Make object groups and implicit references a bit more lightweight.

src/v8utils.h

 // 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 102 matching lines @@
 template <typename T>
 inline Vector< Handle<Object> > HandleVector(v8::internal::Handle<T>* elms,
                                              int length) {
   return Vector< Handle<Object> >(
       reinterpret_cast<v8::internal::Handle<Object>*>(elms), length);
 }
 
 // Memory
 
 // Copies data from |src| to |dst|.  The data spans MUST not overlap.
-inline void CopyWords(Object** dst, Object** src, int num_words) {
+template <typename T>
+inline void CopyWords(T* dst, T* src, int num_words) {
+  STATIC_ASSERT(sizeof(T) == kPointerSize);
   ASSERT(Min(dst, src) + num_words <= Max(dst, src));
   ASSERT(num_words > 0);
 
   // Use block copying memcpy if the segment we're copying is
   // enough to justify the extra call/setup overhead.
   static const int kBlockCopyLimit = 16;
 
   if (num_words >= kBlockCopyLimit) {
     memcpy(dst, src, num_words * kPointerSize);
   } else {
@@ skipping 174 matching lines @@
 
   const char* data_;
   size_t length_;
   bool remove_file_on_cleanup_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_V8UTILS_H_