make sure that is comparisons with PythonBuiltinClassType works

Author: timfel

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/expression/IsExpressionNode.java

@@ -42,10 +42,12 @@
 
 import static com.oracle.graal.python.nodes.SpecialMethodNames.__EQ__;
 
+import com.oracle.graal.python.builtins.PythonBuiltinClassType;
 import com.oracle.graal.python.builtins.objects.cext.CExtNodes;
 import com.oracle.graal.python.builtins.objects.cext.PythonAbstractNativeObject;
 import com.oracle.graal.python.builtins.objects.code.PCode;
 import com.oracle.graal.python.builtins.objects.ints.PInt;
+import com.oracle.graal.python.builtins.objects.type.PythonBuiltinClass;
 import com.oracle.truffle.api.RootCallTarget;
 import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.dsl.Fallback;
@@ -175,6 +177,16 @@ boolean doDD(double left, double right) {
             return left == right;
         }
 
+        @Specialization
+        boolean doCT(PythonBuiltinClass left, PythonBuiltinClassType right) {
+            return left.getType() == right;
+        }
+
+        @Specialization
+        boolean doTC(PythonBuiltinClassType left, PythonBuiltinClass right) {
+            return right.getType() == left;
+        }
+
         @Specialization
         boolean doNative(PythonAbstractNativeObject left, PythonAbstractNativeObject right,
                         @Cached CExtNodes.PointerCompareNode isNode) {