From: Murat Koc (murat.koc@frontsite.com.tr)
Date: Wed 18 Feb 2004 - 11:41:16 EST
On Wed, 2004-02-04 at 13:07, Volkan YAZICI wrote:
> merhaba,
>
Selam,
> herhangi bir program derlerken, madem programi paketi ile kurmayip kendim derliyorum, o zaman optimizasyonunu da kitabina gore yapalim ki bir ise yarasin diye dusundum.
Elimdeki ufak bir script i paste edeceğim. İşinize yarayabilir.
------------------------------------------------------------------------
#!/bin/sh
# Author: pixelbeat
#This script is Linux specific
#It should work on any gcc >= 2.95 at least
#these apply to any arch (just here for reference)
unsafe_math_opts="-ffast-math -fno-math-errno -funsafe-math-optimizations -fno-trapping-math"
gcc_version=`gcc -dumpversion | sed 's/\([0-9]\{1,\}\.[0-9]\{1,\}\)\.*\([0-9]\{1,\}\)\{0,1\}/\1\2/'`
IFS=":"
while read name value; do
unset IFS
name=`echo $name`
value=`echo $value`
IFS=":"
if [ "$name" == "vendor_id" ]; then
vendor_id="$value"
elif [ "$name" == "cpu family" ]; then
cpu_family="$value"
elif [ "$name" == "model" ]; then
cpu_model="$value"
elif [ "$name" == "flags" ]; then
flags="$value"
fi
done < /proc/cpuinfo
unset IFS
if [ "$vendor_id" == "AuthenticAMD" ]; then
if [ "$cpu_family" == "4" ]; then
_CFLAGS="$_CFLAGS -march=i486"
elif [ "$cpu_family" == "5" ]; then
if [ "$cpu_model" -lt "4" ]; then
_CFLAGS="$_CFLAGS -march=pentium"
elif [ "$cpu_model" == "6" ] || [ "$cpu_model" == "7" ]; then
_CFLAGS="$_CFLAGS -march=k6"
elif [ "$cpu_model" == "8" ] || [ "$cpu_model" == "12" ]; then
if expr $gcc_version '>=' 3.1 >/dev/null; then
_CFLAGS="$_CFLAGS -march=k6-2"
else
_CFLAGS="$_CFLAGS -march=k6"
fi
elif [ "$cpu_model" == "9" ] || [ "$cpu_model" == "13" ]; then
if expr $gcc_version '>=' 3.1 >/dev/null; then
_CFLAGS="$_CFLAGS -march=k6-3"
else
_CFLAGS="$_CFLAGS -march=k6"
fi
fi
elif [ "$cpu_family" == "6" ]; then
if [ "$cpu_model" -le "3" ]; then
if expr $gcc_version '>=' 3.0 >/dev/null; then
_CFLAGS="$_CFLAGS -march=athlon"
else
_CFLAGS="$_CFLAGS -march=k6"
fi
elif [ "$cpu_model" == "4" ]; then
if expr $gcc_version '>=' 3.1 >/dev/null; then
_CFLAGS="$_CFLAGS -march=athlon-tbird"
elif expr $gcc_version '>=' 3.0 >/dev/null; then
_CFLAGS="$_CFLAGS -march=athlon"
else
_CFLAGS="$_CFLAGS -march=k6"
fi
elif [ "$cpu_model" -ge "6" ]; then #athlon-{4,xp,mp}
if expr $gcc_version '>=' 3.1 >/dev/null; then
_CFLAGS="$_CFLAGS -march=athlon-xp"
elif expr $gcc_version '>=' 3.0 >/dev/null; then
_CFLAGS="$_CFLAGS -march=athlon"
else
_CFLAGS="$_CFLAGS -march=k6"
fi
fi
fi
else #everything else "GenuineIntel"
if [ "$cpu_family" == "3" ]; then
_CFLAGS="$_CFLAGS -march=i386"
elif [ "$cpu_family" == "4" ]; then
_CFLAGS="$_CFLAGS -march=i486"
elif [ "$cpu_family" == "5" ] && expr $gcc_version '<' 3.1 >/dev/null; then
_CFLAGS="$_CFLAGS -march=pentium"
elif [ "$cpu_family" -ge "6" ] && expr $gcc_version '<' 3.1 >/dev/null; then
_CFLAGS="$_CFLAGS -march=pentiumpro"
elif [ "$cpu_family" == "5" ]; then
if [ "$cpu_model" != "4" ]; then
_CFLAGS="$_CFLAGS -march=pentium"
else
_CFLAGS="$_CFLAGS -march=pentium-mmx" #No overlap with other vendors
fi
elif [ "$cpu_family" == "6" ]; then
if echo "$flags" | grep -vq cmov; then #gcc incorrectly assumes i686 always has cmov
_CFLAGS="$_CFLAGS -march=pentium -mcpu=pentiumpro" #VIA CPUs exhibit this
else
if [ "$cpu_model" == "0" ] || [ "$cpu_model" == "1" ]; then
_CFLAGS="$_CFLAGS -march=pentiumpro"
elif [ "$cpu_model" -ge "3" ] && [ "$cpu_model" -le "6" ]; then #4=TM5600 at least
_CFLAGS="$_CFLAGS -march=pentium2"
elif [ "$cpu_model" -ge "7" ] && [ "$cpu_model" -le "11" ]; then #9 invalid
_CFLAGS="$_CFLAGS -march=pentium3"
fi
fi
elif [ "$cpu_family" == "15" ]; then
_CFLAGS="$_CFLAGS -march=pentium4"
fi
fi
if expr $gcc_version '>=' 3.1 >/dev/null; then
if echo "$flags" | grep -q sse2; then
_CFLAGS="$_CFLAGS -mfpmath=sse -msse2"
elif echo "$flags" | grep -q sse; then
_CFLAGS="$_CFLAGS -mfpmath=sse -msse"
fi
if echo "$flags" | grep -q mmx; then
_CFLAGS="$_CFLAGS -mmmx"
fi
if echo "$flags" | grep -q 3dnow; then
_CFLAGS="$_CFLAGS -m3dnow"
fi
fi
echo "$_CFLAGS"
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-- __________ | | | | Murat Koc | | Manager & IT Consultant | FRONT | |==========| FrontSITE Bilgi Teknolojisi A.S. |_____SITE_| http://www.frontsite.com.tr/ -- Attached file included as plaintext by Ecartis -- -- File: signature.asc -- Desc: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQBAM5WryHJSQxPy7GoRAvJgAJ9L/LxUSv01F6xjEEVeVhoXFtWdsgCfTVko AOutrujfz/sXrus/YQspjtI= =ZNcU -----END PGP SIGNATURE-----