1  /* { dg-do compile } */
       2  /* { dg-options "-fgcse -fgcse-sm" } */
       3  
       4  typedef struct A {
       5      int buf, left;
       6  } A;
       7  
       8  static void flush(A *s, int n)
       9  {
      10      s->buf <<= n;
      11  
      12      while (s->left < 32) {
      13          s->buf <<= 8;
      14          s->left += 8;
      15      }
      16  
      17      s->buf=0;
      18  }
      19  
      20  void oof(A *s, int n)
      21  {
      22      s->buf = n;
      23      s->left = n;
      24  
      25      flush(s, n);
      26  }