func isADDop(op obj.As) bool {
	switch op {
	case AADD, AADDS, ASUB, ASUBS, ACMN, ACMP:
		return true
	}
	return false
}

func isADDWop(op obj.As) bool {
	switch op {
	case AADDW, AADDSW, ASUBW, ASUBSW, ACMNW, ACMPW:
		return true
	}
	return false
}

func isADDSop(op obj.As) bool {
	switch op {
	case AADDS, AADDSW, ASUBS, ASUBSW:
		return true
	}
	return false
}

			opset(ARISBHG, r)
			opset(ARISBLG, r)
			opset(ARISBHGZ, r)
			opset(ARISBLGZ, r)
		case ACSG:
			opset(ACS, r)
		case ASUB:
			opset(ASUBC, r)
			opset(ASUBE, r)
			opset(ASUBW, r)
		case ANEG:
			opset(ANEGW, r)
		case AFMOVD:
			opset(AFMOVS, r)
		case AMOVDBR:
			opset(AMOVWBR, r)
		case ACMP:
			opset(ACMPW, r)
		case ACMPU:
			opset(ACMPWU, r)

	{ASUBPD, yxm, Pe, opBytes{0x5c}},
	{ASUBPS, yxm, Pm, opBytes{0x5c}},
	{ASUBQ, yaddl, Pw, opBytes{0x83, 05, 0x2d, 0x81, 05, 0x29, 0x2b}},
	{ASUBSD, yxm, Pf2, opBytes{0x5c}},
	{ASUBSS, yxm, Pf3, opBytes{0x5c}},
	{ASUBW, yaddl, Pe, opBytes{0x83, 05, 0x2d, 0x81, 05, 0x29, 0x2b}},
	{ASWAPGS, ynone, Pm, opBytes{0x01, 0xf8}},
	{ASYSCALL, ynone, Px, opBytes{0x0f, 0x05}}, // fast syscall
	{ATESTB, yxorb, Pb, opBytes{0xa8, 0xf6, 00, 0x84, 0x84}},