Always use the StoreFieldStub to do the actual storing.

src/stub-cache.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.
 
 #ifndef V8_STUB_CACHE_H_
 #define V8_STUB_CACHE_H_
 
 #include "src/allocation.h"
 #include "src/arguments.h"
 #include "src/code-stubs.h"
@@ skipping 571 matching lines @@
   virtual void FrontendFooter(Handle<Name> name, Label* miss);
   void GenerateRestoreName(Label* label, Handle<Name> name);
 
  private:
   void GenerateStoreTransition(Handle<Map> transition, Handle<Name> name,
                                Register receiver_reg, Register name_reg,
                                Register value_reg, Register scratch1,
                                Register scratch2, Register scratch3,
                                Label* miss_label, Label* slow);
 
-  void GenerateStoreField(Handle<JSObject> object, LookupResult* lookup,
-                          Register receiver_reg, Register name_reg,
-                          Register value_reg, Register scratch1,
-                          Register scratch2, Label* miss_label);
+  void GenerateStoreField(LookupResult* lookup, Register value_reg,
+                          Label* miss_label);
 
   static Builtins::Name SlowBuiltin(Code::Kind kind) {
     switch (kind) {
       case Code::STORE_IC: return Builtins::kStoreIC_Slow;
       case Code::KEYED_STORE_IC: return Builtins::kKeyedStoreIC_Slow;
       default: UNREACHABLE();
     }
     return Builtins::kStoreIC_Slow;
   }
 
@@ skipping 71 matching lines @@
   Handle<JSFunction> constant_function_;
   bool is_simple_api_call_;
   Handle<FunctionTemplateInfo> expected_receiver_type_;
   Handle<CallHandlerInfo> api_call_info_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_STUB_CACHE_H_