Subversion Repositories openrisc_2011-10-31

/* PR tree-optimization/25501
   The PHI merge pass used to try to merge PHI nodes that cannot
   actually merged, causing a segfault later.  Make sure that does not
   happen any more.  */
 
/* { dg-options "-O1 -fdump-tree-mergephi" } */
 
int
foo (int a)
{
  int b;
  int c;
  int d;
 
  if (a == 2)
    b = 3;
  else
    b = 5;
 
  c = 7;
 
  d = 11;
 
  for (;;)
    {
      if (d == 5)
	break;
 
      d = b;
    }
 
  return 13;
}
 
/* { dg-final { scan-tree-dump-times "Removing basic block" 0 "mergephi1"} } */
/* { dg-final { cleanup-tree-dump "mergephi\[1-2\]" } } */