+ template<typename Ty>
+ const Ty *getInfo() const {
+ return const_cast<MachineFunction*>(this)->getInfo<Ty>();
+ }
+
+ /// isPhysRegUsed - Return true if the specified register is used in this
+ /// function. This only works after register allocation.
+ bool isPhysRegUsed(unsigned Reg) const { return UsedPhysRegs[Reg]; }
+
+ /// setPhysRegUsed - Mark the specified register used in this function.
+ /// This should only be called during and after register allocation.
+ void setPhysRegUsed(unsigned Reg) { UsedPhysRegs[Reg] = true; }
+
+ /// setPhysRegUnused - Mark the specified register unused in this function.
+ /// This should only be called during and after register allocation.
+ void setPhysRegUnused(unsigned Reg) { UsedPhysRegs[Reg] = false; }
+
+ // LiveIn/LiveOut management methods.
+
+ /// addLiveIn/Out - Add the specified register as a live in/out. Note that it
+ /// is an error to add the same register to the same set more than once.
+ void addLiveIn(unsigned Reg, unsigned vreg = 0) {
+ LiveIns.push_back(std::make_pair(Reg, vreg));
+ }
+ void addLiveOut(unsigned Reg) { LiveOuts.push_back(Reg); }
+
+ // Iteration support for live in/out sets. These sets are kept in sorted
+ // order by their register number.
+ typedef std::vector<std::pair<unsigned,unsigned> >::const_iterator
+ livein_iterator;
+ typedef std::vector<unsigned>::const_iterator liveout_iterator;
+ livein_iterator livein_begin() const { return LiveIns.begin(); }
+ livein_iterator livein_end() const { return LiveIns.end(); }
+ bool livein_empty() const { return LiveIns.empty(); }
+ liveout_iterator liveout_begin() const { return LiveOuts.begin(); }
+ liveout_iterator liveout_end() const { return LiveOuts.end(); }
+ bool liveout_empty() const { return LiveOuts.empty(); }
+