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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" } } */