Directly store the transition target on LookupResult in TransitionResult.

src/property.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 17 matching lines @@
 #include "v8.h"
 
 namespace v8 {
 namespace internal {
 
 
 void LookupResult::Iterate(ObjectVisitor* visitor) {
   LookupResult* current = this;  // Could be NULL.
   while (current != NULL) {
     visitor->VisitPointer(BitCast<Object**>(&current->holder_));
+    visitor->VisitPointer(BitCast<Object**>(&current->transition_));
     current = current->next_;
   }
 }
 
 
 #ifdef OBJECT_PRINT
 void LookupResult::Print(FILE* out) {
   if (!IsFound()) {
     PrintF(out, "Not Found\n");
     return;
@@ skipping 27 matching lines @@
       PrintF(out, " -type = lookup proxy\n");
       break;
     case INTERCEPTOR:
       PrintF(out, " -type = lookup interceptor\n");
       break;
     case TRANSITION:
       switch (GetTransitionDetails().type()) {
         case FIELD:
           PrintF(out, " -type = map transition\n");
           PrintF(out, " -map:\n");
-          GetTransitionMap()->Print(out);
+          GetTransitionTarget()->Print(out);
           PrintF(out, "\n");
           return;
         case CONSTANT:
           PrintF(out, " -type = constant property transition\n");
           PrintF(out, " -map:\n");
-          GetTransitionMap()->Print(out);
+          GetTransitionTarget()->Print(out);
           PrintF(out, "\n");
           return;
         case CALLBACKS:
           PrintF(out, " -type = callbacks transition\n");
           PrintF(out, " -callback object:\n");
           GetCallbackObject()->Print(out);
           return;
         default:
           UNREACHABLE();
           return;
@@ skipping 10 matching lines @@
   GetKey()->ShortPrint(out);
   PrintF(out, " @ ");
   GetValue()->ShortPrint(out);
 }
 
 
 #endif
 
 
 } }  // namespace v8::internal