Always store stubs on the JSObject receiver, even when in slow mode.

src/ic.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 116 matching lines @@
   }
 
   bool SlowIsUndeclaredGlobal() {
     return ComputeMode() == RelocInfo::CODE_TARGET_CONTEXT;
   }
 
   // Determines which map must be used for keeping the code stub.
   // These methods should not be called with undefined or null.
   static inline InlineCacheHolderFlag GetCodeCacheForObject(Object* object,
                                                             JSObject* holder);
-  static inline InlineCacheHolderFlag GetCodeCacheForObject(JSObject* object,
-                                                            JSObject* holder);
   static inline JSObject* GetCodeCacheHolder(Isolate* isolate,
                                              Object* object,
                                              InlineCacheHolderFlag holder);
 
   static bool IsCleared(Code* code) {
     InlineCacheState state = code->ic_state();
     return state == UNINITIALIZED || state == PREMONOMORPHIC;
   }
 
  protected:
@@ skipping 422 matching lines @@
 
   // Update the inline cache and the global stub cache based on the
   // lookup result.
   void UpdateCaches(LookupResult* lookup,
                     Handle<JSObject> receiver,
                     Handle<String> name,
                     Handle<Object> value);
   // Compute the code stub for this store; used for rewriting to
   // monomorphic state and making sure that the code stub is in the
   // stub cache.
-  virtual Handle<Code> ComputeStoreMonomorphic(LookupResult* lookup,
-                                               Handle<JSObject> receiver,
-                                               Handle<String> name,
-                                               Handle<Object> value);
+  virtual Handle<Code> ComputeStoreHandler(LookupResult* lookup,
+                                           Handle<JSObject> receiver,
+                                           Handle<String> name,
+                                           Handle<Object> value);
 
  private:
   void set_target(Code* code) {
     // Strict mode must be preserved across IC patching.
     ASSERT(Code::GetStrictMode(code->extra_ic_state()) ==
            Code::GetStrictMode(target()->extra_ic_state()));
     IC::set_target(code);
   }
 
   static Handle<Code> initialize_stub(Isolate* isolate,
@@ skipping 47 matching lines @@
   static void GenerateMiss(MacroAssembler* masm, ICMissMode force_generic);
   static void GenerateSlow(MacroAssembler* masm);
   static void GenerateRuntimeSetProperty(MacroAssembler* masm,
                                          StrictModeFlag strict_mode);
   static void GenerateGeneric(MacroAssembler* masm, StrictModeFlag strict_mode);
   static void GenerateNonStrictArguments(MacroAssembler* masm);
 
  protected:
   virtual Code::Kind kind() const { return Code::KEYED_STORE_IC; }
 
-  virtual Handle<Code> ComputeStoreMonomorphic(LookupResult* lookup,
-                                               Handle<JSObject> receiver,
-                                               Handle<String> name,
-                                               Handle<Object> value);
+  virtual Handle<Code> ComputeStoreHandler(LookupResult* lookup,
+                                           Handle<JSObject> receiver,
+                                           Handle<String> name,
+                                           Handle<Object> value);
   virtual void UpdateMegamorphicCache(Map* map, Name* name, Code* code) { }
 
   virtual Handle<Code> pre_monomorphic_stub() {
     return pre_monomorphic_stub(isolate(), strict_mode());
   }
   static Handle<Code> pre_monomorphic_stub(Isolate* isolate,
                                            StrictModeFlag strict_mode) {
     if (strict_mode == kStrictMode) {
       return isolate->builtins()->KeyedStoreIC_PreMonomorphic_Strict();
     } else {
@@ skipping 188 matching lines @@
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, UnaryOpIC_Miss);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, StoreIC_MissFromStubFailure);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, ElementsTransitionAndStoreIC_Miss);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, CompareNilIC_Miss);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, ToBooleanIC_Miss);
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IC_H_