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111
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1 /* Test __atomic routines for existence and proper execution on 4 byte
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2 values with each valid memory model. */
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3 /* { dg-do run } */
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4 /* { dg-require-effective-target sync_int_long } */
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5
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6 /* Test the execution of the __atomic_X builtin for an int. */
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7
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8 extern void abort(void);
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9
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10 int v, count, ret;
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11
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12 int
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13 main ()
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14 {
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15 v = 0;
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16 count = 0;
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17
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18 if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELAXED) != count)
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19 abort ();
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20 count++;
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21
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22 if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQUIRE) != count)
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23 abort ();
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24 count++;
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25
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26 if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELEASE) != count)
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27 abort ();
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28 count++;
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29
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30 if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQ_REL) != count)
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31 abort ();
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32 count++;
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33
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34 if (__atomic_exchange_n (&v, count + 1, __ATOMIC_SEQ_CST) != count)
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35 abort ();
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36 count++;
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37
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38 /* Now test the generic version. */
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39
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40 count++;
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41
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42 __atomic_exchange (&v, &count, &ret, __ATOMIC_RELAXED);
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43 if (ret != count - 1 || v != count)
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44 abort ();
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45 count++;
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46
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47 __atomic_exchange (&v, &count, &ret, __ATOMIC_ACQUIRE);
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48 if (ret != count - 1 || v != count)
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49 abort ();
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50 count++;
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51
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52 __atomic_exchange (&v, &count, &ret, __ATOMIC_RELEASE);
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53 if (ret != count - 1 || v != count)
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54 abort ();
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55 count++;
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56
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57 __atomic_exchange (&v, &count, &ret, __ATOMIC_ACQ_REL);
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58 if (ret != count - 1 || v != count)
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59 abort ();
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60 count++;
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61
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62 __atomic_exchange (&v, &count, &ret, __ATOMIC_SEQ_CST);
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63 if (ret != count - 1 || v != count)
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64 abort ();
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65 count++;
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66
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67 return 0;
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68 }
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