RFR: 8277426: Optimize mask reduction operations on x86 [v2]

Tue Nov 23 02:41:13 UTC 2021

On Mon, 22 Nov 2021 23:19:12 GMT, Paul Sandoz <psandoz at openjdk.org> wrote:

>> Mai Đặng Quân Anh has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
>> 
>>  - Merge branch 'master' into vectorMaskReduction
>>  - reduce some dependencies with spare register
>>  - improve mask reduction logic on AVX
>
> @merykitty does this PR still disable the operations on Neon?
> 
> Answering myself, i think not from looking at the changes in the panama repo version: https://github.com/openjdk/panama-vector/pull/158/commits/9b578a3a59d577ac95b50b485bedd91463ca5ce8

> @PaulSandoz Could you please run this through Oracle testing.

Tests passed.

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PR: https://git.openjdk.java.net/jdk/pull/6447