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Posted to issues@arrow.apache.org by "Pindikura Ravindra (Jira)" <ji...@apache.org> on 2019/12/12 03:42:00 UTC

[jira] [Created] (ARROW-7378) loop vectorization broken in gandiva

Pindikura Ravindra created ARROW-7378:
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             Summary: loop vectorization broken in gandiva
                 Key: ARROW-7378
                 URL: https://issues.apache.org/jira/browse/ARROW-7378
             Project: Apache Arrow
          Issue Type: Task
          Components: C++ - Gandiva
            Reporter: Pindikura Ravindra
            Assignee: Pindikura Ravindra


[~yibo] pointed out in the mailing list that this is broken.

 
I found that there is something in the last change to llvm_generator.cc that broke the auto vectorization.
 
[https://github.com/apache/arrow/commit/165b02d2358e5c8c2039cf626ac7326d82e3ca90]
 
If I undo this one patch, I can see the vectorization happen with Yibo Cai's test.
 



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