[jdk17u] RFR: 8261495: Shenandoah: reconsider update references memory ordering

[Goetz Lindenmaier]

On Fri, 12 Nov 2021 08:21:51 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to improve Shenandoah performance.
> 
> Additional testing: 
>  - [x] Linux x86_64 fastdebug `hotspot_gc_shenandoah`
>  - [x] Linux x86_64 fastdebug `tier1` with Shenandoah
>  - [x] Linux AArch64 fastdebug `hotspot_gc_shenandoah`
>  - [ ] Linux AArch64 fastdebug `tier1` with Shenandoah

Please redo the PR on jdk17u-dev.  Then you can push.

Please redo the PR on jdk17u-dev.  Then you can push.

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PR: https://git.openjdk.java.net/jdk17u/pull/254