[vectorIntrinsics+compress] RFR: 8274975: Add micro benchmark: ALIBABA selective store use case

[Eric Liu]

On Tue, 12 Oct 2021 10:03:15 GMT, Eric Liu <eliu at openjdk.org> wrote:

> How about the performance for byte and short types? Do you have performance data comparing Java implementation against with scalar version? As some platforms may not support the compress/expand operation well. E.g., SVE doesn’t support compress on byte and short types. AVX512 maybe the same without vbmi2 extension.

I think the result of AVX2 could reflect the same issue. It's a shame that SVE misses the direct compress instruction for byte and short types.

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

PR: https://git.openjdk.java.net/panama-vector/pull/149