1 /* Test __atomic routines for existence and proper execution on 4 byte
2 values with each valid memory model. */
3 /* { dg-do run } */
4 /* { dg-require-effective-target sync_int_long } */
5
6 /* Test the execution of the __atomic_X builtin for an int. */
7
8 extern void abort(void);
9
10 int v, count, ret;
11
main()12 main ()
13 {
14 v = 0;
15 count = 0;
16
17 if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELAXED) != count++)
18 abort ();
19
20 if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQUIRE) != count++)
21 abort ();
22
23 if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELEASE) != count++)
24 abort ();
25
26 if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQ_REL) != count++)
27 abort ();
28
29 if (__atomic_exchange_n (&v, count + 1, __ATOMIC_SEQ_CST) != count++)
30 abort ();
31
32 /* Now test the generic version. */
33
34 count++;
35
36 __atomic_exchange (&v, &count, &ret, __ATOMIC_RELAXED);
37 if (ret != count - 1 || v != count)
38 abort ();
39 count++;
40
41 __atomic_exchange (&v, &count, &ret, __ATOMIC_ACQUIRE);
42 if (ret != count - 1 || v != count)
43 abort ();
44 count++;
45
46 __atomic_exchange (&v, &count, &ret, __ATOMIC_RELEASE);
47 if (ret != count - 1 || v != count)
48 abort ();
49 count++;
50
51 __atomic_exchange (&v, &count, &ret, __ATOMIC_ACQ_REL);
52 if (ret != count - 1 || v != count)
53 abort ();
54 count++;
55
56 __atomic_exchange (&v, &count, &ret, __ATOMIC_SEQ_CST);
57 if (ret != count - 1 || v != count)
58 abort ();
59 count++;
60
61 return 0;
62 }
63