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Subject: [Bug libstdc++/104719] Use of `std::move` in libstdc++ leads to
 worsened debug performance
Date: Mon, 28 Feb 2022 16:56:47 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104719

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D67906,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D81159,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D90428
                 CC|                            |egallager at gcc dot gnu.o=
rg,
                   |                            |mpolacek at gcc dot gnu.org

--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
Seems related to some of the requests for more warnings about uses of std::=
move
that might degrade performance, e.g. bug 67906, bug 81159, bug 90428

Also, Marek's blog post about std::move seems relevant here:
https://developers.redhat.com/blog/2019/04/12/understanding-when-not-to-std=
move-in-c=