hg: jdk/sandbox: 8209691: Allow MemBar on single memory slice

[chris.hegarty at oracle.com]

Changeset: 904cf5407ac7
Author:    roland
Date:      2018-08-22 10:29 +0200
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/904cf5407ac7

8209691: Allow MemBar on single memory slice
Reviewed-by: kvn, vlivanov

! src/hotspot/share/adlc/formssel.cpp
! src/hotspot/share/adlc/formssel.hpp
! src/hotspot/share/adlc/output_c.cpp
! src/hotspot/share/adlc/output_h.cpp
! src/hotspot/share/opto/machnode.cpp
! src/hotspot/share/opto/machnode.hpp
! src/hotspot/share/opto/matcher.cpp
! src/hotspot/share/opto/node.hpp