[WIP] JSForInLowering and JSForInHasOwnProperty.

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/compiler/type-cache.h"
 #include "src/contexts.h"
 #include "src/frames.h"
 #include "src/handles-inl.h"
@@ skipping 404 matching lines @@
 // static
 FieldAccess AccessBuilder::ForDescriptorArrayEnumCacheBridgeCache() {
   FieldAccess access = {
       kTaggedBase,           DescriptorArray::kEnumCacheBridgeCacheOffset,
       Handle<Name>(),        MaybeHandle<Map>(),
       Type::OtherInternal(), MachineType::TaggedPointer(),
       kPointerWriteBarrier};
   return access;
 }
 
+// static
+FieldAccess AccessBuilder::ForDescriptorArrayEnumCacheBridgeIndicesCache() {
+  // TODO(bmeurer): Weird hack!
+  FieldAccess access = {
+      kTaggedBase,      DescriptorArray::kEnumCacheBridgeIndicesCacheOffset,
+      Handle<Name>(),   MaybeHandle<Map>(),
+      Type::Any(),      MachineType::AnyTagged(),
+      kFullWriteBarrier};
+  return access;
+}
 
 // static
 FieldAccess AccessBuilder::ForMapBitField() {
   FieldAccess access = {
       kTaggedBase,        Map::kBitFieldOffset,    Handle<Name>(),
       MaybeHandle<Map>(), TypeCache::Get().kUint8, MachineType::Uint8(),
       kNoWriteBarrier};
   return access;
 }
 
@@ skipping 503 matching lines @@
       MaybeHandle<Map>(),
       Type::SignedSmall(),
       MachineType::TaggedSigned(),
       kNoWriteBarrier};
   return access;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8