pub unsafe fn process_implied_equality(
arg_root: *mut PlannerInfo,
arg_opno: Oid,
arg_collation: Oid,
arg_item1: *mut Expr,
arg_item2: *mut Expr,
arg_qualscope: *mut Bitmapset,
arg_nullable_relids: *mut Bitmapset,
arg_security_level: u32,
arg_below_outer_join: bool,
arg_both_const: bool,
) -> *mut RestrictInfo