Fixed fehler176.

[r27122]

diff --git a/ir/opt/convopt.c b/ir/opt/convopt.c
index 653ef1d..a143159 100644 (file)
--- a/ir/opt/convopt.c
+++ b/ir/opt/convopt.c
@@ -138,6 +138,12 @@ static int get_conv_costs(const ir_node *node, ir_mode *dest_mode)
        }
 
        if (is_Conv(node)) {
+               ir_node *pred      = get_Conv_op(node);
+               ir_mode *pred_mode = get_irn_mode(pred);
+
+               if (!values_in_mode(dest_mode, pred_mode)) {
+                       return 1;
+               }
                return get_conv_costs(get_Conv_op(node), dest_mode) - 1;
        }
 
@@ -197,6 +203,12 @@ static ir_node *conv_transform(ir_node *node, ir_mode *dest_mode)
        }
 
        if (is_Conv(node)) {
+               ir_node *pred      = get_Conv_op(node);
+               ir_mode *pred_mode = get_irn_mode(pred);
+
+               if (!values_in_mode(dest_mode, pred_mode)) {
+                       return place_conv(node, dest_mode);
+               }
                return conv_transform(get_Conv_op(node), dest_mode);
        }