template <typename T> class SmallVectorImpl;
template<typename ValueSubClass, typename ItemParentClass>
class SymbolTableListTraits;
-
-
+
+
//===----------------------------------------------------------------------===//
/// MDString - a single uniqued string.
/// These are used to efficiently contain a byte sequence for metadata.
unsigned getLength() const { return (unsigned)getName().size(); }
typedef StringRef::iterator iterator;
-
+
/// begin() - Pointer to the first byte of the string.
iterator begin() const { return getName().begin(); }
}
};
-
+
class MDNodeOperand;
-
+
//===----------------------------------------------------------------------===//
/// MDNode - a tuple of other values.
class MDNode : public Value, public FoldingSetNode {
/// NumOperands - This many 'MDNodeOperand' items are co-allocated onto the
/// end of this MDNode.
unsigned NumOperands;
-
+
// Subclass data enums.
enum {
/// FunctionLocalBit - This bit is set if this MDNode is function local.
/// This is true when it (potentially transitively) contains a reference to
/// something in a function, like an argument, basicblock, or instruction.
FunctionLocalBit = 1 << 0,
-
+
/// NotUniquedBit - This is set on MDNodes that are not uniqued because they
/// have a null operand.
NotUniquedBit = 1 << 1,
-
+
/// DestroyFlag - This bit is set by destroy() so the destructor can assert
/// that the node isn't being destroyed with a plain 'delete'.
DestroyFlag = 1 << 2
};
-
+
// FunctionLocal enums.
enum FunctionLocalness {
FL_Unknown = -1,
FL_No = 0,
FL_Yes = 1
};
-
- /// replaceOperand - Replace each instance of F from the operand list of this
+
+ /// replaceOperand - Replace each instance of F from the operand list of this
/// node with T.
void replaceOperand(MDNodeOperand *Op, Value *NewVal);
~MDNode();
MDNode(LLVMContext &C, ArrayRef<Value*> Vals, bool isFunctionLocal);
-
+
static MDNode *getMDNode(LLVMContext &C, ArrayRef<Value*> Vals,
FunctionLocalness FL, bool Insert = true);
public:
static MDNode *getWhenValsUnresolved(LLVMContext &Context,
ArrayRef<Value*> Vals,
bool isFunctionLocal);
-
+
static MDNode *getIfExists(LLVMContext &Context, ArrayRef<Value*> Vals);
/// getTemporary - Return a temporary MDNode, for use in constructing
/// replaceOperandWith - Replace a specific operand.
void replaceOperandWith(unsigned i, Value *NewVal);
-
+
/// getOperand - Return specified operand.
Value *getOperand(unsigned i) const;
-
+
/// getNumOperands - Return number of MDNode operands.
unsigned getNumOperands() const { return NumOperands; }
-
+
/// isFunctionLocal - Return whether MDNode is local to a function.
bool isFunctionLocal() const {
return (getSubclassDataFromValue() & FunctionLocalBit) != 0;
}
-
+
// getFunction - If this metadata is function-local and recursively has a
// function-local operand, return the first such operand's parent function.
// Otherwise, return null. getFunction() should not be used for performance-
- // critical code because it recursively visits all the MDNode's operands.
+ // critical code because it recursively visits all the MDNode's operands.
const Function *getFunction() const;
/// Profile - calculate a unique identifier for this MDNode to collapse
// destroy - Delete this node. Only when there are no uses.
void destroy();
- bool isNotUniqued() const {
+ bool isNotUniqued() const {
return (getSubclassDataFromValue() & NotUniquedBit) != 0;
}
void setIsNotUniqued();
-
+
// Shadow Value::setValueSubclassData with a private forwarding method so that
// any future subclasses cannot accidentally use it.
void setValueSubclassData(unsigned short D) {
/// getOperand - Return specified operand.
MDNode *getOperand(unsigned i) const;
-
+
/// getNumOperands - Return the number of NamedMDNode operands.
unsigned getNumOperands() const;