1  /* PR tree-optimization/78888 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -fdump-tree-evrp" } */
       4  
       5  void kill (void);
       6  void keep (void);
       7  
       8  void g (int x)
       9  {
      10    if (__builtin_toupper ((unsigned char)x) == 'a')
      11      kill ();
      12    if (__builtin_toupper ((unsigned char)x) == 'z')
      13      kill ();
      14    if (__builtin_tolower ((unsigned char)x) == 'A')
      15      kill ();
      16    if (__builtin_tolower ((unsigned char)x) == 'Z')
      17      kill ();
      18  
      19    if (__builtin_toupper ((unsigned char)x) == 'A')
      20      keep ();
      21    if (__builtin_toupper ((unsigned char)x) == 'Z')
      22      keep ();
      23    if (__builtin_tolower ((unsigned char)x) == 'a')
      24      keep ();
      25    if (__builtin_tolower ((unsigned char)x) == 'z')
      26      keep ();
      27  }
      28  /* { dg-final { scan-tree-dump-not "kill" "evrp" } }  */
      29  /* { dg-final { scan-tree-dump-times "keep" 4 "evrp"} } */