hg: jdk/submit15: 8247824: CTW: C2 (Shenandoah) compilation fails with SEGV in SBC2Support::pin_and_expand

[rwestrel at redhat.com]

Changeset: 95946afeaad1
Author:    roland
Date:      2020-06-18 13:51 +0200
URL:       https://hg.openjdk.java.net/jdk/submit15/rev/95946afeaad1

8247824: CTW: C2 (Shenandoah) compilation fails with SEGV in SBC2Support::pin_and_expand
Reviewed-by: rkennke, thartmann

! src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp
! src/hotspot/share/opto/loopnode.hpp
+ test/hotspot/jtreg/gc/shenandoah/compiler/TestShenandoahLRBInOuterStripMinedLoop.java