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;
213 // Collection of DebugLocEntry. Stored in a linked list so that DIELocLists
214 // can refer to them in spite of insertions into this list.
215 SmallVector<DebugLocList, 4> DotDebugLocEntries;
217 // Collection of subprogram DIEs that are marked (at the end of the module)
219 SmallPtrSet<DIE *, 4> InlinedSubprogramDIEs;
221 // This is a collection of subprogram MDNodes that are processed to
223 SmallPtrSet<const MDNode *, 16> ProcessedSPNodes;
225 // Maps instruction with label emitted before instruction.
226 DenseMap<const MachineInstr *, MCSymbol *> LabelsBeforeInsn;
228 // Maps instruction with label emitted after instruction.
229 DenseMap<const MachineInstr *, MCSymbol *> LabelsAfterInsn;
231 // History of DBG_VALUE and clobber instructions for each user variable.
232 // Variables are listed in order of appearance.
233 DbgValueHistoryMap DbgValues;
235 // Previous instruction's location information. This is used to determine
236 // label location to indicate scope boundries in dwarf debug info.
237 DebugLoc PrevInstLoc;
240 // This location indicates end of function prologue and beginning of function
242 DebugLoc PrologEndLoc;
244 // If nonnull, stores the current machine function we're processing.
245 const MachineFunction *CurFn;
247 // If nonnull, stores the current machine instruction we're processing.
248 const MachineInstr *CurMI;
250 // If nonnull, stores the section that the previous function was allocated to
252 const MCSection *PrevSection;
254 // If nonnull, stores the CU in which the previous subprogram was contained.
255 const DwarfCompileUnit *PrevCU;
257 // Section Symbols: these are assembler temporary labels that are emitted at
258 // the beginning of each supported dwarf section. These are used to form
259 // section offsets and are created by EmitSectionLabels.
260 MCSymbol *DwarfInfoSectionSym, *DwarfAbbrevSectionSym;
261 MCSymbol *DwarfStrSectionSym, *TextSectionSym, *DwarfDebugRangeSectionSym;
262 MCSymbol *DwarfDebugLocSectionSym, *DwarfLineSectionSym, *DwarfAddrSectionSym;
263 MCSymbol *FunctionBeginSym, *FunctionEndSym;
264 MCSymbol *DwarfInfoDWOSectionSym, *DwarfAbbrevDWOSectionSym;
265 MCSymbol *DwarfStrDWOSectionSym;
266 MCSymbol *DwarfGnuPubNamesSectionSym, *DwarfGnuPubTypesSectionSym;
268 // As an optimization, there is no need to emit an entry in the directory
269 // table for the same directory as DW_AT_comp_dir.
270 StringRef CompilationDir;
272 // Counter for assigning globally unique IDs for ranges.
273 unsigned GlobalRangeCount;
275 // Holder for the file specific debug information.
276 DwarfFile InfoHolder;
278 // Holders for the various debug information flags that we might need to
279 // have exposed. See accessor functions below for description.
281 // Holder for imported entities.
282 typedef SmallVector<std::pair<const MDNode *, const MDNode *>, 32>
284 ImportedEntityMap ScopesWithImportedEntities;
286 // Map from MDNodes for user-defined types to the type units that describe
288 DenseMap<const MDNode *, const DwarfTypeUnit *> DwarfTypeUnits;
290 SmallVector<std::pair<std::unique_ptr<DwarfTypeUnit>, DICompositeType>, 1> TypeUnitsUnderConstruction;
292 // Whether to emit the pubnames/pubtypes sections.
293 bool HasDwarfPubSections;
295 // Whether or not to use AT_ranges for compilation units.
298 // Whether we emitted a function into a section other than the default
300 bool UsedNonDefaultText;
302 // Version of dwarf we're emitting.
303 unsigned DwarfVersion;
305 // Maps from a type identifier to the actual MDNode.
306 DITypeIdentifierMap TypeIdentifierMap;
308 // DWARF5 Experimental Options
309 bool HasDwarfAccelTables;
312 // Separated Dwarf Variables
313 // In general these will all be for bits that are left in the
314 // original object file, rather than things that are meant
315 // to be in the .dwo sections.
317 // Holder for the skeleton information.
318 DwarfFile SkeletonHolder;
320 /// Store file names for type units under fission in a line table header that
321 /// will be emitted into debug_line.dwo.
322 // FIXME: replace this with a map from comp_dir to table so that we can emit
323 // multiple tables during LTO each of which uses directory 0, referencing the
324 // comp_dir of all the type units that use it.
325 MCDwarfDwoLineTable SplitTypeUnitFileTable;
327 // True iff there are multiple CUs in this module.
330 AddressPool AddrPool;
332 DwarfAccelTable AccelNames;
333 DwarfAccelTable AccelObjC;
334 DwarfAccelTable AccelNamespace;
335 DwarfAccelTable AccelTypes;
337 MCDwarfDwoLineTable *getDwoLineTable(const DwarfCompileUnit &);
339 void addScopeVariable(LexicalScope *LS, DbgVariable *Var);
341 const SmallVectorImpl<std::unique_ptr<DwarfUnit>> &getUnits() {
342 return InfoHolder.getUnits();
345 /// \brief Find abstract variable associated with Var.
346 DbgVariable *getExistingAbstractVariable(DIVariable &DV,
347 DIVariable &Cleansed);
348 DbgVariable *createAbstractVariable(DIVariable &DV, LexicalScope *Scope);
349 DbgVariable *getOrCreateAbstractVariable(DIVariable &Var,
350 const MDNode *Scope);
351 DbgVariable *findAbstractVariable(DIVariable &Var, 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 finishSubprogramDefinitions();
407 /// \brief Finish off debug information after all functions have been
409 void finalizeModuleInfo();
411 /// \brief Emit labels to close any remaining sections that have been left
415 /// \brief Emit the debug info section.
416 void emitDebugInfo();
418 /// \brief Emit the abbreviation section.
419 void emitAbbreviations();
421 /// \brief Emit the last address of the section and the end of
423 void emitEndOfLineMatrix(unsigned SectionEnd);
425 /// \brief Emit visible names into a hashed accelerator table section.
426 void emitAccelNames();
428 /// \brief Emit objective C classes and categories into a hashed
429 /// accelerator table section.
430 void emitAccelObjC();
432 /// \brief Emit namespace dies into a hashed accelerator table.
433 void emitAccelNamespaces();
435 /// \brief Emit type dies into a hashed accelerator table.
436 void emitAccelTypes();
438 /// \brief Emit visible names into a debug pubnames section.
439 /// \param GnuStyle determines whether or not we want to emit
440 /// additional information into the table ala newer gcc for gdb
442 void emitDebugPubNames(bool GnuStyle = false);
444 /// \brief Emit visible types into a debug pubtypes section.
445 /// \param GnuStyle determines whether or not we want to emit
446 /// additional information into the table ala newer gcc for gdb
448 void emitDebugPubTypes(bool GnuStyle = false);
451 emitDebugPubSection(bool GnuStyle, const MCSection *PSec, StringRef Name,
452 const StringMap<const DIE *> &(DwarfUnit::*Accessor)()
455 /// \brief Emit visible names into a debug str section.
458 /// \brief Emit visible names into a debug loc section.
461 /// \brief Emit visible names into a debug loc dwo section.
462 void emitDebugLocDWO();
464 /// \brief Emit visible names into a debug aranges section.
465 void emitDebugARanges();
467 /// \brief Emit visible names into a debug ranges section.
468 void emitDebugRanges();
470 /// \brief Emit inline info using custom format.
471 void emitDebugInlineInfo();
473 /// DWARF 5 Experimental Split Dwarf Emitters
475 /// \brief Initialize common features of skeleton units.
476 void initSkeletonUnit(const DwarfUnit &U, DIE &Die,
477 std::unique_ptr<DwarfUnit> NewU);
479 /// \brief Construct the split debug info compile unit for the debug info
481 DwarfCompileUnit &constructSkeletonCU(const DwarfCompileUnit &CU);
483 /// \brief Construct the split debug info compile unit for the debug info
485 DwarfTypeUnit &constructSkeletonTU(DwarfTypeUnit &TU);
487 /// \brief Emit the debug info dwo section.
488 void emitDebugInfoDWO();
490 /// \brief Emit the debug abbrev dwo section.
491 void emitDebugAbbrevDWO();
493 /// \brief Emit the debug line dwo section.
494 void emitDebugLineDWO();
496 /// \brief Emit the debug str dwo section.
497 void emitDebugStrDWO();
499 /// Flags to let the linker know we have emitted new style pubnames. Only
500 /// emit it here if we don't have a skeleton CU for split dwarf.
501 void addGnuPubAttributes(DwarfUnit &U, DIE &D) const;
503 /// \brief Create new DwarfCompileUnit for the given metadata node with tag
504 /// DW_TAG_compile_unit.
505 DwarfCompileUnit &constructDwarfCompileUnit(DICompileUnit DIUnit);
507 /// \brief Construct imported_module or imported_declaration DIE.
508 void constructImportedEntityDIE(DwarfCompileUnit &TheCU, const MDNode *N);
510 /// \brief Construct import_module DIE.
511 void constructImportedEntityDIE(DwarfCompileUnit &TheCU, const MDNode *N,
514 /// \brief Construct import_module DIE.
515 void constructImportedEntityDIE(DwarfCompileUnit &TheCU,
516 const DIImportedEntity &Module, DIE &Context);
518 /// \brief Register a source line with debug info. Returns the unique
519 /// label that was emitted and which provides correspondence to the
520 /// source line list.
521 void recordSourceLine(unsigned Line, unsigned Col, const MDNode *Scope,
524 /// \brief Indentify instructions that are marking the beginning of or
525 /// ending of a scope.
526 void identifyScopeMarkers();
528 /// \brief If Var is an current function argument that add it in
529 /// CurrentFnArguments list.
530 bool addCurrentFnArgument(DbgVariable *Var, LexicalScope *Scope);
532 /// \brief Populate LexicalScope entries with variables' info.
533 void collectVariableInfo(SmallPtrSet<const MDNode *, 16> &ProcessedVars);
535 /// \brief Collect variable information from the side table maintained
537 void collectVariableInfoFromMMITable(SmallPtrSet<const MDNode *, 16> &P);
539 /// \brief Ensure that a label will be emitted before MI.
540 void requestLabelBeforeInsn(const MachineInstr *MI) {
541 LabelsBeforeInsn.insert(std::make_pair(MI, nullptr));
544 /// \brief Return Label preceding the instruction.
545 MCSymbol *getLabelBeforeInsn(const MachineInstr *MI);
547 /// \brief Ensure that a label will be emitted after MI.
548 void requestLabelAfterInsn(const MachineInstr *MI) {
549 LabelsAfterInsn.insert(std::make_pair(MI, nullptr));
552 /// \brief Return Label immediately following the instruction.
553 MCSymbol *getLabelAfterInsn(const MachineInstr *MI);
555 void attachRangesOrLowHighPC(DwarfCompileUnit &Unit, DIE &D,
556 const SmallVectorImpl<InsnRange> &Ranges);
557 void attachLowHighPC(DwarfCompileUnit &Unit, DIE &D, MCSymbol *Begin,
561 //===--------------------------------------------------------------------===//
562 // Main entry points.
564 DwarfDebug(AsmPrinter *A, Module *M);
566 ~DwarfDebug() override;
568 void insertDIE(const MDNode *TypeMD, DIE *Die) {
569 MDTypeNodeToDieMap.insert(std::make_pair(TypeMD, Die));
571 DIE *getDIE(const MDNode *TypeMD) {
572 return MDTypeNodeToDieMap.lookup(TypeMD);
575 /// \brief Emit all Dwarf sections that should come prior to the
579 /// \brief Emit all Dwarf sections that should come after the content.
580 void endModule() override;
582 /// \brief Gather pre-function debug information.
583 void beginFunction(const MachineFunction *MF) override;
585 /// \brief Gather and emit post-function debug information.
586 void endFunction(const MachineFunction *MF) override;
588 /// \brief Process beginning of an instruction.
589 void beginInstruction(const MachineInstr *MI) override;
591 /// \brief Process end of an instruction.
592 void endInstruction() override;
594 /// \brief Add a DIE to the set of types that we're going to pull into
596 void addDwarfTypeUnitType(DwarfCompileUnit &CU, StringRef Identifier,
597 DIE &Die, DICompositeType CTy);
599 /// \brief Add a label so that arange data can be generated for it.
600 void addArangeLabel(SymbolCU SCU) { ArangeLabels.push_back(SCU); }
602 /// \brief For symbols that have a size designated (e.g. common symbols),
603 /// this tracks that size.
604 void setSymbolSize(const MCSymbol *Sym, uint64_t Size) override {
608 /// \brief Recursively Emits a debug information entry.
609 void emitDIE(DIE &Die);
611 // Experimental DWARF5 features.
613 /// \brief Returns whether or not to emit tables that dwarf consumers can
614 /// use to accelerate lookup.
615 bool useDwarfAccelTables() const { return HasDwarfAccelTables; }
617 /// \brief Returns whether or not to change the current debug info for the
618 /// split dwarf proposal support.
619 bool useSplitDwarf() const { return HasSplitDwarf; }
621 /// Returns the Dwarf Version.
622 unsigned getDwarfVersion() const { return DwarfVersion; }
624 /// Returns the section symbol for the .debug_loc section.
625 MCSymbol *getDebugLocSym() const { return DwarfDebugLocSectionSym; }
627 /// Returns the previous section that was emitted into.
628 const MCSection *getPrevSection() const { return PrevSection; }
630 /// Returns the previous CU that was being updated
631 const DwarfCompileUnit *getPrevCU() const { return PrevCU; }
633 /// Returns the entries for the .debug_loc section.
634 const SmallVectorImpl<DebugLocList> &
635 getDebugLocEntries() const {
636 return DotDebugLocEntries;
639 /// \brief Emit an entry for the debug loc section. This can be used to
640 /// handle an entry that's going to be emitted into the debug loc section.
641 void emitDebugLocEntry(ByteStreamer &Streamer, const DebugLocEntry &Entry);
643 /// Emit the location for a debug loc entry, including the size header.
644 void emitDebugLocEntryLocation(const DebugLocEntry &Entry);
646 /// Find the MDNode for the given reference.
647 template <typename T> T resolve(DIRef<T> Ref) const {
648 return Ref.resolve(TypeIdentifierMap);
651 /// \brief Return the TypeIdentifierMap.
652 const DITypeIdentifierMap &getTypeIdentifierMap() const {
653 return TypeIdentifierMap;
656 /// Find the DwarfCompileUnit for the given CU Die.
657 DwarfCompileUnit *lookupUnit(const DIE *CU) const {
658 return CUDieMap.lookup(CU);
660 /// isSubprogramContext - Return true if Context is either a subprogram
661 /// or another context nested inside a subprogram.
662 bool isSubprogramContext(const MDNode *Context);
664 void addSubprogramNames(DISubprogram SP, DIE &Die);
666 AddressPool &getAddressPool() { return AddrPool; }
668 void addAccelName(StringRef Name, const DIE &Die);
670 void addAccelObjC(StringRef Name, const DIE &Die);
672 void addAccelNamespace(StringRef Name, const DIE &Die);
674 void addAccelType(StringRef Name, const DIE &Die, char Flags);
676 } // End of namespace llvm