| /* Top level of GCC compilers (cc1, cc1plus, etc.) |
| Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
| 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 2, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING. If not, write to the Free |
| Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301, USA. */ |
| |
| /* This is the top level of cc1/c++. |
| It parses command args, opens files, invokes the various passes |
| in the proper order, and counts the time used by each. |
| Error messages and low-level interface to malloc also handled here. */ |
| |
| #include "config.h" |
| #undef FLOAT /* This is for hpux. They should change hpux. */ |
| #undef FFS /* Some systems define this in param.h. */ |
| #include "system.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| #include <signal.h> |
| |
| #ifdef HAVE_SYS_RESOURCE_H |
| # include <sys/resource.h> |
| #endif |
| |
| #ifdef HAVE_SYS_TIMES_H |
| # include <sys/times.h> |
| #endif |
| |
| #include "line-map.h" |
| #include "input.h" |
| #include "tree.h" |
| #include "rtl.h" |
| #include "tm_p.h" |
| #include "flags.h" |
| #include "insn-attr.h" |
| #include "insn-config.h" |
| #include "insn-flags.h" |
| #include "hard-reg-set.h" |
| #include "recog.h" |
| #include "output.h" |
| #include "except.h" |
| #include "function.h" |
| #include "toplev.h" |
| #include "expr.h" |
| #include "basic-block.h" |
| #include "intl.h" |
| #include "ggc.h" |
| #include "graph.h" |
| #include "regs.h" |
| #include "timevar.h" |
| #include "diagnostic.h" |
| #include "params.h" |
| #include "reload.h" |
| #include "dwarf2asm.h" |
| #include "integrate.h" |
| #include "real.h" |
| #include "debug.h" |
| #include "target.h" |
| #include "langhooks.h" |
| #include "cfglayout.h" |
| #include "cfgloop.h" |
| #include "hosthooks.h" |
| #include "cgraph.h" |
| #include "opts.h" |
| #include "coverage.h" |
| #include "value-prof.h" |
| #include "tree-inline.h" |
| #include "tree-flow.h" |
| #include "tree-pass.h" |
| #include "tree-dump.h" |
| /* LLVM LOCAL begin */ |
| #ifdef ENABLE_LLVM |
| #include "llvm.h" |
| |
| /* LLVM doesn't need the GCC scheduler. Clear this so it need not be linked |
| in. */ |
| #undef INSN_SCHEDULING |
| #endif |
| /* LLVM LOCAL end */ |
| |
| |
| |
| #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) |
| #include "dwarf2out.h" |
| #endif |
| |
| #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
| #include "dbxout.h" |
| #endif |
| |
| #ifdef SDB_DEBUGGING_INFO |
| #include "sdbout.h" |
| #endif |
| |
| #ifdef XCOFF_DEBUGGING_INFO |
| #include "xcoffout.h" /* Needed for external data |
| declarations for e.g. AIX 4.x. */ |
| #endif |
| |
| /* Global variables used to communicate with passes. */ |
| int dump_flags; |
| bool in_gimple_form; |
| |
| |
| /* This is called from various places for FUNCTION_DECL, VAR_DECL, |
| and TYPE_DECL nodes. |
| |
| This does nothing for local (non-static) variables, unless the |
| variable is a register variable with DECL_ASSEMBLER_NAME set. In |
| that case, or if the variable is not an automatic, it sets up the |
| RTL and outputs any assembler code (label definition, storage |
| allocation and initialization). |
| |
| DECL is the declaration. TOP_LEVEL is nonzero |
| if this declaration is not within a function. */ |
| |
| void |
| rest_of_decl_compilation (tree decl, |
| int top_level, |
| int at_end) |
| { |
| /* We deferred calling assemble_alias so that we could collect |
| other attributes such as visibility. Emit the alias now. */ |
| { |
| tree alias; |
| alias = lookup_attribute ("alias", DECL_ATTRIBUTES (decl)); |
| if (alias) |
| { |
| alias = TREE_VALUE (TREE_VALUE (alias)); |
| alias = get_identifier (TREE_STRING_POINTER (alias)); |
| assemble_alias (decl, alias); |
| } |
| } |
| |
| /* Can't defer this, because it needs to happen before any |
| later function definitions are processed. */ |
| if (DECL_ASSEMBLER_NAME_SET_P (decl) && DECL_REGISTER (decl)) |
| /* LLVM LOCAL begin */ |
| #ifndef ENABLE_LLVM |
| make_decl_rtl (decl); |
| #else |
| make_decl_llvm (decl); |
| #endif |
| /* LLVM LOCAL end */ |
| |
| /* Forward declarations for nested functions are not "external", |
| but we need to treat them as if they were. */ |
| if (TREE_STATIC (decl) || DECL_EXTERNAL (decl) |
| || TREE_CODE (decl) == FUNCTION_DECL) |
| { |
| timevar_push (TV_VARCONST); |
| |
| /* Don't output anything when a tentative file-scope definition |
| is seen. But at end of compilation, do output code for them. |
| |
| We do output all variables when unit-at-a-time is active and rely on |
| callgraph code to defer them except for forward declarations |
| (see gcc.c-torture/compile/920624-1.c) */ |
| if ((at_end |
| || !DECL_DEFER_OUTPUT (decl) |
| || DECL_INITIAL (decl)) |
| && !DECL_EXTERNAL (decl)) |
| { |
| if (TREE_CODE (decl) != FUNCTION_DECL) |
| cgraph_varpool_finalize_decl (decl); |
| else |
| assemble_variable (decl, top_level, at_end, 0); |
| } |
| |
| #ifdef ASM_FINISH_DECLARE_OBJECT |
| if (decl == last_assemble_variable_decl) |
| { |
| ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl, |
| top_level, at_end); |
| } |
| #endif |
| |
| timevar_pop (TV_VARCONST); |
| } |
| else if (TREE_CODE (decl) == TYPE_DECL |
| /* Like in rest_of_type_compilation, avoid confusing the debug |
| information machinery when there are errors. */ |
| && !(sorrycount || errorcount)) |
| { |
| /* LLVM LOCAL begin */ |
| #ifndef ENABLE_LLVM |
| timevar_push (TV_SYMOUT); |
| debug_hooks->type_decl (decl, !top_level); |
| timevar_pop (TV_SYMOUT); |
| #else |
| llvm_emit_typedef (decl); |
| #endif |
| /* LLVM LOCAL end */ |
| } |
| |
| /* Let cgraph know about the existence of variables. */ |
| if (TREE_CODE (decl) == VAR_DECL && !DECL_EXTERNAL (decl)) |
| cgraph_varpool_node (decl); |
| } |
| |
| /* Called after finishing a record, union or enumeral type. */ |
| |
| void |
| rest_of_type_compilation (tree type, int toplev) |
| { |
| /* Avoid confusing the debug information machinery when there are |
| errors. */ |
| if (errorcount != 0 || sorrycount != 0) |
| return; |
| |
| /* LLVM LOCAL begin */ |
| #ifndef ENABLE_LLVM |
| timevar_push (TV_SYMOUT); |
| debug_hooks->type_decl (TYPE_STUB_DECL (type), !toplev); |
| timevar_pop (TV_SYMOUT); |
| #else |
| llvm_emit_typedef (TYPE_STUB_DECL (type)); |
| toplev = toplev; /* avoid unused var warning */ |
| #endif |
| /* LLVM LOCAL end */ |
| } |
| |
| |
| |
| void |
| finish_optimization_passes (void) |
| { |
| /* LLVM LOCAL begin Dead code strip cc1. */ |
| #ifdef ENABLE_LLVM |
| return; |
| #else |
| enum tree_dump_index i; |
| struct dump_file_info *dfi; |
| char *name; |
| |
| timevar_push (TV_DUMP); |
| if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) |
| { |
| dump_file = dump_begin (pass_profile.static_pass_number, NULL); |
| end_branch_prob (); |
| if (dump_file) |
| dump_end (pass_profile.static_pass_number, dump_file); |
| } |
| |
| if (optimize > 0) |
| { |
| dump_file = dump_begin (pass_combine.static_pass_number, NULL); |
| if (dump_file) |
| { |
| dump_combine_total_stats (dump_file); |
| dump_end (pass_combine.static_pass_number, dump_file); |
| } |
| } |
| |
| /* Do whatever is necessary to finish printing the graphs. */ |
| if (graph_dump_format != no_graph) |
| for (i = TDI_end; (dfi = get_dump_file_info (i)) != NULL; ++i) |
| if (dump_initialized_p (i) |
| && (dfi->flags & TDF_GRAPH) != 0 |
| && (name = get_dump_file_name (i)) != NULL) |
| { |
| finish_graph_dump_file (name); |
| free (name); |
| } |
| |
| timevar_pop (TV_DUMP); |
| #endif |
| /* LLVM LOCAL end Dead code strip cc1. */ |
| } |
| |
| static bool |
| gate_rest_of_compilation (void) |
| { |
| /* Early return if there were errors. We can run afoul of our |
| consistency checks, and there's not really much point in fixing them. */ |
| return !(rtl_dump_and_exit || flag_syntax_only || errorcount || sorrycount); |
| } |
| |
| struct tree_opt_pass pass_rest_of_compilation = |
| { |
| NULL, /* name */ |
| gate_rest_of_compilation, /* gate */ |
| NULL, /* execute */ |
| NULL, /* sub */ |
| NULL, /* next */ |
| 0, /* static_pass_number */ |
| TV_REST_OF_COMPILATION, /* tv_id */ |
| PROP_rtl, /* properties_required */ |
| 0, /* properties_provided */ |
| 0, /* properties_destroyed */ |
| 0, /* todo_flags_start */ |
| TODO_ggc_collect, /* todo_flags_finish */ |
| 0 /* letter */ |
| }; |
| |
| static bool |
| gate_postreload (void) |
| { |
| return reload_completed; |
| } |
| |
| struct tree_opt_pass pass_postreload = |
| { |
| NULL, /* name */ |
| gate_postreload, /* gate */ |
| NULL, /* execute */ |
| NULL, /* sub */ |
| NULL, /* next */ |
| 0, /* static_pass_number */ |
| 0, /* tv_id */ |
| PROP_rtl, /* properties_required */ |
| 0, /* properties_provided */ |
| 0, /* properties_destroyed */ |
| 0, /* todo_flags_start */ |
| TODO_ggc_collect, /* todo_flags_finish */ |
| 0 /* letter */ |
| }; |
| |
| |
| |
| /* The root of the compilation pass tree, once constructed. */ |
| /* LLVM LOCAL begin */ |
| #ifdef ENABLE_LLVM |
| struct tree_opt_pass *all_lowering_passes, *all_extra_lowering_passes; |
| #else |
| struct tree_opt_pass *all_passes, *all_ipa_passes, *all_lowering_passes; |
| #endif |
| /* LLVM LOCAL end */ |
| |
| /* Iterate over the pass tree allocating dump file numbers. We want |
| to do this depth first, and independent of whether the pass is |
| enabled or not. */ |
| |
| static void |
| register_one_dump_file (struct tree_opt_pass *pass, bool ipa, int properties) |
| { |
| char *dot_name, *flag_name, *glob_name; |
| const char *prefix; |
| char num[10]; |
| int flags; |
| |
| /* See below in next_pass_1. */ |
| num[0] = '\0'; |
| if (pass->static_pass_number != -1) |
| sprintf (num, "%d", ((int) pass->static_pass_number < 0 |
| ? 1 : pass->static_pass_number)); |
| |
| dot_name = concat (".", pass->name, num, NULL); |
| if (ipa) |
| prefix = "ipa-", flags = TDF_IPA; |
| else if (properties & PROP_trees) |
| prefix = "tree-", flags = TDF_TREE; |
| else |
| prefix = "rtl-", flags = TDF_RTL; |
| |
| flag_name = concat (prefix, pass->name, num, NULL); |
| glob_name = concat (prefix, pass->name, NULL); |
| pass->static_pass_number = dump_register (dot_name, flag_name, glob_name, |
| flags, pass->letter); |
| } |
| |
| /* Recursive worker function for register_dump_files. */ |
| |
| static int |
| register_dump_files_1 (struct tree_opt_pass *pass, bool ipa, int properties) |
| { |
| do |
| { |
| int new_properties = (properties | pass->properties_provided) |
| & ~pass->properties_destroyed; |
| |
| if (pass->name) |
| register_one_dump_file (pass, ipa, new_properties); |
| |
| if (pass->sub) |
| new_properties = register_dump_files_1 (pass->sub, false, |
| new_properties); |
| |
| /* If we have a gate, combine the properties that we could have with |
| and without the pass being examined. */ |
| if (pass->gate) |
| properties &= new_properties; |
| else |
| properties = new_properties; |
| |
| pass = pass->next; |
| } |
| while (pass); |
| |
| return properties; |
| } |
| |
| /* Register the dump files for the pipeline starting at PASS. IPA is |
| true if the pass is inter-procedural, and PROPERTIES reflects the |
| properties that are guaranteed to be available at the beginning of |
| the pipeline. */ |
| |
| static void |
| register_dump_files (struct tree_opt_pass *pass, bool ipa, int properties) |
| { |
| pass->properties_required |= properties; |
| pass->todo_flags_start |= TODO_set_props; |
| register_dump_files_1 (pass, ipa, properties); |
| } |
| |
| /* Add a pass to the pass list. Duplicate the pass if it's already |
| in the list. */ |
| |
| static struct tree_opt_pass ** |
| next_pass_1 (struct tree_opt_pass **list, struct tree_opt_pass *pass) |
| { |
| /* A nonzero static_pass_number indicates that the |
| pass is already in the list. */ |
| if (pass->static_pass_number) |
| { |
| struct tree_opt_pass *new; |
| |
| new = xmalloc (sizeof (*new)); |
| memcpy (new, pass, sizeof (*new)); |
| |
| /* Indicate to register_dump_files that this pass has duplicates, |
| and so it should rename the dump file. The first instance will |
| be -1, and be number of duplicates = -static_pass_number - 1. |
| Subsequent instances will be > 0 and just the duplicate number. */ |
| if (pass->name) |
| { |
| pass->static_pass_number -= 1; |
| new->static_pass_number = -pass->static_pass_number; |
| } |
| |
| *list = new; |
| } |
| else |
| { |
| pass->static_pass_number = -1; |
| *list = pass; |
| } |
| |
| return &(*list)->next; |
| |
| } |
| |
| /* Construct the pass tree. The sequencing of passes is driven by |
| the cgraph routines: |
| |
| cgraph_finalize_compilation_unit () |
| for each node N in the cgraph |
| cgraph_analyze_function (N) |
| cgraph_lower_function (N) -> all_lowering_passes |
| |
| If we are optimizing, cgraph_optimize is then invoked: |
| |
| cgraph_optimize () |
| ipa_passes () -> all_ipa_passes |
| cgraph_expand_all_functions () |
| for each node N in the cgraph |
| cgraph_expand_function (N) |
| cgraph_lower_function (N) -> Now a NOP. |
| lang_hooks.callgraph.expand_function (DECL (N)) |
| tree_rest_of_compilation (DECL (N)) -> all_passes |
| */ |
| |
| void |
| init_optimization_passes (void) |
| { |
| struct tree_opt_pass **p; |
| |
| #define NEXT_PASS(PASS) (p = next_pass_1 (p, &PASS)) |
| /* LLVM LOCAL begin */ |
| #ifndef ENABLE_LLVM |
| /* Interprocedural optimization passes. */ |
| p = &all_ipa_passes; |
| NEXT_PASS (pass_early_ipa_inline); |
| NEXT_PASS (pass_early_local_passes); |
| NEXT_PASS (pass_ipa_cp); |
| NEXT_PASS (pass_ipa_inline); |
| NEXT_PASS (pass_ipa_reference); |
| NEXT_PASS (pass_ipa_pure_const); |
| NEXT_PASS (pass_ipa_type_escape); |
| NEXT_PASS (pass_ipa_pta); |
| *p = NULL; |
| #endif |
| /* LLVM LOCAL end */ |
| |
| /* All passes needed to lower the function into shape optimizers can |
| operate on. */ |
| p = &all_lowering_passes; |
| NEXT_PASS (pass_remove_useless_stmts); |
| NEXT_PASS (pass_mudflap_1); |
| NEXT_PASS (pass_lower_omp); |
| NEXT_PASS (pass_lower_cf); |
| NEXT_PASS (pass_lower_eh); |
| NEXT_PASS (pass_build_cfg); |
| /* LLVM LOCAL begin */ |
| #ifndef ENABLE_LLVM |
| NEXT_PASS (pass_lower_complex_O0); |
| NEXT_PASS (pass_lower_vector); |
| #endif |
| /* LLVM LOCAL end */ |
| NEXT_PASS (pass_warn_function_return); |
| /* LLVM LOCAL begin */ |
| #ifndef ENABLE_LLVM |
| NEXT_PASS (pass_early_tree_profile); |
| #endif |
| /* LLVM LOCAL end */ |
| *p = NULL; |
| |
| /* LLVM LOCAL begin */ |
| #ifdef ENABLE_LLVM |
| p = &all_extra_lowering_passes; |
| NEXT_PASS (pass_fixup_cfg); |
| NEXT_PASS (pass_init_datastructures); |
| NEXT_PASS (pass_expand_omp); |
| NEXT_PASS (pass_fold_builtins); |
| NEXT_PASS (pass_free_datastructures); |
| *p = NULL; |
| #endif |
| /* LLVM LOCAL end */ |
| |
| /* LLVM LOCAL begin - Do not pull in symbols. */ |
| #ifndef ENABLE_LLVM |
| p = &pass_early_local_passes.sub; |
| NEXT_PASS (pass_tree_profile); |
| NEXT_PASS (pass_cleanup_cfg); |
| NEXT_PASS (pass_rebuild_cgraph_edges); |
| *p = NULL; |
| |
| p = &all_passes; |
| NEXT_PASS (pass_fixup_cfg); |
| NEXT_PASS (pass_init_datastructures); |
| NEXT_PASS (pass_expand_omp); |
| NEXT_PASS (pass_all_optimizations); |
| NEXT_PASS (pass_warn_function_noreturn); |
| NEXT_PASS (pass_mudflap_2); |
| NEXT_PASS (pass_free_datastructures); |
| NEXT_PASS (pass_free_cfg_annotations); |
| NEXT_PASS (pass_expand); |
| NEXT_PASS (pass_rest_of_compilation); |
| NEXT_PASS (pass_clean_state); |
| *p = NULL; |
| |
| p = &pass_all_optimizations.sub; |
| NEXT_PASS (pass_referenced_vars); |
| NEXT_PASS (pass_reset_cc_flags); |
| NEXT_PASS (pass_create_structure_vars); |
| NEXT_PASS (pass_build_ssa); |
| NEXT_PASS (pass_may_alias); |
| NEXT_PASS (pass_return_slot); |
| NEXT_PASS (pass_rename_ssa_copies); |
| NEXT_PASS (pass_early_warn_uninitialized); |
| |
| /* Initial scalar cleanups. */ |
| NEXT_PASS (pass_ccp); |
| NEXT_PASS (pass_fre); |
| NEXT_PASS (pass_dce); |
| NEXT_PASS (pass_forwprop); |
| NEXT_PASS (pass_copy_prop); |
| NEXT_PASS (pass_merge_phi); |
| NEXT_PASS (pass_vrp); |
| NEXT_PASS (pass_dce); |
| NEXT_PASS (pass_dominator); |
| |
| /* The only const/copy propagation opportunities left after |
| DOM should be due to degenerate PHI nodes. So rather than |
| run the full propagators, run a specialized pass which |
| only examines PHIs to discover const/copy propagation |
| opportunities. */ |
| NEXT_PASS (pass_phi_only_cprop); |
| |
| NEXT_PASS (pass_phiopt); |
| NEXT_PASS (pass_may_alias); |
| NEXT_PASS (pass_tail_recursion); |
| NEXT_PASS (pass_profile); |
| NEXT_PASS (pass_ch); |
| NEXT_PASS (pass_stdarg); |
| NEXT_PASS (pass_lower_complex); |
| NEXT_PASS (pass_sra); |
| /* FIXME: SRA may generate arbitrary gimple code, exposing new |
| aliased and call-clobbered variables. As mentioned below, |
| pass_may_alias should be a TODO item. */ |
| NEXT_PASS (pass_may_alias); |
| NEXT_PASS (pass_rename_ssa_copies); |
| NEXT_PASS (pass_dominator); |
| |
| /* The only const/copy propagation opportunities left after |
| DOM should be due to degenerate PHI nodes. So rather than |
| run the full propagators, run a specialized pass which |
| only examines PHIs to discover const/copy propagation |
| opportunities. */ |
| NEXT_PASS (pass_phi_only_cprop); |
| |
| NEXT_PASS (pass_reassoc); |
| NEXT_PASS (pass_dce); |
| NEXT_PASS (pass_dse); |
| NEXT_PASS (pass_may_alias); |
| NEXT_PASS (pass_forwprop); |
| NEXT_PASS (pass_phiopt); |
| NEXT_PASS (pass_object_sizes); |
| NEXT_PASS (pass_store_ccp); |
| NEXT_PASS (pass_store_copy_prop); |
| NEXT_PASS (pass_fold_builtins); |
| /* FIXME: May alias should a TODO but for 4.0.0, |
| we add may_alias right after fold builtins |
| which can create arbitrary GIMPLE. */ |
| NEXT_PASS (pass_may_alias); |
| NEXT_PASS (pass_split_crit_edges); |
| NEXT_PASS (pass_pre); |
| NEXT_PASS (pass_may_alias); |
| NEXT_PASS (pass_sink_code); |
| NEXT_PASS (pass_tree_loop); |
| NEXT_PASS (pass_cse_reciprocals); |
| NEXT_PASS (pass_reassoc); |
| NEXT_PASS (pass_vrp); |
| NEXT_PASS (pass_dominator); |
| |
| /* The only const/copy propagation opportunities left after |
| DOM should be due to degenerate PHI nodes. So rather than |
| run the full propagators, run a specialized pass which |
| only examines PHIs to discover const/copy propagation |
| opportunities. */ |
| NEXT_PASS (pass_phi_only_cprop); |
| |
| NEXT_PASS (pass_cd_dce); |
| |
| /* FIXME: If DCE is not run before checking for uninitialized uses, |
| we may get false warnings (e.g., testsuite/gcc.dg/uninit-5.c). |
| However, this also causes us to misdiagnose cases that should be |
| real warnings (e.g., testsuite/gcc.dg/pr18501.c). |
| |
| To fix the false positives in uninit-5.c, we would have to |
| account for the predicates protecting the set and the use of each |
| variable. Using a representation like Gated Single Assignment |
| may help. */ |
| NEXT_PASS (pass_late_warn_uninitialized); |
| NEXT_PASS (pass_dse); |
| NEXT_PASS (pass_forwprop); |
| NEXT_PASS (pass_phiopt); |
| NEXT_PASS (pass_tail_calls); |
| NEXT_PASS (pass_rename_ssa_copies); |
| NEXT_PASS (pass_uncprop); |
| NEXT_PASS (pass_del_ssa); |
| NEXT_PASS (pass_nrv); |
| NEXT_PASS (pass_mark_used_blocks); |
| NEXT_PASS (pass_cleanup_cfg_post_optimizing); |
| *p = NULL; |
| |
| p = &pass_tree_loop.sub; |
| NEXT_PASS (pass_tree_loop_init); |
| NEXT_PASS (pass_copy_prop); |
| NEXT_PASS (pass_lim); |
| NEXT_PASS (pass_tree_unswitch); |
| NEXT_PASS (pass_scev_cprop); |
| NEXT_PASS (pass_empty_loop); |
| NEXT_PASS (pass_record_bounds); |
| NEXT_PASS (pass_linear_transform); |
| NEXT_PASS (pass_iv_canon); |
| NEXT_PASS (pass_if_conversion); |
| NEXT_PASS (pass_vectorize); |
| /* NEXT_PASS (pass_may_alias) cannot be done again because the |
| vectorizer creates alias relations that are not supported by |
| pass_may_alias. */ |
| NEXT_PASS (pass_complete_unroll); |
| NEXT_PASS (pass_loop_prefetch); |
| NEXT_PASS (pass_iv_optimize); |
| NEXT_PASS (pass_tree_loop_done); |
| *p = NULL; |
| |
| p = &pass_vectorize.sub; |
| NEXT_PASS (pass_lower_vector_ssa); |
| NEXT_PASS (pass_dce_loop); |
| *p = NULL; |
| |
| p = &pass_loop2.sub; |
| NEXT_PASS (pass_rtl_loop_init); |
| NEXT_PASS (pass_rtl_move_loop_invariants); |
| NEXT_PASS (pass_rtl_unswitch); |
| NEXT_PASS (pass_rtl_unroll_and_peel_loops); |
| NEXT_PASS (pass_rtl_doloop); |
| NEXT_PASS (pass_rtl_loop_done); |
| *p = NULL; |
| |
| p = &pass_rest_of_compilation.sub; |
| NEXT_PASS (pass_init_function); |
| NEXT_PASS (pass_jump); |
| NEXT_PASS (pass_insn_locators_initialize); |
| NEXT_PASS (pass_rtl_eh); |
| NEXT_PASS (pass_initial_value_sets); |
| NEXT_PASS (pass_unshare_all_rtl); |
| NEXT_PASS (pass_instantiate_virtual_regs); |
| NEXT_PASS (pass_jump2); |
| NEXT_PASS (pass_cse); |
| NEXT_PASS (pass_gcse); |
| NEXT_PASS (pass_jump_bypass); |
| NEXT_PASS (pass_rtl_ifcvt); |
| NEXT_PASS (pass_tracer); |
| /* Perform loop optimizations. It might be better to do them a bit |
| sooner, but we want the profile feedback to work more |
| efficiently. */ |
| NEXT_PASS (pass_loop2); |
| NEXT_PASS (pass_web); |
| NEXT_PASS (pass_cse2); |
| NEXT_PASS (pass_life); |
| NEXT_PASS (pass_combine); |
| NEXT_PASS (pass_if_after_combine); |
| NEXT_PASS (pass_partition_blocks); |
| NEXT_PASS (pass_regmove); |
| NEXT_PASS (pass_split_all_insns); |
| NEXT_PASS (pass_mode_switching); |
| NEXT_PASS (pass_see); |
| NEXT_PASS (pass_recompute_reg_usage); |
| NEXT_PASS (pass_sms); |
| NEXT_PASS (pass_sched); |
| NEXT_PASS (pass_local_alloc); |
| /* APPLE LOCAL begin 5695218 */ |
| #ifdef TARGET_386 |
| NEXT_PASS (pass_life3); |
| #endif |
| /* APPLE LOCAL end 5695218 */ |
| NEXT_PASS (pass_global_alloc); |
| NEXT_PASS (pass_postreload); |
| *p = NULL; |
| |
| p = &pass_postreload.sub; |
| NEXT_PASS (pass_postreload_cse); |
| NEXT_PASS (pass_gcse2); |
| NEXT_PASS (pass_flow2); |
| NEXT_PASS (pass_rtl_seqabstr); |
| NEXT_PASS (pass_stack_adjustments); |
| NEXT_PASS (pass_peephole2); |
| NEXT_PASS (pass_if_after_reload); |
| NEXT_PASS (pass_regrename); |
| NEXT_PASS (pass_reorder_blocks); |
| NEXT_PASS (pass_branch_target_load_optimize); |
| NEXT_PASS (pass_leaf_regs); |
| NEXT_PASS (pass_sched2); |
| NEXT_PASS (pass_split_before_regstack); |
| NEXT_PASS (pass_stack_regs); |
| NEXT_PASS (pass_compute_alignments); |
| NEXT_PASS (pass_duplicate_computed_gotos); |
| NEXT_PASS (pass_variable_tracking); |
| NEXT_PASS (pass_free_cfg); |
| NEXT_PASS (pass_machine_reorg); |
| NEXT_PASS (pass_purge_lineno_notes); |
| NEXT_PASS (pass_cleanup_barriers); |
| NEXT_PASS (pass_delay_slots); |
| NEXT_PASS (pass_split_for_shorten_branches); |
| NEXT_PASS (pass_convert_to_eh_region_ranges); |
| NEXT_PASS (pass_shorten_branches); |
| NEXT_PASS (pass_set_nothrow_function_flags); |
| NEXT_PASS (pass_final); |
| *p = NULL; |
| #endif |
| /* LLVM LOCAL end */ |
| |
| #undef NEXT_PASS |
| |
| /* Register the passes with the tree dump code. */ |
| /* LLVM LOCAL begin */ |
| #ifndef ENABLE_LLVM |
| register_dump_files (all_ipa_passes, true, |
| PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh |
| | PROP_cfg); |
| #endif |
| /* LLVM LOCAL end */ |
| register_dump_files (all_lowering_passes, false, PROP_gimple_any); |
| /* LLVM LOCAL begin */ |
| #ifdef ENABLE_LLVM |
| register_dump_files (all_extra_lowering_passes, false, |
| PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh |
| | PROP_cfg); |
| #else |
| register_dump_files (all_passes, false, |
| PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh |
| | PROP_cfg); |
| #endif |
| /* LLVM LOCAL end */ |
| } |
| |
| static unsigned int last_verified; |
| static unsigned int curr_properties; |
| |
| static void |
| execute_todo (unsigned int flags) |
| { |
| #if defined ENABLE_CHECKING |
| if (need_ssa_update_p ()) |
| gcc_assert (flags & TODO_update_ssa_any); |
| #endif |
| |
| if (curr_properties & PROP_ssa) |
| flags |= TODO_verify_ssa; |
| flags &= ~last_verified; |
| if (!flags) |
| return; |
| |
| /* Always recalculate SMT usage before doing anything else. */ |
| if (flags & TODO_update_smt_usage) |
| recalculate_used_alone (); |
| |
| /* Always cleanup the CFG before trying to update SSA . */ |
| if (flags & TODO_cleanup_cfg) |
| { |
| /* CFG Cleanup can cause a constant to prop into an ARRAY_REF. */ |
| updating_used_alone = true; |
| |
| if (current_loops) |
| cleanup_tree_cfg_loop (); |
| else |
| cleanup_tree_cfg (); |
| |
| /* Update the used alone after cleanup cfg. */ |
| recalculate_used_alone (); |
| |
| /* When cleanup_tree_cfg merges consecutive blocks, it may |
| perform some simplistic propagation when removing single |
| valued PHI nodes. This propagation may, in turn, cause the |
| SSA form to become out-of-date (see PR 22037). So, even |
| if the parent pass had not scheduled an SSA update, we may |
| still need to do one. */ |
| if (!(flags & TODO_update_ssa_any) && need_ssa_update_p ()) |
| flags |= TODO_update_ssa; |
| } |
| |
| if (flags & TODO_update_ssa_any) |
| { |
| unsigned update_flags = flags & TODO_update_ssa_any; |
| update_ssa (update_flags); |
| last_verified &= ~TODO_verify_ssa; |
| } |
| |
| if (flags & TODO_remove_unused_locals) |
| remove_unused_locals (); |
| |
| if ((flags & TODO_dump_func) |
| && dump_file && current_function_decl) |
| { |
| if (curr_properties & PROP_trees) |
| dump_function_to_file (current_function_decl, |
| dump_file, dump_flags); |
| else |
| { |
| /* LLVM LOCAL begin */ |
| #ifndef ENABLE_LLVM |
| if (dump_flags & TDF_SLIM) |
| print_rtl_slim_with_bb (dump_file, get_insns (), dump_flags); |
| else if ((curr_properties & PROP_cfg) && (dump_flags & TDF_BLOCKS)) |
| print_rtl_with_bb (dump_file, get_insns ()); |
| else |
| print_rtl (dump_file, get_insns ()); |
| #endif |
| /* LLVM LOCAL end */ |
| if (curr_properties & PROP_cfg |
| && graph_dump_format != no_graph |
| && (dump_flags & TDF_GRAPH)) |
| print_rtl_graph_with_bb (dump_file_name, get_insns ()); |
| } |
| |
| /* Flush the file. If verification fails, we won't be able to |
| close the file before aborting. */ |
| fflush (dump_file); |
| } |
| if ((flags & TODO_dump_cgraph) |
| && dump_file && !current_function_decl) |
| { |
| dump_cgraph (dump_file); |
| /* Flush the file. If verification fails, we won't be able to |
| close the file before aborting. */ |
| fflush (dump_file); |
| } |
| |
| if (flags & TODO_ggc_collect) |
| { |
| ggc_collect (); |
| } |
| |
| #if defined ENABLE_CHECKING |
| if (flags & TODO_verify_ssa) |
| verify_ssa (true); |
| if (flags & TODO_verify_flow) |
| verify_flow_info (); |
| if (flags & TODO_verify_stmts) |
| verify_stmts (); |
| if (flags & TODO_verify_loops) |
| verify_loop_closed_ssa (); |
| #endif |
| |
| last_verified = flags & TODO_verify_all; |
| } |
| |
| /* Verify invariants that should hold between passes. This is a place |
| to put simple sanity checks. */ |
| |
| static void |
| verify_interpass_invariants (void) |
| { |
| #ifdef ENABLE_CHECKING |
| gcc_assert (!fold_deferring_overflow_warnings_p ()); |
| #endif |
| } |
| |
| static bool |
| execute_one_pass (struct tree_opt_pass *pass) |
| { |
| bool initializing_dump; |
| unsigned int todo_after = 0; |
| |
| /* See if we're supposed to run this pass. */ |
| if (pass->gate && !pass->gate ()) |
| return false; |
| |
| if (pass->todo_flags_start & TODO_set_props) |
| curr_properties = pass->properties_required; |
| |
| /* Note that the folders should only create gimple expressions. |
| This is a hack until the new folder is ready. */ |
| in_gimple_form = (curr_properties & PROP_trees) != 0; |
| |
| /* Run pre-pass verification. */ |
| execute_todo (pass->todo_flags_start); |
| |
| gcc_assert ((curr_properties & pass->properties_required) |
| == pass->properties_required); |
| |
| if (pass->properties_destroyed & PROP_smt_usage) |
| updating_used_alone = true; |
| |
| /* If a dump file name is present, open it if enabled. */ |
| if (pass->static_pass_number != -1) |
| { |
| initializing_dump = !dump_initialized_p (pass->static_pass_number); |
| dump_file_name = get_dump_file_name (pass->static_pass_number); |
| dump_file = dump_begin (pass->static_pass_number, &dump_flags); |
| if (dump_file && current_function_decl) |
| { |
| const char *dname, *aname; |
| dname = lang_hooks.decl_printable_name (current_function_decl, 2); |
| aname = (IDENTIFIER_POINTER |
| (DECL_ASSEMBLER_NAME (current_function_decl))); |
| fprintf (dump_file, "\n;; Function %s (%s)%s\n\n", dname, aname, |
| cfun->function_frequency == FUNCTION_FREQUENCY_HOT |
| ? " (hot)" |
| : cfun->function_frequency == FUNCTION_FREQUENCY_UNLIKELY_EXECUTED |
| ? " (unlikely executed)" |
| : ""); |
| } |
| } |
| else |
| initializing_dump = false; |
| |
| /* If a timevar is present, start it. */ |
| if (pass->tv_id) |
| timevar_push (pass->tv_id); |
| |
| /* Do it! */ |
| if (pass->execute) |
| { |
| todo_after = pass->execute (); |
| last_verified = 0; |
| } |
| |
| /* Stop timevar. */ |
| if (pass->tv_id) |
| timevar_pop (pass->tv_id); |
| |
| curr_properties = (curr_properties | pass->properties_provided) |
| & ~pass->properties_destroyed; |
| |
| if (initializing_dump |
| && dump_file |
| && graph_dump_format != no_graph |
| && (curr_properties & (PROP_cfg | PROP_rtl)) == (PROP_cfg | PROP_rtl)) |
| { |
| get_dump_file_info (pass->static_pass_number)->flags |= TDF_GRAPH; |
| dump_flags |= TDF_GRAPH; |
| clean_graph_dump_file (dump_file_name); |
| } |
| |
| /* Run post-pass cleanup and verification. */ |
| execute_todo (todo_after | pass->todo_flags_finish); |
| verify_interpass_invariants (); |
| |
| /* Flush and close dump file. */ |
| if (dump_file_name) |
| { |
| free ((char *) dump_file_name); |
| dump_file_name = NULL; |
| } |
| if (dump_file) |
| { |
| dump_end (pass->static_pass_number, dump_file); |
| dump_file = NULL; |
| } |
| |
| if (pass->properties_destroyed & PROP_smt_usage) |
| updating_used_alone = false; |
| |
| /* Reset in_gimple_form to not break non-unit-at-a-time mode. */ |
| in_gimple_form = false; |
| |
| return true; |
| } |
| |
| void |
| execute_pass_list (struct tree_opt_pass *pass) |
| { |
| do |
| { |
| if (execute_one_pass (pass) && pass->sub) |
| execute_pass_list (pass->sub); |
| pass = pass->next; |
| } |
| while (pass); |
| } |
| |
| /* Same as execute_pass_list but assume that subpasses of IPA passes |
| are local passes. */ |
| void |
| execute_ipa_pass_list (struct tree_opt_pass *pass) |
| { |
| do |
| { |
| if (execute_one_pass (pass) && pass->sub) |
| { |
| struct cgraph_node *node; |
| for (node = cgraph_nodes; node; node = node->next) |
| if (node->analyzed) |
| { |
| push_cfun (DECL_STRUCT_FUNCTION (node->decl)); |
| current_function_decl = node->decl; |
| execute_pass_list (pass->sub); |
| free_dominance_info (CDI_DOMINATORS); |
| free_dominance_info (CDI_POST_DOMINATORS); |
| current_function_decl = NULL; |
| pop_cfun (); |
| ggc_collect (); |
| } |
| } |
| pass = pass->next; |
| } |
| while (pass); |
| } |