RFR: 8352675: Support Intel AVX10 converged vector ISA feature detection [v15]

[Vladimir Ivanov]

On Wed, 7 May 2025 15:28:09 GMT, Yudi Zheng <yzheng at openjdk.org> wrote:

>> Jatin Bhateja has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - Making _features_bitmap size configurable
>>  - cleanups & refactorings
>
> src/jdk.internal.vm.ci/share/classes/jdk/vm/ci/hotspot/HotSpotJVMCIBackendFactory.java line 121:
> 
>> 119:                     long featureIndex = bitIndex >>> featuresElementShiftCount;
>> 120:                     long featureBitMask = 1L << (bitIndex & featuresElementMask);
>> 121:                     assert featureIndex < featuresBitMapSize;
> 
> `featuresBitMapSize` is size in bytes while `featureIndex` is index to long array

Good catch, Yudi.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24329#discussion_r2078544595