/* Top level of GCC compilers (cc1, cc1plus, etc.) Copyright (C) 1987-2017 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 3, 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 COPYING3. If not see . */ /* 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" #include "system.h" #include "coretypes.h" #include "backend.h" #include "target.h" #include "rtl.h" #include "tree.h" #include "gimple.h" #include "cfghooks.h" #include "df.h" #include "memmodel.h" #include "tm_p.h" #include "ssa.h" #include "emit-rtl.h" #include "cgraph.h" #include "lto-streamer.h" #include "fold-const.h" #include "varasm.h" #include "output.h" #include "graph.h" #include "debug.h" #include "cfgloop.h" #include "value-prof.h" #include "tree-cfg.h" #include "tree-ssa-loop-manip.h" #include "tree-into-ssa.h" #include "tree-dfa.h" #include "tree-ssa.h" #include "tree-pass.h" #include "plugin.h" #include "ipa-utils.h" #include "tree-pretty-print.h" /* for dump_function_header */ #include "context.h" #include "pass_manager.h" #include "cfgrtl.h" #include "tree-ssa-live.h" /* For remove_unused_locals. */ #include "tree-cfgcleanup.h" #include "insn-addr.h" /* for INSN_ADDRESSES_ALLOC. */ using namespace gcc; /* This is used for debugging. It allows the current pass to printed from anywhere in compilation. The variable current_pass is also used for statistics and plugins. */ opt_pass *current_pass; /* Most passes are single-instance (within their context) and thus don't need to implement cloning, but passes that support multiple instances *must* provide their own implementation of the clone method. Handle this by providing a default implemenation, but make it a fatal error to call it. */ opt_pass * opt_pass::clone () { internal_error ("pass %s does not support cloning", name); } void opt_pass::set_pass_param (unsigned int, bool) { internal_error ("pass %s needs a set_pass_param implementation to handle the" " extra argument in NEXT_PASS", name); } bool opt_pass::gate (function *) { return true; } unsigned int opt_pass::execute (function *) { return 0; } opt_pass::opt_pass (const pass_data &data, context *ctxt) : pass_data (data), sub (NULL), next (NULL), static_pass_number (0), m_ctxt (ctxt) { } void pass_manager::execute_early_local_passes () { execute_pass_list (cfun, pass_build_ssa_passes_1->sub); if (flag_check_pointer_bounds) execute_pass_list (cfun, pass_chkp_instrumentation_passes_1->sub); execute_pass_list (cfun, pass_local_optimization_passes_1->sub); } unsigned int pass_manager::execute_pass_mode_switching () { return pass_mode_switching_1->execute (cfun); } /* Call from anywhere to find out what pass this is. Useful for printing out debugging information deep inside an service routine. */ void print_current_pass (FILE *file) { if (current_pass) fprintf (file, "current pass = %s (%d)\n", current_pass->name, current_pass->static_pass_number); else fprintf (file, "no current pass.\n"); } /* Call from the debugger to get the current pass name. */ DEBUG_FUNCTION void debug_pass (void) { print_current_pass (stderr); } /* Global variables used to communicate with passes. */ 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) { bool finalize = true; /* We deferred calling assemble_alias so that we could collect other attributes such as visibility. Emit the alias now. */ if (!in_lto_p) { tree alias; alias = lookup_attribute ("alias", DECL_ATTRIBUTES (decl)); if (alias) { alias = TREE_VALUE (TREE_VALUE (alias)); alias = get_identifier (TREE_STRING_POINTER (alias)); /* A quirk of the initial implementation of aliases required that the user add "extern" to all of them. Which is silly, but now historical. Do note that the symbol is in fact locally defined. */ DECL_EXTERNAL (decl) = 0; TREE_STATIC (decl) = 1; assemble_alias (decl, alias); finalize = false; } } /* 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)) make_decl_rtl (decl); /* 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 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)) && (!VAR_P (decl) || !DECL_HAS_VALUE_EXPR_P (decl)) && !DECL_EXTERNAL (decl)) { /* When reading LTO unit, we also read varpool, so do not rebuild it. */ if (in_lto_p && !at_end) ; else if (finalize && TREE_CODE (decl) != FUNCTION_DECL) varpool_node::finalize_decl (decl); } #ifdef ASM_FINISH_DECLARE_OBJECT if (decl == last_assemble_variable_decl) { ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl, top_level, at_end); } #endif /* Now that we have activated any function-specific attributes that might affect function decl, particularly align, relayout it. */ if (TREE_CODE (decl) == FUNCTION_DECL) targetm.target_option.relayout_function (decl); 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. */ && !seen_error ()) { timevar_push (TV_SYMOUT); debug_hooks->type_decl (decl, !top_level); timevar_pop (TV_SYMOUT); } /* Let cgraph know about the existence of variables. */ if (in_lto_p && !at_end) ; else if (VAR_P (decl) && !DECL_EXTERNAL (decl) && TREE_STATIC (decl)) varpool_node::get_create (decl); /* Generate early debug for global variables. Any local variables will be handled by either handling reachable functions from finalize_compilation_unit (and by consequence, locally scoped symbols), or by rest_of_type_compilation below. Also, pick up function prototypes, which will be mostly ignored by the different early_global_decl() hooks, but will at least be used by Go's hijack of the debug_hooks to implement -fdump-go-spec. */ if (!in_lto_p && (TREE_CODE (decl) != FUNCTION_DECL /* This will pick up function prototypes with no bodies, which are not visible in finalize_compilation_unit() while iterating with FOR_EACH_*_FUNCTION through the symbol table. */ || !DECL_SAVED_TREE (decl)) /* We need to check both decl_function_context and current_function_decl here to make sure local extern declarations end up with the correct context. For local extern declarations, decl_function_context is empty, but current_function_decl is set to the function where the extern was declared . Without the check for !current_function_decl below, the local extern ends up incorrectly with a top-level context. For example: namespace S { int f() { { int i = 42; { extern int i; // Local extern declaration. return i; } } } } */ && !decl_function_context (decl) && !current_function_decl && DECL_SOURCE_LOCATION (decl) != BUILTINS_LOCATION && (!decl_type_context (decl) /* If we created a varpool node for the decl make sure to call early_global_decl. Otherwise we miss changes introduced by member definitions like struct A { static int staticdatamember; }; int A::staticdatamember; and thus have incomplete early debug and late debug called from varpool node removal fails to handle it properly. */ || (finalize && VAR_P (decl) && TREE_STATIC (decl) && !DECL_EXTERNAL (decl))) /* Avoid confusing the debug information machinery when there are errors. */ && !seen_error ()) (*debug_hooks->early_global_decl) (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 (seen_error ()) return; timevar_push (TV_SYMOUT); debug_hooks->type_decl (TYPE_STUB_DECL (type), !toplev); timevar_pop (TV_SYMOUT); } void pass_manager:: finish_optimization_passes (void) { int i; struct dump_file_info *dfi; char *name; gcc::dump_manager *dumps = m_ctxt->get_dumps (); timevar_push (TV_DUMP); if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) { dumps->dump_start (pass_profile_1->static_pass_number, NULL); end_branch_prob (); dumps->dump_finish (pass_profile_1->static_pass_number); } if (optimize > 0) { dumps->dump_start (pass_profile_1->static_pass_number, NULL); print_combine_total_stats (); dumps->dump_finish (pass_profile_1->static_pass_number); } /* Do whatever is necessary to finish printing the graphs. */ for (i = TDI_end; (dfi = dumps->get_dump_file_info (i)) != NULL; ++i) if (dfi->graph_dump_initialized) { name = dumps->get_dump_file_name (dfi); finish_graph_dump_file (name); free (name); } timevar_pop (TV_DUMP); } static unsigned int execute_build_ssa_passes (void) { /* Once this pass (and its sub-passes) are complete, all functions will be in SSA form. Technically this state change is happening a tad early, since the sub-passes have not yet run, but since none of the sub-passes are IPA passes and do not create new functions, this is ok. We're setting this value for the benefit of IPA passes that follow. */ if (symtab->state < IPA_SSA) symtab->state = IPA_SSA; return 0; } namespace { const pass_data pass_data_build_ssa_passes = { SIMPLE_IPA_PASS, /* type */ "build_ssa_passes", /* name */ OPTGROUP_NONE, /* optinfo_flags */ TV_EARLY_LOCAL, /* tv_id */ 0, /* properties_required */ 0, /* properties_provided */ 0, /* properties_destroyed */ 0, /* todo_flags_start */ /* todo_flags_finish is executed before subpases. For this reason it makes no sense to remove unreachable functions here. */ 0, /* todo_flags_finish */ }; class pass_build_ssa_passes : public simple_ipa_opt_pass { public: pass_build_ssa_passes (gcc::context *ctxt) : simple_ipa_opt_pass (pass_data_build_ssa_passes, ctxt) {} /* opt_pass methods: */ virtual bool gate (function *) { /* Don't bother doing anything if the program has errors. */ return (!seen_error () && !in_lto_p); } virtual unsigned int execute (function *) { return execute_build_ssa_passes (); } }; // class pass_build_ssa_passes const pass_data pass_data_chkp_instrumentation_passes = { SIMPLE_IPA_PASS, /* type */ "chkp_passes", /* name */ OPTGROUP_NONE, /* optinfo_flags */ TV_NONE, /* tv_id */ 0, /* properties_required */ 0, /* properties_provided */ 0, /* properties_destroyed */ 0, /* todo_flags_start */ 0, /* todo_flags_finish */ }; class pass_chkp_instrumentation_passes : public simple_ipa_opt_pass { public: pass_chkp_instrumentation_passes (gcc::context *ctxt) : simple_ipa_opt_pass (pass_data_chkp_instrumentation_passes, ctxt) {} /* opt_pass methods: */ virtual bool gate (function *) { /* Don't bother doing anything if the program has errors. */ return (flag_check_pointer_bounds && !seen_error () && !in_lto_p); } }; // class pass_chkp_instrumentation_passes const pass_data pass_data_local_optimization_passes = { SIMPLE_IPA_PASS, /* type */ "opt_local_passes", /* name */ OPTGROUP_NONE, /* optinfo_flags */ TV_NONE, /* tv_id */ 0, /* properties_required */ 0, /* properties_provided */ 0, /* properties_destroyed */ 0, /* todo_flags_start */ 0, /* todo_flags_finish */ }; class pass_local_optimization_passes : public simple_ipa_opt_pass { public: pass_local_optimization_passes (gcc::context *ctxt) : simple_ipa_opt_pass (pass_data_local_optimization_passes, ctxt) {} /* opt_pass methods: */ virtual bool gate (function *) { /* Don't bother doing anything if the program has errors. */ return (!seen_error () && !in_lto_p); } }; // class pass_local_optimization_passes } // anon namespace simple_ipa_opt_pass * make_pass_build_ssa_passes (gcc::context *ctxt) { return new pass_build_ssa_passes (ctxt); } simple_ipa_opt_pass * make_pass_chkp_instrumentation_passes (gcc::context *ctxt) { return new pass_chkp_instrumentation_passes (ctxt); } simple_ipa_opt_pass * make_pass_local_optimization_passes (gcc::context *ctxt) { return new pass_local_optimization_passes (ctxt); } namespace { const pass_data pass_data_all_early_optimizations = { GIMPLE_PASS, /* type */ "early_optimizations", /* name */ OPTGROUP_NONE, /* optinfo_flags */ TV_NONE, /* tv_id */ 0, /* properties_required */ 0, /* properties_provided */ 0, /* properties_destroyed */ 0, /* todo_flags_start */ 0, /* todo_flags_finish */ }; class pass_all_early_optimizations : public gimple_opt_pass { public: pass_all_early_optimizations (gcc::context *ctxt) : gimple_opt_pass (pass_data_all_early_optimizations, ctxt) {} /* opt_pass methods: */ virtual bool gate (function *) { return (optimize >= 1 /* Don't bother doing anything if the program has errors. */ && !seen_error ()); } }; // class pass_all_early_optimizations } // anon namespace static gimple_opt_pass * make_pass_all_early_optimizations (gcc::context *ctxt) { return new pass_all_early_optimizations (ctxt); } namespace { const pass_data pass_data_all_optimizations = { GIMPLE_PASS, /* type */ "*all_optimizations", /* name */ OPTGROUP_NONE, /* optinfo_flags */ TV_OPTIMIZE, /* tv_id */ 0, /* properties_required */ 0, /* properties_provided */ 0, /* properties_destroyed */ 0, /* todo_flags_start */ 0, /* todo_flags_finish */ }; class pass_all_optimizations : public gimple_opt_pass { public: pass_all_optimizations (gcc::context *ctxt) : gimple_opt_pass (pass_data_all_optimizations, ctxt) {} /* opt_pass methods: */ virtual bool gate (function *) { return optimize >= 1 && !optimize_debug; } }; // class pass_all_optimizations } // anon namespace static gimple_opt_pass * make_pass_all_optimizations (gcc::context *ctxt) { return new pass_all_optimizations (ctxt); } namespace { const pass_data pass_data_all_optimizations_g = { GIMPLE_PASS, /* type */ "*all_optimizations_g", /* name */ OPTGROUP_NONE, /* optinfo_flags */ TV_OPTIMIZE, /* tv_id */ 0, /* properties_required */ 0, /* properties_provided */ 0, /* properties_destroyed */ 0, /* todo_flags_start */ 0, /* todo_flags_finish */ }; class pass_all_optimizations_g : public gimple_opt_pass { public: pass_all_optimizations_g (gcc::context *ctxt) : gimple_opt_pass (pass_data_all_optimizations_g, ctxt) {} /* opt_pass methods: */ virtual bool gate (function *) { return optimize >= 1 && optimize_debug; } }; // class pass_all_optimizations_g } // anon namespace static gimple_opt_pass * make_pass_all_optimizations_g (gcc::context *ctxt) { return new pass_all_optimizations_g (ctxt); } namespace { const pass_data pass_data_rest_of_compilation = { RTL_PASS, /* type */ "*rest_of_compilation", /* name */ OPTGROUP_NONE, /* optinfo_flags */ TV_REST_OF_COMPILATION, /* tv_id */ PROP_rtl, /* properties_required */ 0, /* properties_provided */ 0, /* properties_destroyed */ 0, /* todo_flags_start */ 0, /* todo_flags_finish */ }; class pass_rest_of_compilation : public rtl_opt_pass { public: pass_rest_of_compilation (gcc::context *ctxt) : rtl_opt_pass (pass_data_rest_of_compilation, ctxt) {} /* opt_pass methods: */ virtual bool gate (function *) { /* 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 || seen_error ()); } }; // class pass_rest_of_compilation } // anon namespace static rtl_opt_pass * make_pass_rest_of_compilation (gcc::context *ctxt) { return new pass_rest_of_compilation (ctxt); } namespace { const pass_data pass_data_postreload = { RTL_PASS, /* type */ "*all-postreload", /* name */ OPTGROUP_NONE, /* optinfo_flags */ TV_POSTRELOAD, /* tv_id */ PROP_rtl, /* properties_required */ 0, /* properties_provided */ 0, /* properties_destroyed */ 0, /* todo_flags_start */ 0, /* todo_flags_finish */ }; class pass_postreload : public rtl_opt_pass { public: pass_postreload (gcc::context *ctxt) : rtl_opt_pass (pass_data_postreload, ctxt) {} /* opt_pass methods: */ virtual bool gate (function *) { return reload_completed; } }; // class pass_postreload } // anon namespace static rtl_opt_pass * make_pass_postreload (gcc::context *ctxt) { return new pass_postreload (ctxt); } namespace { const pass_data pass_data_late_compilation = { RTL_PASS, /* type */ "*all-late_compilation", /* name */ OPTGROUP_NONE, /* optinfo_flags */ TV_LATE_COMPILATION, /* tv_id */ PROP_rtl, /* properties_required */ 0, /* properties_provided */ 0, /* properties_destroyed */ 0, /* todo_flags_start */ 0, /* todo_flags_finish */ }; class pass_late_compilation : public rtl_opt_pass { public: pass_late_compilation (gcc::context *ctxt) : rtl_opt_pass (pass_data_late_compilation, ctxt) {} /* opt_pass methods: */ virtual bool gate (function *) { return reload_completed || targetm.no_register_allocation; } }; // class pass_late_compilation } // anon namespace static rtl_opt_pass * make_pass_late_compilation (gcc::context *ctxt) { return new pass_late_compilation (ctxt); } /* Set the static pass number of pass PASS to ID and record that in the mapping from static pass number to pass. */ void pass_manager:: set_pass_for_id (int id, opt_pass *pass) { pass->static_pass_number = id; if (passes_by_id_size <= id) { passes_by_id = XRESIZEVEC (opt_pass *, passes_by_id, id + 1); memset (passes_by_id + passes_by_id_size, 0, (id + 1 - passes_by_id_size) * sizeof (void *)); passes_by_id_size = id + 1; } passes_by_id[id] = pass; } /* Return the pass with the static pass number ID. */ opt_pass * pass_manager::get_pass_for_id (int id) const { if (id >= passes_by_id_size) return NULL; return passes_by_id[id]; } /* 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. */ void register_one_dump_file (opt_pass *pass) { g->get_passes ()->register_one_dump_file (pass); } void pass_manager::register_one_dump_file (opt_pass *pass) { char *dot_name, *flag_name, *glob_name; const char *name, *full_name, *prefix; /* Buffer big enough to format a 32-bit UINT_MAX into. */ char num[11]; int flags, id; int optgroup_flags = OPTGROUP_NONE; gcc::dump_manager *dumps = m_ctxt->get_dumps (); /* See below in next_pass_1. */ num[0] = '\0'; if (pass->static_pass_number != -1) sprintf (num, "%u", ((int) pass->static_pass_number < 0 ? 1 : pass->static_pass_number)); /* The name is both used to identify the pass for the purposes of plugins, and to specify dump file name and option. The latter two might want something short which is not quite unique; for that reason, we may have a disambiguating prefix, followed by a space to mark the start of the following dump file name / option string. */ name = strchr (pass->name, ' '); name = name ? name + 1 : pass->name; dot_name = concat (".", name, num, NULL); if (pass->type == SIMPLE_IPA_PASS || pass->type == IPA_PASS) { prefix = "ipa-"; flags = TDF_IPA; optgroup_flags |= OPTGROUP_IPA; } else if (pass->type == GIMPLE_PASS) { prefix = "tree-"; flags = TDF_TREE; } else { prefix = "rtl-"; flags = TDF_RTL; } flag_name = concat (prefix, name, num, NULL); glob_name = concat (prefix, name, NULL); optgroup_flags |= pass->optinfo_flags; /* For any passes that do not have an optgroup set, and which are not IPA passes setup above, set the optgroup to OPTGROUP_OTHER so that any dump messages are emitted properly under -fopt-info(-optall). */ if (optgroup_flags == OPTGROUP_NONE) optgroup_flags = OPTGROUP_OTHER; id = dumps->dump_register (dot_name, flag_name, glob_name, flags, optgroup_flags, true); set_pass_for_id (id, pass); full_name = concat (prefix, pass->name, num, NULL); register_pass_name (pass, full_name); free (CONST_CAST (char *, full_name)); } /* Register the dump files for the pass_manager starting at PASS. */ void pass_manager::register_dump_files (opt_pass *pass) { do { if (pass->name && pass->name[0] != '*') register_one_dump_file (pass); if (pass->sub) register_dump_files (pass->sub); pass = pass->next; } while (pass); } /* Register PASS with NAME. */ void pass_manager::register_pass_name (opt_pass *pass, const char *name) { if (!m_name_to_pass_map) m_name_to_pass_map = new hash_map (256); if (m_name_to_pass_map->get (name)) return; /* Ignore plugin passes. */ const char *unique_name = xstrdup (name); m_name_to_pass_map->put (unique_name, pass); } /* Map from pass id to canonicalized pass name. */ typedef const char *char_ptr; static vec pass_tab; /* Callback function for traversing NAME_TO_PASS_MAP. */ bool passes_pass_traverse (const char *const &name, opt_pass *const &pass, void *) { gcc_assert (pass->static_pass_number > 0); gcc_assert (pass_tab.exists ()); pass_tab[pass->static_pass_number] = name; return 1; } /* The function traverses NAME_TO_PASS_MAP and creates a pass info table for dumping purpose. */ void pass_manager::create_pass_tab (void) const { if (!flag_dump_passes) return; pass_tab.safe_grow_cleared (passes_by_id_size + 1); m_name_to_pass_map->traverse (NULL); } static bool override_gate_status (opt_pass *, tree, bool); /* Dump the instantiated name for PASS. IS_ON indicates if PASS is turned on or not. */ static void dump_one_pass (opt_pass *pass, int pass_indent) { int indent = 3 * pass_indent; const char *pn; bool is_on, is_really_on; is_on = pass->gate (cfun); is_really_on = override_gate_status (pass, current_function_decl, is_on); if (pass->static_pass_number <= 0) pn = pass->name; else pn = pass_tab[pass->static_pass_number]; fprintf (stderr, "%*s%-40s%*s:%s%s\n", indent, " ", pn, (15 - indent < 0 ? 0 : 15 - indent), " ", is_on ? " ON" : " OFF", ((!is_on) == (!is_really_on) ? "" : (is_really_on ? " (FORCED_ON)" : " (FORCED_OFF)"))); } /* Dump pass list PASS with indentation INDENT. */ static void dump_pass_list (opt_pass *pass, int indent) { do { dump_one_pass (pass, indent); if (pass->sub) dump_pass_list (pass->sub, indent + 1); pass = pass->next; } while (pass); } /* Dump all optimization passes. */ void dump_passes (void) { g->get_passes ()->dump_passes (); } void pass_manager::dump_passes () const { push_dummy_function (true); create_pass_tab (); dump_pass_list (all_lowering_passes, 1); dump_pass_list (all_small_ipa_passes, 1); dump_pass_list (all_regular_ipa_passes, 1); dump_pass_list (all_late_ipa_passes, 1); dump_pass_list (all_passes, 1); pop_dummy_function (); } /* Returns the pass with NAME. */ opt_pass * pass_manager::get_pass_by_name (const char *name) { opt_pass **p = m_name_to_pass_map->get (name); if (p) return *p; return NULL; } /* Range [start, last]. */ struct uid_range { unsigned int start; unsigned int last; const char *assem_name; struct uid_range *next; }; typedef struct uid_range *uid_range_p; static vec enabled_pass_uid_range_tab; static vec disabled_pass_uid_range_tab; /* Parse option string for -fdisable- and -fenable- The syntax of the options: -fenable- -fdisable- -fenable-=s1:e1,s2:e2,... -fdisable-=s1:e1,s2:e2,... */ static void enable_disable_pass (const char *arg, bool is_enable) { opt_pass *pass; char *range_str, *phase_name; char *argstr = xstrdup (arg); vec *tab = 0; range_str = strchr (argstr,'='); if (range_str) { *range_str = '\0'; range_str++; } phase_name = argstr; if (!*phase_name) { if (is_enable) error ("unrecognized option -fenable"); else error ("unrecognized option -fdisable"); free (argstr); return; } pass = g->get_passes ()->get_pass_by_name (phase_name); if (!pass || pass->static_pass_number == -1) { if (is_enable) error ("unknown pass %s specified in -fenable", phase_name); else error ("unknown pass %s specified in -fdisable", phase_name); free (argstr); return; } if (is_enable) tab = &enabled_pass_uid_range_tab; else tab = &disabled_pass_uid_range_tab; if ((unsigned) pass->static_pass_number >= tab->length ()) tab->safe_grow_cleared (pass->static_pass_number + 1); if (!range_str) { uid_range_p slot; uid_range_p new_range = XCNEW (struct uid_range); new_range->start = 0; new_range->last = (unsigned)-1; slot = (*tab)[pass->static_pass_number]; new_range->next = slot; (*tab)[pass->static_pass_number] = new_range; if (is_enable) inform (UNKNOWN_LOCATION, "enable pass %s for functions in the range " "of [%u, %u]", phase_name, new_range->start, new_range->last); else inform (UNKNOWN_LOCATION, "disable pass %s for functions in the range " "of [%u, %u]", phase_name, new_range->start, new_range->last); } else { char *next_range = NULL; char *one_range = range_str; char *end_val = NULL; do { uid_range_p slot; uid_range_p new_range; char *invalid = NULL; long start; char *func_name = NULL; next_range = strchr (one_range, ','); if (next_range) { *next_range = '\0'; next_range++; } end_val = strchr (one_range, ':'); if (end_val) { *end_val = '\0'; end_val++; } start = strtol (one_range, &invalid, 10); if (*invalid || start < 0) { if (end_val || (one_range[0] >= '0' && one_range[0] <= '9')) { error ("Invalid range %s in option %s", one_range, is_enable ? "-fenable" : "-fdisable"); free (argstr); return; } func_name = one_range; } if (!end_val) { new_range = XCNEW (struct uid_range); if (!func_name) { new_range->start = (unsigned) start; new_range->last = (unsigned) start; } else { new_range->start = (unsigned) -1; new_range->last = (unsigned) -1; new_range->assem_name = xstrdup (func_name); } } else { long last = strtol (end_val, &invalid, 10); if (*invalid || last < start) { error ("Invalid range %s in option %s", end_val, is_enable ? "-fenable" : "-fdisable"); free (argstr); return; } new_range = XCNEW (struct uid_range); new_range->start = (unsigned) start; new_range->last = (unsigned) last; } slot = (*tab)[pass->static_pass_number]; new_range->next = slot; (*tab)[pass->static_pass_number] = new_range; if (is_enable) { if (new_range->assem_name) inform (UNKNOWN_LOCATION, "enable pass %s for function %s", phase_name, new_range->assem_name); else inform (UNKNOWN_LOCATION, "enable pass %s for functions in the range of [%u, %u]", phase_name, new_range->start, new_range->last); } else { if (new_range->assem_name) inform (UNKNOWN_LOCATION, "disable pass %s for function %s", phase_name, new_range->assem_name); else inform (UNKNOWN_LOCATION, "disable pass %s for functions in the range of [%u, %u]", phase_name, new_range->start, new_range->last); } one_range = next_range; } while (next_range); } free (argstr); } /* Enable pass specified by ARG. */ void enable_pass (const char *arg) { enable_disable_pass (arg, true); } /* Disable pass specified by ARG. */ void disable_pass (const char *arg) { enable_disable_pass (arg, false); } /* Returns true if PASS is explicitly enabled/disabled for FUNC. */ static bool is_pass_explicitly_enabled_or_disabled (opt_pass *pass, tree func, vec tab) { uid_range_p slot, range; int cgraph_uid; const char *aname = NULL; if (!tab.exists () || (unsigned) pass->static_pass_number >= tab.length () || pass->static_pass_number == -1) return false; slot = tab[pass->static_pass_number]; if (!slot) return false; cgraph_uid = func ? cgraph_node::get (func)->uid : 0; if (func && DECL_ASSEMBLER_NAME_SET_P (func)) aname = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (func)); range = slot; while (range) { if ((unsigned) cgraph_uid >= range->start && (unsigned) cgraph_uid <= range->last) return true; if (range->assem_name && aname && !strcmp (range->assem_name, aname)) return true; range = range->next; } return false; } /* Update static_pass_number for passes (and the flag TODO_mark_first_instance). Passes are constructed with static_pass_number preinitialized to 0 This field is used in two different ways: initially as instance numbers of their kind, and then as ids within the entire pass manager. Within pass_manager::pass_manager: * In add_pass_instance(), as called by next_pass_1 in NEXT_PASS in init_optimization_passes * When the initial instance of a pass within a pass manager is seen, it is flagged, and its static_pass_number is set to -1 * On subsequent times that it is seen, the static pass number is decremented each time, so that if there are e.g. 4 dups, they have static_pass_number -4, 2, 3, 4 respectively (note how the initial one is negative and gives the count); these can be thought of as instance numbers of the specific pass * Within the register_dump_files () traversal, set_pass_for_id() is called on each pass, using these instance numbers to create dumpfile switches, and then overwriting them with a pass id, which are global to the whole pass manager (based on (TDI_end + current value of extra_dump_files_in_use) ) */ static void add_pass_instance (opt_pass *new_pass, bool track_duplicates, opt_pass *initial_pass) { /* Are we dealing with the first pass of its kind, or a clone? */ if (new_pass != initial_pass) { /* We're dealing with a clone. */ new_pass->todo_flags_start &= ~TODO_mark_first_instance; /* 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 ((new_pass->name && new_pass->name[0] != '*') || track_duplicates) { initial_pass->static_pass_number -= 1; new_pass->static_pass_number = -initial_pass->static_pass_number; } } else { /* We're dealing with the first pass of its kind. */ new_pass->todo_flags_start |= TODO_mark_first_instance; new_pass->static_pass_number = -1; invoke_plugin_callbacks (PLUGIN_NEW_PASS, new_pass); } } /* Add a pass to the pass list. Duplicate the pass if it's already in the list. */ static opt_pass ** next_pass_1 (opt_pass **list, opt_pass *pass, opt_pass *initial_pass) { /* Every pass should have a name so that plugins can refer to them. */ gcc_assert (pass->name != NULL); add_pass_instance (pass, false, initial_pass); *list = pass; return &(*list)->next; } /* List node for an inserted pass instance. We need to keep track of all the newly-added pass instances (with 'added_pass_nodes' defined below) so that we can register their dump files after pass-positioning is finished. Registering dumping files needs to be post-processed or the static_pass_number of the opt_pass object would be modified and mess up the dump file names of future pass instances to be added. */ struct pass_list_node { opt_pass *pass; struct pass_list_node *next; }; static struct pass_list_node *added_pass_nodes = NULL; static struct pass_list_node *prev_added_pass_node; /* Insert the pass at the proper position. Return true if the pass is successfully added. NEW_PASS_INFO - new pass to be inserted PASS_LIST - root of the pass list to insert the new pass to */ static bool position_pass (struct register_pass_info *new_pass_info, opt_pass **pass_list) { opt_pass *pass = *pass_list, *prev_pass = NULL; bool success = false; for ( ; pass; prev_pass = pass, pass = pass->next) { /* Check if the current pass is of the same type as the new pass and matches the name and the instance number of the reference pass. */ if (pass->type == new_pass_info->pass->type && pass->name && !strcmp (pass->name, new_pass_info->reference_pass_name) && ((new_pass_info->ref_pass_instance_number == 0) || (new_pass_info->ref_pass_instance_number == pass->static_pass_number) || (new_pass_info->ref_pass_instance_number == 1 && pass->todo_flags_start & TODO_mark_first_instance))) { opt_pass *new_pass; struct pass_list_node *new_pass_node; if (new_pass_info->ref_pass_instance_number == 0) { new_pass = new_pass_info->pass->clone (); add_pass_instance (new_pass, true, new_pass_info->pass); } else { new_pass = new_pass_info->pass; add_pass_instance (new_pass, true, new_pass); } /* Insert the new pass instance based on the positioning op. */ switch (new_pass_info->pos_op) { case PASS_POS_INSERT_AFTER: new_pass->next = pass->next; pass->next = new_pass; /* Skip newly inserted pass to avoid repeated insertions in the case where the new pass and the existing one have the same name. */ pass = new_pass; break; case PASS_POS_INSERT_BEFORE: new_pass->next = pass; if (prev_pass) prev_pass->next = new_pass; else *pass_list = new_pass; break; case PASS_POS_REPLACE: new_pass->next = pass->next; if (prev_pass) prev_pass->next = new_pass; else *pass_list = new_pass; new_pass->sub = pass->sub; new_pass->tv_id = pass->tv_id; pass = new_pass; break; default: error ("invalid pass positioning operation"); return false; } /* Save the newly added pass (instance) in the added_pass_nodes list so that we can register its dump file later. Note that we cannot register the dump file now because doing so will modify the static_pass_number of the opt_pass object and therefore mess up the dump file name of future instances. */ new_pass_node = XCNEW (struct pass_list_node); new_pass_node->pass = new_pass; if (!added_pass_nodes) added_pass_nodes = new_pass_node; else prev_added_pass_node->next = new_pass_node; prev_added_pass_node = new_pass_node; success = true; } if (pass->sub && position_pass (new_pass_info, &pass->sub)) success = true; } return success; } /* Hooks a new pass into the pass lists. PASS_INFO - pass information that specifies the opt_pass object, reference pass, instance number, and how to position the pass */ void register_pass (struct register_pass_info *pass_info) { g->get_passes ()->register_pass (pass_info); } void register_pass (opt_pass* pass, pass_positioning_ops pos, const char* ref_pass_name, int ref_pass_inst_number) { register_pass_info i; i.pass = pass; i.reference_pass_name = ref_pass_name; i.ref_pass_instance_number = ref_pass_inst_number; i.pos_op = pos; g->get_passes ()->register_pass (&i); } void pass_manager::register_pass (struct register_pass_info *pass_info) { bool all_instances, success; gcc::dump_manager *dumps = m_ctxt->get_dumps (); /* The checks below could fail in buggy plugins. Existing GCC passes should never fail these checks, so we mention plugin in the messages. */ if (!pass_info->pass) fatal_error (input_location, "plugin cannot register a missing pass"); if (!pass_info->pass->name) fatal_error (input_location, "plugin cannot register an unnamed pass"); if (!pass_info->reference_pass_name) fatal_error (input_location, "plugin cannot register pass %qs without reference pass name", pass_info->pass->name); /* Try to insert the new pass to the pass lists. We need to check all five lists as the reference pass could be in one (or all) of them. */ all_instances = pass_info->ref_pass_instance_number == 0; success = position_pass (pass_info, &all_lowering_passes); if (!success || all_instances) success |= position_pass (pass_info, &all_small_ipa_passes); if (!success || all_instances) success |= position_pass (pass_info, &all_regular_ipa_passes); if (!success || all_instances) success |= position_pass (pass_info, &all_late_ipa_passes); if (!success || all_instances) success |= position_pass (pass_info, &all_passes); if (!success) fatal_error (input_location, "pass %qs not found but is referenced by new pass %qs", pass_info->reference_pass_name, pass_info->pass->name); /* OK, we have successfully inserted the new pass. We need to register the dump files for the newly added pass and its duplicates (if any). Because the registration of plugin/backend passes happens after the command-line options are parsed, the options that specify single pass dumping (e.g. -fdump-tree-PASSNAME) cannot be used for new passes. Therefore we currently can only enable dumping of new passes when the 'dump-all' flags (e.g. -fdump-tree-all) are specified. While doing so, we also delete the pass_list_node objects created during pass positioning. */ while (added_pass_nodes) { struct pass_list_node *next_node = added_pass_nodes->next; enum tree_dump_index tdi; register_one_dump_file (added_pass_nodes->pass); if (added_pass_nodes->pass->type == SIMPLE_IPA_PASS || added_pass_nodes->pass->type == IPA_PASS) tdi = TDI_ipa_all; else if (added_pass_nodes->pass->type == GIMPLE_PASS) tdi = TDI_tree_all; else tdi = TDI_rtl_all; /* Check if dump-all flag is specified. */ if (dumps->get_dump_file_info (tdi)->pstate) { dumps->get_dump_file_info (added_pass_nodes->pass->static_pass_number) ->pstate = dumps->get_dump_file_info (tdi)->pstate; dumps->get_dump_file_info (added_pass_nodes->pass->static_pass_number) ->pflags = dumps->get_dump_file_info (tdi)->pflags; } XDELETE (added_pass_nodes); added_pass_nodes = next_node; } } /* Construct the pass tree. The sequencing of passes is driven by the cgraph routines: 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, compile is then invoked: compile () ipa_passes () -> all_small_ipa_passes -> Analysis of all_regular_ipa_passes * possible LTO streaming at copmilation time * -> Execution of all_regular_ipa_passes * possible LTO streaming at link time * -> all_late_ipa_passes expand_all_functions () for each node N in the cgraph expand_function (N) -> Transformation of all_regular_ipa_passes -> all_passes */ void * pass_manager::operator new (size_t sz) { /* Ensure that all fields of the pass manager are zero-initialized. */ return xcalloc (1, sz); } void pass_manager::operator delete (void *ptr) { free (ptr); } pass_manager::pass_manager (context *ctxt) : all_passes (NULL), all_small_ipa_passes (NULL), all_lowering_passes (NULL), all_regular_ipa_passes (NULL), all_late_ipa_passes (NULL), passes_by_id (NULL), passes_by_id_size (0), m_ctxt (ctxt) { opt_pass **p; /* Initialize the pass_lists array. */ #define DEF_PASS_LIST(LIST) pass_lists[PASS_LIST_NO_##LIST] = &LIST; GCC_PASS_LISTS #undef DEF_PASS_LIST /* Build the tree of passes. */ #define INSERT_PASSES_AFTER(PASS) \ { \ opt_pass **p_start; \ p_start = p = &(PASS); #define TERMINATE_PASS_LIST(PASS) \ gcc_assert (p_start == &PASS); \ *p = NULL; \ } #define PUSH_INSERT_PASSES_WITHIN(PASS) \ { \ opt_pass **p = &(PASS ## _1)->sub; #define POP_INSERT_PASSES() \ } #define NEXT_PASS(PASS, NUM) \ do { \ gcc_assert (NULL == PASS ## _ ## NUM); \ if ((NUM) == 1) \ PASS ## _1 = make_##PASS (m_ctxt); \ else \ { \ gcc_assert (PASS ## _1); \ PASS ## _ ## NUM = PASS ## _1->clone (); \ } \ p = next_pass_1 (p, PASS ## _ ## NUM, PASS ## _1); \ } while (0) #define NEXT_PASS_WITH_ARG(PASS, NUM, ARG) \ do { \ NEXT_PASS (PASS, NUM); \ PASS ## _ ## NUM->set_pass_param (0, ARG); \ } while (0) #include "pass-instances.def" #undef INSERT_PASSES_AFTER #undef PUSH_INSERT_PASSES_WITHIN #undef POP_INSERT_PASSES #undef NEXT_PASS #undef NEXT_PASS_WITH_ARG #undef TERMINATE_PASS_LIST /* Register the passes with the tree dump code. */ register_dump_files (all_lowering_passes); register_dump_files (all_small_ipa_passes); register_dump_files (all_regular_ipa_passes); register_dump_files (all_late_ipa_passes); register_dump_files (all_passes); } static void delete_pass_tree (opt_pass *pass) { while (pass) { /* Recurse into child passes. */ delete_pass_tree (pass->sub); opt_pass *next = pass->next; /* Delete this pass. */ delete pass; /* Iterate onto sibling passes. */ pass = next; } } pass_manager::~pass_manager () { XDELETEVEC (passes_by_id); /* Call delete_pass_tree on each of the pass_lists. */ #define DEF_PASS_LIST(LIST) \ delete_pass_tree (*pass_lists[PASS_LIST_NO_##LIST]); GCC_PASS_LISTS #undef DEF_PASS_LIST } /* If we are in IPA mode (i.e., current_function_decl is NULL), call function CALLBACK for every function in the call graph. Otherwise, call CALLBACK on the current function. */ static void do_per_function (void (*callback) (function *, void *data), void *data) { if (current_function_decl) callback (cfun, data); else { struct cgraph_node *node; FOR_EACH_DEFINED_FUNCTION (node) if (node->analyzed && (gimple_has_body_p (node->decl) && !in_lto_p) && (!node->clone_of || node->decl != node->clone_of->decl)) callback (DECL_STRUCT_FUNCTION (node->decl), data); } } /* Because inlining might remove no-longer reachable nodes, we need to keep the array visible to garbage collector to avoid reading collected out nodes. */ static int nnodes; static GTY ((length ("nnodes"))) cgraph_node **order; /* Hook called when NODE is removed and therefore should be excluded from order vector. DATA is an array of integers. DATA[0] holds max index it may be accessed by. For cgraph node DATA[node->uid + 1] holds index of this node in order vector. */ static void remove_cgraph_node_from_order (cgraph_node *node, void *data) { int *order_idx = (int *)data; if (node->uid >= order_idx[0]) return; int idx = order_idx[node->uid + 1]; if (idx >= 0 && idx < nnodes && order[idx] == node) order[idx] = NULL; } /* If we are in IPA mode (i.e., current_function_decl is NULL), call function CALLBACK for every function in the call graph. Otherwise, call CALLBACK on the current function. This function is global so that plugins can use it. */ void do_per_function_toporder (void (*callback) (function *, void *data), void *data) { int i; if (current_function_decl) callback (cfun, data); else { cgraph_node_hook_list *hook; int *order_idx; gcc_assert (!order); order = ggc_vec_alloc (symtab->cgraph_count); order_idx = XALLOCAVEC (int, symtab->cgraph_max_uid + 1); memset (order_idx + 1, -1, sizeof (int) * symtab->cgraph_max_uid); order_idx[0] = symtab->cgraph_max_uid; nnodes = ipa_reverse_postorder (order); for (i = nnodes - 1; i >= 0; i--) { order[i]->process = 1; order_idx[order[i]->uid + 1] = i; } hook = symtab->add_cgraph_removal_hook (remove_cgraph_node_from_order, order_idx); for (i = nnodes - 1; i >= 0; i--) { /* Function could be inlined and removed as unreachable. */ if (!order[i]) continue; struct cgraph_node *node = order[i]; /* Allow possibly removed nodes to be garbage collected. */ order[i] = NULL; node->process = 0; if (node->has_gimple_body_p ()) { struct function *fn = DECL_STRUCT_FUNCTION (node->decl); push_cfun (fn); callback (fn, data); pop_cfun (); } } symtab->remove_cgraph_removal_hook (hook); } ggc_free (order); order = NULL; nnodes = 0; } /* Helper function to perform function body dump. */ static void execute_function_dump (function *fn, void *data) { opt_pass *pass = (opt_pass *)data; if (dump_file) { push_cfun (fn); if (fn->curr_properties & PROP_trees) dump_function_to_file (fn->decl, dump_file, dump_flags); else print_rtl_with_bb (dump_file, get_insns (), dump_flags); /* Flush the file. If verification fails, we won't be able to close the file before aborting. */ fflush (dump_file); if ((fn->curr_properties & PROP_cfg) && (dump_flags & TDF_GRAPH)) { gcc::dump_manager *dumps = g->get_dumps (); struct dump_file_info *dfi = dumps->get_dump_file_info (pass->static_pass_number); if (!dfi->graph_dump_initialized) { clean_graph_dump_file (dump_file_name); dfi->graph_dump_initialized = true; } print_graph_cfg (dump_file_name, fn); } pop_cfun (); } } static struct profile_record *profile_record; /* Do profile consistency book-keeping for the pass with static number INDEX. If SUBPASS is zero, we run _before_ the pass, and if SUBPASS is one, then we run _after_ the pass. RUN is true if the pass really runs, or FALSE if we are only book-keeping on passes that may have selectively disabled themselves on a given function. */ static void check_profile_consistency (int index, int subpass, bool run) { pass_manager *passes = g->get_passes (); if (index == -1) return; if (!profile_record) profile_record = XCNEWVEC (struct profile_record, passes->passes_by_id_size); gcc_assert (index < passes->passes_by_id_size && index >= 0); gcc_assert (subpass < 2); profile_record[index].run |= run; account_profile_record (&profile_record[index], subpass); } /* Output profile consistency. */ void dump_profile_report (void) { g->get_passes ()->dump_profile_report (); } void pass_manager::dump_profile_report () const { int i, j; int last_freq_in = 0, last_count_in = 0, last_freq_out = 0, last_count_out = 0; gcov_type last_time = 0, last_size = 0; double rel_time_change, rel_size_change; int last_reported = 0; if (!profile_record) return; fprintf (stderr, "\nProfile consistency report:\n\n"); fprintf (stderr, "Pass name |mismatch in |mismated out|Overall\n"); fprintf (stderr, " |freq count |freq count |size time\n"); for (i = 0; i < passes_by_id_size; i++) for (j = 0 ; j < 2; j++) if (profile_record[i].run) { if (last_time) rel_time_change = (profile_record[i].time[j] - (double)last_time) * 100 / (double)last_time; else rel_time_change = 0; if (last_size) rel_size_change = (profile_record[i].size[j] - (double)last_size) * 100 / (double)last_size; else rel_size_change = 0; if (profile_record[i].num_mismatched_freq_in[j] != last_freq_in || profile_record[i].num_mismatched_freq_out[j] != last_freq_out || profile_record[i].num_mismatched_count_in[j] != last_count_in || profile_record[i].num_mismatched_count_out[j] != last_count_out || rel_time_change || rel_size_change) { last_reported = i; fprintf (stderr, "%-20s %s", passes_by_id [i]->name, j ? "(after TODO)" : " "); if (profile_record[i].num_mismatched_freq_in[j] != last_freq_in) fprintf (stderr, "| %+5i", profile_record[i].num_mismatched_freq_in[j] - last_freq_in); else fprintf (stderr, "| "); if (profile_record[i].num_mismatched_count_in[j] != last_count_in) fprintf (stderr, " %+5i", profile_record[i].num_mismatched_count_in[j] - last_count_in); else fprintf (stderr, " "); if (profile_record[i].num_mismatched_freq_out[j] != last_freq_out) fprintf (stderr, "| %+5i", profile_record[i].num_mismatched_freq_out[j] - last_freq_out); else fprintf (stderr, "| "); if (profile_record[i].num_mismatched_count_out[j] != last_count_out) fprintf (stderr, " %+5i", profile_record[i].num_mismatched_count_out[j] - last_count_out); else fprintf (stderr, " "); /* Size/time units change across gimple and RTL. */ if (i == pass_expand_1->static_pass_number) fprintf (stderr, "|----------"); else { if (rel_size_change) fprintf (stderr, "| %+8.4f%%", rel_size_change); else fprintf (stderr, "| "); if (rel_time_change) fprintf (stderr, " %+8.4f%%", rel_time_change); } fprintf (stderr, "\n"); last_freq_in = profile_record[i].num_mismatched_freq_in[j]; last_freq_out = profile_record[i].num_mismatched_freq_out[j]; last_count_in = profile_record[i].num_mismatched_count_in[j]; last_count_out = profile_record[i].num_mismatched_count_out[j]; } else if (j && last_reported != i) { last_reported = i; fprintf (stderr, "%-20s ------------| | |\n", passes_by_id [i]->name); } last_time = profile_record[i].time[j]; last_size = profile_record[i].size[j]; } } /* Perform all TODO actions that ought to be done on each function. */ static void execute_function_todo (function *fn, void *data) { bool from_ipa_pass = (cfun == NULL); unsigned int flags = (size_t)data; flags &= ~fn->last_verified; if (!flags) return; push_cfun (fn); /* Always cleanup the CFG before trying to update SSA. */ if (flags & TODO_cleanup_cfg) { cleanup_tree_cfg (); /* 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 (cfun)) flags |= TODO_update_ssa; } if (flags & TODO_update_ssa_any) { unsigned update_flags = flags & TODO_update_ssa_any; update_ssa (update_flags); } if (flag_tree_pta && (flags & TODO_rebuild_alias)) compute_may_aliases (); if (optimize && (flags & TODO_update_address_taken)) execute_update_addresses_taken (); if (flags & TODO_remove_unused_locals) remove_unused_locals (); if (flags & TODO_rebuild_frequencies) rebuild_frequencies (); if (flags & TODO_rebuild_cgraph_edges) cgraph_edge::rebuild_edges (); gcc_assert (dom_info_state (fn, CDI_POST_DOMINATORS) == DOM_NONE); /* If we've seen errors do not bother running any verifiers. */ if (flag_checking && !seen_error ()) { dom_state pre_verify_state = dom_info_state (fn, CDI_DOMINATORS); dom_state pre_verify_pstate = dom_info_state (fn, CDI_POST_DOMINATORS); if (flags & TODO_verify_il) { if (cfun->curr_properties & PROP_trees) { if (cfun->curr_properties & PROP_cfg) /* IPA passes leave stmts to be fixed up, so make sure to not verify stmts really throw. */ verify_gimple_in_cfg (cfun, !from_ipa_pass); else verify_gimple_in_seq (gimple_body (cfun->decl)); } if (cfun->curr_properties & PROP_ssa) /* IPA passes leave stmts to be fixed up, so make sure to not verify SSA operands whose verifier will choke on that. */ verify_ssa (true, !from_ipa_pass); /* IPA passes leave basic-blocks unsplit, so make sure to not trip on that. */ if ((cfun->curr_properties & PROP_cfg) && !from_ipa_pass) verify_flow_info (); if (current_loops && loops_state_satisfies_p (LOOP_CLOSED_SSA)) verify_loop_closed_ssa (false); if (cfun->curr_properties & PROP_rtl) verify_rtl_sharing (); } /* Make sure verifiers don't change dominator state. */ gcc_assert (dom_info_state (fn, CDI_DOMINATORS) == pre_verify_state); gcc_assert (dom_info_state (fn, CDI_POST_DOMINATORS) == pre_verify_pstate); } fn->last_verified = flags & TODO_verify_all; pop_cfun (); /* For IPA passes make sure to release dominator info, it can be computed by non-verifying TODOs. */ if (from_ipa_pass) { free_dominance_info (fn, CDI_DOMINATORS); free_dominance_info (fn, CDI_POST_DOMINATORS); } } /* Perform all TODO actions. */ static void execute_todo (unsigned int flags) { if (flag_checking && cfun && need_ssa_update_p (cfun)) gcc_assert (flags & TODO_update_ssa_any); statistics_fini_pass (); if (flags) do_per_function (execute_function_todo, (void *)(size_t) flags); /* At this point we should not have any unreachable code in the CFG, so it is safe to flush the pending freelist for SSA_NAMES. */ if (cfun && cfun->gimple_df) flush_ssaname_freelist (); /* Always remove functions just as before inlining: IPA passes might be interested to see bodies of extern inline functions that are not inlined to analyze side effects. The full removal is done just at the end of IPA pass queue. */ if (flags & TODO_remove_functions) { gcc_assert (!cfun); symtab->remove_unreachable_nodes (dump_file); } if ((flags & TODO_dump_symtab) && dump_file && !current_function_decl) { gcc_assert (!cfun); symtab_node::dump_table (dump_file); /* Flush the file. If verification fails, we won't be able to close the file before aborting. */ fflush (dump_file); } /* Now that the dumping has been done, we can get rid of the optional df problems. */ if (flags & TODO_df_finish) df_finish_pass ((flags & TODO_df_verify) != 0); } /* Verify invariants that should hold between passes. This is a place to put simple sanity checks. */ static void verify_interpass_invariants (void) { gcc_checking_assert (!fold_deferring_overflow_warnings_p ()); } /* Clear the last verified flag. */ static void clear_last_verified (function *fn, void *data ATTRIBUTE_UNUSED) { fn->last_verified = 0; } /* Helper function. Verify that the properties has been turn into the properties expected by the pass. */ static void verify_curr_properties (function *fn, void *data) { unsigned int props = (size_t)data; gcc_assert ((fn->curr_properties & props) == props); } /* Release dump file name if set. */ static void release_dump_file_name (void) { if (dump_file_name) { free (CONST_CAST (char *, dump_file_name)); dump_file_name = NULL; } } /* Initialize pass dump file. */ /* This is non-static so that the plugins can use it. */ bool pass_init_dump_file (opt_pass *pass) { /* If a dump file name is present, open it if enabled. */ if (pass->static_pass_number != -1) { timevar_push (TV_DUMP); gcc::dump_manager *dumps = g->get_dumps (); bool initializing_dump = !dumps->dump_initialized_p (pass->static_pass_number); release_dump_file_name (); dump_file_name = dumps->get_dump_file_name (pass->static_pass_number); dumps->dump_start (pass->static_pass_number, &dump_flags); if (dump_file && current_function_decl && ! (dump_flags & TDF_GIMPLE)) dump_function_header (dump_file, current_function_decl, dump_flags); if (initializing_dump && dump_file && (dump_flags & TDF_GRAPH) && cfun && (cfun->curr_properties & PROP_cfg)) { clean_graph_dump_file (dump_file_name); struct dump_file_info *dfi = dumps->get_dump_file_info (pass->static_pass_number); dfi->graph_dump_initialized = true; } timevar_pop (TV_DUMP); return initializing_dump; } else return false; } /* Flush PASS dump file. */ /* This is non-static so that plugins can use it. */ void pass_fini_dump_file (opt_pass *pass) { timevar_push (TV_DUMP); /* Flush and close dump file. */ release_dump_file_name (); g->get_dumps ()->dump_finish (pass->static_pass_number); timevar_pop (TV_DUMP); } /* After executing the pass, apply expected changes to the function properties. */ static void update_properties_after_pass (function *fn, void *data) { opt_pass *pass = (opt_pass *) data; fn->curr_properties = (fn->curr_properties | pass->properties_provided) & ~pass->properties_destroyed; } /* Execute summary generation for all of the passes in IPA_PASS. */ void execute_ipa_summary_passes (ipa_opt_pass_d *ipa_pass) { while (ipa_pass) { opt_pass *pass = ipa_pass; /* Execute all of the IPA_PASSes in the list. */ if (ipa_pass->type == IPA_PASS && pass->gate (cfun) && ipa_pass->generate_summary) { pass_init_dump_file (pass); /* If a timevar is present, start it. */ if (pass->tv_id) timevar_push (pass->tv_id); current_pass = pass; ipa_pass->generate_summary (); /* Stop timevar. */ if (pass->tv_id) timevar_pop (pass->tv_id); pass_fini_dump_file (pass); } ipa_pass = (ipa_opt_pass_d *)ipa_pass->next; } } /* Execute IPA_PASS function transform on NODE. */ static void execute_one_ipa_transform_pass (struct cgraph_node *node, ipa_opt_pass_d *ipa_pass) { opt_pass *pass = ipa_pass; unsigned int todo_after = 0; current_pass = pass; if (!ipa_pass->function_transform) return; /* Note that the folders should only create gimple expressions. This is a hack until the new folder is ready. */ in_gimple_form = (cfun && (cfun->curr_properties & PROP_trees)) != 0; pass_init_dump_file (pass); /* If a timevar is present, start it. */ if (pass->tv_id != TV_NONE) timevar_push (pass->tv_id); /* Run pre-pass verification. */ execute_todo (ipa_pass->function_transform_todo_flags_start); /* Do it! */ todo_after = ipa_pass->function_transform (node); if (profile_report && cfun && (cfun->curr_properties & PROP_cfg)) check_profile_consistency (pass->static_pass_number, 0, true); /* Run post-pass cleanup and verification. */ execute_todo (todo_after); verify_interpass_invariants (); if (profile_report && cfun && (cfun->curr_properties & PROP_cfg)) check_profile_consistency (pass->static_pass_number, 1, true); /* Stop timevar. */ if (pass->tv_id != TV_NONE) timevar_pop (pass->tv_id); if (dump_file) do_per_function (execute_function_dump, pass); pass_fini_dump_file (pass); current_pass = NULL; redirect_edge_var_map_empty (); /* Signal this is a suitable GC collection point. */ if (!(todo_after & TODO_do_not_ggc_collect)) ggc_collect (); } /* For the current function, execute all ipa transforms. */ void execute_all_ipa_transforms (void) { struct cgraph_node *node; if (!cfun) return; node = cgraph_node::get (current_function_decl); if (node->ipa_transforms_to_apply.exists ()) { unsigned int i; for (i = 0; i < node->ipa_transforms_to_apply.length (); i++) execute_one_ipa_transform_pass (node, node->ipa_transforms_to_apply[i]); node->ipa_transforms_to_apply.release (); } } /* Check if PASS is explicitly disabled or enabled and return the gate status. FUNC is the function to be processed, and GATE_STATUS is the gate status determined by pass manager by default. */ static bool override_gate_status (opt_pass *pass, tree func, bool gate_status) { bool explicitly_enabled = false; bool explicitly_disabled = false; explicitly_enabled = is_pass_explicitly_enabled_or_disabled (pass, func, enabled_pass_uid_range_tab); explicitly_disabled = is_pass_explicitly_enabled_or_disabled (pass, func, disabled_pass_uid_range_tab); gate_status = !explicitly_disabled && (gate_status || explicitly_enabled); return gate_status; } /* Determine if PASS_NAME matches CRITERION. Not a pure predicate, since it can update CRITERION, to support matching the Nth invocation of a pass. Subroutine of should_skip_pass_p. */ static bool determine_pass_name_match (const char *pass_name, char *criterion) { size_t namelen = strlen (pass_name); if (! strncmp (pass_name, criterion, namelen)) { /* The following supports starting with the Nth invocation of a pass (where N does not necessarily is equal to the dump file suffix). */ if (criterion[namelen] == '\0' || (criterion[namelen] == '1' && criterion[namelen + 1] == '\0')) return true; else { if (criterion[namelen + 1] == '\0') --criterion[namelen]; return false; } } else return false; } /* For skipping passes until "startwith" pass. Return true iff PASS should be skipped. Clear cfun->pass_startwith when encountering the "startwith" pass, so that all subsequent passes are run. */ static bool should_skip_pass_p (opt_pass *pass) { if (!cfun) return false; if (!cfun->pass_startwith) return false; /* For __GIMPLE functions, we have to at least start when we leave SSA. Hence, we need to detect the "expand" pass, and stop skipping when we encounter it. A cheap way to identify "expand" is it to detect the destruction of PROP_ssa. For __RTL functions, we invoke "rest_of_compilation" directly, which is after "expand", and hence we don't reach this conditional. */ if (pass->properties_destroyed & PROP_ssa) { if (!quiet_flag) fprintf (stderr, "starting anyway when leaving SSA: %s\n", pass->name); cfun->pass_startwith = NULL; return false; } if (determine_pass_name_match (pass->name, cfun->pass_startwith)) { if (!quiet_flag) fprintf (stderr, "found starting pass: %s\n", pass->name); cfun->pass_startwith = NULL; return false; } /* For GIMPLE passes, run any property provider (but continue skipping afterwards). We don't want to force running RTL passes that are property providers: "expand" is covered above, and the only pass other than "expand" that provides a property is "into_cfglayout" (PROP_cfglayout), which does too much for a dumped __RTL function. */ if (pass->type == GIMPLE_PASS && pass->properties_provided != 0) return false; /* Don't skip df init; later RTL passes need it. */ if (strstr (pass->name, "dfinit") != NULL) return false; if (!quiet_flag) fprintf (stderr, "skipping pass: %s\n", pass->name); /* If we get here, then we have a "startwith" that we haven't seen yet; skip the pass. */ return true; } /* Skip the given pass, for handling passes before "startwith" in __GIMPLE and__RTL-marked functions. In theory, this ought to be a no-op, but some of the RTL passes need additional processing here. */ static void skip_pass (opt_pass *pass) { /* Pass "reload" sets the global "reload_completed", and many things depend on this (e.g. instructions in .md files). */ if (strcmp (pass->name, "reload") == 0) reload_completed = 1; /* The INSN_ADDRESSES vec is normally set up by shorten_branches; set it up for the benefit of passes that run after this. */ if (strcmp (pass->name, "shorten") == 0) INSN_ADDRESSES_ALLOC (get_max_uid ()); /* Update the cfg hooks as appropriate. */ if (strcmp (pass->name, "into_cfglayout") == 0) { cfg_layout_rtl_register_cfg_hooks (); cfun->curr_properties |= PROP_cfglayout; } if (strcmp (pass->name, "outof_cfglayout") == 0) { rtl_register_cfg_hooks (); cfun->curr_properties &= ~PROP_cfglayout; } } /* Execute PASS. */ bool execute_one_pass (opt_pass *pass) { unsigned int todo_after = 0; bool gate_status; /* IPA passes are executed on whole program, so cfun should be NULL. Other passes need function context set. */ if (pass->type == SIMPLE_IPA_PASS || pass->type == IPA_PASS) gcc_assert (!cfun && !current_function_decl); else gcc_assert (cfun && current_function_decl); current_pass = pass; /* Check whether gate check should be avoided. User controls the value of the gate through the parameter "gate_status". */ gate_status = pass->gate (cfun); gate_status = override_gate_status (pass, current_function_decl, gate_status); /* Override gate with plugin. */ invoke_plugin_callbacks (PLUGIN_OVERRIDE_GATE, &gate_status); if (!gate_status) { /* Run so passes selectively disabling themselves on a given function are not miscounted. */ if (profile_report && cfun && (cfun->curr_properties & PROP_cfg)) { check_profile_consistency (pass->static_pass_number, 0, false); check_profile_consistency (pass->static_pass_number, 1, false); } current_pass = NULL; return false; } if (should_skip_pass_p (pass)) { skip_pass (pass); return true; } /* Pass execution event trigger: useful to identify passes being executed. */ invoke_plugin_callbacks (PLUGIN_PASS_EXECUTION, pass); if (!quiet_flag && !cfun) fprintf (stderr, " <%s>", pass->name ? pass->name : ""); /* Note that the folders should only create gimple expressions. This is a hack until the new folder is ready. */ in_gimple_form = (cfun && (cfun->curr_properties & PROP_trees)) != 0; pass_init_dump_file (pass); /* If a timevar is present, start it. */ if (pass->tv_id != TV_NONE) timevar_push (pass->tv_id); /* Run pre-pass verification. */ execute_todo (pass->todo_flags_start); if (flag_checking) do_per_function (verify_curr_properties, (void *)(size_t)pass->properties_required); /* Do it! */ todo_after = pass->execute (cfun); if (todo_after & TODO_discard_function) { /* Stop timevar. */ if (pass->tv_id != TV_NONE) timevar_pop (pass->tv_id); pass_fini_dump_file (pass); gcc_assert (cfun); /* As cgraph_node::release_body expects release dominators info, we have to release it. */ if (dom_info_available_p (CDI_DOMINATORS)) free_dominance_info (CDI_DOMINATORS); if (dom_info_available_p (CDI_POST_DOMINATORS)) free_dominance_info (CDI_POST_DOMINATORS); tree fn = cfun->decl; pop_cfun (); gcc_assert (!cfun); cgraph_node::get (fn)->release_body (); current_pass = NULL; redirect_edge_var_map_empty (); ggc_collect (); return true; } do_per_function (clear_last_verified, NULL); do_per_function (update_properties_after_pass, pass); if (profile_report && cfun && (cfun->curr_properties & PROP_cfg)) check_profile_consistency (pass->static_pass_number, 0, true); /* Run post-pass cleanup and verification. */ execute_todo (todo_after | pass->todo_flags_finish | TODO_verify_il); if (profile_report && cfun && (cfun->curr_properties & PROP_cfg)) check_profile_consistency (pass->static_pass_number, 1, true); verify_interpass_invariants (); /* Stop timevar. */ if (pass->tv_id != TV_NONE) timevar_pop (pass->tv_id); if (pass->type == IPA_PASS && ((ipa_opt_pass_d *)pass)->function_transform) { struct cgraph_node *node; FOR_EACH_FUNCTION_WITH_GIMPLE_BODY (node) node->ipa_transforms_to_apply.safe_push ((ipa_opt_pass_d *)pass); } else if (dump_file) do_per_function (execute_function_dump, pass); if (!current_function_decl) symtab->process_new_functions (); pass_fini_dump_file (pass); if (pass->type != SIMPLE_IPA_PASS && pass->type != IPA_PASS) gcc_assert (!(cfun->curr_properties & PROP_trees) || pass->type != RTL_PASS); current_pass = NULL; redirect_edge_var_map_empty (); /* Signal this is a suitable GC collection point. */ if (!((todo_after | pass->todo_flags_finish) & TODO_do_not_ggc_collect)) ggc_collect (); return true; } static void execute_pass_list_1 (opt_pass *pass) { do { gcc_assert (pass->type == GIMPLE_PASS || pass->type == RTL_PASS); if (cfun == NULL) return; if (execute_one_pass (pass) && pass->sub) execute_pass_list_1 (pass->sub); pass = pass->next; } while (pass); } void execute_pass_list (function *fn, opt_pass *pass) { gcc_assert (fn == cfun); execute_pass_list_1 (pass); if (cfun && fn->cfg) { free_dominance_info (CDI_DOMINATORS); free_dominance_info (CDI_POST_DOMINATORS); } } /* Write out all LTO data. */ static void write_lto (void) { timevar_push (TV_IPA_LTO_GIMPLE_OUT); lto_output (); timevar_pop (TV_IPA_LTO_GIMPLE_OUT); timevar_push (TV_IPA_LTO_DECL_OUT); produce_asm_for_decls (); timevar_pop (TV_IPA_LTO_DECL_OUT); } /* Same as execute_pass_list but assume that subpasses of IPA passes are local passes. If SET is not NULL, write out summaries of only those node in SET. */ static void ipa_write_summaries_2 (opt_pass *pass, struct lto_out_decl_state *state) { while (pass) { ipa_opt_pass_d *ipa_pass = (ipa_opt_pass_d *)pass; gcc_assert (!current_function_decl); gcc_assert (!cfun); gcc_assert (pass->type == SIMPLE_IPA_PASS || pass->type == IPA_PASS); if (pass->type == IPA_PASS && ipa_pass->write_summary && pass->gate (cfun)) { /* If a timevar is present, start it. */ if (pass->tv_id) timevar_push (pass->tv_id); pass_init_dump_file (pass); current_pass = pass; ipa_pass->write_summary (); pass_fini_dump_file (pass); /* If a timevar is present, start it. */ if (pass->tv_id) timevar_pop (pass->tv_id); } if (pass->sub && pass->sub->type != GIMPLE_PASS) ipa_write_summaries_2 (pass->sub, state); pass = pass->next; } } /* Helper function of ipa_write_summaries. Creates and destroys the decl state and calls ipa_write_summaries_2 for all passes that have summaries. SET is the set of nodes to be written. */ static void ipa_write_summaries_1 (lto_symtab_encoder_t encoder) { pass_manager *passes = g->get_passes (); struct lto_out_decl_state *state = lto_new_out_decl_state (); state->symtab_node_encoder = encoder; lto_output_init_mode_table (); lto_push_out_decl_state (state); gcc_assert (!flag_wpa); ipa_write_summaries_2 (passes->all_regular_ipa_passes, state); write_lto (); gcc_assert (lto_get_out_decl_state () == state); lto_pop_out_decl_state (); lto_delete_out_decl_state (state); } /* Write out summaries for all the nodes in the callgraph. */ void ipa_write_summaries (void) { lto_symtab_encoder_t encoder; int i, order_pos; varpool_node *vnode; struct cgraph_node *node; struct cgraph_node **order; if ((!flag_generate_lto && !flag_generate_offload) || seen_error ()) return; select_what_to_stream (); encoder = lto_symtab_encoder_new (false); /* Create the callgraph set in the same order used in cgraph_expand_all_functions. This mostly facilitates debugging, since it causes the gimple file to be processed in the same order as the source code. */ order = XCNEWVEC (struct cgraph_node *, symtab->cgraph_count); order_pos = ipa_reverse_postorder (order); gcc_assert (order_pos == symtab->cgraph_count); for (i = order_pos - 1; i >= 0; i--) { struct cgraph_node *node = order[i]; if (node->has_gimple_body_p ()) { /* When streaming out references to statements as part of some IPA pass summary, the statements need to have uids assigned and the following does that for all the IPA passes here. Naturally, this ordering then matches the one IPA-passes get in their stmt_fixup hooks. */ push_cfun (DECL_STRUCT_FUNCTION (node->decl)); renumber_gimple_stmt_uids (); pop_cfun (); } if (node->definition && node->need_lto_streaming) lto_set_symtab_encoder_in_partition (encoder, node); } FOR_EACH_DEFINED_FUNCTION (node) if (node->alias && node->need_lto_streaming) lto_set_symtab_encoder_in_partition (encoder, node); FOR_EACH_DEFINED_VARIABLE (vnode) if (vnode->need_lto_streaming) lto_set_symtab_encoder_in_partition (encoder, vnode); ipa_write_summaries_1 (compute_ltrans_boundary (encoder)); free (order); } /* Same as execute_pass_list but assume that subpasses of IPA passes are local passes. If SET is not NULL, write out optimization summaries of only those node in SET. */ static void ipa_write_optimization_summaries_1 (opt_pass *pass, struct lto_out_decl_state *state) { while (pass) { ipa_opt_pass_d *ipa_pass = (ipa_opt_pass_d *)pass; gcc_assert (!current_function_decl); gcc_assert (!cfun); gcc_assert (pass->type == SIMPLE_IPA_PASS || pass->type == IPA_PASS); if (pass->type == IPA_PASS && ipa_pass->write_optimization_summary && pass->gate (cfun)) { /* If a timevar is present, start it. */ if (pass->tv_id) timevar_push (pass->tv_id); pass_init_dump_file (pass); current_pass = pass; ipa_pass->write_optimization_summary (); pass_fini_dump_file (pass); /* If a timevar is present, start it. */ if (pass->tv_id) timevar_pop (pass->tv_id); } if (pass->sub && pass->sub->type != GIMPLE_PASS) ipa_write_optimization_summaries_1 (pass->sub, state); pass = pass->next; } } /* Write all the optimization summaries for the cgraph nodes in SET. If SET is NULL, write out all summaries of all nodes. */ void ipa_write_optimization_summaries (lto_symtab_encoder_t encoder) { struct lto_out_decl_state *state = lto_new_out_decl_state (); lto_symtab_encoder_iterator lsei; state->symtab_node_encoder = encoder; lto_output_init_mode_table (); lto_push_out_decl_state (state); for (lsei = lsei_start_function_in_partition (encoder); !lsei_end_p (lsei); lsei_next_function_in_partition (&lsei)) { struct cgraph_node *node = lsei_cgraph_node (lsei); /* When streaming out references to statements as part of some IPA pass summary, the statements need to have uids assigned. For functions newly born at WPA stage we need to initialize the uids here. */ if (node->definition && gimple_has_body_p (node->decl)) { push_cfun (DECL_STRUCT_FUNCTION (node->decl)); renumber_gimple_stmt_uids (); pop_cfun (); } } gcc_assert (flag_wpa); pass_manager *passes = g->get_passes (); ipa_write_optimization_summaries_1 (passes->all_regular_ipa_passes, state); write_lto (); gcc_assert (lto_get_out_decl_state () == state); lto_pop_out_decl_state (); lto_delete_out_decl_state (state); } /* Same as execute_pass_list but assume that subpasses of IPA passes are local passes. */ static void ipa_read_summaries_1 (opt_pass *pass) { while (pass) { ipa_opt_pass_d *ipa_pass = (ipa_opt_pass_d *) pass; gcc_assert (!current_function_decl); gcc_assert (!cfun); gcc_assert (pass->type == SIMPLE_IPA_PASS || pass->type == IPA_PASS); if (pass->gate (cfun)) { if (pass->type == IPA_PASS && ipa_pass->read_summary) { /* If a timevar is present, start it. */ if (pass->tv_id) timevar_push (pass->tv_id); pass_init_dump_file (pass); current_pass = pass; ipa_pass->read_summary (); pass_fini_dump_file (pass); /* Stop timevar. */ if (pass->tv_id) timevar_pop (pass->tv_id); } if (pass->sub && pass->sub->type != GIMPLE_PASS) ipa_read_summaries_1 (pass->sub); } pass = pass->next; } } /* Read all the summaries for all_regular_ipa_passes. */ void ipa_read_summaries (void) { pass_manager *passes = g->get_passes (); ipa_read_summaries_1 (passes->all_regular_ipa_passes); } /* Same as execute_pass_list but assume that subpasses of IPA passes are local passes. */ static void ipa_read_optimization_summaries_1 (opt_pass *pass) { while (pass) { ipa_opt_pass_d *ipa_pass = (ipa_opt_pass_d *) pass; gcc_assert (!current_function_decl); gcc_assert (!cfun); gcc_assert (pass->type == SIMPLE_IPA_PASS || pass->type == IPA_PASS); if (pass->gate (cfun)) { if (pass->type == IPA_PASS && ipa_pass->read_optimization_summary) { /* If a timevar is present, start it. */ if (pass->tv_id) timevar_push (pass->tv_id); pass_init_dump_file (pass); current_pass = pass; ipa_pass->read_optimization_summary (); pass_fini_dump_file (pass); /* Stop timevar. */ if (pass->tv_id) timevar_pop (pass->tv_id); } if (pass->sub && pass->sub->type != GIMPLE_PASS) ipa_read_optimization_summaries_1 (pass->sub); } pass = pass->next; } } /* Read all the summaries for all_regular_ipa_passes. */ void ipa_read_optimization_summaries (void) { pass_manager *passes = g->get_passes (); ipa_read_optimization_summaries_1 (passes->all_regular_ipa_passes); } /* Same as execute_pass_list but assume that subpasses of IPA passes are local passes. */ void execute_ipa_pass_list (opt_pass *pass) { do { gcc_assert (!current_function_decl); gcc_assert (!cfun); gcc_assert (pass->type == SIMPLE_IPA_PASS || pass->type == IPA_PASS); if (execute_one_pass (pass) && pass->sub) { if (pass->sub->type == GIMPLE_PASS) { invoke_plugin_callbacks (PLUGIN_EARLY_GIMPLE_PASSES_START, NULL); do_per_function_toporder ((void (*)(function *, void *)) execute_pass_list, pass->sub); invoke_plugin_callbacks (PLUGIN_EARLY_GIMPLE_PASSES_END, NULL); } else if (pass->sub->type == SIMPLE_IPA_PASS || pass->sub->type == IPA_PASS) execute_ipa_pass_list (pass->sub); else gcc_unreachable (); } gcc_assert (!current_function_decl); symtab->process_new_functions (); pass = pass->next; } while (pass); } /* Execute stmt fixup hooks of all passes in PASS for NODE and STMTS. */ static void execute_ipa_stmt_fixups (opt_pass *pass, struct cgraph_node *node, gimple **stmts) { while (pass) { /* Execute all of the IPA_PASSes in the list. */ if (pass->type == IPA_PASS && pass->gate (cfun)) { ipa_opt_pass_d *ipa_pass = (ipa_opt_pass_d *) pass; if (ipa_pass->stmt_fixup) { pass_init_dump_file (pass); /* If a timevar is present, start it. */ if (pass->tv_id) timevar_push (pass->tv_id); current_pass = pass; ipa_pass->stmt_fixup (node, stmts); /* Stop timevar. */ if (pass->tv_id) timevar_pop (pass->tv_id); pass_fini_dump_file (pass); } if (pass->sub) execute_ipa_stmt_fixups (pass->sub, node, stmts); } pass = pass->next; } } /* Execute stmt fixup hooks of all IPA passes for NODE and STMTS. */ void execute_all_ipa_stmt_fixups (struct cgraph_node *node, gimple **stmts) { pass_manager *passes = g->get_passes (); execute_ipa_stmt_fixups (passes->all_regular_ipa_passes, node, stmts); } extern void debug_properties (unsigned int); extern void dump_properties (FILE *, unsigned int); DEBUG_FUNCTION void dump_properties (FILE *dump, unsigned int props) { fprintf (dump, "Properties:\n"); if (props & PROP_gimple_any) fprintf (dump, "PROP_gimple_any\n"); if (props & PROP_gimple_lcf) fprintf (dump, "PROP_gimple_lcf\n"); if (props & PROP_gimple_leh) fprintf (dump, "PROP_gimple_leh\n"); if (props & PROP_cfg) fprintf (dump, "PROP_cfg\n"); if (props & PROP_ssa) fprintf (dump, "PROP_ssa\n"); if (props & PROP_no_crit_edges) fprintf (dump, "PROP_no_crit_edges\n"); if (props & PROP_rtl) fprintf (dump, "PROP_rtl\n"); if (props & PROP_gimple_lomp) fprintf (dump, "PROP_gimple_lomp\n"); if (props & PROP_gimple_lomp_dev) fprintf (dump, "PROP_gimple_lomp_dev\n"); if (props & PROP_gimple_lcx) fprintf (dump, "PROP_gimple_lcx\n"); if (props & PROP_gimple_lvec) fprintf (dump, "PROP_gimple_lvec\n"); if (props & PROP_cfglayout) fprintf (dump, "PROP_cfglayout\n"); } DEBUG_FUNCTION void debug_properties (unsigned int props) { dump_properties (stderr, props); } /* Called by local passes to see if function is called by already processed nodes. Because we process nodes in topological order, this means that function is in recursive cycle or we introduced new direct calls. */ bool function_called_by_processed_nodes_p (void) { struct cgraph_edge *e; for (e = cgraph_node::get (current_function_decl)->callers; e; e = e->next_caller) { if (e->caller->decl == current_function_decl) continue; if (!e->caller->has_gimple_body_p ()) continue; if (TREE_ASM_WRITTEN (e->caller->decl)) continue; if (!e->caller->process && !e->caller->global.inlined_to) break; } if (dump_file && e) { fprintf (dump_file, "Already processed call to:\n"); e->caller->dump (dump_file); } return e != NULL; } #include "gt-passes.h"