63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/* Test __atomic routines for existence and proper execution on 2 byte
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values with each valid memory model. */
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/* { dg-do run } */
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/* { dg-require-effective-target sync_char_short } */
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/* Test the execution of the __atomic_X builtin for a short. */
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extern void abort(void);
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short v, count, ret;
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main ()
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{
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v = 0;
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count = 0;
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if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELAXED) != count++)
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abort ();
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if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQUIRE) != count++)
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abort ();
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if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELEASE) != count++)
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abort ();
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if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQ_REL) != count++)
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abort ();
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if (__atomic_exchange_n (&v, count + 1, __ATOMIC_SEQ_CST) != count++)
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abort ();
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/* Now test the generic version. */
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count++;
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__atomic_exchange (&v, &count, &ret, __ATOMIC_RELAXED);
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if (ret != count - 1 || v != count)
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abort ();
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count++;
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__atomic_exchange (&v, &count, &ret, __ATOMIC_ACQUIRE);
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if (ret != count - 1 || v != count)
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abort ();
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count++;
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__atomic_exchange (&v, &count, &ret, __ATOMIC_RELEASE);
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if (ret != count - 1 || v != count)
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abort ();
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count++;
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__atomic_exchange (&v, &count, &ret, __ATOMIC_ACQ_REL);
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if (ret != count - 1 || v != count)
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abort ();
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count++;
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__atomic_exchange (&v, &count, &ret, __ATOMIC_SEQ_CST);
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if (ret != count - 1 || v != count)
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abort ();
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count++;
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return 0;
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}
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