//===- DIBuilder.h - Debug Information Builder ------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file defines a DIBuilder that is useful for creating debugging // information entries in LLVM IR form. // //===----------------------------------------------------------------------===// #ifndef LLVM_IR_DIBUILDER_H #define LLVM_IR_DIBUILDER_H #include "llvm/ADT/ArrayRef.h" #include "llvm/ADT/StringRef.h" #include "llvm/IR/DebugInfo.h" #include "llvm/IR/TrackingMDRef.h" #include "llvm/IR/ValueHandle.h" #include "llvm/Support/DataTypes.h" namespace llvm { class BasicBlock; class Instruction; class Function; class Module; class Value; class Constant; class LLVMContext; class StringRef; class DIBuilder { Module &M; LLVMContext &VMContext; DICompileUnit *CUNode; ///< The one compile unit created by this DIBuiler. Function *DeclareFn; ///< llvm.dbg.declare Function *ValueFn; ///< llvm.dbg.value SmallVector<Metadata *, 4> AllEnumTypes; /// Track the RetainTypes, since they can be updated later on. SmallVector<TrackingMDNodeRef, 4> AllRetainTypes; SmallVector<Metadata *, 4> AllSubprograms; SmallVector<Metadata *, 4> AllGVs; SmallVector<TrackingMDNodeRef, 4> AllImportedModules; /// Track nodes that may be unresolved. SmallVector<TrackingMDNodeRef, 4> UnresolvedNodes; bool AllowUnresolvedNodes; /// Each subprogram's preserved local variables. /// /// Do not use a std::vector. Some versions of libc++ apparently copy /// instead of move on grow operations, and TrackingMDRef is expensive to /// copy. DenseMap<MDNode *, SmallVector<TrackingMDNodeRef, 1>> PreservedVariables; DIBuilder(const DIBuilder &) = delete; void operator=(const DIBuilder &) = delete; /// Create a temporary. /// /// Create an \a temporary node and track it in \a UnresolvedNodes. void trackIfUnresolved(MDNode *N); public: /// Construct a builder for a module. /// /// If \c AllowUnresolved, collect unresolved nodes attached to the module /// in order to resolve cycles during \a finalize(). explicit DIBuilder(Module &M, bool AllowUnresolved = true); /// Construct any deferred debug info descriptors. void finalize(); /// A CompileUnit provides an anchor for all debugging /// information generated during this instance of compilation. /// \param Lang Source programming language, eg. dwarf::DW_LANG_C99 /// \param File File name /// \param Dir Directory /// \param Producer Identify the producer of debugging information /// and code. Usually this is a compiler /// version string. /// \param isOptimized A boolean flag which indicates whether optimization /// is enabled or not. /// \param Flags This string lists command line options. This /// string is directly embedded in debug info /// output which may be used by a tool /// analyzing generated debugging information. /// \param RV This indicates runtime version for languages like /// Objective-C. /// \param SplitName The name of the file that we'll split debug info /// out into. /// \param Kind The kind of debug information to generate. /// \param DWOId The DWOId if this is a split skeleton compile unit. DICompileUnit * createCompileUnit(unsigned Lang, StringRef File, StringRef Dir, StringRef Producer, bool isOptimized, StringRef Flags, unsigned RV, StringRef SplitName = StringRef(), DICompileUnit::DebugEmissionKind Kind = DICompileUnit::DebugEmissionKind::FullDebug, uint64_t DWOId = 0); /// Create a file descriptor to hold debugging information /// for a file. DIFile *createFile(StringRef Filename, StringRef Directory); /// Create a single enumerator value. DIEnumerator *createEnumerator(StringRef Name, int64_t Val); /// Create a DWARF unspecified type. DIBasicType *createUnspecifiedType(StringRef Name); /// Create C++11 nullptr type. DIBasicType *createNullPtrType(); /// Create debugging information entry for a basic /// type. /// \param Name Type name. /// \param SizeInBits Size of the type. /// \param AlignInBits Type alignment. /// \param Encoding DWARF encoding code, e.g. dwarf::DW_ATE_float. DIBasicType *createBasicType(StringRef Name, uint64_t SizeInBits, uint64_t AlignInBits, unsigned Encoding); /// Create debugging information entry for a qualified /// type, e.g. 'const int'. /// \param Tag Tag identifing type, e.g. dwarf::TAG_volatile_type /// \param FromTy Base Type. DIDerivedType *createQualifiedType(unsigned Tag, DIType *FromTy); /// Create debugging information entry for a pointer. /// \param PointeeTy Type pointed by this pointer. /// \param SizeInBits Size. /// \param AlignInBits Alignment. (optional) /// \param Name Pointer type name. (optional) DIDerivedType *createPointerType(DIType *PointeeTy, uint64_t SizeInBits, uint64_t AlignInBits = 0, StringRef Name = ""); /// Create debugging information entry for a pointer to member. /// \param PointeeTy Type pointed to by this pointer. /// \param SizeInBits Size. /// \param AlignInBits Alignment. (optional) /// \param Class Type for which this pointer points to members of. DIDerivedType *createMemberPointerType(DIType *PointeeTy, DIType *Class, uint64_t SizeInBits, uint64_t AlignInBits = 0); /// Create debugging information entry for a c++ /// style reference or rvalue reference type. DIDerivedType *createReferenceType(unsigned Tag, DIType *RTy, uint64_t SizeInBits = 0, uint64_t AlignInBits = 0); /// Create debugging information entry for a typedef. /// \param Ty Original type. /// \param Name Typedef name. /// \param File File where this type is defined. /// \param LineNo Line number. /// \param Context The surrounding context for the typedef. DIDerivedType *createTypedef(DIType *Ty, StringRef Name, DIFile *File, unsigned LineNo, DIScope *Context); /// Create debugging information entry for a 'friend'. DIDerivedType *createFriend(DIType *Ty, DIType *FriendTy); /// Create debugging information entry to establish /// inheritance relationship between two types. /// \param Ty Original type. /// \param BaseTy Base type. Ty is inherits from base. /// \param BaseOffset Base offset. /// \param Flags Flags to describe inheritance attribute, /// e.g. private DIDerivedType *createInheritance(DIType *Ty, DIType *BaseTy, uint64_t BaseOffset, unsigned Flags); /// Create debugging information entry for a member. /// \param Scope Member scope. /// \param Name Member name. /// \param File File where this member is defined. /// \param LineNo Line number. /// \param SizeInBits Member size. /// \param AlignInBits Member alignment. /// \param OffsetInBits Member offset. /// \param Flags Flags to encode member attribute, e.g. private /// \param Ty Parent type. DIDerivedType *createMemberType(DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNo, uint64_t SizeInBits, uint64_t AlignInBits, uint64_t OffsetInBits, unsigned Flags, DIType *Ty); /// Create debugging information entry for a /// C++ static data member. /// \param Scope Member scope. /// \param Name Member name. /// \param File File where this member is declared. /// \param LineNo Line number. /// \param Ty Type of the static member. /// \param Flags Flags to encode member attribute, e.g. private. /// \param Val Const initializer of the member. DIDerivedType *createStaticMemberType(DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNo, DIType *Ty, unsigned Flags, llvm::Constant *Val); /// Create debugging information entry for Objective-C /// instance variable. /// \param Name Member name. /// \param File File where this member is defined. /// \param LineNo Line number. /// \param SizeInBits Member size. /// \param AlignInBits Member alignment. /// \param OffsetInBits Member offset. /// \param Flags Flags to encode member attribute, e.g. private /// \param Ty Parent type. /// \param PropertyNode Property associated with this ivar. DIDerivedType *createObjCIVar(StringRef Name, DIFile *File, unsigned LineNo, uint64_t SizeInBits, uint64_t AlignInBits, uint64_t OffsetInBits, unsigned Flags, DIType *Ty, MDNode *PropertyNode); /// Create debugging information entry for Objective-C /// property. /// \param Name Property name. /// \param File File where this property is defined. /// \param LineNumber Line number. /// \param GetterName Name of the Objective C property getter selector. /// \param SetterName Name of the Objective C property setter selector. /// \param PropertyAttributes Objective C property attributes. /// \param Ty Type. DIObjCProperty *createObjCProperty(StringRef Name, DIFile *File, unsigned LineNumber, StringRef GetterName, StringRef SetterName, unsigned PropertyAttributes, DIType *Ty); /// Create debugging information entry for a class. /// \param Scope Scope in which this class is defined. /// \param Name class name. /// \param File File where this member is defined. /// \param LineNumber Line number. /// \param SizeInBits Member size. /// \param AlignInBits Member alignment. /// \param OffsetInBits Member offset. /// \param Flags Flags to encode member attribute, e.g. private /// \param Elements class members. /// \param VTableHolder Debug info of the base class that contains vtable /// for this type. This is used in /// DW_AT_containing_type. See DWARF documentation /// for more info. /// \param TemplateParms Template type parameters. /// \param UniqueIdentifier A unique identifier for the class. DICompositeType *createClassType(DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber, uint64_t SizeInBits, uint64_t AlignInBits, uint64_t OffsetInBits, unsigned Flags, DIType *DerivedFrom, DINodeArray Elements, DIType *VTableHolder = nullptr, MDNode *TemplateParms = nullptr, StringRef UniqueIdentifier = ""); /// Create debugging information entry for a struct. /// \param Scope Scope in which this struct is defined. /// \param Name Struct name. /// \param File File where this member is defined. /// \param LineNumber Line number. /// \param SizeInBits Member size. /// \param AlignInBits Member alignment. /// \param Flags Flags to encode member attribute, e.g. private /// \param Elements Struct elements. /// \param RunTimeLang Optional parameter, Objective-C runtime version. /// \param UniqueIdentifier A unique identifier for the struct. DICompositeType *createStructType( DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber, uint64_t SizeInBits, uint64_t AlignInBits, unsigned Flags, DIType *DerivedFrom, DINodeArray Elements, unsigned RunTimeLang = 0, DIType *VTableHolder = nullptr, StringRef UniqueIdentifier = ""); /// Create debugging information entry for an union. /// \param Scope Scope in which this union is defined. /// \param Name Union name. /// \param File File where this member is defined. /// \param LineNumber Line number. /// \param SizeInBits Member size. /// \param AlignInBits Member alignment. /// \param Flags Flags to encode member attribute, e.g. private /// \param Elements Union elements. /// \param RunTimeLang Optional parameter, Objective-C runtime version. /// \param UniqueIdentifier A unique identifier for the union. DICompositeType *createUnionType(DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber, uint64_t SizeInBits, uint64_t AlignInBits, unsigned Flags, DINodeArray Elements, unsigned RunTimeLang = 0, StringRef UniqueIdentifier = ""); /// Create debugging information for template /// type parameter. /// \param Scope Scope in which this type is defined. /// \param Name Type parameter name. /// \param Ty Parameter type. DITemplateTypeParameter * createTemplateTypeParameter(DIScope *Scope, StringRef Name, DIType *Ty); /// Create debugging information for template /// value parameter. /// \param Scope Scope in which this type is defined. /// \param Name Value parameter name. /// \param Ty Parameter type. /// \param Val Constant parameter value. DITemplateValueParameter *createTemplateValueParameter(DIScope *Scope, StringRef Name, DIType *Ty, Constant *Val); /// Create debugging information for a template template parameter. /// \param Scope Scope in which this type is defined. /// \param Name Value parameter name. /// \param Ty Parameter type. /// \param Val The fully qualified name of the template. DITemplateValueParameter *createTemplateTemplateParameter(DIScope *Scope, StringRef Name, DIType *Ty, StringRef Val); /// Create debugging information for a template parameter pack. /// \param Scope Scope in which this type is defined. /// \param Name Value parameter name. /// \param Ty Parameter type. /// \param Val An array of types in the pack. DITemplateValueParameter *createTemplateParameterPack(DIScope *Scope, StringRef Name, DIType *Ty, DINodeArray Val); /// Create debugging information entry for an array. /// \param Size Array size. /// \param AlignInBits Alignment. /// \param Ty Element type. /// \param Subscripts Subscripts. DICompositeType *createArrayType(uint64_t Size, uint64_t AlignInBits, DIType *Ty, DINodeArray Subscripts); /// Create debugging information entry for a vector type. /// \param Size Array size. /// \param AlignInBits Alignment. /// \param Ty Element type. /// \param Subscripts Subscripts. DICompositeType *createVectorType(uint64_t Size, uint64_t AlignInBits, DIType *Ty, DINodeArray Subscripts); /// Create debugging information entry for an /// enumeration. /// \param Scope Scope in which this enumeration is defined. /// \param Name Union name. /// \param File File where this member is defined. /// \param LineNumber Line number. /// \param SizeInBits Member size. /// \param AlignInBits Member alignment. /// \param Elements Enumeration elements. /// \param UnderlyingType Underlying type of a C++11/ObjC fixed enum. /// \param UniqueIdentifier A unique identifier for the enum. DICompositeType *createEnumerationType( DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber, uint64_t SizeInBits, uint64_t AlignInBits, DINodeArray Elements, DIType *UnderlyingType, StringRef UniqueIdentifier = ""); /// Create subroutine type. /// \param ParameterTypes An array of subroutine parameter types. This /// includes return type at 0th index. /// \param Flags E.g.: LValueReference. /// These flags are used to emit dwarf attributes. DISubroutineType *createSubroutineType(DITypeRefArray ParameterTypes, unsigned Flags = 0); /// Create an external type reference. /// \param Tag Dwarf TAG. /// \param File File in which the type is defined. /// \param UniqueIdentifier A unique identifier for the type. DICompositeType *createExternalTypeRef(unsigned Tag, DIFile *File, StringRef UniqueIdentifier); /// Create a new DIType* with "artificial" flag set. DIType *createArtificialType(DIType *Ty); /// Create a new DIType* with the "object pointer" /// flag set. DIType *createObjectPointerType(DIType *Ty); /// Create a permanent forward-declared type. DICompositeType *createForwardDecl(unsigned Tag, StringRef Name, DIScope *Scope, DIFile *F, unsigned Line, unsigned RuntimeLang = 0, uint64_t SizeInBits = 0, uint64_t AlignInBits = 0, StringRef UniqueIdentifier = ""); /// Create a temporary forward-declared type. DICompositeType *createReplaceableCompositeType( unsigned Tag, StringRef Name, DIScope *Scope, DIFile *F, unsigned Line, unsigned RuntimeLang = 0, uint64_t SizeInBits = 0, uint64_t AlignInBits = 0, unsigned Flags = DINode::FlagFwdDecl, StringRef UniqueIdentifier = ""); /// Retain DIScope* in a module even if it is not referenced /// through debug info anchors. void retainType(DIScope *T); /// Create unspecified parameter type /// for a subroutine type. DIBasicType *createUnspecifiedParameter(); /// Get a DINodeArray, create one if required. DINodeArray getOrCreateArray(ArrayRef<Metadata *> Elements); /// Get a DITypeRefArray, create one if required. DITypeRefArray getOrCreateTypeArray(ArrayRef<Metadata *> Elements); /// Create a descriptor for a value range. This /// implicitly uniques the values returned. DISubrange *getOrCreateSubrange(int64_t Lo, int64_t Count); /// Create a new descriptor for the specified /// variable. /// \param Context Variable scope. /// \param Name Name of the variable. /// \param LinkageName Mangled name of the variable. /// \param File File where this variable is defined. /// \param LineNo Line number. /// \param Ty Variable Type. /// \param isLocalToUnit Boolean flag indicate whether this variable is /// externally visible or not. /// \param Val llvm::Value of the variable. /// \param Decl Reference to the corresponding declaration. DIGlobalVariable *createGlobalVariable(DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *File, unsigned LineNo, DIType *Ty, bool isLocalToUnit, llvm::Constant *Val, MDNode *Decl = nullptr); /// Identical to createGlobalVariable /// except that the resulting DbgNode is temporary and meant to be RAUWed. DIGlobalVariable *createTempGlobalVariableFwdDecl( DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *File, unsigned LineNo, DIType *Ty, bool isLocalToUnit, llvm::Constant *Val, MDNode *Decl = nullptr); /// Create a new descriptor for an auto variable. This is a local variable /// that is not a subprogram parameter. /// /// \c Scope must be a \a DILocalScope, and thus its scope chain eventually /// leads to a \a DISubprogram. /// /// If \c AlwaysPreserve, this variable will be referenced from its /// containing subprogram, and will survive some optimizations. DILocalVariable *createAutoVariable(DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNo, DIType *Ty, bool AlwaysPreserve = false, unsigned Flags = 0); /// Create a new descriptor for a parameter variable. /// /// \c Scope must be a \a DILocalScope, and thus its scope chain eventually /// leads to a \a DISubprogram. /// /// \c ArgNo is the index (starting from \c 1) of this variable in the /// subprogram parameters. \c ArgNo should not conflict with other /// parameters of the same subprogram. /// /// If \c AlwaysPreserve, this variable will be referenced from its /// containing subprogram, and will survive some optimizations. DILocalVariable *createParameterVariable(DIScope *Scope, StringRef Name, unsigned ArgNo, DIFile *File, unsigned LineNo, DIType *Ty, bool AlwaysPreserve = false, unsigned Flags = 0); /// Create a new descriptor for the specified /// variable which has a complex address expression for its address. /// \param Addr An array of complex address operations. DIExpression *createExpression(ArrayRef<uint64_t> Addr = None); DIExpression *createExpression(ArrayRef<int64_t> Addr); /// Create a descriptor to describe one part /// of aggregate variable that is fragmented across multiple Values. /// /// \param OffsetInBits Offset of the piece in bits. /// \param SizeInBits Size of the piece in bits. DIExpression *createBitPieceExpression(unsigned OffsetInBits, unsigned SizeInBits); /// Create a new descriptor for the specified subprogram. /// See comments in DISubprogram* for descriptions of these fields. /// \param Scope Function scope. /// \param Name Function name. /// \param LinkageName Mangled function name. /// \param File File where this variable is defined. /// \param LineNo Line number. /// \param Ty Function type. /// \param isLocalToUnit True if this function is not externally visible. /// \param isDefinition True if this is a function definition. /// \param ScopeLine Set to the beginning of the scope this starts /// \param Flags e.g. is this function prototyped or not. /// These flags are used to emit dwarf attributes. /// \param isOptimized True if optimization is ON. /// \param TParams Function template parameters. DISubprogram *createFunction(DIScope *Scope, StringRef Name, StringRef LinkageName, DIFile *File, unsigned LineNo, DISubroutineType *Ty, bool isLocalToUnit, bool isDefinition, unsigned ScopeLine, unsigned Flags = 0, bool isOptimized = false, DITemplateParameterArray TParams = nullptr, DISubprogram *Decl = nullptr); /// Identical to createFunction, /// except that the resulting DbgNode is meant to be RAUWed. DISubprogram *createTempFunctionFwdDecl( DIScope *Scope, StringRef Name, StringRef LinkageName, DIFile *File, unsigned LineNo, DISubroutineType *Ty, bool isLocalToUnit, bool isDefinition, unsigned ScopeLine, unsigned Flags = 0, bool isOptimized = false, DITemplateParameterArray TParams = nullptr, DISubprogram *Decl = nullptr); /// FIXME: this is added for dragonegg. Once we update dragonegg /// to call resolve function, this will be removed. DISubprogram *createFunction(DIScopeRef Scope, StringRef Name, StringRef LinkageName, DIFile *File, unsigned LineNo, DISubroutineType *Ty, bool isLocalToUnit, bool isDefinition, unsigned ScopeLine, unsigned Flags = 0, bool isOptimized = false, DITemplateParameterArray TParams = nullptr, DISubprogram *Decl = nullptr); /// Create a new descriptor for the specified C++ method. /// See comments in \a DISubprogram* for descriptions of these fields. /// \param Scope Function scope. /// \param Name Function name. /// \param LinkageName Mangled function name. /// \param File File where this variable is defined. /// \param LineNo Line number. /// \param Ty Function type. /// \param isLocalToUnit True if this function is not externally visible.. /// \param isDefinition True if this is a function definition. /// \param Virtuality Attributes describing virtualness. e.g. pure /// virtual function. /// \param VTableIndex Index no of this method in virtual table, or -1u if /// unrepresentable. /// \param VTableHolder Type that holds vtable. /// \param Flags e.g. is this function prototyped or not. /// This flags are used to emit dwarf attributes. /// \param isOptimized True if optimization is ON. /// \param TParams Function template parameters. DISubprogram * createMethod(DIScope *Scope, StringRef Name, StringRef LinkageName, DIFile *File, unsigned LineNo, DISubroutineType *Ty, bool isLocalToUnit, bool isDefinition, unsigned Virtuality = 0, unsigned VTableIndex = 0, DIType *VTableHolder = nullptr, unsigned Flags = 0, bool isOptimized = false, DITemplateParameterArray TParams = nullptr); /// This creates new descriptor for a namespace with the specified /// parent scope. /// \param Scope Namespace scope /// \param Name Name of this namespace /// \param File Source file /// \param LineNo Line number DINamespace *createNameSpace(DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNo); /// This creates new descriptor for a module with the specified /// parent scope. /// \param Scope Parent scope /// \param Name Name of this module /// \param ConfigurationMacros /// A space-separated shell-quoted list of -D macro /// definitions as they would appear on a command line. /// \param IncludePath The path to the module map file. /// \param ISysRoot The clang system root (value of -isysroot). DIModule *createModule(DIScope *Scope, StringRef Name, StringRef ConfigurationMacros, StringRef IncludePath, StringRef ISysRoot); /// This creates a descriptor for a lexical block with a new file /// attached. This merely extends the existing /// lexical block as it crosses a file. /// \param Scope Lexical block. /// \param File Source file. /// \param Discriminator DWARF path discriminator value. DILexicalBlockFile *createLexicalBlockFile(DIScope *Scope, DIFile *File, unsigned Discriminator = 0); /// This creates a descriptor for a lexical block with the /// specified parent context. /// \param Scope Parent lexical scope. /// \param File Source file. /// \param Line Line number. /// \param Col Column number. DILexicalBlock *createLexicalBlock(DIScope *Scope, DIFile *File, unsigned Line, unsigned Col); /// Create a descriptor for an imported module. /// \param Context The scope this module is imported into /// \param NS The namespace being imported here /// \param Line Line number DIImportedEntity *createImportedModule(DIScope *Context, DINamespace *NS, unsigned Line); /// Create a descriptor for an imported module. /// \param Context The scope this module is imported into /// \param NS An aliased namespace /// \param Line Line number DIImportedEntity *createImportedModule(DIScope *Context, DIImportedEntity *NS, unsigned Line); /// Create a descriptor for an imported module. /// \param Context The scope this module is imported into /// \param M The module being imported here /// \param Line Line number DIImportedEntity *createImportedModule(DIScope *Context, DIModule *M, unsigned Line); /// Create a descriptor for an imported function. /// \param Context The scope this module is imported into /// \param Decl The declaration (or definition) of a function, type, or /// variable /// \param Line Line number DIImportedEntity *createImportedDeclaration(DIScope *Context, DINode *Decl, unsigned Line, StringRef Name = ""); /// Insert a new llvm.dbg.declare intrinsic call. /// \param Storage llvm::Value of the variable /// \param VarInfo Variable's debug info descriptor. /// \param Expr A complex location expression. /// \param DL Debug info location. /// \param InsertAtEnd Location for the new intrinsic. Instruction *insertDeclare(llvm::Value *Storage, DILocalVariable *VarInfo, DIExpression *Expr, const DILocation *DL, BasicBlock *InsertAtEnd); /// Insert a new llvm.dbg.declare intrinsic call. /// \param Storage llvm::Value of the variable /// \param VarInfo Variable's debug info descriptor. /// \param Expr A complex location expression. /// \param DL Debug info location. /// \param InsertBefore Location for the new intrinsic. Instruction *insertDeclare(llvm::Value *Storage, DILocalVariable *VarInfo, DIExpression *Expr, const DILocation *DL, Instruction *InsertBefore); /// Insert a new llvm.dbg.value intrinsic call. /// \param Val llvm::Value of the variable /// \param Offset Offset /// \param VarInfo Variable's debug info descriptor. /// \param Expr A complex location expression. /// \param DL Debug info location. /// \param InsertAtEnd Location for the new intrinsic. Instruction *insertDbgValueIntrinsic(llvm::Value *Val, uint64_t Offset, DILocalVariable *VarInfo, DIExpression *Expr, const DILocation *DL, BasicBlock *InsertAtEnd); /// Insert a new llvm.dbg.value intrinsic call. /// \param Val llvm::Value of the variable /// \param Offset Offset /// \param VarInfo Variable's debug info descriptor. /// \param Expr A complex location expression. /// \param DL Debug info location. /// \param InsertBefore Location for the new intrinsic. Instruction *insertDbgValueIntrinsic(llvm::Value *Val, uint64_t Offset, DILocalVariable *VarInfo, DIExpression *Expr, const DILocation *DL, Instruction *InsertBefore); /// Replace the vtable holder in the given composite type. /// /// If this creates a self reference, it may orphan some unresolved cycles /// in the operands of \c T, so \a DIBuilder needs to track that. void replaceVTableHolder(DICompositeType *&T, DICompositeType *VTableHolder); /// Replace arrays on a composite type. /// /// If \c T is resolved, but the arrays aren't -- which can happen if \c T /// has a self-reference -- \a DIBuilder needs to track the array to /// resolve cycles. void replaceArrays(DICompositeType *&T, DINodeArray Elements, DINodeArray TParams = DINodeArray()); /// Replace a temporary node. /// /// Call \a MDNode::replaceAllUsesWith() on \c N, replacing it with \c /// Replacement. /// /// If \c Replacement is the same as \c N.get(), instead call \a /// MDNode::replaceWithUniqued(). In this case, the uniqued node could /// have a different address, so we return the final address. template <class NodeTy> NodeTy *replaceTemporary(TempMDNode &&N, NodeTy *Replacement) { if (N.get() == Replacement) return cast<NodeTy>(MDNode::replaceWithUniqued(std::move(N))); N->replaceAllUsesWith(Replacement); return Replacement; } }; } // end namespace llvm #endif