1 //===--- DIBuilder.cpp - Debug Information Builder ------------------------===//
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 implements the DIBuilder.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/Analysis/DIBuilder.h"
15 #include "llvm/Analysis/DebugInfo.h"
16 #include "llvm/Constants.h"
17 #include "llvm/IntrinsicInst.h"
18 #include "llvm/Module.h"
19 #include "llvm/ADT/STLExtras.h"
20 #include "llvm/Support/Dwarf.h"
23 using namespace llvm::dwarf;
25 static Constant *GetTagConstant(LLVMContext &VMContext, unsigned Tag) {
26 assert((Tag & LLVMDebugVersionMask) == 0 &&
27 "Tag too large for debug encoding!");
28 return ConstantInt::get(Type::getInt32Ty(VMContext), Tag | LLVMDebugVersion);
31 DIBuilder::DIBuilder(Module &m)
32 : M(m), VMContext(M.getContext()), TheCU(0), TempEnumTypes(0),
33 TempRetainTypes(0), TempSubprograms(0), TempGVs(0), DeclareFn(0), ValueFn(0)
36 /// finalize - Construct any deferred debug info descriptors.
37 void DIBuilder::finalize() {
38 DIArray Enums = getOrCreateArray(AllEnumTypes);
39 DIType(TempEnumTypes).replaceAllUsesWith(Enums);
41 DIArray RetainTypes = getOrCreateArray(AllRetainTypes);
42 DIType(TempRetainTypes).replaceAllUsesWith(RetainTypes);
44 DIArray SPs = getOrCreateArray(AllSubprograms);
45 DIType(TempSubprograms).replaceAllUsesWith(SPs);
47 DIArray GVs = getOrCreateArray(AllGVs);
48 DIType(TempGVs).replaceAllUsesWith(GVs);
51 /// getNonCompileUnitScope - If N is compile unit return NULL otherwise return N.
52 static MDNode *getNonCompileUnitScope(MDNode *N) {
53 if (DIDescriptor(N).isCompileUnit())
58 /// createCompileUnit - A CompileUnit provides an anchor for all debugging
59 /// information generated during this instance of compilation.
60 void DIBuilder::createCompileUnit(unsigned Lang, StringRef Filename,
61 StringRef Directory, StringRef Producer,
62 bool isOptimized, StringRef Flags,
63 unsigned RunTimeVer) {
64 Value *TElts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
65 TempEnumTypes = MDNode::getTemporary(VMContext, TElts);
66 Value *THElts[] = { TempEnumTypes };
67 MDNode *EnumHolder = MDNode::get(VMContext, THElts);
69 TempRetainTypes = MDNode::getTemporary(VMContext, TElts);
70 Value *TRElts[] = { TempRetainTypes };
71 MDNode *RetainHolder = MDNode::get(VMContext, TRElts);
73 TempSubprograms = MDNode::getTemporary(VMContext, TElts);
74 Value *TSElts[] = { TempSubprograms };
75 MDNode *SPHolder = MDNode::get(VMContext, TSElts);
77 TempGVs = MDNode::getTemporary(VMContext, TElts);
78 Value *TVElts[] = { TempGVs };
79 MDNode *GVHolder = MDNode::get(VMContext, TVElts);
82 GetTagConstant(VMContext, dwarf::DW_TAG_compile_unit),
83 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
84 ConstantInt::get(Type::getInt32Ty(VMContext), Lang),
85 MDString::get(VMContext, Filename),
86 MDString::get(VMContext, Directory),
87 MDString::get(VMContext, Producer),
88 // Deprecate isMain field.
89 ConstantInt::get(Type::getInt1Ty(VMContext), true), // isMain
90 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
91 MDString::get(VMContext, Flags),
92 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeVer),
98 TheCU = DICompileUnit(MDNode::get(VMContext, Elts));
100 // Create a named metadata so that it is easier to find cu in a module.
101 NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.cu");
102 NMD->addOperand(TheCU);
105 /// createFile - Create a file descriptor to hold debugging information
107 DIFile DIBuilder::createFile(StringRef Filename, StringRef Directory) {
108 assert(TheCU && "Unable to create DW_TAG_file_type without CompileUnit");
110 GetTagConstant(VMContext, dwarf::DW_TAG_file_type),
111 MDString::get(VMContext, Filename),
112 MDString::get(VMContext, Directory),
115 return DIFile(MDNode::get(VMContext, Elts));
118 /// createEnumerator - Create a single enumerator value.
119 DIEnumerator DIBuilder::createEnumerator(StringRef Name, uint64_t Val) {
121 GetTagConstant(VMContext, dwarf::DW_TAG_enumerator),
122 MDString::get(VMContext, Name),
123 ConstantInt::get(Type::getInt64Ty(VMContext), Val)
125 return DIEnumerator(MDNode::get(VMContext, Elts));
128 /// createBasicType - Create debugging information entry for a basic
129 /// type, e.g 'char'.
130 DIType DIBuilder::createBasicType(StringRef Name, uint64_t SizeInBits,
131 uint64_t AlignInBits,
133 // Basic types are encoded in DIBasicType format. Line number, filename,
134 // offset and flags are always empty here.
136 GetTagConstant(VMContext, dwarf::DW_TAG_base_type),
138 MDString::get(VMContext, Name),
140 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
141 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
142 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
143 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
144 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags;
145 ConstantInt::get(Type::getInt32Ty(VMContext), Encoding)
147 return DIType(MDNode::get(VMContext, Elts));
150 /// createQaulifiedType - Create debugging information entry for a qualified
151 /// type, e.g. 'const int'.
152 DIType DIBuilder::createQualifiedType(unsigned Tag, DIType FromTy) {
153 // Qualified types are encoded in DIDerivedType format.
155 GetTagConstant(VMContext, Tag),
157 MDString::get(VMContext, StringRef()), // Empty name.
159 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
160 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
161 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
162 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
163 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
166 return DIType(MDNode::get(VMContext, Elts));
169 /// createPointerType - Create debugging information entry for a pointer.
170 DIType DIBuilder::createPointerType(DIType PointeeTy, uint64_t SizeInBits,
171 uint64_t AlignInBits, StringRef Name) {
172 // Pointer types are encoded in DIDerivedType format.
174 GetTagConstant(VMContext, dwarf::DW_TAG_pointer_type),
176 MDString::get(VMContext, Name),
178 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
179 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
180 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
181 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
182 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
185 return DIType(MDNode::get(VMContext, Elts));
188 /// createReferenceType - Create debugging information entry for a reference.
189 DIType DIBuilder::createReferenceType(DIType RTy) {
190 // References are encoded in DIDerivedType format.
192 GetTagConstant(VMContext, dwarf::DW_TAG_reference_type),
196 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
197 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
198 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
199 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
200 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
203 return DIType(MDNode::get(VMContext, Elts));
206 /// createTypedef - Create debugging information entry for a typedef.
207 DIType DIBuilder::createTypedef(DIType Ty, StringRef Name, DIFile File,
208 unsigned LineNo, DIDescriptor Context) {
209 // typedefs are encoded in DIDerivedType format.
210 assert(Ty.Verify() && "Invalid typedef type!");
212 GetTagConstant(VMContext, dwarf::DW_TAG_typedef),
213 getNonCompileUnitScope(Context),
214 MDString::get(VMContext, Name),
216 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
217 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
218 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
219 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
220 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
223 return DIType(MDNode::get(VMContext, Elts));
226 /// createFriend - Create debugging information entry for a 'friend'.
227 DIType DIBuilder::createFriend(DIType Ty, DIType FriendTy) {
228 // typedefs are encoded in DIDerivedType format.
229 assert(Ty.Verify() && "Invalid type!");
230 assert(FriendTy.Verify() && "Invalid friend type!");
232 GetTagConstant(VMContext, dwarf::DW_TAG_friend),
236 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
237 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
238 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
239 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
240 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
243 return DIType(MDNode::get(VMContext, Elts));
246 /// createInheritance - Create debugging information entry to establish
247 /// inheritnace relationship between two types.
248 DIType DIBuilder::createInheritance(DIType Ty, DIType BaseTy,
249 uint64_t BaseOffset, unsigned Flags) {
250 // TAG_inheritance is encoded in DIDerivedType format.
252 GetTagConstant(VMContext, dwarf::DW_TAG_inheritance),
256 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
257 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
258 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
259 ConstantInt::get(Type::getInt64Ty(VMContext), BaseOffset),
260 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
263 return DIType(MDNode::get(VMContext, Elts));
266 /// createMemberType - Create debugging information entry for a member.
267 DIType DIBuilder::createMemberType(DIDescriptor Scope, StringRef Name,
268 DIFile File, unsigned LineNumber,
269 uint64_t SizeInBits, uint64_t AlignInBits,
270 uint64_t OffsetInBits, unsigned Flags,
272 // TAG_member is encoded in DIDerivedType format.
274 GetTagConstant(VMContext, dwarf::DW_TAG_member),
275 getNonCompileUnitScope(Scope),
276 MDString::get(VMContext, Name),
278 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
279 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
280 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
281 ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
282 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
285 return DIType(MDNode::get(VMContext, Elts));
288 /// createObjCIVar - Create debugging information entry for Objective-C
289 /// instance variable.
290 DIType DIBuilder::createObjCIVar(StringRef Name,
291 DIFile File, unsigned LineNumber,
292 uint64_t SizeInBits, uint64_t AlignInBits,
293 uint64_t OffsetInBits, unsigned Flags,
294 DIType Ty, StringRef PropertyName,
295 StringRef GetterName, StringRef SetterName,
296 unsigned PropertyAttributes) {
297 // TAG_member is encoded in DIDerivedType format.
299 GetTagConstant(VMContext, dwarf::DW_TAG_member),
300 getNonCompileUnitScope(File),
301 MDString::get(VMContext, Name),
303 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
304 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
305 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
306 ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
307 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
309 MDString::get(VMContext, PropertyName),
310 MDString::get(VMContext, GetterName),
311 MDString::get(VMContext, SetterName),
312 ConstantInt::get(Type::getInt32Ty(VMContext), PropertyAttributes)
314 return DIType(MDNode::get(VMContext, Elts));
317 /// createClassType - Create debugging information entry for a class.
318 DIType DIBuilder::createClassType(DIDescriptor Context, StringRef Name,
319 DIFile File, unsigned LineNumber,
320 uint64_t SizeInBits, uint64_t AlignInBits,
321 uint64_t OffsetInBits, unsigned Flags,
322 DIType DerivedFrom, DIArray Elements,
323 MDNode *VTableHoder, MDNode *TemplateParams) {
324 // TAG_class_type is encoded in DICompositeType format.
326 GetTagConstant(VMContext, dwarf::DW_TAG_class_type),
327 getNonCompileUnitScope(Context),
328 MDString::get(VMContext, Name),
330 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
331 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
332 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
333 ConstantInt::get(Type::getInt32Ty(VMContext), OffsetInBits),
334 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
337 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
341 return DIType(MDNode::get(VMContext, Elts));
344 /// createTemplateTypeParameter - Create debugging information for template
346 DITemplateTypeParameter
347 DIBuilder::createTemplateTypeParameter(DIDescriptor Context, StringRef Name,
348 DIType Ty, MDNode *File, unsigned LineNo,
351 GetTagConstant(VMContext, dwarf::DW_TAG_template_type_parameter),
352 getNonCompileUnitScope(Context),
353 MDString::get(VMContext, Name),
356 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
357 ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo)
359 return DITemplateTypeParameter(MDNode::get(VMContext, Elts));
362 /// createTemplateValueParameter - Create debugging information for template
364 DITemplateValueParameter
365 DIBuilder::createTemplateValueParameter(DIDescriptor Context, StringRef Name,
366 DIType Ty, uint64_t Val,
367 MDNode *File, unsigned LineNo,
370 GetTagConstant(VMContext, dwarf::DW_TAG_template_value_parameter),
371 getNonCompileUnitScope(Context),
372 MDString::get(VMContext, Name),
374 ConstantInt::get(Type::getInt64Ty(VMContext), Val),
376 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
377 ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo)
379 return DITemplateValueParameter(MDNode::get(VMContext, Elts));
382 /// createStructType - Create debugging information entry for a struct.
383 DIType DIBuilder::createStructType(DIDescriptor Context, StringRef Name,
384 DIFile File, unsigned LineNumber,
385 uint64_t SizeInBits, uint64_t AlignInBits,
386 unsigned Flags, DIArray Elements,
387 unsigned RunTimeLang) {
388 // TAG_structure_type is encoded in DICompositeType format.
390 GetTagConstant(VMContext, dwarf::DW_TAG_structure_type),
391 getNonCompileUnitScope(Context),
392 MDString::get(VMContext, Name),
394 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
395 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
396 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
397 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
398 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
399 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
401 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
402 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
404 return DIType(MDNode::get(VMContext, Elts));
407 /// createUnionType - Create debugging information entry for an union.
408 DIType DIBuilder::createUnionType(DIDescriptor Scope, StringRef Name,
410 unsigned LineNumber, uint64_t SizeInBits,
411 uint64_t AlignInBits, unsigned Flags,
412 DIArray Elements, unsigned RunTimeLang) {
413 // TAG_union_type is encoded in DICompositeType format.
415 GetTagConstant(VMContext, dwarf::DW_TAG_union_type),
416 getNonCompileUnitScope(Scope),
417 MDString::get(VMContext, Name),
419 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
420 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
421 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
422 ConstantInt::get(Type::getInt64Ty(VMContext), 0),
423 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
424 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
426 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
427 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
429 return DIType(MDNode::get(VMContext, Elts));
432 /// createSubroutineType - Create subroutine type.
433 DIType DIBuilder::createSubroutineType(DIFile File, DIArray ParameterTypes) {
434 // TAG_subroutine_type is encoded in DICompositeType format.
436 GetTagConstant(VMContext, dwarf::DW_TAG_subroutine_type),
437 getNonCompileUnitScope(File),
438 MDString::get(VMContext, ""),
440 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
441 ConstantInt::get(Type::getInt64Ty(VMContext), 0),
442 ConstantInt::get(Type::getInt64Ty(VMContext), 0),
443 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
444 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
445 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
447 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
448 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
450 return DIType(MDNode::get(VMContext, Elts));
453 /// createEnumerationType - Create debugging information entry for an
455 DIType DIBuilder::createEnumerationType(DIDescriptor Scope, StringRef Name,
456 DIFile File, unsigned LineNumber,
458 uint64_t AlignInBits, DIArray Elements) {
459 // TAG_enumeration_type is encoded in DICompositeType format.
461 GetTagConstant(VMContext, dwarf::DW_TAG_enumeration_type),
462 getNonCompileUnitScope(Scope),
463 MDString::get(VMContext, Name),
465 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
466 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
467 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
468 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
469 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
470 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
472 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
473 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
475 MDNode *Node = MDNode::get(VMContext, Elts);
476 AllEnumTypes.push_back(Node);
480 /// createArrayType - Create debugging information entry for an array.
481 DIType DIBuilder::createArrayType(uint64_t Size, uint64_t AlignInBits,
482 DIType Ty, DIArray Subscripts) {
483 // TAG_array_type is encoded in DICompositeType format.
485 GetTagConstant(VMContext, dwarf::DW_TAG_array_type),
487 MDString::get(VMContext, ""),
489 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
490 ConstantInt::get(Type::getInt64Ty(VMContext), Size),
491 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
492 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
493 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
496 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
497 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
499 return DIType(MDNode::get(VMContext, Elts));
502 /// createVectorType - Create debugging information entry for a vector.
503 DIType DIBuilder::createVectorType(uint64_t Size, uint64_t AlignInBits,
504 DIType Ty, DIArray Subscripts) {
505 // TAG_vector_type is encoded in DICompositeType format.
507 GetTagConstant(VMContext, dwarf::DW_TAG_vector_type),
509 MDString::get(VMContext, ""),
511 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
512 ConstantInt::get(Type::getInt64Ty(VMContext), Size),
513 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
514 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
515 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
518 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
519 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
521 return DIType(MDNode::get(VMContext, Elts));
524 /// createArtificialType - Create a new DIType with "artificial" flag set.
525 DIType DIBuilder::createArtificialType(DIType Ty) {
526 if (Ty.isArtificial())
529 SmallVector<Value *, 9> Elts;
531 assert (N && "Unexpected input DIType!");
532 for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
533 if (Value *V = N->getOperand(i))
536 Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext)));
539 unsigned CurFlags = Ty.getFlags();
540 CurFlags = CurFlags | DIType::FlagArtificial;
542 // Flags are stored at this slot.
543 Elts[8] = ConstantInt::get(Type::getInt32Ty(VMContext), CurFlags);
545 return DIType(MDNode::get(VMContext, Elts));
548 /// retainType - Retain DIType in a module even if it is not referenced
549 /// through debug info anchors.
550 void DIBuilder::retainType(DIType T) {
551 AllRetainTypes.push_back(T);
554 /// createUnspecifiedParameter - Create unspeicified type descriptor
555 /// for the subroutine type.
556 DIDescriptor DIBuilder::createUnspecifiedParameter() {
558 GetTagConstant(VMContext, dwarf::DW_TAG_unspecified_parameters)
560 return DIDescriptor(MDNode::get(VMContext, Elts));
563 /// createTemporaryType - Create a temporary forward-declared type.
564 DIType DIBuilder::createTemporaryType() {
565 // Give the temporary MDNode a tag. It doesn't matter what tag we
566 // use here as long as DIType accepts it.
567 Value *Elts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
568 MDNode *Node = MDNode::getTemporary(VMContext, Elts);
572 /// createTemporaryType - Create a temporary forward-declared type.
573 DIType DIBuilder::createTemporaryType(DIFile F) {
574 // Give the temporary MDNode a tag. It doesn't matter what tag we
575 // use here as long as DIType accepts it.
577 GetTagConstant(VMContext, DW_TAG_base_type),
582 MDNode *Node = MDNode::getTemporary(VMContext, Elts);
586 /// getOrCreateArray - Get a DIArray, create one if required.
587 DIArray DIBuilder::getOrCreateArray(ArrayRef<Value *> Elements) {
588 if (Elements.empty()) {
589 Value *Null = llvm::Constant::getNullValue(Type::getInt32Ty(VMContext));
590 return DIArray(MDNode::get(VMContext, Null));
592 return DIArray(MDNode::get(VMContext, Elements));
595 /// getOrCreateSubrange - Create a descriptor for a value range. This
596 /// implicitly uniques the values returned.
597 DISubrange DIBuilder::getOrCreateSubrange(int64_t Lo, int64_t Hi) {
599 GetTagConstant(VMContext, dwarf::DW_TAG_subrange_type),
600 ConstantInt::get(Type::getInt64Ty(VMContext), Lo),
601 ConstantInt::get(Type::getInt64Ty(VMContext), Hi)
604 return DISubrange(MDNode::get(VMContext, Elts));
607 /// createGlobalVariable - Create a new descriptor for the specified global.
608 DIGlobalVariable DIBuilder::
609 createGlobalVariable(StringRef Name, DIFile F, unsigned LineNumber,
610 DIType Ty, bool isLocalToUnit, llvm::Value *Val) {
612 GetTagConstant(VMContext, dwarf::DW_TAG_variable),
613 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
615 MDString::get(VMContext, Name),
616 MDString::get(VMContext, Name),
617 MDString::get(VMContext, Name),
619 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
621 ConstantInt::get(Type::getInt32Ty(VMContext), isLocalToUnit),
622 ConstantInt::get(Type::getInt32Ty(VMContext), 1), /* isDefinition*/
625 MDNode *Node = MDNode::get(VMContext, Elts);
626 AllGVs.push_back(Node);
627 return DIGlobalVariable(Node);
630 /// createStaticVariable - Create a new descriptor for the specified static
632 DIGlobalVariable DIBuilder::
633 createStaticVariable(DIDescriptor Context, StringRef Name,
634 StringRef LinkageName, DIFile F, unsigned LineNumber,
635 DIType Ty, bool isLocalToUnit, llvm::Value *Val) {
637 GetTagConstant(VMContext, dwarf::DW_TAG_variable),
638 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
639 getNonCompileUnitScope(Context),
640 MDString::get(VMContext, Name),
641 MDString::get(VMContext, Name),
642 MDString::get(VMContext, LinkageName),
644 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
646 ConstantInt::get(Type::getInt32Ty(VMContext), isLocalToUnit),
647 ConstantInt::get(Type::getInt32Ty(VMContext), 1), /* isDefinition*/
650 MDNode *Node = MDNode::get(VMContext, Elts);
651 AllGVs.push_back(Node);
652 return DIGlobalVariable(Node);
655 /// createVariable - Create a new descriptor for the specified variable.
656 DIVariable DIBuilder::createLocalVariable(unsigned Tag, DIDescriptor Scope,
657 StringRef Name, DIFile File,
658 unsigned LineNo, DIType Ty,
659 bool AlwaysPreserve, unsigned Flags,
662 GetTagConstant(VMContext, Tag),
663 getNonCompileUnitScope(Scope),
664 MDString::get(VMContext, Name),
666 ConstantInt::get(Type::getInt32Ty(VMContext), (LineNo | (ArgNo << 24))),
668 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
669 Constant::getNullValue(Type::getInt32Ty(VMContext)),
671 MDNode *Node = MDNode::get(VMContext, Elts);
672 if (AlwaysPreserve) {
673 // The optimizer may remove local variable. If there is an interest
674 // to preserve variable info in such situation then stash it in a
676 DISubprogram Fn(getDISubprogram(Scope));
677 StringRef FName = "fn";
678 if (Fn.getFunction())
679 FName = Fn.getFunction()->getName();
681 if (FName.startswith(StringRef(&One, 1)))
682 FName = FName.substr(1);
683 NamedMDNode *FnLocals = getOrInsertFnSpecificMDNode(M, FName);
684 FnLocals->addOperand(Node);
686 return DIVariable(Node);
689 /// createComplexVariable - Create a new descriptor for the specified variable
690 /// which has a complex address expression for its address.
691 DIVariable DIBuilder::createComplexVariable(unsigned Tag, DIDescriptor Scope,
692 StringRef Name, DIFile F,
694 DIType Ty, ArrayRef<Value *> Addr,
696 SmallVector<Value *, 15> Elts;
697 Elts.push_back(GetTagConstant(VMContext, Tag));
698 Elts.push_back(getNonCompileUnitScope(Scope)),
699 Elts.push_back(MDString::get(VMContext, Name));
701 Elts.push_back(ConstantInt::get(Type::getInt32Ty(VMContext), (LineNo | (ArgNo << 24))));
703 Elts.push_back(llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)));
704 Elts.push_back(llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)));
705 Elts.append(Addr.begin(), Addr.end());
707 return DIVariable(MDNode::get(VMContext, Elts));
710 /// createFunction - Create a new descriptor for the specified function.
711 DISubprogram DIBuilder::createFunction(DIDescriptor Context,
713 StringRef LinkageName,
714 DIFile File, unsigned LineNo,
716 bool isLocalToUnit, bool isDefinition,
717 unsigned Flags, bool isOptimized,
722 GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
723 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
724 getNonCompileUnitScope(Context),
725 MDString::get(VMContext, Name),
726 MDString::get(VMContext, Name),
727 MDString::get(VMContext, LinkageName),
729 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
731 ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
732 ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
733 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
734 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
735 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
736 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
737 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
742 MDNode *Node = MDNode::get(VMContext, Elts);
744 // Create a named metadata so that we do not lose this mdnode.
745 AllSubprograms.push_back(Node);
746 return DISubprogram(Node);
749 /// createMethod - Create a new descriptor for the specified C++ method.
750 DISubprogram DIBuilder::createMethod(DIDescriptor Context,
752 StringRef LinkageName,
754 unsigned LineNo, DIType Ty,
757 unsigned VK, unsigned VIndex,
758 MDNode *VTableHolder,
764 GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
765 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
766 getNonCompileUnitScope(Context),
767 MDString::get(VMContext, Name),
768 MDString::get(VMContext, Name),
769 MDString::get(VMContext, LinkageName),
771 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
773 ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
774 ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
775 ConstantInt::get(Type::getInt32Ty(VMContext), (unsigned)VK),
776 ConstantInt::get(Type::getInt32Ty(VMContext), VIndex),
778 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
779 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
783 MDNode *Node = MDNode::get(VMContext, Elts);
784 return DISubprogram(Node);
787 /// createNameSpace - This creates new descriptor for a namespace
788 /// with the specified parent scope.
789 DINameSpace DIBuilder::createNameSpace(DIDescriptor Scope, StringRef Name,
790 DIFile File, unsigned LineNo) {
792 GetTagConstant(VMContext, dwarf::DW_TAG_namespace),
793 getNonCompileUnitScope(Scope),
794 MDString::get(VMContext, Name),
796 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo)
798 return DINameSpace(MDNode::get(VMContext, Elts));
801 DILexicalBlock DIBuilder::createLexicalBlock(DIDescriptor Scope, DIFile File,
802 unsigned Line, unsigned Col) {
803 // Defeat MDNode uniqing for lexical blocks by using unique id.
804 static unsigned int unique_id = 0;
806 GetTagConstant(VMContext, dwarf::DW_TAG_lexical_block),
807 getNonCompileUnitScope(Scope),
808 ConstantInt::get(Type::getInt32Ty(VMContext), Line),
809 ConstantInt::get(Type::getInt32Ty(VMContext), Col),
811 ConstantInt::get(Type::getInt32Ty(VMContext), unique_id++)
813 return DILexicalBlock(MDNode::get(VMContext, Elts));
816 /// insertDeclare - Insert a new llvm.dbg.declare intrinsic call.
817 Instruction *DIBuilder::insertDeclare(Value *Storage, DIVariable VarInfo,
818 Instruction *InsertBefore) {
819 assert(Storage && "no storage passed to dbg.declare");
820 assert(VarInfo.Verify() && "empty DIVariable passed to dbg.declare");
822 DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
824 Value *Args[] = { MDNode::get(Storage->getContext(), Storage), VarInfo };
825 return CallInst::Create(DeclareFn, Args, "", InsertBefore);
828 /// insertDeclare - Insert a new llvm.dbg.declare intrinsic call.
829 Instruction *DIBuilder::insertDeclare(Value *Storage, DIVariable VarInfo,
830 BasicBlock *InsertAtEnd) {
831 assert(Storage && "no storage passed to dbg.declare");
832 assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.declare");
834 DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
836 Value *Args[] = { MDNode::get(Storage->getContext(), Storage), VarInfo };
838 // If this block already has a terminator then insert this intrinsic
839 // before the terminator.
840 if (TerminatorInst *T = InsertAtEnd->getTerminator())
841 return CallInst::Create(DeclareFn, Args, "", T);
843 return CallInst::Create(DeclareFn, Args, "", InsertAtEnd);
846 /// insertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
847 Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V, uint64_t Offset,
849 Instruction *InsertBefore) {
850 assert(V && "no value passed to dbg.value");
851 assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.value");
853 ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
855 Value *Args[] = { MDNode::get(V->getContext(), V),
856 ConstantInt::get(Type::getInt64Ty(V->getContext()), Offset),
858 return CallInst::Create(ValueFn, Args, "", InsertBefore);
861 /// insertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
862 Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V, uint64_t Offset,
864 BasicBlock *InsertAtEnd) {
865 assert(V && "no value passed to dbg.value");
866 assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.value");
868 ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
870 Value *Args[] = { MDNode::get(V->getContext(), V),
871 ConstantInt::get(Type::getInt64Ty(V->getContext()), Offset),
873 return CallInst::Create(ValueFn, Args, "", InsertAtEnd);