[turbofan] Introduce proper ObjectIsReceiver operator.

test/unittests/compiler/simplified-operator-unittest.cc

Index: test/unittests/compiler/simplified-operator-unittest.cc
diff --git a/test/unittests/compiler/simplified-operator-unittest.cc b/test/unittests/compiler/simplified-operator-unittest.cc
index 45ca9cb230b09d2c817e0ad1e488eb43c39297d2..bd8509ff9729262993b9a716e135601d10be7bb5 100644
--- a/test/unittests/compiler/simplified-operator-unittest.cc
+++ b/test/unittests/compiler/simplified-operator-unittest.cc
@@ -65,6 +65,8 @@ const PureOperator kPureOperators[] = {
     PURE(ChangeFloat64ToTagged, Operator::kNoProperties, 1),
     PURE(ChangeBoolToBit, Operator::kNoProperties, 1),
     PURE(ChangeBitToBool, Operator::kNoProperties, 1),
+    PURE(ObjectIsNumber, Operator::kNoProperties, 1),
+    PURE(ObjectIsReceiver, Operator::kNoProperties, 1),
     PURE(ObjectIsSmi, Operator::kNoProperties, 1)
 #undef PURE
 };