From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-337329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 26558 invoked by alias); 16 Nov 2010 14:52:17 -0000
Received: (qmail 26549 invoked by uid 22791); 16 Nov 2010 14:52:16 -0000
X-SWARE-Spam-Status: No, hits=-2.8 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; Tue, 16 Nov 2010 14:52:11 +0000
From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/46498] New: [4.5/4.6 Regression] ICE: in eliminate_unnecessary_stmts, at tree-ssa-dce.c:1112 with -O -funsafe-math-optimizations -fno-tree-dominator-opts -fno-tree-reassoc
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: zsojka at seznam dot cz
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Changed-Fields:
Message-ID: <bug-46498-4@http.gcc.gnu.org/bugzilla/>
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
MIME-Version: 1.0
Date: Tue, 16 Nov 2010 15:03:00 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2010-11/txt/msg02062.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46498

           Summary: [4.5/4.6 Regression] ICE: in
                    eliminate_unnecessary_stmts, at tree-ssa-dce.c:1112
                    with -O -funsafe-math-optimizations
                    -fno-tree-dominator-opts -fno-tree-reassoc
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


----- testcase.c -----
void foo (double d) {}
----------------------

Compiler output:
$ gcc -O -funsafe-math-optimizations -fno-tree-dominator-opts -fno-tree-reassoc
testcase.c
testcase.c: In function 'foo':
testcase.c:1:6: internal compiler error: in eliminate_unnecessary_stmts, at
tree-ssa-dce.c:1181
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r166795 - crash
r153685 - crash
4.5 r166509 - crash
4.4 r166509 - OK