Also support smi in load-ICs.

src/stub-cache.h

Index: src/stub-cache.h
diff --git a/src/stub-cache.h b/src/stub-cache.h
index 2f78fded7841356c71715788e5310ccac32f4c81..1daffff4a957961d5c9f63f6f92e8e3d893f2b99 100644
--- a/src/stub-cache.h
+++ b/src/stub-cache.h
@@ -93,7 +93,7 @@ class StubCache {
                            StrictModeFlag strict_mode = kNonStrictMode);
 
   Handle<Code> ComputeMonomorphicIC(Handle<Name> name,
-                                    Handle<HeapObject> receiver,
+                                    Handle<Object> receiver,
                                     Handle<Code> handler,
                                     StrictModeFlag strict_mode);
 
@@ -608,6 +608,8 @@ class BaseLoadStoreStubCompiler: public StubCompiler {
 
   void InitializeRegisters();
 
+  bool HasHeapNumberMap(MapHandleList* receiver_maps);
+
   Code::Kind kind_;
   InlineCacheHolderFlag cache_holder_;
   Register* registers_;