mid  [10]byte
	post [8]byte
}

//go:noinline
func t10copy_ssa(y, x *[10]byte) {
	*y = *x
}
func testCopy10(t *testing.T) {
	a := T10{[8]byte{201, 202, 203, 204, 205, 206, 207, 208}, [10]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, [8]byte{211, 212, 213, 214, 215, 216, 217, 218}}
	x := [10]byte{100, 101, 102, 103, 104, 105, 106, 107, 108, 109}
	t10copy_ssa(&a.mid, &x)