From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 18283 invoked by alias); 6 Feb 2004 07:50:05 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 18263 invoked by uid 48); 6 Feb 2004 07:50:02 -0000 Date: Fri, 06 Feb 2004 07:50:00 -0000 Message-ID: <20040206075002.18262.qmail@sources.redhat.com> From: "tjw at omnigroup dot com" To: gcc-bugs@gcc.gnu.org In-Reply-To: <20040206074537.14042.tjw@omnigroup.com> References: <20040206074537.14042.tjw@omnigroup.com> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug c++/14042] C++ abstraction penalty is high in simple Altivec cases X-Bugzilla-Reason: CC X-SW-Source: 2004-02/txt/msg00744.txt.bz2 List-Id: ------- Additional Comments From tjw at omnigroup dot com 2004-02-06 07:49 ------- I forgot to mention that the compile line was: $PREFIX/bin/g++ -mdynamic-no-pic -fno-exceptions -O3 -maltivec -fstrict-aliasing obj.cpp -S -o obj-34.s Also, I did try this with scalar instead of vector values and the extraneous load/stores are NOT present, so this does look to be related to Altivec somehow. -- What |Removed |Added ---------------------------------------------------------------------------- Summary|C++ abstraction penalty is |C++ abstraction penalty is |high in simple cases |high in simple Altivec cases http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14042