Fix x64 compilation error in r4673.

src/profile-generator.cc

 // Copyright 2010 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 527 matching lines @@
 }
 
 
 CpuProfile* CpuProfilesCollection::GetProfile(int security_token_id,
                                               unsigned uid) {
   HashMap::Entry* entry = profiles_uids_.Lookup(reinterpret_cast<void*>(uid),
                                                 static_cast<uint32_t>(uid),
                                                 false);
   int index;
   if (entry != NULL) {
-    index = reinterpret_cast<int>(entry->value);
+    index = static_cast<int>(reinterpret_cast<intptr_t>(entry->value));
   } else {
     return NULL;
   }
   List<CpuProfile*>* unabridged_list =
       profiles_by_token_[TokenToIndex(CodeEntry::kNoSecurityToken)];
   if (security_token_id == CodeEntry::kNoSecurityToken) {
     return unabridged_list->at(index);
   }
   List<CpuProfile*>* list = GetProfilesList(security_token_id);
   if (list->at(index) == NULL) {
@@ skipping 242 matching lines @@
       *entry++ = EntryForVMState(sample.state);
     }
   }
 
   profiles_->AddPathToCurrentProfiles(entries);
 }
 
 } }  // namespace v8::internal
 
 #endif  // ENABLE_LOGGING_AND_PROFILING