hg: shenandoah/jdk9/hotspot: in cset fast test in C2 IR

[rwestrel at redhat.com]

Changeset: 313a04b8b17d
Author:    roland
Date:      2017-01-03 11:31 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/313a04b8b17d

in cset fast test in C2 IR

! src/cpu/aarch64/vm/stubGenerator_aarch64.cpp
! src/cpu/x86/vm/stubGenerator_x86_64.cpp
! src/share/vm/gc/shenandoah/shenandoah_globals.hpp
! src/share/vm/opto/loopnode.hpp
! src/share/vm/opto/shenandoahSupport.cpp