X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=lib%2FCodeGen%2FAsmPrinter%2FDwarfCompileUnit.h;h=c9b365c6ce269d93632c95ae577514c528df1f47;hp=77bf6a9e50585fe62318c030bfb6a9318d705a8c;hb=da53f1e088ad594f604c950c6a9c62d7b6356b88;hpb=c5ef7eee3c412b0f334e395b0cf7c363200c2f79 diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h index 77bf6a9e505..c9b365c6ce2 100644 --- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h +++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h @@ -11,368 +11,186 @@ // //===----------------------------------------------------------------------===// -#ifndef CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H -#define CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H +#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H +#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H -#include "DIE.h" -#include "llvm/ADT/DenseMap.h" -#include "llvm/ADT/OwningPtr.h" -#include "llvm/ADT/StringMap.h" -#include "llvm/DebugInfo.h" +#include "DwarfUnit.h" +#include "llvm/Support/Dwarf.h" +#include "llvm/ADT/StringRef.h" +#include "llvm/IR/DebugInfo.h" namespace llvm { +class AsmPrinter; +class DIE; class DwarfDebug; -class DwarfUnits; -class MachineLocation; -class MachineOperand; -class ConstantInt; -class ConstantFP; -class DbgVariable; +class DwarfFile; +class MCSymbol; +class LexicalScope; -//===----------------------------------------------------------------------===// -/// CompileUnit - This dwarf writer support class manages information associated -/// with a source file. -class CompileUnit { - /// UniqueID - a numeric ID unique among all CUs in the module - /// - unsigned UniqueID; - - /// Language - The DW_AT_language of the compile unit - /// - unsigned Language; - - /// Die - Compile unit debug information entry. - /// - const OwningPtr CUDie; - - /// Asm - Target of Dwarf emission. - AsmPrinter *Asm; - - // Holders for some common dwarf information. - DwarfDebug *DD; - DwarfUnits *DU; - - /// IndexTyDie - An anonymous type for index type. Owned by CUDie. - DIE *IndexTyDie; +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; - /// MDNodeToDieMap - Tracks the mapping of unit level debug informaton - /// variables to debug information entries. - DenseMap MDNodeToDieMap; + /// Skeleton unit associated with this unit. + DwarfCompileUnit *Skeleton; - /// MDNodeToDIEEntryMap - Tracks the mapping of unit level debug informaton - /// descriptors to debug information entries using a DIEEntry proxy. - DenseMap MDNodeToDIEEntryMap; + /// A label at the start of the non-dwo section related to this unit. + MCSymbol *SectionSym; - /// 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; - - /// AccelNames - A map of names for the name accelerator table. - /// - StringMap > AccelNames; - StringMap > AccelObjC; - StringMap > AccelNamespace; - StringMap > > AccelTypes; + /// The start of the unit within its section. + MCSymbol *LabelBegin; - /// DIEBlocks - A list of all the DIEBlocks in use. - std::vector DIEBlocks; - - /// 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 - /// corresponds to the MDNode mapped with the subprogram DIE. - DenseMap ContainingTypeMap; - - /// getLowerBoundDefault - Return the default lower bound for an array. If the - /// DWARF version doesn't handle the language, return -1. - int64_t getDefaultLowerBound() const; - - /// getOrCreateContextDIE - Get context owner's DIE. - DIE *getOrCreateContextDIE(DIDescriptor Context); + /// \brief Construct a DIE for the given DbgVariable without initializing the + /// DbgVariable's DIE reference. + std::unique_ptr constructVariableDIEImpl(const DbgVariable &DV, + bool Abstract); public: - CompileUnit(unsigned UID, unsigned L, DIE *D, AsmPrinter *A, DwarfDebug *DW, - DwarfUnits *); - ~CompileUnit(); - - // Accessors. - unsigned getUniqueID() const { return UniqueID; } - unsigned getLanguage() const { return Language; } - DIE* getCUDie() const { return CUDie.get(); } - const StringMap &getGlobalNames() const { return GlobalNames; } - const StringMap &getGlobalTypes() const { return GlobalTypes; } - - const StringMap > &getAccelNames() const { - return AccelNames; - } - const StringMap > &getAccelObjC() const { - return AccelObjC; - } - const StringMap > &getAccelNamespace() const { - return AccelNamespace; - } - const StringMap > > - &getAccelTypes() const { - return AccelTypes; - } - - /// hasContent - Return true if this compile unit has something to write out. - /// - bool hasContent() const { return !CUDie->getChildren().empty(); } - - /// addGlobalName - Add a new global entity to the compile unit. - /// - void addGlobalName(StringRef Name, DIE *Die) { GlobalNames[Name] = Die; } - - /// addGlobalType - Add a new global type to the compile unit. - /// - void addGlobalType(DIType Ty); + DwarfCompileUnit(unsigned UID, DICompileUnit Node, AsmPrinter *A, + DwarfDebug *DW, DwarfFile *DWU); - - /// addAccelName - Add a new name to the name accelerator table. - void addAccelName(StringRef Name, DIE *Die) { - std::vector &DIEs = AccelNames[Name]; - DIEs.push_back(Die); - } - void addAccelObjC(StringRef Name, DIE *Die) { - std::vector &DIEs = AccelObjC[Name]; - DIEs.push_back(Die); - } - void addAccelNamespace(StringRef Name, DIE *Die) { - std::vector &DIEs = AccelNamespace[Name]; - DIEs.push_back(Die); - } - void addAccelType(StringRef Name, std::pair Die) { - std::vector > &DIEs = AccelTypes[Name]; - DIEs.push_back(Die); + DwarfCompileUnit *getSkeleton() const { + return Skeleton; } - /// getDIE - Returns the debug information entry map slot for the - /// specified debug variable. - DIE *getDIE(const MDNode *N) { return MDNodeToDieMap.lookup(N); } + void initStmtList(MCSymbol *DwarfLineSectionSym); - DIEBlock *getDIEBlock() { - return new (DIEValueAllocator) DIEBlock(); - } + /// Apply the DW_AT_stmt_list from this compile unit to the specified DIE. + void applyStmtList(DIE &D); - /// insertDIE - Insert DIE into the map. - void insertDIE(const MDNode *N, DIE *D) { - MDNodeToDieMap.insert(std::make_pair(N, D)); - } - - /// getDIEEntry - Returns the debug information entry for the specified - /// debug variable. - DIEEntry *getDIEEntry(const MDNode *N) { - DenseMap::iterator I = - MDNodeToDIEEntryMap.find(N); - if (I == MDNodeToDIEEntryMap.end()) - return NULL; - return I->second; - } + /// getOrCreateGlobalVariableDIE - get or create global variable DIE. + DIE *getOrCreateGlobalVariableDIE(DIGlobalVariable GV); - /// insertDIEEntry - Insert debug information entry into the map. - void insertDIEEntry(const MDNode *N, DIEEntry *E) { - MDNodeToDIEEntryMap.insert(std::make_pair(N, E)); - } + /// 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); - /// addDie - Adds or interns the DIE to the compile unit. - /// - void addDie(DIE *Buffer) { - this->CUDie->addChild(Buffer); - } + /// addLocalLabelAddress - Add a dwarf label attribute data and value using + /// DW_FORM_addr only. + void addLocalLabelAddress(DIE &Die, dwarf::Attribute Attribute, + const MCSymbol *Label); - // getIndexTyDie - Get an anonymous type for index type. - DIE *getIndexTyDie() { - return IndexTyDie; - } + /// addSectionDelta - Add a label delta attribute data and value. + void addSectionDelta(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Hi, + const MCSymbol *Lo); - // setIndexTyDie - Set D as anonymous type for index which can be reused - // later. - void setIndexTyDie(DIE *D) { - IndexTyDie = D; - } + DwarfCompileUnit &getCU() override { return *this; } - /// addFlag - Add a flag that is true to the DIE. - void addFlag(DIE *Die, unsigned Attribute); + unsigned getOrCreateSourceID(StringRef FileName, StringRef DirName) override; - /// addUInt - Add an unsigned integer attribute data and value. - /// - void addUInt(DIE *Die, unsigned Attribute, unsigned Form, uint64_t Integer); + /// addRange - Add an address range to the list of ranges for this unit. + void addRange(RangeSpan Range); - /// addSInt - Add an signed integer attribute data and value. - /// - void addSInt(DIE *Die, unsigned Attribute, unsigned Form, int64_t Integer); + void attachLowHighPC(DIE &D, const MCSymbol *Begin, const MCSymbol *End); - /// addString - Add a string attribute data and value. + /// addSectionLabel - Add a Dwarf section label attribute data and value. /// - void addString(DIE *Die, unsigned Attribute, const StringRef Str); + void addSectionLabel(DIE &Die, dwarf::Attribute Attribute, + const MCSymbol *Label, const MCSymbol *Sec); - /// addLocalString - Add a string attribute data and value. - /// - void addLocalString(DIE *Die, unsigned Attribute, const StringRef Str); + /// \brief Find DIE for the given subprogram and attach appropriate + /// DW_AT_low_pc and DW_AT_high_pc attributes. If there are global + /// variables in this scope then create and insert DIEs for these + /// variables. + DIE &updateSubprogramScopeDIE(DISubprogram SP); - /// addLabel - Add a Dwarf label attribute data and value. - /// - void addLabel(DIE *Die, unsigned Attribute, unsigned Form, - const MCSymbol *Label); + void constructScopeDIE(LexicalScope *Scope, + SmallVectorImpl> &FinalChildren); - /// addLabelAddress - Add a dwarf label attribute data and value using - /// either DW_FORM_addr or DW_FORM_GNU_addr_index. - /// - void addLabelAddress(DIE *Die, unsigned Attribute, MCSymbol *Label); + /// \brief A helper function to construct a RangeSpanList for a given + /// lexical scope. + void addScopeRangeList(DIE &ScopeDIE, + const SmallVectorImpl &Range); - /// 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. - /// - void addOpAddress(DIE *Die, MCSymbol *Label); + void attachRangesOrLowHighPC(DIE &D, + const SmallVectorImpl &Ranges); - /// addDelta - Add a label delta attribute data and value. - /// - void addDelta(DIE *Die, unsigned Attribute, unsigned Form, - const MCSymbol *Hi, const MCSymbol *Lo); + /// \brief This scope represents inlined body of a function. Construct + /// DIE to represent this concrete inlined copy of the function. + std::unique_ptr constructInlinedScopeDIE(LexicalScope *Scope); - /// addDIEEntry - Add a DIE attribute data and value. - /// - void addDIEEntry(DIE *Die, unsigned Attribute, unsigned Form, DIE *Entry); + /// \brief Construct new DW_TAG_lexical_block for this scope and + /// attach DW_AT_low_pc/DW_AT_high_pc labels. + std::unique_ptr constructLexicalScopeDIE(LexicalScope *Scope); - /// addBlock - Add block data. - /// - void addBlock(DIE *Die, unsigned Attribute, unsigned Form, DIEBlock *Block); - - /// addSourceLine - Add location information to specified debug information - /// entry. - 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, 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, unsigned Attribute, - const MachineLocation &Location); - - /// addConstantValue - Add constant value entry in variable DIE. - bool addConstantValue(DIE *Die, const MachineOperand &MO, DIType Ty); - bool addConstantValue(DIE *Die, const ConstantInt *CI, bool Unsigned); - bool addConstantValue(DIE *Die, const APInt &Val, bool Unsigned); - - /// addConstantFPValue - Add constant value entry in variable DIE. - bool addConstantFPValue(DIE *Die, const MachineOperand &MO); - bool addConstantFPValue(DIE *Die, const ConstantFP *CFP); - - /// addTemplateParams - Add template parameters in buffer. - void addTemplateParams(DIE &Buffer, DIArray TParams); - - /// addRegisterOp - Add register operand. - void addRegisterOp(DIE *TheDie, unsigned Reg); - - /// addRegisterOffset - Add register offset. - void addRegisterOffset(DIE *TheDie, unsigned Reg, int64_t Offset); - - /// 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(DbgVariable *&DV, DIE *Die, unsigned Attribute, - const MachineLocation &Location); - - // 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. - /// - void addBlockByrefAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute, - const MachineLocation &Location); - - /// addVariableAddress - Add DW_AT_location attribute for a - /// DbgVariable based on provided MachineLocation. - void addVariableAddress(DbgVariable *&DV, DIE *Die, MachineLocation Location); - - /// addToContextOwner - Add Die into the list of its context owner's children. - void addToContextOwner(DIE *Die, DIDescriptor Context); - - /// 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, unsigned Attribute = dwarf::DW_AT_type); - - /// getOrCreateNameSpace - Create a DIE for DINameSpace. - DIE *getOrCreateNameSpace(DINameSpace NS); - - /// getOrCreateSubprogramDIE - Create new DIE using SP. - DIE *getOrCreateSubprogramDIE(DISubprogram SP); - - /// getOrCreateTypeDIE - Find existing DIE or create new DIE for the - /// given DIType. - DIE *getOrCreateTypeDIE(const MDNode *N); - - /// getOrCreateTemplateTypeParameterDIE - Find existing DIE or create new DIE - /// for the given DITemplateTypeParameter. - DIE *getOrCreateTemplateTypeParameterDIE(DITemplateTypeParameter TP); + /// constructVariableDIE - Construct a DIE for the given DbgVariable. + std::unique_ptr constructVariableDIE(DbgVariable &DV, + bool Abstract = false); - /// getOrCreateTemplateValueParameterDIE - Find existing DIE or create - /// new DIE for the given DITemplateValueParameter. - DIE *getOrCreateTemplateValueParameterDIE(DITemplateValueParameter TVP); + std::unique_ptr constructVariableDIE(DbgVariable &DV, + const LexicalScope &Scope, + DIE *&ObjectPointer); - /// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug - /// information entry. - DIEEntry *createDIEEntry(DIE *Entry); + /// A helper function to create children of a Scope DIE. + DIE *createScopeChildrenDIE(LexicalScope *Scope, + SmallVectorImpl> &Children, + unsigned *ChildScopeCount = nullptr); - /// createGlobalVariableDIE - create global variable DIE. - void createGlobalVariableDIE(const MDNode *N); + /// \brief Construct a DIE for this subprogram scope. + void constructSubprogramScopeDIE(LexicalScope *Scope); - void addPubTypes(DISubprogram SP); + DIE *createAndAddScopeChildren(LexicalScope *Scope, DIE &ScopeDIE); - /// constructTypeDIE - Construct basic type die from DIBasicType. - void constructTypeDIE(DIE &Buffer, - DIBasicType BTy); + void constructAbstractSubprogramScopeDIE(LexicalScope *Scope); - /// constructTypeDIE - Construct derived type die from DIDerivedType. - void constructTypeDIE(DIE &Buffer, - DIDerivedType DTy); + /// \brief Construct import_module DIE. + std::unique_ptr + constructImportedEntityDIE(const DIImportedEntity &Module); - /// constructTypeDIE - Construct type DIE from DICompositeType. - void constructTypeDIE(DIE &Buffer, - DICompositeType CTy); + void finishSubprogramDefinition(DISubprogram SP); - /// constructSubrangeDIE - Construct subrange DIE from DISubrange. - void constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy); + void collectDeadVariables(DISubprogram SP); - /// constructArrayTypeDIE - Construct array type DIE from DICompositeType. - void constructArrayTypeDIE(DIE &Buffer, - DICompositeType *CTy); + /// 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(); + } - /// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator. - DIE *constructEnumTypeDIE(DIEnumerator ETy); + /// 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(); + } - /// constructContainingTypeDIEs - Construct DIEs for types that contain - /// vtables. - void constructContainingTypeDIEs(); + /// Set the skeleton unit associated with this unit. + void setSkeleton(DwarfCompileUnit &Skel) { Skeleton = &Skel; } - /// constructVariableDIE - Construct a DIE for the given DbgVariable. - DIE *constructVariableDIE(DbgVariable *DV, bool isScopeAbstract); + MCSymbol *getSectionSym() const { + assert(Section); + return SectionSym; + } - /// createMemberDIE - Create new member DIE. - DIE *createMemberDIE(DIDerivedType DT); + /// 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) { + DwarfUnit::initSection(Section); + this->SectionSym = SectionSym; + LabelBegin = + Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID()); + } - /// createStaticMemberDIE - Create new static data member DIE. - DIE *createStaticMemberDIE(DIDerivedType DT); + unsigned getLength() { + return sizeof(uint32_t) + // Length field + getHeaderSize() + UnitDie.getSize(); + } -private: + void emitHeader(const MCSymbol *ASectionSym) const override; - // DIEValueAllocator - All DIEValues are allocated through this allocator. - BumpPtrAllocator DIEValueAllocator; - DIEInteger *DIEIntegerOne; + MCSymbol *getLabelBegin() const { + assert(Section); + return LabelBegin; + } }; } // end llvm namespace + #endif