CallIC must update type feedback info correctly.

src/ic-inl.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_IC_INL_H_
 #define V8_IC_INL_H_
 
 #include "src/ic.h"
 
 #include "src/compiler.h"
@@ skipping 150 matching lines @@
   Context* native_context = *isolate->native_context();
   JSFunction* builtin_ctor = GetRootConstructor(type, native_context);
   if (builtin_ctor != NULL) {
     *flag = kCacheOnPrototype;
     return handle(builtin_ctor->initial_map());
   }
   *flag = kCacheOnReceiver;
   return TypeToMap(type, isolate);
 }
 
+
+IC::State CallIC::FeedbackObjectToState(Object* feedback) const {
+  IC::State state = UNINITIALIZED;
+
+  if (feedback == *TypeFeedbackInfo::MegamorphicSentinel(isolate())) {
+    state = GENERIC;
+  } else if (feedback->IsAllocationSite() || feedback->IsJSFunction()) {
+    state = MONOMORPHIC;
+  } else {
+    CHECK(feedback == *TypeFeedbackInfo::UninitializedSentinel(isolate()));
+  }
+
+  return state;
+}
 } }  // namespace v8::internal
 
 #endif  // V8_IC_INL_H_