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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/113072] `(a ^ CST0) & (~a ^ CST0)` is not optimized to 0 at the gimple level
Date: Mon, 01 Jan 2024 00:33:22 +0000	[thread overview]
Message-ID: <bug-113072-4-dakT593cDS@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-113072-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113072

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #2)
> Looks like bool sometimes produces != or ^ :)
> ```
> bool foo(bool a, int b)
> {
>         bool b1 = b == 1;
>         bool b2 = !b1;
>         bool c = (a ^ b1);
>         return  c & (a ^ b2);
> }
> ```
> Though that is PR 111149 .

I filed a related testcase to the above as PR 113186 but it does not handle the
above I think.

      parent reply	other threads:[~2024-01-01  0:33 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-18 18:53 [Bug tree-optimization/113072] New: " pinskia at gcc dot gnu.org
2023-12-18 19:03 ` [Bug tree-optimization/113072] " pinskia at gcc dot gnu.org
2023-12-18 19:03 ` pinskia at gcc dot gnu.org
2023-12-18 19:09 ` pinskia at gcc dot gnu.org
2023-12-18 19:10 ` pinskia at gcc dot gnu.org
2023-12-18 19:40 ` pinskia at gcc dot gnu.org
2024-01-01  0:33 ` pinskia at gcc dot gnu.org [this message]

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