[proxies] fix access issue when having proxies on the prototype-chain of global objects.

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 156 matching lines @@
 // static
 FieldAccess AccessBuilder::ForDescriptorArrayEnumCacheBridgeCache() {
   FieldAccess access = {
       kTaggedBase, DescriptorArray::kEnumCacheBridgeCacheOffset, Handle<Name>(),
       Type::TaggedPointer(), MachineType::AnyTagged()};
   return access;
 }
 
 
 // static
+FieldAccess AccessBuilder::ForMapBitField() {
+  FieldAccess access = {kTaggedBase, Map::kBitFieldOffset, Handle<Name>(),
+                        TypeCache::Get().kUint8, MachineType::Uint8()};
+  return access;
+}
+
+
+// static
 FieldAccess AccessBuilder::ForMapBitField3() {
   FieldAccess access = {kTaggedBase, Map::kBitField3Offset, Handle<Name>(),
                         TypeCache::Get().kInt32, MachineType::Int32()};
   return access;
 }
 
 
 // static
 FieldAccess AccessBuilder::ForMapDescriptors() {
   FieldAccess access = {kTaggedBase, Map::kDescriptorsOffset, Handle<Name>(),
@@ skipping 188 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