mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2026-04-23 22:23:00 +00:00
Final step in the metadata API restructuring: move the
getMDKindID/getMDKindNames methods to LLVMContext (and add convenience methods to Module), eliminating MetadataContext. Move the state that it maintains out to LLVMContext. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92259 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
+79
-153
@@ -242,152 +242,9 @@ void NamedMDNode::dropAllReferences() {
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}
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//===----------------------------------------------------------------------===//
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// MetadataContextImpl implementation.
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//
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namespace llvm {
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class MetadataContextImpl {
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public:
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typedef std::pair<unsigned, TrackingVH<MDNode> > MDPairTy;
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typedef SmallVector<MDPairTy, 2> MDMapTy;
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typedef DenseMap<const Instruction *, MDMapTy> MDStoreTy;
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friend class BitcodeReader;
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private:
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/// MetadataStore - Collection of metadata used in this context.
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MDStoreTy MetadataStore;
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/// MDHandlerNames - Map to hold metadata handler names.
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StringMap<unsigned> MDHandlerNames;
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public:
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// Name <-> ID mapping methods.
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unsigned getMDKindID(StringRef Name);
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void getMDKindNames(SmallVectorImpl<StringRef> &) const;
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// Instruction metadata methods.
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MDNode *getMetadata(const Instruction *Inst, unsigned Kind);
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void getAllMetadata(const Instruction *Inst,
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SmallVectorImpl<std::pair<unsigned, MDNode*> > &MDs)const;
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void setMetadata(Instruction *Inst, unsigned Kind, MDNode *Node);
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/// removeAllMetadata - Remove all metadata attached to an instruction.
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void removeAllMetadata(Instruction *Inst);
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};
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}
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/// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
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unsigned MetadataContextImpl::getMDKindID(StringRef Name) {
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unsigned &Entry = MDHandlerNames[Name];
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// If this is new, assign it its ID.
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if (Entry == 0) Entry = MDHandlerNames.size();
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return Entry;
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}
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/// getHandlerNames - Populate client supplied smallvector using custome
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/// metadata name and ID.
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void MetadataContextImpl::
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getMDKindNames(SmallVectorImpl<StringRef> &Names) const {
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Names.resize(MDHandlerNames.size()+1);
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Names[0] = "";
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for (StringMap<unsigned>::const_iterator I = MDHandlerNames.begin(),
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E = MDHandlerNames.end(); I != E; ++I)
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// MD Handlers are numbered from 1.
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Names[I->second] = I->first();
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}
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/// getMetadata - Get the metadata of given kind attached to an Instruction.
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/// If the metadata is not found then return 0.
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MDNode *MetadataContextImpl::
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getMetadata(const Instruction *Inst, unsigned MDKind) {
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MDMapTy &Info = MetadataStore[Inst];
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assert(Inst->hasMetadata() && !Info.empty() && "Shouldn't have called this");
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for (MDMapTy::iterator I = Info.begin(), E = Info.end(); I != E; ++I)
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if (I->first == MDKind)
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return I->second;
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return 0;
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}
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/// getAllMetadata - Get all of the metadata attached to an Instruction.
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void MetadataContextImpl::
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getAllMetadata(const Instruction *Inst,
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SmallVectorImpl<std::pair<unsigned, MDNode*> > &Result) const {
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assert(Inst->hasMetadata() && MetadataStore.find(Inst) != MetadataStore.end()
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&& "Shouldn't have called this");
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const MDMapTy &Info = MetadataStore.find(Inst)->second;
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assert(!Info.empty() && "Shouldn't have called this");
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Result.clear();
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Result.append(Info.begin(), Info.end());
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// Sort the resulting array so it is stable.
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if (Result.size() > 1)
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array_pod_sort(Result.begin(), Result.end());
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}
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void MetadataContextImpl::setMetadata(Instruction *Inst, unsigned Kind,
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MDNode *Node) {
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// Handle the case when we're adding/updating metadata on an instruction.
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if (Node) {
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MDMapTy &Info = MetadataStore[Inst];
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assert(!Info.empty() == Inst->hasMetadata() && "HasMetadata bit is wonked");
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if (Info.empty()) {
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Inst->setHasMetadata(true);
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} else {
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// Handle replacement of an existing value.
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for (unsigned i = 0, e = Info.size(); i != e; ++i)
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if (Info[i].first == Kind) {
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Info[i].second = Node;
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return;
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}
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}
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// No replacement, just add it to the list.
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Info.push_back(std::make_pair(Kind, Node));
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return;
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}
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// Otherwise, we're removing metadata from an instruction.
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assert(Inst->hasMetadata() && MetadataStore.count(Inst) &&
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"HasMetadata bit out of date!");
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MDMapTy &Info = MetadataStore[Inst];
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// Common case is removing the only entry.
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if (Info.size() == 1 && Info[0].first == Kind) {
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MetadataStore.erase(Inst);
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Inst->setHasMetadata(false);
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return;
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}
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// Handle replacement of an existing value.
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for (unsigned i = 0, e = Info.size(); i != e; ++i)
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if (Info[i].first == Kind) {
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Info[i] = Info.back();
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Info.pop_back();
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assert(!Info.empty() && "Removing last entry should be handled above");
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return;
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}
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// Otherwise, removing an entry that doesn't exist on the instruction.
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}
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/// removeAllMetadata - Remove all metadata attached with an instruction.
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void MetadataContextImpl::removeAllMetadata(Instruction *Inst) {
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MetadataStore.erase(Inst);
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Inst->setHasMetadata(false);
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}
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//===----------------------------------------------------------------------===//
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// MetadataContext implementation.
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//
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MetadataContext::MetadataContext() : pImpl(new MetadataContextImpl()) { }
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MetadataContext::~MetadataContext() { delete pImpl; }
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#ifndef NDEBUG
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/// isValidName - Return true if Name is a valid custom metadata handler name.
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@@ -408,15 +265,25 @@ static bool isValidName(StringRef MDName) {
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#endif
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/// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
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unsigned MetadataContext::getMDKindID(StringRef Name) const {
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unsigned LLVMContext::getMDKindID(StringRef Name) const {
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assert(isValidName(Name) && "Invalid MDNode name");
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return pImpl->getMDKindID(Name);
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unsigned &Entry = pImpl->CustomMDKindNames[Name];
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// If this is new, assign it its ID.
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if (Entry == 0) Entry = pImpl->CustomMDKindNames.size();
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return Entry;
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}
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/// getHandlerNames - Populate client supplied smallvector using custome
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/// metadata name and ID.
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void MetadataContext::getMDKindNames(SmallVectorImpl<StringRef> &N) const {
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pImpl->getMDKindNames(N);
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void LLVMContext::getMDKindNames(SmallVectorImpl<StringRef> &Names) const {
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Names.resize(pImpl->CustomMDKindNames.size()+1);
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Names[0] = "";
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for (StringMap<unsigned>::const_iterator I = pImpl->CustomMDKindNames.begin(),
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E = pImpl->CustomMDKindNames.end(); I != E; ++I)
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// MD Handlers are numbered from 1.
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Names[I->second] = I->first();
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}
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//===----------------------------------------------------------------------===//
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@@ -425,11 +292,11 @@ void MetadataContext::getMDKindNames(SmallVectorImpl<StringRef> &N) const {
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void Instruction::setMetadata(const char *Kind, MDNode *Node) {
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if (Node == 0 && !hasMetadata()) return;
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setMetadata(getContext().getMetadata().getMDKindID(Kind), Node);
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setMetadata(getContext().getMDKindID(Kind), Node);
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}
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MDNode *Instruction::getMetadataImpl(const char *Kind) const {
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return getMetadataImpl(getContext().getMetadata().getMDKindID(Kind));
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return getMetadataImpl(getContext().getMDKindID(Kind));
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}
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/// setMetadata - Set the metadata of of the specified kind to the specified
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@@ -438,21 +305,80 @@ MDNode *Instruction::getMetadataImpl(const char *Kind) const {
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void Instruction::setMetadata(unsigned KindID, MDNode *Node) {
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if (Node == 0 && !hasMetadata()) return;
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getContext().getMetadata().pImpl->setMetadata(this, KindID, Node);
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// Handle the case when we're adding/updating metadata on an instruction.
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if (Node) {
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LLVMContextImpl::MDMapTy &Info = getContext().pImpl->MetadataStore[this];
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assert(!Info.empty() == hasMetadata() && "HasMetadata bit is wonked");
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if (Info.empty()) {
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setHasMetadata(true);
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} else {
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// Handle replacement of an existing value.
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for (unsigned i = 0, e = Info.size(); i != e; ++i)
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if (Info[i].first == KindID) {
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Info[i].second = Node;
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return;
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}
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}
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// No replacement, just add it to the list.
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Info.push_back(std::make_pair(KindID, Node));
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return;
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}
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// Otherwise, we're removing metadata from an instruction.
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assert(hasMetadata() && getContext().pImpl->MetadataStore.count(this) &&
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"HasMetadata bit out of date!");
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LLVMContextImpl::MDMapTy &Info = getContext().pImpl->MetadataStore[this];
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// Common case is removing the only entry.
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if (Info.size() == 1 && Info[0].first == KindID) {
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getContext().pImpl->MetadataStore.erase(this);
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setHasMetadata(false);
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return;
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}
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// Handle replacement of an existing value.
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for (unsigned i = 0, e = Info.size(); i != e; ++i)
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if (Info[i].first == KindID) {
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Info[i] = Info.back();
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Info.pop_back();
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assert(!Info.empty() && "Removing last entry should be handled above");
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return;
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}
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// Otherwise, removing an entry that doesn't exist on the instruction.
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}
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MDNode *Instruction::getMetadataImpl(unsigned KindID) const {
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return getContext().getMetadata().pImpl->getMetadata(this, KindID);
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LLVMContextImpl::MDMapTy &Info = getContext().pImpl->MetadataStore[this];
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assert(hasMetadata() && !Info.empty() && "Shouldn't have called this");
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for (LLVMContextImpl::MDMapTy::iterator I = Info.begin(), E = Info.end();
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I != E; ++I)
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if (I->first == KindID)
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return I->second;
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return 0;
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}
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void Instruction::getAllMetadataImpl(SmallVectorImpl<std::pair<unsigned,
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MDNode*> > &Result)const {
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getContext().getMetadata().pImpl->getAllMetadata(this, Result);
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assert(hasMetadata() && getContext().pImpl->MetadataStore.count(this) &&
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"Shouldn't have called this");
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const LLVMContextImpl::MDMapTy &Info =
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getContext().pImpl->MetadataStore.find(this)->second;
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assert(!Info.empty() && "Shouldn't have called this");
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Result.clear();
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Result.append(Info.begin(), Info.end());
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// Sort the resulting array so it is stable.
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if (Result.size() > 1)
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array_pod_sort(Result.begin(), Result.end());
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}
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/// removeAllMetadata - Remove all metadata from this instruction.
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void Instruction::removeAllMetadata() {
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assert(hasMetadata() && "Caller should check");
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getContext().getMetadata().pImpl->removeAllMetadata(this);
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getContext().pImpl->MetadataStore.erase(this);
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setHasMetadata(false);
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}
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