RFR: 8322768: Optimize non-subword vector compress and expand APIs for AVX2 target. [v2]

[Emanuel Peter]

On Thu, 4 Jan 2024 13:09:30 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Jatin Bhateja has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Updating copyright year of modified files.
>
> test/micro/org/openjdk/bench/jdk/incubator/vector/ColumnFilterBenchmark.java line 94:
> 
>> 92:            IntVector vec = IntVector.fromArray(ispecies, intinCol, i);
>> 93:            VectorMask<Integer> pred = vec.compare(VectorOperators.GT, ipivot);
>> 94:            vec.compress(pred).intoArray(intoutCol, j);
> 
> Could there be equivalent `expand` tests?

And what about some result verification? Or is there another test that does that?

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PR Review Comment: https://git.openjdk.org/jdk/pull/17261#discussion_r1441750595