RFR: 8351034: Add AVX-512 intrinsics for ML-DSA [v11]

[Ferenc Rakoczi]

On Sun, 23 Mar 2025 00:21:18 GMT, Volodymyr Paprotski <vpaprotski at openjdk.org> wrote:

>> src/hotspot/cpu/x86/stubGenerator_x86_64_dilithium.cpp line 119:
>> 
>>> 117: static address dilithiumAvx512PermsAddr() {
>>> 118:   return (address) dilithiumAvx512Perms;
>>> 119: }
>> 
>> Hear me out..  ...
>> enums!!
>> 
>> enum nttPermOffset {
>>   montMulPermsIdx = 0,
>>   nttL4PermsIdx = 64,
>>   nttL5PermsIdx = 192,
>>   nttL6PermsIdx = 320,
>>   nttL7PermsIdx = 448,
>>   nttInvL0PermsIdx = 704,
>>   nttInvL1PermsIdx = 832,
>>   nttInvL2PermsIdx = 960,
>>   nttInvL3PermsIdx = 1088,
>>   nttInvL4PermsIdx = 1216,
>> };
>> static address dilithiumAvx512PermsAddr(nttPermOffset offset) {
>>   return (address) dilithiumAvx512Perms + offset;
>> }
>
> belay that comment.. now that I looked at `generate_dilithiumAlmostInverseNtt_avx512`, I see why thats not the 'entire picture'..

I leave it as it is now.

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PR Review Comment: https://git.openjdk.org/jdk/pull/23860#discussion_r2021149925