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

src/preparse-data.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 77 matching lines @@
 
 // ----------------------------------------------------------------------------
 // PartialParserRecorder -  Record both function entries and symbols.
 
 Vector<unsigned> PartialParserRecorder::ExtractData() {
   int function_size = function_store_.size();
   int total_size = PreparseDataConstants::kHeaderSize + function_size;
   Vector<unsigned> data = Vector<unsigned>::New(total_size);
   preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
   preamble_[PreparseDataConstants::kSymbolCountOffset] = 0;
-  memcpy(data.start(), preamble_, sizeof(preamble_));
+  OS::MemCopy(data.start(), preamble_, sizeof(preamble_));
   int symbol_start = PreparseDataConstants::kHeaderSize + function_size;
   if (function_size > 0) {
     function_store_.WriteTo(data.SubVector(PreparseDataConstants::kHeaderSize,
                                            symbol_start));
   }
   return data;
 }
 
 
 // ----------------------------------------------------------------------------
@@ skipping 35 matching lines @@
   // Add terminator to symbols, then pad to unsigned size.
   int symbol_size = symbol_store_.size();
   int padding = sizeof(unsigned) - (symbol_size % sizeof(unsigned));
   symbol_store_.AddBlock(padding, PreparseDataConstants::kNumberTerminator);
   symbol_size += padding;
   int total_size = PreparseDataConstants::kHeaderSize + function_size
       + (symbol_size / sizeof(unsigned));
   Vector<unsigned> data = Vector<unsigned>::New(total_size);
   preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
   preamble_[PreparseDataConstants::kSymbolCountOffset] = symbol_id_;
-  memcpy(data.start(), preamble_, sizeof(preamble_));
+  OS::MemCopy(data.start(), preamble_, sizeof(preamble_));
   int symbol_start = PreparseDataConstants::kHeaderSize + function_size;
   if (function_size > 0) {
     function_store_.WriteTo(data.SubVector(PreparseDataConstants::kHeaderSize,
                                            symbol_start));
   }
   if (!has_error()) {
     symbol_store_.WriteTo(
         Vector<byte>::cast(data.SubVector(symbol_start, total_size)));
   }
   return data;
 }
 
 
 void CompleteParserRecorder::WriteNumber(int number) {
   ASSERT(number >= 0);
 
   int mask = (1 << 28) - 1;
   for (int i = 28; i > 0; i -= 7) {
     if (number > mask) {
       symbol_store_.Add(static_cast<byte>(number >> i) | 0x80u);
       number &= mask;
     }
     mask >>= 7;
   }
   symbol_store_.Add(static_cast<byte>(number));
 }
 
 
 } }  // namespace v8::internal.