1 files changed, 0 insertions, 1506 deletions

diff --git a/contrib/llvm/tools/clang/lib/CodeGen/CodeGenModule.h b/contrib/llvm/tools/clang/lib/CodeGen/CodeGenModule.h
deleted file mode 100644
index 95964afed4ec..000000000000
--- a/contrib/llvm/tools/clang/lib/CodeGen/CodeGenModule.h
+++ /dev/null
@@ -1,1506 +0,0 @@
-//===--- CodeGenModule.h - Per-Module 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-translation-unit state used for llvm translation.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_LIB_CODEGEN_CODEGENMODULE_H
-#define LLVM_CLANG_LIB_CODEGEN_CODEGENMODULE_H
-
-#include "CGVTables.h"
-#include "CodeGenTypeCache.h"
-#include "CodeGenTypes.h"
-#include "SanitizerMetadata.h"
-#include "clang/AST/Attr.h"
-#include "clang/AST/DeclCXX.h"
-#include "clang/AST/DeclObjC.h"
-#include "clang/AST/DeclOpenMP.h"
-#include "clang/AST/GlobalDecl.h"
-#include "clang/AST/Mangle.h"
-#include "clang/Basic/ABI.h"
-#include "clang/Basic/LangOptions.h"
-#include "clang/Basic/Module.h"
-#include "clang/Basic/SanitizerBlacklist.h"
-#include "clang/Basic/XRayLists.h"
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/SetVector.h"
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/IR/Module.h"
-#include "llvm/IR/ValueHandle.h"
-#include "llvm/Transforms/Utils/SanitizerStats.h"
-
-namespace llvm {
-class Module;
-class Constant;
-class ConstantInt;
-class Function;
-class GlobalValue;
-class DataLayout;
-class FunctionType;
-class LLVMContext;
-class IndexedInstrProfReader;
-}
-
-namespace clang {
-class ASTContext;
-class AtomicType;
-class FunctionDecl;
-class IdentifierInfo;
-class ObjCMethodDecl;
-class ObjCImplementationDecl;
-class ObjCCategoryImplDecl;
-class ObjCProtocolDecl;
-class ObjCEncodeExpr;
-class BlockExpr;
-class CharUnits;
-class Decl;
-class Expr;
-class Stmt;
-class InitListExpr;
-class StringLiteral;
-class NamedDecl;
-class ValueDecl;
-class VarDecl;
-class LangOptions;
-class CodeGenOptions;
-class HeaderSearchOptions;
-class PreprocessorOptions;
-class DiagnosticsEngine;
-class AnnotateAttr;
-class CXXDestructorDecl;
-class Module;
-class CoverageSourceInfo;
-
-namespace CodeGen {
-
-class CallArgList;
-class CodeGenFunction;
-class CodeGenTBAA;
-class CGCXXABI;
-class CGDebugInfo;
-class CGObjCRuntime;
-class CGOpenCLRuntime;
-class CGOpenMPRuntime;
-class CGCUDARuntime;
-class BlockFieldFlags;
-class FunctionArgList;
-class CoverageMappingModuleGen;
-class TargetCodeGenInfo;
-
-enum ForDefinition_t : bool {
-  NotForDefinition = false,
-  ForDefinition = true
-};
-
-struct OrderGlobalInits {
-  unsigned int priority;
-  unsigned int lex_order;
-  OrderGlobalInits(unsigned int p, unsigned int l)
-      : priority(p), lex_order(l) {}
-
-  bool operator==(const OrderGlobalInits &RHS) const {
-    return priority == RHS.priority && lex_order == RHS.lex_order;
-  }
-
-  bool operator<(const OrderGlobalInits &RHS) const {
-    return std::tie(priority, lex_order) <
-           std::tie(RHS.priority, RHS.lex_order);
-  }
-};
-
-struct ObjCEntrypoints {
-  ObjCEntrypoints() { memset(this, 0, sizeof(*this)); }
-
-  /// void objc_alloc(id);
-  llvm::FunctionCallee objc_alloc;
-
-  /// void objc_allocWithZone(id);
-  llvm::FunctionCallee objc_allocWithZone;
-
-  /// void objc_alloc_init(id);
-  llvm::FunctionCallee objc_alloc_init;
-
-  /// void objc_autoreleasePoolPop(void*);
-  llvm::FunctionCallee objc_autoreleasePoolPop;
-
-  /// void objc_autoreleasePoolPop(void*);
-  /// Note this method is used when we are using exception handling
-  llvm::FunctionCallee objc_autoreleasePoolPopInvoke;
-
-  /// void *objc_autoreleasePoolPush(void);
-  llvm::Function *objc_autoreleasePoolPush;
-
-  /// id objc_autorelease(id);
-  llvm::Function *objc_autorelease;
-
-  /// id objc_autorelease(id);
-  /// Note this is the runtime method not the intrinsic.
-  llvm::FunctionCallee objc_autoreleaseRuntimeFunction;
-
-  /// id objc_autoreleaseReturnValue(id);
-  llvm::Function *objc_autoreleaseReturnValue;
-
-  /// void objc_copyWeak(id *dest, id *src);
-  llvm::Function *objc_copyWeak;
-
-  /// void objc_destroyWeak(id*);
-  llvm::Function *objc_destroyWeak;
-
-  /// id objc_initWeak(id*, id);
-  llvm::Function *objc_initWeak;
-
-  /// id objc_loadWeak(id*);
-  llvm::Function *objc_loadWeak;
-
-  /// id objc_loadWeakRetained(id*);
-  llvm::Function *objc_loadWeakRetained;
-
-  /// void objc_moveWeak(id *dest, id *src);
-  llvm::Function *objc_moveWeak;
-
-  /// id objc_retain(id);
-  llvm::Function *objc_retain;
-
-  /// id objc_retain(id);
-  /// Note this is the runtime method not the intrinsic.
-  llvm::FunctionCallee objc_retainRuntimeFunction;
-
-  /// id objc_retainAutorelease(id);
-  llvm::Function *objc_retainAutorelease;
-
-  /// id objc_retainAutoreleaseReturnValue(id);
-  llvm::Function *objc_retainAutoreleaseReturnValue;
-
-  /// id objc_retainAutoreleasedReturnValue(id);
-  llvm::Function *objc_retainAutoreleasedReturnValue;
-
-  /// id objc_retainBlock(id);
-  llvm::Function *objc_retainBlock;
-
-  /// void objc_release(id);
-  llvm::Function *objc_release;
-
-  /// void objc_release(id);
-  /// Note this is the runtime method not the intrinsic.
-  llvm::FunctionCallee objc_releaseRuntimeFunction;
-
-  /// void objc_storeStrong(id*, id);
-  llvm::Function *objc_storeStrong;
-
-  /// id objc_storeWeak(id*, id);
-  llvm::Function *objc_storeWeak;
-
-  /// id objc_unsafeClaimAutoreleasedReturnValue(id);
-  llvm::Function *objc_unsafeClaimAutoreleasedReturnValue;
-
-  /// A void(void) inline asm to use to mark that the return value of
-  /// a call will be immediately retain.
-  llvm::InlineAsm *retainAutoreleasedReturnValueMarker;
-
-  /// void clang.arc.use(...);
-  llvm::Function *clang_arc_use;
-};
-
-/// This class records statistics on instrumentation based profiling.
-class InstrProfStats {
-  uint32_t VisitedInMainFile;
-  uint32_t MissingInMainFile;
-  uint32_t Visited;
-  uint32_t Missing;
-  uint32_t Mismatched;
-
-public:
-  InstrProfStats()
-      : VisitedInMainFile(0), MissingInMainFile(0), Visited(0), Missing(0),
-        Mismatched(0) {}
-  /// Record that we've visited a function and whether or not that function was
-  /// in the main source file.
-  void addVisited(bool MainFile) {
-    if (MainFile)
-      ++VisitedInMainFile;
-    ++Visited;
-  }
-  /// Record that a function we've visited has no profile data.
-  void addMissing(bool MainFile) {
-    if (MainFile)
-      ++MissingInMainFile;
-    ++Missing;
-  }
-  /// Record that a function we've visited has mismatched profile data.
-  void addMismatched(bool MainFile) { ++Mismatched; }
-  /// Whether or not the stats we've gathered indicate any potential problems.
-  bool hasDiagnostics() { return Missing || Mismatched; }
-  /// Report potential problems we've found to \c Diags.
-  void reportDiagnostics(DiagnosticsEngine &Diags, StringRef MainFile);
-};
-
-/// A pair of helper functions for a __block variable.
-class BlockByrefHelpers : public llvm::FoldingSetNode {
-  // MSVC requires this type to be complete in order to process this
-  // header.
-public:
-  llvm::Constant *CopyHelper;
-  llvm::Constant *DisposeHelper;
-
-  /// The alignment of the field.  This is important because
-  /// different offsets to the field within the byref struct need to
-  /// have different helper functions.
-  CharUnits Alignment;
-
-  BlockByrefHelpers(CharUnits alignment)
-      : CopyHelper(nullptr), DisposeHelper(nullptr), Alignment(alignment) {}
-  BlockByrefHelpers(const BlockByrefHelpers &) = default;
-  virtual ~BlockByrefHelpers();
-
-  void Profile(llvm::FoldingSetNodeID &id) const {
-    id.AddInteger(Alignment.getQuantity());
-    profileImpl(id);
-  }
-  virtual void profileImpl(llvm::FoldingSetNodeID &id) const = 0;
-
-  virtual bool needsCopy() const { return true; }
-  virtual void emitCopy(CodeGenFunction &CGF, Address dest, Address src) = 0;
-
-  virtual bool needsDispose() const { return true; }
-  virtual void emitDispose(CodeGenFunction &CGF, Address field) = 0;
-};
-
-/// This class organizes the cross-function state that is used while generating
-/// LLVM code.
-class CodeGenModule : public CodeGenTypeCache {
-  CodeGenModule(const CodeGenModule &) = delete;
-  void operator=(const CodeGenModule &) = delete;
-
-public:
-  struct Structor {
-    Structor() : Priority(0), Initializer(nullptr), AssociatedData(nullptr) {}
-    Structor(int Priority, llvm::Constant *Initializer,
-             llvm::Constant *AssociatedData)
-        : Priority(Priority), Initializer(Initializer),
-          AssociatedData(AssociatedData) {}
-    int Priority;
-    llvm::Constant *Initializer;
-    llvm::Constant *AssociatedData;
-  };
-
-  typedef std::vector<Structor> CtorList;
-
-private:
-  ASTContext &Context;
-  const LangOptions &LangOpts;
-  const HeaderSearchOptions &HeaderSearchOpts; // Only used for debug info.
-  const PreprocessorOptions &PreprocessorOpts; // Only used for debug info.
-  const CodeGenOptions &CodeGenOpts;
-  llvm::Module &TheModule;
-  DiagnosticsEngine &Diags;
-  const TargetInfo &Target;
-  std::unique_ptr<CGCXXABI> ABI;
-  llvm::LLVMContext &VMContext;
-
-  std::unique_ptr<CodeGenTBAA> TBAA;
-
-  mutable std::unique_ptr<TargetCodeGenInfo> TheTargetCodeGenInfo;
-
-  // This should not be moved earlier, since its initialization depends on some
-  // of the previous reference members being already initialized and also checks
-  // if TheTargetCodeGenInfo is NULL
-  CodeGenTypes Types;
-
-  /// Holds information about C++ vtables.
-  CodeGenVTables VTables;
-
-  std::unique_ptr<CGObjCRuntime> ObjCRuntime;
-  std::unique_ptr<CGOpenCLRuntime> OpenCLRuntime;
-  std::unique_ptr<CGOpenMPRuntime> OpenMPRuntime;
-  std::unique_ptr<CGCUDARuntime> CUDARuntime;
-  std::unique_ptr<CGDebugInfo> DebugInfo;
-  std::unique_ptr<ObjCEntrypoints> ObjCData;
-  llvm::MDNode *NoObjCARCExceptionsMetadata = nullptr;
-  std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader;
-  InstrProfStats PGOStats;
-  std::unique_ptr<llvm::SanitizerStatReport> SanStats;
-
-  // A set of references that have only been seen via a weakref so far. This is
-  // used to remove the weak of the reference if we ever see a direct reference
-  // or a definition.
-  llvm::SmallPtrSet<llvm::GlobalValue*, 10> WeakRefReferences;
-
-  /// This contains all the decls which have definitions but/ which are deferred
-  /// for emission and therefore should only be output if they are actually
-  /// used. If a decl is in this, then it is known to have not been referenced
-  /// yet.
-  std::map<StringRef, GlobalDecl> DeferredDecls;
-
-  /// This is a list of deferred decls which we have seen that *are* actually
-  /// referenced. These get code generated when the module is done.
-  std::vector<GlobalDecl> DeferredDeclsToEmit;
-  void addDeferredDeclToEmit(GlobalDecl GD) {
-    DeferredDeclsToEmit.emplace_back(GD);
-  }
-
-  /// List of alias we have emitted. Used to make sure that what they point to
-  /// is defined once we get to the end of the of the translation unit.
-  std::vector<GlobalDecl> Aliases;
-
-  /// List of multiversion functions that have to be emitted.  Used to make sure
-  /// we properly emit the iFunc.
-  std::vector<GlobalDecl> MultiVersionFuncs;
-
-  typedef llvm::StringMap<llvm::TrackingVH<llvm::Constant> > ReplacementsTy;
-  ReplacementsTy Replacements;
-
-  /// List of global values to be replaced with something else. Used when we
-  /// want to replace a GlobalValue but can't identify it by its mangled name
-  /// anymore (because the name is already taken).
-  llvm::SmallVector<std::pair<llvm::GlobalValue *, llvm::Constant *>, 8>
-    GlobalValReplacements;
-
-  /// Variables for which we've emitted globals containing their constant
-  /// values along with the corresponding globals, for opportunistic reuse.
-  llvm::DenseMap<const VarDecl*, llvm::GlobalVariable*> InitializerConstants;
-
-  /// Set of global decls for which we already diagnosed mangled name conflict.
-  /// Required to not issue a warning (on a mangling conflict) multiple times
-  /// for the same decl.
-  llvm::DenseSet<GlobalDecl> DiagnosedConflictingDefinitions;
-
-  /// A queue of (optional) vtables to consider emitting.
-  std::vector<const CXXRecordDecl*> DeferredVTables;
-
-  /// A queue of (optional) vtables that may be emitted opportunistically.
-  std::vector<const CXXRecordDecl *> OpportunisticVTables;
-
-  /// List of global values which are required to be present in the object file;
-  /// bitcast to i8*. This is used for forcing visibility of symbols which may
-  /// otherwise be optimized out.
-  std::vector<llvm::WeakTrackingVH> LLVMUsed;
-  std::vector<llvm::WeakTrackingVH> LLVMCompilerUsed;
-
-  /// Store the list of global constructors and their respective priorities to
-  /// be emitted when the translation unit is complete.
-  CtorList GlobalCtors;
-
-  /// Store the list of global destructors and their respective priorities to be
-  /// emitted when the translation unit is complete.
-  CtorList GlobalDtors;
-
-  /// An ordered map of canonical GlobalDecls to their mangled names.
-  llvm::MapVector<GlobalDecl, StringRef> MangledDeclNames;
-  llvm::StringMap<GlobalDecl, llvm::BumpPtrAllocator> Manglings;
-
-  // An ordered map of canonical GlobalDecls paired with the cpu-index for
-  // cpu-specific name manglings.
-  llvm::MapVector<std::pair<GlobalDecl, unsigned>, StringRef>
-      CPUSpecificMangledDeclNames;
-  llvm::StringMap<std::pair<GlobalDecl, unsigned>, llvm::BumpPtrAllocator>
-      CPUSpecificManglings;
-
-  /// Global annotations.
-  std::vector<llvm::Constant*> Annotations;
-
-  /// Map used to get unique annotation strings.
-  llvm::StringMap<llvm::Constant*> AnnotationStrings;
-
-  llvm::StringMap<llvm::GlobalVariable *> CFConstantStringMap;
-
-  llvm::DenseMap<llvm::Constant *, llvm::GlobalVariable *> ConstantStringMap;
-  llvm::DenseMap<const Decl*, llvm::Constant *> StaticLocalDeclMap;
-  llvm::DenseMap<const Decl*, llvm::GlobalVariable*> StaticLocalDeclGuardMap;
-  llvm::DenseMap<const Expr*, llvm::Constant *> MaterializedGlobalTemporaryMap;
-
-  llvm::DenseMap<QualType, llvm::Constant *> AtomicSetterHelperFnMap;
-  llvm::DenseMap<QualType, llvm::Constant *> AtomicGetterHelperFnMap;
-
-  /// Map used to get unique type descriptor constants for sanitizers.
-  llvm::DenseMap<QualType, llvm::Constant *> TypeDescriptorMap;
-
-  /// Map used to track internal linkage functions declared within
-  /// extern "C" regions.
-  typedef llvm::MapVector<IdentifierInfo *,
-                          llvm::GlobalValue *> StaticExternCMap;
-  StaticExternCMap StaticExternCValues;
-
-  /// thread_local variables defined or used in this TU.
-  std::vector<const VarDecl *> CXXThreadLocals;
-
-  /// thread_local variables with initializers that need to run
-  /// before any thread_local variable in this TU is odr-used.
-  std::vector<llvm::Function *> CXXThreadLocalInits;
-  std::vector<const VarDecl *> CXXThreadLocalInitVars;
-
-  /// Global variables with initializers that need to run before main.
-  std::vector<llvm::Function *> CXXGlobalInits;
-
-  /// When a C++ decl with an initializer is deferred, null is
-  /// appended to CXXGlobalInits, and the index of that null is placed
-  /// here so that the initializer will be performed in the correct
-  /// order. Once the decl is emitted, the index is replaced with ~0U to ensure
-  /// that we don't re-emit the initializer.
-  llvm::DenseMap<const Decl*, unsigned> DelayedCXXInitPosition;
-
-  typedef std::pair<OrderGlobalInits, llvm::Function*> GlobalInitData;
-
-  struct GlobalInitPriorityCmp {
-    bool operator()(const GlobalInitData &LHS,
-                    const GlobalInitData &RHS) const {
-      return LHS.first.priority < RHS.first.priority;
-    }
-  };
-
-  /// Global variables with initializers whose order of initialization is set by
-  /// init_priority attribute.
-  SmallVector<GlobalInitData, 8> PrioritizedCXXGlobalInits;
-
-  /// Global destructor functions and arguments that need to run on termination.
-  std::vector<
-      std::tuple<llvm::FunctionType *, llvm::WeakTrackingVH, llvm::Constant *>>
-      CXXGlobalDtors;
-
-  /// The complete set of modules that has been imported.
-  llvm::SetVector<clang::Module *> ImportedModules;
-
-  /// The set of modules for which the module initializers
-  /// have been emitted.
-  llvm::SmallPtrSet<clang::Module *, 16> EmittedModuleInitializers;
-
-  /// A vector of metadata strings for linker options.
-  SmallVector<llvm::MDNode *, 16> LinkerOptionsMetadata;
-
-  /// A vector of metadata strings for dependent libraries for ELF.
-  SmallVector<llvm::MDNode *, 16> ELFDependentLibraries;
-
-  /// @name Cache for Objective-C runtime types
-  /// @{
-
-  /// Cached reference to the class for constant strings. This value has type
-  /// int * but is actually an Obj-C class pointer.
-  llvm::WeakTrackingVH CFConstantStringClassRef;
-
-  /// The type used to describe the state of a fast enumeration in
-  /// Objective-C's for..in loop.
-  QualType ObjCFastEnumerationStateType;
-
-  /// @}
-
-  /// Lazily create the Objective-C runtime
-  void createObjCRuntime();
-
-  void createOpenCLRuntime();
-  void createOpenMPRuntime();
-  void createCUDARuntime();
-
-  bool isTriviallyRecursive(const FunctionDecl *F);
-  bool shouldEmitFunction(GlobalDecl GD);
-  bool shouldOpportunisticallyEmitVTables();
-  /// Map used to be sure we don't emit the same CompoundLiteral twice.
-  llvm::DenseMap<const CompoundLiteralExpr *, llvm::GlobalVariable *>
-      EmittedCompoundLiterals;
-
-  /// Map of the global blocks we've emitted, so that we don't have to re-emit
-  /// them if the constexpr evaluator gets aggressive.
-  llvm::DenseMap<const BlockExpr *, llvm::Constant *> EmittedGlobalBlocks;
-
-  /// @name Cache for Blocks Runtime Globals
-  /// @{
-
-  llvm::Constant *NSConcreteGlobalBlock = nullptr;
-  llvm::Constant *NSConcreteStackBlock = nullptr;
-
-  llvm::FunctionCallee BlockObjectAssign = nullptr;
-  llvm::FunctionCallee BlockObjectDispose = nullptr;
-
-  llvm::Type *BlockDescriptorType = nullptr;
-  llvm::Type *GenericBlockLiteralType = nullptr;
-
-  struct {
-    int GlobalUniqueCount;
-  } Block;
-
-  /// void @llvm.lifetime.start(i64 %size, i8* nocapture <ptr>)
-  llvm::Function *LifetimeStartFn = nullptr;
-
-  /// void @llvm.lifetime.end(i64 %size, i8* nocapture <ptr>)
-  llvm::Function *LifetimeEndFn = nullptr;
-
-  GlobalDecl initializedGlobalDecl;
-
-  std::unique_ptr<SanitizerMetadata> SanitizerMD;
-
-  /// @}
-
-  llvm::MapVector<const Decl *, bool> DeferredEmptyCoverageMappingDecls;
-
-  std::unique_ptr<CoverageMappingModuleGen> CoverageMapping;
-
-  /// Mapping from canonical types to their metadata identifiers. We need to
-  /// maintain this mapping because identifiers may be formed from distinct
-  /// MDNodes.
-  typedef llvm::DenseMap<QualType, llvm::Metadata *> MetadataTypeMap;
-  MetadataTypeMap MetadataIdMap;
-  MetadataTypeMap VirtualMetadataIdMap;
-  MetadataTypeMap GeneralizedMetadataIdMap;
-
-public:
-  CodeGenModule(ASTContext &C, const HeaderSearchOptions &headersearchopts,
-                const PreprocessorOptions &ppopts,
-                const CodeGenOptions &CodeGenOpts, llvm::Module &M,
-                DiagnosticsEngine &Diags,
-                CoverageSourceInfo *CoverageInfo = nullptr);
-
-  ~CodeGenModule();
-
-  void clear();
-
-  /// Finalize LLVM code generation.
-  void Release();
-
-  /// Return true if we should emit location information for expressions.
-  bool getExpressionLocationsEnabled() const;
-
-  /// Return a reference to the configured Objective-C runtime.
-  CGObjCRuntime &getObjCRuntime() {
-    if (!ObjCRuntime) createObjCRuntime();
-    return *ObjCRuntime;
-  }
-
-  /// Return true iff an Objective-C runtime has been configured.
-  bool hasObjCRuntime() { return !!ObjCRuntime; }
-
-  /// Return a reference to the configured OpenCL runtime.
-  CGOpenCLRuntime &getOpenCLRuntime() {
-    assert(OpenCLRuntime != nullptr);
-    return *OpenCLRuntime;
-  }
-
-  /// Return a reference to the configured OpenMP runtime.
-  CGOpenMPRuntime &getOpenMPRuntime() {
-    assert(OpenMPRuntime != nullptr);
-    return *OpenMPRuntime;
-  }
-
-  /// Return a reference to the configured CUDA runtime.
-  CGCUDARuntime &getCUDARuntime() {
-    assert(CUDARuntime != nullptr);
-    return *CUDARuntime;
-  }
-
-  ObjCEntrypoints &getObjCEntrypoints() const {
-    assert(ObjCData != nullptr);
-    return *ObjCData;
-  }
-
-  // Version checking function, used to implement ObjC's @available:
-  // i32 @__isOSVersionAtLeast(i32, i32, i32)
-  llvm::FunctionCallee IsOSVersionAtLeastFn = nullptr;
-
-  InstrProfStats &getPGOStats() { return PGOStats; }
-  llvm::IndexedInstrProfReader *getPGOReader() const { return PGOReader.get(); }
-
-  CoverageMappingModuleGen *getCoverageMapping() const {
-    return CoverageMapping.get();
-  }
-
-  llvm::Constant *getStaticLocalDeclAddress(const VarDecl *D) {
-    return StaticLocalDeclMap[D];
-  }
-  void setStaticLocalDeclAddress(const VarDecl *D,
-                                 llvm::Constant *C) {
-    StaticLocalDeclMap[D] = C;
-  }
-
-  llvm::Constant *
-  getOrCreateStaticVarDecl(const VarDecl &D,
-                           llvm::GlobalValue::LinkageTypes Linkage);
-
-  llvm::GlobalVariable *getStaticLocalDeclGuardAddress(const VarDecl *D) {
-    return StaticLocalDeclGuardMap[D];
-  }
-  void setStaticLocalDeclGuardAddress(const VarDecl *D,
-                                      llvm::GlobalVariable *C) {
-    StaticLocalDeclGuardMap[D] = C;
-  }
-
-  Address createUnnamedGlobalFrom(const VarDecl &D, llvm::Constant *Constant,
-                                  CharUnits Align);
-
-  bool lookupRepresentativeDecl(StringRef MangledName,
-                                GlobalDecl &Result) const;
-
-  llvm::Constant *getAtomicSetterHelperFnMap(QualType Ty) {
-    return AtomicSetterHelperFnMap[Ty];
-  }
-  void setAtomicSetterHelperFnMap(QualType Ty,
-                            llvm::Constant *Fn) {
-    AtomicSetterHelperFnMap[Ty] = Fn;
-  }
-
-  llvm::Constant *getAtomicGetterHelperFnMap(QualType Ty) {
-    return AtomicGetterHelperFnMap[Ty];
-  }
-  void setAtomicGetterHelperFnMap(QualType Ty,
-                            llvm::Constant *Fn) {
-    AtomicGetterHelperFnMap[Ty] = Fn;
-  }
-
-  llvm::Constant *getTypeDescriptorFromMap(QualType Ty) {
-    return TypeDescriptorMap[Ty];
-  }
-  void setTypeDescriptorInMap(QualType Ty, llvm::Constant *C) {
-    TypeDescriptorMap[Ty] = C;
-  }
-
-  CGDebugInfo *getModuleDebugInfo() { return DebugInfo.get(); }
-
-  llvm::MDNode *getNoObjCARCExceptionsMetadata() {
-    if (!NoObjCARCExceptionsMetadata)
-      NoObjCARCExceptionsMetadata = llvm::MDNode::get(getLLVMContext(), None);
-    return NoObjCARCExceptionsMetadata;
-  }
-
-  ASTContext &getContext() const { return Context; }
-  const LangOptions &getLangOpts() const { return LangOpts; }
-  const HeaderSearchOptions &getHeaderSearchOpts()
-    const { return HeaderSearchOpts; }
-  const PreprocessorOptions &getPreprocessorOpts()
-    const { return PreprocessorOpts; }
-  const CodeGenOptions &getCodeGenOpts() const { return CodeGenOpts; }
-  llvm::Module &getModule() const { return TheModule; }
-  DiagnosticsEngine &getDiags() const { return Diags; }
-  const llvm::DataLayout &getDataLayout() const {
-    return TheModule.getDataLayout();
-  }
-  const TargetInfo &getTarget() const { return Target; }
-  const llvm::Triple &getTriple() const { return Target.getTriple(); }
-  bool supportsCOMDAT() const;
-  void maybeSetTrivialComdat(const Decl &D, llvm::GlobalObject &GO);
-
-  CGCXXABI &getCXXABI() const { return *ABI; }
-  llvm::LLVMContext &getLLVMContext() { return VMContext; }
-
-  bool shouldUseTBAA() const { return TBAA != nullptr; }
-
-  const TargetCodeGenInfo &getTargetCodeGenInfo();
-
-  CodeGenTypes &getTypes() { return Types; }
-
-  CodeGenVTables &getVTables() { return VTables; }
-
-  ItaniumVTableContext &getItaniumVTableContext() {
-    return VTables.getItaniumVTableContext();
-  }
-
-  MicrosoftVTableContext &getMicrosoftVTableContext() {
-    return VTables.getMicrosoftVTableContext();
-  }
-
-  CtorList &getGlobalCtors() { return GlobalCtors; }
-  CtorList &getGlobalDtors() { return GlobalDtors; }
-
-  /// getTBAATypeInfo - Get metadata used to describe accesses to objects of
-  /// the given type.
-  llvm::MDNode *getTBAATypeInfo(QualType QTy);
-
-  /// getTBAAAccessInfo - Get TBAA information that describes an access to
-  /// an object of the given type.
-  TBAAAccessInfo getTBAAAccessInfo(QualType AccessType);
-
-  /// getTBAAVTablePtrAccessInfo - Get the TBAA information that describes an
-  /// access to a virtual table pointer.
-  TBAAAccessInfo getTBAAVTablePtrAccessInfo(llvm::Type *VTablePtrType);
-
-  llvm::MDNode *getTBAAStructInfo(QualType QTy);
-
-  /// getTBAABaseTypeInfo - Get metadata that describes the given base access
-  /// type. Return null if the type is not suitable for use in TBAA access tags.
-  llvm::MDNode *getTBAABaseTypeInfo(QualType QTy);
-
-  /// getTBAAAccessTagInfo - Get TBAA tag for a given memory access.
-  llvm::MDNode *getTBAAAccessTagInfo(TBAAAccessInfo Info);
-
-  /// mergeTBAAInfoForCast - Get merged TBAA information for the purposes of
-  /// type casts.
-  TBAAAccessInfo mergeTBAAInfoForCast(TBAAAccessInfo SourceInfo,
-                                      TBAAAccessInfo TargetInfo);
-
-  /// mergeTBAAInfoForConditionalOperator - Get merged TBAA information for the
-  /// purposes of conditional operator.
-  TBAAAccessInfo mergeTBAAInfoForConditionalOperator(TBAAAccessInfo InfoA,
-                                                     TBAAAccessInfo InfoB);
-
-  /// mergeTBAAInfoForMemoryTransfer - Get merged TBAA information for the
-  /// purposes of memory transfer calls.
-  TBAAAccessInfo mergeTBAAInfoForMemoryTransfer(TBAAAccessInfo DestInfo,
-                                                TBAAAccessInfo SrcInfo);
-
-  /// getTBAAInfoForSubobject - Get TBAA information for an access with a given
-  /// base lvalue.
-  TBAAAccessInfo getTBAAInfoForSubobject(LValue Base, QualType AccessType) {
-    if (Base.getTBAAInfo().isMayAlias())
-      return TBAAAccessInfo::getMayAliasInfo();
-    return getTBAAAccessInfo(AccessType);
-  }
-
-  bool isTypeConstant(QualType QTy, bool ExcludeCtorDtor);
-
-  bool isPaddedAtomicType(QualType type);
-  bool isPaddedAtomicType(const AtomicType *type);
-
-  /// DecorateInstructionWithTBAA - Decorate the instruction with a TBAA tag.
-  void DecorateInstructionWithTBAA(llvm::Instruction *Inst,
-                                   TBAAAccessInfo TBAAInfo);
-
-  /// Adds !invariant.barrier !tag to instruction
-  void DecorateInstructionWithInvariantGroup(llvm::Instruction *I,
-                                             const CXXRecordDecl *RD);
-
-  /// Emit the given number of characters as a value of type size_t.
-  llvm::ConstantInt *getSize(CharUnits numChars);
-
-  /// Set the visibility for the given LLVM GlobalValue.
-  void setGlobalVisibility(llvm::GlobalValue *GV, const NamedDecl *D) const;
-
-  void setDSOLocal(llvm::GlobalValue *GV) const;
-
-  void setDLLImportDLLExport(llvm::GlobalValue *GV, GlobalDecl D) const;
-  void setDLLImportDLLExport(llvm::GlobalValue *GV, const NamedDecl *D) const;
-  /// Set visibility, dllimport/dllexport and dso_local.
-  /// This must be called after dllimport/dllexport is set.
-  void setGVProperties(llvm::GlobalValue *GV, GlobalDecl GD) const;
-  void setGVProperties(llvm::GlobalValue *GV, const NamedDecl *D) const;
-
-  void setGVPropertiesAux(llvm::GlobalValue *GV, const NamedDecl *D) const;
-
-  /// Set the TLS mode for the given LLVM GlobalValue for the thread-local
-  /// variable declaration D.
-  void setTLSMode(llvm::GlobalValue *GV, const VarDecl &D) const;
-
-  static llvm::GlobalValue::VisibilityTypes GetLLVMVisibility(Visibility V) {
-    switch (V) {
-    case DefaultVisibility:   return llvm::GlobalValue::DefaultVisibility;
-    case HiddenVisibility:    return llvm::GlobalValue::HiddenVisibility;
-    case ProtectedVisibility: return llvm::GlobalValue::ProtectedVisibility;
-    }
-    llvm_unreachable("unknown visibility!");
-  }
-
-  llvm::Constant *GetAddrOfGlobal(GlobalDecl GD,
-                                  ForDefinition_t IsForDefinition
-                                    = NotForDefinition);
-
-  /// Will return a global variable of the given type. If a variable with a
-  /// different type already exists then a new  variable with the right type
-  /// will be created and all uses of the old variable will be replaced with a
-  /// bitcast to the new variable.
-  llvm::GlobalVariable *
-  CreateOrReplaceCXXRuntimeVariable(StringRef Name, llvm::Type *Ty,
-                                    llvm::GlobalValue::LinkageTypes Linkage,
-                                    unsigned Alignment);
-
-  llvm::Function *
-  CreateGlobalInitOrDestructFunction(llvm::FunctionType *ty, const Twine &name,
-                                     const CGFunctionInfo &FI,
-                                     SourceLocation Loc = SourceLocation(),
-                                     bool TLS = false);
-
-  /// Return the AST address space of the underlying global variable for D, as
-  /// determined by its declaration. Normally this is the same as the address
-  /// space of D's type, but in CUDA, address spaces are associated with
-  /// declarations, not types. If D is nullptr, return the default address
-  /// space for global variable.
-  ///
-  /// For languages without explicit address spaces, if D has default address
-  /// space, target-specific global or constant address space may be returned.
-  LangAS GetGlobalVarAddressSpace(const VarDecl *D);
-
-  /// Return the llvm::Constant for the address of the given global variable.
-  /// If Ty is non-null and if the global doesn't exist, then it will be created
-  /// with the specified type instead of whatever the normal requested type
-  /// would be. If IsForDefinition is true, it is guaranteed that an actual
-  /// global with type Ty will be returned, not conversion of a variable with
-  /// the same mangled name but some other type.
-  llvm::Constant *GetAddrOfGlobalVar(const VarDecl *D,
-                                     llvm::Type *Ty = nullptr,
-                                     ForDefinition_t IsForDefinition
-                                       = NotForDefinition);
-
-  /// Return the AST address space of string literal, which is used to emit
-  /// the string literal as global variable in LLVM IR.
-  /// Note: This is not necessarily the address space of the string literal
-  /// in AST. For address space agnostic language, e.g. C++, string literal
-  /// in AST is always in default address space.
-  LangAS getStringLiteralAddressSpace() const;
-
-  /// Return the address of the given function. If Ty is non-null, then this
-  /// function will use the specified type if it has to create it.
-  llvm::Constant *GetAddrOfFunction(GlobalDecl GD, llvm::Type *Ty = nullptr,
-                                    bool ForVTable = false,
-                                    bool DontDefer = false,
-                                    ForDefinition_t IsForDefinition
-                                      = NotForDefinition);
-
-  /// Get the address of the RTTI descriptor for the given type.
-  llvm::Constant *GetAddrOfRTTIDescriptor(QualType Ty, bool ForEH = false);
-
-  /// Get the address of a uuid descriptor .
-  ConstantAddress GetAddrOfUuidDescriptor(const CXXUuidofExpr* E);
-
-  /// Get the address of the thunk for the given global decl.
-  llvm::Constant *GetAddrOfThunk(StringRef Name, llvm::Type *FnTy,
-                                 GlobalDecl GD);
-
-  /// Get a reference to the target of VD.
-  ConstantAddress GetWeakRefReference(const ValueDecl *VD);
-
-  /// Returns the assumed alignment of an opaque pointer to the given class.
-  CharUnits getClassPointerAlignment(const CXXRecordDecl *CD);
-
-  /// Returns the assumed alignment of a virtual base of a class.
-  CharUnits getVBaseAlignment(CharUnits DerivedAlign,
-                              const CXXRecordDecl *Derived,
-                              const CXXRecordDecl *VBase);
-
-  /// Given a class pointer with an actual known alignment, and the
-  /// expected alignment of an object at a dynamic offset w.r.t that
-  /// pointer, return the alignment to assume at the offset.
-  CharUnits getDynamicOffsetAlignment(CharUnits ActualAlign,
-                                      const CXXRecordDecl *Class,
-                                      CharUnits ExpectedTargetAlign);
-
-  CharUnits
-  computeNonVirtualBaseClassOffset(const CXXRecordDecl *DerivedClass,
-                                   CastExpr::path_const_iterator Start,
-                                   CastExpr::path_const_iterator End);
-
-  /// Returns the offset from a derived class to  a class. Returns null if the
-  /// offset is 0.
-  llvm::Constant *
-  GetNonVirtualBaseClassOffset(const CXXRecordDecl *ClassDecl,
-                               CastExpr::path_const_iterator PathBegin,
-                               CastExpr::path_const_iterator PathEnd);
-
-  llvm::FoldingSet<BlockByrefHelpers> ByrefHelpersCache;
-
-  /// Fetches the global unique block count.
-  int getUniqueBlockCount() { return ++Block.GlobalUniqueCount; }
-
-  /// Fetches the type of a generic block descriptor.
-  llvm::Type *getBlockDescriptorType();
-
-  /// The type of a generic block literal.
-  llvm::Type *getGenericBlockLiteralType();
-
-  /// Gets the address of a block which requires no captures.
-  llvm::Constant *GetAddrOfGlobalBlock(const BlockExpr *BE, StringRef Name);
-
-  /// Returns the address of a block which requires no caputres, or null if
-  /// we've yet to emit the block for BE.
-  llvm::Constant *getAddrOfGlobalBlockIfEmitted(const BlockExpr *BE) {
-    return EmittedGlobalBlocks.lookup(BE);
-  }
-
-  /// Notes that BE's global block is available via Addr. Asserts that BE
-  /// isn't already emitted.
-  void setAddrOfGlobalBlock(const BlockExpr *BE, llvm::Constant *Addr);
-
-  /// Return a pointer to a constant CFString object for the given string.
-  ConstantAddress GetAddrOfConstantCFString(const StringLiteral *Literal);
-
-  /// Return a pointer to a constant NSString object for the given string. Or a
-  /// user defined String object as defined via
-  /// -fconstant-string-class=class_name option.
-  ConstantAddress GetAddrOfConstantString(const StringLiteral *Literal);
-
-  /// Return a constant array for the given string.
-  llvm::Constant *GetConstantArrayFromStringLiteral(const StringLiteral *E);
-
-  /// Return a pointer to a constant array for the given string literal.
-  ConstantAddress
-  GetAddrOfConstantStringFromLiteral(const StringLiteral *S,
-                                     StringRef Name = ".str");
-
-  /// Return a pointer to a constant array for the given ObjCEncodeExpr node.
-  ConstantAddress
-  GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *);
-
-  /// Returns a pointer to a character array containing the literal and a
-  /// terminating '\0' character. The result has pointer to array type.
-  ///
-  /// \param GlobalName If provided, the name to use for the global (if one is
-  /// created).
-  ConstantAddress
-  GetAddrOfConstantCString(const std::string &Str,
-                           const char *GlobalName = nullptr);
-
-  /// Returns a pointer to a constant global variable for the given file-scope
-  /// compound literal expression.
-  ConstantAddress GetAddrOfConstantCompoundLiteral(const CompoundLiteralExpr*E);
-
-  /// If it's been emitted already, returns the GlobalVariable corresponding to
-  /// a compound literal. Otherwise, returns null.
-  llvm::GlobalVariable *
-  getAddrOfConstantCompoundLiteralIfEmitted(const CompoundLiteralExpr *E);
-
-  /// Notes that CLE's GlobalVariable is GV. Asserts that CLE isn't already
-  /// emitted.
-  void setAddrOfConstantCompoundLiteral(const CompoundLiteralExpr *CLE,
-                                        llvm::GlobalVariable *GV);
-
-  /// Returns a pointer to a global variable representing a temporary
-  /// with static or thread storage duration.
-  ConstantAddress GetAddrOfGlobalTemporary(const MaterializeTemporaryExpr *E,
-                                           const Expr *Inner);
-
-  /// Retrieve the record type that describes the state of an
-  /// Objective-C fast enumeration loop (for..in).
-  QualType getObjCFastEnumerationStateType();
-
-  // Produce code for this constructor/destructor. This method doesn't try
-  // to apply any ABI rules about which other constructors/destructors
-  // are needed or if they are alias to each other.
-  llvm::Function *codegenCXXStructor(GlobalDecl GD);
-
-  /// Return the address of the constructor/destructor of the given type.
-  llvm::Constant *
-  getAddrOfCXXStructor(GlobalDecl GD, const CGFunctionInfo *FnInfo = nullptr,
-                       llvm::FunctionType *FnType = nullptr,
-                       bool DontDefer = false,
-                       ForDefinition_t IsForDefinition = NotForDefinition) {
-    return cast<llvm::Constant>(getAddrAndTypeOfCXXStructor(GD, FnInfo, FnType,
-                                                            DontDefer,
-                                                            IsForDefinition)
-                                    .getCallee());
-  }
-
-  llvm::FunctionCallee getAddrAndTypeOfCXXStructor(
-      GlobalDecl GD, const CGFunctionInfo *FnInfo = nullptr,
-      llvm::FunctionType *FnType = nullptr, bool DontDefer = false,
-      ForDefinition_t IsForDefinition = NotForDefinition);
-
-  /// Given a builtin id for a function like "__builtin_fabsf", return a
-  /// Function* for "fabsf".
-  llvm::Constant *getBuiltinLibFunction(const FunctionDecl *FD,
-                                        unsigned BuiltinID);
-
-  llvm::Function *getIntrinsic(unsigned IID, ArrayRef<llvm::Type*> Tys = None);
-
-  /// Emit code for a single top level declaration.
-  void EmitTopLevelDecl(Decl *D);
-
-  /// Stored a deferred empty coverage mapping for an unused
-  /// and thus uninstrumented top level declaration.
-  void AddDeferredUnusedCoverageMapping(Decl *D);
-
-  /// Remove the deferred empty coverage mapping as this
-  /// declaration is actually instrumented.
-  void ClearUnusedCoverageMapping(const Decl *D);
-
-  /// Emit all the deferred coverage mappings
-  /// for the uninstrumented functions.
-  void EmitDeferredUnusedCoverageMappings();
-
-  /// Tell the consumer that this variable has been instantiated.
-  void HandleCXXStaticMemberVarInstantiation(VarDecl *VD);
-
-  /// If the declaration has internal linkage but is inside an
-  /// extern "C" linkage specification, prepare to emit an alias for it
-  /// to the expected name.
-  template<typename SomeDecl>
-  void MaybeHandleStaticInExternC(const SomeDecl *D, llvm::GlobalValue *GV);
-
-  /// Add a global to a list to be added to the llvm.used metadata.
-  void addUsedGlobal(llvm::GlobalValue *GV);
-
-  /// Add a global to a list to be added to the llvm.compiler.used metadata.
-  void addCompilerUsedGlobal(llvm::GlobalValue *GV);
-
-  /// Add a destructor and object to add to the C++ global destructor function.
-  void AddCXXDtorEntry(llvm::FunctionCallee DtorFn, llvm::Constant *Object) {
-    CXXGlobalDtors.emplace_back(DtorFn.getFunctionType(), DtorFn.getCallee(),
-                                Object);
-  }
-
-  /// Create or return a runtime function declaration with the specified type
-  /// and name.
-  llvm::FunctionCallee
-  CreateRuntimeFunction(llvm::FunctionType *Ty, StringRef Name,
-                        llvm::AttributeList ExtraAttrs = llvm::AttributeList(),
-                        bool Local = false);
-
-  /// Create a new runtime global variable with the specified type and name.
-  llvm::Constant *CreateRuntimeVariable(llvm::Type *Ty,
-                                        StringRef Name);
-
-  ///@name Custom Blocks Runtime Interfaces
-  ///@{
-
-  llvm::Constant *getNSConcreteGlobalBlock();
-  llvm::Constant *getNSConcreteStackBlock();
-  llvm::FunctionCallee getBlockObjectAssign();
-  llvm::FunctionCallee getBlockObjectDispose();
-
-  ///@}
-
-  llvm::Function *getLLVMLifetimeStartFn();
-  llvm::Function *getLLVMLifetimeEndFn();
-
-  // Make sure that this type is translated.
-  void UpdateCompletedType(const TagDecl *TD);
-
-  llvm::Constant *getMemberPointerConstant(const UnaryOperator *e);
-
-  /// Emit type info if type of an expression is a variably modified
-  /// type. Also emit proper debug info for cast types.
-  void EmitExplicitCastExprType(const ExplicitCastExpr *E,
-                                CodeGenFunction *CGF = nullptr);
-
-  /// Return the result of value-initializing the given type, i.e. a null
-  /// expression of the given type.  This is usually, but not always, an LLVM
-  /// null constant.
-  llvm::Constant *EmitNullConstant(QualType T);
-
-  /// Return a null constant appropriate for zero-initializing a base class with
-  /// the given type. This is usually, but not always, an LLVM null constant.
-  llvm::Constant *EmitNullConstantForBase(const CXXRecordDecl *Record);
-
-  /// Emit a general error that something can't be done.
-  void Error(SourceLocation loc, StringRef error);
-
-  /// Print out an error that codegen doesn't support the specified stmt yet.
-  void ErrorUnsupported(const Stmt *S, const char *Type);
-
-  /// Print out an error that codegen doesn't support the specified decl yet.
-  void ErrorUnsupported(const Decl *D, const char *Type);
-
-  /// Set the attributes on the LLVM function for the given decl and function
-  /// info. This applies attributes necessary for handling the ABI as well as
-  /// user specified attributes like section.
-  void SetInternalFunctionAttributes(GlobalDecl GD, llvm::Function *F,
-                                     const CGFunctionInfo &FI);
-
-  /// Set the LLVM function attributes (sext, zext, etc).
-  void SetLLVMFunctionAttributes(GlobalDecl GD, const CGFunctionInfo &Info,
-                                 llvm::Function *F);
-
-  /// Set the LLVM function attributes which only apply to a function
-  /// definition.
-  void SetLLVMFunctionAttributesForDefinition(const Decl *D, llvm::Function *F);
-
-  /// Return true iff the given type uses 'sret' when used as a return type.
-  bool ReturnTypeUsesSRet(const CGFunctionInfo &FI);
-
-  /// Return true iff the given type uses an argument slot when 'sret' is used
-  /// as a return type.
-  bool ReturnSlotInterferesWithArgs(const CGFunctionInfo &FI);
-
-  /// Return true iff the given type uses 'fpret' when used as a return type.
-  bool ReturnTypeUsesFPRet(QualType ResultType);
-
-  /// Return true iff the given type uses 'fp2ret' when used as a return type.
-  bool ReturnTypeUsesFP2Ret(QualType ResultType);
-
-  /// Get the LLVM attributes and calling convention to use for a particular
-  /// function type.
-  ///
-  /// \param Name - The function name.
-  /// \param Info - The function type information.
-  /// \param CalleeInfo - The callee information these attributes are being
-  /// constructed for. If valid, the attributes applied to this decl may
-  /// contribute to the function attributes and calling convention.
-  /// \param Attrs [out] - On return, the attribute list to use.
-  /// \param CallingConv [out] - On return, the LLVM calling convention to use.
-  void ConstructAttributeList(StringRef Name, const CGFunctionInfo &Info,
-                              CGCalleeInfo CalleeInfo,
-                              llvm::AttributeList &Attrs, unsigned &CallingConv,
-                              bool AttrOnCallSite);
-
-  /// Adds attributes to F according to our CodeGenOptions and LangOptions, as
-  /// though we had emitted it ourselves.  We remove any attributes on F that
-  /// conflict with the attributes we add here.
-  ///
-  /// This is useful for adding attrs to bitcode modules that you want to link
-  /// with but don't control, such as CUDA's libdevice.  When linking with such
-  /// a bitcode library, you might want to set e.g. its functions'
-  /// "unsafe-fp-math" attribute to match the attr of the functions you're
-  /// codegen'ing.  Otherwise, LLVM will interpret the bitcode module's lack of
-  /// unsafe-fp-math attrs as tantamount to unsafe-fp-math=false, and then LLVM
-  /// will propagate unsafe-fp-math=false up to every transitive caller of a
-  /// function in the bitcode library!
-  ///
-  /// With the exception of fast-math attrs, this will only make the attributes
-  /// on the function more conservative.  But it's unsafe to call this on a
-  /// function which relies on particular fast-math attributes for correctness.
-  /// It's up to you to ensure that this is safe.
-  void AddDefaultFnAttrs(llvm::Function &F);
-
-  /// Parses the target attributes passed in, and returns only the ones that are
-  /// valid feature names.
-  TargetAttr::ParsedTargetAttr filterFunctionTargetAttrs(const TargetAttr *TD);
-
-  // Fills in the supplied string map with the set of target features for the
-  // passed in function.
-  void getFunctionFeatureMap(llvm::StringMap<bool> &FeatureMap, GlobalDecl GD);
-
-  StringRef getMangledName(GlobalDecl GD);
-  StringRef getBlockMangledName(GlobalDecl GD, const BlockDecl *BD);
-
-  void EmitTentativeDefinition(const VarDecl *D);
-
-  void EmitVTable(CXXRecordDecl *Class);
-
-  void RefreshTypeCacheForClass(const CXXRecordDecl *Class);
-
-  /// Appends Opts to the "llvm.linker.options" metadata value.
-  void AppendLinkerOptions(StringRef Opts);
-
-  /// Appends a detect mismatch command to the linker options.
-  void AddDetectMismatch(StringRef Name, StringRef Value);
-
-  /// Appends a dependent lib to the appropriate metadata value.
-  void AddDependentLib(StringRef Lib);
-
-
-  llvm::GlobalVariable::LinkageTypes getFunctionLinkage(GlobalDecl GD);
-
-  void setFunctionLinkage(GlobalDecl GD, llvm::Function *F) {
-    F->setLinkage(getFunctionLinkage(GD));
-  }
-
-  /// Return the appropriate linkage for the vtable, VTT, and type information
-  /// of the given class.
-  llvm::GlobalVariable::LinkageTypes getVTableLinkage(const CXXRecordDecl *RD);
-
-  /// Return the store size, in character units, of the given LLVM type.
-  CharUnits GetTargetTypeStoreSize(llvm::Type *Ty) const;
-
-  /// Returns LLVM linkage for a declarator.
-  llvm::GlobalValue::LinkageTypes
-  getLLVMLinkageForDeclarator(const DeclaratorDecl *D, GVALinkage Linkage,
-                              bool IsConstantVariable);
-
-  /// Returns LLVM linkage for a declarator.
-  llvm::GlobalValue::LinkageTypes
-  getLLVMLinkageVarDefinition(const VarDecl *VD, bool IsConstant);
-
-  /// Emit all the global annotations.
-  void EmitGlobalAnnotations();
-
-  /// Emit an annotation string.
-  llvm::Constant *EmitAnnotationString(StringRef Str);
-
-  /// Emit the annotation's translation unit.
-  llvm::Constant *EmitAnnotationUnit(SourceLocation Loc);
-
-  /// Emit the annotation line number.
-  llvm::Constant *EmitAnnotationLineNo(SourceLocation L);
-
-  /// Generate the llvm::ConstantStruct which contains the annotation
-  /// information for a given GlobalValue. The annotation struct is
-  /// {i8 *, i8 *, i8 *, i32}. The first field is a constant expression, the
-  /// GlobalValue being annotated. The second field is the constant string
-  /// created from the AnnotateAttr's annotation. The third field is a constant
-  /// string containing the name of the translation unit. The fourth field is
-  /// the line number in the file of the annotated value declaration.
-  llvm::Constant *EmitAnnotateAttr(llvm::GlobalValue *GV,
-                                   const AnnotateAttr *AA,
-                                   SourceLocation L);
-
-  /// Add global annotations that are set on D, for the global GV. Those
-  /// annotations are emitted during finalization of the LLVM code.
-  void AddGlobalAnnotations(const ValueDecl *D, llvm::GlobalValue *GV);
-
-  bool isInSanitizerBlacklist(SanitizerMask Kind, llvm::Function *Fn,
-                              SourceLocation Loc) const;
-
-  bool isInSanitizerBlacklist(llvm::GlobalVariable *GV, SourceLocation Loc,
-                              QualType Ty,
-                              StringRef Category = StringRef()) const;
-
-  /// Imbue XRay attributes to a function, applying the always/never attribute
-  /// lists in the process. Returns true if we did imbue attributes this way,
-  /// false otherwise.
-  bool imbueXRayAttrs(llvm::Function *Fn, SourceLocation Loc,
-                      StringRef Category = StringRef()) const;
-
-  SanitizerMetadata *getSanitizerMetadata() {
-    return SanitizerMD.get();
-  }
-
-  void addDeferredVTable(const CXXRecordDecl *RD) {
-    DeferredVTables.push_back(RD);
-  }
-
-  /// Emit code for a single global function or var decl. Forward declarations
-  /// are emitted lazily.
-  void EmitGlobal(GlobalDecl D);
-
-  bool TryEmitBaseDestructorAsAlias(const CXXDestructorDecl *D);
-
-  llvm::GlobalValue *GetGlobalValue(StringRef Ref);
-
-  /// Set attributes which are common to any form of a global definition (alias,
-  /// Objective-C method, function, global variable).
-  ///
-  /// NOTE: This should only be called for definitions.
-  void SetCommonAttributes(GlobalDecl GD, llvm::GlobalValue *GV);
-
-  void addReplacement(StringRef Name, llvm::Constant *C);
-
-  void addGlobalValReplacement(llvm::GlobalValue *GV, llvm::Constant *C);
-
-  /// Emit a code for threadprivate directive.
-  /// \param D Threadprivate declaration.
-  void EmitOMPThreadPrivateDecl(const OMPThreadPrivateDecl *D);
-
-  /// Emit a code for declare reduction construct.
-  void EmitOMPDeclareReduction(const OMPDeclareReductionDecl *D,
-                               CodeGenFunction *CGF = nullptr);
-
-  /// Emit a code for declare mapper construct.
-  void EmitOMPDeclareMapper(const OMPDeclareMapperDecl *D,
-                            CodeGenFunction *CGF = nullptr);
-
-  /// Emit a code for requires directive.
-  /// \param D Requires declaration
-  void EmitOMPRequiresDecl(const OMPRequiresDecl *D);
-
-  /// Returns whether the given record has hidden LTO visibility and therefore
-  /// may participate in (single-module) CFI and whole-program vtable
-  /// optimization.
-  bool HasHiddenLTOVisibility(const CXXRecordDecl *RD);
-
-  /// Emit type metadata for the given vtable using the given layout.
-  void EmitVTableTypeMetadata(llvm::GlobalVariable *VTable,
-                              const VTableLayout &VTLayout);
-
-  /// Generate a cross-DSO type identifier for MD.
-  llvm::ConstantInt *CreateCrossDsoCfiTypeId(llvm::Metadata *MD);
-
-  /// Create a metadata identifier for the given type. This may either be an
-  /// MDString (for external identifiers) or a distinct unnamed MDNode (for
-  /// internal identifiers).
-  llvm::Metadata *CreateMetadataIdentifierForType(QualType T);
-
-  /// Create a metadata identifier that is intended to be used to check virtual
-  /// calls via a member function pointer.
-  llvm::Metadata *CreateMetadataIdentifierForVirtualMemPtrType(QualType T);
-
-  /// Create a metadata identifier for the generalization of the given type.
-  /// This may either be an MDString (for external identifiers) or a distinct
-  /// unnamed MDNode (for internal identifiers).
-  llvm::Metadata *CreateMetadataIdentifierGeneralized(QualType T);
-
-  /// Create and attach type metadata to the given function.
-  void CreateFunctionTypeMetadataForIcall(const FunctionDecl *FD,
-                                          llvm::Function *F);
-
-  /// Returns whether this module needs the "all-vtables" type identifier.
-  bool NeedAllVtablesTypeId() const;
-
-  /// Create and attach type metadata for the given vtable.
-  void AddVTableTypeMetadata(llvm::GlobalVariable *VTable, CharUnits Offset,
-                             const CXXRecordDecl *RD);
-
-  /// Return a vector of most-base classes for RD. This is used to implement
-  /// control flow integrity checks for member function pointers.
-  ///
-  /// A most-base class of a class C is defined as a recursive base class of C,
-  /// including C itself, that does not have any bases.
-  std::vector<const CXXRecordDecl *>
-  getMostBaseClasses(const CXXRecordDecl *RD);
-
-  /// Get the declaration of std::terminate for the platform.
-  llvm::FunctionCallee getTerminateFn();
-
-  llvm::SanitizerStatReport &getSanStats();
-
-  llvm::Value *
-  createOpenCLIntToSamplerConversion(const Expr *E, CodeGenFunction &CGF);
-
-  /// OpenCL v1.2 s5.6.4.6 allows the compiler to store kernel argument
-  /// information in the program executable. The argument information stored
-  /// includes the argument name, its type, the address and access qualifiers
-  /// used. This helper can be used to generate metadata for source code kernel
-  /// function as well as generated implicitly kernels. If a kernel is generated
-  /// implicitly null value has to be passed to the last two parameters,
-  /// otherwise all parameters must have valid non-null values.
-  /// \param FN is a pointer to IR function being generated.
-  /// \param FD is a pointer to function declaration if any.
-  /// \param CGF is a pointer to CodeGenFunction that generates this function.
-  void GenOpenCLArgMetadata(llvm::Function *FN,
-                            const FunctionDecl *FD = nullptr,
-                            CodeGenFunction *CGF = nullptr);
-
-  /// Get target specific null pointer.
-  /// \param T is the LLVM type of the null pointer.
-  /// \param QT is the clang QualType of the null pointer.
-  llvm::Constant *getNullPointer(llvm::PointerType *T, QualType QT);
-
-private:
-  llvm::Constant *GetOrCreateLLVMFunction(
-      StringRef MangledName, llvm::Type *Ty, GlobalDecl D, bool ForVTable,
-      bool DontDefer = false, bool IsThunk = false,
-      llvm::AttributeList ExtraAttrs = llvm::AttributeList(),
-      ForDefinition_t IsForDefinition = NotForDefinition);
-
-  llvm::Constant *GetOrCreateMultiVersionResolver(GlobalDecl GD,
-                                                  llvm::Type *DeclTy,
-                                                  const FunctionDecl *FD);
-  void UpdateMultiVersionNames(GlobalDecl GD, const FunctionDecl *FD);
-
-  llvm::Constant *GetOrCreateLLVMGlobal(StringRef MangledName,
-                                        llvm::PointerType *PTy,
-                                        const VarDecl *D,
-                                        ForDefinition_t IsForDefinition
-                                          = NotForDefinition);
-
-  bool GetCPUAndFeaturesAttributes(GlobalDecl GD,
-                                   llvm::AttrBuilder &AttrBuilder);
-  void setNonAliasAttributes(GlobalDecl GD, llvm::GlobalObject *GO);
-
-  /// Set function attributes for a function declaration.
-  void SetFunctionAttributes(GlobalDecl GD, llvm::Function *F,
-                             bool IsIncompleteFunction, bool IsThunk);
-
-  void EmitGlobalDefinition(GlobalDecl D, llvm::GlobalValue *GV = nullptr);
-
-  void EmitGlobalFunctionDefinition(GlobalDecl GD, llvm::GlobalValue *GV);
-  void EmitMultiVersionFunctionDefinition(GlobalDecl GD, llvm::GlobalValue *GV);
-
-  void EmitGlobalVarDefinition(const VarDecl *D, bool IsTentative = false);
-  void EmitAliasDefinition(GlobalDecl GD);
-  void emitIFuncDefinition(GlobalDecl GD);
-  void emitCPUDispatchDefinition(GlobalDecl GD);
-  void EmitObjCPropertyImplementations(const ObjCImplementationDecl *D);
-  void EmitObjCIvarInitializations(ObjCImplementationDecl *D);
-
-  // C++ related functions.
-
-  void EmitDeclContext(const DeclContext *DC);
-  void EmitLinkageSpec(const LinkageSpecDecl *D);
-
-  /// Emit the function that initializes C++ thread_local variables.
-  void EmitCXXThreadLocalInitFunc();
-
-  /// Emit the function that initializes C++ globals.
-  void EmitCXXGlobalInitFunc();
-
-  /// Emit the function that destroys C++ globals.
-  void EmitCXXGlobalDtorFunc();
-
-  /// Emit the function that initializes the specified global (if PerformInit is
-  /// true) and registers its destructor.
-  void EmitCXXGlobalVarDeclInitFunc(const VarDecl *D,
-                                    llvm::GlobalVariable *Addr,
-                                    bool PerformInit);
-
-  void EmitPointerToInitFunc(const VarDecl *VD, llvm::GlobalVariable *Addr,
-                             llvm::Function *InitFunc, InitSegAttr *ISA);
-
-  // FIXME: Hardcoding priority here is gross.
-  void AddGlobalCtor(llvm::Function *Ctor, int Priority = 65535,
-                     llvm::Constant *AssociatedData = nullptr);
-  void AddGlobalDtor(llvm::Function *Dtor, int Priority = 65535);
-
-  /// EmitCtorList - Generates a global array of functions and priorities using
-  /// the given list and name. This array will have appending linkage and is
-  /// suitable for use as a LLVM constructor or destructor array. Clears Fns.
-  void EmitCtorList(CtorList &Fns, const char *GlobalName);
-
-  /// Emit any needed decls for which code generation was deferred.
-  void EmitDeferred();
-
-  /// Try to emit external vtables as available_externally if they have emitted
-  /// all inlined virtual functions.  It runs after EmitDeferred() and therefore
-  /// is not allowed to create new references to things that need to be emitted
-  /// lazily.
-  void EmitVTablesOpportunistically();
-
-  /// Call replaceAllUsesWith on all pairs in Replacements.
-  void applyReplacements();
-
-  /// Call replaceAllUsesWith on all pairs in GlobalValReplacements.
-  void applyGlobalValReplacements();
-
-  void checkAliases();
-
-  std::map<int, llvm::TinyPtrVector<llvm::Function *>> DtorsUsingAtExit;
-
-  /// Register functions annotated with __attribute__((destructor)) using
-  /// __cxa_atexit, if it is available, or atexit otherwise.
-  void registerGlobalDtorsWithAtExit();
-
-  void emitMultiVersionFunctions();
-
-  /// Emit any vtables which we deferred and still have a use for.
-  void EmitDeferredVTables();
-
-  /// Emit a dummy function that reference a CoreFoundation symbol when
-  /// @available is used on Darwin.
-  void emitAtAvailableLinkGuard();
-
-  /// Emit the llvm.used and llvm.compiler.used metadata.
-  void emitLLVMUsed();
-
-  /// Emit the link options introduced by imported modules.
-  void EmitModuleLinkOptions();
-
-  /// Emit aliases for internal-linkage declarations inside "C" language
-  /// linkage specifications, giving them the "expected" name where possible.
-  void EmitStaticExternCAliases();
-
-  void EmitDeclMetadata();
-
-  /// Emit the Clang version as llvm.ident metadata.
-  void EmitVersionIdentMetadata();
-
-  /// Emit the Clang commandline as llvm.commandline metadata.
-  void EmitCommandLineMetadata();
-
-  /// Emits target specific Metadata for global declarations.
-  void EmitTargetMetadata();
-
-  /// Emits OpenCL specific Metadata e.g. OpenCL version.
-  void EmitOpenCLMetadata();
-
-  /// Emit the llvm.gcov metadata used to tell LLVM where to emit the .gcno and
-  /// .gcda files in a way that persists in .bc files.
-  void EmitCoverageFile();
-
-  /// Emits the initializer for a uuidof string.
-  llvm::Constant *EmitUuidofInitializer(StringRef uuidstr);
-
-  /// Determine whether the definition must be emitted; if this returns \c
-  /// false, the definition can be emitted lazily if it's used.
-  bool MustBeEmitted(const ValueDecl *D);
-
-  /// Determine whether the definition can be emitted eagerly, or should be
-  /// delayed until the end of the translation unit. This is relevant for
-  /// definitions whose linkage can change, e.g. implicit function instantions
-  /// which may later be explicitly instantiated.
-  bool MayBeEmittedEagerly(const ValueDecl *D);
-
-  /// Check whether we can use a "simpler", more core exceptions personality
-  /// function.
-  void SimplifyPersonality();
-
-  /// Helper function for ConstructAttributeList and AddDefaultFnAttrs.
-  /// Constructs an AttrList for a function with the given properties.
-  void ConstructDefaultFnAttrList(StringRef Name, bool HasOptnone,
-                                  bool AttrOnCallSite,
-                                  llvm::AttrBuilder &FuncAttrs);
-
-  llvm::Metadata *CreateMetadataIdentifierImpl(QualType T, MetadataTypeMap &Map,
-                                               StringRef Suffix);
-};
-
-}  // end namespace CodeGen
-}  // end namespace clang
-
-#endif // LLVM_CLANG_LIB_CODEGEN_CODEGENMODULE_H