--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/java/ClassIsAssignableFromNode.java	2017-03-20 17:40:52.000000000 -0700
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/java/ClassIsAssignableFromNode.java	2017-03-20 17:40:52.000000000 -0700
@@ -55,11 +55,11 @@
         super(TYPE, thisClass, otherClass);
     }
 
-    public Object getThisClass() {
+    public ValueNode getThisClass() {
         return getX();
     }
 
-    public Object getOtherClass() {
+    public ValueNode getOtherClass() {
         return getY();
     }
 
@@ -82,12 +82,12 @@
     }
 
     @Override
-    public Stamp getSucceedingStampForX(boolean negated) {
+    public Stamp getSucceedingStampForX(boolean negated, Stamp xStamp, Stamp yStamp) {
         return null;
     }
 
     @Override
-    public Stamp getSucceedingStampForY(boolean negated) {
+    public Stamp getSucceedingStampForY(boolean negated, Stamp xStamp, Stamp yStamp) {
         return null;
     }