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ipa-visibility.c (can_replace_by_local_alias): Make static, check ASM_OUTPUT_DEF.

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* ipa-visibility.c (can_replace_by_local_alias): Make static,
	check ASM_OUTPUT_DEF.
	(can_replace_by_local_alias_in_vtable): Make static.
	(function_and_variable_visibility): Reformat overlong comment.

From-SVN: r231721
This commit is contained in:
Nathan Sidwell 2015-12-16 21:05:39 +00:00 • committed by Nathan Sidwell
parent 60b5526fd6
commit f95ff97f09
2 changed files with 19 additions and 7 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2015-12-16 Nathan Sidwell <nathan@acm.org>
* ipa-visibility.c (can_replace_by_local_alias): Make static,
check ASM_OUTPUT_DEF.
(can_replace_by_local_alias_in_vtable): Make static.
(function_and_variable_visibility): Reformat overlong comment.
2015-12-16 Jeff Law <law@redhat.com>
* ree.c (add_removable_extension): Use reg_overlap_mentioned_p

19
gcc/ipa-visibility.c
View file

@ -329,9 +329,13 @@ varpool_node::externally_visible_p (void)
Local aliases save dynamic linking overhead and enable more optimizations.
*/
bool
static bool
can_replace_by_local_alias (symtab_node *node)
{
#ifndef ASM_OUTPUT_DEF
/* If aliases aren't supported, we can't do replacement. */
return false;
#endif
/* Weakrefs have a reason to be non-local. Be sure we do not replace
them. */
while (node->transparent_alias && node->definition && !node->weakref)
@ -344,11 +348,11 @@ can_replace_by_local_alias (symtab_node *node)
&& !node->can_be_discarded_p ());
}
/* Return true if we can replace refernece to NODE by local alias
/* Return true if we can replace reference to NODE by local alias
within a virtual table. Generally we can replace function pointers
and virtual table pointers. */
bool
static bool
can_replace_by_local_alias_in_vtable (symtab_node *node)
{
if (is_a <varpool_node *> (node)
@ -592,10 +596,11 @@ function_and_variable_visibility (bool whole_program)
if (!node->local.local)
node->local.local |= node->local_p ();
/* If we know that function can not be overwritten by a different semantics
and moreover its section can not be discarded, replace all direct calls
by calls to an noninterposable alias. This make dynamic linking
cheaper and enable more optimization.
/* If we know that function can not be overwritten by a
different semantics and moreover its section can not be
discarded, replace all direct calls by calls to an
noninterposable alias. This make dynamic linking cheaper and
enable more optimization.
TODO: We can also update virtual tables. */
if (node->callers