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Posted to issues@arrow.apache.org by "Dimitri Vorona (JIRA)" <ji...@apache.org> on 2018/08/14 20:22:00 UTC

[jira] [Comment Edited] (ARROW-3051) [C++] Status performance optimization from Impala/Kudu

    [ https://issues.apache.org/jira/browse/ARROW-3051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16580379#comment-16580379 ] 

Dimitri Vorona edited comment on ARROW-3051 at 8/14/18 8:21 PM:
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In that case copy-elision won't work even with the change  [http://cpp.sh/3x25h] . Even worse: while using const reference with temporary gives a correct behaviour, it disables RVO, since it isn't specified to work on references (see returnNoisy[2-4]).

 


was (Author: alendit):
In that case copy-elision won't work either  [http://cpp.sh/3x25h] . Even worse: while using const reference with temporary gives a correct behaviour, it disables RVO, since it isn't specified to work on references (see returnNoisy[2-4]).

 

> [C++] Status performance optimization from Impala/Kudu
> ------------------------------------------------------
>
>                 Key: ARROW-3051
>                 URL: https://issues.apache.org/jira/browse/ARROW-3051
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Wes McKinney
>            Priority: Major
>             Fix For: 0.11.0
>
>
> Just saw this patch, worth investigating: https://github.com/apache/impala/commit/ea615d1d8026dbe1cda3f5c2b048d210b2df435b



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