gcc/testsuite/gcc.target/arm/sync-1.c

   1
   2 /* { dg-do run { target sync_int_long } } */
   3 /* { dg-options "-O2" } */
   4
   5 volatile int mem;
   6
   7 int
   8 bar (int x, int y)
   9 {
  10   if (x)
  11     __sync_fetch_and_add(&mem, y);
  12   return 0;
  13 }
  14
  15 extern void abort (void);
  16
  17 int
  18 main (int argc, char *argv[])
  19 {
  20   mem = 0;
  21   bar (0, 1);
  22   bar (1, 1);
  23   if (mem != 1)
  24     abort ();
  25   return 0;
  26 }