gcc/testsuite/gcc.dg/tree-ssa/loop-29.c

   1 /* PR 31885 */
   2
   3 /* { dg-do compile } */
   4 /* { dg-options "-O1 -fdump-tree-empty" } */
   5
   6 struct s {
   7     int *blah;
   8 };
   9
  10 static struct s array[] = { { 0 } };
  11
  12 void
  13 foo (struct s *p)
  14 {
  15   struct s *q = &array[1];
  16   while (p < q)
  17     p++;
  18 }
  19
  20 /* { dg-final { scan-tree-dump-times "Removing empty loop" 1 "empty" } } */
  21 /* { dg-final { cleanup-tree-dump "empty" } } */