RFR: 8351034: Add AVX-512 intrinsics for ML-DSA [v3]

[Jatin Bhateja]

On Wed, 5 Mar 2025 11:33:06 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 with a new target base due to a merge or a rebase. The pull request now contains three commits:
> 
>  - Merged master.
>  - Added comments, removed debugging printfs
>  - JDK-8351034 Add AVX-512 intrinsics for ML-DSA

src/hotspot/cpu/x86/stubGenerator_x86_64_dilithium.cpp line 292:

> 290:   __ movl(iterations, 2);
> 291: 
> 292:   __ BIND(L_loop);

Please align loop entry address using __align64().

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PR Review Comment: https://git.openjdk.org/jdk/pull/23860#discussion_r1981242267