Infer HConstant::NotInNewSpace only if the supplied handle is null.

src/hydrogen-instructions.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/base/bits.h"
 #include "src/double.h"
 #include "src/factory.h"
 #include "src/hydrogen-infer-representation.h"
@@ skipping 2851 matching lines @@
       r = Representation::Tagged();
     }
   }
   if (r.IsSmi()) {
     // If we have an existing handle, zap it, because it might be a heap
     // number which we must not re-use when copying this HConstant to
     // Tagged representation later, because having Smi representation now
     // could cause heap object checks not to get emitted.
     object_ = Unique<Object>(Handle<Object>::null());
   }
-  if (r.IsSmiOrInteger32()) {
+  if (r.IsSmiOrInteger32() && object_.handle().is_null()) {
     // If it's not a heap object, it can't be in new space.
     bit_field_ = IsNotInNewSpaceField::update(bit_field_, true);
   }
   set_representation(r);
   SetFlag(kUseGVN);
 }
 
 
 bool HConstant::ImmortalImmovable() const {
   if (HasInteger32Value()) {
@@ skipping 1933 matching lines @@
       break;
     case HObjectAccess::kExternalMemory:
       os << "[external-memory]";
       break;
   }
 
   return os << "@" << access.offset();
 }
 
 } }  // namespace v8::internal