}
		p := opregreg(s, v.Op.Asm(), r, r2)
		if r != r1 {
			p.Reg = r1
		}
	case ssa.OpS390XRXSBG:
		r2 := v.Args[1].Reg()
		i := v.Aux.(s390x.RotateParams)
		p := s.Prog(v.Op.Asm())
		p.From = obj.Addr{Type: obj.TYPE_CONST, Offset: int64(i.Start)}
		p.AddRestSourceArgs([]obj.Addr{
			{Type: obj.TYPE_CONST, Offset: int64(i.End)},

				if _, ok := v.Aux.(s390x.CCMask); !ok {
					f.Fatalf("bad type %T for S390XCCMask in %v", v.Aux, v)
				}
				canHaveAux = true
			case auxS390XRotateParams:
				if _, ok := v.Aux.(s390x.RotateParams); !ok {
					f.Fatalf("bad type %T for S390XRotateParams in %v", v.Aux, v)
				}
				canHaveAux = true
			case auxFlagConstant:
				if v.AuxInt < 0 || v.AuxInt > 15 {

		return "Sym"
	case "Typ":
		return "*types.Type"
	case "TypSize":
		return "*types.Type"
	case "S390XCCMask":
		return "s390x.CCMask"
	case "S390XRotateParams":
		return "s390x.RotateParams"
	default:
		return "invalid"
	}
}

// auxIntType returns the Go type that this operation should store in its auxInt field.
func (op opData) auxIntType() string {
	switch op.aux {