hg: shenandoah/jdk9/hotspot: Improve barriers for acmp in C1

[roman at kennke.org]

Changeset: 9476769e372d
Author:    rkennke
Date:      2016-02-12 14:06 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/9476769e372d

Improve barriers for acmp in C1

! src/cpu/x86/vm/c1_LIRAssembler_x86.cpp
! src/cpu/x86/vm/c1_LIRGenerator_x86.cpp
! src/cpu/x86/vm/shenandoahBarrierSet_x86.cpp
! src/cpu/x86/vm/templateTable_x86.cpp
! src/share/vm/c1/c1_LIRGenerator.cpp
! src/share/vm/gc/shared/barrierSet.hpp
! src/share/vm/gc/shenandoah/shenandoahBarrierSet.hpp