gcc/testsuite/gcc.c-torture/execute/pr81588.c

   1 /* PR tree-optimization/81588 */
   2
   3 __attribute__((noinline, noclone)) int
   4 bar (int x)
   5 {
   6   __asm volatile ("" : : "g" (x) : "memory");
   7 }
   8
   9 __attribute__((noinline, noclone)) int
  10 foo (unsigned x, long long y)
  11 {
  12   if (y < 0)
  13     return 0;
  14   if (y < (long long) (4 * x))
  15     {
  16       bar (y);
  17       return 1;
  18     }
  19   return 0;
  20 }
  21
  22 int
  23 main ()
  24 {
  25   volatile unsigned x = 10;
  26   volatile long long y = -10000;
  27   if (foo (x, y) != 0)
  28     __builtin_abort ();
  29   y = -1;
  30   if (foo (x, y) != 0)
  31     __builtin_abort ();
  32   y = 0;
  33   if (foo (x, y) != 1)
  34     __builtin_abort ();
  35   y = 39;
  36   if (foo (x, y) != 1)
  37     __builtin_abort ();
  38   y = 40;
  39   if (foo (x, y) != 0)
  40     __builtin_abort ();
  41   y = 10000;
  42   if (foo (x, y) != 0)
  43     __builtin_abort ();
  44   return 0;
  45 }