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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2019/07/10 19:38:00 UTC

[jira] [Resolved] (ARROW-5458) [C++] ARMv8 parallel CRC32c computation optimization

     [ https://issues.apache.org/jira/browse/ARROW-5458?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wes McKinney resolved ARROW-5458.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 0.14.1
                   1.0.0

Issue resolved by pull request 4427
[https://github.com/apache/arrow/pull/4427]

> [C++] ARMv8 parallel CRC32c computation optimization
> ----------------------------------------------------
>
>                 Key: ARROW-5458
>                 URL: https://issues.apache.org/jira/browse/ARROW-5458
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Yuqi Gu
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 1.0.0, 0.14.1
>
>          Time Spent: 4h 20m
>  Remaining Estimate: 0h
>
> ARMv8 defines VMULL/PMULL crypto instruction.
> This patch optimizes crc32c calculate with the instruction when
> available rather than original linear crc instructions.



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