From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7662 invoked by alias); 8 Dec 2012 10:28:36 -0000 Received: (qmail 7557 invoked by uid 55); 8 Dec 2012 10:28:09 -0000 From: "gjl at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug other/54814] [4.8 Regression] ICE: unable to find a register to spill in class 'R0_REG' Date: Sat, 08 Dec 2012 10:28:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: other X-Bugzilla-Keywords: ice-on-valid-code, ra X-Bugzilla-Severity: normal X-Bugzilla-Who: gjl at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P4 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.8.0 X-Bugzilla-Changed-Fields: 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: 2012-12/txt/msg00786.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54814 --- Comment #7 from Georg-Johann Lay 2012-12-08 10:28:07 UTC --- Many thanks for your help! Mike Stein stopped posting test results quite some time ago. Dunno why, he does not respond to email. avr.h defines R0_REG as register class with 1 fixed register, r0. This regclass is subset of NO_LD_REGS and GENERAL_REGS, which is odd. R0_REG does not make much sense to me, thus remove it from NO_LD_REGS and GENERAL_REGS or delete that regclass and constraint "t" completely. I'll try next week and report back.