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authorBen Cheng <bccheng@google.com>2013-03-28 11:14:20 -0700
committerBen Cheng <bccheng@google.com>2013-03-28 12:40:33 -0700
commitaf0c51ac87ab2a87caa03fa108f0d164987a2764 (patch)
tree4b8b470f7c5b69642fdab8d0aa1fbc148d02196b /gcc-4.8/gcc/passes.c
parentd87cae247d39ebf4f5a6bf25c932a14d2fdb9384 (diff)
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[GCC 4.8] Initial check-in of GCC 4.8.0
Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771
Diffstat (limited to 'gcc-4.8/gcc/passes.c')
-rw-r--r--gcc-4.8/gcc/passes.c2812
1 files changed, 2812 insertions, 0 deletions
diff --git a/gcc-4.8/gcc/passes.c b/gcc-4.8/gcc/passes.c
new file mode 100644
index 000000000..8390223e8
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+++ b/gcc-4.8/gcc/passes.c
@@ -0,0 +1,2812 @@
+/* Top level of GCC compilers (cc1, cc1plus, etc.)
+ Copyright (C) 1987-2013 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
+<http://www.gnu.org/licenses/>. */
+
+/* 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 "tm.h"
+#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 "diagnostic-core.h"
+#include "params.h"
+#include "reload.h"
+#include "debug.h"
+#include "target.h"
+#include "langhooks.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"
+#include "df.h"
+#include "predict.h"
+#include "lto-streamer.h"
+#include "plugin.h"
+#include "ipa-utils.h"
+#include "tree-pretty-print.h" /* for dump_function_header */
+
+/* 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. */
+struct opt_pass *current_pass;
+
+static void register_pass_name (struct opt_pass *, const char *);
+
+/* 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;
+bool first_pass_instance;
+
+
+/* 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. */
+ 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. */
+ if (!lookup_attribute ("weakref", DECL_ATTRIBUTES (decl)))
+ DECL_EXTERNAL (decl) = 0;
+ 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))
+ 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))
+ && (TREE_CODE (decl) != VAR_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 (TREE_CODE (decl) != FUNCTION_DECL)
+ varpool_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
+
+ 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 (TREE_CODE (decl) == VAR_DECL && !DECL_EXTERNAL (decl)
+ && TREE_STATIC (decl))
+ varpool_node_for_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
+finish_optimization_passes (void)
+{
+ int i;
+ struct dump_file_info *dfi;
+ char *name;
+
+ timevar_push (TV_DUMP);
+ if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
+ {
+ dump_start (pass_profile.pass.static_pass_number, NULL);
+ end_branch_prob ();
+ dump_finish (pass_profile.pass.static_pass_number);
+ }
+
+ if (optimize > 0)
+ {
+ dump_start (pass_profile.pass.static_pass_number, NULL);
+ print_combine_total_stats ();
+ dump_finish (pass_profile.pass.static_pass_number);
+ }
+
+ /* Do whatever is necessary to finish printing the graphs. */
+ for (i = TDI_end; (dfi = get_dump_file_info (i)) != NULL; ++i)
+ if (dump_initialized_p (i)
+ && (dfi->pflags & TDF_GRAPH) != 0
+ && (name = get_dump_file_name (i)) != NULL)
+ {
+ finish_graph_dump_file (name);
+ free (name);
+ }
+
+ timevar_pop (TV_DUMP);
+}
+
+static unsigned int
+execute_all_early_local_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 (cgraph_state < CGRAPH_STATE_IPA_SSA)
+ cgraph_state = CGRAPH_STATE_IPA_SSA;
+ return 0;
+}
+
+/* Gate: execute, or not, all of the non-trivial optimizations. */
+
+static bool
+gate_all_early_local_passes (void)
+{
+ /* Don't bother doing anything if the program has errors. */
+ return (!seen_error () && !in_lto_p);
+}
+
+struct simple_ipa_opt_pass pass_early_local_passes =
+{
+ {
+ SIMPLE_IPA_PASS,
+ "early_local_cleanups", /* name */
+ OPTGROUP_NONE, /* optinfo_flags */
+ gate_all_early_local_passes, /* gate */
+ execute_all_early_local_passes, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_EARLY_LOCAL, /* tv_id */
+ 0, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ TODO_remove_functions /* todo_flags_finish */
+ }
+};
+
+/* Gate: execute, or not, all of the non-trivial optimizations. */
+
+static bool
+gate_all_early_optimizations (void)
+{
+ return (optimize >= 1
+ /* Don't bother doing anything if the program has errors. */
+ && !seen_error ());
+}
+
+static struct gimple_opt_pass pass_all_early_optimizations =
+{
+ {
+ GIMPLE_PASS,
+ "early_optimizations", /* name */
+ OPTGROUP_NONE, /* optinfo_flags */
+ gate_all_early_optimizations, /* gate */
+ NULL, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_NONE, /* tv_id */
+ 0, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ 0 /* todo_flags_finish */
+ }
+};
+
+/* Gate: execute, or not, all of the non-trivial optimizations. */
+
+static bool
+gate_all_optimizations (void)
+{
+ return optimize >= 1 && !optimize_debug;
+}
+
+static struct gimple_opt_pass pass_all_optimizations =
+{
+ {
+ GIMPLE_PASS,
+ "*all_optimizations", /* name */
+ OPTGROUP_NONE, /* optinfo_flags */
+ gate_all_optimizations, /* gate */
+ NULL, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_OPTIMIZE, /* tv_id */
+ 0, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ 0 /* todo_flags_finish */
+ }
+};
+
+/* Gate: execute, or not, all of the non-trivial optimizations. */
+
+static bool
+gate_all_optimizations_g (void)
+{
+ return optimize >= 1 && optimize_debug;
+}
+
+static struct gimple_opt_pass pass_all_optimizations_g =
+{
+ {
+ GIMPLE_PASS,
+ "*all_optimizations_g", /* name */
+ OPTGROUP_NONE, /* optinfo_flags */
+ gate_all_optimizations_g, /* gate */
+ NULL, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_OPTIMIZE, /* tv_id */
+ 0, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ 0 /* todo_flags_finish */
+ }
+};
+
+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 || seen_error ());
+}
+
+static struct rtl_opt_pass pass_rest_of_compilation =
+{
+ {
+ RTL_PASS,
+ "*rest_of_compilation", /* name */
+ OPTGROUP_NONE, /* optinfo_flags */
+ 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 */
+ }
+};
+
+static bool
+gate_postreload (void)
+{
+ return reload_completed;
+}
+
+static struct rtl_opt_pass pass_postreload =
+{
+ {
+ RTL_PASS,
+ "*all-postreload", /* name */
+ OPTGROUP_NONE, /* optinfo_flags */
+ gate_postreload, /* gate */
+ NULL, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_POSTRELOAD, /* tv_id */
+ PROP_rtl, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ TODO_ggc_collect | TODO_verify_rtl_sharing /* todo_flags_finish */
+ }
+};
+
+
+
+/* The root of the compilation pass tree, once constructed. */
+struct opt_pass *all_passes, *all_small_ipa_passes, *all_lowering_passes,
+ *all_regular_ipa_passes, *all_late_ipa_passes, *all_lto_gen_passes;
+
+/* This is used by plugins, and should also be used in register_pass. */
+#define DEF_PASS_LIST(LIST) &LIST,
+struct opt_pass **gcc_pass_lists[] = { GCC_PASS_LISTS NULL };
+#undef DEF_PASS_LIST
+
+/* A map from static pass id to optimization pass. */
+struct opt_pass **passes_by_id;
+int passes_by_id_size;
+
+/* Set the static pass number of pass PASS to ID and record that
+ in the mapping from static pass number to pass. */
+
+static void
+set_pass_for_id (int id, struct opt_pass *pass)
+{
+ pass->static_pass_number = id;
+ if (passes_by_id_size <= id)
+ {
+ passes_by_id = XRESIZEVEC (struct 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. */
+
+struct opt_pass *
+get_pass_for_id (int id)
+{
+ 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 (struct opt_pass *pass)
+{
+ char *dot_name, *flag_name, *glob_name;
+ const char *name, *full_name, *prefix;
+ char num[10];
+ int flags, id;
+ int optgroup_flags = OPTGROUP_NONE;
+
+ /* 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));
+
+ /* 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;
+ id = dump_register (dot_name, flag_name, glob_name, flags, optgroup_flags);
+ 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));
+}
+
+/* Recursive worker function for register_dump_files. */
+
+static int
+register_dump_files_1 (struct opt_pass *pass, int properties)
+{
+ do
+ {
+ int new_properties = (properties | pass->properties_provided)
+ & ~pass->properties_destroyed;
+
+ if (pass->name && pass->name[0] != '*')
+ register_one_dump_file (pass);
+
+ if (pass->sub)
+ new_properties = register_dump_files_1 (pass->sub, 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.
+ PROPERTIES reflects the properties that are guaranteed to be available at
+ the beginning of the pipeline. */
+
+static void
+register_dump_files (struct opt_pass *pass,int properties)
+{
+ pass->properties_required |= properties;
+ register_dump_files_1 (pass, properties);
+}
+
+struct pass_registry
+{
+ const char* unique_name;
+ struct opt_pass *pass;
+};
+
+/* Pass registry hash function. */
+
+static hashval_t
+passr_hash (const void *p)
+{
+ const struct pass_registry *const s = (const struct pass_registry *const) p;
+ return htab_hash_string (s->unique_name);
+}
+
+/* Hash equal function */
+
+static int
+passr_eq (const void *p1, const void *p2)
+{
+ const struct pass_registry *const s1 = (const struct pass_registry *const) p1;
+ const struct pass_registry *const s2 = (const struct pass_registry *const) p2;
+
+ return !strcmp (s1->unique_name, s2->unique_name);
+}
+
+static htab_t name_to_pass_map = NULL;
+
+/* Register PASS with NAME. */
+
+static void
+register_pass_name (struct opt_pass *pass, const char *name)
+{
+ struct pass_registry **slot;
+ struct pass_registry pr;
+
+ if (!name_to_pass_map)
+ name_to_pass_map = htab_create (256, passr_hash, passr_eq, NULL);
+
+ pr.unique_name = name;
+ slot = (struct pass_registry **) htab_find_slot (name_to_pass_map, &pr, INSERT);
+ if (!*slot)
+ {
+ struct pass_registry *new_pr;
+
+ new_pr = XCNEW (struct pass_registry);
+ new_pr->unique_name = xstrdup (name);
+ new_pr->pass = pass;
+ *slot = new_pr;
+ }
+ else
+ return; /* Ignore plugin passes. */
+}
+
+/* Map from pass id to canonicalized pass name. */
+
+typedef const char *char_ptr;
+static vec<char_ptr> pass_tab = vNULL;
+
+/* Callback function for traversing NAME_TO_PASS_MAP. */
+
+static int
+pass_traverse (void **slot, void *data ATTRIBUTE_UNUSED)
+{
+ struct pass_registry **p = (struct pass_registry **)slot;
+ struct opt_pass *pass = (*p)->pass;
+
+ gcc_assert (pass->static_pass_number > 0);
+ gcc_assert (pass_tab.exists ());
+
+ pass_tab[pass->static_pass_number] = (*p)->unique_name;
+
+ return 1;
+}
+
+/* The function traverses NAME_TO_PASS_MAP and creates a pass info
+ table for dumping purpose. */
+
+static void
+create_pass_tab (void)
+{
+ if (!flag_dump_passes)
+ return;
+
+ pass_tab.safe_grow_cleared (passes_by_id_size + 1);
+ htab_traverse (name_to_pass_map, pass_traverse, NULL);
+}
+
+static bool override_gate_status (struct 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 (struct opt_pass *pass, int pass_indent)
+{
+ int indent = 3 * pass_indent;
+ const char *pn;
+ bool is_on, is_really_on;
+
+ is_on = (pass->gate == NULL) ? true : pass->gate();
+ 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 (struct 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)
+{
+ struct cgraph_node *n, *node = NULL;
+
+ create_pass_tab();
+
+ FOR_EACH_DEFINED_FUNCTION (n)
+ if (DECL_STRUCT_FUNCTION (n->symbol.decl))
+ {
+ node = n;
+ break;
+ }
+
+ if (!node)
+ return;
+
+ push_cfun (DECL_STRUCT_FUNCTION (node->symbol.decl));
+
+ 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_lto_gen_passes, 1);
+ dump_pass_list (all_late_ipa_passes, 1);
+ dump_pass_list (all_passes, 1);
+
+ pop_cfun ();
+}
+
+
+/* Returns the pass with NAME. */
+
+static struct opt_pass *
+get_pass_by_name (const char *name)
+{
+ struct pass_registry **slot, pr;
+
+ pr.unique_name = name;
+ slot = (struct pass_registry **) htab_find_slot (name_to_pass_map,
+ &pr, NO_INSERT);
+
+ if (!slot || !*slot)
+ return NULL;
+
+ return (*slot)->pass;
+}
+
+
+/* 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<uid_range_p>
+ enabled_pass_uid_range_tab = vNULL;
+static vec<uid_range_p>
+ disabled_pass_uid_range_tab = vNULL;
+
+
+/* Parse option string for -fdisable- and -fenable-
+ The syntax of the options:
+
+ -fenable-<pass_name>
+ -fdisable-<pass_name>
+
+ -fenable-<pass_name>=s1:e1,s2:e2,...
+ -fdisable-<pass_name>=s1:e1,s2:e2,...
+*/
+
+static void
+enable_disable_pass (const char *arg, bool is_enable)
+{
+ struct opt_pass *pass;
+ char *range_str, *phase_name;
+ char *argstr = xstrdup (arg);
+ vec<uid_range_p> *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 = 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 (struct opt_pass *pass,
+ tree func,
+ vec<uid_range_p> 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_get_node (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;
+}
+
+/* Look at the static_pass_number and duplicate the pass
+ if it is already added to a list. */
+
+static struct opt_pass *
+make_pass_instance (struct opt_pass *pass, bool track_duplicates)
+{
+ /* A nonzero static_pass_number indicates that the
+ pass is already in the list. */
+ if (pass->static_pass_number)
+ {
+ struct opt_pass *new_pass;
+
+ if (pass->type == GIMPLE_PASS
+ || pass->type == RTL_PASS
+ || pass->type == SIMPLE_IPA_PASS)
+ {
+ new_pass = XNEW (struct opt_pass);
+ memcpy (new_pass, pass, sizeof (struct opt_pass));
+ }
+ else if (pass->type == IPA_PASS)
+ {
+ new_pass = (struct opt_pass *)XNEW (struct ipa_opt_pass_d);
+ memcpy (new_pass, pass, sizeof (struct ipa_opt_pass_d));
+ }
+ else
+ gcc_unreachable ();
+
+ new_pass->next = NULL;
+
+ 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 ((pass->name && pass->name[0] != '*') || track_duplicates)
+ {
+ pass->static_pass_number -= 1;
+ new_pass->static_pass_number = -pass->static_pass_number;
+ }
+ return new_pass;
+ }
+ else
+ {
+ pass->todo_flags_start |= TODO_mark_first_instance;
+ pass->static_pass_number = -1;
+
+ invoke_plugin_callbacks (PLUGIN_NEW_PASS, pass);
+ }
+ return pass;
+}
+
+/* Add a pass to the pass list. Duplicate the pass if it's already
+ in the list. */
+
+static struct opt_pass **
+next_pass_1 (struct opt_pass **list, struct opt_pass *pass)
+{
+ /* Every pass should have a name so that plugins can refer to them. */
+ gcc_assert (pass->name != NULL);
+
+ *list = make_pass_instance (pass, false);
+
+ 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
+{
+ struct 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,
+ struct opt_pass **pass_list)
+{
+ struct 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)))
+ {
+ struct opt_pass *new_pass;
+ struct pass_list_node *new_pass_node;
+
+ new_pass = make_pass_instance (new_pass_info->pass, true);
+
+ /* 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)
+{
+ bool all_instances, success;
+
+ /* 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 ("plugin cannot register a missing pass");
+
+ if (!pass_info->pass->name)
+ fatal_error ("plugin cannot register an unnamed pass");
+
+ if (!pass_info->reference_pass_name)
+ fatal_error
+ ("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_lto_gen_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
+ ("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 (get_dump_file_info (tdi)->pstate)
+ get_dump_file_info (added_pass_nodes->pass->static_pass_number)
+ ->pstate = get_dump_file_info (tdi)->pstate;
+ 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
+init_optimization_passes (void)
+{
+ struct opt_pass **p;
+
+#define NEXT_PASS(PASS) (p = next_pass_1 (p, &((PASS).pass)))
+
+ /* All passes needed to lower the function into shape optimizers can
+ operate on. These passes are always run first on the function, but
+ backend might produce already lowered functions that are not processed
+ by these passes. */
+ p = &all_lowering_passes;
+ NEXT_PASS (pass_warn_unused_result);
+ NEXT_PASS (pass_diagnose_omp_blocks);
+ NEXT_PASS (pass_diagnose_tm_blocks);
+ NEXT_PASS (pass_mudflap_1);
+ NEXT_PASS (pass_lower_omp);
+ NEXT_PASS (pass_lower_cf);
+ NEXT_PASS (pass_lower_tm);
+ NEXT_PASS (pass_refactor_eh);
+ NEXT_PASS (pass_lower_eh);
+ NEXT_PASS (pass_build_cfg);
+ NEXT_PASS (pass_warn_function_return);
+ NEXT_PASS (pass_build_cgraph_edges);
+ *p = NULL;
+
+ /* Interprocedural optimization passes. */
+ p = &all_small_ipa_passes;
+ NEXT_PASS (pass_ipa_free_lang_data);
+ NEXT_PASS (pass_ipa_function_and_variable_visibility);
+ NEXT_PASS (pass_early_local_passes);
+ {
+ struct opt_pass **p = &pass_early_local_passes.pass.sub;
+ NEXT_PASS (pass_fixup_cfg);
+ NEXT_PASS (pass_init_datastructures);
+ NEXT_PASS (pass_expand_omp);
+
+ NEXT_PASS (pass_build_ssa);
+ NEXT_PASS (pass_lower_vector);
+ NEXT_PASS (pass_early_warn_uninitialized);
+ NEXT_PASS (pass_rebuild_cgraph_edges);
+ NEXT_PASS (pass_inline_parameters);
+ NEXT_PASS (pass_early_inline);
+ NEXT_PASS (pass_all_early_optimizations);
+ {
+ struct opt_pass **p = &pass_all_early_optimizations.pass.sub;
+ NEXT_PASS (pass_remove_cgraph_callee_edges);
+ NEXT_PASS (pass_rename_ssa_copies);
+ NEXT_PASS (pass_ccp);
+ /* After CCP we rewrite no longer addressed locals into SSA
+ form if possible. */
+ NEXT_PASS (pass_forwprop);
+ /* pass_build_ealias is a dummy pass that ensures that we
+ execute TODO_rebuild_alias at this point. */
+ NEXT_PASS (pass_build_ealias);
+ NEXT_PASS (pass_sra_early);
+ NEXT_PASS (pass_fre);
+ NEXT_PASS (pass_copy_prop);
+ NEXT_PASS (pass_merge_phi);
+ NEXT_PASS (pass_cd_dce);
+ NEXT_PASS (pass_early_ipa_sra);
+ NEXT_PASS (pass_tail_recursion);
+ NEXT_PASS (pass_convert_switch);
+ NEXT_PASS (pass_cleanup_eh);
+ NEXT_PASS (pass_profile);
+ NEXT_PASS (pass_local_pure_const);
+ /* Split functions creates parts that are not run through
+ early optimizations again. It is thus good idea to do this
+ late. */
+ NEXT_PASS (pass_split_functions);
+ }
+ NEXT_PASS (pass_release_ssa_names);
+ NEXT_PASS (pass_rebuild_cgraph_edges);
+ NEXT_PASS (pass_inline_parameters);
+ }
+ NEXT_PASS (pass_ipa_free_inline_summary);
+ NEXT_PASS (pass_ipa_tree_profile);
+ {
+ struct opt_pass **p = &pass_ipa_tree_profile.pass.sub;
+ NEXT_PASS (pass_feedback_split_functions);
+ }
+ NEXT_PASS (pass_ipa_increase_alignment);
+ NEXT_PASS (pass_ipa_tm);
+ NEXT_PASS (pass_ipa_lower_emutls);
+ *p = NULL;
+
+ p = &all_regular_ipa_passes;
+ NEXT_PASS (pass_ipa_whole_program_visibility);
+ NEXT_PASS (pass_ipa_profile);
+ NEXT_PASS (pass_ipa_cp);
+ NEXT_PASS (pass_ipa_cdtor_merge);
+ NEXT_PASS (pass_ipa_inline);
+ NEXT_PASS (pass_ipa_pure_const);
+ NEXT_PASS (pass_ipa_reference);
+ *p = NULL;
+
+ p = &all_lto_gen_passes;
+ NEXT_PASS (pass_ipa_lto_gimple_out);
+ NEXT_PASS (pass_ipa_lto_finish_out); /* This must be the last LTO pass. */
+ *p = NULL;
+
+ /* Simple IPA passes executed after the regular passes. In WHOPR mode the
+ passes are executed after partitioning and thus see just parts of the
+ compiled unit. */
+ p = &all_late_ipa_passes;
+ NEXT_PASS (pass_ipa_pta);
+ *p = NULL;
+
+ /* These passes are run after IPA passes on every function that is being
+ output to the assembler file. */
+ p = &all_passes;
+ NEXT_PASS (pass_fixup_cfg);
+ NEXT_PASS (pass_lower_eh_dispatch);
+ NEXT_PASS (pass_all_optimizations);
+ {
+ struct opt_pass **p = &pass_all_optimizations.pass.sub;
+ NEXT_PASS (pass_remove_cgraph_callee_edges);
+ /* Initial scalar cleanups before alias computation.
+ They ensure memory accesses are not indirect wherever possible. */
+ NEXT_PASS (pass_strip_predict_hints);
+ NEXT_PASS (pass_rename_ssa_copies);
+ NEXT_PASS (pass_complete_unrolli);
+ NEXT_PASS (pass_ccp);
+ /* After CCP we rewrite no longer addressed locals into SSA
+ form if possible. */
+ NEXT_PASS (pass_forwprop);
+ /* pass_build_alias is a dummy pass that ensures that we
+ execute TODO_rebuild_alias at this point. */
+ NEXT_PASS (pass_build_alias);
+ NEXT_PASS (pass_return_slot);
+ NEXT_PASS (pass_phiprop);
+ NEXT_PASS (pass_fre);
+ NEXT_PASS (pass_copy_prop);
+ NEXT_PASS (pass_merge_phi);
+ NEXT_PASS (pass_vrp);
+ NEXT_PASS (pass_dce);
+ NEXT_PASS (pass_call_cdce);
+ NEXT_PASS (pass_cselim);
+ NEXT_PASS (pass_tree_ifcombine);
+ NEXT_PASS (pass_phiopt);
+ NEXT_PASS (pass_tail_recursion);
+ NEXT_PASS (pass_ch);
+ NEXT_PASS (pass_stdarg);
+ NEXT_PASS (pass_lower_complex);
+ NEXT_PASS (pass_sra);
+ NEXT_PASS (pass_rename_ssa_copies);
+ /* The dom pass will also resolve all __builtin_constant_p calls
+ that are still there to 0. This has to be done after some
+ propagations have already run, but before some more dead code
+ is removed, and this place fits nicely. Remember this when
+ trying to move or duplicate pass_dominator somewhere earlier. */
+ 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_dse);
+ NEXT_PASS (pass_reassoc);
+ NEXT_PASS (pass_dce);
+ NEXT_PASS (pass_forwprop);
+ NEXT_PASS (pass_phiopt);
+ NEXT_PASS (pass_object_sizes);
+ NEXT_PASS (pass_strlen);
+ NEXT_PASS (pass_ccp);
+ /* After CCP we rewrite no longer addressed locals into SSA
+ form if possible. */
+ NEXT_PASS (pass_copy_prop);
+ NEXT_PASS (pass_cse_sincos);
+ NEXT_PASS (pass_optimize_bswap);
+ NEXT_PASS (pass_split_crit_edges);
+ NEXT_PASS (pass_pre);
+ NEXT_PASS (pass_sink_code);
+ NEXT_PASS (pass_asan);
+ NEXT_PASS (pass_tsan);
+ NEXT_PASS (pass_tree_loop);
+ {
+ struct opt_pass **p = &pass_tree_loop.pass.sub;
+ NEXT_PASS (pass_tree_loop_init);
+ NEXT_PASS (pass_lim);
+ NEXT_PASS (pass_copy_prop);
+ NEXT_PASS (pass_dce_loop);
+ NEXT_PASS (pass_tree_unswitch);
+ NEXT_PASS (pass_scev_cprop);
+ NEXT_PASS (pass_record_bounds);
+ NEXT_PASS (pass_check_data_deps);
+ NEXT_PASS (pass_loop_distribution);
+ NEXT_PASS (pass_copy_prop);
+ NEXT_PASS (pass_graphite);
+ {
+ struct opt_pass **p = &pass_graphite.pass.sub;
+ NEXT_PASS (pass_graphite_transforms);
+ NEXT_PASS (pass_lim);
+ NEXT_PASS (pass_copy_prop);
+ NEXT_PASS (pass_dce_loop);
+ }
+ NEXT_PASS (pass_iv_canon);
+ NEXT_PASS (pass_if_conversion);
+ NEXT_PASS (pass_vectorize);
+ {
+ struct opt_pass **p = &pass_vectorize.pass.sub;
+ NEXT_PASS (pass_dce_loop);
+ }
+ NEXT_PASS (pass_predcom);
+ NEXT_PASS (pass_complete_unroll);
+ NEXT_PASS (pass_slp_vectorize);
+ NEXT_PASS (pass_parallelize_loops);
+ NEXT_PASS (pass_loop_prefetch);
+ NEXT_PASS (pass_iv_optimize);
+ NEXT_PASS (pass_lim);
+ NEXT_PASS (pass_tree_loop_done);
+ }
+ NEXT_PASS (pass_lower_vector_ssa);
+ NEXT_PASS (pass_cse_reciprocals);
+ NEXT_PASS (pass_reassoc);
+ NEXT_PASS (pass_vrp);
+ NEXT_PASS (pass_strength_reduction);
+ 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);
+ NEXT_PASS (pass_tracer);
+
+ /* 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_fold_builtins);
+ NEXT_PASS (pass_optimize_widening_mul);
+ NEXT_PASS (pass_tail_calls);
+ NEXT_PASS (pass_rename_ssa_copies);
+ NEXT_PASS (pass_uncprop);
+ NEXT_PASS (pass_local_pure_const);
+ }
+ NEXT_PASS (pass_all_optimizations_g);
+ {
+ struct opt_pass **p = &pass_all_optimizations_g.pass.sub;
+ NEXT_PASS (pass_remove_cgraph_callee_edges);
+ NEXT_PASS (pass_strip_predict_hints);
+ /* Lower remaining pieces of GIMPLE. */
+ NEXT_PASS (pass_lower_complex);
+ NEXT_PASS (pass_lower_vector_ssa);
+ /* Perform simple scalar cleanup which is constant/copy propagation. */
+ NEXT_PASS (pass_ccp);
+ NEXT_PASS (pass_object_sizes);
+ /* Copy propagation also copy-propagates constants, this is necessary
+ to forward object-size results properly. */
+ NEXT_PASS (pass_copy_prop);
+ NEXT_PASS (pass_asan);
+ NEXT_PASS (pass_tsan);
+ NEXT_PASS (pass_rename_ssa_copies);
+ NEXT_PASS (pass_dce);
+ /* Fold remaining builtins. */
+ NEXT_PASS (pass_fold_builtins);
+ /* ??? We do want some kind of loop invariant motion, but we possibly
+ need to adjust LIM to be more friendly towards preserving accurate
+ debug information here. */
+ NEXT_PASS (pass_late_warn_uninitialized);
+ NEXT_PASS (pass_uncprop);
+ NEXT_PASS (pass_local_pure_const);
+ }
+ NEXT_PASS (pass_tm_init);
+ {
+ struct opt_pass **p = &pass_tm_init.pass.sub;
+ NEXT_PASS (pass_tm_mark);
+ NEXT_PASS (pass_tm_memopt);
+ NEXT_PASS (pass_tm_edges);
+ }
+ NEXT_PASS (pass_lower_complex_O0);
+ NEXT_PASS (pass_asan_O0);
+ NEXT_PASS (pass_tsan_O0);
+ NEXT_PASS (pass_cleanup_eh);
+ NEXT_PASS (pass_lower_resx);
+ NEXT_PASS (pass_nrv);
+ NEXT_PASS (pass_mudflap_2);
+ NEXT_PASS (pass_cleanup_cfg_post_optimizing);
+ NEXT_PASS (pass_warn_function_noreturn);
+
+ NEXT_PASS (pass_expand);
+
+ NEXT_PASS (pass_rest_of_compilation);
+ {
+ struct opt_pass **p = &pass_rest_of_compilation.pass.sub;
+ NEXT_PASS (pass_instantiate_virtual_regs);
+ NEXT_PASS (pass_into_cfg_layout_mode);
+ NEXT_PASS (pass_jump);
+ NEXT_PASS (pass_lower_subreg);
+ NEXT_PASS (pass_df_initialize_opt);
+ NEXT_PASS (pass_cse);
+ NEXT_PASS (pass_rtl_fwprop);
+ NEXT_PASS (pass_rtl_cprop);
+ NEXT_PASS (pass_rtl_pre);
+ NEXT_PASS (pass_rtl_hoist);
+ NEXT_PASS (pass_rtl_cprop);
+ NEXT_PASS (pass_rtl_store_motion);
+ NEXT_PASS (pass_cse_after_global_opts);
+ NEXT_PASS (pass_rtl_ifcvt);
+ NEXT_PASS (pass_reginfo_init);
+ /* 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);
+ {
+ struct opt_pass **p = &pass_loop2.pass.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;
+ }
+ NEXT_PASS (pass_web);
+ NEXT_PASS (pass_rtl_cprop);
+ NEXT_PASS (pass_cse2);
+ NEXT_PASS (pass_rtl_dse1);
+ NEXT_PASS (pass_rtl_fwprop_addr);
+ NEXT_PASS (pass_inc_dec);
+ NEXT_PASS (pass_initialize_regs);
+ NEXT_PASS (pass_ud_rtl_dce);
+ NEXT_PASS (pass_combine);
+ NEXT_PASS (pass_if_after_combine);
+ NEXT_PASS (pass_partition_blocks);
+ NEXT_PASS (pass_regmove);
+ NEXT_PASS (pass_outof_cfg_layout_mode);
+ NEXT_PASS (pass_split_all_insns);
+ NEXT_PASS (pass_lower_subreg2);
+ NEXT_PASS (pass_df_initialize_no_opt);
+ NEXT_PASS (pass_stack_ptr_mod);
+ NEXT_PASS (pass_mode_switching);
+ NEXT_PASS (pass_match_asm_constraints);
+ NEXT_PASS (pass_sms);
+ NEXT_PASS (pass_sched);
+ NEXT_PASS (pass_ira);
+ NEXT_PASS (pass_reload);
+ NEXT_PASS (pass_postreload);
+ {
+ struct opt_pass **p = &pass_postreload.pass.sub;
+ NEXT_PASS (pass_postreload_cse);
+ NEXT_PASS (pass_gcse2);
+ NEXT_PASS (pass_split_after_reload);
+ NEXT_PASS (pass_ree);
+ NEXT_PASS (pass_compare_elim_after_reload);
+ NEXT_PASS (pass_branch_target_load_optimize1);
+ NEXT_PASS (pass_thread_prologue_and_epilogue);
+ NEXT_PASS (pass_rtl_dse2);
+ NEXT_PASS (pass_stack_adjustments);
+ NEXT_PASS (pass_jump2);
+ NEXT_PASS (pass_peephole2);
+ NEXT_PASS (pass_if_after_reload);
+ NEXT_PASS (pass_regrename);
+ NEXT_PASS (pass_cprop_hardreg);
+ NEXT_PASS (pass_fast_rtl_dce);
+ NEXT_PASS (pass_reorder_blocks);
+ NEXT_PASS (pass_branch_target_load_optimize2);
+ NEXT_PASS (pass_leaf_regs);
+ NEXT_PASS (pass_split_before_sched2);
+ NEXT_PASS (pass_sched2);
+ NEXT_PASS (pass_stack_regs);
+ {
+ struct opt_pass **p = &pass_stack_regs.pass.sub;
+ NEXT_PASS (pass_split_before_regstack);
+ NEXT_PASS (pass_stack_regs_run);
+ }
+ 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_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_dwarf2_frame);
+ NEXT_PASS (pass_final);
+ }
+ NEXT_PASS (pass_df_finish);
+ }
+ NEXT_PASS (pass_clean_state);
+ *p = NULL;
+
+#undef NEXT_PASS
+
+ /* Register the passes with the tree dump code. */
+ register_dump_files (all_lowering_passes, PROP_gimple_any);
+ register_dump_files (all_small_ipa_passes,
+ PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh
+ | PROP_cfg);
+ register_dump_files (all_regular_ipa_passes,
+ PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh
+ | PROP_cfg);
+ register_dump_files (all_lto_gen_passes,
+ PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh
+ | PROP_cfg);
+ register_dump_files (all_late_ipa_passes,
+ PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh
+ | PROP_cfg);
+ register_dump_files (all_passes,
+ PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh
+ | PROP_cfg);
+}
+
+/* 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) (void *data), void *data)
+{
+ if (current_function_decl)
+ callback (data);
+ else
+ {
+ struct cgraph_node *node;
+ FOR_EACH_DEFINED_FUNCTION (node)
+ if (gimple_has_body_p (node->symbol.decl)
+ && (!node->clone_of || node->symbol.decl != node->clone_of->symbol.decl))
+ {
+ push_cfun (DECL_STRUCT_FUNCTION (node->symbol.decl));
+ callback (data);
+ if (!flag_wpa)
+ {
+ free_dominance_info (CDI_DOMINATORS);
+ free_dominance_info (CDI_POST_DOMINATORS);
+ }
+ pop_cfun ();
+ ggc_collect ();
+ }
+ }
+}
+
+/* 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_ptr *order;
+
+/* 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) (void *data), void *data)
+{
+ int i;
+
+ if (current_function_decl)
+ callback (data);
+ else
+ {
+ gcc_assert (!order);
+ order = ggc_alloc_vec_cgraph_node_ptr (cgraph_n_nodes);
+ nnodes = ipa_reverse_postorder (order);
+ for (i = nnodes - 1; i >= 0; i--)
+ order[i]->process = 1;
+ for (i = nnodes - 1; i >= 0; i--)
+ {
+ struct cgraph_node *node = order[i];
+
+ /* Allow possibly removed nodes to be garbage collected. */
+ order[i] = NULL;
+ node->process = 0;
+ if (cgraph_function_with_gimple_body_p (node))
+ {
+ push_cfun (DECL_STRUCT_FUNCTION (node->symbol.decl));
+ callback (data);
+ free_dominance_info (CDI_DOMINATORS);
+ free_dominance_info (CDI_POST_DOMINATORS);
+ pop_cfun ();
+ ggc_collect ();
+ }
+ }
+ }
+ ggc_free (order);
+ order = NULL;
+ nnodes = 0;
+}
+
+/* Helper function to perform function body dump. */
+
+static void
+execute_function_dump (void *data ATTRIBUTE_UNUSED)
+{
+ if (dump_file && current_function_decl)
+ {
+ if (cfun->curr_properties & PROP_trees)
+ dump_function_to_file (current_function_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 ((cfun->curr_properties & PROP_cfg)
+ && (dump_flags & TDF_GRAPH))
+ print_graph_cfg (dump_file_name, 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)
+{
+ if (index == -1)
+ return;
+ if (!profile_record)
+ profile_record = XCNEWVEC (struct profile_record,
+ passes_by_id_size);
+ gcc_assert (index < 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)
+{
+ 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.pass.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 (void *data)
+{
+ unsigned int flags = (size_t)data;
+ flags &= ~cfun->last_verified;
+ if (!flags)
+ return;
+
+ /* 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);
+ cfun->last_verified &= ~TODO_verify_ssa;
+ }
+
+ 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)
+ rebuild_cgraph_edges ();
+
+ /* If we've seen errors do not bother running any verifiers. */
+ if (seen_error ())
+ return;
+
+#if defined ENABLE_CHECKING
+ if (flags & TODO_verify_ssa
+ || (current_loops && loops_state_satisfies_p (LOOP_CLOSED_SSA)))
+ {
+ verify_gimple_in_cfg (cfun);
+ verify_ssa (true);
+ }
+ else if (flags & TODO_verify_stmts)
+ verify_gimple_in_cfg (cfun);
+ if (flags & TODO_verify_flow)
+ verify_flow_info ();
+ if (current_loops && loops_state_satisfies_p (LOOP_CLOSED_SSA))
+ verify_loop_closed_ssa (false);
+ if (flags & TODO_verify_rtl_sharing)
+ verify_rtl_sharing ();
+#endif
+
+ cfun->last_verified = flags & TODO_verify_all;
+}
+
+/* Perform all TODO actions. */
+static void
+execute_todo (unsigned int flags)
+{
+#if defined ENABLE_CHECKING
+ if (cfun
+ && need_ssa_update_p (cfun))
+ gcc_assert (flags & TODO_update_ssa_any);
+#endif
+
+ timevar_push (TV_TODO);
+
+ /* Inform the pass whether it is the first time it is run. */
+ first_pass_instance = (flags & TODO_mark_first_instance) != 0;
+
+ statistics_fini_pass ();
+
+ do_per_function (execute_function_todo, (void *)(size_t) flags);
+
+ /* 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 (true, dump_file);
+ }
+
+ if ((flags & TODO_dump_symtab) && dump_file && !current_function_decl)
+ {
+ gcc_assert (!cfun);
+ dump_symtab (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 ();
+
+ /* 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);
+
+ timevar_pop (TV_TODO);
+}
+
+/* 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 (void *data ATTRIBUTE_UNUSED)
+{
+ cfun->last_verified = 0;
+}
+
+/* Helper function. Verify that the properties has been turn into the
+ properties expected by the pass. */
+
+#ifdef ENABLE_CHECKING
+static void
+verify_curr_properties (void *data)
+{
+ unsigned int props = (size_t)data;
+ gcc_assert ((cfun->curr_properties & props) == props);
+}
+#endif
+
+/* Initialize pass dump file. */
+/* This is non-static so that the plugins can use it. */
+
+bool
+pass_init_dump_file (struct opt_pass *pass)
+{
+ /* If a dump file name is present, open it if enabled. */
+ if (pass->static_pass_number != -1)
+ {
+ timevar_push (TV_DUMP);
+ bool initializing_dump = !dump_initialized_p (pass->static_pass_number);
+ dump_file_name = get_dump_file_name (pass->static_pass_number);
+ dump_start (pass->static_pass_number, &dump_flags);
+ if (dump_file && current_function_decl)
+ 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);
+ 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 (struct opt_pass *pass)
+{
+ timevar_push (TV_DUMP);
+
+ /* Flush and close dump file. */
+ if (dump_file_name)
+ {
+ free (CONST_CAST (char *, dump_file_name));
+ dump_file_name = NULL;
+ }
+
+ 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 (void *data)
+{
+ struct opt_pass *pass = (struct opt_pass *) data;
+ cfun->curr_properties = (cfun->curr_properties | pass->properties_provided)
+ & ~pass->properties_destroyed;
+}
+
+/* Execute summary generation for all of the passes in IPA_PASS. */
+
+void
+execute_ipa_summary_passes (struct ipa_opt_pass_d *ipa_pass)
+{
+ while (ipa_pass)
+ {
+ struct opt_pass *pass = &ipa_pass->pass;
+
+ /* Execute all of the IPA_PASSes in the list. */
+ if (ipa_pass->pass.type == IPA_PASS
+ && (!pass->gate || pass->gate ())
+ && 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);
+
+ ipa_pass->generate_summary ();
+
+ /* Stop timevar. */
+ if (pass->tv_id)
+ timevar_pop (pass->tv_id);
+
+ pass_fini_dump_file (pass);
+ }
+ ipa_pass = (struct ipa_opt_pass_d *)ipa_pass->pass.next;
+ }
+}
+
+/* Execute IPA_PASS function transform on NODE. */
+
+static void
+execute_one_ipa_transform_pass (struct cgraph_node *node,
+ struct ipa_opt_pass_d *ipa_pass)
+{
+ struct opt_pass *pass = &ipa_pass->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);
+
+ /* Run pre-pass verification. */
+ execute_todo (ipa_pass->function_transform_todo_flags_start);
+
+ /* If a timevar is present, start it. */
+ if (pass->tv_id != TV_NONE)
+ timevar_push (pass->tv_id);
+
+ /* Do it! */
+ todo_after = ipa_pass->function_transform (node);
+
+ /* Stop timevar. */
+ if (pass->tv_id != TV_NONE)
+ timevar_pop (pass->tv_id);
+
+ 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);
+
+ do_per_function (execute_function_dump, NULL);
+ pass_fini_dump_file (pass);
+
+ current_pass = NULL;
+}
+
+/* For the current function, execute all ipa transforms. */
+
+void
+execute_all_ipa_transforms (void)
+{
+ struct cgraph_node *node;
+ if (!cfun)
+ return;
+ node = cgraph_get_node (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 ();
+ }
+}
+
+/* Callback for do_per_function to apply all IPA transforms. */
+
+static void
+apply_ipa_transforms (void *data)
+{
+ struct cgraph_node *node = cgraph_get_node (current_function_decl);
+ if (!node->global.inlined_to && node->ipa_transforms_to_apply.exists ())
+ {
+ *(bool *)data = true;
+ execute_all_ipa_transforms();
+ rebuild_cgraph_edges ();
+ }
+}
+
+/* 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 (struct 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;
+}
+
+
+/* Execute PASS. */
+
+bool
+execute_one_pass (struct 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 == NULL) ? true : pass->gate();
+ 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;
+ }
+
+ /* Pass execution event trigger: useful to identify passes being
+ executed. */
+ invoke_plugin_callbacks (PLUGIN_PASS_EXECUTION, pass);
+
+ /* SIPLE IPA passes do not handle callgraphs with IPA transforms in it.
+ Apply all trnasforms first. */
+ if (pass->type == SIMPLE_IPA_PASS)
+ {
+ bool applied = false;
+ do_per_function (apply_ipa_transforms, (void *)&applied);
+ if (applied)
+ symtab_remove_unreachable_nodes (true, dump_file);
+ /* Restore current_pass. */
+ current_pass = 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);
+
+ /* Run pre-pass verification. */
+ execute_todo (pass->todo_flags_start);
+
+#ifdef ENABLE_CHECKING
+ do_per_function (verify_curr_properties,
+ (void *)(size_t)pass->properties_required);
+#endif
+
+ /* If a timevar is present, start it. */
+ if (pass->tv_id != TV_NONE)
+ timevar_push (pass->tv_id);
+
+ /* Do it! */
+ if (pass->execute)
+ {
+ todo_after = pass->execute ();
+ do_per_function (clear_last_verified, NULL);
+ }
+
+ /* Stop timevar. */
+ if (pass->tv_id != TV_NONE)
+ timevar_pop (pass->tv_id);
+
+ 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);
+ if (profile_report && cfun && (cfun->curr_properties & PROP_cfg))
+ check_profile_consistency (pass->static_pass_number, 1, true);
+
+ verify_interpass_invariants ();
+ do_per_function (execute_function_dump, NULL);
+ if (pass->type == IPA_PASS)
+ {
+ struct cgraph_node *node;
+ FOR_EACH_FUNCTION_WITH_GIMPLE_BODY (node)
+ node->ipa_transforms_to_apply.safe_push ((struct ipa_opt_pass_d *)pass);
+ }
+
+ if (!current_function_decl)
+ cgraph_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;
+
+ return true;
+}
+
+void
+execute_pass_list (struct opt_pass *pass)
+{
+ do
+ {
+ gcc_assert (pass->type == GIMPLE_PASS
+ || pass->type == RTL_PASS);
+ 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. If SET is not NULL, write out summaries of only
+ those node in SET. */
+
+static void
+ipa_write_summaries_2 (struct opt_pass *pass, struct lto_out_decl_state *state)
+{
+ while (pass)
+ {
+ struct ipa_opt_pass_d *ipa_pass = (struct 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 || pass->gate ()))
+ {
+ /* If a timevar is present, start it. */
+ if (pass->tv_id)
+ timevar_push (pass->tv_id);
+
+ pass_init_dump_file (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)
+{
+ struct lto_out_decl_state *state = lto_new_out_decl_state ();
+ state->symtab_node_encoder = encoder;
+
+ lto_push_out_decl_state (state);
+
+ gcc_assert (!flag_wpa);
+ ipa_write_summaries_2 (all_regular_ipa_passes, state);
+ ipa_write_summaries_2 (all_lto_gen_passes, state);
+
+ 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;
+ struct varpool_node *vnode;
+ struct cgraph_node **order;
+
+ if (!flag_generate_lto || seen_error ())
+ return;
+
+ 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 *, cgraph_n_nodes);
+ order_pos = ipa_reverse_postorder (order);
+ gcc_assert (order_pos == cgraph_n_nodes);
+
+ for (i = order_pos - 1; i >= 0; i--)
+ {
+ struct cgraph_node *node = order[i];
+
+ if (cgraph_function_with_gimple_body_p (node))
+ {
+ /* 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->symbol.decl));
+ renumber_gimple_stmt_uids ();
+ pop_cfun ();
+ }
+ if (node->analyzed)
+ lto_set_symtab_encoder_in_partition (encoder, (symtab_node)node);
+ }
+
+ FOR_EACH_DEFINED_VARIABLE (vnode)
+ if ((!vnode->alias || vnode->alias_of))
+ lto_set_symtab_encoder_in_partition (encoder, (symtab_node)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 (struct opt_pass *pass, struct lto_out_decl_state *state)
+{
+ while (pass)
+ {
+ struct ipa_opt_pass_d *ipa_pass = (struct 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 || pass->gate ()))
+ {
+ /* If a timevar is present, start it. */
+ if (pass->tv_id)
+ timevar_push (pass->tv_id);
+
+ pass_init_dump_file (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_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->analyzed
+ && gimple_has_body_p (node->symbol.decl))
+ {
+ push_cfun (DECL_STRUCT_FUNCTION (node->symbol.decl));
+ renumber_gimple_stmt_uids ();
+ pop_cfun ();
+ }
+ }
+
+ gcc_assert (flag_wpa);
+ ipa_write_optimization_summaries_1 (all_regular_ipa_passes, state);
+ ipa_write_optimization_summaries_1 (all_lto_gen_passes, state);
+
+ 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 (struct opt_pass *pass)
+{
+ while (pass)
+ {
+ struct ipa_opt_pass_d *ipa_pass = (struct 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 == NULL || pass->gate ())
+ {
+ 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);
+
+ 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 and all_lto_gen_passes. */
+
+void
+ipa_read_summaries (void)
+{
+ ipa_read_summaries_1 (all_regular_ipa_passes);
+ ipa_read_summaries_1 (all_lto_gen_passes);
+}
+
+/* Same as execute_pass_list but assume that subpasses of IPA passes
+ are local passes. */
+
+static void
+ipa_read_optimization_summaries_1 (struct opt_pass *pass)
+{
+ while (pass)
+ {
+ struct ipa_opt_pass_d *ipa_pass = (struct 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 == NULL || pass->gate ())
+ {
+ 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);
+
+ 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 and all_lto_gen_passes. */
+
+void
+ipa_read_optimization_summaries (void)
+{
+ ipa_read_optimization_summaries_1 (all_regular_ipa_passes);
+ ipa_read_optimization_summaries_1 (all_lto_gen_passes);
+}
+
+/* Same as execute_pass_list but assume that subpasses of IPA passes
+ are local passes. */
+void
+execute_ipa_pass_list (struct 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 (*)(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);
+ cgraph_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 (struct 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 || pass->gate ()))
+ {
+ struct ipa_opt_pass_d *ipa_pass = (struct 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);
+
+ 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)
+{
+ execute_ipa_stmt_fixups (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_lcx)
+ fprintf (dump, "PROP_gimple_lcx\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_get_node (current_function_decl)->callers;
+ e;
+ e = e->next_caller)
+ {
+ if (e->caller->symbol.decl == current_function_decl)
+ continue;
+ if (!cgraph_function_with_gimple_body_p (e->caller))
+ continue;
+ if (TREE_ASM_WRITTEN (e->caller->symbol.decl))
+ continue;
+ if (!e->caller->process && !e->caller->global.inlined_to)
+ break;
+ }
+ if (dump_file && e)
+ {
+ fprintf (dump_file, "Already processed call to:\n");
+ dump_cgraph_node (dump_file, e->caller);
+ }
+ return e != NULL;
+}
+
+#include "gt-passes.h"