RFR: 8312425: [vectorapi] AArch64: Optimize vector math operations with SLEEF [v2]

[Hamlin Li]

On Tue, 9 Apr 2024 20:10:36 GMT, Mikael Vidstedt <mikael at openjdk.org> wrote:

> Thank you for the update and for working on this in general.
> 
> I've started working on JDK-8329816, preparing the change for the SLEEF specific part of the change. Specifically, I'm currently planning on including the three SLEEF header files, the README and a legal/sleef.md file in that change. Let me know if you have any thoughts/concerns.
> 

Thanks a lot, that's a great news. Please go ahead to integrate the files via JDK-8329816. :)
Besides of the performance issue currently found out, I have no other concerns. 

> Also, just for my understanding, would love to understand your thoughts on the future here (I apologize if this was already discussed elsewhere):
> 
> It seem like SLEEF is (sort of) limited to linux at this point (the SLEEF README mentions that "Due to limited test capacities, SLEEF is currently only officially supported on Linux with gcc or llvm/clang." ). That same README does, however, indicate good test coverage on several architectures in addition to aarch64 (including x86_64, PPC, RISC-V). With that in mind, it looks like we could potentially use SLEEF for other architectures on linux in the future? And potentially additional operating systems as well?

There are more informantion at https://sleef.org/compile.xhtml, seems it could be formally supported in the future, but I'm not sure about it.
Maybe others have more information could help to comment here. Thanks!

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

PR Comment: https://git.openjdk.org/jdk/pull/18605#issuecomment-2047008550