git: openjdk/jdk17u-dev: 8285301: C2: assert(!requires_atomic_access) failed: can't ensure atomicity

[Goetz Lindenmaier]

Changeset: 7975c0ac
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2022-06-21 13:18:09 +0000
URL:       https://git.openjdk.org/jdk17u-dev/commit/7975c0ac8a130b2303f80d5201ea64460dcd0f9a

8285301: C2: assert(!requires_atomic_access) failed: can't ensure atomicity

Reviewed-by: mdoerr
Backport-of: 0a4a6403bbdfa7a9f632dbf625435d9aaf04074c

! src/hotspot/share/gc/shared/c2/barrierSetC2.cpp
! src/hotspot/share/opto/graphKit.cpp
! src/hotspot/share/opto/idealKit.cpp
! src/hotspot/share/opto/macroArrayCopy.cpp
! src/hotspot/share/opto/memnode.cpp
! src/hotspot/share/opto/memnode.hpp
! test/hotspot/jtreg/compiler/arraycopy/TestArrayCopyConjoint.java
! test/hotspot/jtreg/compiler/arraycopy/TestArrayCopyDisjoint.java
! test/hotspot/jtreg/compiler/arraycopy/TestInstanceCloneAsLoadsStores.java
+ test/hotspot/jtreg/compiler/gcbarriers/TestAlwaysAtomicAccesses.java