1 //===- DIBuilder.h - Debug Information Builder ------------------*- 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 defines a DIBuilder that is useful for creating debugging
11 // information entries in LLVM IR form.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_IR_DIBUILDER_H
16 #define LLVM_IR_DIBUILDER_H
18 #include "llvm/ADT/ArrayRef.h"
19 #include "llvm/ADT/StringRef.h"
20 #include "llvm/IR/DebugInfo.h"
21 #include "llvm/IR/TrackingMDRef.h"
22 #include "llvm/IR/ValueHandle.h"
23 #include "llvm/Support/DataTypes.h"
37 LLVMContext &VMContext;
39 TempMDTuple TempEnumTypes;
40 TempMDTuple TempRetainTypes;
41 TempMDTuple TempSubprograms;
43 TempMDTuple TempImportedModules;
45 Function *DeclareFn; // llvm.dbg.declare
46 Function *ValueFn; // llvm.dbg.value
48 SmallVector<Metadata *, 4> AllEnumTypes;
49 /// Track the RetainTypes, since they can be updated later on.
50 SmallVector<TrackingMDNodeRef, 4> AllRetainTypes;
51 SmallVector<Metadata *, 4> AllSubprograms;
52 SmallVector<Metadata *, 4> AllGVs;
53 SmallVector<TrackingMDNodeRef, 4> AllImportedModules;
55 /// \brief Track nodes that may be unresolved.
56 SmallVector<TrackingMDNodeRef, 4> UnresolvedNodes;
57 bool AllowUnresolvedNodes;
59 /// Each subprogram's preserved local variables.
60 DenseMap<MDNode *, std::vector<TrackingMDNodeRef>> PreservedVariables;
62 DIBuilder(const DIBuilder &) = delete;
63 void operator=(const DIBuilder &) = delete;
65 /// \brief Create a temporary.
67 /// Create an \a temporary node and track it in \a UnresolvedNodes.
68 void trackIfUnresolved(MDNode *N);
71 /// \brief Construct a builder for a module.
73 /// If \c AllowUnresolved, collect unresolved nodes attached to the module
74 /// in order to resolve cycles during \a finalize().
75 explicit DIBuilder(Module &M, bool AllowUnresolved = true);
76 enum DebugEmissionKind { FullDebug=1, LineTablesOnly };
78 /// finalize - Construct any deferred debug info descriptors.
81 /// createCompileUnit - A CompileUnit provides an anchor for all debugging
82 /// information generated during this instance of compilation.
83 /// @param Lang Source programming language, eg. dwarf::DW_LANG_C99
84 /// @param File File name
85 /// @param Dir Directory
86 /// @param Producer Identify the producer of debugging information and code.
87 /// Usually this is a compiler version string.
88 /// @param isOptimized A boolean flag which indicates whether optimization
90 /// @param Flags This string lists command line options. This string is
91 /// directly embedded in debug info output which may be used
92 /// by a tool analyzing generated debugging information.
93 /// @param RV This indicates runtime version for languages like
95 /// @param SplitName The name of the file that we'll split debug info out
97 /// @param Kind The kind of debug information to generate.
98 /// @param EmitDebugInfo A boolean flag which indicates whether debug
99 /// information should be written to the final
100 /// output or not. When this is false, debug
101 /// information annotations will be present in
102 /// the IL but they are not written to the final
103 /// assembly or object file. This supports tracking
104 /// source location information in the back end
105 /// without actually changing the output (e.g.,
106 /// when using optimization remarks).
107 MDCompileUnit *createCompileUnit(unsigned Lang, StringRef File,
108 StringRef Dir, StringRef Producer,
109 bool isOptimized, StringRef Flags,
110 unsigned RV, StringRef SplitName = "",
111 DebugEmissionKind Kind = FullDebug,
112 bool EmitDebugInfo = true);
114 /// createFile - Create a file descriptor to hold debugging information
116 MDFile *createFile(StringRef Filename, StringRef Directory);
118 /// createEnumerator - Create a single enumerator value.
119 MDEnumerator *createEnumerator(StringRef Name, int64_t Val);
121 /// \brief Create a DWARF unspecified type.
122 MDBasicType *createUnspecifiedType(StringRef Name);
124 /// \brief Create C++11 nullptr type.
125 MDBasicType *createNullPtrType();
127 /// createBasicType - Create debugging information entry for a basic
129 /// @param Name Type name.
130 /// @param SizeInBits Size of the type.
131 /// @param AlignInBits Type alignment.
132 /// @param Encoding DWARF encoding code, e.g. dwarf::DW_ATE_float.
133 MDBasicType *createBasicType(StringRef Name, uint64_t SizeInBits,
134 uint64_t AlignInBits, unsigned Encoding);
136 /// createQualifiedType - Create debugging information entry for a qualified
137 /// type, e.g. 'const int'.
138 /// @param Tag Tag identifing type, e.g. dwarf::TAG_volatile_type
139 /// @param FromTy Base Type.
140 MDDerivedType *createQualifiedType(unsigned Tag, MDType *FromTy);
142 /// createPointerType - Create debugging information entry for a pointer.
143 /// @param PointeeTy Type pointed by this pointer.
144 /// @param SizeInBits Size.
145 /// @param AlignInBits Alignment. (optional)
146 /// @param Name Pointer type name. (optional)
147 MDDerivedType *createPointerType(MDType *PointeeTy, uint64_t SizeInBits,
148 uint64_t AlignInBits = 0,
149 StringRef Name = "");
151 /// \brief Create debugging information entry for a pointer to member.
152 /// @param PointeeTy Type pointed to by this pointer.
153 /// @param SizeInBits Size.
154 /// @param AlignInBits Alignment. (optional)
155 /// @param Class Type for which this pointer points to members of.
156 MDDerivedType *createMemberPointerType(MDType *PointeeTy, MDType *Class,
158 uint64_t AlignInBits = 0);
160 /// createReferenceType - Create debugging information entry for a c++
161 /// style reference or rvalue reference type.
162 MDDerivedType *createReferenceType(unsigned Tag, MDType *RTy);
164 /// createTypedef - Create debugging information entry for a typedef.
165 /// @param Ty Original type.
166 /// @param Name Typedef name.
167 /// @param File File where this type is defined.
168 /// @param LineNo Line number.
169 /// @param Context The surrounding context for the typedef.
170 MDDerivedType *createTypedef(MDType *Ty, StringRef Name, MDFile *File,
171 unsigned LineNo, MDScope *Context);
173 /// createFriend - Create debugging information entry for a 'friend'.
174 MDDerivedType *createFriend(MDType *Ty, MDType *FriendTy);
176 /// createInheritance - Create debugging information entry to establish
177 /// inheritance relationship between two types.
178 /// @param Ty Original type.
179 /// @param BaseTy Base type. Ty is inherits from base.
180 /// @param BaseOffset Base offset.
181 /// @param Flags Flags to describe inheritance attribute,
183 MDDerivedType *createInheritance(MDType *Ty, MDType *BaseTy,
184 uint64_t BaseOffset, unsigned Flags);
186 /// createMemberType - Create debugging information entry for a member.
187 /// @param Scope Member scope.
188 /// @param Name Member name.
189 /// @param File File where this member is defined.
190 /// @param LineNo Line number.
191 /// @param SizeInBits Member size.
192 /// @param AlignInBits Member alignment.
193 /// @param OffsetInBits Member offset.
194 /// @param Flags Flags to encode member attribute, e.g. private
195 /// @param Ty Parent type.
196 MDDerivedType *createMemberType(MDScope *Scope, StringRef Name,
197 MDFile *File, unsigned LineNo,
198 uint64_t SizeInBits, uint64_t AlignInBits,
199 uint64_t OffsetInBits, unsigned Flags,
202 /// createStaticMemberType - Create debugging information entry for a
203 /// C++ static data member.
204 /// @param Scope Member scope.
205 /// @param Name Member name.
206 /// @param File File where this member is declared.
207 /// @param LineNo Line number.
208 /// @param Ty Type of the static member.
209 /// @param Flags Flags to encode member attribute, e.g. private.
210 /// @param Val Const initializer of the member.
211 MDDerivedType *createStaticMemberType(MDScope *Scope, StringRef Name,
212 MDFile *File, unsigned LineNo,
213 MDType *Ty, unsigned Flags,
214 llvm::Constant *Val);
216 /// createObjCIVar - Create debugging information entry for Objective-C
217 /// instance variable.
218 /// @param Name Member name.
219 /// @param File File where this member is defined.
220 /// @param LineNo Line number.
221 /// @param SizeInBits Member size.
222 /// @param AlignInBits Member alignment.
223 /// @param OffsetInBits Member offset.
224 /// @param Flags Flags to encode member attribute, e.g. private
225 /// @param Ty Parent type.
226 /// @param PropertyNode Property associated with this ivar.
227 MDDerivedType *createObjCIVar(StringRef Name, MDFile *File, unsigned LineNo,
228 uint64_t SizeInBits, uint64_t AlignInBits,
229 uint64_t OffsetInBits, unsigned Flags,
230 MDType *Ty, MDNode *PropertyNode);
232 /// createObjCProperty - Create debugging information entry for Objective-C
234 /// @param Name Property name.
235 /// @param File File where this property is defined.
236 /// @param LineNumber Line number.
237 /// @param GetterName Name of the Objective C property getter selector.
238 /// @param SetterName Name of the Objective C property setter selector.
239 /// @param PropertyAttributes Objective C property attributes.
241 MDObjCProperty *createObjCProperty(StringRef Name, MDFile *File,
243 StringRef GetterName,
244 StringRef SetterName,
245 unsigned PropertyAttributes, MDType *Ty);
247 /// createClassType - Create debugging information entry for a class.
248 /// @param Scope Scope in which this class is defined.
249 /// @param Name class name.
250 /// @param File File where this member is defined.
251 /// @param LineNumber Line number.
252 /// @param SizeInBits Member size.
253 /// @param AlignInBits Member alignment.
254 /// @param OffsetInBits Member offset.
255 /// @param Flags Flags to encode member attribute, e.g. private
256 /// @param Elements class members.
257 /// @param VTableHolder Debug info of the base class that contains vtable
258 /// for this type. This is used in
259 /// DW_AT_containing_type. See DWARF documentation
261 /// @param TemplateParms Template type parameters.
262 /// @param UniqueIdentifier A unique identifier for the class.
263 MDCompositeType *createClassType(
264 MDScope *Scope, StringRef Name, MDFile *File, unsigned LineNumber,
265 uint64_t SizeInBits, uint64_t AlignInBits, uint64_t OffsetInBits,
266 unsigned Flags, MDType *DerivedFrom, DebugNodeArray Elements,
267 MDType *VTableHolder = nullptr, MDNode *TemplateParms = nullptr,
268 StringRef UniqueIdentifier = "");
270 /// createStructType - Create debugging information entry for a struct.
271 /// @param Scope Scope in which this struct is defined.
272 /// @param Name Struct name.
273 /// @param File File where this member is defined.
274 /// @param LineNumber Line number.
275 /// @param SizeInBits Member size.
276 /// @param AlignInBits Member alignment.
277 /// @param Flags Flags to encode member attribute, e.g. private
278 /// @param Elements Struct elements.
279 /// @param RunTimeLang Optional parameter, Objective-C runtime version.
280 /// @param UniqueIdentifier A unique identifier for the struct.
281 MDCompositeType *createStructType(
282 MDScope *Scope, StringRef Name, MDFile *File, unsigned LineNumber,
283 uint64_t SizeInBits, uint64_t AlignInBits, unsigned Flags,
284 MDType *DerivedFrom, DebugNodeArray Elements, unsigned RunTimeLang = 0,
285 MDType *VTableHolder = nullptr, StringRef UniqueIdentifier = "");
287 /// createUnionType - Create debugging information entry for an union.
288 /// @param Scope Scope in which this union is defined.
289 /// @param Name Union name.
290 /// @param File File where this member is defined.
291 /// @param LineNumber Line number.
292 /// @param SizeInBits Member size.
293 /// @param AlignInBits Member alignment.
294 /// @param Flags Flags to encode member attribute, e.g. private
295 /// @param Elements Union elements.
296 /// @param RunTimeLang Optional parameter, Objective-C runtime version.
297 /// @param UniqueIdentifier A unique identifier for the union.
298 MDCompositeType *createUnionType(MDScope *Scope, StringRef Name,
299 MDFile *File, unsigned LineNumber,
300 uint64_t SizeInBits, uint64_t AlignInBits,
301 unsigned Flags, DebugNodeArray Elements,
302 unsigned RunTimeLang = 0,
303 StringRef UniqueIdentifier = "");
305 /// createTemplateTypeParameter - Create debugging information for template
307 /// @param Scope Scope in which this type is defined.
308 /// @param Name Type parameter name.
309 /// @param Ty Parameter type.
310 MDTemplateTypeParameter *
311 createTemplateTypeParameter(MDScope *Scope, StringRef Name, MDType *Ty);
313 /// createTemplateValueParameter - Create debugging information for template
315 /// @param Scope Scope in which this type is defined.
316 /// @param Name Value parameter name.
317 /// @param Ty Parameter type.
318 /// @param Val Constant parameter value.
319 MDTemplateValueParameter *createTemplateValueParameter(MDScope *Scope,
324 /// \brief Create debugging information for a template template parameter.
325 /// @param Scope Scope in which this type is defined.
326 /// @param Name Value parameter name.
327 /// @param Ty Parameter type.
328 /// @param Val The fully qualified name of the template.
329 MDTemplateValueParameter *createTemplateTemplateParameter(MDScope *Scope,
334 /// \brief Create debugging information for a template parameter pack.
335 /// @param Scope Scope in which this type is defined.
336 /// @param Name Value parameter name.
337 /// @param Ty Parameter type.
338 /// @param Val An array of types in the pack.
339 MDTemplateValueParameter *createTemplateParameterPack(MDScope *Scope,
344 /// createArrayType - Create debugging information entry for an array.
345 /// @param Size Array size.
346 /// @param AlignInBits Alignment.
347 /// @param Ty Element type.
348 /// @param Subscripts Subscripts.
349 MDCompositeType *createArrayType(uint64_t Size, uint64_t AlignInBits,
350 MDType *Ty, DebugNodeArray Subscripts);
352 /// createVectorType - Create debugging information entry for a vector type.
353 /// @param Size Array size.
354 /// @param AlignInBits Alignment.
355 /// @param Ty Element type.
356 /// @param Subscripts Subscripts.
357 MDCompositeType *createVectorType(uint64_t Size, uint64_t AlignInBits,
358 MDType *Ty, DebugNodeArray Subscripts);
360 /// createEnumerationType - Create debugging information entry for an
362 /// @param Scope Scope in which this enumeration is defined.
363 /// @param Name Union name.
364 /// @param File File where this member is defined.
365 /// @param LineNumber Line number.
366 /// @param SizeInBits Member size.
367 /// @param AlignInBits Member alignment.
368 /// @param Elements Enumeration elements.
369 /// @param UnderlyingType Underlying type of a C++11/ObjC fixed enum.
370 /// @param UniqueIdentifier A unique identifier for the enum.
371 MDCompositeType *createEnumerationType(
372 MDScope *Scope, StringRef Name, MDFile *File, unsigned LineNumber,
373 uint64_t SizeInBits, uint64_t AlignInBits, DebugNodeArray Elements,
374 MDType *UnderlyingType, StringRef UniqueIdentifier = "");
376 /// createSubroutineType - Create subroutine type.
377 /// @param File File in which this subroutine is defined.
378 /// @param ParameterTypes An array of subroutine parameter types. This
379 /// includes return type at 0th index.
380 /// @param Flags E.g.: LValueReference.
381 /// These flags are used to emit dwarf attributes.
382 MDSubroutineType *createSubroutineType(MDFile *File,
383 MDTypeRefArray ParameterTypes,
386 /// createArtificialType - Create a new MDType* with "artificial" flag set.
387 MDType *createArtificialType(MDType *Ty);
389 /// createObjectPointerType - Create a new MDType* with the "object pointer"
391 MDType *createObjectPointerType(MDType *Ty);
393 /// \brief Create a permanent forward-declared type.
394 MDCompositeType *createForwardDecl(unsigned Tag, StringRef Name,
395 MDScope *Scope, MDFile *F, unsigned Line,
396 unsigned RuntimeLang = 0,
397 uint64_t SizeInBits = 0,
398 uint64_t AlignInBits = 0,
399 StringRef UniqueIdentifier = "");
401 /// \brief Create a temporary forward-declared type.
402 MDCompositeType *createReplaceableCompositeType(
403 unsigned Tag, StringRef Name, MDScope *Scope, MDFile *F, unsigned Line,
404 unsigned RuntimeLang = 0, uint64_t SizeInBits = 0,
405 uint64_t AlignInBits = 0, unsigned Flags = DebugNode::FlagFwdDecl,
406 StringRef UniqueIdentifier = "");
408 /// retainType - Retain MDType* in a module even if it is not referenced
409 /// through debug info anchors.
410 void retainType(MDType *T);
412 /// createUnspecifiedParameter - Create unspecified parameter type
413 /// for a subroutine type.
414 MDBasicType *createUnspecifiedParameter();
416 /// getOrCreateArray - Get a DebugNodeArray, create one if required.
417 DebugNodeArray getOrCreateArray(ArrayRef<Metadata *> Elements);
419 /// getOrCreateTypeArray - Get a MDTypeRefArray, create one if required.
420 MDTypeRefArray getOrCreateTypeArray(ArrayRef<Metadata *> Elements);
422 /// getOrCreateSubrange - Create a descriptor for a value range. This
423 /// implicitly uniques the values returned.
424 MDSubrange *getOrCreateSubrange(int64_t Lo, int64_t Count);
426 /// createGlobalVariable - Create a new descriptor for the specified
428 /// @param Context Variable scope.
429 /// @param Name Name of the variable.
430 /// @param LinkageName Mangled name of the variable.
431 /// @param File File where this variable is defined.
432 /// @param LineNo Line number.
433 /// @param Ty Variable Type.
434 /// @param isLocalToUnit Boolean flag indicate whether this variable is
435 /// externally visible or not.
436 /// @param Val llvm::Value of the variable.
437 /// @param Decl Reference to the corresponding declaration.
438 MDGlobalVariable *createGlobalVariable(MDScope *Context, StringRef Name,
439 StringRef LinkageName, MDFile *File,
440 unsigned LineNo, MDType *Ty,
443 MDNode *Decl = nullptr);
445 /// createTempGlobalVariableFwdDecl - Identical to createGlobalVariable
446 /// except that the resulting DbgNode is temporary and meant to be RAUWed.
447 MDGlobalVariable *createTempGlobalVariableFwdDecl(
448 MDScope *Context, StringRef Name, StringRef LinkageName, MDFile *File,
449 unsigned LineNo, MDType *Ty, bool isLocalToUnit, llvm::Constant *Val,
450 MDNode *Decl = nullptr);
452 /// createLocalVariable - Create a new descriptor for the specified
454 /// @param Tag Dwarf TAG. Usually DW_TAG_auto_variable or
455 /// DW_TAG_arg_variable.
456 /// @param Scope Variable scope.
457 /// @param Name Variable name.
458 /// @param File File where this variable is defined.
459 /// @param LineNo Line number.
460 /// @param Ty Variable Type
461 /// @param AlwaysPreserve Boolean. Set to true if debug info for this
462 /// variable should be preserved in optimized build.
463 /// @param Flags Flags, e.g. artificial variable.
464 /// @param ArgNo If this variable is an argument then this argument's
465 /// number. 1 indicates 1st argument.
466 MDLocalVariable *createLocalVariable(unsigned Tag, MDScope *Scope,
467 StringRef Name, MDFile *File,
468 unsigned LineNo, MDType *Ty,
469 bool AlwaysPreserve = false,
473 /// createExpression - Create a new descriptor for the specified
474 /// variable which has a complex address expression for its address.
475 /// @param Addr An array of complex address operations.
476 MDExpression *createExpression(ArrayRef<uint64_t> Addr = None);
477 MDExpression *createExpression(ArrayRef<int64_t> Addr);
479 /// createBitPieceExpression - Create a descriptor to describe one part
480 /// of aggregate variable that is fragmented across multiple Values.
482 /// @param OffsetInBits Offset of the piece in bits.
483 /// @param SizeInBits Size of the piece in bits.
484 MDExpression *createBitPieceExpression(unsigned OffsetInBits,
485 unsigned SizeInBits);
487 /// createFunction - Create a new descriptor for the specified subprogram.
488 /// See comments in MDSubprogram* for descriptions of these fields.
489 /// @param Scope Function scope.
490 /// @param Name Function name.
491 /// @param LinkageName Mangled function name.
492 /// @param File File where this variable is defined.
493 /// @param LineNo Line number.
494 /// @param Ty Function type.
495 /// @param isLocalToUnit True if this function is not externally visible.
496 /// @param isDefinition True if this is a function definition.
497 /// @param ScopeLine Set to the beginning of the scope this starts
498 /// @param Flags e.g. is this function prototyped or not.
499 /// These flags are used to emit dwarf attributes.
500 /// @param isOptimized True if optimization is ON.
501 /// @param Fn llvm::Function pointer.
502 /// @param TParam Function template parameters.
504 createFunction(MDScope *Scope, StringRef Name, StringRef LinkageName,
505 MDFile *File, unsigned LineNo, MDSubroutineType *Ty,
506 bool isLocalToUnit, bool isDefinition, unsigned ScopeLine,
507 unsigned Flags = 0, bool isOptimized = false,
508 Function *Fn = nullptr, MDNode *TParam = nullptr,
509 MDNode *Decl = nullptr);
511 /// createTempFunctionFwdDecl - Identical to createFunction,
512 /// except that the resulting DbgNode is meant to be RAUWed.
513 MDSubprogram *createTempFunctionFwdDecl(
514 MDScope *Scope, StringRef Name, StringRef LinkageName, MDFile *File,
515 unsigned LineNo, MDSubroutineType *Ty, bool isLocalToUnit,
516 bool isDefinition, unsigned ScopeLine, unsigned Flags = 0,
517 bool isOptimized = false, Function *Fn = nullptr,
518 MDNode *TParam = nullptr, MDNode *Decl = nullptr);
520 /// FIXME: this is added for dragonegg. Once we update dragonegg
521 /// to call resolve function, this will be removed.
523 createFunction(MDScopeRef Scope, StringRef Name, StringRef LinkageName,
524 MDFile *File, unsigned LineNo, MDSubroutineType *Ty,
525 bool isLocalToUnit, bool isDefinition, unsigned ScopeLine,
526 unsigned Flags = 0, bool isOptimized = false,
527 Function *Fn = nullptr, MDNode *TParam = nullptr,
528 MDNode *Decl = nullptr);
530 /// createMethod - Create a new descriptor for the specified C++ method.
531 /// See comments in MDSubprogram* for descriptions of these fields.
532 /// @param Scope Function scope.
533 /// @param Name Function name.
534 /// @param LinkageName Mangled function name.
535 /// @param File File where this variable is defined.
536 /// @param LineNo Line number.
537 /// @param Ty Function type.
538 /// @param isLocalToUnit True if this function is not externally visible..
539 /// @param isDefinition True if this is a function definition.
540 /// @param Virtuality Attributes describing virtualness. e.g. pure
541 /// virtual function.
542 /// @param VTableIndex Index no of this method in virtual table.
543 /// @param VTableHolder Type that holds vtable.
544 /// @param Flags e.g. is this function prototyped or not.
545 /// This flags are used to emit dwarf attributes.
546 /// @param isOptimized True if optimization is ON.
547 /// @param Fn llvm::Function pointer.
548 /// @param TParam Function template parameters.
550 createMethod(MDScope *Scope, StringRef Name, StringRef LinkageName,
551 MDFile *File, unsigned LineNo, MDSubroutineType *Ty,
552 bool isLocalToUnit, bool isDefinition, unsigned Virtuality = 0,
553 unsigned VTableIndex = 0, MDType *VTableHolder = nullptr,
554 unsigned Flags = 0, bool isOptimized = false,
555 Function *Fn = nullptr, MDNode *TParam = nullptr);
557 /// createNameSpace - This creates new descriptor for a namespace
558 /// with the specified parent scope.
559 /// @param Scope Namespace scope
560 /// @param Name Name of this namespace
561 /// @param File Source file
562 /// @param LineNo Line number
563 MDNamespace *createNameSpace(MDScope *Scope, StringRef Name, MDFile *File,
566 /// createLexicalBlockFile - This creates a descriptor for a lexical
567 /// block with a new file attached. This merely extends the existing
568 /// lexical block as it crosses a file.
569 /// @param Scope Lexical block.
570 /// @param File Source file.
571 /// @param Discriminator DWARF path discriminator value.
572 MDLexicalBlockFile *createLexicalBlockFile(MDScope *Scope, MDFile *File,
573 unsigned Discriminator = 0);
575 /// createLexicalBlock - This creates a descriptor for a lexical block
576 /// with the specified parent context.
577 /// @param Scope Parent lexical scope.
578 /// @param File Source file.
579 /// @param Line Line number.
580 /// @param Col Column number.
581 MDLexicalBlock *createLexicalBlock(MDScope *Scope, MDFile *File,
582 unsigned Line, unsigned Col);
584 /// \brief Create a descriptor for an imported module.
585 /// @param Context The scope this module is imported into
586 /// @param NS The namespace being imported here
587 /// @param Line Line number
588 MDImportedEntity *createImportedModule(MDScope *Context, MDNamespace *NS,
591 /// \brief Create a descriptor for an imported module.
592 /// @param Context The scope this module is imported into
593 /// @param NS An aliased namespace
594 /// @param Line Line number
595 MDImportedEntity *createImportedModule(MDScope *Context,
596 MDImportedEntity *NS, unsigned Line);
598 /// \brief Create a descriptor for an imported function.
599 /// @param Context The scope this module is imported into
600 /// @param Decl The declaration (or definition) of a function, type, or
602 /// @param Line Line number
603 MDImportedEntity *createImportedDeclaration(MDScope *Context,
604 DebugNode *Decl, unsigned Line,
605 StringRef Name = "");
607 /// insertDeclare - Insert a new llvm.dbg.declare intrinsic call.
608 /// @param Storage llvm::Value of the variable
609 /// @param VarInfo Variable's debug info descriptor.
610 /// @param Expr A complex location expression.
611 /// @param DL Debug info location.
612 /// @param InsertAtEnd Location for the new intrinsic.
613 Instruction *insertDeclare(llvm::Value *Storage, MDLocalVariable *VarInfo,
614 MDExpression *Expr, const MDLocation *DL,
615 BasicBlock *InsertAtEnd);
617 /// insertDeclare - Insert a new llvm.dbg.declare intrinsic call.
618 /// @param Storage llvm::Value of the variable
619 /// @param VarInfo Variable's debug info descriptor.
620 /// @param Expr A complex location expression.
621 /// @param DL Debug info location.
622 /// @param InsertBefore Location for the new intrinsic.
623 Instruction *insertDeclare(llvm::Value *Storage, MDLocalVariable *VarInfo,
624 MDExpression *Expr, const MDLocation *DL,
625 Instruction *InsertBefore);
627 /// insertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
628 /// @param Val llvm::Value of the variable
629 /// @param Offset Offset
630 /// @param VarInfo Variable's debug info descriptor.
631 /// @param Expr A complex location expression.
632 /// @param DL Debug info location.
633 /// @param InsertAtEnd Location for the new intrinsic.
634 Instruction *insertDbgValueIntrinsic(llvm::Value *Val, uint64_t Offset,
635 MDLocalVariable *VarInfo,
637 const MDLocation *DL,
638 BasicBlock *InsertAtEnd);
640 /// insertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
641 /// @param Val llvm::Value of the variable
642 /// @param Offset Offset
643 /// @param VarInfo Variable's debug info descriptor.
644 /// @param Expr A complex location expression.
645 /// @param DL Debug info location.
646 /// @param InsertBefore Location for the new intrinsic.
647 Instruction *insertDbgValueIntrinsic(llvm::Value *Val, uint64_t Offset,
648 MDLocalVariable *VarInfo,
650 const MDLocation *DL,
651 Instruction *InsertBefore);
653 /// \brief Replace the vtable holder in the given composite type.
655 /// If this creates a self reference, it may orphan some unresolved cycles
656 /// in the operands of \c T, so \a DIBuilder needs to track that.
657 void replaceVTableHolder(MDCompositeType *&T,
658 MDCompositeType *VTableHolder);
660 /// \brief Replace arrays on a composite type.
662 /// If \c T is resolved, but the arrays aren't -- which can happen if \c T
663 /// has a self-reference -- \a DIBuilder needs to track the array to
665 void replaceArrays(MDCompositeType *&T, DebugNodeArray Elements,
666 DebugNodeArray TParems = DebugNodeArray());
668 /// \brief Replace a temporary node.
670 /// Call \a MDNode::replaceAllUsesWith() on \c N, replacing it with \c
673 /// If \c Replacement is the same as \c N.get(), instead call \a
674 /// MDNode::replaceWithUniqued(). In this case, the uniqued node could
675 /// have a different address, so we return the final address.
676 template <class NodeTy>
677 NodeTy *replaceTemporary(TempMDNode &&N, NodeTy *Replacement) {
678 if (N.get() == Replacement)
679 return cast<NodeTy>(MDNode::replaceWithUniqued(std::move(N)));
681 N->replaceAllUsesWith(Replacement);
685 } // end namespace llvm