From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 3633 invoked by alias); 17 Aug 2011 17:19:59 -0000 Received: (qmail 3622 invoked by uid 22791); 17 Aug 2011 17:19:58 -0000 X-SWARE-Spam-Status: No, hits=-2.9 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 17 Aug 2011 17:19:44 +0000 From: "ramana at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/50106] [ARM] Wrong code with -march=armv5t -mthumb -Os Date: Wed, 17 Aug 2011 17:23:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: ramana 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: Keywords Status Last reconfirmed CC Ever Confirmed Known to fail 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: 2011-08/txt/msg01517.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50106 Ramana Radhakrishnan changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |wrong-code Status|UNCONFIRMED |NEW Last reconfirmed| |2011-08-17 CC| |ramana at gcc dot gnu.org Ever Confirmed|0 |1 Known to fail| |4.6.1, 4.7.0 --- Comment #3 from Ramana Radhakrishnan 2011-08-17 17:19:14 UTC --- Looks suspiciously similar to PR45070. Ramana The patch below *might* fix it - completely untested. diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index fc2fd47..affa7b3 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -21124,7 +21124,7 @@ thumb_unexpanded_epilogue (void) if (extra_pop > 0) { unsigned long extra_mask = (1 << extra_pop) - 1; - live_regs_mask |= extra_mask << (size / UNITS_PER_WORD); + live_regs_mask |= extra_mask << ((size + 3) / UNITS_PER_WORD); } /* The prolog may have pushed some high registers to use as