7025b712f0e7cf982c8f4e5d6ca19612fdc42f29
1 //===-- llvm/CodeGen/DwarfUnit.h - Dwarf Compile Unit ---*- C++ -*--===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file contains support for writing dwarf compile unit.
11 //
12 //===----------------------------------------------------------------------===//
14 #ifndef CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
15 #define CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
17 #include "DIE.h"
18 #include "DwarfDebug.h"
19 #include "llvm/ADT/DenseMap.h"
20 #include "llvm/ADT/Optional.h"
21 #include "llvm/ADT/StringMap.h"
22 #include "llvm/CodeGen/AsmPrinter.h"
23 #include "llvm/IR/DIBuilder.h"
24 #include "llvm/IR/DebugInfo.h"
25 #include "llvm/MC/MCExpr.h"
26 #include "llvm/MC/MCSection.h"
27 #include "llvm/MC/MCDwarf.h"
29 namespace llvm {
31 class MachineLocation;
32 class MachineOperand;
33 class ConstantInt;
34 class ConstantFP;
35 class DbgVariable;
36 class DwarfCompileUnit;
38 // Data structure to hold a range for range lists.
39 class RangeSpan {
40 public:
41 RangeSpan(MCSymbol *S, MCSymbol *E) : Start(S), End(E) {}
42 const MCSymbol *getStart() const { return Start; }
43 const MCSymbol *getEnd() const { return End; }
44 void setEnd(const MCSymbol *E) { End = E; }
46 private:
47 const MCSymbol *Start, *End;
48 };
50 class RangeSpanList {
51 private:
52 // Index for locating within the debug_range section this particular span.
53 MCSymbol *RangeSym;
54 // List of ranges.
55 SmallVector<RangeSpan, 2> Ranges;
57 public:
58 RangeSpanList(MCSymbol *Sym) : RangeSym(Sym) {}
59 MCSymbol *getSym() const { return RangeSym; }
60 const SmallVectorImpl<RangeSpan> &getRanges() const { return Ranges; }
61 void addRange(RangeSpan Range) { Ranges.push_back(Range); }
62 };
64 enum AbstractOrInlined { AOI_None, AOI_Inlined, AOI_Abstract };
66 //===----------------------------------------------------------------------===//
67 /// Unit - This dwarf writer support class manages information associated
68 /// with a source file.
69 class DwarfUnit {
70 protected:
71 /// UniqueID - a numeric ID unique among all CUs in the module
72 unsigned UniqueID;
74 /// Node - MDNode for the compile unit.
75 DICompileUnit CUNode;
77 /// Unit debug information entry.
78 DIE UnitDie;
80 /// Offset of the UnitDie from beginning of debug info section.
81 unsigned DebugInfoOffset;
83 /// Asm - Target of Dwarf emission.
84 AsmPrinter *Asm;
86 // Holders for some common dwarf information.
87 DwarfDebug *DD;
88 DwarfFile *DU;
90 /// IndexTyDie - An anonymous type for index type. Owned by UnitDie.
91 DIE *IndexTyDie;
93 /// MDNodeToDieMap - Tracks the mapping of unit level debug information
94 /// variables to debug information entries.
95 DenseMap<const MDNode *, DIE *> MDNodeToDieMap;
97 /// MDNodeToDIEEntryMap - Tracks the mapping of unit level debug information
98 /// descriptors to debug information entries using a DIEEntry proxy.
99 DenseMap<const MDNode *, DIEEntry *> MDNodeToDIEEntryMap;
101 /// GlobalNames - A map of globally visible named entities for this unit.
102 StringMap<const DIE *> GlobalNames;
104 /// GlobalTypes - A map of globally visible types for this unit.
105 StringMap<const DIE *> GlobalTypes;
107 /// DIEBlocks - A list of all the DIEBlocks in use.
108 std::vector<DIEBlock *> DIEBlocks;
110 /// DIELocs - A list of all the DIELocs in use.
111 std::vector<DIELoc *> DIELocs;
113 /// ContainingTypeMap - This map is used to keep track of subprogram DIEs that
114 /// need DW_AT_containing_type attribute. This attribute points to a DIE that
115 /// corresponds to the MDNode mapped with the subprogram DIE.
116 DenseMap<DIE *, const MDNode *> ContainingTypeMap;
118 // List of ranges for a given compile unit.
119 SmallVector<RangeSpan, 1> CURanges;
121 // List of range lists for a given compile unit, separate from the ranges for
122 // the CU itself.
123 SmallVector<RangeSpanList, 1> CURangeLists;
125 // DIEValueAllocator - All DIEValues are allocated through this allocator.
126 BumpPtrAllocator DIEValueAllocator;
128 // DIEIntegerOne - A preallocated DIEValue because 1 is used frequently.
129 DIEInteger *DIEIntegerOne;
131 /// The section this unit will be emitted in.
132 const MCSection *Section;
134 /// A label at the start of the non-dwo section related to this unit.
135 MCSymbol *SectionSym;
137 /// The start of the unit within its section.
138 MCSymbol *LabelBegin;
140 /// The end of the unit within its section.
141 MCSymbol *LabelEnd;
143 /// Skeleton unit associated with this unit.
144 DwarfUnit *Skeleton;
146 DwarfUnit(unsigned UID, dwarf::Tag, DICompileUnit CU, AsmPrinter *A,
147 DwarfDebug *DW, DwarfFile *DWU);
149 public:
150 virtual ~DwarfUnit();
152 /// Set the skeleton unit associated with this unit.
153 void setSkeleton(DwarfUnit &Skel) { Skeleton = &Skel; }
155 /// Get the skeleton unit associated with this unit.
156 DwarfUnit *getSkeleton() const { return Skeleton; }
158 /// Pass in the SectionSym even though we could recreate it in every compile
159 /// unit (type units will have actually distinct symbols once they're in
160 /// comdat sections).
161 void initSection(const MCSection *Section, MCSymbol *SectionSym) {
162 assert(!this->Section);
163 this->Section = Section;
164 this->SectionSym = SectionSym;
165 this->LabelBegin =
166 Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID());
167 this->LabelEnd =
168 Asm->GetTempSymbol(Section->getLabelEndName(), getUniqueID());
169 }
171 const MCSection *getSection() const {
172 assert(Section);
173 return Section;
174 }
176 /// If there's a skeleton then return the section symbol for the skeleton
177 /// unit, otherwise return the section symbol for this unit.
178 MCSymbol *getLocalSectionSym() const {
179 if (Skeleton)
180 return Skeleton->getSectionSym();
181 return getSectionSym();
182 }
184 MCSymbol *getSectionSym() const {
185 assert(Section);
186 return SectionSym;
187 }
189 /// If there's a skeleton then return the begin label for the skeleton unit,
190 /// otherwise return the local label for this unit.
191 MCSymbol *getLocalLabelBegin() const {
192 if (Skeleton)
193 return Skeleton->getLabelBegin();
194 return getLabelBegin();
195 }
197 MCSymbol *getLabelBegin() const {
198 assert(Section);
199 return LabelBegin;
200 }
202 MCSymbol *getLabelEnd() const {
203 assert(Section);
204 return LabelEnd;
205 }
207 // Accessors.
208 unsigned getUniqueID() const { return UniqueID; }
209 uint16_t getLanguage() const { return CUNode.getLanguage(); }
210 DICompileUnit getCUNode() const { return CUNode; }
211 DIE &getUnitDie() { return UnitDie; }
212 const StringMap<const DIE *> &getGlobalNames() const { return GlobalNames; }
213 const StringMap<const DIE *> &getGlobalTypes() const { return GlobalTypes; }
215 unsigned getDebugInfoOffset() const { return DebugInfoOffset; }
216 void setDebugInfoOffset(unsigned DbgInfoOff) { DebugInfoOffset = DbgInfoOff; }
218 /// hasContent - Return true if this compile unit has something to write out.
219 bool hasContent() const { return !UnitDie.getChildren().empty(); }
221 /// addRange - Add an address range to the list of ranges for this unit.
222 void addRange(RangeSpan Range);
224 /// getRanges - Get the list of ranges for this unit.
225 const SmallVectorImpl<RangeSpan> &getRanges() const { return CURanges; }
226 SmallVectorImpl<RangeSpan> &getRanges() { return CURanges; }
228 /// addRangeList - Add an address range list to the list of range lists.
229 void addRangeList(RangeSpanList Ranges) { CURangeLists.push_back(Ranges); }
231 /// getRangeLists - Get the vector of range lists.
232 const SmallVectorImpl<RangeSpanList> &getRangeLists() const {
233 return CURangeLists;
234 }
235 SmallVectorImpl<RangeSpanList> &getRangeLists() { return CURangeLists; }
237 /// getParentContextString - Get a string containing the language specific
238 /// context for a global name.
239 std::string getParentContextString(DIScope Context) const;
241 /// addGlobalName - Add a new global entity to the compile unit.
242 ///
243 void addGlobalName(StringRef Name, DIE &Die, DIScope Context);
245 /// addAccelNamespace - Add a new name to the namespace accelerator table.
246 void addAccelNamespace(StringRef Name, const DIE &Die);
248 /// getDIE - Returns the debug information entry map slot for the
249 /// specified debug variable. We delegate the request to DwarfDebug
250 /// when the MDNode can be part of the type system, since DIEs for
251 /// the type system can be shared across CUs and the mappings are
252 /// kept in DwarfDebug.
253 DIE *getDIE(DIDescriptor D) const;
255 /// getDIELoc - Returns a fresh newly allocated DIELoc.
256 DIELoc *getDIELoc() { return new (DIEValueAllocator) DIELoc(); }
258 /// insertDIE - Insert DIE into the map. We delegate the request to DwarfDebug
259 /// when the MDNode can be part of the type system, since DIEs for
260 /// the type system can be shared across CUs and the mappings are
261 /// kept in DwarfDebug.
262 void insertDIE(DIDescriptor Desc, DIE *D);
264 /// addFlag - Add a flag that is true to the DIE.
265 void addFlag(DIE &Die, dwarf::Attribute Attribute);
267 /// addUInt - Add an unsigned integer attribute data and value.
268 void addUInt(DIE &Die, dwarf::Attribute Attribute, Optional<dwarf::Form> Form,
269 uint64_t Integer);
271 void addUInt(DIE &Block, dwarf::Form Form, uint64_t Integer);
273 /// addSInt - Add an signed integer attribute data and value.
274 void addSInt(DIE &Die, dwarf::Attribute Attribute, Optional<dwarf::Form> Form,
275 int64_t Integer);
277 void addSInt(DIELoc &Die, Optional<dwarf::Form> Form, int64_t Integer);
279 /// addString - Add a string attribute data and value.
280 void addString(DIE &Die, dwarf::Attribute Attribute, const StringRef Str);
282 /// addLocalString - Add a string attribute data and value.
283 void addLocalString(DIE &Die, dwarf::Attribute Attribute,
284 const StringRef Str);
286 /// addExpr - Add a Dwarf expression attribute data and value.
287 void addExpr(DIELoc &Die, dwarf::Form Form, const MCExpr *Expr);
289 /// addLabel - Add a Dwarf label attribute data and value.
290 void addLabel(DIE &Die, dwarf::Attribute Attribute, dwarf::Form Form,
291 const MCSymbol *Label);
293 void addLabel(DIELoc &Die, dwarf::Form Form, const MCSymbol *Label);
295 /// addLocationList - Add a Dwarf loclistptr attribute data and value.
296 void addLocationList(DIE &Die, dwarf::Attribute Attribute, unsigned Index);
298 /// addSectionLabel - Add a Dwarf section label attribute data and value.
299 ///
300 void addSectionLabel(DIE &Die, dwarf::Attribute Attribute,
301 const MCSymbol *Label);
303 /// addSectionOffset - Add an offset into a section attribute data and value.
304 ///
305 void addSectionOffset(DIE &Die, dwarf::Attribute Attribute, uint64_t Integer);
307 /// addOpAddress - Add a dwarf op address data and value using the
308 /// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
309 void addOpAddress(DIELoc &Die, const MCSymbol *Label);
311 /// addSectionDelta - Add a label delta attribute data and value.
312 void addSectionDelta(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Hi,
313 const MCSymbol *Lo);
315 /// addLabelDelta - Add a label delta attribute data and value.
316 void addLabelDelta(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Hi,
317 const MCSymbol *Lo);
319 /// addDIEEntry - Add a DIE attribute data and value.
320 void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIE &Entry);
322 /// addDIEEntry - Add a DIE attribute data and value.
323 void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIEEntry *Entry);
325 void addDIETypeSignature(DIE &Die, const DwarfTypeUnit &Type);
327 /// addBlock - Add block data.
328 void addBlock(DIE &Die, dwarf::Attribute Attribute, DIELoc *Block);
330 /// addBlock - Add block data.
331 void addBlock(DIE &Die, dwarf::Attribute Attribute, DIEBlock *Block);
333 /// addSourceLine - Add location information to specified debug information
334 /// entry.
335 void addSourceLine(DIE &Die, unsigned Line, StringRef File,
336 StringRef Directory);
337 void addSourceLine(DIE &Die, DIVariable V);
338 void addSourceLine(DIE &Die, DIGlobalVariable G);
339 void addSourceLine(DIE &Die, DISubprogram SP);
340 void addSourceLine(DIE &Die, DIType Ty);
341 void addSourceLine(DIE &Die, DINameSpace NS);
342 void addSourceLine(DIE &Die, DIObjCProperty Ty);
344 /// addAddress - Add an address attribute to a die based on the location
345 /// provided.
346 void addAddress(DIE &Die, dwarf::Attribute Attribute,
347 const MachineLocation &Location, bool Indirect = false);
349 /// addConstantValue - Add constant value entry in variable DIE.
350 void addConstantValue(DIE &Die, const MachineOperand &MO, DIType Ty);
351 void addConstantValue(DIE &Die, const ConstantInt *CI, DIType Ty);
352 void addConstantValue(DIE &Die, const APInt &Val, DIType Ty);
353 void addConstantValue(DIE &Die, const APInt &Val, bool Unsigned);
354 void addConstantValue(DIE &Die, bool Unsigned, uint64_t Val);
356 /// addConstantFPValue - Add constant value entry in variable DIE.
357 void addConstantFPValue(DIE &Die, const MachineOperand &MO);
358 void addConstantFPValue(DIE &Die, const ConstantFP *CFP);
360 /// addTemplateParams - Add template parameters in buffer.
361 void addTemplateParams(DIE &Buffer, DIArray TParams);
363 /// addRegisterOp - Add register operand.
364 void addRegisterOp(DIELoc &TheDie, unsigned Reg);
366 /// addRegisterOffset - Add register offset.
367 void addRegisterOffset(DIELoc &TheDie, unsigned Reg, int64_t Offset);
369 /// addComplexAddress - Start with the address based on the location provided,
370 /// and generate the DWARF information necessary to find the actual variable
371 /// (navigating the extra location information encoded in the type) based on
372 /// the starting location. Add the DWARF information to the die.
373 void addComplexAddress(const DbgVariable &DV, DIE &Die,
374 dwarf::Attribute Attribute,
375 const MachineLocation &Location);
377 // FIXME: Should be reformulated in terms of addComplexAddress.
378 /// addBlockByrefAddress - Start with the address based on the location
379 /// provided, and generate the DWARF information necessary to find the
380 /// actual Block variable (navigating the Block struct) based on the
381 /// starting location. Add the DWARF information to the die. Obsolete,
382 /// please use addComplexAddress instead.
383 void addBlockByrefAddress(const DbgVariable &DV, DIE &Die,
384 dwarf::Attribute Attribute,
385 const MachineLocation &Location);
387 /// addVariableAddress - Add DW_AT_location attribute for a
388 /// DbgVariable based on provided MachineLocation.
389 void addVariableAddress(const DbgVariable &DV, DIE &Die,
390 MachineLocation Location);
392 /// addType - Add a new type attribute to the specified entity. This takes
393 /// and attribute parameter because DW_AT_friend attributes are also
394 /// type references.
395 void addType(DIE &Entity, DIType Ty,
396 dwarf::Attribute Attribute = dwarf::DW_AT_type);
398 /// getOrCreateNameSpace - Create a DIE for DINameSpace.
399 DIE *getOrCreateNameSpace(DINameSpace NS);
401 /// getOrCreateSubprogramDIE - Create new DIE using SP.
402 DIE *getOrCreateSubprogramDIE(DISubprogram SP);
404 void applySubprogramAttributes(DISubprogram SP, DIE &SPDie);
406 /// getOrCreateTypeDIE - Find existing DIE or create new DIE for the
407 /// given DIType.
408 DIE *getOrCreateTypeDIE(const MDNode *N);
410 /// getOrCreateContextDIE - Get context owner's DIE.
411 DIE *createTypeDIE(DICompositeType Ty);
413 /// getOrCreateContextDIE - Get context owner's DIE.
414 DIE *getOrCreateContextDIE(DIScope Context);
416 /// constructContainingTypeDIEs - Construct DIEs for types that contain
417 /// vtables.
418 void constructContainingTypeDIEs();
420 /// constructVariableDIE - Construct a DIE for the given DbgVariable.
421 std::unique_ptr<DIE> constructVariableDIE(DbgVariable &DV,
422 AbstractOrInlined AbsIn = AOI_None);
424 /// constructSubprogramArguments - Construct function argument DIEs.
425 void constructSubprogramArguments(DIE &Buffer, DIArray Args);
427 /// Create a DIE with the given Tag, add the DIE to its parent, and
428 /// call insertDIE if MD is not null.
429 DIE &createAndAddDIE(unsigned Tag, DIE &Parent,
430 DIDescriptor N = DIDescriptor());
432 /// Compute the size of a header for this unit, not including the initial
433 /// length field.
434 virtual unsigned getHeaderSize() const {
435 return sizeof(int16_t) + // DWARF version number
436 sizeof(int32_t) + // Offset Into Abbrev. Section
437 sizeof(int8_t); // Pointer Size (in bytes)
438 }
440 /// Emit the header for this unit, not including the initial length field.
441 virtual void emitHeader(const MCSymbol *ASectionSym) const;
443 virtual DwarfCompileUnit &getCU() = 0;
445 /// constructTypeDIE - Construct type DIE from DICompositeType.
446 void constructTypeDIE(DIE &Buffer, DICompositeType CTy);
448 protected:
449 /// getOrCreateStaticMemberDIE - Create new static data member DIE.
450 DIE *getOrCreateStaticMemberDIE(DIDerivedType DT);
452 /// Look up the source ID with the given directory and source file names. If
453 /// none currently exists, create a new ID and insert it in the line table.
454 virtual unsigned getOrCreateSourceID(StringRef File, StringRef Directory) = 0;
456 private:
457 /// \brief Construct a DIE for the given DbgVariable without initializing the
458 /// DbgVariable's DIE reference.
459 std::unique_ptr<DIE> constructVariableDIEImpl(const DbgVariable &DV,
460 AbstractOrInlined AbsIn);
462 /// constructTypeDIE - Construct basic type die from DIBasicType.
463 void constructTypeDIE(DIE &Buffer, DIBasicType BTy);
465 /// constructTypeDIE - Construct derived type die from DIDerivedType.
466 void constructTypeDIE(DIE &Buffer, DIDerivedType DTy);
468 /// constructSubrangeDIE - Construct subrange DIE from DISubrange.
469 void constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy);
471 /// constructArrayTypeDIE - Construct array type DIE from DICompositeType.
472 void constructArrayTypeDIE(DIE &Buffer, DICompositeType CTy);
474 /// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator.
475 void constructEnumTypeDIE(DIE &Buffer, DICompositeType CTy);
477 /// constructMemberDIE - Construct member DIE from DIDerivedType.
478 void constructMemberDIE(DIE &Buffer, DIDerivedType DT);
480 /// constructTemplateTypeParameterDIE - Construct new DIE for the given
481 /// DITemplateTypeParameter.
482 void constructTemplateTypeParameterDIE(DIE &Buffer,
483 DITemplateTypeParameter TP);
485 /// constructTemplateValueParameterDIE - Construct new DIE for the given
486 /// DITemplateValueParameter.
487 void constructTemplateValueParameterDIE(DIE &Buffer,
488 DITemplateValueParameter TVP);
490 /// getLowerBoundDefault - Return the default lower bound for an array. If the
491 /// DWARF version doesn't handle the language, return -1.
492 int64_t getDefaultLowerBound() const;
494 /// getDIEEntry - Returns the debug information entry for the specified
495 /// debug variable.
496 DIEEntry *getDIEEntry(const MDNode *N) const {
497 return MDNodeToDIEEntryMap.lookup(N);
498 }
500 /// insertDIEEntry - Insert debug information entry into the map.
501 void insertDIEEntry(const MDNode *N, DIEEntry *E) {
502 MDNodeToDIEEntryMap.insert(std::make_pair(N, E));
503 }
505 // getIndexTyDie - Get an anonymous type for index type.
506 DIE *getIndexTyDie() { return IndexTyDie; }
508 // setIndexTyDie - Set D as anonymous type for index which can be reused
509 // later.
510 void setIndexTyDie(DIE *D) { IndexTyDie = D; }
512 /// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug
513 /// information entry.
514 DIEEntry *createDIEEntry(DIE &Entry);
516 /// resolve - Look in the DwarfDebug map for the MDNode that
517 /// corresponds to the reference.
518 template <typename T> T resolve(DIRef<T> Ref) const {
519 return DD->resolve(Ref);
520 }
522 /// If this is a named finished type then include it in the list of types for
523 /// the accelerator tables.
524 void updateAcceleratorTables(DIScope Context, DIType Ty, const DIE &TyDIE);
525 };
527 class DwarfCompileUnit : public DwarfUnit {
528 /// The attribute index of DW_AT_stmt_list in the compile unit DIE, avoiding
529 /// the need to search for it in applyStmtList.
530 unsigned stmtListIndex;
532 public:
533 DwarfCompileUnit(unsigned UID, DICompileUnit Node, AsmPrinter *A,
534 DwarfDebug *DW, DwarfFile *DWU);
536 void initStmtList(MCSymbol *DwarfLineSectionSym);
538 /// Apply the DW_AT_stmt_list from this compile unit to the specified DIE.
539 void applyStmtList(DIE &D);
541 /// createGlobalVariableDIE - create global variable DIE.
542 void createGlobalVariableDIE(DIGlobalVariable GV);
544 /// addLabelAddress - Add a dwarf label attribute data and value using
545 /// either DW_FORM_addr or DW_FORM_GNU_addr_index.
546 void addLabelAddress(DIE &Die, dwarf::Attribute Attribute,
547 const MCSymbol *Label);
549 /// addLocalLabelAddress - Add a dwarf label attribute data and value using
550 /// DW_FORM_addr only.
551 void addLocalLabelAddress(DIE &Die, dwarf::Attribute Attribute,
552 const MCSymbol *Label);
554 DwarfCompileUnit &getCU() override { return *this; }
556 unsigned getOrCreateSourceID(StringRef FileName, StringRef DirName) override;
557 };
559 class DwarfTypeUnit : public DwarfUnit {
560 private:
561 uint64_t TypeSignature;
562 const DIE *Ty;
563 DwarfCompileUnit &CU;
564 MCDwarfDwoLineTable *SplitLineTable;
566 public:
567 DwarfTypeUnit(unsigned UID, DwarfCompileUnit &CU, AsmPrinter *A,
568 DwarfDebug *DW, DwarfFile *DWU,
569 MCDwarfDwoLineTable *SplitLineTable = nullptr);
571 void setTypeSignature(uint64_t Signature) { TypeSignature = Signature; }
572 uint64_t getTypeSignature() const { return TypeSignature; }
573 void setType(const DIE *Ty) { this->Ty = Ty; }
575 /// Emit the header for this unit, not including the initial length field.
576 void emitHeader(const MCSymbol *ASectionSym) const override;
577 unsigned getHeaderSize() const override {
578 return DwarfUnit::getHeaderSize() + sizeof(uint64_t) + // Type Signature
579 sizeof(uint32_t); // Type DIE Offset
580 }
581 void initSection(const MCSection *Section);
582 DwarfCompileUnit &getCU() override { return CU; }
584 protected:
585 unsigned getOrCreateSourceID(StringRef File, StringRef Directory) override;
586 };
587 } // end llvm namespace
588 #endif