LLVM  8.0.0svn
DwarfUnit.h
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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 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFUNIT_H
15 #define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFUNIT_H
16 
17 #include "DwarfDebug.h"
18 #include "llvm/ADT/DenseMap.h"
19 #include "llvm/ADT/Optional.h"
20 #include "llvm/ADT/StringMap.h"
22 #include "llvm/CodeGen/DIE.h"
23 #include "llvm/IR/DIBuilder.h"
24 #include "llvm/IR/DebugInfo.h"
25 #include "llvm/MC/MCDwarf.h"
26 #include "llvm/MC/MCExpr.h"
27 #include "llvm/MC/MCSection.h"
28 
29 namespace llvm {
30 
31 class MachineLocation;
32 class MachineOperand;
33 class ConstantInt;
34 class ConstantFP;
35 class DbgVariable;
36 class DwarfCompileUnit;
37 
38 //===----------------------------------------------------------------------===//
39 /// This dwarf writer support class manages information associated with a
40 /// source file.
41 class DwarfUnit : public DIEUnit {
42 protected:
43  /// MDNode for the compile unit.
45 
46  // All DIEValues are allocated through this allocator.
48 
49  /// Target of Dwarf emission.
51 
52  // Holders for some common dwarf information.
55 
56  /// An anonymous type for index type. Owned by DIEUnit.
58 
59  /// Tracks the mapping of unit level debug information variables to debug
60  /// information entries.
62 
63  /// A list of all the DIEBlocks in use.
64  std::vector<DIEBlock *> DIEBlocks;
65 
66  /// A list of all the DIELocs in use.
67  std::vector<DIELoc *> DIELocs;
68 
69  /// This map is used to keep track of subprogram DIEs that need
70  /// DW_AT_containing_type attribute. This attribute points to a DIE that
71  /// corresponds to the MDNode mapped with the subprogram DIE.
73 
75  DwarfFile *DWU);
76 
78 
79  bool shareAcrossDWOCUs() const;
80  bool isShareableAcrossCUs(const DINode *D) const;
81 
82 public:
83  // Accessors.
84  AsmPrinter* getAsmPrinter() const { return Asm; }
85  uint16_t getLanguage() const { return CUNode->getSourceLanguage(); }
86  const DICompileUnit *getCUNode() const { return CUNode; }
87 
88  uint16_t getDwarfVersion() const { return DD->getDwarfVersion(); }
89 
90  /// Return true if this compile unit has something to write out.
91  bool hasContent() const { return getUnitDie().hasChildren(); }
92 
93  /// Get string containing language specific context for a global name.
94  ///
95  /// Walks the metadata parent chain in a language specific manner (using the
96  /// compile unit language) and returns it as a string. This is done at the
97  /// metadata level because DIEs may not currently have been added to the
98  /// parent context and walking the DIEs looking for names is more expensive
99  /// than walking the metadata.
100  std::string getParentContextString(const DIScope *Context) const;
101 
102  /// Add a new global name to the compile unit.
103  virtual void addGlobalName(StringRef Name, const DIE &Die,
104  const DIScope *Context) = 0;
105 
106  /// Add a new global type to the compile unit.
107  virtual void addGlobalType(const DIType *Ty, const DIE &Die,
108  const DIScope *Context) = 0;
109 
110  /// Returns the DIE map slot for the specified debug variable.
111  ///
112  /// We delegate the request to DwarfDebug when the MDNode can be part of the
113  /// type system, since DIEs for the type system can be shared across CUs and
114  /// the mappings are kept in DwarfDebug.
115  DIE *getDIE(const DINode *D) const;
116 
117  /// Returns a fresh newly allocated DIELoc.
119 
120  /// Insert DIE into the map.
121  ///
122  /// We delegate the request to DwarfDebug when the MDNode can be part of the
123  /// type system, since DIEs for the type system can be shared across CUs and
124  /// the mappings are kept in DwarfDebug.
125  void insertDIE(const DINode *Desc, DIE *D);
126 
127  /// Add a flag that is true to the DIE.
129 
130  /// Add an unsigned integer attribute data and value.
131  void addUInt(DIEValueList &Die, dwarf::Attribute Attribute,
133 
134  void addUInt(DIEValueList &Block, dwarf::Form Form, uint64_t Integer);
135 
136  /// Add an signed integer attribute data and value.
137  void addSInt(DIEValueList &Die, dwarf::Attribute Attribute,
138  Optional<dwarf::Form> Form, int64_t Integer);
139 
140  void addSInt(DIELoc &Die, Optional<dwarf::Form> Form, int64_t Integer);
141 
142  /// Add a string attribute data and value.
143  ///
144  /// We always emit a reference to the string pool instead of immediate
145  /// strings so that DIEs have more predictable sizes. In the case of split
146  /// dwarf we emit an index into another table which gets us the static offset
147  /// into the string table.
148  void addString(DIE &Die, dwarf::Attribute Attribute, StringRef Str);
149 
150  /// Add a Dwarf label attribute data and value.
152  dwarf::Attribute Attribute,
153  dwarf::Form Form,
154  const MCSymbol *Label);
155 
156  void addLabel(DIELoc &Die, dwarf::Form Form, const MCSymbol *Label);
157 
158  /// Add an offset into a section attribute data and value.
159  void addSectionOffset(DIE &Die, dwarf::Attribute Attribute, uint64_t Integer);
160 
161  /// Add a dwarf op address data and value using the form given and an
162  /// op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
163  void addOpAddress(DIELoc &Die, const MCSymbol *Sym);
164 
165  /// Add a label delta attribute data and value.
166  void addLabelDelta(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Hi,
167  const MCSymbol *Lo);
168 
169  /// Add a DIE attribute data and value.
170  void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIE &Entry);
171 
172  /// Add a DIE attribute data and value.
173  void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIEEntry Entry);
174 
175  /// Add a type's DW_AT_signature and set the declaration flag.
176  void addDIETypeSignature(DIE &Die, uint64_t Signature);
177 
178  /// Add block data.
179  void addBlock(DIE &Die, dwarf::Attribute Attribute, DIELoc *Loc);
180 
181  /// Add block data.
182  void addBlock(DIE &Die, dwarf::Attribute Attribute, DIEBlock *Block);
183 
184  /// Add location information to specified debug information entry.
185  void addSourceLine(DIE &Die, unsigned Line, const DIFile *File);
186  void addSourceLine(DIE &Die, const DILocalVariable *V);
187  void addSourceLine(DIE &Die, const DIGlobalVariable *G);
188  void addSourceLine(DIE &Die, const DISubprogram *SP);
189  void addSourceLine(DIE &Die, const DILabel *L);
190  void addSourceLine(DIE &Die, const DIType *Ty);
191  void addSourceLine(DIE &Die, const DIObjCProperty *Ty);
192 
193  /// Add constant value entry in variable DIE.
194  void addConstantValue(DIE &Die, const MachineOperand &MO, const DIType *Ty);
195  void addConstantValue(DIE &Die, const ConstantInt *CI, const DIType *Ty);
196  void addConstantValue(DIE &Die, const APInt &Val, const DIType *Ty);
197  void addConstantValue(DIE &Die, const APInt &Val, bool Unsigned);
198  void addConstantValue(DIE &Die, bool Unsigned, uint64_t Val);
199 
200  /// Add constant value entry in variable DIE.
201  void addConstantFPValue(DIE &Die, const MachineOperand &MO);
202  void addConstantFPValue(DIE &Die, const ConstantFP *CFP);
203 
204  /// Add a linkage name, if it isn't empty.
206 
207  /// Add template parameters in buffer.
208  void addTemplateParams(DIE &Buffer, DINodeArray TParams);
209 
210  /// Add thrown types.
211  void addThrownTypes(DIE &Die, DINodeArray ThrownTypes);
212 
213  // FIXME: Should be reformulated in terms of addComplexAddress.
214  /// Start with the address based on the location provided, and generate the
215  /// DWARF information necessary to find the actual Block variable (navigating
216  /// the Block struct) based on the starting location. Add the DWARF
217  /// information to the die. Obsolete, please use addComplexAddress instead.
218  void addBlockByrefAddress(const DbgVariable &DV, DIE &Die,
219  dwarf::Attribute Attribute,
220  const MachineLocation &Location);
221 
222  /// Add a new type attribute to the specified entity.
223  ///
224  /// This takes and attribute parameter because DW_AT_friend attributes are
225  /// also type references.
226  void addType(DIE &Entity, const DIType *Ty,
227  dwarf::Attribute Attribute = dwarf::DW_AT_type);
228 
230  DIE *getOrCreateModule(const DIModule *M);
231  DIE *getOrCreateSubprogramDIE(const DISubprogram *SP, bool Minimal = false);
232 
233  void applySubprogramAttributes(const DISubprogram *SP, DIE &SPDie,
234  bool SkipSPAttributes = false);
235 
236  /// Find existing DIE or create new DIE for the given type.
237  DIE *getOrCreateTypeDIE(const MDNode *TyNode);
238 
239  /// Get context owner's DIE.
240  DIE *getOrCreateContextDIE(const DIScope *Context);
241 
242  /// Construct DIEs for types that contain vtables.
244 
245  /// Construct function argument DIEs.
247 
248  /// Create a DIE with the given Tag, add the DIE to its parent, and
249  /// call insertDIE if MD is not null.
250  DIE &createAndAddDIE(unsigned Tag, DIE &Parent, const DINode *N = nullptr);
251 
253  return DD->useSegmentedStringOffsetsTable();
254  }
255 
256  /// Compute the size of a header for this unit, not including the initial
257  /// length field.
258  virtual unsigned getHeaderSize() const {
259  return sizeof(int16_t) + // DWARF version number
260  sizeof(int32_t) + // Offset Into Abbrev. Section
261  sizeof(int8_t) + // Pointer Size (in bytes)
262  (DD->getDwarfVersion() >= 5 ? sizeof(int8_t)
263  : 0); // DWARF v5 unit type
264  }
265 
266  /// Emit the header for this unit, not including the initial length field.
267  virtual void emitHeader(bool UseOffsets) = 0;
268 
269  /// Add the DW_AT_str_offsets_base attribute to the unit DIE.
270  void addStringOffsetsStart();
271 
272  /// Add the DW_AT_rnglists_base attribute to the unit DIE.
273  void addRnglistsBase();
274 
275  /// Add the DW_AT_loclists_base attribute to the unit DIE.
276  void addLoclistsBase();
277 
278  /// Add the DW_AT_addr_base attribute to the unit DIE.
279  void addAddrTableBase();
280 
281  virtual DwarfCompileUnit &getCU() = 0;
282 
283  void constructTypeDIE(DIE &Buffer, const DICompositeType *CTy);
284 
285  /// addSectionDelta - Add a label delta attribute data and value.
287  const MCSymbol *Hi, const MCSymbol *Lo);
288 
289  /// Add a Dwarf section label attribute data and value.
291  const MCSymbol *Label,
292  const MCSymbol *Sec);
293 
294  /// If the \p File has an MD5 checksum, return it as an MD5Result
295  /// allocated in the MCContext.
296  MD5::MD5Result *getMD5AsBytes(const DIFile *File) const;
297 
298 protected:
299  ~DwarfUnit();
300 
301  /// Create new static data member DIE.
303 
304  /// Look up the source ID for the given file. If none currently exists,
305  /// create a new ID and insert it in the line table.
306  virtual unsigned getOrCreateSourceID(const DIFile *File) = 0;
307 
308  /// Look in the DwarfDebug map for the MDNode that corresponds to the
309  /// reference.
310  template <typename T> T *resolve(TypedDINodeRef<T> Ref) const {
311  return Ref.resolve();
312  }
313 
314  /// If this is a named finished type then include it in the list of types for
315  /// the accelerator tables.
316  void updateAcceleratorTables(const DIScope *Context, const DIType *Ty,
317  const DIE &TyDIE);
318 
319  /// Emit the common part of the header for this unit.
320  void emitCommonHeader(bool UseOffsets, dwarf::UnitType UT);
321 
322 private:
323  void constructTypeDIE(DIE &Buffer, const DIBasicType *BTy);
324  void constructTypeDIE(DIE &Buffer, const DIDerivedType *DTy);
325  void constructTypeDIE(DIE &Buffer, const DISubroutineType *CTy);
326  void constructSubrangeDIE(DIE &Buffer, const DISubrange *SR, DIE *IndexTy);
327  void constructArrayTypeDIE(DIE &Buffer, const DICompositeType *CTy);
328  void constructEnumTypeDIE(DIE &Buffer, const DICompositeType *CTy);
329  DIE &constructMemberDIE(DIE &Buffer, const DIDerivedType *DT);
330  void constructTemplateTypeParameterDIE(DIE &Buffer,
331  const DITemplateTypeParameter *TP);
332  void constructTemplateValueParameterDIE(DIE &Buffer,
333  const DITemplateValueParameter *TVP);
334 
335  /// Return the default lower bound for an array.
336  ///
337  /// If the DWARF version doesn't handle the language, return -1.
338  int64_t getDefaultLowerBound() const;
339 
340  /// Get an anonymous type for index type.
341  DIE *getIndexTyDie();
342 
343  /// Set D as anonymous type for index which can be reused later.
344  void setIndexTyDie(DIE *D) { IndexTyDie = D; }
345 
346  virtual bool isDwoUnit() const = 0;
347  const MCSymbol *getCrossSectionRelativeBaseAddress() const override;
348 };
349 
350 class DwarfTypeUnit final : public DwarfUnit {
351  uint64_t TypeSignature;
352  const DIE *Ty;
354  MCDwarfDwoLineTable *SplitLineTable;
355  bool UsedLineTable = false;
356 
357  unsigned getOrCreateSourceID(const DIFile *File) override;
358  bool isDwoUnit() const override;
359 
360 public:
362  DwarfFile *DWU, MCDwarfDwoLineTable *SplitLineTable = nullptr);
363 
364  void setTypeSignature(uint64_t Signature) { TypeSignature = Signature; }
365  void setType(const DIE *Ty) { this->Ty = Ty; }
366 
367  /// Get context owner's DIE.
368  DIE *createTypeDIE(const DICompositeType *Ty);
369 
370  /// Emit the header for this unit, not including the initial length field.
371  void emitHeader(bool UseOffsets) override;
372  unsigned getHeaderSize() const override {
373  return DwarfUnit::getHeaderSize() + sizeof(uint64_t) + // Type Signature
374  sizeof(uint32_t); // Type DIE Offset
375  }
376  void addGlobalName(StringRef Name, const DIE &Die,
377  const DIScope *Context) override;
378  void addGlobalType(const DIType *Ty, const DIE &Die,
379  const DIScope *Context) override;
380  DwarfCompileUnit &getCU() override { return CU; }
381 };
382 } // end llvm namespace
383 #endif
const DICompileUnit * getCUNode() const
Definition: DwarfUnit.h:86
void updateAcceleratorTables(const DIScope *Context, const DIType *Ty, const DIE &TyDIE)
If this is a named finished type then include it in the list of types for the accelerator tables...
Definition: DwarfUnit.cpp:669
DIE::value_iterator addSectionDelta(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Hi, const MCSymbol *Lo)
addSectionDelta - Add a label delta attribute data and value.
Definition: DwarfUnit.cpp:1600
void addFlag(DIE &Die, dwarf::Attribute Attribute)
Add a flag that is true to the DIE.
Definition: DwarfUnit.cpp:200
LLVMContext & Context
virtual unsigned getHeaderSize() const
Compute the size of a header for this unit, not including the initial length field.
Definition: DwarfUnit.h:258
void addLabelDelta(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Hi, const MCSymbol *Lo)
Add a label delta attribute data and value.
Definition: DwarfUnit.cpp:335
std::vector< DIELoc * > DIELocs
A list of all the DIELocs in use.
Definition: DwarfUnit.h:67
DIELoc - Represents an expression location.
Definition: DIE.h:846
This class represents lattice values for constants.
Definition: AllocatorList.h:24
DIE * getOrCreateStaticMemberDIE(const DIDerivedType *DT)
Create new static data member DIE.
Definition: DwarfUnit.cpp:1506
void addOpAddress(DIELoc &Die, const MCSymbol *Sym)
Add a dwarf op address data and value using the form given and an op of either DW_FORM_addr or DW_FOR...
Definition: DwarfUnit.cpp:317
MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...
Definition: MCSymbol.h:42
Attribute
Attributes.
Definition: Dwarf.h:114
void addThrownTypes(DIE &Die, DINodeArray ThrownTypes)
Add thrown types.
Definition: DwarfUnit.cpp:585
void insertDIE(const DINode *Desc, DIE *D)
Insert DIE into the map.
Definition: DwarfUnit.cpp:192
Collects and handles dwarf debug information.
Definition: DwarfDebug.h:281
bool hasChildren() const
Definition: DIE.h:702
MD5::MD5Result * getMD5AsBytes(const DIFile *File) const
If the File has an MD5 checksum, return it as an MD5Result allocated in the MCContext.
Definition: DwarfUnit.cpp:288
bool shareAcrossDWOCUs() const
void addAddrTableBase()
Add the DW_AT_addr_base attribute to the unit DIE.
Definition: DwarfUnit.cpp:1668
void addLoclistsBase()
Add the DW_AT_loclists_base attribute to the unit DIE.
Definition: DwarfUnit.cpp:1659
Metadata node.
Definition: Metadata.h:864
bool useSegmentedStringOffsetsTable() const
Definition: DwarfUnit.h:252
void addType(DIE &Entity, const DIType *Ty, dwarf::Attribute Attribute=dwarf::DW_AT_type)
Add a new type attribute to the specified entity.
Definition: DwarfUnit.cpp:687
DIE::value_iterator addSectionLabel(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Label, const MCSymbol *Sec)
Add a Dwarf section label attribute data and value.
Definition: DwarfUnit.cpp:1609
virtual DwarfCompileUnit & getCU()=0
AsmPrinter * Asm
Target of Dwarf emission.
Definition: DwarfUnit.h:50
Tagged DWARF-like metadata node.
void constructTypeDIE(DIE &Buffer, const DICompositeType *CTy)
Definition: DwarfUnit.cpp:836
DIE * getDIE(const DINode *D) const
Returns the DIE map slot for the specified debug variable.
Definition: DwarfUnit.cpp:186
T * resolve(TypedDINodeRef< T > Ref) const
Look in the DwarfDebug map for the MDNode that corresponds to the reference.
Definition: DwarfUnit.h:310
amdgpu Simplify well known AMD library false Value Value const Twine & Name
Array subrange.
bool isShareableAcrossCUs(const DINode *D) const
Check whether the DIE for this MDNode can be shared across CUs.
Definition: DwarfUnit.cpp:171
void addConstantFPValue(DIE &Die, const MachineOperand &MO)
Add constant value entry in variable DIE.
Definition: DwarfUnit.cpp:487
The access may reference the value stored in memory.
void constructContainingTypeDIEs()
Construct DIEs for types that contain vtables.
Definition: DwarfUnit.cpp:1383
virtual void emitHeader(bool UseOffsets)=0
Emit the header for this unit, not including the initial length field.
Holds a subclass of DINode.
void addBlockByrefAddress(const DbgVariable &DV, DIE &Die, dwarf::Attribute Attribute, const MachineLocation &Location)
Start with the address based on the location provided, and generate the DWARF information necessary t...
DIE * getOrCreateTypeDIE(const MDNode *TyNode)
Find existing DIE or create new DIE for the given type.
Definition: DwarfUnit.cpp:622
void addBlock(DIE &Die, dwarf::Attribute Attribute, DIELoc *Loc)
Add block data.
Definition: DwarfUnit.cpp:377
DenseMap< DIE *, const DINode * > ContainingTypeMap
This map is used to keep track of subprogram DIEs that need DW_AT_containing_type attribute...
Definition: DwarfUnit.h:72
void addString(DIE &Die, dwarf::Attribute Attribute, StringRef Str)
Add a string attribute data and value.
Definition: DwarfUnit.cpp:235
Subprogram description.
AsmPrinter * getAsmPrinter() const
Definition: DwarfUnit.h:84
This class is used to track local variable information.
Definition: DwarfDebug.h:117
A list of DIE values.
Definition: DIE.h:589
DwarfCompileUnit & getCU() override
Definition: DwarfUnit.h:380
DIE * getOrCreateNameSpace(const DINamespace *NS)
Definition: DwarfUnit.cpp:1038
void addConstantValue(DIE &Die, const MachineOperand &MO, const DIType *Ty)
Add constant value entry in variable DIE.
Definition: DwarfUnit.cpp:519
void applySubprogramAttributes(const DISubprogram *SP, DIE &SPDie, bool SkipSPAttributes=false)
Definition: DwarfUnit.cpp:1157
void addSourceLine(DIE &Die, unsigned Line, const DIFile *File)
Add location information to specified debug information entry.
Definition: DwarfUnit.cpp:391
A pointer to another debug information entry.
Definition: DIE.h:294
This dwarf writer support class manages information associated with a source file.
Definition: DwarfUnit.h:41
DIEValueList::value_iterator addLabel(DIEValueList &Die, dwarf::Attribute Attribute, dwarf::Form Form, const MCSymbol *Label)
Add a Dwarf label attribute data and value.
Definition: DwarfUnit.cpp:269
bool applySubprogramDefinitionAttributes(const DISubprogram *SP, DIE &SPDie)
Definition: DwarfUnit.cpp:1114
Allocate memory in an ever growing pool, as if by bump-pointer.
Definition: Allocator.h:141
bool hasContent() const
Return true if this compile unit has something to write out.
Definition: DwarfUnit.h:91
A structured debug information entry.
Definition: DIE.h:662
DIELoc * getDIELoc()
Returns a fresh newly allocated DIELoc.
Definition: DwarfUnit.h:118
ConstantFP - Floating Point Values [float, double].
Definition: Constants.h:264
DIE & getUnitDie()
Definition: DIE.h:834
This class is intended to be used as a driving class for all asm writers.
Definition: AsmPrinter.h:79
DenseMap< const MDNode *, DIE * > MDNodeToDieMap
Tracks the mapping of unit level debug information variables to debug information entries...
Definition: DwarfUnit.h:61
virtual unsigned getOrCreateSourceID(const DIFile *File)=0
Look up the source ID for the given file.
void emitCommonHeader(bool UseOffsets, dwarf::UnitType UT)
Emit the common part of the header for this unit.
Definition: DwarfUnit.cpp:1553
DIE * getOrCreateSubprogramDIE(const DISubprogram *SP, bool Minimal=false)
Definition: DwarfUnit.cpp:1083
bool useSegmentedStringOffsetsTable() const
Returns whether to generate a string offsets table with (possibly shared) contributions from each CU ...
Definition: DwarfDebug.h:662
void addSInt(DIEValueList &Die, dwarf::Attribute Attribute, Optional< dwarf::Form > Form, int64_t Integer)
Add an signed integer attribute data and value.
Definition: DwarfUnit.cpp:223
DIE * IndexTyDie
An anonymous type for index type. Owned by DIEUnit.
Definition: DwarfUnit.h:57
Base class for scope-like contexts.
std::string getParentContextString(const DIScope *Context) const
Get string containing language specific context for a global name.
Definition: DwarfUnit.cpp:693
UnitType
Constants for unit types in DWARF v5.
Definition: Dwarf.h:327
uint16_t getLanguage() const
Definition: DwarfUnit.h:85
unsigned getHeaderSize() const override
Compute the size of a header for this unit, not including the initial length field.
Definition: DwarfUnit.h:372
Base class for types.
This is the shared class of boolean and integer constants.
Definition: Constants.h:84
MachineOperand class - Representation of each machine instruction operand.
const DataFlowGraph & G
Definition: RDFGraph.cpp:211
void addLinkageName(DIE &Die, StringRef LinkageName)
Add a linkage name, if it isn&#39;t empty.
Definition: DwarfUnit.cpp:566
Represents a compile or type unit.
Definition: DIE.h:788
static GCRegistry::Add< StatepointGC > D("statepoint-example", "an example strategy for statepoint")
void setTypeSignature(uint64_t Signature)
Definition: DwarfUnit.h:364
void addRnglistsBase()
Add the DW_AT_rnglists_base attribute to the unit DIE.
Definition: DwarfUnit.cpp:1650
void addTemplateParams(DIE &Buffer, DINodeArray TParams)
Add template parameters in buffer.
Definition: DwarfUnit.cpp:574
unsigned getSourceLanguage() const
DwarfDebug * DD
Definition: DwarfUnit.h:53
Class for arbitrary precision integers.
Definition: APInt.h:70
A (clang) module that has been imported by the compile unit.
void setType(const DIE *Ty)
Definition: DwarfUnit.h:365
void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIE &Entry)
Add a DIE attribute data and value.
Definition: DwarfUnit.cpp:341
virtual void addGlobalType(const DIType *Ty, const DIE &Die, const DIScope *Context)=0
Add a new global type to the compile unit.
DIE * getOrCreateContextDIE(const DIScope *Context)
Get context owner&#39;s DIE.
Definition: DwarfUnit.cpp:592
Type array for a subprogram.
virtual void addGlobalName(StringRef Name, const DIE &Die, const DIScope *Context)=0
Add a new global name to the compile unit.
DIE & createAndAddDIE(unsigned Tag, DIE &Parent, const DINode *N=nullptr)
Create a DIE with the given Tag, add the DIE to its parent, and call insertDIE if MD is not null...
Definition: DwarfUnit.cpp:370
#define N
DIE * getOrCreateModule(const DIModule *M)
Definition: DwarfUnit.cpp:1059
const DICompileUnit * CUNode
MDNode for the compile unit.
Definition: DwarfUnit.h:44
void addSectionOffset(DIE &Die, dwarf::Attribute Attribute, uint64_t Integer)
Add an offset into a section attribute data and value.
Definition: DwarfUnit.cpp:280
uint16_t getDwarfVersion() const
Definition: DwarfUnit.h:88
void addDIETypeSignature(DIE &Die, uint64_t Signature)
Add a type&#39;s DW_AT_signature and set the declaration flag.
Definition: DwarfUnit.cpp:345
BumpPtrAllocator DIEValueAllocator
Definition: DwarfUnit.h:47
void addStringOffsetsStart()
Add the DW_AT_str_offsets_base attribute to the unit DIE.
Definition: DwarfUnit.cpp:1643
std::vector< DIEBlock * > DIEBlocks
A list of all the DIEBlocks in use.
Definition: DwarfUnit.h:64
uint16_t getDwarfVersion() const
Returns the Dwarf Version.
void addUInt(DIEValueList &Die, dwarf::Attribute Attribute, Optional< dwarf::Form > Form, uint64_t Integer)
Add an unsigned integer attribute data and value.
Definition: DwarfUnit.cpp:209
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:49
DIEBlock - Represents a block of values.
Definition: DIE.h:880
DwarfFile * DU
Definition: DwarfUnit.h:54
void constructSubprogramArguments(DIE &Buffer, DITypeRefArray Args)
Construct function argument DIEs.
Definition: DwarfUnit.cpp:788
DwarfUnit(dwarf::Tag, const DICompileUnit *Node, AsmPrinter *A, DwarfDebug *DW, DwarfFile *DWU)
Definition: DwarfUnit.cpp:72
constexpr char Args[]
Key for Kernel::Metadata::mArgs.
Basic type, like &#39;int&#39; or &#39;float&#39;.