gimple-fold.c (canonicalize_constructor_val): Make sure we have referenced vars…

gimple-fold.c (canonicalize_constructor_val): Make sure we have referenced vars setup before adding to them.

2011-11-08  Richard Guenther  <rguenther@suse.de>

	* gimple-fold.c (canonicalize_constructor_val): Make sure
	we have referenced vars setup before adding to them.

From-SVN: r181155

gcc/ChangeLog

+2011-11-08  Richard Guenther  <rguenther@suse.de>
+
+	* gimple-fold.c (canonicalize_constructor_val): Make sure
+	we have referenced vars setup before adding to them.
+
 2011-11-07  Richard Henderson  <rth@redhat.com>
 	    Aldy Hernandez  <aldyh@redhat.com>
 	    Andrew MacLeod  <amacleod@redhat.com>

gcc/gimple-fold.c

@@ -137,7 +137,8 @@ canonicalize_constructor_val (tree cval)
 	      || TREE_CODE (base) == FUNCTION_DECL)
 	  && !can_refer_decl_in_current_unit_p (base))
 	return NULL_TREE;
-      if (cfun && base && TREE_CODE (base) == VAR_DECL)
+      if (cfun && gimple_referenced_vars (cfun)
+	  && base && TREE_CODE (base) == VAR_DECL)
 	add_referenced_var (base);
       /* Fixup types in global initializers.  */
       if (TREE_TYPE (TREE_TYPE (cval)) != TREE_TYPE (TREE_OPERAND (cval, 0)))