From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 11EA53858418; Tue, 12 Dec 2023 07:21:16 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 11EA53858418 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1702365676; bh=E8xj6Dq4q2Id0A6MKgtLdw8wm3AxaglKuYus3u57T4w=; h=From:To:Subject:Date:In-Reply-To:References:From; b=Hd+yOBOBLDTDX58pT2nnJ15xuhCE9AaVBTfZ0YHqZQwZYymaBBg2A4Le8vD4LMRiS lgVk0TCAAvVV3cF3iiSRpsWLOoa2Z5xXnyNb3pDRGWcuIYRWp3UV4rpMk4LhSfZmJi r3eu18SJcH6Q9g716YzWUmCf9yR0j/17pxTy2iT8= From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/112961] [13/14 Regression] middle-end Missed vectorization: failed to vectorize simple reduction max since GCC-13 Date: Tue, 12 Dec 2023 07:21:15 +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, needs-bisection X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: 13.3 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status assigned_to 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=3D112961 Richard Biener changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot = gnu.org --- Comment #3 from Richard Biener --- Yup, unpropagated copies can confuse the vectorizer. Let me look into it.=