1  /* PR37997 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -fdump-tree-pre-details -fno-code-hoisting" } */
       4  
       5  int foo (int i, int b, int result)
       6  {
       7    int mask;
       8    if (b)
       9      mask = -2;
      10    else
      11      mask = 0;
      12    result = i + 1;
      13    result = result & mask;
      14    return result;
      15  }
      16  
      17  /* We should insert i + 1 into the if (b) path as well as the simplified
      18     i + 1 & -2 expression.  And do replacement with two PHI temps.  */
      19  /* With hoisting enabled we'd hoist i + 1 to before the if, retaining
      20     only one PHI node.  */
      21  
      22  /* { dg-final { scan-tree-dump-times "with prephitmp" 2 "pre" } } */