gcc/testsuite/gcc.dg/tree-ssa/modref-dse-7.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized"  } */
   3 struct list
   4 {
   5          struct list *next;
   6 };
   7 __attribute__ ((noinline))
   8 void
   9 kill(struct list *l, int *a)
  10 {
  11         while (l)
  12                 l=l->next;
  13         *a = 0;
  14 }
  15 void
  16 test(struct list *l, int *a)
  17 {
  18         *a=12345;
  19         kill (l, a);
  20         return;
  21 }
  22 /* { dg-final { scan-tree-dump-not "12345" "optimized"} } */