1 //===-- llvm/CodeGen/DwarfDebug.h - Dwarf Debug Framework ------*- C++ -*--===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains support for writing dwarf debug info into asm files.
12 //===----------------------------------------------------------------------===//
14 #ifndef CODEGEN_ASMPRINTER_DWARFDEBUG_H__
15 #define CODEGEN_ASMPRINTER_DWARFDEBUG_H__
17 #include "DwarfFile.h"
18 #include "AsmPrinterHandler.h"
20 #include "DbgValueHistoryCalculator.h"
21 #include "DebugLocEntry.h"
22 #include "DebugLocList.h"
23 #include "DwarfAccelTable.h"
24 #include "llvm/ADT/DenseMap.h"
25 #include "llvm/ADT/MapVector.h"
26 #include "llvm/ADT/SmallPtrSet.h"
27 #include "llvm/ADT/StringMap.h"
28 #include "llvm/ADT/FoldingSet.h"
29 #include "llvm/CodeGen/LexicalScopes.h"
30 #include "llvm/CodeGen/MachineInstr.h"
31 #include "llvm/IR/DebugInfo.h"
32 #include "llvm/IR/DebugLoc.h"
33 #include "llvm/MC/MachineLocation.h"
34 #include "llvm/MC/MCDwarf.h"
35 #include "llvm/Support/Allocator.h"
45 class DwarfCompileUnit;
49 class MachineModuleInfo;
51 //===----------------------------------------------------------------------===//
52 /// \brief This class is used to record source line correspondence.
54 unsigned Line; // Source line number.
55 unsigned Column; // Source column.
56 unsigned SourceID; // Source ID number.
57 MCSymbol *Label; // Label in code ID number.
59 SrcLineInfo(unsigned L, unsigned C, unsigned S, MCSymbol *label)
60 : Line(L), Column(C), SourceID(S), Label(label) {}
63 unsigned getLine() const { return Line; }
64 unsigned getColumn() const { return Column; }
65 unsigned getSourceID() const { return SourceID; }
66 MCSymbol *getLabel() const { return Label; }
69 //===----------------------------------------------------------------------===//
70 /// \brief This class is used to track local variable information.
72 DIVariable Var; // Variable Descriptor.
73 DIE *TheDIE; // Variable DIE.
74 unsigned DotDebugLocOffset; // Offset in DotDebugLocEntries.
75 DbgVariable *AbsVar; // Corresponding Abstract variable, if any.
76 const MachineInstr *MInsn; // DBG_VALUE instruction of the variable.
81 /// Construct a DbgVariable from a DIVariable.
82 /// AbstractVar may be NULL.
83 DbgVariable(DIVariable V, DbgVariable *AbstractVar, DwarfDebug *DD)
84 : Var(V), TheDIE(nullptr), DotDebugLocOffset(~0U), AbsVar(AbstractVar),
85 MInsn(nullptr), FrameIndex(~0), DD(DD) {}
87 /// Construct a DbgVariable from a DEBUG_VALUE.
88 /// AbstractVar may be NULL.
89 DbgVariable(const MachineInstr *DbgValue, DbgVariable *AbstractVar,
91 : Var(DbgValue->getDebugVariable()),
92 TheDIE(nullptr), DotDebugLocOffset(~0U), AbsVar(AbstractVar),
93 MInsn(DbgValue), FrameIndex(~0), DD(DD) {}
96 DIVariable getVariable() const { return Var; }
97 void setDIE(DIE &D) { TheDIE = &D; }
98 DIE *getDIE() const { return TheDIE; }
99 void setDotDebugLocOffset(unsigned O) { DotDebugLocOffset = O; }
100 unsigned getDotDebugLocOffset() const { return DotDebugLocOffset; }
101 StringRef getName() const { return Var.getName(); }
102 DbgVariable *getAbstractVariable() const { return AbsVar; }
103 const MachineInstr *getMInsn() const { return MInsn; }
104 int getFrameIndex() const { return FrameIndex; }
105 void setFrameIndex(int FI) { FrameIndex = FI; }
106 // Translate tag to proper Dwarf tag.
107 dwarf::Tag getTag() const {
108 if (Var.getTag() == dwarf::DW_TAG_arg_variable)
109 return dwarf::DW_TAG_formal_parameter;
111 return dwarf::DW_TAG_variable;
113 /// \brief Return true if DbgVariable is artificial.
114 bool isArtificial() const {
115 if (Var.isArtificial())
117 if (getType().isArtificial())
122 bool isObjectPointer() const {
123 if (Var.isObjectPointer())
125 if (getType().isObjectPointer())
130 bool variableHasComplexAddress() const {
131 assert(Var.isVariable() && "Invalid complex DbgVariable!");
132 return Var.hasComplexAddress();
134 bool isBlockByrefVariable() const;
135 unsigned getNumAddrElements() const {
136 assert(Var.isVariable() && "Invalid complex DbgVariable!");
137 return Var.getNumAddrElements();
139 uint64_t getAddrElement(unsigned i) const { return Var.getAddrElement(i); }
140 DIType getType() const;
143 /// resolve - Look in the DwarfDebug map for the MDNode that
144 /// corresponds to the reference.
145 template <typename T> T resolve(DIRef<T> Ref) const;
149 /// \brief Helper used to pair up a symbol and its DWARF compile unit.
151 SymbolCU(DwarfCompileUnit *CU, const MCSymbol *Sym) : Sym(Sym), CU(CU) {}
153 DwarfCompileUnit *CU;
156 /// \brief Collects and handles dwarf debug information.
157 class DwarfDebug : public AsmPrinterHandler {
158 // Target of Dwarf emission.
161 // Collected machine module information.
162 MachineModuleInfo *MMI;
164 // All DIEValues are allocated through this allocator.
165 BumpPtrAllocator DIEValueAllocator;
167 // Handle to the compile unit used for the inline extension handling,
168 // this is just so that the DIEValue allocator has a place to store
169 // the particular elements.
170 // FIXME: Store these off of DwarfDebug instead?
171 DwarfCompileUnit *FirstCU;
173 // Maps MDNode with its corresponding DwarfCompileUnit.
174 MapVector<const MDNode *, DwarfCompileUnit *> CUMap;
176 // Maps subprogram MDNode with its corresponding DwarfCompileUnit.
177 DenseMap<const MDNode *, DwarfCompileUnit *> SPMap;
179 // Maps a CU DIE with its corresponding DwarfCompileUnit.
180 DenseMap<const DIE *, DwarfCompileUnit *> CUDieMap;
182 /// Maps MDNodes for type system with the corresponding DIEs. These DIEs can
183 /// be shared across CUs, that is why we keep the map here instead
184 /// of in DwarfCompileUnit.
185 DenseMap<const MDNode *, DIE *> MDTypeNodeToDieMap;
187 // List of all labels used in aranges generation.
188 std::vector<SymbolCU> ArangeLabels;
190 // Size of each symbol emitted (for those symbols that have a specific size).
191 DenseMap<const MCSymbol *, uint64_t> SymSize;
193 // Provides a unique id per text section.
194 typedef DenseMap<const MCSection *, SmallVector<SymbolCU, 8> > SectionMapType;
195 SectionMapType SectionMap;
197 // List of arguments for current function.
198 SmallVector<DbgVariable *, 8> CurrentFnArguments;
200 LexicalScopes LScopes;
202 // Collection of abstract subprogram DIEs.
203 DenseMap<const MDNode *, DIE *> AbstractSPDies;
205 // Collection of dbg variables of a scope.
206 typedef DenseMap<LexicalScope *, SmallVector<DbgVariable *, 8> >
208 ScopeVariablesMap ScopeVariables;
210 // Collection of abstract variables.
211 DenseMap<const MDNode *, std::unique_ptr<DbgVariable>> AbstractVariables;
212 SmallVector<std::unique_ptr<DbgVariable>, 64> ConcreteVariables;
214 // Collection of DebugLocEntry. Stored in a linked list so that DIELocLists
215 // can refer to them in spite of insertions into this list.
216 SmallVector<DebugLocList, 4> DotDebugLocEntries;
218 // Collection of subprogram DIEs that are marked (at the end of the module)
220 SmallPtrSet<DIE *, 4> InlinedSubprogramDIEs;
222 // This is a collection of subprogram MDNodes that are processed to
224 SmallPtrSet<const MDNode *, 16> ProcessedSPNodes;
226 // Maps instruction with label emitted before instruction.
227 DenseMap<const MachineInstr *, MCSymbol *> LabelsBeforeInsn;
229 // Maps instruction with label emitted after instruction.
230 DenseMap<const MachineInstr *, MCSymbol *> LabelsAfterInsn;
232 // History of DBG_VALUE and clobber instructions for each user variable.
233 // Variables are listed in order of appearance.
234 DbgValueHistoryMap DbgValues;
236 // Previous instruction's location information. This is used to determine
237 // label location to indicate scope boundries in dwarf debug info.
238 DebugLoc PrevInstLoc;
241 // This location indicates end of function prologue and beginning of function
243 DebugLoc PrologEndLoc;
245 // If nonnull, stores the current machine function we're processing.
246 const MachineFunction *CurFn;
248 // If nonnull, stores the current machine instruction we're processing.
249 const MachineInstr *CurMI;
251 // If nonnull, stores the section that the previous function was allocated to
253 const MCSection *PrevSection;
255 // If nonnull, stores the CU in which the previous subprogram was contained.
256 const DwarfCompileUnit *PrevCU;
258 // Section Symbols: these are assembler temporary labels that are emitted at
259 // the beginning of each supported dwarf section. These are used to form
260 // section offsets and are created by EmitSectionLabels.
261 MCSymbol *DwarfInfoSectionSym, *DwarfAbbrevSectionSym;
262 MCSymbol *DwarfStrSectionSym, *TextSectionSym, *DwarfDebugRangeSectionSym;
263 MCSymbol *DwarfDebugLocSectionSym, *DwarfLineSectionSym, *DwarfAddrSectionSym;
264 MCSymbol *FunctionBeginSym, *FunctionEndSym;
265 MCSymbol *DwarfInfoDWOSectionSym, *DwarfAbbrevDWOSectionSym;
266 MCSymbol *DwarfStrDWOSectionSym;
267 MCSymbol *DwarfGnuPubNamesSectionSym, *DwarfGnuPubTypesSectionSym;
269 // As an optimization, there is no need to emit an entry in the directory
270 // table for the same directory as DW_AT_comp_dir.
271 StringRef CompilationDir;
273 // Counter for assigning globally unique IDs for ranges.
274 unsigned GlobalRangeCount;
276 // Holder for the file specific debug information.
277 DwarfFile InfoHolder;
279 // Holders for the various debug information flags that we might need to
280 // have exposed. See accessor functions below for description.
282 // Holder for imported entities.
283 typedef SmallVector<std::pair<const MDNode *, const MDNode *>, 32>
285 ImportedEntityMap ScopesWithImportedEntities;
287 // Map from MDNodes for user-defined types to the type units that describe
289 DenseMap<const MDNode *, const DwarfTypeUnit *> DwarfTypeUnits;
291 SmallVector<std::pair<std::unique_ptr<DwarfTypeUnit>, DICompositeType>, 1> TypeUnitsUnderConstruction;
293 // Whether to emit the pubnames/pubtypes sections.
294 bool HasDwarfPubSections;
296 // Whether or not to use AT_ranges for compilation units.
299 // Whether we emitted a function into a section other than the default
301 bool UsedNonDefaultText;
303 // Version of dwarf we're emitting.
304 unsigned DwarfVersion;
306 // Maps from a type identifier to the actual MDNode.
307 DITypeIdentifierMap TypeIdentifierMap;
309 // DWARF5 Experimental Options
310 bool HasDwarfAccelTables;
313 // Separated Dwarf Variables
314 // In general these will all be for bits that are left in the
315 // original object file, rather than things that are meant
316 // to be in the .dwo sections.
318 // Holder for the skeleton information.
319 DwarfFile SkeletonHolder;
321 /// Store file names for type units under fission in a line table header that
322 /// will be emitted into debug_line.dwo.
323 // FIXME: replace this with a map from comp_dir to table so that we can emit
324 // multiple tables during LTO each of which uses directory 0, referencing the
325 // comp_dir of all the type units that use it.
326 MCDwarfDwoLineTable SplitTypeUnitFileTable;
328 // True iff there are multiple CUs in this module.
331 AddressPool AddrPool;
333 DwarfAccelTable AccelNames;
334 DwarfAccelTable AccelObjC;
335 DwarfAccelTable AccelNamespace;
336 DwarfAccelTable AccelTypes;
338 MCDwarfDwoLineTable *getDwoLineTable(const DwarfCompileUnit &);
340 void addScopeVariable(LexicalScope *LS, DbgVariable *Var);
342 const SmallVectorImpl<std::unique_ptr<DwarfUnit>> &getUnits() {
343 return InfoHolder.getUnits();
346 /// \brief Find abstract variable associated with Var.
347 DbgVariable *getExistingAbstractVariable(const DIVariable &DV,
348 DIVariable &Cleansed);
349 DbgVariable *createAbstractVariable(DIVariable &DV, LexicalScope *Scope);
350 DbgVariable *getOrCreateAbstractVariable(DIVariable &Var,
351 const MDNode *Scope);
352 DbgVariable *findAbstractVariable(DIVariable &Var, const MDNode *Scope);
354 /// \brief Find DIE for the given subprogram and attach appropriate
355 /// DW_AT_low_pc and DW_AT_high_pc attributes. If there are global
356 /// variables in this scope then create and insert DIEs for these
358 DIE &updateSubprogramScopeDIE(DwarfCompileUnit &SPCU, DISubprogram SP);
360 /// \brief A helper function to check whether the DIE for a given Scope is
361 /// going to be null.
362 bool isLexicalScopeDIENull(LexicalScope *Scope);
364 /// \brief A helper function to construct a RangeSpanList for a given
366 void addScopeRangeList(DwarfCompileUnit &TheCU, DIE &ScopeDIE,
367 const SmallVectorImpl<InsnRange> &Range);
369 /// \brief Construct new DW_TAG_lexical_block for this scope and
370 /// attach DW_AT_low_pc/DW_AT_high_pc labels.
371 std::unique_ptr<DIE> constructLexicalScopeDIE(DwarfCompileUnit &TheCU,
372 LexicalScope *Scope);
374 /// \brief This scope represents inlined body of a function. Construct
375 /// DIE to represent this concrete inlined copy of the function.
376 std::unique_ptr<DIE> constructInlinedScopeDIE(DwarfCompileUnit &TheCU,
377 LexicalScope *Scope);
379 /// \brief Construct a DIE for this scope.
380 std::unique_ptr<DIE> constructScopeDIE(DwarfCompileUnit &TheCU,
381 LexicalScope *Scope);
382 void createAndAddScopeChildren(DwarfCompileUnit &TheCU, LexicalScope *Scope,
384 /// \brief Construct a DIE for this abstract scope.
385 void constructAbstractSubprogramScopeDIE(DwarfCompileUnit &TheCU,
386 LexicalScope *Scope);
387 /// \brief Construct a DIE for this subprogram scope.
388 DIE &constructSubprogramScopeDIE(DwarfCompileUnit &TheCU,
389 LexicalScope *Scope);
390 /// A helper function to create children of a Scope DIE.
391 DIE *createScopeChildrenDIE(DwarfCompileUnit &TheCU, LexicalScope *Scope,
392 SmallVectorImpl<std::unique_ptr<DIE>> &Children);
394 /// \brief Emit initial Dwarf sections with a label at the start of each one.
395 void emitSectionLabels();
397 /// \brief Compute the size and offset of a DIE given an incoming Offset.
398 unsigned computeSizeAndOffset(DIE *Die, unsigned Offset);
400 /// \brief Compute the size and offset of all the DIEs.
401 void computeSizeAndOffsets();
403 /// \brief Collect info for variables that were optimized out.
404 void collectDeadVariables();
406 void finishVariableDefinitions();
408 void finishSubprogramDefinitions();
410 /// \brief Finish off debug information after all functions have been
412 void finalizeModuleInfo();
414 /// \brief Emit labels to close any remaining sections that have been left
418 /// \brief Emit the debug info section.
419 void emitDebugInfo();
421 /// \brief Emit the abbreviation section.
422 void emitAbbreviations();
424 /// \brief Emit the last address of the section and the end of
426 void emitEndOfLineMatrix(unsigned SectionEnd);
428 /// \brief Emit visible names into a hashed accelerator table section.
429 void emitAccelNames();
431 /// \brief Emit objective C classes and categories into a hashed
432 /// accelerator table section.
433 void emitAccelObjC();
435 /// \brief Emit namespace dies into a hashed accelerator table.
436 void emitAccelNamespaces();
438 /// \brief Emit type dies into a hashed accelerator table.
439 void emitAccelTypes();
441 /// \brief Emit visible names into a debug pubnames section.
442 /// \param GnuStyle determines whether or not we want to emit
443 /// additional information into the table ala newer gcc for gdb
445 void emitDebugPubNames(bool GnuStyle = false);
447 /// \brief Emit visible types into a debug pubtypes section.
448 /// \param GnuStyle determines whether or not we want to emit
449 /// additional information into the table ala newer gcc for gdb
451 void emitDebugPubTypes(bool GnuStyle = false);
454 emitDebugPubSection(bool GnuStyle, const MCSection *PSec, StringRef Name,
455 const StringMap<const DIE *> &(DwarfUnit::*Accessor)()
458 /// \brief Emit visible names into a debug str section.
461 /// \brief Emit visible names into a debug loc section.
464 /// \brief Emit visible names into a debug loc dwo section.
465 void emitDebugLocDWO();
467 /// \brief Emit visible names into a debug aranges section.
468 void emitDebugARanges();
470 /// \brief Emit visible names into a debug ranges section.
471 void emitDebugRanges();
473 /// \brief Emit inline info using custom format.
474 void emitDebugInlineInfo();
476 /// DWARF 5 Experimental Split Dwarf Emitters
478 /// \brief Initialize common features of skeleton units.
479 void initSkeletonUnit(const DwarfUnit &U, DIE &Die,
480 std::unique_ptr<DwarfUnit> NewU);
482 /// \brief Construct the split debug info compile unit for the debug info
484 DwarfCompileUnit &constructSkeletonCU(const DwarfCompileUnit &CU);
486 /// \brief Construct the split debug info compile unit for the debug info
488 DwarfTypeUnit &constructSkeletonTU(DwarfTypeUnit &TU);
490 /// \brief Emit the debug info dwo section.
491 void emitDebugInfoDWO();
493 /// \brief Emit the debug abbrev dwo section.
494 void emitDebugAbbrevDWO();
496 /// \brief Emit the debug line dwo section.
497 void emitDebugLineDWO();
499 /// \brief Emit the debug str dwo section.
500 void emitDebugStrDWO();
502 /// Flags to let the linker know we have emitted new style pubnames. Only
503 /// emit it here if we don't have a skeleton CU for split dwarf.
504 void addGnuPubAttributes(DwarfUnit &U, DIE &D) const;
506 /// \brief Create new DwarfCompileUnit for the given metadata node with tag
507 /// DW_TAG_compile_unit.
508 DwarfCompileUnit &constructDwarfCompileUnit(DICompileUnit DIUnit);
510 /// \brief Construct imported_module or imported_declaration DIE.
511 void constructImportedEntityDIE(DwarfCompileUnit &TheCU, const MDNode *N);
513 /// \brief Construct import_module DIE.
514 void constructImportedEntityDIE(DwarfCompileUnit &TheCU, const MDNode *N,
517 /// \brief Construct import_module DIE.
518 void constructImportedEntityDIE(DwarfCompileUnit &TheCU,
519 const DIImportedEntity &Module, DIE &Context);
521 /// \brief Register a source line with debug info. Returns the unique
522 /// label that was emitted and which provides correspondence to the
523 /// source line list.
524 void recordSourceLine(unsigned Line, unsigned Col, const MDNode *Scope,
527 /// \brief Indentify instructions that are marking the beginning of or
528 /// ending of a scope.
529 void identifyScopeMarkers();
531 /// \brief If Var is an current function argument that add it in
532 /// CurrentFnArguments list.
533 bool addCurrentFnArgument(DbgVariable *Var, LexicalScope *Scope);
535 /// \brief Populate LexicalScope entries with variables' info.
536 void collectVariableInfo(SmallPtrSet<const MDNode *, 16> &ProcessedVars);
538 /// \brief Collect variable information from the side table maintained
540 void collectVariableInfoFromMMITable(SmallPtrSet<const MDNode *, 16> &P);
542 /// \brief Ensure that a label will be emitted before MI.
543 void requestLabelBeforeInsn(const MachineInstr *MI) {
544 LabelsBeforeInsn.insert(std::make_pair(MI, nullptr));
547 /// \brief Return Label preceding the instruction.
548 MCSymbol *getLabelBeforeInsn(const MachineInstr *MI);
550 /// \brief Ensure that a label will be emitted after MI.
551 void requestLabelAfterInsn(const MachineInstr *MI) {
552 LabelsAfterInsn.insert(std::make_pair(MI, nullptr));
555 /// \brief Return Label immediately following the instruction.
556 MCSymbol *getLabelAfterInsn(const MachineInstr *MI);
558 void attachRangesOrLowHighPC(DwarfCompileUnit &Unit, DIE &D,
559 const SmallVectorImpl<InsnRange> &Ranges);
560 void attachLowHighPC(DwarfCompileUnit &Unit, DIE &D, MCSymbol *Begin,
564 //===--------------------------------------------------------------------===//
565 // Main entry points.
567 DwarfDebug(AsmPrinter *A, Module *M);
569 ~DwarfDebug() override;
571 void insertDIE(const MDNode *TypeMD, DIE *Die) {
572 MDTypeNodeToDieMap.insert(std::make_pair(TypeMD, Die));
574 DIE *getDIE(const MDNode *TypeMD) {
575 return MDTypeNodeToDieMap.lookup(TypeMD);
578 /// \brief Emit all Dwarf sections that should come prior to the
582 /// \brief Emit all Dwarf sections that should come after the content.
583 void endModule() override;
585 /// \brief Gather pre-function debug information.
586 void beginFunction(const MachineFunction *MF) override;
588 /// \brief Gather and emit post-function debug information.
589 void endFunction(const MachineFunction *MF) override;
591 /// \brief Process beginning of an instruction.
592 void beginInstruction(const MachineInstr *MI) override;
594 /// \brief Process end of an instruction.
595 void endInstruction() override;
597 /// \brief Add a DIE to the set of types that we're going to pull into
599 void addDwarfTypeUnitType(DwarfCompileUnit &CU, StringRef Identifier,
600 DIE &Die, DICompositeType CTy);
602 /// \brief Add a label so that arange data can be generated for it.
603 void addArangeLabel(SymbolCU SCU) { ArangeLabels.push_back(SCU); }
605 /// \brief For symbols that have a size designated (e.g. common symbols),
606 /// this tracks that size.
607 void setSymbolSize(const MCSymbol *Sym, uint64_t Size) override {
611 /// \brief Recursively Emits a debug information entry.
612 void emitDIE(DIE &Die);
614 // Experimental DWARF5 features.
616 /// \brief Returns whether or not to emit tables that dwarf consumers can
617 /// use to accelerate lookup.
618 bool useDwarfAccelTables() const { return HasDwarfAccelTables; }
620 /// \brief Returns whether or not to change the current debug info for the
621 /// split dwarf proposal support.
622 bool useSplitDwarf() const { return HasSplitDwarf; }
624 /// Returns the Dwarf Version.
625 unsigned getDwarfVersion() const { return DwarfVersion; }
627 /// Returns the section symbol for the .debug_loc section.
628 MCSymbol *getDebugLocSym() const { return DwarfDebugLocSectionSym; }
630 /// Returns the previous section that was emitted into.
631 const MCSection *getPrevSection() const { return PrevSection; }
633 /// Returns the previous CU that was being updated
634 const DwarfCompileUnit *getPrevCU() const { return PrevCU; }
636 /// Returns the entries for the .debug_loc section.
637 const SmallVectorImpl<DebugLocList> &
638 getDebugLocEntries() const {
639 return DotDebugLocEntries;
642 /// \brief Emit an entry for the debug loc section. This can be used to
643 /// handle an entry that's going to be emitted into the debug loc section.
644 void emitDebugLocEntry(ByteStreamer &Streamer, const DebugLocEntry &Entry);
646 /// Emit the location for a debug loc entry, including the size header.
647 void emitDebugLocEntryLocation(const DebugLocEntry &Entry);
649 /// Find the MDNode for the given reference.
650 template <typename T> T resolve(DIRef<T> Ref) const {
651 return Ref.resolve(TypeIdentifierMap);
654 /// \brief Return the TypeIdentifierMap.
655 const DITypeIdentifierMap &getTypeIdentifierMap() const {
656 return TypeIdentifierMap;
659 /// Find the DwarfCompileUnit for the given CU Die.
660 DwarfCompileUnit *lookupUnit(const DIE *CU) const {
661 return CUDieMap.lookup(CU);
663 /// isSubprogramContext - Return true if Context is either a subprogram
664 /// or another context nested inside a subprogram.
665 bool isSubprogramContext(const MDNode *Context);
667 void addSubprogramNames(DISubprogram SP, DIE &Die);
669 AddressPool &getAddressPool() { return AddrPool; }
671 void addAccelName(StringRef Name, const DIE &Die);
673 void addAccelObjC(StringRef Name, const DIE &Die);
675 void addAccelNamespace(StringRef Name, const DIE &Die);
677 void addAccelType(StringRef Name, const DIE &Die, char Flags);
679 } // End of namespace llvm