1//===- Optional.cpp - Optional values ---------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "llvm/Support/raw_ostream.h"
10
11llvm::raw_ostream &llvm::operator<<(raw_ostream &OS, std::nullopt_t) {
12 return OS << "None";
13}
14

source code of llvm/lib/Support/Optional.cpp