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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/105558] [10 Regression] simple 8-bit integer
 calculation fails with -O3 / march=core-avx2 on some gfortran 8/9/10 versions
Date: Thu, 27 Oct 2022 04:58:51 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 10.3.0
X-Bugzilla-Keywords: needs-bisection, wrong-code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105558

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|simple 8-bit integer        |[10 Regression] simple
                   |calculation fails with -O3  |8-bit integer calculation
                   |/ march=3Dcore-avx2 on some   |fails with -O3 /
                   |gfortran 8/9/10 versions    |march=3Dcore-avx2 on some
                   |                            |gfortran 8/9/10 versions
      Known to work|                            |7.3.0
      Known to fail|                            |8.1.0
   Target Milestone|---                         |10.5
           Keywords|                            |needs-bisection

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Would be interesting to find what patch broke this and what patch fixed the
-mtune=3Dgeneric case.=