Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 4420 insertions, 0 deletions

diff --git a/gnu/llvm/clang/lib/CodeGen/CodeGenFunction.h b/gnu/llvm/clang/lib/CodeGen/CodeGenFunction.h
new file mode 100644
index 00000000000..3d8bc93eb96
--- /dev/null
+++ b/gnu/llvm/clang/lib/CodeGen/CodeGenFunction.h
@@ -0,0 +1,4420 @@
+//===-- CodeGenFunction.h - Per-Function state for LLVM CodeGen -*- 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This is the internal per-function state used for llvm translation.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_LIB_CODEGEN_CODEGENFUNCTION_H
+#define LLVM_CLANG_LIB_CODEGEN_CODEGENFUNCTION_H
+
+#include "CGBuilder.h"
+#include "CGDebugInfo.h"
+#include "CGLoopInfo.h"
+#include "CGValue.h"
+#include "CodeGenModule.h"
+#include "CodeGenPGO.h"
+#include "EHScopeStack.h"
+#include "VarBypassDetector.h"
+#include "clang/AST/CharUnits.h"
+#include "clang/AST/CurrentSourceLocExprScope.h"
+#include "clang/AST/ExprCXX.h"
+#include "clang/AST/ExprObjC.h"
+#include "clang/AST/ExprOpenMP.h"
+#include "clang/AST/Type.h"
+#include "clang/Basic/ABI.h"
+#include "clang/Basic/CapturedStmt.h"
+#include "clang/Basic/CodeGenOptions.h"
+#include "clang/Basic/OpenMPKinds.h"
+#include "clang/Basic/TargetInfo.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/MapVector.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/IR/ValueHandle.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Transforms/Utils/SanitizerStats.h"
+
+namespace llvm {
+class BasicBlock;
+class LLVMContext;
+class MDNode;
+class Module;
+class SwitchInst;
+class Twine;
+class Value;
+}
+
+namespace clang {
+class ASTContext;
+class BlockDecl;
+class CXXDestructorDecl;
+class CXXForRangeStmt;
+class CXXTryStmt;
+class Decl;
+class LabelDecl;
+class EnumConstantDecl;
+class FunctionDecl;
+class FunctionProtoType;
+class LabelStmt;
+class ObjCContainerDecl;
+class ObjCInterfaceDecl;
+class ObjCIvarDecl;
+class ObjCMethodDecl;
+class ObjCImplementationDecl;
+class ObjCPropertyImplDecl;
+class TargetInfo;
+class VarDecl;
+class ObjCForCollectionStmt;
+class ObjCAtTryStmt;
+class ObjCAtThrowStmt;
+class ObjCAtSynchronizedStmt;
+class ObjCAutoreleasePoolStmt;
+class ReturnsNonNullAttr;
+
+namespace analyze_os_log {
+class OSLogBufferLayout;
+}
+
+namespace CodeGen {
+class CodeGenTypes;
+class CGCallee;
+class CGFunctionInfo;
+class CGRecordLayout;
+class CGBlockInfo;
+class CGCXXABI;
+class BlockByrefHelpers;
+class BlockByrefInfo;
+class BlockFlags;
+class BlockFieldFlags;
+class RegionCodeGenTy;
+class TargetCodeGenInfo;
+struct OMPTaskDataTy;
+struct CGCoroData;
+
+/// The kind of evaluation to perform on values of a particular
+/// type.  Basically, is the code in CGExprScalar, CGExprComplex, or
+/// CGExprAgg?
+///
+/// TODO: should vectors maybe be split out into their own thing?
+enum TypeEvaluationKind {
+  TEK_Scalar,
+  TEK_Complex,
+  TEK_Aggregate
+};
+
+#define LIST_SANITIZER_CHECKS                                                  \
+  SANITIZER_CHECK(AddOverflow, add_overflow, 0)                                \
+  SANITIZER_CHECK(BuiltinUnreachable, builtin_unreachable, 0)                  \
+  SANITIZER_CHECK(CFICheckFail, cfi_check_fail, 0)                             \
+  SANITIZER_CHECK(DivremOverflow, divrem_overflow, 0)                          \
+  SANITIZER_CHECK(DynamicTypeCacheMiss, dynamic_type_cache_miss, 0)            \
+  SANITIZER_CHECK(FloatCastOverflow, float_cast_overflow, 0)                   \
+  SANITIZER_CHECK(FunctionTypeMismatch, function_type_mismatch, 1)             \
+  SANITIZER_CHECK(ImplicitConversion, implicit_conversion, 0)                  \
+  SANITIZER_CHECK(InvalidBuiltin, invalid_builtin, 0)                          \
+  SANITIZER_CHECK(LoadInvalidValue, load_invalid_value, 0)                     \
+  SANITIZER_CHECK(MissingReturn, missing_return, 0)                            \
+  SANITIZER_CHECK(MulOverflow, mul_overflow, 0)                                \
+  SANITIZER_CHECK(NegateOverflow, negate_overflow, 0)                          \
+  SANITIZER_CHECK(NullabilityArg, nullability_arg, 0)                          \
+  SANITIZER_CHECK(NullabilityReturn, nullability_return, 1)                    \
+  SANITIZER_CHECK(NonnullArg, nonnull_arg, 0)                                  \
+  SANITIZER_CHECK(NonnullReturn, nonnull_return, 1)                            \
+  SANITIZER_CHECK(OutOfBounds, out_of_bounds, 0)                               \
+  SANITIZER_CHECK(PointerOverflow, pointer_overflow, 0)                        \
+  SANITIZER_CHECK(ShiftOutOfBounds, shift_out_of_bounds, 0)                    \
+  SANITIZER_CHECK(SubOverflow, sub_overflow, 0)                                \
+  SANITIZER_CHECK(TypeMismatch, type_mismatch, 1)                              \
+  SANITIZER_CHECK(AlignmentAssumption, alignment_assumption, 0)                \
+  SANITIZER_CHECK(VLABoundNotPositive, vla_bound_not_positive, 0)
+
+enum SanitizerHandler {
+#define SANITIZER_CHECK(Enum, Name, Version) Enum,
+  LIST_SANITIZER_CHECKS
+#undef SANITIZER_CHECK
+};
+
+/// Helper class with most of the code for saving a value for a
+/// conditional expression cleanup.
+struct DominatingLLVMValue {
+  typedef llvm::PointerIntPair<llvm::Value*, 1, bool> saved_type;
+
+  /// Answer whether the given value needs extra work to be saved.
+  static bool needsSaving(llvm::Value *value) {
+    // If it's not an instruction, we don't need to save.
+    if (!isa<llvm::Instruction>(value)) return false;
+
+    // If it's an instruction in the entry block, we don't need to save.
+    llvm::BasicBlock *block = cast<llvm::Instruction>(value)->getParent();
+    return (block != &block->getParent()->getEntryBlock());
+  }
+
+  static saved_type save(CodeGenFunction &CGF, llvm::Value *value);
+  static llvm::Value *restore(CodeGenFunction &CGF, saved_type value);
+};
+
+/// A partial specialization of DominatingValue for llvm::Values that
+/// might be llvm::Instructions.
+template <class T> struct DominatingPointer<T,true> : DominatingLLVMValue {
+  typedef T *type;
+  static type restore(CodeGenFunction &CGF, saved_type value) {
+    return static_cast<T*>(DominatingLLVMValue::restore(CGF, value));
+  }
+};
+
+/// A specialization of DominatingValue for Address.
+template <> struct DominatingValue<Address> {
+  typedef Address type;
+
+  struct saved_type {
+    DominatingLLVMValue::saved_type SavedValue;
+    CharUnits Alignment;
+  };
+
+  static bool needsSaving(type value) {
+    return DominatingLLVMValue::needsSaving(value.getPointer());
+  }
+  static saved_type save(CodeGenFunction &CGF, type value) {
+    return { DominatingLLVMValue::save(CGF, value.getPointer()),
+             value.getAlignment() };
+  }
+  static type restore(CodeGenFunction &CGF, saved_type value) {
+    return Address(DominatingLLVMValue::restore(CGF, value.SavedValue),
+                   value.Alignment);
+  }
+};
+
+/// A specialization of DominatingValue for RValue.
+template <> struct DominatingValue<RValue> {
+  typedef RValue type;
+  class saved_type {
+    enum Kind { ScalarLiteral, ScalarAddress, AggregateLiteral,
+                AggregateAddress, ComplexAddress };
+
+    llvm::Value *Value;
+    unsigned K : 3;
+    unsigned Align : 29;
+    saved_type(llvm::Value *v, Kind k, unsigned a = 0)
+      : Value(v), K(k), Align(a) {}
+
+  public:
+    static bool needsSaving(RValue value);
+    static saved_type save(CodeGenFunction &CGF, RValue value);
+    RValue restore(CodeGenFunction &CGF);
+
+    // implementations in CGCleanup.cpp
+  };
+
+  static bool needsSaving(type value) {
+    return saved_type::needsSaving(value);
+  }
+  static saved_type save(CodeGenFunction &CGF, type value) {
+    return saved_type::save(CGF, value);
+  }
+  static type restore(CodeGenFunction &CGF, saved_type value) {
+    return value.restore(CGF);
+  }
+};
+
+/// CodeGenFunction - This class organizes the per-function state that is used
+/// while generating LLVM code.
+class CodeGenFunction : public CodeGenTypeCache {
+  CodeGenFunction(const CodeGenFunction &) = delete;
+  void operator=(const CodeGenFunction &) = delete;
+
+  friend class CGCXXABI;
+public:
+  /// A jump destination is an abstract label, branching to which may
+  /// require a jump out through normal cleanups.
+  struct JumpDest {
+    JumpDest() : Block(nullptr), ScopeDepth(), Index(0) {}
+    JumpDest(llvm::BasicBlock *Block,
+             EHScopeStack::stable_iterator Depth,
+             unsigned Index)
+      : Block(Block), ScopeDepth(Depth), Index(Index) {}
+
+    bool isValid() const { return Block != nullptr; }
+    llvm::BasicBlock *getBlock() const { return Block; }
+    EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; }
+    unsigned getDestIndex() const { return Index; }
+
+    // This should be used cautiously.
+    void setScopeDepth(EHScopeStack::stable_iterator depth) {
+      ScopeDepth = depth;
+    }
+
+  private:
+    llvm::BasicBlock *Block;
+    EHScopeStack::stable_iterator ScopeDepth;
+    unsigned Index;
+  };
+
+  CodeGenModule &CGM;  // Per-module state.
+  const TargetInfo &Target;
+
+  typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy;
+  LoopInfoStack LoopStack;
+  CGBuilderTy Builder;
+
+  // Stores variables for which we can't generate correct lifetime markers
+  // because of jumps.
+  VarBypassDetector Bypasses;
+
+  // CodeGen lambda for loops and support for ordered clause
+  typedef llvm::function_ref<void(CodeGenFunction &, const OMPLoopDirective &,
+                                  JumpDest)>
+      CodeGenLoopTy;
+  typedef llvm::function_ref<void(CodeGenFunction &, SourceLocation,
+                                  const unsigned, const bool)>
+      CodeGenOrderedTy;
+
+  // Codegen lambda for loop bounds in worksharing loop constructs
+  typedef llvm::function_ref<std::pair<LValue, LValue>(
+      CodeGenFunction &, const OMPExecutableDirective &S)>
+      CodeGenLoopBoundsTy;
+
+  // Codegen lambda for loop bounds in dispatch-based loop implementation
+  typedef llvm::function_ref<std::pair<llvm::Value *, llvm::Value *>(
+      CodeGenFunction &, const OMPExecutableDirective &S, Address LB,
+      Address UB)>
+      CodeGenDispatchBoundsTy;
+
+  /// CGBuilder insert helper. This function is called after an
+  /// instruction is created using Builder.
+  void InsertHelper(llvm::Instruction *I, const llvm::Twine &Name,
+                    llvm::BasicBlock *BB,
+                    llvm::BasicBlock::iterator InsertPt) const;
+
+  /// CurFuncDecl - Holds the Decl for the current outermost
+  /// non-closure context.
+  const Decl *CurFuncDecl;
+  /// CurCodeDecl - This is the inner-most code context, which includes blocks.
+  const Decl *CurCodeDecl;
+  const CGFunctionInfo *CurFnInfo;
+  QualType FnRetTy;
+  llvm::Function *CurFn = nullptr;
+
+  // Holds coroutine data if the current function is a coroutine. We use a
+  // wrapper to manage its lifetime, so that we don't have to define CGCoroData
+  // in this header.
+  struct CGCoroInfo {
+    std::unique_ptr<CGCoroData> Data;
+    CGCoroInfo();
+    ~CGCoroInfo();
+  };
+  CGCoroInfo CurCoro;
+
+  bool isCoroutine() const {
+    return CurCoro.Data != nullptr;
+  }
+
+  /// CurGD - The GlobalDecl for the current function being compiled.
+  GlobalDecl CurGD;
+
+  /// PrologueCleanupDepth - The cleanup depth enclosing all the
+  /// cleanups associated with the parameters.
+  EHScopeStack::stable_iterator PrologueCleanupDepth;
+
+  /// ReturnBlock - Unified return block.
+  JumpDest ReturnBlock;
+
+  /// ReturnValue - The temporary alloca to hold the return
+  /// value. This is invalid iff the function has no return value.
+  Address ReturnValue = Address::invalid();
+
+  /// ReturnValuePointer - The temporary alloca to hold a pointer to sret.
+  /// This is invalid if sret is not in use.
+  Address ReturnValuePointer = Address::invalid();
+
+  /// Return true if a label was seen in the current scope.
+  bool hasLabelBeenSeenInCurrentScope() const {
+    if (CurLexicalScope)
+      return CurLexicalScope->hasLabels();
+    return !LabelMap.empty();
+  }
+
+  /// AllocaInsertPoint - This is an instruction in the entry block before which
+  /// we prefer to insert allocas.
+  llvm::AssertingVH<llvm::Instruction> AllocaInsertPt;
+
+  /// API for captured statement code generation.
+  class CGCapturedStmtInfo {
+  public:
+    explicit CGCapturedStmtInfo(CapturedRegionKind K = CR_Default)
+        : Kind(K), ThisValue(nullptr), CXXThisFieldDecl(nullptr) {}
+    explicit CGCapturedStmtInfo(const CapturedStmt &S,
+                                CapturedRegionKind K = CR_Default)
+      : Kind(K), ThisValue(nullptr), CXXThisFieldDecl(nullptr) {
+
+      RecordDecl::field_iterator Field =
+        S.getCapturedRecordDecl()->field_begin();
+      for (CapturedStmt::const_capture_iterator I = S.capture_begin(),
+                                                E = S.capture_end();
+           I != E; ++I, ++Field) {
+        if (I->capturesThis())
+          CXXThisFieldDecl = *Field;
+        else if (I->capturesVariable())
+          CaptureFields[I->getCapturedVar()->getCanonicalDecl()] = *Field;
+        else if (I->capturesVariableByCopy())
+          CaptureFields[I->getCapturedVar()->getCanonicalDecl()] = *Field;
+      }
+    }
+
+    virtual ~CGCapturedStmtInfo();
+
+    CapturedRegionKind getKind() const { return Kind; }
+
+    virtual void setContextValue(llvm::Value *V) { ThisValue = V; }
+    // Retrieve the value of the context parameter.
+    virtual llvm::Value *getContextValue() const { return ThisValue; }
+
+    /// Lookup the captured field decl for a variable.
+    virtual const FieldDecl *lookup(const VarDecl *VD) const {
+      return CaptureFields.lookup(VD->getCanonicalDecl());
+    }
+
+    bool isCXXThisExprCaptured() const { return getThisFieldDecl() != nullptr; }
+    virtual FieldDecl *getThisFieldDecl() const { return CXXThisFieldDecl; }
+
+    static bool classof(const CGCapturedStmtInfo *) {
+      return true;
+    }
+
+    /// Emit the captured statement body.
+    virtual void EmitBody(CodeGenFunction &CGF, const Stmt *S) {
+      CGF.incrementProfileCounter(S);
+      CGF.EmitStmt(S);
+    }
+
+    /// Get the name of the capture helper.
+    virtual StringRef getHelperName() const { return "__captured_stmt"; }
+
+  private:
+    /// The kind of captured statement being generated.
+    CapturedRegionKind Kind;
+
+    /// Keep the map between VarDecl and FieldDecl.
+    llvm::SmallDenseMap<const VarDecl *, FieldDecl *> CaptureFields;
+
+    /// The base address of the captured record, passed in as the first
+    /// argument of the parallel region function.
+    llvm::Value *ThisValue;
+
+    /// Captured 'this' type.
+    FieldDecl *CXXThisFieldDecl;
+  };
+  CGCapturedStmtInfo *CapturedStmtInfo = nullptr;
+
+  /// RAII for correct setting/restoring of CapturedStmtInfo.
+  class CGCapturedStmtRAII {
+  private:
+    CodeGenFunction &CGF;
+    CGCapturedStmtInfo *PrevCapturedStmtInfo;
+  public:
+    CGCapturedStmtRAII(CodeGenFunction &CGF,
+                       CGCapturedStmtInfo *NewCapturedStmtInfo)
+        : CGF(CGF), PrevCapturedStmtInfo(CGF.CapturedStmtInfo) {
+      CGF.CapturedStmtInfo = NewCapturedStmtInfo;
+    }
+    ~CGCapturedStmtRAII() { CGF.CapturedStmtInfo = PrevCapturedStmtInfo; }
+  };
+
+  /// An abstract representation of regular/ObjC call/message targets.
+  class AbstractCallee {
+    /// The function declaration of the callee.
+    const Decl *CalleeDecl;
+
+  public:
+    AbstractCallee() : CalleeDecl(nullptr) {}
+    AbstractCallee(const FunctionDecl *FD) : CalleeDecl(FD) {}
+    AbstractCallee(const ObjCMethodDecl *OMD) : CalleeDecl(OMD) {}
+    bool hasFunctionDecl() const {
+      return dyn_cast_or_null<FunctionDecl>(CalleeDecl);
+    }
+    const Decl *getDecl() const { return CalleeDecl; }
+    unsigned getNumParams() const {
+      if (const auto *FD = dyn_cast<FunctionDecl>(CalleeDecl))
+        return FD->getNumParams();
+      return cast<ObjCMethodDecl>(CalleeDecl)->param_size();
+    }
+    const ParmVarDecl *getParamDecl(unsigned I) const {
+      if (const auto *FD = dyn_cast<FunctionDecl>(CalleeDecl))
+        return FD->getParamDecl(I);
+      return *(cast<ObjCMethodDecl>(CalleeDecl)->param_begin() + I);
+    }
+  };
+
+  /// Sanitizers enabled for this function.
+  SanitizerSet SanOpts;
+
+  /// True if CodeGen currently emits code implementing sanitizer checks.
+  bool IsSanitizerScope = false;
+
+  /// RAII object to set/unset CodeGenFunction::IsSanitizerScope.
+  class SanitizerScope {
+    CodeGenFunction *CGF;
+  public:
+    SanitizerScope(CodeGenFunction *CGF);
+    ~SanitizerScope();
+  };
+
+  /// In C++, whether we are code generating a thunk.  This controls whether we
+  /// should emit cleanups.
+  bool CurFuncIsThunk = false;
+
+  /// In ARC, whether we should autorelease the return value.
+  bool AutoreleaseResult = false;
+
+  /// Whether we processed a Microsoft-style asm block during CodeGen. These can
+  /// potentially set the return value.
+  bool SawAsmBlock = false;
+
+  const NamedDecl *CurSEHParent = nullptr;
+
+  /// True if the current function is an outlined SEH helper. This can be a
+  /// finally block or filter expression.
+  bool IsOutlinedSEHHelper = false;
+
+  /// True if CodeGen currently emits code inside presereved access index
+  /// region.
+  bool IsInPreservedAIRegion = false;
+
+  const CodeGen::CGBlockInfo *BlockInfo = nullptr;
+  llvm::Value *BlockPointer = nullptr;
+
+  llvm::DenseMap<const VarDecl *, FieldDecl *> LambdaCaptureFields;
+  FieldDecl *LambdaThisCaptureField = nullptr;
+
+  /// A mapping from NRVO variables to the flags used to indicate
+  /// when the NRVO has been applied to this variable.
+  llvm::DenseMap<const VarDecl *, llvm::Value *> NRVOFlags;
+
+  EHScopeStack EHStack;
+  llvm::SmallVector<char, 256> LifetimeExtendedCleanupStack;
+  llvm::SmallVector<const JumpDest *, 2> SEHTryEpilogueStack;
+
+  llvm::Instruction *CurrentFuncletPad = nullptr;
+
+  class CallLifetimeEnd final : public EHScopeStack::Cleanup {
+    llvm::Value *Addr;
+    llvm::Value *Size;
+
+  public:
+    CallLifetimeEnd(Address addr, llvm::Value *size)
+        : Addr(addr.getPointer()), Size(size) {}
+
+    void Emit(CodeGenFunction &CGF, Flags flags) override {
+      CGF.EmitLifetimeEnd(Size, Addr);
+    }
+  };
+
+  /// Header for data within LifetimeExtendedCleanupStack.
+  struct LifetimeExtendedCleanupHeader {
+    /// The size of the following cleanup object.
+    unsigned Size;
+    /// The kind of cleanup to push: a value from the CleanupKind enumeration.
+    unsigned Kind : 31;
+    /// Whether this is a conditional cleanup.
+    unsigned IsConditional : 1;
+
+    size_t getSize() const { return Size; }
+    CleanupKind getKind() const { return (CleanupKind)Kind; }
+    bool isConditional() const { return IsConditional; }
+  };
+
+  /// i32s containing the indexes of the cleanup destinations.
+  Address NormalCleanupDest = Address::invalid();
+
+  unsigned NextCleanupDestIndex = 1;
+
+  /// FirstBlockInfo - The head of a singly-linked-list of block layouts.
+  CGBlockInfo *FirstBlockInfo = nullptr;
+
+  /// EHResumeBlock - Unified block containing a call to llvm.eh.resume.
+  llvm::BasicBlock *EHResumeBlock = nullptr;
+
+  /// The exception slot.  All landing pads write the current exception pointer
+  /// into this alloca.
+  llvm::Value *ExceptionSlot = nullptr;
+
+  /// The selector slot.  Under the MandatoryCleanup model, all landing pads
+  /// write the current selector value into this alloca.
+  llvm::AllocaInst *EHSelectorSlot = nullptr;
+
+  /// A stack of exception code slots. Entering an __except block pushes a slot
+  /// on the stack and leaving pops one. The __exception_code() intrinsic loads
+  /// a value from the top of the stack.
+  SmallVector<Address, 1> SEHCodeSlotStack;
+
+  /// Value returned by __exception_info intrinsic.
+  llvm::Value *SEHInfo = nullptr;
+
+  /// Emits a landing pad for the current EH stack.
+  llvm::BasicBlock *EmitLandingPad();
+
+  llvm::BasicBlock *getInvokeDestImpl();
+
+  template <class T>
+  typename DominatingValue<T>::saved_type saveValueInCond(T value) {
+    return DominatingValue<T>::save(*this, value);
+  }
+
+public:
+  /// ObjCEHValueStack - Stack of Objective-C exception values, used for
+  /// rethrows.
+  SmallVector<llvm::Value*, 8> ObjCEHValueStack;
+
+  /// A class controlling the emission of a finally block.
+  class FinallyInfo {
+    /// Where the catchall's edge through the cleanup should go.
+    JumpDest RethrowDest;
+
+    /// A function to call to enter the catch.
+    llvm::FunctionCallee BeginCatchFn;
+
+    /// An i1 variable indicating whether or not the @finally is
+    /// running for an exception.
+    llvm::AllocaInst *ForEHVar;
+
+    /// An i8* variable into which the exception pointer to rethrow
+    /// has been saved.
+    llvm::AllocaInst *SavedExnVar;
+
+  public:
+    void enter(CodeGenFunction &CGF, const Stmt *Finally,
+               llvm::FunctionCallee beginCatchFn,
+               llvm::FunctionCallee endCatchFn, llvm::FunctionCallee rethrowFn);
+    void exit(CodeGenFunction &CGF);
+  };
+
+  /// Returns true inside SEH __try blocks.
+  bool isSEHTryScope() const { return !SEHTryEpilogueStack.empty(); }
+
+  /// Returns true while emitting a cleanuppad.
+  bool isCleanupPadScope() const {
+    return CurrentFuncletPad && isa<llvm::CleanupPadInst>(CurrentFuncletPad);
+  }
+
+  /// pushFullExprCleanup - Push a cleanup to be run at the end of the
+  /// current full-expression.  Safe against the possibility that
+  /// we're currently inside a conditionally-evaluated expression.
+  template <class T, class... As>
+  void pushFullExprCleanup(CleanupKind kind, As... A) {
+    // If we're not in a conditional branch, or if none of the
+    // arguments requires saving, then use the unconditional cleanup.
+    if (!isInConditionalBranch())
+      return EHStack.pushCleanup<T>(kind, A...);
+
+    // Stash values in a tuple so we can guarantee the order of saves.
+    typedef std::tuple<typename DominatingValue<As>::saved_type...> SavedTuple;
+    SavedTuple Saved{saveValueInCond(A)...};
+
+    typedef EHScopeStack::ConditionalCleanup<T, As...> CleanupType;
+    EHStack.pushCleanupTuple<CleanupType>(kind, Saved);
+    initFullExprCleanup();
+  }
+
+  /// Queue a cleanup to be pushed after finishing the current
+  /// full-expression.
+  template <class T, class... As>
+  void pushCleanupAfterFullExpr(CleanupKind Kind, As... A) {
+    if (!isInConditionalBranch())
+      return pushCleanupAfterFullExprImpl<T>(Kind, Address::invalid(), A...);
+
+    Address ActiveFlag = createCleanupActiveFlag();
+    assert(!DominatingValue<Address>::needsSaving(ActiveFlag) &&
+           "cleanup active flag should never need saving");
+
+    typedef std::tuple<typename DominatingValue<As>::saved_type...> SavedTuple;
+    SavedTuple Saved{saveValueInCond(A)...};
+
+    typedef EHScopeStack::ConditionalCleanup<T, As...> CleanupType;
+    pushCleanupAfterFullExprImpl<CleanupType>(Kind, ActiveFlag, Saved);
+  }
+
+  template <class T, class... As>
+  void pushCleanupAfterFullExprImpl(CleanupKind Kind, Address ActiveFlag,
+                                    As... A) {
+    LifetimeExtendedCleanupHeader Header = {sizeof(T), Kind,
+                                            ActiveFlag.isValid()};
+
+    size_t OldSize = LifetimeExtendedCleanupStack.size();
+    LifetimeExtendedCleanupStack.resize(
+        LifetimeExtendedCleanupStack.size() + sizeof(Header) + Header.Size +
+        (Header.IsConditional ? sizeof(ActiveFlag) : 0));
+
+    static_assert(sizeof(Header) % alignof(T) == 0,
+                  "Cleanup will be allocated on misaligned address");
+    char *Buffer = &LifetimeExtendedCleanupStack[OldSize];
+    new (Buffer) LifetimeExtendedCleanupHeader(Header);
+    new (Buffer + sizeof(Header)) T(A...);
+    if (Header.IsConditional)
+      new (Buffer + sizeof(Header) + sizeof(T)) Address(ActiveFlag);
+  }
+
+  /// Set up the last cleanup that was pushed as a conditional
+  /// full-expression cleanup.
+  void initFullExprCleanup() {
+    initFullExprCleanupWithFlag(createCleanupActiveFlag());
+  }
+
+  void initFullExprCleanupWithFlag(Address ActiveFlag);
+  Address createCleanupActiveFlag();
+
+  /// PushDestructorCleanup - Push a cleanup to call the
+  /// complete-object destructor of an object of the given type at the
+  /// given address.  Does nothing if T is not a C++ class type with a
+  /// non-trivial destructor.
+  void PushDestructorCleanup(QualType T, Address Addr);
+
+  /// PushDestructorCleanup - Push a cleanup to call the
+  /// complete-object variant of the given destructor on the object at
+  /// the given address.
+  void PushDestructorCleanup(const CXXDestructorDecl *Dtor, QualType T,
+                             Address Addr);
+
+  /// PopCleanupBlock - Will pop the cleanup entry on the stack and
+  /// process all branch fixups.
+  void PopCleanupBlock(bool FallThroughIsBranchThrough = false);
+
+  /// DeactivateCleanupBlock - Deactivates the given cleanup block.
+  /// The block cannot be reactivated.  Pops it if it's the top of the
+  /// stack.
+  ///
+  /// \param DominatingIP - An instruction which is known to
+  ///   dominate the current IP (if set) and which lies along
+  ///   all paths of execution between the current IP and the
+  ///   the point at which the cleanup comes into scope.
+  void DeactivateCleanupBlock(EHScopeStack::stable_iterator Cleanup,
+                              llvm::Instruction *DominatingIP);
+
+  /// ActivateCleanupBlock - Activates an initially-inactive cleanup.
+  /// Cannot be used to resurrect a deactivated cleanup.
+  ///
+  /// \param DominatingIP - An instruction which is known to
+  ///   dominate the current IP (if set) and which lies along
+  ///   all paths of execution between the current IP and the
+  ///   the point at which the cleanup comes into scope.
+  void ActivateCleanupBlock(EHScopeStack::stable_iterator Cleanup,
+                            llvm::Instruction *DominatingIP);
+
+  /// Enters a new scope for capturing cleanups, all of which
+  /// will be executed once the scope is exited.
+  class RunCleanupsScope {
+    EHScopeStack::stable_iterator CleanupStackDepth, OldCleanupScopeDepth;
+    size_t LifetimeExtendedCleanupStackSize;
+    bool OldDidCallStackSave;
+  protected:
+    bool PerformCleanup;
+  private:
+
+    RunCleanupsScope(const RunCleanupsScope &) = delete;
+    void operator=(const RunCleanupsScope &) = delete;
+
+  protected:
+    CodeGenFunction& CGF;
+
+  public:
+    /// Enter a new cleanup scope.
+    explicit RunCleanupsScope(CodeGenFunction &CGF)
+      : PerformCleanup(true), CGF(CGF)
+    {
+      CleanupStackDepth = CGF.EHStack.stable_begin();
+      LifetimeExtendedCleanupStackSize =
+          CGF.LifetimeExtendedCleanupStack.size();
+      OldDidCallStackSave = CGF.DidCallStackSave;
+      CGF.DidCallStackSave = false;
+      OldCleanupScopeDepth = CGF.CurrentCleanupScopeDepth;
+      CGF.CurrentCleanupScopeDepth = CleanupStackDepth;
+    }
+
+    /// Exit this cleanup scope, emitting any accumulated cleanups.
+    ~RunCleanupsScope() {
+      if (PerformCleanup)
+        ForceCleanup();
+    }
+
+    /// Determine whether this scope requires any cleanups.
+    bool requiresCleanups() const {
+      return CGF.EHStack.stable_begin() != CleanupStackDepth;
+    }
+
+    /// Force the emission of cleanups now, instead of waiting
+    /// until this object is destroyed.
+    /// \param ValuesToReload - A list of values that need to be available at
+    /// the insertion point after cleanup emission. If cleanup emission created
+    /// a shared cleanup block, these value pointers will be rewritten.
+    /// Otherwise, they not will be modified.
+    void ForceCleanup(std::initializer_list<llvm::Value**> ValuesToReload = {}) {
+      assert(PerformCleanup && "Already forced cleanup");
+      CGF.DidCallStackSave = OldDidCallStackSave;
+      CGF.PopCleanupBlocks(CleanupStackDepth, LifetimeExtendedCleanupStackSize,
+                           ValuesToReload);
+      PerformCleanup = false;
+      CGF.CurrentCleanupScopeDepth = OldCleanupScopeDepth;
+    }
+  };
+
+  // Cleanup stack depth of the RunCleanupsScope that was pushed most recently.
+  EHScopeStack::stable_iterator CurrentCleanupScopeDepth =
+      EHScopeStack::stable_end();
+
+  class LexicalScope : public RunCleanupsScope {
+    SourceRange Range;
+    SmallVector<const LabelDecl*, 4> Labels;
+    LexicalScope *ParentScope;
+
+    LexicalScope(const LexicalScope &) = delete;
+    void operator=(const LexicalScope &) = delete;
+
+  public:
+    /// Enter a new cleanup scope.
+    explicit LexicalScope(CodeGenFunction &CGF, SourceRange Range)
+      : RunCleanupsScope(CGF), Range(Range), ParentScope(CGF.CurLexicalScope) {
+      CGF.CurLexicalScope = this;
+      if (CGDebugInfo *DI = CGF.getDebugInfo())
+        DI->EmitLexicalBlockStart(CGF.Builder, Range.getBegin());
+    }
+
+    void addLabel(const LabelDecl *label) {
+      assert(PerformCleanup && "adding label to dead scope?");
+      Labels.push_back(label);
+    }
+
+    /// Exit this cleanup scope, emitting any accumulated
+    /// cleanups.
+    ~LexicalScope() {
+      if (CGDebugInfo *DI = CGF.getDebugInfo())
+        DI->EmitLexicalBlockEnd(CGF.Builder, Range.getEnd());
+
+      // If we should perform a cleanup, force them now.  Note that
+      // this ends the cleanup scope before rescoping any labels.
+      if (PerformCleanup) {
+        ApplyDebugLocation DL(CGF, Range.getEnd());
+        ForceCleanup();
+      }
+    }
+
+    /// Force the emission of cleanups now, instead of waiting
+    /// until this object is destroyed.
+    void ForceCleanup() {
+      CGF.CurLexicalScope = ParentScope;
+      RunCleanupsScope::ForceCleanup();
+
+      if (!Labels.empty())
+        rescopeLabels();
+    }
+
+    bool hasLabels() const {
+      return !Labels.empty();
+    }
+
+    void rescopeLabels();
+  };
+
+  typedef llvm::DenseMap<const Decl *, Address> DeclMapTy;
+
+  /// The class used to assign some variables some temporarily addresses.
+  class OMPMapVars {
+    DeclMapTy SavedLocals;
+    DeclMapTy SavedTempAddresses;
+    OMPMapVars(const OMPMapVars &) = delete;
+    void operator=(const OMPMapVars &) = delete;
+
+  public:
+    explicit OMPMapVars() = default;
+    ~OMPMapVars() {
+      assert(SavedLocals.empty() && "Did not restored original addresses.");
+    };
+
+    /// Sets the address of the variable \p LocalVD to be \p TempAddr in
+    /// function \p CGF.
+    /// \return true if at least one variable was set already, false otherwise.
+    bool setVarAddr(CodeGenFunction &CGF, const VarDecl *LocalVD,
+                    Address TempAddr) {
+      LocalVD = LocalVD->getCanonicalDecl();
+      // Only save it once.
+      if (SavedLocals.count(LocalVD)) return false;
+
+      // Copy the existing local entry to SavedLocals.
+      auto it = CGF.LocalDeclMap.find(LocalVD);
+      if (it != CGF.LocalDeclMap.end())
+        SavedLocals.try_emplace(LocalVD, it->second);
+      else
+        SavedLocals.try_emplace(LocalVD, Address::invalid());
+
+      // Generate the private entry.
+      QualType VarTy = LocalVD->getType();
+      if (VarTy->isReferenceType()) {
+        Address Temp = CGF.CreateMemTemp(VarTy);
+        CGF.Builder.CreateStore(TempAddr.getPointer(), Temp);
+        TempAddr = Temp;
+      }
+      SavedTempAddresses.try_emplace(LocalVD, TempAddr);
+
+      return true;
+    }
+
+    /// Applies new addresses to the list of the variables.
+    /// \return true if at least one variable is using new address, false
+    /// otherwise.
+    bool apply(CodeGenFunction &CGF) {
+      copyInto(SavedTempAddresses, CGF.LocalDeclMap);
+      SavedTempAddresses.clear();
+      return !SavedLocals.empty();
+    }
+
+    /// Restores original addresses of the variables.
+    void restore(CodeGenFunction &CGF) {
+      if (!SavedLocals.empty()) {
+        copyInto(SavedLocals, CGF.LocalDeclMap);
+        SavedLocals.clear();
+      }
+    }
+
+  private:
+    /// Copy all the entries in the source map over the corresponding
+    /// entries in the destination, which must exist.
+    static void copyInto(const DeclMapTy &Src, DeclMapTy &Dest) {
+      for (auto &Pair : Src) {
+        if (!Pair.second.isValid()) {
+          Dest.erase(Pair.first);
+          continue;
+        }
+
+        auto I = Dest.find(Pair.first);
+        if (I != Dest.end())
+          I->second = Pair.second;
+        else
+          Dest.insert(Pair);
+      }
+    }
+  };
+
+  /// The scope used to remap some variables as private in the OpenMP loop body
+  /// (or other captured region emitted without outlining), and to restore old
+  /// vars back on exit.
+  class OMPPrivateScope : public RunCleanupsScope {
+    OMPMapVars MappedVars;
+    OMPPrivateScope(const OMPPrivateScope &) = delete;
+    void operator=(const OMPPrivateScope &) = delete;
+
+  public:
+    /// Enter a new OpenMP private scope.
+    explicit OMPPrivateScope(CodeGenFunction &CGF) : RunCleanupsScope(CGF) {}
+
+    /// Registers \p LocalVD variable as a private and apply \p PrivateGen
+    /// function for it to generate corresponding private variable. \p
+    /// PrivateGen returns an address of the generated private variable.
+    /// \return true if the variable is registered as private, false if it has
+    /// been privatized already.
+    bool addPrivate(const VarDecl *LocalVD,
+                    const llvm::function_ref<Address()> PrivateGen) {
+      assert(PerformCleanup && "adding private to dead scope");
+      return MappedVars.setVarAddr(CGF, LocalVD, PrivateGen());
+    }
+
+    /// Privatizes local variables previously registered as private.
+    /// Registration is separate from the actual privatization to allow
+    /// initializers use values of the original variables, not the private one.
+    /// This is important, for example, if the private variable is a class
+    /// variable initialized by a constructor that references other private
+    /// variables. But at initialization original variables must be used, not
+    /// private copies.
+    /// \return true if at least one variable was privatized, false otherwise.
+    bool Privatize() { return MappedVars.apply(CGF); }
+
+    void ForceCleanup() {
+      RunCleanupsScope::ForceCleanup();
+      MappedVars.restore(CGF);
+    }
+
+    /// Exit scope - all the mapped variables are restored.
+    ~OMPPrivateScope() {
+      if (PerformCleanup)
+        ForceCleanup();
+    }
+
+    /// Checks if the global variable is captured in current function.
+    bool isGlobalVarCaptured(const VarDecl *VD) const {
+      VD = VD->getCanonicalDecl();
+      return !VD->isLocalVarDeclOrParm() && CGF.LocalDeclMap.count(VD) > 0;
+    }
+  };
+
+  /// Save/restore original map of previously emitted local vars in case when we
+  /// need to duplicate emission of the same code several times in the same
+  /// function for OpenMP code.
+  class OMPLocalDeclMapRAII {
+    CodeGenFunction &CGF;
+    DeclMapTy SavedMap;
+
+  public:
+    OMPLocalDeclMapRAII(CodeGenFunction &CGF)
+        : CGF(CGF), SavedMap(CGF.LocalDeclMap) {}
+    ~OMPLocalDeclMapRAII() { SavedMap.swap(CGF.LocalDeclMap); }
+  };
+
+  /// Takes the old cleanup stack size and emits the cleanup blocks
+  /// that have been added.
+  void
+  PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize,
+                   std::initializer_list<llvm::Value **> ValuesToReload = {});
+
+  /// Takes the old cleanup stack size and emits the cleanup blocks
+  /// that have been added, then adds all lifetime-extended cleanups from
+  /// the given position to the stack.
+  void
+  PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize,
+                   size_t OldLifetimeExtendedStackSize,
+                   std::initializer_list<llvm::Value **> ValuesToReload = {});
+
+  void ResolveBranchFixups(llvm::BasicBlock *Target);
+
+  /// The given basic block lies in the current EH scope, but may be a
+  /// target of a potentially scope-crossing jump; get a stable handle
+  /// to which we can perform this jump later.
+  JumpDest getJumpDestInCurrentScope(llvm::BasicBlock *Target) {
+    return JumpDest(Target,
+                    EHStack.getInnermostNormalCleanup(),
+                    NextCleanupDestIndex++);
+  }
+
+  /// The given basic block lies in the current EH scope, but may be a
+  /// target of a potentially scope-crossing jump; get a stable handle
+  /// to which we can perform this jump later.
+  JumpDest getJumpDestInCurrentScope(StringRef Name = StringRef()) {
+    return getJumpDestInCurrentScope(createBasicBlock(Name));
+  }
+
+  /// EmitBranchThroughCleanup - Emit a branch from the current insert
+  /// block through the normal cleanup handling code (if any) and then
+  /// on to \arg Dest.
+  void EmitBranchThroughCleanup(JumpDest Dest);
+
+  /// isObviouslyBranchWithoutCleanups - Return true if a branch to the
+  /// specified destination obviously has no cleanups to run.  'false' is always
+  /// a conservatively correct answer for this method.
+  bool isObviouslyBranchWithoutCleanups(JumpDest Dest) const;
+
+  /// popCatchScope - Pops the catch scope at the top of the EHScope
+  /// stack, emitting any required code (other than the catch handlers
+  /// themselves).
+  void popCatchScope();
+
+  llvm::BasicBlock *getEHResumeBlock(bool isCleanup);
+  llvm::BasicBlock *getEHDispatchBlock(EHScopeStack::stable_iterator scope);
+  llvm::BasicBlock *
+  getFuncletEHDispatchBlock(EHScopeStack::stable_iterator scope);
+
+  /// An object to manage conditionally-evaluated expressions.
+  class ConditionalEvaluation {
+    llvm::BasicBlock *StartBB;
+
+  public:
+    ConditionalEvaluation(CodeGenFunction &CGF)
+      : StartBB(CGF.Builder.GetInsertBlock()) {}
+
+    void begin(CodeGenFunction &CGF) {
+      assert(CGF.OutermostConditional != this);
+      if (!CGF.OutermostConditional)
+        CGF.OutermostConditional = this;
+    }
+
+    void end(CodeGenFunction &CGF) {
+      assert(CGF.OutermostConditional != nullptr);
+      if (CGF.OutermostConditional == this)
+        CGF.OutermostConditional = nullptr;
+    }
+
+    /// Returns a block which will be executed prior to each
+    /// evaluation of the conditional code.
+    llvm::BasicBlock *getStartingBlock() const {
+      return StartBB;
+    }
+  };
+
+  /// isInConditionalBranch - Return true if we're currently emitting
+  /// one branch or the other of a conditional expression.
+  bool isInConditionalBranch() const { return OutermostConditional != nullptr; }
+
+  void setBeforeOutermostConditional(llvm::Value *value, Address addr) {
+    assert(isInConditionalBranch());
+    llvm::BasicBlock *block = OutermostConditional->getStartingBlock();
+    auto store = new llvm::StoreInst(value, addr.getPointer(), &block->back());
+    store->setAlignment(addr.getAlignment().getAsAlign());
+  }
+
+  /// An RAII object to record that we're evaluating a statement
+  /// expression.
+  class StmtExprEvaluation {
+    CodeGenFunction &CGF;
+
+    /// We have to save the outermost conditional: cleanups in a
+    /// statement expression aren't conditional just because the
+    /// StmtExpr is.
+    ConditionalEvaluation *SavedOutermostConditional;
+
+  public:
+    StmtExprEvaluation(CodeGenFunction &CGF)
+      : CGF(CGF), SavedOutermostConditional(CGF.OutermostConditional) {
+      CGF.OutermostConditional = nullptr;
+    }
+
+    ~StmtExprEvaluation() {
+      CGF.OutermostConditional = SavedOutermostConditional;
+      CGF.EnsureInsertPoint();
+    }
+  };
+
+  /// An object which temporarily prevents a value from being
+  /// destroyed by aggressive peephole optimizations that assume that
+  /// all uses of a value have been realized in the IR.
+  class PeepholeProtection {
+    llvm::Instruction *Inst;
+    friend class CodeGenFunction;
+
+  public:
+    PeepholeProtection() : Inst(nullptr) {}
+  };
+
+  /// A non-RAII class containing all the information about a bound
+  /// opaque value.  OpaqueValueMapping, below, is a RAII wrapper for
+  /// this which makes individual mappings very simple; using this
+  /// class directly is useful when you have a variable number of
+  /// opaque values or don't want the RAII functionality for some
+  /// reason.
+  class OpaqueValueMappingData {
+    const OpaqueValueExpr *OpaqueValue;
+    bool BoundLValue;
+    CodeGenFunction::PeepholeProtection Protection;
+
+    OpaqueValueMappingData(const OpaqueValueExpr *ov,
+                           bool boundLValue)
+      : OpaqueValue(ov), BoundLValue(boundLValue) {}
+  public:
+    OpaqueValueMappingData() : OpaqueValue(nullptr) {}
+
+    static bool shouldBindAsLValue(const Expr *expr) {
+      // gl-values should be bound as l-values for obvious reasons.
+      // Records should be bound as l-values because IR generation
+      // always keeps them in memory.  Expressions of function type
+      // act exactly like l-values but are formally required to be
+      // r-values in C.
+      return expr->isGLValue() ||
+             expr->getType()->isFunctionType() ||
+             hasAggregateEvaluationKind(expr->getType());
+    }
+
+    static OpaqueValueMappingData bind(CodeGenFunction &CGF,
+                                       const OpaqueValueExpr *ov,
+                                       const Expr *e) {
+      if (shouldBindAsLValue(ov))
+        return bind(CGF, ov, CGF.EmitLValue(e));
+      return bind(CGF, ov, CGF.EmitAnyExpr(e));
+    }
+
+    static OpaqueValueMappingData bind(CodeGenFunction &CGF,
+                                       const OpaqueValueExpr *ov,
+                                       const LValue &lv) {
+      assert(shouldBindAsLValue(ov));
+      CGF.OpaqueLValues.insert(std::make_pair(ov, lv));
+      return OpaqueValueMappingData(ov, true);
+    }
+
+    static OpaqueValueMappingData bind(CodeGenFunction &CGF,
+                                       const OpaqueValueExpr *ov,
+                                       const RValue &rv) {
+      assert(!shouldBindAsLValue(ov));
+      CGF.OpaqueRValues.insert(std::make_pair(ov, rv));
+
+      OpaqueValueMappingData data(ov, false);
+
+      // Work around an extremely aggressive peephole optimization in
+      // EmitScalarConversion which assumes that all other uses of a
+      // value are extant.
+      data.Protection = CGF.protectFromPeepholes(rv);
+
+      return data;
+    }
+
+    bool isValid() const { return OpaqueValue != nullptr; }
+    void clear() { OpaqueValue = nullptr; }
+
+    void unbind(CodeGenFunction &CGF) {
+      assert(OpaqueValue && "no data to unbind!");
+
+      if (BoundLValue) {
+        CGF.OpaqueLValues.erase(OpaqueValue);
+      } else {
+        CGF.OpaqueRValues.erase(OpaqueValue);
+        CGF.unprotectFromPeepholes(Protection);
+      }
+    }
+  };
+
+  /// An RAII object to set (and then clear) a mapping for an OpaqueValueExpr.
+  class OpaqueValueMapping {
+    CodeGenFunction &CGF;
+    OpaqueValueMappingData Data;
+
+  public:
+    static bool shouldBindAsLValue(const Expr *expr) {
+      return OpaqueValueMappingData::shouldBindAsLValue(expr);
+    }
+
+    /// Build the opaque value mapping for the given conditional
+    /// operator if it's the GNU ?: extension.  This is a common
+    /// enough pattern that the convenience operator is really
+    /// helpful.
+    ///
+    OpaqueValueMapping(CodeGenFunction &CGF,
+                       const AbstractConditionalOperator *op) : CGF(CGF) {
+      if (isa<ConditionalOperator>(op))
+        // Leave Data empty.
+        return;
+
+      const BinaryConditionalOperator *e = cast<BinaryConditionalOperator>(op);
+      Data = OpaqueValueMappingData::bind(CGF, e->getOpaqueValue(),
+                                          e->getCommon());
+    }
+
+    /// Build the opaque value mapping for an OpaqueValueExpr whose source
+    /// expression is set to the expression the OVE represents.
+    OpaqueValueMapping(CodeGenFunction &CGF, const OpaqueValueExpr *OV)
+        : CGF(CGF) {
+      if (OV) {
+        assert(OV->getSourceExpr() && "wrong form of OpaqueValueMapping used "
+                                      "for OVE with no source expression");
+        Data = OpaqueValueMappingData::bind(CGF, OV, OV->getSourceExpr());
+      }
+    }
+
+    OpaqueValueMapping(CodeGenFunction &CGF,
+                       const OpaqueValueExpr *opaqueValue,
+                       LValue lvalue)
+      : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, lvalue)) {
+    }
+
+    OpaqueValueMapping(CodeGenFunction &CGF,
+                       const OpaqueValueExpr *opaqueValue,
+                       RValue rvalue)
+      : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, rvalue)) {
+    }
+
+    void pop() {
+      Data.unbind(CGF);
+      Data.clear();
+    }
+
+    ~OpaqueValueMapping() {
+      if (Data.isValid()) Data.unbind(CGF);
+    }
+  };
+
+private:
+  CGDebugInfo *DebugInfo;
+  /// Used to create unique names for artificial VLA size debug info variables.
+  unsigned VLAExprCounter = 0;
+  bool DisableDebugInfo = false;
+
+  /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid
+  /// calling llvm.stacksave for multiple VLAs in the same scope.
+  bool DidCallStackSave = false;
+
+  /// IndirectBranch - The first time an indirect goto is seen we create a block
+  /// with an indirect branch.  Every time we see the address of a label taken,
+  /// we add the label to the indirect goto.  Every subsequent indirect goto is
+  /// codegen'd as a jump to the IndirectBranch's basic block.
+  llvm::IndirectBrInst *IndirectBranch = nullptr;
+
+  /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C
+  /// decls.
+  DeclMapTy LocalDeclMap;
+
+  // Keep track of the cleanups for callee-destructed parameters pushed to the
+  // cleanup stack so that they can be deactivated later.
+  llvm::DenseMap<const ParmVarDecl *, EHScopeStack::stable_iterator>
+      CalleeDestructedParamCleanups;
+
+  /// SizeArguments - If a ParmVarDecl had the pass_object_size attribute, this
+  /// will contain a mapping from said ParmVarDecl to its implicit "object_size"
+  /// parameter.
+  llvm::SmallDenseMap<const ParmVarDecl *, const ImplicitParamDecl *, 2>
+      SizeArguments;
+
+  /// Track escaped local variables with auto storage. Used during SEH
+  /// outlining to produce a call to llvm.localescape.
+  llvm::DenseMap<llvm::AllocaInst *, int> EscapedLocals;
+
+  /// LabelMap - This keeps track of the LLVM basic block for each C label.
+  llvm::DenseMap<const LabelDecl*, JumpDest> LabelMap;
+
+  // BreakContinueStack - This keeps track of where break and continue
+  // statements should jump to.
+  struct BreakContinue {
+    BreakContinue(JumpDest Break, JumpDest Continue)
+      : BreakBlock(Break), ContinueBlock(Continue) {}
+
+    JumpDest BreakBlock;
+    JumpDest ContinueBlock;
+  };
+  SmallVector<BreakContinue, 8> BreakContinueStack;
+
+  /// Handles cancellation exit points in OpenMP-related constructs.
+  class OpenMPCancelExitStack {
+    /// Tracks cancellation exit point and join point for cancel-related exit
+    /// and normal exit.
+    struct CancelExit {
+      CancelExit() = default;
+      CancelExit(OpenMPDirectiveKind Kind, JumpDest ExitBlock,
+                 JumpDest ContBlock)
+          : Kind(Kind), ExitBlock(ExitBlock), ContBlock(ContBlock) {}
+      OpenMPDirectiveKind Kind = llvm::omp::OMPD_unknown;
+      /// true if the exit block has been emitted already by the special
+      /// emitExit() call, false if the default codegen is used.
+      bool HasBeenEmitted = false;
+      JumpDest ExitBlock;
+      JumpDest ContBlock;
+    };
+
+    SmallVector<CancelExit, 8> Stack;
+
+  public:
+    OpenMPCancelExitStack() : Stack(1) {}
+    ~OpenMPCancelExitStack() = default;
+    /// Fetches the exit block for the current OpenMP construct.
+    JumpDest getExitBlock() const { return Stack.back().ExitBlock; }
+    /// Emits exit block with special codegen procedure specific for the related
+    /// OpenMP construct + emits code for normal construct cleanup.
+    void emitExit(CodeGenFunction &CGF, OpenMPDirectiveKind Kind,
+                  const llvm::function_ref<void(CodeGenFunction &)> CodeGen) {
+      if (Stack.back().Kind == Kind && getExitBlock().isValid()) {
+        assert(CGF.getOMPCancelDestination(Kind).isValid());
+        assert(CGF.HaveInsertPoint());
+        assert(!Stack.back().HasBeenEmitted);
+        auto IP = CGF.Builder.saveAndClearIP();
+        CGF.EmitBlock(Stack.back().ExitBlock.getBlock());
+        CodeGen(CGF);
+        CGF.EmitBranch(Stack.back().ContBlock.getBlock());
+        CGF.Builder.restoreIP(IP);
+        Stack.back().HasBeenEmitted = true;
+      }
+      CodeGen(CGF);
+    }
+    /// Enter the cancel supporting \a Kind construct.
+    /// \param Kind OpenMP directive that supports cancel constructs.
+    /// \param HasCancel true, if the construct has inner cancel directive,
+    /// false otherwise.
+    void enter(CodeGenFunction &CGF, OpenMPDirectiveKind Kind, bool HasCancel) {
+      Stack.push_back({Kind,
+                       HasCancel ? CGF.getJumpDestInCurrentScope("cancel.exit")
+                                 : JumpDest(),
+                       HasCancel ? CGF.getJumpDestInCurrentScope("cancel.cont")
+                                 : JumpDest()});
+    }
+    /// Emits default exit point for the cancel construct (if the special one
+    /// has not be used) + join point for cancel/normal exits.
+    void exit(CodeGenFunction &CGF) {
+      if (getExitBlock().isValid()) {
+        assert(CGF.getOMPCancelDestination(Stack.back().Kind).isValid());
+        bool HaveIP = CGF.HaveInsertPoint();
+        if (!Stack.back().HasBeenEmitted) {
+          if (HaveIP)
+            CGF.EmitBranchThroughCleanup(Stack.back().ContBlock);
+          CGF.EmitBlock(Stack.back().ExitBlock.getBlock());
+          CGF.EmitBranchThroughCleanup(Stack.back().ContBlock);
+        }
+        CGF.EmitBlock(Stack.back().ContBlock.getBlock());
+        if (!HaveIP) {
+          CGF.Builder.CreateUnreachable();
+          CGF.Builder.ClearInsertionPoint();
+        }
+      }
+      Stack.pop_back();
+    }
+  };
+  OpenMPCancelExitStack OMPCancelStack;
+
+  CodeGenPGO PGO;
+
+  /// Calculate branch weights appropriate for PGO data
+  llvm::MDNode *createProfileWeights(uint64_t TrueCount, uint64_t FalseCount);
+  llvm::MDNode *createProfileWeights(ArrayRef<uint64_t> Weights);
+  llvm::MDNode *createProfileWeightsForLoop(const Stmt *Cond,
+                                            uint64_t LoopCount);
+
+public:
+  /// Increment the profiler's counter for the given statement by \p StepV.
+  /// If \p StepV is null, the default increment is 1.
+  void incrementProfileCounter(const Stmt *S, llvm::Value *StepV = nullptr) {
+    if (CGM.getCodeGenOpts().hasProfileClangInstr())
+      PGO.emitCounterIncrement(Builder, S, StepV);
+    PGO.setCurrentStmt(S);
+  }
+
+  /// Get the profiler's count for the given statement.
+  uint64_t getProfileCount(const Stmt *S) {
+    Optional<uint64_t> Count = PGO.getStmtCount(S);
+    if (!Count.hasValue())
+      return 0;
+    return *Count;
+  }
+
+  /// Set the profiler's current count.
+  void setCurrentProfileCount(uint64_t Count) {
+    PGO.setCurrentRegionCount(Count);
+  }
+
+  /// Get the profiler's current count. This is generally the count for the most
+  /// recently incremented counter.
+  uint64_t getCurrentProfileCount() {
+    return PGO.getCurrentRegionCount();
+  }
+
+private:
+
+  /// SwitchInsn - This is nearest current switch instruction. It is null if
+  /// current context is not in a switch.
+  llvm::SwitchInst *SwitchInsn = nullptr;
+  /// The branch weights of SwitchInsn when doing instrumentation based PGO.
+  SmallVector<uint64_t, 16> *SwitchWeights = nullptr;
+
+  /// CaseRangeBlock - This block holds if condition check for last case
+  /// statement range in current switch instruction.
+  llvm::BasicBlock *CaseRangeBlock = nullptr;
+
+  /// OpaqueLValues - Keeps track of the current set of opaque value
+  /// expressions.
+  llvm::DenseMap<const OpaqueValueExpr *, LValue> OpaqueLValues;
+  llvm::DenseMap<const OpaqueValueExpr *, RValue> OpaqueRValues;
+
+  // VLASizeMap - This keeps track of the associated size for each VLA type.
+  // We track this by the size expression rather than the type itself because
+  // in certain situations, like a const qualifier applied to an VLA typedef,
+  // multiple VLA types can share the same size expression.
+  // FIXME: Maybe this could be a stack of maps that is pushed/popped as we
+  // enter/leave scopes.
+  llvm::DenseMap<const Expr*, llvm::Value*> VLASizeMap;
+
+  /// A block containing a single 'unreachable' instruction.  Created
+  /// lazily by getUnreachableBlock().
+  llvm::BasicBlock *UnreachableBlock = nullptr;
+
+  /// Counts of the number return expressions in the function.
+  unsigned NumReturnExprs = 0;
+
+  /// Count the number of simple (constant) return expressions in the function.
+  unsigned NumSimpleReturnExprs = 0;
+
+  /// The last regular (non-return) debug location (breakpoint) in the function.
+  SourceLocation LastStopPoint;
+
+public:
+  /// Source location information about the default argument or member
+  /// initializer expression we're evaluating, if any.
+  CurrentSourceLocExprScope CurSourceLocExprScope;
+  using SourceLocExprScopeGuard =
+      CurrentSourceLocExprScope::SourceLocExprScopeGuard;
+
+  /// A scope within which we are constructing the fields of an object which
+  /// might use a CXXDefaultInitExpr. This stashes away a 'this' value to use
+  /// if we need to evaluate a CXXDefaultInitExpr within the evaluation.
+  class FieldConstructionScope {
+  public:
+    FieldConstructionScope(CodeGenFunction &CGF, Address This)
+        : CGF(CGF), OldCXXDefaultInitExprThis(CGF.CXXDefaultInitExprThis) {
+      CGF.CXXDefaultInitExprThis = This;
+    }
+    ~FieldConstructionScope() {
+      CGF.CXXDefaultInitExprThis = OldCXXDefaultInitExprThis;
+    }
+
+  private:
+    CodeGenFunction &CGF;
+    Address OldCXXDefaultInitExprThis;
+  };
+
+  /// The scope of a CXXDefaultInitExpr. Within this scope, the value of 'this'
+  /// is overridden to be the object under construction.
+  class CXXDefaultInitExprScope  {
+  public:
+    CXXDefaultInitExprScope(CodeGenFunction &CGF, const CXXDefaultInitExpr *E)
+        : CGF(CGF), OldCXXThisValue(CGF.CXXThisValue),
+          OldCXXThisAlignment(CGF.CXXThisAlignment),
+          SourceLocScope(E, CGF.CurSourceLocExprScope) {
+      CGF.CXXThisValue = CGF.CXXDefaultInitExprThis.getPointer();
+      CGF.CXXThisAlignment = CGF.CXXDefaultInitExprThis.getAlignment();
+    }
+    ~CXXDefaultInitExprScope() {
+      CGF.CXXThisValue = OldCXXThisValue;
+      CGF.CXXThisAlignment = OldCXXThisAlignment;
+    }
+
+  public:
+    CodeGenFunction &CGF;
+    llvm::Value *OldCXXThisValue;
+    CharUnits OldCXXThisAlignment;
+    SourceLocExprScopeGuard SourceLocScope;
+  };
+
+  struct CXXDefaultArgExprScope : SourceLocExprScopeGuard {
+    CXXDefaultArgExprScope(CodeGenFunction &CGF, const CXXDefaultArgExpr *E)
+        : SourceLocExprScopeGuard(E, CGF.CurSourceLocExprScope) {}
+  };
+
+  /// The scope of an ArrayInitLoopExpr. Within this scope, the value of the
+  /// current loop index is overridden.
+  class ArrayInitLoopExprScope {
+  public:
+    ArrayInitLoopExprScope(CodeGenFunction &CGF, llvm::Value *Index)
+      : CGF(CGF), OldArrayInitIndex(CGF.ArrayInitIndex) {
+      CGF.ArrayInitIndex = Index;
+    }
+    ~ArrayInitLoopExprScope() {
+      CGF.ArrayInitIndex = OldArrayInitIndex;
+    }
+
+  private:
+    CodeGenFunction &CGF;
+    llvm::Value *OldArrayInitIndex;
+  };
+
+  class InlinedInheritingConstructorScope {
+  public:
+    InlinedInheritingConstructorScope(CodeGenFunction &CGF, GlobalDecl GD)
+        : CGF(CGF), OldCurGD(CGF.CurGD), OldCurFuncDecl(CGF.CurFuncDecl),
+          OldCurCodeDecl(CGF.CurCodeDecl),
+          OldCXXABIThisDecl(CGF.CXXABIThisDecl),
+          OldCXXABIThisValue(CGF.CXXABIThisValue),
+          OldCXXThisValue(CGF.CXXThisValue),
+          OldCXXABIThisAlignment(CGF.CXXABIThisAlignment),
+          OldCXXThisAlignment(CGF.CXXThisAlignment),
+          OldReturnValue(CGF.ReturnValue), OldFnRetTy(CGF.FnRetTy),
+          OldCXXInheritedCtorInitExprArgs(
+              std::move(CGF.CXXInheritedCtorInitExprArgs)) {
+      CGF.CurGD = GD;
+      CGF.CurFuncDecl = CGF.CurCodeDecl =
+          cast<CXXConstructorDecl>(GD.getDecl());
+      CGF.CXXABIThisDecl = nullptr;
+      CGF.CXXABIThisValue = nullptr;
+      CGF.CXXThisValue = nullptr;
+      CGF.CXXABIThisAlignment = CharUnits();
+      CGF.CXXThisAlignment = CharUnits();
+      CGF.ReturnValue = Address::invalid();
+      CGF.FnRetTy = QualType();
+      CGF.CXXInheritedCtorInitExprArgs.clear();
+    }
+    ~InlinedInheritingConstructorScope() {
+      CGF.CurGD = OldCurGD;
+      CGF.CurFuncDecl = OldCurFuncDecl;
+      CGF.CurCodeDecl = OldCurCodeDecl;
+      CGF.CXXABIThisDecl = OldCXXABIThisDecl;
+      CGF.CXXABIThisValue = OldCXXABIThisValue;
+      CGF.CXXThisValue = OldCXXThisValue;
+      CGF.CXXABIThisAlignment = OldCXXABIThisAlignment;
+      CGF.CXXThisAlignment = OldCXXThisAlignment;
+      CGF.ReturnValue = OldReturnValue;
+      CGF.FnRetTy = OldFnRetTy;
+      CGF.CXXInheritedCtorInitExprArgs =
+          std::move(OldCXXInheritedCtorInitExprArgs);
+    }
+
+  private:
+    CodeGenFunction &CGF;
+    GlobalDecl OldCurGD;
+    const Decl *OldCurFuncDecl;
+    const Decl *OldCurCodeDecl;
+    ImplicitParamDecl *OldCXXABIThisDecl;
+    llvm::Value *OldCXXABIThisValue;
+    llvm::Value *OldCXXThisValue;
+    CharUnits OldCXXABIThisAlignment;
+    CharUnits OldCXXThisAlignment;
+    Address OldReturnValue;
+    QualType OldFnRetTy;
+    CallArgList OldCXXInheritedCtorInitExprArgs;
+  };
+
+private:
+  /// CXXThisDecl - When generating code for a C++ member function,
+  /// this will hold the implicit 'this' declaration.
+  ImplicitParamDecl *CXXABIThisDecl = nullptr;
+  llvm::Value *CXXABIThisValue = nullptr;
+  llvm::Value *CXXThisValue = nullptr;
+  CharUnits CXXABIThisAlignment;
+  CharUnits CXXThisAlignment;
+
+  /// The value of 'this' to use when evaluating CXXDefaultInitExprs within
+  /// this expression.
+  Address CXXDefaultInitExprThis = Address::invalid();
+
+  /// The current array initialization index when evaluating an
+  /// ArrayInitIndexExpr within an ArrayInitLoopExpr.
+  llvm::Value *ArrayInitIndex = nullptr;
+
+  /// The values of function arguments to use when evaluating
+  /// CXXInheritedCtorInitExprs within this context.
+  CallArgList CXXInheritedCtorInitExprArgs;
+
+  /// CXXStructorImplicitParamDecl - When generating code for a constructor or
+  /// destructor, this will hold the implicit argument (e.g. VTT).
+  ImplicitParamDecl *CXXStructorImplicitParamDecl = nullptr;
+  llvm::Value *CXXStructorImplicitParamValue = nullptr;
+
+  /// OutermostConditional - Points to the outermost active
+  /// conditional control.  This is used so that we know if a
+  /// temporary should be destroyed conditionally.
+  ConditionalEvaluation *OutermostConditional = nullptr;
+
+  /// The current lexical scope.
+  LexicalScope *CurLexicalScope = nullptr;
+
+  /// The current source location that should be used for exception
+  /// handling code.
+  SourceLocation CurEHLocation;
+
+  /// BlockByrefInfos - For each __block variable, contains
+  /// information about the layout of the variable.
+  llvm::DenseMap<const ValueDecl *, BlockByrefInfo> BlockByrefInfos;
+
+  /// Used by -fsanitize=nullability-return to determine whether the return
+  /// value can be checked.
+  llvm::Value *RetValNullabilityPrecondition = nullptr;
+
+  /// Check if -fsanitize=nullability-return instrumentation is required for
+  /// this function.
+  bool requiresReturnValueNullabilityCheck() const {
+    return RetValNullabilityPrecondition;
+  }
+
+  /// Used to store precise source locations for return statements by the
+  /// runtime return value checks.
+  Address ReturnLocation = Address::invalid();
+
+  /// Check if the return value of this function requires sanitization.
+  bool requiresReturnValueCheck() const;
+
+  llvm::BasicBlock *TerminateLandingPad = nullptr;
+  llvm::BasicBlock *TerminateHandler = nullptr;
+  llvm::BasicBlock *TrapBB = nullptr;
+
+  /// Terminate funclets keyed by parent funclet pad.
+  llvm::MapVector<llvm::Value *, llvm::BasicBlock *> TerminateFunclets;
+
+  /// Largest vector width used in ths function. Will be used to create a
+  /// function attribute.
+  unsigned LargestVectorWidth = 0;
+
+  /// True if we need emit the life-time markers.
+  const bool ShouldEmitLifetimeMarkers;
+
+  /// Add OpenCL kernel arg metadata and the kernel attribute metadata to
+  /// the function metadata.
+  void EmitOpenCLKernelMetadata(const FunctionDecl *FD,
+                                llvm::Function *Fn);
+
+public:
+  CodeGenFunction(CodeGenModule &cgm, bool suppressNewContext=false);
+  ~CodeGenFunction();
+
+  CodeGenTypes &getTypes() const { return CGM.getTypes(); }
+  ASTContext &getContext() const { return CGM.getContext(); }
+  CGDebugInfo *getDebugInfo() {
+    if (DisableDebugInfo)
+      return nullptr;
+    return DebugInfo;
+  }
+  void disableDebugInfo() { DisableDebugInfo = true; }
+  void enableDebugInfo() { DisableDebugInfo = false; }
+
+  bool shouldUseFusedARCCalls() {
+    return CGM.getCodeGenOpts().OptimizationLevel == 0;
+  }
+
+  const LangOptions &getLangOpts() const { return CGM.getLangOpts(); }
+
+  /// Returns a pointer to the function's exception object and selector slot,
+  /// which is assigned in every landing pad.
+  Address getExceptionSlot();
+  Address getEHSelectorSlot();
+
+  /// Returns the contents of the function's exception object and selector
+  /// slots.
+  llvm::Value *getExceptionFromSlot();
+  llvm::Value *getSelectorFromSlot();
+
+  Address getNormalCleanupDestSlot();
+
+  llvm::BasicBlock *getUnreachableBlock() {
+    if (!UnreachableBlock) {
+      UnreachableBlock = createBasicBlock("unreachable");
+      new llvm::UnreachableInst(getLLVMContext(), UnreachableBlock);
+    }
+    return UnreachableBlock;
+  }
+
+  llvm::BasicBlock *getInvokeDest() {
+    if (!EHStack.requiresLandingPad()) return nullptr;
+    return getInvokeDestImpl();
+  }
+
+  bool currentFunctionUsesSEHTry() const { return CurSEHParent != nullptr; }
+
+  const TargetInfo &getTarget() const { return Target; }
+  llvm::LLVMContext &getLLVMContext() { return CGM.getLLVMContext(); }
+  const TargetCodeGenInfo &getTargetHooks() const {
+    return CGM.getTargetCodeGenInfo();
+  }
+
+  //===--------------------------------------------------------------------===//
+  //                                  Cleanups
+  //===--------------------------------------------------------------------===//
+
+  typedef void Destroyer(CodeGenFunction &CGF, Address addr, QualType ty);
+
+  void pushIrregularPartialArrayCleanup(llvm::Value *arrayBegin,
+                                        Address arrayEndPointer,
+                                        QualType elementType,
+                                        CharUnits elementAlignment,
+                                        Destroyer *destroyer);
+  void pushRegularPartialArrayCleanup(llvm::Value *arrayBegin,
+                                      llvm::Value *arrayEnd,
+                                      QualType elementType,
+                                      CharUnits elementAlignment,
+                                      Destroyer *destroyer);
+
+  void pushDestroy(QualType::DestructionKind dtorKind,
+                   Address addr, QualType type);
+  void pushEHDestroy(QualType::DestructionKind dtorKind,
+                     Address addr, QualType type);
+  void pushDestroy(CleanupKind kind, Address addr, QualType type,
+                   Destroyer *destroyer, bool useEHCleanupForArray);
+  void pushLifetimeExtendedDestroy(CleanupKind kind, Address addr,
+                                   QualType type, Destroyer *destroyer,
+                                   bool useEHCleanupForArray);
+  void pushCallObjectDeleteCleanup(const FunctionDecl *OperatorDelete,
+                                   llvm::Value *CompletePtr,
+                                   QualType ElementType);
+  void pushStackRestore(CleanupKind kind, Address SPMem);
+  void emitDestroy(Address addr, QualType type, Destroyer *destroyer,
+                   bool useEHCleanupForArray);
+  llvm::Function *generateDestroyHelper(Address addr, QualType type,
+                                        Destroyer *destroyer,
+                                        bool useEHCleanupForArray,
+                                        const VarDecl *VD);
+  void emitArrayDestroy(llvm::Value *begin, llvm::Value *end,
+                        QualType elementType, CharUnits elementAlign,
+                        Destroyer *destroyer,
+                        bool checkZeroLength, bool useEHCleanup);
+
+  Destroyer *getDestroyer(QualType::DestructionKind destructionKind);
+
+  /// Determines whether an EH cleanup is required to destroy a type
+  /// with the given destruction kind.
+  bool needsEHCleanup(QualType::DestructionKind kind) {
+    switch (kind) {
+    case QualType::DK_none:
+      return false;
+    case QualType::DK_cxx_destructor:
+    case QualType::DK_objc_weak_lifetime:
+    case QualType::DK_nontrivial_c_struct:
+      return getLangOpts().Exceptions;
+    case QualType::DK_objc_strong_lifetime:
+      return getLangOpts().Exceptions &&
+             CGM.getCodeGenOpts().ObjCAutoRefCountExceptions;
+    }
+    llvm_unreachable("bad destruction kind");
+  }
+
+  CleanupKind getCleanupKind(QualType::DestructionKind kind) {
+    return (needsEHCleanup(kind) ? NormalAndEHCleanup : NormalCleanup);
+  }
+
+  //===--------------------------------------------------------------------===//
+  //                                  Objective-C
+  //===--------------------------------------------------------------------===//
+
+  void GenerateObjCMethod(const ObjCMethodDecl *OMD);
+
+  void StartObjCMethod(const ObjCMethodDecl *MD, const ObjCContainerDecl *CD);
+
+  /// GenerateObjCGetter - Synthesize an Objective-C property getter function.
+  void GenerateObjCGetter(ObjCImplementationDecl *IMP,
+                          const ObjCPropertyImplDecl *PID);
+  void generateObjCGetterBody(const ObjCImplementationDecl *classImpl,
+                              const ObjCPropertyImplDecl *propImpl,
+                              const ObjCMethodDecl *GetterMothodDecl,
+                              llvm::Constant *AtomicHelperFn);
+
+  void GenerateObjCCtorDtorMethod(ObjCImplementationDecl *IMP,
+                                  ObjCMethodDecl *MD, bool ctor);
+
+  /// GenerateObjCSetter - Synthesize an Objective-C property setter function
+  /// for the given property.
+  void GenerateObjCSetter(ObjCImplementationDecl *IMP,
+                          const ObjCPropertyImplDecl *PID);
+  void generateObjCSetterBody(const ObjCImplementationDecl *classImpl,
+                              const ObjCPropertyImplDecl *propImpl,
+                              llvm::Constant *AtomicHelperFn);
+
+  //===--------------------------------------------------------------------===//
+  //                                  Block Bits
+  //===--------------------------------------------------------------------===//
+
+  /// Emit block literal.
+  /// \return an LLVM value which is a pointer to a struct which contains
+  /// information about the block, including the block invoke function, the
+  /// captured variables, etc.
+  llvm::Value *EmitBlockLiteral(const BlockExpr *);
+  static void destroyBlockInfos(CGBlockInfo *info);
+
+  llvm::Function *GenerateBlockFunction(GlobalDecl GD,
+                                        const CGBlockInfo &Info,
+                                        const DeclMapTy &ldm,
+                                        bool IsLambdaConversionToBlock,
+                                        bool BuildGlobalBlock);
+
+  /// Check if \p T is a C++ class that has a destructor that can throw.
+  static bool cxxDestructorCanThrow(QualType T);
+
+  llvm::Constant *GenerateCopyHelperFunction(const CGBlockInfo &blockInfo);
+  llvm::Constant *GenerateDestroyHelperFunction(const CGBlockInfo &blockInfo);
+  llvm::Constant *GenerateObjCAtomicSetterCopyHelperFunction(
+                                             const ObjCPropertyImplDecl *PID);
+  llvm::Constant *GenerateObjCAtomicGetterCopyHelperFunction(
+                                             const ObjCPropertyImplDecl *PID);
+  llvm::Value *EmitBlockCopyAndAutorelease(llvm::Value *Block, QualType Ty);
+
+  void BuildBlockRelease(llvm::Value *DeclPtr, BlockFieldFlags flags,
+                         bool CanThrow);
+
+  class AutoVarEmission;
+
+  void emitByrefStructureInit(const AutoVarEmission &emission);
+
+  /// Enter a cleanup to destroy a __block variable.  Note that this
+  /// cleanup should be a no-op if the variable hasn't left the stack
+  /// yet; if a cleanup is required for the variable itself, that needs
+  /// to be done externally.
+  ///
+  /// \param Kind Cleanup kind.
+  ///
+  /// \param Addr When \p LoadBlockVarAddr is false, the address of the __block
+  /// structure that will be passed to _Block_object_dispose. When
+  /// \p LoadBlockVarAddr is true, the address of the field of the block
+  /// structure that holds the address of the __block structure.
+  ///
+  /// \param Flags The flag that will be passed to _Block_object_dispose.
+  ///
+  /// \param LoadBlockVarAddr Indicates whether we need to emit a load from
+  /// \p Addr to get the address of the __block structure.
+  void enterByrefCleanup(CleanupKind Kind, Address Addr, BlockFieldFlags Flags,
+                         bool LoadBlockVarAddr, bool CanThrow);
+
+  void setBlockContextParameter(const ImplicitParamDecl *D, unsigned argNum,
+                                llvm::Value *ptr);
+
+  Address LoadBlockStruct();
+  Address GetAddrOfBlockDecl(const VarDecl *var);
+
+  /// BuildBlockByrefAddress - Computes the location of the
+  /// data in a variable which is declared as __block.
+  Address emitBlockByrefAddress(Address baseAddr, const VarDecl *V,
+                                bool followForward = true);
+  Address emitBlockByrefAddress(Address baseAddr,
+                                const BlockByrefInfo &info,
+                                bool followForward,
+                                const llvm::Twine &name);
+
+  const BlockByrefInfo &getBlockByrefInfo(const VarDecl *var);
+
+  QualType BuildFunctionArgList(GlobalDecl GD, FunctionArgList &Args);
+
+  void GenerateCode(GlobalDecl GD, llvm::Function *Fn,
+                    const CGFunctionInfo &FnInfo);
+
+  /// Annotate the function with an attribute that disables TSan checking at
+  /// runtime.
+  void markAsIgnoreThreadCheckingAtRuntime(llvm::Function *Fn);
+
+  /// Emit code for the start of a function.
+  /// \param Loc       The location to be associated with the function.
+  /// \param StartLoc  The location of the function body.
+  void StartFunction(GlobalDecl GD,
+                     QualType RetTy,
+                     llvm::Function *Fn,
+                     const CGFunctionInfo &FnInfo,
+                     const FunctionArgList &Args,
+                     SourceLocation Loc = SourceLocation(),
+                     SourceLocation StartLoc = SourceLocation());
+
+  static bool IsConstructorDelegationValid(const CXXConstructorDecl *Ctor);
+
+  void EmitConstructorBody(FunctionArgList &Args);
+  void EmitDestructorBody(FunctionArgList &Args);
+  void emitImplicitAssignmentOperatorBody(FunctionArgList &Args);
+  void EmitFunctionBody(const Stmt *Body);
+  void EmitBlockWithFallThrough(llvm::BasicBlock *BB, const Stmt *S);
+
+  void EmitForwardingCallToLambda(const CXXMethodDecl *LambdaCallOperator,
+                                  CallArgList &CallArgs);
+  void EmitLambdaBlockInvokeBody();
+  void EmitLambdaDelegatingInvokeBody(const CXXMethodDecl *MD);
+  void EmitLambdaStaticInvokeBody(const CXXMethodDecl *MD);
+  void EmitLambdaVLACapture(const VariableArrayType *VAT, LValue LV) {
+    EmitStoreThroughLValue(RValue::get(VLASizeMap[VAT->getSizeExpr()]), LV);
+  }
+  void EmitAsanPrologueOrEpilogue(bool Prologue);
+
+  /// Emit the unified return block, trying to avoid its emission when
+  /// possible.
+  /// \return The debug location of the user written return statement if the
+  /// return block is is avoided.
+  llvm::DebugLoc EmitReturnBlock();
+
+  /// FinishFunction - Complete IR generation of the current function. It is
+  /// legal to call this function even if there is no current insertion point.
+  void FinishFunction(SourceLocation EndLoc=SourceLocation());
+
+  void StartThunk(llvm::Function *Fn, GlobalDecl GD,
+                  const CGFunctionInfo &FnInfo, bool IsUnprototyped);
+
+  void EmitCallAndReturnForThunk(llvm::FunctionCallee Callee,
+                                 const ThunkInfo *Thunk, bool IsUnprototyped);
+
+  void FinishThunk();
+
+  /// Emit a musttail call for a thunk with a potentially adjusted this pointer.
+  void EmitMustTailThunk(GlobalDecl GD, llvm::Value *AdjustedThisPtr,
+                         llvm::FunctionCallee Callee);
+
+  /// Generate a thunk for the given method.
+  void generateThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo,
+                     GlobalDecl GD, const ThunkInfo &Thunk,
+                     bool IsUnprototyped);
+
+  llvm::Function *GenerateVarArgsThunk(llvm::Function *Fn,
+                                       const CGFunctionInfo &FnInfo,
+                                       GlobalDecl GD, const ThunkInfo &Thunk);
+
+  void EmitCtorPrologue(const CXXConstructorDecl *CD, CXXCtorType Type,
+                        FunctionArgList &Args);
+
+  void EmitInitializerForField(FieldDecl *Field, LValue LHS, Expr *Init);
+
+  /// Struct with all information about dynamic [sub]class needed to set vptr.
+  struct VPtr {
+    BaseSubobject Base;
+    const CXXRecordDecl *NearestVBase;
+    CharUnits OffsetFromNearestVBase;
+    const CXXRecordDecl *VTableClass;
+  };
+
+  /// Initialize the vtable pointer of the given subobject.
+  void InitializeVTablePointer(const VPtr &vptr);
+
+  typedef llvm::SmallVector<VPtr, 4> VPtrsVector;
+
+  typedef llvm::SmallPtrSet<const CXXRecordDecl *, 4> VisitedVirtualBasesSetTy;
+  VPtrsVector getVTablePointers(const CXXRecordDecl *VTableClass);
+
+  void getVTablePointers(BaseSubobject Base, const CXXRecordDecl *NearestVBase,
+                         CharUnits OffsetFromNearestVBase,
+                         bool BaseIsNonVirtualPrimaryBase,
+                         const CXXRecordDecl *VTableClass,
+                         VisitedVirtualBasesSetTy &VBases, VPtrsVector &vptrs);
+
+  void InitializeVTablePointers(const CXXRecordDecl *ClassDecl);
+
+  /// GetVTablePtr - Return the Value of the vtable pointer member pointed
+  /// to by This.
+  llvm::Value *GetVTablePtr(Address This, llvm::Type *VTableTy,
+                            const CXXRecordDecl *VTableClass);
+
+  enum CFITypeCheckKind {
+    CFITCK_VCall,
+    CFITCK_NVCall,
+    CFITCK_DerivedCast,
+    CFITCK_UnrelatedCast,
+    CFITCK_ICall,
+    CFITCK_NVMFCall,
+    CFITCK_VMFCall,
+  };
+
+  /// Derived is the presumed address of an object of type T after a
+  /// cast. If T is a polymorphic class type, emit a check that the virtual
+  /// table for Derived belongs to a class derived from T.
+  void EmitVTablePtrCheckForCast(QualType T, llvm::Value *Derived,
+                                 bool MayBeNull, CFITypeCheckKind TCK,
+                                 SourceLocation Loc);
+
+  /// EmitVTablePtrCheckForCall - Virtual method MD is being called via VTable.
+  /// If vptr CFI is enabled, emit a check that VTable is valid.
+  void EmitVTablePtrCheckForCall(const CXXRecordDecl *RD, llvm::Value *VTable,
+                                 CFITypeCheckKind TCK, SourceLocation Loc);
+
+  /// EmitVTablePtrCheck - Emit a check that VTable is a valid virtual table for
+  /// RD using llvm.type.test.
+  void EmitVTablePtrCheck(const CXXRecordDecl *RD, llvm::Value *VTable,
+                          CFITypeCheckKind TCK, SourceLocation Loc);
+
+  /// If whole-program virtual table optimization is enabled, emit an assumption
+  /// that VTable is a member of RD's type identifier. Or, if vptr CFI is
+  /// enabled, emit a check that VTable is a member of RD's type identifier.
+  void EmitTypeMetadataCodeForVCall(const CXXRecordDecl *RD,
+                                    llvm::Value *VTable, SourceLocation Loc);
+
+  /// Returns whether we should perform a type checked load when loading a
+  /// virtual function for virtual calls to members of RD. This is generally
+  /// true when both vcall CFI and whole-program-vtables are enabled.
+  bool ShouldEmitVTableTypeCheckedLoad(const CXXRecordDecl *RD);
+
+  /// Emit a type checked load from the given vtable.
+  llvm::Value *EmitVTableTypeCheckedLoad(const CXXRecordDecl *RD, llvm::Value *VTable,
+                                         uint64_t VTableByteOffset);
+
+  /// EnterDtorCleanups - Enter the cleanups necessary to complete the
+  /// given phase of destruction for a destructor.  The end result
+  /// should call destructors on members and base classes in reverse
+  /// order of their construction.
+  void EnterDtorCleanups(const CXXDestructorDecl *Dtor, CXXDtorType Type);
+
+  /// ShouldInstrumentFunction - Return true if the current function should be
+  /// instrumented with __cyg_profile_func_* calls
+  bool ShouldInstrumentFunction();
+
+  /// ShouldXRayInstrument - Return true if the current function should be
+  /// instrumented with XRay nop sleds.
+  bool ShouldXRayInstrumentFunction() const;
+
+  /// AlwaysEmitXRayCustomEvents - Return true if we must unconditionally emit
+  /// XRay custom event handling calls.
+  bool AlwaysEmitXRayCustomEvents() const;
+
+  /// AlwaysEmitXRayTypedEvents - Return true if clang must unconditionally emit
+  /// XRay typed event handling calls.
+  bool AlwaysEmitXRayTypedEvents() const;
+
+  /// Encode an address into a form suitable for use in a function prologue.
+  llvm::Constant *EncodeAddrForUseInPrologue(llvm::Function *F,
+                                             llvm::Constant *Addr);
+
+  /// Decode an address used in a function prologue, encoded by \c
+  /// EncodeAddrForUseInPrologue.
+  llvm::Value *DecodeAddrUsedInPrologue(llvm::Value *F,
+                                        llvm::Value *EncodedAddr);
+
+  /// EmitFunctionProlog - Emit the target specific LLVM code to load the
+  /// arguments for the given function. This is also responsible for naming the
+  /// LLVM function arguments.
+  void EmitFunctionProlog(const CGFunctionInfo &FI,
+                          llvm::Function *Fn,
+                          const FunctionArgList &Args);
+
+  /// EmitFunctionEpilog - Emit the target specific LLVM code to return the
+  /// given temporary.
+  void EmitFunctionEpilog(const CGFunctionInfo &FI, bool EmitRetDbgLoc,
+                          SourceLocation EndLoc);
+
+  /// Emit a test that checks if the return value \p RV is nonnull.
+  void EmitReturnValueCheck(llvm::Value *RV);
+
+  /// EmitStartEHSpec - Emit the start of the exception spec.
+  void EmitStartEHSpec(const Decl *D);
+
+  /// EmitEndEHSpec - Emit the end of the exception spec.
+  void EmitEndEHSpec(const Decl *D);
+
+  /// getTerminateLandingPad - Return a landing pad that just calls terminate.
+  llvm::BasicBlock *getTerminateLandingPad();
+
+  /// getTerminateLandingPad - Return a cleanup funclet that just calls
+  /// terminate.
+  llvm::BasicBlock *getTerminateFunclet();
+
+  /// getTerminateHandler - Return a handler (not a landing pad, just
+  /// a catch handler) that just calls terminate.  This is used when
+  /// a terminate scope encloses a try.
+  llvm::BasicBlock *getTerminateHandler();
+
+  llvm::Type *ConvertTypeForMem(QualType T);
+  llvm::Type *ConvertType(QualType T);
+  llvm::Type *ConvertType(const TypeDecl *T) {
+    return ConvertType(getContext().getTypeDeclType(T));
+  }
+
+  /// LoadObjCSelf - Load the value of self. This function is only valid while
+  /// generating code for an Objective-C method.
+  llvm::Value *LoadObjCSelf();
+
+  /// TypeOfSelfObject - Return type of object that this self represents.
+  QualType TypeOfSelfObject();
+
+  /// getEvaluationKind - Return the TypeEvaluationKind of QualType \c T.
+  static TypeEvaluationKind getEvaluationKind(QualType T);
+
+  static bool hasScalarEvaluationKind(QualType T) {
+    return getEvaluationKind(T) == TEK_Scalar;
+  }
+
+  static bool hasAggregateEvaluationKind(QualType T) {
+    return getEvaluationKind(T) == TEK_Aggregate;
+  }
+
+  /// createBasicBlock - Create an LLVM basic block.
+  llvm::BasicBlock *createBasicBlock(const Twine &name = "",
+                                     llvm::Function *parent = nullptr,
+                                     llvm::BasicBlock *before = nullptr) {
+    return llvm::BasicBlock::Create(getLLVMContext(), name, parent, before);
+  }
+
+  /// getBasicBlockForLabel - Return the LLVM basicblock that the specified
+  /// label maps to.
+  JumpDest getJumpDestForLabel(const LabelDecl *S);
+
+  /// SimplifyForwardingBlocks - If the given basic block is only a branch to
+  /// another basic block, simplify it. This assumes that no other code could
+  /// potentially reference the basic block.
+  void SimplifyForwardingBlocks(llvm::BasicBlock *BB);
+
+  /// EmitBlock - Emit the given block \arg BB and set it as the insert point,
+  /// adding a fall-through branch from the current insert block if
+  /// necessary. It is legal to call this function even if there is no current
+  /// insertion point.
+  ///
+  /// IsFinished - If true, indicates that the caller has finished emitting
+  /// branches to the given block and does not expect to emit code into it. This
+  /// means the block can be ignored if it is unreachable.
+  void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false);
+
+  /// EmitBlockAfterUses - Emit the given block somewhere hopefully
+  /// near its uses, and leave the insertion point in it.
+  void EmitBlockAfterUses(llvm::BasicBlock *BB);
+
+  /// EmitBranch - Emit a branch to the specified basic block from the current
+  /// insert block, taking care to avoid creation of branches from dummy
+  /// blocks. It is legal to call this function even if there is no current
+  /// insertion point.
+  ///
+  /// This function clears the current insertion point. The caller should follow
+  /// calls to this function with calls to Emit*Block prior to generation new
+  /// code.
+  void EmitBranch(llvm::BasicBlock *Block);
+
+  /// HaveInsertPoint - True if an insertion point is defined. If not, this
+  /// indicates that the current code being emitted is unreachable.
+  bool HaveInsertPoint() const {
+    return Builder.GetInsertBlock() != nullptr;
+  }
+
+  /// EnsureInsertPoint - Ensure that an insertion point is defined so that
+  /// emitted IR has a place to go. Note that by definition, if this function
+  /// creates a block then that block is unreachable; callers may do better to
+  /// detect when no insertion point is defined and simply skip IR generation.
+  void EnsureInsertPoint() {
+    if (!HaveInsertPoint())
+      EmitBlock(createBasicBlock());
+  }
+
+  /// ErrorUnsupported - Print out an error that codegen doesn't support the
+  /// specified stmt yet.
+  void ErrorUnsupported(const Stmt *S, const char *Type);
+
+  //===--------------------------------------------------------------------===//
+  //                                  Helpers
+  //===--------------------------------------------------------------------===//
+
+  LValue MakeAddrLValue(Address Addr, QualType T,
+                        AlignmentSource Source = AlignmentSource::Type) {
+    return LValue::MakeAddr(Addr, T, getContext(), LValueBaseInfo(Source),
+                            CGM.getTBAAAccessInfo(T));
+  }
+
+  LValue MakeAddrLValue(Address Addr, QualType T, LValueBaseInfo BaseInfo,
+                        TBAAAccessInfo TBAAInfo) {
+    return LValue::MakeAddr(Addr, T, getContext(), BaseInfo, TBAAInfo);
+  }
+
+  LValue MakeAddrLValue(llvm::Value *V, QualType T, CharUnits Alignment,
+                        AlignmentSource Source = AlignmentSource::Type) {
+    return LValue::MakeAddr(Address(V, Alignment), T, getContext(),
+                            LValueBaseInfo(Source), CGM.getTBAAAccessInfo(T));
+  }
+
+  LValue MakeAddrLValue(llvm::Value *V, QualType T, CharUnits Alignment,
+                        LValueBaseInfo BaseInfo, TBAAAccessInfo TBAAInfo) {
+    return LValue::MakeAddr(Address(V, Alignment), T, getContext(),
+                            BaseInfo, TBAAInfo);
+  }
+
+  LValue MakeNaturalAlignPointeeAddrLValue(llvm::Value *V, QualType T);
+  LValue MakeNaturalAlignAddrLValue(llvm::Value *V, QualType T);
+  CharUnits getNaturalTypeAlignment(QualType T,
+                                    LValueBaseInfo *BaseInfo = nullptr,
+                                    TBAAAccessInfo *TBAAInfo = nullptr,
+                                    bool forPointeeType = false);
+  CharUnits getNaturalPointeeTypeAlignment(QualType T,
+                                           LValueBaseInfo *BaseInfo = nullptr,
+                                           TBAAAccessInfo *TBAAInfo = nullptr);
+
+  Address EmitLoadOfReference(LValue RefLVal,
+                              LValueBaseInfo *PointeeBaseInfo = nullptr,
+                              TBAAAccessInfo *PointeeTBAAInfo = nullptr);
+  LValue EmitLoadOfReferenceLValue(LValue RefLVal);
+  LValue EmitLoadOfReferenceLValue(Address RefAddr, QualType RefTy,
+                                   AlignmentSource Source =
+                                       AlignmentSource::Type) {
+    LValue RefLVal = MakeAddrLValue(RefAddr, RefTy, LValueBaseInfo(Source),
+                                    CGM.getTBAAAccessInfo(RefTy));
+    return EmitLoadOfReferenceLValue(RefLVal);
+  }
+
+  Address EmitLoadOfPointer(Address Ptr, const PointerType *PtrTy,
+                            LValueBaseInfo *BaseInfo = nullptr,
+                            TBAAAccessInfo *TBAAInfo = nullptr);
+  LValue EmitLoadOfPointerLValue(Address Ptr, const PointerType *PtrTy);
+
+  /// CreateTempAlloca - This creates an alloca and inserts it into the entry
+  /// block if \p ArraySize is nullptr, otherwise inserts it at the current
+  /// insertion point of the builder. The caller is responsible for setting an
+  /// appropriate alignment on
+  /// the alloca.
+  ///
+  /// \p ArraySize is the number of array elements to be allocated if it
+  ///    is not nullptr.
+  ///
+  /// LangAS::Default is the address space of pointers to local variables and
+  /// temporaries, as exposed in the source language. In certain
+  /// configurations, this is not the same as the alloca address space, and a
+  /// cast is needed to lift the pointer from the alloca AS into
+  /// LangAS::Default. This can happen when the target uses a restricted
+  /// address space for the stack but the source language requires
+  /// LangAS::Default to be a generic address space. The latter condition is
+  /// common for most programming languages; OpenCL is an exception in that
+  /// LangAS::Default is the private address space, which naturally maps
+  /// to the stack.
+  ///
+  /// Because the address of a temporary is often exposed to the program in
+  /// various ways, this function will perform the cast. The original alloca
+  /// instruction is returned through \p Alloca if it is not nullptr.
+  ///
+  /// The cast is not performaed in CreateTempAllocaWithoutCast. This is
+  /// more efficient if the caller knows that the address will not be exposed.
+  llvm::AllocaInst *CreateTempAlloca(llvm::Type *Ty, const Twine &Name = "tmp",
+                                     llvm::Value *ArraySize = nullptr);
+  Address CreateTempAlloca(llvm::Type *Ty, CharUnits align,
+                           const Twine &Name = "tmp",
+                           llvm::Value *ArraySize = nullptr,
+                           Address *Alloca = nullptr);
+  Address CreateTempAllocaWithoutCast(llvm::Type *Ty, CharUnits align,
+                                      const Twine &Name = "tmp",
+                                      llvm::Value *ArraySize = nullptr);
+
+  /// CreateDefaultAlignedTempAlloca - This creates an alloca with the
+  /// default ABI alignment of the given LLVM type.
+  ///
+  /// IMPORTANT NOTE: This is *not* generally the right alignment for
+  /// any given AST type that happens to have been lowered to the
+  /// given IR type.  This should only ever be used for function-local,
+  /// IR-driven manipulations like saving and restoring a value.  Do
+  /// not hand this address off to arbitrary IRGen routines, and especially
+  /// do not pass it as an argument to a function that might expect a
+  /// properly ABI-aligned value.
+  Address CreateDefaultAlignTempAlloca(llvm::Type *Ty,
+                                       const Twine &Name = "tmp");
+
+  /// InitTempAlloca - Provide an initial value for the given alloca which
+  /// will be observable at all locations in the function.
+  ///
+  /// The address should be something that was returned from one of
+  /// the CreateTempAlloca or CreateMemTemp routines, and the
+  /// initializer must be valid in the entry block (i.e. it must
+  /// either be a constant or an argument value).
+  void InitTempAlloca(Address Alloca, llvm::Value *Value);
+
+  /// CreateIRTemp - Create a temporary IR object of the given type, with
+  /// appropriate alignment. This routine should only be used when an temporary
+  /// value needs to be stored into an alloca (for example, to avoid explicit
+  /// PHI construction), but the type is the IR type, not the type appropriate
+  /// for storing in memory.
+  ///
+  /// That is, this is exactly equivalent to CreateMemTemp, but calling
+  /// ConvertType instead of ConvertTypeForMem.
+  Address CreateIRTemp(QualType T, const Twine &Name = "tmp");
+
+  /// CreateMemTemp - Create a temporary memory object of the given type, with
+  /// appropriate alignmen and cast it to the default address space. Returns
+  /// the original alloca instruction by \p Alloca if it is not nullptr.
+  Address CreateMemTemp(QualType T, const Twine &Name = "tmp",
+                        Address *Alloca = nullptr);
+  Address CreateMemTemp(QualType T, CharUnits Align, const Twine &Name = "tmp",
+                        Address *Alloca = nullptr);
+
+  /// CreateMemTemp - Create a temporary memory object of the given type, with
+  /// appropriate alignmen without casting it to the default address space.
+  Address CreateMemTempWithoutCast(QualType T, const Twine &Name = "tmp");
+  Address CreateMemTempWithoutCast(QualType T, CharUnits Align,
+                                   const Twine &Name = "tmp");
+
+  /// CreateAggTemp - Create a temporary memory object for the given
+  /// aggregate type.
+  AggValueSlot CreateAggTemp(QualType T, const Twine &Name = "tmp") {
+    return AggValueSlot::forAddr(CreateMemTemp(T, Name),
+                                 T.getQualifiers(),
+                                 AggValueSlot::IsNotDestructed,
+                                 AggValueSlot::DoesNotNeedGCBarriers,
+                                 AggValueSlot::IsNotAliased,
+                                 AggValueSlot::DoesNotOverlap);
+  }
+
+  /// Emit a cast to void* in the appropriate address space.
+  llvm::Value *EmitCastToVoidPtr(llvm::Value *value);
+
+  /// EvaluateExprAsBool - Perform the usual unary conversions on the specified
+  /// expression and compare the result against zero, returning an Int1Ty value.
+  llvm::Value *EvaluateExprAsBool(const Expr *E);
+
+  /// EmitIgnoredExpr - Emit an expression in a context which ignores the result.
+  void EmitIgnoredExpr(const Expr *E);
+
+  /// EmitAnyExpr - Emit code to compute the specified expression which can have
+  /// any type.  The result is returned as an RValue struct.  If this is an
+  /// aggregate expression, the aggloc/agglocvolatile arguments indicate where
+  /// the result should be returned.
+  ///
+  /// \param ignoreResult True if the resulting value isn't used.
+  RValue EmitAnyExpr(const Expr *E,
+                     AggValueSlot aggSlot = AggValueSlot::ignored(),
+                     bool ignoreResult = false);
+
+  // EmitVAListRef - Emit a "reference" to a va_list; this is either the address
+  // or the value of the expression, depending on how va_list is defined.
+  Address EmitVAListRef(const Expr *E);
+
+  /// Emit a "reference" to a __builtin_ms_va_list; this is
+  /// always the value of the expression, because a __builtin_ms_va_list is a
+  /// pointer to a char.
+  Address EmitMSVAListRef(const Expr *E);
+
+  /// EmitAnyExprToTemp - Similarly to EmitAnyExpr(), however, the result will
+  /// always be accessible even if no aggregate location is provided.
+  RValue EmitAnyExprToTemp(const Expr *E);
+
+  /// EmitAnyExprToMem - Emits the code necessary to evaluate an
+  /// arbitrary expression into the given memory location.
+  void EmitAnyExprToMem(const Expr *E, Address Location,
+                        Qualifiers Quals, bool IsInitializer);
+
+  void EmitAnyExprToExn(const Expr *E, Address Addr);
+
+  /// EmitExprAsInit - Emits the code necessary to initialize a
+  /// location in memory with the given initializer.
+  void EmitExprAsInit(const Expr *init, const ValueDecl *D, LValue lvalue,
+                      bool capturedByInit);
+
+  /// hasVolatileMember - returns true if aggregate type has a volatile
+  /// member.
+  bool hasVolatileMember(QualType T) {
+    if (const RecordType *RT = T->getAs<RecordType>()) {
+      const RecordDecl *RD = cast<RecordDecl>(RT->getDecl());
+      return RD->hasVolatileMember();
+    }
+    return false;
+  }
+
+  /// Determine whether a return value slot may overlap some other object.
+  AggValueSlot::Overlap_t getOverlapForReturnValue() {
+    // FIXME: Assuming no overlap here breaks guaranteed copy elision for base
+    // class subobjects. These cases may need to be revisited depending on the
+    // resolution of the relevant core issue.
+    return AggValueSlot::DoesNotOverlap;
+  }
+
+  /// Determine whether a field initialization may overlap some other object.
+  AggValueSlot::Overlap_t getOverlapForFieldInit(const FieldDecl *FD);
+
+  /// Determine whether a base class initialization may overlap some other
+  /// object.
+  AggValueSlot::Overlap_t getOverlapForBaseInit(const CXXRecordDecl *RD,
+                                                const CXXRecordDecl *BaseRD,
+                                                bool IsVirtual);
+
+  /// Emit an aggregate assignment.
+  void EmitAggregateAssign(LValue Dest, LValue Src, QualType EltTy) {
+    bool IsVolatile = hasVolatileMember(EltTy);
+    EmitAggregateCopy(Dest, Src, EltTy, AggValueSlot::MayOverlap, IsVolatile);
+  }
+
+  void EmitAggregateCopyCtor(LValue Dest, LValue Src,
+                             AggValueSlot::Overlap_t MayOverlap) {
+    EmitAggregateCopy(Dest, Src, Src.getType(), MayOverlap);
+  }
+
+  /// EmitAggregateCopy - Emit an aggregate copy.
+  ///
+  /// \param isVolatile \c true iff either the source or the destination is
+  ///        volatile.
+  /// \param MayOverlap Whether the tail padding of the destination might be
+  ///        occupied by some other object. More efficient code can often be
+  ///        generated if not.
+  void EmitAggregateCopy(LValue Dest, LValue Src, QualType EltTy,
+                         AggValueSlot::Overlap_t MayOverlap,
+                         bool isVolatile = false);
+
+  /// GetAddrOfLocalVar - Return the address of a local variable.
+  Address GetAddrOfLocalVar(const VarDecl *VD) {
+    auto it = LocalDeclMap.find(VD);
+    assert(it != LocalDeclMap.end() &&
+           "Invalid argument to GetAddrOfLocalVar(), no decl!");
+    return it->second;
+  }
+
+  /// Given an opaque value expression, return its LValue mapping if it exists,
+  /// otherwise create one.
+  LValue getOrCreateOpaqueLValueMapping(const OpaqueValueExpr *e);
+
+  /// Given an opaque value expression, return its RValue mapping if it exists,
+  /// otherwise create one.
+  RValue getOrCreateOpaqueRValueMapping(const OpaqueValueExpr *e);
+
+  /// Get the index of the current ArrayInitLoopExpr, if any.
+  llvm::Value *getArrayInitIndex() { return ArrayInitIndex; }
+
+  /// getAccessedFieldNo - Given an encoded value and a result number, return
+  /// the input field number being accessed.
+  static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts);
+
+  llvm::BlockAddress *GetAddrOfLabel(const LabelDecl *L);
+  llvm::BasicBlock *GetIndirectGotoBlock();
+
+  /// Check if \p E is a C++ "this" pointer wrapped in value-preserving casts.
+  static bool IsWrappedCXXThis(const Expr *E);
+
+  /// EmitNullInitialization - Generate code to set a value of the given type to
+  /// null, If the type contains data member pointers, they will be initialized
+  /// to -1 in accordance with the Itanium C++ ABI.
+  void EmitNullInitialization(Address DestPtr, QualType Ty);
+
+  /// Emits a call to an LLVM variable-argument intrinsic, either
+  /// \c llvm.va_start or \c llvm.va_end.
+  /// \param ArgValue A reference to the \c va_list as emitted by either
+  /// \c EmitVAListRef or \c EmitMSVAListRef.
+  /// \param IsStart If \c true, emits a call to \c llvm.va_start; otherwise,
+  /// calls \c llvm.va_end.
+  llvm::Value *EmitVAStartEnd(llvm::Value *ArgValue, bool IsStart);
+
+  /// Generate code to get an argument from the passed in pointer
+  /// and update it accordingly.
+  /// \param VE The \c VAArgExpr for which to generate code.
+  /// \param VAListAddr Receives a reference to the \c va_list as emitted by
+  /// either \c EmitVAListRef or \c EmitMSVAListRef.
+  /// \returns A pointer to the argument.
+  // FIXME: We should be able to get rid of this method and use the va_arg
+  // instruction in LLVM instead once it works well enough.
+  Address EmitVAArg(VAArgExpr *VE, Address &VAListAddr);
+
+  /// emitArrayLength - Compute the length of an array, even if it's a
+  /// VLA, and drill down to the base element type.
+  llvm::Value *emitArrayLength(const ArrayType *arrayType,
+                               QualType &baseType,
+                               Address &addr);
+
+  /// EmitVLASize - Capture all the sizes for the VLA expressions in
+  /// the given variably-modified type and store them in the VLASizeMap.
+  ///
+  /// This function can be called with a null (unreachable) insert point.
+  void EmitVariablyModifiedType(QualType Ty);
+
+  struct VlaSizePair {
+    llvm::Value *NumElts;
+    QualType Type;
+
+    VlaSizePair(llvm::Value *NE, QualType T) : NumElts(NE), Type(T) {}
+  };
+
+  /// Return the number of elements for a single dimension
+  /// for the given array type.
+  VlaSizePair getVLAElements1D(const VariableArrayType *vla);
+  VlaSizePair getVLAElements1D(QualType vla);
+
+  /// Returns an LLVM value that corresponds to the size,
+  /// in non-variably-sized elements, of a variable length array type,
+  /// plus that largest non-variably-sized element type.  Assumes that
+  /// the type has already been emitted with EmitVariablyModifiedType.
+  VlaSizePair getVLASize(const VariableArrayType *vla);
+  VlaSizePair getVLASize(QualType vla);
+
+  /// LoadCXXThis - Load the value of 'this'. This function is only valid while
+  /// generating code for an C++ member function.
+  llvm::Value *LoadCXXThis() {
+    assert(CXXThisValue && "no 'this' value for this function");
+    return CXXThisValue;
+  }
+  Address LoadCXXThisAddress();
+
+  /// LoadCXXVTT - Load the VTT parameter to base constructors/destructors have
+  /// virtual bases.
+  // FIXME: Every place that calls LoadCXXVTT is something
+  // that needs to be abstracted properly.
+  llvm::Value *LoadCXXVTT() {
+    assert(CXXStructorImplicitParamValue && "no VTT value for this function");
+    return CXXStructorImplicitParamValue;
+  }
+
+  /// GetAddressOfBaseOfCompleteClass - Convert the given pointer to a
+  /// complete class to the given direct base.
+  Address
+  GetAddressOfDirectBaseInCompleteClass(Address Value,
+                                        const CXXRecordDecl *Derived,
+                                        const CXXRecordDecl *Base,
+                                        bool BaseIsVirtual);
+
+  static bool ShouldNullCheckClassCastValue(const CastExpr *Cast);
+
+  /// GetAddressOfBaseClass - This function will add the necessary delta to the
+  /// load of 'this' and returns address of the base class.
+  Address GetAddressOfBaseClass(Address Value,
+                                const CXXRecordDecl *Derived,
+                                CastExpr::path_const_iterator PathBegin,
+                                CastExpr::path_const_iterator PathEnd,
+                                bool NullCheckValue, SourceLocation Loc);
+
+  Address GetAddressOfDerivedClass(Address Value,
+                                   const CXXRecordDecl *Derived,
+                                   CastExpr::path_const_iterator PathBegin,
+                                   CastExpr::path_const_iterator PathEnd,
+                                   bool NullCheckValue);
+
+  /// GetVTTParameter - Return the VTT parameter that should be passed to a
+  /// base constructor/destructor with virtual bases.
+  /// FIXME: VTTs are Itanium ABI-specific, so the definition should move
+  /// to ItaniumCXXABI.cpp together with all the references to VTT.
+  llvm::Value *GetVTTParameter(GlobalDecl GD, bool ForVirtualBase,
+                               bool Delegating);
+
+  void EmitDelegateCXXConstructorCall(const CXXConstructorDecl *Ctor,
+                                      CXXCtorType CtorType,
+                                      const FunctionArgList &Args,
+                                      SourceLocation Loc);
+  // It's important not to confuse this and the previous function. Delegating
+  // constructors are the C++0x feature. The constructor delegate optimization
+  // is used to reduce duplication in the base and complete consturctors where
+  // they are substantially the same.
+  void EmitDelegatingCXXConstructorCall(const CXXConstructorDecl *Ctor,
+                                        const FunctionArgList &Args);
+
+  /// Emit a call to an inheriting constructor (that is, one that invokes a
+  /// constructor inherited from a base class) by inlining its definition. This
+  /// is necessary if the ABI does not support forwarding the arguments to the
+  /// base class constructor (because they're variadic or similar).
+  void EmitInlinedInheritingCXXConstructorCall(const CXXConstructorDecl *Ctor,
+                                               CXXCtorType CtorType,
+                                               bool ForVirtualBase,
+                                               bool Delegating,
+                                               CallArgList &Args);
+
+  /// Emit a call to a constructor inherited from a base class, passing the
+  /// current constructor's arguments along unmodified (without even making
+  /// a copy).
+  void EmitInheritedCXXConstructorCall(const CXXConstructorDecl *D,
+                                       bool ForVirtualBase, Address This,
+                                       bool InheritedFromVBase,
+                                       const CXXInheritedCtorInitExpr *E);
+
+  void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type,
+                              bool ForVirtualBase, bool Delegating,
+                              AggValueSlot ThisAVS, const CXXConstructExpr *E);
+
+  void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type,
+                              bool ForVirtualBase, bool Delegating,
+                              Address This, CallArgList &Args,
+                              AggValueSlot::Overlap_t Overlap,
+                              SourceLocation Loc, bool NewPointerIsChecked);
+
+  /// Emit assumption load for all bases. Requires to be be called only on
+  /// most-derived class and not under construction of the object.
+  void EmitVTableAssumptionLoads(const CXXRecordDecl *ClassDecl, Address This);
+
+  /// Emit assumption that vptr load == global vtable.
+  void EmitVTableAssumptionLoad(const VPtr &vptr, Address This);
+
+  void EmitSynthesizedCXXCopyCtorCall(const CXXConstructorDecl *D,
+                                      Address This, Address Src,
+                                      const CXXConstructExpr *E);
+
+  void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D,
+                                  const ArrayType *ArrayTy,
+                                  Address ArrayPtr,
+                                  const CXXConstructExpr *E,
+                                  bool NewPointerIsChecked,
+                                  bool ZeroInitialization = false);
+
+  void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D,
+                                  llvm::Value *NumElements,
+                                  Address ArrayPtr,
+                                  const CXXConstructExpr *E,
+                                  bool NewPointerIsChecked,
+                                  bool ZeroInitialization = false);
+
+  static Destroyer destroyCXXObject;
+
+  void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type,
+                             bool ForVirtualBase, bool Delegating, Address This,
+                             QualType ThisTy);
+
+  void EmitNewArrayInitializer(const CXXNewExpr *E, QualType elementType,
+                               llvm::Type *ElementTy, Address NewPtr,
+                               llvm::Value *NumElements,
+                               llvm::Value *AllocSizeWithoutCookie);
+
+  void EmitCXXTemporary(const CXXTemporary *Temporary, QualType TempType,
+                        Address Ptr);
+
+  llvm::Value *EmitLifetimeStart(uint64_t Size, llvm::Value *Addr);
+  void EmitLifetimeEnd(llvm::Value *Size, llvm::Value *Addr);
+
+  llvm::Value *EmitCXXNewExpr(const CXXNewExpr *E);
+  void EmitCXXDeleteExpr(const CXXDeleteExpr *E);
+
+  void EmitDeleteCall(const FunctionDecl *DeleteFD, llvm::Value *Ptr,
+                      QualType DeleteTy, llvm::Value *NumElements = nullptr,
+                      CharUnits CookieSize = CharUnits());
+
+  RValue EmitBuiltinNewDeleteCall(const FunctionProtoType *Type,
+                                  const CallExpr *TheCallExpr, bool IsDelete);
+
+  llvm::Value *EmitCXXTypeidExpr(const CXXTypeidExpr *E);
+  llvm::Value *EmitDynamicCast(Address V, const CXXDynamicCastExpr *DCE);
+  Address EmitCXXUuidofExpr(const CXXUuidofExpr *E);
+
+  /// Situations in which we might emit a check for the suitability of a
+  ///        pointer or glvalue.
+  enum TypeCheckKind {
+    /// Checking the operand of a load. Must be suitably sized and aligned.
+    TCK_Load,
+    /// Checking the destination of a store. Must be suitably sized and aligned.
+    TCK_Store,
+    /// Checking the bound value in a reference binding. Must be suitably sized
+    /// and aligned, but is not required to refer to an object (until the
+    /// reference is used), per core issue 453.
+    TCK_ReferenceBinding,
+    /// Checking the object expression in a non-static data member access. Must
+    /// be an object within its lifetime.
+    TCK_MemberAccess,
+    /// Checking the 'this' pointer for a call to a non-static member function.
+    /// Must be an object within its lifetime.
+    TCK_MemberCall,
+    /// Checking the 'this' pointer for a constructor call.
+    TCK_ConstructorCall,
+    /// Checking the operand of a static_cast to a derived pointer type. Must be
+    /// null or an object within its lifetime.
+    TCK_DowncastPointer,
+    /// Checking the operand of a static_cast to a derived reference type. Must
+    /// be an object within its lifetime.
+    TCK_DowncastReference,
+    /// Checking the operand of a cast to a base object. Must be suitably sized
+    /// and aligned.
+    TCK_Upcast,
+    /// Checking the operand of a cast to a virtual base object. Must be an
+    /// object within its lifetime.
+    TCK_UpcastToVirtualBase,
+    /// Checking the value assigned to a _Nonnull pointer. Must not be null.
+    TCK_NonnullAssign,
+    /// Checking the operand of a dynamic_cast or a typeid expression.  Must be
+    /// null or an object within its lifetime.
+    TCK_DynamicOperation
+  };
+
+  /// Determine whether the pointer type check \p TCK permits null pointers.
+  static bool isNullPointerAllowed(TypeCheckKind TCK);
+
+  /// Determine whether the pointer type check \p TCK requires a vptr check.
+  static bool isVptrCheckRequired(TypeCheckKind TCK, QualType Ty);
+
+  /// Whether any type-checking sanitizers are enabled. If \c false,
+  /// calls to EmitTypeCheck can be skipped.
+  bool sanitizePerformTypeCheck() const;
+
+  /// Emit a check that \p V is the address of storage of the
+  /// appropriate size and alignment for an object of type \p Type
+  /// (or if ArraySize is provided, for an array of that bound).
+  void EmitTypeCheck(TypeCheckKind TCK, SourceLocation Loc, llvm::Value *V,
+                     QualType Type, CharUnits Alignment = CharUnits::Zero(),
+                     SanitizerSet SkippedChecks = SanitizerSet(),
+                     llvm::Value *ArraySize = nullptr);
+
+  /// Emit a check that \p Base points into an array object, which
+  /// we can access at index \p Index. \p Accessed should be \c false if we
+  /// this expression is used as an lvalue, for instance in "&Arr[Idx]".
+  void EmitBoundsCheck(const Expr *E, const Expr *Base, llvm::Value *Index,
+                       QualType IndexType, bool Accessed);
+
+  llvm::Value *EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV,
+                                       bool isInc, bool isPre);
+  ComplexPairTy EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV,
+                                         bool isInc, bool isPre);
+
+  /// Converts Location to a DebugLoc, if debug information is enabled.
+  llvm::DebugLoc SourceLocToDebugLoc(SourceLocation Location);
+
+  /// Get the record field index as represented in debug info.
+  unsigned getDebugInfoFIndex(const RecordDecl *Rec, unsigned FieldIndex);
+
+
+  //===--------------------------------------------------------------------===//
+  //                            Declaration Emission
+  //===--------------------------------------------------------------------===//
+
+  /// EmitDecl - Emit a declaration.
+  ///
+  /// This function can be called with a null (unreachable) insert point.
+  void EmitDecl(const Decl &D);
+
+  /// EmitVarDecl - Emit a local variable declaration.
+  ///
+  /// This function can be called with a null (unreachable) insert point.
+  void EmitVarDecl(const VarDecl &D);
+
+  void EmitScalarInit(const Expr *init, const ValueDecl *D, LValue lvalue,
+                      bool capturedByInit);
+
+  typedef void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D,
+                             llvm::Value *Address);
+
+  /// Determine whether the given initializer is trivial in the sense
+  /// that it requires no code to be generated.
+  bool isTrivialInitializer(const Expr *Init);
+
+  /// EmitAutoVarDecl - Emit an auto variable declaration.
+  ///
+  /// This function can be called with a null (unreachable) insert point.
+  void EmitAutoVarDecl(const VarDecl &D);
+
+  class AutoVarEmission {
+    friend class CodeGenFunction;
+
+    const VarDecl *Variable;
+
+    /// The address of the alloca for languages with explicit address space
+    /// (e.g. OpenCL) or alloca casted to generic pointer for address space
+    /// agnostic languages (e.g. C++). Invalid if the variable was emitted
+    /// as a global constant.
+    Address Addr;
+
+    llvm::Value *NRVOFlag;
+
+    /// True if the variable is a __block variable that is captured by an
+    /// escaping block.
+    bool IsEscapingByRef;
+
+    /// True if the variable is of aggregate type and has a constant
+    /// initializer.
+    bool IsConstantAggregate;
+
+    /// Non-null if we should use lifetime annotations.
+    llvm::Value *SizeForLifetimeMarkers;
+
+    /// Address with original alloca instruction. Invalid if the variable was
+    /// emitted as a global constant.
+    Address AllocaAddr;
+
+    struct Invalid {};
+    AutoVarEmission(Invalid)
+        : Variable(nullptr), Addr(Address::invalid()),
+          AllocaAddr(Address::invalid()) {}
+
+    AutoVarEmission(const VarDecl &variable)
+        : Variable(&variable), Addr(Address::invalid()), NRVOFlag(nullptr),
+          IsEscapingByRef(false), IsConstantAggregate(false),
+          SizeForLifetimeMarkers(nullptr), AllocaAddr(Address::invalid()) {}
+
+    bool wasEmittedAsGlobal() const { return !Addr.isValid(); }
+
+  public:
+    static AutoVarEmission invalid() { return AutoVarEmission(Invalid()); }
+
+    bool useLifetimeMarkers() const {
+      return SizeForLifetimeMarkers != nullptr;
+    }
+    llvm::Value *getSizeForLifetimeMarkers() const {
+      assert(useLifetimeMarkers());
+      return SizeForLifetimeMarkers;
+    }
+
+    /// Returns the raw, allocated address, which is not necessarily
+    /// the address of the object itself. It is casted to default
+    /// address space for address space agnostic languages.
+    Address getAllocatedAddress() const {
+      return Addr;
+    }
+
+    /// Returns the address for the original alloca instruction.
+    Address getOriginalAllocatedAddress() const { return AllocaAddr; }
+
+    /// Returns the address of the object within this declaration.
+    /// Note that this does not chase the forwarding pointer for
+    /// __block decls.
+    Address getObjectAddress(CodeGenFunction &CGF) const {
+      if (!IsEscapingByRef) return Addr;
+
+      return CGF.emitBlockByrefAddress(Addr, Variable, /*forward*/ false);
+    }
+  };
+  AutoVarEmission EmitAutoVarAlloca(const VarDecl &var);
+  void EmitAutoVarInit(const AutoVarEmission &emission);
+  void EmitAutoVarCleanups(const AutoVarEmission &emission);
+  void emitAutoVarTypeCleanup(const AutoVarEmission &emission,
+                              QualType::DestructionKind dtorKind);
+
+  /// Emits the alloca and debug information for the size expressions for each
+  /// dimension of an array. It registers the association of its (1-dimensional)
+  /// QualTypes and size expression's debug node, so that CGDebugInfo can
+  /// reference this node when creating the DISubrange object to describe the
+  /// array types.
+  void EmitAndRegisterVariableArrayDimensions(CGDebugInfo *DI,
+                                              const VarDecl &D,
+                                              bool EmitDebugInfo);
+
+  void EmitStaticVarDecl(const VarDecl &D,
+                         llvm::GlobalValue::LinkageTypes Linkage);
+
+  class ParamValue {
+    llvm::Value *Value;
+    unsigned Alignment;
+    ParamValue(llvm::Value *V, unsigned A) : Value(V), Alignment(A) {}
+  public:
+    static ParamValue forDirect(llvm::Value *value) {
+      return ParamValue(value, 0);
+    }
+    static ParamValue forIndirect(Address addr) {
+      assert(!addr.getAlignment().isZero());
+      return ParamValue(addr.getPointer(), addr.getAlignment().getQuantity());
+    }
+
+    bool isIndirect() const { return Alignment != 0; }
+    llvm::Value *getAnyValue() const { return Value; }
+
+    llvm::Value *getDirectValue() const {
+      assert(!isIndirect());
+      return Value;
+    }
+
+    Address getIndirectAddress() const {
+      assert(isIndirect());
+      return Address(Value, CharUnits::fromQuantity(Alignment));
+    }
+  };
+
+  /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl.
+  void EmitParmDecl(const VarDecl &D, ParamValue Arg, unsigned ArgNo);
+
+  /// protectFromPeepholes - Protect a value that we're intending to
+  /// store to the side, but which will probably be used later, from
+  /// aggressive peepholing optimizations that might delete it.
+  ///
+  /// Pass the result to unprotectFromPeepholes to declare that
+  /// protection is no longer required.
+  ///
+  /// There's no particular reason why this shouldn't apply to
+  /// l-values, it's just that no existing peepholes work on pointers.
+  PeepholeProtection protectFromPeepholes(RValue rvalue);
+  void unprotectFromPeepholes(PeepholeProtection protection);
+
+  void EmitAlignmentAssumptionCheck(llvm::Value *Ptr, QualType Ty,
+                                    SourceLocation Loc,
+                                    SourceLocation AssumptionLoc,
+                                    llvm::Value *Alignment,
+                                    llvm::Value *OffsetValue,
+                                    llvm::Value *TheCheck,
+                                    llvm::Instruction *Assumption);
+
+  void EmitAlignmentAssumption(llvm::Value *PtrValue, QualType Ty,
+                               SourceLocation Loc, SourceLocation AssumptionLoc,
+                               llvm::Value *Alignment,
+                               llvm::Value *OffsetValue = nullptr);
+
+  void EmitAlignmentAssumption(llvm::Value *PtrValue, const Expr *E,
+                               SourceLocation AssumptionLoc, llvm::Value *Alignment,
+                               llvm::Value *OffsetValue = nullptr);
+
+  //===--------------------------------------------------------------------===//
+  //                             Statement Emission
+  //===--------------------------------------------------------------------===//
+
+  /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info.
+  void EmitStopPoint(const Stmt *S);
+
+  /// EmitStmt - Emit the code for the statement \arg S. It is legal to call
+  /// this function even if there is no current insertion point.
+  ///
+  /// This function may clear the current insertion point; callers should use
+  /// EnsureInsertPoint if they wish to subsequently generate code without first
+  /// calling EmitBlock, EmitBranch, or EmitStmt.
+  void EmitStmt(const Stmt *S, ArrayRef<const Attr *> Attrs = None);
+
+  /// EmitSimpleStmt - Try to emit a "simple" statement which does not
+  /// necessarily require an insertion point or debug information; typically
+  /// because the statement amounts to a jump or a container of other
+  /// statements.
+  ///
+  /// \return True if the statement was handled.
+  bool EmitSimpleStmt(const Stmt *S);
+
+  Address EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false,
+                           AggValueSlot AVS = AggValueSlot::ignored());
+  Address EmitCompoundStmtWithoutScope(const CompoundStmt &S,
+                                       bool GetLast = false,
+                                       AggValueSlot AVS =
+                                                AggValueSlot::ignored());
+
+  /// EmitLabel - Emit the block for the given label. It is legal to call this
+  /// function even if there is no current insertion point.
+  void EmitLabel(const LabelDecl *D); // helper for EmitLabelStmt.
+
+  void EmitLabelStmt(const LabelStmt &S);
+  void EmitAttributedStmt(const AttributedStmt &S);
+  void EmitGotoStmt(const GotoStmt &S);
+  void EmitIndirectGotoStmt(const IndirectGotoStmt &S);
+  void EmitIfStmt(const IfStmt &S);
+
+  void EmitWhileStmt(const WhileStmt &S,
+                     ArrayRef<const Attr *> Attrs = None);
+  void EmitDoStmt(const DoStmt &S, ArrayRef<const Attr *> Attrs = None);
+  void EmitForStmt(const ForStmt &S,
+                   ArrayRef<const Attr *> Attrs = None);
+  void EmitReturnStmt(const ReturnStmt &S);
+  void EmitDeclStmt(const DeclStmt &S);
+  void EmitBreakStmt(const BreakStmt &S);
+  void EmitContinueStmt(const ContinueStmt &S);
+  void EmitSwitchStmt(const SwitchStmt &S);
+  void EmitDefaultStmt(const DefaultStmt &S);
+  void EmitCaseStmt(const CaseStmt &S);
+  void EmitCaseStmtRange(const CaseStmt &S);
+  void EmitAsmStmt(const AsmStmt &S);
+
+  void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S);
+  void EmitObjCAtTryStmt(const ObjCAtTryStmt &S);
+  void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S);
+  void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S);
+  void EmitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt &S);
+
+  void EmitCoroutineBody(const CoroutineBodyStmt &S);
+  void EmitCoreturnStmt(const CoreturnStmt &S);
+  RValue EmitCoawaitExpr(const CoawaitExpr &E,
+                         AggValueSlot aggSlot = AggValueSlot::ignored(),
+                         bool ignoreResult = false);
+  LValue EmitCoawaitLValue(const CoawaitExpr *E);
+  RValue EmitCoyieldExpr(const CoyieldExpr &E,
+                         AggValueSlot aggSlot = AggValueSlot::ignored(),
+                         bool ignoreResult = false);
+  LValue EmitCoyieldLValue(const CoyieldExpr *E);
+  RValue EmitCoroutineIntrinsic(const CallExpr *E, unsigned int IID);
+
+  void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false);
+  void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false);
+
+  void EmitCXXTryStmt(const CXXTryStmt &S);
+  void EmitSEHTryStmt(const SEHTryStmt &S);
+  void EmitSEHLeaveStmt(const SEHLeaveStmt &S);
+  void EnterSEHTryStmt(const SEHTryStmt &S);
+  void ExitSEHTryStmt(const SEHTryStmt &S);
+
+  void pushSEHCleanup(CleanupKind kind,
+                      llvm::Function *FinallyFunc);
+  void startOutlinedSEHHelper(CodeGenFunction &ParentCGF, bool IsFilter,
+                              const Stmt *OutlinedStmt);
+
+  llvm::Function *GenerateSEHFilterFunction(CodeGenFunction &ParentCGF,
+                                            const SEHExceptStmt &Except);
+
+  llvm::Function *GenerateSEHFinallyFunction(CodeGenFunction &ParentCGF,
+                                             const SEHFinallyStmt &Finally);
+
+  void EmitSEHExceptionCodeSave(CodeGenFunction &ParentCGF,
+                                llvm::Value *ParentFP,
+                                llvm::Value *EntryEBP);
+  llvm::Value *EmitSEHExceptionCode();
+  llvm::Value *EmitSEHExceptionInfo();
+  llvm::Value *EmitSEHAbnormalTermination();
+
+  /// Emit simple code for OpenMP directives in Simd-only mode.
+  void EmitSimpleOMPExecutableDirective(const OMPExecutableDirective &D);
+
+  /// Scan the outlined statement for captures from the parent function. For
+  /// each capture, mark the capture as escaped and emit a call to
+  /// llvm.localrecover. Insert the localrecover result into the LocalDeclMap.
+  void EmitCapturedLocals(CodeGenFunction &ParentCGF, const Stmt *OutlinedStmt,
+                          bool IsFilter);
+
+  /// Recovers the address of a local in a parent function. ParentVar is the
+  /// address of the variable used in the immediate parent function. It can
+  /// either be an alloca or a call to llvm.localrecover if there are nested
+  /// outlined functions. ParentFP is the frame pointer of the outermost parent
+  /// frame.
+  Address recoverAddrOfEscapedLocal(CodeGenFunction &ParentCGF,
+                                    Address ParentVar,
+                                    llvm::Value *ParentFP);
+
+  void EmitCXXForRangeStmt(const CXXForRangeStmt &S,
+                           ArrayRef<const Attr *> Attrs = None);
+
+  /// Controls insertion of cancellation exit blocks in worksharing constructs.
+  class OMPCancelStackRAII {
+    CodeGenFunction &CGF;
+
+  public:
+    OMPCancelStackRAII(CodeGenFunction &CGF, OpenMPDirectiveKind Kind,
+                       bool HasCancel)
+        : CGF(CGF) {
+      CGF.OMPCancelStack.enter(CGF, Kind, HasCancel);
+    }
+    ~OMPCancelStackRAII() { CGF.OMPCancelStack.exit(CGF); }
+  };
+
+  /// Returns calculated size of the specified type.
+  llvm::Value *getTypeSize(QualType Ty);
+  LValue InitCapturedStruct(const CapturedStmt &S);
+  llvm::Function *EmitCapturedStmt(const CapturedStmt &S, CapturedRegionKind K);
+  llvm::Function *GenerateCapturedStmtFunction(const CapturedStmt &S);
+  Address GenerateCapturedStmtArgument(const CapturedStmt &S);
+  llvm::Function *GenerateOpenMPCapturedStmtFunction(const CapturedStmt &S);
+  void GenerateOpenMPCapturedVars(const CapturedStmt &S,
+                                  SmallVectorImpl<llvm::Value *> &CapturedVars);
+  void emitOMPSimpleStore(LValue LVal, RValue RVal, QualType RValTy,
+                          SourceLocation Loc);
+  /// Perform element by element copying of arrays with type \a
+  /// OriginalType from \a SrcAddr to \a DestAddr using copying procedure
+  /// generated by \a CopyGen.
+  ///
+  /// \param DestAddr Address of the destination array.
+  /// \param SrcAddr Address of the source array.
+  /// \param OriginalType Type of destination and source arrays.
+  /// \param CopyGen Copying procedure that copies value of single array element
+  /// to another single array element.
+  void EmitOMPAggregateAssign(
+      Address DestAddr, Address SrcAddr, QualType OriginalType,
+      const llvm::function_ref<void(Address, Address)> CopyGen);
+  /// Emit proper copying of data from one variable to another.
+  ///
+  /// \param OriginalType Original type of the copied variables.
+  /// \param DestAddr Destination address.
+  /// \param SrcAddr Source address.
+  /// \param DestVD Destination variable used in \a CopyExpr (for arrays, has
+  /// type of the base array element).
+  /// \param SrcVD Source variable used in \a CopyExpr (for arrays, has type of
+  /// the base array element).
+  /// \param Copy Actual copygin expression for copying data from \a SrcVD to \a
+  /// DestVD.
+  void EmitOMPCopy(QualType OriginalType,
+                   Address DestAddr, Address SrcAddr,
+                   const VarDecl *DestVD, const VarDecl *SrcVD,
+                   const Expr *Copy);
+  /// Emit atomic update code for constructs: \a X = \a X \a BO \a E or
+  /// \a X = \a E \a BO \a E.
+  ///
+  /// \param X Value to be updated.
+  /// \param E Update value.
+  /// \param BO Binary operation for update operation.
+  /// \param IsXLHSInRHSPart true if \a X is LHS in RHS part of the update
+  /// expression, false otherwise.
+  /// \param AO Atomic ordering of the generated atomic instructions.
+  /// \param CommonGen Code generator for complex expressions that cannot be
+  /// expressed through atomicrmw instruction.
+  /// \returns <true, OldAtomicValue> if simple 'atomicrmw' instruction was
+  /// generated, <false, RValue::get(nullptr)> otherwise.
+  std::pair<bool, RValue> EmitOMPAtomicSimpleUpdateExpr(
+      LValue X, RValue E, BinaryOperatorKind BO, bool IsXLHSInRHSPart,
+      llvm::AtomicOrdering AO, SourceLocation Loc,
+      const llvm::function_ref<RValue(RValue)> CommonGen);
+  bool EmitOMPFirstprivateClause(const OMPExecutableDirective &D,
+                                 OMPPrivateScope &PrivateScope);
+  void EmitOMPPrivateClause(const OMPExecutableDirective &D,
+                            OMPPrivateScope &PrivateScope);
+  void EmitOMPUseDevicePtrClause(
+      const OMPClause &C, OMPPrivateScope &PrivateScope,
+      const llvm::DenseMap<const ValueDecl *, Address> &CaptureDeviceAddrMap);
+  /// Emit code for copyin clause in \a D directive. The next code is
+  /// generated at the start of outlined functions for directives:
+  /// \code
+  /// threadprivate_var1 = master_threadprivate_var1;
+  /// operator=(threadprivate_var2, master_threadprivate_var2);
+  /// ...
+  /// __kmpc_barrier(&loc, global_tid);
+  /// \endcode
+  ///
+  /// \param D OpenMP directive possibly with 'copyin' clause(s).
+  /// \returns true if at least one copyin variable is found, false otherwise.
+  bool EmitOMPCopyinClause(const OMPExecutableDirective &D);
+  /// Emit initial code for lastprivate variables. If some variable is
+  /// not also firstprivate, then the default initialization is used. Otherwise
+  /// initialization of this variable is performed by EmitOMPFirstprivateClause
+  /// method.
+  ///
+  /// \param D Directive that may have 'lastprivate' directives.
+  /// \param PrivateScope Private scope for capturing lastprivate variables for
+  /// proper codegen in internal captured statement.
+  ///
+  /// \returns true if there is at least one lastprivate variable, false
+  /// otherwise.
+  bool EmitOMPLastprivateClauseInit(const OMPExecutableDirective &D,
+                                    OMPPrivateScope &PrivateScope);
+  /// Emit final copying of lastprivate values to original variables at
+  /// the end of the worksharing or simd directive.
+  ///
+  /// \param D Directive that has at least one 'lastprivate' directives.
+  /// \param IsLastIterCond Boolean condition that must be set to 'i1 true' if
+  /// it is the last iteration of the loop code in associated directive, or to
+  /// 'i1 false' otherwise. If this item is nullptr, no final check is required.
+  void EmitOMPLastprivateClauseFinal(const OMPExecutableDirective &D,
+                                     bool NoFinals,
+                                     llvm::Value *IsLastIterCond = nullptr);
+  /// Emit initial code for linear clauses.
+  void EmitOMPLinearClause(const OMPLoopDirective &D,
+                           CodeGenFunction::OMPPrivateScope &PrivateScope);
+  /// Emit final code for linear clauses.
+  /// \param CondGen Optional conditional code for final part of codegen for
+  /// linear clause.
+  void EmitOMPLinearClauseFinal(
+      const OMPLoopDirective &D,
+      const llvm::function_ref<llvm::Value *(CodeGenFunction &)> CondGen);
+  /// Emit initial code for reduction variables. Creates reduction copies
+  /// and initializes them with the values according to OpenMP standard.
+  ///
+  /// \param D Directive (possibly) with the 'reduction' clause.
+  /// \param PrivateScope Private scope for capturing reduction variables for
+  /// proper codegen in internal captured statement.
+  ///
+  void EmitOMPReductionClauseInit(const OMPExecutableDirective &D,
+                                  OMPPrivateScope &PrivateScope);
+  /// Emit final update of reduction values to original variables at
+  /// the end of the directive.
+  ///
+  /// \param D Directive that has at least one 'reduction' directives.
+  /// \param ReductionKind The kind of reduction to perform.
+  void EmitOMPReductionClauseFinal(const OMPExecutableDirective &D,
+                                   const OpenMPDirectiveKind ReductionKind);
+  /// Emit initial code for linear variables. Creates private copies
+  /// and initializes them with the values according to OpenMP standard.
+  ///
+  /// \param D Directive (possibly) with the 'linear' clause.
+  /// \return true if at least one linear variable is found that should be
+  /// initialized with the value of the original variable, false otherwise.
+  bool EmitOMPLinearClauseInit(const OMPLoopDirective &D);
+
+  typedef const llvm::function_ref<void(CodeGenFunction & /*CGF*/,
+                                        llvm::Function * /*OutlinedFn*/,
+                                        const OMPTaskDataTy & /*Data*/)>
+      TaskGenTy;
+  void EmitOMPTaskBasedDirective(const OMPExecutableDirective &S,
+                                 const OpenMPDirectiveKind CapturedRegion,
+                                 const RegionCodeGenTy &BodyGen,
+                                 const TaskGenTy &TaskGen, OMPTaskDataTy &Data);
+  struct OMPTargetDataInfo {
+    Address BasePointersArray = Address::invalid();
+    Address PointersArray = Address::invalid();
+    Address SizesArray = Address::invalid();
+    unsigned NumberOfTargetItems = 0;
+    explicit OMPTargetDataInfo() = default;
+    OMPTargetDataInfo(Address BasePointersArray, Address PointersArray,
+                      Address SizesArray, unsigned NumberOfTargetItems)
+        : BasePointersArray(BasePointersArray), PointersArray(PointersArray),
+          SizesArray(SizesArray), NumberOfTargetItems(NumberOfTargetItems) {}
+  };
+  void EmitOMPTargetTaskBasedDirective(const OMPExecutableDirective &S,
+                                       const RegionCodeGenTy &BodyGen,
+                                       OMPTargetDataInfo &InputInfo);
+
+  void EmitOMPParallelDirective(const OMPParallelDirective &S);
+  void EmitOMPSimdDirective(const OMPSimdDirective &S);
+  void EmitOMPForDirective(const OMPForDirective &S);
+  void EmitOMPForSimdDirective(const OMPForSimdDirective &S);
+  void EmitOMPSectionsDirective(const OMPSectionsDirective &S);
+  void EmitOMPSectionDirective(const OMPSectionDirective &S);
+  void EmitOMPSingleDirective(const OMPSingleDirective &S);
+  void EmitOMPMasterDirective(const OMPMasterDirective &S);
+  void EmitOMPCriticalDirective(const OMPCriticalDirective &S);
+  void EmitOMPParallelForDirective(const OMPParallelForDirective &S);
+  void EmitOMPParallelForSimdDirective(const OMPParallelForSimdDirective &S);
+  void EmitOMPParallelSectionsDirective(const OMPParallelSectionsDirective &S);
+  void EmitOMPParallelMasterDirective(const OMPParallelMasterDirective &S);
+  void EmitOMPTaskDirective(const OMPTaskDirective &S);
+  void EmitOMPTaskyieldDirective(const OMPTaskyieldDirective &S);
+  void EmitOMPBarrierDirective(const OMPBarrierDirective &S);
+  void EmitOMPTaskwaitDirective(const OMPTaskwaitDirective &S);
+  void EmitOMPTaskgroupDirective(const OMPTaskgroupDirective &S);
+  void EmitOMPFlushDirective(const OMPFlushDirective &S);
+  void EmitOMPOrderedDirective(const OMPOrderedDirective &S);
+  void EmitOMPAtomicDirective(const OMPAtomicDirective &S);
+  void EmitOMPTargetDirective(const OMPTargetDirective &S);
+  void EmitOMPTargetDataDirective(const OMPTargetDataDirective &S);
+  void EmitOMPTargetEnterDataDirective(const OMPTargetEnterDataDirective &S);
+  void EmitOMPTargetExitDataDirective(const OMPTargetExitDataDirective &S);
+  void EmitOMPTargetUpdateDirective(const OMPTargetUpdateDirective &S);
+  void EmitOMPTargetParallelDirective(const OMPTargetParallelDirective &S);
+  void
+  EmitOMPTargetParallelForDirective(const OMPTargetParallelForDirective &S);
+  void EmitOMPTeamsDirective(const OMPTeamsDirective &S);
+  void
+  EmitOMPCancellationPointDirective(const OMPCancellationPointDirective &S);
+  void EmitOMPCancelDirective(const OMPCancelDirective &S);
+  void EmitOMPTaskLoopBasedDirective(const OMPLoopDirective &S);
+  void EmitOMPTaskLoopDirective(const OMPTaskLoopDirective &S);
+  void EmitOMPTaskLoopSimdDirective(const OMPTaskLoopSimdDirective &S);
+  void EmitOMPMasterTaskLoopDirective(const OMPMasterTaskLoopDirective &S);
+  void
+  EmitOMPMasterTaskLoopSimdDirective(const OMPMasterTaskLoopSimdDirective &S);
+  void EmitOMPParallelMasterTaskLoopDirective(
+      const OMPParallelMasterTaskLoopDirective &S);
+  void EmitOMPParallelMasterTaskLoopSimdDirective(
+      const OMPParallelMasterTaskLoopSimdDirective &S);
+  void EmitOMPDistributeDirective(const OMPDistributeDirective &S);
+  void EmitOMPDistributeParallelForDirective(
+      const OMPDistributeParallelForDirective &S);
+  void EmitOMPDistributeParallelForSimdDirective(
+      const OMPDistributeParallelForSimdDirective &S);
+  void EmitOMPDistributeSimdDirective(const OMPDistributeSimdDirective &S);
+  void EmitOMPTargetParallelForSimdDirective(
+      const OMPTargetParallelForSimdDirective &S);
+  void EmitOMPTargetSimdDirective(const OMPTargetSimdDirective &S);
+  void EmitOMPTeamsDistributeDirective(const OMPTeamsDistributeDirective &S);
+  void
+  EmitOMPTeamsDistributeSimdDirective(const OMPTeamsDistributeSimdDirective &S);
+  void EmitOMPTeamsDistributeParallelForSimdDirective(
+      const OMPTeamsDistributeParallelForSimdDirective &S);
+  void EmitOMPTeamsDistributeParallelForDirective(
+      const OMPTeamsDistributeParallelForDirective &S);
+  void EmitOMPTargetTeamsDirective(const OMPTargetTeamsDirective &S);
+  void EmitOMPTargetTeamsDistributeDirective(
+      const OMPTargetTeamsDistributeDirective &S);
+  void EmitOMPTargetTeamsDistributeParallelForDirective(
+      const OMPTargetTeamsDistributeParallelForDirective &S);
+  void EmitOMPTargetTeamsDistributeParallelForSimdDirective(
+      const OMPTargetTeamsDistributeParallelForSimdDirective &S);
+  void EmitOMPTargetTeamsDistributeSimdDirective(
+      const OMPTargetTeamsDistributeSimdDirective &S);
+
+  /// Emit device code for the target directive.
+  static void EmitOMPTargetDeviceFunction(CodeGenModule &CGM,
+                                          StringRef ParentName,
+                                          const OMPTargetDirective &S);
+  static void
+  EmitOMPTargetParallelDeviceFunction(CodeGenModule &CGM, StringRef ParentName,
+                                      const OMPTargetParallelDirective &S);
+  /// Emit device code for the target parallel for directive.
+  static void EmitOMPTargetParallelForDeviceFunction(
+      CodeGenModule &CGM, StringRef ParentName,
+      const OMPTargetParallelForDirective &S);
+  /// Emit device code for the target parallel for simd directive.
+  static void EmitOMPTargetParallelForSimdDeviceFunction(
+      CodeGenModule &CGM, StringRef ParentName,
+      const OMPTargetParallelForSimdDirective &S);
+  /// Emit device code for the target teams directive.
+  static void
+  EmitOMPTargetTeamsDeviceFunction(CodeGenModule &CGM, StringRef ParentName,
+                                   const OMPTargetTeamsDirective &S);
+  /// Emit device code for the target teams distribute directive.
+  static void EmitOMPTargetTeamsDistributeDeviceFunction(
+      CodeGenModule &CGM, StringRef ParentName,
+      const OMPTargetTeamsDistributeDirective &S);
+  /// Emit device code for the target teams distribute simd directive.
+  static void EmitOMPTargetTeamsDistributeSimdDeviceFunction(
+      CodeGenModule &CGM, StringRef ParentName,
+      const OMPTargetTeamsDistributeSimdDirective &S);
+  /// Emit device code for the target simd directive.
+  static void EmitOMPTargetSimdDeviceFunction(CodeGenModule &CGM,
+                                              StringRef ParentName,
+                                              const OMPTargetSimdDirective &S);
+  /// Emit device code for the target teams distribute parallel for simd
+  /// directive.
+  static void EmitOMPTargetTeamsDistributeParallelForSimdDeviceFunction(
+      CodeGenModule &CGM, StringRef ParentName,
+      const OMPTargetTeamsDistributeParallelForSimdDirective &S);
+
+  static void EmitOMPTargetTeamsDistributeParallelForDeviceFunction(
+      CodeGenModule &CGM, StringRef ParentName,
+      const OMPTargetTeamsDistributeParallelForDirective &S);
+  /// Emit inner loop of the worksharing/simd construct.
+  ///
+  /// \param S Directive, for which the inner loop must be emitted.
+  /// \param RequiresCleanup true, if directive has some associated private
+  /// variables.
+  /// \param LoopCond Bollean condition for loop continuation.
+  /// \param IncExpr Increment expression for loop control variable.
+  /// \param BodyGen Generator for the inner body of the inner loop.
+  /// \param PostIncGen Genrator for post-increment code (required for ordered
+  /// loop directvies).
+  void EmitOMPInnerLoop(
+      const Stmt &S, bool RequiresCleanup, const Expr *LoopCond,
+      const Expr *IncExpr,
+      const llvm::function_ref<void(CodeGenFunction &)> BodyGen,
+      const llvm::function_ref<void(CodeGenFunction &)> PostIncGen);
+
+  JumpDest getOMPCancelDestination(OpenMPDirectiveKind Kind);
+  /// Emit initial code for loop counters of loop-based directives.
+  void EmitOMPPrivateLoopCounters(const OMPLoopDirective &S,
+                                  OMPPrivateScope &LoopScope);
+
+  /// Helper for the OpenMP loop directives.
+  void EmitOMPLoopBody(const OMPLoopDirective &D, JumpDest LoopExit);
+
+  /// Emit code for the worksharing loop-based directive.
+  /// \return true, if this construct has any lastprivate clause, false -
+  /// otherwise.
+  bool EmitOMPWorksharingLoop(const OMPLoopDirective &S, Expr *EUB,
+                              const CodeGenLoopBoundsTy &CodeGenLoopBounds,
+                              const CodeGenDispatchBoundsTy &CGDispatchBounds);
+
+  /// Emit code for the distribute loop-based directive.
+  void EmitOMPDistributeLoop(const OMPLoopDirective &S,
+                             const CodeGenLoopTy &CodeGenLoop, Expr *IncExpr);
+
+  /// Helpers for the OpenMP loop directives.
+  void EmitOMPSimdInit(const OMPLoopDirective &D, bool IsMonotonic = false);
+  void EmitOMPSimdFinal(
+      const OMPLoopDirective &D,
+      const llvm::function_ref<llvm::Value *(CodeGenFunction &)> CondGen);
+
+  /// Emits the lvalue for the expression with possibly captured variable.
+  LValue EmitOMPSharedLValue(const Expr *E);
+
+private:
+  /// Helpers for blocks.
+  llvm::Value *EmitBlockLiteral(const CGBlockInfo &Info);
+
+  /// struct with the values to be passed to the OpenMP loop-related functions
+  struct OMPLoopArguments {
+    /// loop lower bound
+    Address LB = Address::invalid();
+    /// loop upper bound
+    Address UB = Address::invalid();
+    /// loop stride
+    Address ST = Address::invalid();
+    /// isLastIteration argument for runtime functions
+    Address IL = Address::invalid();
+    /// Chunk value generated by sema
+    llvm::Value *Chunk = nullptr;
+    /// EnsureUpperBound
+    Expr *EUB = nullptr;
+    /// IncrementExpression
+    Expr *IncExpr = nullptr;
+    /// Loop initialization
+    Expr *Init = nullptr;
+    /// Loop exit condition
+    Expr *Cond = nullptr;
+    /// Update of LB after a whole chunk has been executed
+    Expr *NextLB = nullptr;
+    /// Update of UB after a whole chunk has been executed
+    Expr *NextUB = nullptr;
+    OMPLoopArguments() = default;
+    OMPLoopArguments(Address LB, Address UB, Address ST, Address IL,
+                     llvm::Value *Chunk = nullptr, Expr *EUB = nullptr,
+                     Expr *IncExpr = nullptr, Expr *Init = nullptr,
+                     Expr *Cond = nullptr, Expr *NextLB = nullptr,
+                     Expr *NextUB = nullptr)
+        : LB(LB), UB(UB), ST(ST), IL(IL), Chunk(Chunk), EUB(EUB),
+          IncExpr(IncExpr), Init(Init), Cond(Cond), NextLB(NextLB),
+          NextUB(NextUB) {}
+  };
+  void EmitOMPOuterLoop(bool DynamicOrOrdered, bool IsMonotonic,
+                        const OMPLoopDirective &S, OMPPrivateScope &LoopScope,
+                        const OMPLoopArguments &LoopArgs,
+                        const CodeGenLoopTy &CodeGenLoop,
+                        const CodeGenOrderedTy &CodeGenOrdered);
+  void EmitOMPForOuterLoop(const OpenMPScheduleTy &ScheduleKind,
+                           bool IsMonotonic, const OMPLoopDirective &S,
+                           OMPPrivateScope &LoopScope, bool Ordered,
+                           const OMPLoopArguments &LoopArgs,
+                           const CodeGenDispatchBoundsTy &CGDispatchBounds);
+  void EmitOMPDistributeOuterLoop(OpenMPDistScheduleClauseKind ScheduleKind,
+                                  const OMPLoopDirective &S,
+                                  OMPPrivateScope &LoopScope,
+                                  const OMPLoopArguments &LoopArgs,
+                                  const CodeGenLoopTy &CodeGenLoopContent);
+  /// Emit code for sections directive.
+  void EmitSections(const OMPExecutableDirective &S);
+
+public:
+
+  //===--------------------------------------------------------------------===//
+  //                         LValue Expression Emission
+  //===--------------------------------------------------------------------===//
+
+  /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type.
+  RValue GetUndefRValue(QualType Ty);
+
+  /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E
+  /// and issue an ErrorUnsupported style diagnostic (using the
+  /// provided Name).
+  RValue EmitUnsupportedRValue(const Expr *E,
+                               const char *Name);
+
+  /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue
+  /// an ErrorUnsupported style diagnostic (using the provided Name).
+  LValue EmitUnsupportedLValue(const Expr *E,
+                               const char *Name);
+
+  /// EmitLValue - Emit code to compute a designator that specifies the location
+  /// of the expression.
+  ///
+  /// This can return one of two things: a simple address or a bitfield
+  /// reference.  In either case, the LLVM Value* in the LValue structure is
+  /// guaranteed to be an LLVM pointer type.
+  ///
+  /// If this returns a bitfield reference, nothing about the pointee type of
+  /// the LLVM value is known: For example, it may not be a pointer to an
+  /// integer.
+  ///
+  /// If this returns a normal address, and if the lvalue's C type is fixed
+  /// size, this method guarantees that the returned pointer type will point to
+  /// an LLVM type of the same size of the lvalue's type.  If the lvalue has a
+  /// variable length type, this is not possible.
+  ///
+  LValue EmitLValue(const Expr *E);
+
+  /// Same as EmitLValue but additionally we generate checking code to
+  /// guard against undefined behavior.  This is only suitable when we know
+  /// that the address will be used to access the object.
+  LValue EmitCheckedLValue(const Expr *E, TypeCheckKind TCK);
+
+  RValue convertTempToRValue(Address addr, QualType type,
+                             SourceLocation Loc);
+
+  void EmitAtomicInit(Expr *E, LValue lvalue);
+
+  bool LValueIsSuitableForInlineAtomic(LValue Src);
+
+  RValue EmitAtomicLoad(LValue LV, SourceLocation SL,
+                        AggValueSlot Slot = AggValueSlot::ignored());
+
+  RValue EmitAtomicLoad(LValue lvalue, SourceLocation loc,
+                        llvm::AtomicOrdering AO, bool IsVolatile = false,
+                        AggValueSlot slot = AggValueSlot::ignored());
+
+  void EmitAtomicStore(RValue rvalue, LValue lvalue, bool isInit);
+
+  void EmitAtomicStore(RValue rvalue, LValue lvalue, llvm::AtomicOrdering AO,
+                       bool IsVolatile, bool isInit);
+
+  std::pair<RValue, llvm::Value *> EmitAtomicCompareExchange(
+      LValue Obj, RValue Expected, RValue Desired, SourceLocation Loc,
+      llvm::AtomicOrdering Success =
+          llvm::AtomicOrdering::SequentiallyConsistent,
+      llvm::AtomicOrdering Failure =
+          llvm::AtomicOrdering::SequentiallyConsistent,
+      bool IsWeak = false, AggValueSlot Slot = AggValueSlot::ignored());
+
+  void EmitAtomicUpdate(LValue LVal, llvm::AtomicOrdering AO,
+                        const llvm::function_ref<RValue(RValue)> &UpdateOp,
+                        bool IsVolatile);
+
+  /// EmitToMemory - Change a scalar value from its value
+  /// representation to its in-memory representation.
+  llvm::Value *EmitToMemory(llvm::Value *Value, QualType Ty);
+
+  /// EmitFromMemory - Change a scalar value from its memory
+  /// representation to its value representation.
+  llvm::Value *EmitFromMemory(llvm::Value *Value, QualType Ty);
+
+  /// Check if the scalar \p Value is within the valid range for the given
+  /// type \p Ty.
+  ///
+  /// Returns true if a check is needed (even if the range is unknown).
+  bool EmitScalarRangeCheck(llvm::Value *Value, QualType Ty,
+                            SourceLocation Loc);
+
+  /// EmitLoadOfScalar - Load a scalar value from an address, taking
+  /// care to appropriately convert from the memory representation to
+  /// the LLVM value representation.
+  llvm::Value *EmitLoadOfScalar(Address Addr, bool Volatile, QualType Ty,
+                                SourceLocation Loc,
+                                AlignmentSource Source = AlignmentSource::Type,
+                                bool isNontemporal = false) {
+    return EmitLoadOfScalar(Addr, Volatile, Ty, Loc, LValueBaseInfo(Source),
+                            CGM.getTBAAAccessInfo(Ty), isNontemporal);
+  }
+
+  llvm::Value *EmitLoadOfScalar(Address Addr, bool Volatile, QualType Ty,
+                                SourceLocation Loc, LValueBaseInfo BaseInfo,
+                                TBAAAccessInfo TBAAInfo,
+                                bool isNontemporal = false);
+
+  /// EmitLoadOfScalar - Load a scalar value from an address, taking
+  /// care to appropriately convert from the memory representation to
+  /// the LLVM value representation.  The l-value must be a simple
+  /// l-value.
+  llvm::Value *EmitLoadOfScalar(LValue lvalue, SourceLocation Loc);
+
+  /// EmitStoreOfScalar - Store a scalar value to an address, taking
+  /// care to appropriately convert from the memory representation to
+  /// the LLVM value representation.
+  void EmitStoreOfScalar(llvm::Value *Value, Address Addr,
+                         bool Volatile, QualType Ty,
+                         AlignmentSource Source = AlignmentSource::Type,
+                         bool isInit = false, bool isNontemporal = false) {
+    EmitStoreOfScalar(Value, Addr, Volatile, Ty, LValueBaseInfo(Source),
+                      CGM.getTBAAAccessInfo(Ty), isInit, isNontemporal);
+  }
+
+  void EmitStoreOfScalar(llvm::Value *Value, Address Addr,
+                         bool Volatile, QualType Ty,
+                         LValueBaseInfo BaseInfo, TBAAAccessInfo TBAAInfo,
+                         bool isInit = false, bool isNontemporal = false);
+
+  /// EmitStoreOfScalar - Store a scalar value to an address, taking
+  /// care to appropriately convert from the memory representation to
+  /// the LLVM value representation.  The l-value must be a simple
+  /// l-value.  The isInit flag indicates whether this is an initialization.
+  /// If so, atomic qualifiers are ignored and the store is always non-atomic.
+  void EmitStoreOfScalar(llvm::Value *value, LValue lvalue, bool isInit=false);
+
+  /// EmitLoadOfLValue - Given an expression that represents a value lvalue,
+  /// this method emits the address of the lvalue, then loads the result as an
+  /// rvalue, returning the rvalue.
+  RValue EmitLoadOfLValue(LValue V, SourceLocation Loc);
+  RValue EmitLoadOfExtVectorElementLValue(LValue V);
+  RValue EmitLoadOfBitfieldLValue(LValue LV, SourceLocation Loc);
+  RValue EmitLoadOfGlobalRegLValue(LValue LV);
+
+  /// EmitStoreThroughLValue - Store the specified rvalue into the specified
+  /// lvalue, where both are guaranteed to the have the same type, and that type
+  /// is 'Ty'.
+  void EmitStoreThroughLValue(RValue Src, LValue Dst, bool isInit = false);
+  void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst);
+  void EmitStoreThroughGlobalRegLValue(RValue Src, LValue Dst);
+
+  /// EmitStoreThroughBitfieldLValue - Store Src into Dst with same constraints
+  /// as EmitStoreThroughLValue.
+  ///
+  /// \param Result [out] - If non-null, this will be set to a Value* for the
+  /// bit-field contents after the store, appropriate for use as the result of
+  /// an assignment to the bit-field.
+  void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst,
+                                      llvm::Value **Result=nullptr);
+
+  /// Emit an l-value for an assignment (simple or compound) of complex type.
+  LValue EmitComplexAssignmentLValue(const BinaryOperator *E);
+  LValue EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E);
+  LValue EmitScalarCompoundAssignWithComplex(const CompoundAssignOperator *E,
+                                             llvm::Value *&Result);
+
+  // Note: only available for agg return types
+  LValue EmitBinaryOperatorLValue(const BinaryOperator *E);
+  LValue EmitCompoundAssignmentLValue(const CompoundAssignOperator *E);
+  // Note: only available for agg return types
+  LValue EmitCallExprLValue(const CallExpr *E);
+  // Note: only available for agg return types
+  LValue EmitVAArgExprLValue(const VAArgExpr *E);
+  LValue EmitDeclRefLValue(const DeclRefExpr *E);
+  LValue EmitStringLiteralLValue(const StringLiteral *E);
+  LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E);
+  LValue EmitPredefinedLValue(const PredefinedExpr *E);
+  LValue EmitUnaryOpLValue(const UnaryOperator *E);
+  LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E,
+                                bool Accessed = false);
+  LValue EmitOMPArraySectionExpr(const OMPArraySectionExpr *E,
+                                 bool IsLowerBound = true);
+  LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E);
+  LValue EmitMemberExpr(const MemberExpr *E);
+  LValue EmitObjCIsaExpr(const ObjCIsaExpr *E);
+  LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E);
+  LValue EmitInitListLValue(const InitListExpr *E);
+  LValue EmitConditionalOperatorLValue(const AbstractConditionalOperator *E);
+  LValue EmitCastLValue(const CastExpr *E);
+  LValue EmitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *E);
+  LValue EmitOpaqueValueLValue(const OpaqueValueExpr *e);
+
+  Address EmitExtVectorElementLValue(LValue V);
+
+  RValue EmitRValueForField(LValue LV, const FieldDecl *FD, SourceLocation Loc);
+
+  Address EmitArrayToPointerDecay(const Expr *Array,
+                                  LValueBaseInfo *BaseInfo = nullptr,
+                                  TBAAAccessInfo *TBAAInfo = nullptr);
+
+  class ConstantEmission {
+    llvm::PointerIntPair<llvm::Constant*, 1, bool> ValueAndIsReference;
+    ConstantEmission(llvm::Constant *C, bool isReference)
+      : ValueAndIsReference(C, isReference) {}
+  public:
+    ConstantEmission() {}
+    static ConstantEmission forReference(llvm::Constant *C) {
+      return ConstantEmission(C, true);
+    }
+    static ConstantEmission forValue(llvm::Constant *C) {
+      return ConstantEmission(C, false);
+    }
+
+    explicit operator bool() const {
+      return ValueAndIsReference.getOpaqueValue() != nullptr;
+    }
+
+    bool isReference() const { return ValueAndIsReference.getInt(); }
+    LValue getReferenceLValue(CodeGenFunction &CGF, Expr *refExpr) const {
+      assert(isReference());
+      return CGF.MakeNaturalAlignAddrLValue(ValueAndIsReference.getPointer(),
+                                            refExpr->getType());
+    }
+
+    llvm::Constant *getValue() const {
+      assert(!isReference());
+      return ValueAndIsReference.getPointer();
+    }
+  };
+
+  ConstantEmission tryEmitAsConstant(DeclRefExpr *refExpr);
+  ConstantEmission tryEmitAsConstant(const MemberExpr *ME);
+  llvm::Value *emitScalarConstant(const ConstantEmission &Constant, Expr *E);
+
+  RValue EmitPseudoObjectRValue(const PseudoObjectExpr *e,
+                                AggValueSlot slot = AggValueSlot::ignored());
+  LValue EmitPseudoObjectLValue(const PseudoObjectExpr *e);
+
+  llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface,
+                              const ObjCIvarDecl *Ivar);
+  LValue EmitLValueForField(LValue Base, const FieldDecl* Field);
+  LValue EmitLValueForLambdaField(const FieldDecl *Field);
+
+  /// EmitLValueForFieldInitialization - Like EmitLValueForField, except that
+  /// if the Field is a reference, this will return the address of the reference
+  /// and not the address of the value stored in the reference.
+  LValue EmitLValueForFieldInitialization(LValue Base,
+                                          const FieldDecl* Field);
+
+  LValue EmitLValueForIvar(QualType ObjectTy,
+                           llvm::Value* Base, const ObjCIvarDecl *Ivar,
+                           unsigned CVRQualifiers);
+
+  LValue EmitCXXConstructLValue(const CXXConstructExpr *E);
+  LValue EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E);
+  LValue EmitCXXTypeidLValue(const CXXTypeidExpr *E);
+  LValue EmitCXXUuidofLValue(const CXXUuidofExpr *E);
+
+  LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E);
+  LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E);
+  LValue EmitStmtExprLValue(const StmtExpr *E);
+  LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E);
+  LValue EmitObjCSelectorLValue(const ObjCSelectorExpr *E);
+  void   EmitDeclRefExprDbgValue(const DeclRefExpr *E, const APValue &Init);
+
+  //===--------------------------------------------------------------------===//
+  //                         Scalar Expression Emission
+  //===--------------------------------------------------------------------===//
+
+  /// EmitCall - Generate a call of the given function, expecting the given
+  /// result type, and using the given argument list which specifies both the
+  /// LLVM arguments and the types they were derived from.
+  RValue EmitCall(const CGFunctionInfo &CallInfo, const CGCallee &Callee,
+                  ReturnValueSlot ReturnValue, const CallArgList &Args,
+                  llvm::CallBase **callOrInvoke, SourceLocation Loc);
+  RValue EmitCall(const CGFunctionInfo &CallInfo, const CGCallee &Callee,
+                  ReturnValueSlot ReturnValue, const CallArgList &Args,
+                  llvm::CallBase **callOrInvoke = nullptr) {
+    return EmitCall(CallInfo, Callee, ReturnValue, Args, callOrInvoke,
+                    SourceLocation());
+  }
+  RValue EmitCall(QualType FnType, const CGCallee &Callee, const CallExpr *E,
+                  ReturnValueSlot ReturnValue, llvm::Value *Chain = nullptr);
+  RValue EmitCallExpr(const CallExpr *E,
+                      ReturnValueSlot ReturnValue = ReturnValueSlot());
+  RValue EmitSimpleCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue);
+  CGCallee EmitCallee(const Expr *E);
+
+  void checkTargetFeatures(const CallExpr *E, const FunctionDecl *TargetDecl);
+  void checkTargetFeatures(SourceLocation Loc, const FunctionDecl *TargetDecl);
+
+  llvm::CallInst *EmitRuntimeCall(llvm::FunctionCallee callee,
+                                  const Twine &name = "");
+  llvm::CallInst *EmitRuntimeCall(llvm::FunctionCallee callee,
+                                  ArrayRef<llvm::Value *> args,
+                                  const Twine &name = "");
+  llvm::CallInst *EmitNounwindRuntimeCall(llvm::FunctionCallee callee,
+                                          const Twine &name = "");
+  llvm::CallInst *EmitNounwindRuntimeCall(llvm::FunctionCallee callee,
+                                          ArrayRef<llvm::Value *> args,
+                                          const Twine &name = "");
+
+  SmallVector<llvm::OperandBundleDef, 1>
+  getBundlesForFunclet(llvm::Value *Callee);
+
+  llvm::CallBase *EmitCallOrInvoke(llvm::FunctionCallee Callee,
+                                   ArrayRef<llvm::Value *> Args,
+                                   const Twine &Name = "");
+  llvm::CallBase *EmitRuntimeCallOrInvoke(llvm::FunctionCallee callee,
+                                          ArrayRef<llvm::Value *> args,
+                                          const Twine &name = "");
+  llvm::CallBase *EmitRuntimeCallOrInvoke(llvm::FunctionCallee callee,
+                                          const Twine &name = "");
+  void EmitNoreturnRuntimeCallOrInvoke(llvm::FunctionCallee callee,
+                                       ArrayRef<llvm::Value *> args);
+
+  CGCallee BuildAppleKextVirtualCall(const CXXMethodDecl *MD,
+                                     NestedNameSpecifier *Qual,
+                                     llvm::Type *Ty);
+
+  CGCallee BuildAppleKextVirtualDestructorCall(const CXXDestructorDecl *DD,
+                                               CXXDtorType Type,
+                                               const CXXRecordDecl *RD);
+
+  // Return the copy constructor name with the prefix "__copy_constructor_"
+  // removed.
+  static std::string getNonTrivialCopyConstructorStr(QualType QT,
+                                                     CharUnits Alignment,
+                                                     bool IsVolatile,
+                                                     ASTContext &Ctx);
+
+  // Return the destructor name with the prefix "__destructor_" removed.
+  static std::string getNonTrivialDestructorStr(QualType QT,
+                                                CharUnits Alignment,
+                                                bool IsVolatile,
+                                                ASTContext &Ctx);
+
+  // These functions emit calls to the special functions of non-trivial C
+  // structs.
+  void defaultInitNonTrivialCStructVar(LValue Dst);
+  void callCStructDefaultConstructor(LValue Dst);
+  void callCStructDestructor(LValue Dst);
+  void callCStructCopyConstructor(LValue Dst, LValue Src);
+  void callCStructMoveConstructor(LValue Dst, LValue Src);
+  void callCStructCopyAssignmentOperator(LValue Dst, LValue Src);
+  void callCStructMoveAssignmentOperator(LValue Dst, LValue Src);
+
+  RValue
+  EmitCXXMemberOrOperatorCall(const CXXMethodDecl *Method,
+                              const CGCallee &Callee,
+                              ReturnValueSlot ReturnValue, llvm::Value *This,
+                              llvm::Value *ImplicitParam,
+                              QualType ImplicitParamTy, const CallExpr *E,
+                              CallArgList *RtlArgs);
+  RValue EmitCXXDestructorCall(GlobalDecl Dtor, const CGCallee &Callee,
+                               llvm::Value *This, QualType ThisTy,
+                               llvm::Value *ImplicitParam,
+                               QualType ImplicitParamTy, const CallExpr *E);
+  RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E,
+                               ReturnValueSlot ReturnValue);
+  RValue EmitCXXMemberOrOperatorMemberCallExpr(const CallExpr *CE,
+                                               const CXXMethodDecl *MD,
+                                               ReturnValueSlot ReturnValue,
+                                               bool HasQualifier,
+                                               NestedNameSpecifier *Qualifier,
+                                               bool IsArrow, const Expr *Base);
+  // Compute the object pointer.
+  Address EmitCXXMemberDataPointerAddress(const Expr *E, Address base,
+                                          llvm::Value *memberPtr,
+                                          const MemberPointerType *memberPtrType,
+                                          LValueBaseInfo *BaseInfo = nullptr,
+                                          TBAAAccessInfo *TBAAInfo = nullptr);
+  RValue EmitCXXMemberPointerCallExpr(const CXXMemberCallExpr *E,
+                                      ReturnValueSlot ReturnValue);
+
+  RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E,
+                                       const CXXMethodDecl *MD,
+                                       ReturnValueSlot ReturnValue);
+  RValue EmitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *E);
+
+  RValue EmitCUDAKernelCallExpr(const CUDAKernelCallExpr *E,
+                                ReturnValueSlot ReturnValue);
+
+  RValue EmitNVPTXDevicePrintfCallExpr(const CallExpr *E,
+                                       ReturnValueSlot ReturnValue);
+
+  RValue EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
+                         const CallExpr *E, ReturnValueSlot ReturnValue);
+
+  RValue emitRotate(const CallExpr *E, bool IsRotateRight);
+
+  /// Emit IR for __builtin_os_log_format.
+  RValue emitBuiltinOSLogFormat(const CallExpr &E);
+
+  /// Emit IR for __builtin_is_aligned.
+  RValue EmitBuiltinIsAligned(const CallExpr *E);
+  /// Emit IR for __builtin_align_up/__builtin_align_down.
+  RValue EmitBuiltinAlignTo(const CallExpr *E, bool AlignUp);
+
+  llvm::Function *generateBuiltinOSLogHelperFunction(
+      const analyze_os_log::OSLogBufferLayout &Layout,
+      CharUnits BufferAlignment);
+
+  RValue EmitBlockCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue);
+
+  /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call
+  /// is unhandled by the current target.
+  llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E,
+                                     ReturnValueSlot ReturnValue);
+
+  llvm::Value *EmitAArch64CompareBuiltinExpr(llvm::Value *Op, llvm::Type *Ty,
+                                             const llvm::CmpInst::Predicate Fp,
+                                             const llvm::CmpInst::Predicate Ip,
+                                             const llvm::Twine &Name = "");
+  llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E,
+                                  ReturnValueSlot ReturnValue,
+                                  llvm::Triple::ArchType Arch);
+  llvm::Value *EmitARMMVEBuiltinExpr(unsigned BuiltinID, const CallExpr *E,
+                                     ReturnValueSlot ReturnValue,
+                                     llvm::Triple::ArchType Arch);
+
+  llvm::Value *EmitCommonNeonBuiltinExpr(unsigned BuiltinID,
+                                         unsigned LLVMIntrinsic,
+                                         unsigned AltLLVMIntrinsic,
+                                         const char *NameHint,
+                                         unsigned Modifier,
+                                         const CallExpr *E,
+                                         SmallVectorImpl<llvm::Value *> &Ops,
+                                         Address PtrOp0, Address PtrOp1,
+                                         llvm::Triple::ArchType Arch);
+
+  llvm::Function *LookupNeonLLVMIntrinsic(unsigned IntrinsicID,
+                                          unsigned Modifier, llvm::Type *ArgTy,
+                                          const CallExpr *E);
+  llvm::Value *EmitNeonCall(llvm::Function *F,
+                            SmallVectorImpl<llvm::Value*> &O,
+                            const char *name,
+                            unsigned shift = 0, bool rightshift = false);
+  llvm::Value *EmitNeonSplat(llvm::Value *V, llvm::Constant *Idx);
+  llvm::Value *EmitNeonShiftVector(llvm::Value *V, llvm::Type *Ty,
+                                   bool negateForRightShift);
+  llvm::Value *EmitNeonRShiftImm(llvm::Value *Vec, llvm::Value *Amt,
+                                 llvm::Type *Ty, bool usgn, const char *name);
+  llvm::Value *vectorWrapScalar16(llvm::Value *Op);
+  llvm::Value *EmitAArch64BuiltinExpr(unsigned BuiltinID, const CallExpr *E,
+                                      llvm::Triple::ArchType Arch);
+  llvm::Value *EmitBPFBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
+
+  llvm::Value *BuildVector(ArrayRef<llvm::Value*> Ops);
+  llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E);
+  llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
+  llvm::Value *EmitAMDGPUBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
+  llvm::Value *EmitSystemZBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
+  llvm::Value *EmitNVPTXBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
+  llvm::Value *EmitWebAssemblyBuiltinExpr(unsigned BuiltinID,
+                                          const CallExpr *E);
+  llvm::Value *EmitHexagonBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
+
+private:
+  enum class MSVCIntrin;
+
+public:
+  llvm::Value *EmitMSVCBuiltinExpr(MSVCIntrin BuiltinID, const CallExpr *E);
+
+  llvm::Value *EmitBuiltinAvailable(ArrayRef<llvm::Value *> Args);
+
+  llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E);
+  llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E);
+  llvm::Value *EmitObjCBoxedExpr(const ObjCBoxedExpr *E);
+  llvm::Value *EmitObjCArrayLiteral(const ObjCArrayLiteral *E);
+  llvm::Value *EmitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E);
+  llvm::Value *EmitObjCCollectionLiteral(const Expr *E,
+                                const ObjCMethodDecl *MethodWithObjects);
+  llvm::Value *EmitObjCSelectorExpr(const ObjCSelectorExpr *E);
+  RValue EmitObjCMessageExpr(const ObjCMessageExpr *E,
+                             ReturnValueSlot Return = ReturnValueSlot());
+
+  /// Retrieves the default cleanup kind for an ARC cleanup.
+  /// Except under -fobjc-arc-eh, ARC cleanups are normal-only.
+  CleanupKind getARCCleanupKind() {
+    return CGM.getCodeGenOpts().ObjCAutoRefCountExceptions
+             ? NormalAndEHCleanup : NormalCleanup;
+  }
+
+  // ARC primitives.
+  void EmitARCInitWeak(Address addr, llvm::Value *value);
+  void EmitARCDestroyWeak(Address addr);
+  llvm::Value *EmitARCLoadWeak(Address addr);
+  llvm::Value *EmitARCLoadWeakRetained(Address addr);
+  llvm::Value *EmitARCStoreWeak(Address addr, llvm::Value *value, bool ignored);
+  void emitARCCopyAssignWeak(QualType Ty, Address DstAddr, Address SrcAddr);
+  void emitARCMoveAssignWeak(QualType Ty, Address DstAddr, Address SrcAddr);
+  void EmitARCCopyWeak(Address dst, Address src);
+  void EmitARCMoveWeak(Address dst, Address src);
+  llvm::Value *EmitARCRetainAutorelease(QualType type, llvm::Value *value);
+  llvm::Value *EmitARCRetainAutoreleaseNonBlock(llvm::Value *value);
+  llvm::Value *EmitARCStoreStrong(LValue lvalue, llvm::Value *value,
+                                  bool resultIgnored);
+  llvm::Value *EmitARCStoreStrongCall(Address addr, llvm::Value *value,
+                                      bool resultIgnored);
+  llvm::Value *EmitARCRetain(QualType type, llvm::Value *value);
+  llvm::Value *EmitARCRetainNonBlock(llvm::Value *value);
+  llvm::Value *EmitARCRetainBlock(llvm::Value *value, bool mandatory);
+  void EmitARCDestroyStrong(Address addr, ARCPreciseLifetime_t precise);
+  void EmitARCRelease(llvm::Value *value, ARCPreciseLifetime_t precise);
+  llvm::Value *EmitARCAutorelease(llvm::Value *value);
+  llvm::Value *EmitARCAutoreleaseReturnValue(llvm::Value *value);
+  llvm::Value *EmitARCRetainAutoreleaseReturnValue(llvm::Value *value);
+  llvm::Value *EmitARCRetainAutoreleasedReturnValue(llvm::Value *value);
+  llvm::Value *EmitARCUnsafeClaimAutoreleasedReturnValue(llvm::Value *value);
+
+  llvm::Value *EmitObjCAutorelease(llvm::Value *value, llvm::Type *returnType);
+  llvm::Value *EmitObjCRetainNonBlock(llvm::Value *value,
+                                      llvm::Type *returnType);
+  void EmitObjCRelease(llvm::Value *value, ARCPreciseLifetime_t precise);
+
+  std::pair<LValue,llvm::Value*>
+  EmitARCStoreAutoreleasing(const BinaryOperator *e);
+  std::pair<LValue,llvm::Value*>
+  EmitARCStoreStrong(const BinaryOperator *e, bool ignored);
+  std::pair<LValue,llvm::Value*>
+  EmitARCStoreUnsafeUnretained(const BinaryOperator *e, bool ignored);
+
+  llvm::Value *EmitObjCAlloc(llvm::Value *value,
+                             llvm::Type *returnType);
+  llvm::Value *EmitObjCAllocWithZone(llvm::Value *value,
+                                     llvm::Type *returnType);
+  llvm::Value *EmitObjCAllocInit(llvm::Value *value, llvm::Type *resultType);
+
+  llvm::Value *EmitObjCThrowOperand(const Expr *expr);
+  llvm::Value *EmitObjCConsumeObject(QualType T, llvm::Value *Ptr);
+  llvm::Value *EmitObjCExtendObjectLifetime(QualType T, llvm::Value *Ptr);
+
+  llvm::Value *EmitARCExtendBlockObject(const Expr *expr);
+  llvm::Value *EmitARCReclaimReturnedObject(const Expr *e,
+                                            bool allowUnsafeClaim);
+  llvm::Value *EmitARCRetainScalarExpr(const Expr *expr);
+  llvm::Value *EmitARCRetainAutoreleaseScalarExpr(const Expr *expr);
+  llvm::Value *EmitARCUnsafeUnretainedScalarExpr(const Expr *expr);
+
+  void EmitARCIntrinsicUse(ArrayRef<llvm::Value*> values);
+
+  static Destroyer destroyARCStrongImprecise;
+  static Destroyer destroyARCStrongPrecise;
+  static Destroyer destroyARCWeak;
+  static Destroyer emitARCIntrinsicUse;
+  static Destroyer destroyNonTrivialCStruct;
+
+  void EmitObjCAutoreleasePoolPop(llvm::Value *Ptr);
+  llvm::Value *EmitObjCAutoreleasePoolPush();
+  llvm::Value *EmitObjCMRRAutoreleasePoolPush();
+  void EmitObjCAutoreleasePoolCleanup(llvm::Value *Ptr);
+  void EmitObjCMRRAutoreleasePoolPop(llvm::Value *Ptr);
+
+  /// Emits a reference binding to the passed in expression.
+  RValue EmitReferenceBindingToExpr(const Expr *E);
+
+  //===--------------------------------------------------------------------===//
+  //                           Expression Emission
+  //===--------------------------------------------------------------------===//
+
+  // Expressions are broken into three classes: scalar, complex, aggregate.
+
+  /// EmitScalarExpr - Emit the computation of the specified expression of LLVM
+  /// scalar type, returning the result.
+  llvm::Value *EmitScalarExpr(const Expr *E , bool IgnoreResultAssign = false);
+
+  /// Emit a conversion from the specified type to the specified destination
+  /// type, both of which are LLVM scalar types.
+  llvm::Value *EmitScalarConversion(llvm::Value *Src, QualType SrcTy,
+                                    QualType DstTy, SourceLocation Loc);
+
+  /// Emit a conversion from the specified complex type to the specified
+  /// destination type, where the destination type is an LLVM scalar type.
+  llvm::Value *EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy,
+                                             QualType DstTy,
+                                             SourceLocation Loc);
+
+  /// EmitAggExpr - Emit the computation of the specified expression
+  /// of aggregate type.  The result is computed into the given slot,
+  /// which may be null to indicate that the value is not needed.
+  void EmitAggExpr(const Expr *E, AggValueSlot AS);
+
+  /// EmitAggExprToLValue - Emit the computation of the specified expression of
+  /// aggregate type into a temporary LValue.
+  LValue EmitAggExprToLValue(const Expr *E);
+
+  /// EmitExtendGCLifetime - Given a pointer to an Objective-C object,
+  /// make sure it survives garbage collection until this point.
+  void EmitExtendGCLifetime(llvm::Value *object);
+
+  /// EmitComplexExpr - Emit the computation of the specified expression of
+  /// complex type, returning the result.
+  ComplexPairTy EmitComplexExpr(const Expr *E,
+                                bool IgnoreReal = false,
+                                bool IgnoreImag = false);
+
+  /// EmitComplexExprIntoLValue - Emit the given expression of complex
+  /// type and place its result into the specified l-value.
+  void EmitComplexExprIntoLValue(const Expr *E, LValue dest, bool isInit);
+
+  /// EmitStoreOfComplex - Store a complex number into the specified l-value.
+  void EmitStoreOfComplex(ComplexPairTy V, LValue dest, bool isInit);
+
+  /// EmitLoadOfComplex - Load a complex number from the specified l-value.
+  ComplexPairTy EmitLoadOfComplex(LValue src, SourceLocation loc);
+
+  Address emitAddrOfRealComponent(Address complex, QualType complexType);
+  Address emitAddrOfImagComponent(Address complex, QualType complexType);
+
+  /// AddInitializerToStaticVarDecl - Add the initializer for 'D' to the
+  /// global variable that has already been created for it.  If the initializer
+  /// has a different type than GV does, this may free GV and return a different
+  /// one.  Otherwise it just returns GV.
+  llvm::GlobalVariable *
+  AddInitializerToStaticVarDecl(const VarDecl &D,
+                                llvm::GlobalVariable *GV);
+
+  // Emit an @llvm.invariant.start call for the given memory region.
+  void EmitInvariantStart(llvm::Constant *Addr, CharUnits Size);
+
+  /// EmitCXXGlobalVarDeclInit - Create the initializer for a C++
+  /// variable with global storage.
+  void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr,
+                                bool PerformInit);
+
+  llvm::Function *createAtExitStub(const VarDecl &VD, llvm::FunctionCallee Dtor,
+                                   llvm::Constant *Addr);
+
+  /// Call atexit() with a function that passes the given argument to
+  /// the given function.
+  void registerGlobalDtorWithAtExit(const VarDecl &D, llvm::FunctionCallee fn,
+                                    llvm::Constant *addr);
+
+  /// Call atexit() with function dtorStub.
+  void registerGlobalDtorWithAtExit(llvm::Constant *dtorStub);
+
+  /// Emit code in this function to perform a guarded variable
+  /// initialization.  Guarded initializations are used when it's not
+  /// possible to prove that an initialization will be done exactly
+  /// once, e.g. with a static local variable or a static data member
+  /// of a class template.
+  void EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr,
+                          bool PerformInit);
+
+  enum class GuardKind { VariableGuard, TlsGuard };
+
+  /// Emit a branch to select whether or not to perform guarded initialization.
+  void EmitCXXGuardedInitBranch(llvm::Value *NeedsInit,
+                                llvm::BasicBlock *InitBlock,
+                                llvm::BasicBlock *NoInitBlock,
+                                GuardKind Kind, const VarDecl *D);
+
+  /// GenerateCXXGlobalInitFunc - Generates code for initializing global
+  /// variables.
+  void
+  GenerateCXXGlobalInitFunc(llvm::Function *Fn,
+                            ArrayRef<llvm::Function *> CXXThreadLocals,
+                            ConstantAddress Guard = ConstantAddress::invalid());
+
+  /// GenerateCXXGlobalDtorsFunc - Generates code for destroying global
+  /// variables.
+  void GenerateCXXGlobalDtorsFunc(
+      llvm::Function *Fn,
+      const std::vector<std::tuple<llvm::FunctionType *, llvm::WeakTrackingVH,
+                                   llvm::Constant *>> &DtorsAndObjects);
+
+  void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn,
+                                        const VarDecl *D,
+                                        llvm::GlobalVariable *Addr,
+                                        bool PerformInit);
+
+  void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest);
+
+  void EmitSynthesizedCXXCopyCtor(Address Dest, Address Src, const Expr *Exp);
+
+  void enterFullExpression(const FullExpr *E) {
+    if (const auto *EWC = dyn_cast<ExprWithCleanups>(E))
+      if (EWC->getNumObjects() == 0)
+        return;
+    enterNonTrivialFullExpression(E);
+  }
+  void enterNonTrivialFullExpression(const FullExpr *E);
+
+  void EmitCXXThrowExpr(const CXXThrowExpr *E, bool KeepInsertionPoint = true);
+
+  RValue EmitAtomicExpr(AtomicExpr *E);
+
+  //===--------------------------------------------------------------------===//
+  //                         Annotations Emission
+  //===--------------------------------------------------------------------===//
+
+  /// Emit an annotation call (intrinsic).
+  llvm::Value *EmitAnnotationCall(llvm::Function *AnnotationFn,
+                                  llvm::Value *AnnotatedVal,
+                                  StringRef AnnotationStr,
+                                  SourceLocation Location);
+
+  /// Emit local annotations for the local variable V, declared by D.
+  void EmitVarAnnotations(const VarDecl *D, llvm::Value *V);
+
+  /// Emit field annotations for the given field & value. Returns the
+  /// annotation result.
+  Address EmitFieldAnnotations(const FieldDecl *D, Address V);
+
+  //===--------------------------------------------------------------------===//
+  //                             Internal Helpers
+  //===--------------------------------------------------------------------===//
+
+  /// ContainsLabel - Return true if the statement contains a label in it.  If
+  /// this statement is not executed normally, it not containing a label means
+  /// that we can just remove the code.
+  static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false);
+
+  /// containsBreak - Return true if the statement contains a break out of it.
+  /// If the statement (recursively) contains a switch or loop with a break
+  /// inside of it, this is fine.
+  static bool containsBreak(const Stmt *S);
+
+  /// Determine if the given statement might introduce a declaration into the
+  /// current scope, by being a (possibly-labelled) DeclStmt.
+  static bool mightAddDeclToScope(const Stmt *S);
+
+  /// ConstantFoldsToSimpleInteger - If the specified expression does not fold
+  /// to a constant, or if it does but contains a label, return false.  If it
+  /// constant folds return true and set the boolean result in Result.
+  bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result,
+                                    bool AllowLabels = false);
+
+  /// ConstantFoldsToSimpleInteger - If the specified expression does not fold
+  /// to a constant, or if it does but contains a label, return false.  If it
+  /// constant folds return true and set the folded value.
+  bool ConstantFoldsToSimpleInteger(const Expr *Cond, llvm::APSInt &Result,
+                                    bool AllowLabels = false);
+
+  /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an
+  /// if statement) to the specified blocks.  Based on the condition, this might
+  /// try to simplify the codegen of the conditional based on the branch.
+  /// TrueCount should be the number of times we expect the condition to
+  /// evaluate to true based on PGO data.
+  void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock,
+                            llvm::BasicBlock *FalseBlock, uint64_t TrueCount);
+
+  /// Given an assignment `*LHS = RHS`, emit a test that checks if \p RHS is
+  /// nonnull, if \p LHS is marked _Nonnull.
+  void EmitNullabilityCheck(LValue LHS, llvm::Value *RHS, SourceLocation Loc);
+
+  /// An enumeration which makes it easier to specify whether or not an
+  /// operation is a subtraction.
+  enum { NotSubtraction = false, IsSubtraction = true };
+
+  /// Same as IRBuilder::CreateInBoundsGEP, but additionally emits a check to
+  /// detect undefined behavior when the pointer overflow sanitizer is enabled.
+  /// \p SignedIndices indicates whether any of the GEP indices are signed.
+  /// \p IsSubtraction indicates whether the expression used to form the GEP
+  /// is a subtraction.
+  llvm::Value *EmitCheckedInBoundsGEP(llvm::Value *Ptr,
+                                      ArrayRef<llvm::Value *> IdxList,
+                                      bool SignedIndices,
+                                      bool IsSubtraction,
+                                      SourceLocation Loc,
+                                      const Twine &Name = "");
+
+  /// Specifies which type of sanitizer check to apply when handling a
+  /// particular builtin.
+  enum BuiltinCheckKind {
+    BCK_CTZPassedZero,
+    BCK_CLZPassedZero,
+  };
+
+  /// Emits an argument for a call to a builtin. If the builtin sanitizer is
+  /// enabled, a runtime check specified by \p Kind is also emitted.
+  llvm::Value *EmitCheckedArgForBuiltin(const Expr *E, BuiltinCheckKind Kind);
+
+  /// Emit a description of a type in a format suitable for passing to
+  /// a runtime sanitizer handler.
+  llvm::Constant *EmitCheckTypeDescriptor(QualType T);
+
+  /// Convert a value into a format suitable for passing to a runtime
+  /// sanitizer handler.
+  llvm::Value *EmitCheckValue(llvm::Value *V);
+
+  /// Emit a description of a source location in a format suitable for
+  /// passing to a runtime sanitizer handler.
+  llvm::Constant *EmitCheckSourceLocation(SourceLocation Loc);
+
+  /// Create a basic block that will either trap or call a handler function in
+  /// the UBSan runtime with the provided arguments, and create a conditional
+  /// branch to it.
+  void EmitCheck(ArrayRef<std::pair<llvm::Value *, SanitizerMask>> Checked,
+                 SanitizerHandler Check, ArrayRef<llvm::Constant *> StaticArgs,
+                 ArrayRef<llvm::Value *> DynamicArgs);
+
+  /// Emit a slow path cross-DSO CFI check which calls __cfi_slowpath
+  /// if Cond if false.
+  void EmitCfiSlowPathCheck(SanitizerMask Kind, llvm::Value *Cond,
+                            llvm::ConstantInt *TypeId, llvm::Value *Ptr,
+                            ArrayRef<llvm::Constant *> StaticArgs);
+
+  /// Emit a reached-unreachable diagnostic if \p Loc is valid and runtime
+  /// checking is enabled. Otherwise, just emit an unreachable instruction.
+  void EmitUnreachable(SourceLocation Loc);
+
+  /// Create a basic block that will call the trap intrinsic, and emit a
+  /// conditional branch to it, for the -ftrapv checks.
+  void EmitTrapCheck(llvm::Value *Checked);
+
+  /// Emit a call to trap or debugtrap and attach function attribute
+  /// "trap-func-name" if specified.
+  llvm::CallInst *EmitTrapCall(llvm::Intrinsic::ID IntrID);
+
+  /// Emit a stub for the cross-DSO CFI check function.
+  void EmitCfiCheckStub();
+
+  /// Emit a cross-DSO CFI failure handling function.
+  void EmitCfiCheckFail();
+
+  /// Create a check for a function parameter that may potentially be
+  /// declared as non-null.
+  void EmitNonNullArgCheck(RValue RV, QualType ArgType, SourceLocation ArgLoc,
+                           AbstractCallee AC, unsigned ParmNum);
+
+  /// EmitCallArg - Emit a single call argument.
+  void EmitCallArg(CallArgList &args, const Expr *E, QualType ArgType);
+
+  /// EmitDelegateCallArg - We are performing a delegate call; that
+  /// is, the current function is delegating to another one.  Produce
+  /// a r-value suitable for passing the given parameter.
+  void EmitDelegateCallArg(CallArgList &args, const VarDecl *param,
+                           SourceLocation loc);
+
+  /// SetFPAccuracy - Set the minimum required accuracy of the given floating
+  /// point operation, expressed as the maximum relative error in ulp.
+  void SetFPAccuracy(llvm::Value *Val, float Accuracy);
+
+  /// SetFPModel - Control floating point behavior via fp-model settings.
+  void SetFPModel();
+
+private:
+  llvm::MDNode *getRangeForLoadFromType(QualType Ty);
+  void EmitReturnOfRValue(RValue RV, QualType Ty);
+
+  void deferPlaceholderReplacement(llvm::Instruction *Old, llvm::Value *New);
+
+  llvm::SmallVector<std::pair<llvm::Instruction *, llvm::Value *>, 4>
+  DeferredReplacements;
+
+  /// Set the address of a local variable.
+  void setAddrOfLocalVar(const VarDecl *VD, Address Addr) {
+    assert(!LocalDeclMap.count(VD) && "Decl already exists in LocalDeclMap!");
+    LocalDeclMap.insert({VD, Addr});
+  }
+
+  /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty
+  /// from function arguments into \arg Dst. See ABIArgInfo::Expand.
+  ///
+  /// \param AI - The first function argument of the expansion.
+  void ExpandTypeFromArgs(QualType Ty, LValue Dst,
+                          SmallVectorImpl<llvm::Value *>::iterator &AI);
+
+  /// ExpandTypeToArgs - Expand an CallArg \arg Arg, with the LLVM type for \arg
+  /// Ty, into individual arguments on the provided vector \arg IRCallArgs,
+  /// starting at index \arg IRCallArgPos. See ABIArgInfo::Expand.
+  void ExpandTypeToArgs(QualType Ty, CallArg Arg, llvm::FunctionType *IRFuncTy,
+                        SmallVectorImpl<llvm::Value *> &IRCallArgs,
+                        unsigned &IRCallArgPos);
+
+  llvm::Value* EmitAsmInput(const TargetInfo::ConstraintInfo &Info,
+                            const Expr *InputExpr, std::string &ConstraintStr);
+
+  llvm::Value* EmitAsmInputLValue(const TargetInfo::ConstraintInfo &Info,
+                                  LValue InputValue, QualType InputType,
+                                  std::string &ConstraintStr,
+                                  SourceLocation Loc);
+
+  /// Attempts to statically evaluate the object size of E. If that
+  /// fails, emits code to figure the size of E out for us. This is
+  /// pass_object_size aware.
+  ///
+  /// If EmittedExpr is non-null, this will use that instead of re-emitting E.
+  llvm::Value *evaluateOrEmitBuiltinObjectSize(const Expr *E, unsigned Type,
+                                               llvm::IntegerType *ResType,
+                                               llvm::Value *EmittedE,
+                                               bool IsDynamic);
+
+  /// Emits the size of E, as required by __builtin_object_size. This
+  /// function is aware of pass_object_size parameters, and will act accordingly
+  /// if E is a parameter with the pass_object_size attribute.
+  llvm::Value *emitBuiltinObjectSize(const Expr *E, unsigned Type,
+                                     llvm::IntegerType *ResType,
+                                     llvm::Value *EmittedE,
+                                     bool IsDynamic);
+
+  void emitZeroOrPatternForAutoVarInit(QualType type, const VarDecl &D,
+                                       Address Loc);
+
+public:
+#ifndef NDEBUG
+  // Determine whether the given argument is an Objective-C method
+  // that may have type parameters in its signature.
+  static bool isObjCMethodWithTypeParams(const ObjCMethodDecl *method) {
+    const DeclContext *dc = method->getDeclContext();
+    if (const ObjCInterfaceDecl *classDecl= dyn_cast<ObjCInterfaceDecl>(dc)) {
+      return classDecl->getTypeParamListAsWritten();
+    }
+
+    if (const ObjCCategoryDecl *catDecl = dyn_cast<ObjCCategoryDecl>(dc)) {
+      return catDecl->getTypeParamList();
+    }
+
+    return false;
+  }
+
+  template<typename T>
+  static bool isObjCMethodWithTypeParams(const T *) { return false; }
+#endif
+
+  enum class EvaluationOrder {
+    ///! No language constraints on evaluation order.
+    Default,
+    ///! Language semantics require left-to-right evaluation.
+    ForceLeftToRight,
+    ///! Language semantics require right-to-left evaluation.
+    ForceRightToLeft
+  };
+
+  /// EmitCallArgs - Emit call arguments for a function.
+  template <typename T>
+  void EmitCallArgs(CallArgList &Args, const T *CallArgTypeInfo,
+                    llvm::iterator_range<CallExpr::const_arg_iterator> ArgRange,
+                    AbstractCallee AC = AbstractCallee(),
+                    unsigned ParamsToSkip = 0,
+                    EvaluationOrder Order = EvaluationOrder::Default) {
+    SmallVector<QualType, 16> ArgTypes;
+    CallExpr::const_arg_iterator Arg = ArgRange.begin();
+
+    assert((ParamsToSkip == 0 || CallArgTypeInfo) &&
+           "Can't skip parameters if type info is not provided");
+    if (CallArgTypeInfo) {
+#ifndef NDEBUG
+      bool isGenericMethod = isObjCMethodWithTypeParams(CallArgTypeInfo);
+#endif
+
+      // First, use the argument types that the type info knows about
+      for (auto I = CallArgTypeInfo->param_type_begin() + ParamsToSkip,
+                E = CallArgTypeInfo->param_type_end();
+           I != E; ++I, ++Arg) {
+        assert(Arg != ArgRange.end() && "Running over edge of argument list!");
+        assert((isGenericMethod ||
+                ((*I)->isVariablyModifiedType() ||
+                 (*I).getNonReferenceType()->isObjCRetainableType() ||
+                 getContext()
+                         .getCanonicalType((*I).getNonReferenceType())
+                         .getTypePtr() ==
+                     getContext()
+                         .getCanonicalType((*Arg)->getType())
+                         .getTypePtr())) &&
+               "type mismatch in call argument!");
+        ArgTypes.push_back(*I);
+      }
+    }
+
+    // Either we've emitted all the call args, or we have a call to variadic
+    // function.
+    assert((Arg == ArgRange.end() || !CallArgTypeInfo ||
+            CallArgTypeInfo->isVariadic()) &&
+           "Extra arguments in non-variadic function!");
+
+    // If we still have any arguments, emit them using the type of the argument.
+    for (auto *A : llvm::make_range(Arg, ArgRange.end()))
+      ArgTypes.push_back(CallArgTypeInfo ? getVarArgType(A) : A->getType());
+
+    EmitCallArgs(Args, ArgTypes, ArgRange, AC, ParamsToSkip, Order);
+  }
+
+  void EmitCallArgs(CallArgList &Args, ArrayRef<QualType> ArgTypes,
+                    llvm::iterator_range<CallExpr::const_arg_iterator> ArgRange,
+                    AbstractCallee AC = AbstractCallee(),
+                    unsigned ParamsToSkip = 0,
+                    EvaluationOrder Order = EvaluationOrder::Default);
+
+  /// EmitPointerWithAlignment - Given an expression with a pointer type,
+  /// emit the value and compute our best estimate of the alignment of the
+  /// pointee.
+  ///
+  /// \param BaseInfo - If non-null, this will be initialized with
+  /// information about the source of the alignment and the may-alias
+  /// attribute.  Note that this function will conservatively fall back on
+  /// the type when it doesn't recognize the expression and may-alias will
+  /// be set to false.
+  ///
+  /// One reasonable way to use this information is when there's a language
+  /// guarantee that the pointer must be aligned to some stricter value, and
+  /// we're simply trying to ensure that sufficiently obvious uses of under-
+  /// aligned objects don't get miscompiled; for example, a placement new
+  /// into the address of a local variable.  In such a case, it's quite
+  /// reasonable to just ignore the returned alignment when it isn't from an
+  /// explicit source.
+  Address EmitPointerWithAlignment(const Expr *Addr,
+                                   LValueBaseInfo *BaseInfo = nullptr,
+                                   TBAAAccessInfo *TBAAInfo = nullptr);
+
+  /// If \p E references a parameter with pass_object_size info or a constant
+  /// array size modifier, emit the object size divided by the size of \p EltTy.
+  /// Otherwise return null.
+  llvm::Value *LoadPassedObjectSize(const Expr *E, QualType EltTy);
+
+  void EmitSanitizerStatReport(llvm::SanitizerStatKind SSK);
+
+  struct MultiVersionResolverOption {
+    llvm::Function *Function;
+    FunctionDecl *FD;
+    struct Conds {
+      StringRef Architecture;
+      llvm::SmallVector<StringRef, 8> Features;
+
+      Conds(StringRef Arch, ArrayRef<StringRef> Feats)
+          : Architecture(Arch), Features(Feats.begin(), Feats.end()) {}
+    } Conditions;
+
+    MultiVersionResolverOption(llvm::Function *F, StringRef Arch,
+                               ArrayRef<StringRef> Feats)
+        : Function(F), Conditions(Arch, Feats) {}
+  };
+
+  // Emits the body of a multiversion function's resolver. Assumes that the
+  // options are already sorted in the proper order, with the 'default' option
+  // last (if it exists).
+  void EmitMultiVersionResolver(llvm::Function *Resolver,
+                                ArrayRef<MultiVersionResolverOption> Options);
+
+  static uint64_t GetX86CpuSupportsMask(ArrayRef<StringRef> FeatureStrs);
+
+private:
+  QualType getVarArgType(const Expr *Arg);
+
+  void EmitDeclMetadata();
+
+  BlockByrefHelpers *buildByrefHelpers(llvm::StructType &byrefType,
+                                  const AutoVarEmission &emission);
+
+  void AddObjCARCExceptionMetadata(llvm::Instruction *Inst);
+
+  llvm::Value *GetValueForARMHint(unsigned BuiltinID);
+  llvm::Value *EmitX86CpuIs(const CallExpr *E);
+  llvm::Value *EmitX86CpuIs(StringRef CPUStr);
+  llvm::Value *EmitX86CpuSupports(const CallExpr *E);
+  llvm::Value *EmitX86CpuSupports(ArrayRef<StringRef> FeatureStrs);
+  llvm::Value *EmitX86CpuSupports(uint64_t Mask);
+  llvm::Value *EmitX86CpuInit();
+  llvm::Value *FormResolverCondition(const MultiVersionResolverOption &RO);
+};
+
+inline DominatingLLVMValue::saved_type
+DominatingLLVMValue::save(CodeGenFunction &CGF, llvm::Value *value) {
+  if (!needsSaving(value)) return saved_type(value, false);
+
+  // Otherwise, we need an alloca.
+  auto align = CharUnits::fromQuantity(
+            CGF.CGM.getDataLayout().getPrefTypeAlignment(value->getType()));
+  Address alloca =
+    CGF.CreateTempAlloca(value->getType(), align, "cond-cleanup.save");
+  CGF.Builder.CreateStore(value, alloca);
+
+  return saved_type(alloca.getPointer(), true);
+}
+
+inline llvm::Value *DominatingLLVMValue::restore(CodeGenFunction &CGF,
+                                                 saved_type value) {
+  // If the value says it wasn't saved, trust that it's still dominating.
+  if (!value.getInt()) return value.getPointer();
+
+  // Otherwise, it should be an alloca instruction, as set up in save().
+  auto alloca = cast<llvm::AllocaInst>(value.getPointer());
+  return CGF.Builder.CreateAlignedLoad(alloca, alloca->getAlignment());
+}
+
+}  // end namespace CodeGen
+}  // end namespace clang
+
+#endif