RFR(S): 8235636: gc/shenandoah/compiler/TestUnsafeOffheapSwap.java fails after JDK-8226411

[Roman Kennke]

Looks good! Thanks!

I presume that you have run appropriate testing.?

Roman


> http://cr.openjdk.java.net/~roland/8235636/webrev.00/
> 
> ShenandoahBarrierC2Support::is_dominator_same_ctrl() must take
> anti-dependencies into account otherwise when updating raw memory after
> a barrier is expanded, a load may be reordered wrt a store.
> 
> Roland.
>