[runtime] Introduce FastNewStrictArgumentsStub to optimize strict arguments.

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/handles-inl.h"
 #include "src/heap/heap.h"
@@ skipping 250 matching lines @@
 // static
 FieldAccess AccessBuilder::ForValue() {
   FieldAccess access = {kTaggedBase, JSValue::kValueOffset, Handle<Name>(),
                         Type::Any(), MachineType::AnyTagged()};
   return access;
 }
 
 
 // static
 FieldAccess AccessBuilder::ForArgumentsLength() {
-  int offset =
-      JSObject::kHeaderSize + Heap::kArgumentsLengthIndex * kPointerSize;
-  FieldAccess access = {kTaggedBase, offset, Handle<Name>(), Type::Any(),
-                        MachineType::AnyTagged()};
+  FieldAccess access = {kTaggedBase, JSArgumentsObject::kLengthOffset,
+                        Handle<Name>(), Type::Any(), MachineType::AnyTagged()};
   return access;
 }
 
 
 // static
 FieldAccess AccessBuilder::ForArgumentsCallee() {
-  int offset =
-      JSObject::kHeaderSize + Heap::kArgumentsCalleeIndex * kPointerSize;
-  FieldAccess access = {kTaggedBase, offset, Handle<Name>(), Type::Any(),
-                        MachineType::AnyTagged()};
+  FieldAccess access = {kTaggedBase, JSSloppyArgumentsObject::kCalleeOffset,
+                        Handle<Name>(), Type::Any(), MachineType::AnyTagged()};
   return access;
 }
 
 
 // static
 FieldAccess AccessBuilder::ForFixedArraySlot(size_t index) {
   int offset = FixedArray::OffsetOfElementAt(static_cast<int>(index));
   FieldAccess access = {kTaggedBase, offset, Handle<Name>(), Type::Any(),
                         MachineType::AnyTagged()};
   return access;
@@ skipping 106 matching lines @@
 // static
 FieldAccess AccessBuilder::ForStatsCounter() {
   FieldAccess access = {kUntaggedBase, 0, MaybeHandle<Name>(),
                         TypeCache::Get().kInt32, MachineType::Int32()};
   return access;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8