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

src/bootstrapper.cc

 // Copyright 2014 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/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/api-natives.h"
 #include "src/base/utils/random-number-generator.h"
 #include "src/code-stubs.h"
@@ skipping 217 matching lines @@
   HARMONY_INPROGRESS(DECLARE_FEATURE_INITIALIZATION)
   HARMONY_STAGED(DECLARE_FEATURE_INITIALIZATION)
   HARMONY_SHIPPING(DECLARE_FEATURE_INITIALIZATION)
 #undef DECLARE_FEATURE_INITIALIZATION
 
   Handle<JSFunction> InstallInternalArray(Handle<JSObject> target,
                                           const char* name,
                                           ElementsKind elements_kind);
   bool InstallNatives(ContextType context_type);
 
-  void InstallTypedArray(
-      const char* name,
-      ElementsKind elements_kind,
-      Handle<JSFunction>* fun,
-      Handle<Map>* external_map);
+  void InstallTypedArray(const char* name, ElementsKind elements_kind,
+                         Handle<JSFunction>* fun);
   bool InstallExperimentalNatives();
   bool InstallExtraNatives();
   void InstallBuiltinFunctionIds();
   void InstallExperimentalBuiltinFunctionIds();
   void InstallJSFunctionResultCaches();
   void InitializeNormalizedMapCaches();
 
   enum ExtensionTraversalState {
     UNVISITED, VISITED, INSTALLED
   };
@@ skipping 1024 matching lines @@
     Handle<JSFunction> array_buffer_fun =
         InstallFunction(
             global, "ArrayBuffer", JS_ARRAY_BUFFER_TYPE,
             JSArrayBuffer::kSizeWithInternalFields,
             isolate->initial_object_prototype(),
             Builtins::kIllegal);
     native_context()->set_array_buffer_fun(*array_buffer_fun);
   }
 
   {  // -- T y p e d A r r a y s
-#define INSTALL_TYPED_ARRAY(Type, type, TYPE, ctype, size)                    \
-    {                                                                         \
-      Handle<JSFunction> fun;                                                 \
-      Handle<Map> external_map;                                               \
-      InstallTypedArray(#Type "Array",                                        \
-          TYPE##_ELEMENTS,                                                    \
-          &fun,                                                               \
-          &external_map);                                                     \
-      native_context()->set_##type##_array_fun(*fun);                         \
-      native_context()->set_##type##_array_external_map(*external_map);       \
-    }
+#define INSTALL_TYPED_ARRAY(Type, type, TYPE, ctype, size)   \
+  {                                                          \
+    Handle<JSFunction> fun;                                  \
+    InstallTypedArray(#Type "Array", TYPE##_ELEMENTS, &fun); \
+    native_context()->set_##type##_array_fun(*fun);          \
+  }
     TYPED_ARRAYS(INSTALL_TYPED_ARRAY)
 #undef INSTALL_TYPED_ARRAY
 
     Handle<JSFunction> data_view_fun =
         InstallFunction(
             global, "DataView", JS_DATA_VIEW_TYPE,
             JSDataView::kSizeWithInternalFields,
             isolate->initial_object_prototype(),
             Builtins::kIllegal);
     native_context()->set_data_view_fun(*data_view_fun);
@@ skipping 190 matching lines @@
         Handle<Code>(isolate->builtins()->builtin(
             Builtins::kHandleApiCallAsConstructor));
     Handle<JSFunction> delegate = factory->NewFunction(
         factory->empty_string(), code, JS_OBJECT_TYPE, JSObject::kHeaderSize);
     native_context()->set_call_as_constructor_delegate(*delegate);
     delegate->shared()->DontAdaptArguments();
   }
 }
 
 
-void Genesis::InstallTypedArray(
-    const char* name,
-    ElementsKind elements_kind,
-    Handle<JSFunction>* fun,
-    Handle<Map>* external_map) {
+void Genesis::InstallTypedArray(const char* name, ElementsKind elements_kind,
+                                Handle<JSFunction>* fun) {
   Handle<JSObject> global = Handle<JSObject>(native_context()->global_object());
   Handle<JSFunction> result = InstallFunction(
       global, name, JS_TYPED_ARRAY_TYPE, JSTypedArray::kSize,
       isolate()->initial_object_prototype(), Builtins::kIllegal);
 
   Handle<Map> initial_map = isolate()->factory()->NewMap(
       JS_TYPED_ARRAY_TYPE,
       JSTypedArray::kSizeWithInternalFields,
       elements_kind);
   JSFunction::SetInitialMap(result, initial_map,
                             handle(initial_map->prototype(), isolate()));
   *fun = result;
-
-  ElementsKind external_kind = GetNextTransitionElementsKind(elements_kind);
-  *external_map = Map::AsElementsKind(initial_map, external_kind);
 }
 
 
 void Genesis::InitializeExperimentalGlobal() {
 #define FEATURE_INITIALIZE_GLOBAL(id, descr) InitializeGlobal_##id();
 
   HARMONY_INPROGRESS(FEATURE_INITIALIZE_GLOBAL)
   HARMONY_STAGED(FEATURE_INITIALIZE_GLOBAL)
   HARMONY_SHIPPING(FEATURE_INITIALIZE_GLOBAL)
 #undef FEATURE_INITIALIZE_GLOBAL
@@ skipping 1781 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8