4 stdcall_fn_4(1, 2, 3.0)
5 stdcall_fn_5(S { x: 1, y: 2 }, 16)
6 stdcall_fn_6(S { x: 10, y: 12 })
7 stdcall_fn_7(S2 { x: 15, y: 16 }, 3)
8 stdcall_fn_8(S3 { x: [1, 2, 3, 4, 5] }, S3 { x: [6, 7, 8, 9, 10] })
12 fastcall_fn_2(16, 3.5)
14 fastcall_fn_4(1, 2, 3.0)
15 fastcall_fn_6(S { x: 10, y: 12 })
16 fastcall_fn_8(S3 { x: [1, 2, 3, 4, 5] }, S3 { x: [6, 7, 8, 9, 10] })