1/* Definitions for describing one tree-ssa optimization pass. 2 Copyright (C) 2004-2013 Free Software Foundation, Inc. 3 Contributed by Richard Henderson <rth@redhat.com> 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 3, or (at your option) 10any later version. 11 12GCC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along 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. */ 29enum opt_pass_type 30{ 31 GIMPLE_PASS, 32 RTL_PASS, 33 SIMPLE_IPA_PASS, 34 IPA_PASS 35}; 36 37/* Describe one pass; this is the common part shared across different pass 38 types. */ 39struct opt_pass 40{ 41 /* Optimization pass type. */ 42 enum opt_pass_type type; 43 44 /* Terse name of the pass used as a fragment of the dump file 45 name. If the name starts with a star, no dump happens. */ 46 const char *name; 47 48 /* The -fopt-info optimization group flags as defined in dumpfile.h. */ 49 unsigned int optinfo_flags; 50 51 /* If non-null, this pass and all sub-passes are executed only if 52 the function returns true. */ 53 bool (*gate) (void); 54 55 /* This is the code to run. If null, then there should be sub-passes 56 otherwise this pass does nothing. The return value contains 57 TODOs to execute in addition to those in TODO_flags_finish. */ 58 unsigned int (*execute) (void); 59 60 /* A list of sub-passes to run, dependent on gate predicate. */ 61 struct opt_pass *sub; 62 63 /* Next in the list of passes to run, independent of gate predicate. */ 64 struct opt_pass *next; 65 66 /* Static pass number, used as a fragment of the dump file name. */ 67 int static_pass_number; 68 69 /* The timevar id associated with this pass. */ 70 /* ??? Ideally would be dynamically assigned. */ 71 timevar_id_t tv_id; 72 73 /* Sets of properties input and output from this pass. */ 74 unsigned int properties_required; 75 unsigned int properties_provided; 76 unsigned int properties_destroyed; 77 78 /* Flags indicating common sets things to do before and after. */ 79 unsigned int todo_flags_start; 80 unsigned int todo_flags_finish; 81}; 82 83/* Description of GIMPLE pass. */ 84struct gimple_opt_pass 85{ 86 struct opt_pass pass; 87}; 88 89/* Description of RTL pass. */ 90struct rtl_opt_pass 91{ 92 struct opt_pass pass; 93}; 94 95struct varpool_node; 96struct cgraph_node; 97struct lto_symtab_encoder_d; 98 99/* Description of IPA pass with generate summary, write, execute, read and 100 transform stages. */ 101struct ipa_opt_pass_d 102{ 103 struct opt_pass pass; 104 105 /* IPA passes can analyze function body and variable initializers 106 using this hook and produce summary. */ 107 void (*generate_summary) (void); 108 109 /* This hook is used to serialize IPA summaries on disk. */ 110 void (*write_summary) (void); 111 112 /* This hook is used to deserialize IPA summaries from disk. */ 113 void (*read_summary) (void); 114 115 /* This hook is used to serialize IPA optimization summaries on disk. */ 116 void (*write_optimization_summary) (void); 117 118 /* This hook is used to deserialize IPA summaries from disk. */ 119 void (*read_optimization_summary) (void); 120 121 /* Hook to convert gimple stmt uids into true gimple statements. The second 122 parameter is an array of statements indexed by their uid. */ 123 void (*stmt_fixup) (struct cgraph_node *, gimple *); 124 125 /* Results of interprocedural propagation of an IPA pass is applied to 126 function body via this hook. */ 127 unsigned int function_transform_todo_flags_start; 128 unsigned int (*function_transform) (struct cgraph_node *); 129 void (*variable_transform) (struct varpool_node *); 130}; 131 132/* Description of simple IPA pass. Simple IPA passes have just one execute 133 hook. */ 134struct simple_ipa_opt_pass 135{ 136 struct opt_pass pass; 137}; 138 139/* Pass properties. */ 140#define PROP_gimple_any (1 << 0) /* entire gimple grammar */ 141#define PROP_gimple_lcf (1 << 1) /* lowered control flow */ 142#define PROP_gimple_leh (1 << 2) /* lowered eh */ 143#define PROP_cfg (1 << 3) 144#define PROP_ssa (1 << 5) 145#define PROP_no_crit_edges (1 << 6) 146#define PROP_rtl (1 << 7) 147#define PROP_gimple_lomp (1 << 8) /* lowered OpenMP directives */ 148#define PROP_cfglayout (1 << 9) /* cfglayout mode on RTL */ 149#define PROP_gimple_lcx (1 << 10) /* lowered complex */ 150#define PROP_loops (1 << 11) /* preserve loop structures */ 151 152#define PROP_trees \ 153 (PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp) 154 155/* To-do flags. */ 156#define TODO_ggc_collect (1 << 1) 157#define TODO_verify_ssa (1 << 2) 158#define TODO_verify_flow (1 << 3) 159#define TODO_verify_stmts (1 << 4) 160#define TODO_cleanup_cfg (1 << 5) 161#define TODO_dump_symtab (1 << 7) 162#define TODO_remove_functions (1 << 8) 163#define TODO_rebuild_frequencies (1 << 9) 164#define TODO_verify_rtl_sharing (1 << 10) 165 166/* To-do flags for calls to update_ssa. */ 167 168/* Update the SSA form inserting PHI nodes for newly exposed symbols 169 and virtual names marked for updating. When updating real names, 170 only insert PHI nodes for a real name O_j in blocks reached by all 171 the new and old definitions for O_j. If the iterated dominance 172 frontier for O_j is not pruned, we may end up inserting PHI nodes 173 in blocks that have one or more edges with no incoming definition 174 for O_j. This would lead to uninitialized warnings for O_j's 175 symbol. */ 176#define TODO_update_ssa (1 << 11) 177 178/* Update the SSA form without inserting any new PHI nodes at all. 179 This is used by passes that have either inserted all the PHI nodes 180 themselves or passes that need only to patch use-def and def-def 181 chains for virtuals (e.g., DCE). */ 182#define TODO_update_ssa_no_phi (1 << 12) 183 184/* Insert PHI nodes everywhere they are needed. No pruning of the 185 IDF is done. This is used by passes that need the PHI nodes for 186 O_j even if it means that some arguments will come from the default 187 definition of O_j's symbol. 188 189 WARNING: If you need to use this flag, chances are that your pass 190 may be doing something wrong. Inserting PHI nodes for an old name 191 where not all edges carry a new replacement may lead to silent 192 codegen errors or spurious uninitialized warnings. */ 193#define TODO_update_ssa_full_phi (1 << 13) 194 195/* Passes that update the SSA form on their own may want to delegate 196 the updating of virtual names to the generic updater. Since FUD 197 chains are easier to maintain, this simplifies the work they need 198 to do. NOTE: If this flag is used, any OLD->NEW mappings for real 199 names are explicitly destroyed and only the symbols marked for 200 renaming are processed. */ 201#define TODO_update_ssa_only_virtuals (1 << 14) 202 203/* Some passes leave unused local variables that can be removed from 204 cfun->local_decls. This reduces the size of dump files 205 and the memory footprint for VAR_DECLs. */ 206#define TODO_remove_unused_locals (1 << 15) 207 208/* Call df_finish at the end of the pass. This is done after all of 209 the dumpers have been allowed to run so that they have access to 210 the instance before it is destroyed. */ 211#define TODO_df_finish (1 << 17) 212 213/* Call df_verify at the end of the pass if checking is enabled. */ 214#define TODO_df_verify (1 << 18) 215 216/* Internally used for the first instance of a pass. */ 217#define TODO_mark_first_instance (1 << 19) 218 219/* Rebuild aliasing info. */ 220#define TODO_rebuild_alias (1 << 20) 221 222/* Rebuild the addressable-vars bitmap and do register promotion. */ 223#define TODO_update_address_taken (1 << 21) 224 225/* Rebuild the callgraph edges. */ 226#define TODO_rebuild_cgraph_edges (1 << 22) 227 228/* Internally used in execute_function_todo(). */ 229#define TODO_update_ssa_any \ 230 (TODO_update_ssa \ 231 | TODO_update_ssa_no_phi \ 232 | TODO_update_ssa_full_phi \ 233 | TODO_update_ssa_only_virtuals) 234 235#define TODO_verify_all \ 236 (TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts) 237 238 239/* Register pass info. */ 240 241enum pass_positioning_ops 242{ 243 PASS_POS_INSERT_AFTER, /* Insert after the reference pass. */ 244 PASS_POS_INSERT_BEFORE, /* Insert before the reference pass. */ 245 PASS_POS_REPLACE /* Replace the reference pass. */ 246}; 247 248struct register_pass_info 249{ 250 struct opt_pass *pass; /* New pass to register. */ 251 const char *reference_pass_name; /* Name of the reference pass for hooking 252 up the new pass. */ 253 int ref_pass_instance_number; /* Insert the pass at the specified 254 instance number of the reference pass. 255 Do it for every instance if it is 0. */ 256 enum pass_positioning_ops pos_op; /* how to insert the new pass. */ 257}; 258 259extern struct gimple_opt_pass pass_mudflap_1; 260extern struct gimple_opt_pass pass_mudflap_2; 261extern struct gimple_opt_pass pass_asan; 262extern struct gimple_opt_pass pass_asan_O0; 263extern struct gimple_opt_pass pass_tsan; 264extern struct gimple_opt_pass pass_tsan_O0; 265extern struct gimple_opt_pass pass_lower_cf; 266extern struct gimple_opt_pass pass_refactor_eh; 267extern struct gimple_opt_pass pass_lower_eh; 268extern struct gimple_opt_pass pass_lower_eh_dispatch; 269extern struct gimple_opt_pass pass_lower_resx; 270extern struct gimple_opt_pass pass_build_cfg; 271extern struct gimple_opt_pass pass_early_tree_profile; 272extern struct gimple_opt_pass pass_cleanup_eh; 273extern struct gimple_opt_pass pass_sra; 274extern struct gimple_opt_pass pass_sra_early; 275extern struct gimple_opt_pass pass_early_ipa_sra; 276extern struct gimple_opt_pass pass_tail_recursion; 277extern struct gimple_opt_pass pass_tail_calls; 278extern struct gimple_opt_pass pass_tree_loop; 279extern struct gimple_opt_pass pass_tree_loop_init; 280extern struct gimple_opt_pass pass_lim; 281extern struct gimple_opt_pass pass_tree_unswitch; 282extern struct gimple_opt_pass pass_predcom; 283extern struct gimple_opt_pass pass_iv_canon; 284extern struct gimple_opt_pass pass_scev_cprop; 285extern struct gimple_opt_pass pass_empty_loop; 286extern struct gimple_opt_pass pass_record_bounds; 287extern struct gimple_opt_pass pass_graphite; 288extern struct gimple_opt_pass pass_graphite_transforms; 289extern struct gimple_opt_pass pass_if_conversion; 290extern struct gimple_opt_pass pass_loop_distribution; 291extern struct gimple_opt_pass pass_vectorize; 292extern struct gimple_opt_pass pass_slp_vectorize; 293extern struct gimple_opt_pass pass_complete_unroll; 294extern struct gimple_opt_pass pass_complete_unrolli; 295extern struct gimple_opt_pass pass_parallelize_loops; 296extern struct gimple_opt_pass pass_loop_prefetch; 297extern struct gimple_opt_pass pass_iv_optimize; 298extern struct gimple_opt_pass pass_tree_loop_done; 299extern struct gimple_opt_pass pass_ch; 300extern struct gimple_opt_pass pass_ccp; 301extern struct gimple_opt_pass pass_phi_only_cprop; 302extern struct gimple_opt_pass pass_build_ssa; 303extern struct gimple_opt_pass pass_build_alias; 304extern struct gimple_opt_pass pass_build_ealias; 305extern struct gimple_opt_pass pass_dominator; 306extern struct gimple_opt_pass pass_dce; 307extern struct gimple_opt_pass pass_dce_loop; 308extern struct gimple_opt_pass pass_cd_dce; 309extern struct gimple_opt_pass pass_call_cdce; 310extern struct gimple_opt_pass pass_merge_phi; 311extern struct gimple_opt_pass pass_split_crit_edges; 312extern struct gimple_opt_pass pass_pre; 313extern unsigned int tail_merge_optimize (unsigned int); 314extern struct gimple_opt_pass pass_profile; 315extern struct gimple_opt_pass pass_strip_predict_hints; 316extern struct gimple_opt_pass pass_lower_complex_O0; 317extern struct gimple_opt_pass pass_lower_complex; 318extern struct gimple_opt_pass pass_lower_vector; 319extern struct gimple_opt_pass pass_lower_vector_ssa; 320extern struct gimple_opt_pass pass_lower_omp; 321extern struct gimple_opt_pass pass_diagnose_omp_blocks; 322extern struct gimple_opt_pass pass_expand_omp; 323extern struct gimple_opt_pass pass_expand_omp_ssa; 324extern struct gimple_opt_pass pass_object_sizes; 325extern struct gimple_opt_pass pass_strlen; 326extern struct gimple_opt_pass pass_fold_builtins; 327extern struct gimple_opt_pass pass_stdarg; 328extern struct gimple_opt_pass pass_early_warn_uninitialized; 329extern struct gimple_opt_pass pass_late_warn_uninitialized; 330extern struct gimple_opt_pass pass_cse_reciprocals; 331extern struct gimple_opt_pass pass_cse_sincos; 332extern struct gimple_opt_pass pass_optimize_bswap; 333extern struct gimple_opt_pass pass_optimize_widening_mul; 334extern struct gimple_opt_pass pass_warn_function_return; 335extern struct gimple_opt_pass pass_warn_function_noreturn; 336extern struct gimple_opt_pass pass_cselim; 337extern struct gimple_opt_pass pass_phiopt; 338extern struct gimple_opt_pass pass_forwprop; 339extern struct gimple_opt_pass pass_phiprop; 340extern struct gimple_opt_pass pass_tree_ifcombine; 341extern struct gimple_opt_pass pass_dse; 342extern struct gimple_opt_pass pass_nrv; 343extern struct gimple_opt_pass pass_rename_ssa_copies; 344extern struct gimple_opt_pass pass_sink_code; 345extern struct gimple_opt_pass pass_fre; 346extern struct gimple_opt_pass pass_check_data_deps; 347extern struct gimple_opt_pass pass_copy_prop; 348extern struct gimple_opt_pass pass_vrp; 349extern struct gimple_opt_pass pass_uncprop; 350extern struct gimple_opt_pass pass_return_slot; 351extern struct gimple_opt_pass pass_reassoc; 352extern struct gimple_opt_pass pass_rebuild_cgraph_edges; 353extern struct gimple_opt_pass pass_remove_cgraph_callee_edges; 354extern struct gimple_opt_pass pass_build_cgraph_edges; 355extern struct gimple_opt_pass pass_local_pure_const; 356extern struct gimple_opt_pass pass_tracer; 357extern struct gimple_opt_pass pass_warn_unused_result; 358extern struct gimple_opt_pass pass_diagnose_tm_blocks; 359extern struct gimple_opt_pass pass_lower_tm; 360extern struct gimple_opt_pass pass_tm_init; 361extern struct gimple_opt_pass pass_tm_mark; 362extern struct gimple_opt_pass pass_tm_memopt; 363extern struct gimple_opt_pass pass_tm_edges; 364extern struct gimple_opt_pass pass_split_functions; 365extern struct gimple_opt_pass pass_feedback_split_functions; 366extern struct gimple_opt_pass pass_strength_reduction; 367extern struct gimple_opt_pass pass_remove_local_statics; 368 369/* IPA Passes */ 370extern struct simple_ipa_opt_pass pass_ipa_lower_emutls; 371extern struct simple_ipa_opt_pass pass_ipa_function_and_variable_visibility; 372extern struct simple_ipa_opt_pass pass_ipa_tree_profile; 373 374extern struct simple_ipa_opt_pass pass_early_local_passes; 375 376extern struct ipa_opt_pass_d pass_ipa_whole_program_visibility; 377extern struct ipa_opt_pass_d pass_ipa_lto_gimple_out; 378extern struct simple_ipa_opt_pass pass_ipa_increase_alignment; 379extern struct ipa_opt_pass_d pass_ipa_inline; 380extern struct simple_ipa_opt_pass pass_ipa_free_lang_data; 381extern struct simple_ipa_opt_pass pass_ipa_free_inline_summary; 382extern struct ipa_opt_pass_d pass_ipa_cp; 383extern struct ipa_opt_pass_d pass_ipa_reference; 384extern struct ipa_opt_pass_d pass_ipa_pure_const; 385extern struct simple_ipa_opt_pass pass_ipa_pta; 386extern struct ipa_opt_pass_d pass_ipa_lto_wpa_fixup; 387extern struct ipa_opt_pass_d pass_ipa_lto_finish_out; 388extern struct simple_ipa_opt_pass pass_ipa_tm; 389extern struct ipa_opt_pass_d pass_ipa_profile; 390extern struct ipa_opt_pass_d pass_ipa_cdtor_merge; 391 392extern struct gimple_opt_pass pass_cleanup_cfg_post_optimizing; 393extern struct gimple_opt_pass pass_init_datastructures; 394extern struct gimple_opt_pass pass_fixup_cfg; 395 396extern struct rtl_opt_pass pass_expand; 397extern struct rtl_opt_pass pass_instantiate_virtual_regs; 398extern struct rtl_opt_pass pass_rtl_fwprop; 399extern struct rtl_opt_pass pass_rtl_fwprop_addr; 400extern struct rtl_opt_pass pass_jump; 401extern struct rtl_opt_pass pass_jump2; 402extern struct rtl_opt_pass pass_lower_subreg; 403extern struct rtl_opt_pass pass_cse; 404extern struct rtl_opt_pass pass_fast_rtl_dce; 405extern struct rtl_opt_pass pass_ud_rtl_dce; 406extern struct rtl_opt_pass pass_rtl_dce; 407extern struct rtl_opt_pass pass_rtl_dse1; 408extern struct rtl_opt_pass pass_rtl_dse2; 409extern struct rtl_opt_pass pass_rtl_dse3; 410extern struct rtl_opt_pass pass_rtl_cprop; 411extern struct rtl_opt_pass pass_rtl_pre; 412extern struct rtl_opt_pass pass_rtl_hoist; 413extern struct rtl_opt_pass pass_rtl_store_motion; 414extern struct rtl_opt_pass pass_cse_after_global_opts; 415extern struct rtl_opt_pass pass_rtl_ifcvt; 416 417extern struct rtl_opt_pass pass_into_cfg_layout_mode; 418extern struct rtl_opt_pass pass_outof_cfg_layout_mode; 419 420extern struct rtl_opt_pass pass_loop2; 421extern struct rtl_opt_pass pass_rtl_loop_init; 422extern struct rtl_opt_pass pass_rtl_move_loop_invariants; 423extern struct rtl_opt_pass pass_rtl_unswitch; 424extern struct rtl_opt_pass pass_rtl_unroll_and_peel_loops; 425extern struct rtl_opt_pass pass_rtl_doloop; 426extern struct rtl_opt_pass pass_rtl_loop_done; 427 428extern struct rtl_opt_pass pass_web; 429extern struct rtl_opt_pass pass_cse2; 430extern struct rtl_opt_pass pass_df_initialize_opt; 431extern struct rtl_opt_pass pass_df_initialize_no_opt; 432extern struct rtl_opt_pass pass_reginfo_init; 433extern struct rtl_opt_pass pass_inc_dec; 434extern struct rtl_opt_pass pass_stack_ptr_mod; 435extern struct rtl_opt_pass pass_initialize_regs; 436extern struct rtl_opt_pass pass_combine; 437extern struct rtl_opt_pass pass_if_after_combine; 438extern struct rtl_opt_pass pass_ree; 439extern struct rtl_opt_pass pass_partition_blocks; 440extern struct rtl_opt_pass pass_match_asm_constraints; 441extern struct rtl_opt_pass pass_regmove; 442extern struct rtl_opt_pass pass_split_all_insns; 443extern struct rtl_opt_pass pass_fast_rtl_byte_dce; 444extern struct rtl_opt_pass pass_lower_subreg2; 445extern struct rtl_opt_pass pass_mode_switching; 446extern struct rtl_opt_pass pass_sms; 447extern struct rtl_opt_pass pass_sched; 448extern struct rtl_opt_pass pass_ira; 449extern struct rtl_opt_pass pass_reload; 450extern struct rtl_opt_pass pass_clean_state; 451extern struct rtl_opt_pass pass_branch_prob; 452extern struct rtl_opt_pass pass_value_profile_transformations; 453extern struct rtl_opt_pass pass_postreload_cse; 454extern struct rtl_opt_pass pass_gcse2; 455extern struct rtl_opt_pass pass_split_after_reload; 456extern struct rtl_opt_pass pass_branch_target_load_optimize1; 457extern struct rtl_opt_pass pass_thread_prologue_and_epilogue; 458extern struct rtl_opt_pass pass_stack_adjustments; 459extern struct rtl_opt_pass pass_peephole2; 460extern struct rtl_opt_pass pass_if_after_reload; 461extern struct rtl_opt_pass pass_regrename; 462extern struct rtl_opt_pass pass_cprop_hardreg; 463extern struct rtl_opt_pass pass_reorder_blocks; 464extern struct rtl_opt_pass pass_branch_target_load_optimize2; 465extern struct rtl_opt_pass pass_leaf_regs; 466extern struct rtl_opt_pass pass_split_before_sched2; 467extern struct rtl_opt_pass pass_compare_elim_after_reload; 468extern struct rtl_opt_pass pass_sched2; 469extern struct rtl_opt_pass pass_stack_regs; 470extern struct rtl_opt_pass pass_stack_regs_run; 471extern struct rtl_opt_pass pass_df_finish; 472extern struct rtl_opt_pass pass_compute_alignments; 473extern struct rtl_opt_pass pass_duplicate_computed_gotos; 474extern struct rtl_opt_pass pass_variable_tracking; 475extern struct rtl_opt_pass pass_free_cfg; 476extern struct rtl_opt_pass pass_machine_reorg; 477extern struct rtl_opt_pass pass_cleanup_barriers; 478extern struct rtl_opt_pass pass_delay_slots; 479extern struct rtl_opt_pass pass_split_for_shorten_branches; 480extern struct rtl_opt_pass pass_split_before_regstack; 481extern struct rtl_opt_pass pass_convert_to_eh_region_ranges; 482extern struct rtl_opt_pass pass_shorten_branches; 483extern struct rtl_opt_pass pass_set_nothrow_function_flags; 484extern struct rtl_opt_pass pass_dwarf2_frame; 485extern struct rtl_opt_pass pass_final; 486extern struct rtl_opt_pass pass_rtl_seqabstr; 487extern struct gimple_opt_pass pass_release_ssa_names; 488extern struct gimple_opt_pass pass_early_inline; 489extern struct gimple_opt_pass pass_inline_parameters; 490extern struct gimple_opt_pass pass_update_address_taken; 491extern struct gimple_opt_pass pass_convert_switch; 492 493/* The root of the compilation pass tree, once constructed. */ 494extern struct opt_pass *all_passes, *all_small_ipa_passes, *all_lowering_passes, 495 *all_regular_ipa_passes, *all_lto_gen_passes, *all_late_ipa_passes; 496 497/* Define a list of pass lists so that both passes.c and plugins can easily 498 find all the pass lists. */ 499#define GCC_PASS_LISTS \ 500 DEF_PASS_LIST (all_lowering_passes) \ 501 DEF_PASS_LIST (all_small_ipa_passes) \ 502 DEF_PASS_LIST (all_regular_ipa_passes) \ 503 DEF_PASS_LIST (all_lto_gen_passes) \ 504 DEF_PASS_LIST (all_passes) 505 506#define DEF_PASS_LIST(LIST) PASS_LIST_NO_##LIST, 507enum 508{ 509 GCC_PASS_LISTS 510 PASS_LIST_NUM 511}; 512#undef DEF_PASS_LIST 513 514/* This is used by plugins, and should also be used in 515 passes.c:register_pass. */ 516extern struct opt_pass **gcc_pass_lists[]; 517 518/* Current optimization pass. */ 519extern struct opt_pass *current_pass; 520 521extern struct opt_pass * get_pass_for_id (int); 522extern bool execute_one_pass (struct opt_pass *); 523extern void execute_pass_list (struct opt_pass *); 524extern void execute_ipa_pass_list (struct opt_pass *); 525extern void execute_ipa_summary_passes (struct ipa_opt_pass_d *); 526extern void execute_all_ipa_transforms (void); 527extern void execute_all_ipa_stmt_fixups (struct cgraph_node *, gimple *); 528extern bool pass_init_dump_file (struct opt_pass *); 529extern void pass_fini_dump_file (struct opt_pass *); 530 531extern const char *get_current_pass_name (void); 532extern void print_current_pass (FILE *); 533extern void debug_pass (void); 534extern void ipa_write_summaries (void); 535extern void ipa_write_optimization_summaries (struct lto_symtab_encoder_d *); 536extern void ipa_read_summaries (void); 537extern void ipa_read_optimization_summaries (void); 538extern void register_one_dump_file (struct opt_pass *); 539extern bool function_called_by_processed_nodes_p (void); 540extern void register_pass (struct register_pass_info *); 541 542/* Set to true if the pass is called the first time during compilation of the 543 current function. Note that using this information in the optimization 544 passes is considered not to be clean, and it should be avoided if possible. 545 This flag is currently used to prevent loops from being peeled repeatedly 546 in jump threading; it will be removed once we preserve loop structures 547 throughout the compilation -- we will be able to mark the affected loops 548 directly in jump threading, and avoid peeling them next time. */ 549extern bool first_pass_instance; 550 551extern struct opt_pass **passes_by_id; 552extern int passes_by_id_size; 553 554/* Declare for plugins. */ 555extern void do_per_function_toporder (void (*) (void *), void *); 556 557extern void disable_pass (const char *); 558extern void enable_pass (const char *); 559extern void dump_passes (void); 560 561#endif /* GCC_TREE_PASS_H */ 562