[jdk17u] Integrated: 8261579: AArch64: Support for weaker memory ordering in Atomic

[Aleksey Shipilev]

On Mon, 8 Nov 2021 10:19:31 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to improve AArch64 performance in selected places.
> 
> Addtional testing:
>  - [x] Linux AArch64 fastdebug build
>  - [x] Linux AArch64 fastdebug `tier1`
>  - [x] Linux AArch64 fastdebug `tier2`
>  - [x] Linux AArch64 release, jcstress `-m quick`

This pull request has now been integrated.

Changeset: 16a191c5
Author:    Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.java.net/jdk17u/commit/16a191c56e07feae1dab067b32ba17af0b6ee688
Stats:     117 lines in 6 files changed: 112 ins; 2 del; 3 mod

8261579: AArch64: Support for weaker memory ordering in Atomic

Reviewed-by: aph
Backport-of: a97715755d01b88ad9e4cf32f10ca5a3f2fda898

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PR: https://git.openjdk.java.net/jdk17u/pull/239