X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firopt.c;h=4fc0169aa03e8ecfbbd4038809d7cbc981c15fbd;hb=203717b8dd44597fb10c126b33a28528a2432e9c;hp=915af89aebff8fc44f1521a19ce1932fef182472;hpb=9df286062f3d9b8b3df7cca7d4e95ae2b406a15f;p=libfirm

diff --git a/ir/ir/iropt.c b/ir/ir/iropt.c
index 915af89ae..4fc0169aa 100644
--- a/ir/ir/iropt.c
+++ b/ir/ir/iropt.c
@@ -2937,7 +2937,8 @@ static ir_node *transform_bitwise_distributive(ir_node *n,
 		ir_node *b_left  = get_binop_left(b);
 		ir_node *b_right = get_binop_right(b);
 		ir_node *c       = NULL;
-		ir_node *op1, *op2;
+		ir_node *op1     = NULL;
+		ir_node *op2     = NULL;
 
 		if (is_op_commutative(op)) {
 			if (a_left == b_left) {
@@ -4667,6 +4668,12 @@ static ir_node *transform_node_Conv(ir_node *n) {
 			return c;
 		}
 	}
+
+	if (is_Unknown(a)) { /* Conv_A(Unknown_B) -> Unknown_A */
+		ir_mode *mode = get_irn_mode(n);
+		return new_r_Unknown(current_ir_graph, mode);
+	}
+
 	return n;
 }  /* transform_node_Conv */