From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26044 invoked by alias); 8 Apr 2010 08:21:02 -0000 Received: (qmail 25948 invoked by alias); 8 Apr 2010 08:20:52 -0000 Date: Thu, 08 Apr 2010 08:21:00 -0000 Message-ID: <20100408082052.25947.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug middle-end/40815] redundant neg instruction caused by loop-invariant In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "mkuvyrkov at gcc dot gnu dot org" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2010-04/txt/msg00721.txt.bz2 ------- Comment #10 from mkuvyrkov at gcc dot gnu dot org 2010-04-08 08:20 ------- Subject: Bug 40815 Author: mkuvyrkov Date: Thu Apr 8 08:20:36 2010 New Revision: 158105 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=158105 Log: PR middle-end/40815 * tree-ssa-reassoc.c (broken_up_substracts): Rename to plus_negates. (negate_value): Move code to push elements to broken_up_substracts ... (eliminate_plus_minus_pair): ... here. Push operands that have no negative pair to plus_negates. (repropagate_negates, init_reassoc, fini_reassoc): Update. PR middle-end/40815 * gcc.dg/tree-ssa/reassoc-19.c: New. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/reassoc-19.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-reassoc.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40815