Don't cache the instruction info and register info objects.

These objects are internal to the TargetMachine object and may change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183485 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/AArch64/AArch64ISelDAGToDAG.cpp

@@ -33,7 +33,6 @@ namespace {
 
 class AArch64DAGToDAGISel : public SelectionDAGISel {
   AArch64TargetMachine &TM;
-  const AArch64InstrInfo *TII;
 
   /// Keep a pointer to the AArch64Subtarget around so that we can
   /// make the right decision when generating code for different targets.
@@ -43,7 +42,6 @@ public:
   explicit AArch64DAGToDAGISel(AArch64TargetMachine &tm,
                                CodeGenOpt::Level OptLevel)
     : SelectionDAGISel(tm, OptLevel), TM(tm),
-      TII(static_cast<const AArch64InstrInfo*>(TM.getInstrInfo())),
       Subtarget(&TM.getSubtarget<AArch64Subtarget>()) {
   }
 
@@ -243,12 +241,12 @@ SDNode *AArch64DAGToDAGISel::TrySelectToMoveImm(SDNode *Node) {
 SDValue
 AArch64DAGToDAGISel::getConstantPoolItemAddress(SDLoc DL,
                                                 const Constant *CV) {
-  EVT PtrVT = TLI->getPointerTy();
+  EVT PtrVT = getTargetLowering()->getPointerTy();
 
-  switch (TLI->getTargetMachine().getCodeModel()) {
+  switch (getTargetLowering()->getTargetMachine().getCodeModel()) {
   case CodeModel::Small: {
     unsigned Alignment =
-        TLI->getDataLayout()->getABITypeAlignment(CV->getType());
+      getTargetLowering()->getDataLayout()->getABITypeAlignment(CV->getType());
     return CurDAG->getNode(
         AArch64ISD::WrapperSmall, DL, PtrVT,
         CurDAG->getTargetConstantPool(CV, PtrVT, 0, 0, AArch64II::MO_NO_FLAG),
@@ -312,7 +310,8 @@ SDNode *AArch64DAGToDAGISel::SelectToLitPool(SDNode *Node) {
                                                   MemType.getSizeInBits()),
                                   UnsignedVal);
   SDValue PoolAddr = getConstantPoolItemAddress(DL, CV);
-  unsigned Alignment = TLI->getDataLayout()->getABITypeAlignment(CV->getType());
+  unsigned Alignment =
+    getTargetLowering()->getDataLayout()->getABITypeAlignment(CV->getType());
 
   return CurDAG->getExtLoad(Extension, DL, DestType, CurDAG->getEntryNode(),
                             PoolAddr,
@@ -327,7 +326,8 @@ SDNode *AArch64DAGToDAGISel::LowerToFPLitPool(SDNode *Node) {
   const ConstantFP *FV = cast<ConstantFPSDNode>(Node)->getConstantFPValue();
   EVT DestType = Node->getValueType(0);
 
-  unsigned Alignment = TLI->getDataLayout()->getABITypeAlignment(FV->getType());
+  unsigned Alignment =
+    getTargetLowering()->getDataLayout()->getABITypeAlignment(FV->getType());
   SDValue PoolAddr = getConstantPoolItemAddress(DL, FV);
 
   return CurDAG->getLoad(DestType, DL, CurDAG->getEntryNode(), PoolAddr,
@@ -473,7 +473,7 @@ SDNode *AArch64DAGToDAGISel::Select(SDNode *Node) {
                         AArch64::ATOMIC_CMP_SWAP_I64);
   case ISD::FrameIndex: {
     int FI = cast<FrameIndexSDNode>(Node)->getIndex();
-    EVT PtrTy = TLI->getPointerTy();
+    EVT PtrTy = getTargetLowering()->getPointerTy();
     SDValue TFI = CurDAG->getTargetFrameIndex(FI, PtrTy);
     return CurDAG->SelectNodeTo(Node, AArch64::ADDxxi_lsl0_s, PtrTy,
                                 TFI, CurDAG->getTargetConstant(0, PtrTy));

lib/Target/AArch64/AArch64ISelLowering.cpp

@@ -39,12 +39,8 @@ static TargetLoweringObjectFile *createTLOF(AArch64TargetMachine &TM) {
   llvm_unreachable("unknown subtarget type");
 }
 
-
 AArch64TargetLowering::AArch64TargetLowering(AArch64TargetMachine &TM)
-  : TargetLowering(TM, createTLOF(TM)),
-    Subtarget(&TM.getSubtarget<AArch64Subtarget>()),
-    RegInfo(TM.getRegisterInfo()),
-    Itins(TM.getInstrItineraryData()) {
+  : TargetLowering(TM, createTLOF(TM)), Itins(TM.getInstrItineraryData()) {
 
   // SIMD compares set the entire lane's bits to 1
   setBooleanVectorContents(ZeroOrNegativeOneBooleanContent);
@@ -1928,7 +1924,7 @@ AArch64TargetLowering::LowerGlobalAddressELFSmall(SDValue Op,
   }
 
   unsigned char HiFixup, LoFixup;
-  bool UseGOT = Subtarget->GVIsIndirectSymbol(GV, RelocM);
+  bool UseGOT = getSubtarget()->GVIsIndirectSymbol(GV, RelocM);
 
   if (UseGOT) {
     HiFixup = AArch64II::MO_GOT;
@@ -2024,7 +2020,7 @@ SDValue AArch64TargetLowering::LowerTLSDescCall(SDValue SymAddr,
 SDValue
 AArch64TargetLowering::LowerGlobalTLSAddress(SDValue Op,
                                              SelectionDAG &DAG) const {
-  assert(Subtarget->isTargetELF() &&
+  assert(getSubtarget()->isTargetELF() &&
          "TLS not implemented for non-ELF targets");
   assert(getTargetMachine().getCodeModel() == CodeModel::Small
          && "TLS only supported in small memory model");
@@ -2799,7 +2795,7 @@ AArch64TargetLowering::PerformDAGCombine(SDNode *N,
   switch (N->getOpcode()) {
   default: break;
   case ISD::AND: return PerformANDCombine(N, DCI);
-  case ISD::OR: return PerformORCombine(N, DCI, Subtarget);
+  case ISD::OR: return PerformORCombine(N, DCI, getSubtarget());
   case ISD::SRA: return PerformSRACombine(N, DCI);
   }
   return SDValue();

lib/Target/AArch64/AArch64ISelLowering.h

@@ -247,9 +247,11 @@ public:
   std::pair<unsigned, const TargetRegisterClass*>
   getRegForInlineAsmConstraint(const std::string &Constraint, EVT VT) const;
 private:
-  const AArch64Subtarget *Subtarget;
-  const TargetRegisterInfo *RegInfo;
   const InstrItineraryData *Itins;
+
+  const AArch64Subtarget *getSubtarget() const {
+    return &getTargetMachine().getSubtarget<AArch64Subtarget>();
+  }
 };
 } // namespace llvm
 

lib/Target/AArch64/AArch64InstrInfo.cpp

@@ -36,7 +36,7 @@ using namespace llvm;
 
 AArch64InstrInfo::AArch64InstrInfo(const AArch64Subtarget &STI)
   : AArch64GenInstrInfo(AArch64::ADJCALLSTACKDOWN, AArch64::ADJCALLSTACKUP),
-    RI(*this, STI), Subtarget(STI) {}
+    Subtarget(STI) {}
 
 void AArch64InstrInfo::copyPhysReg(MachineBasicBlock &MBB,
                                    MachineBasicBlock::iterator I, DebugLoc DL,

lib/Target/AArch64/AArch64RegisterInfo.cpp

@@ -29,9 +29,8 @@
 
 using namespace llvm;
 
-AArch64RegisterInfo::AArch64RegisterInfo(const AArch64InstrInfo &tii,
-                                         const AArch64Subtarget &sti)
-  : AArch64GenRegisterInfo(AArch64::X30), TII(tii) {
+AArch64RegisterInfo::AArch64RegisterInfo()
+  : AArch64GenRegisterInfo(AArch64::X30) {
 }
 
 const uint16_t *
@@ -122,6 +121,8 @@ AArch64RegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator MBBI,
     return;
   }
 
+  const AArch64InstrInfo &TII =
+    *static_cast<const AArch64InstrInfo*>(MF.getTarget().getInstrInfo());
   int MinOffset, MaxOffset, OffsetScale;
   if (MI.getOpcode() == AArch64::ADDxxi_lsl0_s) {
     MinOffset = 0;

lib/Target/AArch64/AArch64RegisterInfo.h

@@ -25,12 +25,7 @@ class AArch64InstrInfo;
 class AArch64Subtarget;
 
 struct AArch64RegisterInfo : public AArch64GenRegisterInfo {
-private:
-  const AArch64InstrInfo &TII;
-
-public:
-  AArch64RegisterInfo(const AArch64InstrInfo &tii,
-                      const AArch64Subtarget &sti);
+  AArch64RegisterInfo();
 
   const uint16_t *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
   const uint32_t *getCallPreservedMask(CallingConv::ID) const;