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-exception 6// 7//===----------------------------------------------------------------------===// 8 9#include "CombinerUtils.h" 10#include "llvm/ADT/StringSet.h" 11 12namespace llvm { 13 14StringRef 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 23} // namespace llvm 24 25