gcc/testsuite/gcc.dg/pr85529.c

   1 /* PR tree-optimization/85529 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2 -fno-ssa-phiopt" } */
   4
   5 __attribute__((noinline, noclone)) int
   6 foo (int x)
   7 {
   8   x &= 31;
   9   x -= 25;
  10   x *= 2;
  11   if (x < 0)
  12     return 1;
  13   int y = x >> 2;
  14   if (x >= y)
  15     return 1;
  16   return 0;
  17 }
  18
  19 int
  20 main ()
  21 {
  22   int i;
  23   for (i = 0; i < 63; i++)
  24     if (foo (i) != 1)
  25       __builtin_abort ();
  26   return 0;
  27 }