1  /* { dg-do compile } */
       2  /* { dg-options "-O3 -march=z10 -mzarch" } */
       3  
       4  /* risbg with z bit would work here but we rather want this to be a shift.  */
       5  struct
       6  {
       7    int a:31;
       8    int b:1;
       9  } s;
      10  
      11  void
      12  foo (int in)
      13  {
      14    s.a = in;
      15    s.b = 0;
      16  }
      17  
      18  /* { dg-final { scan-assembler-not "risbg" } } */