Subversion Repositories openrisc

/* { dg-do compile } */

/* { dg-options "-O2 -fdump-tree-vrp1-details" } */

foo (int i, int *p)

{

  int j;

  if (i > 10)

    {

      if (p)

        {

          j = *p;

          /* This should be folded to if (1) because of the parent 'if

             (p)'.  But the dereference of p above does not need an

             assertion.  */

          if (p)

            return j + 1;

        }

    }

  else

    {

      j = *p - 3;

      /* This should be folded to if (0), because p has just been

         dereferenced.  But we were not inserting enough ASSERT_EXPRs

         to figure it out.  */

      if (!p)

        return j - 4;

    }

  return i;

}

/* Target with fno-delete-null-pointer-checks should not fold checks */

/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp1" } } */

/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 0" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */

/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 0" 0 "vrp1" { target {   keeps_null_pointer_checks } } } } */

/* { dg-final { scan-tree-dump-times "PREDICATE: p_\[0-9\]" 2 "vrp1" { target { ! keeps_null_pointer_checks } } } } */

/* { dg-final { scan-tree-dump-times "PREDICATE: p_\[0-9\]" 1 "vrp1" { target {   keeps_null_pointer_checks } } } } */

/* { dg-final { cleanup-tree-dump "vrp1" } } */