86 lines
2.1 KiB
C
86 lines
2.1 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_compare_exchange_n builtin for a short. */
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extern void abort(void);
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short v = 0;
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short expected = 0;
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short max = ~0;
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short desired = ~0;
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short zero = 0;
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#define STRONG 0
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#define WEAK 1
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main ()
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{
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if (!__atomic_compare_exchange_n (&v, &expected, max, STRONG , __ATOMIC_RELAXED, __ATOMIC_RELAXED))
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abort ();
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if (expected != 0)
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abort ();
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if (__atomic_compare_exchange_n (&v, &expected, 0, STRONG , __ATOMIC_ACQUIRE, __ATOMIC_RELAXED))
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abort ();
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if (expected != max)
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abort ();
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if (!__atomic_compare_exchange_n (&v, &expected, 0, STRONG , __ATOMIC_RELEASE, __ATOMIC_ACQUIRE))
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abort ();
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if (expected != max)
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abort ();
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if (v != 0)
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abort ();
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if (__atomic_compare_exchange_n (&v, &expected, desired, WEAK, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE))
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abort ();
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if (expected != 0)
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abort ();
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if (!__atomic_compare_exchange_n (&v, &expected, desired, STRONG , __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST))
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abort ();
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if (expected != 0)
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abort ();
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if (v != max)
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abort ();
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/* Now test the generic version. */
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v = 0;
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if (!__atomic_compare_exchange (&v, &expected, &max, STRONG, __ATOMIC_RELAXED, __ATOMIC_RELAXED))
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abort ();
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if (expected != 0)
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abort ();
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if (__atomic_compare_exchange (&v, &expected, &zero, STRONG , __ATOMIC_ACQUIRE, __ATOMIC_RELAXED))
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abort ();
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if (expected != max)
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abort ();
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if (!__atomic_compare_exchange (&v, &expected, &zero, STRONG , __ATOMIC_RELEASE, __ATOMIC_ACQUIRE))
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abort ();
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if (expected != max)
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abort ();
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if (v != 0)
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abort ();
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if (__atomic_compare_exchange (&v, &expected, &desired, WEAK, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE))
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abort ();
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if (expected != 0)
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abort ();
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if (!__atomic_compare_exchange (&v, &expected, &desired, STRONG , __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST))
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abort ();
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if (expected != 0)
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abort ();
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if (v != max)
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abort ();
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return 0;
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}
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