pub const BuiltinValue = enum(u16) {
    // Types
    atomic_order,
    atomic_rmw_op,
    calling_convention,
    address_space,
    float_mode,
    reduce_op,
    call_modifier,
    prefetch_options,
    export_options,
    extern_options,
    type_info,
    branch_hint,
    // Values
    calling_convention_c,
    calling_convention_inline,
}