1  /* PR tree-optimization/57980 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O -foptimize-sibling-calls -w" } */
       4  
       5  typedef int V __attribute__ ((vector_size (2 * sizeof (int))));
       6  extern V f (void);
       7  
       8  V
       9  bar (void)
      10  {
      11    return -f ();
      12  }
      13  
      14  V
      15  foo (void)
      16  {
      17    V v = { };
      18    return v - f ();
      19  }