RFR: Trivial enhancement to avoid costly deletion array element

[Zhengyu Gu]

On 08/17/2018 03:07 AM, Aleksey Shipilev wrote:
> On 08/16/2018 10:36 PM, Zhengyu Gu wrote:
>> Trivial enhancement to avoid deletion array element, which may need costly shifting tailing elements.
>> Webrev: http://cr.openjdk.java.net/~zgu/shenandoah/replace_nm/webrev.00/
> 
> Looks good!
> 
> Have you seen this code as hot, or that was a hunch? It it fine either way.

No, it is not hot. I stumbled over while chasing a weird assertion failure.

Have you seen this? 
https://paste.fedoraproject.org/paste/LyRkIj2w77dxFdWOv49yqA

or just my super *hot* computer tried to throw me something interesting :-(

-Zhengyu

> 
> Thanks,
> -Aleksey
>