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

		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:
	FixSegment:
		for i := len(inst.Prefix) - 1; i >= 0; i-- {

	FIDIVR:          "FIDIVR",
	FILD:            "FILD",
	FIMUL:           "FIMUL",
	FINCSTP:         "FINCSTP",
	FIST:            "FIST",
	FISTP:           "FISTP",
	FISTTP:          "FISTTP",
	FISUB:           "FISUB",
	FISUBR:          "FISUBR",
	FLD:             "FLD",
	FLD1:            "FLD1",
	FLDCW:           "FLDCW",
	FLDENV:          "FLDENV",
	FLDL2E:          "FLDL2E",
	FLDL2T:          "FLDL2T",

	//TODO: FISTTPL (R11)                   // 41db0b
	//TODO: FISTTPLL (BX)                   // dd0b
	//TODO: FISTTPLL (R11)                  // 41dd0b
	//TODO: FISUB (BX)                      // de23
	//TODO: FISUB (R11)                     // 41de23
	//TODO: FISUBL (BX)                     // da23
	//TODO: FISUBL (R11)                    // 41da23
	//TODO: FISUBR (BX)                     // de2b