hg: shenandoah/jdk9/hotspot: missing memory barrier in acmp

[rwestrel at redhat.com]

Changeset: b329d9c36925
Author:    roland
Date:      2016-10-28 14:27 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/b329d9c36925

missing memory barrier in acmp

! src/share/vm/opto/graphKit.cpp
! src/share/vm/opto/library_call.cpp
! src/share/vm/opto/subnode.cpp