func valueSetIndex(v ref, i int, x ref)

// makeArgSlices makes two slices to hold JavaScript arg data.
// It can be paired with storeArgs to make-and-store JavaScript arg slices.
// However, the two functions are separated to ensure makeArgSlices is inlined
// which will prevent the slices from being heap allocated for small (<=16)
// numbers of args.
func makeArgSlices(size int) (argVals []Value, argRefs []ref) {

	// - makeValue new(ref)
	{0,  1},
	{2,  1},
	{15, 1},
	{16, 1},
	// For greater than 16 arguments, we expect 3 alloction:
	// - makeValue: new(ref)
	// - makeArgSlices: argVals = make([]Value, size)
	// - makeArgSlices: argRefs = make([]ref, size)
	{17, 3},
	{32, 3},
	{42, 3},
}

// TestCallAllocations ensures the correct allocation profile for Value.Call
func TestCallAllocations(t *testing.T) {