gcc/testsuite/gcc.c-torture/execute/pr59358.c

   1 /* PR tree-optimization/59358 */
   2
   3 __attribute__((noinline, noclone)) int
   4 foo (int *x, int y)
   5 {
   6   int z = *x;
   7   if (y > z && y <= 16)
   8     while (y > z)
   9       z *= 2;
  10   return z;
  11 }
  12
  13 int
  14 main ()
  15 {
  16   int i;
  17   for (i = 1; i < 17; i++)
  18     {
  19       int j = foo (&i, 16);
  20       int k;
  21       if (i >= 8 && i <= 15)
  22         k = 16 + (i - 8) * 2;
  23       else if (i >= 4 && i <= 7)
  24         k = 16 + (i - 4) * 4;
  25       else if (i == 3)
  26         k = 24;
  27       else
  28         k = 16;
  29       if (j != k)
  30         __builtin_abort ();
  31       j = foo (&i, 7);
  32       if (i >= 7)
  33         k = i;
  34       else if (i >= 4)
  35         k = 8 + (i - 4) * 2;
  36       else if (i == 3)
  37         k = 12;
  38       else
  39         k = 8;
  40       if (j != k)
  41         __builtin_abort ();
  42     }
  43   return 0;
  44 }