From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 7C10B385B83B; Wed, 24 Aug 2022 02:53:31 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 7C10B385B83B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1661309611; bh=M6ZG6QLPQc24WiXYRXCph/lIuznj1TrPWWRYYnH669w=; h=From:To:Subject:Date:In-Reply-To:References:From; b=oyWFCuJ1nbCHUS6U1LdF0BQNrLpesIS22c2BVxxrmLFZQfygtGgd3LllnFM09yntI Ks/G/9/wjws86xS1IhlnwhMJdvkYCUDRHFzTXFSN6ew1valawBFiDcvGDGIAJkORNc qMjog3e5RNyEG1YotHox0QFvHDvdcHfDprPX2enY= From: "linkw at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/106322] [12 Regression] tree-vectorize: Wrong code at O2 level (-fno-tree-vectorize is working) since r12-2404-ga1d27560770818c5 Date: Wed, 24 Aug 2022 02:53:30 +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: 12.1.0 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: linkw at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: linkw at gcc dot gnu.org X-Bugzilla-Target-Milestone: 12.3 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=3D106322 --- Comment #49 from Kewen Lin --- Hi Richi, One thing I'm not sure about is that if we want to backport this to gcc-11 = and gcc-10? Although the failure got exposed by .MULH pattern recog which is on= ly in gcc-12, IMHO the underlying issue exists in gcc-10 and gcc-11.=