git: openjdk/jdk: 8255991: Shenandoah: Apply 'weak' LRB on cmpxchg and xchg

[Roman Kennke]

Changeset: d99e1f6c
Author:    Roman Kennke <rkennke at openjdk.org>
Date:      2020-11-09 09:19:13 +0000
URL:       https://github.com/openjdk/jdk/commit/d99e1f6c

8255991: Shenandoah: Apply 'weak' LRB on cmpxchg and xchg

Reviewed-by: shade

! src/hotspot/cpu/x86/gc/shenandoah/c1/shenandoahBarrierSetC1_x86.cpp
! src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp
! src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.inline.hpp