[KeyedLoadIC] Support Smi "handlers" for simple field loads

src/counters.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_COUNTERS_H_
 #define V8_COUNTERS_H_
 
 #include "include/v8.h"
 #include "src/allocation.h"
 #include "src/base/platform/elapsed-timer.h"
@@ skipping 687 matching lines @@
   /* Dummy counter for the unexpected stub miss. */ \
   V(UnexpectedStubMiss)
 
 #define FOR_EACH_HANDLER_COUNTER(V)             \
   V(IC_HandlerCacheHit)                         \
   V(KeyedLoadIC_LoadIndexedStringStub)          \
   V(KeyedLoadIC_LoadIndexedInterceptorStub)     \
   V(KeyedLoadIC_KeyedLoadSloppyArgumentsStub)   \
   V(KeyedLoadIC_LoadFastElementStub)            \
   V(KeyedLoadIC_LoadDictionaryElementStub)      \
-  V(KeyedLoadIC_PolymorphicElement)             \
+  V(KeyedLoadIC_SlowStub)                       \
   V(KeyedStoreIC_KeyedStoreSloppyArgumentsStub) \
   V(KeyedStoreIC_StoreFastElementStub)          \
   V(KeyedStoreIC_StoreElementStub)              \
   V(KeyedStoreIC_Polymorphic)                   \
   V(LoadIC_FunctionPrototypeStub)               \
   V(LoadIC_LoadApiGetterStub)                   \
   V(LoadIC_LoadCallback)                        \
   V(LoadIC_LoadConstant)                        \
   V(LoadIC_LoadConstantStub)                    \
   V(LoadIC_LoadField)                           \
@@ skipping 515 matching lines @@
 
   explicit Counters(Isolate* isolate);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Counters);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COUNTERS_H_