From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 26DCE3839BF0; Tue, 30 May 2023 07:31:40 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 26DCE3839BF0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1685431900; bh=UDSG1BLFkn4AEfu0hd5V1eno/dxnMMdb5BOpxmB0uxo=; h=From:To:Subject:Date:In-Reply-To:References:From; b=npt51aEQy3v8VmjX6s9zTd2WZ3wpcpH5nrUOz5D6gmUzM9o/+8a+xVGEb7wHSJPQQ JD4rfB3zpIOlPKeikZPlRUbTO4yYM70ycm6qu357Egexczr30t8naZEnkm7kG5Qxow v6cNP8nblK5YtpMfkCDDoAE6KJOlBZlnHdPk5FBc= From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/109985] __builtin_prefetch ignored by GCC 12/13 Date: Tue, 30 May 2023 07:31:39 +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: 13.1.0 X-Bugzilla-Keywords: 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: hubicka 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=3D109985 --- Comment #7 from Richard Biener --- novops for prefetch also isn't the very best thing to do - that makes it fr= ee to schedule across loads/stores which probably isn't the intent. Of course it shouldn't be a barrier for CSE so modeling the exact perfect behavior is difficult.=