same fix again on another place

[r16337]

diff --git a/ir/opt/reassoc.c b/ir/opt/reassoc.c
index d18719a..606b534 100644 (file)
--- a/ir/opt/reassoc.c
+++ b/ir/opt/reassoc.c
@@ -723,7 +723,8 @@ static void reverse_rules(ir_node *node, void *env) {
                if (is_op_commutative(op)) {
                        wenv->changes |= res = move_consts_up(&node);
                }
-               if (op == op_Add || op == op_Sub) {
+               /* beware: move_consts_up might have changed the opcode, check again */
+               if (is_Add(node) || is_Sub(node)) {
                        wenv->changes |= res = reverse_rule_distributive(&node);
                }
        } while (res);