hg: shenandoah/jdk9/hotspot: Improved memory dependencies and simplified optimizations in C2 barriers.

[roman at kennke.org]

Changeset: ccfb27cc9b2e
Author:    rkennke
Date:      2016-03-09 15:47 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/ccfb27cc9b2e

Improved memory dependencies and simplified optimizations in C2 barriers.

! src/share/vm/opto/classes.hpp
! src/share/vm/opto/compile.cpp
! src/share/vm/opto/graphKit.cpp
! src/share/vm/opto/shenandoahSupport.cpp
! src/share/vm/opto/shenandoahSupport.hpp
! src/share/vm/opto/superword.cpp
! src/share/vm/runtime/vmStructs.cpp