hg: shenandoah/jdk8/hotspot: [backport] 8237007: Shenandoah: assert(_base == Tuple) failure during C2 compilation

[rwestrel at redhat.com]

Changeset: 02224ba84e99
Author:    roland
Date:      2020-01-09 17:26 +0100
URL:       https://hg.openjdk.java.net/shenandoah/jdk8/hotspot/rev/02224ba84e99

[backport] 8237007: Shenandoah: assert(_base == Tuple) failure during C2 compilation
Reviewed-by: thartmann, rkennke

! src/share/vm/opto/loopnode.cpp
+ test/gc/shenandoah/compiler/LRBRightAfterMemBar.java