Replace OS::MemCopy with OS::MemMove (just as fast but more flexible).

src/serialize.h

 // 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 293 matching lines @@
   Advance(bytes);
   uint32_t mask = 0xffffffffu;
   mask >>= 32 - (bytes << 3);
   answer &= mask;
   answer >>= 2;
   return answer;
 }
 
 
 void SnapshotByteSource::CopyRaw(byte* to, int number_of_bytes) {
-  memcpy(to, data_ + position_, number_of_bytes);
+  OS::MemCopy(to, data_ + position_, number_of_bytes);
   position_ += number_of_bytes;
 }
 
 
 // A Deserializer reads a snapshot and reconstructs the Object graph it defines.
 class Deserializer: public SerializerDeserializer {
  public:
   // Create a deserializer from a snapshot byte source.
   explicit Deserializer(SnapshotByteSource* source);
 
@@ skipping 329 matching lines @@
  private:
   virtual bool ShouldBeInThePartialSnapshotCache(HeapObject* o) {
     return false;
   }
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_SERIALIZE_H_