Fast copy between TypedData and ExternalTypedData

runtime/vm/object.cc

Index: runtime/vm/object.cc
diff --git a/runtime/vm/object.cc b/runtime/vm/object.cc
index 8b7c8168e1ce11deba9e646a8852b5b9d980d43a..87ad90528b73ca9359935837eb5be7e8dfd6211a 100644
--- a/runtime/vm/object.cc
+++ b/runtime/vm/object.cc
@@ -12605,28 +12605,6 @@ const intptr_t TypedData::element_size[] = {
 };
 
 
-void TypedData::Copy(const TypedData& dst,
-                     intptr_t dst_offset_in_bytes,
-                     const TypedData& src,
-                     intptr_t src_offset_in_bytes,
-                     intptr_t length_in_bytes) {
-  ASSERT(Utils::RangeCheck(src_offset_in_bytes,
-                           length_in_bytes,
-                           src.LengthInBytes()));
-  ASSERT(Utils::RangeCheck(dst_offset_in_bytes,
-                           length_in_bytes,
-                           dst.LengthInBytes()));
-  {
-    NoGCScope no_gc;
-    if (length_in_bytes > 0) {
-      memmove(dst.DataAddr(dst_offset_in_bytes),
-              src.DataAddr(src_offset_in_bytes),
-              length_in_bytes);
-    }
-  }
-}
-
-
 RawTypedData* TypedData::New(intptr_t class_id,
                              intptr_t len,
                              Heap::Space space) {
@@ -12664,28 +12642,6 @@ FinalizablePersistentHandle* ExternalTypedData::AddFinalizer(
 }
 
 
-void ExternalTypedData::Copy(const ExternalTypedData& dst,
-                             intptr_t dst_offset_in_bytes,
-                             const ExternalTypedData& src,
-                             intptr_t src_offset_in_bytes,
-                             intptr_t length_in_bytes) {
-  ASSERT(Utils::RangeCheck(src_offset_in_bytes,
-                           length_in_bytes,
-                           src.LengthInBytes()));
-  ASSERT(Utils::RangeCheck(dst_offset_in_bytes,
-                           length_in_bytes,
-                           dst.LengthInBytes()));
-  {
-    NoGCScope no_gc;
-    if (length_in_bytes > 0) {
-      memmove(dst.DataAddr(dst_offset_in_bytes),
-              src.DataAddr(src_offset_in_bytes),
-              length_in_bytes);
-    }
-  }
-}
-
-
 RawExternalTypedData* ExternalTypedData::New(intptr_t class_id,
                                              uint8_t* data,
                                              intptr_t len,