| //===-- llvm/CodeGen/DwarfDebug.h - Dwarf Debug Framework ------*- C++ -*--===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains support for writing dwarf debug info into asm files. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFDEBUG_H |
| #define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFDEBUG_H |
| |
| #include "AsmPrinterHandler.h" |
| #include "DbgValueHistoryCalculator.h" |
| #include "DebugLocStream.h" |
| #include "DwarfAccelTable.h" |
| #include "DwarfFile.h" |
| #include "llvm/ADT/DenseMap.h" |
| #include "llvm/ADT/DenseSet.h" |
| #include "llvm/ADT/FoldingSet.h" |
| #include "llvm/ADT/MapVector.h" |
| #include "llvm/ADT/SmallPtrSet.h" |
| #include "llvm/ADT/StringMap.h" |
| #include "llvm/CodeGen/DIE.h" |
| #include "llvm/CodeGen/LexicalScopes.h" |
| #include "llvm/CodeGen/MachineInstr.h" |
| #include "llvm/IR/DebugInfo.h" |
| #include "llvm/IR/DebugLoc.h" |
| #include "llvm/MC/MCDwarf.h" |
| #include "llvm/MC/MachineLocation.h" |
| #include "llvm/Support/Allocator.h" |
| #include <memory> |
| |
| namespace llvm { |
| |
| class AsmPrinter; |
| class ByteStreamer; |
| class ConstantInt; |
| class ConstantFP; |
| class DebugLocEntry; |
| class DwarfCompileUnit; |
| class DwarfDebug; |
| class DwarfTypeUnit; |
| class DwarfUnit; |
| class MachineModuleInfo; |
| |
| //===----------------------------------------------------------------------===// |
| /// This class is used to record source line correspondence. |
| class SrcLineInfo { |
| unsigned Line; // Source line number. |
| unsigned Column; // Source column. |
| unsigned SourceID; // Source ID number. |
| MCSymbol *Label; // Label in code ID number. |
| public: |
| SrcLineInfo(unsigned L, unsigned C, unsigned S, MCSymbol *label) |
| : Line(L), Column(C), SourceID(S), Label(label) {} |
| |
| // Accessors |
| unsigned getLine() const { return Line; } |
| unsigned getColumn() const { return Column; } |
| unsigned getSourceID() const { return SourceID; } |
| MCSymbol *getLabel() const { return Label; } |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| /// This class is used to track local variable information. |
| /// |
| /// Variables can be created from allocas, in which case they're generated from |
| /// the MMI table. Such variables can have multiple expressions and frame |
| /// indices. The \a Expr and \a FrameIndices array must match. |
| /// |
| /// Variables can be created from \c DBG_VALUE instructions. Those whose |
| /// location changes over time use \a DebugLocListIndex, while those with a |
| /// single instruction use \a MInsn and (optionally) a single entry of \a Expr. |
| /// |
| /// Variables that have been optimized out use none of these fields. |
| class DbgVariable { |
| const DILocalVariable *Var; /// Variable Descriptor. |
| const DILocation *IA; /// Inlined at location. |
| SmallVector<const DIExpression *, 1> Expr; /// Complex address. |
| DIE *TheDIE = nullptr; /// Variable DIE. |
| unsigned DebugLocListIndex = ~0u; /// Offset in DebugLocs. |
| const MachineInstr *MInsn = nullptr; /// DBG_VALUE instruction. |
| SmallVector<int, 1> FrameIndex; /// Frame index. |
| DwarfDebug *DD; |
| |
| public: |
| /// Construct a DbgVariable. |
| /// |
| /// Creates a variable without any DW_AT_location. Call \a initializeMMI() |
| /// for MMI entries, or \a initializeDbgValue() for DBG_VALUE instructions. |
| DbgVariable(const DILocalVariable *V, const DILocation *IA, DwarfDebug *DD) |
| : Var(V), IA(IA), DD(DD) {} |
| |
| /// Initialize from the MMI table. |
| void initializeMMI(const DIExpression *E, int FI) { |
| assert(Expr.empty() && "Already initialized?"); |
| assert(FrameIndex.empty() && "Already initialized?"); |
| assert(!MInsn && "Already initialized?"); |
| |
| assert((!E || E->isValid()) && "Expected valid expression"); |
| assert(~FI && "Expected valid index"); |
| |
| Expr.push_back(E); |
| FrameIndex.push_back(FI); |
| } |
| |
| /// Initialize from a DBG_VALUE instruction. |
| void initializeDbgValue(const MachineInstr *DbgValue) { |
| assert(Expr.empty() && "Already initialized?"); |
| assert(FrameIndex.empty() && "Already initialized?"); |
| assert(!MInsn && "Already initialized?"); |
| |
| assert(Var == DbgValue->getDebugVariable() && "Wrong variable"); |
| assert(IA == DbgValue->getDebugLoc()->getInlinedAt() && "Wrong inlined-at"); |
| |
| MInsn = DbgValue; |
| if (auto *E = DbgValue->getDebugExpression()) |
| if (E->getNumElements()) |
| Expr.push_back(E); |
| } |
| |
| // Accessors. |
| const DILocalVariable *getVariable() const { return Var; } |
| const DILocation *getInlinedAt() const { return IA; } |
| const ArrayRef<const DIExpression *> getExpression() const { return Expr; } |
| void setDIE(DIE &D) { TheDIE = &D; } |
| DIE *getDIE() const { return TheDIE; } |
| void setDebugLocListIndex(unsigned O) { DebugLocListIndex = O; } |
| unsigned getDebugLocListIndex() const { return DebugLocListIndex; } |
| StringRef getName() const { return Var->getName(); } |
| const MachineInstr *getMInsn() const { return MInsn; } |
| const ArrayRef<int> getFrameIndex() const { return FrameIndex; } |
| |
| void addMMIEntry(const DbgVariable &V) { |
| assert(DebugLocListIndex == ~0U && !MInsn && "not an MMI entry"); |
| assert(V.DebugLocListIndex == ~0U && !V.MInsn && "not an MMI entry"); |
| assert(V.Var == Var && "conflicting variable"); |
| assert(V.IA == IA && "conflicting inlined-at location"); |
| |
| assert(!FrameIndex.empty() && "Expected an MMI entry"); |
| assert(!V.FrameIndex.empty() && "Expected an MMI entry"); |
| assert(Expr.size() == FrameIndex.size() && "Mismatched expressions"); |
| assert(V.Expr.size() == V.FrameIndex.size() && "Mismatched expressions"); |
| |
| Expr.append(V.Expr.begin(), V.Expr.end()); |
| FrameIndex.append(V.FrameIndex.begin(), V.FrameIndex.end()); |
| assert(std::all_of(Expr.begin(), Expr.end(), [](const DIExpression *E) { |
| return E && E->isBitPiece(); |
| }) && "conflicting locations for variable"); |
| } |
| |
| // Translate tag to proper Dwarf tag. |
| dwarf::Tag getTag() const { |
| if (Var->getTag() == dwarf::DW_TAG_arg_variable) |
| return dwarf::DW_TAG_formal_parameter; |
| |
| return dwarf::DW_TAG_variable; |
| } |
| /// Return true if DbgVariable is artificial. |
| bool isArtificial() const { |
| if (Var->isArtificial()) |
| return true; |
| if (getType()->isArtificial()) |
| return true; |
| return false; |
| } |
| |
| bool isObjectPointer() const { |
| if (Var->isObjectPointer()) |
| return true; |
| if (getType()->isObjectPointer()) |
| return true; |
| return false; |
| } |
| |
| bool hasComplexAddress() const { |
| assert(MInsn && "Expected DBG_VALUE, not MMI variable"); |
| assert(FrameIndex.empty() && "Expected DBG_VALUE, not MMI variable"); |
| assert( |
| (Expr.empty() || (Expr.size() == 1 && Expr.back()->getNumElements())) && |
| "Invalid Expr for DBG_VALUE"); |
| return !Expr.empty(); |
| } |
| bool isBlockByrefVariable() const; |
| const DIType *getType() const; |
| |
| private: |
| /// Look in the DwarfDebug map for the MDNode that |
| /// corresponds to the reference. |
| template <typename T> T *resolve(TypedDINodeRef<T> Ref) const; |
| }; |
| |
| |
| /// Helper used to pair up a symbol and its DWARF compile unit. |
| struct SymbolCU { |
| SymbolCU(DwarfCompileUnit *CU, const MCSymbol *Sym) : Sym(Sym), CU(CU) {} |
| const MCSymbol *Sym; |
| DwarfCompileUnit *CU; |
| }; |
| |
| /// Collects and handles dwarf debug information. |
| class DwarfDebug : public AsmPrinterHandler { |
| /// Target of Dwarf emission. |
| AsmPrinter *Asm; |
| |
| /// Collected machine module information. |
| MachineModuleInfo *MMI; |
| |
| /// All DIEValues are allocated through this allocator. |
| BumpPtrAllocator DIEValueAllocator; |
| |
| /// Maps MDNode with its corresponding DwarfCompileUnit. |
| MapVector<const MDNode *, DwarfCompileUnit *> CUMap; |
| |
| /// Maps subprogram MDNode with its corresponding DwarfCompileUnit. |
| MapVector<const MDNode *, DwarfCompileUnit *> SPMap; |
| |
| /// Maps a CU DIE with its corresponding DwarfCompileUnit. |
| DenseMap<const DIE *, DwarfCompileUnit *> CUDieMap; |
| |
| /// List of all labels used in aranges generation. |
| std::vector<SymbolCU> ArangeLabels; |
| |
| /// Size of each symbol emitted (for those symbols that have a specific size). |
| DenseMap<const MCSymbol *, uint64_t> SymSize; |
| |
| LexicalScopes LScopes; |
| |
| /// Collection of abstract variables. |
| DenseMap<const MDNode *, std::unique_ptr<DbgVariable>> AbstractVariables; |
| SmallVector<std::unique_ptr<DbgVariable>, 64> ConcreteVariables; |
| |
| /// Collection of DebugLocEntry. Stored in a linked list so that DIELocLists |
| /// can refer to them in spite of insertions into this list. |
| DebugLocStream DebugLocs; |
| |
| /// This is a collection of subprogram MDNodes that are processed to |
| /// create DIEs. |
| SmallPtrSet<const MDNode *, 16> ProcessedSPNodes; |
| |
| /// Maps instruction with label emitted before instruction. |
| DenseMap<const MachineInstr *, MCSymbol *> LabelsBeforeInsn; |
| |
| /// Maps instruction with label emitted after instruction. |
| DenseMap<const MachineInstr *, MCSymbol *> LabelsAfterInsn; |
| |
| /// History of DBG_VALUE and clobber instructions for each user |
| /// variable. Variables are listed in order of appearance. |
| DbgValueHistoryMap DbgValues; |
| |
| /// Previous instruction's location information. This is used to |
| /// determine label location to indicate scope boundries in dwarf |
| /// debug info. |
| DebugLoc PrevInstLoc; |
| MCSymbol *PrevLabel; |
| |
| /// This location indicates end of function prologue and beginning of |
| /// function body. |
| DebugLoc PrologEndLoc; |
| |
| /// If nonnull, stores the current machine function we're processing. |
| const MachineFunction *CurFn; |
| |
| /// If nonnull, stores the current machine instruction we're processing. |
| const MachineInstr *CurMI; |
| |
| /// If nonnull, stores the CU in which the previous subprogram was contained. |
| const DwarfCompileUnit *PrevCU; |
| |
| /// As an optimization, there is no need to emit an entry in the directory |
| /// table for the same directory as DW_AT_comp_dir. |
| StringRef CompilationDir; |
| |
| /// Holder for the file specific debug information. |
| DwarfFile InfoHolder; |
| |
| /// Holders for the various debug information flags that we might need to |
| /// have exposed. See accessor functions below for description. |
| |
| /// Holder for imported entities. |
| typedef SmallVector<std::pair<const MDNode *, const MDNode *>, 32> |
| ImportedEntityMap; |
| ImportedEntityMap ScopesWithImportedEntities; |
| |
| /// Map from MDNodes for user-defined types to the type units that |
| /// describe them. |
| DenseMap<const MDNode *, const DwarfTypeUnit *> DwarfTypeUnits; |
| |
| SmallVector< |
| std::pair<std::unique_ptr<DwarfTypeUnit>, const DICompositeType *>, 1> |
| TypeUnitsUnderConstruction; |
| |
| /// Whether to emit the pubnames/pubtypes sections. |
| bool HasDwarfPubSections; |
| |
| /// Whether or not to use AT_ranges for compilation units. |
| bool HasCURanges; |
| |
| /// Whether we emitted a function into a section other than the |
| /// default text. |
| bool UsedNonDefaultText; |
| |
| /// Whether to use the GNU TLS opcode (instead of the standard opcode). |
| bool UseGNUTLSOpcode; |
| |
| /// Version of dwarf we're emitting. |
| unsigned DwarfVersion; |
| |
| /// Maps from a type identifier to the actual MDNode. |
| DITypeIdentifierMap TypeIdentifierMap; |
| |
| /// DWARF5 Experimental Options |
| /// @{ |
| bool HasDwarfAccelTables; |
| bool HasSplitDwarf; |
| |
| /// Separated Dwarf Variables |
| /// In general these will all be for bits that are left in the |
| /// original object file, rather than things that are meant |
| /// to be in the .dwo sections. |
| |
| /// Holder for the skeleton information. |
| DwarfFile SkeletonHolder; |
| |
| /// Store file names for type units under fission in a line table |
| /// header that will be emitted into debug_line.dwo. |
| // FIXME: replace this with a map from comp_dir to table so that we |
| // can emit multiple tables during LTO each of which uses directory |
| // 0, referencing the comp_dir of all the type units that use it. |
| MCDwarfDwoLineTable SplitTypeUnitFileTable; |
| /// @} |
| |
| /// True iff there are multiple CUs in this module. |
| bool SingleCU; |
| bool IsDarwin; |
| bool IsPS4; |
| |
| AddressPool AddrPool; |
| |
| DwarfAccelTable AccelNames; |
| DwarfAccelTable AccelObjC; |
| DwarfAccelTable AccelNamespace; |
| DwarfAccelTable AccelTypes; |
| |
| DenseMap<const Function *, DISubprogram *> FunctionDIs; |
| |
| MCDwarfDwoLineTable *getDwoLineTable(const DwarfCompileUnit &); |
| |
| const SmallVectorImpl<std::unique_ptr<DwarfUnit>> &getUnits() { |
| return InfoHolder.getUnits(); |
| } |
| |
| typedef DbgValueHistoryMap::InlinedVariable InlinedVariable; |
| |
| /// Find abstract variable associated with Var. |
| DbgVariable *getExistingAbstractVariable(InlinedVariable IV, |
| const DILocalVariable *&Cleansed); |
| DbgVariable *getExistingAbstractVariable(InlinedVariable IV); |
| void createAbstractVariable(const DILocalVariable *DV, LexicalScope *Scope); |
| void ensureAbstractVariableIsCreated(InlinedVariable Var, |
| const MDNode *Scope); |
| void ensureAbstractVariableIsCreatedIfScoped(InlinedVariable Var, |
| const MDNode *Scope); |
| |
| DbgVariable *createConcreteVariable(LexicalScope &Scope, InlinedVariable IV); |
| |
| /// Construct a DIE for this abstract scope. |
| void constructAbstractSubprogramScopeDIE(LexicalScope *Scope); |
| |
| /// Compute the size and offset of a DIE given an incoming Offset. |
| unsigned computeSizeAndOffset(DIE *Die, unsigned Offset); |
| |
| /// Compute the size and offset of all the DIEs. |
| void computeSizeAndOffsets(); |
| |
| /// Collect info for variables that were optimized out. |
| void collectDeadVariables(); |
| |
| void finishVariableDefinitions(); |
| |
| void finishSubprogramDefinitions(); |
| |
| /// Finish off debug information after all functions have been |
| /// processed. |
| void finalizeModuleInfo(); |
| |
| /// Emit the debug info section. |
| void emitDebugInfo(); |
| |
| /// Emit the abbreviation section. |
| void emitAbbreviations(); |
| |
| /// Emit a specified accelerator table. |
| void emitAccel(DwarfAccelTable &Accel, MCSection *Section, |
| StringRef TableName); |
| |
| /// Emit visible names into a hashed accelerator table section. |
| void emitAccelNames(); |
| |
| /// Emit objective C classes and categories into a hashed |
| /// accelerator table section. |
| void emitAccelObjC(); |
| |
| /// Emit namespace dies into a hashed accelerator table. |
| void emitAccelNamespaces(); |
| |
| /// Emit type dies into a hashed accelerator table. |
| void emitAccelTypes(); |
| |
| /// Emit visible names into a debug pubnames section. |
| /// \param GnuStyle determines whether or not we want to emit |
| /// additional information into the table ala newer gcc for gdb |
| /// index. |
| void emitDebugPubNames(bool GnuStyle = false); |
| |
| /// Emit visible types into a debug pubtypes section. |
| /// \param GnuStyle determines whether or not we want to emit |
| /// additional information into the table ala newer gcc for gdb |
| /// index. |
| void emitDebugPubTypes(bool GnuStyle = false); |
| |
| void emitDebugPubSection( |
| bool GnuStyle, MCSection *PSec, StringRef Name, |
| const StringMap<const DIE *> &(DwarfCompileUnit::*Accessor)() const); |
| |
| /// Emit visible names into a debug str section. |
| void emitDebugStr(); |
| |
| /// Emit visible names into a debug loc section. |
| void emitDebugLoc(); |
| |
| /// Emit visible names into a debug loc dwo section. |
| void emitDebugLocDWO(); |
| |
| /// Emit visible names into a debug aranges section. |
| void emitDebugARanges(); |
| |
| /// Emit visible names into a debug ranges section. |
| void emitDebugRanges(); |
| |
| /// Emit inline info using custom format. |
| void emitDebugInlineInfo(); |
| |
| /// DWARF 5 Experimental Split Dwarf Emitters |
| |
| /// Initialize common features of skeleton units. |
| void initSkeletonUnit(const DwarfUnit &U, DIE &Die, |
| std::unique_ptr<DwarfUnit> NewU); |
| |
| /// Construct the split debug info compile unit for the debug info |
| /// section. |
| DwarfCompileUnit &constructSkeletonCU(const DwarfCompileUnit &CU); |
| |
| /// Construct the split debug info compile unit for the debug info |
| /// section. |
| DwarfTypeUnit &constructSkeletonTU(DwarfTypeUnit &TU); |
| |
| /// Emit the debug info dwo section. |
| void emitDebugInfoDWO(); |
| |
| /// Emit the debug abbrev dwo section. |
| void emitDebugAbbrevDWO(); |
| |
| /// Emit the debug line dwo section. |
| void emitDebugLineDWO(); |
| |
| /// Emit the debug str dwo section. |
| void emitDebugStrDWO(); |
| |
| /// Flags to let the linker know we have emitted new style pubnames. Only |
| /// emit it here if we don't have a skeleton CU for split dwarf. |
| void addGnuPubAttributes(DwarfUnit &U, DIE &D) const; |
| |
| /// Create new DwarfCompileUnit for the given metadata node with tag |
| /// DW_TAG_compile_unit. |
| DwarfCompileUnit &constructDwarfCompileUnit(const DICompileUnit *DIUnit); |
| |
| /// Construct imported_module or imported_declaration DIE. |
| void constructAndAddImportedEntityDIE(DwarfCompileUnit &TheCU, |
| const DIImportedEntity *N); |
| |
| /// Register a source line with debug info. Returns the unique |
| /// label that was emitted and which provides correspondence to the |
| /// source line list. |
| void recordSourceLine(unsigned Line, unsigned Col, const MDNode *Scope, |
| unsigned Flags); |
| |
| /// Indentify instructions that are marking the beginning of or |
| /// ending of a scope. |
| void identifyScopeMarkers(); |
| |
| /// Populate LexicalScope entries with variables' info. |
| void collectVariableInfo(DwarfCompileUnit &TheCU, const DISubprogram *SP, |
| DenseSet<InlinedVariable> &ProcessedVars); |
| |
| /// Build the location list for all DBG_VALUEs in the |
| /// function that describe the same variable. |
| void buildLocationList(SmallVectorImpl<DebugLocEntry> &DebugLoc, |
| const DbgValueHistoryMap::InstrRanges &Ranges); |
| |
| /// Collect variable information from the side table maintained |
| /// by MMI. |
| void collectVariableInfoFromMMITable(DenseSet<InlinedVariable> &P); |
| |
| /// Ensure that a label will be emitted before MI. |
| void requestLabelBeforeInsn(const MachineInstr *MI) { |
| LabelsBeforeInsn.insert(std::make_pair(MI, nullptr)); |
| } |
| |
| /// Ensure that a label will be emitted after MI. |
| void requestLabelAfterInsn(const MachineInstr *MI) { |
| LabelsAfterInsn.insert(std::make_pair(MI, nullptr)); |
| } |
| |
| public: |
| //===--------------------------------------------------------------------===// |
| // Main entry points. |
| // |
| DwarfDebug(AsmPrinter *A, Module *M); |
| |
| ~DwarfDebug() override; |
| |
| /// Emit all Dwarf sections that should come prior to the |
| /// content. |
| void beginModule(); |
| |
| /// Emit all Dwarf sections that should come after the content. |
| void endModule() override; |
| |
| /// Gather pre-function debug information. |
| void beginFunction(const MachineFunction *MF) override; |
| |
| /// Gather and emit post-function debug information. |
| void endFunction(const MachineFunction *MF) override; |
| |
| /// Process beginning of an instruction. |
| void beginInstruction(const MachineInstr *MI) override; |
| |
| /// Process end of an instruction. |
| void endInstruction() override; |
| |
| /// Add a DIE to the set of types that we're going to pull into |
| /// type units. |
| void addDwarfTypeUnitType(DwarfCompileUnit &CU, StringRef Identifier, |
| DIE &Die, const DICompositeType *CTy); |
| |
| /// Add a label so that arange data can be generated for it. |
| void addArangeLabel(SymbolCU SCU) { ArangeLabels.push_back(SCU); } |
| |
| /// For symbols that have a size designated (e.g. common symbols), |
| /// this tracks that size. |
| void setSymbolSize(const MCSymbol *Sym, uint64_t Size) override { |
| SymSize[Sym] = Size; |
| } |
| |
| /// Returns whether to use DW_OP_GNU_push_tls_address, instead of the |
| /// standard DW_OP_form_tls_address opcode |
| bool useGNUTLSOpcode() const { return UseGNUTLSOpcode; } |
| |
| // Experimental DWARF5 features. |
| |
| /// Returns whether or not to emit tables that dwarf consumers can |
| /// use to accelerate lookup. |
| bool useDwarfAccelTables() const { return HasDwarfAccelTables; } |
| |
| /// Returns whether or not to change the current debug info for the |
| /// split dwarf proposal support. |
| bool useSplitDwarf() const { return HasSplitDwarf; } |
| |
| /// Returns the Dwarf Version. |
| unsigned getDwarfVersion() const { return DwarfVersion; } |
| |
| /// Returns the previous CU that was being updated |
| const DwarfCompileUnit *getPrevCU() const { return PrevCU; } |
| void setPrevCU(const DwarfCompileUnit *PrevCU) { this->PrevCU = PrevCU; } |
| |
| /// Returns the entries for the .debug_loc section. |
| const DebugLocStream &getDebugLocs() const { return DebugLocs; } |
| |
| /// Emit an entry for the debug loc section. This can be used to |
| /// handle an entry that's going to be emitted into the debug loc section. |
| void emitDebugLocEntry(ByteStreamer &Streamer, |
| const DebugLocStream::Entry &Entry); |
| |
| /// Emit the location for a debug loc entry, including the size header. |
| void emitDebugLocEntryLocation(const DebugLocStream::Entry &Entry); |
| |
| /// Find the MDNode for the given reference. |
| template <typename T> T *resolve(TypedDINodeRef<T> Ref) const { |
| return Ref.resolve(TypeIdentifierMap); |
| } |
| |
| /// Return the TypeIdentifierMap. |
| const DITypeIdentifierMap &getTypeIdentifierMap() const { |
| return TypeIdentifierMap; |
| } |
| |
| /// Find the DwarfCompileUnit for the given CU Die. |
| DwarfCompileUnit *lookupUnit(const DIE *CU) const { |
| return CUDieMap.lookup(CU); |
| } |
| /// isSubprogramContext - Return true if Context is either a subprogram |
| /// or another context nested inside a subprogram. |
| bool isSubprogramContext(const MDNode *Context); |
| |
| void addSubprogramNames(const DISubprogram *SP, DIE &Die); |
| |
| AddressPool &getAddressPool() { return AddrPool; } |
| |
| void addAccelName(StringRef Name, const DIE &Die); |
| |
| void addAccelObjC(StringRef Name, const DIE &Die); |
| |
| void addAccelNamespace(StringRef Name, const DIE &Die); |
| |
| void addAccelType(StringRef Name, const DIE &Die, char Flags); |
| |
| const MachineFunction *getCurrentFunction() const { return CurFn; } |
| |
| iterator_range<ImportedEntityMap::const_iterator> |
| findImportedEntitiesForScope(const MDNode *Scope) const { |
| return make_range(std::equal_range( |
| ScopesWithImportedEntities.begin(), ScopesWithImportedEntities.end(), |
| std::pair<const MDNode *, const MDNode *>(Scope, nullptr), |
| less_first())); |
| } |
| |
| /// A helper function to check whether the DIE for a given Scope is |
| /// going to be null. |
| bool isLexicalScopeDIENull(LexicalScope *Scope); |
| |
| /// Return Label preceding the instruction. |
| MCSymbol *getLabelBeforeInsn(const MachineInstr *MI); |
| |
| /// Return Label immediately following the instruction. |
| MCSymbol *getLabelAfterInsn(const MachineInstr *MI); |
| |
| // FIXME: Sink these functions down into DwarfFile/Dwarf*Unit. |
| |
| SmallPtrSet<const MDNode *, 16> &getProcessedSPNodes() { |
| return ProcessedSPNodes; |
| } |
| }; |
| } // End of namespace llvm |
| |
| #endif |