gcc/testsuite/gcc.dg/tree-ssa/ldist-10.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ftree-loop-distribution -fdump-tree-ldist-all" } */
   3
   4 int loop1 (int k)
   5 {
   6   unsigned int i;
   7   int a[1000], b[1000], c[1000];
   8
   9   for (i = 1; i < 1000; i ++)
  10     {
  11       a[i] = c[i]; /* S1 */
  12       b[i] = a[i-1]+1; /* S2 */
  13     }
  14   /* Dependences:
  15      S1->S2 (flow, level 1)
  16
  17      One partition as A is used in both S1 and S2.
  18   */
  19
  20   return a[1000-2] + b[1000-1] + c[1000-2];
  21 }
  22
  23 /* { dg-final { scan-tree-dump-times "distributed: split to 2 loops" 0 "ldist" } } */