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

src/heap.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 670 matching lines @@
 
 
 void Heap::MoveElements(FixedArray* array,
                         int dst_index,
                         int src_index,
                         int len) {
   if (len == 0) return;
 
   ASSERT(array->map() != HEAP->fixed_cow_array_map());
   Object** dst_objects = array->data_start() + dst_index;
-  memmove(dst_objects,
-          array->data_start() + src_index,
-          len * kPointerSize);
+  OS::MemMove(dst_objects,
+              array->data_start() + src_index,
+              len * kPointerSize);
   if (!InNewSpace(array)) {
     for (int i = 0; i < len; i++) {
       // TODO(hpayer): check store buffer for entries
       if (InNewSpace(dst_objects[i])) {
         RecordWrite(array->address(), array->OffsetOfElementAt(dst_index + i));
       }
     }
   }
   incremental_marking()->RecordWrites(array);
 }
@@ skipping 4254 matching lines @@
     default: return NULL;  // No match found.
   }
 }
 
 
 static inline void WriteOneByteData(Vector<const char> vector,
                                     uint8_t* chars,
                                     int len) {
   // Only works for ascii.
   ASSERT(vector.length() == len);
-  memcpy(chars, vector.start(), len);
+  OS::MemCopy(chars, vector.start(), len);
 }
 
 static inline void WriteTwoByteData(Vector<const char> vector,
                                     uint16_t* chars,
                                     int len) {
   const uint8_t* stream = reinterpret_cast<const uint8_t*>(vector.start());
   unsigned stream_length = vector.length();
   while (stream_length != 0) {
     unsigned consumed = 0;
     uint32_t c = unibrow::Utf8::ValueOf(stream, stream_length, &consumed);
@@ skipping 2855 matching lines @@
       static_cast<int>(object_counts_[index]));           \
   counters->count_of_FIXED_ARRAY_##name()->Decrement(     \
       static_cast<int>(object_counts_last_time_[index])); \
   counters->size_of_FIXED_ARRAY_##name()->Increment(      \
       static_cast<int>(object_sizes_[index]));            \
   counters->size_of_FIXED_ARRAY_##name()->Decrement(      \
       static_cast<int>(object_sizes_last_time_[index]));
   FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(ADJUST_LAST_TIME_OBJECT_COUNT)
 #undef ADJUST_LAST_TIME_OBJECT_COUNT
 
-  memcpy(object_counts_last_time_, object_counts_, sizeof(object_counts_));
-  memcpy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_));
+  OS::MemCopy(object_counts_last_time_, object_counts_, sizeof(object_counts_));
+  OS::MemCopy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_));
   ClearObjectStats();
 }
 
 } }  // namespace v8::internal