gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-dce3" } */
   3
   4 int t() __attribute__ ((const));
   5 q()
   6 {
   7   int i = t();
   8   if (!i)
   9     i = t();
  10 }
  11 /* There should be no IF conditionals.  */
  12 /* { dg-final { scan-tree-dump-times "if " 0 "dce3"} } */
  13 /* { dg-final { cleanup-tree-dump "dce3" } } */