gcc/testsuite/gcc.target/aarch64/atomic_cmp_exchange_zero_strong_1.c


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/* { dg-do compile } */
/* { dg-options "-O2" } */

int
foo (int *a)
{
  int x = 0;
  return __atomic_compare_exchange_n (a, &x, 4, 0,
				      __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
}

/* { dg-final { scan-assembler-times "cbnz\\tw\[0-9\]+" 2 } } */