[jira] [Resolved] (ARROW-1822) [C++] Add SSE4.2-accelerated hash kernels and use if host CPU supports

["Antoine Pitrou (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-1822?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou resolved ARROW-1822.
-----------------------------------
    Resolution: Duplicate
      Assignee: Antoine Pitrou

> [C++] Add SSE4.2-accelerated hash kernels and use if host CPU supports
> ----------------------------------------------------------------------
>
>                 Key: ARROW-1822
>                 URL: https://issues.apache.org/jira/browse/ARROW-1822
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++
>            Reporter: Wes McKinney
>            Assignee: Antoine Pitrou
>            Priority: Major
>
> SSE4.2 has CRC32 intrinsics that can be used to compute hash values. It seems it may be acceptable to use {{-msse4.2}} on isolated compilation units, but if this object code is used on a machine without support for the SIMD instructions, then it will crash



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