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