status-go/vendor/lukechampine.com/blake3/cpu_darwin.go

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package blake3
import (
"syscall"
"github.com/klauspost/cpuid/v2"
)
var (
haveAVX2 bool
haveAVX512 bool
)
func init() {
haveAVX2 = cpuid.CPU.Supports(cpuid.AVX2)
haveAVX512 = cpuid.CPU.Supports(cpuid.AVX512F)
if !haveAVX512 {
// On some Macs, AVX512 detection is buggy, so fallback to sysctl
b, _ := syscall.Sysctl("hw.optional.avx512f")
haveAVX512 = len(b) > 0 && b[0] == 1
}
}