RFR: 8295069: [PPC64] Performance regression after JDK-8290025 [v2]

[Andrew Haley]

On Mon, 10 Oct 2022 15:07:43 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

>> I have a proposal to mitigate the performance regression (see JBS issue) on PPC64 significantly. We get most of the performance back. Please review. Implemented like on aarch64, now.
>
> Martin Doerr has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Implement like on aarch64.

Might it make sense for PPC to do what AArch64 does? We don't need any memory fence instructions on the fast path.

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PR: https://git.openjdk.org/jdk/pull/10632