1 //===- MetadataImpl.h - Helpers for implementing metadata -----------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file has private helpers for implementing metadata types.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #ifndef LLVM_IR_METADATAIMPL_H
15 #define LLVM_IR_METADATAIMPL_H
16
17 #include "llvm/ADT/DenseSet.h"
18 #include "llvm/IR/Metadata.h"
19
20 namespace llvm {
21
22 template <class T, class InfoT>
getUniqued(DenseSet<T *,InfoT> & Store,const typename InfoT::KeyTy & Key)23 static T *getUniqued(DenseSet<T *, InfoT> &Store,
24 const typename InfoT::KeyTy &Key) {
25 auto I = Store.find_as(Key);
26 return I == Store.end() ? nullptr : *I;
27 }
28
29 template <class T, class StoreT>
storeImpl(T * N,StorageType Storage,StoreT & Store)30 T *MDNode::storeImpl(T *N, StorageType Storage, StoreT &Store) {
31 switch (Storage) {
32 case Uniqued:
33 Store.insert(N);
34 break;
35 case Distinct:
36 N->storeDistinctInContext();
37 break;
38 case Temporary:
39 break;
40 }
41 return N;
42 }
43
44 } // end namespace llvm
45
46 #endif
47