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

test/cctest/test-api.cc

 // 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 12777 matching lines @@
 // Tests that ScriptData can be serialized and deserialized.
 TEST(PreCompileSerialization) {
   v8::V8::Initialize();
   const char* script = "function foo(a) { return a+1; }";
   v8::ScriptData* sd =
       v8::ScriptData::PreCompile(script, i::StrLength(script));
 
   // Serialize.
   int serialized_data_length = sd->Length();
   char* serialized_data = i::NewArray<char>(serialized_data_length);
-  memcpy(serialized_data, sd->Data(), serialized_data_length);
+  i::OS::MemCopy(serialized_data, sd->Data(), serialized_data_length);
 
   // Deserialize.
   v8::ScriptData* deserialized_sd =
       v8::ScriptData::New(serialized_data, serialized_data_length);
 
   // Verify that the original is the same as the deserialized.
   CHECK_EQ(sd->Length(), deserialized_sd->Length());
   CHECK_EQ(0, memcmp(sd->Data(), deserialized_sd->Data(), sd->Length()));
   CHECK_EQ(sd->HasError(), deserialized_sd->HasError());
 
@@ skipping 2919 matching lines @@
   CHECK(string3->IsExternal());
 
   VisitorImpl visitor(resource);
   v8::V8::VisitExternalResources(&visitor);
   visitor.CheckVisitedResources();
 }
 
 
 static double DoubleFromBits(uint64_t value) {
   double target;
-  memcpy(&target, &value, sizeof(target));
+  i::OS::MemCopy(&target, &value, sizeof(target));
   return target;
 }
 
 
 static uint64_t DoubleToBits(double value) {
   uint64_t target;
-  memcpy(&target, &value, sizeof(target));
+  i::OS::MemCopy(&target, &value, sizeof(target));
   return target;
 }
 
 
 static double DoubleToDateTime(double input) {
   double date_limit = 864e13;
   if (IsNaN(input) || input < -date_limit || input > date_limit) {
     return i::OS::nan_value();
   }
   return (input < 0) ? -(floor(-input)) : floor(input);
@@ skipping 2942 matching lines @@
   i::Semaphore* sem_;
   volatile int sem_value_;
 };
 
 
 THREADED_TEST(SemaphoreInterruption) {
   ThreadInterruptTest().RunTest();
 }
 
 #endif  // WIN32