--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeData.java	Fri Sep 06 16:11:15 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeData.java	Fri Sep 06 16:16:40 2013 +0200
@@ -32,7 +32,7 @@
 import com.oracle.truffle.dsl.processor.template.*;
 import com.oracle.truffle.dsl.processor.typesystem.*;
 
-public class NodeData extends Template {
+public class NodeData extends Template implements Comparable<NodeData> {
 
     private final String nodeId;
     private NodeData declaringNode;
@@ -90,6 +90,15 @@
         return false;
     }
 
+    public boolean needsImplicitCast(ProcessorContext context) {
+        for (NodeChildData child : getChildren()) {
+            if (child.needsImplicitCast(context)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     public int getPolymorphicDepth() {
         return polymorphicDepth;
     }
@@ -574,4 +583,7 @@
         return null;
     }
 
+    public int compareTo(NodeData o) {
+        return getNodeId().compareTo(o.getNodeId());
+    }
 }