clash/check_amd64.sh
2022-04-28 14:18:54 +08:00

28 lines
No EOL
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#!/bin/sh
flags=$(grep '^flags\b' </proc/cpuinfo | head -n 1)
flags=" ${flags#*:} "
has_flags () {
for flag; do
case "$flags" in
*" $flag "*) :;;
*) return 1;;
esac
done
}
determine_level () {
level=0
has_flags lm cmov cx8 fpu fxsr mmx syscall sse2 || return 0
level=1
has_flags cx16 lahf_lm popcnt sse4_1 sse4_2 ssse3 || return 0
level=2
has_flags avx avx2 bmi1 bmi2 f16c fma abm movbe xsave || return 0
level=3
has_flags avx512f avx512bw avx512cd avx512dq avx512vl || return 0
level=4
}
determine_level
echo "Your CPU supports amd64-v$level"
return $level