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

src/utils.cc

 // Copyright 2011 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 10 matching lines @@
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <stdarg.h>
 #include "../include/v8stdint.h"
 #include "checks.h"
+#include "platform.h"
 #include "utils.h"
 
 namespace v8 {
 namespace internal {
 
 
 SimpleStringBuilder::SimpleStringBuilder(int size) {
   buffer_ = Vector<char>::New(size);
   position_ = 0;
 }
 
 
 void SimpleStringBuilder::AddString(const char* s) {
   AddSubstring(s, StrLength(s));
 }
 
 
 void SimpleStringBuilder::AddSubstring(const char* s, int n) {
   ASSERT(!is_finalized() && position_ + n < buffer_.length());
   ASSERT(static_cast<size_t>(n) <= strlen(s));
-  memcpy(&buffer_[position_], s, n * kCharSize);
+  OS::MemCopy(&buffer_[position_], s, n * kCharSize);
   position_ += n;
 }
 
 
 void SimpleStringBuilder::AddPadding(char c, int count) {
   for (int i = 0; i < count; i++) {
     AddCharacter(c);
   }
 }
 
@@ skipping 36 matching lines @@
     case 9:    return DivMagicNumberFor9;
     case 11:   return DivMagicNumberFor11;
     case 25:   return DivMagicNumberFor25;
     case 125:  return DivMagicNumberFor125;
     case 625:  return DivMagicNumberFor625;
     default:   return InvalidDivMagicNumber;
   }
 }
 
 } }  // namespace v8::internal