hg: jdk/jdk13: 8226287: Make process_users_of_allocation handle gc barriers

[nils.eliasson at oracle.com]

Changeset: 700ef5241888
Author:    neliasso
Date:      2019-07-01 10:49 +0200
URL:       http://hg.openjdk.java.net/jdk/jdk13/rev/700ef5241888

8226287: Make process_users_of_allocation handle gc barriers
Reviewed-by: kvn, roland

! src/hotspot/share/gc/shared/c2/barrierSetC2.hpp
! src/hotspot/share/gc/z/c2/zBarrierSetC2.cpp
! src/hotspot/share/gc/z/c2/zBarrierSetC2.hpp
! src/hotspot/share/opto/macro.cpp