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From: "xry111 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/114511] [11/12/13/14 Regression] Missed
 optimization: x = -y; x = c + x + y; ==> x=c;
Date: Thu, 28 Mar 2024 12:49:03 +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: 14.0
X-Bugzilla-Keywords: needs-bisection
X-Bugzilla-Severity: normal
X-Bugzilla-Who: xry111 at gcc dot gnu.org
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 cf_known_to_fail bug_status cf_reconfirmed_on cc short_desc
Message-ID: <bug-114511-4-ll3J3PZQxH@http.gcc.gnu.org/bugzilla/>
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114511

Xi Ruoyao <xry111 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
           Keywords|                            |needs-bisection
      Known to work|                            |7.1.0
      Known to fail|                            |8.1.0
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2024-03-28
                 CC|                            |xry111 at gcc dot gnu.org
            Summary|[Regression] Missed         |[11/12/13/14 Regression]
                   |optimization: x =3D -y; x =3D c |Missed optimization: x=
 =3D
                   |+ x + y; =3D=3D> x=3Dc;           |-y; x =3D c + x + y;=
 =3D=3D> x=3Dc;

--- Comment #1 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
Confirmed.=