1  /* { dg-do compile { target { ilp32 || lp64 } } } */
       2  /* { dg-options "-O2 -fno-ipa-icf -fdump-tree-optimized" } */
       3  
       4  /* All four functions should be folded to:
       5  
       6     (sizetype) (a + 15 - b) < 30.  */
       7  
       8  _Bool
       9  f1 (char *a, char *b)
      10  {
      11    return (a + 16 <= b) || (b + 16 <= a);
      12  }
      13  
      14  _Bool
      15  f2 (char *a, char *b)
      16  {
      17    return (a + 15 < b) || (b + 15 < a);
      18  }
      19  
      20  _Bool
      21  f3 (char *a, char *b)
      22  {
      23    return (a + 16 <= b) | (b + 16 <= a);
      24  }
      25  
      26  _Bool
      27  f4 (char *a, char *b)
      28  {
      29    return (a + 15 < b) | (b + 15 < a);
      30  }
      31  
      32  /* { dg-final { scan-tree-dump-times { = [^\n]* - [^\n]*;} 4 "optimized" } } */
      33  /* { dg-final { scan-tree-dump-times { = [^\n]* \+ [^\n]*;} 4 "optimized" } } */
      34  /* { dg-final { scan-tree-dump-times { = [^\n]*\ > [^\n]*;} 4 "optimized" } } */
      35  /* { dg-final { scan-tree-dump-not {=[^\n]*\ < [^\n]*;} "optimized" } } */
      36  /* { dg-final { scan-tree-dump-times { \+ 15} 4 "optimized" } } */
      37  /* { dg-final { scan-tree-dump-times { > 30} 4 "optimized" } } */