RFR: keep read barrier on final field access

[Roman Kennke]

Am 23.10.2017 um 15:32 schrieb Roland Westrelin:
>> Do we want to wire it up with TrustFinalNonStaticFields? I.e. if
>> TrustFinalNonStaticFields is set, also set our own flag?
> That seems risky to me and I think it would be best that
> ShenandoahOptimizeInstanceFinals be enabled only if explicitly
> requested.
>
> Here is a new webrev:
>
> http://cr.openjdk.java.net/~roland/shenandoah/rbonfinalinstancefield/webrev.01/
>
> Roland.
>
It looks ok to me.

Thanks,

Roman