59   struct FPS : public MachineFunctionPass {  struct
60     static char ID;
61     FPS() : MachineFunctionPass(ID) {  in FPS()  function
68     void getAnalysisUsage(AnalysisUsage &AU) const override {  in getAnalysisUsage()
78     MachineFunctionProperties getRequiredProperties() const override {  in getRequiredProperties()
83     StringRef getPassName() const override { return "X86 FP Stackifier"; }  in getPassName()
86     const TargetInstrInfo *TII = nullptr; // Machine instruction info.
99     struct LiveBundle {
119     SmallVector<LiveBundle, 8> LiveBundles;
122     EdgeBundles *Bundles = nullptr;
125     static unsigned calcLiveInMask(MachineBasicBlock *MBB, bool RemoveFPs) {  in calcLiveInMask()
146     MachineBasicBlock *MBB = nullptr;     // Current basic block
152     unsigned Stack[8];          // FP<n> Registers in each stack slot...
153     unsigned StackTop = 0;      // The current top of the FP stack.
155     enum {
163     unsigned RegMap[NumFPRegs];
172     void dumpStack() const {  in dumpStack()
183     unsigned getSlot(unsigned RegNo) const {  in getSlot()
189     bool isLive(unsigned RegNo) const {  in isLive()
195     unsigned getStackEntry(unsigned STi) const {  in getStackEntry()
203     unsigned getSTReg(unsigned RegNo) const {  in getSTReg()
208     void pushReg(unsigned Reg) {  in pushReg()
217     void popReg() {  in popReg()
223     bool isAtTop(unsigned RegNo) const { return getSlot(RegNo) == StackTop-1; }  in isAtTop()
224     void moveToTop(unsigned RegNo, MachineBasicBlock::iterator I) {  in moveToTop()
244     void duplicateToTop(unsigned RegNo, unsigned AsReg,  in duplicateToTop()
290     static bool isFPCopy(MachineInstr &MI) {  in isFPCopy()