YQ Connector: support managed ClickHouse

Со стороны dqrun можно обратиться к инстансу коннектора, который работает на streaming стенде, и извлечь данные из облачного CH.

1 files changed, 1320 insertions, 0 deletions

diff --git a/contrib/libs/llvm14/include/llvm/CodeGen/MachineFunction.h b/contrib/libs/llvm14/include/llvm/CodeGen/MachineFunction.h
new file mode 100644
index 0000000000..939efbc1f7
--- /dev/null
+++ b/contrib/libs/llvm14/include/llvm/CodeGen/MachineFunction.h
@@ -0,0 +1,1320 @@
+#pragma once
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#endif
+
+//===- llvm/CodeGen/MachineFunction.h ---------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Collect native machine code for a function.  This class contains a list of
+// MachineBasicBlock instances that make up the current compiled function.
+//
+// This class also contains pointers to various classes which hold
+// target-specific information about the generated code.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_MACHINEFUNCTION_H
+#define LLVM_CODEGEN_MACHINEFUNCTION_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/BitVector.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/GraphTraits.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/ilist.h"
+#include "llvm/ADT/iterator.h"
+#include "llvm/Analysis/EHPersonalities.h"
+#include "llvm/CodeGen/MachineBasicBlock.h"
+#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/CodeGen/MachineMemOperand.h"
+#include "llvm/Support/Allocator.h"
+#include "llvm/Support/ArrayRecycler.h"
+#include "llvm/Support/AtomicOrdering.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/Recycler.h"
+#include "llvm/Target/TargetOptions.h"
+#include <cassert>
+#include <cstdint>
+#include <memory>
+#include <utility>
+#include <vector>
+
+namespace llvm {
+
+class BasicBlock;
+class BlockAddress;
+class DataLayout;
+class DebugLoc;
+struct DenormalMode;
+class DIExpression;
+class DILocalVariable;
+class DILocation;
+class Function;
+class GISelChangeObserver;
+class GlobalValue;
+class LLVMTargetMachine;
+class MachineConstantPool;
+class MachineFrameInfo;
+class MachineFunction;
+class MachineJumpTableInfo;
+class MachineModuleInfo;
+class MachineRegisterInfo;
+class MCContext;
+class MCInstrDesc;
+class MCSymbol;
+class MCSection;
+class Pass;
+class PseudoSourceValueManager;
+class raw_ostream;
+class SlotIndexes;
+class StringRef;
+class TargetRegisterClass;
+class TargetSubtargetInfo;
+struct WasmEHFuncInfo;
+struct WinEHFuncInfo;
+
+template <> struct ilist_alloc_traits<MachineBasicBlock> {
+  void deleteNode(MachineBasicBlock *MBB);
+};
+
+template <> struct ilist_callback_traits<MachineBasicBlock> {
+  void addNodeToList(MachineBasicBlock* N);
+  void removeNodeFromList(MachineBasicBlock* N);
+
+  template <class Iterator>
+  void transferNodesFromList(ilist_callback_traits &OldList, Iterator, Iterator) {
+    assert(this == &OldList && "never transfer MBBs between functions");
+  }
+};
+
+/// MachineFunctionInfo - This class can be derived from and used by targets to
+/// hold private target-specific information for each MachineFunction.  Objects
+/// of type are accessed/created with MF::getInfo and destroyed when the
+/// MachineFunction is destroyed.
+struct MachineFunctionInfo {
+  virtual ~MachineFunctionInfo();
+
+  /// Factory function: default behavior is to call new using the
+  /// supplied allocator.
+  ///
+  /// This function can be overridden in a derive class.
+  template<typename Ty>
+  static Ty *create(BumpPtrAllocator &Allocator, MachineFunction &MF) {
+    return new (Allocator.Allocate<Ty>()) Ty(MF);
+  }
+};
+
+/// Properties which a MachineFunction may have at a given point in time.
+/// Each of these has checking code in the MachineVerifier, and passes can
+/// require that a property be set.
+class MachineFunctionProperties {
+  // Possible TODO: Allow targets to extend this (perhaps by allowing the
+  // constructor to specify the size of the bit vector)
+  // Possible TODO: Allow requiring the negative (e.g. VRegsAllocated could be
+  // stated as the negative of "has vregs"
+
+public:
+  // The properties are stated in "positive" form; i.e. a pass could require
+  // that the property hold, but not that it does not hold.
+
+  // Property descriptions:
+  // IsSSA: True when the machine function is in SSA form and virtual registers
+  //  have a single def.
+  // NoPHIs: The machine function does not contain any PHI instruction.
+  // TracksLiveness: True when tracking register liveness accurately.
+  //  While this property is set, register liveness information in basic block
+  //  live-in lists and machine instruction operands (e.g. implicit defs) is
+  //  accurate, kill flags are conservatively accurate (kill flag correctly
+  //  indicates the last use of a register, an operand without kill flag may or
+  //  may not be the last use of a register). This means it can be used to
+  //  change the code in ways that affect the values in registers, for example
+  //  by the register scavenger.
+  //  When this property is cleared at a very late time, liveness is no longer
+  //  reliable.
+  // NoVRegs: The machine function does not use any virtual registers.
+  // Legalized: In GlobalISel: the MachineLegalizer ran and all pre-isel generic
+  //  instructions have been legalized; i.e., all instructions are now one of:
+  //   - generic and always legal (e.g., COPY)
+  //   - target-specific
+  //   - legal pre-isel generic instructions.
+  // RegBankSelected: In GlobalISel: the RegBankSelect pass ran and all generic
+  //  virtual registers have been assigned to a register bank.
+  // Selected: In GlobalISel: the InstructionSelect pass ran and all pre-isel
+  //  generic instructions have been eliminated; i.e., all instructions are now
+  //  target-specific or non-pre-isel generic instructions (e.g., COPY).
+  //  Since only pre-isel generic instructions can have generic virtual register
+  //  operands, this also means that all generic virtual registers have been
+  //  constrained to virtual registers (assigned to register classes) and that
+  //  all sizes attached to them have been eliminated.
+  // TiedOpsRewritten: The twoaddressinstruction pass will set this flag, it
+  //  means that tied-def have been rewritten to meet the RegConstraint.
+  // FailsVerification: Means that the function is not expected to pass machine
+  //  verification. This can be set by passes that introduce known problems that
+  //  have not been fixed yet.
+  // TracksDebugUserValues: Without this property enabled, debug instructions
+  // such as DBG_VALUE are allowed to reference virtual registers even if those
+  // registers do not have a definition. With the property enabled virtual
+  // registers must only be used if they have a definition. This property
+  // allows earlier passes in the pipeline to skip updates of `DBG_VALUE`
+  // instructions to save compile time.
+  enum class Property : unsigned {
+    IsSSA,
+    NoPHIs,
+    TracksLiveness,
+    NoVRegs,
+    FailedISel,
+    Legalized,
+    RegBankSelected,
+    Selected,
+    TiedOpsRewritten,
+    FailsVerification,
+    TracksDebugUserValues,
+    LastProperty = TracksDebugUserValues,
+  };
+
+  bool hasProperty(Property P) const {
+    return Properties[static_cast<unsigned>(P)];
+  }
+
+  MachineFunctionProperties &set(Property P) {
+    Properties.set(static_cast<unsigned>(P));
+    return *this;
+  }
+
+  MachineFunctionProperties &reset(Property P) {
+    Properties.reset(static_cast<unsigned>(P));
+    return *this;
+  }
+
+  /// Reset all the properties.
+  MachineFunctionProperties &reset() {
+    Properties.reset();
+    return *this;
+  }
+
+  MachineFunctionProperties &set(const MachineFunctionProperties &MFP) {
+    Properties |= MFP.Properties;
+    return *this;
+  }
+
+  MachineFunctionProperties &reset(const MachineFunctionProperties &MFP) {
+    Properties.reset(MFP.Properties);
+    return *this;
+  }
+
+  // Returns true if all properties set in V (i.e. required by a pass) are set
+  // in this.
+  bool verifyRequiredProperties(const MachineFunctionProperties &V) const {
+    return !V.Properties.test(Properties);
+  }
+
+  /// Print the MachineFunctionProperties in human-readable form.
+  void print(raw_ostream &OS) const;
+
+private:
+  BitVector Properties =
+      BitVector(static_cast<unsigned>(Property::LastProperty)+1);
+};
+
+struct SEHHandler {
+  /// Filter or finally function. Null indicates a catch-all.
+  const Function *FilterOrFinally;
+
+  /// Address of block to recover at. Null for a finally handler.
+  const BlockAddress *RecoverBA;
+};
+
+/// This structure is used to retain landing pad info for the current function.
+struct LandingPadInfo {
+  MachineBasicBlock *LandingPadBlock;      // Landing pad block.
+  SmallVector<MCSymbol *, 1> BeginLabels;  // Labels prior to invoke.
+  SmallVector<MCSymbol *, 1> EndLabels;    // Labels after invoke.
+  SmallVector<SEHHandler, 1> SEHHandlers;  // SEH handlers active at this lpad.
+  MCSymbol *LandingPadLabel = nullptr;     // Label at beginning of landing pad.
+  std::vector<int> TypeIds;                // List of type ids (filters negative).
+
+  explicit LandingPadInfo(MachineBasicBlock *MBB)
+      : LandingPadBlock(MBB) {}
+};
+
+class LLVM_EXTERNAL_VISIBILITY MachineFunction {
+  Function &F;
+  const LLVMTargetMachine &Target;
+  const TargetSubtargetInfo *STI;
+  MCContext &Ctx;
+  MachineModuleInfo &MMI;
+
+  // RegInfo - Information about each register in use in the function.
+  MachineRegisterInfo *RegInfo;
+
+  // Used to keep track of target-specific per-machine function information for
+  // the target implementation.
+  MachineFunctionInfo *MFInfo;
+
+  // Keep track of objects allocated on the stack.
+  MachineFrameInfo *FrameInfo;
+
+  // Keep track of constants which are spilled to memory
+  MachineConstantPool *ConstantPool;
+
+  // Keep track of jump tables for switch instructions
+  MachineJumpTableInfo *JumpTableInfo;
+
+  // Keep track of the function section.
+  MCSection *Section = nullptr;
+
+  // Keeps track of Wasm exception handling related data. This will be null for
+  // functions that aren't using a wasm EH personality.
+  WasmEHFuncInfo *WasmEHInfo = nullptr;
+
+  // Keeps track of Windows exception handling related data. This will be null
+  // for functions that aren't using a funclet-based EH personality.
+  WinEHFuncInfo *WinEHInfo = nullptr;
+
+  // Function-level unique numbering for MachineBasicBlocks.  When a
+  // MachineBasicBlock is inserted into a MachineFunction is it automatically
+  // numbered and this vector keeps track of the mapping from ID's to MBB's.
+  std::vector<MachineBasicBlock*> MBBNumbering;
+
+  // Unary encoding of basic block symbols is used to reduce size of ".strtab".
+  // Basic block number 'i' gets a prefix of length 'i'.  The ith character also
+  // denotes the type of basic block number 'i'.  Return blocks are marked with
+  // 'r', landing pads with 'l' and regular blocks with 'a'.
+  std::vector<char> BBSectionsSymbolPrefix;
+
+  // Pool-allocate MachineFunction-lifetime and IR objects.
+  BumpPtrAllocator Allocator;
+
+  // Allocation management for instructions in function.
+  Recycler<MachineInstr> InstructionRecycler;
+
+  // Allocation management for operand arrays on instructions.
+  ArrayRecycler<MachineOperand> OperandRecycler;
+
+  // Allocation management for basic blocks in function.
+  Recycler<MachineBasicBlock> BasicBlockRecycler;
+
+  // List of machine basic blocks in function
+  using BasicBlockListType = ilist<MachineBasicBlock>;
+  BasicBlockListType BasicBlocks;
+
+  /// FunctionNumber - This provides a unique ID for each function emitted in
+  /// this translation unit.
+  ///
+  unsigned FunctionNumber;
+
+  /// Alignment - The alignment of the function.
+  Align Alignment;
+
+  /// ExposesReturnsTwice - True if the function calls setjmp or related
+  /// functions with attribute "returns twice", but doesn't have
+  /// the attribute itself.
+  /// This is used to limit optimizations which cannot reason
+  /// about the control flow of such functions.
+  bool ExposesReturnsTwice = false;
+
+  /// True if the function includes any inline assembly.
+  bool HasInlineAsm = false;
+
+  /// True if any WinCFI instruction have been emitted in this function.
+  bool HasWinCFI = false;
+
+  /// Current high-level properties of the IR of the function (e.g. is in SSA
+  /// form or whether registers have been allocated)
+  MachineFunctionProperties Properties;
+
+  // Allocation management for pseudo source values.
+  std::unique_ptr<PseudoSourceValueManager> PSVManager;
+
+  /// List of moves done by a function's prolog.  Used to construct frame maps
+  /// by debug and exception handling consumers.
+  std::vector<MCCFIInstruction> FrameInstructions;
+
+  /// List of basic blocks immediately following calls to _setjmp. Used to
+  /// construct a table of valid longjmp targets for Windows Control Flow Guard.
+  std::vector<MCSymbol *> LongjmpTargets;
+
+  /// List of basic blocks that are the target of catchrets. Used to construct
+  /// a table of valid targets for Windows EHCont Guard.
+  std::vector<MCSymbol *> CatchretTargets;
+
+  /// \name Exception Handling
+  /// \{
+
+  /// List of LandingPadInfo describing the landing pad information.
+  std::vector<LandingPadInfo> LandingPads;
+
+  /// Map a landing pad's EH symbol to the call site indexes.
+  DenseMap<MCSymbol*, SmallVector<unsigned, 4>> LPadToCallSiteMap;
+
+  /// Map a landing pad to its index.
+  DenseMap<const MachineBasicBlock *, unsigned> WasmLPadToIndexMap;
+
+  /// Map of invoke call site index values to associated begin EH_LABEL.
+  DenseMap<MCSymbol*, unsigned> CallSiteMap;
+
+  /// CodeView label annotations.
+  std::vector<std::pair<MCSymbol *, MDNode *>> CodeViewAnnotations;
+
+  bool CallsEHReturn = false;
+  bool CallsUnwindInit = false;
+  bool HasEHCatchret = false;
+  bool HasEHScopes = false;
+  bool HasEHFunclets = false;
+
+  /// Section Type for basic blocks, only relevant with basic block sections.
+  BasicBlockSection BBSectionsType = BasicBlockSection::None;
+
+  /// List of C++ TypeInfo used.
+  std::vector<const GlobalValue *> TypeInfos;
+
+  /// List of typeids encoding filters used.
+  std::vector<unsigned> FilterIds;
+
+  /// List of the indices in FilterIds corresponding to filter terminators.
+  std::vector<unsigned> FilterEnds;
+
+  EHPersonality PersonalityTypeCache = EHPersonality::Unknown;
+
+  /// \}
+
+  /// Clear all the members of this MachineFunction, but the ones used
+  /// to initialize again the MachineFunction.
+  /// More specifically, this deallocates all the dynamically allocated
+  /// objects and get rid of all the XXXInfo data structure, but keep
+  /// unchanged the references to Fn, Target, MMI, and FunctionNumber.
+  void clear();
+  /// Allocate and initialize the different members.
+  /// In particular, the XXXInfo data structure.
+  /// \pre Fn, Target, MMI, and FunctionNumber are properly set.
+  void init();
+
+public:
+  struct VariableDbgInfo {
+    const DILocalVariable *Var;
+    const DIExpression *Expr;
+    // The Slot can be negative for fixed stack objects.
+    int Slot;
+    const DILocation *Loc;
+
+    VariableDbgInfo(const DILocalVariable *Var, const DIExpression *Expr,
+                    int Slot, const DILocation *Loc)
+        : Var(Var), Expr(Expr), Slot(Slot), Loc(Loc) {}
+  };
+
+  class Delegate {
+    virtual void anchor();
+
+  public:
+    virtual ~Delegate() = default;
+    /// Callback after an insertion. This should not modify the MI directly.
+    virtual void MF_HandleInsertion(MachineInstr &MI) = 0;
+    /// Callback before a removal. This should not modify the MI directly.
+    virtual void MF_HandleRemoval(MachineInstr &MI) = 0;
+  };
+
+  /// Structure used to represent pair of argument number after call lowering
+  /// and register used to transfer that argument.
+  /// For now we support only cases when argument is transferred through one
+  /// register.
+  struct ArgRegPair {
+    Register Reg;
+    uint16_t ArgNo;
+    ArgRegPair(Register R, unsigned Arg) : Reg(R), ArgNo(Arg) {
+      assert(Arg < (1 << 16) && "Arg out of range");
+    }
+  };
+  /// Vector of call argument and its forwarding register.
+  using CallSiteInfo = SmallVector<ArgRegPair, 1>;
+  using CallSiteInfoImpl = SmallVectorImpl<ArgRegPair>;
+
+private:
+  Delegate *TheDelegate = nullptr;
+  GISelChangeObserver *Observer = nullptr;
+
+  using CallSiteInfoMap = DenseMap<const MachineInstr *, CallSiteInfo>;
+  /// Map a call instruction to call site arguments forwarding info.
+  CallSiteInfoMap CallSitesInfo;
+
+  /// A helper function that returns call site info for a give call
+  /// instruction if debug entry value support is enabled.
+  CallSiteInfoMap::iterator getCallSiteInfo(const MachineInstr *MI);
+
+  // Callbacks for insertion and removal.
+  void handleInsertion(MachineInstr &MI);
+  void handleRemoval(MachineInstr &MI);
+  friend struct ilist_traits<MachineInstr>;
+
+public:
+  using VariableDbgInfoMapTy = SmallVector<VariableDbgInfo, 4>;
+  VariableDbgInfoMapTy VariableDbgInfos;
+
+  /// A count of how many instructions in the function have had numbers
+  /// assigned to them. Used for debug value tracking, to determine the
+  /// next instruction number.
+  unsigned DebugInstrNumberingCount = 0;
+
+  /// Set value of DebugInstrNumberingCount field. Avoid using this unless
+  /// you're deserializing this data.
+  void setDebugInstrNumberingCount(unsigned Num);
+
+  /// Pair of instruction number and operand number.
+  using DebugInstrOperandPair = std::pair<unsigned, unsigned>;
+
+  /// Replacement definition for a debug instruction reference. Made up of a
+  /// source instruction / operand pair, destination pair, and a qualifying
+  /// subregister indicating what bits in the operand make up the substitution.
+  // For example, a debug user
+  /// of %1:
+  ///    %0:gr32 = someinst, debug-instr-number 1
+  ///    %1:gr16 = %0.some_16_bit_subreg, debug-instr-number 2
+  /// Would receive the substitution {{2, 0}, {1, 0}, $subreg}, where $subreg is
+  /// the subregister number for some_16_bit_subreg.
+  class DebugSubstitution {
+  public:
+    DebugInstrOperandPair Src;  ///< Source instruction / operand pair.
+    DebugInstrOperandPair Dest; ///< Replacement instruction / operand pair.
+    unsigned Subreg;            ///< Qualifier for which part of Dest is read.
+
+    DebugSubstitution(const DebugInstrOperandPair &Src,
+                      const DebugInstrOperandPair &Dest, unsigned Subreg)
+        : Src(Src), Dest(Dest), Subreg(Subreg) {}
+
+    /// Order only by source instruction / operand pair: there should never
+    /// be duplicate entries for the same source in any collection.
+    bool operator<(const DebugSubstitution &Other) const {
+      return Src < Other.Src;
+    }
+  };
+
+  /// Debug value substitutions: a collection of DebugSubstitution objects,
+  /// recording changes in where a value is defined. For example, when one
+  /// instruction is substituted for another. Keeping a record allows recovery
+  /// of variable locations after compilation finishes.
+  SmallVector<DebugSubstitution, 8> DebugValueSubstitutions;
+
+  /// Location of a PHI instruction that is also a debug-info variable value,
+  /// for the duration of register allocation. Loaded by the PHI-elimination
+  /// pass, and emitted as DBG_PHI instructions during VirtRegRewriter, with
+  /// maintenance applied by intermediate passes that edit registers (such as
+  /// coalescing and the allocator passes).
+  class DebugPHIRegallocPos {
+  public:
+    MachineBasicBlock *MBB; ///< Block where this PHI was originally located.
+    Register Reg;           ///< VReg where the control-flow-merge happens.
+    unsigned SubReg;        ///< Optional subreg qualifier within Reg.
+    DebugPHIRegallocPos(MachineBasicBlock *MBB, Register Reg, unsigned SubReg)
+        : MBB(MBB), Reg(Reg), SubReg(SubReg) {}
+  };
+
+  /// Map of debug instruction numbers to the position of their PHI instructions
+  /// during register allocation. See DebugPHIRegallocPos.
+  DenseMap<unsigned, DebugPHIRegallocPos> DebugPHIPositions;
+
+  /// Create a substitution between one <instr,operand> value to a different,
+  /// new value.
+  void makeDebugValueSubstitution(DebugInstrOperandPair, DebugInstrOperandPair,
+                                  unsigned SubReg = 0);
+
+  /// Create substitutions for any tracked values in \p Old, to point at
+  /// \p New. Needed when we re-create an instruction during optimization,
+  /// which has the same signature (i.e., def operands in the same place) but
+  /// a modified instruction type, flags, or otherwise. An example: X86 moves
+  /// are sometimes transformed into equivalent LEAs.
+  /// If the two instructions are not the same opcode, limit which operands to
+  /// examine for substitutions to the first N operands by setting
+  /// \p MaxOperand.
+  void substituteDebugValuesForInst(const MachineInstr &Old, MachineInstr &New,
+                                    unsigned MaxOperand = UINT_MAX);
+
+  /// Find the underlying  defining instruction / operand for a COPY instruction
+  /// while in SSA form. Copies do not actually define values -- they move them
+  /// between registers. Labelling a COPY-like instruction with an instruction
+  /// number is to be avoided as it makes value numbers non-unique later in
+  /// compilation. This method follows the definition chain for any sequence of
+  /// COPY-like instructions to find whatever non-COPY-like instruction defines
+  /// the copied value; or for parameters, creates a DBG_PHI on entry.
+  /// May insert instructions into the entry block!
+  /// \p MI The copy-like instruction to salvage.
+  /// \returns An instruction/operand pair identifying the defining value.
+  DebugInstrOperandPair salvageCopySSA(MachineInstr &MI);
+
+  /// Finalise any partially emitted debug instructions. These are DBG_INSTR_REF
+  /// instructions where we only knew the vreg of the value they use, not the
+  /// instruction that defines that vreg. Once isel finishes, we should have
+  /// enough information for every DBG_INSTR_REF to point at an instruction
+  /// (or DBG_PHI).
+  void finalizeDebugInstrRefs();
+
+  /// Returns true if the function's variable locations should be tracked with
+  /// instruction referencing.
+  bool useDebugInstrRef() const;
+
+  /// A reserved operand number representing the instructions memory operand,
+  /// for instructions that have a stack spill fused into them.
+  const static unsigned int DebugOperandMemNumber;
+
+  MachineFunction(Function &F, const LLVMTargetMachine &Target,
+                  const TargetSubtargetInfo &STI, unsigned FunctionNum,
+                  MachineModuleInfo &MMI);
+  MachineFunction(const MachineFunction &) = delete;
+  MachineFunction &operator=(const MachineFunction &) = delete;
+  ~MachineFunction();
+
+  /// Reset the instance as if it was just created.
+  void reset() {
+    clear();
+    init();
+  }
+
+  /// Reset the currently registered delegate - otherwise assert.
+  void resetDelegate(Delegate *delegate) {
+    assert(TheDelegate == delegate &&
+           "Only the current delegate can perform reset!");
+    TheDelegate = nullptr;
+  }
+
+  /// Set the delegate. resetDelegate must be called before attempting
+  /// to set.
+  void setDelegate(Delegate *delegate) {
+    assert(delegate && !TheDelegate &&
+           "Attempted to set delegate to null, or to change it without "
+           "first resetting it!");
+
+    TheDelegate = delegate;
+  }
+
+  void setObserver(GISelChangeObserver *O) { Observer = O; }
+
+  GISelChangeObserver *getObserver() const { return Observer; }
+
+  MachineModuleInfo &getMMI() const { return MMI; }
+  MCContext &getContext() const { return Ctx; }
+
+  /// Returns the Section this function belongs to.
+  MCSection *getSection() const { return Section; }
+
+  /// Indicates the Section this function belongs to.
+  void setSection(MCSection *S) { Section = S; }
+
+  PseudoSourceValueManager &getPSVManager() const { return *PSVManager; }
+
+  /// Return the DataLayout attached to the Module associated to this MF.
+  const DataLayout &getDataLayout() const;
+
+  /// Return the LLVM function that this machine code represents
+  Function &getFunction() { return F; }
+
+  /// Return the LLVM function that this machine code represents
+  const Function &getFunction() const { return F; }
+
+  /// getName - Return the name of the corresponding LLVM function.
+  StringRef getName() const;
+
+  /// getFunctionNumber - Return a unique ID for the current function.
+  unsigned getFunctionNumber() const { return FunctionNumber; }
+
+  /// Returns true if this function has basic block sections enabled.
+  bool hasBBSections() const {
+    return (BBSectionsType == BasicBlockSection::All ||
+            BBSectionsType == BasicBlockSection::List ||
+            BBSectionsType == BasicBlockSection::Preset);
+  }
+
+  /// Returns true if basic block labels are to be generated for this function.
+  bool hasBBLabels() const {
+    return BBSectionsType == BasicBlockSection::Labels;
+  }
+
+  void setBBSectionsType(BasicBlockSection V) { BBSectionsType = V; }
+
+  /// Assign IsBeginSection IsEndSection fields for basic blocks in this
+  /// function.
+  void assignBeginEndSections();
+
+  /// getTarget - Return the target machine this machine code is compiled with
+  const LLVMTargetMachine &getTarget() const { return Target; }
+
+  /// getSubtarget - Return the subtarget for which this machine code is being
+  /// compiled.
+  const TargetSubtargetInfo &getSubtarget() const { return *STI; }
+
+  /// getSubtarget - This method returns a pointer to the specified type of
+  /// TargetSubtargetInfo.  In debug builds, it verifies that the object being
+  /// returned is of the correct type.
+  template<typename STC> const STC &getSubtarget() const {
+    return *static_cast<const STC *>(STI);
+  }
+
+  /// getRegInfo - Return information about the registers currently in use.
+  MachineRegisterInfo &getRegInfo() { return *RegInfo; }
+  const MachineRegisterInfo &getRegInfo() const { return *RegInfo; }
+
+  /// getFrameInfo - Return the frame info object for the current function.
+  /// This object contains information about objects allocated on the stack
+  /// frame of the current function in an abstract way.
+  MachineFrameInfo &getFrameInfo() { return *FrameInfo; }
+  const MachineFrameInfo &getFrameInfo() const { return *FrameInfo; }
+
+  /// getJumpTableInfo - Return the jump table info object for the current
+  /// function.  This object contains information about jump tables in the
+  /// current function.  If the current function has no jump tables, this will
+  /// return null.
+  const MachineJumpTableInfo *getJumpTableInfo() const { return JumpTableInfo; }
+  MachineJumpTableInfo *getJumpTableInfo() { return JumpTableInfo; }
+
+  /// getOrCreateJumpTableInfo - Get the JumpTableInfo for this function, if it
+  /// does already exist, allocate one.
+  MachineJumpTableInfo *getOrCreateJumpTableInfo(unsigned JTEntryKind);
+
+  /// getConstantPool - Return the constant pool object for the current
+  /// function.
+  MachineConstantPool *getConstantPool() { return ConstantPool; }
+  const MachineConstantPool *getConstantPool() const { return ConstantPool; }
+
+  /// getWasmEHFuncInfo - Return information about how the current function uses
+  /// Wasm exception handling. Returns null for functions that don't use wasm
+  /// exception handling.
+  const WasmEHFuncInfo *getWasmEHFuncInfo() const { return WasmEHInfo; }
+  WasmEHFuncInfo *getWasmEHFuncInfo() { return WasmEHInfo; }
+
+  /// getWinEHFuncInfo - Return information about how the current function uses
+  /// Windows exception handling. Returns null for functions that don't use
+  /// funclets for exception handling.
+  const WinEHFuncInfo *getWinEHFuncInfo() const { return WinEHInfo; }
+  WinEHFuncInfo *getWinEHFuncInfo() { return WinEHInfo; }
+
+  /// getAlignment - Return the alignment of the function.
+  Align getAlignment() const { return Alignment; }
+
+  /// setAlignment - Set the alignment of the function.
+  void setAlignment(Align A) { Alignment = A; }
+
+  /// ensureAlignment - Make sure the function is at least A bytes aligned.
+  void ensureAlignment(Align A) {
+    if (Alignment < A)
+      Alignment = A;
+  }
+
+  /// exposesReturnsTwice - Returns true if the function calls setjmp or
+  /// any other similar functions with attribute "returns twice" without
+  /// having the attribute itself.
+  bool exposesReturnsTwice() const {
+    return ExposesReturnsTwice;
+  }
+
+  /// setCallsSetJmp - Set a flag that indicates if there's a call to
+  /// a "returns twice" function.
+  void setExposesReturnsTwice(bool B) {
+    ExposesReturnsTwice = B;
+  }
+
+  /// Returns true if the function contains any inline assembly.
+  bool hasInlineAsm() const {
+    return HasInlineAsm;
+  }
+
+  /// Set a flag that indicates that the function contains inline assembly.
+  void setHasInlineAsm(bool B) {
+    HasInlineAsm = B;
+  }
+
+  bool hasWinCFI() const {
+    return HasWinCFI;
+  }
+  void setHasWinCFI(bool v) { HasWinCFI = v; }
+
+  /// True if this function needs frame moves for debug or exceptions.
+  bool needsFrameMoves() const;
+
+  /// Get the function properties
+  const MachineFunctionProperties &getProperties() const { return Properties; }
+  MachineFunctionProperties &getProperties() { return Properties; }
+
+  /// getInfo - Keep track of various per-function pieces of information for
+  /// backends that would like to do so.
+  ///
+  template<typename Ty>
+  Ty *getInfo() {
+    if (!MFInfo)
+      MFInfo = Ty::template create<Ty>(Allocator, *this);
+    return static_cast<Ty*>(MFInfo);
+  }
+
+  template<typename Ty>
+  const Ty *getInfo() const {
+     return const_cast<MachineFunction*>(this)->getInfo<Ty>();
+  }
+
+  /// Returns the denormal handling type for the default rounding mode of the
+  /// function.
+  DenormalMode getDenormalMode(const fltSemantics &FPType) const;
+
+  /// getBlockNumbered - MachineBasicBlocks are automatically numbered when they
+  /// are inserted into the machine function.  The block number for a machine
+  /// basic block can be found by using the MBB::getNumber method, this method
+  /// provides the inverse mapping.
+  MachineBasicBlock *getBlockNumbered(unsigned N) const {
+    assert(N < MBBNumbering.size() && "Illegal block number");
+    assert(MBBNumbering[N] && "Block was removed from the machine function!");
+    return MBBNumbering[N];
+  }
+
+  /// Should we be emitting segmented stack stuff for the function
+  bool shouldSplitStack() const;
+
+  /// getNumBlockIDs - Return the number of MBB ID's allocated.
+  unsigned getNumBlockIDs() const { return (unsigned)MBBNumbering.size(); }
+
+  /// RenumberBlocks - This discards all of the MachineBasicBlock numbers and
+  /// recomputes them.  This guarantees that the MBB numbers are sequential,
+  /// dense, and match the ordering of the blocks within the function.  If a
+  /// specific MachineBasicBlock is specified, only that block and those after
+  /// it are renumbered.
+  void RenumberBlocks(MachineBasicBlock *MBBFrom = nullptr);
+
+  /// print - Print out the MachineFunction in a format suitable for debugging
+  /// to the specified stream.
+  void print(raw_ostream &OS, const SlotIndexes* = nullptr) const;
+
+  /// viewCFG - This function is meant for use from the debugger.  You can just
+  /// say 'call F->viewCFG()' and a ghostview window should pop up from the
+  /// program, displaying the CFG of the current function with the code for each
+  /// basic block inside.  This depends on there being a 'dot' and 'gv' program
+  /// in your path.
+  void viewCFG() const;
+
+  /// viewCFGOnly - This function is meant for use from the debugger.  It works
+  /// just like viewCFG, but it does not include the contents of basic blocks
+  /// into the nodes, just the label.  If you are only interested in the CFG
+  /// this can make the graph smaller.
+  ///
+  void viewCFGOnly() const;
+
+  /// dump - Print the current MachineFunction to cerr, useful for debugger use.
+  void dump() const;
+
+  /// Run the current MachineFunction through the machine code verifier, useful
+  /// for debugger use.
+  /// \returns true if no problems were found.
+  bool verify(Pass *p = nullptr, const char *Banner = nullptr,
+              bool AbortOnError = true) const;
+
+  // Provide accessors for the MachineBasicBlock list...
+  using iterator = BasicBlockListType::iterator;
+  using const_iterator = BasicBlockListType::const_iterator;
+  using const_reverse_iterator = BasicBlockListType::const_reverse_iterator;
+  using reverse_iterator = BasicBlockListType::reverse_iterator;
+
+  /// Support for MachineBasicBlock::getNextNode().
+  static BasicBlockListType MachineFunction::*
+  getSublistAccess(MachineBasicBlock *) {
+    return &MachineFunction::BasicBlocks;
+  }
+
+  /// addLiveIn - Add the specified physical register as a live-in value and
+  /// create a corresponding virtual register for it.
+  Register addLiveIn(MCRegister PReg, const TargetRegisterClass *RC);
+
+  //===--------------------------------------------------------------------===//
+  // BasicBlock accessor functions.
+  //
+  iterator                 begin()       { return BasicBlocks.begin(); }
+  const_iterator           begin() const { return BasicBlocks.begin(); }
+  iterator                 end  ()       { return BasicBlocks.end();   }
+  const_iterator           end  () const { return BasicBlocks.end();   }
+
+  reverse_iterator        rbegin()       { return BasicBlocks.rbegin(); }
+  const_reverse_iterator  rbegin() const { return BasicBlocks.rbegin(); }
+  reverse_iterator        rend  ()       { return BasicBlocks.rend();   }
+  const_reverse_iterator  rend  () const { return BasicBlocks.rend();   }
+
+  unsigned                  size() const { return (unsigned)BasicBlocks.size();}
+  bool                     empty() const { return BasicBlocks.empty(); }
+  const MachineBasicBlock &front() const { return BasicBlocks.front(); }
+        MachineBasicBlock &front()       { return BasicBlocks.front(); }
+  const MachineBasicBlock & back() const { return BasicBlocks.back(); }
+        MachineBasicBlock & back()       { return BasicBlocks.back(); }
+
+  void push_back (MachineBasicBlock *MBB) { BasicBlocks.push_back (MBB); }
+  void push_front(MachineBasicBlock *MBB) { BasicBlocks.push_front(MBB); }
+  void insert(iterator MBBI, MachineBasicBlock *MBB) {
+    BasicBlocks.insert(MBBI, MBB);
+  }
+  void splice(iterator InsertPt, iterator MBBI) {
+    BasicBlocks.splice(InsertPt, BasicBlocks, MBBI);
+  }
+  void splice(iterator InsertPt, MachineBasicBlock *MBB) {
+    BasicBlocks.splice(InsertPt, BasicBlocks, MBB);
+  }
+  void splice(iterator InsertPt, iterator MBBI, iterator MBBE) {
+    BasicBlocks.splice(InsertPt, BasicBlocks, MBBI, MBBE);
+  }
+
+  void remove(iterator MBBI) { BasicBlocks.remove(MBBI); }
+  void remove(MachineBasicBlock *MBBI) { BasicBlocks.remove(MBBI); }
+  void erase(iterator MBBI) { BasicBlocks.erase(MBBI); }
+  void erase(MachineBasicBlock *MBBI) { BasicBlocks.erase(MBBI); }
+
+  template <typename Comp>
+  void sort(Comp comp) {
+    BasicBlocks.sort(comp);
+  }
+
+  /// Return the number of \p MachineInstrs in this \p MachineFunction.
+  unsigned getInstructionCount() const {
+    unsigned InstrCount = 0;
+    for (const MachineBasicBlock &MBB : BasicBlocks)
+      InstrCount += MBB.size();
+    return InstrCount;
+  }
+
+  //===--------------------------------------------------------------------===//
+  // Internal functions used to automatically number MachineBasicBlocks
+
+  /// Adds the MBB to the internal numbering. Returns the unique number
+  /// assigned to the MBB.
+  unsigned addToMBBNumbering(MachineBasicBlock *MBB) {
+    MBBNumbering.push_back(MBB);
+    return (unsigned)MBBNumbering.size()-1;
+  }
+
+  /// removeFromMBBNumbering - Remove the specific machine basic block from our
+  /// tracker, this is only really to be used by the MachineBasicBlock
+  /// implementation.
+  void removeFromMBBNumbering(unsigned N) {
+    assert(N < MBBNumbering.size() && "Illegal basic block #");
+    MBBNumbering[N] = nullptr;
+  }
+
+  /// CreateMachineInstr - Allocate a new MachineInstr. Use this instead
+  /// of `new MachineInstr'.
+  MachineInstr *CreateMachineInstr(const MCInstrDesc &MCID, DebugLoc DL,
+                                   bool NoImplicit = false);
+
+  /// Create a new MachineInstr which is a copy of \p Orig, identical in all
+  /// ways except the instruction has no parent, prev, or next. Bundling flags
+  /// are reset.
+  ///
+  /// Note: Clones a single instruction, not whole instruction bundles.
+  /// Does not perform target specific adjustments; consider using
+  /// TargetInstrInfo::duplicate() instead.
+  MachineInstr *CloneMachineInstr(const MachineInstr *Orig);
+
+  /// Clones instruction or the whole instruction bundle \p Orig and insert
+  /// into \p MBB before \p InsertBefore.
+  ///
+  /// Note: Does not perform target specific adjustments; consider using
+  /// TargetInstrInfo::duplicate() intead.
+  MachineInstr &
+  cloneMachineInstrBundle(MachineBasicBlock &MBB,
+                          MachineBasicBlock::iterator InsertBefore,
+                          const MachineInstr &Orig);
+
+  /// DeleteMachineInstr - Delete the given MachineInstr.
+  void deleteMachineInstr(MachineInstr *MI);
+
+  /// CreateMachineBasicBlock - Allocate a new MachineBasicBlock. Use this
+  /// instead of `new MachineBasicBlock'.
+  MachineBasicBlock *CreateMachineBasicBlock(const BasicBlock *bb = nullptr);
+
+  /// DeleteMachineBasicBlock - Delete the given MachineBasicBlock.
+  void deleteMachineBasicBlock(MachineBasicBlock *MBB);
+
+  /// getMachineMemOperand - Allocate a new MachineMemOperand.
+  /// MachineMemOperands are owned by the MachineFunction and need not be
+  /// explicitly deallocated.
+  MachineMemOperand *getMachineMemOperand(
+      MachinePointerInfo PtrInfo, MachineMemOperand::Flags f, uint64_t s,
+      Align base_alignment, const AAMDNodes &AAInfo = AAMDNodes(),
+      const MDNode *Ranges = nullptr, SyncScope::ID SSID = SyncScope::System,
+      AtomicOrdering Ordering = AtomicOrdering::NotAtomic,
+      AtomicOrdering FailureOrdering = AtomicOrdering::NotAtomic);
+
+  MachineMemOperand *getMachineMemOperand(
+      MachinePointerInfo PtrInfo, MachineMemOperand::Flags f, LLT MemTy,
+      Align base_alignment, const AAMDNodes &AAInfo = AAMDNodes(),
+      const MDNode *Ranges = nullptr, SyncScope::ID SSID = SyncScope::System,
+      AtomicOrdering Ordering = AtomicOrdering::NotAtomic,
+      AtomicOrdering FailureOrdering = AtomicOrdering::NotAtomic);
+
+  /// getMachineMemOperand - Allocate a new MachineMemOperand by copying
+  /// an existing one, adjusting by an offset and using the given size.
+  /// MachineMemOperands are owned by the MachineFunction and need not be
+  /// explicitly deallocated.
+  MachineMemOperand *getMachineMemOperand(const MachineMemOperand *MMO,
+                                          int64_t Offset, LLT Ty);
+  MachineMemOperand *getMachineMemOperand(const MachineMemOperand *MMO,
+                                          int64_t Offset, uint64_t Size) {
+    return getMachineMemOperand(
+        MMO, Offset, Size == ~UINT64_C(0) ? LLT() : LLT::scalar(8 * Size));
+  }
+
+  /// getMachineMemOperand - Allocate a new MachineMemOperand by copying
+  /// an existing one, replacing only the MachinePointerInfo and size.
+  /// MachineMemOperands are owned by the MachineFunction and need not be
+  /// explicitly deallocated.
+  MachineMemOperand *getMachineMemOperand(const MachineMemOperand *MMO,
+                                          const MachinePointerInfo &PtrInfo,
+                                          uint64_t Size);
+  MachineMemOperand *getMachineMemOperand(const MachineMemOperand *MMO,
+                                          const MachinePointerInfo &PtrInfo,
+                                          LLT Ty);
+
+  /// Allocate a new MachineMemOperand by copying an existing one,
+  /// replacing only AliasAnalysis information. MachineMemOperands are owned
+  /// by the MachineFunction and need not be explicitly deallocated.
+  MachineMemOperand *getMachineMemOperand(const MachineMemOperand *MMO,
+                                          const AAMDNodes &AAInfo);
+
+  /// Allocate a new MachineMemOperand by copying an existing one,
+  /// replacing the flags. MachineMemOperands are owned
+  /// by the MachineFunction and need not be explicitly deallocated.
+  MachineMemOperand *getMachineMemOperand(const MachineMemOperand *MMO,
+                                          MachineMemOperand::Flags Flags);
+
+  using OperandCapacity = ArrayRecycler<MachineOperand>::Capacity;
+
+  /// Allocate an array of MachineOperands. This is only intended for use by
+  /// internal MachineInstr functions.
+  MachineOperand *allocateOperandArray(OperandCapacity Cap) {
+    return OperandRecycler.allocate(Cap, Allocator);
+  }
+
+  /// Dellocate an array of MachineOperands and recycle the memory. This is
+  /// only intended for use by internal MachineInstr functions.
+  /// Cap must be the same capacity that was used to allocate the array.
+  void deallocateOperandArray(OperandCapacity Cap, MachineOperand *Array) {
+    OperandRecycler.deallocate(Cap, Array);
+  }
+
+  /// Allocate and initialize a register mask with @p NumRegister bits.
+  uint32_t *allocateRegMask();
+
+  ArrayRef<int> allocateShuffleMask(ArrayRef<int> Mask);
+
+  /// Allocate and construct an extra info structure for a `MachineInstr`.
+  ///
+  /// This is allocated on the function's allocator and so lives the life of
+  /// the function.
+  MachineInstr::ExtraInfo *createMIExtraInfo(
+      ArrayRef<MachineMemOperand *> MMOs, MCSymbol *PreInstrSymbol = nullptr,
+      MCSymbol *PostInstrSymbol = nullptr, MDNode *HeapAllocMarker = nullptr);
+
+  /// Allocate a string and populate it with the given external symbol name.
+  const char *createExternalSymbolName(StringRef Name);
+
+  //===--------------------------------------------------------------------===//
+  // Label Manipulation.
+
+  /// getJTISymbol - Return the MCSymbol for the specified non-empty jump table.
+  /// If isLinkerPrivate is specified, an 'l' label is returned, otherwise a
+  /// normal 'L' label is returned.
+  MCSymbol *getJTISymbol(unsigned JTI, MCContext &Ctx,
+                         bool isLinkerPrivate = false) const;
+
+  /// getPICBaseSymbol - Return a function-local symbol to represent the PIC
+  /// base.
+  MCSymbol *getPICBaseSymbol() const;
+
+  /// Returns a reference to a list of cfi instructions in the function's
+  /// prologue.  Used to construct frame maps for debug and exception handling
+  /// comsumers.
+  const std::vector<MCCFIInstruction> &getFrameInstructions() const {
+    return FrameInstructions;
+  }
+
+  LLVM_NODISCARD unsigned addFrameInst(const MCCFIInstruction &Inst);
+
+  /// Returns a reference to a list of symbols immediately following calls to
+  /// _setjmp in the function. Used to construct the longjmp target table used
+  /// by Windows Control Flow Guard.
+  const std::vector<MCSymbol *> &getLongjmpTargets() const {
+    return LongjmpTargets;
+  }
+
+  /// Add the specified symbol to the list of valid longjmp targets for Windows
+  /// Control Flow Guard.
+  void addLongjmpTarget(MCSymbol *Target) { LongjmpTargets.push_back(Target); }
+
+  /// Returns a reference to a list of symbols that we have catchrets.
+  /// Used to construct the catchret target table used by Windows EHCont Guard.
+  const std::vector<MCSymbol *> &getCatchretTargets() const {
+    return CatchretTargets;
+  }
+
+  /// Add the specified symbol to the list of valid catchret targets for Windows
+  /// EHCont Guard.
+  void addCatchretTarget(MCSymbol *Target) {
+    CatchretTargets.push_back(Target);
+  }
+
+  /// \name Exception Handling
+  /// \{
+
+  bool callsEHReturn() const { return CallsEHReturn; }
+  void setCallsEHReturn(bool b) { CallsEHReturn = b; }
+
+  bool callsUnwindInit() const { return CallsUnwindInit; }
+  void setCallsUnwindInit(bool b) { CallsUnwindInit = b; }
+
+  bool hasEHCatchret() const { return HasEHCatchret; }
+  void setHasEHCatchret(bool V) { HasEHCatchret = V; }
+
+  bool hasEHScopes() const { return HasEHScopes; }
+  void setHasEHScopes(bool V) { HasEHScopes = V; }
+
+  bool hasEHFunclets() const { return HasEHFunclets; }
+  void setHasEHFunclets(bool V) { HasEHFunclets = V; }
+
+  /// Find or create an LandingPadInfo for the specified MachineBasicBlock.
+  LandingPadInfo &getOrCreateLandingPadInfo(MachineBasicBlock *LandingPad);
+
+  /// Remap landing pad labels and remove any deleted landing pads.
+  void tidyLandingPads(DenseMap<MCSymbol *, uintptr_t> *LPMap = nullptr,
+                       bool TidyIfNoBeginLabels = true);
+
+  /// Return a reference to the landing pad info for the current function.
+  const std::vector<LandingPadInfo> &getLandingPads() const {
+    return LandingPads;
+  }
+
+  /// Provide the begin and end labels of an invoke style call and associate it
+  /// with a try landing pad block.
+  void addInvoke(MachineBasicBlock *LandingPad,
+                 MCSymbol *BeginLabel, MCSymbol *EndLabel);
+
+  /// Add a new panding pad, and extract the exception handling information from
+  /// the landingpad instruction. Returns the label ID for the landing pad
+  /// entry.
+  MCSymbol *addLandingPad(MachineBasicBlock *LandingPad);
+
+  /// Provide the catch typeinfo for a landing pad.
+  void addCatchTypeInfo(MachineBasicBlock *LandingPad,
+                        ArrayRef<const GlobalValue *> TyInfo);
+
+  /// Provide the filter typeinfo for a landing pad.
+  void addFilterTypeInfo(MachineBasicBlock *LandingPad,
+                         ArrayRef<const GlobalValue *> TyInfo);
+
+  /// Add a cleanup action for a landing pad.
+  void addCleanup(MachineBasicBlock *LandingPad);
+
+  void addSEHCatchHandler(MachineBasicBlock *LandingPad, const Function *Filter,
+                          const BlockAddress *RecoverBA);
+
+  void addSEHCleanupHandler(MachineBasicBlock *LandingPad,
+                            const Function *Cleanup);
+
+  /// Return the type id for the specified typeinfo.  This is function wide.
+  unsigned getTypeIDFor(const GlobalValue *TI);
+
+  /// Return the id of the filter encoded by TyIds.  This is function wide.
+  int getFilterIDFor(std::vector<unsigned> &TyIds);
+
+  /// Map the landing pad's EH symbol to the call site indexes.
+  void setCallSiteLandingPad(MCSymbol *Sym, ArrayRef<unsigned> Sites);
+
+  /// Map the landing pad to its index. Used for Wasm exception handling.
+  void setWasmLandingPadIndex(const MachineBasicBlock *LPad, unsigned Index) {
+    WasmLPadToIndexMap[LPad] = Index;
+  }
+
+  /// Returns true if the landing pad has an associate index in wasm EH.
+  bool hasWasmLandingPadIndex(const MachineBasicBlock *LPad) const {
+    return WasmLPadToIndexMap.count(LPad);
+  }
+
+  /// Get the index in wasm EH for a given landing pad.
+  unsigned getWasmLandingPadIndex(const MachineBasicBlock *LPad) const {
+    assert(hasWasmLandingPadIndex(LPad));
+    return WasmLPadToIndexMap.lookup(LPad);
+  }
+
+  /// Get the call site indexes for a landing pad EH symbol.
+  SmallVectorImpl<unsigned> &getCallSiteLandingPad(MCSymbol *Sym) {
+    assert(hasCallSiteLandingPad(Sym) &&
+           "missing call site number for landing pad!");
+    return LPadToCallSiteMap[Sym];
+  }
+
+  /// Return true if the landing pad Eh symbol has an associated call site.
+  bool hasCallSiteLandingPad(MCSymbol *Sym) {
+    return !LPadToCallSiteMap[Sym].empty();
+  }
+
+  /// Map the begin label for a call site.
+  void setCallSiteBeginLabel(MCSymbol *BeginLabel, unsigned Site) {
+    CallSiteMap[BeginLabel] = Site;
+  }
+
+  /// Get the call site number for a begin label.
+  unsigned getCallSiteBeginLabel(MCSymbol *BeginLabel) const {
+    assert(hasCallSiteBeginLabel(BeginLabel) &&
+           "Missing call site number for EH_LABEL!");
+    return CallSiteMap.lookup(BeginLabel);
+  }
+
+  /// Return true if the begin label has a call site number associated with it.
+  bool hasCallSiteBeginLabel(MCSymbol *BeginLabel) const {
+    return CallSiteMap.count(BeginLabel);
+  }
+
+  /// Record annotations associated with a particular label.
+  void addCodeViewAnnotation(MCSymbol *Label, MDNode *MD) {
+    CodeViewAnnotations.push_back({Label, MD});
+  }
+
+  ArrayRef<std::pair<MCSymbol *, MDNode *>> getCodeViewAnnotations() const {
+    return CodeViewAnnotations;
+  }
+
+  /// Return a reference to the C++ typeinfo for the current function.
+  const std::vector<const GlobalValue *> &getTypeInfos() const {
+    return TypeInfos;
+  }
+
+  /// Return a reference to the typeids encoding filters used in the current
+  /// function.
+  const std::vector<unsigned> &getFilterIds() const {
+    return FilterIds;
+  }
+
+  /// \}
+
+  /// Collect information used to emit debugging information of a variable.
+  void setVariableDbgInfo(const DILocalVariable *Var, const DIExpression *Expr,
+                          int Slot, const DILocation *Loc) {
+    VariableDbgInfos.emplace_back(Var, Expr, Slot, Loc);
+  }
+
+  VariableDbgInfoMapTy &getVariableDbgInfo() { return VariableDbgInfos; }
+  const VariableDbgInfoMapTy &getVariableDbgInfo() const {
+    return VariableDbgInfos;
+  }
+
+  /// Start tracking the arguments passed to the call \p CallI.
+  void addCallArgsForwardingRegs(const MachineInstr *CallI,
+                                 CallSiteInfoImpl &&CallInfo) {
+    assert(CallI->isCandidateForCallSiteEntry());
+    bool Inserted =
+        CallSitesInfo.try_emplace(CallI, std::move(CallInfo)).second;
+    (void)Inserted;
+    assert(Inserted && "Call site info not unique");
+  }
+
+  const CallSiteInfoMap &getCallSitesInfo() const {
+    return CallSitesInfo;
+  }
+
+  /// Following functions update call site info. They should be called before
+  /// removing, replacing or copying call instruction.
+
+  /// Erase the call site info for \p MI. It is used to remove a call
+  /// instruction from the instruction stream.
+  void eraseCallSiteInfo(const MachineInstr *MI);
+  /// Copy the call site info from \p Old to \ New. Its usage is when we are
+  /// making a copy of the instruction that will be inserted at different point
+  /// of the instruction stream.
+  void copyCallSiteInfo(const MachineInstr *Old,
+                        const MachineInstr *New);
+
+  const std::vector<char> &getBBSectionsSymbolPrefix() const {
+    return BBSectionsSymbolPrefix;
+  }
+
+  /// Move the call site info from \p Old to \New call site info. This function
+  /// is used when we are replacing one call instruction with another one to
+  /// the same callee.
+  void moveCallSiteInfo(const MachineInstr *Old,
+                        const MachineInstr *New);
+
+  unsigned getNewDebugInstrNum() {
+    return ++DebugInstrNumberingCount;
+  }
+};
+
+//===--------------------------------------------------------------------===//
+// GraphTraits specializations for function basic block graphs (CFGs)
+//===--------------------------------------------------------------------===//
+
+// Provide specializations of GraphTraits to be able to treat a
+// machine function as a graph of machine basic blocks... these are
+// the same as the machine basic block iterators, except that the root
+// node is implicitly the first node of the function.
+//
+template <> struct GraphTraits<MachineFunction*> :
+  public GraphTraits<MachineBasicBlock*> {
+  static NodeRef getEntryNode(MachineFunction *F) { return &F->front(); }
+
+  // nodes_iterator/begin/end - Allow iteration over all nodes in the graph
+  using nodes_iterator = pointer_iterator<MachineFunction::iterator>;
+
+  static nodes_iterator nodes_begin(MachineFunction *F) {
+    return nodes_iterator(F->begin());
+  }
+
+  static nodes_iterator nodes_end(MachineFunction *F) {
+    return nodes_iterator(F->end());
+  }
+
+  static unsigned       size       (MachineFunction *F) { return F->size(); }
+};
+template <> struct GraphTraits<const MachineFunction*> :
+  public GraphTraits<const MachineBasicBlock*> {
+  static NodeRef getEntryNode(const MachineFunction *F) { return &F->front(); }
+
+  // nodes_iterator/begin/end - Allow iteration over all nodes in the graph
+  using nodes_iterator = pointer_iterator<MachineFunction::const_iterator>;
+
+  static nodes_iterator nodes_begin(const MachineFunction *F) {
+    return nodes_iterator(F->begin());
+  }
+
+  static nodes_iterator nodes_end  (const MachineFunction *F) {
+    return nodes_iterator(F->end());
+  }
+
+  static unsigned       size       (const MachineFunction *F)  {
+    return F->size();
+  }
+};
+
+// Provide specializations of GraphTraits to be able to treat a function as a
+// graph of basic blocks... and to walk it in inverse order.  Inverse order for
+// a function is considered to be when traversing the predecessor edges of a BB
+// instead of the successor edges.
+//
+template <> struct GraphTraits<Inverse<MachineFunction*>> :
+  public GraphTraits<Inverse<MachineBasicBlock*>> {
+  static NodeRef getEntryNode(Inverse<MachineFunction *> G) {
+    return &G.Graph->front();
+  }
+};
+template <> struct GraphTraits<Inverse<const MachineFunction*>> :
+  public GraphTraits<Inverse<const MachineBasicBlock*>> {
+  static NodeRef getEntryNode(Inverse<const MachineFunction *> G) {
+    return &G.Graph->front();
+  }
+};
+
+class MachineFunctionAnalysisManager;
+void verifyMachineFunction(MachineFunctionAnalysisManager *,
+                           const std::string &Banner,
+                           const MachineFunction &MF);
+
+} // end namespace llvm
+
+#endif // LLVM_CODEGEN_MACHINEFUNCTION_H
+
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif