re PR middle-end/49596 (FAIL: gcc.dg/torture/pr43879_1.c)

2011-07-01  Richard Guenther  <rguenther@suse.de>

	PR middle-end/49596
	* cgraph.h (varpool_all_refs_explicit_p): Not analyzed nodes
	may have unknown refs.

From-SVN: r175753

gcc/ChangeLog

+2011-07-01  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/49596
+	* cgraph.h (varpool_all_refs_explicit_p): Not analyzed nodes
+	may have unknown refs.
+
 2011-07-01  Kai Tietz  <ktietz@redhat.com>
 
 	* tree-ssa-forwprop.c (simplify_bitwise_binary): Fix typo.

gcc/cgraph.h

@@ -947,7 +947,8 @@ varpool_can_remove_if_no_refs (struct varpool_node *node)
 static inline bool
 varpool_all_refs_explicit_p (struct varpool_node *vnode)
 {
-  return (!vnode->externally_visible
+  return (vnode->analyzed
+	  && !vnode->externally_visible
 	  && !vnode->used_from_other_partition
 	  && !vnode->force_output);
 }