RFR: 8252847: Optimize primitive arrayCopy stubs using AVX-512 masked instructions [v5]

[Jatin Bhateja]

On Fri, 25 Sep 2020 20:52:28 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Jatin Bhateja has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   8252847 : Modifying file permission to resolve jcheck failure.
>
> test/hotspot/jtreg/compiler/arraycopy/TestArrayCopyConjoint.java line 33:
> 
>> 31:  *
>> 32:  * @run main/othervm/timeout=600 -XX:-TieredCompilation  -Xbatch -XX:+IgnoreUnrecognizedVMOptions
>> 33:  *      -XX:UseAVX=3 -XX:+UnlockDiagnosticVMOptions -XX:ArrayCopyPartialInlineSize=0 -XX:MaxVectorSize=32 -XX:+UnlockDiagnosticVMOptions
> 
> ArrayCopyPartialInlineSize flag is not defiled in these changes.
> It seems they need to be included in 8252848 changes.

Hi @vnkozlov, I have updated the pull request to cover your comments. Kindly review.
New RFE JDK-8253721 has been created for AVX3Threshold flag related changes (PR-394).

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PR: https://git.openjdk.java.net/jdk/pull/61