gcc/testsuite/gcc.dg/pr86314.c

   1 // PR target/86314
   2 // { dg-do run { target sync_int_long_stack } }
   3 // { dg-options "-O2" }
   4
   5 __attribute__((noinline, noclone)) unsigned long
   6 foo (unsigned long *p)
   7 {
   8   unsigned long m = 1UL << ((*p & 1) ? 1 : 0);
   9   unsigned long n = __atomic_fetch_or (p, m, __ATOMIC_SEQ_CST);
  10   return (n & m) == 0;
  11 }
  12
  13 int
  14 main ()
  15 {
  16   unsigned long v = 1;
  17   if (foo (&v) != 1)
  18     __builtin_abort ();
  19   return 0;
  20 }