gcc/tree-pass.h

   1 /* Definitions for describing one tree-ssa optimization pass.
   2    Copyright (C) 2004-2013 Free Software Foundation, Inc.
   3    Contributed by Richard Henderson <rth@redhat.com>
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21
  22 #ifndef GCC_TREE_PASS_H
  23 #define GCC_TREE_PASS_H 1
  24
  25 #include "timevar.h"
  26 #include "dumpfile.h"
  27
  28 /* Optimization pass type.  */
  29 enum opt_pass_type
  30 {
  31   GIMPLE_PASS,
  32   RTL_PASS,
  33   SIMPLE_IPA_PASS,
  34   IPA_PASS
  35 };
  36
  37 /* Metadata for a pass, non-varying across all instances of a pass.  */
  38 struct pass_data
  39 {
  40   /* Optimization pass type.  */
  41   enum opt_pass_type type;
  42
  43   /* Terse name of the pass used as a fragment of the dump file
  44      name.  If the name starts with a star, no dump happens. */
  45   const char *name;
  46
  47   /* The -fopt-info optimization group flags as defined in dumpfile.h. */
  48   unsigned int optinfo_flags;
  49
  50   /* If true, this pass has its own implementation of the opt_pass::gate
  51      method.  */
  52   bool has_gate;
  53
  54   /* If true, this pass has its own implementation of the opt_pass::execute
  55      method.  */
  56   bool has_execute;
  57
  58   /* The timevar id associated with this pass.  */
  59   /* ??? Ideally would be dynamically assigned.  */
  60   timevar_id_t tv_id;
  61
  62   /* Sets of properties input and output from this pass.  */
  63   unsigned int properties_required;
  64   unsigned int properties_provided;
  65   unsigned int properties_destroyed;
  66
  67   /* Flags indicating common sets things to do before and after.  */
  68   unsigned int todo_flags_start;
  69   unsigned int todo_flags_finish;
  70 };
  71
  72 namespace gcc
  73 {
  74   class context;
  75 } // namespace gcc
  76
  77 /* An instance of a pass.  This is also "pass_data" to minimize the
  78    changes in existing code.  */
  79 class opt_pass : public pass_data
  80 {
  81 public:
  82   virtual ~opt_pass () { }
  83
  84   /* Create a copy of this pass.
  85
  86      Passes that can have multiple instances must provide their own
  87      implementation of this, to ensure that any sharing of state between
  88      this instance and the copy is "wired up" correctly.
  89
  90      The default implementation prints an error message and aborts.  */
  91   virtual opt_pass *clone ();
  92
  93   /* If has_gate is set, this pass and all sub-passes are executed only if
  94      the function returns true.
  95      The default implementation returns true.  */
  96   virtual bool gate ();
  97
  98   /* This is the code to run.  If has_execute is false, then there should
  99      be sub-passes otherwise this pass does nothing.
 100      The return value contains TODOs to execute in addition to those in
 101      TODO_flags_finish.   */
 102   virtual unsigned int execute ();
 103
 104 protected:
 105   opt_pass (const pass_data&, gcc::context *);
 106
 107 public:
 108   /* A list of sub-passes to run, dependent on gate predicate.  */
 109   struct opt_pass *sub;
 110
 111   /* Next in the list of passes to run, independent of gate predicate.  */
 112   struct opt_pass *next;
 113
 114   /* Static pass number, used as a fragment of the dump file name.  */
 115   int static_pass_number;
 116
 117 protected:
 118   gcc::context *m_ctxt;
 119 };
 120
 121 /* Description of GIMPLE pass.  */
 122 class gimple_opt_pass : public opt_pass
 123 {
 124 protected:
 125   gimple_opt_pass (const pass_data& data, gcc::context *ctxt)
 126     : opt_pass (data, ctxt)
 127   {
 128   }
 129 };
 130
 131 /* Description of RTL pass.  */
 132 class rtl_opt_pass : public opt_pass
 133 {
 134 protected:
 135   rtl_opt_pass (const pass_data& data, gcc::context *ctxt)
 136     : opt_pass (data, ctxt)
 137   {
 138   }
 139 };
 140
 141 struct varpool_node;
 142 struct cgraph_node;
 143 struct lto_symtab_encoder_d;
 144
 145 /* Description of IPA pass with generate summary, write, execute, read and
 146    transform stages.  */
 147 class ipa_opt_pass_d : public opt_pass
 148 {
 149 public:
 150   /* IPA passes can analyze function body and variable initializers
 151       using this hook and produce summary.  */
 152   void (*generate_summary) (void);
 153
 154   /* This hook is used to serialize IPA summaries on disk.  */
 155   void (*write_summary) (void);
 156
 157   /* This hook is used to deserialize IPA summaries from disk.  */
 158   void (*read_summary) (void);
 159
 160   /* This hook is used to serialize IPA optimization summaries on disk.  */
 161   void (*write_optimization_summary) (void);
 162
 163   /* This hook is used to deserialize IPA summaries from disk.  */
 164   void (*read_optimization_summary) (void);
 165
 166   /* Hook to convert gimple stmt uids into true gimple statements.  The second
 167      parameter is an array of statements indexed by their uid. */
 168   void (*stmt_fixup) (struct cgraph_node *, gimple *);
 169
 170   /* Results of interprocedural propagation of an IPA pass is applied to
 171      function body via this hook.  */
 172   unsigned int function_transform_todo_flags_start;
 173   unsigned int (*function_transform) (struct cgraph_node *);
 174   void (*variable_transform) (struct varpool_node *);
 175
 176 protected:
 177   ipa_opt_pass_d (const pass_data& data, gcc::context *ctxt,
 178                   void (*generate_summary) (void),
 179                   void (*write_summary) (void),
 180                   void (*read_summary) (void),
 181                   void (*write_optimization_summary) (void),
 182                   void (*read_optimization_summary) (void),
 183                   void (*stmt_fixup) (struct cgraph_node *, gimple *),
 184                   unsigned int function_transform_todo_flags_start,
 185                   unsigned int (*function_transform) (struct cgraph_node *),
 186                   void (*variable_transform) (struct varpool_node *))
 187     : opt_pass (data, ctxt),
 188       generate_summary (generate_summary),
 189       write_summary (write_summary),
 190       read_summary (read_summary),
 191       write_optimization_summary (write_optimization_summary),
 192       read_optimization_summary (read_optimization_summary),
 193       stmt_fixup (stmt_fixup),
 194       function_transform_todo_flags_start (function_transform_todo_flags_start),
 195       function_transform (function_transform),
 196       variable_transform (variable_transform)
 197   {
 198   }
 199 };
 200
 201 /* Description of simple IPA pass.  Simple IPA passes have just one execute
 202    hook.  */
 203 class simple_ipa_opt_pass : public opt_pass
 204 {
 205 protected:
 206   simple_ipa_opt_pass (const pass_data& data, gcc::context *ctxt)
 207     : opt_pass (data, ctxt)
 208   {
 209   }
 210 };
 211
 212 /* Pass properties.  */
 213 #define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
 214 #define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
 215 #define PROP_gimple_leh         (1 << 2)        /* lowered eh */
 216 #define PROP_cfg                (1 << 3)
 217 #define PROP_ssa                (1 << 5)
 218 #define PROP_no_crit_edges      (1 << 6)
 219 #define PROP_rtl                (1 << 7)
 220 #define PROP_gimple_lomp        (1 << 8)        /* lowered OpenMP directives */
 221 #define PROP_cfglayout          (1 << 9)        /* cfglayout mode on RTL */
 222 #define PROP_gimple_lcx         (1 << 10)       /* lowered complex */
 223 #define PROP_loops              (1 << 11)       /* preserve loop structures */
 224 #define PROP_gimple_lvec        (1 << 12)       /* lowered vector */
 225
 226 #define PROP_trees \
 227   (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp)
 228
 229 /* To-do flags.  */
 230 #define TODO_do_not_ggc_collect         (1 << 1)
 231 #define TODO_verify_ssa                 (1 << 2)
 232 #define TODO_verify_flow                (1 << 3)
 233 #define TODO_verify_stmts               (1 << 4)
 234 #define TODO_cleanup_cfg                (1 << 5)
 235 #define TODO_dump_symtab                (1 << 7)
 236 #define TODO_remove_functions           (1 << 8)
 237 #define TODO_rebuild_frequencies        (1 << 9)
 238 #define TODO_verify_rtl_sharing         (1 << 10)
 239
 240 /* To-do flags for calls to update_ssa.  */
 241
 242 /* Update the SSA form inserting PHI nodes for newly exposed symbols
 243    and virtual names marked for updating.  When updating real names,
 244    only insert PHI nodes for a real name O_j in blocks reached by all
 245    the new and old definitions for O_j.  If the iterated dominance
 246    frontier for O_j is not pruned, we may end up inserting PHI nodes
 247    in blocks that have one or more edges with no incoming definition
 248    for O_j.  This would lead to uninitialized warnings for O_j's
 249    symbol.  */
 250 #define TODO_update_ssa                 (1 << 11)
 251
 252 /* Update the SSA form without inserting any new PHI nodes at all.
 253    This is used by passes that have either inserted all the PHI nodes
 254    themselves or passes that need only to patch use-def and def-def
 255    chains for virtuals (e.g., DCE).  */
 256 #define TODO_update_ssa_no_phi          (1 << 12)
 257
 258 /* Insert PHI nodes everywhere they are needed.  No pruning of the
 259    IDF is done.  This is used by passes that need the PHI nodes for
 260    O_j even if it means that some arguments will come from the default
 261    definition of O_j's symbol.
 262
 263    WARNING: If you need to use this flag, chances are that your pass
 264    may be doing something wrong.  Inserting PHI nodes for an old name
 265    where not all edges carry a new replacement may lead to silent
 266    codegen errors or spurious uninitialized warnings.  */
 267 #define TODO_update_ssa_full_phi        (1 << 13)
 268
 269 /* Passes that update the SSA form on their own may want to delegate
 270    the updating of virtual names to the generic updater.  Since FUD
 271    chains are easier to maintain, this simplifies the work they need
 272    to do.  NOTE: If this flag is used, any OLD->NEW mappings for real
 273    names are explicitly destroyed and only the symbols marked for
 274    renaming are processed.  */
 275 #define TODO_update_ssa_only_virtuals   (1 << 14)
 276
 277 /* Some passes leave unused local variables that can be removed from
 278    cfun->local_decls.  This reduces the size of dump files
 279    and the memory footprint for VAR_DECLs.  */
 280 #define TODO_remove_unused_locals       (1 << 15)
 281
 282 /* Call df_finish at the end of the pass.  This is done after all of
 283    the dumpers have been allowed to run so that they have access to
 284    the instance before it is destroyed.  */
 285 #define TODO_df_finish                  (1 << 17)
 286
 287 /* Call df_verify at the end of the pass if checking is enabled.  */
 288 #define TODO_df_verify                  (1 << 18)
 289
 290 /* Internally used for the first instance of a pass.  */
 291 #define TODO_mark_first_instance        (1 << 19)
 292
 293 /* Rebuild aliasing info.  */
 294 #define TODO_rebuild_alias              (1 << 20)
 295
 296 /* Rebuild the addressable-vars bitmap and do register promotion.  */
 297 #define TODO_update_address_taken       (1 << 21)
 298
 299 /* Rebuild the callgraph edges.  */
 300 #define TODO_rebuild_cgraph_edges       (1 << 22)
 301
 302 /* Internally used in execute_function_todo().  */
 303 #define TODO_update_ssa_any             \
 304     (TODO_update_ssa                    \
 305      | TODO_update_ssa_no_phi           \
 306      | TODO_update_ssa_full_phi         \
 307      | TODO_update_ssa_only_virtuals)
 308
 309 #define TODO_verify_all \
 310   (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts)
 311
 312
 313 /* Register pass info. */
 314
 315 enum pass_positioning_ops
 316 {
 317   PASS_POS_INSERT_AFTER,  /* Insert after the reference pass.  */
 318   PASS_POS_INSERT_BEFORE, /* Insert before the reference pass.  */
 319   PASS_POS_REPLACE        /* Replace the reference pass.  */
 320 };
 321
 322 struct register_pass_info
 323 {
 324   struct opt_pass *pass;            /* New pass to register.  */
 325   const char *reference_pass_name;  /* Name of the reference pass for hooking
 326                                        up the new pass.  */
 327   int ref_pass_instance_number;     /* Insert the pass at the specified
 328                                        instance number of the reference pass.
 329                                        Do it for every instance if it is 0.  */
 330   enum pass_positioning_ops pos_op; /* how to insert the new pass.  */
 331 };
 332
 333 /* Registers a new pass.  Either fill out the register_pass_info or specify
 334    the individual parameters.  The pass object is expected to have been
 335    allocated using operator new and the pass manager takes the ownership of
 336    the pass object.  */
 337 extern void register_pass (register_pass_info *);
 338 extern void register_pass (opt_pass* pass, pass_positioning_ops pos,
 339                            const char* ref_pass_name, int ref_pass_inst_number);
 340
 341 extern gimple_opt_pass *make_pass_asan (gcc::context *ctxt);
 342 extern gimple_opt_pass *make_pass_asan_O0 (gcc::context *ctxt);
 343 extern gimple_opt_pass *make_pass_tsan (gcc::context *ctxt);
 344 extern gimple_opt_pass *make_pass_tsan_O0 (gcc::context *ctxt);
 345 extern gimple_opt_pass *make_pass_lower_cf (gcc::context *ctxt);
 346 extern gimple_opt_pass *make_pass_refactor_eh (gcc::context *ctxt);
 347 extern gimple_opt_pass *make_pass_lower_eh (gcc::context *ctxt);
 348 extern gimple_opt_pass *make_pass_lower_eh_dispatch (gcc::context *ctxt);
 349 extern gimple_opt_pass *make_pass_lower_resx (gcc::context *ctxt);
 350 extern gimple_opt_pass *make_pass_build_cfg (gcc::context *ctxt);
 351 extern gimple_opt_pass *make_pass_early_tree_profile (gcc::context *ctxt);
 352 extern gimple_opt_pass *make_pass_cleanup_eh (gcc::context *ctxt);
 353 extern gimple_opt_pass *make_pass_sra (gcc::context *ctxt);
 354 extern gimple_opt_pass *make_pass_sra_early (gcc::context *ctxt);
 355 extern gimple_opt_pass *make_pass_early_ipa_sra (gcc::context *ctxt);
 356 extern gimple_opt_pass *make_pass_tail_recursion (gcc::context *ctxt);
 357 extern gimple_opt_pass *make_pass_tail_calls (gcc::context *ctxt);
 358 extern gimple_opt_pass *make_pass_tree_loop (gcc::context *ctxt);
 359 extern gimple_opt_pass *make_pass_tree_loop_init (gcc::context *ctxt);
 360 extern gimple_opt_pass *make_pass_lim (gcc::context *ctxt);
 361 extern gimple_opt_pass *make_pass_tree_unswitch (gcc::context *ctxt);
 362 extern gimple_opt_pass *make_pass_predcom (gcc::context *ctxt);
 363 extern gimple_opt_pass *make_pass_iv_canon (gcc::context *ctxt);
 364 extern gimple_opt_pass *make_pass_scev_cprop (gcc::context *ctxt);
 365 extern gimple_opt_pass *make_pass_empty_loop (gcc::context *ctxt);
 366 extern gimple_opt_pass *make_pass_record_bounds (gcc::context *ctxt);
 367 extern gimple_opt_pass *make_pass_graphite (gcc::context *ctxt);
 368 extern gimple_opt_pass *make_pass_graphite_transforms (gcc::context *ctxt);
 369 extern gimple_opt_pass *make_pass_if_conversion (gcc::context *ctxt);
 370 extern gimple_opt_pass *make_pass_loop_distribution (gcc::context *ctxt);
 371 extern gimple_opt_pass *make_pass_vectorize (gcc::context *ctxt);
 372 extern gimple_opt_pass *make_pass_slp_vectorize (gcc::context *ctxt);
 373 extern gimple_opt_pass *make_pass_complete_unroll (gcc::context *ctxt);
 374 extern gimple_opt_pass *make_pass_complete_unrolli (gcc::context *ctxt);
 375 extern gimple_opt_pass *make_pass_parallelize_loops (gcc::context *ctxt);
 376 extern gimple_opt_pass *make_pass_loop_prefetch (gcc::context *ctxt);
 377 extern gimple_opt_pass *make_pass_iv_optimize (gcc::context *ctxt);
 378 extern gimple_opt_pass *make_pass_tree_loop_done (gcc::context *ctxt);
 379 extern gimple_opt_pass *make_pass_ch (gcc::context *ctxt);
 380 extern gimple_opt_pass *make_pass_ccp (gcc::context *ctxt);
 381 extern gimple_opt_pass *make_pass_phi_only_cprop (gcc::context *ctxt);
 382 extern gimple_opt_pass *make_pass_build_ssa (gcc::context *ctxt);
 383 extern gimple_opt_pass *make_pass_build_alias (gcc::context *ctxt);
 384 extern gimple_opt_pass *make_pass_build_ealias (gcc::context *ctxt);
 385 extern gimple_opt_pass *make_pass_dominator (gcc::context *ctxt);
 386 extern gimple_opt_pass *make_pass_dce (gcc::context *ctxt);
 387 extern gimple_opt_pass *make_pass_dce_loop (gcc::context *ctxt);
 388 extern gimple_opt_pass *make_pass_cd_dce (gcc::context *ctxt);
 389 extern gimple_opt_pass *make_pass_call_cdce (gcc::context *ctxt);
 390 extern gimple_opt_pass *make_pass_merge_phi (gcc::context *ctxt);
 391 extern gimple_opt_pass *make_pass_split_crit_edges (gcc::context *ctxt);
 392 extern gimple_opt_pass *make_pass_pre (gcc::context *ctxt);
 393 extern unsigned int tail_merge_optimize (unsigned int);
 394 extern gimple_opt_pass *make_pass_profile (gcc::context *ctxt);
 395 extern gimple_opt_pass *make_pass_strip_predict_hints (gcc::context *ctxt);
 396 extern gimple_opt_pass *make_pass_lower_complex_O0 (gcc::context *ctxt);
 397 extern gimple_opt_pass *make_pass_lower_complex (gcc::context *ctxt);
 398 extern gimple_opt_pass *make_pass_lower_vector (gcc::context *ctxt);
 399 extern gimple_opt_pass *make_pass_lower_vector_ssa (gcc::context *ctxt);
 400 extern gimple_opt_pass *make_pass_lower_omp (gcc::context *ctxt);
 401 extern gimple_opt_pass *make_pass_diagnose_omp_blocks (gcc::context *ctxt);
 402 extern gimple_opt_pass *make_pass_expand_omp (gcc::context *ctxt);
 403 extern gimple_opt_pass *make_pass_expand_omp_ssa (gcc::context *ctxt);
 404 extern gimple_opt_pass *make_pass_object_sizes (gcc::context *ctxt);
 405 extern gimple_opt_pass *make_pass_strlen (gcc::context *ctxt);
 406 extern gimple_opt_pass *make_pass_fold_builtins (gcc::context *ctxt);
 407 extern gimple_opt_pass *make_pass_stdarg (gcc::context *ctxt);
 408 extern gimple_opt_pass *make_pass_early_warn_uninitialized (gcc::context *ctxt);
 409 extern gimple_opt_pass *make_pass_late_warn_uninitialized (gcc::context *ctxt);
 410 extern gimple_opt_pass *make_pass_cse_reciprocals (gcc::context *ctxt);
 411 extern gimple_opt_pass *make_pass_cse_sincos (gcc::context *ctxt);
 412 extern gimple_opt_pass *make_pass_optimize_bswap (gcc::context *ctxt);
 413 extern gimple_opt_pass *make_pass_optimize_widening_mul (gcc::context *ctxt);
 414 extern gimple_opt_pass *make_pass_warn_function_return (gcc::context *ctxt);
 415 extern gimple_opt_pass *make_pass_warn_function_noreturn (gcc::context *ctxt);
 416 extern gimple_opt_pass *make_pass_cselim (gcc::context *ctxt);
 417 extern gimple_opt_pass *make_pass_phiopt (gcc::context *ctxt);
 418 extern gimple_opt_pass *make_pass_forwprop (gcc::context *ctxt);
 419 extern gimple_opt_pass *make_pass_phiprop (gcc::context *ctxt);
 420 extern gimple_opt_pass *make_pass_tree_ifcombine (gcc::context *ctxt);
 421 extern gimple_opt_pass *make_pass_dse (gcc::context *ctxt);
 422 extern gimple_opt_pass *make_pass_nrv (gcc::context *ctxt);
 423 extern gimple_opt_pass *make_pass_rename_ssa_copies (gcc::context *ctxt);
 424 extern gimple_opt_pass *make_pass_sink_code (gcc::context *ctxt);
 425 extern gimple_opt_pass *make_pass_fre (gcc::context *ctxt);
 426 extern gimple_opt_pass *make_pass_check_data_deps (gcc::context *ctxt);
 427 extern gimple_opt_pass *make_pass_copy_prop (gcc::context *ctxt);
 428 extern gimple_opt_pass *make_pass_isolate_erroneous_paths (gcc::context *ctxt);
 429 extern gimple_opt_pass *make_pass_vrp (gcc::context *ctxt);
 430 extern gimple_opt_pass *make_pass_uncprop (gcc::context *ctxt);
 431 extern gimple_opt_pass *make_pass_return_slot (gcc::context *ctxt);
 432 extern gimple_opt_pass *make_pass_reassoc (gcc::context *ctxt);
 433 extern gimple_opt_pass *make_pass_rebuild_cgraph_edges (gcc::context *ctxt);
 434 extern gimple_opt_pass *make_pass_remove_cgraph_callee_edges (gcc::context
 435                                                               *ctxt);
 436 extern gimple_opt_pass *make_pass_build_cgraph_edges (gcc::context *ctxt);
 437 extern gimple_opt_pass *make_pass_local_pure_const (gcc::context *ctxt);
 438 extern gimple_opt_pass *make_pass_tracer (gcc::context *ctxt);
 439 extern gimple_opt_pass *make_pass_warn_unused_result (gcc::context *ctxt);
 440 extern gimple_opt_pass *make_pass_diagnose_tm_blocks (gcc::context *ctxt);
 441 extern gimple_opt_pass *make_pass_lower_tm (gcc::context *ctxt);
 442 extern gimple_opt_pass *make_pass_tm_init (gcc::context *ctxt);
 443 extern gimple_opt_pass *make_pass_tm_mark (gcc::context *ctxt);
 444 extern gimple_opt_pass *make_pass_tm_memopt (gcc::context *ctxt);
 445 extern gimple_opt_pass *make_pass_tm_edges (gcc::context *ctxt);
 446 extern gimple_opt_pass *make_pass_split_functions (gcc::context *ctxt);
 447 extern gimple_opt_pass *make_pass_feedback_split_functions (gcc::context *ctxt);
 448 extern gimple_opt_pass *make_pass_strength_reduction (gcc::context *ctxt);
 449 extern gimple_opt_pass *make_pass_vtable_verify (gcc::context *ctxt);
 450
 451 /* IPA Passes */
 452 extern simple_ipa_opt_pass *make_pass_ipa_lower_emutls (gcc::context *ctxt);
 453 extern simple_ipa_opt_pass
 454                                                               *make_pass_ipa_function_and_variable_visibility (gcc::context *ctxt);
 455 extern simple_ipa_opt_pass *make_pass_ipa_tree_profile (gcc::context *ctxt);
 456
 457 extern simple_ipa_opt_pass *make_pass_early_local_passes (gcc::context *ctxt);
 458
 459 extern ipa_opt_pass_d *make_pass_ipa_whole_program_visibility (gcc::context
 460                                                                *ctxt);
 461 extern ipa_opt_pass_d *make_pass_ipa_lto_gimple_out (gcc::context *ctxt);
 462 extern simple_ipa_opt_pass *make_pass_ipa_increase_alignment (gcc::context
 463                                                               *ctxt);
 464 extern ipa_opt_pass_d *make_pass_ipa_inline (gcc::context *ctxt);
 465 extern simple_ipa_opt_pass *make_pass_ipa_free_lang_data (gcc::context *ctxt);
 466 extern simple_ipa_opt_pass *make_pass_ipa_free_inline_summary (gcc::context
 467                                                                *ctxt);
 468 extern ipa_opt_pass_d *make_pass_ipa_cp (gcc::context *ctxt);
 469 extern ipa_opt_pass_d *make_pass_ipa_devirt (gcc::context *ctxt);
 470 extern ipa_opt_pass_d *make_pass_ipa_reference (gcc::context *ctxt);
 471 extern ipa_opt_pass_d *make_pass_ipa_pure_const (gcc::context *ctxt);
 472 extern simple_ipa_opt_pass *make_pass_ipa_pta (gcc::context *ctxt);
 473 extern ipa_opt_pass_d *make_pass_ipa_lto_finish_out (gcc::context *ctxt);
 474 extern simple_ipa_opt_pass *make_pass_ipa_tm (gcc::context *ctxt);
 475 extern ipa_opt_pass_d *make_pass_ipa_profile (gcc::context *ctxt);
 476 extern ipa_opt_pass_d *make_pass_ipa_cdtor_merge (gcc::context *ctxt);
 477
 478 extern gimple_opt_pass *make_pass_cleanup_cfg_post_optimizing (gcc::context
 479                                                                *ctxt);
 480 extern gimple_opt_pass *make_pass_init_datastructures (gcc::context *ctxt);
 481 extern gimple_opt_pass *make_pass_fixup_cfg (gcc::context *ctxt);
 482
 483 extern rtl_opt_pass *make_pass_expand (gcc::context *ctxt);
 484 extern rtl_opt_pass *make_pass_instantiate_virtual_regs (gcc::context *ctxt);
 485 extern rtl_opt_pass *make_pass_rtl_fwprop (gcc::context *ctxt);
 486 extern rtl_opt_pass *make_pass_rtl_fwprop_addr (gcc::context *ctxt);
 487 extern rtl_opt_pass *make_pass_jump (gcc::context *ctxt);
 488 extern rtl_opt_pass *make_pass_jump2 (gcc::context *ctxt);
 489 extern rtl_opt_pass *make_pass_lower_subreg (gcc::context *ctxt);
 490 extern rtl_opt_pass *make_pass_cse (gcc::context *ctxt);
 491 extern rtl_opt_pass *make_pass_fast_rtl_dce (gcc::context *ctxt);
 492 extern rtl_opt_pass *make_pass_ud_rtl_dce (gcc::context *ctxt);
 493 extern rtl_opt_pass *make_pass_rtl_dce (gcc::context *ctxt);
 494 extern rtl_opt_pass *make_pass_rtl_dse1 (gcc::context *ctxt);
 495 extern rtl_opt_pass *make_pass_rtl_dse2 (gcc::context *ctxt);
 496 extern rtl_opt_pass *make_pass_rtl_dse3 (gcc::context *ctxt);
 497 extern rtl_opt_pass *make_pass_rtl_cprop (gcc::context *ctxt);
 498 extern rtl_opt_pass *make_pass_rtl_pre (gcc::context *ctxt);
 499 extern rtl_opt_pass *make_pass_rtl_hoist (gcc::context *ctxt);
 500 extern rtl_opt_pass *make_pass_rtl_store_motion (gcc::context *ctxt);
 501 extern rtl_opt_pass *make_pass_cse_after_global_opts (gcc::context *ctxt);
 502 extern rtl_opt_pass *make_pass_rtl_ifcvt (gcc::context *ctxt);
 503
 504 extern rtl_opt_pass *make_pass_into_cfg_layout_mode (gcc::context *ctxt);
 505 extern rtl_opt_pass *make_pass_outof_cfg_layout_mode (gcc::context *ctxt);
 506
 507 extern rtl_opt_pass *make_pass_loop2 (gcc::context *ctxt);
 508 extern rtl_opt_pass *make_pass_rtl_loop_init (gcc::context *ctxt);
 509 extern rtl_opt_pass *make_pass_rtl_move_loop_invariants (gcc::context *ctxt);
 510 extern rtl_opt_pass *make_pass_rtl_unswitch (gcc::context *ctxt);
 511 extern rtl_opt_pass *make_pass_rtl_unroll_and_peel_loops (gcc::context *ctxt);
 512 extern rtl_opt_pass *make_pass_rtl_doloop (gcc::context *ctxt);
 513 extern rtl_opt_pass *make_pass_rtl_loop_done (gcc::context *ctxt);
 514
 515 extern rtl_opt_pass *make_pass_web (gcc::context *ctxt);
 516 extern rtl_opt_pass *make_pass_cse2 (gcc::context *ctxt);
 517 extern rtl_opt_pass *make_pass_df_initialize_opt (gcc::context *ctxt);
 518 extern rtl_opt_pass *make_pass_df_initialize_no_opt (gcc::context *ctxt);
 519 extern rtl_opt_pass *make_pass_reginfo_init (gcc::context *ctxt);
 520 extern rtl_opt_pass *make_pass_inc_dec (gcc::context *ctxt);
 521 extern rtl_opt_pass *make_pass_stack_ptr_mod (gcc::context *ctxt);
 522 extern rtl_opt_pass *make_pass_initialize_regs (gcc::context *ctxt);
 523 extern rtl_opt_pass *make_pass_combine (gcc::context *ctxt);
 524 extern rtl_opt_pass *make_pass_if_after_combine (gcc::context *ctxt);
 525 extern rtl_opt_pass *make_pass_ree (gcc::context *ctxt);
 526 extern rtl_opt_pass *make_pass_partition_blocks (gcc::context *ctxt);
 527 extern rtl_opt_pass *make_pass_match_asm_constraints (gcc::context *ctxt);
 528 extern rtl_opt_pass *make_pass_split_all_insns (gcc::context *ctxt);
 529 extern rtl_opt_pass *make_pass_fast_rtl_byte_dce (gcc::context *ctxt);
 530 extern rtl_opt_pass *make_pass_lower_subreg2 (gcc::context *ctxt);
 531 extern rtl_opt_pass *make_pass_mode_switching (gcc::context *ctxt);
 532 extern rtl_opt_pass *make_pass_sms (gcc::context *ctxt);
 533 extern rtl_opt_pass *make_pass_sched (gcc::context *ctxt);
 534 extern rtl_opt_pass *make_pass_live_range_shrinkage (gcc::context *ctxt);
 535 extern rtl_opt_pass *make_pass_ira (gcc::context *ctxt);
 536 extern rtl_opt_pass *make_pass_reload (gcc::context *ctxt);
 537 extern rtl_opt_pass *make_pass_clean_state (gcc::context *ctxt);
 538 extern rtl_opt_pass *make_pass_branch_prob (gcc::context *ctxt);
 539 extern rtl_opt_pass *make_pass_value_profile_transformations (gcc::context
 540                                                               *ctxt);
 541 extern rtl_opt_pass *make_pass_postreload_cse (gcc::context *ctxt);
 542 extern rtl_opt_pass *make_pass_gcse2 (gcc::context *ctxt);
 543 extern rtl_opt_pass *make_pass_split_after_reload (gcc::context *ctxt);
 544 extern rtl_opt_pass *make_pass_branch_target_load_optimize1 (gcc::context
 545                                                              *ctxt);
 546 extern rtl_opt_pass *make_pass_thread_prologue_and_epilogue (gcc::context
 547                                                              *ctxt);
 548 extern rtl_opt_pass *make_pass_stack_adjustments (gcc::context *ctxt);
 549 extern rtl_opt_pass *make_pass_peephole2 (gcc::context *ctxt);
 550 extern rtl_opt_pass *make_pass_if_after_reload (gcc::context *ctxt);
 551 extern rtl_opt_pass *make_pass_regrename (gcc::context *ctxt);
 552 extern rtl_opt_pass *make_pass_cprop_hardreg (gcc::context *ctxt);
 553 extern rtl_opt_pass *make_pass_reorder_blocks (gcc::context *ctxt);
 554 extern rtl_opt_pass *make_pass_branch_target_load_optimize2 (gcc::context
 555                                                              *ctxt);
 556 extern rtl_opt_pass *make_pass_leaf_regs (gcc::context *ctxt);
 557 extern rtl_opt_pass *make_pass_split_before_sched2 (gcc::context *ctxt);
 558 extern rtl_opt_pass *make_pass_compare_elim_after_reload (gcc::context *ctxt);
 559 extern rtl_opt_pass *make_pass_sched2 (gcc::context *ctxt);
 560 extern rtl_opt_pass *make_pass_stack_regs (gcc::context *ctxt);
 561 extern rtl_opt_pass *make_pass_stack_regs_run (gcc::context *ctxt);
 562 extern rtl_opt_pass *make_pass_df_finish (gcc::context *ctxt);
 563 extern rtl_opt_pass *make_pass_compute_alignments (gcc::context *ctxt);
 564 extern rtl_opt_pass *make_pass_duplicate_computed_gotos (gcc::context *ctxt);
 565 extern rtl_opt_pass *make_pass_variable_tracking (gcc::context *ctxt);
 566 extern rtl_opt_pass *make_pass_free_cfg (gcc::context *ctxt);
 567 extern rtl_opt_pass *make_pass_machine_reorg (gcc::context *ctxt);
 568 extern rtl_opt_pass *make_pass_cleanup_barriers (gcc::context *ctxt);
 569 extern rtl_opt_pass *make_pass_delay_slots (gcc::context *ctxt);
 570 extern rtl_opt_pass *make_pass_split_for_shorten_branches (gcc::context *ctxt);
 571 extern rtl_opt_pass *make_pass_split_before_regstack (gcc::context *ctxt);
 572 extern rtl_opt_pass *make_pass_convert_to_eh_region_ranges (gcc::context *ctxt);
 573 extern rtl_opt_pass *make_pass_shorten_branches (gcc::context *ctxt);
 574 extern rtl_opt_pass *make_pass_set_nothrow_function_flags (gcc::context *ctxt);
 575 extern rtl_opt_pass *make_pass_dwarf2_frame (gcc::context *ctxt);
 576 extern rtl_opt_pass *make_pass_final (gcc::context *ctxt);
 577 extern rtl_opt_pass *make_pass_rtl_seqabstr (gcc::context *ctxt);
 578 extern gimple_opt_pass *make_pass_release_ssa_names (gcc::context *ctxt);
 579 extern gimple_opt_pass *make_pass_early_inline (gcc::context *ctxt);
 580 extern gimple_opt_pass *make_pass_inline_parameters (gcc::context *ctxt);
 581 extern gimple_opt_pass *make_pass_update_address_taken (gcc::context *ctxt);
 582 extern gimple_opt_pass *make_pass_convert_switch (gcc::context *ctxt);
 583
 584 /* Current optimization pass.  */
 585 extern struct opt_pass *current_pass;
 586
 587 extern bool execute_one_pass (struct opt_pass *);
 588 extern void execute_pass_list (struct opt_pass *);
 589 extern void execute_ipa_pass_list (struct opt_pass *);
 590 extern void execute_ipa_summary_passes (struct ipa_opt_pass_d *);
 591 extern void execute_all_ipa_transforms (void);
 592 extern void execute_all_ipa_stmt_fixups (struct cgraph_node *, gimple *);
 593 extern bool pass_init_dump_file (struct opt_pass *);
 594 extern void pass_fini_dump_file (struct opt_pass *);
 595
 596 extern const char *get_current_pass_name (void);
 597 extern void print_current_pass (FILE *);
 598 extern void debug_pass (void);
 599 extern void ipa_write_summaries (void);
 600 extern void ipa_write_optimization_summaries (struct lto_symtab_encoder_d *);
 601 extern void ipa_read_summaries (void);
 602 extern void ipa_read_optimization_summaries (void);
 603 extern void register_one_dump_file (struct opt_pass *);
 604 extern bool function_called_by_processed_nodes_p (void);
 605
 606 /* Set to true if the pass is called the first time during compilation of the
 607    current function.  Note that using this information in the optimization
 608    passes is considered not to be clean, and it should be avoided if possible.
 609    This flag is currently used to prevent loops from being peeled repeatedly
 610    in jump threading; it will be removed once we preserve loop structures
 611    throughout the compilation -- we will be able to mark the affected loops
 612    directly in jump threading, and avoid peeling them next time.  */
 613 extern bool first_pass_instance;
 614
 615 /* Declare for plugins.  */
 616 extern void do_per_function_toporder (void (*) (void *), void *);
 617
 618 extern void disable_pass (const char *);
 619 extern void enable_pass (const char *);
 620 extern void dump_passes (void);
 621
 622 #endif /* GCC_TREE_PASS_H */