From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 6828 invoked by alias); 8 May 2014 17:18:33 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 6772 invoked by uid 48); 8 May 2014 17:18:30 -0000 From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/59952] -march=core-avx2 should not enable RTM Date: Thu, 08 May 2014 17:18:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 4.8.2 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: ubizjak at gmail dot com X-Bugzilla-Target-Milestone: 4.8.3 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2014-05/txt/msg00710.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952 --- Comment #17 from Jakub Jelinek --- I'm not sure about that, after all we enable PTA_HLE even for generic. The point is whether it might be beneficial to emit the HLE prefixes or not, on CPUs that never have HLE obviously it doesn't make sense, on CPUs that sometimes or always have it it makes sense.