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

src/jsregexp.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 606 matching lines @@
   }
   Handle<ByteArray> byte_codes(IrregexpByteCode(*irregexp, is_ascii), isolate);
 
   IrregexpResult result = IrregexpInterpreter::Match(isolate,
                                                      byte_codes,
                                                      subject,
                                                      raw_output,
                                                      index);
   if (result == RE_SUCCESS) {
     // Copy capture results to the start of the registers array.
-    memcpy(output, raw_output, number_of_capture_registers * sizeof(int32_t));
+    OS::MemCopy(
+        output, raw_output, number_of_capture_registers * sizeof(int32_t));
   }
   if (result == RE_EXCEPTION) {
     ASSERT(!isolate->has_pending_exception());
     isolate->StackOverflow();
   }
   return result;
 #endif  // V8_INTERPRETED_REGEXP
 }
 
 
@@ skipping 5483 matching lines @@
   }
 
   return compiler.Assemble(&macro_assembler,
                            node,
                            data->capture_count,
                            pattern);
 }
 
 
 }}  // namespace v8::internal