[AArch64] Remove emitCalleeSavedFrameMoves

[kazu]

Summary

The last use of emitCalleeSavedFrameMoves was removed on March 24,
2022 in commit 50a97aacacf689f838451439d913421d608e1bed.

[MaskRay]

Thanks!

llvm/lib/Target/AArch64/AArch64FrameLowering.h

 namespace llvm {
 
 class AArch64FrameLowering : public TargetFrameLowering {
 public:
   explicit AArch64FrameLowering()
       : TargetFrameLowering(StackGrowsDown, Align(16), 0, Align(16),
                             true /*StackRealignable*/) {}
 
-  void emitCalleeSavedFrameMoves(MachineBasicBlock &MBB,
-                                 MachineBasicBlock::iterator MBBI) const;
-
   void resetCFIToInitialState(MachineBasicBlock &MBB) const override;
 
   MachineBasicBlock::iterator
   eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
                                 MachineBasicBlock::iterator I) const override;
 
   /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
   /// the function.

llvm/lib/Target/AArch64/AArch64FrameLowering.cpp

for (const auto &Info : CSI) {
 
     unsigned CFIIndex = MF.addFrameInst(createCFAOffset(TRI, Reg, Offset));
     BuildMI(MBB, MBBI, DL, TII.get(TargetOpcode::CFI_INSTRUCTION))
         .addCFIIndex(CFIIndex)
         .setMIFlags(MachineInstr::FrameSetup);
   }
 }
 
-void AArch64FrameLowering::emitCalleeSavedFrameMoves(
-    MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI) const {
-  emitCalleeSavedGPRLocations(MBB, MBBI);
-  emitCalleeSavedSVELocations(MBB, MBBI);
-}
-
 static void insertCFISameValue(const MCInstrDesc &Desc, MachineFunction &MF,
                                MachineBasicBlock &MBB,
                                MachineBasicBlock::iterator InsertPt,
                                unsigned DwarfReg) {
   unsigned CFIIndex =
       MF.addFrameInst(MCCFIInstruction::createSameValue(nullptr, DwarfReg));
   BuildMI(MBB, InsertPt, DebugLoc(), Desc).addCFIIndex(CFIIndex);
 }