addr := dt.RType.(*ir.AddrExpr)
					if addr.X.Op() == ir.OLINKSYMOFFSET {
						n1 = ir.TypeNode(n1.Type())
					}
				}
				if dt.ITab != nil && dt.ITab.Op() == ir.OADDR {
					addr := dt.ITab.(*ir.AddrExpr)
					if addr.X.Op() == ir.OLINKSYMOFFSET {
						n1 = ir.TypeNode(n1.Type())
					}
				}
			}
			cases = append(cases, oneCase{
				pos: ncase.Pos(),
				typ: n1,

	}

	if !types.IsMethodApplicable(recv, m) {
		base.FatalfAt(pos, "invalid method expression %v.%v (needs pointer receiver)", recv, sym)
	}

	n := ir.NewSelectorExpr(pos, ir.OMETHEXPR, ir.TypeNode(recv), sym)
	n.Selection = m
	n.SetType(NewMethodType(m.Type, recv))
	n.SetTypecheck(1)
	return n
}

func derefall(t *types.Type) *types.Type {
	for t != nil && t.IsPtr() {
		t = t.Elem()
	}