hg: shenandoah/jdk9/hotspot: Shenandoah matrix update barriers should be conditional.

[ashipile at redhat.com]

Changeset: 927522e04185
Author:    shade
Date:      2017-03-09 18:50 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/927522e04185

Shenandoah matrix update barriers should be conditional.

! src/cpu/x86/vm/macroAssembler_x86.cpp
! src/cpu/x86/vm/macroAssembler_x86.hpp
! src/share/vm/c1/c1_LIRGenerator.cpp
! src/share/vm/opto/compile.cpp
! src/share/vm/opto/graphKit.cpp