forked from illumos/gcc
/
passes.c
1922 lines (1667 loc) · 57.1 KB
/
passes.c
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/* Top level of GCC compilers (cc1, cc1plus, etc.)
Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
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"
#undef FLOAT /* This is for hpux. They should change hpux. */
#undef FFS /* Some systems define this in param.h. */
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include <signal.h>
#ifdef HAVE_SYS_RESOURCE_H
# include <sys/resource.h>
#endif
#ifdef HAVE_SYS_TIMES_H
# include <sys/times.h>
#endif
#include "line-map.h"
#include "input.h"
#include "tree.h"
#include "rtl.h"
#include "tm_p.h"
#include "flags.h"
#include "insn-attr.h"
#include "insn-config.h"
#include "insn-flags.h"
#include "hard-reg-set.h"
#include "recog.h"
#include "output.h"
#include "except.h"
#include "function.h"
#include "toplev.h"
#include "expr.h"
#include "basic-block.h"
#include "intl.h"
#include "ggc.h"
#include "graph.h"
#include "regs.h"
#include "timevar.h"
#include "diagnostic.h"
#include "params.h"
#include "reload.h"
#include "dwarf2asm.h"
#include "integrate.h"
#include "real.h"
#include "debug.h"
#include "target.h"
#include "langhooks.h"
#include "cfglayout.h"
#include "cfgloop.h"
#include "hosthooks.h"
#include "cgraph.h"
#include "opts.h"
#include "coverage.h"
#include "value-prof.h"
#include "tree-inline.h"
#include "tree-flow.h"
#include "tree-pass.h"
#include "tree-dump.h"
#include "df.h"
#include "predict.h"
#include "lto-streamer.h"
#include "plugin.h"
#if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
#include "dwarf2out.h"
#endif
#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
#include "dbxout.h"
#endif
#ifdef SDB_DEBUGGING_INFO
#include "sdbout.h"
#endif
#ifdef XCOFF_DEBUGGING_INFO
#include "xcoffout.h" /* Needed for external data
declarations for e.g. AIX 4.x. */
#endif
/* 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;
/* 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. */
void
debug_pass (void)
{
print_current_pass (stderr);
}
/* Global variables used to communicate with passes. */
int dump_flags;
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. */
{
tree alias;
alias = lookup_attribute ("alias", DECL_ATTRIBUTES (decl));
if (alias)
{
alias = TREE_VALUE (TREE_VALUE (alias));
alias = get_identifier (TREE_STRING_POINTER (alias));
assemble_alias (decl, alias);
}
}
/* Can't defer this, because it needs to happen before any
later function definitions are processed. */
if (DECL_ASSEMBLER_NAME_SET_P (decl) && DECL_REGISTER (decl))
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))
&& !DECL_EXTERNAL (decl))
{
if (TREE_CODE (decl) != FUNCTION_DECL)
varpool_finalize_decl (decl);
else
assemble_variable (decl, top_level, at_end, 0);
}
#ifdef ASM_FINISH_DECLARE_OBJECT
if (decl == last_assemble_variable_decl)
{
ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl,
top_level, at_end);
}
#endif
timevar_pop (TV_VARCONST);
}
else if (TREE_CODE (decl) == TYPE_DECL
/* Like in rest_of_type_compilation, avoid confusing the debug
information machinery when there are errors. */
&& !(sorrycount || errorcount))
{
timevar_push (TV_SYMOUT);
debug_hooks->type_decl (decl, !top_level);
timevar_pop (TV_SYMOUT);
}
/* Let cgraph know about the existence of variables. */
if (TREE_CODE (decl) == VAR_DECL && !DECL_EXTERNAL (decl))
varpool_node (decl);
}
/* Called after finishing a record, union or enumeral type. */
void
rest_of_type_compilation (tree type, int toplev)
{
/* Avoid confusing the debug information machinery when there are
errors. */
if (errorcount != 0 || sorrycount != 0)
return;
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_file = dump_begin (pass_profile.pass.static_pass_number, NULL);
end_branch_prob ();
if (dump_file)
dump_end (pass_profile.pass.static_pass_number, dump_file);
}
if (optimize > 0)
{
dump_file = dump_begin (pass_combine.pass.static_pass_number, NULL);
if (dump_file)
{
dump_combine_total_stats (dump_file);
dump_end (pass_combine.pass.static_pass_number, dump_file);
}
}
/* Do whatever is necessary to finish printing the graphs. */
if (graph_dump_format != no_graph)
for (i = TDI_end; (dfi = get_dump_file_info (i)) != NULL; ++i)
if (dump_initialized_p (i)
&& (dfi->flags & TDF_GRAPH) != 0
&& (name = get_dump_file_name (i)) != NULL)
{
finish_graph_dump_file (name);
free (name);
}
timevar_pop (TV_DUMP);
}
static bool
gate_rest_of_compilation (void)
{
/* Early return if there were errors. We can run afoul of our
consistency checks, and there's not really much point in fixing them. */
return !(rtl_dump_and_exit || flag_syntax_only || errorcount || sorrycount);
}
struct gimple_opt_pass pass_rest_of_compilation =
{
{
GIMPLE_PASS,
"*rest_of_compilation", /* name */
gate_rest_of_compilation, /* gate */
NULL, /* execute */
NULL, /* sub */
NULL, /* next */
0, /* static_pass_number */
TV_REST_OF_COMPILATION, /* tv_id */
PROP_rtl, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_ggc_collect /* todo_flags_finish */
}
};
static bool
gate_postreload (void)
{
return reload_completed;
}
struct rtl_opt_pass pass_postreload =
{
{
RTL_PASS,
"*all-postreload", /* name */
gate_postreload, /* gate */
NULL, /* execute */
NULL, /* sub */
NULL, /* next */
0, /* static_pass_number */
TV_NONE, /* 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_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, *prefix;
char num[10];
int flags, id;
/* 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;
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);
id = dump_register (dot_name, flag_name, glob_name, flags);
set_pass_for_id (id, pass);
}
/* 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);
}
/* 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)
{
/* 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 three lists as the reference pass could be in one (or all) of
them. */
if (!position_pass (pass_info, &all_lowering_passes)
&& !position_pass (pass_info, &all_small_ipa_passes)
&& !position_pass (pass_info, &all_regular_ipa_passes)
&& !position_pass (pass_info, &all_lto_gen_passes)
&& !position_pass (pass_info, &all_passes))
fatal_error
("pass %qs not found but is referenced by new pass %qs",
pass_info->reference_pass_name, pass_info->pass->name);
else
{
/* 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)->state)
get_dump_file_info (added_pass_nodes->pass->static_pass_number)
->state = get_dump_file_info (tdi)->state;
XDELETE (added_pass_nodes);
added_pass_nodes = next_node;
}
}
}
/* Construct the pass tree. The sequencing of passes is driven by
the cgraph routines:
cgraph_finalize_compilation_unit ()
for each node N in the cgraph
cgraph_analyze_function (N)
cgraph_lower_function (N) -> all_lowering_passes
If we are optimizing, cgraph_optimize is then invoked:
cgraph_optimize ()
ipa_passes () -> all_small_ipa_passes
cgraph_expand_all_functions ()
for each node N in the cgraph
cgraph_expand_function (N)
tree_rest_of_compilation (DECL (N)) -> 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_mudflap_1);
NEXT_PASS (pass_lower_omp);
NEXT_PASS (pass_lower_cf);
NEXT_PASS (pass_refactor_eh);
NEXT_PASS (pass_lower_eh);
NEXT_PASS (pass_build_cfg);
NEXT_PASS (pass_lower_vector);
NEXT_PASS (pass_warn_function_return);
NEXT_PASS (pass_build_cgraph_edges);
NEXT_PASS (pass_inline_parameters);
*p = NULL;
/* Interprocedural optimization passes. */
p = &all_small_ipa_passes;
NEXT_PASS (pass_ipa_function_and_variable_visibility);
NEXT_PASS (pass_ipa_early_inline);
{
struct opt_pass **p = &pass_ipa_early_inline.pass.sub;
NEXT_PASS (pass_early_inline);
NEXT_PASS (pass_inline_parameters);
NEXT_PASS (pass_rebuild_cgraph_edges);
}
NEXT_PASS (pass_ipa_free_lang_data);
NEXT_PASS (pass_early_local_passes);
{
struct opt_pass **p = &pass_early_local_passes.pass.sub;
NEXT_PASS (pass_fixup_cfg);
NEXT_PASS (pass_tree_profile);
NEXT_PASS (pass_cleanup_cfg);
NEXT_PASS (pass_init_datastructures);
NEXT_PASS (pass_expand_omp);
NEXT_PASS (pass_referenced_vars);
NEXT_PASS (pass_build_ssa);
NEXT_PASS (pass_early_warn_uninitialized);
/* Note that it is not strictly necessary to schedule an early
inline pass here. However, some test cases (e.g.,
g++.dg/other/p334435.C g++.dg/other/i386-1.C) expect extern
inline functions to be inlined even at -O0. This does not
happen during the first early inline pass. */
NEXT_PASS (pass_rebuild_cgraph_edges);
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);
NEXT_PASS (pass_forwprop);
/* pass_build_ealias is a dummy pass that ensures that we
execute TODO_rebuild_alias at this point. Re-building
alias information also rewrites no longer addressed
locals into SSA form if possible. */
NEXT_PASS (pass_build_ealias);
NEXT_PASS (pass_sra_early);
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);
}
NEXT_PASS (pass_release_ssa_names);
NEXT_PASS (pass_rebuild_cgraph_edges);
NEXT_PASS (pass_inline_parameters);
}
NEXT_PASS (pass_ipa_increase_alignment);
NEXT_PASS (pass_ipa_matrix_reorg);
*p = NULL;
p = &all_regular_ipa_passes;
NEXT_PASS (pass_ipa_whole_program_visibility);
NEXT_PASS (pass_ipa_cp);
NEXT_PASS (pass_ipa_inline);
NEXT_PASS (pass_ipa_reference);
NEXT_PASS (pass_ipa_pure_const);
NEXT_PASS (pass_ipa_type_escape);
NEXT_PASS (pass_ipa_pta);
NEXT_PASS (pass_ipa_struct_reorg);
*p = NULL;
p = &all_lto_gen_passes;
NEXT_PASS (pass_ipa_lto_gimple_out);
NEXT_PASS (pass_ipa_lto_wpa_fixup);
NEXT_PASS (pass_ipa_lto_finish_out); /* This must be the last LTO pass. */
*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_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_update_address_taken);
NEXT_PASS (pass_rename_ssa_copies);
NEXT_PASS (pass_complete_unrolli);
NEXT_PASS (pass_ccp);
NEXT_PASS (pass_forwprop);
NEXT_PASS (pass_call_cdce);
/* pass_build_alias is a dummy pass that ensures that we
execute TODO_rebuild_alias at this point. Re-building
alias information also rewrites no longer addressed
locals into SSA form if possible. */
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_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_ccp);
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_tree_loop);
{
struct opt_pass **p = &pass_tree_loop.pass.sub;
NEXT_PASS (pass_tree_loop_init);
NEXT_PASS (pass_copy_prop);
NEXT_PASS (pass_dce_loop);
NEXT_PASS (pass_lim);
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_linear_transform);
NEXT_PASS (pass_graphite_transforms);
{
struct opt_pass **p = &pass_graphite_transforms.pass.sub;
NEXT_PASS (pass_dce_loop);
NEXT_PASS (pass_lim);
}
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_lower_vector_ssa);
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_tree_loop_done);
}
NEXT_PASS (pass_cse_reciprocals);
NEXT_PASS (pass_reassoc);
NEXT_PASS (pass_vrp);
NEXT_PASS (pass_dominator);
/* The only const/copy propagation opportunities left after
DOM should be due to degenerate PHI nodes. So rather than
run the full propagators, run a specialized pass which
only examines PHIs to discover const/copy propagation
opportunities. */
NEXT_PASS (pass_phi_only_cprop);
NEXT_PASS (pass_cd_dce);
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_tail_calls);
NEXT_PASS (pass_rename_ssa_copies);
NEXT_PASS (pass_uncprop);
NEXT_PASS (pass_local_pure_const);
}
NEXT_PASS (pass_lower_complex_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_init_function);
NEXT_PASS (pass_jump);
NEXT_PASS (pass_rtl_eh);
NEXT_PASS (pass_initial_value_sets);
NEXT_PASS (pass_unshare_all_rtl);
NEXT_PASS (pass_instantiate_virtual_regs);
NEXT_PASS (pass_into_cfg_layout_mode);
NEXT_PASS (pass_jump2);
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);