[jdk17u-dev] RFR: 8274615: Support relaxed atomic add for linux-aarch64

[Andrew Haley]

On Mon, 22 May 2023 09:21:25 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to unlock AArch64-specific performance improvements in VM code.
> 
> Additional testing:
>  - [x] Linux AArch64 fastdebug `tier1 tier2 tier3`

Marked as reviewed by aph (Reviewer).

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PR Review: https://git.openjdk.org/jdk17u-dev/pull/1383#pullrequestreview-1443417710