hg: jdk/jdk12: 8217042: Shenandoah: write barrier on backedge of strip mined loop causes c2 crash at expansion time

[rwestrel at redhat.com]

Changeset: 7c68a23014db
Author:    roland
Date:      2019-01-11 14:27 +0100
URL:       http://hg.openjdk.java.net/jdk/jdk12/rev/7c68a23014db

8217042: Shenandoah: write barrier on backedge of strip mined loop causes c2 crash at expansion time
Reviewed-by: rkennke, thartmann

! src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp