RFR(S): 8248598: [Graal] Several testcases from applications/jcstress/acqrel.java fails with forbidden state

[Roland Westrelin]

> I confirmed that VolatileAccessReadEliminationTest fails without the 
> patch and passed with it.

Thanks for checking. Can I push the change? Do I need to have it go
through the submit repo?

Roland.