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ipa-cp.c (ipcp_versionable_function_p): Thunks are not versionable. 

* ipa-cp.c (ipcp_versionable_function_p): Thunks are not versionable.
	(ipcp_initialize_node_lattices): Do not deal with aliases; Do not try to
	propagate through thunks.
	(ipcp_change_tops_to_bottom): Do not deal with aliases.

From-SVN: r174916
This commit is contained in:
Jan Hubicka 2011-06-10 18:49:28 +02:00 committed by Jan Hubicka
parent c8246dbe68
commit 0818c24cb0
2 changed files with 55 additions and 40 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2011-06-10 Jan Hubicka <jh@suse.cz>
* ipa-cp.c (ipcp_versionable_function_p): Thunks are not versionable.
(ipcp_initialize_node_lattices): Do not deal with aliases; Do not try to
propagate through thunks.
(ipcp_change_tops_to_bottom): Do not deal with aliases.
2011-06-10 Jan Hubicka <jh@suse.cz>
* ipa-prop.c (ipa_write_node_info): Stream jump functions for indirect

88
gcc/ipa-cp.c
View File

@ -354,6 +354,10 @@ ipcp_versionable_function_p (struct cgraph_node *node)
if (node->alias)
return false;
/* We don't know how to clone thunks. */
if (node->thunk.thunk_p)
return false;
/* There are a number of generic reasons functions cannot be versioned. We
also cannot remove parameters if there are type attributes such as fnspec
present. */
@ -507,9 +511,11 @@ ipcp_initialize_node_lattices (struct cgraph_node *node)
struct ipa_node_params *info = IPA_NODE_REF (node);
enum ipa_lattice_type type;
if (ipa_is_called_with_var_arguments (info) || node->alias)
if (ipa_is_called_with_var_arguments (info))
type = IPA_BOTTOM;
else if (node->local.local)
/* We don't know how to clone thunks even when they are local. */
else if (node->local.local
&& !node->thunk.thunk_p)
type = IPA_TOP;
/* When cloning is allowed, we can assume that externally visible functions
are not called. We will compensate this by cloning later. */
@ -592,40 +598,41 @@ ipcp_change_tops_to_bottom (void)
prop_again = false;
for (node = cgraph_nodes; node; node = node->next)
{
struct ipa_node_params *info = IPA_NODE_REF (node);
count = ipa_get_param_count (info);
for (i = 0; i < count; i++)
{
struct ipcp_lattice *lat = ipa_get_lattice (info, i);
if (lat->type == IPA_TOP)
{
prop_again = true;
if (dump_file)
{
fprintf (dump_file, "Forcing param ");
print_generic_expr (dump_file, ipa_get_param (info, i), 0);
fprintf (dump_file, " of node %s to bottom.\n",
cgraph_node_name (node));
}
lat->type = IPA_BOTTOM;
}
if (!ipa_param_cannot_devirtualize_p (info, i)
&& ipa_param_types_vec_empty (info, i))
{
prop_again = true;
ipa_set_param_cannot_devirtualize (info, i);
if (dump_file)
{
fprintf (dump_file, "Marking param ");
print_generic_expr (dump_file, ipa_get_param (info, i), 0);
fprintf (dump_file, " of node %s as unusable for "
"devirtualization.\n",
cgraph_node_name (node));
}
}
}
}
if (!node->alias)
{
struct ipa_node_params *info = IPA_NODE_REF (node);
count = ipa_get_param_count (info);
for (i = 0; i < count; i++)
{
struct ipcp_lattice *lat = ipa_get_lattice (info, i);
if (lat->type == IPA_TOP)
{
prop_again = true;
if (dump_file)
{
fprintf (dump_file, "Forcing param ");
print_generic_expr (dump_file, ipa_get_param (info, i), 0);
fprintf (dump_file, " of node %s to bottom.\n",
cgraph_node_name (node));
}
lat->type = IPA_BOTTOM;
}
if (!ipa_param_cannot_devirtualize_p (info, i)
&& ipa_param_types_vec_empty (info, i))
{
prop_again = true;
ipa_set_param_cannot_devirtualize (info, i);
if (dump_file)
{
fprintf (dump_file, "Marking param ");
print_generic_expr (dump_file, ipa_get_param (info, i), 0);
fprintf (dump_file, " of node %s as unusable for "
"devirtualization.\n",
cgraph_node_name (node));
}
}
}
}
return prop_again;
}
@ -813,10 +820,11 @@ ipcp_iterate_stage (void)
ipa_update_after_lto_read ();
for (node = cgraph_nodes; node; node = node->next)
{
ipcp_initialize_node_lattices (node);
ipcp_compute_node_scale (node);
}
if (!node->alias)
{
ipcp_initialize_node_lattices (node);
ipcp_compute_node_scale (node);
}
if (dump_file && (dump_flags & TDF_DETAILS))
{
ipcp_print_all_lattices (dump_file);