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1 //===- MetadataImpl.h - Helpers for implementing metadata -----------------===//
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2 //
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147
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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83
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6 //
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7 //===----------------------------------------------------------------------===//
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8 //
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9 // This file has private helpers for implementing metadata types.
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10 //
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11 //===----------------------------------------------------------------------===//
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12
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13 #ifndef LLVM_IR_METADATAIMPL_H
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14 #define LLVM_IR_METADATAIMPL_H
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15
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16 #include "llvm/ADT/DenseSet.h"
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17 #include "llvm/IR/Metadata.h"
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18
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19 namespace llvm {
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20
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21 template <class T, class InfoT>
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22 static T *getUniqued(DenseSet<T *, InfoT> &Store,
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23 const typename InfoT::KeyTy &Key) {
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24 auto I = Store.find_as(Key);
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25 return I == Store.end() ? nullptr : *I;
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26 }
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27
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28 template <class T> T *MDNode::storeImpl(T *N, StorageType Storage) {
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29 switch (Storage) {
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30 case Uniqued:
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31 llvm_unreachable("Cannot unique without a uniquing-store");
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32 case Distinct:
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33 N->storeDistinctInContext();
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34 break;
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35 case Temporary:
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36 break;
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37 }
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38 return N;
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39 }
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40
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83
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41 template <class T, class StoreT>
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42 T *MDNode::storeImpl(T *N, StorageType Storage, StoreT &Store) {
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43 switch (Storage) {
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44 case Uniqued:
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45 Store.insert(N);
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46 break;
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47 case Distinct:
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48 N->storeDistinctInContext();
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49 break;
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50 case Temporary:
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51 break;
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52 }
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53 return N;
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54 }
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55
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56 } // end namespace llvm
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57
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58 #endif
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