[Bug middle-end/105629] [13 Regression] g++.dg/opt/pr94589-2.C for cris, m68k, s390x
rguenther at suse dot de
gcc-bugzilla@gcc.gnu.org
Fri May 20 06:07:15 GMT 2022
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105629
--- Comment #2 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 19 May 2022, hp at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105629
>
> Hans-Peter Nilsson <hp at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |rguenth at gcc dot gnu.org
>
> --- Comment #1 from Hans-Peter Nilsson <hp at gcc dot gnu.org> ---
> It's r13-204-g93416de0cb7235, "Remove GIMPLE restriction of ! using match.pd
> patterns". A brief look at the diff of the assembly between that and that^
> indicates a code quality regression.
I wonder if you can help and "bisect" the actual pattern that is now
enabled for GENERIC folding? The testcase is about spaceship optimization
and the matching done in forwprop might be quite specific and in the need
of a slight adjustment.
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