From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 96EA63858CDB; Sat, 18 May 2024 21:54:01 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 96EA63858CDB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1716069241; bh=uhpYnqdm3BdKz/ltR0f5a6Hvh04UZ8q2NdOAkoMd/Io=; h=From:To:Subject:Date:In-Reply-To:References:From; b=CJlE0Tu7warqx6Mkgir/DkWolR7Q20MOfcEFeh6bNmLas/c4bRWCNarjZVtXWgzme jNcejcn3a4P2bidBfvwGtZW8LQhGl2pWAMkHdxeAv7vMIB/F2OMwtEv2/UZBksYzWd YmhgOOw42+YdqML+wBfdX79+YDfuToi7s8e6fh7Y= From: "pinskia 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 Date: Sat, 18 May 2024 21:54:01 +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: pinskia at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned 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 #3 from Andrew Pinski --- That is it looks like a bad interaction between `Vector(1) char` stores and reads from char. BUT I don't understand how it gets that badly wrong.=