Also support smi in load-ICs.

src/stub-cache.cc

 // 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 117 matching lines @@
       Code::HANDLER, extra_ic_state, cache_holder, Code::NORMAL, kind);
 
   Handle<Object> probe(stub_holder->map()->FindInCodeCache(*name, flags),
                        isolate_);
   if (probe->IsCode()) return Handle<Code>::cast(probe);
   return Handle<Code>::null();
 }
 
 
 Handle<Code> StubCache::ComputeMonomorphicIC(Handle<Name> name,
-                                             Handle<HeapObject> object,
+                                             Handle<Object> object,
                                              Handle<Code> handler,
                                              StrictModeFlag strict_mode) {
   Code::Kind kind = handler->handler_kind();
   // Use the same cache holder for the IC as for the handler.
   InlineCacheHolderFlag cache_holder =
       Code::ExtractCacheHolderFromFlags(handler->flags());
   Handle<HeapObject> stub_holder(IC::GetCodeCacheHolder(
       isolate(), *object, cache_holder));
   Handle<Map> stub_holder_map(stub_holder->map());
   Handle<Code> ic = FindIC(
       name, stub_holder_map, kind, strict_mode, cache_holder);
   if (!ic.is_null()) return ic;
 
-  Handle<Map> map(object->map());
+  Handle<Map> map(object->GetMarkerMap(isolate()));
   if (kind == Code::LOAD_IC) {
     LoadStubCompiler ic_compiler(isolate(), cache_holder);
     ic = ic_compiler.CompileMonomorphicIC(map, handler, name);
   } else if (kind == Code::KEYED_LOAD_IC) {
     KeyedLoadStubCompiler ic_compiler(isolate(), cache_holder);
     ic = ic_compiler.CompileMonomorphicIC(map, handler, name);
   } else if (kind == Code::STORE_IC) {
     StoreStubCompiler ic_compiler(isolate(), strict_mode);
     ic = ic_compiler.CompileMonomorphicIC(map, handler, name);
   } else {
@@ skipping 1650 matching lines @@
           Handle<FunctionTemplateInfo>(
               FunctionTemplateInfo::cast(signature->receiver()));
     }
   }
 
   is_simple_api_call_ = true;
 }
 
 
 } }  // namespace v8::internal