1  /* { dg-do compile } */ 
       2  /* { dg-options "-O2 -w -fdump-tree-dom2-details" } */
       3  
       4  typedef struct rtx_def *rtx;
       5  struct rtx_def
       6  {
       7    int code;
       8    rtx rt_rtx;
       9  };
      10  rtx
      11  try_combine (rtx i1, rtx newpat)
      12  {
      13    rtx temp;
      14    if (i1 && (temp = ((((((newpat->rt_rtx, ((((temp)->code) == 42)))))))))
      15        && ((temp =
      16  	(((((((((((newpat)->rt_rtx),
      17  		 ((((temp)->code) == 42) && arf ())))))))))))))
      18      ;
      19    else if (i1 && foo ());
      20  }
      21  
      22  /* There should be 3 tests against i1.  Two from DOM machinery and one
      23     in the code itself.  */
      24  /* { dg-final { scan-tree-dump-times "if .i1_" 3 "dom2"} } */
      25  
      26  /* There should be no actual jump threads realized by DOM.  The
      27     legitimize jump threads are handled in VRP and those discovered
      28     by DOM are subsumed by collapsing a conditional.  */
      29  /* { dg-final { scan-tree-dump-not "Threaded" "dom2"} } */