From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 9600 invoked by alias); 4 Jan 2009 18:45:36 -0000 Received: (qmail 9580 invoked by uid 48); 4 Jan 2009 18:45:28 -0000 Date: Sun, 04 Jan 2009 18:45:00 -0000 Message-ID: <20090104184528.9579.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug rtl-optimization/38722] [4.4 Regression] Revision 143027 causes ICE in find_decomposable_subregs In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "steven at gcc dot gnu dot org" 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: 2009-01/txt/msg00386.txt.bz2 ------- Comment #9 from steven at gcc dot gnu dot org 2009-01-04 18:45 ------- Thanks HJ for looking into this. I think revision 143027 is not the cause, it's more likely that it uncovers a latent bug. I'm trying to reduce Joost's code to a small test case. So far, what I'm seeing is that INSN_CODE is wrong on the insn that causes the ICE. So some pass is not properly re-recognizing an insn. The ICE Joost is seeing is happening in lower_subreg2. My test case (reduced with delta) ICEs with in IRA's record_operand_cost because extract_insn is filling recog_data.operands with the wrong information. I'll accept this for now, while I'm investigating. -- steven at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |steven at gcc dot gnu dot |dot org |org Status|NEW |ASSIGNED Last reconfirmed|2009-01-04 15:27:13 |2009-01-04 18:45:28 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38722