Store mode for keyed stores should be passed in from type feedback

src/hydrogen.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 1207 matching lines @@
                                    ElementsKind kind,
                                    HValue* length);
 
   void BuildTransitionElementsKind(HValue* object,
                                    HValue* map,
                                    ElementsKind from_kind,
                                    ElementsKind to_kind,
                                    bool is_jsarray);
 
   HInstruction* BuildUncheckedMonomorphicElementAccess(
-      HValue* object,
+      HValue* checked_object,
       HValue* key,
       HValue* val,
-      HCheckMaps* mapcheck,
       bool is_js_array,
       ElementsKind elements_kind,
       bool is_store,
       LoadKeyedHoleMode load_mode,
       KeyedAccessStoreMode store_mode);
 
   HInstruction* AddExternalArrayElementAccess(
       HValue* external_elements,
       HValue* checked_key,
       HValue* val,
@@ skipping 733 matching lines @@
   HInstruction* BuildIncrement(bool returns_original_input,
                                CountOperation* expr);
   HInstruction* BuildLoadKeyedGeneric(HValue* object,
                                       HValue* key);
 
   HInstruction* TryBuildConsolidatedElementLoad(HValue* object,
                                                 HValue* key,
                                                 HValue* val,
                                                 SmallMapList* maps);
 
+  LoadKeyedHoleMode BuildKeyedHoleMode(Handle<Map> map);
+
   HInstruction* BuildMonomorphicElementAccess(HValue* object,
                                               HValue* key,
                                               HValue* val,
                                               HValue* dependency,
                                               Handle<Map> map,
                                               bool is_store,
                                               KeyedAccessStoreMode store_mode);
 
   HValue* HandlePolymorphicElementAccess(HValue* object,
                                          HValue* key,
@@ skipping 312 matching lines @@
   }
 
  private:
   HGraphBuilder* builder_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_