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:

>> Hamlin Li has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - disable unused-function warnings; add log msg
>>  - minor
>
> 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.
> 
> 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?

Hey @vidmik , I just added inline header file for riscv64, hope to help avoid go through the legal process for arm and riscv header files separately.

For implementation on riscv64, I will put it in another pr.

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PR Comment: https://git.openjdk.org/jdk/pull/18605#issuecomment-2101055673