RFR: 8299327: Allow super late barrier expansion of store barriers in C2 [v2]

Wed Jan 11 09:30:15 UTC 2023

On Tue, 10 Jan 2023 15:47:59 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

>> Indeed. @TheRealMDoerr would you mind having a look at this?
>
> `OptoPeephole` is a `develop_pd` flag which is only enabled on x86. So, we don't support it for PPC64.
> Even if somebody switched it on for PPC64, I don't think it would break anything.
> The predicates are used during the matching phase. The peephole optimizer runs later at a point of time at which the barrier data is no longer used.

Ah, good. Thanks for checking.

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

PR: https://git.openjdk.org/jdk/pull/11779