}

func isFloat(op Op) bool {
	switch op {
	case FADD, FCOM, FCOMP, FDIV, FDIVR, FIADD, FICOM, FICOMP, FIDIV, FIDIVR, FILD, FIMUL, FIST, FISTP, FISTTP, FISUB, FISUBR, FLD, FMUL, FST, FSTP, FSUB, FSUBR:
		return true
	}
	return false
}

func isFloatInt(op Op) bool {
	switch op {
	case FIADD, FICOM, FICOMP, FIDIV, FIDIVR, FILD, FIMUL, FIST, FISTP, FISTTP, FISUB, FISUBR:
		return true
	}
	return false

			args = []string{"st0", "st1"}
		}

	case FST, FSTP, FISTTP, FIST, FISTP, FBSTP:
		if len(args) == 1 {
			args = append(args, "st0")
		}

	case FLD, FXCH, FCOM, FCOMP, FIADD, FIMUL, FICOM, FICOMP, FISUBR, FIDIV, FUCOM, FUCOMP, FILD, FBLD, FADD, FMUL, FSUB, FSUBR, FISUB, FDIV, FDIVR, FIDIVR:
		if len(args) == 1 {
			args = []string{"st0", args[0]}
		}

	case MASKMOVDQU, MASKMOVQ, XLATB, OUTSB, OUTSW, OUTSD:

	FDIVP:           "FDIVP",
	FDIVR:           "FDIVR",
	FDIVRP:          "FDIVRP",
	FFREE:           "FFREE",
	FFREEP:          "FFREEP",
	FIADD:           "FIADD",
	FICOM:           "FICOM",
	FICOMP:          "FICOMP",
	FIDIV:           "FIDIV",
	FIDIVR:          "FIDIVR",
	FILD:            "FILD",
	FIMUL:           "FIMUL",
	FINCSTP:         "FINCSTP",
	FIST:            "FIST",
	FISTP:           "FISTP",

	//TODO: FICOM (R11)                     // 41de13
	//TODO: FICOML (BX)                     // da13
	//TODO: FICOML (R11)                    // 41da13
	//TODO: FICOMP (BX)                     // de1b
	//TODO: FICOMP (R11)                    // 41de1b
	//TODO: FICOMPL (BX)                    // da1b
	//TODO: FICOMPL (R11)                   // 41da1b
	//TODO: FIDIV (BX)                      // de33