RFR: Cherry-pick: 8230401: ClassLoaderData::_keep_alive is read with wrong type in c2i entry barrier

[Aleksey Shipilev]

On 9/6/19 4:50 PM, Zhengyu Gu wrote:
> I would like to cherry pick this patch to shenandoah/jdk. It is needed for x86_32 nmethod barrier work.
> 
> http://cr.openjdk.java.net/~zgu/shenandoah/JDK-8230401_CLD-keep_alive/webrev.00/

Sure, go.

-- 
Thanks,
-Aleksey