[turbofan] Add support for special JSArrayBufferView accessors.

src/compiler/access-builder.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/compiler/access-builder.h"
 
 #include "src/contexts.h"
 #include "src/frames.h"
 #include "src/heap/heap.h"
 #include "src/type-cache.h"
@@ skipping 64 matching lines @@
 
 // static
 FieldAccess AccessBuilder::ForJSArrayBufferBackingStore() {
   FieldAccess access = {kTaggedBase, JSArrayBuffer::kBackingStoreOffset,
                         MaybeHandle<Name>(), Type::UntaggedPointer(), kMachPtr};
   return access;
 }
 
 
 // static
+FieldAccess AccessBuilder::ForJSArrayBufferBitField() {
+  FieldAccess access = {kTaggedBase, JSArrayBuffer::kBitFieldOffset,
+                        MaybeHandle<Name>(), TypeCache::Get().kInt8, kMachInt8};
+  return access;
+}
+
+
+// static
+FieldAccess AccessBuilder::ForJSArrayBufferViewBuffer() {
+  FieldAccess access = {kTaggedBase, JSArrayBufferView::kBufferOffset,
+                        MaybeHandle<Name>(), Type::TaggedPointer(),
+                        kMachAnyTagged};
+  return access;
+}
+
+
+// static
 FieldAccess AccessBuilder::ForJSDateField(JSDate::FieldIndex index) {
   FieldAccess access = {kTaggedBase,
                         JSDate::kValueOffset + index * kPointerSize,
                         MaybeHandle<Name>(), Type::Number(), kMachAnyTagged};
   return access;
 }
 
 
 // static
 FieldAccess AccessBuilder::ForFixedArrayLength() {
@@ skipping 228 matching lines @@
 // static
 FieldAccess AccessBuilder::ForFrameMarker() {
   FieldAccess access = {kUntaggedBase, StandardFrameConstants::kMarkerOffset,
                         MaybeHandle<Name>(), Type::Tagged(), kMachAnyTagged};
   return access;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8