RFR: 8348561: Add aarch64 intrinsics for ML-DSA [v5]

[Bhavana Kilambi]

On Thu, 6 Feb 2025 18:47:54 GMT, Ferenc Rakoczi <duke at openjdk.org> wrote:

>> By using the aarch64 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:
> 
>   Adding comments + some code reorganization

src/hotspot/cpu/aarch64/assembler_aarch64.hpp line 2618:

> 2616:   INSN(smaxp,  0, 0b101001, false); // accepted arrangements: T8B, T16B, T4H, T8H, T2S, T4S
> 2617:   INSN(sminp,  0, 0b101011, false); // accepted arrangements: T8B, T16B, T4H, T8H, T2S, T4S
> 2618:   INSN(sqdmulh,0, 0b101101, false); // accepted arrangements: T4H, T8H, T2S, T4S

Hi, not a comment on the algorithm itself but you might have to add these new instructions in the gtest for aarch64 here - test/hotspot/gtest/aarch64/aarch64-asmtest.py and use this file to generate test/hotspot/gtest/aarch64/asmtest.out.h which would contain these newly added instructions.

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PR Review Comment: https://git.openjdk.org/jdk/pull/23300#discussion_r1950610623