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Posted to issues@ignite.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2018/08/02 07:38:00 UTC

[jira] [Commented] (IGNITE-9161) CPP: Get rid of additional copy on Get

    [ https://issues.apache.org/jira/browse/IGNITE-9161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16566455#comment-16566455 ] 

ASF GitHub Bot commented on IGNITE-9161:
----------------------------------------

GitHub user isapego opened a pull request:

    https://github.com/apache/ignite/pull/4476

    IGNITE-9161: Optimization for C++ (copy elision)

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/gridgain/apache-ignite ignite-9161

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/ignite/pull/4476.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #4476
    
----
commit 29cbdee193750df2b13ac0e37acccf6d5ef82be8
Author: Igor Sapego <is...@...>
Date:   2018-08-02T07:35:50Z

    IGNITE-9161: Optimization for C++ (copy elision)

----


> CPP: Get rid of additional copy on Get
> --------------------------------------
>
>                 Key: IGNITE-9161
>                 URL: https://issues.apache.org/jira/browse/IGNITE-9161
>             Project: Ignite
>          Issue Type: Improvement
>          Components: platforms
>    Affects Versions: 2.0
>            Reporter: Igor Sapego
>            Assignee: Igor Sapego
>            Priority: Major
>              Labels: cpp
>             Fix For: 2.7
>
>
> Currently, helper classes from {{operations.h}} header file, e.g. {{Out1Operation}} contain additional value, that can't be optimized-out by the compiler on return, even though the operation itself is a temporary object.
> As a solution, such classes should accept and operate on a reference to a temporary object, so that [copy elision|https://en.wikipedia.org/wiki/Copy_elision] can be used by a compiler.



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