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83
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1 //===- MetadataImpl.h - Helpers for implementing metadata -----------------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file has private helpers for implementing metadata types.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #ifndef LLVM_IR_METADATAIMPL_H
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15 #define LLVM_IR_METADATAIMPL_H
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16
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17 #include "llvm/ADT/DenseSet.h"
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18 #include "llvm/IR/Metadata.h"
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19
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20 namespace llvm {
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21
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22 template <class T, class InfoT>
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23 static T *getUniqued(DenseSet<T *, InfoT> &Store,
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24 const typename InfoT::KeyTy &Key) {
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25 auto I = Store.find_as(Key);
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26 return I == Store.end() ? nullptr : *I;
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27 }
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28
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95
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29 template <class T> T *MDNode::storeImpl(T *N, StorageType Storage) {
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30 switch (Storage) {
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31 case Uniqued:
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32 llvm_unreachable("Cannot unique without a uniquing-store");
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33 case Distinct:
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34 N->storeDistinctInContext();
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35 break;
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36 case Temporary:
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37 break;
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38 }
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39 return N;
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40 }
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41
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83
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42 template <class T, class StoreT>
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43 T *MDNode::storeImpl(T *N, StorageType Storage, StoreT &Store) {
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44 switch (Storage) {
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45 case Uniqued:
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46 Store.insert(N);
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47 break;
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48 case Distinct:
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49 N->storeDistinctInContext();
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50 break;
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51 case Temporary:
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52 break;
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53 }
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54 return N;
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55 }
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56
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57 } // end namespace llvm
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58
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59 #endif
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