Fix ICs for slow objects with native accessor.

src/ic.cc

Index: src/ic.cc
diff --git a/src/ic.cc b/src/ic.cc
index a6b7a1df8c7a3a98535cb835ebf91cda33c5e912..69a3f2a65f2e9a459a01c33f9fac488c9151c4f6 100644
--- a/src/ic.cc
+++ b/src/ic.cc
@@ -989,6 +989,7 @@ void LoadIC::UpdateCaches(LookupResult* lookup,
         if (callback->IsAccessorInfo()) {
           Handle<AccessorInfo> info = Handle<AccessorInfo>::cast(callback);
           if (v8::ToCData<Address>(info->getter()) == 0) return;
+          if (!receiver->HasFastProperties()) return;
           if (!info->IsCompatibleReceiver(*receiver)) return;
           code = isolate()->stub_cache()->ComputeLoadCallback(
               name, receiver, holder, info);
@@ -1265,6 +1266,7 @@ void KeyedLoadIC::UpdateCaches(LookupResult* lookup,
         Handle<AccessorInfo> callback =
             Handle<AccessorInfo>::cast(callback_object);
         if (v8::ToCData<Address>(callback->getter()) == 0) return;
+        if (!receiver->HasFastProperties()) return;
         if (!callback->IsCompatibleReceiver(*receiver)) return;
         code = isolate()->stub_cache()->ComputeKeyedLoadCallback(
             name, receiver, holder, callback);
@@ -1484,6 +1486,7 @@ void StoreIC::UpdateCaches(LookupResult* lookup,
       if (callback->IsAccessorInfo()) {
         Handle<AccessorInfo> info = Handle<AccessorInfo>::cast(callback);
         if (v8::ToCData<Address>(info->setter()) == 0) return;
+        if (!receiver->HasFastProperties()) return;
         ASSERT(info->IsCompatibleReceiver(*receiver));
         code = isolate()->stub_cache()->ComputeStoreCallback(
             name, receiver, info, strict_mode);