From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 15863 invoked by alias); 24 Jun 2014 08:35:17 -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 15799 invoked by uid 48); 24 Jun 2014 08:35:13 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/61572] [4.10 Regression] ICE: in assign_by_spills, at lra-assigns.c:1335 Date: Tue, 24 Jun 2014 08:35:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 4.10.0 X-Bugzilla-Keywords: ra X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.10.0 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: 2014-06/txt/msg01846.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61572 --- Comment #7 from Richard Biener --- I also note that the testcase no longer does what it tries to do after fn1 is inlined. It seems to try making rdx available for the asm by loading p1 into b. But after inlining completed rdx will contain garbage. So very likely the kernel is miscompiled. [and I don't think it's well-defined to consider rdx unchanged from function entry to the load via c]