gcc/tree-pass.h

   1 /* Definitions for describing one tree-ssa optimization pass.
   2    Copyright (C) 2004-2021 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   optgroup_flags_t 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   virtual void set_pass_param (unsigned int, bool);
  87
  88   /* This pass and all sub-passes are executed only if the function returns
  89      true.  The default implementation returns true.  */
  90   virtual bool gate (function *fun);
  91
  92   /* This is the code to run.  If this is not overridden, then there should
  93      be sub-passes otherwise this pass does nothing.
  94      The return value contains TODOs to execute in addition to those in
  95      TODO_flags_finish.   */
  96   virtual unsigned int execute (function *fun);
  97
  98 protected:
  99   opt_pass (const pass_data&, gcc::context *);
 100
 101 public:
 102   /* A list of sub-passes to run, dependent on gate predicate.  */
 103   opt_pass *sub;
 104
 105   /* Next in the list of passes to run, independent of gate predicate.  */
 106   opt_pass *next;
 107
 108   /* Static pass number, used as a fragment of the dump file name.  */
 109   int static_pass_number;
 110
 111 protected:
 112   gcc::context *m_ctxt;
 113 };
 114
 115 /* Description of GIMPLE pass.  */
 116 class gimple_opt_pass : public opt_pass
 117 {
 118 protected:
 119   gimple_opt_pass (const pass_data& data, gcc::context *ctxt)
 120     : opt_pass (data, ctxt)
 121   {
 122   }
 123 };
 124
 125 /* Description of RTL pass.  */
 126 class rtl_opt_pass : public opt_pass
 127 {
 128 protected:
 129   rtl_opt_pass (const pass_data& data, gcc::context *ctxt)
 130     : opt_pass (data, ctxt)
 131   {
 132   }
 133 };
 134
 135 struct varpool_node;
 136 struct cgraph_node;
 137 struct lto_symtab_encoder_d;
 138
 139 /* Description of IPA pass with generate summary, write, execute, read and
 140    transform stages.  */
 141 class ipa_opt_pass_d : public opt_pass
 142 {
 143 public:
 144   /* IPA passes can analyze function body and variable initializers
 145       using this hook and produce summary.  */
 146   void (*generate_summary) (void);
 147
 148   /* This hook is used to serialize IPA summaries on disk.  */
 149   void (*write_summary) (void);
 150
 151   /* This hook is used to deserialize IPA summaries from disk.  */
 152   void (*read_summary) (void);
 153
 154   /* This hook is used to serialize IPA optimization summaries on disk.  */
 155   void (*write_optimization_summary) (void);
 156
 157   /* This hook is used to deserialize IPA summaries from disk.  */
 158   void (*read_optimization_summary) (void);
 159
 160   /* Hook to convert gimple stmt uids into true gimple statements.  The second
 161      parameter is an array of statements indexed by their uid. */
 162   void (*stmt_fixup) (struct cgraph_node *, gimple **);
 163
 164   /* Results of interprocedural propagation of an IPA pass is applied to
 165      function body via this hook.  */
 166   unsigned int function_transform_todo_flags_start;
 167   unsigned int (*function_transform) (struct cgraph_node *);
 168   void (*variable_transform) (varpool_node *);
 169
 170 protected:
 171   ipa_opt_pass_d (const pass_data& data, gcc::context *ctxt,
 172                   void (*generate_summary) (void),
 173                   void (*write_summary) (void),
 174                   void (*read_summary) (void),
 175                   void (*write_optimization_summary) (void),
 176                   void (*read_optimization_summary) (void),
 177                   void (*stmt_fixup) (struct cgraph_node *, gimple **),
 178                   unsigned int function_transform_todo_flags_start,
 179                   unsigned int (*function_transform) (struct cgraph_node *),
 180                   void (*variable_transform) (varpool_node *))
 181     : opt_pass (data, ctxt),
 182       generate_summary (generate_summary),
 183       write_summary (write_summary),
 184       read_summary (read_summary),
 185       write_optimization_summary (write_optimization_summary),
 186       read_optimization_summary (read_optimization_summary),
 187       stmt_fixup (stmt_fixup),
 188       function_transform_todo_flags_start (function_transform_todo_flags_start),
 189       function_transform (function_transform),
 190       variable_transform (variable_transform)
 191   {
 192   }
 193 };
 194
 195 /* Description of simple IPA pass.  Simple IPA passes have just one execute
 196    hook.  */
 197 class simple_ipa_opt_pass : public opt_pass
 198 {
 199 protected:
 200   simple_ipa_opt_pass (const pass_data& data, gcc::context *ctxt)
 201     : opt_pass (data, ctxt)
 202   {
 203   }
 204 };
 205
 206 /* Pass properties.  */
 207 #define PROP_gimple_any         (1 << 0)        /* entire gimple grammar */
 208 #define PROP_gimple_lcf         (1 << 1)        /* lowered control flow */
 209 #define PROP_gimple_leh         (1 << 2)        /* lowered eh */
 210 #define PROP_cfg                (1 << 3)
 211 #define PROP_objsz              (1 << 4)        /* object sizes computed */
 212 #define PROP_ssa                (1 << 5)
 213 #define PROP_no_crit_edges      (1 << 6)
 214 #define PROP_rtl                (1 << 7)
 215 #define PROP_gimple_lomp        (1 << 8)        /* lowered OpenMP directives */
 216 #define PROP_cfglayout          (1 << 9)        /* cfglayout mode on RTL */
 217 #define PROP_gimple_lcx         (1 << 10)       /* lowered complex */
 218 #define PROP_loops              (1 << 11)       /* preserve loop structures */
 219 #define PROP_gimple_lvec        (1 << 12)       /* lowered vector */
 220 #define PROP_gimple_eomp        (1 << 13)       /* no OpenMP directives */
 221 #define PROP_gimple_lva         (1 << 14)       /* No va_arg internal function.  */
 222 #define PROP_gimple_opt_math    (1 << 15)       /* Disable canonicalization
 223                                                    of math functions; the
 224                                                    current choices have
 225                                                    been optimized.  */
 226 #define PROP_gimple_lomp_dev    (1 << 16)       /* done omp_device_lower */
 227 #define PROP_rtl_split_insns    (1 << 17)       /* RTL has insns split.  */
 228
 229 #define PROP_gimple \
 230   (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp)
 231
 232 /* To-do flags.  */
 233 #define TODO_do_not_ggc_collect         (1 << 1)
 234 #define TODO_cleanup_cfg                (1 << 5)
 235 #define TODO_verify_il                  (1 << 6)
 236 #define TODO_dump_symtab                (1 << 7)
 237 #define TODO_remove_functions           (1 << 8)
 238 #define TODO_rebuild_frequencies        (1 << 9)
 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 /* Release function body and stop pass manager.  */
 303 #define TODO_discard_function           (1 << 23)
 304
 305 /* Internally used in execute_function_todo().  */
 306 #define TODO_update_ssa_any             \
 307     (TODO_update_ssa                    \
 308      | TODO_update_ssa_no_phi           \
 309      | TODO_update_ssa_full_phi         \
 310      | TODO_update_ssa_only_virtuals)
 311
 312 #define TODO_verify_all TODO_verify_il
 313
 314 /* To-do flags for pending_TODOs.  */
 315
 316 /* Tell the next scalar cleanup pass that there is
 317    work for it to do.  */
 318 #define PENDING_TODO_force_next_scalar_cleanup  (1 << 1)
 319
 320 /* Register pass info. */
 321
 322 enum pass_positioning_ops
 323 {
 324   PASS_POS_INSERT_AFTER,  /* Insert after the reference pass.  */
 325   PASS_POS_INSERT_BEFORE, /* Insert before the reference pass.  */
 326   PASS_POS_REPLACE        /* Replace the reference pass.  */
 327 };
 328
 329 struct register_pass_info
 330 {
 331   opt_pass *pass;                   /* New pass to register.  */
 332   const char *reference_pass_name;  /* Name of the reference pass for hooking
 333                                        up the new pass.  */
 334   int ref_pass_instance_number;     /* Insert the pass at the specified
 335                                        instance number of the reference pass.
 336                                        Do it for every instance if it is 0.  */
 337   enum pass_positioning_ops pos_op; /* how to insert the new pass.  */
 338 };
 339
 340 /* Registers a new pass.  Either fill out the register_pass_info or specify
 341    the individual parameters.  The pass object is expected to have been
 342    allocated using operator new and the pass manager takes the ownership of
 343    the pass object.  */
 344 extern void register_pass (register_pass_info *);
 345 extern void register_pass (opt_pass* pass, pass_positioning_ops pos,
 346                            const char* ref_pass_name, int ref_pass_inst_number);
 347
 348 extern gimple_opt_pass *make_pass_asan (gcc::context *ctxt);
 349 extern gimple_opt_pass *make_pass_asan_O0 (gcc::context *ctxt);
 350 extern gimple_opt_pass *make_pass_tsan (gcc::context *ctxt);
 351 extern gimple_opt_pass *make_pass_tsan_O0 (gcc::context *ctxt);
 352 extern gimple_opt_pass *make_pass_sancov (gcc::context *ctxt);
 353 extern gimple_opt_pass *make_pass_sancov_O0 (gcc::context *ctxt);
 354 extern gimple_opt_pass *make_pass_lower_cf (gcc::context *ctxt);
 355 extern gimple_opt_pass *make_pass_refactor_eh (gcc::context *ctxt);
 356 extern gimple_opt_pass *make_pass_lower_eh (gcc::context *ctxt);
 357 extern gimple_opt_pass *make_pass_lower_eh_dispatch (gcc::context *ctxt);
 358 extern gimple_opt_pass *make_pass_lower_resx (gcc::context *ctxt);
 359 extern gimple_opt_pass *make_pass_build_cfg (gcc::context *ctxt);
 360 extern gimple_opt_pass *make_pass_early_tree_profile (gcc::context *ctxt);
 361 extern gimple_opt_pass *make_pass_cleanup_eh (gcc::context *ctxt);
 362 extern gimple_opt_pass *make_pass_sra (gcc::context *ctxt);
 363 extern gimple_opt_pass *make_pass_sra_early (gcc::context *ctxt);
 364 extern gimple_opt_pass *make_pass_tail_recursion (gcc::context *ctxt);
 365 extern gimple_opt_pass *make_pass_tail_calls (gcc::context *ctxt);
 366 extern gimple_opt_pass *make_pass_fix_loops (gcc::context *ctxt);
 367 extern gimple_opt_pass *make_pass_tree_loop (gcc::context *ctxt);
 368 extern gimple_opt_pass *make_pass_tree_no_loop (gcc::context *ctxt);
 369 extern gimple_opt_pass *make_pass_tree_loop_init (gcc::context *ctxt);
 370 extern gimple_opt_pass *make_pass_loop_versioning (gcc::context *ctxt);
 371 extern gimple_opt_pass *make_pass_lim (gcc::context *ctxt);
 372 extern gimple_opt_pass *make_pass_linterchange (gcc::context *ctxt);
 373 extern gimple_opt_pass *make_pass_tree_unswitch (gcc::context *ctxt);
 374 extern gimple_opt_pass *make_pass_loop_split (gcc::context *ctxt);
 375 extern gimple_opt_pass *make_pass_loop_jam (gcc::context *ctxt);
 376 extern gimple_opt_pass *make_pass_predcom (gcc::context *ctxt);
 377 extern gimple_opt_pass *make_pass_iv_canon (gcc::context *ctxt);
 378 extern gimple_opt_pass *make_pass_scev_cprop (gcc::context *ctxt);
 379 extern gimple_opt_pass *make_pass_empty_loop (gcc::context *ctxt);
 380 extern gimple_opt_pass *make_pass_graphite (gcc::context *ctxt);
 381 extern gimple_opt_pass *make_pass_graphite_transforms (gcc::context *ctxt);
 382 extern gimple_opt_pass *make_pass_if_conversion (gcc::context *ctxt);
 383 extern gimple_opt_pass *make_pass_if_to_switch (gcc::context *ctxt);
 384 extern gimple_opt_pass *make_pass_loop_distribution (gcc::context *ctxt);
 385 extern gimple_opt_pass *make_pass_vectorize (gcc::context *ctxt);
 386 extern gimple_opt_pass *make_pass_simduid_cleanup (gcc::context *ctxt);
 387 extern gimple_opt_pass *make_pass_slp_vectorize (gcc::context *ctxt);
 388 extern gimple_opt_pass *make_pass_complete_unroll (gcc::context *ctxt);
 389 extern gimple_opt_pass *make_pass_complete_unrolli (gcc::context *ctxt);
 390 extern gimple_opt_pass *make_pass_pre_slp_scalar_cleanup (gcc::context *ctxt);
 391 extern gimple_opt_pass *make_pass_parallelize_loops (gcc::context *ctxt);
 392 extern gimple_opt_pass *make_pass_loop_prefetch (gcc::context *ctxt);
 393 extern gimple_opt_pass *make_pass_iv_optimize (gcc::context *ctxt);
 394 extern gimple_opt_pass *make_pass_tree_loop_done (gcc::context *ctxt);
 395 extern gimple_opt_pass *make_pass_ch (gcc::context *ctxt);
 396 extern gimple_opt_pass *make_pass_ch_vect (gcc::context *ctxt);
 397 extern gimple_opt_pass *make_pass_ccp (gcc::context *ctxt);
 398 extern gimple_opt_pass *make_pass_split_paths (gcc::context *ctxt);
 399 extern gimple_opt_pass *make_pass_build_ssa (gcc::context *ctxt);
 400 extern gimple_opt_pass *make_pass_build_alias (gcc::context *ctxt);
 401 extern gimple_opt_pass *make_pass_build_ealias (gcc::context *ctxt);
 402 extern gimple_opt_pass *make_pass_dominator (gcc::context *ctxt);
 403 extern gimple_opt_pass *make_pass_dce (gcc::context *ctxt);
 404 extern gimple_opt_pass *make_pass_cd_dce (gcc::context *ctxt);
 405 extern gimple_opt_pass *make_pass_call_cdce (gcc::context *ctxt);
 406 extern gimple_opt_pass *make_pass_merge_phi (gcc::context *ctxt);
 407 extern gimple_opt_pass *make_pass_thread_jumps (gcc::context *ctxt);
 408 extern gimple_opt_pass *make_pass_early_thread_jumps (gcc::context *ctxt);
 409 extern gimple_opt_pass *make_pass_split_crit_edges (gcc::context *ctxt);
 410 extern gimple_opt_pass *make_pass_laddress (gcc::context *ctxt);
 411 extern gimple_opt_pass *make_pass_pre (gcc::context *ctxt);
 412 extern unsigned int tail_merge_optimize (unsigned int);
 413 extern gimple_opt_pass *make_pass_profile (gcc::context *ctxt);
 414 extern gimple_opt_pass *make_pass_strip_predict_hints (gcc::context *ctxt);
 415 extern gimple_opt_pass *make_pass_lower_complex_O0 (gcc::context *ctxt);
 416 extern gimple_opt_pass *make_pass_lower_complex (gcc::context *ctxt);
 417 extern gimple_opt_pass *make_pass_lower_switch (gcc::context *ctxt);
 418 extern gimple_opt_pass *make_pass_lower_switch_O0 (gcc::context *ctxt);
 419 extern gimple_opt_pass *make_pass_lower_vector (gcc::context *ctxt);
 420 extern gimple_opt_pass *make_pass_lower_vector_ssa (gcc::context *ctxt);
 421 extern gimple_opt_pass *make_pass_omp_oacc_kernels_decompose (gcc::context *ctxt);
 422 extern gimple_opt_pass *make_pass_lower_omp (gcc::context *ctxt);
 423 extern gimple_opt_pass *make_pass_diagnose_omp_blocks (gcc::context *ctxt);
 424 extern gimple_opt_pass *make_pass_expand_omp (gcc::context *ctxt);
 425 extern gimple_opt_pass *make_pass_expand_omp_ssa (gcc::context *ctxt);
 426 extern gimple_opt_pass *make_pass_omp_target_link (gcc::context *ctxt);
 427 extern gimple_opt_pass *make_pass_oacc_loop_designation (gcc::context *ctxt);
 428 extern gimple_opt_pass *make_pass_oacc_device_lower (gcc::context *ctxt);
 429 extern gimple_opt_pass *make_pass_omp_device_lower (gcc::context *ctxt);
 430 extern gimple_opt_pass *make_pass_object_sizes (gcc::context *ctxt);
 431 extern gimple_opt_pass *make_pass_early_object_sizes (gcc::context *ctxt);
 432 extern gimple_opt_pass *make_pass_warn_access (gcc::context *ctxt);
 433 extern gimple_opt_pass *make_pass_warn_printf (gcc::context *ctxt);
 434 extern gimple_opt_pass *make_pass_strlen (gcc::context *ctxt);
 435 extern gimple_opt_pass *make_pass_fold_builtins (gcc::context *ctxt);
 436 extern gimple_opt_pass *make_pass_post_ipa_warn (gcc::context *ctxt);
 437 extern gimple_opt_pass *make_pass_stdarg (gcc::context *ctxt);
 438 extern gimple_opt_pass *make_pass_early_warn_uninitialized (gcc::context *ctxt);
 439 extern gimple_opt_pass *make_pass_late_warn_uninitialized (gcc::context *ctxt);
 440 extern gimple_opt_pass *make_pass_cse_reciprocals (gcc::context *ctxt);
 441 extern gimple_opt_pass *make_pass_cse_sincos (gcc::context *ctxt);
 442 extern gimple_opt_pass *make_pass_optimize_bswap (gcc::context *ctxt);
 443 extern gimple_opt_pass *make_pass_store_merging (gcc::context *ctxt);
 444 extern gimple_opt_pass *make_pass_optimize_widening_mul (gcc::context *ctxt);
 445 extern gimple_opt_pass *make_pass_warn_function_return (gcc::context *ctxt);
 446 extern gimple_opt_pass *make_pass_warn_function_noreturn (gcc::context *ctxt);
 447 extern gimple_opt_pass *make_pass_cselim (gcc::context *ctxt);
 448 extern gimple_opt_pass *make_pass_phiopt (gcc::context *ctxt);
 449 extern gimple_opt_pass *make_pass_forwprop (gcc::context *ctxt);
 450 extern gimple_opt_pass *make_pass_phiprop (gcc::context *ctxt);
 451 extern gimple_opt_pass *make_pass_tree_ifcombine (gcc::context *ctxt);
 452 extern gimple_opt_pass *make_pass_dse (gcc::context *ctxt);
 453 extern gimple_opt_pass *make_pass_nrv (gcc::context *ctxt);
 454 extern gimple_opt_pass *make_pass_rename_ssa_copies (gcc::context *ctxt);
 455 extern gimple_opt_pass *make_pass_sink_code (gcc::context *ctxt);
 456 extern gimple_opt_pass *make_pass_fre (gcc::context *ctxt);
 457 extern gimple_opt_pass *make_pass_check_data_deps (gcc::context *ctxt);
 458 extern gimple_opt_pass *make_pass_copy_prop (gcc::context *ctxt);
 459 extern gimple_opt_pass *make_pass_isolate_erroneous_paths (gcc::context *ctxt);
 460 extern gimple_opt_pass *make_pass_early_vrp (gcc::context *ctxt);
 461 extern gimple_opt_pass *make_pass_vrp (gcc::context *ctxt);
 462 extern gimple_opt_pass *make_pass_uncprop (gcc::context *ctxt);
 463 extern gimple_opt_pass *make_pass_return_slot (gcc::context *ctxt);
 464 extern gimple_opt_pass *make_pass_reassoc (gcc::context *ctxt);
 465 extern gimple_opt_pass *make_pass_rebuild_cgraph_edges (gcc::context *ctxt);
 466 extern gimple_opt_pass *make_pass_remove_cgraph_callee_edges (gcc::context
 467                                                               *ctxt);
 468 extern gimple_opt_pass *make_pass_build_cgraph_edges (gcc::context *ctxt);
 469 extern gimple_opt_pass *make_pass_local_pure_const (gcc::context *ctxt);
 470 extern gimple_opt_pass *make_pass_nothrow (gcc::context *ctxt);
 471 extern gimple_opt_pass *make_pass_tracer (gcc::context *ctxt);
 472 extern gimple_opt_pass *make_pass_warn_restrict (gcc::context *ctxt);
 473 extern gimple_opt_pass *make_pass_warn_unused_result (gcc::context *ctxt);
 474 extern gimple_opt_pass *make_pass_diagnose_tm_blocks (gcc::context *ctxt);
 475 extern gimple_opt_pass *make_pass_lower_tm (gcc::context *ctxt);
 476 extern gimple_opt_pass *make_pass_tm_init (gcc::context *ctxt);
 477 extern gimple_opt_pass *make_pass_tm_mark (gcc::context *ctxt);
 478 extern gimple_opt_pass *make_pass_tm_memopt (gcc::context *ctxt);
 479 extern gimple_opt_pass *make_pass_tm_edges (gcc::context *ctxt);
 480 extern gimple_opt_pass *make_pass_split_functions (gcc::context *ctxt);
 481 extern gimple_opt_pass *make_pass_feedback_split_functions (gcc::context *ctxt);
 482 extern gimple_opt_pass *make_pass_strength_reduction (gcc::context *ctxt);
 483 extern gimple_opt_pass *make_pass_vtable_verify (gcc::context *ctxt);
 484 extern gimple_opt_pass *make_pass_ubsan (gcc::context *ctxt);
 485 extern gimple_opt_pass *make_pass_sanopt (gcc::context *ctxt);
 486 extern gimple_opt_pass *make_pass_oacc_kernels (gcc::context *ctxt);
 487 extern simple_ipa_opt_pass *make_pass_ipa_oacc (gcc::context *ctxt);
 488 extern simple_ipa_opt_pass *make_pass_ipa_oacc_kernels (gcc::context *ctxt);
 489 extern gimple_opt_pass *make_pass_warn_nonnull_compare (gcc::context *ctxt);
 490 extern gimple_opt_pass *make_pass_sprintf_length (gcc::context *ctxt);
 491 extern gimple_opt_pass *make_pass_walloca (gcc::context *ctxt);
 492 extern gimple_opt_pass *make_pass_modref (gcc::context *ctxt);
 493 extern gimple_opt_pass *make_pass_coroutine_lower_builtins (gcc::context *ctxt);
 494 extern gimple_opt_pass *make_pass_coroutine_early_expand_ifns (gcc::context *ctxt);
 495 extern gimple_opt_pass *make_pass_adjust_alignment (gcc::context *ctxt);
 496
 497 /* IPA Passes */
 498 extern simple_ipa_opt_pass *make_pass_ipa_lower_emutls (gcc::context *ctxt);
 499 extern simple_ipa_opt_pass
 500                                                               *make_pass_ipa_function_and_variable_visibility (gcc::context *ctxt);
 501 extern simple_ipa_opt_pass *make_pass_ipa_tree_profile (gcc::context *ctxt);
 502 extern simple_ipa_opt_pass *make_pass_ipa_auto_profile (gcc::context *ctxt);
 503
 504 extern simple_ipa_opt_pass *make_pass_build_ssa_passes (gcc::context *ctxt);
 505 extern simple_ipa_opt_pass *make_pass_local_optimization_passes (gcc::context *ctxt);
 506 extern simple_ipa_opt_pass *make_pass_ipa_remove_symbols (gcc::context *ctxt);
 507
 508 extern ipa_opt_pass_d *make_pass_analyzer (gcc::context *ctxt);
 509 extern ipa_opt_pass_d *make_pass_ipa_whole_program_visibility (gcc::context
 510                                                                *ctxt);
 511 extern simple_ipa_opt_pass *make_pass_ipa_increase_alignment (gcc::context
 512                                                               *ctxt);
 513 extern ipa_opt_pass_d *make_pass_ipa_fn_summary (gcc::context *ctxt);
 514 extern ipa_opt_pass_d *make_pass_ipa_inline (gcc::context *ctxt);
 515 extern simple_ipa_opt_pass *make_pass_ipa_free_lang_data (gcc::context *ctxt);
 516 extern simple_ipa_opt_pass *make_pass_ipa_free_fn_summary (gcc::context *ctxt);
 517 extern ipa_opt_pass_d *make_pass_ipa_cp (gcc::context *ctxt);
 518 extern ipa_opt_pass_d *make_pass_ipa_sra (gcc::context *ctxt);
 519 extern ipa_opt_pass_d *make_pass_ipa_icf (gcc::context *ctxt);
 520 extern ipa_opt_pass_d *make_pass_ipa_devirt (gcc::context *ctxt);
 521 extern ipa_opt_pass_d *make_pass_ipa_odr (gcc::context *ctxt);
 522 extern ipa_opt_pass_d *make_pass_ipa_reference (gcc::context *ctxt);
 523 extern ipa_opt_pass_d *make_pass_ipa_pure_const (gcc::context *ctxt);
 524 extern simple_ipa_opt_pass *make_pass_ipa_pta (gcc::context *ctxt);
 525 extern simple_ipa_opt_pass *make_pass_ipa_tm (gcc::context *ctxt);
 526 extern simple_ipa_opt_pass *make_pass_target_clone (gcc::context *ctxt);
 527 extern simple_ipa_opt_pass *make_pass_dispatcher_calls (gcc::context *ctxt);
 528 extern simple_ipa_opt_pass *make_pass_omp_simd_clone (gcc::context *ctxt);
 529 extern ipa_opt_pass_d *make_pass_ipa_profile (gcc::context *ctxt);
 530 extern ipa_opt_pass_d *make_pass_ipa_cdtor_merge (gcc::context *ctxt);
 531 extern ipa_opt_pass_d *make_pass_ipa_single_use (gcc::context *ctxt);
 532 extern ipa_opt_pass_d *make_pass_ipa_comdats (gcc::context *ctxt);
 533 extern ipa_opt_pass_d *make_pass_ipa_modref (gcc::context *ctxt);
 534
 535 extern gimple_opt_pass *make_pass_cleanup_cfg_post_optimizing (gcc::context
 536                                                                *ctxt);
 537 extern gimple_opt_pass *make_pass_fixup_cfg (gcc::context *ctxt);
 538 extern gimple_opt_pass *make_pass_backprop (gcc::context *ctxt);
 539
 540 extern rtl_opt_pass *make_pass_expand (gcc::context *ctxt);
 541 extern rtl_opt_pass *make_pass_instantiate_virtual_regs (gcc::context *ctxt);
 542 extern rtl_opt_pass *make_pass_rtl_fwprop (gcc::context *ctxt);
 543 extern rtl_opt_pass *make_pass_rtl_fwprop_addr (gcc::context *ctxt);
 544 extern rtl_opt_pass *make_pass_jump (gcc::context *ctxt);
 545 extern rtl_opt_pass *make_pass_jump2 (gcc::context *ctxt);
 546 extern rtl_opt_pass *make_pass_lower_subreg (gcc::context *ctxt);
 547 extern rtl_opt_pass *make_pass_cse (gcc::context *ctxt);
 548 extern rtl_opt_pass *make_pass_fast_rtl_dce (gcc::context *ctxt);
 549 extern rtl_opt_pass *make_pass_ud_rtl_dce (gcc::context *ctxt);
 550 extern rtl_opt_pass *make_pass_rtl_dce (gcc::context *ctxt);
 551 extern rtl_opt_pass *make_pass_rtl_dse1 (gcc::context *ctxt);
 552 extern rtl_opt_pass *make_pass_rtl_dse2 (gcc::context *ctxt);
 553 extern rtl_opt_pass *make_pass_rtl_dse3 (gcc::context *ctxt);
 554 extern rtl_opt_pass *make_pass_rtl_cprop (gcc::context *ctxt);
 555 extern rtl_opt_pass *make_pass_rtl_pre (gcc::context *ctxt);
 556 extern rtl_opt_pass *make_pass_rtl_hoist (gcc::context *ctxt);
 557 extern rtl_opt_pass *make_pass_rtl_store_motion (gcc::context *ctxt);
 558 extern rtl_opt_pass *make_pass_cse_after_global_opts (gcc::context *ctxt);
 559 extern rtl_opt_pass *make_pass_rtl_ifcvt (gcc::context *ctxt);
 560
 561 extern rtl_opt_pass *make_pass_into_cfg_layout_mode (gcc::context *ctxt);
 562 extern rtl_opt_pass *make_pass_outof_cfg_layout_mode (gcc::context *ctxt);
 563
 564 extern rtl_opt_pass *make_pass_loop2 (gcc::context *ctxt);
 565 extern rtl_opt_pass *make_pass_rtl_loop_init (gcc::context *ctxt);
 566 extern rtl_opt_pass *make_pass_rtl_move_loop_invariants (gcc::context *ctxt);
 567 extern rtl_opt_pass *make_pass_rtl_unroll_loops (gcc::context *ctxt);
 568 extern rtl_opt_pass *make_pass_rtl_doloop (gcc::context *ctxt);
 569 extern rtl_opt_pass *make_pass_rtl_loop_done (gcc::context *ctxt);
 570
 571 extern rtl_opt_pass *make_pass_lower_subreg2 (gcc::context *ctxt);
 572 extern rtl_opt_pass *make_pass_web (gcc::context *ctxt);
 573 extern rtl_opt_pass *make_pass_cse2 (gcc::context *ctxt);
 574 extern rtl_opt_pass *make_pass_df_initialize_opt (gcc::context *ctxt);
 575 extern rtl_opt_pass *make_pass_df_initialize_no_opt (gcc::context *ctxt);
 576 extern rtl_opt_pass *make_pass_reginfo_init (gcc::context *ctxt);
 577 extern rtl_opt_pass *make_pass_inc_dec (gcc::context *ctxt);
 578 extern rtl_opt_pass *make_pass_stack_ptr_mod (gcc::context *ctxt);
 579 extern rtl_opt_pass *make_pass_initialize_regs (gcc::context *ctxt);
 580 extern rtl_opt_pass *make_pass_combine (gcc::context *ctxt);
 581 extern rtl_opt_pass *make_pass_if_after_combine (gcc::context *ctxt);
 582 extern rtl_opt_pass *make_pass_jump_after_combine (gcc::context *ctxt);
 583 extern rtl_opt_pass *make_pass_ree (gcc::context *ctxt);
 584 extern rtl_opt_pass *make_pass_partition_blocks (gcc::context *ctxt);
 585 extern rtl_opt_pass *make_pass_match_asm_constraints (gcc::context *ctxt);
 586 extern rtl_opt_pass *make_pass_split_all_insns (gcc::context *ctxt);
 587 extern rtl_opt_pass *make_pass_fast_rtl_byte_dce (gcc::context *ctxt);
 588 extern rtl_opt_pass *make_pass_lower_subreg3 (gcc::context *ctxt);
 589 extern rtl_opt_pass *make_pass_mode_switching (gcc::context *ctxt);
 590 extern rtl_opt_pass *make_pass_sms (gcc::context *ctxt);
 591 extern rtl_opt_pass *make_pass_sched (gcc::context *ctxt);
 592 extern rtl_opt_pass *make_pass_live_range_shrinkage (gcc::context *ctxt);
 593 extern rtl_opt_pass *make_pass_early_remat (gcc::context *ctxt);
 594 extern rtl_opt_pass *make_pass_ira (gcc::context *ctxt);
 595 extern rtl_opt_pass *make_pass_reload (gcc::context *ctxt);
 596 extern rtl_opt_pass *make_pass_clean_state (gcc::context *ctxt);
 597 extern rtl_opt_pass *make_pass_branch_prob (gcc::context *ctxt);
 598 extern rtl_opt_pass *make_pass_value_profile_transformations (gcc::context
 599                                                               *ctxt);
 600 extern rtl_opt_pass *make_pass_postreload_cse (gcc::context *ctxt);
 601 extern rtl_opt_pass *make_pass_gcse2 (gcc::context *ctxt);
 602 extern rtl_opt_pass *make_pass_split_after_reload (gcc::context *ctxt);
 603 extern rtl_opt_pass *make_pass_thread_prologue_and_epilogue (gcc::context
 604                                                              *ctxt);
 605 extern rtl_opt_pass *make_pass_zero_call_used_regs (gcc::context *ctxt);
 606 extern rtl_opt_pass *make_pass_stack_adjustments (gcc::context *ctxt);
 607 extern rtl_opt_pass *make_pass_sched_fusion (gcc::context *ctxt);
 608 extern rtl_opt_pass *make_pass_peephole2 (gcc::context *ctxt);
 609 extern rtl_opt_pass *make_pass_if_after_reload (gcc::context *ctxt);
 610 extern rtl_opt_pass *make_pass_regrename (gcc::context *ctxt);
 611 extern rtl_opt_pass *make_pass_cprop_hardreg (gcc::context *ctxt);
 612 extern rtl_opt_pass *make_pass_reorder_blocks (gcc::context *ctxt);
 613 extern rtl_opt_pass *make_pass_leaf_regs (gcc::context *ctxt);
 614 extern rtl_opt_pass *make_pass_split_before_sched2 (gcc::context *ctxt);
 615 extern rtl_opt_pass *make_pass_compare_elim_after_reload (gcc::context *ctxt);
 616 extern rtl_opt_pass *make_pass_sched2 (gcc::context *ctxt);
 617 extern rtl_opt_pass *make_pass_stack_regs (gcc::context *ctxt);
 618 extern rtl_opt_pass *make_pass_stack_regs_run (gcc::context *ctxt);
 619 extern rtl_opt_pass *make_pass_df_finish (gcc::context *ctxt);
 620 extern rtl_opt_pass *make_pass_compute_alignments (gcc::context *ctxt);
 621 extern rtl_opt_pass *make_pass_duplicate_computed_gotos (gcc::context *ctxt);
 622 extern rtl_opt_pass *make_pass_variable_tracking (gcc::context *ctxt);
 623 extern rtl_opt_pass *make_pass_free_cfg (gcc::context *ctxt);
 624 extern rtl_opt_pass *make_pass_machine_reorg (gcc::context *ctxt);
 625 extern rtl_opt_pass *make_pass_cleanup_barriers (gcc::context *ctxt);
 626 extern rtl_opt_pass *make_pass_delay_slots (gcc::context *ctxt);
 627 extern rtl_opt_pass *make_pass_split_for_shorten_branches (gcc::context *ctxt);
 628 extern rtl_opt_pass *make_pass_split_before_regstack (gcc::context *ctxt);
 629 extern rtl_opt_pass *make_pass_convert_to_eh_region_ranges (gcc::context *ctxt);
 630 extern rtl_opt_pass *make_pass_shorten_branches (gcc::context *ctxt);
 631 extern rtl_opt_pass *make_pass_set_nothrow_function_flags (gcc::context *ctxt);
 632 extern rtl_opt_pass *make_pass_dwarf2_frame (gcc::context *ctxt);
 633 extern rtl_opt_pass *make_pass_final (gcc::context *ctxt);
 634 extern rtl_opt_pass *make_pass_rtl_seqabstr (gcc::context *ctxt);
 635 extern gimple_opt_pass *make_pass_release_ssa_names (gcc::context *ctxt);
 636 extern gimple_opt_pass *make_pass_early_inline (gcc::context *ctxt);
 637 extern gimple_opt_pass *make_pass_local_fn_summary (gcc::context *ctxt);
 638 extern gimple_opt_pass *make_pass_update_address_taken (gcc::context *ctxt);
 639 extern gimple_opt_pass *make_pass_convert_switch (gcc::context *ctxt);
 640 extern gimple_opt_pass *make_pass_lower_vaarg (gcc::context *ctxt);
 641 extern gimple_opt_pass *make_pass_gimple_isel (gcc::context *ctxt);
 642
 643 /* Current optimization pass.  */
 644 extern opt_pass *current_pass;
 645
 646 extern bool execute_one_pass (opt_pass *);
 647 extern void execute_pass_list (function *, opt_pass *);
 648 extern void execute_ipa_pass_list (opt_pass *);
 649 extern void execute_ipa_summary_passes (ipa_opt_pass_d *);
 650 extern void execute_all_ipa_transforms (bool);
 651 extern void execute_all_ipa_stmt_fixups (struct cgraph_node *, gimple **);
 652 extern bool pass_init_dump_file (opt_pass *);
 653 extern void pass_fini_dump_file (opt_pass *);
 654 extern void emergency_dump_function (void);
 655
 656 extern void print_current_pass (FILE *);
 657 extern void debug_pass (void);
 658 extern void ipa_write_summaries (void);
 659 extern void ipa_write_optimization_summaries (struct lto_symtab_encoder_d *);
 660 extern void ipa_read_summaries (void);
 661 extern void ipa_read_optimization_summaries (void);
 662 extern void register_one_dump_file (opt_pass *);
 663 extern bool function_called_by_processed_nodes_p (void);
 664
 665 /* Declare for plugins.  */
 666 extern void do_per_function_toporder (void (*) (function *, void *), void *);
 667
 668 extern void disable_pass (const char *);
 669 extern void enable_pass (const char *);
 670 extern void dump_passes (void);
 671
 672 #endif /* GCC_TREE_PASS_H */