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[Bug tree-optimization/14847] [tree-ssa] combine "if (a & 1) goto there" and "if (a & 4) goto there"
- 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: 30 Apr 2008 15:07:05 -0000
- Subject: [Bug tree-optimization/14847] [tree-ssa] combine "if (a & 1) goto there" and "if (a & 4) goto there"
- References: <bug-14847-5009@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from rguenth at gcc dot gnu dot org 2008-04-30 15:07 -------
Subject: Bug 14847
Author: rguenth
Date: Wed Apr 30 15:06:16 2008
New Revision: 134825
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=134825
Log:
2008-04-30 Richard Guenther <rguenther@suse.de>
PR tree-optimization/14847
* tree-ssa-ifcombine.c (get_name_for_bit_test): New helper function.
(recognize_bits_test): Use it.
(recognize_single_bit_test): Likewise.
* gcc.dg/tree-ssa/ssa-ifcombine-6.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ifcombine-6.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-ifcombine.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14847