[compiler] Support Object.create(null) inlining in TF

src/objects-inl.h

 // 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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 2201 matching lines @@
     default:
       if (type >= FIRST_ARRAY_ITERATOR_TYPE &&
           type <= LAST_ARRAY_ITERATOR_TYPE) {
         return JSArrayIterator::kSize;
       }
       UNREACHABLE();
       return 0;
   }
 }
 
+inline bool IsSpecialReceiverInstanceType(InstanceType instance_type) {
+  return instance_type <= LAST_SPECIAL_RECEIVER_TYPE;
+}
 
 int JSObject::GetInternalFieldCount(Map* map) {
   int instance_size = map->instance_size();
   if (instance_size == kVariableSizeSentinel) return 0;
   InstanceType instance_type = map->instance_type();
   return ((instance_size - GetHeaderSize(instance_type)) >> kPointerSizeLog2) -
          map->GetInObjectProperties();
 }
 
 
@@ skipping 2707 matching lines @@
 bool Map::IsJSProxyMap() { return instance_type() == JS_PROXY_TYPE; }
 bool Map::IsJSGlobalProxyMap() {
   return instance_type() == JS_GLOBAL_PROXY_TYPE;
 }
 bool Map::IsJSGlobalObjectMap() {
   return instance_type() == JS_GLOBAL_OBJECT_TYPE;
 }
 bool Map::IsJSTypedArrayMap() { return instance_type() == JS_TYPED_ARRAY_TYPE; }
 bool Map::IsJSDataViewMap() { return instance_type() == JS_DATA_VIEW_TYPE; }
 
+bool Map::IsSpecialReceiverMap() {
+  bool result = IsSpecialReceiverInstanceType(instance_type());
+  DCHECK_IMPLIES(!result,
+                 !has_named_interceptor() && !is_access_check_needed());
+  return result;
+}
 
 bool Map::CanOmitMapChecks() {
   return is_stable() && FLAG_omit_map_checks_for_leaf_maps;
 }
 
 
 DependentCode* DependentCode::next_link() {
   return DependentCode::cast(get(kNextLinkIndex));
 }
 
@@ skipping 3479 matching lines @@
 #undef WRITE_INT64_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_OBJECTS_INL_H_