tools/memory-model/litmus-tests/LB+poonceonces.litmus

   1 C LB+poonceonces
   2
   3 (*
   4  * Result: Sometimes
   5  *
   6  * Can the counter-intuitive outcome for the load-buffering pattern
   7  * be prevented even with no explicit ordering?
   8  *)
   9
  10 {}
  11
  12 P0(int *x, int *y)
  13 {
  14         int r0;
  15
  16         r0 = READ_ONCE(*x);
  17         WRITE_ONCE(*y, 1);
  18 }
  19
  20 P1(int *x, int *y)
  21 {
  22         int r0;
  23
  24         r0 = READ_ONCE(*y);
  25         WRITE_ONCE(*x, 1);
  26 }
  27
  28 exists (0:r0=1 /\ 1:r0=1)