22 lines · cpp
1//===- CombinerUtils.cpp --------------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "CombinerUtils.h"10#include "llvm/ADT/StringSet.h"11 12using namespace llvm;13 14StringRef llvm::insertStrRef(StringRef S) {15 if (S.empty())16 return {};17 18 static StringSet<> Pool;19 auto [It, Inserted] = Pool.insert(S);20 return It->getKey();21}22