1 //===--- llvm/Analysis/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_ANALYSIS_DIBUILDER_H
16 #define LLVM_ANALYSIS_DIBUILDER_H
18 #include "llvm/Support/DataTypes.h"
19 #include "llvm/ADT/ArrayRef.h"
20 #include "llvm/ADT/StringRef.h"
36 class DIGlobalVariable;
42 class DITemplateTypeParameter;
43 class DITemplateValueParameter;
48 LLVMContext & VMContext;
51 Function *DeclareFn; // llvm.dbg.declare
52 Function *ValueFn; // llvm.dbg.value
54 DIBuilder(const DIBuilder &); // DO NOT IMPLEMENT
55 void operator=(const DIBuilder &); // DO NOT IMPLEMENT
58 explicit DIBuilder(Module &M);
59 const MDNode *getCU() { return TheCU; }
60 enum ComplexAddrKind { OpPlus=1, OpDeref };
62 /// createCompileUnit - A CompileUnit provides an anchor for all debugging
63 /// information generated during this instance of compilation.
64 /// @param Lang Source programming language, eg. dwarf::DW_LANG_C99
65 /// @param File File name
66 /// @param Dir Directory
67 /// @param Producer String identify producer of debugging information.
68 /// Usuall this is a compiler version string.
69 /// @param isOptimized A boolean flag which indicates whether optimization
71 /// @param Flags This string lists command line options. This string is
72 /// directly embedded in debug info output which may be used
73 /// by a tool analyzing generated debugging information.
74 /// @param RV This indicates runtime version for languages like
76 void createCompileUnit(unsigned Lang, StringRef File, StringRef Dir,
78 bool isOptimized, StringRef Flags, unsigned RV);
80 /// createFile - Create a file descriptor to hold debugging information
82 DIFile createFile(StringRef Filename, StringRef Directory);
84 /// createEnumerator - Create a single enumerator value.
85 DIEnumerator createEnumerator(StringRef Name, uint64_t Val);
87 /// createBasicType - Create debugging information entry for a basic
89 /// @param Name Type name.
90 /// @param SizeInBits Size of the type.
91 /// @param AlignInBits Type alignment.
92 /// @param Encoding DWARF encoding code, e.g. dwarf::DW_ATE_float.
93 DIType createBasicType(StringRef Name, uint64_t SizeInBits,
94 uint64_t AlignInBits, unsigned Encoding);
96 /// createQualifiedType - Create debugging information entry for a qualified
97 /// type, e.g. 'const int'.
98 /// @param Tag Tag identifing type, e.g. dwarf::TAG_volatile_type
99 /// @param FromTy Base Type.
100 DIType createQualifiedType(unsigned Tag, DIType FromTy);
102 /// createPointerType - Create debugging information entry for a pointer.
103 /// @param PointeeTy Type pointed by this pointer.
104 /// @param SizeInBits Size.
105 /// @param AlignInBits Alignment. (optional)
106 /// @param Name Pointer type name. (optional)
107 DIType createPointerType(DIType PointeeTy, uint64_t SizeInBits,
108 uint64_t AlignInBits = 0,
109 StringRef Name = StringRef());
111 /// createReferenceType - Create debugging information entry for a c++
113 DIType createReferenceType(DIType RTy);
115 /// createTypedef - Create debugging information entry for a typedef.
116 /// @param Ty Original type.
117 /// @param Name Typedef name.
118 /// @param File File where this type is defined.
119 /// @param LineNo Line number.
120 /// @param Context The surrounding context for the typedef.
121 DIType createTypedef(DIType Ty, StringRef Name, DIFile File,
122 unsigned LineNo, DIDescriptor Context);
124 /// createFriend - Create debugging information entry for a 'friend'.
125 DIType createFriend(DIType Ty, DIType FriendTy);
127 /// createInheritance - Create debugging information entry to establish
128 /// inheritance relationship between two types.
129 /// @param Ty Original type.
130 /// @param BaseTy Base type. Ty is inherits from base.
131 /// @param BaseOffset Base offset.
132 /// @param Flags Flags to describe inheritance attribute,
134 DIType createInheritance(DIType Ty, DIType BaseTy, uint64_t BaseOffset,
137 /// createMemberType - Create debugging information entry for a member.
138 /// @param Name Member name.
139 /// @param File File where this member is defined.
140 /// @param LineNo Line number.
141 /// @param SizeInBits Member size.
142 /// @param AlignInBits Member alignment.
143 /// @param OffsetInBits Member offset.
144 /// @param Flags Flags to encode member attribute, e.g. private
145 /// @param Ty Parent type.
146 DIType createMemberType(StringRef Name, DIFile File,
147 unsigned LineNo, uint64_t SizeInBits,
148 uint64_t AlignInBits, uint64_t OffsetInBits,
149 unsigned Flags, DIType Ty);
151 /// createObjCIVar - Create debugging information entry for Objective-C
152 /// instance variable.
153 /// @param Name Member name.
154 /// @param File File where this member is defined.
155 /// @param LineNo Line number.
156 /// @param SizeInBits Member size.
157 /// @param AlignInBits Member alignment.
158 /// @param OffsetInBits Member offset.
159 /// @param Flags Flags to encode member attribute, e.g. private
160 /// @param Ty Parent type.
161 /// @param PropertyName Name of the Objective C property assoicated with
163 /// @param GetterName Name of the Objective C property getter selector.
164 /// @param SetterName Name of the Objective C property setter selector.
165 /// @param PropertyAttributes Objective C property attributes.
166 DIType createObjCIVar(StringRef Name, DIFile File,
167 unsigned LineNo, uint64_t SizeInBits,
168 uint64_t AlignInBits, uint64_t OffsetInBits,
169 unsigned Flags, DIType Ty,
170 StringRef PropertyName = StringRef(),
171 StringRef PropertyGetterName = StringRef(),
172 StringRef PropertySetterName = StringRef(),
173 unsigned PropertyAttributes = 0);
175 /// createClassType - Create debugging information entry for a class.
176 /// @param Scope Scope in which this class is defined.
177 /// @param Name class name.
178 /// @param File File where this member is defined.
179 /// @param LineNo Line number.
180 /// @param SizeInBits Member size.
181 /// @param AlignInBits Member alignment.
182 /// @param OffsetInBits Member offset.
183 /// @param Flags Flags to encode member attribute, e.g. private
184 /// @param Elements class members.
185 /// @param VTableHolder Debug info of the base class that contains vtable
186 /// for this type. This is used in
187 /// DW_AT_containing_type. See DWARF documentation
189 /// @param TemplateParms Template type parameters.
190 DIType createClassType(DIDescriptor Scope, StringRef Name, DIFile File,
191 unsigned LineNumber, uint64_t SizeInBits,
192 uint64_t AlignInBits, uint64_t OffsetInBits,
193 unsigned Flags, DIType DerivedFrom,
194 DIArray Elements, MDNode *VTableHolder = 0,
195 MDNode *TemplateParms = 0);
197 /// createStructType - Create debugging information entry for a struct.
198 /// @param Scope Scope in which this struct is defined.
199 /// @param Name Struct name.
200 /// @param File File where this member is defined.
201 /// @param LineNo Line number.
202 /// @param SizeInBits Member size.
203 /// @param AlignInBits Member alignment.
204 /// @param Flags Flags to encode member attribute, e.g. private
205 /// @param Elements Struct elements.
206 /// @param RunTimeLang Optional parameter, Objective-C runtime version.
207 DIType createStructType(DIDescriptor Scope, StringRef Name, DIFile File,
208 unsigned LineNumber, uint64_t SizeInBits,
209 uint64_t AlignInBits, unsigned Flags,
210 DIArray Elements, unsigned RunTimeLang = 0);
212 /// createUnionType - Create debugging information entry for an union.
213 /// @param Scope Scope in which this union is defined.
214 /// @param Name Union name.
215 /// @param File File where this member is defined.
216 /// @param LineNo Line number.
217 /// @param SizeInBits Member size.
218 /// @param AlignInBits Member alignment.
219 /// @param Flags Flags to encode member attribute, e.g. private
220 /// @param Elements Union elements.
221 /// @param RunTimeLang Optional parameter, Objective-C runtime version.
222 DIType createUnionType(DIDescriptor Scope, StringRef Name, DIFile File,
223 unsigned LineNumber, uint64_t SizeInBits,
224 uint64_t AlignInBits, unsigned Flags,
225 DIArray Elements, unsigned RunTimeLang = 0);
227 /// createTemplateTypeParameter - Create debugging information for template
229 /// @param Scope Scope in which this type is defined.
230 /// @param Name Type parameter name.
231 /// @param Ty Parameter type.
232 /// @param File File where this type parameter is defined.
233 /// @param LineNo Line number.
234 /// @param ColumnNo Column Number.
235 DITemplateTypeParameter
236 createTemplateTypeParameter(DIDescriptor Scope, StringRef Name, DIType Ty,
237 MDNode *File = 0, unsigned LineNo = 0,
238 unsigned ColumnNo = 0);
240 /// createTemplateValueParameter - Create debugging information for template
242 /// @param Scope Scope in which this type is defined.
243 /// @param Name Value parameter name.
244 /// @param Ty Parameter type.
245 /// @param Value Constant parameter value.
246 /// @param File File where this type parameter is defined.
247 /// @param LineNo Line number.
248 /// @param ColumnNo Column Number.
249 DITemplateValueParameter
250 createTemplateValueParameter(DIDescriptor Scope, StringRef Name, DIType Ty,
252 MDNode *File = 0, unsigned LineNo = 0,
253 unsigned ColumnNo = 0);
255 /// createArrayType - Create debugging information entry for an array.
256 /// @param Size Array size.
257 /// @param AlignInBits Alignment.
258 /// @param Ty Element type.
259 /// @param Subscripts Subscripts.
260 DIType createArrayType(uint64_t Size, uint64_t AlignInBits,
261 DIType Ty, DIArray Subscripts);
263 /// createVectorType - Create debugging information entry for a vector type.
264 /// @param Size Array size.
265 /// @param AlignInBits Alignment.
266 /// @param Ty Element type.
267 /// @param Subscripts Subscripts.
268 DIType createVectorType(uint64_t Size, uint64_t AlignInBits,
269 DIType Ty, DIArray Subscripts);
271 /// createEnumerationType - Create debugging information entry for an
273 /// @param Scope Scope in which this enumeration is defined.
274 /// @param Name Union name.
275 /// @param File File where this member is defined.
276 /// @param LineNo Line number.
277 /// @param SizeInBits Member size.
278 /// @param AlignInBits Member alignment.
279 /// @param Elements Enumeration elements.
280 DIType createEnumerationType(DIDescriptor Scope, StringRef Name,
281 DIFile File, unsigned LineNumber,
283 uint64_t AlignInBits, DIArray Elements);
285 /// createSubroutineType - Create subroutine type.
286 /// @param File File in which this subroutine is defined.
287 /// @param ParamterTypes An array of subroutine parameter types. This
288 /// includes return type at 0th index.
289 DIType createSubroutineType(DIFile File, DIArray ParameterTypes);
291 /// createArtificialType - Create a new DIType with "artificial" flag set.
292 DIType createArtificialType(DIType Ty);
294 /// createTemporaryType - Create a temporary forward-declared type.
295 DIType createTemporaryType();
296 DIType createTemporaryType(DIFile F);
298 /// retainType - Retain DIType in a module even if it is not referenced
299 /// through debug info anchors.
300 void retainType(DIType T);
302 /// createUnspecifiedParameter - Create unspeicified type descriptor
303 /// for a subroutine type.
304 DIDescriptor createUnspecifiedParameter();
306 /// getOrCreateArray - Get a DIArray, create one if required.
307 DIArray getOrCreateArray(ArrayRef<Value *> Elements);
309 /// getOrCreateSubrange - Create a descriptor for a value range. This
310 /// implicitly uniques the values returned.
311 DISubrange getOrCreateSubrange(int64_t Lo, int64_t Hi);
313 /// createGlobalVariable - Create a new descriptor for the specified global.
314 /// @param Name Name of the variable.
315 /// @param File File where this variable is defined.
316 /// @param LineNo Line number.
317 /// @param Ty Variable Type.
318 /// @param isLocalToUnit Boolean flag indicate whether this variable is
319 /// externally visible or not.
320 /// @param Val llvm::Value of the variable.
322 createGlobalVariable(StringRef Name, DIFile File, unsigned LineNo,
323 DIType Ty, bool isLocalToUnit, llvm::Value *Val);
326 /// createStaticVariable - Create a new descriptor for the specified
328 /// @param Conext Variable scope.
329 /// @param Name Name of the variable.
330 /// @param LinakgeName Mangled name of the variable.
331 /// @param File File where this variable is defined.
332 /// @param LineNo Line number.
333 /// @param Ty Variable Type.
334 /// @param isLocalToUnit Boolean flag indicate whether this variable is
335 /// externally visible or not.
336 /// @param Val llvm::Value of the variable.
338 createStaticVariable(DIDescriptor Context, StringRef Name,
339 StringRef LinkageName, DIFile File, unsigned LineNo,
340 DIType Ty, bool isLocalToUnit, llvm::Value *Val);
343 /// createLocalVariable - Create a new descriptor for the specified
345 /// @param Tag Dwarf TAG. Usually DW_TAG_auto_variable or
346 /// DW_TAG_arg_variable.
347 /// @param Scope Variable scope.
348 /// @param Name Variable name.
349 /// @param File File where this variable is defined.
350 /// @param LineNo Line number.
351 /// @param Ty Variable Type
352 /// @param AlwaysPreserve Boolean. Set to true if debug info for this
353 /// variable should be preserved in optimized build.
354 /// @param Flags Flags, e.g. artificial variable.
355 /// @param ArgNo If this variable is an arugment then this argument's
356 /// number. 1 indicates 1st argument.
357 DIVariable createLocalVariable(unsigned Tag, DIDescriptor Scope,
359 DIFile File, unsigned LineNo,
360 DIType Ty, bool AlwaysPreserve = false,
365 /// createComplexVariable - Create a new descriptor for the specified
366 /// variable which has a complex address expression for its address.
367 /// @param Tag Dwarf TAG. Usually DW_TAG_auto_variable or
368 /// DW_TAG_arg_variable.
369 /// @param Scope Variable scope.
370 /// @param Name Variable name.
371 /// @param File File where this variable is defined.
372 /// @param LineNo Line number.
373 /// @param Ty Variable Type
374 /// @param Addr An array of complex address operations.
375 /// @param ArgNo If this variable is an arugment then this argument's
376 /// number. 1 indicates 1st argument.
377 DIVariable createComplexVariable(unsigned Tag, DIDescriptor Scope,
378 StringRef Name, DIFile F, unsigned LineNo,
379 DIType Ty, ArrayRef<Value *> Addr,
382 /// createFunction - Create a new descriptor for the specified subprogram.
383 /// See comments in DISubprogram for descriptions of these fields.
384 /// @param Scope Function scope.
385 /// @param Name Function name.
386 /// @param LinkageName Mangled function name.
387 /// @param File File where this variable is defined.
388 /// @param LineNo Line number.
389 /// @param Ty Function type.
390 /// @param isLocalToUnit True if this function is not externally visible..
391 /// @param isDefinition True if this is a function definition.
392 /// @param Flags e.g. is this function prototyped or not.
393 /// This flags are used to emit dwarf attributes.
394 /// @param isOptimized True if optimization is ON.
395 /// @param Fn llvm::Function pointer.
396 /// @param TParam Function template parameters.
397 DISubprogram createFunction(DIDescriptor Scope, StringRef Name,
398 StringRef LinkageName,
399 DIFile File, unsigned LineNo,
400 DIType Ty, bool isLocalToUnit,
403 bool isOptimized = false,
408 /// createMethod - Create a new descriptor for the specified C++ method.
409 /// See comments in DISubprogram for descriptions of these fields.
410 /// @param Scope Function scope.
411 /// @param Name Function name.
412 /// @param LinkageName Mangled function name.
413 /// @param File File where this variable is defined.
414 /// @param LineNo Line number.
415 /// @param Ty Function type.
416 /// @param isLocalToUnit True if this function is not externally visible..
417 /// @param isDefinition True if this is a function definition.
418 /// @param Virtuality Attributes describing virtualness. e.g. pure
419 /// virtual function.
420 /// @param VTableIndex Index no of this method in virtual table.
421 /// @param VTableHolder Type that holds vtable.
422 /// @param Flags e.g. is this function prototyped or not.
423 /// This flags are used to emit dwarf attributes.
424 /// @param isOptimized True if optimization is ON.
425 /// @param Fn llvm::Function pointer.
426 /// @param TParam Function template parameters.
427 DISubprogram createMethod(DIDescriptor Scope, StringRef Name,
428 StringRef LinkageName,
429 DIFile File, unsigned LineNo,
430 DIType Ty, bool isLocalToUnit,
432 unsigned Virtuality = 0, unsigned VTableIndex = 0,
433 MDNode *VTableHolder = 0,
435 bool isOptimized = false,
439 /// createNameSpace - This creates new descriptor for a namespace
440 /// with the specified parent scope.
441 /// @param Scope Namespace scope
442 /// @param Name Name of this namespace
443 /// @param File Source file
444 /// @param LineNo Line number
445 DINameSpace createNameSpace(DIDescriptor Scope, StringRef Name,
446 DIFile File, unsigned LineNo);
449 /// createLexicalBlock - This creates a descriptor for a lexical block
450 /// with the specified parent context.
451 /// @param Scope Parent lexical scope.
452 /// @param File Source file
453 /// @param Line Line number
454 /// @param Col Column number
455 DILexicalBlock createLexicalBlock(DIDescriptor Scope, DIFile File,
456 unsigned Line, unsigned Col);
458 /// insertDeclare - Insert a new llvm.dbg.declare intrinsic call.
459 /// @param Storage llvm::Value of the variable
460 /// @param VarInfo Variable's debug info descriptor.
461 /// @param InsertAtEnd Location for the new intrinsic.
462 Instruction *insertDeclare(llvm::Value *Storage, DIVariable VarInfo,
463 BasicBlock *InsertAtEnd);
465 /// insertDeclare - Insert a new llvm.dbg.declare intrinsic call.
466 /// @param Storage llvm::Value of the variable
467 /// @param VarInfo Variable's debug info descriptor.
468 /// @param InsertBefore Location for the new intrinsic.
469 Instruction *insertDeclare(llvm::Value *Storage, DIVariable VarInfo,
470 Instruction *InsertBefore);
473 /// insertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
474 /// @param Val llvm::Value of the variable
475 /// @param Offset Offset
476 /// @param VarInfo Variable's debug info descriptor.
477 /// @param InsertAtEnd Location for the new intrinsic.
478 Instruction *insertDbgValueIntrinsic(llvm::Value *Val, uint64_t Offset,
480 BasicBlock *InsertAtEnd);
482 /// insertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
483 /// @param Val llvm::Value of the variable
484 /// @param Offset Offset
485 /// @param VarInfo Variable's debug info descriptor.
486 /// @param InsertBefore Location for the new intrinsic.
487 Instruction *insertDbgValueIntrinsic(llvm::Value *Val, uint64_t Offset,
489 Instruction *InsertBefore);
492 } // end namespace llvm