Reland of "Remove ExternalArray, derived types, and element kinds"

src/code-stubs.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/code-stubs.h"
 
 #include <sstream>
 
 #include "src/bootstrapper.h"
 #include "src/cpu-profiler.h"
@@ skipping 789 matching lines @@
 
 void StoreElementStub::Generate(MacroAssembler* masm) {
   switch (elements_kind()) {
     case FAST_ELEMENTS:
     case FAST_HOLEY_ELEMENTS:
     case FAST_SMI_ELEMENTS:
     case FAST_HOLEY_SMI_ELEMENTS:
     case FAST_DOUBLE_ELEMENTS:
     case FAST_HOLEY_DOUBLE_ELEMENTS:
 #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \
-    case EXTERNAL_##TYPE##_ELEMENTS:                    \
     case TYPE##_ELEMENTS:
 
     TYPED_ARRAYS(TYPED_ARRAY_CASE)
 #undef TYPED_ARRAY_CASE
       UNREACHABLE();
       break;
     case DICTIONARY_ELEMENTS:
       ElementHandlerCompiler::GenerateStoreSlow(masm);
       break;
     case FAST_SLOPPY_ARGUMENTS_ELEMENTS:
@@ skipping 251 matching lines @@
 
   if (type->Is(Type::UntaggedPointer())) {
     return Representation::External();
   }
 
   DCHECK(!type->Is(Type::Untagged()));
   return Representation::Tagged();
 }
 }  // namespace internal
 }  // namespace v8