[aarch64-port-dev ] RFR(s): 8171449" [aarch64] store_klass needs to use store release

[White, Derek]

As the "FIXME" noted, aarch64 really does need to use a store release in the "store_klass" macro, at least when a concurrent GC is in effect.

BUG: https://bugs.openjdk.java.net/browse/JDK-8171449

Webrev: http://cr.openjdk.java.net/~drwhite/8171449/webrev.01/index.html

BTW, PPC is likely to need a similar fix...

Thanks,


-        Derek