1 //===-- llvm/CodeGen/MachineDebugInfo.cpp -----------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by James M. Laskey and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/CodeGen/MachineDebugInfo.h"
12 #include "llvm/Constants.h"
13 #include "llvm/DerivedTypes.h"
14 #include "llvm/GlobalVariable.h"
15 #include "llvm/Intrinsics.h"
16 #include "llvm/Instructions.h"
17 #include "llvm/Module.h"
18 #include "llvm/Support/Dwarf.h"
23 using namespace llvm::dwarf;
25 // Handle the Pass registration stuff necessary to use TargetData's.
27 RegisterPass<MachineDebugInfo> X("machinedebuginfo", "Debug Information");
30 //===----------------------------------------------------------------------===//
32 /// getGlobalVariablesUsing - Return all of the GlobalVariables which have the
33 /// specified value in their initializer somewhere.
35 getGlobalVariablesUsing(Value *V, std::vector<GlobalVariable*> &Result) {
36 // Scan though value users.
37 for (Value::use_iterator I = V->use_begin(), E = V->use_end(); I != E; ++I) {
38 if (GlobalVariable *GV = dyn_cast<GlobalVariable>(*I)) {
39 // If the user is a GlobalVariable then add to result.
41 } else if (Constant *C = dyn_cast<Constant>(*I)) {
42 // If the user is a constant variable then scan its users
43 getGlobalVariablesUsing(C, Result);
48 /// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
49 /// named GlobalVariable.
50 static std::vector<GlobalVariable*>
51 getGlobalVariablesUsing(Module &M, const std::string &RootName) {
52 std::vector<GlobalVariable*> Result; // GlobalVariables matching criteria.
54 std::vector<const Type*> FieldTypes;
55 FieldTypes.push_back(Type::UIntTy);
56 FieldTypes.push_back(Type::UIntTy);
58 // Get the GlobalVariable root.
59 GlobalVariable *UseRoot = M.getGlobalVariable(RootName,
60 StructType::get(FieldTypes));
62 // If present and linkonce then scan for users.
63 if (UseRoot && UseRoot->hasLinkOnceLinkage()) {
64 getGlobalVariablesUsing(UseRoot, Result);
70 /// isStringValue - Return true if the given value can be coerced to a string.
72 static bool isStringValue(Value *V) {
73 if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
74 if (GV->hasInitializer() && isa<ConstantArray>(GV->getInitializer())) {
75 ConstantArray *Init = cast<ConstantArray>(GV->getInitializer());
76 return Init->isString();
78 } else if (Constant *C = dyn_cast<Constant>(V)) {
79 if (GlobalValue *GV = dyn_cast<GlobalValue>(C))
80 return isStringValue(GV);
81 else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
82 if (CE->getOpcode() == Instruction::GetElementPtr) {
83 if (CE->getNumOperands() == 3 &&
84 cast<Constant>(CE->getOperand(1))->isNullValue() &&
85 isa<ConstantInt>(CE->getOperand(2))) {
86 return isStringValue(CE->getOperand(0));
94 /// getGlobalVariable - Return either a direct or cast Global value.
96 static GlobalVariable *getGlobalVariable(Value *V) {
97 if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
99 } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
100 if (CE->getOpcode() == Instruction::Cast) {
101 return dyn_cast<GlobalVariable>(CE->getOperand(0));
107 /// isGlobalVariable - Return true if the given value can be coerced to a
109 static bool isGlobalVariable(Value *V) {
110 if (isa<GlobalVariable>(V) || isa<ConstantPointerNull>(V)) {
112 } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
113 if (CE->getOpcode() == Instruction::Cast) {
114 return isa<GlobalVariable>(CE->getOperand(0));
120 /// getUIntOperand - Return ith operand if it is an unsigned integer.
122 static ConstantUInt *getUIntOperand(GlobalVariable *GV, unsigned i) {
123 // Make sure the GlobalVariable has an initializer.
124 if (!GV->hasInitializer()) return NULL;
126 // Get the initializer constant.
127 ConstantStruct *CI = dyn_cast<ConstantStruct>(GV->getInitializer());
128 if (!CI) return NULL;
130 // Check if there is at least i + 1 operands.
131 unsigned N = CI->getNumOperands();
132 if (i >= N) return NULL;
135 return dyn_cast<ConstantUInt>(CI->getOperand(i));
137 //===----------------------------------------------------------------------===//
139 /// ApplyToFields - Target the visitor to each field of the debug information
141 void DIVisitor::ApplyToFields(DebugInfoDesc *DD) {
142 DD->ApplyToFields(this);
145 //===----------------------------------------------------------------------===//
146 /// DICountVisitor - This DIVisitor counts all the fields in the supplied debug
147 /// the supplied DebugInfoDesc.
148 class DICountVisitor : public DIVisitor {
150 unsigned Count; // Running count of fields.
153 DICountVisitor() : DIVisitor(), Count(0) {}
156 unsigned getCount() const { return Count; }
158 /// Apply - Count each of the fields.
160 virtual void Apply(int &Field) { ++Count; }
161 virtual void Apply(unsigned &Field) { ++Count; }
162 virtual void Apply(int64_t &Field) { ++Count; }
163 virtual void Apply(uint64_t &Field) { ++Count; }
164 virtual void Apply(bool &Field) { ++Count; }
165 virtual void Apply(std::string &Field) { ++Count; }
166 virtual void Apply(DebugInfoDesc *&Field) { ++Count; }
167 virtual void Apply(GlobalVariable *&Field) { ++Count; }
168 virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
173 //===----------------------------------------------------------------------===//
174 /// DIDeserializeVisitor - This DIVisitor deserializes all the fields in the
175 /// supplied DebugInfoDesc.
176 class DIDeserializeVisitor : public DIVisitor {
178 DIDeserializer &DR; // Active deserializer.
179 unsigned I; // Current operand index.
180 ConstantStruct *CI; // GlobalVariable constant initializer.
183 DIDeserializeVisitor(DIDeserializer &D, GlobalVariable *GV)
187 , CI(cast<ConstantStruct>(GV->getInitializer()))
190 /// Apply - Set the value of each of the fields.
192 virtual void Apply(int &Field) {
193 Constant *C = CI->getOperand(I++);
194 Field = cast<ConstantSInt>(C)->getValue();
196 virtual void Apply(unsigned &Field) {
197 Constant *C = CI->getOperand(I++);
198 Field = cast<ConstantUInt>(C)->getValue();
200 virtual void Apply(int64_t &Field) {
201 Constant *C = CI->getOperand(I++);
202 Field = cast<ConstantSInt>(C)->getValue();
204 virtual void Apply(uint64_t &Field) {
205 Constant *C = CI->getOperand(I++);
206 Field = cast<ConstantUInt>(C)->getValue();
208 virtual void Apply(bool &Field) {
209 Constant *C = CI->getOperand(I++);
210 Field = cast<ConstantBool>(C)->getValue();
212 virtual void Apply(std::string &Field) {
213 Constant *C = CI->getOperand(I++);
214 Field = C->getStringValue();
216 virtual void Apply(DebugInfoDesc *&Field) {
217 Constant *C = CI->getOperand(I++);
218 Field = DR.Deserialize(C);
220 virtual void Apply(GlobalVariable *&Field) {
221 Constant *C = CI->getOperand(I++);
222 Field = getGlobalVariable(C);
224 virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
225 Constant *C = CI->getOperand(I++);
226 GlobalVariable *GV = getGlobalVariable(C);
228 // Have to be able to deal with the empty array case (zero initializer)
229 if (!GV->hasInitializer()) return;
230 if (ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer())) {
231 for (unsigned i = 0, N = CA->getNumOperands(); i < N; ++i) {
232 GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
233 DebugInfoDesc *DE = DR.Deserialize(GVE);
240 //===----------------------------------------------------------------------===//
241 /// DISerializeVisitor - This DIVisitor serializes all the fields in
242 /// the supplied DebugInfoDesc.
243 class DISerializeVisitor : public DIVisitor {
245 DISerializer &SR; // Active serializer.
246 std::vector<Constant*> &Elements; // Element accumulator.
249 DISerializeVisitor(DISerializer &S, std::vector<Constant*> &E)
255 /// Apply - Set the value of each of the fields.
257 virtual void Apply(int &Field) {
258 Elements.push_back(ConstantSInt::get(Type::IntTy, Field));
260 virtual void Apply(unsigned &Field) {
261 Elements.push_back(ConstantUInt::get(Type::UIntTy, Field));
263 virtual void Apply(int64_t &Field) {
264 Elements.push_back(ConstantSInt::get(Type::IntTy, Field));
266 virtual void Apply(uint64_t &Field) {
267 Elements.push_back(ConstantUInt::get(Type::UIntTy, Field));
269 virtual void Apply(bool &Field) {
270 Elements.push_back(ConstantBool::get(Field));
272 virtual void Apply(std::string &Field) {
273 Elements.push_back(SR.getString(Field));
275 virtual void Apply(DebugInfoDesc *&Field) {
276 GlobalVariable *GV = NULL;
278 // If non-NULL then convert to global.
279 if (Field) GV = SR.Serialize(Field);
281 // FIXME - At some point should use specific type.
282 const PointerType *EmptyTy = SR.getEmptyStructPtrType();
285 // Set to pointer to global.
286 Elements.push_back(ConstantExpr::getCast(GV, EmptyTy));
289 Elements.push_back(ConstantPointerNull::get(EmptyTy));
292 virtual void Apply(GlobalVariable *&Field) {
293 const PointerType *EmptyTy = SR.getEmptyStructPtrType();
295 Elements.push_back(ConstantExpr::getCast(Field, EmptyTy));
297 Elements.push_back(ConstantPointerNull::get(EmptyTy));
300 virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
301 const PointerType *EmptyTy = SR.getEmptyStructPtrType();
302 unsigned N = Field.size();
303 ArrayType *AT = ArrayType::get(EmptyTy, N);
304 std::vector<Constant *> ArrayElements;
306 for (unsigned i = 0, N = Field.size(); i < N; ++i) {
307 GlobalVariable *GVE = SR.Serialize(Field[i]);
308 Constant *CE = ConstantExpr::getCast(GVE, EmptyTy);
309 ArrayElements.push_back(cast<Constant>(CE));
312 Constant *CA = ConstantArray::get(AT, ArrayElements);
313 GlobalVariable *CAGV = new GlobalVariable(AT, true,
314 GlobalValue::InternalLinkage,
315 CA, "llvm.dbg.array",
317 CAGV->setSection("llvm.metadata");
318 Constant *CAE = ConstantExpr::getCast(CAGV, EmptyTy);
319 Elements.push_back(CAE);
323 //===----------------------------------------------------------------------===//
324 /// DIGetTypesVisitor - This DIVisitor gathers all the field types in
325 /// the supplied DebugInfoDesc.
326 class DIGetTypesVisitor : public DIVisitor {
328 DISerializer &SR; // Active serializer.
329 std::vector<const Type*> &Fields; // Type accumulator.
332 DIGetTypesVisitor(DISerializer &S, std::vector<const Type*> &F)
338 /// Apply - Set the value of each of the fields.
340 virtual void Apply(int &Field) {
341 Fields.push_back(Type::IntTy);
343 virtual void Apply(unsigned &Field) {
344 Fields.push_back(Type::UIntTy);
346 virtual void Apply(int64_t &Field) {
347 Fields.push_back(Type::IntTy);
349 virtual void Apply(uint64_t &Field) {
350 Fields.push_back(Type::UIntTy);
352 virtual void Apply(bool &Field) {
353 Fields.push_back(Type::BoolTy);
355 virtual void Apply(std::string &Field) {
356 Fields.push_back(SR.getStrPtrType());
358 virtual void Apply(DebugInfoDesc *&Field) {
359 // FIXME - At some point should use specific type.
360 const PointerType *EmptyTy = SR.getEmptyStructPtrType();
361 Fields.push_back(EmptyTy);
363 virtual void Apply(GlobalVariable *&Field) {
364 const PointerType *EmptyTy = SR.getEmptyStructPtrType();
365 Fields.push_back(EmptyTy);
367 virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
368 const PointerType *EmptyTy = SR.getEmptyStructPtrType();
369 Fields.push_back(EmptyTy);
373 //===----------------------------------------------------------------------===//
374 /// DIVerifyVisitor - This DIVisitor verifies all the field types against
375 /// a constant initializer.
376 class DIVerifyVisitor : public DIVisitor {
378 DIVerifier &VR; // Active verifier.
379 bool IsValid; // Validity status.
380 unsigned I; // Current operand index.
381 ConstantStruct *CI; // GlobalVariable constant initializer.
384 DIVerifyVisitor(DIVerifier &V, GlobalVariable *GV)
389 , CI(cast<ConstantStruct>(GV->getInitializer()))
394 bool isValid() const { return IsValid; }
396 /// Apply - Set the value of each of the fields.
398 virtual void Apply(int &Field) {
399 Constant *C = CI->getOperand(I++);
400 IsValid = IsValid && isa<ConstantInt>(C);
402 virtual void Apply(unsigned &Field) {
403 Constant *C = CI->getOperand(I++);
404 IsValid = IsValid && isa<ConstantInt>(C);
406 virtual void Apply(int64_t &Field) {
407 Constant *C = CI->getOperand(I++);
408 IsValid = IsValid && isa<ConstantInt>(C);
410 virtual void Apply(uint64_t &Field) {
411 Constant *C = CI->getOperand(I++);
412 IsValid = IsValid && isa<ConstantInt>(C);
414 virtual void Apply(bool &Field) {
415 Constant *C = CI->getOperand(I++);
416 IsValid = IsValid && isa<ConstantBool>(C);
418 virtual void Apply(std::string &Field) {
419 Constant *C = CI->getOperand(I++);
420 IsValid = IsValid && (!C || isStringValue(C));
422 virtual void Apply(DebugInfoDesc *&Field) {
423 // FIXME - Prepare the correct descriptor.
424 Constant *C = CI->getOperand(I++);
425 IsValid = IsValid && isGlobalVariable(C);
427 virtual void Apply(GlobalVariable *&Field) {
428 Constant *C = CI->getOperand(I++);
429 IsValid = IsValid && isGlobalVariable(C);
431 virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
432 Constant *C = CI->getOperand(I++);
433 IsValid = IsValid && isGlobalVariable(C);
434 if (!IsValid) return;
436 GlobalVariable *GV = getGlobalVariable(C);
437 IsValid = IsValid && GV && GV->hasInitializer();
438 if (!IsValid) return;
440 ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer());
441 IsValid = IsValid && CA;
442 if (!IsValid) return;
444 for (unsigned i = 0, N = CA->getNumOperands(); IsValid && i < N; ++i) {
445 IsValid = IsValid && isGlobalVariable(CA->getOperand(i));
446 if (!IsValid) return;
448 GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
455 //===----------------------------------------------------------------------===//
457 /// TagFromGlobal - Returns the Tag number from a debug info descriptor
459 unsigned DebugInfoDesc::TagFromGlobal(GlobalVariable *GV) {
460 ConstantUInt *C = getUIntOperand(GV, 0);
461 return C ? (unsigned)C->getValue() : (unsigned)DW_TAG_invalid;
464 /// DescFactory - Create an instance of debug info descriptor based on Tag.
465 /// Return NULL if not a recognized Tag.
466 DebugInfoDesc *DebugInfoDesc::DescFactory(unsigned Tag) {
468 case DW_TAG_anchor: return new AnchorDesc();
469 case DW_TAG_compile_unit: return new CompileUnitDesc();
470 case DW_TAG_variable: return new GlobalVariableDesc();
471 case DW_TAG_subprogram: return new SubprogramDesc();
472 case DW_TAG_lexical_block: return new BlockDesc();
473 case DW_TAG_base_type: return new BasicTypeDesc();
475 case DW_TAG_pointer_type:
476 case DW_TAG_reference_type:
477 case DW_TAG_const_type:
478 case DW_TAG_volatile_type:
479 case DW_TAG_restrict_type:
480 case DW_TAG_member: return new DerivedTypeDesc(Tag);
481 case DW_TAG_array_type:
482 case DW_TAG_structure_type:
483 case DW_TAG_union_type:
484 case DW_TAG_enumeration_type: return new CompositeTypeDesc(Tag);
485 case DW_TAG_subrange_type: return new SubrangeDesc();
486 case DW_TAG_enumerator: return new EnumeratorDesc();
487 case DW_TAG_return_variable:
488 case DW_TAG_arg_variable:
489 case DW_TAG_auto_variable: return new VariableDesc(Tag);
495 /// getLinkage - get linkage appropriate for this type of descriptor.
497 GlobalValue::LinkageTypes DebugInfoDesc::getLinkage() const {
498 return GlobalValue::InternalLinkage;
501 /// ApplyToFields - Target the vistor to the fields of the descriptor.
503 void DebugInfoDesc::ApplyToFields(DIVisitor *Visitor) {
507 //===----------------------------------------------------------------------===//
509 AnchorDesc::AnchorDesc()
510 : DebugInfoDesc(DW_TAG_anchor)
513 AnchorDesc::AnchorDesc(AnchoredDesc *D)
514 : DebugInfoDesc(DW_TAG_anchor)
515 , AnchorTag(D->getTag())
518 // Implement isa/cast/dyncast.
519 bool AnchorDesc::classof(const DebugInfoDesc *D) {
520 return D->getTag() == DW_TAG_anchor;
523 /// getLinkage - get linkage appropriate for this type of descriptor.
525 GlobalValue::LinkageTypes AnchorDesc::getLinkage() const {
526 return GlobalValue::LinkOnceLinkage;
529 /// ApplyToFields - Target the visitor to the fields of the TransUnitDesc.
531 void AnchorDesc::ApplyToFields(DIVisitor *Visitor) {
532 DebugInfoDesc::ApplyToFields(Visitor);
534 Visitor->Apply(AnchorTag);
537 /// getDescString - Return a string used to compose global names and labels. A
538 /// A global variable name needs to be defined for each debug descriptor that is
539 /// anchored. NOTE: that each global variable named here also needs to be added
540 /// to the list of names left external in the internalizer.
541 /// ExternalNames.insert("llvm.dbg.compile_units");
542 /// ExternalNames.insert("llvm.dbg.global_variables");
543 /// ExternalNames.insert("llvm.dbg.subprograms");
544 const char *AnchorDesc::getDescString() const {
546 case DW_TAG_compile_unit: return CompileUnitDesc::AnchorString;
547 case DW_TAG_variable: return GlobalVariableDesc::AnchorString;
548 case DW_TAG_subprogram: return SubprogramDesc::AnchorString;
552 assert(0 && "Tag does not have a case for anchor string");
556 /// getTypeString - Return a string used to label this descriptors type.
558 const char *AnchorDesc::getTypeString() const {
559 return "llvm.dbg.anchor.type";
563 void AnchorDesc::dump() {
564 std::cerr << getDescString() << " "
565 << "Tag(" << getTag() << "), "
566 << "AnchorTag(" << AnchorTag << ")\n";
570 //===----------------------------------------------------------------------===//
572 AnchoredDesc::AnchoredDesc(unsigned T)
577 /// ApplyToFields - Target the visitor to the fields of the AnchoredDesc.
579 void AnchoredDesc::ApplyToFields(DIVisitor *Visitor) {
580 DebugInfoDesc::ApplyToFields(Visitor);
582 Visitor->Apply((DebugInfoDesc *&)Anchor);
585 //===----------------------------------------------------------------------===//
587 CompileUnitDesc::CompileUnitDesc()
588 : AnchoredDesc(DW_TAG_compile_unit)
589 , DebugVersion(LLVMDebugVersion)
596 // Implement isa/cast/dyncast.
597 bool CompileUnitDesc::classof(const DebugInfoDesc *D) {
598 return D->getTag() == DW_TAG_compile_unit;
601 /// DebugVersionFromGlobal - Returns the version number from a compile unit
603 unsigned CompileUnitDesc::DebugVersionFromGlobal(GlobalVariable *GV) {
604 ConstantUInt *C = getUIntOperand(GV, 2);
605 return C ? (unsigned)C->getValue() : (unsigned)DW_TAG_invalid;
608 /// ApplyToFields - Target the visitor to the fields of the CompileUnitDesc.
610 void CompileUnitDesc::ApplyToFields(DIVisitor *Visitor) {
611 AnchoredDesc::ApplyToFields(Visitor);
613 Visitor->Apply(DebugVersion);
614 Visitor->Apply(Language);
615 Visitor->Apply(FileName);
616 Visitor->Apply(Directory);
617 Visitor->Apply(Producer);
620 /// getDescString - Return a string used to compose global names and labels.
622 const char *CompileUnitDesc::getDescString() const {
623 return "llvm.dbg.compile_unit";
626 /// getTypeString - Return a string used to label this descriptors type.
628 const char *CompileUnitDesc::getTypeString() const {
629 return "llvm.dbg.compile_unit.type";
632 /// getAnchorString - Return a string used to label this descriptor's anchor.
634 const char *CompileUnitDesc::AnchorString = "llvm.dbg.compile_units";
635 const char *CompileUnitDesc::getAnchorString() const {
640 void CompileUnitDesc::dump() {
641 std::cerr << getDescString() << " "
642 << "Tag(" << getTag() << "), "
643 << "Anchor(" << getAnchor() << "), "
644 << "DebugVersion(" << DebugVersion << "), "
645 << "Language(" << Language << "), "
646 << "FileName(\"" << FileName << "\"), "
647 << "Directory(\"" << Directory << "\"), "
648 << "Producer(\"" << Producer << "\")\n";
652 //===----------------------------------------------------------------------===//
654 TypeDesc::TypeDesc(unsigned T)
665 /// ApplyToFields - Target the visitor to the fields of the TypeDesc.
667 void TypeDesc::ApplyToFields(DIVisitor *Visitor) {
668 DebugInfoDesc::ApplyToFields(Visitor);
670 Visitor->Apply(Context);
671 Visitor->Apply(Name);
672 Visitor->Apply((DebugInfoDesc *&)File);
673 Visitor->Apply(Line);
674 Visitor->Apply(Size);
675 Visitor->Apply(Align);
676 Visitor->Apply(Offset);
679 /// getDescString - Return a string used to compose global names and labels.
681 const char *TypeDesc::getDescString() const {
682 return "llvm.dbg.type";
685 /// getTypeString - Return a string used to label this descriptor's type.
687 const char *TypeDesc::getTypeString() const {
688 return "llvm.dbg.type.type";
692 void TypeDesc::dump() {
693 std::cerr << getDescString() << " "
694 << "Tag(" << getTag() << "), "
695 << "Context(" << Context << "), "
696 << "Name(\"" << Name << "\"), "
697 << "File(" << File << "), "
698 << "Line(" << Line << "), "
699 << "Size(" << Size << "), "
700 << "Align(" << Align << "), "
701 << "Offset(" << Offset << ")\n";
705 //===----------------------------------------------------------------------===//
707 BasicTypeDesc::BasicTypeDesc()
708 : TypeDesc(DW_TAG_base_type)
712 // Implement isa/cast/dyncast.
713 bool BasicTypeDesc::classof(const DebugInfoDesc *D) {
714 return D->getTag() == DW_TAG_base_type;
717 /// ApplyToFields - Target the visitor to the fields of the BasicTypeDesc.
719 void BasicTypeDesc::ApplyToFields(DIVisitor *Visitor) {
720 TypeDesc::ApplyToFields(Visitor);
722 Visitor->Apply(Encoding);
725 /// getDescString - Return a string used to compose global names and labels.
727 const char *BasicTypeDesc::getDescString() const {
728 return "llvm.dbg.basictype";
731 /// getTypeString - Return a string used to label this descriptor's type.
733 const char *BasicTypeDesc::getTypeString() const {
734 return "llvm.dbg.basictype.type";
738 void BasicTypeDesc::dump() {
739 std::cerr << getDescString() << " "
740 << "Tag(" << getTag() << "), "
741 << "Context(" << getContext() << "), "
742 << "Name(\"" << getName() << "\"), "
743 << "Size(" << getSize() << "), "
744 << "Encoding(" << Encoding << ")\n";
748 //===----------------------------------------------------------------------===//
750 DerivedTypeDesc::DerivedTypeDesc(unsigned T)
755 // Implement isa/cast/dyncast.
756 bool DerivedTypeDesc::classof(const DebugInfoDesc *D) {
757 unsigned T = D->getTag();
760 case DW_TAG_pointer_type:
761 case DW_TAG_reference_type:
762 case DW_TAG_const_type:
763 case DW_TAG_volatile_type:
764 case DW_TAG_restrict_type:
772 /// ApplyToFields - Target the visitor to the fields of the DerivedTypeDesc.
774 void DerivedTypeDesc::ApplyToFields(DIVisitor *Visitor) {
775 TypeDesc::ApplyToFields(Visitor);
777 Visitor->Apply((DebugInfoDesc *&)FromType);
780 /// getDescString - Return a string used to compose global names and labels.
782 const char *DerivedTypeDesc::getDescString() const {
783 return "llvm.dbg.derivedtype";
786 /// getTypeString - Return a string used to label this descriptor's type.
788 const char *DerivedTypeDesc::getTypeString() const {
789 return "llvm.dbg.derivedtype.type";
793 void DerivedTypeDesc::dump() {
794 std::cerr << getDescString() << " "
795 << "Tag(" << getTag() << "), "
796 << "Context(" << getContext() << "), "
797 << "Name(\"" << getName() << "\"), "
798 << "Size(" << getSize() << "), "
799 << "File(" << getFile() << "), "
800 << "Line(" << getLine() << "), "
801 << "FromType(" << FromType << ")\n";
805 //===----------------------------------------------------------------------===//
807 CompositeTypeDesc::CompositeTypeDesc(unsigned T)
812 // Implement isa/cast/dyncast.
813 bool CompositeTypeDesc::classof(const DebugInfoDesc *D) {
814 unsigned T = D->getTag();
816 case DW_TAG_array_type:
817 case DW_TAG_structure_type:
818 case DW_TAG_union_type:
819 case DW_TAG_enumeration_type:
826 /// ApplyToFields - Target the visitor to the fields of the CompositeTypeDesc.
828 void CompositeTypeDesc::ApplyToFields(DIVisitor *Visitor) {
829 DerivedTypeDesc::ApplyToFields(Visitor);
831 Visitor->Apply(Elements);
834 /// getDescString - Return a string used to compose global names and labels.
836 const char *CompositeTypeDesc::getDescString() const {
837 return "llvm.dbg.compositetype";
840 /// getTypeString - Return a string used to label this descriptor's type.
842 const char *CompositeTypeDesc::getTypeString() const {
843 return "llvm.dbg.compositetype.type";
847 void CompositeTypeDesc::dump() {
848 std::cerr << getDescString() << " "
849 << "Tag(" << getTag() << "), "
850 << "Context(" << getContext() << "), "
851 << "Name(\"" << getName() << "\"), "
852 << "Size(" << getSize() << "), "
853 << "File(" << getFile() << "), "
854 << "Line(" << getLine() << "), "
855 << "FromType(" << getFromType() << "), "
856 << "Elements.size(" << Elements.size() << ")\n";
860 //===----------------------------------------------------------------------===//
862 SubrangeDesc::SubrangeDesc()
863 : DebugInfoDesc(DW_TAG_subrange_type)
868 // Implement isa/cast/dyncast.
869 bool SubrangeDesc::classof(const DebugInfoDesc *D) {
870 return D->getTag() == DW_TAG_subrange_type;
873 /// ApplyToFields - Target the visitor to the fields of the SubrangeDesc.
875 void SubrangeDesc::ApplyToFields(DIVisitor *Visitor) {
876 DebugInfoDesc::ApplyToFields(Visitor);
882 /// getDescString - Return a string used to compose global names and labels.
884 const char *SubrangeDesc::getDescString() const {
885 return "llvm.dbg.subrange";
888 /// getTypeString - Return a string used to label this descriptor's type.
890 const char *SubrangeDesc::getTypeString() const {
891 return "llvm.dbg.subrange.type";
895 void SubrangeDesc::dump() {
896 std::cerr << getDescString() << " "
897 << "Tag(" << getTag() << "), "
898 << "Lo(" << Lo << "), "
899 << "Hi(" << Hi << ")\n";
903 //===----------------------------------------------------------------------===//
905 EnumeratorDesc::EnumeratorDesc()
906 : DebugInfoDesc(DW_TAG_enumerator)
911 // Implement isa/cast/dyncast.
912 bool EnumeratorDesc::classof(const DebugInfoDesc *D) {
913 return D->getTag() == DW_TAG_enumerator;
916 /// ApplyToFields - Target the visitor to the fields of the EnumeratorDesc.
918 void EnumeratorDesc::ApplyToFields(DIVisitor *Visitor) {
919 DebugInfoDesc::ApplyToFields(Visitor);
921 Visitor->Apply(Name);
922 Visitor->Apply(Value);
925 /// getDescString - Return a string used to compose global names and labels.
927 const char *EnumeratorDesc::getDescString() const {
928 return "llvm.dbg.enumerator";
931 /// getTypeString - Return a string used to label this descriptor's type.
933 const char *EnumeratorDesc::getTypeString() const {
934 return "llvm.dbg.enumerator.type";
938 void EnumeratorDesc::dump() {
939 std::cerr << getDescString() << " "
940 << "Tag(" << getTag() << "), "
941 << "Name(" << Name << "), "
942 << "Value(" << Value << ")\n";
946 //===----------------------------------------------------------------------===//
948 VariableDesc::VariableDesc(unsigned T)
957 // Implement isa/cast/dyncast.
958 bool VariableDesc::classof(const DebugInfoDesc *D) {
959 unsigned T = D->getTag();
961 case DW_TAG_auto_variable:
962 case DW_TAG_arg_variable:
963 case DW_TAG_return_variable:
970 /// ApplyToFields - Target the visitor to the fields of the VariableDesc.
972 void VariableDesc::ApplyToFields(DIVisitor *Visitor) {
973 DebugInfoDesc::ApplyToFields(Visitor);
975 Visitor->Apply(Context);
976 Visitor->Apply(Name);
977 Visitor->Apply((DebugInfoDesc *&)File);
978 Visitor->Apply(Line);
979 Visitor->Apply((DebugInfoDesc *&)TyDesc);
982 /// getDescString - Return a string used to compose global names and labels.
984 const char *VariableDesc::getDescString() const {
985 return "llvm.dbg.variable";
988 /// getTypeString - Return a string used to label this descriptor's type.
990 const char *VariableDesc::getTypeString() const {
991 return "llvm.dbg.variable.type";
995 void VariableDesc::dump() {
996 std::cerr << getDescString() << " "
997 << "Tag(" << getTag() << "), "
998 << "Context(" << Context << "), "
999 << "Name(\"" << Name << "\"), "
1000 << "File(" << File << "), "
1001 << "Line(" << Line << "), "
1002 << "TyDesc(" << TyDesc << ")\n";
1006 //===----------------------------------------------------------------------===//
1008 GlobalDesc::GlobalDesc(unsigned T)
1016 , IsDefinition(false)
1019 /// ApplyToFields - Target the visitor to the fields of the global.
1021 void GlobalDesc::ApplyToFields(DIVisitor *Visitor) {
1022 AnchoredDesc::ApplyToFields(Visitor);
1024 Visitor->Apply(Context);
1025 Visitor->Apply(Name);
1026 Visitor->Apply((DebugInfoDesc *&)File);
1027 Visitor->Apply(Line);
1028 Visitor->Apply((DebugInfoDesc *&)TyDesc);
1029 Visitor->Apply(IsStatic);
1030 Visitor->Apply(IsDefinition);
1033 //===----------------------------------------------------------------------===//
1035 GlobalVariableDesc::GlobalVariableDesc()
1036 : GlobalDesc(DW_TAG_variable)
1040 // Implement isa/cast/dyncast.
1041 bool GlobalVariableDesc::classof(const DebugInfoDesc *D) {
1042 return D->getTag() == DW_TAG_variable;
1045 /// ApplyToFields - Target the visitor to the fields of the GlobalVariableDesc.
1047 void GlobalVariableDesc::ApplyToFields(DIVisitor *Visitor) {
1048 GlobalDesc::ApplyToFields(Visitor);
1050 Visitor->Apply(Global);
1053 /// getDescString - Return a string used to compose global names and labels.
1055 const char *GlobalVariableDesc::getDescString() const {
1056 return "llvm.dbg.global_variable";
1059 /// getTypeString - Return a string used to label this descriptors type.
1061 const char *GlobalVariableDesc::getTypeString() const {
1062 return "llvm.dbg.global_variable.type";
1065 /// getAnchorString - Return a string used to label this descriptor's anchor.
1067 const char *GlobalVariableDesc::AnchorString = "llvm.dbg.global_variables";
1068 const char *GlobalVariableDesc::getAnchorString() const {
1069 return AnchorString;
1073 void GlobalVariableDesc::dump() {
1074 std::cerr << getDescString() << " "
1075 << "Tag(" << getTag() << "), "
1076 << "Anchor(" << getAnchor() << "), "
1077 << "Name(\"" << getName() << "\"), "
1078 << "File(" << getFile() << "),"
1079 << "Line(" << getLine() << "),"
1080 << "Type(\"" << getType() << "\"), "
1081 << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
1082 << "IsDefinition(" << (isDefinition() ? "true" : "false") << "), "
1083 << "Global(" << Global << ")\n";
1087 //===----------------------------------------------------------------------===//
1089 SubprogramDesc::SubprogramDesc()
1090 : GlobalDesc(DW_TAG_subprogram)
1093 // Implement isa/cast/dyncast.
1094 bool SubprogramDesc::classof(const DebugInfoDesc *D) {
1095 return D->getTag() == DW_TAG_subprogram;
1098 /// ApplyToFields - Target the visitor to the fields of the
1100 void SubprogramDesc::ApplyToFields(DIVisitor *Visitor) {
1101 GlobalDesc::ApplyToFields(Visitor);
1104 /// getDescString - Return a string used to compose global names and labels.
1106 const char *SubprogramDesc::getDescString() const {
1107 return "llvm.dbg.subprogram";
1110 /// getTypeString - Return a string used to label this descriptors type.
1112 const char *SubprogramDesc::getTypeString() const {
1113 return "llvm.dbg.subprogram.type";
1116 /// getAnchorString - Return a string used to label this descriptor's anchor.
1118 const char *SubprogramDesc::AnchorString = "llvm.dbg.subprograms";
1119 const char *SubprogramDesc::getAnchorString() const {
1120 return AnchorString;
1124 void SubprogramDesc::dump() {
1125 std::cerr << getDescString() << " "
1126 << "Tag(" << getTag() << "), "
1127 << "Anchor(" << getAnchor() << "), "
1128 << "Name(\"" << getName() << "\"), "
1129 << "File(" << getFile() << "),"
1130 << "Line(" << getLine() << "),"
1131 << "Type(\"" << getType() << "\"), "
1132 << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
1133 << "IsDefinition(" << (isDefinition() ? "true" : "false") << ")\n";
1137 //===----------------------------------------------------------------------===//
1139 BlockDesc::BlockDesc()
1140 : DebugInfoDesc(DW_TAG_lexical_block)
1144 // Implement isa/cast/dyncast.
1145 bool BlockDesc::classof(const DebugInfoDesc *D) {
1146 return D->getTag() == DW_TAG_lexical_block;
1149 /// ApplyToFields - Target the visitor to the fields of the BlockDesc.
1151 void BlockDesc::ApplyToFields(DIVisitor *Visitor) {
1152 DebugInfoDesc::ApplyToFields(Visitor);
1154 Visitor->Apply(Context);
1157 /// getDescString - Return a string used to compose global names and labels.
1159 const char *BlockDesc::getDescString() const {
1160 return "llvm.dbg.block";
1163 /// getTypeString - Return a string used to label this descriptors type.
1165 const char *BlockDesc::getTypeString() const {
1166 return "llvm.dbg.block.type";
1170 void BlockDesc::dump() {
1171 std::cerr << getDescString() << " "
1172 << "Tag(" << getTag() << "),"
1173 << "Context(" << Context << ")\n";
1177 //===----------------------------------------------------------------------===//
1179 DebugInfoDesc *DIDeserializer::Deserialize(Value *V) {
1180 return Deserialize(getGlobalVariable(V));
1182 DebugInfoDesc *DIDeserializer::Deserialize(GlobalVariable *GV) {
1184 if (!GV) return NULL;
1186 // Check to see if it has been already deserialized.
1187 DebugInfoDesc *&Slot = GlobalDescs[GV];
1188 if (Slot) return Slot;
1190 // Get the Tag from the global.
1191 unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
1193 // Get the debug version if a compile unit.
1194 if (Tag == DW_TAG_compile_unit) {
1195 DebugVersion = CompileUnitDesc::DebugVersionFromGlobal(GV);
1198 // Create an empty instance of the correct sort.
1199 Slot = DebugInfoDesc::DescFactory(Tag);
1201 // If not a user defined descriptor.
1203 // Deserialize the fields.
1204 DIDeserializeVisitor DRAM(*this, GV);
1205 DRAM.ApplyToFields(Slot);
1211 //===----------------------------------------------------------------------===//
1213 /// getStrPtrType - Return a "sbyte *" type.
1215 const PointerType *DISerializer::getStrPtrType() {
1216 // If not already defined.
1218 // Construct the pointer to signed bytes.
1219 StrPtrTy = PointerType::get(Type::SByteTy);
1225 /// getEmptyStructPtrType - Return a "{ }*" type.
1227 const PointerType *DISerializer::getEmptyStructPtrType() {
1228 // If not already defined.
1229 if (!EmptyStructPtrTy) {
1230 // Construct the empty structure type.
1231 const StructType *EmptyStructTy =
1232 StructType::get(std::vector<const Type*>());
1233 // Construct the pointer to empty structure type.
1234 EmptyStructPtrTy = PointerType::get(EmptyStructTy);
1237 return EmptyStructPtrTy;
1240 /// getTagType - Return the type describing the specified descriptor (via tag.)
1242 const StructType *DISerializer::getTagType(DebugInfoDesc *DD) {
1243 // Attempt to get the previously defined type.
1244 StructType *&Ty = TagTypes[DD->getTag()];
1246 // If not already defined.
1248 // Set up fields vector.
1249 std::vector<const Type*> Fields;
1250 // Get types of fields.
1251 DIGetTypesVisitor GTAM(*this, Fields);
1252 GTAM.ApplyToFields(DD);
1254 // Construct structured type.
1255 Ty = StructType::get(Fields);
1257 // Register type name with module.
1258 M->addTypeName(DD->getTypeString(), Ty);
1264 /// getString - Construct the string as constant string global.
1266 Constant *DISerializer::getString(const std::string &String) {
1267 // Check string cache for previous edition.
1268 Constant *&Slot = StringCache[String];
1269 // Return Constant if previously defined.
1270 if (Slot) return Slot;
1271 // If empty string then use a sbyte* null instead.
1272 if (String.empty()) {
1273 Slot = ConstantPointerNull::get(getStrPtrType());
1275 // Construct string as an llvm constant.
1276 Constant *ConstStr = ConstantArray::get(String);
1277 // Otherwise create and return a new string global.
1278 GlobalVariable *StrGV = new GlobalVariable(ConstStr->getType(), true,
1279 GlobalVariable::InternalLinkage,
1280 ConstStr, "str", M);
1281 StrGV->setSection("llvm.metadata");
1282 // Convert to generic string pointer.
1283 Slot = ConstantExpr::getCast(StrGV, getStrPtrType());
1289 /// Serialize - Recursively cast the specified descriptor into a GlobalVariable
1290 /// so that it can be serialized to a .bc or .ll file.
1291 GlobalVariable *DISerializer::Serialize(DebugInfoDesc *DD) {
1292 // Check if the DebugInfoDesc is already in the map.
1293 GlobalVariable *&Slot = DescGlobals[DD];
1295 // See if DebugInfoDesc exists, if so return prior GlobalVariable.
1296 if (Slot) return Slot;
1298 // Get the type associated with the Tag.
1299 const StructType *Ty = getTagType(DD);
1301 // Create the GlobalVariable early to prevent infinite recursion.
1302 GlobalVariable *GV = new GlobalVariable(Ty, true, DD->getLinkage(),
1303 NULL, DD->getDescString(), M);
1304 GV->setSection("llvm.metadata");
1306 // Insert new GlobalVariable in DescGlobals map.
1309 // Set up elements vector
1310 std::vector<Constant*> Elements;
1312 DISerializeVisitor SRAM(*this, Elements);
1313 SRAM.ApplyToFields(DD);
1315 // Set the globals initializer.
1316 GV->setInitializer(ConstantStruct::get(Ty, Elements));
1321 //===----------------------------------------------------------------------===//
1323 /// Verify - Return true if the GlobalVariable appears to be a valid
1324 /// serialization of a DebugInfoDesc.
1325 bool DIVerifier::Verify(Value *V) {
1326 return !V || Verify(getGlobalVariable(V));
1328 bool DIVerifier::Verify(GlobalVariable *GV) {
1330 if (!GV) return true;
1332 // Check prior validity.
1333 unsigned &ValiditySlot = Validity[GV];
1335 // If visited before then use old state.
1336 if (ValiditySlot) return ValiditySlot == Valid;
1338 // Assume validity for the time being (recursion.)
1339 ValiditySlot = Valid;
1341 // Make sure the global is internal or link once (anchor.)
1342 if (GV->getLinkage() != GlobalValue::InternalLinkage &&
1343 GV->getLinkage() != GlobalValue::LinkOnceLinkage) {
1344 ValiditySlot = Invalid;
1349 unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
1351 // Check for user defined descriptors.
1352 if (Tag == DW_TAG_invalid) return true;
1354 // If a compile unit we need the debug version.
1355 if (Tag == DW_TAG_compile_unit) {
1356 DebugVersion = CompileUnitDesc::DebugVersionFromGlobal(GV);
1357 // FIXME - In the short term, changes are too drastic to continue.
1358 if (DebugVersion != LLVMDebugVersion) {
1359 ValiditySlot = Invalid;
1364 // Construct an empty DebugInfoDesc.
1365 DebugInfoDesc *DD = DebugInfoDesc::DescFactory(Tag);
1367 // Allow for user defined descriptors.
1368 if (!DD) return true;
1370 // Get the initializer constant.
1371 ConstantStruct *CI = cast<ConstantStruct>(GV->getInitializer());
1373 // Get the operand count.
1374 unsigned N = CI->getNumOperands();
1376 // Get the field count.
1377 unsigned &CountSlot = Counts[Tag];
1379 // Check the operand count to the field count
1380 DICountVisitor CTAM;
1381 CTAM.ApplyToFields(DD);
1382 CountSlot = CTAM.getCount();
1385 // Field count must be at most equal operand count.
1386 if (CountSlot > N) {
1388 ValiditySlot = Invalid;
1392 // Check each field for valid type.
1393 DIVerifyVisitor VRAM(*this, GV);
1394 VRAM.ApplyToFields(DD);
1396 // Release empty DebugInfoDesc.
1399 // If fields are not valid.
1400 if (!VRAM.isValid()) {
1401 ValiditySlot = Invalid;
1408 //===----------------------------------------------------------------------===//
1410 DebugScope::~DebugScope() {
1411 for (unsigned i = 0, N = Scopes.size(); i < N; ++i) delete Scopes[i];
1412 for (unsigned j = 0, M = Variables.size(); j < M; ++j) delete Variables[j];
1415 //===----------------------------------------------------------------------===//
1417 MachineDebugInfo::MachineDebugInfo()
1430 MachineDebugInfo::~MachineDebugInfo() {
1434 /// doInitialization - Initialize the debug state for a new module.
1436 bool MachineDebugInfo::doInitialization() {
1440 /// doFinalization - Tear down the debug state after completion of a module.
1442 bool MachineDebugInfo::doFinalization() {
1446 /// getDescFor - Convert a Value to a debug information descriptor.
1448 // FIXME - use new Value type when available.
1449 DebugInfoDesc *MachineDebugInfo::getDescFor(Value *V) {
1450 return DR.Deserialize(V);
1453 /// Verify - Verify that a Value is debug information descriptor.
1455 bool MachineDebugInfo::Verify(Value *V) {
1456 return VR.Verify(V);
1459 /// AnalyzeModule - Scan the module for global debug information.
1461 void MachineDebugInfo::AnalyzeModule(Module &M) {
1462 SetupCompileUnits(M);
1465 /// SetupCompileUnits - Set up the unique vector of compile units.
1467 void MachineDebugInfo::SetupCompileUnits(Module &M) {
1468 std::vector<CompileUnitDesc *>CU = getAnchoredDescriptors<CompileUnitDesc>(M);
1470 for (unsigned i = 0, N = CU.size(); i < N; i++) {
1471 CompileUnits.insert(CU[i]);
1475 /// getCompileUnits - Return a vector of debug compile units.
1477 const UniqueVector<CompileUnitDesc *> MachineDebugInfo::getCompileUnits()const{
1478 return CompileUnits;
1481 /// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
1482 /// named GlobalVariable.
1483 std::vector<GlobalVariable*>
1484 MachineDebugInfo::getGlobalVariablesUsing(Module &M,
1485 const std::string &RootName) {
1486 return ::getGlobalVariablesUsing(M, RootName);
1489 /// RecordLabel - Records location information and associates it with a
1490 /// debug label. Returns a unique label ID used to generate a label and
1491 /// provide correspondence to the source line list.
1492 unsigned MachineDebugInfo::RecordLabel(unsigned Line, unsigned Column,
1494 unsigned ID = NextLabelID();
1495 Lines.push_back(new SourceLineInfo(Line, Column, Source, ID));
1499 /// RecordSource - Register a source file with debug info. Returns an source
1501 unsigned MachineDebugInfo::RecordSource(const std::string &Directory,
1502 const std::string &Source) {
1503 unsigned DirectoryID = Directories.insert(Directory);
1504 return SourceFiles.insert(SourceFileInfo(DirectoryID, Source));
1506 unsigned MachineDebugInfo::RecordSource(const CompileUnitDesc *CompileUnit) {
1507 return RecordSource(CompileUnit->getDirectory(),
1508 CompileUnit->getFileName());
1511 /// RecordRegionStart - Indicate the start of a region.
1513 unsigned MachineDebugInfo::RecordRegionStart(Value *V) {
1514 // FIXME - need to be able to handle split scopes because of bb cloning.
1515 DebugInfoDesc *ScopeDesc = DR.Deserialize(V);
1516 DebugScope *Scope = getOrCreateScope(ScopeDesc);
1517 unsigned ID = NextLabelID();
1518 if (!Scope->getStartLabelID()) Scope->setStartLabelID(ID);
1522 /// RecordRegionEnd - Indicate the end of a region.
1524 unsigned MachineDebugInfo::RecordRegionEnd(Value *V) {
1525 // FIXME - need to be able to handle split scopes because of bb cloning.
1526 DebugInfoDesc *ScopeDesc = DR.Deserialize(V);
1527 DebugScope *Scope = getOrCreateScope(ScopeDesc);
1528 unsigned ID = NextLabelID();
1529 Scope->setEndLabelID(ID);
1533 /// RecordVariable - Indicate the declaration of a local variable.
1535 void MachineDebugInfo::RecordVariable(Value *V, unsigned FrameIndex) {
1536 VariableDesc *VD = cast<VariableDesc>(DR.Deserialize(V));
1537 DebugScope *Scope = getOrCreateScope(VD->getContext());
1538 DebugVariable *DV = new DebugVariable(VD, FrameIndex);
1539 Scope->AddVariable(DV);
1542 /// getOrCreateScope - Returns the scope associated with the given descriptor.
1544 DebugScope *MachineDebugInfo::getOrCreateScope(DebugInfoDesc *ScopeDesc) {
1545 DebugScope *&Slot = ScopeMap[ScopeDesc];
1547 // FIXME - breaks down when the context is an inlined function.
1548 DebugInfoDesc *ParentDesc = NULL;
1549 if (BlockDesc *Block = dyn_cast<BlockDesc>(ScopeDesc)) {
1550 ParentDesc = Block->getContext();
1552 DebugScope *Parent = ParentDesc ? getOrCreateScope(ParentDesc) : NULL;
1553 Slot = new DebugScope(Parent, ScopeDesc);
1555 Parent->AddScope(Slot);
1556 } else if (RootScope) {
1557 // FIXME - Add inlined function scopes to the root so we can delete
1558 // them later. Long term, handle inlined functions properly.
1559 RootScope->AddScope(Slot);
1561 // First function is top level function.
1568 /// ClearScopes - Delete the scope and variable info after a function is
1570 void MachineDebugInfo::ClearScopes() {