1 //===--- DebugInfo.cpp - Debug Information Helper Classes -----------------===//
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 helper classes used to build and interpret debug
11 // information in LLVM IR form.
13 //===----------------------------------------------------------------------===//
15 #include "llvm/DebugInfo.h"
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/ADT/SmallPtrSet.h"
18 #include "llvm/ADT/SmallString.h"
19 #include "llvm/Analysis/ValueTracking.h"
20 #include "llvm/IR/Constants.h"
21 #include "llvm/IR/DerivedTypes.h"
22 #include "llvm/IR/Instructions.h"
23 #include "llvm/IR/IntrinsicInst.h"
24 #include "llvm/IR/Intrinsics.h"
25 #include "llvm/IR/Module.h"
26 #include "llvm/Support/Debug.h"
27 #include "llvm/Support/Dwarf.h"
28 #include "llvm/Support/ValueHandle.h"
29 #include "llvm/Support/raw_ostream.h"
31 using namespace llvm::dwarf;
33 //===----------------------------------------------------------------------===//
35 //===----------------------------------------------------------------------===//
37 DIDescriptor::DIDescriptor(const DIFile F) : DbgNode(F.DbgNode) {
40 DIDescriptor::DIDescriptor(const DISubprogram F) : DbgNode(F.DbgNode) {
43 DIDescriptor::DIDescriptor(const DILexicalBlockFile F) : DbgNode(F.DbgNode) {
46 DIDescriptor::DIDescriptor(const DILexicalBlock F) : DbgNode(F.DbgNode) {
49 DIDescriptor::DIDescriptor(const DIVariable F) : DbgNode(F.DbgNode) {
52 DIDescriptor::DIDescriptor(const DIType F) : DbgNode(F.DbgNode) {
55 bool DIDescriptor::Verify() const {
57 (DIDerivedType(DbgNode).Verify() ||
58 DICompositeType(DbgNode).Verify() || DIBasicType(DbgNode).Verify() ||
59 DIVariable(DbgNode).Verify() || DISubprogram(DbgNode).Verify() ||
60 DIGlobalVariable(DbgNode).Verify() || DIFile(DbgNode).Verify() ||
61 DICompileUnit(DbgNode).Verify() || DINameSpace(DbgNode).Verify() ||
62 DILexicalBlock(DbgNode).Verify() ||
63 DILexicalBlockFile(DbgNode).Verify() ||
64 DISubrange(DbgNode).Verify() || DIEnumerator(DbgNode).Verify() ||
65 DIObjCProperty(DbgNode).Verify() ||
66 DITemplateTypeParameter(DbgNode).Verify() ||
67 DITemplateValueParameter(DbgNode).Verify() ||
68 DIImportedEntity(DbgNode).Verify());
71 static Value *getField(const MDNode *DbgNode, unsigned Elt) {
72 if (DbgNode == 0 || Elt >= DbgNode->getNumOperands())
74 return DbgNode->getOperand(Elt);
77 static const MDNode *getNodeField(const MDNode *DbgNode, unsigned Elt) {
78 if (const MDNode *R = dyn_cast_or_null<MDNode>(getField(DbgNode, Elt)))
83 static StringRef getStringField(const MDNode *DbgNode, unsigned Elt) {
84 if (MDString *MDS = dyn_cast_or_null<MDString>(getField(DbgNode, Elt)))
85 return MDS->getString();
89 StringRef DIDescriptor::getStringField(unsigned Elt) const {
90 return ::getStringField(DbgNode, Elt);
93 uint64_t DIDescriptor::getUInt64Field(unsigned Elt) const {
97 if (Elt < DbgNode->getNumOperands())
99 = dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt)))
100 return CI->getZExtValue();
105 int64_t DIDescriptor::getInt64Field(unsigned Elt) const {
109 if (Elt < DbgNode->getNumOperands())
111 = dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt)))
112 return CI->getSExtValue();
117 DIDescriptor DIDescriptor::getDescriptorField(unsigned Elt) const {
119 return DIDescriptor();
121 if (Elt < DbgNode->getNumOperands())
123 DIDescriptor(dyn_cast_or_null<const MDNode>(DbgNode->getOperand(Elt)));
124 return DIDescriptor();
127 GlobalVariable *DIDescriptor::getGlobalVariableField(unsigned Elt) const {
131 if (Elt < DbgNode->getNumOperands())
132 return dyn_cast_or_null<GlobalVariable>(DbgNode->getOperand(Elt));
136 Constant *DIDescriptor::getConstantField(unsigned Elt) const {
140 if (Elt < DbgNode->getNumOperands())
141 return dyn_cast_or_null<Constant>(DbgNode->getOperand(Elt));
145 Function *DIDescriptor::getFunctionField(unsigned Elt) const {
149 if (Elt < DbgNode->getNumOperands())
150 return dyn_cast_or_null<Function>(DbgNode->getOperand(Elt));
154 void DIDescriptor::replaceFunctionField(unsigned Elt, Function *F) {
158 if (Elt < DbgNode->getNumOperands()) {
159 MDNode *Node = const_cast<MDNode*>(DbgNode);
160 Node->replaceOperandWith(Elt, F);
164 unsigned DIVariable::getNumAddrElements() const {
165 return DbgNode->getNumOperands()-8;
168 /// getInlinedAt - If this variable is inlined then return inline location.
169 MDNode *DIVariable::getInlinedAt() const {
170 return dyn_cast_or_null<MDNode>(DbgNode->getOperand(7));
173 //===----------------------------------------------------------------------===//
175 //===----------------------------------------------------------------------===//
177 /// isBasicType - Return true if the specified tag is legal for
179 bool DIDescriptor::isBasicType() const {
180 if (!DbgNode) return false;
182 case dwarf::DW_TAG_base_type:
183 case dwarf::DW_TAG_unspecified_type:
190 /// isDerivedType - Return true if the specified tag is legal for DIDerivedType.
191 bool DIDescriptor::isDerivedType() const {
192 if (!DbgNode) return false;
194 case dwarf::DW_TAG_typedef:
195 case dwarf::DW_TAG_pointer_type:
196 case dwarf::DW_TAG_ptr_to_member_type:
197 case dwarf::DW_TAG_reference_type:
198 case dwarf::DW_TAG_rvalue_reference_type:
199 case dwarf::DW_TAG_const_type:
200 case dwarf::DW_TAG_volatile_type:
201 case dwarf::DW_TAG_restrict_type:
202 case dwarf::DW_TAG_member:
203 case dwarf::DW_TAG_inheritance:
204 case dwarf::DW_TAG_friend:
207 // CompositeTypes are currently modelled as DerivedTypes.
208 return isCompositeType();
212 /// isCompositeType - Return true if the specified tag is legal for
214 bool DIDescriptor::isCompositeType() const {
215 if (!DbgNode) return false;
217 case dwarf::DW_TAG_array_type:
218 case dwarf::DW_TAG_structure_type:
219 case dwarf::DW_TAG_union_type:
220 case dwarf::DW_TAG_enumeration_type:
221 case dwarf::DW_TAG_subroutine_type:
222 case dwarf::DW_TAG_class_type:
229 /// isVariable - Return true if the specified tag is legal for DIVariable.
230 bool DIDescriptor::isVariable() const {
231 if (!DbgNode) return false;
233 case dwarf::DW_TAG_auto_variable:
234 case dwarf::DW_TAG_arg_variable:
241 /// isType - Return true if the specified tag is legal for DIType.
242 bool DIDescriptor::isType() const {
243 return isBasicType() || isCompositeType() || isDerivedType();
246 /// isSubprogram - Return true if the specified tag is legal for
248 bool DIDescriptor::isSubprogram() const {
249 return DbgNode && getTag() == dwarf::DW_TAG_subprogram;
252 /// isGlobalVariable - Return true if the specified tag is legal for
253 /// DIGlobalVariable.
254 bool DIDescriptor::isGlobalVariable() const {
255 return DbgNode && (getTag() == dwarf::DW_TAG_variable ||
256 getTag() == dwarf::DW_TAG_constant);
259 /// isGlobal - Return true if the specified tag is legal for DIGlobal.
260 bool DIDescriptor::isGlobal() const {
261 return isGlobalVariable();
264 /// isUnspecifiedParmeter - Return true if the specified tag is
265 /// DW_TAG_unspecified_parameters.
266 bool DIDescriptor::isUnspecifiedParameter() const {
267 return DbgNode && getTag() == dwarf::DW_TAG_unspecified_parameters;
270 /// isScope - Return true if the specified tag is one of the scope
272 bool DIDescriptor::isScope() const {
273 if (!DbgNode) return false;
275 case dwarf::DW_TAG_compile_unit:
276 case dwarf::DW_TAG_lexical_block:
277 case dwarf::DW_TAG_subprogram:
278 case dwarf::DW_TAG_namespace:
286 /// isTemplateTypeParameter - Return true if the specified tag is
287 /// DW_TAG_template_type_parameter.
288 bool DIDescriptor::isTemplateTypeParameter() const {
289 return DbgNode && getTag() == dwarf::DW_TAG_template_type_parameter;
292 /// isTemplateValueParameter - Return true if the specified tag is
293 /// DW_TAG_template_value_parameter.
294 bool DIDescriptor::isTemplateValueParameter() const {
295 return DbgNode && (getTag() == dwarf::DW_TAG_template_value_parameter ||
296 getTag() == dwarf::DW_TAG_GNU_template_template_param ||
297 getTag() == dwarf::DW_TAG_GNU_template_parameter_pack);
300 /// isCompileUnit - Return true if the specified tag is DW_TAG_compile_unit.
301 bool DIDescriptor::isCompileUnit() const {
302 return DbgNode && getTag() == dwarf::DW_TAG_compile_unit;
305 /// isFile - Return true if the specified tag is DW_TAG_file_type.
306 bool DIDescriptor::isFile() const {
307 return DbgNode && getTag() == dwarf::DW_TAG_file_type;
310 /// isNameSpace - Return true if the specified tag is DW_TAG_namespace.
311 bool DIDescriptor::isNameSpace() const {
312 return DbgNode && getTag() == dwarf::DW_TAG_namespace;
315 /// isLexicalBlockFile - Return true if the specified descriptor is a
316 /// lexical block with an extra file.
317 bool DIDescriptor::isLexicalBlockFile() const {
318 return DbgNode && getTag() == dwarf::DW_TAG_lexical_block &&
319 (DbgNode->getNumOperands() == 3);
322 /// isLexicalBlock - Return true if the specified tag is DW_TAG_lexical_block.
323 bool DIDescriptor::isLexicalBlock() const {
324 return DbgNode && getTag() == dwarf::DW_TAG_lexical_block &&
325 (DbgNode->getNumOperands() > 3);
328 /// isSubrange - Return true if the specified tag is DW_TAG_subrange_type.
329 bool DIDescriptor::isSubrange() const {
330 return DbgNode && getTag() == dwarf::DW_TAG_subrange_type;
333 /// isEnumerator - Return true if the specified tag is DW_TAG_enumerator.
334 bool DIDescriptor::isEnumerator() const {
335 return DbgNode && getTag() == dwarf::DW_TAG_enumerator;
338 /// isObjCProperty - Return true if the specified tag is DW_TAG_APPLE_property.
339 bool DIDescriptor::isObjCProperty() const {
340 return DbgNode && getTag() == dwarf::DW_TAG_APPLE_property;
343 /// \brief Return true if the specified tag is DW_TAG_imported_module or
344 /// DW_TAG_imported_declaration.
345 bool DIDescriptor::isImportedEntity() const {
346 return DbgNode && (getTag() == dwarf::DW_TAG_imported_module ||
347 getTag() == dwarf::DW_TAG_imported_declaration);
350 //===----------------------------------------------------------------------===//
351 // Simple Descriptor Constructors and other Methods
352 //===----------------------------------------------------------------------===//
354 DIType::DIType(const MDNode *N) : DIScope(N) {
360 unsigned DIArray::getNumElements() const {
363 return DbgNode->getNumOperands();
366 /// replaceAllUsesWith - Replace all uses of debug info referenced by
368 void DIType::replaceAllUsesWith(DIDescriptor &D) {
372 // Since we use a TrackingVH for the node, its easy for clients to manufacture
373 // legitimate situations where they want to replaceAllUsesWith() on something
374 // which, due to uniquing, has merged with the source. We shield clients from
375 // this detail by allowing a value to be replaced with replaceAllUsesWith()
378 MDNode *Node = const_cast<MDNode*>(DbgNode);
379 const MDNode *DN = D;
380 const Value *V = cast_or_null<Value>(DN);
381 Node->replaceAllUsesWith(const_cast<Value*>(V));
382 MDNode::deleteTemporary(Node);
386 /// replaceAllUsesWith - Replace all uses of debug info referenced by
388 void DIType::replaceAllUsesWith(MDNode *D) {
392 // Since we use a TrackingVH for the node, its easy for clients to manufacture
393 // legitimate situations where they want to replaceAllUsesWith() on something
394 // which, due to uniquing, has merged with the source. We shield clients from
395 // this detail by allowing a value to be replaced with replaceAllUsesWith()
398 MDNode *Node = const_cast<MDNode*>(DbgNode);
399 const MDNode *DN = D;
400 const Value *V = cast_or_null<Value>(DN);
401 Node->replaceAllUsesWith(const_cast<Value*>(V));
402 MDNode::deleteTemporary(Node);
406 /// isUnsignedDIType - Return true if type encoding is unsigned.
407 bool DIType::isUnsignedDIType() {
408 DIDerivedType DTy(DbgNode);
410 return DTy.getTypeDerivedFrom().isUnsignedDIType();
412 DIBasicType BTy(DbgNode);
414 unsigned Encoding = BTy.getEncoding();
415 if (Encoding == dwarf::DW_ATE_unsigned ||
416 Encoding == dwarf::DW_ATE_unsigned_char ||
417 Encoding == dwarf::DW_ATE_boolean)
423 /// Verify - Verify that a compile unit is well formed.
424 bool DICompileUnit::Verify() const {
425 if (!isCompileUnit())
427 StringRef N = getFilename();
430 // It is possible that directory and produce string is empty.
431 return DbgNode->getNumOperands() == 13;
434 /// Verify - Verify that an ObjC property is well formed.
435 bool DIObjCProperty::Verify() const {
436 if (!isObjCProperty())
439 DIType Ty = getType();
440 if (!Ty.Verify()) return false;
442 // Don't worry about the rest of the strings for now.
443 return DbgNode->getNumOperands() == 8;
446 /// Verify - Verify that a type descriptor is well formed.
447 bool DIType::Verify() const {
450 if (getContext() && !getContext().Verify())
452 unsigned Tag = getTag();
453 if (!isBasicType() && Tag != dwarf::DW_TAG_const_type &&
454 Tag != dwarf::DW_TAG_volatile_type && Tag != dwarf::DW_TAG_pointer_type &&
455 Tag != dwarf::DW_TAG_ptr_to_member_type &&
456 Tag != dwarf::DW_TAG_reference_type &&
457 Tag != dwarf::DW_TAG_rvalue_reference_type &&
458 Tag != dwarf::DW_TAG_restrict_type &&
459 Tag != dwarf::DW_TAG_array_type &&
460 Tag != dwarf::DW_TAG_enumeration_type &&
461 Tag != dwarf::DW_TAG_subroutine_type &&
462 getFilename().empty())
467 /// Verify - Verify that a basic type descriptor is well formed.
468 bool DIBasicType::Verify() const {
469 return isBasicType() && DbgNode->getNumOperands() == 10;
472 /// Verify - Verify that a derived type descriptor is well formed.
473 bool DIDerivedType::Verify() const {
474 return isDerivedType() && DbgNode->getNumOperands() >= 10 &&
475 DbgNode->getNumOperands() <= 14;
478 /// Verify - Verify that a composite type descriptor is well formed.
479 bool DICompositeType::Verify() const {
480 if (!isCompositeType())
482 if (getContext() && !getContext().Verify())
485 return DbgNode->getNumOperands() >= 10 && DbgNode->getNumOperands() <= 14;
488 /// Verify - Verify that a subprogram descriptor is well formed.
489 bool DISubprogram::Verify() const {
493 if (getContext() && !getContext().Verify())
496 DICompositeType Ty = getType();
499 return DbgNode->getNumOperands() == 20;
502 /// Verify - Verify that a global variable descriptor is well formed.
503 bool DIGlobalVariable::Verify() const {
504 if (!isGlobalVariable())
507 if (getDisplayName().empty())
510 if (getContext() && !getContext().Verify())
513 DIType Ty = getType();
517 if (!getGlobal() && !getConstant())
520 return DbgNode->getNumOperands() == 13;
523 /// Verify - Verify that a variable descriptor is well formed.
524 bool DIVariable::Verify() const {
528 if (getContext() && !getContext().Verify())
531 DIType Ty = getType();
535 return DbgNode->getNumOperands() >= 8;
538 /// Verify - Verify that a location descriptor is well formed.
539 bool DILocation::Verify() const {
543 return DbgNode->getNumOperands() == 4;
546 /// Verify - Verify that a namespace descriptor is well formed.
547 bool DINameSpace::Verify() const {
550 return DbgNode->getNumOperands() == 5;
553 /// \brief Retrieve the MDNode for the directory/file pair.
554 MDNode *DIFile::getFileNode() const {
555 return const_cast<MDNode*>(getNodeField(DbgNode, 1));
558 /// \brief Verify that the file descriptor is well formed.
559 bool DIFile::Verify() const {
560 return isFile() && DbgNode->getNumOperands() == 2;
563 /// \brief Verify that the enumerator descriptor is well formed.
564 bool DIEnumerator::Verify() const {
565 return isEnumerator() && DbgNode->getNumOperands() == 3;
568 /// \brief Verify that the subrange descriptor is well formed.
569 bool DISubrange::Verify() const {
570 return isSubrange() && DbgNode->getNumOperands() == 3;
573 /// \brief Verify that the lexical block descriptor is well formed.
574 bool DILexicalBlock::Verify() const {
575 return isLexicalBlock() && DbgNode->getNumOperands() == 6;
578 /// \brief Verify that the file-scoped lexical block descriptor is well formed.
579 bool DILexicalBlockFile::Verify() const {
580 return isLexicalBlockFile() && DbgNode->getNumOperands() == 3;
583 /// \brief Verify that the template type parameter descriptor is well formed.
584 bool DITemplateTypeParameter::Verify() const {
585 return isTemplateTypeParameter() && DbgNode->getNumOperands() == 7;
588 /// \brief Verify that the template value parameter descriptor is well formed.
589 bool DITemplateValueParameter::Verify() const {
590 return isTemplateValueParameter() && DbgNode->getNumOperands() == 8;
593 /// \brief Verify that the imported module descriptor is well formed.
594 bool DIImportedEntity::Verify() const {
595 return isImportedEntity() &&
596 (DbgNode->getNumOperands() == 4 || DbgNode->getNumOperands() == 5);
599 /// getOriginalTypeSize - If this type is derived from a base type then
600 /// return base type size.
601 uint64_t DIDerivedType::getOriginalTypeSize() const {
602 unsigned Tag = getTag();
604 if (Tag != dwarf::DW_TAG_member && Tag != dwarf::DW_TAG_typedef &&
605 Tag != dwarf::DW_TAG_const_type && Tag != dwarf::DW_TAG_volatile_type &&
606 Tag != dwarf::DW_TAG_restrict_type)
607 return getSizeInBits();
609 DIType BaseType = getTypeDerivedFrom();
611 // If this type is not derived from any type then take conservative approach.
612 if (!BaseType.isValid())
613 return getSizeInBits();
615 // If this is a derived type, go ahead and get the base type, unless it's a
616 // reference then it's just the size of the field. Pointer types have no need
617 // of this since they're a different type of qualification on the type.
618 if (BaseType.getTag() == dwarf::DW_TAG_reference_type ||
619 BaseType.getTag() == dwarf::DW_TAG_rvalue_reference_type)
620 return getSizeInBits();
622 if (BaseType.isDerivedType())
623 return DIDerivedType(BaseType).getOriginalTypeSize();
625 return BaseType.getSizeInBits();
628 /// getObjCProperty - Return property node, if this ivar is associated with one.
629 MDNode *DIDerivedType::getObjCProperty() const {
630 if (DbgNode->getNumOperands() <= 10)
632 return dyn_cast_or_null<MDNode>(DbgNode->getOperand(10));
635 /// \brief Set the array of member DITypes.
636 void DICompositeType::setTypeArray(DIArray Elements, DIArray TParams) {
637 assert((!TParams || DbgNode->getNumOperands() == 14) &&
638 "If you're setting the template parameters this should include a slot "
640 TrackingVH<MDNode> N(*this);
641 N->replaceOperandWith(10, Elements);
643 N->replaceOperandWith(13, TParams);
647 /// \brief Set the containing type.
648 void DICompositeType::setContainingType(DICompositeType ContainingType) {
649 TrackingVH<MDNode> N(*this);
650 N->replaceOperandWith(12, ContainingType);
654 /// isInlinedFnArgument - Return true if this variable provides debugging
655 /// information for an inlined function arguments.
656 bool DIVariable::isInlinedFnArgument(const Function *CurFn) {
657 assert(CurFn && "Invalid function");
658 if (!getContext().isSubprogram())
660 // This variable is not inlined function argument if its scope
661 // does not describe current function.
662 return !DISubprogram(getContext()).describes(CurFn);
665 /// describes - Return true if this subprogram provides debugging
666 /// information for the function F.
667 bool DISubprogram::describes(const Function *F) {
668 assert(F && "Invalid function");
669 if (F == getFunction())
671 StringRef Name = getLinkageName();
674 if (F->getName() == Name)
679 unsigned DISubprogram::isOptimized() const {
680 assert (DbgNode && "Invalid subprogram descriptor!");
681 if (DbgNode->getNumOperands() == 15)
682 return getUnsignedField(14);
686 MDNode *DISubprogram::getVariablesNodes() const {
687 if (!DbgNode || DbgNode->getNumOperands() <= 18)
689 return dyn_cast_or_null<MDNode>(DbgNode->getOperand(18));
692 DIArray DISubprogram::getVariables() const {
693 if (!DbgNode || DbgNode->getNumOperands() <= 18)
695 if (MDNode *T = dyn_cast_or_null<MDNode>(DbgNode->getOperand(18)))
700 Value *DITemplateValueParameter::getValue() const {
701 return getField(DbgNode, 4);
704 void DIScope::setFilename(StringRef Name, LLVMContext &Context) {
707 MDString *MDName(MDString::get(Context, Name));
708 const_cast<MDNode*>(getNodeField(DbgNode, 1))->replaceOperandWith(0, MDName);
711 StringRef DIScope::getFilename() const {
714 return ::getStringField(getNodeField(DbgNode, 1), 0);
717 StringRef DIScope::getDirectory() const {
720 return ::getStringField(getNodeField(DbgNode, 1), 1);
723 DIArray DICompileUnit::getEnumTypes() const {
724 if (!DbgNode || DbgNode->getNumOperands() < 13)
727 if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(7)))
732 DIArray DICompileUnit::getRetainedTypes() const {
733 if (!DbgNode || DbgNode->getNumOperands() < 13)
736 if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(8)))
741 DIArray DICompileUnit::getSubprograms() const {
742 if (!DbgNode || DbgNode->getNumOperands() < 13)
745 if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(9)))
751 DIArray DICompileUnit::getGlobalVariables() const {
752 if (!DbgNode || DbgNode->getNumOperands() < 13)
755 if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(10)))
760 DIArray DICompileUnit::getImportedEntities() const {
761 if (!DbgNode || DbgNode->getNumOperands() < 13)
764 if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(11)))
769 /// fixupSubprogramName - Replace contains special characters used
770 /// in a typical Objective-C names with '.' in a given string.
771 static void fixupSubprogramName(DISubprogram Fn, SmallVectorImpl<char> &Out) {
773 Fn.getFunction() ? Fn.getFunction()->getName() : Fn.getName();
774 FName = Function::getRealLinkageName(FName);
776 StringRef Prefix("llvm.dbg.lv.");
777 Out.reserve(FName.size() + Prefix.size());
778 Out.append(Prefix.begin(), Prefix.end());
780 bool isObjCLike = false;
781 for (size_t i = 0, e = FName.size(); i < e; ++i) {
786 if (isObjCLike && (C == '[' || C == ']' || C == ' ' || C == ':' ||
787 C == '+' || C == '(' || C == ')'))
794 /// getFnSpecificMDNode - Return a NameMDNode, if available, that is
795 /// suitable to hold function specific information.
796 NamedMDNode *llvm::getFnSpecificMDNode(const Module &M, DISubprogram Fn) {
797 SmallString<32> Name;
798 fixupSubprogramName(Fn, Name);
799 return M.getNamedMetadata(Name.str());
802 /// getOrInsertFnSpecificMDNode - Return a NameMDNode that is suitable
803 /// to hold function specific information.
804 NamedMDNode *llvm::getOrInsertFnSpecificMDNode(Module &M, DISubprogram Fn) {
805 SmallString<32> Name;
806 fixupSubprogramName(Fn, Name);
807 return M.getOrInsertNamedMetadata(Name.str());
810 /// createInlinedVariable - Create a new inlined variable based on current
812 /// @param DV Current Variable.
813 /// @param InlinedScope Location at current variable is inlined.
814 DIVariable llvm::createInlinedVariable(MDNode *DV, MDNode *InlinedScope,
815 LLVMContext &VMContext) {
816 SmallVector<Value *, 16> Elts;
817 // Insert inlined scope as 7th element.
818 for (unsigned i = 0, e = DV->getNumOperands(); i != e; ++i)
819 i == 7 ? Elts.push_back(InlinedScope) :
820 Elts.push_back(DV->getOperand(i));
821 return DIVariable(MDNode::get(VMContext, Elts));
824 /// cleanseInlinedVariable - Remove inlined scope from the variable.
825 DIVariable llvm::cleanseInlinedVariable(MDNode *DV, LLVMContext &VMContext) {
826 SmallVector<Value *, 16> Elts;
827 // Insert inlined scope as 7th element.
828 for (unsigned i = 0, e = DV->getNumOperands(); i != e; ++i)
830 Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext))):
831 Elts.push_back(DV->getOperand(i));
832 return DIVariable(MDNode::get(VMContext, Elts));
835 /// getDISubprogram - Find subprogram that is enclosing this scope.
836 DISubprogram llvm::getDISubprogram(const MDNode *Scope) {
837 DIDescriptor D(Scope);
838 if (D.isSubprogram())
839 return DISubprogram(Scope);
841 if (D.isLexicalBlockFile())
842 return getDISubprogram(DILexicalBlockFile(Scope).getContext());
844 if (D.isLexicalBlock())
845 return getDISubprogram(DILexicalBlock(Scope).getContext());
847 return DISubprogram();
850 /// getDICompositeType - Find underlying composite type.
851 DICompositeType llvm::getDICompositeType(DIType T) {
852 if (T.isCompositeType())
853 return DICompositeType(T);
855 if (T.isDerivedType())
856 return getDICompositeType(DIDerivedType(T).getTypeDerivedFrom());
858 return DICompositeType();
861 /// isSubprogramContext - Return true if Context is either a subprogram
862 /// or another context nested inside a subprogram.
863 bool llvm::isSubprogramContext(const MDNode *Context) {
866 DIDescriptor D(Context);
867 if (D.isSubprogram())
870 return isSubprogramContext(DIType(Context).getContext());
874 //===----------------------------------------------------------------------===//
875 // DebugInfoFinder implementations.
876 //===----------------------------------------------------------------------===//
878 /// processModule - Process entire module and collect debug info.
879 void DebugInfoFinder::processModule(const Module &M) {
880 if (NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu")) {
881 for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
882 DICompileUnit CU(CU_Nodes->getOperand(i));
884 DIArray GVs = CU.getGlobalVariables();
885 for (unsigned i = 0, e = GVs.getNumElements(); i != e; ++i) {
886 DIGlobalVariable DIG(GVs.getElement(i));
887 if (addGlobalVariable(DIG))
888 processType(DIG.getType());
890 DIArray SPs = CU.getSubprograms();
891 for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i)
892 processSubprogram(DISubprogram(SPs.getElement(i)));
893 DIArray EnumTypes = CU.getEnumTypes();
894 for (unsigned i = 0, e = EnumTypes.getNumElements(); i != e; ++i)
895 processType(DIType(EnumTypes.getElement(i)));
896 DIArray RetainedTypes = CU.getRetainedTypes();
897 for (unsigned i = 0, e = RetainedTypes.getNumElements(); i != e; ++i)
898 processType(DIType(RetainedTypes.getElement(i)));
899 // FIXME: We really shouldn't be bailing out after visiting just one CU
905 /// processLocation - Process DILocation.
906 void DebugInfoFinder::processLocation(DILocation Loc) {
907 if (!Loc.Verify()) return;
908 DIDescriptor S(Loc.getScope());
909 if (S.isCompileUnit())
910 addCompileUnit(DICompileUnit(S));
911 else if (S.isSubprogram())
912 processSubprogram(DISubprogram(S));
913 else if (S.isLexicalBlock())
914 processLexicalBlock(DILexicalBlock(S));
915 else if (S.isLexicalBlockFile()) {
916 DILexicalBlockFile DBF = DILexicalBlockFile(S);
917 processLexicalBlock(DILexicalBlock(DBF.getScope()));
919 processLocation(Loc.getOrigLocation());
922 /// processType - Process DIType.
923 void DebugInfoFinder::processType(DIType DT) {
926 if (DT.isCompositeType()) {
927 DICompositeType DCT(DT);
928 processType(DCT.getTypeDerivedFrom());
929 DIArray DA = DCT.getTypeArray();
930 for (unsigned i = 0, e = DA.getNumElements(); i != e; ++i) {
931 DIDescriptor D = DA.getElement(i);
933 processType(DIType(D));
934 else if (D.isSubprogram())
935 processSubprogram(DISubprogram(D));
937 } else if (DT.isDerivedType()) {
938 DIDerivedType DDT(DT);
939 processType(DDT.getTypeDerivedFrom());
943 /// processLexicalBlock
944 void DebugInfoFinder::processLexicalBlock(DILexicalBlock LB) {
945 DIScope Context = LB.getContext();
946 if (Context.isLexicalBlock())
947 return processLexicalBlock(DILexicalBlock(Context));
948 else if (Context.isLexicalBlockFile()) {
949 DILexicalBlockFile DBF = DILexicalBlockFile(Context);
950 return processLexicalBlock(DILexicalBlock(DBF.getScope()));
953 return processSubprogram(DISubprogram(Context));
956 /// processSubprogram - Process DISubprogram.
957 void DebugInfoFinder::processSubprogram(DISubprogram SP) {
958 if (!addSubprogram(SP))
960 processType(SP.getType());
963 /// processDeclare - Process DbgDeclareInst.
964 void DebugInfoFinder::processDeclare(const DbgDeclareInst *DDI) {
965 MDNode *N = dyn_cast<MDNode>(DDI->getVariable());
969 if (!DV.isVariable())
972 if (!NodesSeen.insert(DV))
974 processType(DIVariable(N).getType());
977 /// addType - Add type into Tys.
978 bool DebugInfoFinder::addType(DIType DT) {
982 if (!NodesSeen.insert(DT))
989 /// addCompileUnit - Add compile unit into CUs.
990 bool DebugInfoFinder::addCompileUnit(DICompileUnit CU) {
994 if (!NodesSeen.insert(CU))
1001 /// addGlobalVariable - Add global variable into GVs.
1002 bool DebugInfoFinder::addGlobalVariable(DIGlobalVariable DIG) {
1003 if (!DIDescriptor(DIG).isGlobalVariable())
1006 if (!NodesSeen.insert(DIG))
1013 // addSubprogram - Add subprgoram into SPs.
1014 bool DebugInfoFinder::addSubprogram(DISubprogram SP) {
1015 if (!DIDescriptor(SP).isSubprogram())
1018 if (!NodesSeen.insert(SP))
1025 //===----------------------------------------------------------------------===//
1026 // DIDescriptor: dump routines for all descriptors.
1027 //===----------------------------------------------------------------------===//
1029 /// dump - Print descriptor to dbgs() with a newline.
1030 void DIDescriptor::dump() const {
1031 print(dbgs()); dbgs() << '\n';
1034 /// print - Print descriptor.
1035 void DIDescriptor::print(raw_ostream &OS) const {
1036 if (!DbgNode) return;
1038 if (const char *Tag = dwarf::TagString(getTag()))
1039 OS << "[ " << Tag << " ]";
1041 if (this->isSubrange()) {
1042 DISubrange(DbgNode).printInternal(OS);
1043 } else if (this->isCompileUnit()) {
1044 DICompileUnit(DbgNode).printInternal(OS);
1045 } else if (this->isFile()) {
1046 DIFile(DbgNode).printInternal(OS);
1047 } else if (this->isEnumerator()) {
1048 DIEnumerator(DbgNode).printInternal(OS);
1049 } else if (this->isBasicType()) {
1050 DIType(DbgNode).printInternal(OS);
1051 } else if (this->isDerivedType()) {
1052 DIDerivedType(DbgNode).printInternal(OS);
1053 } else if (this->isCompositeType()) {
1054 DICompositeType(DbgNode).printInternal(OS);
1055 } else if (this->isSubprogram()) {
1056 DISubprogram(DbgNode).printInternal(OS);
1057 } else if (this->isGlobalVariable()) {
1058 DIGlobalVariable(DbgNode).printInternal(OS);
1059 } else if (this->isVariable()) {
1060 DIVariable(DbgNode).printInternal(OS);
1061 } else if (this->isObjCProperty()) {
1062 DIObjCProperty(DbgNode).printInternal(OS);
1063 } else if (this->isNameSpace()) {
1064 DINameSpace(DbgNode).printInternal(OS);
1065 } else if (this->isScope()) {
1066 DIScope(DbgNode).printInternal(OS);
1070 void DISubrange::printInternal(raw_ostream &OS) const {
1071 int64_t Count = getCount();
1073 OS << " [" << getLo() << ", " << Count - 1 << ']';
1075 OS << " [unbounded]";
1078 void DIScope::printInternal(raw_ostream &OS) const {
1079 OS << " [" << getDirectory() << "/" << getFilename() << ']';
1082 void DICompileUnit::printInternal(raw_ostream &OS) const {
1083 DIScope::printInternal(OS);
1085 unsigned Lang = getLanguage();
1086 if (const char *LangStr = dwarf::LanguageString(Lang))
1089 (OS << "lang 0x").write_hex(Lang);
1093 void DIEnumerator::printInternal(raw_ostream &OS) const {
1094 OS << " [" << getName() << " :: " << getEnumValue() << ']';
1097 void DIType::printInternal(raw_ostream &OS) const {
1098 if (!DbgNode) return;
1100 StringRef Res = getName();
1102 OS << " [" << Res << "]";
1104 // TODO: Print context?
1106 OS << " [line " << getLineNumber()
1107 << ", size " << getSizeInBits()
1108 << ", align " << getAlignInBits()
1109 << ", offset " << getOffsetInBits();
1111 if (const char *Enc =
1112 dwarf::AttributeEncodingString(DIBasicType(DbgNode).getEncoding()))
1113 OS << ", enc " << Enc;
1118 else if (isProtected())
1119 OS << " [protected]";
1122 OS << " [artificial]";
1124 if (isForwardDecl())
1126 else if (getTag() == dwarf::DW_TAG_structure_type ||
1127 getTag() == dwarf::DW_TAG_union_type ||
1128 getTag() == dwarf::DW_TAG_enumeration_type ||
1129 getTag() == dwarf::DW_TAG_class_type)
1133 if (isStaticMember())
1137 void DIDerivedType::printInternal(raw_ostream &OS) const {
1138 DIType::printInternal(OS);
1139 OS << " [from " << getTypeDerivedFrom().getName() << ']';
1142 void DICompositeType::printInternal(raw_ostream &OS) const {
1143 DIType::printInternal(OS);
1144 DIArray A = getTypeArray();
1145 OS << " [" << A.getNumElements() << " elements]";
1148 void DINameSpace::printInternal(raw_ostream &OS) const {
1149 StringRef Name = getName();
1151 OS << " [" << Name << ']';
1153 OS << " [line " << getLineNumber() << ']';
1156 void DISubprogram::printInternal(raw_ostream &OS) const {
1157 // TODO : Print context
1158 OS << " [line " << getLineNumber() << ']';
1160 if (isLocalToUnit())
1166 if (getScopeLineNumber() != getLineNumber())
1167 OS << " [scope " << getScopeLineNumber() << "]";
1171 else if (isProtected())
1172 OS << " [protected]";
1174 StringRef Res = getName();
1176 OS << " [" << Res << ']';
1179 void DIGlobalVariable::printInternal(raw_ostream &OS) const {
1180 StringRef Res = getName();
1182 OS << " [" << Res << ']';
1184 OS << " [line " << getLineNumber() << ']';
1186 // TODO : Print context
1188 if (isLocalToUnit())
1195 void DIVariable::printInternal(raw_ostream &OS) const {
1196 StringRef Res = getName();
1198 OS << " [" << Res << ']';
1200 OS << " [line " << getLineNumber() << ']';
1203 void DIObjCProperty::printInternal(raw_ostream &OS) const {
1204 StringRef Name = getObjCPropertyName();
1206 OS << " [" << Name << ']';
1208 OS << " [line " << getLineNumber()
1209 << ", properties " << getUnsignedField(6) << ']';
1212 static void printDebugLoc(DebugLoc DL, raw_ostream &CommentOS,
1213 const LLVMContext &Ctx) {
1214 if (!DL.isUnknown()) { // Print source line info.
1215 DIScope Scope(DL.getScope(Ctx));
1216 assert((!Scope || Scope.isScope()) &&
1217 "Scope of a DebugLoc should be null or a DIScope.");
1218 // Omit the directory, because it's likely to be long and uninteresting.
1220 CommentOS << Scope.getFilename();
1222 CommentOS << "<unknown>";
1223 CommentOS << ':' << DL.getLine();
1224 if (DL.getCol() != 0)
1225 CommentOS << ':' << DL.getCol();
1226 DebugLoc InlinedAtDL = DebugLoc::getFromDILocation(DL.getInlinedAt(Ctx));
1227 if (!InlinedAtDL.isUnknown()) {
1228 CommentOS << " @[ ";
1229 printDebugLoc(InlinedAtDL, CommentOS, Ctx);
1235 void DIVariable::printExtendedName(raw_ostream &OS) const {
1236 const LLVMContext &Ctx = DbgNode->getContext();
1237 StringRef Res = getName();
1239 OS << Res << "," << getLineNumber();
1240 if (MDNode *InlinedAt = getInlinedAt()) {
1241 DebugLoc InlinedAtDL = DebugLoc::getFromDILocation(InlinedAt);
1242 if (!InlinedAtDL.isUnknown()) {
1244 printDebugLoc(InlinedAtDL, OS, Ctx);