From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5692 invoked by alias); 5 Jan 2010 10:47:18 -0000 Received: (qmail 5222 invoked by uid 48); 5 Jan 2010 10:47:07 -0000 Date: Tue, 05 Jan 2010 10:47:00 -0000 Message-ID: <20100105104707.5221.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug c/42596] Integer/Floating point vector casts generate XMM register moves from and to the same register In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "rguenth 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: 2010-01/txt/msg00491.txt.bz2 ------- Comment #5 from rguenth at gcc dot gnu dot org 2010-01-05 10:47 ------- Uh, of course. _Don't use global register variables_ They are not supposed to be used for this kind of things and nobody spends a single second to optimizing code generation for them - instead the most difficult thing is to prevent the compiler from miscompiling things. -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |WONTFIX http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42596