// match: (Ctz16NonZero x)
	// cond: buildcfg.GOAMD64 >= 3
	// result: (TZCNTL x)
	for {
		x := v_0
		if !(buildcfg.GOAMD64 >= 3) {
			break
		}
		v.reset(OpAMD64TZCNTL)
		v.AddArg(x)
		return true
	}
	// match: (Ctz16NonZero x)
	// cond: buildcfg.GOAMD64 < 3
	// result: (BSFL x)
	for {
		x := v_0
		if !(buildcfg.GOAMD64 < 3) {
			break
		}