[PowerPC][NFC] Cleanup load/store spilling code

[lei]

Summary

Cleanup and commonize code used for spilling to the stack.

[kamaub]

I think the index for the StoreSpillOpcodesArray and LoadSpillOpcodesArray arrays are incorrect.

Besides that the patch LGTM and I want to approve it.

llvm/lib/Target/PowerPC/PPCInstrInfo.h

138

The indentation in these code blocks needs to be unified.

177

enums start at 0 so i think this should be SOK_LastOpcodeSpill +1 right?

179

Same as above comment.

[kamaub]

LGTM, one pre-commit nit with the indentation.

llvm/lib/Target/PowerPC/PPCInstrInfo.h

177

I realise now that this is on purpose as the #define opcodes only have 15 entries, my apologies.

[lei]

llvm/lib/Target/PowerPC/PPCInstrInfo.h

138

this was actually done by clang-format.

[nemanjai]

LGTM.

[lei]

rebase

llvm/lib/Target/PowerPC/PPCInstrInfo.h

 // Information required to convert an instruction to just a materialized
 // immediate.
 struct LoadImmediateInfo {
   unsigned Imm : 16;
   unsigned Is64Bit : 1;
   unsigned SetCR : 1;
 };
 
+// Index into the OpcodesForSpill array.
+enum SpillOpcodeKey {
+  SOK_Int4Spill,
+  SOK_Int8Spill,
+  SOK_Float8Spill,
+  SOK_Float4Spill,
+  SOK_CRSpill,
+  SOK_CRBitSpill,
+  SOK_VRVectorSpill,
+  SOK_VSXVectorSpill,
+  SOK_VectorFloat8Spill,
+  SOK_VectorFloat4Spill,
+  SOK_VRSaveSpill,
+  SOK_QuadFloat8Spill,
+  SOK_QuadFloat4Spill,
+  SOK_QuadBitSpill,
+  SOK_SpillToVSR,
+  SOK_SPESpill,
+  SOK_LastOpcodeSpill // This must be last on the enum.
+};
+
+// Define list of load and store spill opcodes.
+#define Pwr8LoadOpcodes                                                        \
+  {                                                                            \
+    PPC::LWZ, PPC::LD, PPC::LFD, PPC::LFS, PPC::RESTORE_CR,                    \
+        PPC::RESTORE_CRBIT, PPC::LVX, PPC::LXVD2X, PPC::LXSDX, PPC::LXSSPX,    \
+        PPC::RESTORE_VRSAVE, PPC::QVLFDX, PPC::QVLFSXs, PPC::QVLFDXb,          \
+        PPC::SPILLTOVSR_LD, PPC::EVLDD                                         \
+  }
+
+#define Pwr9LoadOpcodes                                                        \
+  {                                                                            \
+    PPC::LWZ, PPC::LD, PPC::LFD, PPC::LFS, PPC::RESTORE_CR,                    \
+        PPC::RESTORE_CRBIT, PPC::LVX, PPC::LXV, PPC::DFLOADf64,                \
+        PPC::DFLOADf32, PPC::RESTORE_VRSAVE, PPC::QVLFDX, PPC::QVLFSXs,        \
+        PPC::QVLFDXb, PPC::SPILLTOVSR_LD                                       \
+  }
+
+#define Pwr8StoreOpcodes                                                       \
+  {                                                                            \
+    PPC::STW, PPC::STD, PPC::STFD, PPC::STFS, PPC::SPILL_CR, PPC::SPILL_CRBIT, \
+        PPC::STVX, PPC::STXVD2X, PPC::STXSDX, PPC::STXSSPX, PPC::SPILL_VRSAVE, \
+        PPC::QVSTFDX, PPC::QVSTFSXs, PPC::QVSTFDXb, PPC::SPILLTOVSR_ST,        \
+        PPC::EVSTDD                                                            \
+  }
+
+#define Pwr9StoreOpcodes                                                       \
+  {                                                                            \
+    PPC::STW, PPC::STD, PPC::STFD, PPC::STFS, PPC::SPILL_CR, PPC::SPILL_CRBIT, \
+        PPC::STVX, PPC::STXV, PPC::DFSTOREf64, PPC::DFSTOREf32,                \
+        PPC::SPILL_VRSAVE, PPC::QVSTFDX, PPC::QVSTFSXs, PPC::QVSTFDXb,         \
+        PPC::SPILLTOVSR_ST                                                     \
+  }
+
+// Initialize arrays for load and store spill opcodes on supported subtargets.
+#define StoreOpcodesForSpill                                                   \
+  { Pwr8StoreOpcodes, Pwr9StoreOpcodes }
+#define LoadOpcodesForSpill                                                    \
+  { Pwr8LoadOpcodes, Pwr9LoadOpcodes }
+
 class PPCSubtarget;
 class PPCInstrInfo : public PPCGenInstrInfo {
   PPCSubtarget &Subtarget;
   const PPCRegisterInfo RI;
+  const unsigned StoreSpillOpcodesArray[2][SOK_LastOpcodeSpill] =
+      StoreOpcodesForSpill;
+  const unsigned LoadSpillOpcodesArray[2][SOK_LastOpcodeSpill] =
+      LoadOpcodesForSpill;
 
   void StoreRegToStackSlot(MachineFunction &MF, unsigned SrcReg, bool isKill,
                            int FrameIdx, const TargetRegisterClass *RC,
                            SmallVectorImpl<MachineInstr *> &NewMIs) const;
   void LoadRegFromStackSlot(MachineFunction &MF, const DebugLoc &DL,
                             unsigned DestReg, int FrameIdx,
                             const TargetRegisterClass *RC,
                             SmallVectorImpl<MachineInstr *> &NewMIs) const;
class PPCInstrInfo : public PPCGenInstrInfo {
   bool isImmElgibleForForwarding(const MachineOperand &ImmMO,
                                  const MachineInstr &DefMI,
                                  const ImmInstrInfo &III,
                                  int64_t &Imm) const;
   bool isRegElgibleForForwarding(const MachineOperand &RegMO,
                                  const MachineInstr &DefMI,
                                  const MachineInstr &MI, bool KillDefMI,
                                  bool &IsFwdFeederRegKilled) const;
+  unsigned getSpillTarget() const;
   const unsigned *getStoreOpcodesForSpillArray() const;
   const unsigned *getLoadOpcodesForSpillArray() const;
   virtual void anchor();
 
 protected:
   /// Commutes the operands in the given instruction.
   /// The commutable operands are specified by their indices OpIdx1 and OpIdx2.
   ///
public:
   // registers. This ensures that when we reload a vector register the
   // element order in the register is the same as it was in memory.
   void loadRegFromStackSlotNoUpd(MachineBasicBlock &MBB,
                                  MachineBasicBlock::iterator MBBI,
                                  unsigned DestReg, int FrameIndex,
                                  const TargetRegisterClass *RC,
                                  const TargetRegisterInfo *TRI) const;
 
-  unsigned getStoreOpcodeForSpill(unsigned Reg,
-                                  const TargetRegisterClass *RC = nullptr) const;
+  unsigned getStoreOpcodeForSpill(const TargetRegisterClass *RC) const;
 
-  unsigned getLoadOpcodeForSpill(unsigned Reg,
-                                 const TargetRegisterClass *RC = nullptr) const;
+  unsigned getLoadOpcodeForSpill(const TargetRegisterClass *RC) const;
 
   bool
   reverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const override;
 
   bool FoldImmediate(MachineInstr &UseMI, MachineInstr &DefMI, Register Reg,
                      MachineRegisterInfo *MRI) const override;
 
   // If conversion by predication (only supported by some branch instructions).

llvm/lib/Target/PowerPC/PPCInstrInfo.cpp

 static cl::opt<bool> VSXSelfCopyCrash("crash-on-ppc-vsx-self-copy",
 cl::desc("Causes the backend to crash instead of generating a nop VSX copy"),
 cl::Hidden);
 
 static cl::opt<bool>
 UseOldLatencyCalc("ppc-old-latency-calc", cl::Hidden,
   cl::desc("Use the old (incorrect) instruction latency calculation"));
 
-// Index into the OpcodesForSpill array.
-enum SpillOpcodeKey {
-  SOK_Int4Spill,
-  SOK_Int8Spill,
-  SOK_Float8Spill,
-  SOK_Float4Spill,
-  SOK_CRSpill,
-  SOK_CRBitSpill,
-  SOK_VRVectorSpill,
-  SOK_VSXVectorSpill,
-  SOK_VectorFloat8Spill,
-  SOK_VectorFloat4Spill,
-  SOK_VRSaveSpill,
-  SOK_QuadFloat8Spill,
-  SOK_QuadFloat4Spill,
-  SOK_QuadBitSpill,
-  SOK_SpillToVSR,
-  SOK_SPESpill,
-  SOK_LastOpcodeSpill  // This must be last on the enum.
-};
-
 // Pin the vtable to this file.
 void PPCInstrInfo::anchor() {}
 
 PPCInstrInfo::PPCInstrInfo(PPCSubtarget &STI)
     : PPCGenInstrInfo(PPC::ADJCALLSTACKDOWN, PPC::ADJCALLSTACKUP,
                       /* CatchRetOpcode */ -1,
                       STI.isPPC64() ? PPC::BLR8 : PPC::BLR),
       Subtarget(STI), RI(STI.getTargetMachine()) {}
void PPCInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
   const MCInstrDesc &MCID = get(Opc);
   if (MCID.getNumOperands() == 3)
     BuildMI(MBB, I, DL, MCID, DestReg)
       .addReg(SrcReg).addReg(SrcReg, getKillRegState(KillSrc));
   else
     BuildMI(MBB, I, DL, MCID, DestReg).addReg(SrcReg, getKillRegState(KillSrc));
 }
 
-unsigned PPCInstrInfo::getStoreOpcodeForSpill(unsigned Reg,
-                                              const TargetRegisterClass *RC)
-                                              const {
-  const unsigned *OpcodesForSpill = getStoreOpcodesForSpillArray();
+static unsigned getSpillIndex(const TargetRegisterClass *RC) {
   int OpcodeIndex = 0;
 
-  if (RC != nullptr) {
-    if (PPC::GPRCRegClass.hasSubClassEq(RC) ||
-        PPC::GPRC_NOR0RegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_Int4Spill;
-    } else if (PPC::G8RCRegClass.hasSubClassEq(RC) ||
-               PPC::G8RC_NOX0RegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_Int8Spill;
-    } else if (PPC::F8RCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_Float8Spill;
-    } else if (PPC::F4RCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_Float4Spill;
-    } else if (PPC::SPERCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_SPESpill;
-    } else if (PPC::CRRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_CRSpill;
-    } else if (PPC::CRBITRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_CRBitSpill;
-    } else if (PPC::VRRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_VRVectorSpill;
-    } else if (PPC::VSRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_VSXVectorSpill;
-    } else if (PPC::VSFRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_VectorFloat8Spill;
-    } else if (PPC::VSSRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_VectorFloat4Spill;
-    } else if (PPC::VRSAVERCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_VRSaveSpill;
-    } else if (PPC::QFRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_QuadFloat8Spill;
-    } else if (PPC::QSRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_QuadFloat4Spill;
-    } else if (PPC::QBRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_QuadBitSpill;
-    } else if (PPC::SPILLTOVSRRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_SpillToVSR;
-    } else {
-      llvm_unreachable("Unknown regclass!");
-    }
-  } else {
-    if (PPC::GPRCRegClass.contains(Reg) ||
-        PPC::GPRC_NOR0RegClass.contains(Reg)) {
-      OpcodeIndex = SOK_Int4Spill;
-    } else if (PPC::G8RCRegClass.contains(Reg) ||
-               PPC::G8RC_NOX0RegClass.contains(Reg)) {
-      OpcodeIndex = SOK_Int8Spill;
-    } else if (PPC::F8RCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_Float8Spill;
-    } else if (PPC::F4RCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_Float4Spill;
-    } else if (PPC::SPERCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_SPESpill;
-    } else if (PPC::CRRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_CRSpill;
-    } else if (PPC::CRBITRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_CRBitSpill;
-    } else if (PPC::VRRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_VRVectorSpill;
-    } else if (PPC::VSRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_VSXVectorSpill;
-    } else if (PPC::VSFRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_VectorFloat8Spill;
-    } else if (PPC::VSSRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_VectorFloat4Spill;
-    } else if (PPC::VRSAVERCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_VRSaveSpill;
-    } else if (PPC::QFRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_QuadFloat8Spill;
-    } else if (PPC::QSRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_QuadFloat4Spill;
-    } else if (PPC::QBRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_QuadBitSpill;
-    } else if (PPC::SPILLTOVSRRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_SpillToVSR;
-    } else {
-      llvm_unreachable("Unknown regclass!");
-    }
-  }
-  return OpcodesForSpill[OpcodeIndex];
+  return OpcodeIndex;
+
+unsigned
+PPCInstrInfo::getStoreOpcodeForSpill(const TargetRegisterClass *RC) const {
+  const unsigned *OpcodesForSpill = getStoreOpcodesForSpillArray();
+  return OpcodesForSpill[getSpillIndex(RC)];
 }
 
 unsigned
-PPCInstrInfo::getLoadOpcodeForSpill(unsigned Reg,
-                                    const TargetRegisterClass *RC) const {
+PPCInstrInfo::getLoadOpcodeForSpill(const TargetRegisterClass *RC) const {
   const unsigned *OpcodesForSpill = getLoadOpcodesForSpillArray();
-  int OpcodeIndex = 0;
-
-  if (RC != nullptr) {
-    if (PPC::GPRCRegClass.hasSubClassEq(RC) ||
-        PPC::GPRC_NOR0RegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_Int4Spill;
-    } else if (PPC::G8RCRegClass.hasSubClassEq(RC) ||
-               PPC::G8RC_NOX0RegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_Int8Spill;
-    } else if (PPC::F8RCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_Float8Spill;
-    } else if (PPC::F4RCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_Float4Spill;
-    } else if (PPC::SPERCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_SPESpill;
-    } else if (PPC::CRRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_CRSpill;
-    } else if (PPC::CRBITRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_CRBitSpill;
-    } else if (PPC::VRRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_VRVectorSpill;
-    } else if (PPC::VSRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_VSXVectorSpill;
-    } else if (PPC::VSFRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_VectorFloat8Spill;
-    } else if (PPC::VSSRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_VectorFloat4Spill;
-    } else if (PPC::VRSAVERCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_VRSaveSpill;
-    } else if (PPC::QFRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_QuadFloat8Spill;
-    } else if (PPC::QSRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_QuadFloat4Spill;
-    } else if (PPC::QBRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_QuadBitSpill;
-    } else if (PPC::SPILLTOVSRRCRegClass.hasSubClassEq(RC)) {
-      OpcodeIndex = SOK_SpillToVSR;
-    } else {
-      llvm_unreachable("Unknown regclass!");
-    }
-  } else {
-    if (PPC::GPRCRegClass.contains(Reg) ||
-        PPC::GPRC_NOR0RegClass.contains(Reg)) {
-      OpcodeIndex = SOK_Int4Spill;
-    } else if (PPC::G8RCRegClass.contains(Reg) ||
-               PPC::G8RC_NOX0RegClass.contains(Reg)) {
-      OpcodeIndex = SOK_Int8Spill;
-    } else if (PPC::F8RCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_Float8Spill;
-    } else if (PPC::F4RCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_Float4Spill;
-    } else if (PPC::SPERCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_SPESpill;
-    } else if (PPC::CRRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_CRSpill;
-    } else if (PPC::CRBITRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_CRBitSpill;
-    } else if (PPC::VRRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_VRVectorSpill;
-    } else if (PPC::VSRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_VSXVectorSpill;
-    } else if (PPC::VSFRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_VectorFloat8Spill;
-    } else if (PPC::VSSRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_VectorFloat4Spill;
-    } else if (PPC::VRSAVERCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_VRSaveSpill;
-    } else if (PPC::QFRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_QuadFloat8Spill;
-    } else if (PPC::QSRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_QuadFloat4Spill;
-    } else if (PPC::QBRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_QuadBitSpill;
-    } else if (PPC::SPILLTOVSRRCRegClass.contains(Reg)) {
-      OpcodeIndex = SOK_SpillToVSR;
-    } else {
-      llvm_unreachable("Unknown regclass!");
-    }
-  }
-  return OpcodesForSpill[OpcodeIndex];
+  return OpcodesForSpill[getSpillIndex(RC)];
 }
 
 void PPCInstrInfo::StoreRegToStackSlot(
     MachineFunction &MF, unsigned SrcReg, bool isKill, int FrameIdx,
     const TargetRegisterClass *RC,
     SmallVectorImpl<MachineInstr *> &NewMIs) const {
-  unsigned Opcode = getStoreOpcodeForSpill(PPC::NoRegister, RC);
+  unsigned Opcode = getStoreOpcodeForSpill(RC);
   DebugLoc DL;
 
   PPCFunctionInfo *FuncInfo = MF.getInfo<PPCFunctionInfo>();
   FuncInfo->setHasSpills();
 
   NewMIs.push_back(addFrameReference(
       BuildMI(MF, DL, get(Opcode)).addReg(SrcReg, getKillRegState(isKill)),
       FrameIdx));
void PPCInstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
   storeRegToStackSlotNoUpd(MBB, MI, SrcReg, isKill, FrameIdx, RC, TRI);
 }
 
 void PPCInstrInfo::LoadRegFromStackSlot(MachineFunction &MF, const DebugLoc &DL,
                                         unsigned DestReg, int FrameIdx,
                                         const TargetRegisterClass *RC,
                                         SmallVectorImpl<MachineInstr *> &NewMIs)
                                         const {
-  unsigned Opcode = getLoadOpcodeForSpill(PPC::NoRegister, RC);
+  unsigned Opcode = getLoadOpcodeForSpill(RC);
   NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(Opcode), DestReg),
                                      FrameIdx));
   PPCFunctionInfo *FuncInfo = MF.getInfo<PPCFunctionInfo>();
 
   if (PPC::CRRCRegClass.hasSubClassEq(RC) ||
       PPC::CRBITRCRegClass.hasSubClassEq(RC))
     FuncInfo->setSpillsCR();
 
for (int i = 1, e = MI.getNumOperands(); i < e; i++) {
           }
         }
       }
     }
   }
   return OpNoForForwarding == ~0U ? nullptr : DefMI;
 }
 
-const unsigned *PPCInstrInfo::getStoreOpcodesForSpillArray() const {
-  static const unsigned OpcodesForSpill[2][SOK_LastOpcodeSpill] = {
-      // Power 8
-      {PPC::STW, PPC::STD, PPC::STFD, PPC::STFS, PPC::SPILL_CR,
-       PPC::SPILL_CRBIT, PPC::STVX, PPC::STXVD2X, PPC::STXSDX, PPC::STXSSPX,
-       PPC::SPILL_VRSAVE, PPC::QVSTFDX, PPC::QVSTFSXs, PPC::QVSTFDXb,
-       PPC::SPILLTOVSR_ST, PPC::EVSTDD},
-      // Power 9
-      {PPC::STW, PPC::STD, PPC::STFD, PPC::STFS, PPC::SPILL_CR,
-       PPC::SPILL_CRBIT, PPC::STVX, PPC::STXV, PPC::DFSTOREf64, PPC::DFSTOREf32,
-       PPC::SPILL_VRSAVE, PPC::QVSTFDX, PPC::QVSTFSXs, PPC::QVSTFDXb,
-       PPC::SPILLTOVSR_ST}};
+unsigned PPCInstrInfo::getSpillTarget() const {
+  return Subtarget.hasP9Vector() ? 1 : 0;
+}
 
-  return OpcodesForSpill[(Subtarget.hasP9Vector()) ? 1 : 0];
+const unsigned *PPCInstrInfo::getStoreOpcodesForSpillArray() const {
+  return StoreSpillOpcodesArray[getSpillTarget()];
 }
 
 const unsigned *PPCInstrInfo::getLoadOpcodesForSpillArray() const {
-  static const unsigned OpcodesForSpill[2][SOK_LastOpcodeSpill] = {
-      // Power 8
-      {PPC::LWZ, PPC::LD, PPC::LFD, PPC::LFS, PPC::RESTORE_CR,
-       PPC::RESTORE_CRBIT, PPC::LVX, PPC::LXVD2X, PPC::LXSDX, PPC::LXSSPX,
-       PPC::RESTORE_VRSAVE, PPC::QVLFDX, PPC::QVLFSXs, PPC::QVLFDXb,
-       PPC::SPILLTOVSR_LD, PPC::EVLDD},
-      // Power 9
-      {PPC::LWZ, PPC::LD, PPC::LFD, PPC::LFS, PPC::RESTORE_CR,
-       PPC::RESTORE_CRBIT, PPC::LVX, PPC::LXV, PPC::DFLOADf64, PPC::DFLOADf32,
-       PPC::RESTORE_VRSAVE, PPC::QVLFDX, PPC::QVLFSXs, PPC::QVLFDXb,
-       PPC::SPILLTOVSR_LD}};
-
-  return OpcodesForSpill[(Subtarget.hasP9Vector()) ? 1 : 0];
+  return LoadSpillOpcodesArray[getSpillTarget()];
 }
 
 void PPCInstrInfo::fixupIsDeadOrKill(MachineInstr &StartMI, MachineInstr &EndMI,
                                      unsigned RegNo) const {
   const MachineRegisterInfo &MRI =
       StartMI.getParent()->getParent()->getRegInfo();
   if (MRI.isSSA())
     return;

llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp

bool PPCRegisterInfo::requiresFrameIndexScavenging(const MachineFunction &MF) const {
 
   // The callee saved info is valid so it can be traversed.
   // Checking for registers that need saving that do not have load or store
   // forms where the address offset is an immediate.
   for (unsigned i = 0; i < Info.size(); i++) {
     int FrIdx = Info[i].getFrameIdx();
     unsigned Reg = Info[i].getReg();
 
-    unsigned Opcode = InstrInfo->getStoreOpcodeForSpill(Reg);
+    const TargetRegisterClass *RC = getMinimalPhysRegClass(Reg);
+    unsigned Opcode = InstrInfo->getStoreOpcodeForSpill(RC);
     if (!MFI.isFixedObjectIndex(FrIdx)) {
       // This is not a fixed object. If it requires alignment then we may still
       // need to use the XForm.
       if (offsetMinAlignForOpcode(Opcode) > 1)
         return true;
     }
 
     // This is eiher: