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

src/regexp-macro-assembler-irregexp.cc

 // Copyright 2008-2009 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 461 matching lines @@
   return array;
 }
 
 
 int RegExpMacroAssemblerIrregexp::length() {
   return pc_;
 }
 
 
 void RegExpMacroAssemblerIrregexp::Copy(Address a) {
-  memcpy(a, buffer_.start(), length());
+  OS::MemCopy(a, buffer_.start(), length());
 }
 
 
 void RegExpMacroAssemblerIrregexp::Expand() {
   bool old_buffer_was_our_own = own_buffer_;
   Vector<byte> old_buffer = buffer_;
   buffer_ = Vector<byte>::New(old_buffer.length() * 2);
   own_buffer_ = true;
-  memcpy(buffer_.start(), old_buffer.start(), old_buffer.length());
+  OS::MemCopy(buffer_.start(), old_buffer.start(), old_buffer.length());
   if (old_buffer_was_our_own) {
     old_buffer.Dispose();
   }
 }
 
 #endif  // V8_INTERPRETED_REGEXP
 
 } }  // namespace v8::internal