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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/101523] Huge number of combine attempts
Date: Wed, 10 Apr 2024 17:03:20 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101523

--- Comment #59 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #57)
> (In reply to Richard Biener from comment #56)
> > The fix was reverted but will be re-instantiated for GCC 15 by me.
>=20
> And I still protest.
>=20
> PR101523 is a very serious problem, way way way more "P1" than any of the
> "my target was inconvenienced by some bad testcases failing now" "P1"s th=
ere
> are now.  Please undo this!

It was a very serious problem in 2021, too.  But since we shipped with that
very serious problem it is by definition not a ship-stopper.  I'll also
point out that your previous assessment of this bug was more as an obscure
corner case.

If there's a solution avoiding the code generation regressions that can
be considered for backporting to GCC 14.2 or even earlier branches.=