RFR (S) 8225743: Remove ShenandoahBarrierSetC2::escape_is_barrier_node and related GC interface

[Erik Österlund]

Hi Aleksey,

Looks good.

Thanks,
/Erik

On 2019-06-14 10:33, Aleksey Shipilev wrote:
> RFE:
>    https://bugs.openjdk.java.net/browse/JDK-8225743
> 
> This is the leftover from the times Shenandoah had an option to not optimize out barriers on newly
> allocated objects. This is have not been needed for a while. Since Shenandoah is the only user of
> this method, it makes sense to remove it completely,
> 
> Fix:
>    http://cr.openjdk.java.net/~shade/8225743/webrev.01/
> 
> Testing: hotspot_gc_shenandoah, jdk-submit
>