hg: shenandoah/jdk: Handle checkcast arraycopy correctly in barriers. Make arraycopy+barriers a single loop.

[roman at kennke.org]

Changeset: a7a034e0dafc
Author:    rkennke
Date:      2018-02-27 14:15 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/a7a034e0dafc

Handle checkcast arraycopy correctly in barriers. Make arraycopy+barriers a single loop.
* * *
[mq]: shade-fixes

! src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.hpp
! src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.inline.hpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.inline.hpp
! src/hotspot/share/gc/shenandoah/shenandoahSharedVariables.hpp
+ test/hotspot/jtreg/gc/shenandoah/TestArrayCopyCheckCast.java
+ test/hotspot/jtreg/gc/shenandoah/TestArrayCopyStress.java