comparison lib/IR/Metadata.cpp @ 95:afa8332a0e37

LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900 (2015-10-13)
parents 60c9769439b8
children 7d135dc70f03
comparison
equal deleted inserted replaced
84:f3e34b893a5f 95:afa8332a0e37
254 auto &Context = V->getContext(); 254 auto &Context = V->getContext();
255 auto *&Entry = Context.pImpl->ValuesAsMetadata[V]; 255 auto *&Entry = Context.pImpl->ValuesAsMetadata[V];
256 if (!Entry) { 256 if (!Entry) {
257 assert((isa<Constant>(V) || isa<Argument>(V) || isa<Instruction>(V)) && 257 assert((isa<Constant>(V) || isa<Argument>(V) || isa<Instruction>(V)) &&
258 "Expected constant or function-local value"); 258 "Expected constant or function-local value");
259 assert(!V->NameAndIsUsedByMD.getInt() && 259 assert(!V->IsUsedByMD &&
260 "Expected this to be the only metadata use"); 260 "Expected this to be the only metadata use");
261 V->NameAndIsUsedByMD.setInt(true); 261 V->IsUsedByMD = true;
262 if (auto *C = dyn_cast<Constant>(V)) 262 if (auto *C = dyn_cast<Constant>(V))
263 Entry = new ConstantAsMetadata(C); 263 Entry = new ConstantAsMetadata(C);
264 else 264 else
265 Entry = new LocalAsMetadata(V); 265 Entry = new LocalAsMetadata(V);
266 } 266 }
300 300
301 LLVMContext &Context = From->getType()->getContext(); 301 LLVMContext &Context = From->getType()->getContext();
302 auto &Store = Context.pImpl->ValuesAsMetadata; 302 auto &Store = Context.pImpl->ValuesAsMetadata;
303 auto I = Store.find(From); 303 auto I = Store.find(From);
304 if (I == Store.end()) { 304 if (I == Store.end()) {
305 assert(!From->NameAndIsUsedByMD.getInt() && 305 assert(!From->IsUsedByMD &&
306 "Expected From not to be used by metadata"); 306 "Expected From not to be used by metadata");
307 return; 307 return;
308 } 308 }
309 309
310 // Remove old entry from the map. 310 // Remove old entry from the map.
311 assert(From->NameAndIsUsedByMD.getInt() && 311 assert(From->IsUsedByMD &&
312 "Expected From to be used by metadata"); 312 "Expected From to be used by metadata");
313 From->NameAndIsUsedByMD.setInt(false); 313 From->IsUsedByMD = false;
314 ValueAsMetadata *MD = I->second; 314 ValueAsMetadata *MD = I->second;
315 assert(MD && "Expected valid metadata"); 315 assert(MD && "Expected valid metadata");
316 assert(MD->getValue() == From && "Expected valid mapping"); 316 assert(MD->getValue() == From && "Expected valid mapping");
317 Store.erase(I); 317 Store.erase(I);
318 318
344 delete MD; 344 delete MD;
345 return; 345 return;
346 } 346 }
347 347
348 // Update MD in place (and update the map entry). 348 // Update MD in place (and update the map entry).
349 assert(!To->NameAndIsUsedByMD.getInt() && 349 assert(!To->IsUsedByMD &&
350 "Expected this to be the only metadata use"); 350 "Expected this to be the only metadata use");
351 To->NameAndIsUsedByMD.setInt(true); 351 To->IsUsedByMD = true;
352 MD->V = To; 352 MD->V = To;
353 Entry = MD; 353 Entry = MD;
354 } 354 }
355 355
356 //===----------------------------------------------------------------------===// 356 //===----------------------------------------------------------------------===//
379 379
380 //===----------------------------------------------------------------------===// 380 //===----------------------------------------------------------------------===//
381 // MDNode implementation. 381 // MDNode implementation.
382 // 382 //
383 383
384 // Assert that the MDNode types will not be unaligned by the objects
385 // prepended to them.
386 #define HANDLE_MDNODE_LEAF(CLASS) \
387 static_assert( \
388 llvm::AlignOf<uint64_t>::Alignment >= llvm::AlignOf<CLASS>::Alignment, \
389 "Alignment is insufficient after objects prepended to " #CLASS);
390 #include "llvm/IR/Metadata.def"
391
384 void *MDNode::operator new(size_t Size, unsigned NumOps) { 392 void *MDNode::operator new(size_t Size, unsigned NumOps) {
385 void *Ptr = ::operator new(Size + NumOps * sizeof(MDOperand)); 393 size_t OpSize = NumOps * sizeof(MDOperand);
394 // uint64_t is the most aligned type we need support (ensured by static_assert
395 // above)
396 OpSize = RoundUpToAlignment(OpSize, llvm::alignOf<uint64_t>());
397 void *Ptr = reinterpret_cast<char *>(::operator new(OpSize + Size)) + OpSize;
386 MDOperand *O = static_cast<MDOperand *>(Ptr); 398 MDOperand *O = static_cast<MDOperand *>(Ptr);
387 for (MDOperand *E = O + NumOps; O != E; ++O) 399 for (MDOperand *E = O - NumOps; O != E; --O)
388 (void)new (O) MDOperand; 400 (void)new (O - 1) MDOperand;
389 return O; 401 return Ptr;
390 } 402 }
391 403
392 void MDNode::operator delete(void *Mem) { 404 void MDNode::operator delete(void *Mem) {
393 MDNode *N = static_cast<MDNode *>(Mem); 405 MDNode *N = static_cast<MDNode *>(Mem);
406 size_t OpSize = N->NumOperands * sizeof(MDOperand);
407 OpSize = RoundUpToAlignment(OpSize, llvm::alignOf<uint64_t>());
408
394 MDOperand *O = static_cast<MDOperand *>(Mem); 409 MDOperand *O = static_cast<MDOperand *>(Mem);
395 for (MDOperand *E = O - N->NumOperands; O != E; --O) 410 for (MDOperand *E = O - N->NumOperands; O != E; --O)
396 (O - 1)->~MDOperand(); 411 (O - 1)->~MDOperand();
397 ::operator delete(O); 412 ::operator delete(reinterpret_cast<char *>(Mem) - OpSize);
398 } 413 }
399 414
400 MDNode::MDNode(LLVMContext &Context, unsigned ID, StorageType Storage, 415 MDNode::MDNode(LLVMContext &Context, unsigned ID, StorageType Storage,
401 ArrayRef<Metadata *> Ops1, ArrayRef<Metadata *> Ops2) 416 ArrayRef<Metadata *> Ops1, ArrayRef<Metadata *> Ops2)
402 : Metadata(ID, Storage), NumOperands(Ops1.size() + Ops2.size()), 417 : Metadata(ID, Storage), NumOperands(Ops1.size() + Ops2.size()),
444 459
445 void MDNode::makeUniqued() { 460 void MDNode::makeUniqued() {
446 assert(isTemporary() && "Expected this to be temporary"); 461 assert(isTemporary() && "Expected this to be temporary");
447 assert(!isResolved() && "Expected this to be unresolved"); 462 assert(!isResolved() && "Expected this to be unresolved");
448 463
464 // Enable uniquing callbacks.
465 for (auto &Op : mutable_operands())
466 Op.reset(Op.get(), this);
467
449 // Make this 'uniqued'. 468 // Make this 'uniqued'.
450 Storage = Uniqued; 469 Storage = Uniqued;
451 if (!countUnresolvedOperands()) 470 if (!countUnresolvedOperands())
452 resolve(); 471 resolve();
453 472
524 return true; 543 return true;
525 return false; 544 return false;
526 } 545 }
527 546
528 MDNode *MDNode::replaceWithPermanentImpl() { 547 MDNode *MDNode::replaceWithPermanentImpl() {
548 switch (getMetadataID()) {
549 default:
550 // If this type isn't uniquable, replace with a distinct node.
551 return replaceWithDistinctImpl();
552
553 #define HANDLE_MDNODE_LEAF_UNIQUABLE(CLASS) \
554 case CLASS##Kind: \
555 break;
556 #include "llvm/IR/Metadata.def"
557 }
558
559 // Even if this type is uniquable, self-references have to be distinct.
529 if (hasSelfReference(this)) 560 if (hasSelfReference(this))
530 return replaceWithDistinctImpl(); 561 return replaceWithDistinctImpl();
531 return replaceWithUniquedImpl(); 562 return replaceWithUniquedImpl();
532 } 563 }
533 564
650 assert(!hasSelfReference(this) && "Cannot uniquify a self-referencing node"); 681 assert(!hasSelfReference(this) && "Cannot uniquify a self-referencing node");
651 682
652 // Try to insert into uniquing store. 683 // Try to insert into uniquing store.
653 switch (getMetadataID()) { 684 switch (getMetadataID()) {
654 default: 685 default:
655 llvm_unreachable("Invalid subclass of MDNode"); 686 llvm_unreachable("Invalid or non-uniquable subclass of MDNode");
656 #define HANDLE_MDNODE_LEAF(CLASS) \ 687 #define HANDLE_MDNODE_LEAF_UNIQUABLE(CLASS) \
657 case CLASS##Kind: { \ 688 case CLASS##Kind: { \
658 CLASS *SubclassThis = cast<CLASS>(this); \ 689 CLASS *SubclassThis = cast<CLASS>(this); \
659 std::integral_constant<bool, HasCachedHash<CLASS>::value> \ 690 std::integral_constant<bool, HasCachedHash<CLASS>::value> \
660 ShouldRecalculateHash; \ 691 ShouldRecalculateHash; \
661 dispatchRecalculateHash(SubclassThis, ShouldRecalculateHash); \ 692 dispatchRecalculateHash(SubclassThis, ShouldRecalculateHash); \
666 } 697 }
667 698
668 void MDNode::eraseFromStore() { 699 void MDNode::eraseFromStore() {
669 switch (getMetadataID()) { 700 switch (getMetadataID()) {
670 default: 701 default:
671 llvm_unreachable("Invalid subclass of MDNode"); 702 llvm_unreachable("Invalid or non-uniquable subclass of MDNode");
672 #define HANDLE_MDNODE_LEAF(CLASS) \ 703 #define HANDLE_MDNODE_LEAF_UNIQUABLE(CLASS) \
673 case CLASS##Kind: \ 704 case CLASS##Kind: \
674 getContext().pImpl->CLASS##s.erase(cast<CLASS>(this)); \ 705 getContext().pImpl->CLASS##s.erase(cast<CLASS>(this)); \
675 break; 706 break;
676 #include "llvm/IR/Metadata.def" 707 #include "llvm/IR/Metadata.def"
677 } 708 }
969 } 1000 }
970 1001
971 //===----------------------------------------------------------------------===// 1002 //===----------------------------------------------------------------------===//
972 // Instruction Metadata method implementations. 1003 // Instruction Metadata method implementations.
973 // 1004 //
1005 void MDAttachmentMap::set(unsigned ID, MDNode &MD) {
1006 for (auto &I : Attachments)
1007 if (I.first == ID) {
1008 I.second.reset(&MD);
1009 return;
1010 }
1011 Attachments.emplace_back(std::piecewise_construct, std::make_tuple(ID),
1012 std::make_tuple(&MD));
1013 }
1014
1015 void MDAttachmentMap::erase(unsigned ID) {
1016 if (empty())
1017 return;
1018
1019 // Common case is one/last value.
1020 if (Attachments.back().first == ID) {
1021 Attachments.pop_back();
1022 return;
1023 }
1024
1025 for (auto I = Attachments.begin(), E = std::prev(Attachments.end()); I != E;
1026 ++I)
1027 if (I->first == ID) {
1028 *I = std::move(Attachments.back());
1029 Attachments.pop_back();
1030 return;
1031 }
1032 }
1033
1034 MDNode *MDAttachmentMap::lookup(unsigned ID) const {
1035 for (const auto &I : Attachments)
1036 if (I.first == ID)
1037 return I.second;
1038 return nullptr;
1039 }
1040
1041 void MDAttachmentMap::getAll(
1042 SmallVectorImpl<std::pair<unsigned, MDNode *>> &Result) const {
1043 Result.append(Attachments.begin(), Attachments.end());
1044
1045 // Sort the resulting array so it is stable.
1046 if (Result.size() > 1)
1047 array_pod_sort(Result.begin(), Result.end());
1048 }
974 1049
975 void Instruction::setMetadata(StringRef Kind, MDNode *Node) { 1050 void Instruction::setMetadata(StringRef Kind, MDNode *Node) {
976 if (!Node && !hasMetadata()) 1051 if (!Node && !hasMetadata())
977 return; 1052 return;
978 setMetadata(getContext().getMDKindID(Kind), Node); 1053 setMetadata(getContext().getMDKindID(Kind), Node);
980 1055
981 MDNode *Instruction::getMetadataImpl(StringRef Kind) const { 1056 MDNode *Instruction::getMetadataImpl(StringRef Kind) const {
982 return getMetadataImpl(getContext().getMDKindID(Kind)); 1057 return getMetadataImpl(getContext().getMDKindID(Kind));
983 } 1058 }
984 1059
985 void Instruction::dropUnknownMetadata(ArrayRef<unsigned> KnownIDs) { 1060 void Instruction::dropUnknownNonDebugMetadata(ArrayRef<unsigned> KnownIDs) {
986 SmallSet<unsigned, 5> KnownSet; 1061 SmallSet<unsigned, 5> KnownSet;
987 KnownSet.insert(KnownIDs.begin(), KnownIDs.end()); 1062 KnownSet.insert(KnownIDs.begin(), KnownIDs.end());
988 1063
989 // Drop debug if needed
990 if (KnownSet.erase(LLVMContext::MD_dbg))
991 DbgLoc = DebugLoc();
992
993 if (!hasMetadataHashEntry()) 1064 if (!hasMetadataHashEntry())
994 return; // Nothing to remove! 1065 return; // Nothing to remove!
995 1066
996 DenseMap<const Instruction *, LLVMContextImpl::MDMapTy> &MetadataStore = 1067 auto &InstructionMetadata = getContext().pImpl->InstructionMetadata;
997 getContext().pImpl->MetadataStore;
998 1068
999 if (KnownSet.empty()) { 1069 if (KnownSet.empty()) {
1000 // Just drop our entry at the store. 1070 // Just drop our entry at the store.
1001 MetadataStore.erase(this); 1071 InstructionMetadata.erase(this);
1002 setHasMetadataHashEntry(false); 1072 setHasMetadataHashEntry(false);
1003 return; 1073 return;
1004 } 1074 }
1005 1075
1006 LLVMContextImpl::MDMapTy &Info = MetadataStore[this]; 1076 auto &Info = InstructionMetadata[this];
1007 unsigned I; 1077 Info.remove_if([&KnownSet](const std::pair<unsigned, TrackingMDNodeRef> &I) {
1008 unsigned E; 1078 return !KnownSet.count(I.first);
1009 // Walk the array and drop any metadata we don't know. 1079 });
1010 for (I = 0, E = Info.size(); I != E;) { 1080
1011 if (KnownSet.count(Info[I].first)) { 1081 if (Info.empty()) {
1012 ++I;
1013 continue;
1014 }
1015
1016 Info[I] = std::move(Info.back());
1017 Info.pop_back();
1018 --E;
1019 }
1020 assert(E == Info.size());
1021
1022 if (E == 0) {
1023 // Drop our entry at the store. 1082 // Drop our entry at the store.
1024 MetadataStore.erase(this); 1083 InstructionMetadata.erase(this);
1025 setHasMetadataHashEntry(false); 1084 setHasMetadataHashEntry(false);
1026 } 1085 }
1027 } 1086 }
1028 1087
1029 /// setMetadata - Set the metadata of of the specified kind to the specified 1088 /// setMetadata - Set the metadata of the specified kind to the specified
1030 /// node. This updates/replaces metadata if already present, or removes it if 1089 /// node. This updates/replaces metadata if already present, or removes it if
1031 /// Node is null. 1090 /// Node is null.
1032 void Instruction::setMetadata(unsigned KindID, MDNode *Node) { 1091 void Instruction::setMetadata(unsigned KindID, MDNode *Node) {
1033 if (!Node && !hasMetadata()) 1092 if (!Node && !hasMetadata())
1034 return; 1093 return;
1035 1094
1036 // Handle 'dbg' as a special case since it is not stored in the hash table. 1095 // Handle 'dbg' as a special case since it is not stored in the hash table.
1037 if (KindID == LLVMContext::MD_dbg) { 1096 if (KindID == LLVMContext::MD_dbg) {
1038 DbgLoc = DebugLoc::getFromDILocation(Node); 1097 DbgLoc = DebugLoc(Node);
1039 return; 1098 return;
1040 } 1099 }
1041 1100
1042 // Handle the case when we're adding/updating metadata on an instruction. 1101 // Handle the case when we're adding/updating metadata on an instruction.
1043 if (Node) { 1102 if (Node) {
1044 LLVMContextImpl::MDMapTy &Info = getContext().pImpl->MetadataStore[this]; 1103 auto &Info = getContext().pImpl->InstructionMetadata[this];
1045 assert(!Info.empty() == hasMetadataHashEntry() && 1104 assert(!Info.empty() == hasMetadataHashEntry() &&
1046 "HasMetadata bit is wonked"); 1105 "HasMetadata bit is wonked");
1047 if (Info.empty()) { 1106 if (Info.empty())
1048 setHasMetadataHashEntry(true); 1107 setHasMetadataHashEntry(true);
1049 } else { 1108 Info.set(KindID, *Node);
1050 // Handle replacement of an existing value.
1051 for (auto &P : Info)
1052 if (P.first == KindID) {
1053 P.second.reset(Node);
1054 return;
1055 }
1056 }
1057
1058 // No replacement, just add it to the list.
1059 Info.emplace_back(std::piecewise_construct, std::make_tuple(KindID),
1060 std::make_tuple(Node));
1061 return; 1109 return;
1062 } 1110 }
1063 1111
1064 // Otherwise, we're removing metadata from an instruction. 1112 // Otherwise, we're removing metadata from an instruction.
1065 assert((hasMetadataHashEntry() == 1113 assert((hasMetadataHashEntry() ==
1066 (getContext().pImpl->MetadataStore.count(this) > 0)) && 1114 (getContext().pImpl->InstructionMetadata.count(this) > 0)) &&
1067 "HasMetadata bit out of date!"); 1115 "HasMetadata bit out of date!");
1068 if (!hasMetadataHashEntry()) 1116 if (!hasMetadataHashEntry())
1069 return; // Nothing to remove! 1117 return; // Nothing to remove!
1070 LLVMContextImpl::MDMapTy &Info = getContext().pImpl->MetadataStore[this]; 1118 auto &Info = getContext().pImpl->InstructionMetadata[this];
1071
1072 // Common case is removing the only entry.
1073 if (Info.size() == 1 && Info[0].first == KindID) {
1074 getContext().pImpl->MetadataStore.erase(this);
1075 setHasMetadataHashEntry(false);
1076 return;
1077 }
1078 1119
1079 // Handle removal of an existing value. 1120 // Handle removal of an existing value.
1080 for (unsigned i = 0, e = Info.size(); i != e; ++i) 1121 Info.erase(KindID);
1081 if (Info[i].first == KindID) { 1122
1082 Info[i] = std::move(Info.back()); 1123 if (!Info.empty())
1083 Info.pop_back(); 1124 return;
1084 assert(!Info.empty() && "Removing last entry should be handled above"); 1125
1085 return; 1126 getContext().pImpl->InstructionMetadata.erase(this);
1086 } 1127 setHasMetadataHashEntry(false);
1087 // Otherwise, removing an entry that doesn't exist on the instruction.
1088 } 1128 }
1089 1129
1090 void Instruction::setAAMetadata(const AAMDNodes &N) { 1130 void Instruction::setAAMetadata(const AAMDNodes &N) {
1091 setMetadata(LLVMContext::MD_tbaa, N.TBAA); 1131 setMetadata(LLVMContext::MD_tbaa, N.TBAA);
1092 setMetadata(LLVMContext::MD_alias_scope, N.Scope); 1132 setMetadata(LLVMContext::MD_alias_scope, N.Scope);
1096 MDNode *Instruction::getMetadataImpl(unsigned KindID) const { 1136 MDNode *Instruction::getMetadataImpl(unsigned KindID) const {
1097 // Handle 'dbg' as a special case since it is not stored in the hash table. 1137 // Handle 'dbg' as a special case since it is not stored in the hash table.
1098 if (KindID == LLVMContext::MD_dbg) 1138 if (KindID == LLVMContext::MD_dbg)
1099 return DbgLoc.getAsMDNode(); 1139 return DbgLoc.getAsMDNode();
1100 1140
1101 if (!hasMetadataHashEntry()) return nullptr; 1141 if (!hasMetadataHashEntry())
1102 1142 return nullptr;
1103 LLVMContextImpl::MDMapTy &Info = getContext().pImpl->MetadataStore[this]; 1143 auto &Info = getContext().pImpl->InstructionMetadata[this];
1104 assert(!Info.empty() && "bit out of sync with hash table"); 1144 assert(!Info.empty() && "bit out of sync with hash table");
1105 1145
1106 for (const auto &I : Info) 1146 return Info.lookup(KindID);
1107 if (I.first == KindID)
1108 return I.second;
1109 return nullptr;
1110 } 1147 }
1111 1148
1112 void Instruction::getAllMetadataImpl( 1149 void Instruction::getAllMetadataImpl(
1113 SmallVectorImpl<std::pair<unsigned, MDNode *>> &Result) const { 1150 SmallVectorImpl<std::pair<unsigned, MDNode *>> &Result) const {
1114 Result.clear(); 1151 Result.clear();
1115 1152
1116 // Handle 'dbg' as a special case since it is not stored in the hash table. 1153 // Handle 'dbg' as a special case since it is not stored in the hash table.
1117 if (!DbgLoc.isUnknown()) { 1154 if (DbgLoc) {
1118 Result.push_back( 1155 Result.push_back(
1119 std::make_pair((unsigned)LLVMContext::MD_dbg, DbgLoc.getAsMDNode())); 1156 std::make_pair((unsigned)LLVMContext::MD_dbg, DbgLoc.getAsMDNode()));
1120 if (!hasMetadataHashEntry()) return; 1157 if (!hasMetadataHashEntry()) return;
1121 } 1158 }
1122 1159
1123 assert(hasMetadataHashEntry() && 1160 assert(hasMetadataHashEntry() &&
1124 getContext().pImpl->MetadataStore.count(this) && 1161 getContext().pImpl->InstructionMetadata.count(this) &&
1125 "Shouldn't have called this"); 1162 "Shouldn't have called this");
1126 const LLVMContextImpl::MDMapTy &Info = 1163 const auto &Info = getContext().pImpl->InstructionMetadata.find(this)->second;
1127 getContext().pImpl->MetadataStore.find(this)->second;
1128 assert(!Info.empty() && "Shouldn't have called this"); 1164 assert(!Info.empty() && "Shouldn't have called this");
1129 1165 Info.getAll(Result);
1130 Result.reserve(Result.size() + Info.size());
1131 for (auto &I : Info)
1132 Result.push_back(std::make_pair(I.first, cast<MDNode>(I.second.get())));
1133
1134 // Sort the resulting array so it is stable.
1135 if (Result.size() > 1)
1136 array_pod_sort(Result.begin(), Result.end());
1137 } 1166 }
1138 1167
1139 void Instruction::getAllMetadataOtherThanDebugLocImpl( 1168 void Instruction::getAllMetadataOtherThanDebugLocImpl(
1140 SmallVectorImpl<std::pair<unsigned, MDNode *>> &Result) const { 1169 SmallVectorImpl<std::pair<unsigned, MDNode *>> &Result) const {
1141 Result.clear(); 1170 Result.clear();
1142 assert(hasMetadataHashEntry() && 1171 assert(hasMetadataHashEntry() &&
1143 getContext().pImpl->MetadataStore.count(this) && 1172 getContext().pImpl->InstructionMetadata.count(this) &&
1144 "Shouldn't have called this"); 1173 "Shouldn't have called this");
1145 const LLVMContextImpl::MDMapTy &Info = 1174 const auto &Info = getContext().pImpl->InstructionMetadata.find(this)->second;
1146 getContext().pImpl->MetadataStore.find(this)->second;
1147 assert(!Info.empty() && "Shouldn't have called this"); 1175 assert(!Info.empty() && "Shouldn't have called this");
1148 Result.reserve(Result.size() + Info.size()); 1176 Info.getAll(Result);
1149 for (auto &I : Info)
1150 Result.push_back(std::make_pair(I.first, cast<MDNode>(I.second.get())));
1151
1152 // Sort the resulting array so it is stable.
1153 if (Result.size() > 1)
1154 array_pod_sort(Result.begin(), Result.end());
1155 } 1177 }
1156 1178
1157 /// clearMetadataHashEntries - Clear all hashtable-based metadata from 1179 /// clearMetadataHashEntries - Clear all hashtable-based metadata from
1158 /// this instruction. 1180 /// this instruction.
1159 void Instruction::clearMetadataHashEntries() { 1181 void Instruction::clearMetadataHashEntries() {
1160 assert(hasMetadataHashEntry() && "Caller should check"); 1182 assert(hasMetadataHashEntry() && "Caller should check");
1161 getContext().pImpl->MetadataStore.erase(this); 1183 getContext().pImpl->InstructionMetadata.erase(this);
1162 setHasMetadataHashEntry(false); 1184 setHasMetadataHashEntry(false);
1163 } 1185 }
1186
1187 MDNode *Function::getMetadata(unsigned KindID) const {
1188 if (!hasMetadata())
1189 return nullptr;
1190 return getContext().pImpl->FunctionMetadata[this].lookup(KindID);
1191 }
1192
1193 MDNode *Function::getMetadata(StringRef Kind) const {
1194 if (!hasMetadata())
1195 return nullptr;
1196 return getMetadata(getContext().getMDKindID(Kind));
1197 }
1198
1199 void Function::setMetadata(unsigned KindID, MDNode *MD) {
1200 if (MD) {
1201 if (!hasMetadata())
1202 setHasMetadataHashEntry(true);
1203
1204 getContext().pImpl->FunctionMetadata[this].set(KindID, *MD);
1205 return;
1206 }
1207
1208 // Nothing to unset.
1209 if (!hasMetadata())
1210 return;
1211
1212 auto &Store = getContext().pImpl->FunctionMetadata[this];
1213 Store.erase(KindID);
1214 if (Store.empty())
1215 clearMetadata();
1216 }
1217
1218 void Function::setMetadata(StringRef Kind, MDNode *MD) {
1219 if (!MD && !hasMetadata())
1220 return;
1221 setMetadata(getContext().getMDKindID(Kind), MD);
1222 }
1223
1224 void Function::getAllMetadata(
1225 SmallVectorImpl<std::pair<unsigned, MDNode *>> &MDs) const {
1226 MDs.clear();
1227
1228 if (!hasMetadata())
1229 return;
1230
1231 getContext().pImpl->FunctionMetadata[this].getAll(MDs);
1232 }
1233
1234 void Function::dropUnknownMetadata(ArrayRef<unsigned> KnownIDs) {
1235 if (!hasMetadata())
1236 return;
1237 if (KnownIDs.empty()) {
1238 clearMetadata();
1239 return;
1240 }
1241
1242 SmallSet<unsigned, 5> KnownSet;
1243 KnownSet.insert(KnownIDs.begin(), KnownIDs.end());
1244
1245 auto &Store = getContext().pImpl->FunctionMetadata[this];
1246 assert(!Store.empty());
1247
1248 Store.remove_if([&KnownSet](const std::pair<unsigned, TrackingMDNodeRef> &I) {
1249 return !KnownSet.count(I.first);
1250 });
1251
1252 if (Store.empty())
1253 clearMetadata();
1254 }
1255
1256 void Function::clearMetadata() {
1257 if (!hasMetadata())
1258 return;
1259 getContext().pImpl->FunctionMetadata.erase(this);
1260 setHasMetadataHashEntry(false);
1261 }
1262
1263 void Function::setSubprogram(DISubprogram *SP) {
1264 setMetadata(LLVMContext::MD_dbg, SP);
1265 }
1266
1267 DISubprogram *Function::getSubprogram() const {
1268 return cast_or_null<DISubprogram>(getMetadata(LLVMContext::MD_dbg));
1269 }