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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/107196] [13 Regression] llvm-14.0.6 is miscompiles by
 gcc-13 in -O3: hangs llvm testsuite (inliner seems to break it)
Date: Fri, 21 Oct 2022 06:28:42 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107196

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Sergei Trofimovich from comment #8)
> I confirm that today's master does not exhibit the failure. Bisecting to =
the
> fix ends up at this fix:
>=20
>   commit c9b840db504d15db01f06fe1fec38282dbafee07
>   Author: Aldy Hernandez <aldyh@redhat.com>
>   Date:   Mon Oct 17 18:56:24 2022 +0200
>=20
>     Make sure exported range for SSA post-dominates the DEF in
> set_global_ranges_from_unreachable_edges.
>=20
>     The problem here is that we're exporting a range for an SSA range that
>     happens on the other side of a __builtin_unreachable, but the SSA does
>     not post-dominate the definition point.  This is causing ivcanon to
>     unroll things incorrectly.
>=20
>     This was a snafu when converting the code from evrp.
>=20
>             PR tree-optimization/107293
>=20
> Looks plausible?

Yes because that patch fixes the problem from the patch which you had
originally bisect the issue down to.

So just closing as a dup of bug 107293.

*** This bug has been marked as a duplicate of bug 107293 ***=