gcc/testsuite/gcc.dg/tree-ssa/cunroll-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -fdump-tree-ivcanon-details" } */
   3 int a[1];
   4 void test2 (void);
   5 void
   6 test(int c)
   7 {
   8   int i=0,j;
   9   for (i=0;i<c;i++)
  10     {
  11       for (j=0;j<c;j++)
  12         {
  13           a[i]=5;
  14           test2();
  15         }
  16     }
  17 }
  18
  19 /* We should do this as part of cunrolli, but our cost model do not take into account early exit
  20    from the last iteration.  */
  21 /* { dg-final { scan-tree-dump "loop turned into non-loop; it never loops." "ivcanon"} } */
  22 /* { dg-final { scan-tree-dump "Last iteration exit edge was proved true." "ivcanon"} } */