Correct handling of arrays with callbacks in the prototype chain.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5319 matching lines @@
   int CodeSize() { return SizeFor(body_size()); }
   inline void CodeIterateBody(ObjectVisitor* v);
 
   template<typename StaticVisitor>
   inline void CodeIterateBody(Heap* heap);
 
   DECLARE_PRINTER(Code)
   DECLARE_VERIFIER(Code)
 
   void ClearInlineCaches();
+  void ClearInlineCaches(Kind kind);
+
   void ClearTypeFeedbackCells(Heap* heap);
 
   BailoutId TranslatePcOffsetToAstId(uint32_t pc_offset);
 
 #define DECLARE_CODE_AGE_ENUM(X) k##X##CodeAge,
   enum Age {
     kNotExecutedCodeAge = -2,
     kExecutedOnceCodeAge = -1,
     kNoAgeCodeAge = 0,
     CODE_AGE_LIST(DECLARE_CODE_AGE_ENUM)
@@ skipping 148 matching lines @@
                 ExtendedExtraICStateField::kShift +
                 ExtendedExtraICStateField::kSize);
 
   // This constant should be encodable in an ARM instruction.
   static const int kFlagsNotUsedInLookup =
       TypeField::kMask | CacheHolderField::kMask;
 
  private:
   friend class RelocIterator;
 
+  void ClearInlineCaches(Kind* kind);
+
   // Code aging
   byte* FindCodeAgeSequence();
   static void GetCodeAgeAndParity(Code* code, Age* age,
                                   MarkingParity* parity);
   static void GetCodeAgeAndParity(byte* sequence, Age* age,
                                   MarkingParity* parity);
   static Code* GetCodeAgeStub(Isolate* isolate, Age age, MarkingParity parity);
 
   // Code aging -- platform-specific
   static void PatchPlatformCodeAge(Isolate* isolate,
@@ skipping 271 matching lines @@
   }
 
   inline bool has_slow_elements_kind() {
     return elements_kind() == DICTIONARY_ELEMENTS
         || elements_kind() == NON_STRICT_ARGUMENTS_ELEMENTS;
   }
 
   static bool IsValidElementsTransition(ElementsKind from_kind,
                                         ElementsKind to_kind);
 
+  // Returns true if the current map doesn't have DICTIONARY_ELEMENTS but if a
+  // map with DICTIONARY_ELEMENTS was found in the prototype chain.
+  bool DictionaryElementsInPrototypeChainOnly();
+
   inline bool HasTransitionArray();
   inline bool HasElementsTransition();
   inline Map* elements_transition_map();
   MUST_USE_RESULT inline MaybeObject* set_elements_transition_map(
       Map* transitioned_map);
   inline void SetTransition(int transition_index, Map* target);
   inline Map* GetTransition(int transition_index);
 
   static Handle<TransitionArray> AddTransition(Handle<Map> map,
                                                Handle<Name> key,
@@ skipping 4663 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_