X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fopt%2Fconvopt.c;h=43ac2d90aa2ae1ed236eb84ad6d10965b6f841e0;hb=a619ce99e40de4eb4481a590970a881e9f24627a;hp=653ef1d400ea056346683f713b8420636037f7f6;hpb=a7c6b3122cc7be047df0ceab4fe29b22fc88dff9;p=libfirm

diff --git a/ir/opt/convopt.c b/ir/opt/convopt.c
index 653ef1d40..43ac2d90a 100644
--- 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);
 	}
 
@@ -229,7 +241,7 @@ static void try_optimize_cmp(ir_node *node)
 	ir_node *right = get_Cmp_right(node);
 	ir_node *conv  = NULL;
 
-	if(is_downconv
+	if (is_downconv
 }
 #endif
 
@@ -243,7 +255,7 @@ static void conv_opt_walker(ir_node *node, void *data)
 	bool *changed = data;
 
 #if 0
-	if(is_Cmp(node)) {
+	if (is_Cmp(node)) {
 		try_optimize_cmp(node);
 		return;
 	}