Revert of [builtins] Properly optimize TypedArray/DataView accessors.

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index a6c8964f467cbc1ab14748672c3d30b5aa496dc0..c596a9ca67d78858b52bf4ed98d27b058cd571ba 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -3064,119 +3064,6 @@
   return *result;
 }
 
-// ES6 section 24.2.4.1 get DataView.prototype.buffer
-BUILTIN(DataViewPrototypeGetBuffer) {
-  HandleScope scope(isolate);
-  CHECK_RECEIVER(JSDataView, data_view, "get DataView.prototype.buffer");
-  return data_view->buffer();
-}
-
-// ES6 section 24.2.4.2 get DataView.prototype.byteLength
-BUILTIN(DataViewPrototypeGetByteLength) {
-  HandleScope scope(isolate);
-  CHECK_RECEIVER(JSDataView, data_view, "get DataView.prototype.byteLength");
-  // TODO(bmeurer): According to the ES6 spec, we should throw a TypeError
-  // here if the JSArrayBuffer of the {data_view} was neutered.
-  return data_view->byte_length();
-}
-
-// ES6 section 24.2.4.3 get DataView.prototype.byteOffset
-BUILTIN(DataViewPrototypeGetByteOffset) {
-  HandleScope scope(isolate);
-  CHECK_RECEIVER(JSDataView, data_view, "get DataView.prototype.byteOffset");
-  // TODO(bmeurer): According to the ES6 spec, we should throw a TypeError
-  // here if the JSArrayBuffer of the {data_view} was neutered.
-  return data_view->byte_offset();
-}
-
-// -----------------------------------------------------------------------------
-// ES6 section 22.2 TypedArray Objects
-
-// ES6 section 22.2.3.1 get %TypedArray%.prototype.buffer
-BUILTIN(TypedArrayPrototypeBuffer) {
-  HandleScope scope(isolate);
-  CHECK_RECEIVER(JSTypedArray, typed_array, "get TypedArray.prototype.buffer");
-  return *typed_array->GetBuffer();
-}
-
-namespace {
-
-void Generate_TypedArrayProtoypeGetter(CodeStubAssembler* assembler,
-                                       const char* method_name,
-                                       int object_offset) {
-  typedef CodeStubAssembler::Label Label;
-  typedef compiler::Node Node;
-
-  Node* receiver = assembler->Parameter(0);
-  Node* context = assembler->Parameter(3);
-
-  // Check if the {receiver} is actually a JSTypedArray.
-  Label if_receiverisincompatible(assembler, Label::kDeferred);
-  assembler->GotoIf(assembler->WordIsSmi(receiver), &if_receiverisincompatible);
-  Node* receiver_instance_type = assembler->LoadInstanceType(receiver);
-  assembler->GotoUnless(
-      assembler->Word32Equal(receiver_instance_type,
-                             assembler->Int32Constant(JS_TYPED_ARRAY_TYPE)),
-      &if_receiverisincompatible);
-
-  // Check if the {receiver}'s JSArrayBuffer was neutered.
-  Node* receiver_buffer =
-      assembler->LoadObjectField(receiver, JSTypedArray::kBufferOffset);
-  Node* receiver_buffer_bit_field = assembler->LoadObjectField(
-      receiver_buffer, JSArrayBuffer::kBitFieldOffset, MachineType::Int8());
-  Label if_receiverisneutered(assembler, Label::kDeferred);
-  assembler->GotoUnless(
-      assembler->Word32Equal(
-          assembler->Word32And(
-              receiver_buffer_bit_field,
-              assembler->Int32Constant(JSArrayBuffer::WasNeutered::kMask)),
-          assembler->Int32Constant(0)),
-      &if_receiverisneutered);
-  assembler->Return(assembler->LoadObjectField(receiver, object_offset));
-
-  assembler->Bind(&if_receiverisneutered);
-  {
-    // The {receiver}s buffer was neutered, default to zero.
-    assembler->Return(assembler->SmiConstant(0));
-  }
-
-  assembler->Bind(&if_receiverisincompatible);
-  {
-    // The {receiver} is not a valid JSGeneratorObject.
-    Node* result = assembler->CallRuntime(
-        Runtime::kThrowIncompatibleMethodReceiver, context,
-        assembler->HeapConstant(assembler->factory()->NewStringFromAsciiChecked(
-            method_name, TENURED)),
-        receiver);
-    assembler->Return(result);  // Never reached.
-  }
-}
-
-}  // namespace
-
-// ES6 section 22.2.3.2 get %TypedArray%.prototype.byteLength
-void Builtins::Generate_TypedArrayPrototypeByteLength(
-    CodeStubAssembler* assembler) {
-  Generate_TypedArrayProtoypeGetter(assembler,
-                                    "get TypedArray.prototype.byteLength",
-                                    JSTypedArray::kByteLengthOffset);
-}
-
-// ES6 section 22.2.3.3 get %TypedArray%.prototype.byteOffset
-void Builtins::Generate_TypedArrayPrototypeByteOffset(
-    CodeStubAssembler* assembler) {
-  Generate_TypedArrayProtoypeGetter(assembler,
-                                    "get TypedArray.prototype.byteOffset",
-                                    JSTypedArray::kByteOffsetOffset);
-}
-
-// ES6 section 22.2.3.18 get %TypedArray%.prototype.length
-void Builtins::Generate_TypedArrayPrototypeLength(
-    CodeStubAssembler* assembler) {
-  Generate_TypedArrayProtoypeGetter(assembler,
-                                    "get TypedArray.prototype.length",
-                                    JSTypedArray::kLengthOffset);
-}
 
 // -----------------------------------------------------------------------------
 // ES6 section 20.3 Date Objects