RFR: 8223078: Add microbenchmark for array copying/clearing/resizing

[Doug Lea]

On 4/29/19 12:39 PM, Martin Buchholz wrote:
> 8223078: Add microbenchmark for array copying/clearing/resizing
> https://cr.openjdk.java.net/~martin/webrevs/jdk/ArrayFiddle-jmh/
> https://bugs.openjdk.java.net/browse/JDK-8223078
> 

Looks good, although even more informative would be to try some
different sizes to see if there are any size-dependent trends.

-Doug