stksize := params.ArgWidth() // includes receiver, args, and results

	res := n.Fun.Type().Results()
	if k == callNormal || k == callTail {
		for _, p := range params.OutParams() {
			ACResults = append(ACResults, p.Type)
		}
	}

	var call *ssa.Value
	if k == callDeferStack {
		if stksize != 0 {
			s.Fatalf("deferprocStack with non-zero stack size %d: %v", stksize, n)
		}