X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=lib%2FCodeGen%2FAsmPrinter%2FDwarfUnit.h;h=e8fd13e574a61ca6d15a5a68fb43da602306cf03;hp=96ef40d94ddc6f008367a7d69804cca49d618e76;hb=92b3bf95a1846e16bb85929544747b1c074b2fab;hpb=5410b5acda1c8a9726d008a46b382eaa83a52443 diff --git a/lib/CodeGen/AsmPrinter/DwarfUnit.h b/lib/CodeGen/AsmPrinter/DwarfUnit.h index 96ef40d94dd..e8fd13e574a 100644 --- a/lib/CodeGen/AsmPrinter/DwarfUnit.h +++ b/lib/CodeGen/AsmPrinter/DwarfUnit.h @@ -11,20 +11,20 @@ // //===----------------------------------------------------------------------===// -#ifndef CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H -#define CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H +#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFUNIT_H +#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFUNIT_H -#include "DIE.h" #include "DwarfDebug.h" #include "llvm/ADT/DenseMap.h" #include "llvm/ADT/Optional.h" #include "llvm/ADT/StringMap.h" #include "llvm/CodeGen/AsmPrinter.h" +#include "llvm/CodeGen/DIE.h" #include "llvm/IR/DIBuilder.h" #include "llvm/IR/DebugInfo.h" +#include "llvm/MC/MCDwarf.h" #include "llvm/MC/MCExpr.h" #include "llvm/MC/MCSection.h" -#include "llvm/MC/MCDwarf.h" namespace llvm { @@ -55,385 +55,272 @@ private: SmallVector Ranges; public: - RangeSpanList(MCSymbol *Sym) : RangeSym(Sym) {} + RangeSpanList(MCSymbol *Sym, SmallVector Ranges) + : RangeSym(Sym), Ranges(std::move(Ranges)) {} MCSymbol *getSym() const { return RangeSym; } const SmallVectorImpl &getRanges() const { return Ranges; } void addRange(RangeSpan Range) { Ranges.push_back(Range); } }; //===----------------------------------------------------------------------===// -/// Unit - This dwarf writer support class manages information associated -/// with a source file. +/// This dwarf writer support class manages information associated with a +/// source file. class DwarfUnit { protected: - /// UniqueID - a numeric ID unique among all CUs in the module + /// A numeric ID unique among all CUs in the module unsigned UniqueID; - /// Node - MDNode for the compile unit. + /// MDNode for the compile unit. DICompileUnit CUNode; /// Unit debug information entry. - const std::unique_ptr UnitDie; + DIE UnitDie; /// Offset of the UnitDie from beginning of debug info section. unsigned DebugInfoOffset; - /// Asm - Target of Dwarf emission. + /// Target of Dwarf emission. AsmPrinter *Asm; // Holders for some common dwarf information. DwarfDebug *DD; DwarfFile *DU; - /// IndexTyDie - An anonymous type for index type. Owned by UnitDie. + /// An anonymous type for index type. Owned by UnitDie. DIE *IndexTyDie; - /// MDNodeToDieMap - Tracks the mapping of unit level debug information - /// variables to debug information entries. + /// Tracks the mapping of unit level debug information variables to debug + /// information entries. DenseMap MDNodeToDieMap; - /// MDNodeToDIEEntryMap - Tracks the mapping of unit level debug information - /// descriptors to debug information entries using a DIEEntry proxy. + /// Tracks the mapping of unit level debug information descriptors to debug + /// information entries using a DIEEntry proxy. DenseMap MDNodeToDIEEntryMap; - /// GlobalNames - A map of globally visible named entities for this unit. - StringMap GlobalNames; - - /// GlobalTypes - A map of globally visible types for this unit. - StringMap GlobalTypes; - - /// DIEBlocks - A list of all the DIEBlocks in use. + /// A list of all the DIEBlocks in use. std::vector DIEBlocks; - - /// DIELocs - A list of all the DIELocs in use. + + /// A list of all the DIELocs in use. std::vector DIELocs; - /// ContainingTypeMap - This map is used to keep track of subprogram DIEs that - /// need DW_AT_containing_type attribute. This attribute points to a DIE that + /// This map is used to keep track of subprogram DIEs that need + /// DW_AT_containing_type attribute. This attribute points to a DIE that /// corresponds to the MDNode mapped with the subprogram DIE. - DenseMap ContainingTypeMap; - - // List of ranges for a given compile unit. - SmallVector CURanges; + DenseMap ContainingTypeMap; - // List of range lists for a given compile unit, separate from the ranges for - // the CU itself. - SmallVector CURangeLists; - - // DIEValueAllocator - All DIEValues are allocated through this allocator. + // All DIEValues are allocated through this allocator. BumpPtrAllocator DIEValueAllocator; - // DIEIntegerOne - A preallocated DIEValue because 1 is used frequently. + // A preallocated DIEValue because 1 is used frequently. DIEInteger *DIEIntegerOne; /// The section this unit will be emitted in. const MCSection *Section; - /// A label at the start of the non-dwo section related to this unit. - MCSymbol *SectionSym; - - /// The start of the unit within its section. - MCSymbol *LabelBegin; - - /// The end of the unit within its section. - MCSymbol *LabelEnd; + DwarfUnit(unsigned UID, dwarf::Tag, DICompileUnit CU, AsmPrinter *A, + DwarfDebug *DW, DwarfFile *DWU); - /// The label for the start of the range sets for the elements of this unit. - MCSymbol *LabelRange; + /// \brief Add a string attribute data and value. + /// + /// This is guaranteed to be in the local string pool instead of indirected. + void addLocalString(DIE &Die, dwarf::Attribute Attribute, StringRef Str); - /// Skeleton unit associated with this unit. - DwarfUnit *Skeleton; + void addIndexedString(DIE &Die, dwarf::Attribute Attribute, StringRef Str); - DwarfUnit(unsigned UID, DIE *D, DICompileUnit CU, AsmPrinter *A, - DwarfDebug *DW, DwarfFile *DWU); + bool applySubprogramDefinitionAttributes(DISubprogram SP, DIE &SPDie); public: virtual ~DwarfUnit(); - /// Set the skeleton unit associated with this unit. - void setSkeleton(DwarfUnit &Skel) { Skeleton = &Skel; } - - /// Get the skeleton unit associated with this unit. - DwarfUnit *getSkeleton() const { return Skeleton; } - - /// Pass in the SectionSym even though we could recreate it in every compile - /// unit (type units will have actually distinct symbols once they're in - /// comdat sections). - void initSection(const MCSection *Section, MCSymbol *SectionSym) { - assert(!this->Section); - this->Section = Section; - this->SectionSym = SectionSym; - this->LabelBegin = - Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID()); - this->LabelEnd = - Asm->GetTempSymbol(Section->getLabelEndName(), getUniqueID()); - this->LabelRange = Asm->GetTempSymbol("gnu_ranges", getUniqueID()); - } + void initSection(const MCSection *Section); const MCSection *getSection() const { assert(Section); return Section; } - /// If there's a skeleton then return the section symbol for the skeleton - /// unit, otherwise return the section symbol for this unit. - MCSymbol *getLocalSectionSym() const { - if (Skeleton) - return Skeleton->getSectionSym(); - return getSectionSym(); - } - - MCSymbol *getSectionSym() const { - assert(Section); - return SectionSym; - } - - /// If there's a skeleton then return the begin label for the skeleton unit, - /// otherwise return the local label for this unit. - MCSymbol *getLocalLabelBegin() const { - if (Skeleton) - return Skeleton->getLabelBegin(); - return getLabelBegin(); - } - - MCSymbol *getLabelBegin() const { - assert(Section); - return LabelBegin; - } - - MCSymbol *getLabelEnd() const { - assert(Section); - return LabelEnd; - } - - MCSymbol *getLabelRange() const { - assert(Section); - return LabelRange; - } - // Accessors. + AsmPrinter* getAsmPrinter() const { return Asm; } unsigned getUniqueID() const { return UniqueID; } - uint16_t getLanguage() const { return CUNode.getLanguage(); } + uint16_t getLanguage() const { return CUNode->getSourceLanguage(); } DICompileUnit getCUNode() const { return CUNode; } - DIE &getUnitDie() const { return *UnitDie; } - const StringMap &getGlobalNames() const { return GlobalNames; } - const StringMap &getGlobalTypes() const { return GlobalTypes; } + DIE &getUnitDie() { return UnitDie; } unsigned getDebugInfoOffset() const { return DebugInfoOffset; } void setDebugInfoOffset(unsigned DbgInfoOff) { DebugInfoOffset = DbgInfoOff; } - /// hasContent - Return true if this compile unit has something to write out. - bool hasContent() const { return !UnitDie->getChildren().empty(); } - - /// addRange - Add an address range to the list of ranges for this unit. - void addRange(RangeSpan Range); - - /// getRanges - Get the list of ranges for this unit. - const SmallVectorImpl &getRanges() const { return CURanges; } - SmallVectorImpl &getRanges() { return CURanges; } - - /// addRangeList - Add an address range list to the list of range lists. - void addRangeList(RangeSpanList Ranges) { CURangeLists.push_back(Ranges); } + /// \brief Return true if this compile unit has something to write out. + bool hasContent() const { return !UnitDie.getChildren().empty(); } - /// getRangeLists - Get the vector of range lists. - const SmallVectorImpl &getRangeLists() const { - return CURangeLists; + /// \brief Get string containing language specific context for a global name. + /// + /// Walks the metadata parent chain in a language specific manner (using the + /// compile unit language) and returns it as a string. This is done at the + /// metadata level because DIEs may not currently have been added to the + /// parent context and walking the DIEs looking for names is more expensive + /// than walking the metadata. + std::string getParentContextString(const MDScope *Context) const; + + /// Add a new global name to the compile unit. + virtual void addGlobalName(StringRef Name, DIE &Die, const MDScope *Context) { } - SmallVectorImpl &getRangeLists() { return CURangeLists; } - - /// getParentContextString - Get a string containing the language specific - /// context for a global name. - std::string getParentContextString(DIScope Context) const; - /// addGlobalName - Add a new global entity to the compile unit. - /// - void addGlobalName(StringRef Name, DIE &Die, DIScope Context); + /// Add a new global type to the compile unit. + virtual void addGlobalType(const MDType *Ty, const DIE &Die, + const MDScope *Context) {} - /// addAccelNamespace - Add a new name to the namespace accelerator table. + /// \brief Add a new name to the namespace accelerator table. void addAccelNamespace(StringRef Name, const DIE &Die); - /// getDIE - Returns the debug information entry map slot for the - /// specified debug variable. We delegate the request to DwarfDebug - /// when the MDNode can be part of the type system, since DIEs for - /// the type system can be shared across CUs and the mappings are - /// kept in DwarfDebug. - DIE *getDIE(DIDescriptor D) const; + /// \brief Returns the DIE map slot for the specified debug variable. + /// + /// We delegate the request to DwarfDebug when the MDNode can be part of the + /// type system, since DIEs for the type system can be shared across CUs and + /// the mappings are kept in DwarfDebug. + DIE *getDIE(const DebugNode *D) const; - /// getDIELoc - Returns a fresh newly allocated DIELoc. + /// \brief Returns a fresh newly allocated DIELoc. DIELoc *getDIELoc() { return new (DIEValueAllocator) DIELoc(); } - /// insertDIE - Insert DIE into the map. We delegate the request to DwarfDebug - /// when the MDNode can be part of the type system, since DIEs for - /// the type system can be shared across CUs and the mappings are - /// kept in DwarfDebug. - void insertDIE(DIDescriptor Desc, DIE *D); - - /// addDie - Adds or interns the DIE to the compile unit. + /// \brief Insert DIE into the map. /// - void addDie(DIE *Buffer) { UnitDie->addChild(Buffer); } + /// We delegate the request to DwarfDebug when the MDNode can be part of the + /// type system, since DIEs for the type system can be shared across CUs and + /// the mappings are kept in DwarfDebug. + void insertDIE(const DebugNode *Desc, DIE *D); - /// addFlag - Add a flag that is true to the DIE. + /// \brief Add a flag that is true to the DIE. void addFlag(DIE &Die, dwarf::Attribute Attribute); - /// addUInt - Add an unsigned integer attribute data and value. + /// \brief Add an unsigned integer attribute data and value. void addUInt(DIE &Die, dwarf::Attribute Attribute, Optional Form, uint64_t Integer); void addUInt(DIE &Block, dwarf::Form Form, uint64_t Integer); - /// addSInt - Add an signed integer attribute data and value. + /// \brief Add an signed integer attribute data and value. void addSInt(DIE &Die, dwarf::Attribute Attribute, Optional Form, int64_t Integer); void addSInt(DIELoc &Die, Optional Form, int64_t Integer); - /// addString - Add a string attribute data and value. - void addString(DIE &Die, dwarf::Attribute Attribute, const StringRef Str); - - /// addLocalString - Add a string attribute data and value. - void addLocalString(DIE &Die, dwarf::Attribute Attribute, - const StringRef Str); - - /// addExpr - Add a Dwarf expression attribute data and value. - void addExpr(DIELoc &Die, dwarf::Form Form, const MCExpr *Expr); + /// \brief Add a string attribute data and value. + /// + /// We always emit a reference to the string pool instead of immediate + /// strings so that DIEs have more predictable sizes. In the case of split + /// dwarf we emit an index into another table which gets us the static offset + /// into the string table. + void addString(DIE &Die, dwarf::Attribute Attribute, StringRef Str); - /// addLabel - Add a Dwarf label attribute data and value. + /// \brief Add a Dwarf label attribute data and value. void addLabel(DIE &Die, dwarf::Attribute Attribute, dwarf::Form Form, const MCSymbol *Label); void addLabel(DIELoc &Die, dwarf::Form Form, const MCSymbol *Label); - /// addLocationList - Add a Dwarf loclistptr attribute data and value. - void addLocationList(DIE &Die, dwarf::Attribute Attribute, unsigned Index); - - /// addSectionLabel - Add a Dwarf section label attribute data and value. - /// - void addSectionLabel(DIE &Die, dwarf::Attribute Attribute, - const MCSymbol *Label); - - /// addSectionOffset - Add an offset into a section attribute data and value. - /// + /// \brief Add an offset into a section attribute data and value. void addSectionOffset(DIE &Die, dwarf::Attribute Attribute, uint64_t Integer); - /// addOpAddress - Add a dwarf op address data and value using the - /// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index. + /// \brief Add a dwarf op address data and value using the form given and an + /// op of either DW_FORM_addr or DW_FORM_GNU_addr_index. void addOpAddress(DIELoc &Die, const MCSymbol *Label); - /// addSectionDelta - Add a label delta attribute data and value. - void addSectionDelta(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Hi, - const MCSymbol *Lo); - - /// addLabelDelta - Add a label delta attribute data and value. + /// \brief Add a label delta attribute data and value. void addLabelDelta(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Hi, const MCSymbol *Lo); - /// addDIEEntry - Add a DIE attribute data and value. - void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIE *Entry); + /// \brief Add a DIE attribute data and value. + void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIE &Entry); - /// addDIEEntry - Add a DIE attribute data and value. + /// \brief Add a DIE attribute data and value. void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIEEntry *Entry); void addDIETypeSignature(DIE &Die, const DwarfTypeUnit &Type); - /// addBlock - Add block data. + /// \brief Add block data. void addBlock(DIE &Die, dwarf::Attribute Attribute, DIELoc *Block); - /// addBlock - Add block data. + /// \brief Add block data. void addBlock(DIE &Die, dwarf::Attribute Attribute, DIEBlock *Block); - /// addSourceLine - Add location information to specified debug information - /// entry. + /// \brief Add location information to specified debug information entry. void addSourceLine(DIE &Die, unsigned Line, StringRef File, StringRef Directory); void addSourceLine(DIE &Die, DIVariable V); void addSourceLine(DIE &Die, DIGlobalVariable G); void addSourceLine(DIE &Die, DISubprogram SP); - void addSourceLine(DIE &Die, DIType Ty); + void addSourceLine(DIE &Die, const MDType *Ty); void addSourceLine(DIE &Die, DINameSpace NS); void addSourceLine(DIE &Die, DIObjCProperty Ty); - /// addAddress - Add an address attribute to a die based on the location - /// provided. - void addAddress(DIE &Die, dwarf::Attribute Attribute, - const MachineLocation &Location, bool Indirect = false); - - /// addConstantValue - Add constant value entry in variable DIE. - void addConstantValue(DIE &Die, const MachineOperand &MO, DIType Ty); - void addConstantValue(DIE &Die, const ConstantInt *CI, bool Unsigned); + /// \brief Add constant value entry in variable DIE. + void addConstantValue(DIE &Die, const MachineOperand &MO, const MDType *Ty); + void addConstantValue(DIE &Die, const ConstantInt *CI, const MDType *Ty); + void addConstantValue(DIE &Die, const APInt &Val, const MDType *Ty); void addConstantValue(DIE &Die, const APInt &Val, bool Unsigned); + void addConstantValue(DIE &Die, bool Unsigned, uint64_t Val); - /// addConstantFPValue - Add constant value entry in variable DIE. + /// \brief Add constant value entry in variable DIE. void addConstantFPValue(DIE &Die, const MachineOperand &MO); void addConstantFPValue(DIE &Die, const ConstantFP *CFP); - /// addTemplateParams - Add template parameters in buffer. - void addTemplateParams(DIE &Buffer, DIArray TParams); + /// \brief Add a linkage name, if it isn't empty. + void addLinkageName(DIE &Die, StringRef LinkageName); - /// addRegisterOp - Add register operand. - void addRegisterOp(DIELoc &TheDie, unsigned Reg); + /// \brief Add template parameters in buffer. + void addTemplateParams(DIE &Buffer, DIArray TParams); - /// addRegisterOffset - Add register offset. - void addRegisterOffset(DIELoc &TheDie, unsigned Reg, int64_t Offset); + /// \brief Add register operand. + /// \returns false if the register does not exist, e.g., because it was never + /// materialized. + bool addRegisterOpPiece(DIELoc &TheDie, unsigned Reg, + unsigned SizeInBits = 0, unsigned OffsetInBits = 0); - /// addComplexAddress - Start with the address based on the location provided, - /// and generate the DWARF information necessary to find the actual variable - /// (navigating the extra location information encoded in the type) based on - /// the starting location. Add the DWARF information to the die. - void addComplexAddress(const DbgVariable &DV, DIE &Die, - dwarf::Attribute Attribute, - const MachineLocation &Location); + /// \brief Add register offset. + /// \returns false if the register does not exist, e.g., because it was never + /// materialized. + bool addRegisterOffset(DIELoc &TheDie, unsigned Reg, int64_t Offset); // FIXME: Should be reformulated in terms of addComplexAddress. - /// addBlockByrefAddress - Start with the address based on the location - /// provided, and generate the DWARF information necessary to find the - /// actual Block variable (navigating the Block struct) based on the - /// starting location. Add the DWARF information to the die. Obsolete, - /// please use addComplexAddress instead. + /// Start with the address based on the location provided, and generate the + /// DWARF information necessary to find the actual Block variable (navigating + /// the Block struct) based on the starting location. Add the DWARF + /// information to the die. Obsolete, please use addComplexAddress instead. void addBlockByrefAddress(const DbgVariable &DV, DIE &Die, dwarf::Attribute Attribute, const MachineLocation &Location); - /// addVariableAddress - Add DW_AT_location attribute for a - /// DbgVariable based on provided MachineLocation. - void addVariableAddress(const DbgVariable &DV, DIE &Die, - MachineLocation Location); - - /// addType - Add a new type attribute to the specified entity. This takes - /// and attribute parameter because DW_AT_friend attributes are also - /// type references. - void addType(DIE &Entity, DIType Ty, + /// \brief Add a new type attribute to the specified entity. + /// + /// This takes and attribute parameter because DW_AT_friend attributes are + /// also type references. + void addType(DIE &Entity, const MDType *Ty, dwarf::Attribute Attribute = dwarf::DW_AT_type); - /// getOrCreateNameSpace - Create a DIE for DINameSpace. DIE *getOrCreateNameSpace(DINameSpace NS); + DIE *getOrCreateSubprogramDIE(DISubprogram SP, bool Minimal = false); - /// getOrCreateSubprogramDIE - Create new DIE using SP. - DIE *getOrCreateSubprogramDIE(DISubprogram SP); + void applySubprogramAttributes(DISubprogram SP, DIE &SPDie, + bool Minimal = false); - /// getOrCreateTypeDIE - Find existing DIE or create new DIE for the - /// given DIType. + /// \brief Find existing DIE or create new DIE for the given type. DIE *getOrCreateTypeDIE(const MDNode *N); - /// getOrCreateContextDIE - Get context owner's DIE. - DIE *createTypeDIE(DICompositeType Ty); + /// \brief Get context owner's DIE. + DIE *createTypeDIE(const MDCompositeType *Ty); - /// getOrCreateContextDIE - Get context owner's DIE. - DIE *getOrCreateContextDIE(DIScope Context); + /// \brief Get context owner's DIE. + DIE *getOrCreateContextDIE(const MDScope *Context); - /// constructContainingTypeDIEs - Construct DIEs for types that contain - /// vtables. + /// \brief Construct DIEs for types that contain vtables. void constructContainingTypeDIEs(); - /// constructVariableDIE - Construct a DIE for the given DbgVariable. - DIE *constructVariableDIE(DbgVariable &DV, bool isScopeAbstract); - - /// constructSubprogramArguments - Construct function argument DIEs. - void constructSubprogramArguments(DIE &Buffer, DIArray Args); + /// \brief Construct function argument DIEs. + void constructSubprogramArguments(DIE &Buffer, DITypeArray Args); /// Create a DIE with the given Tag, add the DIE to its parent, and /// call insertDIE if MD is not null. - DIE *createAndAddDIE(unsigned Tag, DIE &Parent, - DIDescriptor N = DIDescriptor()); + DIE &createAndAddDIE(unsigned Tag, DIE &Parent, const DebugNode *N = nullptr); /// Compute the size of a header for this unit, not including the initial /// length field. @@ -444,132 +331,83 @@ public: } /// Emit the header for this unit, not including the initial length field. - virtual void emitHeader(const MCSymbol *ASectionSym) const; + virtual void emitHeader(bool UseOffsets); virtual DwarfCompileUnit &getCU() = 0; + void constructTypeDIE(DIE &Buffer, const MDCompositeType *CTy); + protected: - /// getOrCreateStaticMemberDIE - Create new static data member DIE. - DIE *getOrCreateStaticMemberDIE(DIDerivedType DT); + /// \brief Create new static data member DIE. + DIE *getOrCreateStaticMemberDIE(const MDDerivedType *DT); /// Look up the source ID with the given directory and source file names. If /// none currently exists, create a new ID and insert it in the line table. virtual unsigned getOrCreateSourceID(StringRef File, StringRef Directory) = 0; -private: - /// \brief Construct a DIE for the given DbgVariable without initializing the - /// DbgVariable's DIE reference. - DIE *constructVariableDIEImpl(const DbgVariable &DV, bool isScopeAbstract); - - /// constructTypeDIE - Construct basic type die from DIBasicType. - void constructTypeDIE(DIE &Buffer, DIBasicType BTy); - - /// constructTypeDIE - Construct derived type die from DIDerivedType. - void constructTypeDIE(DIE &Buffer, DIDerivedType DTy); - - /// constructTypeDIE - Construct type DIE from DICompositeType. - void constructTypeDIE(DIE &Buffer, DICompositeType CTy); + /// \brief Look in the DwarfDebug map for the MDNode that corresponds to the + /// reference. + template T *resolve(TypedDebugNodeRef Ref) const { + return DD->resolve(Ref); + } - /// constructSubrangeDIE - Construct subrange DIE from DISubrange. +private: + void constructTypeDIE(DIE &Buffer, const MDBasicType *BTy); + void constructTypeDIE(DIE &Buffer, const MDDerivedType *DTy); + void constructTypeDIE(DIE &Buffer, const MDSubroutineType *DTy); void constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy); - - /// constructArrayTypeDIE - Construct array type DIE from DICompositeType. - void constructArrayTypeDIE(DIE &Buffer, DICompositeType CTy); - - /// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator. - void constructEnumTypeDIE(DIE &Buffer, DICompositeType CTy); - - /// constructMemberDIE - Construct member DIE from DIDerivedType. - void constructMemberDIE(DIE &Buffer, DIDerivedType DT); - - /// constructTemplateTypeParameterDIE - Construct new DIE for the given - /// DITemplateTypeParameter. + void constructArrayTypeDIE(DIE &Buffer, const MDCompositeType *CTy); + void constructEnumTypeDIE(DIE &Buffer, const MDCompositeType *CTy); + void constructMemberDIE(DIE &Buffer, const MDDerivedType *DT); void constructTemplateTypeParameterDIE(DIE &Buffer, DITemplateTypeParameter TP); - - /// constructTemplateValueParameterDIE - Construct new DIE for the given - /// DITemplateValueParameter. void constructTemplateValueParameterDIE(DIE &Buffer, DITemplateValueParameter TVP); - /// getLowerBoundDefault - Return the default lower bound for an array. If the - /// DWARF version doesn't handle the language, return -1. + /// \brief Return the default lower bound for an array. + /// + /// If the DWARF version doesn't handle the language, return -1. int64_t getDefaultLowerBound() const; - /// getDIEEntry - Returns the debug information entry for the specified - /// debug variable. + /// \brief Returns the DIE entry for the specified debug variable. DIEEntry *getDIEEntry(const MDNode *N) const { return MDNodeToDIEEntryMap.lookup(N); } - /// insertDIEEntry - Insert debug information entry into the map. + /// \brief Insert debug information entry into the map. void insertDIEEntry(const MDNode *N, DIEEntry *E) { MDNodeToDIEEntryMap.insert(std::make_pair(N, E)); } - // getIndexTyDie - Get an anonymous type for index type. - DIE *getIndexTyDie() { return IndexTyDie; } + /// \brief Get an anonymous type for index type. + DIE *getIndexTyDie(); - // setIndexTyDie - Set D as anonymous type for index which can be reused - // later. + /// \brief Set D as anonymous type for index which can be reused later. void setIndexTyDie(DIE *D) { IndexTyDie = D; } - /// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug - /// information entry. - DIEEntry *createDIEEntry(DIE *Entry); - - /// resolve - Look in the DwarfDebug map for the MDNode that - /// corresponds to the reference. - template T resolve(DIRef Ref) const { - return DD->resolve(Ref); - } + /// \brief Creates a new DIEEntry to be a proxy for a debug information + /// entry. + DIEEntry *createDIEEntry(DIE &Entry); /// If this is a named finished type then include it in the list of types for /// the accelerator tables. - void updateAcceleratorTables(DIScope Context, DIType Ty, const DIE *TyDIE); -}; - -class DwarfCompileUnit : public DwarfUnit { - /// The attribute index of DW_AT_stmt_list in the compile unit DIE, avoiding - /// the need to search for it in applyStmtList. - unsigned stmtListIndex; - -public: - DwarfCompileUnit(unsigned UID, DIE *D, DICompileUnit Node, AsmPrinter *A, - DwarfDebug *DW, DwarfFile *DWU); - - void initStmtList(MCSymbol *DwarfLineSectionSym); - - /// Apply the DW_AT_stmt_list from this compile unit to the specified DIE. - void applyStmtList(DIE &D); + void updateAcceleratorTables(const MDScope *Context, const MDType *Ty, + const DIE &TyDIE); - /// createGlobalVariableDIE - create global variable DIE. - void createGlobalVariableDIE(DIGlobalVariable GV); - - /// addLabelAddress - Add a dwarf label attribute data and value using - /// either DW_FORM_addr or DW_FORM_GNU_addr_index. - void addLabelAddress(DIE &Die, dwarf::Attribute Attribute, - const MCSymbol *Label); - - /// addLocalLabelAddress - Add a dwarf label attribute data and value using - /// DW_FORM_addr only. - void addLocalLabelAddress(DIE &Die, dwarf::Attribute Attribute, - const MCSymbol *Label); - - DwarfCompileUnit &getCU() override { return *this; } - - unsigned getOrCreateSourceID(StringRef FileName, StringRef DirName) override; + virtual bool isDwoUnit() const = 0; }; class DwarfTypeUnit : public DwarfUnit { -private: uint64_t TypeSignature; const DIE *Ty; DwarfCompileUnit &CU; MCDwarfDwoLineTable *SplitLineTable; + unsigned getOrCreateSourceID(StringRef File, StringRef Directory) override; + bool isDwoUnit() const override; + public: - DwarfTypeUnit(unsigned UID, DIE *D, DwarfCompileUnit &CU, AsmPrinter *A, + DwarfTypeUnit(unsigned UID, DwarfCompileUnit &CU, AsmPrinter *A, DwarfDebug *DW, DwarfFile *DWU, MCDwarfDwoLineTable *SplitLineTable = nullptr); @@ -578,16 +416,12 @@ public: void setType(const DIE *Ty) { this->Ty = Ty; } /// Emit the header for this unit, not including the initial length field. - void emitHeader(const MCSymbol *ASectionSym) const override; + void emitHeader(bool UseOffsets) override; unsigned getHeaderSize() const override { return DwarfUnit::getHeaderSize() + sizeof(uint64_t) + // Type Signature sizeof(uint32_t); // Type DIE Offset } - void initSection(const MCSection *Section); DwarfCompileUnit &getCU() override { return CU; } - -protected: - unsigned getOrCreateSourceID(StringRef File, StringRef Directory) override; }; } // end llvm namespace #endif