-struct MachineConstantPoolEntry {
- /// Val - The constant itself.
- Constant *Val;
- /// Offset - The offset of the constant from the start of the constant pool.
+class MachineConstantPoolValue {
+ const Type *Ty;
+
+public:
+ explicit MachineConstantPoolValue(const Type *ty) : Ty(ty) {}
+ virtual ~MachineConstantPoolValue() {}
+
+ /// getType - get type of this MachineConstantPoolValue.
+ ///
+ inline const Type *getType() const { return Ty; }
+
+ virtual int getExistingMachineCPValue(MachineConstantPool *CP,
+ unsigned Alignment) = 0;
+
+ virtual void AddSelectionDAGCSEId(FoldingSetNodeID &ID) = 0;
+
+ /// print - Implement operator<<...
+ ///
+ virtual void print(std::ostream &O) const = 0;
+ void print(std::ostream *O) const { if (O) print(*O); }
+};
+
+inline std::ostream &operator<<(std::ostream &OS,
+ const MachineConstantPoolValue &V) {
+ V.print(OS);
+ return OS;
+}
+
+/// This class is a data container for one entry in a MachineConstantPool.
+/// It contains a pointer to the value and an offset from the start of
+/// the constant pool.
+/// @brief An entry in a MachineConstantPool
+class MachineConstantPoolEntry {
+public:
+ /// The constant itself.
+ union {
+ Constant *ConstVal;
+ MachineConstantPoolValue *MachineCPVal;
+ } Val;
+
+ /// The offset of the constant from the start of the pool. The top bit is set
+ /// when Val is a MachineConstantPoolValue.