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

[Maurizio Cimadamore]

Changeset: a8087271
Author:    Maurizio Cimadamore <mcimadamore at openjdk.org>
Date:      2020-04-08 23:18:52 +0000
URL:       https://git.openjdk.java.net/panama-foreign/commit/a8087271

Add JMH test for loop over sliced segment

Reviewed-by: jvernee

! test/micro/org/openjdk/bench/jdk/incubator/foreign/LoopOverNonConstant.java