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From: "pilarlatiesa at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/106654] [C++23] P1774 - Portable assumptions
Date: Fri, 16 Sep 2022 09:20:10 +0000	[thread overview]
Message-ID: <bug-106654-4-aV10gL08B9@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-106654-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106654

Pilar Latiesa <pilarlatiesa at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pilarlatiesa at gmail dot com

--- Comment #5 from Pilar Latiesa <pilarlatiesa at gmail dot com> ---
(In reply to Jakub Jelinek from comment #4)
> Note, I think for [[assume(i == j)]]; we can just emit if (i == j) ; else
> __builtin_unreachable ();

It would be great if the attribute were somewhat cleverer than that. 

For example:

double my_sqrt(double const d)
{
    [[assume(d >= 0.0)]];
    return std::sqrt(d);
}

or even:

double my_sqrt(double const d)
{
    [[assume(std::isfinite(std::sqrt(d)))]]
    return std::sqrt(d);
}

  parent reply	other threads:[~2022-09-16  9:20 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-16 17:20 [Bug c++/106654] New: " mpolacek at gcc dot gnu.org
2022-09-14  9:52 ` [Bug c++/106654] " jakub at gcc dot gnu.org
2022-09-14 11:23 ` rguenth at gcc dot gnu.org
2022-09-14 11:26 ` rguenth at gcc dot gnu.org
2022-09-14 11:54 ` jakub at gcc dot gnu.org
2022-09-16  9:20 ` pilarlatiesa at gmail dot com [this message]
2022-09-16 16:48 ` jakub at gcc dot gnu.org
2022-09-17 11:34 ` aldyh at gcc dot gnu.org
2022-09-17 12:09 ` jason at gcc dot gnu.org
2022-09-17 12:12 ` aldyh at gcc dot gnu.org
2022-09-17 12:29 ` jason at gcc dot gnu.org
2022-09-17 18:32 ` aldyh at gcc dot gnu.org
2022-09-21 17:49 ` jakub at gcc dot gnu.org
2022-10-06  7:01 ` cvs-commit at gcc dot gnu.org
2022-10-07 14:20 ` jakub at gcc dot gnu.org
2022-10-08 10:45 ` jakub at gcc dot gnu.org
2022-10-18  8:40 ` cvs-commit at gcc dot gnu.org
2022-10-20  0:37 ` cvs-commit at gcc dot gnu.org
2022-10-20 19:43 ` cvs-commit at gcc dot gnu.org
2022-11-19  9:24 ` jakub at gcc dot gnu.org
2022-11-28 22:32 ` pinskia at gcc dot gnu.org

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