If privitized symbol needs to be made public, it is renamed.
That is not possible for symbols referenced from assembly.
Thus we forbid privatization of those symbols.
gcc/ChangeLog:
* cgraph.h (cgraph_node::only_called_directly_or_aliased_p):
Consider referenced_from_asm.
* ipa-visibility.cc (non_local_p): Likewise.
(cgraph_externally_visible_p): Likewise.
(varpool_node::externally_visible_p): Likewise.
---
gcc/cgraph.h | 1 +
gcc/ipa-visibility.cc | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/gcc/cgraph.h b/gcc/cgraph.h
index 53b8e1d0e37..069392cf131 100644
--- a/gcc/cgraph.h
+++ b/gcc/cgraph.h
@@ -3213,6 +3213,7 @@ cgraph_node::only_called_directly_or_aliased_p (void)
&& !DECL_STATIC_CONSTRUCTOR (decl)
&& !DECL_STATIC_DESTRUCTOR (decl)
&& !used_from_object_file_p ()
+ && !referenced_from_asm
&& !externally_visible);
}
diff --git a/gcc/ipa-visibility.cc b/gcc/ipa-visibility.cc
index 8097a03e240..70bdaf4ce34 100644
--- a/gcc/ipa-visibility.cc
+++ b/gcc/ipa-visibility.cc
@@ -100,6 +100,7 @@ non_local_p (struct cgraph_node *node, void *data
ATTRIBUTE_UNUSED)
&& !DECL_EXTERNAL (node->decl)
&& !lookup_attribute ("noipa", DECL_ATTRIBUTES (node->decl))
&& !node->externally_visible
+ && !node->referenced_from_asm
&& !node->used_from_other_partition
&& !node->in_other_partition
&& node->get_availability () >= AVAIL_AVAILABLE
@@ -198,6 +199,8 @@ cgraph_externally_visible_p (struct cgraph_node *node,
if (!TREE_PUBLIC (node->decl)
|| DECL_EXTERNAL (node->decl))
return false;
+ if (node->referenced_from_asm)
+ return true;
/* Do not try to localize built-in functions yet. One of problems is that we
end up mangling their asm for WHOPR that makes it impossible to call them
@@ -269,6 +272,8 @@ varpool_node::externally_visible_p (void)
if (!TREE_PUBLIC (decl))
return false;
+ if (referenced_from_asm)
+ return true;
/* If linker counts on us, we must preserve the function. */
if (used_from_object_file_p ())
--
2.50.0
