RFR: 8351034: Add AVX-512 intrinsics for ML-DSA [v4]

[Jatin Bhateja]

On Wed, 5 Mar 2025 13:10:34 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 alignment to loop entries.

src/hotspot/cpu/x86/stubGenerator_x86_64_sha3.cpp line 85:

> 83:   if (UseSHA3Intrinsics) {
> 84:     StubRoutines::_sha3_implCompress   = generate_sha3_implCompress(StubGenStubId::sha3_implCompress_id);
> 85:     StubRoutines::_double_keccak         = generate_double_keccak();

Should UseDilithiumIntrinsics guard double_keccak generation ?

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PR Review Comment: https://git.openjdk.org/jdk/pull/23860#discussion_r1982922845