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);
46 for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i) {
47 DISubprogram SP(SPs.getElement(i));
48 if (NamedMDNode *NMD = getFnSpecificMDNode(M, SP)) {
49 SmallVector<Value *, 4> Variables;
50 for (unsigned ii = 0, ee = NMD->getNumOperands(); ii != ee; ++ii)
51 Variables.push_back(NMD->getOperand(ii));
52 if (MDNode *Temp = SP.getVariablesNodes()) {
53 DIArray AV = getOrCreateArray(Variables);
54 DIType(Temp).replaceAllUsesWith(AV);
56 NMD->eraseFromParent();
60 DIArray GVs = getOrCreateArray(AllGVs);
61 DIType(TempGVs).replaceAllUsesWith(GVs);
64 /// getNonCompileUnitScope - If N is compile unit return NULL otherwise return N.
65 static MDNode *getNonCompileUnitScope(MDNode *N) {
66 if (DIDescriptor(N).isCompileUnit())
71 /// createCompileUnit - A CompileUnit provides an anchor for all debugging
72 /// information generated during this instance of compilation.
73 void DIBuilder::createCompileUnit(unsigned Lang, StringRef Filename,
74 StringRef Directory, StringRef Producer,
75 bool isOptimized, StringRef Flags,
76 unsigned RunTimeVer) {
77 Value *TElts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
78 TempEnumTypes = MDNode::getTemporary(VMContext, TElts);
79 Value *THElts[] = { TempEnumTypes };
80 MDNode *EnumHolder = MDNode::get(VMContext, THElts);
82 TempRetainTypes = MDNode::getTemporary(VMContext, TElts);
83 Value *TRElts[] = { TempRetainTypes };
84 MDNode *RetainHolder = MDNode::get(VMContext, TRElts);
86 TempSubprograms = MDNode::getTemporary(VMContext, TElts);
87 Value *TSElts[] = { TempSubprograms };
88 MDNode *SPHolder = MDNode::get(VMContext, TSElts);
90 TempGVs = MDNode::getTemporary(VMContext, TElts);
91 Value *TVElts[] = { TempGVs };
92 MDNode *GVHolder = MDNode::get(VMContext, TVElts);
95 GetTagConstant(VMContext, dwarf::DW_TAG_compile_unit),
96 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
97 ConstantInt::get(Type::getInt32Ty(VMContext), Lang),
98 MDString::get(VMContext, Filename),
99 MDString::get(VMContext, Directory),
100 MDString::get(VMContext, Producer),
101 // Deprecate isMain field.
102 ConstantInt::get(Type::getInt1Ty(VMContext), true), // isMain
103 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
104 MDString::get(VMContext, Flags),
105 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeVer),
111 TheCU = DICompileUnit(MDNode::get(VMContext, Elts));
113 // Create a named metadata so that it is easier to find cu in a module.
114 NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.cu");
115 NMD->addOperand(TheCU);
118 /// createFile - Create a file descriptor to hold debugging information
120 DIFile DIBuilder::createFile(StringRef Filename, StringRef Directory) {
121 assert(TheCU && "Unable to create DW_TAG_file_type without CompileUnit");
123 GetTagConstant(VMContext, dwarf::DW_TAG_file_type),
124 MDString::get(VMContext, Filename),
125 MDString::get(VMContext, Directory),
128 return DIFile(MDNode::get(VMContext, Elts));
131 /// createEnumerator - Create a single enumerator value.
132 DIEnumerator DIBuilder::createEnumerator(StringRef Name, uint64_t Val) {
134 GetTagConstant(VMContext, dwarf::DW_TAG_enumerator),
135 MDString::get(VMContext, Name),
136 ConstantInt::get(Type::getInt64Ty(VMContext), Val)
138 return DIEnumerator(MDNode::get(VMContext, Elts));
141 /// createBasicType - Create debugging information entry for a basic
142 /// type, e.g 'char'.
143 DIType DIBuilder::createBasicType(StringRef Name, uint64_t SizeInBits,
144 uint64_t AlignInBits,
146 // Basic types are encoded in DIBasicType format. Line number, filename,
147 // offset and flags are always empty here.
149 GetTagConstant(VMContext, dwarf::DW_TAG_base_type),
151 MDString::get(VMContext, Name),
153 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
154 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
155 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
156 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
157 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags;
158 ConstantInt::get(Type::getInt32Ty(VMContext), Encoding)
160 return DIType(MDNode::get(VMContext, Elts));
163 /// createQaulifiedType - Create debugging information entry for a qualified
164 /// type, e.g. 'const int'.
165 DIType DIBuilder::createQualifiedType(unsigned Tag, DIType FromTy) {
166 // Qualified types are encoded in DIDerivedType format.
168 GetTagConstant(VMContext, Tag),
170 MDString::get(VMContext, StringRef()), // Empty name.
172 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
173 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
174 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
175 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
176 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
179 return DIType(MDNode::get(VMContext, Elts));
182 /// createPointerType - Create debugging information entry for a pointer.
183 DIType DIBuilder::createPointerType(DIType PointeeTy, uint64_t SizeInBits,
184 uint64_t AlignInBits, StringRef Name) {
185 // Pointer types are encoded in DIDerivedType format.
187 GetTagConstant(VMContext, dwarf::DW_TAG_pointer_type),
189 MDString::get(VMContext, Name),
191 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
192 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
193 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
194 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
195 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
198 return DIType(MDNode::get(VMContext, Elts));
201 /// createReferenceType - Create debugging information entry for a reference.
202 DIType DIBuilder::createReferenceType(DIType RTy) {
203 // References are encoded in DIDerivedType format.
205 GetTagConstant(VMContext, dwarf::DW_TAG_reference_type),
209 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
210 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
211 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
212 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
213 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
216 return DIType(MDNode::get(VMContext, Elts));
219 /// createTypedef - Create debugging information entry for a typedef.
220 DIType DIBuilder::createTypedef(DIType Ty, StringRef Name, DIFile File,
221 unsigned LineNo, DIDescriptor Context) {
222 // typedefs are encoded in DIDerivedType format.
223 assert(Ty.Verify() && "Invalid typedef type!");
225 GetTagConstant(VMContext, dwarf::DW_TAG_typedef),
226 getNonCompileUnitScope(Context),
227 MDString::get(VMContext, Name),
229 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
230 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
231 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
232 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
233 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
236 return DIType(MDNode::get(VMContext, Elts));
239 /// createFriend - Create debugging information entry for a 'friend'.
240 DIType DIBuilder::createFriend(DIType Ty, DIType FriendTy) {
241 // typedefs are encoded in DIDerivedType format.
242 assert(Ty.Verify() && "Invalid type!");
243 assert(FriendTy.Verify() && "Invalid friend type!");
245 GetTagConstant(VMContext, dwarf::DW_TAG_friend),
249 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
250 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
251 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
252 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
253 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
256 return DIType(MDNode::get(VMContext, Elts));
259 /// createInheritance - Create debugging information entry to establish
260 /// inheritnace relationship between two types.
261 DIType DIBuilder::createInheritance(DIType Ty, DIType BaseTy,
262 uint64_t BaseOffset, unsigned Flags) {
263 // TAG_inheritance is encoded in DIDerivedType format.
265 GetTagConstant(VMContext, dwarf::DW_TAG_inheritance),
269 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
270 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
271 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
272 ConstantInt::get(Type::getInt64Ty(VMContext), BaseOffset),
273 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
276 return DIType(MDNode::get(VMContext, Elts));
279 /// createMemberType - Create debugging information entry for a member.
280 DIType DIBuilder::createMemberType(DIDescriptor Scope, StringRef Name,
281 DIFile File, unsigned LineNumber,
282 uint64_t SizeInBits, uint64_t AlignInBits,
283 uint64_t OffsetInBits, unsigned Flags,
285 // TAG_member is encoded in DIDerivedType format.
287 GetTagConstant(VMContext, dwarf::DW_TAG_member),
288 getNonCompileUnitScope(Scope),
289 MDString::get(VMContext, Name),
291 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
292 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
293 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
294 ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
295 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
298 return DIType(MDNode::get(VMContext, Elts));
301 /// createObjCIVar - Create debugging information entry for Objective-C
302 /// instance variable.
303 DIType DIBuilder::createObjCIVar(StringRef Name,
304 DIFile File, unsigned LineNumber,
305 uint64_t SizeInBits, uint64_t AlignInBits,
306 uint64_t OffsetInBits, unsigned Flags,
307 DIType Ty, StringRef PropertyName,
308 StringRef GetterName, StringRef SetterName,
309 unsigned PropertyAttributes) {
310 // TAG_member is encoded in DIDerivedType format.
312 GetTagConstant(VMContext, dwarf::DW_TAG_member),
313 getNonCompileUnitScope(File),
314 MDString::get(VMContext, Name),
316 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
317 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
318 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
319 ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
320 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
322 MDString::get(VMContext, PropertyName),
323 MDString::get(VMContext, GetterName),
324 MDString::get(VMContext, SetterName),
325 ConstantInt::get(Type::getInt32Ty(VMContext), PropertyAttributes)
327 return DIType(MDNode::get(VMContext, Elts));
330 /// createClassType - Create debugging information entry for a class.
331 DIType DIBuilder::createClassType(DIDescriptor Context, StringRef Name,
332 DIFile File, unsigned LineNumber,
333 uint64_t SizeInBits, uint64_t AlignInBits,
334 uint64_t OffsetInBits, unsigned Flags,
335 DIType DerivedFrom, DIArray Elements,
336 MDNode *VTableHoder, MDNode *TemplateParams) {
337 // TAG_class_type is encoded in DICompositeType format.
339 GetTagConstant(VMContext, dwarf::DW_TAG_class_type),
340 getNonCompileUnitScope(Context),
341 MDString::get(VMContext, Name),
343 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
344 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
345 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
346 ConstantInt::get(Type::getInt32Ty(VMContext), OffsetInBits),
347 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
350 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
354 return DIType(MDNode::get(VMContext, Elts));
357 /// createTemplateTypeParameter - Create debugging information for template
359 DITemplateTypeParameter
360 DIBuilder::createTemplateTypeParameter(DIDescriptor Context, StringRef Name,
361 DIType Ty, MDNode *File, unsigned LineNo,
364 GetTagConstant(VMContext, dwarf::DW_TAG_template_type_parameter),
365 getNonCompileUnitScope(Context),
366 MDString::get(VMContext, Name),
369 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
370 ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo)
372 return DITemplateTypeParameter(MDNode::get(VMContext, Elts));
375 /// createTemplateValueParameter - Create debugging information for template
377 DITemplateValueParameter
378 DIBuilder::createTemplateValueParameter(DIDescriptor Context, StringRef Name,
379 DIType Ty, uint64_t Val,
380 MDNode *File, unsigned LineNo,
383 GetTagConstant(VMContext, dwarf::DW_TAG_template_value_parameter),
384 getNonCompileUnitScope(Context),
385 MDString::get(VMContext, Name),
387 ConstantInt::get(Type::getInt64Ty(VMContext), Val),
389 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
390 ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo)
392 return DITemplateValueParameter(MDNode::get(VMContext, Elts));
395 /// createStructType - Create debugging information entry for a struct.
396 DIType DIBuilder::createStructType(DIDescriptor Context, StringRef Name,
397 DIFile File, unsigned LineNumber,
398 uint64_t SizeInBits, uint64_t AlignInBits,
399 unsigned Flags, DIArray Elements,
400 unsigned RunTimeLang) {
401 // TAG_structure_type is encoded in DICompositeType format.
403 GetTagConstant(VMContext, dwarf::DW_TAG_structure_type),
404 getNonCompileUnitScope(Context),
405 MDString::get(VMContext, Name),
407 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
408 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
409 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
410 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
411 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
412 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
414 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
415 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
417 return DIType(MDNode::get(VMContext, Elts));
420 /// createUnionType - Create debugging information entry for an union.
421 DIType DIBuilder::createUnionType(DIDescriptor Scope, StringRef Name,
423 unsigned LineNumber, uint64_t SizeInBits,
424 uint64_t AlignInBits, unsigned Flags,
425 DIArray Elements, unsigned RunTimeLang) {
426 // TAG_union_type is encoded in DICompositeType format.
428 GetTagConstant(VMContext, dwarf::DW_TAG_union_type),
429 getNonCompileUnitScope(Scope),
430 MDString::get(VMContext, Name),
432 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
433 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
434 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
435 ConstantInt::get(Type::getInt64Ty(VMContext), 0),
436 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
437 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
439 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
440 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
442 return DIType(MDNode::get(VMContext, Elts));
445 /// createSubroutineType - Create subroutine type.
446 DIType DIBuilder::createSubroutineType(DIFile File, DIArray ParameterTypes) {
447 // TAG_subroutine_type is encoded in DICompositeType format.
449 GetTagConstant(VMContext, dwarf::DW_TAG_subroutine_type),
450 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
451 MDString::get(VMContext, ""),
452 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
453 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
454 ConstantInt::get(Type::getInt64Ty(VMContext), 0),
455 ConstantInt::get(Type::getInt64Ty(VMContext), 0),
456 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
457 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
458 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
460 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
461 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
463 return DIType(MDNode::get(VMContext, Elts));
466 /// createEnumerationType - Create debugging information entry for an
468 DIType DIBuilder::createEnumerationType(DIDescriptor Scope, StringRef Name,
469 DIFile File, unsigned LineNumber,
471 uint64_t AlignInBits, DIArray Elements) {
472 // TAG_enumeration_type is encoded in DICompositeType format.
474 GetTagConstant(VMContext, dwarf::DW_TAG_enumeration_type),
475 getNonCompileUnitScope(Scope),
476 MDString::get(VMContext, Name),
478 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
479 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
480 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
481 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
482 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
483 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
485 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
486 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
488 MDNode *Node = MDNode::get(VMContext, Elts);
489 AllEnumTypes.push_back(Node);
493 /// createArrayType - Create debugging information entry for an array.
494 DIType DIBuilder::createArrayType(uint64_t Size, uint64_t AlignInBits,
495 DIType Ty, DIArray Subscripts) {
496 // TAG_array_type is encoded in DICompositeType format.
498 GetTagConstant(VMContext, dwarf::DW_TAG_array_type),
500 MDString::get(VMContext, ""),
502 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
503 ConstantInt::get(Type::getInt64Ty(VMContext), Size),
504 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
505 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
506 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
509 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
510 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
512 return DIType(MDNode::get(VMContext, Elts));
515 /// createVectorType - Create debugging information entry for a vector.
516 DIType DIBuilder::createVectorType(uint64_t Size, uint64_t AlignInBits,
517 DIType Ty, DIArray Subscripts) {
518 // TAG_vector_type is encoded in DICompositeType format.
520 GetTagConstant(VMContext, dwarf::DW_TAG_vector_type),
522 MDString::get(VMContext, ""),
524 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
525 ConstantInt::get(Type::getInt64Ty(VMContext), Size),
526 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
527 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
528 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
531 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
532 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
534 return DIType(MDNode::get(VMContext, Elts));
537 /// createArtificialType - Create a new DIType with "artificial" flag set.
538 DIType DIBuilder::createArtificialType(DIType Ty) {
539 if (Ty.isArtificial())
542 SmallVector<Value *, 9> Elts;
544 assert (N && "Unexpected input DIType!");
545 for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
546 if (Value *V = N->getOperand(i))
549 Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext)));
552 unsigned CurFlags = Ty.getFlags();
553 CurFlags = CurFlags | DIType::FlagArtificial;
555 // Flags are stored at this slot.
556 Elts[8] = ConstantInt::get(Type::getInt32Ty(VMContext), CurFlags);
558 return DIType(MDNode::get(VMContext, Elts));
561 /// retainType - Retain DIType in a module even if it is not referenced
562 /// through debug info anchors.
563 void DIBuilder::retainType(DIType T) {
564 AllRetainTypes.push_back(T);
567 /// createUnspecifiedParameter - Create unspeicified type descriptor
568 /// for the subroutine type.
569 DIDescriptor DIBuilder::createUnspecifiedParameter() {
571 GetTagConstant(VMContext, dwarf::DW_TAG_unspecified_parameters)
573 return DIDescriptor(MDNode::get(VMContext, Elts));
576 /// createTemporaryType - Create a temporary forward-declared type.
577 DIType DIBuilder::createTemporaryType() {
578 // Give the temporary MDNode a tag. It doesn't matter what tag we
579 // use here as long as DIType accepts it.
580 Value *Elts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
581 MDNode *Node = MDNode::getTemporary(VMContext, Elts);
585 /// createTemporaryType - Create a temporary forward-declared type.
586 DIType DIBuilder::createTemporaryType(DIFile F) {
587 // Give the temporary MDNode a tag. It doesn't matter what tag we
588 // use here as long as DIType accepts it.
590 GetTagConstant(VMContext, DW_TAG_base_type),
595 MDNode *Node = MDNode::getTemporary(VMContext, Elts);
599 /// getOrCreateArray - Get a DIArray, create one if required.
600 DIArray DIBuilder::getOrCreateArray(ArrayRef<Value *> Elements) {
601 if (Elements.empty()) {
602 Value *Null = llvm::Constant::getNullValue(Type::getInt32Ty(VMContext));
603 return DIArray(MDNode::get(VMContext, Null));
605 return DIArray(MDNode::get(VMContext, Elements));
608 /// getOrCreateSubrange - Create a descriptor for a value range. This
609 /// implicitly uniques the values returned.
610 DISubrange DIBuilder::getOrCreateSubrange(int64_t Lo, int64_t Hi) {
612 GetTagConstant(VMContext, dwarf::DW_TAG_subrange_type),
613 ConstantInt::get(Type::getInt64Ty(VMContext), Lo),
614 ConstantInt::get(Type::getInt64Ty(VMContext), Hi)
617 return DISubrange(MDNode::get(VMContext, Elts));
620 /// createGlobalVariable - Create a new descriptor for the specified global.
621 DIGlobalVariable DIBuilder::
622 createGlobalVariable(StringRef Name, DIFile F, unsigned LineNumber,
623 DIType Ty, bool isLocalToUnit, llvm::Value *Val) {
625 GetTagConstant(VMContext, dwarf::DW_TAG_variable),
626 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
628 MDString::get(VMContext, Name),
629 MDString::get(VMContext, Name),
630 MDString::get(VMContext, Name),
632 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
634 ConstantInt::get(Type::getInt32Ty(VMContext), isLocalToUnit),
635 ConstantInt::get(Type::getInt32Ty(VMContext), 1), /* isDefinition*/
638 MDNode *Node = MDNode::get(VMContext, Elts);
639 AllGVs.push_back(Node);
640 return DIGlobalVariable(Node);
643 /// createStaticVariable - Create a new descriptor for the specified static
645 DIGlobalVariable DIBuilder::
646 createStaticVariable(DIDescriptor Context, StringRef Name,
647 StringRef LinkageName, DIFile F, unsigned LineNumber,
648 DIType Ty, bool isLocalToUnit, llvm::Value *Val) {
650 GetTagConstant(VMContext, dwarf::DW_TAG_variable),
651 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
652 getNonCompileUnitScope(Context),
653 MDString::get(VMContext, Name),
654 MDString::get(VMContext, Name),
655 MDString::get(VMContext, LinkageName),
657 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
659 ConstantInt::get(Type::getInt32Ty(VMContext), isLocalToUnit),
660 ConstantInt::get(Type::getInt32Ty(VMContext), 1), /* isDefinition*/
663 MDNode *Node = MDNode::get(VMContext, Elts);
664 AllGVs.push_back(Node);
665 return DIGlobalVariable(Node);
668 /// createVariable - Create a new descriptor for the specified variable.
669 DIVariable DIBuilder::createLocalVariable(unsigned Tag, DIDescriptor Scope,
670 StringRef Name, DIFile File,
671 unsigned LineNo, DIType Ty,
672 bool AlwaysPreserve, unsigned Flags,
675 GetTagConstant(VMContext, Tag),
676 getNonCompileUnitScope(Scope),
677 MDString::get(VMContext, Name),
679 ConstantInt::get(Type::getInt32Ty(VMContext), (LineNo | (ArgNo << 24))),
681 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
682 Constant::getNullValue(Type::getInt32Ty(VMContext)),
684 MDNode *Node = MDNode::get(VMContext, Elts);
685 if (AlwaysPreserve) {
686 // The optimizer may remove local variable. If there is an interest
687 // to preserve variable info in such situation then stash it in a
689 DISubprogram Fn(getDISubprogram(Scope));
690 NamedMDNode *FnLocals = getOrInsertFnSpecificMDNode(M, Fn);
691 FnLocals->addOperand(Node);
693 return DIVariable(Node);
696 /// createComplexVariable - Create a new descriptor for the specified variable
697 /// which has a complex address expression for its address.
698 DIVariable DIBuilder::createComplexVariable(unsigned Tag, DIDescriptor Scope,
699 StringRef Name, DIFile F,
701 DIType Ty, ArrayRef<Value *> Addr,
703 SmallVector<Value *, 15> Elts;
704 Elts.push_back(GetTagConstant(VMContext, Tag));
705 Elts.push_back(getNonCompileUnitScope(Scope)),
706 Elts.push_back(MDString::get(VMContext, Name));
708 Elts.push_back(ConstantInt::get(Type::getInt32Ty(VMContext), (LineNo | (ArgNo << 24))));
710 Elts.push_back(llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)));
711 Elts.push_back(llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)));
712 Elts.append(Addr.begin(), Addr.end());
714 return DIVariable(MDNode::get(VMContext, Elts));
717 /// createFunction - Create a new descriptor for the specified function.
718 DISubprogram DIBuilder::createFunction(DIDescriptor Context,
720 StringRef LinkageName,
721 DIFile File, unsigned LineNo,
723 bool isLocalToUnit, bool isDefinition,
724 unsigned Flags, bool isOptimized,
728 Value *TElts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
729 MDNode *Temp = MDNode::getTemporary(VMContext, TElts);
730 Value *TVElts[] = { Temp };
731 MDNode *THolder = MDNode::get(VMContext, TVElts);
734 GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
735 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
736 getNonCompileUnitScope(Context),
737 MDString::get(VMContext, Name),
738 MDString::get(VMContext, Name),
739 MDString::get(VMContext, LinkageName),
741 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
743 ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
744 ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
745 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
746 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
747 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
748 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
749 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
755 MDNode *Node = MDNode::get(VMContext, Elts);
757 // Create a named metadata so that we do not lose this mdnode.
758 AllSubprograms.push_back(Node);
759 return DISubprogram(Node);
762 /// createMethod - Create a new descriptor for the specified C++ method.
763 DISubprogram DIBuilder::createMethod(DIDescriptor Context,
765 StringRef LinkageName,
767 unsigned LineNo, DIType Ty,
770 unsigned VK, unsigned VIndex,
771 MDNode *VTableHolder,
776 Value *TElts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
777 MDNode *Temp = MDNode::getTemporary(VMContext, TElts);
778 Value *TVElts[] = { Temp };
779 MDNode *THolder = MDNode::get(VMContext, TVElts);
782 GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
783 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
784 getNonCompileUnitScope(Context),
785 MDString::get(VMContext, Name),
786 MDString::get(VMContext, Name),
787 MDString::get(VMContext, LinkageName),
789 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
791 ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
792 ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
793 ConstantInt::get(Type::getInt32Ty(VMContext), (unsigned)VK),
794 ConstantInt::get(Type::getInt32Ty(VMContext), VIndex),
796 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
797 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
800 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
803 MDNode *Node = MDNode::get(VMContext, Elts);
804 return DISubprogram(Node);
807 /// createNameSpace - This creates new descriptor for a namespace
808 /// with the specified parent scope.
809 DINameSpace DIBuilder::createNameSpace(DIDescriptor Scope, StringRef Name,
810 DIFile File, unsigned LineNo) {
812 GetTagConstant(VMContext, dwarf::DW_TAG_namespace),
813 getNonCompileUnitScope(Scope),
814 MDString::get(VMContext, Name),
816 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo)
818 return DINameSpace(MDNode::get(VMContext, Elts));
821 DILexicalBlock DIBuilder::createLexicalBlock(DIDescriptor Scope, DIFile File,
822 unsigned Line, unsigned Col) {
823 // Defeat MDNode uniqing for lexical blocks by using unique id.
824 static unsigned int unique_id = 0;
826 GetTagConstant(VMContext, dwarf::DW_TAG_lexical_block),
827 getNonCompileUnitScope(Scope),
828 ConstantInt::get(Type::getInt32Ty(VMContext), Line),
829 ConstantInt::get(Type::getInt32Ty(VMContext), Col),
831 ConstantInt::get(Type::getInt32Ty(VMContext), unique_id++)
833 return DILexicalBlock(MDNode::get(VMContext, Elts));
836 /// insertDeclare - Insert a new llvm.dbg.declare intrinsic call.
837 Instruction *DIBuilder::insertDeclare(Value *Storage, DIVariable VarInfo,
838 Instruction *InsertBefore) {
839 assert(Storage && "no storage passed to dbg.declare");
840 assert(VarInfo.Verify() && "empty DIVariable passed to dbg.declare");
842 DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
844 Value *Args[] = { MDNode::get(Storage->getContext(), Storage), VarInfo };
845 return CallInst::Create(DeclareFn, Args, "", InsertBefore);
848 /// insertDeclare - Insert a new llvm.dbg.declare intrinsic call.
849 Instruction *DIBuilder::insertDeclare(Value *Storage, DIVariable VarInfo,
850 BasicBlock *InsertAtEnd) {
851 assert(Storage && "no storage passed to dbg.declare");
852 assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.declare");
854 DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
856 Value *Args[] = { MDNode::get(Storage->getContext(), Storage), VarInfo };
858 // If this block already has a terminator then insert this intrinsic
859 // before the terminator.
860 if (TerminatorInst *T = InsertAtEnd->getTerminator())
861 return CallInst::Create(DeclareFn, Args, "", T);
863 return CallInst::Create(DeclareFn, Args, "", InsertAtEnd);
866 /// insertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
867 Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V, uint64_t Offset,
869 Instruction *InsertBefore) {
870 assert(V && "no value passed to dbg.value");
871 assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.value");
873 ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
875 Value *Args[] = { MDNode::get(V->getContext(), V),
876 ConstantInt::get(Type::getInt64Ty(V->getContext()), Offset),
878 return CallInst::Create(ValueFn, Args, "", InsertBefore);
881 /// insertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
882 Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V, uint64_t Offset,
884 BasicBlock *InsertAtEnd) {
885 assert(V && "no value passed to dbg.value");
886 assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.value");
888 ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
890 Value *Args[] = { MDNode::get(V->getContext(), V),
891 ConstantInt::get(Type::getInt64Ty(V->getContext()), Offset),
893 return CallInst::Create(ValueFn, Args, "", InsertAtEnd);