From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-190661-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 8221 invoked by alias); 5 Jul 2006 15:12:34 -0000
Received: (qmail 8169 invoked by uid 48); 5 Jul 2006 15:12:26 -0000
Date: Wed, 05 Jul 2006 15:12:00 -0000
Message-ID: <20060705151226.8168.qmail@sourceware.org>
X-Bugzilla-Reason: CC
References: <bug-28187-7667@http.gcc.gnu.org/bugzilla/>
Subject: [Bug tree-optimization/28187] [4.1/4.2 Regression] '-O2 -fwrapv' exhausts memory.
In-Reply-To: <bug-28187-7667@http.gcc.gnu.org/bugzilla/>
Reply-To: gcc-bugzilla@gcc.gnu.org
To: gcc-bugs@gcc.gnu.org
From: "rguenth 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-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: 2006-07/txt/msg00308.txt.bz2
List-Id: <gcc-bugs.sourceware.org>



------- Comment #5 from rguenth at gcc dot gnu dot org  2006-07-05 15:12 -------
Visiting statement:
window_6 = ASSERT_EXPR <window_1, window_1 < last_7>;

....

)
  (res = scev_not_known))
Found new range for window_6: [-INF, last_7 + -1]

Simulating statement (from ssa_edges): last_50 = ASSERT_EXPR <last_7, window_6
< last_7>;

Visiting statement:
last_50 = ASSERT_EXPR <last_7, window_6 < last_7>;

....

  (res = last_7))
Found new range for last_50: [window_6 + 1, +INF]




and over and over and over.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28187