//
MDString::MDString(LLVMContext &C, StringRef S)
- : MetadataBase(Type::getMetadataTy(C), Value::MDStringVal), Str(S) {}
+ : Value(Type::getMetadataTy(C), Value::MDStringVal), Str(S) {}
MDString *MDString::get(LLVMContext &Context, StringRef Str) {
LLVMContextImpl *pImpl = Context.pImpl;
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;
-}
-
//===----------------------------------------------------------------------===//
// MDNodeOperand implementation.
//
MDNode::MDNode(LLVMContext &C, Value *const *Vals, unsigned NumVals,
bool isFunctionLocal)
-: MetadataBase(Type::getMetadataTy(C), Value::MDNodeVal) {
+: Value(Type::getMetadataTy(C), Value::MDNodeVal) {
NumOperands = NumVals;
if (isFunctionLocal)
MDNode::~MDNode() {
assert((getSubclassDataFromValue() & DestroyFlag) != 0 &&
"Not being destroyed through destroy()?");
- if (!isNotUniqued()) {
- LLVMContextImpl *pImpl = getType()->getContext().pImpl;
+ LLVMContextImpl *pImpl = getType()->getContext().pImpl;
+ if (isNotUniqued()) {
+ pImpl->NonUniquedMDNodes.erase(this);
+ } else {
pImpl->MDNodeSet.RemoveNode(this);
}
}
static const Function *getFunctionForValue(Value *V) {
- assert(!isa<MDNode>(V) && "does not iterate over metadata operands");
if (!V) return NULL;
- if (Instruction *I = dyn_cast<Instruction>(V))
- return I->getParent()->getParent();
- if (BasicBlock *BB = dyn_cast<BasicBlock>(V)) return BB->getParent();
- if (Argument *A = dyn_cast<Argument>(V)) return A->getParent();
+ if (Instruction *I = dyn_cast<Instruction>(V)) {
+ BasicBlock *BB = I->getParent();
+ return BB ? BB->getParent() : 0;
+ }
+ if (Argument *A = dyn_cast<Argument>(V))
+ return A->getParent();
+ if (BasicBlock *BB = dyn_cast<BasicBlock>(V))
+ return BB->getParent();
+ if (MDNode *MD = dyn_cast<MDNode>(V))
+ return MD->getFunction();
return NULL;
}
#ifndef NDEBUG
static const Function *assertLocalFunction(const MDNode *N) {
- if (!N->isFunctionLocal()) return NULL;
+ if (!N->isFunctionLocal()) return 0;
- const Function *F = NULL, *NewF = NULL;
+ // FIXME: This does not handle cyclic function local metadata.
+ const Function *F = 0, *NewF = 0;
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
if (Value *V = N->getOperand(i)) {
- if (MDNode *MD = dyn_cast<MDNode>(V)) NewF = assertLocalFunction(MD);
- else NewF = getFunctionForValue(V);
+ if (MDNode *MD = dyn_cast<MDNode>(V))
+ NewF = assertLocalFunction(MD);
+ else
+ NewF = getFunctionForValue(V);
}
- if (F && NewF) assert(F == NewF && "inconsistent function-local metadata");
- else if (!F) F = NewF;
+ if (F == 0)
+ F = NewF;
+ else
+ assert((NewF == 0 || F == NewF) &&"inconsistent function-local metadata");
}
return F;
}
return assertLocalFunction(this);
#endif
if (!isFunctionLocal()) return NULL;
-
- for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
- if (Value *V = getOperand(i)) {
- if (MDNode *MD = dyn_cast<MDNode>(V)) {
- if (const Function *F = MD->getFunction()) return F;
- } else {
- return getFunctionForValue(V);
- }
- }
- }
+ for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
+ if (const Function *F = getFunctionForValue(getOperand(i)))
+ return F;
return NULL;
}
free(this);
}
+/// isFunctionLocalValue - Return true if this is a value that would require a
+/// function-local MDNode.
+static bool isFunctionLocalValue(Value *V) {
+ return isa<Instruction>(V) || isa<Argument>(V) || isa<BasicBlock>(V) ||
+ (isa<MDNode>(V) && cast<MDNode>(V)->isFunctionLocal());
+}
+
MDNode *MDNode::getMDNode(LLVMContext &Context, Value *const *Vals,
- unsigned NumVals, FunctionLocalness FL) {
+ unsigned NumVals, FunctionLocalness FL,
+ bool Insert) {
LLVMContextImpl *pImpl = Context.pImpl;
+ bool isFunctionLocal = false;
+ switch (FL) {
+ case FL_Unknown:
+ for (unsigned i = 0; i != NumVals; ++i) {
+ Value *V = Vals[i];
+ if (!V) continue;
+ if (isFunctionLocalValue(V)) {
+ isFunctionLocal = true;
+ break;
+ }
+ }
+ break;
+ case FL_No:
+ isFunctionLocal = false;
+ break;
+ case FL_Yes:
+ isFunctionLocal = true;
+ break;
+ }
+
FoldingSetNodeID ID;
for (unsigned i = 0; i != NumVals; ++i)
ID.AddPointer(Vals[i]);
+ ID.AddBoolean(isFunctionLocal);
void *InsertPoint;
- MDNode *N = pImpl->MDNodeSet.FindNodeOrInsertPos(ID, InsertPoint);
- if (!N) {
- bool isFunctionLocal = false;
- switch (FL) {
- case FL_Unknown:
- for (unsigned i = 0; i != NumVals; ++i) {
- Value *V = Vals[i];
- if (!V) continue;
- if (isa<Instruction>(V) || isa<Argument>(V) || isa<BasicBlock>(V) ||
- (isa<MDNode>(V) && cast<MDNode>(V)->isFunctionLocal())) {
- isFunctionLocal = true;
- break;
- }
- }
- break;
- case FL_No:
- isFunctionLocal = false;
- break;
- case FL_Yes:
- isFunctionLocal = true;
- break;
- }
+ MDNode *N = NULL;
+
+ if ((N = pImpl->MDNodeSet.FindNodeOrInsertPos(ID, InsertPoint)))
+ return N;
+
+ if (!Insert)
+ return NULL;
+
+ // Coallocate space for the node and Operands together, then placement new.
+ void *Ptr = malloc(sizeof(MDNode)+NumVals*sizeof(MDNodeOperand));
+ N = new (Ptr) MDNode(Context, Vals, NumVals, isFunctionLocal);
- // Coallocate space for the node and Operands together, then placement new.
- void *Ptr = malloc(sizeof(MDNode)+NumVals*sizeof(MDNodeOperand));
- N = new (Ptr) MDNode(Context, Vals, NumVals, isFunctionLocal);
+ // InsertPoint will have been set by the FindNodeOrInsertPos call.
+ pImpl->MDNodeSet.InsertNode(N, InsertPoint);
- // InsertPoint will have been set by the FindNodeOrInsertPos call.
- pImpl->MDNodeSet.InsertNode(N, InsertPoint);
- }
return N;
}
return getMDNode(Context, Vals, NumVals, FL_Unknown);
}
-MDNode *MDNode::getWhenValsUnresolved(LLVMContext &Context, Value*const* Vals,
+MDNode *MDNode::getWhenValsUnresolved(LLVMContext &Context, Value *const *Vals,
unsigned NumVals, bool isFunctionLocal) {
return getMDNode(Context, Vals, NumVals, isFunctionLocal ? FL_Yes : FL_No);
}
+MDNode *MDNode::getIfExists(LLVMContext &Context, Value *const *Vals,
+ unsigned NumVals) {
+ return getMDNode(Context, Vals, NumVals, FL_Unknown, false);
+}
+
/// getOperand - Return specified operand.
Value *MDNode::getOperand(unsigned i) const {
return *getOperandPtr(const_cast<MDNode*>(this), i);
void MDNode::Profile(FoldingSetNodeID &ID) const {
for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
ID.AddPointer(getOperand(i));
+ ID.AddBoolean(isFunctionLocal());
}
+void MDNode::setIsNotUniqued() {
+ setValueSubclassData(getSubclassDataFromValue() | NotUniquedBit);
+ LLVMContextImpl *pImpl = getType()->getContext().pImpl;
+ pImpl->NonUniquedMDNodes.insert(this);
+}
// Replace value from this node's operand list.
void MDNode::replaceOperand(MDNodeOperand *Op, Value *To) {
Value *From = *Op;
+ // If is possible that someone did GV->RAUW(inst), replacing a global variable
+ // with an instruction or some other function-local object. If this is a
+ // non-function-local MDNode, it can't point to a function-local object.
+ // Handle this case by implicitly dropping the MDNode reference to null.
+ // Likewise if the MDNode is function-local but for a different function.
+ if (To && isFunctionLocalValue(To)) {
+ if (!isFunctionLocal())
+ To = 0;
+ else {
+ const Function *F = getFunction();
+ const Function *FV = getFunctionForValue(To);
+ // Metadata can be function-local without having an associated function.
+ // So only consider functions to have changed if non-null.
+ if (F && FV && F != FV)
+ To = 0;
+ }
+ }
+
if (From == To)
return;
return StringRef(Name);
}
-//===----------------------------------------------------------------------===//
-// LLVMContext MDKind naming implementation.
-//
-
-#ifndef NDEBUG
-/// isValidName - Return true if Name is a valid custom metadata handler name.
-static bool 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;
-}
-#endif
-
-/// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
-unsigned LLVMContext::getMDKindID(StringRef Name) const {
- assert(isValidName(Name) && "Invalid MDNode name");
-
- unsigned &Entry = pImpl->CustomMDKindNames[Name];
-
- // If this is new, assign it its ID.
- if (Entry == 0) Entry = pImpl->CustomMDKindNames.size();
- return Entry;
-}
-
-/// getHandlerNames - Populate client supplied smallvector using custome
-/// metadata name and ID.
-void LLVMContext::getMDKindNames(SmallVectorImpl<StringRef> &Names) const {
- Names.resize(pImpl->CustomMDKindNames.size()+1);
- Names[0] = "";
- for (StringMap<unsigned>::const_iterator I = pImpl->CustomMDKindNames.begin(),
- E = pImpl->CustomMDKindNames.end(); I != E; ++I)
- // MD Handlers are numbered from 1.
- Names[I->second] = I->first();
-}
-
//===----------------------------------------------------------------------===//
// Instruction Metadata method implementations.
//
return getMetadataImpl(getContext().getMDKindID(Kind));
}
+void Instruction::setDbgMetadata(MDNode *Node) {
+ DbgLoc = DebugLoc::getFromDILocation(Node);
+}
+
/// setMetadata - Set the metadata of of the specified kind to the specified
/// node. This updates/replaces metadata if already present, or removes it if
/// Node is null.
void Instruction::setMetadata(unsigned KindID, MDNode *Node) {
if (Node == 0 && !hasMetadata()) return;
+ // Handle 'dbg' as a special case since it is not stored in the hash table.
+ if (KindID == LLVMContext::MD_dbg) {
+ DbgLoc = DebugLoc::getFromDILocation(Node);
+ return;
+ }
+
// Handle the case when we're adding/updating metadata on an instruction.
if (Node) {
LLVMContextImpl::MDMapTy &Info = getContext().pImpl->MetadataStore[this];
- assert(!Info.empty() == hasMetadata() && "HasMetadata bit is wonked");
+ assert(!Info.empty() == hasMetadataHashEntry() &&
+ "HasMetadata bit is wonked");
if (Info.empty()) {
- setHasMetadata(true);
+ setHasMetadataHashEntry(true);
} else {
// Handle replacement of an existing value.
for (unsigned i = 0, e = Info.size(); i != e; ++i)
}
// Otherwise, we're removing metadata from an instruction.
- assert(hasMetadata() && getContext().pImpl->MetadataStore.count(this) &&
+ assert(hasMetadataHashEntry() &&
+ getContext().pImpl->MetadataStore.count(this) &&
"HasMetadata bit out of date!");
LLVMContextImpl::MDMapTy &Info = getContext().pImpl->MetadataStore[this];
// Common case is removing the only entry.
if (Info.size() == 1 && Info[0].first == KindID) {
getContext().pImpl->MetadataStore.erase(this);
- setHasMetadata(false);
+ setHasMetadataHashEntry(false);
return;
}
- // Handle replacement of an existing value.
+ // Handle removal of an existing value.
for (unsigned i = 0, e = Info.size(); i != e; ++i)
if (Info[i].first == KindID) {
Info[i] = Info.back();
}
MDNode *Instruction::getMetadataImpl(unsigned KindID) const {
+ // Handle 'dbg' as a special case since it is not stored in the hash table.
+ if (KindID == LLVMContext::MD_dbg)
+ return DbgLoc.getAsMDNode(getContext());
+
+ if (!hasMetadataHashEntry()) return 0;
+
LLVMContextImpl::MDMapTy &Info = getContext().pImpl->MetadataStore[this];
- assert(hasMetadata() && !Info.empty() && "Shouldn't have called this");
+ assert(!Info.empty() && "bit out of sync with hash table");
for (LLVMContextImpl::MDMapTy::iterator I = Info.begin(), E = Info.end();
I != E; ++I)
}
void Instruction::getAllMetadataImpl(SmallVectorImpl<std::pair<unsigned,
- MDNode*> > &Result)const {
- assert(hasMetadata() && getContext().pImpl->MetadataStore.count(this) &&
+ MDNode*> > &Result) const {
+ Result.clear();
+
+ // Handle 'dbg' as a special case since it is not stored in the hash table.
+ if (!DbgLoc.isUnknown()) {
+ Result.push_back(std::make_pair((unsigned)LLVMContext::MD_dbg,
+ DbgLoc.getAsMDNode(getContext())));
+ if (!hasMetadataHashEntry()) return;
+ }
+
+ assert(hasMetadataHashEntry() &&
+ getContext().pImpl->MetadataStore.count(this) &&
"Shouldn't have called this");
const LLVMContextImpl::MDMapTy &Info =
getContext().pImpl->MetadataStore.find(this)->second;
assert(!Info.empty() && "Shouldn't have called this");
- Result.clear();
Result.append(Info.begin(), Info.end());
// Sort the resulting array so it is stable.
array_pod_sort(Result.begin(), Result.end());
}
+void Instruction::
+getAllMetadataOtherThanDebugLocImpl(SmallVectorImpl<std::pair<unsigned,
+ MDNode*> > &Result) const {
+ Result.clear();
+ assert(hasMetadataHashEntry() &&
+ getContext().pImpl->MetadataStore.count(this) &&
+ "Shouldn't have called this");
+ const LLVMContextImpl::MDMapTy &Info =
+ getContext().pImpl->MetadataStore.find(this)->second;
+ assert(!Info.empty() && "Shouldn't have called this");
+
+ Result.append(Info.begin(), Info.end());
+
+ // Sort the resulting array so it is stable.
+ if (Result.size() > 1)
+ array_pod_sort(Result.begin(), Result.end());
+}
+
+
/// removeAllMetadata - Remove all metadata from this instruction.
void Instruction::removeAllMetadata() {
assert(hasMetadata() && "Caller should check");
- getContext().pImpl->MetadataStore.erase(this);
- setHasMetadata(false);
+ DbgLoc = DebugLoc();
+ if (hasMetadataHashEntry()) {
+ getContext().pImpl->MetadataStore.erase(this);
+ setHasMetadataHashEntry(false);
+ }
}