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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/109075] [13 Regression] rnflow hangs at -O3
Date: Thu, 09 Mar 2023 09:36:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109075

Thomas Koenig <tkoenig at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |12.2.0

--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I've just checked 12.2.0, and the code does not hang there.

(In reply to Jakub Jelinek from comment #6)
> jmul is used just once, so I wonder if the easiest solution wouldn't be to
> make jmul
> PARAMETER kind=3D8.

We can change the benchmark source, but we cannot change the
existing code base using the same idiom out there :-|

> Anyway, does -fwrapv work around it too?

Yes, -frwapv works.

We could just include that in -std=3Dlegacy (it really is used for
legacy code) and mention it in the release notes, then.

How does that sound?=