Fix dealing with NotImplemented in __divmod__

Author: msimacek

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/floats/FloatBuiltins.java

@@ -623,12 +623,22 @@ PTuple doLD(long left, double right) {
             return factory().createTuple(new Object[]{Math.floor(left / right), left % right});
         }
 
-        @Specialization
-        PTuple doGeneric(VirtualFrame frame, Object left, Object right,
+        @Specialization(guards = {"accepts(left)", "accepts(right)"})
+        PTuple doGenericFloat(VirtualFrame frame, Object left, Object right,
                         @Cached FloorDivNode floorDivNode,
                         @Cached ModNode modNode) {
             return factory().createTuple(new Object[]{floorDivNode.execute(frame, left, right), modNode.execute(frame, left, right)});
         }
+
+        @SuppressWarnings("unused")
+        @Fallback
+        PNotImplemented doGeneric(Object left, Object right) {
+            return PNotImplemented.NOT_IMPLEMENTED;
+        }
+
+        protected static boolean accepts(Object obj) {
+            return obj instanceof Double || obj instanceof Integer || obj instanceof Long || obj instanceof PInt;
+        }
     }
 
     @Builtin(name = SpecialMethodNames.__HASH__, minNumOfPositionalArgs = 1)

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/ints/IntBuiltins.java

@@ -507,12 +507,22 @@ PTuple doLL(long left, long right) {
             return factory().createTuple(new Object[]{Math.floorDiv(left, right), Math.floorMod(left, right)});
         }
 
-        @Specialization
-        PTuple doGeneric(VirtualFrame frame, Object left, Object right,
+        @Specialization(guards = {"accepts(left)", "accepts(right)"})
+        PTuple doGenericInt(VirtualFrame frame, Object left, Object right,
                         @Cached FloorDivNode floorDivNode,
                         @Cached ModNode modNode) {
             return factory().createTuple(new Object[]{floorDivNode.execute(frame, left, right), modNode.execute(frame, left, right)});
         }
+
+        @SuppressWarnings("unused")
+        @Fallback
+        PNotImplemented doGeneric(Object left, Object right) {
+            return PNotImplemented.NOT_IMPLEMENTED;
+        }
+
+        protected static boolean accepts(Object obj) {
+            return obj instanceof Integer || obj instanceof Long || obj instanceof PInt;
+        }
     }
 
     @Builtin(name = SpecialMethodNames.__MOD__, minNumOfPositionalArgs = 2)