1  /* { dg-do compile } */
       2  /* { dg-options "-O1 -fdump-tree-dom2" } */
       3                                                                                  
       4  typedef unsigned int cppchar_t;
       5  void foo (void);
       6  cppchar_t oof (void);
       7  cppchar_t
       8  cpp_parse_escape (pstr, limit, wide)
       9       const unsigned char **pstr;
      10       const unsigned char *limit;
      11       int wide;
      12  {
      13    cppchar_t i = 0;
      14    int overflow = 0;
      15    cppchar_t mask = ~0;
      16  
      17     while (*pstr < limit)
      18       {
      19         overflow |= i ^ (i << 4 >> 4);
      20         i = oof ();
      21       }
      22     if (overflow |  (i != (i & mask)))
      23       foo();
      24  }
      25  
      26  /* There should be precisely three IF statements.  If there is
      27     more than two, then the dominator optimizations failed.  */
      28  /* { dg-final { scan-tree-dump-times "if " 3 "dom2"} } */