[heap] Optimize migration of objects round two

src/heap/heap-inl.h

Index: src/heap/heap-inl.h
diff --git a/src/heap/heap-inl.h b/src/heap/heap-inl.h
index 48ec1f17407cd7b8121f295288cd925f69d35de9..7b2f5ead9b9a3ff53617f12212ebdfe253f99eac 100644
--- a/src/heap/heap-inl.h
+++ b/src/heap/heap-inl.h
@@ -438,31 +438,11 @@ bool Heap::AllowedToBeMigrated(HeapObject* obj, AllocationSpace dst) {
   return false;
 }
 
-
 void Heap::CopyBlock(Address dst, Address src, int byte_size) {
   CopyWords(reinterpret_cast<Object**>(dst), reinterpret_cast<Object**>(src),
             static_cast<size_t>(byte_size / kPointerSize));
 }
 
-
-void Heap::MoveBlock(Address dst, Address src, int byte_size) {
-  DCHECK(IsAligned(byte_size, kPointerSize));
-
-  int size_in_words = byte_size / kPointerSize;
-
-  if ((dst < src) || (dst >= (src + byte_size))) {
-    Object** src_slot = reinterpret_cast<Object**>(src);
-    Object** dst_slot = reinterpret_cast<Object**>(dst);
-    Object** end_slot = src_slot + size_in_words;
-
-    while (src_slot != end_slot) {
-      *dst_slot++ = *src_slot++;
-    }
-  } else {
-    MemMove(dst, src, static_cast<size_t>(byte_size));
-  }
-}
-
 template <Heap::FindMementoMode mode>
 AllocationMemento* Heap::FindAllocationMemento(HeapObject* object) {
   // Check if there is potentially a memento behind the object. If