From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26766 invoked by alias); 20 Jul 2004 08:52:15 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 26704 invoked by uid 48); 20 Jul 2004 08:52:14 -0000 Date: Tue, 20 Jul 2004 08:52:00 -0000 Message-ID: <20040720085213.26703.qmail@sourceware.org> From: "pinskia at gcc dot gnu dot org" To: gcc-bugs@gcc.gnu.org In-Reply-To: <20040627065304.16225.debian-gcc@lists.debian.org> References: <20040627065304.16225.debian-gcc@lists.debian.org> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug tree-optimization/16225] [3.5 regression] ICE: verify_ssa failed. X-Bugzilla-Reason: CC X-SW-Source: 2004-07/txt/msg02412.txt.bz2 List-Id: ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-07-20 08:52 ------- I get a slightly different ICE now: pr16225.c: In function `btbl_bitcnt': pr16225.c:9: internal compiler error: in may_propagate_copy, at tree-ssa-copy.c:130 Please submit a full bug report, with preprocessed source if appropriate. See for instructions. Here is a little simpler code: typedef unsigned long uint32; int ntbl_bitcnt(uint32 x); int btbl_bitcnt(uint32 x); char bits[256]; int btbl_bitcnt(uint32 x) { int cnt = *(char *)&x; if (0L != (x >>= 8)) return btbl_bitcnt(x); return cnt; } oh it looks like tree-loop-ch which causing this. Maybe this is the going in and out of ssa which is causing this problem and causing to loose aliasing info. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16225