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

[Hamlin Li]

> Hi,
> Can you help to review this patch?
> Thanks
> 
> This is a continuation of work based on [1] by @XiaohongGong, most work was done in that pr. In this new pr, just rebased the code in [1], then added some minor changes (renaming of calling method, add libsleef as extra lib in CI cross-build on aarch64 in github workflow); I aslo tested the combination of following scenarios:
> * at build time
>   * with/without sleef
>   * with/without sve support 
> * at runtime
>   * with/without sleef
>   * with/without sve support 
> 
> [1] https://github.com/openjdk/jdk/pull/16234
> 
> ## Regression Test
> * test/jdk/jdk/incubator/vector/
> * test/hotspot/jtreg/compiler/vectorapi/
> 
> ## Performance Test
> Previously, @XiaohongGong has shared the data: https://github.com/openjdk/jdk/pull/16234#issuecomment-1767727028

Hamlin Li has updated the pull request incrementally with one additional commit since the last revision:

  fix variable name in github workflow

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18294/files
  - new: https://git.openjdk.org/jdk/pull/18294/files/55b118d9..668d08ce

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18294&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18294&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18294.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18294/head:pull/18294

PR: https://git.openjdk.org/jdk/pull/18294