From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4377 invoked by alias); 22 Mar 2010 14:58:37 -0000 Received: (qmail 4333 invoked by alias); 22 Mar 2010 14:58:26 -0000 Date: Mon, 22 Mar 2010 14:58:00 -0000 Message-ID: <20100322145826.4332.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug middle-end/43419] gcc replaces pow(x, 0.5) by sqrt(x), invalid when x is -0 In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "jakub 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: 2010-03/txt/msg02162.txt.bz2 ------- Comment #8 from jakub at gcc dot gnu dot org 2010-03-22 14:58 ------- Subject: Bug 43419 Author: jakub Date: Mon Mar 22 14:58:00 2010 New Revision: 157631 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=157631 Log: Backport from mainline: 2010-03-18 Michael Matz PR middle-end/43419 * builtins.c (expand_builtin_pow): Don't transform pow(x, 0.5) into sqrt(x) if we need to preserve signed zeros. * gcc.dg/pr43419.c: New testcase. Added: branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/pr43419.c Modified: branches/gcc-4_4-branch/gcc/ChangeLog branches/gcc-4_4-branch/gcc/builtins.c branches/gcc-4_4-branch/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43419