1 /* Top level of GCC compilers (cc1, cc1plus, etc.)
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
22 /* This is the top level of cc1/c++.
23 It parses command args, opens files, invokes the various passes
24 in the proper order, and counts the time used by each.
25 Error messages and low-level interface to malloc also handled here. */
28 #undef FLOAT /* This is for hpux. They should change hpux. */
29 #undef FFS /* Some systems define this in param.h. */
31 #include "coretypes.h"
35 #ifdef HAVE_SYS_RESOURCE_H
36 # include <sys/resource.h>
39 #ifdef HAVE_SYS_TIMES_H
40 # include <sys/times.h>
49 #include "insn-attr.h"
50 #include "insn-config.h"
51 #include "insn-flags.h"
52 #include "hard-reg-set.h"
59 #include "basic-block.h"
65 #include "diagnostic.h"
68 #include "dwarf2asm.h"
69 #include "integrate.h"
73 #include "langhooks.h"
74 #include "cfglayout.h"
76 #include "hosthooks.h"
80 #include "value-prof.h"
81 #include "tree-inline.h"
82 #include "tree-flow.h"
83 #include "tree-pass.h"
84 #include "tree-dump.h"
86 #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
87 #include "dwarf2out.h"
90 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
94 #ifdef SDB_DEBUGGING_INFO
98 #ifdef XCOFF_DEBUGGING_INFO
99 #include "xcoffout.h" /* Needed for external data
100 declarations for e.g. AIX 4.x. */
103 /* Global variables used to communicate with passes. */
108 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
111 This does nothing for local (non-static) variables, unless the
112 variable is a register variable with DECL_ASSEMBLER_NAME set. In
113 that case, or if the variable is not an automatic, it sets up the
114 RTL and outputs any assembler code (label definition, storage
115 allocation and initialization).
117 DECL is the declaration. TOP_LEVEL is nonzero
118 if this declaration is not within a function. */
121 rest_of_decl_compilation (tree decl
,
125 /* We deferred calling assemble_alias so that we could collect
126 other attributes such as visibility. Emit the alias now. */
129 alias
= lookup_attribute ("alias", DECL_ATTRIBUTES (decl
));
132 alias
= TREE_VALUE (TREE_VALUE (alias
));
133 alias
= get_identifier (TREE_STRING_POINTER (alias
));
134 assemble_alias (decl
, alias
);
138 /* Can't defer this, because it needs to happen before any
139 later function definitions are processed. */
140 if (DECL_ASSEMBLER_NAME_SET_P (decl
) && DECL_REGISTER (decl
))
141 make_decl_rtl (decl
);
143 /* Forward declarations for nested functions are not "external",
144 but we need to treat them as if they were. */
145 if (TREE_STATIC (decl
) || DECL_EXTERNAL (decl
)
146 || TREE_CODE (decl
) == FUNCTION_DECL
)
148 timevar_push (TV_VARCONST
);
150 /* Don't output anything when a tentative file-scope definition
151 is seen. But at end of compilation, do output code for them.
153 We do output all variables when unit-at-a-time is active and rely on
154 callgraph code to defer them except for forward declarations
155 (see gcc.c-torture/compile/920624-1.c) */
157 || !DECL_DEFER_OUTPUT (decl
)
158 || DECL_INITIAL (decl
))
159 && !DECL_EXTERNAL (decl
))
161 if (flag_unit_at_a_time
&& !cgraph_global_info_ready
162 && TREE_CODE (decl
) != FUNCTION_DECL
)
163 cgraph_varpool_finalize_decl (decl
);
165 assemble_variable (decl
, top_level
, at_end
, 0);
168 #ifdef ASM_FINISH_DECLARE_OBJECT
169 if (decl
== last_assemble_variable_decl
)
171 ASM_FINISH_DECLARE_OBJECT (asm_out_file
, decl
,
176 timevar_pop (TV_VARCONST
);
178 else if (TREE_CODE (decl
) == TYPE_DECL
179 /* Like in rest_of_type_compilation, avoid confusing the debug
180 information machinery when there are errors. */
181 && !(sorrycount
|| errorcount
))
183 timevar_push (TV_SYMOUT
);
184 debug_hooks
->type_decl (decl
, !top_level
);
185 timevar_pop (TV_SYMOUT
);
188 /* Let cgraph know about the existence of variables. */
189 if (TREE_CODE (decl
) == VAR_DECL
&& !DECL_EXTERNAL (decl
))
190 cgraph_varpool_node (decl
);
193 /* Called after finishing a record, union or enumeral type. */
196 rest_of_type_compilation (tree type
, int toplev
)
198 /* Avoid confusing the debug information machinery when there are
200 if (errorcount
!= 0 || sorrycount
!= 0)
203 timevar_push (TV_SYMOUT
);
204 debug_hooks
->type_decl (TYPE_STUB_DECL (type
), !toplev
);
205 timevar_pop (TV_SYMOUT
);
211 finish_optimization_passes (void)
213 enum tree_dump_index i
;
214 struct dump_file_info
*dfi
;
217 timevar_push (TV_DUMP
);
218 if (profile_arc_flag
|| flag_test_coverage
|| flag_branch_probabilities
)
220 dump_file
= dump_begin (pass_branch_prob
.static_pass_number
, NULL
);
223 dump_end (pass_branch_prob
.static_pass_number
, dump_file
);
228 dump_file
= dump_begin (pass_combine
.static_pass_number
, NULL
);
231 dump_combine_total_stats (dump_file
);
232 dump_end (pass_combine
.static_pass_number
, dump_file
);
236 /* Do whatever is necessary to finish printing the graphs. */
237 if (graph_dump_format
!= no_graph
)
238 for (i
= TDI_end
; (dfi
= get_dump_file_info (i
)) != NULL
; ++i
)
239 if (dump_initialized_p (i
)
240 && (dfi
->flags
& TDF_RTL
) != 0
241 && (name
= get_dump_file_name (i
)) != NULL
)
243 finish_graph_dump_file (name
);
247 timevar_pop (TV_DUMP
);
251 gate_rest_of_compilation (void)
253 /* Early return if there were errors. We can run afoul of our
254 consistency checks, and there's not really much point in fixing them. */
255 return !(rtl_dump_and_exit
|| flag_syntax_only
|| errorcount
|| sorrycount
);
258 struct tree_opt_pass pass_rest_of_compilation
=
261 gate_rest_of_compilation
, /* gate */
265 0, /* static_pass_number */
266 TV_REST_OF_COMPILATION
, /* tv_id */
267 PROP_rtl
, /* properties_required */
268 0, /* properties_provided */
269 0, /* properties_destroyed */
270 0, /* todo_flags_start */
271 TODO_ggc_collect
, /* todo_flags_finish */
276 gate_postreload (void)
278 return reload_completed
;
281 struct tree_opt_pass pass_postreload
=
284 gate_postreload
, /* gate */
288 0, /* static_pass_number */
290 PROP_rtl
, /* properties_required */
291 0, /* properties_provided */
292 0, /* properties_destroyed */
293 0, /* todo_flags_start */
294 TODO_ggc_collect
, /* todo_flags_finish */
300 /* The root of the compilation pass tree, once constructed. */
301 struct tree_opt_pass
*all_passes
, *all_ipa_passes
, *all_lowering_passes
;
303 /* Iterate over the pass tree allocating dump file numbers. We want
304 to do this depth first, and independent of whether the pass is
308 register_one_dump_file (struct tree_opt_pass
*pass
, bool ipa
, int n
)
310 char *dot_name
, *flag_name
, *glob_name
;
313 /* See below in next_pass_1. */
315 if (pass
->static_pass_number
!= -1)
316 sprintf (num
, "%d", ((int) pass
->static_pass_number
< 0
317 ? 1 : pass
->static_pass_number
));
319 dot_name
= concat (".", pass
->name
, num
, NULL
);
322 flag_name
= concat ("ipa-", pass
->name
, num
, NULL
);
323 glob_name
= concat ("ipa-", pass
->name
, NULL
);
324 /* First IPA dump is cgraph that is dumped via separate channels. */
325 pass
->static_pass_number
= dump_register (dot_name
, flag_name
, glob_name
,
328 else if (pass
->properties_provided
& PROP_trees
)
330 flag_name
= concat ("tree-", pass
->name
, num
, NULL
);
331 glob_name
= concat ("tree-", pass
->name
, NULL
);
332 pass
->static_pass_number
= dump_register (dot_name
, flag_name
, glob_name
,
333 TDF_TREE
, n
+ TDI_tree_all
, 0);
337 flag_name
= concat ("rtl-", pass
->name
, num
, NULL
);
338 glob_name
= concat ("rtl-", pass
->name
, NULL
);
339 pass
->static_pass_number
= dump_register (dot_name
, flag_name
, glob_name
,
340 TDF_RTL
, n
, pass
->letter
);
345 register_dump_files (struct tree_opt_pass
*pass
, bool ipa
, int properties
)
353 pass
->properties_required
= properties
;
355 (properties
| pass
->properties_provided
) & ~pass
->properties_destroyed
;
357 /* Reset the counter when we reach RTL-based passes. */
358 if ((new_properties
^ pass
->properties_required
) & PROP_rtl
)
366 new_properties
= register_dump_files (pass
->sub
, false, new_properties
);
368 /* If we have a gate, combine the properties that we could have with
369 and without the pass being examined. */
371 properties
&= new_properties
;
373 properties
= new_properties
;
375 pass
->properties_provided
= properties
;
377 register_one_dump_file (pass
, ipa
, pass_number
);
386 /* Add a pass to the pass list. Duplicate the pass if it's already
389 static struct tree_opt_pass
**
390 next_pass_1 (struct tree_opt_pass
**list
, struct tree_opt_pass
*pass
)
393 /* A nonzero static_pass_number indicates that the
394 pass is already in the list. */
395 if (pass
->static_pass_number
)
397 struct tree_opt_pass
*new;
399 new = xmalloc (sizeof (*new));
400 memcpy (new, pass
, sizeof (*new));
402 /* Indicate to register_dump_files that this pass has duplicates,
403 and so it should rename the dump file. The first instance will
404 be -1, and be number of duplicates = -static_pass_number - 1.
405 Subsequent instances will be > 0 and just the duplicate number. */
408 pass
->static_pass_number
-= 1;
409 new->static_pass_number
= -pass
->static_pass_number
;
416 pass
->static_pass_number
= -1;
420 return &(*list
)->next
;
424 /* Construct the pass tree. */
427 init_optimization_passes (void)
429 struct tree_opt_pass
**p
;
431 #define NEXT_PASS(PASS) (p = next_pass_1 (p, &PASS))
432 /* Interprocedural optimization passes. */
434 NEXT_PASS (pass_early_ipa_inline
);
435 NEXT_PASS (pass_early_local_passes
);
436 /*NEXT_PASS (pass_ipa_cp);*/
437 NEXT_PASS (pass_ipa_inline
);
438 /*NEXT_PASS (pass_ipa_alias);
439 NEXT_PASS (pass_ipa_reference);
440 NEXT_PASS (pass_ipa_pure_const);
441 NEXT_PASS (pass_ipa_type_escape);*/
444 /* All passes needed to lower the function into shape optimizers can operate
445 on. These passes are performed before interprocedural passes, unlike rest
446 of local passes (all_passes). */
447 p
= &all_lowering_passes
;
448 NEXT_PASS (pass_remove_useless_stmts
);
449 NEXT_PASS (pass_mudflap_1
);
450 NEXT_PASS (pass_lower_cf
);
451 NEXT_PASS (pass_lower_eh
);
452 NEXT_PASS (pass_build_cfg
);
453 NEXT_PASS (pass_lower_complex_O0
);
454 NEXT_PASS (pass_lower_vector
);
455 NEXT_PASS (pass_warn_function_return
);
456 NEXT_PASS (pass_early_tree_profile
);
459 p
= &pass_early_local_passes
.sub
;
460 NEXT_PASS (pass_tree_profile
);
461 NEXT_PASS (pass_cleanup_cfg
);
462 NEXT_PASS (pass_all_early_optimizations
);
463 NEXT_PASS (pass_rebuild_cgraph_edges
);
466 p
= &pass_all_early_optimizations
.sub
;
467 NEXT_PASS (pass_init_datastructures
);
468 NEXT_PASS (pass_referenced_vars
);
469 NEXT_PASS (pass_create_structure_vars
);
470 NEXT_PASS (pass_build_ssa
);
471 /*NEXT_PASS (pass_may_alias);
472 NEXT_PASS (pass_return_slot);
473 NEXT_PASS (pass_rename_ssa_copies);*/
474 NEXT_PASS (pass_early_warn_uninitialized
);
478 NEXT_PASS (pass_fixup_cfg
);
479 /*NEXT_PASS (pass_init_datastructures);*/
480 NEXT_PASS (pass_all_optimizations
);
481 NEXT_PASS (pass_warn_function_noreturn
);
482 NEXT_PASS (pass_mudflap_2
);
483 NEXT_PASS (pass_free_datastructures
);
484 NEXT_PASS (pass_free_cfg_annotations
);
485 NEXT_PASS (pass_expand
);
486 NEXT_PASS (pass_rest_of_compilation
);
487 NEXT_PASS (pass_clean_state
);
490 p
= &pass_all_optimizations
.sub
;
491 /*NEXT_PASS (pass_referenced_vars);
492 NEXT_PASS (pass_create_structure_vars);
493 NEXT_PASS (pass_build_ssa);*/
494 NEXT_PASS (pass_all_early_optimizations
);
495 NEXT_PASS (pass_may_alias
);
496 NEXT_PASS (pass_return_slot
);
497 /*NEXT_PASS (pass_rename_ssa_copies);
498 NEXT_PASS (pass_early_warn_uninitialized);*/
499 NEXT_PASS (pass_eliminate_useless_stores
);
501 /* Initial scalar cleanups. */
502 NEXT_PASS (pass_ccp
);
503 NEXT_PASS (pass_fre
);
504 NEXT_PASS (pass_dce
);
505 NEXT_PASS (pass_forwprop
);
506 NEXT_PASS (pass_copy_prop
);
507 NEXT_PASS (pass_vrp
);
508 NEXT_PASS (pass_dce
);
509 NEXT_PASS (pass_merge_phi
);
510 NEXT_PASS (pass_dominator
);
512 NEXT_PASS (pass_phiopt
);
513 NEXT_PASS (pass_may_alias
);
514 NEXT_PASS (pass_tail_recursion
);
515 NEXT_PASS (pass_profile
);
517 NEXT_PASS (pass_stdarg
);
518 NEXT_PASS (pass_lower_complex
);
519 NEXT_PASS (pass_sra
);
520 /* FIXME: SRA may generate arbitrary gimple code, exposing new
521 aliased and call-clobbered variables. As mentioned below,
522 pass_may_alias should be a TODO item. */
523 NEXT_PASS (pass_may_alias
);
524 NEXT_PASS (pass_rename_ssa_copies
);
525 NEXT_PASS (pass_dominator
);
526 NEXT_PASS (pass_copy_prop
);
527 NEXT_PASS (pass_dce
);
528 NEXT_PASS (pass_dse
);
529 NEXT_PASS (pass_may_alias
);
530 NEXT_PASS (pass_forwprop
);
531 NEXT_PASS (pass_phiopt
);
532 NEXT_PASS (pass_object_sizes
);
533 NEXT_PASS (pass_store_ccp
);
534 NEXT_PASS (pass_store_copy_prop
);
535 NEXT_PASS (pass_fold_builtins
);
536 /* FIXME: May alias should a TODO but for 4.0.0,
537 we add may_alias right after fold builtins
538 which can create arbitrary GIMPLE. */
539 NEXT_PASS (pass_may_alias
);
540 NEXT_PASS (pass_cse_reciprocals
);
541 NEXT_PASS (pass_split_crit_edges
);
542 NEXT_PASS (pass_reassoc
);
543 NEXT_PASS (pass_pre
);
544 NEXT_PASS (pass_sink_code
);
545 NEXT_PASS (pass_tree_loop
);
546 NEXT_PASS (pass_dominator
);
547 NEXT_PASS (pass_copy_prop
);
548 NEXT_PASS (pass_cd_dce
);
550 /* FIXME: If DCE is not run before checking for uninitialized uses,
551 we may get false warnings (e.g., testsuite/gcc.dg/uninit-5.c).
552 However, this also causes us to misdiagnose cases that should be
553 real warnings (e.g., testsuite/gcc.dg/pr18501.c).
555 To fix the false positives in uninit-5.c, we would have to
556 account for the predicates protecting the set and the use of each
557 variable. Using a representation like Gated Single Assignment
559 NEXT_PASS (pass_late_warn_uninitialized
);
560 NEXT_PASS (pass_dse
);
561 NEXT_PASS (pass_forwprop
);
562 NEXT_PASS (pass_phiopt
);
563 NEXT_PASS (pass_tail_calls
);
564 NEXT_PASS (pass_rename_ssa_copies
);
565 NEXT_PASS (pass_uncprop
);
566 NEXT_PASS (pass_del_ssa
);
567 NEXT_PASS (pass_nrv
);
568 NEXT_PASS (pass_remove_useless_vars
);
569 NEXT_PASS (pass_mark_used_blocks
);
570 NEXT_PASS (pass_cleanup_cfg_post_optimizing
);
573 p
= &pass_tree_loop
.sub
;
574 NEXT_PASS (pass_tree_loop_init
);
575 NEXT_PASS (pass_copy_prop
);
576 NEXT_PASS (pass_lim
);
577 NEXT_PASS (pass_tree_unswitch
);
578 NEXT_PASS (pass_scev_cprop
);
579 NEXT_PASS (pass_empty_loop
);
580 NEXT_PASS (pass_record_bounds
);
581 NEXT_PASS (pass_linear_transform
);
582 NEXT_PASS (pass_iv_canon
);
583 NEXT_PASS (pass_if_conversion
);
584 NEXT_PASS (pass_vectorize
);
585 /* NEXT_PASS (pass_may_alias) cannot be done again because the
586 vectorizer creates alias relations that are not supported by
588 NEXT_PASS (pass_lower_vector_ssa
);
589 NEXT_PASS (pass_complete_unroll
);
590 NEXT_PASS (pass_iv_optimize
);
591 NEXT_PASS (pass_tree_loop_done
);
595 NEXT_PASS (pass_rtl_loop_init
);
596 NEXT_PASS (pass_rtl_move_loop_invariants
);
597 NEXT_PASS (pass_rtl_unswitch
);
598 NEXT_PASS (pass_rtl_unroll_and_peel_loops
);
599 NEXT_PASS (pass_rtl_doloop
);
600 NEXT_PASS (pass_rtl_loop_done
);
603 p
= &pass_rest_of_compilation
.sub
;
604 NEXT_PASS (pass_remove_unnecessary_notes
);
605 NEXT_PASS (pass_init_function
);
606 NEXT_PASS (pass_jump
);
607 NEXT_PASS (pass_insn_locators_initialize
);
608 NEXT_PASS (pass_rtl_eh
);
609 NEXT_PASS (pass_initial_value_sets
);
610 NEXT_PASS (pass_unshare_all_rtl
);
611 NEXT_PASS (pass_instantiate_virtual_regs
);
612 NEXT_PASS (pass_jump2
);
613 NEXT_PASS (pass_cse
);
614 NEXT_PASS (pass_gcse
);
615 NEXT_PASS (pass_loop_optimize
);
616 NEXT_PASS (pass_jump_bypass
);
617 NEXT_PASS (pass_cfg
);
618 NEXT_PASS (pass_branch_prob
);
619 NEXT_PASS (pass_rtl_ifcvt
);
620 NEXT_PASS (pass_tracer
);
621 /* Perform loop optimizations. It might be better to do them a bit
622 sooner, but we want the profile feedback to work more
624 NEXT_PASS (pass_loop2
);
625 NEXT_PASS (pass_web
);
626 NEXT_PASS (pass_cse2
);
627 NEXT_PASS (pass_life
);
628 NEXT_PASS (pass_combine
);
629 NEXT_PASS (pass_if_after_combine
);
630 NEXT_PASS (pass_partition_blocks
);
631 NEXT_PASS (pass_regmove
);
632 NEXT_PASS (pass_split_all_insns
);
633 NEXT_PASS (pass_mode_switching
);
634 NEXT_PASS (pass_recompute_reg_usage
);
635 NEXT_PASS (pass_sms
);
636 NEXT_PASS (pass_sched
);
637 NEXT_PASS (pass_local_alloc
);
638 NEXT_PASS (pass_global_alloc
);
639 NEXT_PASS (pass_postreload
);
642 p
= &pass_postreload
.sub
;
643 NEXT_PASS (pass_postreload_cse
);
644 NEXT_PASS (pass_gcse2
);
645 NEXT_PASS (pass_flow2
);
646 NEXT_PASS (pass_stack_adjustments
);
647 NEXT_PASS (pass_peephole2
);
648 NEXT_PASS (pass_if_after_reload
);
649 NEXT_PASS (pass_regrename
);
650 NEXT_PASS (pass_reorder_blocks
);
651 NEXT_PASS (pass_branch_target_load_optimize
);
652 NEXT_PASS (pass_leaf_regs
);
653 NEXT_PASS (pass_sched2
);
654 NEXT_PASS (pass_split_before_regstack
);
655 NEXT_PASS (pass_stack_regs
);
656 NEXT_PASS (pass_compute_alignments
);
657 NEXT_PASS (pass_duplicate_computed_gotos
);
658 NEXT_PASS (pass_variable_tracking
);
659 NEXT_PASS (pass_free_cfg
);
660 NEXT_PASS (pass_machine_reorg
);
661 NEXT_PASS (pass_purge_lineno_notes
);
662 NEXT_PASS (pass_cleanup_barriers
);
663 NEXT_PASS (pass_delay_slots
);
664 NEXT_PASS (pass_split_for_shorten_branches
);
665 NEXT_PASS (pass_convert_to_eh_region_ranges
);
666 NEXT_PASS (pass_shorten_branches
);
667 NEXT_PASS (pass_set_nothrow_function_flags
);
668 NEXT_PASS (pass_final
);
673 /* Register the passes with the tree dump code. */
674 register_dump_files (all_lowering_passes
, false, PROP_gimple_any
);
675 register_dump_files (all_passes
, false, PROP_gimple_leh
677 register_dump_files (all_ipa_passes
, true, PROP_gimple_leh
681 static unsigned int last_verified
;
684 execute_todo (struct tree_opt_pass
*pass
, unsigned int flags
, bool use_required
)
687 = use_required
? pass
->properties_required
: pass
->properties_provided
;
689 #if defined ENABLE_CHECKING
690 if (need_ssa_update_p ())
691 gcc_assert (flags
& TODO_update_ssa_any
);
694 /* Always cleanup the CFG before doing anything else. */
695 if (flags
& TODO_cleanup_cfg
)
698 cleanup_tree_cfg_loop ();
703 if (flags
& TODO_update_ssa_any
)
705 unsigned update_flags
= flags
& TODO_update_ssa_any
;
706 update_ssa (update_flags
);
709 if ((flags
& TODO_dump_func
)
710 && dump_file
&& current_function_decl
)
712 if (properties
& PROP_trees
)
713 dump_function_to_file (current_function_decl
,
714 dump_file
, dump_flags
);
715 else if (properties
& PROP_cfg
)
716 print_rtl_with_bb (dump_file
, get_insns ());
718 print_rtl (dump_file
, get_insns ());
720 /* Flush the file. If verification fails, we won't be able to
721 close the file before aborting. */
724 if ((flags
& TODO_dump_cgraph
)
725 && dump_file
&& !current_function_decl
)
727 dump_cgraph (dump_file
);
728 /* Flush the file. If verification fails, we won't be able to
729 close the file before aborting. */
733 if (flags
& TODO_ggc_collect
)
738 #if defined ENABLE_CHECKING
739 if ((pass
->properties_required
& PROP_ssa
)
740 && !(pass
->properties_destroyed
& PROP_ssa
))
742 if (flags
& TODO_verify_flow
)
744 if (flags
& TODO_verify_stmts
)
746 if (flags
& TODO_verify_loops
)
747 verify_loop_closed_ssa ();
752 execute_one_pass (struct tree_opt_pass
*pass
)
756 /* See if we're supposed to run this pass. */
757 if (pass
->gate
&& !pass
->gate ())
760 /* Note that the folders should only create gimple expressions.
761 This is a hack until the new folder is ready. */
762 in_gimple_form
= (pass
->properties_provided
& PROP_trees
) != 0;
764 /* Run pre-pass verification. */
765 todo
= pass
->todo_flags_start
& ~last_verified
;
767 execute_todo (pass
, todo
, true);
769 /* If a dump file name is present, open it if enabled. */
770 if (pass
->static_pass_number
!= -1)
772 bool initializing_dump
= !dump_initialized_p (pass
->static_pass_number
);
773 dump_file_name
= get_dump_file_name (pass
->static_pass_number
);
774 dump_file
= dump_begin (pass
->static_pass_number
, &dump_flags
);
775 if (dump_file
&& current_function_decl
)
777 const char *dname
, *aname
;
778 dname
= lang_hooks
.decl_printable_name (current_function_decl
, 2);
779 aname
= (IDENTIFIER_POINTER
780 (DECL_ASSEMBLER_NAME (current_function_decl
)));
781 fprintf (dump_file
, "\n;; Function %s (%s)%s\n\n", dname
, aname
,
782 cfun
->function_frequency
== FUNCTION_FREQUENCY_HOT
784 : cfun
->function_frequency
== FUNCTION_FREQUENCY_UNLIKELY_EXECUTED
785 ? " (unlikely executed)"
789 if (initializing_dump
790 && graph_dump_format
!= no_graph
791 && (pass
->properties_provided
& (PROP_cfg
| PROP_rtl
))
792 == (PROP_cfg
| PROP_rtl
))
793 clean_graph_dump_file (dump_file_name
);
796 /* If a timevar is present, start it. */
798 timevar_push (pass
->tv_id
);
806 timevar_pop (pass
->tv_id
);
808 /* Run post-pass cleanup and verification. */
809 todo
= pass
->todo_flags_finish
;
810 last_verified
= todo
& TODO_verify_all
;
812 execute_todo (pass
, todo
, false);
814 /* Flush and close dump file. */
817 free ((char *) dump_file_name
);
818 dump_file_name
= NULL
;
822 dump_end (pass
->static_pass_number
, dump_file
);
830 execute_pass_list (struct tree_opt_pass
*pass
)
834 if (execute_one_pass (pass
) && pass
->sub
)
835 execute_pass_list (pass
->sub
);
841 /* Same as execute_pass_list but assume that subpasses of IPA passes
844 execute_ipa_pass_list (struct tree_opt_pass
*pass
)
848 if (execute_one_pass (pass
) && pass
->sub
)
850 struct cgraph_node
*node
;
851 for (node
= cgraph_nodes
; node
; node
= node
->next
)
854 push_cfun (DECL_STRUCT_FUNCTION (node
->decl
));
855 current_function_decl
= node
->decl
;
856 execute_pass_list (pass
->sub
);
857 free_dominance_info (CDI_DOMINATORS
);
858 free_dominance_info (CDI_POST_DOMINATORS
);
859 current_function_decl
= NULL
;