gcc/tree-pass.h

   1 /* Definitions for describing one tree-ssa optimization pass.
   2    Copyright (C) 2004-2014 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   opt_pass *sub;
 110
 111   /* Next in the list of passes to run, independent of gate predicate.  */
 112   opt_pass *next;
 113
 114   /* Static pass number, used as a fragment of the dump file name.  */
 115   int static_pass_number;
 116
 117   /* When a given dump file is being initialized, this flag is set to
 118      true if the corresponding TDF_graph dump file has also been
 119      initialized.  */
 120   bool graph_dump_initialized;
 121
 122 protected:
 123   gcc::context *m_ctxt;
 124 };
 125
 126 /* Description of GIMPLE pass.  */
 127 class gimple_opt_pass : public opt_pass
 128 {
 129 protected:
 130   gimple_opt_pass (const pass_data& data, gcc::context *ctxt)
 131     : opt_pass (data, ctxt)
 132   {
 133   }
 134 };
 135
 136 /* Description of RTL pass.  */
 137 class rtl_opt_pass : public opt_pass
 138 {
 139 protected:
 140   rtl_opt_pass (const pass_data& data, gcc::context *ctxt)
 141     : opt_pass (data, ctxt)
 142   {
 143   }
 144 };
 145
 146 class varpool_node;
 147 struct cgraph_node;
 148 struct lto_symtab_encoder_d;
 149
 150 /* Description of IPA pass with generate summary, write, execute, read and
 151    transform stages.  */
 152 class ipa_opt_pass_d : public opt_pass
 153 {
 154 public:
 155   /* IPA passes can analyze function body and variable initializers
 156       using this hook and produce summary.  */
 157   void (*generate_summary) (void);
 158
 159   /* This hook is used to serialize IPA summaries on disk.  */
 160   void (*write_summary) (void);
 161
 162   /* This hook is used to deserialize IPA summaries from disk.  */
 163   void (*read_summary) (void);
 164
 165   /* This hook is used to serialize IPA optimization summaries on disk.  */
 166   void (*write_optimization_summary) (void);
 167
 168   /* This hook is used to deserialize IPA summaries from disk.  */
 169   void (*read_optimization_summary) (void);
 170
 171   /* Hook to convert gimple stmt uids into true gimple statements.  The second
 172      parameter is an array of statements indexed by their uid. */
 173   void (*stmt_fixup) (struct cgraph_node *, gimple *);
 174
 175   /* Results of interprocedural propagation of an IPA pass is applied to
 176      function body via this hook.  */
 177   unsigned int function_transform_todo_flags_start;
 178   unsigned int (*function_transform) (struct cgraph_node *);
 179   void (*variable_transform) (varpool_node *);
 180
 181 protected:
 182   ipa_opt_pass_d (const pass_data& data, gcc::context *ctxt,
 183                   void (*generate_summary) (void),
 184                   void (*write_summary) (void),
 185                   void (*read_summary) (void),
 186                   void (*write_optimization_summary) (void),
 187                   void (*read_optimization_summary) (void),
 188                   void (*stmt_fixup) (struct cgraph_node *, gimple *),
 189                   unsigned int function_transform_todo_flags_start,
 190                   unsigned int (*function_transform) (struct cgraph_node *),
 191                   void (*variable_transform) (varpool_node *))
 192     : opt_pass (data, ctxt),
 193       generate_summary (generate_summary),
 194       write_summary (write_summary),
 195       read_summary (read_summary),
 196       write_optimization_summary (write_optimization_summary),
 197       read_optimization_summary (read_optimization_summary),
 198       stmt_fixup (stmt_fixup),
 199       function_transform_todo_flags_start (function_transform_todo_flags_start),
 200       function_transform (function_transform),
 201       variable_transform (variable_transform)
 202   {
 203   }
 204 };
 205
 206 /* Description of simple IPA pass.  Simple IPA passes have just one execute
 207    hook.  */
 208 class simple_ipa_opt_pass : public opt_pass
 209 {
 210 protected:
 211   simple_ipa_opt_pass (const pass_data& data, gcc::context *ctxt)
 212     : opt_pass (data, ctxt)
 213   {
 214   }
 215 };
 216
 217 /* Pass properties.  */
 218 #define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
 219 #define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
 220 #define PROP_gimple_leh         (1 << 2)        /* lowered eh */
 221 #define PROP_cfg                (1 << 3)
 222 #define PROP_ssa                (1 << 5)
 223 #define PROP_no_crit_edges      (1 << 6)
 224 #define PROP_rtl                (1 << 7)
 225 #define PROP_gimple_lomp        (1 << 8)        /* lowered OpenMP directives */
 226 #define PROP_cfglayout          (1 << 9)        /* cfglayout mode on RTL */
 227 #define PROP_gimple_lcx         (1 << 10)       /* lowered complex */
 228 #define PROP_loops              (1 << 11)       /* preserve loop structures */
 229 #define PROP_gimple_lvec        (1 << 12)       /* lowered vector */
 230
 231 #define PROP_trees \
 232   (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp)
 233
 234 /* To-do flags.  */
 235 #define TODO_do_not_ggc_collect         (1 << 1)
 236 #define TODO_verify_ssa                 (1 << 2)
 237 #define TODO_verify_flow                (1 << 3)
 238 #define TODO_verify_stmts               (1 << 4)
 239 #define TODO_cleanup_cfg                (1 << 5)
 240 #define TODO_dump_symtab                (1 << 7)
 241 #define TODO_remove_functions           (1 << 8)
 242 #define TODO_rebuild_frequencies        (1 << 9)
 243 #define TODO_verify_rtl_sharing         (1 << 10)
 244
 245 /* To-do flags for calls to update_ssa.  */
 246
 247 /* Update the SSA form inserting PHI nodes for newly exposed symbols
 248    and virtual names marked for updating.  When updating real names,
 249    only insert PHI nodes for a real name O_j in blocks reached by all
 250    the new and old definitions for O_j.  If the iterated dominance
 251    frontier for O_j is not pruned, we may end up inserting PHI nodes
 252    in blocks that have one or more edges with no incoming definition
 253    for O_j.  This would lead to uninitialized warnings for O_j's
 254    symbol.  */
 255 #define TODO_update_ssa                 (1 << 11)
 256
 257 /* Update the SSA form without inserting any new PHI nodes at all.
 258    This is used by passes that have either inserted all the PHI nodes
 259    themselves or passes that need only to patch use-def and def-def
 260    chains for virtuals (e.g., DCE).  */
 261 #define TODO_update_ssa_no_phi          (1 << 12)
 262
 263 /* Insert PHI nodes everywhere they are needed.  No pruning of the
 264    IDF is done.  This is used by passes that need the PHI nodes for
 265    O_j even if it means that some arguments will come from the default
 266    definition of O_j's symbol.
 267
 268    WARNING: If you need to use this flag, chances are that your pass
 269    may be doing something wrong.  Inserting PHI nodes for an old name
 270    where not all edges carry a new replacement may lead to silent
 271    codegen errors or spurious uninitialized warnings.  */
 272 #define TODO_update_ssa_full_phi        (1 << 13)
 273
 274 /* Passes that update the SSA form on their own may want to delegate
 275    the updating of virtual names to the generic updater.  Since FUD
 276    chains are easier to maintain, this simplifies the work they need
 277    to do.  NOTE: If this flag is used, any OLD->NEW mappings for real
 278    names are explicitly destroyed and only the symbols marked for
 279    renaming are processed.  */
 280 #define TODO_update_ssa_only_virtuals   (1 << 14)
 281
 282 /* Some passes leave unused local variables that can be removed from
 283    cfun->local_decls.  This reduces the size of dump files
 284    and the memory footprint for VAR_DECLs.  */
 285 #define TODO_remove_unused_locals       (1 << 15)
 286
 287 /* Call df_finish at the end of the pass.  This is done after all of
 288    the dumpers have been allowed to run so that they have access to
 289    the instance before it is destroyed.  */
 290 #define TODO_df_finish                  (1 << 17)
 291
 292 /* Call df_verify at the end of the pass if checking is enabled.  */
 293 #define TODO_df_verify                  (1 << 18)
 294
 295 /* Internally used for the first instance of a pass.  */
 296 #define TODO_mark_first_instance        (1 << 19)
 297
 298 /* Rebuild aliasing info.  */
 299 #define TODO_rebuild_alias              (1 << 20)
 300
 301 /* Rebuild the addressable-vars bitmap and do register promotion.  */
 302 #define TODO_update_address_taken       (1 << 21)
 303
 304 /* Rebuild the callgraph edges.  */
 305 #define TODO_rebuild_cgraph_edges       (1 << 22)
 306
 307 /* Internally used in execute_function_todo().  */
 308 #define TODO_update_ssa_any             \
 309     (TODO_update_ssa                    \
 310      | TODO_update_ssa_no_phi           \
 311      | TODO_update_ssa_full_phi         \
 312      | TODO_update_ssa_only_virtuals)
 313
 314 #define TODO_verify_all \
 315   (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts)
 316
 317
 318 /* Register pass info. */
 319
 320 enum pass_positioning_ops
 321 {
 322   PASS_POS_INSERT_AFTER,  /* Insert after the reference pass.  */
 323   PASS_POS_INSERT_BEFORE, /* Insert before the reference pass.  */
 324   PASS_POS_REPLACE        /* Replace the reference pass.  */
 325 };
 326
 327 struct register_pass_info
 328 {
 329   opt_pass *pass;                   /* New pass to register.  */
 330   const char *reference_pass_name;  /* Name of the reference pass for hooking
 331                                        up the new pass.  */
 332   int ref_pass_instance_number;     /* Insert the pass at the specified
 333                                        instance number of the reference pass.
 334                                        Do it for every instance if it is 0.  */
 335   enum pass_positioning_ops pos_op; /* how to insert the new pass.  */
 336 };
 337
 338 /* Registers a new pass.  Either fill out the register_pass_info or specify
 339    the individual parameters.  The pass object is expected to have been
 340    allocated using operator new and the pass manager takes the ownership of
 341    the pass object.  */
 342 extern void register_pass (register_pass_info *);
 343 extern void register_pass (opt_pass* pass, pass_positioning_ops pos,
 344                            const char* ref_pass_name, int ref_pass_inst_number);
 345
 346 extern gimple_opt_pass *make_pass_asan (gcc::context *ctxt);
 347 extern gimple_opt_pass *make_pass_asan_O0 (gcc::context *ctxt);
 348 extern gimple_opt_pass *make_pass_tsan (gcc::context *ctxt);
 349 extern gimple_opt_pass *make_pass_tsan_O0 (gcc::context *ctxt);
 350 extern gimple_opt_pass *make_pass_lower_cf (gcc::context *ctxt);
 351 extern gimple_opt_pass *make_pass_refactor_eh (gcc::context *ctxt);
 352 extern gimple_opt_pass *make_pass_lower_eh (gcc::context *ctxt);
 353 extern gimple_opt_pass *make_pass_lower_eh_dispatch (gcc::context *ctxt);
 354 extern gimple_opt_pass *make_pass_lower_resx (gcc::context *ctxt);
 355 extern gimple_opt_pass *make_pass_build_cfg (gcc::context *ctxt);
 356 extern gimple_opt_pass *make_pass_early_tree_profile (gcc::context *ctxt);
 357 extern gimple_opt_pass *make_pass_cleanup_eh (gcc::context *ctxt);
 358 extern gimple_opt_pass *make_pass_sra (gcc::context *ctxt);
 359 extern gimple_opt_pass *make_pass_sra_early (gcc::context *ctxt);
 360 extern gimple_opt_pass *make_pass_early_ipa_sra (gcc::context *ctxt);
 361 extern gimple_opt_pass *make_pass_tail_recursion (gcc::context *ctxt);
 362 extern gimple_opt_pass *make_pass_tail_calls (gcc::context *ctxt);
 363 extern gimple_opt_pass *make_pass_tree_loop (gcc::context *ctxt);
 364 extern gimple_opt_pass *make_pass_tree_loop_init (gcc::context *ctxt);
 365 extern gimple_opt_pass *make_pass_lim (gcc::context *ctxt);
 366 extern gimple_opt_pass *make_pass_tree_unswitch (gcc::context *ctxt);
 367 extern gimple_opt_pass *make_pass_predcom (gcc::context *ctxt);
 368 extern gimple_opt_pass *make_pass_iv_canon (gcc::context *ctxt);
 369 extern gimple_opt_pass *make_pass_scev_cprop (gcc::context *ctxt);
 370 extern gimple_opt_pass *make_pass_empty_loop (gcc::context *ctxt);
 371 extern gimple_opt_pass *make_pass_record_bounds (gcc::context *ctxt);
 372 extern gimple_opt_pass *make_pass_graphite (gcc::context *ctxt);
 373 extern gimple_opt_pass *make_pass_graphite_transforms (gcc::context *ctxt);
 374 extern gimple_opt_pass *make_pass_if_conversion (gcc::context *ctxt);
 375 extern gimple_opt_pass *make_pass_loop_distribution (gcc::context *ctxt);
 376 extern gimple_opt_pass *make_pass_vectorize (gcc::context *ctxt);
 377 extern gimple_opt_pass *make_pass_slp_vectorize (gcc::context *ctxt);
 378 extern gimple_opt_pass *make_pass_complete_unroll (gcc::context *ctxt);
 379 extern gimple_opt_pass *make_pass_complete_unrolli (gcc::context *ctxt);
 380 extern gimple_opt_pass *make_pass_parallelize_loops (gcc::context *ctxt);
 381 extern gimple_opt_pass *make_pass_loop_prefetch (gcc::context *ctxt);
 382 extern gimple_opt_pass *make_pass_iv_optimize (gcc::context *ctxt);
 383 extern gimple_opt_pass *make_pass_tree_loop_done (gcc::context *ctxt);
 384 extern gimple_opt_pass *make_pass_ch (gcc::context *ctxt);
 385 extern gimple_opt_pass *make_pass_ccp (gcc::context *ctxt);
 386 extern gimple_opt_pass *make_pass_phi_only_cprop (gcc::context *ctxt);
 387 extern gimple_opt_pass *make_pass_build_ssa (gcc::context *ctxt);
 388 extern gimple_opt_pass *make_pass_build_alias (gcc::context *ctxt);
 389 extern gimple_opt_pass *make_pass_build_ealias (gcc::context *ctxt);
 390 extern gimple_opt_pass *make_pass_dominator (gcc::context *ctxt);
 391 extern gimple_opt_pass *make_pass_dce (gcc::context *ctxt);
 392 extern gimple_opt_pass *make_pass_dce_loop (gcc::context *ctxt);
 393 extern gimple_opt_pass *make_pass_cd_dce (gcc::context *ctxt);
 394 extern gimple_opt_pass *make_pass_call_cdce (gcc::context *ctxt);
 395 extern gimple_opt_pass *make_pass_merge_phi (gcc::context *ctxt);
 396 extern gimple_opt_pass *make_pass_split_crit_edges (gcc::context *ctxt);
 397 extern gimple_opt_pass *make_pass_pre (gcc::context *ctxt);
 398 extern unsigned int tail_merge_optimize (unsigned int);
 399 extern gimple_opt_pass *make_pass_profile (gcc::context *ctxt);
 400 extern gimple_opt_pass *make_pass_strip_predict_hints (gcc::context *ctxt);
 401 extern gimple_opt_pass *make_pass_lower_complex_O0 (gcc::context *ctxt);
 402 extern gimple_opt_pass *make_pass_lower_complex (gcc::context *ctxt);
 403 extern gimple_opt_pass *make_pass_lower_vector (gcc::context *ctxt);
 404 extern gimple_opt_pass *make_pass_lower_vector_ssa (gcc::context *ctxt);
 405 extern gimple_opt_pass *make_pass_lower_omp (gcc::context *ctxt);
 406 extern gimple_opt_pass *make_pass_diagnose_omp_blocks (gcc::context *ctxt);
 407 extern gimple_opt_pass *make_pass_expand_omp (gcc::context *ctxt);
 408 extern gimple_opt_pass *make_pass_object_sizes (gcc::context *ctxt);
 409 extern gimple_opt_pass *make_pass_strlen (gcc::context *ctxt);
 410 extern gimple_opt_pass *make_pass_fold_builtins (gcc::context *ctxt);
 411 extern gimple_opt_pass *make_pass_stdarg (gcc::context *ctxt);
 412 extern gimple_opt_pass *make_pass_early_warn_uninitialized (gcc::context *ctxt);
 413 extern gimple_opt_pass *make_pass_late_warn_uninitialized (gcc::context *ctxt);
 414 extern gimple_opt_pass *make_pass_cse_reciprocals (gcc::context *ctxt);
 415 extern gimple_opt_pass *make_pass_cse_sincos (gcc::context *ctxt);
 416 extern gimple_opt_pass *make_pass_optimize_bswap (gcc::context *ctxt);
 417 extern gimple_opt_pass *make_pass_optimize_widening_mul (gcc::context *ctxt);
 418 extern gimple_opt_pass *make_pass_warn_function_return (gcc::context *ctxt);
 419 extern gimple_opt_pass *make_pass_warn_function_noreturn (gcc::context *ctxt);
 420 extern gimple_opt_pass *make_pass_cselim (gcc::context *ctxt);
 421 extern gimple_opt_pass *make_pass_phiopt (gcc::context *ctxt);
 422 extern gimple_opt_pass *make_pass_forwprop (gcc::context *ctxt);
 423 extern gimple_opt_pass *make_pass_phiprop (gcc::context *ctxt);
 424 extern gimple_opt_pass *make_pass_tree_ifcombine (gcc::context *ctxt);
 425 extern gimple_opt_pass *make_pass_dse (gcc::context *ctxt);
 426 extern gimple_opt_pass *make_pass_nrv (gcc::context *ctxt);
 427 extern gimple_opt_pass *make_pass_rename_ssa_copies (gcc::context *ctxt);
 428 extern gimple_opt_pass *make_pass_sink_code (gcc::context *ctxt);
 429 extern gimple_opt_pass *make_pass_fre (gcc::context *ctxt);
 430 extern gimple_opt_pass *make_pass_check_data_deps (gcc::context *ctxt);
 431 extern gimple_opt_pass *make_pass_copy_prop (gcc::context *ctxt);
 432 extern gimple_opt_pass *make_pass_isolate_erroneous_paths (gcc::context *ctxt);
 433 extern gimple_opt_pass *make_pass_vrp (gcc::context *ctxt);
 434 extern gimple_opt_pass *make_pass_uncprop (gcc::context *ctxt);
 435 extern gimple_opt_pass *make_pass_return_slot (gcc::context *ctxt);
 436 extern gimple_opt_pass *make_pass_reassoc (gcc::context *ctxt);
 437 extern gimple_opt_pass *make_pass_rebuild_cgraph_edges (gcc::context *ctxt);
 438 extern gimple_opt_pass *make_pass_remove_cgraph_callee_edges (gcc::context
 439                                                               *ctxt);
 440 extern gimple_opt_pass *make_pass_build_cgraph_edges (gcc::context *ctxt);
 441 extern gimple_opt_pass *make_pass_local_pure_const (gcc::context *ctxt);
 442 extern gimple_opt_pass *make_pass_tracer (gcc::context *ctxt);
 443 extern gimple_opt_pass *make_pass_warn_unused_result (gcc::context *ctxt);
 444 extern gimple_opt_pass *make_pass_diagnose_tm_blocks (gcc::context *ctxt);
 445 extern gimple_opt_pass *make_pass_lower_tm (gcc::context *ctxt);
 446 extern gimple_opt_pass *make_pass_tm_init (gcc::context *ctxt);
 447 extern gimple_opt_pass *make_pass_tm_mark (gcc::context *ctxt);
 448 extern gimple_opt_pass *make_pass_tm_memopt (gcc::context *ctxt);
 449 extern gimple_opt_pass *make_pass_tm_edges (gcc::context *ctxt);
 450 extern gimple_opt_pass *make_pass_split_functions (gcc::context *ctxt);
 451 extern gimple_opt_pass *make_pass_feedback_split_functions (gcc::context *ctxt);
 452 extern gimple_opt_pass *make_pass_strength_reduction (gcc::context *ctxt);
 453 extern gimple_opt_pass *make_pass_vtable_verify (gcc::context *ctxt);
 454 extern gimple_opt_pass *make_pass_ubsan (gcc::context *ctxt);
 455 extern gimple_opt_pass *make_pass_sanopt (gcc::context *ctxt);
 456
 457 /* IPA Passes */
 458 extern simple_ipa_opt_pass *make_pass_ipa_lower_emutls (gcc::context *ctxt);
 459 extern simple_ipa_opt_pass
 460                                                               *make_pass_ipa_function_and_variable_visibility (gcc::context *ctxt);
 461 extern simple_ipa_opt_pass *make_pass_ipa_tree_profile (gcc::context *ctxt);
 462
 463 extern simple_ipa_opt_pass *make_pass_early_local_passes (gcc::context *ctxt);
 464
 465 extern ipa_opt_pass_d *make_pass_ipa_whole_program_visibility (gcc::context
 466                                                                *ctxt);
 467 extern simple_ipa_opt_pass *make_pass_ipa_increase_alignment (gcc::context
 468                                                               *ctxt);
 469 extern ipa_opt_pass_d *make_pass_ipa_inline (gcc::context *ctxt);
 470 extern simple_ipa_opt_pass *make_pass_ipa_free_lang_data (gcc::context *ctxt);
 471 extern simple_ipa_opt_pass *make_pass_ipa_free_inline_summary (gcc::context
 472                                                                *ctxt);
 473 extern ipa_opt_pass_d *make_pass_ipa_cp (gcc::context *ctxt);
 474 extern ipa_opt_pass_d *make_pass_ipa_devirt (gcc::context *ctxt);
 475 extern ipa_opt_pass_d *make_pass_ipa_reference (gcc::context *ctxt);
 476 extern ipa_opt_pass_d *make_pass_ipa_pure_const (gcc::context *ctxt);
 477 extern simple_ipa_opt_pass *make_pass_ipa_pta (gcc::context *ctxt);
 478 extern simple_ipa_opt_pass *make_pass_ipa_tm (gcc::context *ctxt);
 479 extern simple_ipa_opt_pass *make_pass_omp_simd_clone (gcc::context *ctxt);
 480 extern ipa_opt_pass_d *make_pass_ipa_profile (gcc::context *ctxt);
 481 extern ipa_opt_pass_d *make_pass_ipa_cdtor_merge (gcc::context *ctxt);
 482
 483 extern gimple_opt_pass *make_pass_cleanup_cfg_post_optimizing (gcc::context
 484                                                                *ctxt);
 485 extern gimple_opt_pass *make_pass_init_datastructures (gcc::context *ctxt);
 486 extern gimple_opt_pass *make_pass_fixup_cfg (gcc::context *ctxt);
 487
 488 extern rtl_opt_pass *make_pass_expand (gcc::context *ctxt);
 489 extern rtl_opt_pass *make_pass_instantiate_virtual_regs (gcc::context *ctxt);
 490 extern rtl_opt_pass *make_pass_rtl_fwprop (gcc::context *ctxt);
 491 extern rtl_opt_pass *make_pass_rtl_fwprop_addr (gcc::context *ctxt);
 492 extern rtl_opt_pass *make_pass_jump (gcc::context *ctxt);
 493 extern rtl_opt_pass *make_pass_jump2 (gcc::context *ctxt);
 494 extern rtl_opt_pass *make_pass_lower_subreg (gcc::context *ctxt);
 495 extern rtl_opt_pass *make_pass_cse (gcc::context *ctxt);
 496 extern rtl_opt_pass *make_pass_fast_rtl_dce (gcc::context *ctxt);
 497 extern rtl_opt_pass *make_pass_ud_rtl_dce (gcc::context *ctxt);
 498 extern rtl_opt_pass *make_pass_rtl_dce (gcc::context *ctxt);
 499 extern rtl_opt_pass *make_pass_rtl_dse1 (gcc::context *ctxt);
 500 extern rtl_opt_pass *make_pass_rtl_dse2 (gcc::context *ctxt);
 501 extern rtl_opt_pass *make_pass_rtl_dse3 (gcc::context *ctxt);
 502 extern rtl_opt_pass *make_pass_rtl_cprop (gcc::context *ctxt);
 503 extern rtl_opt_pass *make_pass_rtl_pre (gcc::context *ctxt);
 504 extern rtl_opt_pass *make_pass_rtl_hoist (gcc::context *ctxt);
 505 extern rtl_opt_pass *make_pass_rtl_store_motion (gcc::context *ctxt);
 506 extern rtl_opt_pass *make_pass_cse_after_global_opts (gcc::context *ctxt);
 507 extern rtl_opt_pass *make_pass_rtl_ifcvt (gcc::context *ctxt);
 508
 509 extern rtl_opt_pass *make_pass_into_cfg_layout_mode (gcc::context *ctxt);
 510 extern rtl_opt_pass *make_pass_outof_cfg_layout_mode (gcc::context *ctxt);
 511
 512 extern rtl_opt_pass *make_pass_loop2 (gcc::context *ctxt);
 513 extern rtl_opt_pass *make_pass_rtl_loop_init (gcc::context *ctxt);
 514 extern rtl_opt_pass *make_pass_rtl_move_loop_invariants (gcc::context *ctxt);
 515 extern rtl_opt_pass *make_pass_rtl_unswitch (gcc::context *ctxt);
 516 extern rtl_opt_pass *make_pass_rtl_unroll_and_peel_loops (gcc::context *ctxt);
 517 extern rtl_opt_pass *make_pass_rtl_doloop (gcc::context *ctxt);
 518 extern rtl_opt_pass *make_pass_rtl_loop_done (gcc::context *ctxt);
 519
 520 extern rtl_opt_pass *make_pass_web (gcc::context *ctxt);
 521 extern rtl_opt_pass *make_pass_cse2 (gcc::context *ctxt);
 522 extern rtl_opt_pass *make_pass_df_initialize_opt (gcc::context *ctxt);
 523 extern rtl_opt_pass *make_pass_df_initialize_no_opt (gcc::context *ctxt);
 524 extern rtl_opt_pass *make_pass_reginfo_init (gcc::context *ctxt);
 525 extern rtl_opt_pass *make_pass_inc_dec (gcc::context *ctxt);
 526 extern rtl_opt_pass *make_pass_stack_ptr_mod (gcc::context *ctxt);
 527 extern rtl_opt_pass *make_pass_initialize_regs (gcc::context *ctxt);
 528 extern rtl_opt_pass *make_pass_combine (gcc::context *ctxt);
 529 extern rtl_opt_pass *make_pass_if_after_combine (gcc::context *ctxt);
 530 extern rtl_opt_pass *make_pass_ree (gcc::context *ctxt);
 531 extern rtl_opt_pass *make_pass_partition_blocks (gcc::context *ctxt);
 532 extern rtl_opt_pass *make_pass_match_asm_constraints (gcc::context *ctxt);
 533 extern rtl_opt_pass *make_pass_split_all_insns (gcc::context *ctxt);
 534 extern rtl_opt_pass *make_pass_fast_rtl_byte_dce (gcc::context *ctxt);
 535 extern rtl_opt_pass *make_pass_lower_subreg2 (gcc::context *ctxt);
 536 extern rtl_opt_pass *make_pass_mode_switching (gcc::context *ctxt);
 537 extern rtl_opt_pass *make_pass_sms (gcc::context *ctxt);
 538 extern rtl_opt_pass *make_pass_sched (gcc::context *ctxt);
 539 extern rtl_opt_pass *make_pass_live_range_shrinkage (gcc::context *ctxt);
 540 extern rtl_opt_pass *make_pass_ira (gcc::context *ctxt);
 541 extern rtl_opt_pass *make_pass_reload (gcc::context *ctxt);
 542 extern rtl_opt_pass *make_pass_clean_state (gcc::context *ctxt);
 543 extern rtl_opt_pass *make_pass_branch_prob (gcc::context *ctxt);
 544 extern rtl_opt_pass *make_pass_value_profile_transformations (gcc::context
 545                                                               *ctxt);
 546 extern rtl_opt_pass *make_pass_postreload_cse (gcc::context *ctxt);
 547 extern rtl_opt_pass *make_pass_gcse2 (gcc::context *ctxt);
 548 extern rtl_opt_pass *make_pass_split_after_reload (gcc::context *ctxt);
 549 extern rtl_opt_pass *make_pass_branch_target_load_optimize1 (gcc::context
 550                                                              *ctxt);
 551 extern rtl_opt_pass *make_pass_thread_prologue_and_epilogue (gcc::context
 552                                                              *ctxt);
 553 extern rtl_opt_pass *make_pass_stack_adjustments (gcc::context *ctxt);
 554 extern rtl_opt_pass *make_pass_peephole2 (gcc::context *ctxt);
 555 extern rtl_opt_pass *make_pass_if_after_reload (gcc::context *ctxt);
 556 extern rtl_opt_pass *make_pass_regrename (gcc::context *ctxt);
 557 extern rtl_opt_pass *make_pass_cprop_hardreg (gcc::context *ctxt);
 558 extern rtl_opt_pass *make_pass_reorder_blocks (gcc::context *ctxt);
 559 extern rtl_opt_pass *make_pass_branch_target_load_optimize2 (gcc::context
 560                                                              *ctxt);
 561 extern rtl_opt_pass *make_pass_leaf_regs (gcc::context *ctxt);
 562 extern rtl_opt_pass *make_pass_split_before_sched2 (gcc::context *ctxt);
 563 extern rtl_opt_pass *make_pass_compare_elim_after_reload (gcc::context *ctxt);
 564 extern rtl_opt_pass *make_pass_sched2 (gcc::context *ctxt);
 565 extern rtl_opt_pass *make_pass_stack_regs (gcc::context *ctxt);
 566 extern rtl_opt_pass *make_pass_stack_regs_run (gcc::context *ctxt);
 567 extern rtl_opt_pass *make_pass_df_finish (gcc::context *ctxt);
 568 extern rtl_opt_pass *make_pass_compute_alignments (gcc::context *ctxt);
 569 extern rtl_opt_pass *make_pass_duplicate_computed_gotos (gcc::context *ctxt);
 570 extern rtl_opt_pass *make_pass_variable_tracking (gcc::context *ctxt);
 571 extern rtl_opt_pass *make_pass_free_cfg (gcc::context *ctxt);
 572 extern rtl_opt_pass *make_pass_machine_reorg (gcc::context *ctxt);
 573 extern rtl_opt_pass *make_pass_cleanup_barriers (gcc::context *ctxt);
 574 extern rtl_opt_pass *make_pass_delay_slots (gcc::context *ctxt);
 575 extern rtl_opt_pass *make_pass_split_for_shorten_branches (gcc::context *ctxt);
 576 extern rtl_opt_pass *make_pass_split_before_regstack (gcc::context *ctxt);
 577 extern rtl_opt_pass *make_pass_convert_to_eh_region_ranges (gcc::context *ctxt);
 578 extern rtl_opt_pass *make_pass_shorten_branches (gcc::context *ctxt);
 579 extern rtl_opt_pass *make_pass_set_nothrow_function_flags (gcc::context *ctxt);
 580 extern rtl_opt_pass *make_pass_dwarf2_frame (gcc::context *ctxt);
 581 extern rtl_opt_pass *make_pass_final (gcc::context *ctxt);
 582 extern rtl_opt_pass *make_pass_rtl_seqabstr (gcc::context *ctxt);
 583 extern gimple_opt_pass *make_pass_release_ssa_names (gcc::context *ctxt);
 584 extern gimple_opt_pass *make_pass_early_inline (gcc::context *ctxt);
 585 extern gimple_opt_pass *make_pass_inline_parameters (gcc::context *ctxt);
 586 extern gimple_opt_pass *make_pass_update_address_taken (gcc::context *ctxt);
 587 extern gimple_opt_pass *make_pass_convert_switch (gcc::context *ctxt);
 588
 589 /* Current optimization pass.  */
 590 extern opt_pass *current_pass;
 591
 592 extern bool execute_one_pass (opt_pass *);
 593 extern void execute_pass_list (opt_pass *);
 594 extern void execute_ipa_pass_list (opt_pass *);
 595 extern void execute_ipa_summary_passes (ipa_opt_pass_d *);
 596 extern void execute_all_ipa_transforms (void);
 597 extern void execute_all_ipa_stmt_fixups (struct cgraph_node *, gimple *);
 598 extern bool pass_init_dump_file (opt_pass *);
 599 extern void pass_fini_dump_file (opt_pass *);
 600
 601 extern const char *get_current_pass_name (void);
 602 extern void print_current_pass (FILE *);
 603 extern void debug_pass (void);
 604 extern void ipa_write_summaries (void);
 605 extern void ipa_write_optimization_summaries (struct lto_symtab_encoder_d *);
 606 extern void ipa_read_summaries (void);
 607 extern void ipa_read_optimization_summaries (void);
 608 extern void register_one_dump_file (opt_pass *);
 609 extern bool function_called_by_processed_nodes_p (void);
 610
 611 /* Set to true if the pass is called the first time during compilation of the
 612    current function.  Note that using this information in the optimization
 613    passes is considered not to be clean, and it should be avoided if possible.
 614    This flag is currently used to prevent loops from being peeled repeatedly
 615    in jump threading; it will be removed once we preserve loop structures
 616    throughout the compilation -- we will be able to mark the affected loops
 617    directly in jump threading, and avoid peeling them next time.  */
 618 extern bool first_pass_instance;
 619
 620 /* Declare for plugins.  */
 621 extern void do_per_function_toporder (void (*) (void *), void *);
 622
 623 extern void disable_pass (const char *);
 624 extern void enable_pass (const char *);
 625 extern void dump_passes (void);
 626
 627 #endif /* GCC_TREE_PASS_H */