gcc/testsuite/gcc.dg/pr58742-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-cddce1" } */
   3
   4 int *
   5 fx (int *b, int *e)
   6 {
   7   __SIZE_TYPE__ p = e - b;
   8   /* The first forwprop pass should optimize this to return e;  */
   9   return b + p;
  10 }
  11
  12 /* { dg-final { scan-tree-dump "return e" "cddce1" } } */