// MetadataBase implementation.
//
-/// resizeOperands - Metadata keeps track of other metadata uses using
-/// OperandList. Resize this list to hold anticipated number of metadata
-/// operands.
-void MetadataBase::resizeOperands(unsigned NumOps) {
- unsigned e = getNumOperands();
- if (NumOps == 0) {
- NumOps = e*2;
- if (NumOps < 2) NumOps = 2;
- } else if (NumOps > NumOperands) {
- // No resize needed.
- if (ReservedSpace >= NumOps) return;
- } else if (NumOps == NumOperands) {
- if (ReservedSpace == NumOps) return;
- } else {
- return;
- }
-
- ReservedSpace = NumOps;
- Use *OldOps = OperandList;
- Use *NewOps = allocHungoffUses(NumOps);
- std::copy(OldOps, OldOps + e, NewOps);
- OperandList = NewOps;
- if (OldOps) Use::zap(OldOps, OldOps + e, true);
-}
//===----------------------------------------------------------------------===//
// MDString implementation.
//
//
MDNode::MDNode(LLVMContext &C, Value *const *Vals, unsigned NumVals)
: MetadataBase(Type::getMetadataTy(C), Value::MDNodeVal) {
- NumOperands = 0;
- resizeOperands(NumVals);
NodeSize = NumVals;
Node = new ElementVH[NodeSize];
ElementVH *Ptr = Node;
- for (unsigned i = 0; i != NumVals; ++i) {
- // Only record metadata uses.
- if (MetadataBase *MB = dyn_cast_or_null<MetadataBase>(Vals[i]))
- OperandList[NumOperands++] = MB;
- else if(Vals[i] &&
- Vals[i]->getType()->getTypeID() == Type::MetadataTyID)
- OperandList[NumOperands++] = Vals[i];
+ for (unsigned i = 0; i != NumVals; ++i)
*Ptr++ = ElementVH(Vals[i], this);
- }
}
void MDNode::Profile(FoldingSetNodeID &ID) const {
return N;
}
-/// dropAllReferences - Remove all uses and clear node vector.
-void MDNode::dropAllReferences() {
- User::dropAllReferences();
- delete [] Node;
- Node = NULL;
-}
-
+/// ~MDNode - Destroy MDNode.
MDNode::~MDNode() {
{
LLVMContextImpl *pImpl = getType()->getContext().pImpl;
pImpl->MDNodeSet.RemoveNode(this);
}
- dropAllReferences();
+ delete [] Node;
+ Node = NULL;
}
// Replace value from this node's element list.
// Remove "this" from the context map.
pImpl->MDNodeSet.RemoveNode(this);
- // MDNode only lists metadata elements in operand list, because MDNode
- // used by MDNode is considered a valid use. However on the side, MDNode
- // using a non-metadata value is not considered a "use" of non-metadata
- // value.
- SmallVector<unsigned, 4> OpIndexes;
- unsigned OpIndex = 0;
- for (User::op_iterator OI = op_begin(), OE = op_end();
- OI != OE; ++OI, OpIndex++) {
- if (*OI == From)
- OpIndexes.push_back(OpIndex);
- }
- if (MetadataBase *MDTo = dyn_cast_or_null<MetadataBase>(To)) {
- for (SmallVector<unsigned, 4>::iterator OI = OpIndexes.begin(),
- OE = OpIndexes.end(); OI != OE; ++OI)
- setOperand(*OI, MDTo);
- } else {
- for (SmallVector<unsigned, 4>::iterator OI = OpIndexes.begin(),
- OE = OpIndexes.end(); OI != OE; ++OI)
- setOperand(*OI, 0);
- }
-
// Replace From element(s) in place.
for (SmallVector<unsigned, 4>::iterator I = Indexes.begin(), E = Indexes.end();
I != E; ++I) {
unsigned NumMDs, Module *ParentModule)
: MetadataBase(Type::getMetadataTy(C), Value::NamedMDNodeVal), Parent(0) {
setName(N);
- NumOperands = 0;
- resizeOperands(NumMDs);
- for (unsigned i = 0; i != NumMDs; ++i) {
- if (MDs[i])
- OperandList[NumOperands++] = MDs[i];
+ for (unsigned i = 0; i != NumMDs; ++i)
Node.push_back(WeakMetadataVH(MDs[i]));
- }
+
if (ParentModule)
ParentModule->getNamedMDList().push_back(this);
}
/// dropAllReferences - Remove all uses and clear node vector.
void NamedMDNode::dropAllReferences() {
- User::dropAllReferences();
Node.clear();
}