RFR: 8367292: VectorAPI: Optimize VectorMask.fromLong/toLong() for SVE

[Xiaohong Gong]

On Wed, 29 Oct 2025 07:55:45 GMT, Xiaohong Gong <xgong at openjdk.org> wrote:

>> Hi @eme64 , I updated a commit to rename the helper matcher function and add some comments, assertion inside the function. Would you mind taking another look at the latest change? Thanks a lot!
>
>> @XiaohongGong Thanks for the updates. I left a few more comments.
>> 
>> And thanks for filing: https://bugs.openjdk.org/browse/JDK-8370666 Are you planning on working on that, or do you know someone else? I could try, but I'm less familiar with all the concepts, and would need a lot of help.
> 
> Yeah, I'd be glad to work on that in the future, but I have some more urgent tasks to handle right now. I can probably start on it in about 3–4 weeks. Would that be okay with you?

> > > @XiaohongGong Thanks for the updates. I left a few more comments.
> > > And thanks for filing: https://bugs.openjdk.org/browse/JDK-8370666 Are you planning on working on that, or do you know someone else? I could try, but I'm less familiar with all the concepts, and would need a lot of help.
> > 
> > 
> > Yeah, I'd be glad to work on that in the future, but I have some more urgent tasks to handle right now. I can probably start on it in about 3–4 weeks. Would that be okay with you?
> 
> That would be excellent! I'm not trying to rush you, it would just be nice if we could do it in the next months :)

OK, I will try my best starting with it a few weeks later. Thanks!

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PR Comment: https://git.openjdk.org/jdk/pull/27481#issuecomment-3460334852