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ipa-visibility.c (localize_node): New function, broken out of ...

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* ipa-visibility.c (localize_node): New function, broken out of	...
	(function_and_variable_visibility): ... here. Call it.

From-SVN: r244529
This commit is contained in:
Nathan Sidwell 2017-01-17 15:04:50 +00:00 committed by Nathan Sidwell
parent d4193b85ae
commit 408de159d4
2 changed files with 55 additions and 82 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2017-01-17 Nathan Sidwell <nathan@acm.org>
* ipa-visibility.c (localize_node): New function, broken out of ...
(function_and_variable_visibility): ... here. Call it.
2017-01-17 Jan Hubicka <hubicka@ucw.cz>
PR middle-end/77445

132
gcc/ipa-visibility.c
View File

@ -529,6 +529,53 @@ optimize_weakref (symtab_node *node)
gcc_assert (node->alias);
}
/* NODE is an externally visible definition, which we've discovered is
not needed externally. Make it local to this compilation. */
static void
localize_node (bool whole_program, symtab_node *node)
{
gcc_assert (whole_program || in_lto_p || !TREE_PUBLIC (node->decl));
if (node->same_comdat_group && TREE_PUBLIC (node->decl))
{
for (symtab_node *next = node->same_comdat_group;
next != node; next = next->same_comdat_group)
{
next->set_comdat_group (NULL);
if (!next->alias)
next->set_section (NULL);
if (!next->transparent_alias)
next->make_decl_local ();
next->unique_name
|= ((next->resolution == LDPR_PREVAILING_DEF_IRONLY
|| next->resolution == LDPR_PREVAILING_DEF_IRONLY_EXP)
&& TREE_PUBLIC (next->decl)
&& !flag_incremental_link);
}
/* Now everything's localized, the grouping has no meaning, and
will cause crashes if we keep it around. */
node->dissolve_same_comdat_group_list ();
}
node->unique_name
|= ((node->resolution == LDPR_PREVAILING_DEF_IRONLY
|| node->resolution == LDPR_PREVAILING_DEF_IRONLY_EXP)
&& TREE_PUBLIC (node->decl)
&& !flag_incremental_link);
if (TREE_PUBLIC (node->decl))
node->set_comdat_group (NULL);
if (DECL_COMDAT (node->decl) && !node->alias)
node->set_section (NULL);
if (!node->transparent_alias)
{
node->resolution = LDPR_PREVAILING_DEF_IRONLY;
node->make_decl_local ();
}
}
/* Decide on visibility of all symbols. */
static unsigned int
@ -606,48 +653,7 @@ function_and_variable_visibility (bool whole_program)
if (!node->externally_visible
&& node->definition && !node->weakref
&& !DECL_EXTERNAL (node->decl))
{
gcc_assert (whole_program || in_lto_p
|| !TREE_PUBLIC (node->decl));
node->unique_name
|= ((node->resolution == LDPR_PREVAILING_DEF_IRONLY
|| node->resolution == LDPR_PREVAILING_DEF_IRONLY_EXP)
&& TREE_PUBLIC (node->decl)
&& !flag_incremental_link);
node->resolution = LDPR_PREVAILING_DEF_IRONLY;
if (node->same_comdat_group && TREE_PUBLIC (node->decl))
{
symtab_node *next = node;
/* Set all members of comdat group local. */
for (next = node->same_comdat_group;
next != node;
next = next->same_comdat_group)
{
next->set_comdat_group (NULL);
if (!next->alias)
next->set_section (NULL);
if (!next->transparent_alias)
next->make_decl_local ();
next->unique_name
|= ((next->resolution == LDPR_PREVAILING_DEF_IRONLY
|| next->resolution == LDPR_PREVAILING_DEF_IRONLY_EXP)
&& TREE_PUBLIC (next->decl)
&& !flag_incremental_link);
}
/* cgraph_externally_visible_p has already checked all
other nodes in the group and they will all be made
local. We need to dissolve the group at once so that
the predicate does not segfault though. */
node->dissolve_same_comdat_group_list ();
}
if (TREE_PUBLIC (node->decl))
node->set_comdat_group (NULL);
if (DECL_COMDAT (node->decl) && !node->alias)
node->set_section (NULL);
if (!node->transparent_alias)
node->make_decl_local ();
}
localize_node (whole_program, node);
if (node->thunk.thunk_p
&& !node->thunk.add_pointer_bounds_args
@ -757,49 +763,11 @@ function_and_variable_visibility (bool whole_program)
if (lookup_attribute ("no_reorder",
DECL_ATTRIBUTES (vnode->decl)))
vnode->no_reorder = 1;
if (!vnode->externally_visible
&& !vnode->transparent_alias)
{
gcc_assert (in_lto_p || whole_program || !TREE_PUBLIC (vnode->decl));
vnode->unique_name |= ((vnode->resolution == LDPR_PREVAILING_DEF_IRONLY
|| vnode->resolution
== LDPR_PREVAILING_DEF_IRONLY_EXP)
&& TREE_PUBLIC (vnode->decl)
&& !flag_incremental_link);
if (vnode->same_comdat_group && TREE_PUBLIC (vnode->decl))
{
symtab_node *next = vnode;
localize_node (whole_program, vnode);
/* Set all members of comdat group local. */
if (vnode->same_comdat_group)
for (next = vnode->same_comdat_group;
next != vnode;
next = next->same_comdat_group)
{
next->set_comdat_group (NULL);
if (!next->alias)
next->set_section (NULL);
if (!next->transparent_alias)
{
next->make_decl_local ();
next->unique_name |= ((next->resolution == LDPR_PREVAILING_DEF_IRONLY
|| next->resolution == LDPR_PREVAILING_DEF_IRONLY_EXP)
&& TREE_PUBLIC (next->decl)
&& !flag_incremental_link);
}
}
vnode->dissolve_same_comdat_group_list ();
}
if (TREE_PUBLIC (vnode->decl))
vnode->set_comdat_group (NULL);
if (DECL_COMDAT (vnode->decl) && !vnode->alias)
vnode->set_section (NULL);
if (!vnode->transparent_alias)
{
vnode->make_decl_local ();
vnode->resolution = LDPR_PREVAILING_DEF_IRONLY;
}
}
update_visibility_by_resolution_info (vnode);
/* Update virtual tables to point to local aliases where possible. */