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

src/objects.h

 // Copyright 2015 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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 6269 matching lines @@
   // In case of duplicates, the latest descriptor is used.
   static void AppendCallbackDescriptors(Handle<Map> map,
                                         Handle<Object> descriptors);
 
   static inline int SlackForArraySize(int old_size, int size_limit);
 
   static void EnsureDescriptorSlack(Handle<Map> map, int slack);
 
   Code* LookupInCodeCache(Name* name, Code::Flags code);
 
+  static Handle<Map> GetObjectCreateMap(Handle<HeapObject> prototype);
+
   // Computes a hash value for this map, to be used in HashTables and such.
   int Hash();
 
   // Returns the transitioned map for this map with the most generic
   // elements_kind that's found in |candidates|, or |nullptr| if no match is
   // found at all.
   Map* FindElementsKindTransitionedMap(MapHandleList* candidates);
 
   inline bool CanTransition();
 
   inline bool IsBooleanMap();
   inline bool IsPrimitiveMap();
   inline bool IsJSReceiverMap();
   inline bool IsJSObjectMap();
   inline bool IsJSArrayMap();
   inline bool IsJSFunctionMap();
   inline bool IsStringMap();
   inline bool IsJSProxyMap();
   inline bool IsModuleMap();
   inline bool IsJSGlobalProxyMap();
   inline bool IsJSGlobalObjectMap();
   inline bool IsJSTypedArrayMap();
   inline bool IsJSDataViewMap();
 
+  inline bool IsSpecialReceiverMap();
+
   inline bool CanOmitMapChecks();
 
   static void AddDependentCode(Handle<Map> map,
                                DependentCode::DependencyGroup group,
                                Handle<Code> code);
 
   bool IsMapInArrayPrototypeChain();
 
   static Handle<WeakCell> WeakCellForMap(Handle<Map> map);
 
@@ skipping 763 matching lines @@
   V(Math, imul, MathImul)                                   \
   V(Math, clz32, MathClz32)                                 \
   V(Math, fround, MathFround)                               \
   V(Math, trunc, MathTrunc)                                 \
   V(Number, isFinite, NumberIsFinite)                       \
   V(Number, isInteger, NumberIsInteger)                     \
   V(Number, isNaN, NumberIsNaN)                             \
   V(Number, isSafeInteger, NumberIsSafeInteger)             \
   V(Number, parseFloat, NumberParseFloat)                   \
   V(Number, parseInt, NumberParseInt)                       \
-  V(Number.prototype, toString, NumberToString)
+  V(Number.prototype, toString, NumberToString)             \
+  V(Object, create, ObjectCreate)
 
 #define ATOMIC_FUNCTIONS_WITH_ID_LIST(V) \
   V(Atomics, load, AtomicsLoad)          \
   V(Atomics, store, AtomicsStore)
 
 enum BuiltinFunctionId {
   kArrayCode,
 #define DECLARE_FUNCTION_ID(ignored1, ignore2, name)    \
   k##name,
   FUNCTIONS_WITH_ID_LIST(DECLARE_FUNCTION_ID)
@@ skipping 4592 matching lines @@
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #include "src/objects/object-macros-undef.h"
 
 #endif  // V8_OBJECTS_H_