https://bugs.libre-soc.org/show_bug.cgi?id=672
func count8safe(counts *[8]int, buf []uint8) {
for i := range buf {
for j := 0; j < 8; j++ {
counts[j] += int(buf[i] >> j & 1)
}
}
}
func count16safe(counts *[16]int, buf []uint16) {
for i := range buf {
for j := 0; j < 16; j++ {
counts[j] += int(buf[i] >> j & 1)
}
}
}