gcc/testsuite/c-c++-common/spec-barrier-2.c

   1 /* { dg-do run } */
   2 /* { dg-additional-options "-Wno-volatile" { target c++ } } */
   3
   4 /* Even on targets that don't need the optional failval parameter,
   5    side-effects on the operand should still be calculated.  */
   6
   7 int x = 3;
   8 volatile int y = 9;
   9
  10 int main ()
  11 {
  12   int z = __builtin_speculation_safe_value (x, y++);
  13   if (z != 3 || y != 10)
  14     __builtin_abort ();
  15   return 0;
  16 }
  17
  18 /* { dg-prune-output "this target does not define a speculation barrier;" } */