RFR: 8283667: [vectorapi] Vectorization for masked load with IOOBE with predicate feature [v5]

[Jatin Bhateja]

On Tue, 7 Jun 2022 02:22:53 GMT, Xiaohong Gong <xgong at openjdk.org> wrote:

>> test/micro/org/openjdk/bench/jdk/incubator/vector/LoadMaskedIOOBEBenchmark.java line 97:
>> 
>>> 95:     public void byteLoadArrayMaskIOOBE() {
>>> 96:         for (int i = 0; i < inSize; i += bspecies.length()) {
>>> 97:             VectorMask<Byte> mask = VectorMask.fromArray(bspecies, m, i);
>> 
>> For other case "if (offset >= 0 && offset <= (a.length - species.length())) )" we are anyways intrinsifying, should we limit this micro to work only for newly optimized case.
>
> Yeah, thanks and it's really a good suggestion to limit this benchmark only for the IOOBE cases. I locally modified the tests to make sure only the IOOBE case happens and the results show good as well. But do you think it's better to keep as it is since we can also see the performance of the common cases to make sure no regressions happen? As the current benchmarks can also show the performance gain by this PR.

It was just to remove the noise from a targeted micro benchmark. But we can keep it as it is.

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PR: https://git.openjdk.java.net/jdk/pull/8035