Recover performance of array buffer view field accesses in ICs

src/code-stubs-hydrogen.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/v8.h"
 
 #include "src/bailout-reason.h"
 #include "src/code-stubs.h"
 #include "src/field-index.h"
 #include "src/hydrogen.h"
@@ skipping 607 matching lines @@
   return BuildLoadNamedField(GetParameter(0), casted_stub()->index());
 }
 
 
 Handle<Code> LoadFieldStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 
 template <>
+HValue* CodeStubGraphBuilder<ArrayBufferViewLoadFieldStub>::BuildCodeStub() {
+  return BuildLoadNamedField(GetParameter(0), casted_stub()->index());
+}
+
+
+Handle<Code> ArrayBufferViewLoadFieldStub::GenerateCode() {
+  return DoGenerateCode(this);
+}
+
+
+template <>
 HValue* CodeStubGraphBuilder<LoadConstantStub>::BuildCodeStub() {
   HValue* map = AddLoadMap(GetParameter(0), NULL);
   HObjectAccess descriptors_access = HObjectAccess::ForObservableJSObjectOffset(
       Map::kDescriptorsOffset, Representation::Tagged());
   HValue* descriptors = Add<HLoadNamedField>(map, nullptr, descriptors_access);
   HObjectAccess value_access = HObjectAccess::ForObservableJSObjectOffset(
       DescriptorArray::GetValueOffset(casted_stub()->constant_index()));
   return Add<HLoadNamedField>(descriptors, nullptr, value_access);
 }
 
@@ skipping 1395 matching lines @@
   // need.
   info()->MarkMustNotHaveEagerFrame();
 
   // Probe the stub cache.
   Add<HTailCallThroughMegamorphicCache>(receiver, name);
 
   // We never continue.
   return graph()->GetConstant0();
 }
 } }  // namespace v8::internal