What does this Assembly snippet output?

1.global _main
2.align 2
3_main:
4    stp x29, x30, [sp, #-48]!
5    stp x19, x20, [sp, #16]
6    adrp x19, arr@PAGE
7    add x19, x19, arr@PAGEOFF
8    add x19, x19, #8
9    ldr w8, [x19], #-4
10    ldr w9, [x19]
11    add w8, w8, w9
12    sub sp, sp, #16
13    str x8, [sp]
14    adrp x0, fmt@PAGE
15    add x0, x0, fmt@PAGEOFF
16    bl _printf
17    add sp, sp, #16
18    ldp x19, x20, [sp, #16]
19    ldp x29, x30, [sp], #48
20    mov w0, #0
21    ret
22.section __DATA,__data
23.align 2
24arr: .long 10, 20, 30, 40
25.section __TEXT,__cstring
26fmt: .asciz "%d\n"