}
	fn := types.BasicTypeNames[param] + "to" + types.BasicTypeNames[result]
	return typecheck.Conv(mkcall(fn, types.Types[result], init, typecheck.Conv(n.X, types.Types[param])), n.Type())
}

// walkConvInterface walks an OCONVIFACE node.
func walkConvInterface(n *ir.ConvExpr, init *ir.Nodes) ir.Node {

	n.X = walkExpr(n.X, init)

	fromType := n.X.Type()
	toType := n.Type()
	if !fromType.IsInterface() && !ir.IsBlank(ir.CurFunc.Nname) {

		return walkDelete(init, n)

	case ir.OAS2DOTTYPE:
		n := n.(*ir.AssignListStmt)
		return walkAssignDotType(n, init)

	case ir.OCONVIFACE:
		n := n.(*ir.ConvExpr)
		return walkConvInterface(n, init)

	case ir.OCONV, ir.OCONVNOP:
		n := n.(*ir.ConvExpr)
		return walkConv(n, init)

	case ir.OSLICE2ARR:
		n := n.(*ir.ConvExpr)
		return walkSliceToArray(n, init)