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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/107762] [13 Regression] Recent change causing
 regressions on s390-linux-gnu
Date: Sat, 19 Nov 2022 19:07:56 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107762

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2022-11-19
     Ever confirmed|0                           |1
           Assignee|unassigned at gcc dot gnu.org      |ebotcazou at gcc do=
t gnu.org

--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Is causing at least two regressions on s390-linux-gnu:
> Tests that now fail, but worked before (19 tests):
> [ ... ]
> gcc.target/s390/arch12/mul-1.c scan-assembler-times \tmsgrkc\t 1
> gcc.target/s390/arch13/sel-1.c scan-assembler-times \tselgr(?:h|le)\t 1
> [ ... ]
>=20
> Those are the only two that I have positively confirmed are due to the
> emit_group_store change.
>=20
> I looked briefly at the resulting assembly code for the mul-1 test and it
> looks worse to me after that change.  But I'm far from an s390 expert.

Thanks for the heads up, I'll have a quick look.=