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/* Test __atomic routines for existence and proper execution on 2 byte 
   values with each valid memory model.  */
/* { dg-do run } */
/* { dg-require-effective-target sync_char_short } */
 
/* Test the execution of the __atomic_compare_exchange_n builtin for a short.  */
 
extern void abort(void);
 
short v = 0;
short expected = 0;
short max = ~0;
short desired = ~0;
short zero = 0;
 
#define STRONG 0
#define WEAK 1
 
main ()
{
 
  if (!__atomic_compare_exchange_n (&v, &expected, max, STRONG , __ATOMIC_RELAXED, __ATOMIC_RELAXED)) 
    abort ();
  if (expected != 0)
    abort ();
 
  if (__atomic_compare_exchange_n (&v, &expected, 0, STRONG , __ATOMIC_ACQUIRE, __ATOMIC_RELAXED)) 
    abort ();
  if (expected != max)
    abort ();
 
  if (!__atomic_compare_exchange_n (&v, &expected, 0, STRONG , __ATOMIC_RELEASE, __ATOMIC_ACQUIRE)) 
    abort ();
  if (expected != max)
    abort ();
  if (v != 0)
    abort ();
 
  if (__atomic_compare_exchange_n (&v, &expected, desired, WEAK, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE)) 
    abort ();
  if (expected != 0)
    abort ();
 
  if (!__atomic_compare_exchange_n (&v, &expected, desired, STRONG , __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)) 
    abort ();
  if (expected != 0)
    abort ();
  if (v != max)
    abort ();
 
  /* Now test the generic version.  */
 
  v = 0;
 
  if (!__atomic_compare_exchange (&v, &expected, &max, STRONG, __ATOMIC_RELAXED, __ATOMIC_RELAXED))
    abort ();
  if (expected != 0)
    abort ();
 
  if (__atomic_compare_exchange (&v, &expected, &zero, STRONG , __ATOMIC_ACQUIRE, __ATOMIC_RELAXED)) 
    abort ();
  if (expected != max)
    abort ();
 
  if (!__atomic_compare_exchange (&v, &expected, &zero, STRONG , __ATOMIC_RELEASE, __ATOMIC_ACQUIRE)) 
    abort ();
  if (expected != max)
    abort ();
  if (v != 0)
    abort ();
 
  if (__atomic_compare_exchange (&v, &expected, &desired, WEAK, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE)) 
    abort ();
  if (expected != 0)
    abort ();
 
  if (!__atomic_compare_exchange (&v, &expected, &desired, STRONG , __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)) 
    abort ();
  if (expected != 0)
    abort ();
  if (v != max)
    abort ();
 
  return 0;
}