const Mips16InstrInfo &I)
: MipsRegisterInfo(ST), TII(I) {}
+bool Mips16RegisterInfo::requiresRegisterScavenging
+ (const MachineFunction &MF) const {
+ return true;
+}
+bool Mips16RegisterInfo::requiresFrameIndexScavenging
+ (const MachineFunction &MF) const {
+ return true;
+}
+
+bool Mips16RegisterInfo::useFPForScavengingIndex
+ (const MachineFunction &MF) const {
+ return false;
+}
+
+bool Mips16RegisterInfo::saveScavengerRegister
+ (MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator I,
+ MachineBasicBlock::iterator &UseMI,
+ const TargetRegisterClass *RC,
+ unsigned Reg) const {
+ DebugLoc DL;
+ TII.copyPhysReg(MBB, I, DL, Mips::T0, Reg, true);
+ TII.copyPhysReg(MBB, UseMI, DL, Reg, Mips::T0, true);
+ return true;
+}
+
// This function eliminate ADJCALLSTACKDOWN,
// ADJCALLSTACKUP pseudo instructions
void Mips16RegisterInfo::
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const;
+
+ bool requiresRegisterScavenging(const MachineFunction &MF) const;
+
+ bool requiresFrameIndexScavenging(const MachineFunction &MF) const;
+
+ bool useFPForScavengingIndex(const MachineFunction &MF) const;
+
+ bool saveScavengerRegister(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator I,
+ MachineBasicBlock::iterator &UseMI,
+ const TargetRegisterClass *RC,
+ unsigned Reg) const;
+
private:
virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo,
int FrameIndex, uint64_t StackSize,