gcc/testsuite/gcc.dg/tree-ssa/ssa-sccvn-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-fre1" } */
   3 int *p;
   4 int main(int argc, char **argv)
   5 {
   6   int result;
   7   *p = 2;
   8   if (argc)
   9     *p = 2;
  10   result = *p;
  11   return result;
  12 }
  13 /* We should eliminate result = *p by saying it has the value 2.  */
  14 /* { dg-final { scan-tree-dump "return 2;" "fre1"} } */