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),
37 /// finalize - Construct any deferred debug info descriptors.
38 void DIBuilder::finalize() {
39 DIArray Enums = getOrCreateArray(AllEnumTypes);
40 DIType(TempEnumTypes).replaceAllUsesWith(Enums);
42 DIArray RetainTypes = getOrCreateArray(AllRetainTypes);
43 DIType(TempRetainTypes).replaceAllUsesWith(RetainTypes);
45 DIArray SPs = getOrCreateArray(AllSubprograms);
46 DIType(TempSubprograms).replaceAllUsesWith(SPs);
47 for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i) {
48 DISubprogram SP(SPs.getElement(i));
49 if (NamedMDNode *NMD = getFnSpecificMDNode(M, SP)) {
50 SmallVector<Value *, 4> Variables;
51 for (unsigned ii = 0, ee = NMD->getNumOperands(); ii != ee; ++ii)
52 Variables.push_back(NMD->getOperand(ii));
53 if (MDNode *Temp = SP.getVariablesNodes()) {
54 DIArray AV = getOrCreateArray(Variables);
55 DIType(Temp).replaceAllUsesWith(AV);
57 NMD->eraseFromParent();
61 DIArray GVs = getOrCreateArray(AllGVs);
62 DIType(TempGVs).replaceAllUsesWith(GVs);
65 /// getNonCompileUnitScope - If N is compile unit return NULL otherwise return
67 static MDNode *getNonCompileUnitScope(MDNode *N) {
68 if (DIDescriptor(N).isCompileUnit())
73 /// createCompileUnit - A CompileUnit provides an anchor for all debugging
74 /// information generated during this instance of compilation.
75 void DIBuilder::createCompileUnit(unsigned Lang, StringRef Filename,
76 StringRef Directory, StringRef Producer,
77 bool isOptimized, StringRef Flags,
78 unsigned RunTimeVer) {
79 assert (Lang <= dwarf::DW_LANG_D && Lang >= dwarf::DW_LANG_C89
80 && "Invalid Language tag");
81 assert (!Filename.empty()
82 && "Unable to create compile unit without filename");
83 Value *TElts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
84 TempEnumTypes = MDNode::getTemporary(VMContext, TElts);
85 Value *THElts[] = { TempEnumTypes };
86 MDNode *EnumHolder = MDNode::get(VMContext, THElts);
88 TempRetainTypes = MDNode::getTemporary(VMContext, TElts);
89 Value *TRElts[] = { TempRetainTypes };
90 MDNode *RetainHolder = MDNode::get(VMContext, TRElts);
92 TempSubprograms = MDNode::getTemporary(VMContext, TElts);
93 Value *TSElts[] = { TempSubprograms };
94 MDNode *SPHolder = MDNode::get(VMContext, TSElts);
96 TempGVs = MDNode::getTemporary(VMContext, TElts);
97 Value *TVElts[] = { TempGVs };
98 MDNode *GVHolder = MDNode::get(VMContext, TVElts);
101 GetTagConstant(VMContext, dwarf::DW_TAG_compile_unit),
102 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
103 ConstantInt::get(Type::getInt32Ty(VMContext), Lang),
104 MDString::get(VMContext, Filename),
105 MDString::get(VMContext, Directory),
106 MDString::get(VMContext, Producer),
107 // Deprecate isMain field.
108 ConstantInt::get(Type::getInt1Ty(VMContext), true), // isMain
109 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
110 MDString::get(VMContext, Flags),
111 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeVer),
117 TheCU = DICompileUnit(MDNode::get(VMContext, Elts));
119 // Create a named metadata so that it is easier to find cu in a module.
120 NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.cu");
121 NMD->addOperand(TheCU);
124 /// createFile - Create a file descriptor to hold debugging information
126 DIFile DIBuilder::createFile(StringRef Filename, StringRef Directory) {
127 assert(TheCU && "Unable to create DW_TAG_file_type without CompileUnit");
128 assert(!Filename.empty() && "Unable to create file without name");
130 GetTagConstant(VMContext, dwarf::DW_TAG_file_type),
131 MDString::get(VMContext, Filename),
132 MDString::get(VMContext, Directory),
135 return DIFile(MDNode::get(VMContext, Elts));
138 /// createEnumerator - Create a single enumerator value.
139 DIEnumerator DIBuilder::createEnumerator(StringRef Name, uint64_t Val) {
140 assert(!Name.empty() && "Unable to create enumerator without name");
142 GetTagConstant(VMContext, dwarf::DW_TAG_enumerator),
143 MDString::get(VMContext, Name),
144 ConstantInt::get(Type::getInt64Ty(VMContext), Val)
146 return DIEnumerator(MDNode::get(VMContext, Elts));
149 /// createBasicType - Create debugging information entry for a basic
150 /// type, e.g 'char'.
151 DIType DIBuilder::createBasicType(StringRef Name, uint64_t SizeInBits,
152 uint64_t AlignInBits,
154 assert(!Name.empty() && "Unable to create type without name");
155 // Basic types are encoded in DIBasicType format. Line number, filename,
156 // offset and flags are always empty here.
158 GetTagConstant(VMContext, dwarf::DW_TAG_base_type),
160 MDString::get(VMContext, Name),
162 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
163 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
164 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
165 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
166 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags;
167 ConstantInt::get(Type::getInt32Ty(VMContext), Encoding)
169 return DIType(MDNode::get(VMContext, Elts));
172 /// createQaulifiedType - Create debugging information entry for a qualified
173 /// type, e.g. 'const int'.
174 DIType DIBuilder::createQualifiedType(unsigned Tag, DIType FromTy) {
175 // Qualified types are encoded in DIDerivedType format.
177 GetTagConstant(VMContext, Tag),
179 MDString::get(VMContext, StringRef()), // Empty name.
181 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
182 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
183 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
184 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
185 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
188 return DIType(MDNode::get(VMContext, Elts));
191 /// createPointerType - Create debugging information entry for a pointer.
192 DIType DIBuilder::createPointerType(DIType PointeeTy, uint64_t SizeInBits,
193 uint64_t AlignInBits, StringRef Name) {
194 // Pointer types are encoded in DIDerivedType format.
196 GetTagConstant(VMContext, dwarf::DW_TAG_pointer_type),
198 MDString::get(VMContext, Name),
200 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
201 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
202 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
203 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
204 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
207 return DIType(MDNode::get(VMContext, Elts));
210 /// createReferenceType - Create debugging information entry for a reference.
211 DIType DIBuilder::createReferenceType(DIType RTy) {
212 assert(RTy.Verify() && "Unable to create reference type");
213 // References are encoded in DIDerivedType format.
215 GetTagConstant(VMContext, dwarf::DW_TAG_reference_type),
219 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
220 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
221 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
222 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
223 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
226 return DIType(MDNode::get(VMContext, Elts));
229 /// createTypedef - Create debugging information entry for a typedef.
230 DIType DIBuilder::createTypedef(DIType Ty, StringRef Name, DIFile File,
231 unsigned LineNo, DIDescriptor Context) {
232 // typedefs are encoded in DIDerivedType format.
233 assert(Ty.Verify() && "Invalid typedef type!");
235 GetTagConstant(VMContext, dwarf::DW_TAG_typedef),
236 getNonCompileUnitScope(Context),
237 MDString::get(VMContext, Name),
239 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
240 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
241 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
242 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
243 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
246 return DIType(MDNode::get(VMContext, Elts));
249 /// createFriend - Create debugging information entry for a 'friend'.
250 DIType DIBuilder::createFriend(DIType Ty, DIType FriendTy) {
251 // typedefs are encoded in DIDerivedType format.
252 assert(Ty.Verify() && "Invalid type!");
253 assert(FriendTy.Verify() && "Invalid friend type!");
255 GetTagConstant(VMContext, dwarf::DW_TAG_friend),
259 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
260 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
261 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
262 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
263 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
266 return DIType(MDNode::get(VMContext, Elts));
269 /// createInheritance - Create debugging information entry to establish
270 /// inheritance relationship between two types.
271 DIType DIBuilder::createInheritance(DIType Ty, DIType BaseTy,
272 uint64_t BaseOffset, unsigned Flags) {
273 assert(Ty.Verify() && "Unable to create inheritance");
274 // TAG_inheritance is encoded in DIDerivedType format.
276 GetTagConstant(VMContext, dwarf::DW_TAG_inheritance),
280 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
281 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
282 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
283 ConstantInt::get(Type::getInt64Ty(VMContext), BaseOffset),
284 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
287 return DIType(MDNode::get(VMContext, Elts));
290 /// createMemberType - Create debugging information entry for a member.
291 DIType DIBuilder::createMemberType(DIDescriptor Scope, StringRef Name,
292 DIFile File, unsigned LineNumber,
293 uint64_t SizeInBits, uint64_t AlignInBits,
294 uint64_t OffsetInBits, unsigned Flags,
296 // TAG_member is encoded in DIDerivedType format.
298 GetTagConstant(VMContext, dwarf::DW_TAG_member),
299 getNonCompileUnitScope(Scope),
300 MDString::get(VMContext, Name),
302 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
303 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
304 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
305 ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
306 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
309 return DIType(MDNode::get(VMContext, Elts));
312 /// createObjCIVar - Create debugging information entry for Objective-C
313 /// instance variable.
314 DIType DIBuilder::createObjCIVar(StringRef Name,
315 DIFile File, unsigned LineNumber,
316 uint64_t SizeInBits, uint64_t AlignInBits,
317 uint64_t OffsetInBits, unsigned Flags,
318 DIType Ty, StringRef PropertyName,
319 StringRef GetterName, StringRef SetterName,
320 unsigned PropertyAttributes) {
321 // TAG_member is encoded in DIDerivedType format.
323 GetTagConstant(VMContext, dwarf::DW_TAG_member),
324 getNonCompileUnitScope(File),
325 MDString::get(VMContext, Name),
327 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
328 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
329 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
330 ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
331 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
333 MDString::get(VMContext, PropertyName),
334 MDString::get(VMContext, GetterName),
335 MDString::get(VMContext, SetterName),
336 ConstantInt::get(Type::getInt32Ty(VMContext), PropertyAttributes)
338 return DIType(MDNode::get(VMContext, Elts));
341 /// createClassType - Create debugging information entry for a class.
342 DIType DIBuilder::createClassType(DIDescriptor Context, StringRef Name,
343 DIFile File, unsigned LineNumber,
344 uint64_t SizeInBits, uint64_t AlignInBits,
345 uint64_t OffsetInBits, unsigned Flags,
346 DIType DerivedFrom, DIArray Elements,
347 MDNode *VTableHoder, MDNode *TemplateParams) {
348 // TAG_class_type is encoded in DICompositeType format.
350 GetTagConstant(VMContext, dwarf::DW_TAG_class_type),
351 getNonCompileUnitScope(Context),
352 MDString::get(VMContext, Name),
354 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
355 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
356 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
357 ConstantInt::get(Type::getInt32Ty(VMContext), OffsetInBits),
358 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
361 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
365 return DIType(MDNode::get(VMContext, Elts));
368 /// createTemplateTypeParameter - Create debugging information for template
370 DITemplateTypeParameter
371 DIBuilder::createTemplateTypeParameter(DIDescriptor Context, StringRef Name,
372 DIType Ty, MDNode *File, unsigned LineNo,
375 GetTagConstant(VMContext, dwarf::DW_TAG_template_type_parameter),
376 getNonCompileUnitScope(Context),
377 MDString::get(VMContext, Name),
380 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
381 ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo)
383 return DITemplateTypeParameter(MDNode::get(VMContext, Elts));
386 /// createTemplateValueParameter - Create debugging information for template
388 DITemplateValueParameter
389 DIBuilder::createTemplateValueParameter(DIDescriptor Context, StringRef Name,
390 DIType Ty, uint64_t Val,
391 MDNode *File, unsigned LineNo,
394 GetTagConstant(VMContext, dwarf::DW_TAG_template_value_parameter),
395 getNonCompileUnitScope(Context),
396 MDString::get(VMContext, Name),
398 ConstantInt::get(Type::getInt64Ty(VMContext), Val),
400 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
401 ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo)
403 return DITemplateValueParameter(MDNode::get(VMContext, Elts));
406 /// createStructType - Create debugging information entry for a struct.
407 DIType DIBuilder::createStructType(DIDescriptor Context, StringRef Name,
408 DIFile File, unsigned LineNumber,
409 uint64_t SizeInBits, uint64_t AlignInBits,
410 unsigned Flags, DIArray Elements,
411 unsigned RunTimeLang) {
412 // TAG_structure_type is encoded in DICompositeType format.
414 GetTagConstant(VMContext, dwarf::DW_TAG_structure_type),
415 getNonCompileUnitScope(Context),
416 MDString::get(VMContext, Name),
418 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
419 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
420 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
421 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
422 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
423 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
425 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
426 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
428 return DIType(MDNode::get(VMContext, Elts));
431 /// createUnionType - Create debugging information entry for an union.
432 DIType DIBuilder::createUnionType(DIDescriptor Scope, StringRef Name,
434 unsigned LineNumber, uint64_t SizeInBits,
435 uint64_t AlignInBits, unsigned Flags,
436 DIArray Elements, unsigned RunTimeLang) {
437 // TAG_union_type is encoded in DICompositeType format.
439 GetTagConstant(VMContext, dwarf::DW_TAG_union_type),
440 getNonCompileUnitScope(Scope),
441 MDString::get(VMContext, Name),
443 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
444 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
445 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
446 ConstantInt::get(Type::getInt64Ty(VMContext), 0),
447 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
448 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
450 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
451 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
453 return DIType(MDNode::get(VMContext, Elts));
456 /// createSubroutineType - Create subroutine type.
457 DIType DIBuilder::createSubroutineType(DIFile File, DIArray ParameterTypes) {
458 // TAG_subroutine_type is encoded in DICompositeType format.
460 GetTagConstant(VMContext, dwarf::DW_TAG_subroutine_type),
461 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
462 MDString::get(VMContext, ""),
463 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
464 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
465 ConstantInt::get(Type::getInt64Ty(VMContext), 0),
466 ConstantInt::get(Type::getInt64Ty(VMContext), 0),
467 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
468 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
469 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
471 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
472 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
474 return DIType(MDNode::get(VMContext, Elts));
477 /// createEnumerationType - Create debugging information entry for an
479 DIType DIBuilder::createEnumerationType(DIDescriptor Scope, StringRef Name,
480 DIFile File, unsigned LineNumber,
482 uint64_t AlignInBits,
484 // TAG_enumeration_type is encoded in DICompositeType format.
486 GetTagConstant(VMContext, dwarf::DW_TAG_enumeration_type),
487 getNonCompileUnitScope(Scope),
488 MDString::get(VMContext, Name),
490 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
491 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
492 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
493 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
494 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
495 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
497 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
498 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
500 MDNode *Node = MDNode::get(VMContext, Elts);
501 AllEnumTypes.push_back(Node);
505 /// createArrayType - Create debugging information entry for an array.
506 DIType DIBuilder::createArrayType(uint64_t Size, uint64_t AlignInBits,
507 DIType Ty, DIArray Subscripts) {
508 // TAG_array_type is encoded in DICompositeType format.
510 GetTagConstant(VMContext, dwarf::DW_TAG_array_type),
512 MDString::get(VMContext, ""),
514 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
515 ConstantInt::get(Type::getInt64Ty(VMContext), Size),
516 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
517 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
518 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
521 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
522 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
524 return DIType(MDNode::get(VMContext, Elts));
527 /// createVectorType - Create debugging information entry for a vector.
528 DIType DIBuilder::createVectorType(uint64_t Size, uint64_t AlignInBits,
529 DIType Ty, DIArray Subscripts) {
530 // TAG_vector_type is encoded in DICompositeType format.
532 GetTagConstant(VMContext, dwarf::DW_TAG_vector_type),
534 MDString::get(VMContext, ""),
536 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
537 ConstantInt::get(Type::getInt64Ty(VMContext), Size),
538 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
539 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
540 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
543 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
544 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
546 return DIType(MDNode::get(VMContext, Elts));
549 /// createArtificialType - Create a new DIType with "artificial" flag set.
550 DIType DIBuilder::createArtificialType(DIType Ty) {
551 if (Ty.isArtificial())
554 SmallVector<Value *, 9> Elts;
556 assert (N && "Unexpected input DIType!");
557 for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
558 if (Value *V = N->getOperand(i))
561 Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext)));
564 unsigned CurFlags = Ty.getFlags();
565 CurFlags = CurFlags | DIType::FlagArtificial;
567 // Flags are stored at this slot.
568 Elts[8] = ConstantInt::get(Type::getInt32Ty(VMContext), CurFlags);
570 return DIType(MDNode::get(VMContext, Elts));
573 /// retainType - Retain DIType in a module even if it is not referenced
574 /// through debug info anchors.
575 void DIBuilder::retainType(DIType T) {
576 AllRetainTypes.push_back(T);
579 /// createUnspecifiedParameter - Create unspeicified type descriptor
580 /// for the subroutine type.
581 DIDescriptor DIBuilder::createUnspecifiedParameter() {
583 GetTagConstant(VMContext, dwarf::DW_TAG_unspecified_parameters)
585 return DIDescriptor(MDNode::get(VMContext, Elts));
588 /// createTemporaryType - Create a temporary forward-declared type.
589 DIType DIBuilder::createTemporaryType() {
590 // Give the temporary MDNode a tag. It doesn't matter what tag we
591 // use here as long as DIType accepts it.
592 Value *Elts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
593 MDNode *Node = MDNode::getTemporary(VMContext, Elts);
597 /// createTemporaryType - Create a temporary forward-declared type.
598 DIType DIBuilder::createTemporaryType(DIFile F) {
599 // Give the temporary MDNode a tag. It doesn't matter what tag we
600 // use here as long as DIType accepts it.
602 GetTagConstant(VMContext, DW_TAG_base_type),
607 MDNode *Node = MDNode::getTemporary(VMContext, Elts);
611 /// getOrCreateArray - Get a DIArray, create one if required.
612 DIArray DIBuilder::getOrCreateArray(ArrayRef<Value *> Elements) {
613 if (Elements.empty()) {
614 Value *Null = llvm::Constant::getNullValue(Type::getInt32Ty(VMContext));
615 return DIArray(MDNode::get(VMContext, Null));
617 return DIArray(MDNode::get(VMContext, Elements));
620 /// getOrCreateSubrange - Create a descriptor for a value range. This
621 /// implicitly uniques the values returned.
622 DISubrange DIBuilder::getOrCreateSubrange(int64_t Lo, int64_t Hi) {
624 GetTagConstant(VMContext, dwarf::DW_TAG_subrange_type),
625 ConstantInt::get(Type::getInt64Ty(VMContext), Lo),
626 ConstantInt::get(Type::getInt64Ty(VMContext), Hi)
629 return DISubrange(MDNode::get(VMContext, Elts));
632 /// createGlobalVariable - Create a new descriptor for the specified global.
633 DIGlobalVariable DIBuilder::
634 createGlobalVariable(StringRef Name, 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)),
640 MDString::get(VMContext, Name),
641 MDString::get(VMContext, Name),
642 MDString::get(VMContext, Name),
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 /// createStaticVariable - Create a new descriptor for the specified static
657 DIGlobalVariable DIBuilder::
658 createStaticVariable(DIDescriptor Context, StringRef Name,
659 StringRef LinkageName, DIFile F, unsigned LineNumber,
660 DIType Ty, bool isLocalToUnit, llvm::Value *Val) {
662 GetTagConstant(VMContext, dwarf::DW_TAG_variable),
663 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
664 getNonCompileUnitScope(Context),
665 MDString::get(VMContext, Name),
666 MDString::get(VMContext, Name),
667 MDString::get(VMContext, LinkageName),
669 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
671 ConstantInt::get(Type::getInt32Ty(VMContext), isLocalToUnit),
672 ConstantInt::get(Type::getInt32Ty(VMContext), 1), /* isDefinition*/
675 MDNode *Node = MDNode::get(VMContext, Elts);
676 AllGVs.push_back(Node);
677 return DIGlobalVariable(Node);
680 /// createVariable - Create a new descriptor for the specified variable.
681 DIVariable DIBuilder::createLocalVariable(unsigned Tag, DIDescriptor Scope,
682 StringRef Name, DIFile File,
683 unsigned LineNo, DIType Ty,
684 bool AlwaysPreserve, unsigned Flags,
687 GetTagConstant(VMContext, Tag),
688 getNonCompileUnitScope(Scope),
689 MDString::get(VMContext, Name),
691 ConstantInt::get(Type::getInt32Ty(VMContext), (LineNo | (ArgNo << 24))),
693 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
694 Constant::getNullValue(Type::getInt32Ty(VMContext)),
696 MDNode *Node = MDNode::get(VMContext, Elts);
697 if (AlwaysPreserve) {
698 // The optimizer may remove local variable. If there is an interest
699 // to preserve variable info in such situation then stash it in a
701 DISubprogram Fn(getDISubprogram(Scope));
702 NamedMDNode *FnLocals = getOrInsertFnSpecificMDNode(M, Fn);
703 FnLocals->addOperand(Node);
705 return DIVariable(Node);
708 /// createComplexVariable - Create a new descriptor for the specified variable
709 /// which has a complex address expression for its address.
710 DIVariable DIBuilder::createComplexVariable(unsigned Tag, DIDescriptor Scope,
711 StringRef Name, DIFile F,
713 DIType Ty, ArrayRef<Value *> Addr,
715 SmallVector<Value *, 15> Elts;
716 Elts.push_back(GetTagConstant(VMContext, Tag));
717 Elts.push_back(getNonCompileUnitScope(Scope)),
718 Elts.push_back(MDString::get(VMContext, Name));
720 Elts.push_back(ConstantInt::get(Type::getInt32Ty(VMContext),
721 (LineNo | (ArgNo << 24))));
723 Elts.push_back(llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)));
724 Elts.push_back(llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)));
725 Elts.append(Addr.begin(), Addr.end());
727 return DIVariable(MDNode::get(VMContext, Elts));
730 /// createFunction - Create a new descriptor for the specified function.
731 DISubprogram DIBuilder::createFunction(DIDescriptor Context,
733 StringRef LinkageName,
734 DIFile File, unsigned LineNo,
736 bool isLocalToUnit, bool isDefinition,
737 unsigned Flags, bool isOptimized,
741 Value *TElts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
742 MDNode *Temp = MDNode::getTemporary(VMContext, TElts);
743 Value *TVElts[] = { Temp };
744 MDNode *THolder = MDNode::get(VMContext, TVElts);
747 GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
748 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
749 getNonCompileUnitScope(Context),
750 MDString::get(VMContext, Name),
751 MDString::get(VMContext, Name),
752 MDString::get(VMContext, LinkageName),
754 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
756 ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
757 ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
758 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
759 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
760 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
761 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
762 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
768 MDNode *Node = MDNode::get(VMContext, Elts);
770 // Create a named metadata so that we do not lose this mdnode.
771 AllSubprograms.push_back(Node);
772 return DISubprogram(Node);
775 /// createMethod - Create a new descriptor for the specified C++ method.
776 DISubprogram DIBuilder::createMethod(DIDescriptor Context,
778 StringRef LinkageName,
780 unsigned LineNo, DIType Ty,
783 unsigned VK, unsigned VIndex,
784 MDNode *VTableHolder,
789 Value *TElts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
790 MDNode *Temp = MDNode::getTemporary(VMContext, TElts);
791 Value *TVElts[] = { Temp };
792 MDNode *THolder = MDNode::get(VMContext, TVElts);
795 GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
796 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
797 getNonCompileUnitScope(Context),
798 MDString::get(VMContext, Name),
799 MDString::get(VMContext, Name),
800 MDString::get(VMContext, LinkageName),
802 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
804 ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
805 ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
806 ConstantInt::get(Type::getInt32Ty(VMContext), (unsigned)VK),
807 ConstantInt::get(Type::getInt32Ty(VMContext), VIndex),
809 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
810 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
813 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
816 MDNode *Node = MDNode::get(VMContext, Elts);
817 return DISubprogram(Node);
820 /// createNameSpace - This creates new descriptor for a namespace
821 /// with the specified parent scope.
822 DINameSpace DIBuilder::createNameSpace(DIDescriptor Scope, StringRef Name,
823 DIFile File, unsigned LineNo) {
825 GetTagConstant(VMContext, dwarf::DW_TAG_namespace),
826 getNonCompileUnitScope(Scope),
827 MDString::get(VMContext, Name),
829 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo)
831 return DINameSpace(MDNode::get(VMContext, Elts));
834 DILexicalBlock DIBuilder::createLexicalBlock(DIDescriptor Scope, DIFile File,
835 unsigned Line, unsigned Col) {
836 // Defeat MDNode uniqing for lexical blocks by using unique id.
837 static unsigned int unique_id = 0;
839 GetTagConstant(VMContext, dwarf::DW_TAG_lexical_block),
840 getNonCompileUnitScope(Scope),
841 ConstantInt::get(Type::getInt32Ty(VMContext), Line),
842 ConstantInt::get(Type::getInt32Ty(VMContext), Col),
844 ConstantInt::get(Type::getInt32Ty(VMContext), unique_id++)
846 return DILexicalBlock(MDNode::get(VMContext, Elts));
849 /// insertDeclare - Insert a new llvm.dbg.declare intrinsic call.
850 Instruction *DIBuilder::insertDeclare(Value *Storage, DIVariable VarInfo,
851 Instruction *InsertBefore) {
852 assert(Storage && "no storage passed to dbg.declare");
853 assert(VarInfo.Verify() && "empty DIVariable passed to dbg.declare");
855 DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
857 Value *Args[] = { MDNode::get(Storage->getContext(), Storage), VarInfo };
858 return CallInst::Create(DeclareFn, Args, "", InsertBefore);
861 /// insertDeclare - Insert a new llvm.dbg.declare intrinsic call.
862 Instruction *DIBuilder::insertDeclare(Value *Storage, DIVariable VarInfo,
863 BasicBlock *InsertAtEnd) {
864 assert(Storage && "no storage passed to dbg.declare");
865 assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.declare");
867 DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
869 Value *Args[] = { MDNode::get(Storage->getContext(), Storage), VarInfo };
871 // If this block already has a terminator then insert this intrinsic
872 // before the terminator.
873 if (TerminatorInst *T = InsertAtEnd->getTerminator())
874 return CallInst::Create(DeclareFn, Args, "", T);
876 return CallInst::Create(DeclareFn, Args, "", InsertAtEnd);
879 /// insertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
880 Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V, uint64_t Offset,
882 Instruction *InsertBefore) {
883 assert(V && "no value passed to dbg.value");
884 assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.value");
886 ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
888 Value *Args[] = { MDNode::get(V->getContext(), V),
889 ConstantInt::get(Type::getInt64Ty(V->getContext()), Offset),
891 return CallInst::Create(ValueFn, Args, "", InsertBefore);
894 /// insertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
895 Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V, uint64_t Offset,
897 BasicBlock *InsertAtEnd) {
898 assert(V && "no value passed to dbg.value");
899 assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.value");
901 ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
903 Value *Args[] = { MDNode::get(V->getContext(), V),
904 ConstantInt::get(Type::getInt64Ty(V->getContext()), Offset),
906 return CallInst::Create(ValueFn, Args, "", InsertAtEnd);