information in the optimization
 632    passes is considered not to be clean, and it should be avoided if possible.
 633    This flag is currently used to prevent loops from being peeled repeatedly
 634    in jump threading; it will be removed once we preserve loop structures
 635    throughout the compilation -- we will be able to mark the affected loops
 636    directly in jump threading, and avoid peeling them next time.  */
 637 extern bool first_pass_instance;
 638
 639 /* Declare for plugins.  */
 640 extern void do_per_function_toporder (void (*) (void *), void *);
 641
 642 #endif /* GCC_TREE_PASS_H */