}
	}

	// dst and src have same underlying type.
	if haveIdenticalUnderlyingType(dst, src, false) {
		return cvtDirect
	}

	// dst and src are non-defined pointer types with same underlying base type.
	if dst.Kind() == abi.Pointer && nameFor(dst) == "" &&
		src.Kind() == abi.Pointer && nameFor(src) == "" &&
		haveIdenticalUnderlyingType(elem(dst), elem(src), false) {
		return cvtDirect
	}