/* 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
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GCC.
#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
/* This is used for debugging. It allows the current pass to printed
- from anywhere in compilation. */
+ 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
print_current_pass (FILE *file)
{
if (current_pass)
- fprintf (file, "current pass = %s (%d)\n",
+ fprintf (file, "current pass = %s (%d)\n",
current_pass->name, current_pass->static_pass_number);
else
fprintf (file, "no current pass.\n");
debug_pass (void)
{
print_current_pass (stderr);
-}
+}
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;
/* Recursive worker function for register_dump_files. */
-static int
+static int
register_dump_files_1 (struct opt_pass *pass, int properties)
{
do
return properties;
}
-/* Register the dump files for the pipeline starting at PASS.
+/* 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
+static void
register_dump_files (struct opt_pass *pass,int properties)
{
pass->properties_required |= properties;
{
struct opt_pass *new_pass;
- new_pass = XNEW (struct opt_pass);
- memcpy (new_pass, pass, sizeof (*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;
{
pass->todo_flags_start |= TODO_mark_first_instance;
pass->static_pass_number = -1;
- }
- return pass;
+
+ invoke_plugin_callbacks (PLUGIN_NEW_PASS, pass);
+ }
+ return pass;
}
/* Add a pass to the pass list. Duplicate the pass if it's already
gcc_assert (pass->name != NULL);
*list = make_pass_instance (pass, false);
-
+
return &(*list)->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
+/* Insert the pass at the proper position. Return true if the pass
is successfully added.
NEW_PASS_INFO - new pass to be inserted
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)
{
/* 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;
+ pass = new_pass;
break;
case PASS_POS_INSERT_BEFORE:
new_pass->next = 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. */
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
+ all five 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))
+ 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_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);
- 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)
{
- /* 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;
- }
+ 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;
}
}
NEXT_PASS (pass_refactor_eh);
NEXT_PASS (pass_lower_eh);
NEXT_PASS (pass_build_cfg);
- NEXT_PASS (pass_lower_complex_O0);
NEXT_PASS (pass_lower_vector);
NEXT_PASS (pass_warn_function_return);
NEXT_PASS (pass_build_cgraph_edges);
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_pure_const);
NEXT_PASS (pass_ipa_type_escape);
NEXT_PASS (pass_ipa_pta);
NEXT_PASS (pass_ipa_struct_reorg);
{
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_lim);
NEXT_PASS (pass_tree_unswitch);
NEXT_PASS (pass_scev_cprop);
NEXT_PASS (pass_record_bounds);
NEXT_PASS (pass_graphite_transforms);
{
struct opt_pass **p = &pass_graphite_transforms.pass.sub;
+ NEXT_PASS (pass_copy_prop);
NEXT_PASS (pass_dce_loop);
NEXT_PASS (pass_lim);
}
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
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);
/* Register the passes with the tree dump code. */
register_dump_files (all_lowering_passes, PROP_gimple_any);
- register_dump_files (all_small_ipa_passes,
+ 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,
+ 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,
+ register_dump_files (all_lto_gen_passes,
PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh
| PROP_cfg);
- register_dump_files (all_passes,
+ 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. */
+ call CALLBACK on the current function. */
static void
do_per_function (void (*callback) (void *data), void *data)
/* 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
+ 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 (cleanup && (cfun->curr_properties & PROP_ssa))
flags |= TODO_remove_unused_locals;
-
+
/* 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
update_ssa (update_flags);
cfun->last_verified &= ~TODO_verify_ssa;
}
-
+
if (flags & TODO_update_address_taken)
execute_update_addresses_taken (true);
execute_update_addresses_taken (true);
compute_may_aliases ();
}
-
+
if (flags & TODO_remove_unused_locals)
remove_unused_locals ();
}
#if defined ENABLE_CHECKING
- if (flags & TODO_verify_ssa)
+ if (flags & TODO_verify_ssa
+ || (current_loops && loops_state_satisfies_p (LOOP_CLOSED_SSA)))
verify_ssa (true);
if (flags & TODO_verify_flow)
verify_flow_info ();
if (flags & TODO_verify_stmts)
verify_stmts ();
- if (flags & TODO_verify_loops)
- verify_loop_closed_ssa ();
+ 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
if (flags & TODO_ggc_collect)
ggc_collect ();
- /* Now that the dumping has been done, we can get rid of the optional
+ /* 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);
#endif
/* Initialize pass dump file. */
+/* This is non-static so that the plugins can use it. */
-static bool
+bool
pass_init_dump_file (struct opt_pass *pass)
{
/* If a dump file name is present, open it if enabled. */
}
/* Flush PASS dump file. */
+/* This is non-static so that plugins can use it. */
-static void
+void
pass_fini_dump_file (struct opt_pass *pass)
{
/* Flush and close dump file. */
& ~pass->properties_destroyed;
}
-/* Schedule IPA transform pass DATA for CFUN. */
-
-static void
-add_ipa_transform_pass (void *data)
-{
- struct ipa_opt_pass_d *ipa_pass = (struct ipa_opt_pass_d *) data;
- VEC_safe_push (ipa_opt_pass, heap, cfun->ipa_transforms_to_apply, ipa_pass);
-}
-
/* Execute summary generation for all of the passes in IPA_PASS. */
void
struct opt_pass *pass = &ipa_pass->pass;
/* Execute all of the IPA_PASSes in the list. */
- if (ipa_pass->pass.type == IPA_PASS
+ if (ipa_pass->pass.type == IPA_PASS
&& (!pass->gate || pass->gate ())
&& ipa_pass->generate_summary)
{
void
execute_all_ipa_transforms (void)
{
- if (cfun && cfun->ipa_transforms_to_apply)
+ struct cgraph_node *node;
+ if (!cfun)
+ return;
+ node = cgraph_node (current_function_decl);
+ if (node->ipa_transforms_to_apply)
{
unsigned int i;
- struct cgraph_node *node = cgraph_node (current_function_decl);
- for (i = 0; i < VEC_length (ipa_opt_pass, cfun->ipa_transforms_to_apply);
+ for (i = 0; i < VEC_length (ipa_opt_pass, node->ipa_transforms_to_apply);
i++)
execute_one_ipa_transform_pass (node,
VEC_index (ipa_opt_pass,
- cfun->ipa_transforms_to_apply,
+ node->ipa_transforms_to_apply,
i));
- VEC_free (ipa_opt_pass, heap, cfun->ipa_transforms_to_apply);
- cfun->ipa_transforms_to_apply = NULL;
+ VEC_free (ipa_opt_pass, heap, node->ipa_transforms_to_apply);
+ node->ipa_transforms_to_apply = NULL;
}
}
/* Execute PASS. */
-static bool
+bool
execute_one_pass (struct opt_pass *pass)
{
bool initializing_dump;
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)
current_pass = pass;
- /* See if we're supposed to run this pass. */
- if (pass->gate && !pass->gate ())
- return false;
+ /* 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();
+
+ /* Override gate with plugin. */
+ invoke_plugin_callbacks (PLUGIN_OVERRIDE_GATE, &gate_status);
+
+ if (!gate_status)
+ {
+ current_pass = NULL;
+ return false;
+ }
+
+ /* Pass execution event trigger: useful to identify passes being
+ executed. */
+ invoke_plugin_callbacks (PLUGIN_PASS_EXECUTION, pass);
if (!quiet_flag && !cfun)
fprintf (stderr, " <%s>", pass->name ? pass->name : "");
execute_todo (todo_after | pass->todo_flags_finish);
verify_interpass_invariants ();
if (pass->type == IPA_PASS)
- do_per_function (add_ipa_transform_pass, pass);
+ {
+ struct cgraph_node *node;
+ for (node = cgraph_nodes; node; node = node->next)
+ if (node->analyzed)
+ VEC_safe_push (ipa_opt_pass, heap, node->ipa_transforms_to_apply,
+ (struct ipa_opt_pass_d *)pass);
+ }
if (!current_function_decl)
cgraph_process_new_functions ();
cgraph_node_set set;
struct cgraph_node **order;
int i, order_pos;
-
+
if (!flag_generate_lto || errorcount || sorrycount)
return;
gcc_assert (order_pos == cgraph_n_nodes);
for (i = order_pos - 1; i >= 0; i--)
- cgraph_node_set_add (set, order[i]);
+ {
+ struct cgraph_node *node = order[i];
+
+ if (node->analyzed)
+ {
+ /* When streaming out references to statements as part of some IPA
+ pass summary, the statements need to have uids assigned and the
+ following does that for all the IPA passes here. Naturally, this
+ ordering then matches the one IPA-passes get in their stmt_fixup
+ hooks. */
+
+ push_cfun (DECL_STRUCT_FUNCTION (node->decl));
+ renumber_gimple_stmt_uids ();
+ pop_cfun ();
+ }
+ cgraph_node_set_add (set, node);
+ }
ipa_write_summaries_1 (set);
lto_delete_extern_inline_states ();
if (execute_one_pass (pass) && pass->sub)
{
if (pass->sub->type == GIMPLE_PASS)
- do_per_function_toporder ((void (*)(void *))execute_pass_list,
- pass->sub);
+ {
+ 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);
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");
}
void
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