gcc/testsuite/gcc.dg/tree-ssa/scev-6.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 int main()
   5 {
   6   int i;
   7   signed char result = 0;
   8   for (i = 0; i != 8000; ++i)
   9     {
  10       int tem = result;
  11       tem = tem + 2;
  12       result = tem;
  13     }
  14   if (__builtin_abs ((int)(signed char)((unsigned char ) result + 128)) != 0)
  15     __builtin_abort ();
  16   return 0;
  17 }
  18
  19 /* SCEV constant propagation should be able to compute the overall effect
  20    of the loop.  */
  21
  22 /* { dg-final { scan-tree-dump-not "abort" "optimized" } } */