hg: jdk/jdk: 8230661: ZGC: Stop reloading oops in load barriers

[erik.osterlund at oracle.com]

Changeset: 1251d78fafbf
Author:    eosterlund
Date:      2019-11-12 20:14 +0000
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/1251d78fafbf

8230661: ZGC: Stop reloading oops in load barriers
Reviewed-by: pliden, stefank

! src/hotspot/share/gc/z/zBarrier.hpp
! src/hotspot/share/gc/z/zBarrier.inline.hpp
! src/hotspot/share/gc/z/zHeap.cpp
! src/hotspot/share/gc/z/zUnload.cpp
! src/hotspot/share/gc/z/zUnload.hpp