Merge cellspace into old pointer space

src/hydrogen-instructions.h

 // 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.
 
 #ifndef V8_HYDROGEN_INSTRUCTIONS_H_
 #define V8_HYDROGEN_INSTRUCTIONS_H_
 
 #include <cstring>
 #include <iosfwd>
 
@@ skipping 5688 matching lines @@
       && !(value->IsConstant() && HConstant::cast(value)->ImmortalImmovable());
 }
 
 
 inline bool ReceiverObjectNeedsWriteBarrier(HValue* object,
                                             HValue* value,
                                             HValue* dominator) {
   while (object->IsInnerAllocatedObject()) {
     object = HInnerAllocatedObject::cast(object)->base_object();
   }
-  if (object->IsConstant() && HConstant::cast(object)->IsCell()) {
-    return false;
-  }
   if (object->IsConstant() &&
       HConstant::cast(object)->HasExternalReferenceValue()) {
     // Stores to external references require no write barriers
     return false;
   }
   // We definitely need a write barrier unless the object is the allocation
   // dominator.
   if (object == dominator && object->IsAllocate()) {
     // Stores to new space allocations require no write barriers.
     if (HAllocate::cast(object)->IsNewSpaceAllocation()) {
@@ skipping 2154 matching lines @@
 };
 
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_