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1//===- MetadataImpl.h - Helpers for implementing metadata -----------------===//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// This file has private helpers for implementing metadata types.10//11//===----------------------------------------------------------------------===//12 13#ifndef LLVM_IR_METADATAIMPL_H14#define LLVM_IR_METADATAIMPL_H15 16#include "llvm/ADT/DenseSet.h"17#include "llvm/IR/Metadata.h"18 19namespace llvm {20 21template <class T, class InfoT>22static T *getUniqued(DenseSet<T *, InfoT> &Store,23 const typename InfoT::KeyTy &Key) {24 auto I = Store.find_as(Key);25 return I == Store.end() ? nullptr : *I;26}27 28template <class T> T *MDNode::storeImpl(T *N, StorageType Storage) {29 switch (Storage) {30 case Uniqued:31 llvm_unreachable("Cannot unique without a uniquing-store");32 case Distinct:33 N->storeDistinctInContext();34 break;35 case Temporary:36 break;37 }38 return N;39}40 41template <class T, class StoreT>42T *MDNode::storeImpl(T *N, StorageType Storage, StoreT &Store) {43 switch (Storage) {44 case Uniqued:45 Store.insert(N);46 break;47 case Distinct:48 N->storeDistinctInContext();49 break;50 case Temporary:51 break;52 }53 return N;54}55 56} // end namespace llvm57 58#endif59