(RotateLeft32 <t> x (MOVVconst [c])) => (Or32 (Lsh32x64 <t> x (MOVVconst [c&31])) (Rsh32Ux64 <t> x (MOVVconst [-c&31])))
(RotateLeft64 <t> x (MOVVconst [c])) => (Or64 (Lsh64x64 <t> x (MOVVconst [c&63])) (Rsh64Ux64 <t> x (MOVVconst [-c&63])))

// unary ops
(Neg(64|32|16|8) ...) => (NEGV ...)
(Neg(32|64)F ...) => (NEG(F|D) ...)

(Com(64|32|16|8) x) => (NOR (MOVVconst [0]) x)

	{name: "And64", argLength: 2, commutative: true},

	{name: "Or8", argLength: 2, commutative: true}, // arg0 | arg1
	{name: "Or16", argLength: 2, commutative: true},
	{name: "Or32", argLength: 2, commutative: true},
	{name: "Or64", argLength: 2, commutative: true},

	{name: "Xor8", argLength: 2, commutative: true}, // arg0 ^ arg1
	{name: "Xor16", argLength: 2, commutative: true},
	{name: "Xor32", argLength: 2, commutative: true},

			// hex
			i++
			j := i
			for j < len(s) && isHexDigit(s[j]) {
				j++
			}
			if j-i < 1 || j-i > 6 || j >= len(s) || s[j] != ';' {
				return nil, 0, 0, false
			}
			r64, _ := strconv.ParseInt(s[i:j], 16, 0)
			r = int(r64)
			end = j + 1
		} else {
			// decimal
			j := i
			for j < len(s) && isDigit(s[j]) {
				j++
			}
			if j-i < 1 || j-i > 7 || j >= len(s) || s[j] != ';' {