RFR (S) 8222786: Shenandoah get_barrier_strength should accept all shapes of (Weak)CAS reference barriers

[Aleksey Shipilev]

(forgot to cc hotspot-gc-dev, doing so)

On 4/20/19 11:50 AM, Aleksey Shipilev wrote:
> Bug:
>   https://bugs.openjdk.java.net/browse/JDK-8222786
> 
> Fix:
>   http://cr.openjdk.java.net/~shade/8222786/webrev.01/
> 
> See bug for the example failures. I am puzzled why those were not covered before.
> 
> Testing: hotspot_gc_shenandoah, jcstress

-Aleksey