From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id E21AA3858D35; Sat, 17 Jun 2023 01:58:27 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E21AA3858D35 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1686967107; bh=KpU2AixcjexvMBO5OzLy2l8vOR90Acy1H6Hv05tR9so=; h=From:To:Subject:Date:In-Reply-To:References:From; b=ZuXCytJ9kYsZh+pJkGT3opWTG/LEZpwpuIURsUqzKvC4vCG+uT7f/uJZ/vVmNAOsi 4aVPA0ELheLd6wI6RIIpohEX/0V/zJ89Ly3miv8Ql9vBlOaHms5mvmTl7cck3kN2sj OwYZlz+D4cP2wRKIT0YhgBqtVNFgRKIPEnnuulc8= From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/110293] Some `A CMP (A NEEQ 0)` is not simplified in some cases Date: Sat, 17 Jun 2023 01:58:27 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 14.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: enhancement X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110293 --- Comment #2 from Andrew Pinski --- Some more generally for the =3D=3D/!=3D cases for CSTs: x =3D=3D (x =3D=3D CST) -> CST =3D=3D 0 ? 0 : (CST =3D=3D 1 ? (x=3D=3D0||x= =3D=3D1) : x !=3D 0) x =3D=3D (x !=3D CST) -> CST =3D=3D 1 ? 0 : (CST =3D=3D 0 ? (x=3D=3D0||x=3D= =3D1) : x !=3D 1) x !=3D (x =3D=3D CST) -> CST =3D=3D 0 ? 1 : (CST =3D=3D 1 ? (x!=3D0&&x!=3D1= ) : x !=3D 0) x !=3D (x !=3D CST) -> CST =3D=3D 1 ? 1 : (CST =3D=3D 0 ? (x!=3D0&&x!=3D1) = : x !=3D 1)=