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[Bug tree-optimization/45578] [4.6 Regression] The polyhedron test mdbx is miscompiled with -O2 -ftree-vectorize at revision 163915
- 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: 8 Sep 2010 11:17:46 -0000
- Subject: [Bug tree-optimization/45578] [4.6 Regression] The polyhedron test mdbx is miscompiled with -O2 -ftree-vectorize at revision 163915
- References: <bug-45578-12313@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #7 from rguenth at gcc dot gnu dot org 2010-09-08 11:17 -------
Subject: Bug 45578
Author: rguenth
Date: Wed Sep 8 11:17:31 2010
New Revision: 163997
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=163997
Log:
2010-09-08 Richard Guenther <rguenther@suse.de>
PR tree-optimization/45578
* tree-ssa-loop-ivopts.c (rewrite_use_nonlinear_expr):
Be more careful when transfering alignment information to
the new induction variable.
(copy_ref_info): Likewise.
* gfortran.dg/pr45578.f90: New testcase.
Added:
trunk/gcc/testsuite/gfortran.dg/pr45578.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-loop-ivopts.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45578