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https://issues.apache.org/jira/browse/ARROW-8227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17067558#comment-17067558
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Yibo Cai commented on ARROW-8227:
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Would start with a smaller scope. First to refine defining simd feature macros.
> [C++] Propose refining SIMD code framework
> ------------------------------------------
>
> Key: ARROW-8227
> URL: https://issues.apache.org/jira/browse/ARROW-8227
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Yibo Cai
> Assignee: Yibo Cai
> Priority: Major
>
> Arrow supports wide range of hardware(x86,arm,ppc?) +
> os(linux,windows,macos,others?) + compiler(gcc,clang,msvc,others?). Managing
> platform dependent code is non-trivial. This Jira aims to refine(or mess up)
> simd related code framework.
> Some goals: Move simd feature definition into one place, possibly in cmake,
> and reduce compiler based ifdef is source code. Manage simd code in one
> place, but leave non-simd default implementations where they are. Shouldn't
> introduce any performance penalty, prefer direct inline to runtime
> dispatcher. Code should be easy to maintain, expand, and hard to make
> mistakes.
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