Do not mark the node as visited before transforming it. This is not necessary...

Do not mark the node as visited before transforming it.  This is not necessary anymore since Phis put their predecessors in a worklist, so we cannot walk in a circle.

[r22613]

ir/be/betranshlp.c

@@ -132,7 +132,6 @@ ir_node *be_transform_node(ir_node *node) {
 	if (new_node != NULL)
 		return new_node;
 
-	mark_irn_visited(node);
 	DEBUG_ONLY(be_set_transformed_node(node, NULL));
 
 	op = get_irn_op(node);