From: marxin Date: Wed, 19 Jun 2019 07:24:02 +0000 (+0000) Subject: Add new micro-benchmark for string operations. X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fgcc.git;a=commitdiff_plain;h=a88314959a44712c257153d90f571f2f82726ff1 Add new micro-benchmark for string operations. 2019-06-19 Martin Liska * bench-stringop: New file. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@272469 138bc75d-0d04-0410-961f-82ee72b054a4 --- diff --git a/contrib/ChangeLog b/contrib/ChangeLog index 455d3f801460..56aaec909d09 100644 --- a/contrib/ChangeLog +++ b/contrib/ChangeLog @@ -1,3 +1,7 @@ +2019-06-19 Martin Liska + + * bench-stringop: New file. + 2019-05-21 Janne Blomqvist * mklog: Open files in text mode. diff --git a/contrib/bench-stringop b/contrib/bench-stringop new file mode 100755 index 000000000000..7af8bfd96a06 --- /dev/null +++ b/contrib/bench-stringop @@ -0,0 +1,158 @@ +#!/bin/bash + +# Script to measure memset and memcpy for different sizes and strategies. +# +# Contributed by Jan Hubicka +# +# Copyright (C) 2019 Free Software Foundation, Inc. +# +# This file is part of GCC. +# +# GCC is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3, or (at your option) +# any later version. +# +# GCC 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 General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GCC; see the file COPYING. If not, write to +# the Free Software Foundation, 51 Franklin Street, Fifth Floor, +# Boston, MA 02110-1301, USA. + +# This script will search a line starting with 'spawn' that includes the +# pattern you are looking for (typically a source file name). +# +# Once it finds that pattern, it re-executes the whole command +# in the spawn line. If the pattern matches more than one spawn +# command, it asks which one you want. + +test() +{ +rm -f a.out +cat <&1` +echo -n " "$TIME +echo $TIME $4 >>/tmp/accum +} + +test2() +{ +rm -f a.out +cat </dev/null - +#define BUFFER_SIZE (16*1024*1024 + AVG_SIZE*2) +/*#define MEMORY_COPIES (1024*1024*64*(long long)10)*/ +$type t[BUFFER_SIZE]; +int main() +{ + unsigned int i; + for (i=0;i<((long long)MEMORY_COPIES + AVG_SIZE * 2 - 1)/AVG_SIZE*2;i++) +#ifdef test_memset + __builtin_memset (t+(i*1024*1024+i*1)%(BUFFER_SIZE - AVG_SIZE*2), i, (AVG_SIZE + i) % (AVG_SIZE * 2 + 0)); +#else + __builtin_memcpy (t+(i*1024*1024+i*1)%(BUFFER_SIZE - AVG_SIZE*2), t+((i+1)*1024*1024*4+i*1)%(BUFFER_SIZE - AVG_SIZE *2), (AVG_SIZE + i) % (AVG_SIZE * 2 + 0)); +#endif + return 0; +} +END +TIME=`/usr/bin/time -f "%E" ./a.out 2>&1` +echo -n " "$TIME +echo $TIME $4 >>/tmp/accum +} + +testrow() +{ +echo -n "" >/tmp/accum +printf "%12i " $3 +test "$2" "$3" "-mstringop-strategy=libcall" libcall +test "$2" "$3" "-mstringop-strategy=rep_byte -malign-stringops" rep1 +test "$2" "$3" "-mstringop-strategy=rep_byte -mno-align-stringops" rep1noalign +test "$2" "$3" "-mstringop-strategy=rep_4byte -malign-stringops" rep4 +test "$2" "$3" "-mstringop-strategy=rep_4byte -mno-align-stringops" rep4noalign +if [ "$mode" == 64 ] +then +test "$2" "$3" "-mstringop-strategy=rep_8byte -malign-stringops" rep8 +test "$2" "$3" "-mstringop-strategy=rep_8byte -mno-align-stringops" rep8noalign +fi +test "$2" "$3" "-mstringop-strategy=loop -malign-stringops" loop +test "$2" "$3" "-mstringop-strategy=loop -mno-align-stringops" loopnoalign +test "$2" "$3" "-mstringop-strategy=unrolled_loop -malign-stringops" unrl +test "$2" "$3" "-mstringop-strategy=unrolled_loop -mno-align-stringops" unrlnoalign +test "$2" "$3" "-mstringop-strategy=vector_loop -malign-stringops" sse +test "$2" "$3" "-mstringop-strategy=vector_loop -mno-align-stringops -msse2" ssenoalign +#test2 "$2" "$3" "" +test "$2" "$3" "-mstringop-strategy=byte_loop" byte +best=`cat /tmp/accum | sort | head -1` +test "$2" "$3" " -fprofile-generate" >/dev/null 2>&1 +test "$2" "$3" " -fprofile-use" +test "$2" "$3" " -minline-stringops-dynamically" +echo " $best" +} + +test_all_sizes() +{ +if [ "$mode" == 64 ] +then +echo " block size libcall rep1 noalg rep4 noalg rep8 noalg loop noalg unrl noalg sse noalg byte PGO dynamic BEST" +else +echo " block size libcall rep1 noalg rep4 noalg loop noalg unrl noalg sse noalg byte PGO dynamic BEST" +fi +#for size in 1 2 3 4 6 8 10 12 14 16 24 32 48 64 128 256 512 1024 4096 8192 81920 819200 8192000 +#for size in 8192000 819200 81920 8192 4096 2048 1024 512 256 128 64 48 32 24 16 14 12 10 8 6 5 4 3 2 1 +for size in 8192000 819200 81920 20480 8192 4096 2048 1024 512 256 128 64 48 32 24 16 14 12 10 8 6 4 1 +#for size in 128 256 1024 4096 8192 81920 819200 +do +testrow "$1" "$2" $size +done +} + +mode=$1 +shift +export memsize=$1 +shift +cmdline=$* +if [ "$mode" != 32 ] +then + if [ "$mode" != 64 ] + then + echo "Usage:" + echo "test_stringop mode size cmdline" + echo "mode is either 32 or 64" + echo "size is amount of memory copied in each test. Should be chosed small enough so runtime is less than minute for each test and sorting works" + echo "Example: test_stringop 32 640000000 ./xgcc -B ./ -march=pentium3" + exit + fi +fi + +echo "memcpy" +export STRINGOP="" +type=char +test_all_sizes $mode "$cmdline -m$mode" +echo "Aligned" +type=long +test_all_sizes $mode "$cmdline -m$mode" +echo "memset" +export STRINGOP="-Dtest_memset=1" +type=char +test_all_sizes $mode "$cmdline -m$mode" +echo "Aligned" +type=long +test_all_sizes $mode "$cmdline -m$mode"