[CodeGen] Delete 15 unused declarations

Notes about a few declarations:

* LiveVariables::RegisterDefIsDead: deleted by r47927
* createForwardControlFlowIntegrityPass, createJumpInstrTablesPass: deleted by r230780
* RegScavenger::setLiveInsUsed: deleted by r292543
* ScheduleDAGInstrs::{toggleKillFlag,startBlockForKills}: deleted by r304055
* Localizer::shouldLocalize: remnant of D75207
* DwarfDebug::addSectionLabel: deleted by r373273

include/llvm/CodeGen/FastISel.h

@@ -524,7 +524,6 @@ protected:
   bool selectFreeze(const User *I);
   bool selectCast(const User *I, unsigned Opcode);
   bool selectExtractValue(const User *U);
-  bool selectInsertValue(const User *I);
   bool selectXRayCustomEvent(const CallInst *II);
   bool selectXRayTypedEvent(const CallInst *II);
 

include/llvm/CodeGen/GlobalISel/GISelKnownBits.h

@@ -44,7 +44,6 @@ class GISelKnownBits : public GISelChangeObserver {
 public:
   GISelKnownBits(MachineFunction &MF, unsigned MaxDepth = 6);
   virtual ~GISelKnownBits() = default;
-  void setMF(MachineFunction &MF);
 
   const MachineFunction &getMachineFunction() const {
     return MF;

include/llvm/CodeGen/GlobalISel/Legalizer.h

@@ -64,9 +64,6 @@ public:
         MachineFunctionProperties::Property::NoPHIs);
   }
 
-  bool combineExtracts(MachineInstr &MI, MachineRegisterInfo &MRI,
-                       const TargetInstrInfo &TII);
-
   bool runOnMachineFunction(MachineFunction &MF) override;
 
   static MFResult

include/llvm/CodeGen/GlobalISel/Localizer.h

@@ -52,9 +52,6 @@ private:
   /// TTI used for getting remat costs for instructions.
   TargetTransformInfo *TTI;
 
-  /// Check whether or not \p MI needs to be moved close to its uses.
-  bool shouldLocalize(const MachineInstr &MI);
-
   /// Check if \p MOUse is used in the same basic block as \p Def.
   /// If the use is in the same block, we say it is local.
   /// When the use is not local, \p InsertMBB will contain the basic

include/llvm/CodeGen/LexicalScopes.h

@@ -194,9 +194,6 @@ public:
     return I != LexicalScopeMap.end() ? &I->second : nullptr;
   }
 
-  /// dump - Print data structures to dbgs().
-  void dump() const;
-
   /// getOrCreateAbstractScope - Find or create an abstract lexical scope.
   LexicalScope *getOrCreateAbstractScope(const DILocalScope *Scope);
 

include/llvm/CodeGen/Passes.h

@@ -391,10 +391,6 @@ namespace llvm {
   /// createJumpInstrTables - This pass creates jump-instruction tables.
   ModulePass *createJumpInstrTablesPass();
 
-  /// createForwardControlFlowIntegrityPass - This pass adds control-flow
-  /// integrity.
-  ModulePass *createForwardControlFlowIntegrityPass();
-
   /// InterleavedAccess Pass - This pass identifies and matches interleaved
   /// memory accesses to target specific intrinsics.
   ///

include/llvm/CodeGen/RDFRegisters.h

@@ -115,12 +115,6 @@ namespace rdf {
       return RegMasks.get(Register::stackSlot2Index(R));
     }
 
-    LLVM_ATTRIBUTE_DEPRECATED(RegisterRef normalize(RegisterRef RR),
-      "This function is now an identity function");
-    RegisterRef normalize(RegisterRef RR) const {
-      return RR;
-    }
-
     bool alias(RegisterRef RA, RegisterRef RB) const {
       if (!isRegMaskId(RA.Reg))
         return !isRegMaskId(RB.Reg) ? aliasRR(RA, RB) : aliasRM(RA, RB);

include/llvm/CodeGen/ResourcePriorityQueue.h

@@ -107,7 +107,6 @@ namespace llvm {
     /// InitNumRegDefsLeft - Determine the # of regs defined by this node.
     ///
     void initNumRegDefsLeft(SUnit *SU);
-    void updateNumRegDefsLeft(SUnit *SU);
     int regPressureDelta(SUnit *SU, bool RawPressure = false);
     int rawRegPressureDelta (SUnit *SU, unsigned RCId);
 

include/llvm/CodeGen/ScheduleDAGInstrs.h

@@ -367,16 +367,6 @@ namespace llvm {
     void addVRegDefDeps(SUnit *SU, unsigned OperIdx);
     void addVRegUseDeps(SUnit *SU, unsigned OperIdx);
 
-    /// Initializes register live-range state for updating kills.
-    /// PostRA helper for rewriting kill flags.
-    void startBlockForKills(MachineBasicBlock *BB);
-
-    /// Toggles a register operand kill flag.
-    ///
-    /// Other adjustments may be made to the instruction if necessary. Return
-    /// true if the operand has been deleted, false if not.
-    void toggleKillFlag(MachineInstr &MI, MachineOperand &MO);
-
     /// Returns a mask for which lanes get read/written by the given (register)
     /// machine operand.
     LaneBitmask getLaneMaskForMO(const MachineOperand &MO) const;

include/llvm/CodeGen/SelectionDAG.h

@@ -721,9 +721,7 @@ public:
   // When generating a branch to a BB, we don't in general know enough
   // to provide debug info for the BB at that time, so keep this one around.
   SDValue getBasicBlock(MachineBasicBlock *MBB);
-  SDValue getBasicBlock(MachineBasicBlock *MBB, SDLoc dl);
   SDValue getExternalSymbol(const char *Sym, EVT VT);
-  SDValue getExternalSymbol(const char *Sym, const SDLoc &dl, EVT VT);
   SDValue getTargetExternalSymbol(const char *Sym, EVT VT,
                                   unsigned TargetFlags = 0);
   SDValue getMCSymbol(MCSymbol *Sym, EVT VT);
@@ -1456,8 +1454,6 @@ public:
                        EVT VT2, ArrayRef<SDValue> Ops);
   SDNode *SelectNodeTo(SDNode *N, unsigned MachineOpc, EVT VT1,
                        EVT VT2, EVT VT3, ArrayRef<SDValue> Ops);
-  SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1,
-                       EVT VT2, SDValue Op1);
   SDNode *SelectNodeTo(SDNode *N, unsigned MachineOpc, EVT VT1,
                        EVT VT2, SDValue Op1, SDValue Op2);
   SDNode *SelectNodeTo(SDNode *N, unsigned MachineOpc, SDVTList VTs,

include/llvm/Support/YAMLParser.h

@@ -510,7 +510,6 @@ public:
       : Node(NK_Alias, D, StringRef(), StringRef()), Name(Val) {}
 
   StringRef getName() const { return Name; }
-  Node *getTarget();
 
   static bool classof(const Node *N) { return N->getType() == NK_Alias; }
 

lib/CodeGen/AsmPrinter/DwarfDebug.h

@@ -806,7 +806,6 @@ public:
   bool tuneForSCE() const { return DebuggerTuning == DebuggerKind::SCE; }
   /// @}
 
-  void addSectionLabel(const MCSymbol *Sym);
   const MCSymbol *getSectionLabel(const MCSection *S);
   void insertSectionLabel(const MCSymbol *S);