gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-39.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-fre1" } */
   3
   4 int foo (int i)
   5 {
   6   int k = i + 1;
   7   int j = i + 1;
   8   if (k != j)
   9     k = k + 1;
  10   if (k != j)
  11     k = k + 1;
  12   k = k - i;
  13   return k;
  14 }
  15
  16 /* We should be able to value-number the final assignment to k to 1.  */
  17
  18 /* { dg-final { scan-tree-dump "return 1;" "fre1" } } */