class MachineInstr;
class MachineFunction;
class TargetInstrInfo;
+ class TargetRegisterInfo;
class VirtRegMap : public MachineFunctionPass {
public:
private:
const TargetInstrInfo *TII;
-
+ const TargetRegisterInfo *TRI;
MachineFunction *MF;
+
+ DenseMap<const TargetRegisterClass*, BitVector> allocatableRCRegs;
+
/// Virt2PhysMap - This is a virtual to physical register
/// mapping. Each virtual register is required to have an entry in
/// it; even spilled virtual registers (the register mapped to a
unsigned getFirstUnusedRegister(const TargetRegisterClass *RC) {
int Reg = UnusedRegs.find_first();
while (Reg != -1) {
- if (RC->contains(Reg))
+ if (allocatableRCRegs[RC][Reg])
return (unsigned)Reg;
Reg = UnusedRegs.find_next(Reg);
}