1  /* PR rtl-optimization/46777 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-fgcse -O -fno-tree-dominator-opts -funroll-loops" } */
       4  
       5  struct S { char s[256]; };
       6  
       7  static inline int
       8  foo (int x, int y)
       9  {
      10    switch (x)
      11      {
      12      case 1:
      13      case 2:
      14        return 3;
      15      case 3:
      16      case 4:
      17        return 2;
      18      case 5:
      19        switch (y)
      20  	{
      21  	case 4:
      22  	  return 1;
      23  	}
      24      }
      25    return 0;
      26  }
      27  
      28  void
      29  bar (struct S *x, int *y, int *z, int **w)
      30  {
      31    switch (*y ? x->s[*y] : foo (y[1], y[0]))
      32      {
      33      case 3:
      34        if (y + 2 == z)
      35  	for (;;)
      36  	  {
      37  	    y += 2;
      38  	    switch (*y ? x->s[*y] : foo (y[1], y[0]))
      39  	      {
      40  	      case 6:
      41  		break;
      42  	      default:
      43  		*w = y;
      44  	      }
      45  	    if (y == z)
      46  	      break;
      47  	  }
      48      }
      49  }