RFR: 8352675: Support Intel AVX10 converged vector ISA feature detection [v3]

[Jatin Bhateja]

On Thu, 10 Apr 2025 02:54:05 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

>> It has limited usage and was introduced by JDK-8324734, the comment over it mentions
>> +  // Feature identification not affected by VM flags
>> https://github.com/openjdk/jdk/pull/17590#issuecomment-1912689152
>> 
>> Unlike _featues, _cpu_featues is not even captured by JVMCI 
>> https://github.com/openjdk/jdk/blob/master/src/hotspot/share/jvmci/vmStructs_jvmci.cpp#L149
>
> I don't see how JVMCI is relevant here. 
> 
> JDK-8324734 was related to AVX512. I don't see why a very similar scenario won't be applicable to AVX10.

Yes, its has a limited usage only in C2 context.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24329#discussion_r2036422554