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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/113907] [12/13/14 regression] ICU miscompiled since
 on x86 since r14-5109-ga291237b628f41
Date: Fri, 16 Feb 2024 16:27:26 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113907

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aldyh at gcc dot gnu.org

--- Comment #44 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #43)
> > // See discussion here:
> > // https://gcc.gnu.org/pipermail/gcc-patches/2021-June/571709.html
> Discussion says:
>=20
> "Once legacy evrp is removed, this won't be an issue, as ranges in the IL=
=20
> will tell the truth.  However, this will mean that we will no longer=20
> remove the first __builtin_unreachable combo.  But ISTM, that would be=20
> correct behavior ??."
...

But that doesn't cause these problems, just perhaps losing some info, right?
If so, trying to change that feels like stage1 material to me.=