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 const MachineInstr *MInsn; // DBG_VALUE instruction of the variable.
80 /// Construct a DbgVariable from a DIVariable.
81 DbgVariable(DIVariable V, DwarfDebug *DD)
82 : Var(V), TheDIE(nullptr), DotDebugLocOffset(~0U), MInsn(nullptr),
83 FrameIndex(~0), DD(DD) {}
85 /// Construct a DbgVariable from a DEBUG_VALUE.
86 /// AbstractVar may be NULL.
87 DbgVariable(const MachineInstr *DbgValue, DwarfDebug *DD)
88 : Var(DbgValue->getDebugVariable()), TheDIE(nullptr),
89 DotDebugLocOffset(~0U), MInsn(DbgValue), FrameIndex(~0), DD(DD) {}
92 DIVariable getVariable() const { return Var; }
93 void setDIE(DIE &D) { TheDIE = &D; }
94 DIE *getDIE() const { return TheDIE; }
95 void setDotDebugLocOffset(unsigned O) { DotDebugLocOffset = O; }
96 unsigned getDotDebugLocOffset() const { return DotDebugLocOffset; }
97 StringRef getName() const { return Var.getName(); }
98 const MachineInstr *getMInsn() const { return MInsn; }
99 int getFrameIndex() const { return FrameIndex; }
100 void setFrameIndex(int FI) { FrameIndex = FI; }
101 // Translate tag to proper Dwarf tag.
102 dwarf::Tag getTag() const {
103 if (Var.getTag() == dwarf::DW_TAG_arg_variable)
104 return dwarf::DW_TAG_formal_parameter;
106 return dwarf::DW_TAG_variable;
108 /// \brief Return true if DbgVariable is artificial.
109 bool isArtificial() const {
110 if (Var.isArtificial())
112 if (getType().isArtificial())
117 bool isObjectPointer() const {
118 if (Var.isObjectPointer())
120 if (getType().isObjectPointer())
125 bool variableHasComplexAddress() const {
126 assert(Var.isVariable() && "Invalid complex DbgVariable!");
127 return Var.hasComplexAddress();
129 bool isBlockByrefVariable() const;
130 unsigned getNumAddrElements() const {
131 assert(Var.isVariable() && "Invalid complex DbgVariable!");
132 return Var.getNumAddrElements();
134 uint64_t getAddrElement(unsigned i) const { return Var.getAddrElement(i); }
135 DIType getType() const;
138 /// resolve - Look in the DwarfDebug map for the MDNode that
139 /// corresponds to the reference.
140 template <typename T> T resolve(DIRef<T> Ref) const;
144 /// \brief Helper used to pair up a symbol and its DWARF compile unit.
146 SymbolCU(DwarfCompileUnit *CU, const MCSymbol *Sym) : Sym(Sym), CU(CU) {}
148 DwarfCompileUnit *CU;
151 /// \brief Collects and handles dwarf debug information.
152 class DwarfDebug : public AsmPrinterHandler {
153 // Target of Dwarf emission.
156 // Collected machine module information.
157 MachineModuleInfo *MMI;
159 // All DIEValues are allocated through this allocator.
160 BumpPtrAllocator DIEValueAllocator;
162 // Handle to the compile unit used for the inline extension handling,
163 // this is just so that the DIEValue allocator has a place to store
164 // the particular elements.
165 // FIXME: Store these off of DwarfDebug instead?
166 DwarfCompileUnit *FirstCU;
168 // Maps MDNode with its corresponding DwarfCompileUnit.
169 MapVector<const MDNode *, DwarfCompileUnit *> CUMap;
171 // Maps subprogram MDNode with its corresponding DwarfCompileUnit.
172 DenseMap<const MDNode *, DwarfCompileUnit *> SPMap;
174 // Maps a CU DIE with its corresponding DwarfCompileUnit.
175 DenseMap<const DIE *, DwarfCompileUnit *> CUDieMap;
177 /// Maps MDNodes for type system with the corresponding DIEs. These DIEs can
178 /// be shared across CUs, that is why we keep the map here instead
179 /// of in DwarfCompileUnit.
180 DenseMap<const MDNode *, DIE *> MDTypeNodeToDieMap;
182 // List of all labels used in aranges generation.
183 std::vector<SymbolCU> ArangeLabels;
185 // Size of each symbol emitted (for those symbols that have a specific size).
186 DenseMap<const MCSymbol *, uint64_t> SymSize;
188 // Provides a unique id per text section.
189 typedef DenseMap<const MCSection *, SmallVector<SymbolCU, 8> > SectionMapType;
190 SectionMapType SectionMap;
192 // List of arguments for current function.
193 SmallVector<DbgVariable *, 8> CurrentFnArguments;
195 LexicalScopes LScopes;
197 // Collection of abstract subprogram DIEs.
198 DenseMap<const MDNode *, DIE *> AbstractSPDies;
200 // Collection of dbg variables of a scope.
201 typedef DenseMap<LexicalScope *, SmallVector<DbgVariable *, 8> >
203 ScopeVariablesMap ScopeVariables;
205 // Collection of abstract variables.
206 DenseMap<const MDNode *, std::unique_ptr<DbgVariable>> AbstractVariables;
207 SmallVector<std::unique_ptr<DbgVariable>, 64> ConcreteVariables;
209 // Collection of DebugLocEntry. Stored in a linked list so that DIELocLists
210 // can refer to them in spite of insertions into this list.
211 SmallVector<DebugLocList, 4> DotDebugLocEntries;
213 // Collection of subprogram DIEs that are marked (at the end of the module)
215 SmallPtrSet<DIE *, 4> InlinedSubprogramDIEs;
217 // This is a collection of subprogram MDNodes that are processed to
219 SmallPtrSet<const MDNode *, 16> ProcessedSPNodes;
221 // Maps instruction with label emitted before instruction.
222 DenseMap<const MachineInstr *, MCSymbol *> LabelsBeforeInsn;
224 // Maps instruction with label emitted after instruction.
225 DenseMap<const MachineInstr *, MCSymbol *> LabelsAfterInsn;
227 // History of DBG_VALUE and clobber instructions for each user variable.
228 // Variables are listed in order of appearance.
229 DbgValueHistoryMap DbgValues;
231 // Previous instruction's location information. This is used to determine
232 // label location to indicate scope boundries in dwarf debug info.
233 DebugLoc PrevInstLoc;
236 // This location indicates end of function prologue and beginning of function
238 DebugLoc PrologEndLoc;
240 // If nonnull, stores the current machine function we're processing.
241 const MachineFunction *CurFn;
243 // If nonnull, stores the current machine instruction we're processing.
244 const MachineInstr *CurMI;
246 // If nonnull, stores the section that the previous function was allocated to
248 const MCSection *PrevSection;
250 // If nonnull, stores the CU in which the previous subprogram was contained.
251 const DwarfCompileUnit *PrevCU;
253 // Section Symbols: these are assembler temporary labels that are emitted at
254 // the beginning of each supported dwarf section. These are used to form
255 // section offsets and are created by EmitSectionLabels.
256 MCSymbol *DwarfInfoSectionSym, *DwarfAbbrevSectionSym;
257 MCSymbol *DwarfStrSectionSym, *TextSectionSym, *DwarfDebugRangeSectionSym;
258 MCSymbol *DwarfDebugLocSectionSym, *DwarfLineSectionSym, *DwarfAddrSectionSym;
259 MCSymbol *FunctionBeginSym, *FunctionEndSym;
260 MCSymbol *DwarfInfoDWOSectionSym, *DwarfAbbrevDWOSectionSym;
261 MCSymbol *DwarfStrDWOSectionSym;
262 MCSymbol *DwarfGnuPubNamesSectionSym, *DwarfGnuPubTypesSectionSym;
264 // As an optimization, there is no need to emit an entry in the directory
265 // table for the same directory as DW_AT_comp_dir.
266 StringRef CompilationDir;
268 // Counter for assigning globally unique IDs for ranges.
269 unsigned GlobalRangeCount;
271 // Holder for the file specific debug information.
272 DwarfFile InfoHolder;
274 // Holders for the various debug information flags that we might need to
275 // have exposed. See accessor functions below for description.
277 // Holder for imported entities.
278 typedef SmallVector<std::pair<const MDNode *, const MDNode *>, 32>
280 ImportedEntityMap ScopesWithImportedEntities;
282 // Map from MDNodes for user-defined types to the type units that describe
284 DenseMap<const MDNode *, const DwarfTypeUnit *> DwarfTypeUnits;
286 SmallVector<std::pair<std::unique_ptr<DwarfTypeUnit>, DICompositeType>, 1> TypeUnitsUnderConstruction;
288 // Whether to emit the pubnames/pubtypes sections.
289 bool HasDwarfPubSections;
291 // Whether or not to use AT_ranges for compilation units.
294 // Whether we emitted a function into a section other than the default
296 bool UsedNonDefaultText;
298 // Version of dwarf we're emitting.
299 unsigned DwarfVersion;
301 // Maps from a type identifier to the actual MDNode.
302 DITypeIdentifierMap TypeIdentifierMap;
304 // DWARF5 Experimental Options
305 bool HasDwarfAccelTables;
308 // Separated Dwarf Variables
309 // In general these will all be for bits that are left in the
310 // original object file, rather than things that are meant
311 // to be in the .dwo sections.
313 // Holder for the skeleton information.
314 DwarfFile SkeletonHolder;
316 /// Store file names for type units under fission in a line table header that
317 /// will be emitted into debug_line.dwo.
318 // FIXME: replace this with a map from comp_dir to table so that we can emit
319 // multiple tables during LTO each of which uses directory 0, referencing the
320 // comp_dir of all the type units that use it.
321 MCDwarfDwoLineTable SplitTypeUnitFileTable;
323 // True iff there are multiple CUs in this module.
326 AddressPool AddrPool;
328 DwarfAccelTable AccelNames;
329 DwarfAccelTable AccelObjC;
330 DwarfAccelTable AccelNamespace;
331 DwarfAccelTable AccelTypes;
333 DenseMap<const Function *, DISubprogram> FunctionDIs;
335 MCDwarfDwoLineTable *getDwoLineTable(const DwarfCompileUnit &);
337 void addScopeVariable(LexicalScope *LS, DbgVariable *Var);
339 const SmallVectorImpl<std::unique_ptr<DwarfUnit>> &getUnits() {
340 return InfoHolder.getUnits();
343 /// \brief Find abstract variable associated with Var.
344 DbgVariable *getExistingAbstractVariable(const DIVariable &DV,
345 DIVariable &Cleansed);
346 DbgVariable *getExistingAbstractVariable(const DIVariable &DV);
347 void createAbstractVariable(const DIVariable &DV, LexicalScope *Scope);
348 void ensureAbstractVariableIsCreated(const DIVariable &Var,
349 const MDNode *Scope);
350 void ensureAbstractVariableIsCreatedIfScoped(const DIVariable &Var,
351 const MDNode *Scope);
353 /// \brief Find DIE for the given subprogram and attach appropriate
354 /// DW_AT_low_pc and DW_AT_high_pc attributes. If there are global
355 /// variables in this scope then create and insert DIEs for these
357 DIE &updateSubprogramScopeDIE(DwarfCompileUnit &SPCU, DISubprogram SP);
359 /// \brief A helper function to check whether the DIE for a given Scope is
360 /// going to be null.
361 bool isLexicalScopeDIENull(LexicalScope *Scope);
363 /// \brief A helper function to construct a RangeSpanList for a given
365 void addScopeRangeList(DwarfCompileUnit &TheCU, DIE &ScopeDIE,
366 const SmallVectorImpl<InsnRange> &Range);
368 /// \brief Construct new DW_TAG_lexical_block for this scope and
369 /// attach DW_AT_low_pc/DW_AT_high_pc labels.
370 std::unique_ptr<DIE> constructLexicalScopeDIE(DwarfCompileUnit &TheCU,
371 LexicalScope *Scope);
373 /// \brief This scope represents inlined body of a function. Construct
374 /// DIE to represent this concrete inlined copy of the function.
375 std::unique_ptr<DIE> constructInlinedScopeDIE(DwarfCompileUnit &TheCU,
376 LexicalScope *Scope);
378 /// \brief Construct a DIE for this scope.
379 std::unique_ptr<DIE> constructScopeDIE(DwarfCompileUnit &TheCU,
380 LexicalScope *Scope);
381 void createAndAddScopeChildren(DwarfCompileUnit &TheCU, LexicalScope *Scope,
383 /// \brief Construct a DIE for this abstract scope.
384 void constructAbstractSubprogramScopeDIE(DwarfCompileUnit &TheCU,
385 LexicalScope *Scope);
386 /// \brief Construct a DIE for this subprogram scope.
387 DIE &constructSubprogramScopeDIE(DwarfCompileUnit &TheCU,
388 LexicalScope *Scope);
389 /// A helper function to create children of a Scope DIE.
390 DIE *createScopeChildrenDIE(DwarfCompileUnit &TheCU, LexicalScope *Scope,
391 SmallVectorImpl<std::unique_ptr<DIE>> &Children);
393 /// \brief Emit initial Dwarf sections with a label at the start of each one.
394 void emitSectionLabels();
396 /// \brief Compute the size and offset of a DIE given an incoming Offset.
397 unsigned computeSizeAndOffset(DIE *Die, unsigned Offset);
399 /// \brief Compute the size and offset of all the DIEs.
400 void computeSizeAndOffsets();
402 /// \brief Collect info for variables that were optimized out.
403 void collectDeadVariables();
405 void finishVariableDefinitions();
407 void finishSubprogramDefinitions();
409 /// \brief Finish off debug information after all functions have been
411 void finalizeModuleInfo();
413 /// \brief Emit labels to close any remaining sections that have been left
417 /// \brief Emit the debug info section.
418 void emitDebugInfo();
420 /// \brief Emit the abbreviation section.
421 void emitAbbreviations();
423 /// \brief Emit the last address of the section and the end of
425 void emitEndOfLineMatrix(unsigned SectionEnd);
427 /// \brief Emit visible names into a hashed accelerator table section.
428 void emitAccelNames();
430 /// \brief Emit objective C classes and categories into a hashed
431 /// accelerator table section.
432 void emitAccelObjC();
434 /// \brief Emit namespace dies into a hashed accelerator table.
435 void emitAccelNamespaces();
437 /// \brief Emit type dies into a hashed accelerator table.
438 void emitAccelTypes();
440 /// \brief Emit visible names into a debug pubnames section.
441 /// \param GnuStyle determines whether or not we want to emit
442 /// additional information into the table ala newer gcc for gdb
444 void emitDebugPubNames(bool GnuStyle = false);
446 /// \brief Emit visible types into a debug pubtypes section.
447 /// \param GnuStyle determines whether or not we want to emit
448 /// additional information into the table ala newer gcc for gdb
450 void emitDebugPubTypes(bool GnuStyle = false);
453 emitDebugPubSection(bool GnuStyle, const MCSection *PSec, StringRef Name,
454 const StringMap<const DIE *> &(DwarfUnit::*Accessor)()
457 /// \brief Emit visible names into a debug str section.
460 /// \brief Emit visible names into a debug loc section.
463 /// \brief Emit visible names into a debug loc dwo section.
464 void emitDebugLocDWO();
466 /// \brief Emit visible names into a debug aranges section.
467 void emitDebugARanges();
469 /// \brief Emit visible names into a debug ranges section.
470 void emitDebugRanges();
472 /// \brief Emit inline info using custom format.
473 void emitDebugInlineInfo();
475 /// DWARF 5 Experimental Split Dwarf Emitters
477 /// \brief Initialize common features of skeleton units.
478 void initSkeletonUnit(const DwarfUnit &U, DIE &Die,
479 std::unique_ptr<DwarfUnit> NewU);
481 /// \brief Construct the split debug info compile unit for the debug info
483 DwarfCompileUnit &constructSkeletonCU(const DwarfCompileUnit &CU);
485 /// \brief Construct the split debug info compile unit for the debug info
487 DwarfTypeUnit &constructSkeletonTU(DwarfTypeUnit &TU);
489 /// \brief Emit the debug info dwo section.
490 void emitDebugInfoDWO();
492 /// \brief Emit the debug abbrev dwo section.
493 void emitDebugAbbrevDWO();
495 /// \brief Emit the debug line dwo section.
496 void emitDebugLineDWO();
498 /// \brief Emit the debug str dwo section.
499 void emitDebugStrDWO();
501 /// Flags to let the linker know we have emitted new style pubnames. Only
502 /// emit it here if we don't have a skeleton CU for split dwarf.
503 void addGnuPubAttributes(DwarfUnit &U, DIE &D) const;
505 /// \brief Create new DwarfCompileUnit for the given metadata node with tag
506 /// DW_TAG_compile_unit.
507 DwarfCompileUnit &constructDwarfCompileUnit(DICompileUnit DIUnit);
509 /// \brief Construct imported_module or imported_declaration DIE.
510 void constructImportedEntityDIE(DwarfCompileUnit &TheCU, const MDNode *N);
512 /// \brief Construct import_module DIE.
513 void constructImportedEntityDIE(DwarfCompileUnit &TheCU, const MDNode *N,
516 /// \brief Construct import_module DIE.
517 void constructImportedEntityDIE(DwarfCompileUnit &TheCU,
518 const DIImportedEntity &Module, DIE &Context);
520 /// \brief Register a source line with debug info. Returns the unique
521 /// label that was emitted and which provides correspondence to the
522 /// source line list.
523 void recordSourceLine(unsigned Line, unsigned Col, const MDNode *Scope,
526 /// \brief Indentify instructions that are marking the beginning of or
527 /// ending of a scope.
528 void identifyScopeMarkers();
530 /// \brief If Var is an current function argument that add it in
531 /// CurrentFnArguments list.
532 bool addCurrentFnArgument(DbgVariable *Var, LexicalScope *Scope);
534 /// \brief Populate LexicalScope entries with variables' info.
535 void collectVariableInfo(SmallPtrSet<const MDNode *, 16> &ProcessedVars);
537 /// \brief Collect variable information from the side table maintained
539 void collectVariableInfoFromMMITable(SmallPtrSet<const MDNode *, 16> &P);
541 /// \brief Ensure that a label will be emitted before MI.
542 void requestLabelBeforeInsn(const MachineInstr *MI) {
543 LabelsBeforeInsn.insert(std::make_pair(MI, nullptr));
546 /// \brief Return Label preceding the instruction.
547 MCSymbol *getLabelBeforeInsn(const MachineInstr *MI);
549 /// \brief Ensure that a label will be emitted after MI.
550 void requestLabelAfterInsn(const MachineInstr *MI) {
551 LabelsAfterInsn.insert(std::make_pair(MI, nullptr));
554 /// \brief Return Label immediately following the instruction.
555 MCSymbol *getLabelAfterInsn(const MachineInstr *MI);
557 void attachRangesOrLowHighPC(DwarfCompileUnit &Unit, DIE &D,
558 const SmallVectorImpl<InsnRange> &Ranges);
559 void attachLowHighPC(DwarfCompileUnit &Unit, DIE &D, MCSymbol *Begin,
563 //===--------------------------------------------------------------------===//
564 // Main entry points.
566 DwarfDebug(AsmPrinter *A, Module *M);
568 ~DwarfDebug() override;
570 void insertDIE(const MDNode *TypeMD, DIE *Die) {
571 MDTypeNodeToDieMap.insert(std::make_pair(TypeMD, Die));
573 DIE *getDIE(const MDNode *TypeMD) {
574 return MDTypeNodeToDieMap.lookup(TypeMD);
577 /// \brief Emit all Dwarf sections that should come prior to the
581 /// \brief Emit all Dwarf sections that should come after the content.
582 void endModule() override;
584 /// \brief Gather pre-function debug information.
585 void beginFunction(const MachineFunction *MF) override;
587 /// \brief Gather and emit post-function debug information.
588 void endFunction(const MachineFunction *MF) override;
590 /// \brief Process beginning of an instruction.
591 void beginInstruction(const MachineInstr *MI) override;
593 /// \brief Process end of an instruction.
594 void endInstruction() override;
596 /// \brief Add a DIE to the set of types that we're going to pull into
598 void addDwarfTypeUnitType(DwarfCompileUnit &CU, StringRef Identifier,
599 DIE &Die, DICompositeType CTy);
601 /// \brief Add a label so that arange data can be generated for it.
602 void addArangeLabel(SymbolCU SCU) { ArangeLabels.push_back(SCU); }
604 /// \brief For symbols that have a size designated (e.g. common symbols),
605 /// this tracks that size.
606 void setSymbolSize(const MCSymbol *Sym, uint64_t Size) override {
610 /// \brief Recursively Emits a debug information entry.
611 void emitDIE(DIE &Die);
613 // Experimental DWARF5 features.
615 /// \brief Returns whether or not to emit tables that dwarf consumers can
616 /// use to accelerate lookup.
617 bool useDwarfAccelTables() const { return HasDwarfAccelTables; }
619 /// \brief Returns whether or not to change the current debug info for the
620 /// split dwarf proposal support.
621 bool useSplitDwarf() const { return HasSplitDwarf; }
623 /// Returns the Dwarf Version.
624 unsigned getDwarfVersion() const { return DwarfVersion; }
626 /// Returns the section symbol for the .debug_loc section.
627 MCSymbol *getDebugLocSym() const { return DwarfDebugLocSectionSym; }
629 /// Returns the previous section that was emitted into.
630 const MCSection *getPrevSection() const { return PrevSection; }
632 /// Returns the previous CU that was being updated
633 const DwarfCompileUnit *getPrevCU() const { return PrevCU; }
635 /// Returns the entries for the .debug_loc section.
636 const SmallVectorImpl<DebugLocList> &
637 getDebugLocEntries() const {
638 return DotDebugLocEntries;
641 /// \brief Emit an entry for the debug loc section. This can be used to
642 /// handle an entry that's going to be emitted into the debug loc section.
643 void emitDebugLocEntry(ByteStreamer &Streamer, const DebugLocEntry &Entry);
645 /// Emit the location for a debug loc entry, including the size header.
646 void emitDebugLocEntryLocation(const DebugLocEntry &Entry);
648 /// Find the MDNode for the given reference.
649 template <typename T> T resolve(DIRef<T> Ref) const {
650 return Ref.resolve(TypeIdentifierMap);
653 /// \brief Return the TypeIdentifierMap.
654 const DITypeIdentifierMap &getTypeIdentifierMap() const {
655 return TypeIdentifierMap;
658 /// Find the DwarfCompileUnit for the given CU Die.
659 DwarfCompileUnit *lookupUnit(const DIE *CU) const {
660 return CUDieMap.lookup(CU);
662 /// isSubprogramContext - Return true if Context is either a subprogram
663 /// or another context nested inside a subprogram.
664 bool isSubprogramContext(const MDNode *Context);
666 void addSubprogramNames(DISubprogram SP, DIE &Die);
668 AddressPool &getAddressPool() { return AddrPool; }
670 void addAccelName(StringRef Name, const DIE &Die);
672 void addAccelObjC(StringRef Name, const DIE &Die);
674 void addAccelNamespace(StringRef Name, const DIE &Die);
676 void addAccelType(StringRef Name, const DIE &Die, char Flags);
678 } // End of namespace llvm