[turbofan] Change number operations to handle Undefined as well.

src/compiler/representation-change.cc

Index: src/compiler/representation-change.cc
diff --git a/src/compiler/representation-change.cc b/src/compiler/representation-change.cc
index fedf7afc0e96dc4fb79760d7b4150104b7a8e676..10c8c82ce3e917b8b535b8c6204c361ef29104b5 100644
--- a/src/compiler/representation-change.cc
+++ b/src/compiler/representation-change.cc
@@ -305,7 +305,7 @@ Node* RepresentationChanger::GetFloat64RepresentationFor(
       op = machine()->ChangeUint32ToFloat64();
     }
   } else if (output_rep == MachineRepresentation::kTagged) {
-    if (output_type->Is(Type::Number())) {
+    if (output_type->Is(Type::NumberOrUndefined())) {
       op = simplified()->ChangeTaggedToFloat64();
     }
   } else if (output_rep == MachineRepresentation::kFloat32) {