From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id D42BB3858D34; Tue, 21 May 2024 06:38:07 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D42BB3858D34 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1716273487; bh=6du8NLaobOwOCLpJUJOClF/37k2kYsl7D0lUvA0x0ao=; h=From:To:Subject:Date:In-Reply-To:References:From; b=evjn55vjSWtUBDu9mFzWeT7OI7/syP8GD+oRi2FAC+9Urqa5B9R3K1b/gR5q7hSuC PFLxR6qGa7v0u6hxLv+mRcnUvSMDev7ZYdPVmnV8fvRzuBMaJGZ+2CPsYxFiPwojac R2KEk3Kkvu+8C7644dkhlN228BWYsMlfX3qgTj5A= From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/115152] [13/14/15 Regression] wrong code at -O3 with "-fno-tree-fre -fno-tree-dominator-opts -fno-tree-loop-im" on x86_64-linux-gnu since r13-455 Date: Tue, 21 May 2024 06:38:07 +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: 15.0 X-Bugzilla-Keywords: wrong-code 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: jakub at gcc dot gnu.org X-Bugzilla-Target-Milestone: 13.3 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=3D115152 --- Comment #6 from Richard Biener --- (In reply to Jakub Jelinek from comment #5) > Ugh, slp creates here V1QImode vectors? Why? That can't be ever faster > than just scalar QImode, no? We do not reject single-lane vectors iff the target happily supports them. It definitely would have avoided some bugs if we did - but it's also good we fix those.=