Also support smi in load-ICs.

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 175 matching lines @@
                               Handle<String> name,
                               Handle<Object> value = Handle<Code>::null());
   virtual Handle<Code> CompileHandler(LookupResult* lookup,
                                       Handle<Object> object,
                                       Handle<String> name,
                                       Handle<Object> value,
                                       InlineCacheHolderFlag cache_holder) {
     UNREACHABLE();
     return Handle<Code>::null();
   }
-  void UpdateMonomorphicIC(Handle<HeapObject> receiver,
+  void UpdateMonomorphicIC(Handle<Object> receiver,
                            Handle<Code> handler,
                            Handle<String> name);
 
-  bool UpdatePolymorphicIC(Handle<HeapObject> receiver,
+  bool UpdatePolymorphicIC(Handle<Object> receiver,
                            Handle<String> name,
                            Handle<Code> code);
 
   void CopyICToMegamorphicCache(Handle<String> name);
   bool IsTransitionedMapOfMonomorphicTarget(Map* receiver_map);
   void PatchCache(Handle<Object> object,
                   Handle<String> name,
                   Handle<Code> code);
   virtual void UpdateMegamorphicCache(Map* map, Name* name, Code* code);
   virtual Code::Kind kind() const {
@@ skipping 682 matching lines @@
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, StoreIC_MissFromStubFailure);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, ElementsTransitionAndStoreIC_Miss);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, BinaryOpIC_Miss);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, CompareNilIC_Miss);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, ToBooleanIC_Miss);
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IC_H_