RFR: 8278868: Add x86 vectorization support for Long.bitCount() [v2]

[Vamsi Parasa]

On Tue, 21 Dec 2021 05:10:16 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

>> Vamsi Parasa has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Add JMH micro benchmark to measure performance
>
> test/hotspot/jtreg/compiler/vectorization/TestPopCountVectorLong.java line 65:
> 
>> 63:     }
>> 64: 
>> 65:     public void vectorizeBitCount() {
> 
> We can add check based on new IR framework here.

Updated the test to use IR framework...please check...

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PR: https://git.openjdk.java.net/jdk/pull/6857