hg: jdk/jdk: 8237007: Shenandoah: assert(_base == Tuple) failure during C2 compilation

[rwestrel at redhat.com]

Changeset: 255d1be6295f
Author:    roland
Date:      2020-01-09 17:26 +0100
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/255d1be6295f

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

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