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

[Magnus Ihse Bursie]

On Wed, 3 Apr 2024 14:40:42 GMT, Hamlin Li <mli at openjdk.org> wrote:

> Hi,
> Can you help to review the patch?
> This pr is based on previous work and discussion in [pr 16234](https://github.com/openjdk/jdk/pull/16234), [pr 18294](https://github.com/openjdk/jdk/pull/18294).
> 
> Compared with previous prs, the major change in this pr is to integrate the source of sleef (for the steps, please check `src/jdk.incubator.vector/linux/native/libvectormath/README`), rather than depends on external sleef things (header or lib) at build or run time.
> Besides of this change, also modify the previous changes accordingly, e.g. remove some uncessary files or changes especially in make dir of jdk.
> 
> Besides of the code changes, one important task is to handle the legal process.
> 
> Thanks!

Just a quick question after giving this a glance: My understanding was that the normal libsleef build set a lot of compiler options, e.g. disabling built-in maths etc. You don't seem to set any of these. Have you determined that they were not needed?

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PR Comment: https://git.openjdk.org/jdk/pull/18605#issuecomment-2035409207