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/* { dg-do compile } */

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

/* Compile with -fno-tree-fre -O2 to prevent CSEing *p.  */

foo (int a, int *p)

{

  int x = *p + 2;

  int y = *p - 1;

  int z = *p + 9;

  /* This should be folded to if (1), but only one ASSERT_EXPR should

     be inserted.  */

  if (p)

    a = x + y + z;

  else

    a = x - y;

  return a;

}

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

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

/* { dg-final { scan-tree-dump-times "PREDICATE: p_.* ne_expr 0" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */

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

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