From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 15605 invoked by alias); 1 Sep 2014 18:24:15 -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 15460 invoked by uid 48); 1 Sep 2014 18:24:11 -0000 From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/62642] x86 rdtsc is moved through barrier Date: Mon, 01 Sep 2014 18:24:00 -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: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: keywords bug_status cf_reconfirmed_on everconfirmed 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: 2014-09/txt/msg00158.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62642 Andrew Pinski changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |wrong-code Status|UNCONFIRMED |NEW Last reconfirmed| |2014-09-01 Ever confirmed|0 |1 --- Comment #1 from Andrew Pinski --- The problem shows up in IRA stage. New iteration of spill/restore move +++Costs: overall -65521000, reg -65536000, mem 15000, ld 0, st 0, move 0 +++ move loops 0, new jumps 0 scanning new insn with uid = 22. moving def of 88 (insn 6 now) deleting insn with uid = 21. deleting insn with uid = 6. rescanning insn with uid = 22. 22) rather than keep unallocated replacement 93