[Bug middle-end/49378] [4.7 Regression] C++ is broken

[hubicka at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49378

--- Comment #3 from Jan Hubicka <hubicka at gcc dot gnu.org> 2011-06-12 14:41:18 UTC ---
Hi,
looks like I have the lucky kernel. 

I think the problem is that we now mark as local thunks that are not having
address taken that makes i386 BE to use register passing conventions.

Does the following patch help?

Index: ipa.c
===================================================================
--- ipa.c       (revision 174958)
+++ ipa.c       (working copy)
@@ -120,6 +120,7 @@ static bool
 cgraph_non_local_node_p_1 (struct cgraph_node *node, void *data
ATTRIBUTE_UNUSED)
 {
    return !(cgraph_only_called_directly_or_aliased_p (node)
+           && !ipa_ref_has_aliases_p (&node->ref_list)
            && node->analyzed
            && !DECL_EXTERNAL (node->decl)
            && !node->local.externally_visible
@@ -132,7 +133,11 @@ cgraph_non_local_node_p_1 (struct cgraph
 static bool
 cgraph_local_node_p (struct cgraph_node *node)
 {
-   return !cgraph_for_node_and_aliases (cgraph_function_or_thunk_node (node,
NULL),
+   struct cgraph_node *n = cgraph_function_or_thunk_node (node, NULL);
+   
+   if (n->thunk.thunk_p)
+     return false;
+   return !cgraph_for_node_and_aliases (n,
                                        cgraph_non_local_node_p_1, NULL, true);

 }