RFR: 8194691: Cleanup unnecessary casts in Atomic/OrderAccess uses

[coleen.phillimore at oracle.com]

Looks good to me.
thanks,
Coleen

On 2/7/18 5:00 PM, Kim Barrett wrote:
> Please review this removal of unnecessary casts in calls to Atomic and
> OrderAccess functions.  This isn't an attempt to be complete, but
> eliminates some easily found and easy to fix cases.
>
> Also changed some uses of Atomic::add with a negated value to instead
> use Atomic::sub.
>
> I've not made any changes around JavaThreadState and
> Thread::_thread_state manipulation.  That may require more refactoring
> to deal with than I wanted to mix in with this otherwise fairly
> straight-forward set of changes.
>
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8194691
>
> Webrev:
> http://cr.openjdk.java.net/~kbarrett/8194691/open.00/
>
> Testing:
> Mach5 {hs,jdk}-tier{1,2,3}
>
>