RFR: 8194759: Support caching class mirror objects

[coleen.phillimore at oracle.com]

http://cr.openjdk.java.net/~jiangli/8194759/webrev.01.inc/src/hotspot/share/classfile/javaClasses.cpp.udiff.html

This was a good suggestion.   We need to file a follow-up RFE to remove 
the compute_optional_offsets.  These were for hotspot express and when 
we didn't build the jdk with the jvm.

The Klass change looks great.  This whole change looks good to me.

Thanks,
Coleen

On 2/23/18 1:24 AM, Jiangli Zhou wrote:
> Here is the new webrev with updates that address feedbacks from Misha, Ioi, Coleen and Thomas:
>
> http://cr.openjdk.java.net/~jiangli/8194759/webrev.01/ <http://cr.openjdk.java.net/~jiangli/8194759/webrev.01/>
>
> Incremental webrev:
> http://cr.openjdk.java.net/~jiangli/8194759/webrev.01.inc/ <http://cr.openjdk.java.net/~jiangli/8194759/webrev.01.inc/>
>
> Rerunning tiered testing ...
>
> Thanks,
> Jiangli
>