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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/105431] ICE: SIGSEGV in powi_as_mults_1
 (tree-ssa-math-opts.cc:1512) with -Ofast and __builtin_pow()
Date: Fri, 29 Apr 2022 08:17:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105431

--- Comment #3 from rguenther at suse dot de <rguenther at suse dot de> ---
On Fri, 29 Apr 2022, jakub at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105431
>=20
> Jakub Jelinek <jakub at gcc dot gnu.org> changed:
>=20
>            What    |Removed                     |Added
> -------------------------------------------------------------------------=
---
>                  CC|                            |jakub at gcc dot gnu.org
>=20
> --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> While you touch it, shouldn't e.g.
>   /* Avoid largest negative number.  */
>   if (n !=3D -n
> be fixed as well (don't we fold that as n !=3D 0?)?

Yeah, that probably guarded against the other misuses of -n ... in
fact we should handle the most negative number fine now so I'm
going to just remove this check (n =3D=3D 0 is also handled well).=