{name: "Xor16", argLength: 2, commutative: true},
	{name: "Xor32", argLength: 2, commutative: true},
	{name: "Xor64", argLength: 2, commutative: true},

	// For shifts, AxB means the shifted value has A bits and the shift amount has B bits.
	// Shift amounts are considered unsigned.
	// If arg1 is known to be nonnegative and less than the number of bits in arg0,
	// then auxInt may be set to 1.

	// Unused portions of AuxInt are filled by sign-extending the used portion,
	// even if the represented value is unsigned.
	// Users of AuxInt which interpret AuxInt as unsigned (e.g. shifts) must be careful.
	// Use Value.AuxUnsigned to get the zero-extended value of AuxInt.
	AuxInt int64
	Aux    Aux

	// Arguments of this value
	Args []*Value

	// Containing basic block
	Block *Block

// trailing 0 bits. x.mant is normalized if the msb of x.mant == 1 (i.e.,
// the msb is shifted all the way "to the left"). Thus, if the mantissa has
// trailing 0 bits or x.prec is not a multiple of the Word size _W,
// x.mant[0] has trailing zero bits. The msb of the mantissa corresponds
// to the value 0.5; the exponent x.exp shifts the binary point as needed.
//
// A zero or non-finite Float x ignores x.mant and x.exp.
//

(Not    x) => (XOR (MOVDconst [1]) x)

// shifts
// hardware instruction uses only the low 6 bits of the shift
// we compare to 64 to ensure Go semantics for large shifts
// Rules about rotates with non-const shift are based on the following rules,
// if the following rules change, please also modify the rules based on them.

// check shiftIsBounded first, if shift value is proved to be valid then we
// can do the shift directly.

	if err != nil {
		log.Fatal(err)
	}
	err = os.WriteFile(*filename, data, 0644)
	if err != nil {
		log.Fatal(err)
	}
}

type Data struct {
	a, b, c, d string
	Shift1     []int
	Shift2     []int
	Shift3     []int
	Shift4     []int
	Table1     []uint32
	Table2     []uint32
	Table3     []uint32
	Table4     []uint32
}

var funcs = template.FuncMap{
	"dup":     dup,
	"relabel": relabel,

			}
		case lex.LSH:
			p.next()
			shift := p.factor()
			if int64(shift) < 0 {
				p.errorf("negative left shift count")
			}
			return value << shift
		case lex.RSH:
			p.next()
			shift := p.term()
			if int64(shift) < 0 {
				p.errorf("negative right shift count")
			}
			if int64(value) < 0 {
				p.errorf("right shift of value with high bit set")
			}
			value >>= shift

			//    floating-point numbers if possible,
			// 2) if one of them is not constant (possible because
			//    it contains a shift that is yet untyped), convert
			//    both of them to float64 since they must have the
			//    same type to succeed (this will result in an error
			//    because shifts of floats are not permitted)
			if x.mode == constant_ && y.mode == constant_ {
				toFloat := func(x *operand) {

			//    floating-point numbers if possible,
			// 2) if one of them is not constant (possible because
			//    it contains a shift that is yet untyped), convert
			//    both of them to float64 since they must have the
			//    same type to succeed (this will result in an error
			//    because shifts of floats are not permitted)
			if x.mode == constant_ && y.mode == constant_ {
				toFloat := func(x *operand) {

	// vIn is treated as a read-only input (it may be in use by another
	// goroutine), so we must make a copy.
	// uIn is copied to u.
	shift := nlz(vIn[n-1])
	vp := getNat(n)
	v := *vp
	shlVU(v, vIn, shift)
	u = u.make(len(uIn) + 1)
	u[len(uIn)] = shlVU(u[0:len(uIn)], uIn, shift)

	// The caller should not pass aliased z and u, since those are
	// the two different outputs, but correct just in case.
	if alias(z, u) {

		// shifts
		{name: "SLL", argLength: 2, reg: gp21, asm: "LSL"},                        // arg0 << arg1, shift amount is mod 64
		{name: "SLLconst", argLength: 1, reg: gp11, asm: "LSL", aux: "Int64"},     // arg0 << auxInt, auxInt should be in the range 0 to 63.
		{name: "SRL", argLength: 2, reg: gp21, asm: "LSR"},                        // arg0 >> arg1, unsigned, shift amount is mod 64