Add default handling for outermost wrappers in voidify_wrapper_expr.

	gcc/
	* gimplify.c (voidify_wrapper_expr): Add default handling for
	outermost wrapper.

From-SVN: r182232

gcc/ChangeLog

 2011-12-12  Torvald Riegel  <triegel@redhat.com>
 
+	* gimplify.c (voidify_wrapper_expr): Add default handling for
+	outermost wrapper.
+
+2011-12-12  Torvald Riegel  <triegel@redhat.com>
+
 	* tree-ssa-tail-merge.c (gimple_equal_p): Don't treat transaction
 	commits as equal.
 

gcc/gimplify.c

@@ -1081,6 +1081,15 @@ voidify_wrapper_expr (tree wrapper, tree temp)
 	      break;
 
 	    default:
+	      /* Assume that any tree upon which voidify_wrapper_expr is
+		 directly called is a wrapper, and that its body is op0.  */
+	      if (p == &wrapper)
+		{
+		  TREE_SIDE_EFFECTS (*p) = 1;
+		  TREE_TYPE (*p) = void_type_node;
+		  p = &TREE_OPERAND (*p, 0);
+		  break;
+		}
 	      goto out;
 	    }
 	}