//
//===----------------------------------------------------------------------===//
-#include "LLVMContextImpl.h"
#include "llvm/Metadata.h"
+#include "LLVMContextImpl.h"
#include "llvm/LLVMContext.h"
#include "llvm/Module.h"
#include "llvm/Instruction.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/StringMap.h"
#include "SymbolTableListTraitsImpl.h"
+#include "llvm/Support/ValueHandle.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// MDString implementation.
//
+
+MDString::MDString(LLVMContext &C, StringRef S)
+ : MetadataBase(Type::getMetadataTy(C), Value::MDStringVal), Str(S) {}
+
MDString *MDString::get(LLVMContext &Context, StringRef Str) {
LLVMContextImpl *pImpl = Context.pImpl;
StringMapEntry<MDString *> &Entry =
pImpl->MDStringCache.GetOrCreateValue(Str);
MDString *&S = Entry.getValue();
- if (S) return S;
+ if (!S) S = new MDString(Context, Entry.getKey());
+ return S;
+}
+
+MDString *MDString::get(LLVMContext &Context, const char *Str) {
+ LLVMContextImpl *pImpl = Context.pImpl;
+ StringMapEntry<MDString *> &Entry =
+ pImpl->MDStringCache.GetOrCreateValue(Str ? StringRef(Str) : StringRef());
+ MDString *&S = Entry.getValue();
+ if (!S) S = new MDString(Context, Entry.getKey());
+ return S;
+}
+
+//===----------------------------------------------------------------------===//
+// MDNodeElement implementation.
+//
+
+// Use CallbackVH to hold MDNode elements.
+namespace llvm {
+class MDNodeElement : public CallbackVH {
+ MDNode *Parent;
+public:
+ MDNodeElement() {}
+ MDNodeElement(Value *V, MDNode *P) : CallbackVH(V), Parent(P) {}
+ ~MDNodeElement() {}
- return S =
- new MDString(Context, Entry.getKey());
+ virtual void deleted();
+ virtual void allUsesReplacedWith(Value *NV);
+};
+} // end namespace llvm.
+
+
+void MDNodeElement::deleted() {
+ Parent->replaceElement(this->operator Value*(), 0);
}
+void MDNodeElement::allUsesReplacedWith(Value *NV) {
+ Parent->replaceElement(this->operator Value*(), NV);
+}
+
+
+
//===----------------------------------------------------------------------===//
// MDNode implementation.
//
-MDNode::MDNode(LLVMContext &C, Value *const *Vals, unsigned NumVals)
+
+MDNode::MDNode(LLVMContext &C, Value *const *Vals, unsigned NumVals,
+ bool isFunctionLocal)
: MetadataBase(Type::getMetadataTy(C), Value::MDNodeVal) {
NodeSize = NumVals;
- Node = new ElementVH[NodeSize];
- ElementVH *Ptr = Node;
+ Node = new MDNodeElement[NodeSize];
+ MDNodeElement *Ptr = Node;
for (unsigned i = 0; i != NumVals; ++i)
- *Ptr++ = ElementVH(Vals[i], this);
+ *Ptr++ = MDNodeElement(Vals[i], this);
+ if (isFunctionLocal)
+ SubclassData |= FunctionLocalBit;
}
void MDNode::Profile(FoldingSetNodeID &ID) const {
ID.AddPointer(getElement(i));
}
-MDNode *MDNode::get(LLVMContext &Context, Value*const* Vals, unsigned NumVals) {
+MDNode *MDNode::get(LLVMContext &Context, Value*const* Vals, unsigned NumVals,
+ bool isFunctionLocal) {
LLVMContextImpl *pImpl = Context.pImpl;
FoldingSetNodeID ID;
for (unsigned i = 0; i != NumVals; ++i)
ID.AddPointer(Vals[i]);
void *InsertPoint;
- MDNode *N;
- {
- N = pImpl->MDNodeSet.FindNodeOrInsertPos(ID, InsertPoint);
- }
- if (N) return N;
-
- N = pImpl->MDNodeSet.FindNodeOrInsertPos(ID, InsertPoint);
+ MDNode *N = pImpl->MDNodeSet.FindNodeOrInsertPos(ID, InsertPoint);
if (!N) {
// InsertPoint will have been set by the FindNodeOrInsertPos call.
- N = new MDNode(Context, Vals, NumVals);
+ N = new MDNode(Context, Vals, NumVals, isFunctionLocal);
pImpl->MDNodeSet.InsertNode(N, InsertPoint);
}
-
return N;
}
/// ~MDNode - Destroy MDNode.
MDNode::~MDNode() {
- {
- LLVMContextImpl *pImpl = getType()->getContext().pImpl;
- pImpl->MDNodeSet.RemoveNode(this);
- }
+ LLVMContextImpl *pImpl = getType()->getContext().pImpl;
+ pImpl->MDNodeSet.RemoveNode(this);
delete [] Node;
Node = NULL;
}
+/// getElement - Return specified element.
+Value *MDNode::getElement(unsigned i) const {
+ assert(i < getNumElements() && "Invalid element number!");
+ return Node[i];
+}
+
+
+
// Replace value from this node's element list.
void MDNode::replaceElement(Value *From, Value *To) {
if (From == To || !getType())
for (SmallVector<unsigned, 4>::iterator I = Indexes.begin(), E = Indexes.end();
I != E; ++I) {
unsigned Index = *I;
- Node[Index] = ElementVH(To, this);
+ Node[Index] = MDNodeElement(To, this);
}
// Insert updated "this" into the context's folding node set.
}
}
+// getLocalFunction - Return false if MDNode's recursive function-localness is
+// invalid (local to more than one function). Return true otherwise. If MDNode
+// has one function to which it is local, set LocalFunction to that function.
+bool MDNode::getLocalFunction(Function *LocalFunction,
+ SmallPtrSet<MDNode *, 32> *VisitedMDNodes) {
+ if (!isFunctionLocal())
+ return true;
+
+ if (!VisitedMDNodes)
+ VisitedMDNodes = new SmallPtrSet<MDNode *, 32>();
+
+ if (!VisitedMDNodes->insert(this))
+ // MDNode has already been visited, nothing to do.
+ return true;
+
+ for (unsigned i = 0, e = getNumElements(); i != e; ++i) {
+ Value *V = getElement(i);
+ if (!V) continue;
+
+ Function *LocalFunctionTemp = NULL;
+ if (Instruction *I = dyn_cast<Instruction>(V))
+ LocalFunctionTemp = I->getParent()->getParent();
+ else if (MDNode *MD = dyn_cast<MDNode>(V))
+ if (!MD->getLocalFunction(LocalFunctionTemp, VisitedMDNodes))
+ // This MDNode's operand is function-locally invalid or local to a
+ // different function.
+ return false;
+
+ if (LocalFunctionTemp) {
+ if (!LocalFunction)
+ LocalFunction = LocalFunctionTemp;
+ else if (LocalFunction != LocalFunctionTemp)
+ // This MDNode contains operands that are local to different functions.
+ return false;
+ }
+ }
+
+ return true;
+}
+
//===----------------------------------------------------------------------===//
// NamedMDNode implementation.
//
+static SmallVector<TrackingVH<MetadataBase>, 4> &getNMDOps(void *Operands) {
+ return *(SmallVector<TrackingVH<MetadataBase>, 4>*)Operands;
+}
+
NamedMDNode::NamedMDNode(LLVMContext &C, const Twine &N,
MetadataBase *const *MDs,
unsigned NumMDs, Module *ParentModule)
: MetadataBase(Type::getMetadataTy(C), Value::NamedMDNodeVal), Parent(0) {
setName(N);
-
+
+ Operands = new SmallVector<TrackingVH<MetadataBase>, 4>();
+
+ SmallVector<TrackingVH<MetadataBase>, 4> &Node = getNMDOps(Operands);
for (unsigned i = 0; i != NumMDs; ++i)
Node.push_back(TrackingVH<MetadataBase>(MDs[i]));
NamedMDNode *NamedMDNode::Create(const NamedMDNode *NMD, Module *M) {
assert(NMD && "Invalid source NamedMDNode!");
SmallVector<MetadataBase *, 4> Elems;
+ Elems.reserve(NMD->getNumElements());
+
for (unsigned i = 0, e = NMD->getNumElements(); i != e; ++i)
Elems.push_back(NMD->getElement(i));
return new NamedMDNode(NMD->getContext(), NMD->getName().data(),
Elems.data(), Elems.size(), M);
}
+NamedMDNode::~NamedMDNode() {
+ dropAllReferences();
+ delete &getNMDOps(Operands);
+}
+
+/// getNumElements - Return number of NamedMDNode elements.
+unsigned NamedMDNode::getNumElements() const {
+ return (unsigned)getNMDOps(Operands).size();
+}
+
+/// getElement - Return specified element.
+MetadataBase *NamedMDNode::getElement(unsigned i) const {
+ assert(i < getNumElements() && "Invalid element number!");
+ return getNMDOps(Operands)[i];
+}
+
+/// addElement - Add metadata element.
+void NamedMDNode::addElement(MetadataBase *M) {
+ getNMDOps(Operands).push_back(TrackingVH<MetadataBase>(M));
+}
+
/// eraseFromParent - Drop all references and remove the node from parent
/// module.
void NamedMDNode::eraseFromParent() {
/// dropAllReferences - Remove all uses and clear node vector.
void NamedMDNode::dropAllReferences() {
- Node.clear();
+ getNMDOps(Operands).clear();
}
-NamedMDNode::~NamedMDNode() {
- dropAllReferences();
-}
//===----------------------------------------------------------------------===//
-// MetadataContext implementation.
+// MetadataContextImpl implementation.
//
+namespace llvm {
+class MetadataContextImpl {
+public:
+ typedef std::pair<unsigned, TrackingVH<MDNode> > MDPairTy;
+ typedef SmallVector<MDPairTy, 2> MDMapTy;
+ typedef DenseMap<const Instruction *, MDMapTy> MDStoreTy;
+ friend class BitcodeReader;
+private:
+
+ /// MetadataStore - Collection of metadata used in this context.
+ MDStoreTy MetadataStore;
+
+ /// MDHandlerNames - Map to hold metadata handler names.
+ StringMap<unsigned> MDHandlerNames;
+
+public:
+ /// registerMDKind - Register a new metadata kind and return its ID.
+ /// A metadata kind can be registered only once.
+ unsigned registerMDKind(StringRef Name);
+
+ /// getMDKind - Return metadata kind. If the requested metadata kind
+ /// is not registered then return 0.
+ unsigned getMDKind(StringRef Name) const;
+
+ /// getMD - Get the metadata of given kind attached to an Instruction.
+ /// If the metadata is not found then return 0.
+ MDNode *getMD(unsigned Kind, const Instruction *Inst);
+
+ /// getMDs - Get the metadata attached to an Instruction.
+ void getMDs(const Instruction *Inst,
+ SmallVectorImpl<std::pair<unsigned, MDNode*> > &MDs) const;
+
+ /// addMD - Attach the metadata of given kind to an Instruction.
+ void addMD(unsigned Kind, MDNode *Node, Instruction *Inst);
+
+ /// removeMD - Remove metadata of given kind attached with an instruction.
+ void removeMD(unsigned Kind, Instruction *Inst);
+
+ /// removeAllMetadata - Remove all metadata attached with an instruction.
+ void removeAllMetadata(Instruction *Inst);
+
+ /// copyMD - If metadata is attached with Instruction In1 then attach
+ /// the same metadata to In2.
+ void copyMD(Instruction *In1, Instruction *In2);
+
+ /// getHandlerNames - Populate client-supplied smallvector using custom
+ /// metadata name and ID.
+ void getHandlerNames(SmallVectorImpl<std::pair<unsigned, StringRef> >&) const;
+
+ /// ValueIsDeleted - This handler is used to update metadata store
+ /// when a value is deleted.
+ void ValueIsDeleted(const Value *) {}
+ void ValueIsDeleted(Instruction *Inst) {
+ removeAllMetadata(Inst);
+ }
+ void ValueIsRAUWd(Value *V1, Value *V2);
+
+ /// ValueIsCloned - This handler is used to update metadata store
+ /// when In1 is cloned to create In2.
+ void ValueIsCloned(const Instruction *In1, Instruction *In2);
+};
+}
/// registerMDKind - Register a new metadata kind and return its ID.
/// A metadata kind can be registered only once.
-unsigned MetadataContext::registerMDKind(StringRef Name) {
- assert(isValidName(Name) && "Invalid custome metadata name!");
+unsigned MetadataContextImpl::registerMDKind(StringRef Name) {
unsigned Count = MDHandlerNames.size();
assert(MDHandlerNames.count(Name) == 0 && "Already registered MDKind!");
return MDHandlerNames[Name] = Count + 1;
}
-/// isValidName - Return true if Name is a valid custom metadata handler name.
-bool MetadataContext::isValidName(StringRef MDName) {
- if (MDName.empty())
- return false;
-
- if (!isalpha(MDName[0]))
- return false;
-
- for (StringRef::iterator I = MDName.begin() + 1, E = MDName.end(); I != E;
- ++I) {
- if (!isalnum(*I) && *I != '_' && *I != '-' && *I != '.')
- return false;
- }
- return true;
-}
-
/// getMDKind - Return metadata kind. If the requested metadata kind
/// is not registered then return 0.
-unsigned MetadataContext::getMDKind(StringRef Name) const {
+unsigned MetadataContextImpl::getMDKind(StringRef Name) const {
StringMap<unsigned>::const_iterator I = MDHandlerNames.find(Name);
- if (I == MDHandlerNames.end()) {
- assert(isValidName(Name) && "Invalid custome metadata name!");
+ if (I == MDHandlerNames.end())
return 0;
- }
return I->getValue();
}
/// addMD - Attach the metadata of given kind to an Instruction.
-void MetadataContext::addMD(unsigned MDKind, MDNode *Node, Instruction *Inst) {
+void MetadataContextImpl::addMD(unsigned MDKind, MDNode *Node,
+ Instruction *Inst) {
assert(Node && "Invalid null MDNode");
Inst->HasMetadata = true;
MDMapTy &Info = MetadataStore[Inst];
Info.push_back(std::make_pair(MDKind, Node));
}
-/// removeMD - Remove metadata of given kind attached with an instuction.
-void MetadataContext::removeMD(unsigned Kind, Instruction *Inst) {
+/// removeMD - Remove metadata of given kind attached with an instruction.
+void MetadataContextImpl::removeMD(unsigned Kind, Instruction *Inst) {
MDStoreTy::iterator I = MetadataStore.find(Inst);
if (I == MetadataStore.end())
return;
}
}
}
-
+
/// removeAllMetadata - Remove all metadata attached with an instruction.
-void MetadataContext::removeAllMetadata(Instruction *Inst) {
+void MetadataContextImpl::removeAllMetadata(Instruction *Inst) {
MetadataStore.erase(Inst);
Inst->HasMetadata = false;
}
/// copyMD - If metadata is attached with Instruction In1 then attach
/// the same metadata to In2.
-void MetadataContext::copyMD(Instruction *In1, Instruction *In2) {
+void MetadataContextImpl::copyMD(Instruction *In1, Instruction *In2) {
assert(In1 && In2 && "Invalid instruction!");
MDMapTy &In1Info = MetadataStore[In1];
if (In1Info.empty())
/// getMD - Get the metadata of given kind attached to an Instruction.
/// If the metadata is not found then return 0.
-MDNode *MetadataContext::getMD(unsigned MDKind, const Instruction *Inst) {
+MDNode *MetadataContextImpl::getMD(unsigned MDKind, const Instruction *Inst) {
MDMapTy &Info = MetadataStore[Inst];
if (Info.empty())
return NULL;
}
/// getMDs - Get the metadata attached to an Instruction.
-const MetadataContext::MDMapTy *
-MetadataContext::getMDs(const Instruction *Inst) {
- MDStoreTy::iterator I = MetadataStore.find(Inst);
+void MetadataContextImpl::
+getMDs(const Instruction *Inst,
+ SmallVectorImpl<std::pair<unsigned, MDNode*> > &MDs) const {
+ MDStoreTy::const_iterator I = MetadataStore.find(Inst);
if (I == MetadataStore.end())
- return NULL;
-
- return &I->second;
+ return;
+ MDs.resize(I->second.size());
+ for (MDMapTy::const_iterator MI = I->second.begin(), ME = I->second.end();
+ MI != ME; ++MI)
+ // MD kinds are numbered from 1.
+ MDs[MI->first - 1] = std::make_pair(MI->first, MI->second);
}
/// getHandlerNames - Populate client supplied smallvector using custome
/// metadata name and ID.
-void MetadataContext::
+void MetadataContextImpl::
getHandlerNames(SmallVectorImpl<std::pair<unsigned, StringRef> >&Names) const {
+ Names.resize(MDHandlerNames.size());
for (StringMap<unsigned>::const_iterator I = MDHandlerNames.begin(),
E = MDHandlerNames.end(); I != E; ++I)
- Names.push_back(std::make_pair(I->second, I->first()));
- std::sort(Names.begin(), Names.end());
+ // MD Handlers are numbered from 1.
+ Names[I->second - 1] = std::make_pair(I->second, I->first());
}
/// ValueIsCloned - This handler is used to update metadata store
/// when In1 is cloned to create In2.
-void MetadataContext::ValueIsCloned(const Instruction *In1, Instruction *In2) {
+void MetadataContextImpl::ValueIsCloned(const Instruction *In1,
+ Instruction *In2) {
// Find Metadata handles for In1.
MDStoreTy::iterator I = MetadataStore.find(In1);
assert(I != MetadataStore.end() && "Invalid custom metadata info!");
/// ValueIsRAUWd - This handler is used when V1's all uses are replaced by
/// V2.
-void MetadataContext::ValueIsRAUWd(Value *V1, Value *V2) {
+void MetadataContextImpl::ValueIsRAUWd(Value *V1, Value *V2) {
Instruction *I1 = dyn_cast<Instruction>(V1);
Instruction *I2 = dyn_cast<Instruction>(V2);
if (!I1 || !I2)
ValueIsCloned(I1, I2);
}
+//===----------------------------------------------------------------------===//
+// MetadataContext implementation.
+//
+MetadataContext::MetadataContext()
+ : pImpl(new MetadataContextImpl()) { }
+MetadataContext::~MetadataContext() { delete pImpl; }
+
+/// isValidName - Return true if Name is a valid custom metadata handler name.
+bool MetadataContext::isValidName(StringRef MDName) {
+ if (MDName.empty())
+ return false;
+
+ if (!isalpha(MDName[0]))
+ return false;
+
+ for (StringRef::iterator I = MDName.begin() + 1, E = MDName.end(); I != E;
+ ++I) {
+ if (!isalnum(*I) && *I != '_' && *I != '-' && *I != '.')
+ return false;
+ }
+ return true;
+}
+
+/// registerMDKind - Register a new metadata kind and return its ID.
+/// A metadata kind can be registered only once.
+unsigned MetadataContext::registerMDKind(StringRef Name) {
+ assert(isValidName(Name) && "Invalid custome metadata name!");
+ return pImpl->registerMDKind(Name);
+}
+
+/// getMDKind - Return metadata kind. If the requested metadata kind
+/// is not registered then return 0.
+unsigned MetadataContext::getMDKind(StringRef Name) const {
+ return pImpl->getMDKind(Name);
+}
+
+/// getMD - Get the metadata of given kind attached to an Instruction.
+/// If the metadata is not found then return 0.
+MDNode *MetadataContext::getMD(unsigned Kind, const Instruction *Inst) {
+ return pImpl->getMD(Kind, Inst);
+}
+
+/// getMDs - Get the metadata attached to an Instruction.
+void MetadataContext::
+getMDs(const Instruction *Inst,
+ SmallVectorImpl<std::pair<unsigned, MDNode*> > &MDs) const {
+ return pImpl->getMDs(Inst, MDs);
+}
+
+/// addMD - Attach the metadata of given kind to an Instruction.
+void MetadataContext::addMD(unsigned Kind, MDNode *Node, Instruction *Inst) {
+ pImpl->addMD(Kind, Node, Inst);
+}
+
+/// removeMD - Remove metadata of given kind attached with an instruction.
+void MetadataContext::removeMD(unsigned Kind, Instruction *Inst) {
+ pImpl->removeMD(Kind, Inst);
+}
+
+/// removeAllMetadata - Remove all metadata attached with an instruction.
+void MetadataContext::removeAllMetadata(Instruction *Inst) {
+ pImpl->removeAllMetadata(Inst);
+}
+
+/// copyMD - If metadata is attached with Instruction In1 then attach
+/// the same metadata to In2.
+void MetadataContext::copyMD(Instruction *In1, Instruction *In2) {
+ pImpl->copyMD(In1, In2);
+}
+
+/// getHandlerNames - Populate client supplied smallvector using custome
+/// metadata name and ID.
+void MetadataContext::
+getHandlerNames(SmallVectorImpl<std::pair<unsigned, StringRef> >&N) const {
+ pImpl->getHandlerNames(N);
+}
+
+/// ValueIsDeleted - This handler is used to update metadata store
+/// when a value is deleted.
+void MetadataContext::ValueIsDeleted(Instruction *Inst) {
+ pImpl->ValueIsDeleted(Inst);
+}
+void MetadataContext::ValueIsRAUWd(Value *V1, Value *V2) {
+ pImpl->ValueIsRAUWd(V1, V2);
+}
+
+/// ValueIsCloned - This handler is used to update metadata store
+/// when In1 is cloned to create In2.
+void MetadataContext::ValueIsCloned(const Instruction *In1, Instruction *In2) {
+ pImpl->ValueIsCloned(In1, In2);
+}
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