From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 29686 invoked by alias); 16 Dec 2014 16:24:16 -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 29658 invoked by uid 48); 16 Dec 2014 16:24:13 -0000 From: "ebotcazou at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/64331] regcprop propagates registers noted as REG_DEAD Date: Tue, 16 Dec 2014 16:24:00 -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: 5.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: ebotcazou 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: bug_status cf_reconfirmed_on cc 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: 2014-12/txt/msg01901.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64331 Eric Botcazou changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2014-12-16 CC| |ebotcazou at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #3 from Eric Botcazou --- Right, RTL passes aren't required to maintain REG_DEAD/REG_UNUSED notes, it's the job of the DF framework. And this is not done automatically, the consumers of the notes must request it by means of df_note_add_problem prior to calling the DF analyzer.