MDString(const MDString &); // DO NOT IMPLEMENT
StringRef Str;
-protected:
explicit MDString(LLVMContext &C, StringRef S);
public:
void replaceOperand(MDNodeOperand *Op, Value *NewVal);
~MDNode();
-protected:
- explicit MDNode(LLVMContext &C, Value *const *Vals, unsigned NumVals,
- bool isFunctionLocal);
+ MDNode(LLVMContext &C, Value *const *Vals, unsigned NumVals,
+ bool isFunctionLocal);
static MDNode *getMDNode(LLVMContext &C, Value *const *Vals, unsigned NumVals,
FunctionLocalness FL, bool Insert = true);
static MDNode *getIfExists(LLVMContext &Context, Value *const *Vals,
unsigned NumVals);
+
+ /// getTemporary - Return a temporary MDNode, for use in constructing
+ /// cyclic MDNode structures. A temporary MDNode is not uniqued,
+ /// may be RAUW'd, and must be manually deleted with deleteTemporary.
+ static MDNode *getTemporary(LLVMContext &Context, Value *const *Vals,
+ unsigned NumVals);
+
+ /// deleteTemporary - Deallocate a node created by getTemporary. The
+ /// node must not have any users.
+ static void deleteTemporary(MDNode *N);
/// getOperand - Return specified operand.
Value *getOperand(unsigned i) const;
unsigned getNumOperands() const { return NumOperands; }
/// isFunctionLocal - Return whether MDNode is local to a function.
- /// Note: MDNodes are designated as function-local when created, and keep
- /// that designation even if their operands are modified to no longer
- /// refer to function-local IR.
bool isFunctionLocal() const {
return (getSubclassDataFromValue() & FunctionLocalBit) != 0;
}
};
//===----------------------------------------------------------------------===//
-/// NamedMDNode - a tuple of MDNodes.
-/// NamedMDNode is always named. All NamedMDNode operand has a type of metadata.
+/// NamedMDNode - a tuple of MDNodes. Despite its name, a NamedMDNode isn't
+/// itself an MDNode. NamedMDNodes belong to modules, have names, and contain
+/// lists of MDNodes.
class NamedMDNode : public ilist_node<NamedMDNode> {
friend class SymbolTableListTraits<NamedMDNode, Module>;
friend struct ilist_traits<NamedMDNode>;
void setParent(Module *M) { Parent = M; }
-protected:
explicit NamedMDNode(const Twine &N);
public: