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-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file has private helpers for implementing metadata types.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #ifndef LLVM_IR_METADATAIMPL_H
14 #define LLVM_IR_METADATAIMPL_H
15
16 #include "llvm/ADT/DenseSet.h"
17 #include "llvm/IR/Metadata.h"
18
19 namespace llvm {
20
21 template <class T, class InfoT>
getUniqued(DenseSet<T *,InfoT> & Store,const typename InfoT::KeyTy & Key)22 static 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
storeImpl(T * N,StorageType Storage)28 template <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
41 template <class T, class StoreT>
storeImpl(T * N,StorageType Storage,StoreT & Store)42 T *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 llvm
57
58 #endif
59