// arm64:"CLZW",-"MOVWU"
	ret += uint64(bits.LeadingZeros32(t1))

	// arm64:"REV16W",-"MOVWU"
	ret += uint64(((t1 & 0xff00ff00) >> 8) | ((t1 & 0x00ff00ff) << 8))

	// arm64:"EXTRW",-"MOVWU"
	ret += uint64((t1 << 25) | (t2 >> 7))

	return ret
}

// no sign extension when the upper bits of the result are zero

func noSignEXT(x int) int64 {
	t1 := int32(x)

	var ret int64