59   struct FPS : public MachineFunctionPass {  struct
60     static char ID;
61     FPS() : MachineFunctionPass(ID) {  in FPS()  function
69     void getAnalysisUsage(AnalysisUsage &AU) const override {  in getAnalysisUsage()
79     MachineFunctionProperties getRequiredProperties() const override {  in getRequiredProperties()
84     const char *getPassName() const override { return "X86 FP Stackifier"; }  in getPassName()
87     const TargetInstrInfo *TII; // Machine instruction info.
100     struct LiveBundle {
120     SmallVector<LiveBundle, 8> LiveBundles;
123     EdgeBundles *Bundles;
126     static unsigned calcLiveInMask(MachineBasicBlock *MBB) {  in calcLiveInMask()
139     MachineBasicBlock *MBB;     // Current basic block
145     unsigned Stack[8];          // FP<n> Registers in each stack slot...
146     unsigned StackTop;          // The current top of the FP stack.
148     enum {
156     unsigned RegMap[NumFPRegs];
165     void dumpStack() const {  in dumpStack()
176     unsigned getSlot(unsigned RegNo) const {  in getSlot()
182     bool isLive(unsigned RegNo) const {  in isLive()
188     unsigned getStackEntry(unsigned STi) const {  in getStackEntry()
196     unsigned getSTReg(unsigned RegNo) const {  in getSTReg()
201     void pushReg(unsigned Reg) {  in pushReg()
209     bool isAtTop(unsigned RegNo) const { return getSlot(RegNo) == StackTop-1; }  in isAtTop()
210     void moveToTop(unsigned RegNo, MachineBasicBlock::iterator I) {  in moveToTop()
230     void duplicateToTop(unsigned RegNo, unsigned AsReg,  in duplicateToTop()
276     static bool isFPCopy(MachineInstr &MI) {  in isFPCopy()