hg: shenandoah/jdk9/hotspot: C1 fixes to matrix barriers.

[roman at kennke.org]

Changeset: d47f09cff69d
Author:    rkennke
Date:      2017-03-24 10:19 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/d47f09cff69d

C1 fixes to matrix barriers.

! src/share/vm/c1/c1_LIRGenerator.cpp
! test/gc/stress/TestGCOldWithShenandoah.java
! test/gc/stress/gcbasher/TestGCBasherWithShenandoah.java