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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/103680] Jump threading and switch corrupts
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Date: Wed, 28 Jun 2023 16:47:53 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103680

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Depends on|                            |25623

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #7)
> a simple testcase:
> test (int i)
> {
>         if (__builtin_expect_with_probability (i > 5, 1, 0.6))
>                 foo ();
> }
> test2(int i)
> {
>         test (i);
>         if (__builtin_expect_with_probability (i > 4, 1, 0.7))
>                 foo ();
> }
> this is can be updated quite easily, but we still fail.

That is exactly bug 25623 comment #1.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D25623
[Bug 25623] jump threading/cfg cleanup messes up "incoming counts" for some=
 BBs=