[jira] [Commented] (ARROW-2186) [C++] Clean up architecture specific compiler flags

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

    [ https://issues.apache.org/jira/browse/ARROW-2186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16824426#comment-16824426 ] 

Antoine Pitrou commented on ARROW-2186:
---------------------------------------

[~wesmckinn] I think so.

> [C++] Clean up architecture specific compiler flags
> ---------------------------------------------------
>
>                 Key: ARROW-2186
>                 URL: https://issues.apache.org/jira/browse/ARROW-2186
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Wes McKinney
>            Priority: Major
>             Fix For: 0.14.0
>
>
> I noticed that {{-maltivec}} is being passed to the compiler on Linux, with an x86_64 processor. That seemed odd to me. It prompted me to look more generally at our compiler flags related to hardware optimizations. We have the ability to pass {{-msse3}}, but there is a {{ARROW_USE_SSE}} which is only used as a define in some headers. There is {{ARROW_ALTIVEC}}, but no option to pass {{-march}}. Nothing related to AVX/AVX2/AVX512. I think this could do for an overhaul



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