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

[Ferenc Rakoczi]

On Thu, 6 Mar 2025 08:37:57 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

>> 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 ?

No, that is more of a SHA3 thing, other algorithms can take advantage of it, too (e.g. ML-KEM).

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PR Review Comment: https://git.openjdk.org/jdk/pull/23860#discussion_r1983033331