From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-254990-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 25333 invoked by alias); 25 Jun 2008 12:48:17 -0000
Received: (qmail 25108 invoked by uid 48); 25 Jun 2008 12:47:28 -0000
Date: Wed, 25 Jun 2008 12:48:00 -0000
Subject: [Bug tree-optimization/36630]  New: [4.3/4.4 Regression] ICE in vect_update_ivs_after_vectorizer
X-Bugzilla-Reason: CC
Message-ID: <bug-36630-87@http.gcc.gnu.org/bugzilla/>
Reply-To: gcc-bugzilla@gcc.gnu.org
To: gcc-bugs@gcc.gnu.org
From: "jakub at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
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: 2008-06/txt/msg01516.txt.bz2

void
foo (unsigned char *x, short y)
{
  short i;

  i = 2;
  while (i < y)
    {
      x[i - 1] = x[i];
      i = i + 1;
    }
}

ICEs at -O3 on x86_64-linux in 4.3/4.4, works in 4.2 with -O3 -ftree-vectorize.


-- 
           Summary: [4.3/4.4 Regression] ICE in
                    vect_update_ivs_after_vectorizer
           Product: gcc
           Version: 4.3.1
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jakub at gcc dot gnu dot org
GCC target triplet: x86_64-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36630