Another fix for Linux64 compilation.

src/profile-generator.cc

 // Copyright 2011 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 2798 matching lines @@
   SetRootNativeRootsReference();
   filler_ = NULL;
   return true;
 }
 
 
 class NativeGroupRetainedObjectInfo : public v8::RetainedObjectInfo {
  public:
   explicit NativeGroupRetainedObjectInfo(const char* label)
       : disposed_(false),
-        hash_(reinterpret_cast<int>(label)),
+        hash_(reinterpret_cast<intptr_t>(label)),
         label_(label) {
   }
 
   virtual ~NativeGroupRetainedObjectInfo() {}
   virtual void Dispose() {
     CHECK(!disposed_);
     disposed_ = true;
   }
   virtual bool IsEquivalent(RetainedObjectInfo* other) {
     return hash_ == other->GetHash() && !strcmp(label_, other->GetLabel());
@@ skipping 829 matching lines @@
 
 
 void HeapSnapshotJSONSerializer::SortHashMap(
     HashMap* map, List<HashMap::Entry*>* sorted_entries) {
   for (HashMap::Entry* p = map->Start(); p != NULL; p = map->Next(p))
     sorted_entries->Add(p);
   sorted_entries->Sort(SortUsingEntryValue);
 }
 
 } }  // namespace v8::internal