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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2017/11/16 04:37:00 UTC

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

Wes McKinney created ARROW-1822:
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             Summary: [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


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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