[foreign-memaccess] [Rev 01] RFR: Add JMH test for loop over sliced segment

[Jorn Vernee]

On Wed, 8 Apr 2020 21:32:50 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> This simple patch adds a simple benchmark that does a loop on a segment slice. I found this test useful when
>> investigating escape analysis issues of derived segments, so I'm adding it here. With the current implementation
>> (MemorySegmentImpl) the difference between the new `segment_loop` and `segment_loop_slice` are negligible, so this can
>> be used to spot regressions in that logic.
>
> Maurizio Cimadamore has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix duplicate method and replace it with another benchmark to check performancs of view obtained after withAccessMode
>   call.

Looks good!

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Marked as reviewed by jvernee (Committer).

PR: https://git.openjdk.java.net/panama-foreign/pull/107