RFR: 8255210: [Vector API] jdk/incubator/vector/Int256VectorTests.java crashes on AVX512 machines

[Paul Sandoz]

On Thu, 22 Oct 2020 03:12:31 GMT, Jie Fu <jiefu at openjdk.org> wrote:

> Hi all,
> 
> Please review the fix of an AVX512 crash for Vector API.
> The reason is that reductionI in x86.ad didn't use legVec for code generation, which is required by Assembler::vphaddd.
> 
> Testing:
>  - test/jdk/jdk/incubator/vector all passed on both AVX256 and AVX512 machines
> 
> Thanks.
> Best regards,
> Jie

LGTM based on same changes made previously for short vectors.
Good if Sandhya (@sviswa7) et. al. can review also.

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Marked as reviewed by psandoz (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/791