RFR: 8351034: Add AVX-512 intrinsics for ML-DSA [v2]

[Mark Powers]

On Mon, 3 Mar 2025 19:00:59 GMT, Ferenc Rakoczi <duke at openjdk.org> wrote:

>> By using the AVX-512 vector registers the speed of the computation of the ML-DSA algorithms (key generation, document signing, signature verification) can be approximately doubled.
>
> Ferenc Rakoczi has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Added comments, removed debugging printfs

ML-DSA benchmark results for this PR

keygen    ML-DSA-44    96 us/op
keygen    ML-DSA-65   200 us/op
keygen    ML-DSA-87   272 us/op
siggen    ML-DSA-44   297 us/op
siggen    ML-DSA-65   452 us/op
siggen    ML-DSA-87   728 us/op
sigver    ML-DSA-44   115 us/op
sigver    ML-DSA-65   176 us/op
sigver    ML-DSA-87   290 us/op


ML-DSA no intrinsics

keygen    ML-DSA-44   169 us/op
keygen    ML-DSA-65   302 us/op
keygen    ML-DSA-87   444 us/op
siggen    ML-DSA-44   696 us/op
siggen    ML-DSA-65  1114 us/op
siggen    ML-DSA-87  1828 us/op
sigver    ML-DSA-44   187 us/op
sigver    ML-DSA-65   295 us/op
sigver    ML-DSA-87   473 us/op

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PR Comment: https://git.openjdk.org/jdk/pull/23860#issuecomment-2698691038