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| .. | ||
| add_n.asm | ||
| addmul_1.asm | ||
| addmul_2.asm | ||
| addmul_3.asm | ||
| addmul_4.asm | ||
| gmp-mparam.h | ||
| mul_1.asm | ||
| README | ||
| sub_n.asm | ||
| submul_1.asm | ||
Copyright 2002, 2005 Free Software Foundation, Inc. This file is part of the GNU MP Library. The GNU MP Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU MP Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU MP Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. This directory contains assembly code for nails-enabled 21264. The code is not very well optimized. For addmul_N, as N grows larger, we could make multiple loads together, then do about 3.3 i/c. 10 cycles after the last load, we can increase to 4 i/c. This would surely allow addmul_4 to run at 2 c/l, but the same should be possible also for addmul_3 and perhaps even addmul_2. current fair best Routine c/l unroll c/l unroll c/l i/c mul_1 3.25 2.75 2.75 3.273 addmul_1 4.0 4 3.5 4 14 3.25 3.385 addmul_2 4.0 1 2.5 2 10 2.25 3.333 addmul_3 3.0 1 2.33 2 14 2 3.333 addmul_4 2.5 1 2.125 2 17 2 3.135 addmul_5 2 1 10 addmul_6 2 1 12 addmul_7 2 1 14 (The "best" column doesn't account for bookkeeping instructions and thereby assumes infinite unrolling.) Basecase usages: 1 addmul_1 2 addmul_2 3 addmul_3 4 addmul_4 5 addmul_3 + addmul_2 2.3998 6 addmul_4 + addmul_2 7 addmul_4 + addmul_3