[jdk21u-dev] RFR: 8319777: Zero: Support 8-byte cmpxchg

[Paul Hohensee]

On Sat, 3 Feb 2024 10:09:53 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to improve Zero support.
> 
> Additional testing:
>  - [x] Linux x86_32 Zero, `jcstress` run
>  - [x] Large matrix of Zero builds

Marked as reviewed by phh (Reviewer).

-------------

PR Review: https://git.openjdk.org/jdk21u-dev/pull/232#pullrequestreview-1868223491