From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 25776 invoked by alias); 8 Feb 2007 17:01:28 -0000 Received: (qmail 25711 invoked by uid 48); 8 Feb 2007 17:01:13 -0000 Date: Thu, 08 Feb 2007 17:01:00 -0000 Message-ID: <20070208170113.25710.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/30735] 50% slow down due to mem-ssa merge In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "hjl at lucon 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: 2007-02/txt/msg00935.txt.bz2 ------- Comment #1 from hjl at lucon dot org 2007-02-08 17:01 ------- Created an attachment (id=13021) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13021&action=view) A testcase # /usr/gcc-good/bin/gfortran -v Using built-in specs. Target: i686-pc-linux-gnu Configured with: /net/gnu-13/export/gnu/src/gcc/gcc/configure --enable-clocale=gnu --with-system-zlib --with-demangler-in-ld --enable-shared --enable-threads=posix --enable-haifa --enable-checking=assert --prefix=/usr/gcc-4.3 --with-local-prefix=/usr/local Thread model: posix gcc version 4.3.0 20061211 (experimental) [trunk revision 119728] # /usr/gcc-4.3/bin/gfortran -v Using built-in specs. Target: i686-pc-linux-gnu Configured with: /net/gnu-13/export/gnu/src/gcc/gcc/configure --enable-clocale=gnu --with-system-zlib --enable-decimal-float=yes --with-demangler-in-ld --enable-shared --enable-threads=posix --enable-haifa --enable-checking=assert --prefix=/usr/gcc-4.3 --with-local-prefix=/usr/local Thread model: posix gcc version 4.3.0 20070206 (experimental) [trunk revision 121636] # make /usr/gcc-good/bin/gfortran -c -O2 -ffast-math -static -o old.o e_c3d.f /usr/gcc-4.3/bin/gfortran -O2 -ffast-math -static -c -o tr535.o tr535.f /usr/gcc-4.3/bin/gfortran -O2 -ffast-math -static -o old old.o tr535.o /usr/gcc-4.3/bin/gfortran -c -O2 -ffast-math -static -o new.o e_c3d.f /usr/gcc-4.3/bin/gfortran -O2 -ffast-math -static -o new new.o tr535.o time ./old 0.03user 0.00system 0:00.03elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+82minor)pagefaults 0swaps time ./new 0.10user 0.00system 0:00.10elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+83minor)pagefaults 0swaps -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30735