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https://issues.apache.org/jira/browse/IMPALA-11459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17770235#comment-17770235
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Michael Smith commented on IMPALA-11459:
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Using LLVM 5's optimization pass pipeline helped a lot, although we still see
~1-2% worse performance vs the current state.
> Upgrade llvm to a more recent version
> -------------------------------------
>
> Key: IMPALA-11459
> URL: https://issues.apache.org/jira/browse/IMPALA-11459
> Project: IMPALA
> Issue Type: Improvement
> Reporter: Abhishek Rawat
> Assignee: Michael Smith
> Priority: Major
>
> We are currently using llvm version 5. llvm 14 is the latest released
> version. There is scope for utilizing improved optimization passes and other
> improvements that come with the newer versions. We should look into upgrading
> llvm to a more recent version.
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