gcc/testsuite/gcc.dg/tree-ssa/loop-bound-6.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-ivopts-details" } */
   3
   4 int *a;
   5
   6 int
   7 foo (signed char s)
   8 {
   9   signed char i;
  10   int sum = 0;
  11
  12   for (i = s; i > 0; i--)
  13     {
  14       sum += a[i];
  15     }
  16
  17   return sum;
  18 }
  19
  20 /* Check loop niter bound information.  */
  21 /* { dg-final { scan-tree-dump "bounded by 126" "ivopts" } } */
  22 /* { dg-final { scan-tree-dump-not "bounded by 127" "ivopts" } } */
  23 /* { dg-final { scan-tree-dump-not "zero if " "ivopts" } } */