From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1730 invoked by alias); 6 Jan 2013 08:26:35 -0000 Received: (qmail 1194 invoked by uid 48); 6 Jan 2013 08:26:12 -0000 From: "hp at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/55747] Extra registers are saved in functions that only call noreturn functions Date: Sun, 06 Jan 2013 08:26:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: rtl-optimization X-Bugzilla-Keywords: X-Bugzilla-Severity: enhancement X-Bugzilla-Who: hp 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-Changed-Fields: Status Last reconfirmed CC Ever Confirmed Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 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 X-SW-Source: 2013-01/txt/msg00393.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55747 Hans-Peter Nilsson changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2013-01-06 CC| |hp at gcc dot gnu.org Ever Confirmed|0 |1 --- Comment #2 from Hans-Peter Nilsson 2013-01-06 08:26:11 UTC --- Similarly observed for cris-elf with -O2, r194929, JFTR. If this changes, some attribute markup should be added to keep return-addresses for noreturn functions, for sake of stack-traces. Also return-addresses need to be generally kept when -fexceptions and similar are in effect, as noreturn functions can still throw.