From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26042 invoked by alias); 14 Oct 2014 03:33:05 -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 25943 invoked by uid 48); 14 Oct 2014 03:32:59 -0000 From: "olegendo at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/59401] [SH] GBR addressing mode optimization produces wrong code Date: Tue, 14 Oct 2014 03:33:00 -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: 4.9.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: olegendo at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED 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: 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: 2014-10/txt/msg01035.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59401 --- Comment #10 from Oleg Endo --- (In reply to Kazumoto Kojima from comment #9) > (In reply to Oleg Endo from comment #8) > > change the > > value for gbr in sh.h CALL_USED_REGISTERS from '1' to '0' and confirm that > > everything is still OK? > > The comment and document about CALL_USED_REGISTERS say that it must be > a superset of FIXED_REGISTERS. CALL_REALLY_USED_REGISTERS might be > a macro for that purpose. Right. In this case it's probably better to do it in sh_conditional_register_usage. It would be nice if '-fcall-saved-gbr' and '-fcall-used-gbr' still remained functional afterwards ... I'll give it a try.