[Bug libstdc++/96733] std::clamp for floats and doubles produces worse code than a combo of std::min / std::max

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96733

--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>:

https://gcc.gnu.org/g:741c7350c08b0884689466867b6c9e711c7b109e

commit r12-4061-g741c7350c08b0884689466867b6c9e711c7b109e
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Sat Apr 17 22:34:09 2021 +0100

    libstdc++: Implement std::clamp with std::min and std::max [PR 96733]

    The compiler doesn't know about the precondition of std::clamp that
    (hi < lo) is false, and so can't optimize as well as we'd like. By using
    std::min and std::max we help the compiler.

    Signed-off-by: Jonathan Wakely <jwak...@redhat.com>

    libstdc++-v3/ChangeLog:

            PR libstdc++/96733
            * include/bits/stl_algo.h (clamp): Use std::min and std::max.