RFR: 8235250: Create (test) abstraction for allocating objects that is immune to removal by optimizations

[Erik Österlund]

Hi Leo,

Looks reasonable to me.

Thanks,
/Erik

On 2019-12-04 12:32, Leo Korinth wrote:
> Hi,
>
> Please review this change to some tests that is needed for future 
> optimizations. Reference.reachabilityFence seems not to be usable for 
> ensuring GC allocations.
>
> I have added a new abstraction Allocation.blackHole(Object obj) for this.
>
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8235250
>
> Webrev:
> http://cr.openjdk.java.net/~lkorinth/8235250/00
>
> Testing:
> currently running tier 1-3 on linux
>
> Thanks,
> Leo