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[Bug tree-optimization/28187] [4.1/4.2 Regression] '-O2 -fwrapv' exhausts memory.
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Jul 2006 12:32:01 -0000
- Subject: [Bug tree-optimization/28187] [4.1/4.2 Regression] '-O2 -fwrapv' exhausts memory.
- References: <bug-28187-7667@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from rguenth at gcc dot gnu dot org 2006-07-07 12:32 -------
Subject: Bug 28187
Author: rguenth
Date: Fri Jul 7 12:31:29 2006
New Revision: 115255
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=115255
Log:
2006-07-07 Richard Guenther <rguenther@suse.de>
PR tree-optimization/28187
* tree-vrp.c (vrp_operand_equal_p): New function.
(vrp_bitmap_equal_p): Likewise.
(update_value_range): Use them to compare old and new
max and min values.
* gcc.dg/pr28187.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/pr28187.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28187