// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
-//
-// Collect debug information for a module. This information should be in a
-// neutral form that can be used by different debugging schemes.
-//
-//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineDebugInfo.h"
+#include "llvm/Constants.h"
+#include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/GlobalVariable.h"
+#include "llvm/Intrinsics.h"
+#include "llvm/Instructions.h"
+#include "llvm/Module.h"
+#include "llvm/Support/Dwarf.h"
+
+#include <iostream>
+
using namespace llvm;
+using namespace llvm::dwarf;
// Handle the Pass registration stuff necessary to use TargetData's.
namespace {
- RegisterPass<MachineDebugInfo> X("machinedebuginfo", "Debug Information",
- PassInfo::Analysis | PassInfo::Optimization);
+ RegisterPass<MachineDebugInfo> X("machinedebuginfo", "Debug Information");
+}
+
+//===----------------------------------------------------------------------===//
+
+/// getGlobalVariablesUsing - Return all of the GlobalVariables which have the
+/// specified value in their initializer somewhere.
+static void
+getGlobalVariablesUsing(Value *V, std::vector<GlobalVariable*> &Result) {
+ // Scan though value users.
+ for (Value::use_iterator I = V->use_begin(), E = V->use_end(); I != E; ++I) {
+ if (GlobalVariable *GV = dyn_cast<GlobalVariable>(*I)) {
+ // If the user is a GlobalVariable then add to result.
+ Result.push_back(GV);
+ } else if (Constant *C = dyn_cast<Constant>(*I)) {
+ // If the user is a constant variable then scan its users
+ getGlobalVariablesUsing(C, Result);
+ }
+ }
}
-namespace llvm {
+/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
+/// named GlobalVariable.
+static std::vector<GlobalVariable*>
+getGlobalVariablesUsing(Module &M, const std::string &RootName) {
+ std::vector<GlobalVariable*> Result; // GlobalVariables matching criteria.
- /// DebugInfo - Keep track of debug information for the function.
- ///
- // FIXME - making it global until we can find a proper place to hang it from.
- MachineDebugInfo *DebugInfo;
+ std::vector<const Type*> FieldTypes;
+ FieldTypes.push_back(Type::UIntTy);
+ FieldTypes.push_back(Type::UIntTy);
+
+ // Get the GlobalVariable root.
+ GlobalVariable *UseRoot = M.getGlobalVariable(RootName,
+ StructType::get(FieldTypes));
- // FIXME - temporary hack until we can find a place to hand debug info from.
- ModulePass *createDebugInfoPass() {
- if (!DebugInfo) DebugInfo = new MachineDebugInfo();
- return (ModulePass *)DebugInfo;
+ // If present and linkonce then scan for users.
+ if (UseRoot && UseRoot->hasLinkOnceLinkage()) {
+ getGlobalVariablesUsing(UseRoot, Result);
}
- /// getDebugInfo - Returns the DebugInfo.
- MachineDebugInfo &getMachineDebugInfo() {
- assert(DebugInfo && "DebugInfo pass not created");
- return *DebugInfo;
+ return Result;
+}
+
+/// isStringValue - Return true if the given value can be coerced to a string.
+///
+static bool isStringValue(Value *V) {
+ if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
+ if (GV->hasInitializer() && isa<ConstantArray>(GV->getInitializer())) {
+ ConstantArray *Init = cast<ConstantArray>(GV->getInitializer());
+ return Init->isString();
+ }
+ } else if (Constant *C = dyn_cast<Constant>(V)) {
+ if (GlobalValue *GV = dyn_cast<GlobalValue>(C))
+ return isStringValue(GV);
+ else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
+ if (CE->getOpcode() == Instruction::GetElementPtr) {
+ if (CE->getNumOperands() == 3 &&
+ cast<Constant>(CE->getOperand(1))->isNullValue() &&
+ isa<ConstantInt>(CE->getOperand(2))) {
+ return isStringValue(CE->getOperand(0));
+ }
+ }
+ }
}
+ return false;
+}
- /// doInitialization - Initialize the debug state for a new module.
- ///
- bool MachineDebugInfo::doInitialization() {
+/// getGlobalVariable - Return either a direct or cast Global value.
+///
+static GlobalVariable *getGlobalVariable(Value *V) {
+ if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
+ return GV;
+ } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
+ if (CE->getOpcode() == Instruction::Cast) {
+ return dyn_cast<GlobalVariable>(CE->getOperand(0));
+ }
+ }
+ return NULL;
+}
+
+/// isGlobalVariable - Return true if the given value can be coerced to a
+/// GlobalVariable.
+static bool isGlobalVariable(Value *V) {
+ if (isa<GlobalVariable>(V) || isa<ConstantPointerNull>(V)) {
return true;
+ } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
+ if (CE->getOpcode() == Instruction::Cast) {
+ return isa<GlobalVariable>(CE->getOperand(0));
+ }
}
+ return false;
+}
+
+/// getUIntOperand - Return ith operand if it is an unsigned integer.
+///
+static ConstantUInt *getUIntOperand(GlobalVariable *GV, unsigned i) {
+ // Make sure the GlobalVariable has an initializer.
+ if (!GV->hasInitializer()) return NULL;
+
+ // Get the initializer constant.
+ ConstantStruct *CI = dyn_cast<ConstantStruct>(GV->getInitializer());
+ if (!CI) return NULL;
+
+ // Check if there is at least i + 1 operands.
+ unsigned N = CI->getNumOperands();
+ if (i >= N) return NULL;
+
+ // Check constant.
+ return dyn_cast<ConstantUInt>(CI->getOperand(i));
+}
+//===----------------------------------------------------------------------===//
- /// doFinalization - Tear down the debug state after completion of a module.
+/// ApplyToFields - Target the visitor to each field of the debug information
+/// descriptor.
+void DIVisitor::ApplyToFields(DebugInfoDesc *DD) {
+ DD->ApplyToFields(this);
+}
+
+//===----------------------------------------------------------------------===//
+/// DICountVisitor - This DIVisitor counts all the fields in the supplied debug
+/// the supplied DebugInfoDesc.
+class DICountVisitor : public DIVisitor {
+private:
+ unsigned Count; // Running count of fields.
+
+public:
+ DICountVisitor() : DIVisitor(), Count(0) {}
+
+ // Accessors.
+ unsigned getCount() const { return Count; }
+
+ /// Apply - Count each of the fields.
///
- bool MachineDebugInfo::doFinalization() {
- return true;
+ virtual void Apply(int &Field) { ++Count; }
+ virtual void Apply(unsigned &Field) { ++Count; }
+ virtual void Apply(int64_t &Field) { ++Count; }
+ virtual void Apply(uint64_t &Field) { ++Count; }
+ virtual void Apply(bool &Field) { ++Count; }
+ virtual void Apply(std::string &Field) { ++Count; }
+ virtual void Apply(DebugInfoDesc *&Field) { ++Count; }
+ virtual void Apply(GlobalVariable *&Field) { ++Count; }
+ virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
+ ++Count;
}
+};
+
+//===----------------------------------------------------------------------===//
+/// DIDeserializeVisitor - This DIVisitor deserializes all the fields in the
+/// supplied DebugInfoDesc.
+class DIDeserializeVisitor : public DIVisitor {
+private:
+ DIDeserializer &DR; // Active deserializer.
+ unsigned I; // Current operand index.
+ ConstantStruct *CI; // GlobalVariable constant initializer.
- /// RecordSource - Register a source file with debug info. Returns an id.
+public:
+ DIDeserializeVisitor(DIDeserializer &D, GlobalVariable *GV)
+ : DIVisitor()
+ , DR(D)
+ , I(0)
+ , CI(cast<ConstantStruct>(GV->getInitializer()))
+ {}
+
+ /// Apply - Set the value of each of the fields.
///
- unsigned MachineDebugInfo::RecordSource(std::string fname,
- std::string dirname) {
- // Compose a key
- std::string path = dirname + "/" + fname;
- // Check if the source file is already recorded
- StrIntMapIter SMI = SourceMap.find(path);
- // If already there return existing id
- if (SMI != SourceMap.end()) return SMI->second;
- // Bump up the count
- ++SourceCount;
- // Record the count
- SourceMap[path] = SourceCount;
- // Return id
- return SourceCount;
- }
-
- /// getSourceFiles - Return a vector of files. Vector index + 1 equals id.
+ virtual void Apply(int &Field) {
+ Constant *C = CI->getOperand(I++);
+ Field = cast<ConstantSInt>(C)->getValue();
+ }
+ virtual void Apply(unsigned &Field) {
+ Constant *C = CI->getOperand(I++);
+ Field = cast<ConstantUInt>(C)->getValue();
+ }
+ virtual void Apply(int64_t &Field) {
+ Constant *C = CI->getOperand(I++);
+ Field = cast<ConstantSInt>(C)->getValue();
+ }
+ virtual void Apply(uint64_t &Field) {
+ Constant *C = CI->getOperand(I++);
+ Field = cast<ConstantUInt>(C)->getValue();
+ }
+ virtual void Apply(bool &Field) {
+ Constant *C = CI->getOperand(I++);
+ Field = cast<ConstantBool>(C)->getValue();
+ }
+ virtual void Apply(std::string &Field) {
+ Constant *C = CI->getOperand(I++);
+ Field = C->getStringValue();
+ }
+ virtual void Apply(DebugInfoDesc *&Field) {
+ Constant *C = CI->getOperand(I++);
+ Field = DR.Deserialize(C);
+ }
+ virtual void Apply(GlobalVariable *&Field) {
+ Constant *C = CI->getOperand(I++);
+ Field = getGlobalVariable(C);
+ }
+ virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
+ Constant *C = CI->getOperand(I++);
+ GlobalVariable *GV = getGlobalVariable(C);
+ Field.resize(0);
+ // Have to be able to deal with the empty array case (zero initializer)
+ if (!GV->hasInitializer()) return;
+ if (ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer())) {
+ for (unsigned i = 0, N = CA->getNumOperands(); i < N; ++i) {
+ GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
+ DebugInfoDesc *DE = DR.Deserialize(GVE);
+ Field.push_back(DE);
+ }
+ }
+ }
+};
+
+//===----------------------------------------------------------------------===//
+/// DISerializeVisitor - This DIVisitor serializes all the fields in
+/// the supplied DebugInfoDesc.
+class DISerializeVisitor : public DIVisitor {
+private:
+ DISerializer &SR; // Active serializer.
+ std::vector<Constant*> &Elements; // Element accumulator.
+
+public:
+ DISerializeVisitor(DISerializer &S, std::vector<Constant*> &E)
+ : DIVisitor()
+ , SR(S)
+ , Elements(E)
+ {}
+
+ /// Apply - Set the value of each of the fields.
///
- std::vector<std::string> MachineDebugInfo::getSourceFiles() {
- std::vector<std::string> Sources(SourceCount);
+ virtual void Apply(int &Field) {
+ Elements.push_back(ConstantSInt::get(Type::IntTy, Field));
+ }
+ virtual void Apply(unsigned &Field) {
+ Elements.push_back(ConstantUInt::get(Type::UIntTy, Field));
+ }
+ virtual void Apply(int64_t &Field) {
+ Elements.push_back(ConstantSInt::get(Type::LongTy, Field));
+ }
+ virtual void Apply(uint64_t &Field) {
+ Elements.push_back(ConstantUInt::get(Type::ULongTy, Field));
+ }
+ virtual void Apply(bool &Field) {
+ Elements.push_back(ConstantBool::get(Field));
+ }
+ virtual void Apply(std::string &Field) {
+ Elements.push_back(SR.getString(Field));
+ }
+ virtual void Apply(DebugInfoDesc *&Field) {
+ GlobalVariable *GV = NULL;
+
+ // If non-NULL then convert to global.
+ if (Field) GV = SR.Serialize(Field);
+
+ // FIXME - At some point should use specific type.
+ const PointerType *EmptyTy = SR.getEmptyStructPtrType();
- for (StrIntMapIter SMI = SourceMap.begin(), E = SourceMap.end(); SMI != E;
- SMI++) {
- unsigned Index = SMI->second - 1;
- std::string Path = SMI->first;
- Sources[Index] = Path;
+ if (GV) {
+ // Set to pointer to global.
+ Elements.push_back(ConstantExpr::getCast(GV, EmptyTy));
+ } else {
+ // Use NULL.
+ Elements.push_back(ConstantPointerNull::get(EmptyTy));
}
- return Sources;
}
+ virtual void Apply(GlobalVariable *&Field) {
+ const PointerType *EmptyTy = SR.getEmptyStructPtrType();
+ if (Field) {
+ Elements.push_back(ConstantExpr::getCast(Field, EmptyTy));
+ } else {
+ Elements.push_back(ConstantPointerNull::get(EmptyTy));
+ }
+ }
+ virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
+ const PointerType *EmptyTy = SR.getEmptyStructPtrType();
+ unsigned N = Field.size();
+ ArrayType *AT = ArrayType::get(EmptyTy, N);
+ std::vector<Constant *> ArrayElements;
+ for (unsigned i = 0, N = Field.size(); i < N; ++i) {
+ GlobalVariable *GVE = SR.Serialize(Field[i]);
+ Constant *CE = ConstantExpr::getCast(GVE, EmptyTy);
+ ArrayElements.push_back(cast<Constant>(CE));
+ }
+
+ Constant *CA = ConstantArray::get(AT, ArrayElements);
+ GlobalVariable *CAGV = new GlobalVariable(AT, true,
+ GlobalValue::InternalLinkage,
+ CA, "llvm.dbg.array",
+ SR.getModule());
+ CAGV->setSection("llvm.metadata");
+ Constant *CAE = ConstantExpr::getCast(CAGV, EmptyTy);
+ Elements.push_back(CAE);
+ }
+};
+//===----------------------------------------------------------------------===//
+/// DIGetTypesVisitor - This DIVisitor gathers all the field types in
+/// the supplied DebugInfoDesc.
+class DIGetTypesVisitor : public DIVisitor {
+private:
+ DISerializer &SR; // Active serializer.
+ std::vector<const Type*> &Fields; // Type accumulator.
+
+public:
+ DIGetTypesVisitor(DISerializer &S, std::vector<const Type*> &F)
+ : DIVisitor()
+ , SR(S)
+ , Fields(F)
+ {}
+
+ /// Apply - Set the value of each of the fields.
+ ///
+ virtual void Apply(int &Field) {
+ Fields.push_back(Type::IntTy);
+ }
+ virtual void Apply(unsigned &Field) {
+ Fields.push_back(Type::UIntTy);
+ }
+ virtual void Apply(int64_t &Field) {
+ Fields.push_back(Type::LongTy);
+ }
+ virtual void Apply(uint64_t &Field) {
+ Fields.push_back(Type::ULongTy);
+ }
+ virtual void Apply(bool &Field) {
+ Fields.push_back(Type::BoolTy);
+ }
+ virtual void Apply(std::string &Field) {
+ Fields.push_back(SR.getStrPtrType());
+ }
+ virtual void Apply(DebugInfoDesc *&Field) {
+ // FIXME - At some point should use specific type.
+ const PointerType *EmptyTy = SR.getEmptyStructPtrType();
+ Fields.push_back(EmptyTy);
+ }
+ virtual void Apply(GlobalVariable *&Field) {
+ const PointerType *EmptyTy = SR.getEmptyStructPtrType();
+ Fields.push_back(EmptyTy);
+ }
+ virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
+ const PointerType *EmptyTy = SR.getEmptyStructPtrType();
+ Fields.push_back(EmptyTy);
+ }
+};
+
+//===----------------------------------------------------------------------===//
+/// DIVerifyVisitor - This DIVisitor verifies all the field types against
+/// a constant initializer.
+class DIVerifyVisitor : public DIVisitor {
+private:
+ DIVerifier &VR; // Active verifier.
+ bool IsValid; // Validity status.
+ unsigned I; // Current operand index.
+ ConstantStruct *CI; // GlobalVariable constant initializer.
+
+public:
+ DIVerifyVisitor(DIVerifier &V, GlobalVariable *GV)
+ : DIVisitor()
+ , VR(V)
+ , IsValid(true)
+ , I(0)
+ , CI(cast<ConstantStruct>(GV->getInitializer()))
+ {
+ }
+
+ // Accessors.
+ bool isValid() const { return IsValid; }
+
+ /// Apply - Set the value of each of the fields.
+ ///
+ virtual void Apply(int &Field) {
+ Constant *C = CI->getOperand(I++);
+ IsValid = IsValid && isa<ConstantInt>(C);
+ }
+ virtual void Apply(unsigned &Field) {
+ Constant *C = CI->getOperand(I++);
+ IsValid = IsValid && isa<ConstantInt>(C);
+ }
+ virtual void Apply(int64_t &Field) {
+ Constant *C = CI->getOperand(I++);
+ IsValid = IsValid && isa<ConstantInt>(C);
+ }
+ virtual void Apply(uint64_t &Field) {
+ Constant *C = CI->getOperand(I++);
+ IsValid = IsValid && isa<ConstantInt>(C);
+ }
+ virtual void Apply(bool &Field) {
+ Constant *C = CI->getOperand(I++);
+ IsValid = IsValid && isa<ConstantBool>(C);
+ }
+ virtual void Apply(std::string &Field) {
+ Constant *C = CI->getOperand(I++);
+ IsValid = IsValid && (!C || isStringValue(C));
+ }
+ virtual void Apply(DebugInfoDesc *&Field) {
+ // FIXME - Prepare the correct descriptor.
+ Constant *C = CI->getOperand(I++);
+ IsValid = IsValid && isGlobalVariable(C);
+ }
+ virtual void Apply(GlobalVariable *&Field) {
+ Constant *C = CI->getOperand(I++);
+ IsValid = IsValid && isGlobalVariable(C);
+ }
+ virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
+ Constant *C = CI->getOperand(I++);
+ IsValid = IsValid && isGlobalVariable(C);
+ if (!IsValid) return;
+
+ GlobalVariable *GV = getGlobalVariable(C);
+ IsValid = IsValid && GV && GV->hasInitializer();
+ if (!IsValid) return;
+
+ ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer());
+ IsValid = IsValid && CA;
+ if (!IsValid) return;
+
+ for (unsigned i = 0, N = CA->getNumOperands(); IsValid && i < N; ++i) {
+ IsValid = IsValid && isGlobalVariable(CA->getOperand(i));
+ if (!IsValid) return;
+
+ GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
+ VR.Verify(GVE);
+ }
+ }
};
+
+//===----------------------------------------------------------------------===//
+
+/// TagFromGlobal - Returns the tag number from a debug info descriptor
+/// GlobalVariable. Return DIIValid if operand is not an unsigned int.
+unsigned DebugInfoDesc::TagFromGlobal(GlobalVariable *GV) {
+ ConstantUInt *C = getUIntOperand(GV, 0);
+ return C ? ((unsigned)C->getValue() & tag_mask) : (unsigned)DW_TAG_invalid;
+}
+
+/// VersionFromGlobal - Returns the version number from a debug info
+/// descriptor GlobalVariable. Return DIIValid if operand is not an unsigned
+/// int.
+unsigned DebugInfoDesc::VersionFromGlobal(GlobalVariable *GV) {
+ ConstantUInt *C = getUIntOperand(GV, 0);
+ return C ? ((unsigned)C->getValue() >> version_shift) :
+ (unsigned)DW_TAG_invalid;
+}
+
+/// DescFactory - Create an instance of debug info descriptor based on Tag.
+/// Return NULL if not a recognized Tag.
+DebugInfoDesc *DebugInfoDesc::DescFactory(unsigned Tag) {
+ switch (Tag) {
+ case DW_TAG_anchor: return new AnchorDesc();
+ case DW_TAG_compile_unit: return new CompileUnitDesc();
+ case DW_TAG_variable: return new GlobalVariableDesc();
+ case DW_TAG_subprogram: return new SubprogramDesc();
+ case DW_TAG_lexical_block: return new BlockDesc();
+ case DW_TAG_base_type: return new BasicTypeDesc();
+ case DW_TAG_typedef:
+ case DW_TAG_pointer_type:
+ case DW_TAG_reference_type:
+ case DW_TAG_const_type:
+ case DW_TAG_volatile_type:
+ case DW_TAG_restrict_type:
+ case DW_TAG_member: return new DerivedTypeDesc(Tag);
+ case DW_TAG_array_type:
+ case DW_TAG_structure_type:
+ case DW_TAG_union_type:
+ case DW_TAG_enumeration_type: return new CompositeTypeDesc(Tag);
+ case DW_TAG_subrange_type: return new SubrangeDesc();
+ case DW_TAG_enumerator: return new EnumeratorDesc();
+ case DW_TAG_return_variable:
+ case DW_TAG_arg_variable:
+ case DW_TAG_auto_variable: return new VariableDesc(Tag);
+ default: break;
+ }
+ return NULL;
+}
+
+/// getLinkage - get linkage appropriate for this type of descriptor.
+///
+GlobalValue::LinkageTypes DebugInfoDesc::getLinkage() const {
+ return GlobalValue::InternalLinkage;
+}
+
+/// ApplyToFields - Target the vistor to the fields of the descriptor.
+///
+void DebugInfoDesc::ApplyToFields(DIVisitor *Visitor) {
+ Visitor->Apply(Tag);
+}
+
+//===----------------------------------------------------------------------===//
+
+AnchorDesc::AnchorDesc()
+: DebugInfoDesc(DW_TAG_anchor)
+, AnchorTag(0)
+{}
+AnchorDesc::AnchorDesc(AnchoredDesc *D)
+: DebugInfoDesc(DW_TAG_anchor)
+, AnchorTag(D->getTag())
+{}
+
+// Implement isa/cast/dyncast.
+bool AnchorDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_anchor;
+}
+
+/// getLinkage - get linkage appropriate for this type of descriptor.
+///
+GlobalValue::LinkageTypes AnchorDesc::getLinkage() const {
+ return GlobalValue::LinkOnceLinkage;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the TransUnitDesc.
+///
+void AnchorDesc::ApplyToFields(DIVisitor *Visitor) {
+ DebugInfoDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(AnchorTag);
+}
+
+/// getDescString - Return a string used to compose global names and labels. A
+/// A global variable name needs to be defined for each debug descriptor that is
+/// anchored. NOTE: that each global variable named here also needs to be added
+/// to the list of names left external in the internalizer.
+/// ExternalNames.insert("llvm.dbg.compile_units");
+/// ExternalNames.insert("llvm.dbg.global_variables");
+/// ExternalNames.insert("llvm.dbg.subprograms");
+const char *AnchorDesc::getDescString() const {
+ switch (AnchorTag) {
+ case DW_TAG_compile_unit: return CompileUnitDesc::AnchorString;
+ case DW_TAG_variable: return GlobalVariableDesc::AnchorString;
+ case DW_TAG_subprogram: return SubprogramDesc::AnchorString;
+ default: break;
+ }
+
+ assert(0 && "Tag does not have a case for anchor string");
+ return "";
+}
+
+/// getTypeString - Return a string used to label this descriptors type.
+///
+const char *AnchorDesc::getTypeString() const {
+ return "llvm.dbg.anchor.type";
+}
+
+#ifndef NDEBUG
+void AnchorDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "AnchorTag(" << AnchorTag << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+AnchoredDesc::AnchoredDesc(unsigned T)
+: DebugInfoDesc(T)
+, Anchor(NULL)
+{}
+
+/// ApplyToFields - Target the visitor to the fields of the AnchoredDesc.
+///
+void AnchoredDesc::ApplyToFields(DIVisitor *Visitor) {
+ DebugInfoDesc::ApplyToFields(Visitor);
+
+ DebugInfoDesc *Tmp = Anchor;
+ Visitor->Apply(Tmp);
+ Anchor = (AnchorDesc*)Tmp;
+}
+
+//===----------------------------------------------------------------------===//
+
+CompileUnitDesc::CompileUnitDesc()
+: AnchoredDesc(DW_TAG_compile_unit)
+, Language(0)
+, FileName("")
+, Directory("")
+, Producer("")
+{}
+
+// Implement isa/cast/dyncast.
+bool CompileUnitDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_compile_unit;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the CompileUnitDesc.
+///
+void CompileUnitDesc::ApplyToFields(DIVisitor *Visitor) {
+ AnchoredDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Language);
+ Visitor->Apply(FileName);
+ Visitor->Apply(Directory);
+ Visitor->Apply(Producer);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *CompileUnitDesc::getDescString() const {
+ return "llvm.dbg.compile_unit";
+}
+
+/// getTypeString - Return a string used to label this descriptors type.
+///
+const char *CompileUnitDesc::getTypeString() const {
+ return "llvm.dbg.compile_unit.type";
+}
+
+/// getAnchorString - Return a string used to label this descriptor's anchor.
+///
+const char *CompileUnitDesc::AnchorString = "llvm.dbg.compile_units";
+const char *CompileUnitDesc::getAnchorString() const {
+ return AnchorString;
+}
+
+#ifndef NDEBUG
+void CompileUnitDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Anchor(" << getAnchor() << "), "
+ << "Language(" << Language << "), "
+ << "FileName(\"" << FileName << "\"), "
+ << "Directory(\"" << Directory << "\"), "
+ << "Producer(\"" << Producer << "\")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+TypeDesc::TypeDesc(unsigned T)
+: DebugInfoDesc(T)
+, Context(NULL)
+, Name("")
+, File(NULL)
+, Line(0)
+, Size(0)
+, Align(0)
+, Offset(0)
+{}
+
+/// ApplyToFields - Target the visitor to the fields of the TypeDesc.
+///
+void TypeDesc::ApplyToFields(DIVisitor *Visitor) {
+ DebugInfoDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Context);
+ Visitor->Apply(Name);
+ DebugInfoDesc* Tmp = File;
+ Visitor->Apply(Tmp);
+ File = (CompileUnitDesc*)Tmp;
+ Visitor->Apply(Line);
+ Visitor->Apply(Size);
+ Visitor->Apply(Align);
+ Visitor->Apply(Offset);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *TypeDesc::getDescString() const {
+ return "llvm.dbg.type";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *TypeDesc::getTypeString() const {
+ return "llvm.dbg.type.type";
+}
+
+#ifndef NDEBUG
+void TypeDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Context(" << Context << "), "
+ << "Name(\"" << Name << "\"), "
+ << "File(" << File << "), "
+ << "Line(" << Line << "), "
+ << "Size(" << Size << "), "
+ << "Align(" << Align << "), "
+ << "Offset(" << Offset << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+BasicTypeDesc::BasicTypeDesc()
+: TypeDesc(DW_TAG_base_type)
+, Encoding(0)
+{}
+
+// Implement isa/cast/dyncast.
+bool BasicTypeDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_base_type;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the BasicTypeDesc.
+///
+void BasicTypeDesc::ApplyToFields(DIVisitor *Visitor) {
+ TypeDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Encoding);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *BasicTypeDesc::getDescString() const {
+ return "llvm.dbg.basictype";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *BasicTypeDesc::getTypeString() const {
+ return "llvm.dbg.basictype.type";
+}
+
+#ifndef NDEBUG
+void BasicTypeDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Context(" << getContext() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "Size(" << getSize() << "), "
+ << "Encoding(" << Encoding << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+DerivedTypeDesc::DerivedTypeDesc(unsigned T)
+: TypeDesc(T)
+, FromType(NULL)
+{}
+
+// Implement isa/cast/dyncast.
+bool DerivedTypeDesc::classof(const DebugInfoDesc *D) {
+ unsigned T = D->getTag();
+ switch (T) {
+ case DW_TAG_typedef:
+ case DW_TAG_pointer_type:
+ case DW_TAG_reference_type:
+ case DW_TAG_const_type:
+ case DW_TAG_volatile_type:
+ case DW_TAG_restrict_type:
+ case DW_TAG_member:
+ return true;
+ default: break;
+ }
+ return false;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the DerivedTypeDesc.
+///
+void DerivedTypeDesc::ApplyToFields(DIVisitor *Visitor) {
+ TypeDesc::ApplyToFields(Visitor);
+
+ DebugInfoDesc* Tmp = FromType;
+ Visitor->Apply(Tmp);
+ FromType = (TypeDesc*)Tmp;
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *DerivedTypeDesc::getDescString() const {
+ return "llvm.dbg.derivedtype";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *DerivedTypeDesc::getTypeString() const {
+ return "llvm.dbg.derivedtype.type";
+}
+
+#ifndef NDEBUG
+void DerivedTypeDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Context(" << getContext() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "Size(" << getSize() << "), "
+ << "File(" << getFile() << "), "
+ << "Line(" << getLine() << "), "
+ << "FromType(" << FromType << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+CompositeTypeDesc::CompositeTypeDesc(unsigned T)
+: DerivedTypeDesc(T)
+, IsVector(false)
+, Elements()
+{}
+
+// Implement isa/cast/dyncast.
+bool CompositeTypeDesc::classof(const DebugInfoDesc *D) {
+ unsigned T = D->getTag();
+ switch (T) {
+ case DW_TAG_array_type:
+ case DW_TAG_structure_type:
+ case DW_TAG_union_type:
+ case DW_TAG_enumeration_type:
+ return true;
+ default: break;
+ }
+ return false;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the CompositeTypeDesc.
+///
+void CompositeTypeDesc::ApplyToFields(DIVisitor *Visitor) {
+ DerivedTypeDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(IsVector);
+ Visitor->Apply(Elements);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *CompositeTypeDesc::getDescString() const {
+ return "llvm.dbg.compositetype";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *CompositeTypeDesc::getTypeString() const {
+ return "llvm.dbg.compositetype.type";
+}
+
+#ifndef NDEBUG
+void CompositeTypeDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Context(" << getContext() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "Size(" << getSize() << "), "
+ << "File(" << getFile() << "), "
+ << "Line(" << getLine() << "), "
+ << "FromType(" << getFromType() << "), "
+ << "Elements.size(" << Elements.size() << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+SubrangeDesc::SubrangeDesc()
+: DebugInfoDesc(DW_TAG_subrange_type)
+, Lo(0)
+, Hi(0)
+{}
+
+// Implement isa/cast/dyncast.
+bool SubrangeDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_subrange_type;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the SubrangeDesc.
+///
+void SubrangeDesc::ApplyToFields(DIVisitor *Visitor) {
+ DebugInfoDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Lo);
+ Visitor->Apply(Hi);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *SubrangeDesc::getDescString() const {
+ return "llvm.dbg.subrange";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *SubrangeDesc::getTypeString() const {
+ return "llvm.dbg.subrange.type";
+}
+
+#ifndef NDEBUG
+void SubrangeDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Lo(" << Lo << "), "
+ << "Hi(" << Hi << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+EnumeratorDesc::EnumeratorDesc()
+: DebugInfoDesc(DW_TAG_enumerator)
+, Name("")
+, Value(0)
+{}
+
+// Implement isa/cast/dyncast.
+bool EnumeratorDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_enumerator;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the EnumeratorDesc.
+///
+void EnumeratorDesc::ApplyToFields(DIVisitor *Visitor) {
+ DebugInfoDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Name);
+ Visitor->Apply(Value);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *EnumeratorDesc::getDescString() const {
+ return "llvm.dbg.enumerator";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *EnumeratorDesc::getTypeString() const {
+ return "llvm.dbg.enumerator.type";
+}
+
+#ifndef NDEBUG
+void EnumeratorDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Name(" << Name << "), "
+ << "Value(" << Value << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+VariableDesc::VariableDesc(unsigned T)
+: DebugInfoDesc(T)
+, Context(NULL)
+, Name("")
+, File(NULL)
+, Line(0)
+, TyDesc(0)
+{}
+
+// Implement isa/cast/dyncast.
+bool VariableDesc::classof(const DebugInfoDesc *D) {
+ unsigned T = D->getTag();
+ switch (T) {
+ case DW_TAG_auto_variable:
+ case DW_TAG_arg_variable:
+ case DW_TAG_return_variable:
+ return true;
+ default: break;
+ }
+ return false;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the VariableDesc.
+///
+void VariableDesc::ApplyToFields(DIVisitor *Visitor) {
+ DebugInfoDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Context);
+ Visitor->Apply(Name);
+ DebugInfoDesc* Tmp1 = File;
+ Visitor->Apply(Tmp1);
+ File = (CompileUnitDesc*)Tmp1;
+ Visitor->Apply(Line);
+ DebugInfoDesc* Tmp2 = TyDesc;
+ Visitor->Apply(Tmp2);
+ TyDesc = (TypeDesc*)Tmp2;
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *VariableDesc::getDescString() const {
+ return "llvm.dbg.variable";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *VariableDesc::getTypeString() const {
+ return "llvm.dbg.variable.type";
+}
+
+#ifndef NDEBUG
+void VariableDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Context(" << Context << "), "
+ << "Name(\"" << Name << "\"), "
+ << "File(" << File << "), "
+ << "Line(" << Line << "), "
+ << "TyDesc(" << TyDesc << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+GlobalDesc::GlobalDesc(unsigned T)
+: AnchoredDesc(T)
+, Context(0)
+, Name("")
+, File(NULL)
+, Line(0)
+, TyDesc(NULL)
+, IsStatic(false)
+, IsDefinition(false)
+{}
+
+/// ApplyToFields - Target the visitor to the fields of the global.
+///
+void GlobalDesc::ApplyToFields(DIVisitor *Visitor) {
+ AnchoredDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Context);
+ Visitor->Apply(Name);
+ DebugInfoDesc* Tmp1 = File;
+ Visitor->Apply(Tmp1);
+ File = (CompileUnitDesc*)Tmp1;
+ Visitor->Apply(Line);
+ DebugInfoDesc* Tmp2 = TyDesc;
+ Visitor->Apply(Tmp2);
+ TyDesc = (TypeDesc*)Tmp2;
+ Visitor->Apply(IsStatic);
+ Visitor->Apply(IsDefinition);
+}
+
+//===----------------------------------------------------------------------===//
+
+GlobalVariableDesc::GlobalVariableDesc()
+: GlobalDesc(DW_TAG_variable)
+, Global(NULL)
+{}
+
+// Implement isa/cast/dyncast.
+bool GlobalVariableDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_variable;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the GlobalVariableDesc.
+///
+void GlobalVariableDesc::ApplyToFields(DIVisitor *Visitor) {
+ GlobalDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Global);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *GlobalVariableDesc::getDescString() const {
+ return "llvm.dbg.global_variable";
+}
+
+/// getTypeString - Return a string used to label this descriptors type.
+///
+const char *GlobalVariableDesc::getTypeString() const {
+ return "llvm.dbg.global_variable.type";
+}
+
+/// getAnchorString - Return a string used to label this descriptor's anchor.
+///
+const char *GlobalVariableDesc::AnchorString = "llvm.dbg.global_variables";
+const char *GlobalVariableDesc::getAnchorString() const {
+ return AnchorString;
+}
+
+#ifndef NDEBUG
+void GlobalVariableDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Anchor(" << getAnchor() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "File(" << getFile() << "),"
+ << "Line(" << getLine() << "),"
+ << "Type(\"" << getType() << "\"), "
+ << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
+ << "IsDefinition(" << (isDefinition() ? "true" : "false") << "), "
+ << "Global(" << Global << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+SubprogramDesc::SubprogramDesc()
+: GlobalDesc(DW_TAG_subprogram)
+{}
+
+// Implement isa/cast/dyncast.
+bool SubprogramDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_subprogram;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the
+/// SubprogramDesc.
+void SubprogramDesc::ApplyToFields(DIVisitor *Visitor) {
+ GlobalDesc::ApplyToFields(Visitor);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *SubprogramDesc::getDescString() const {
+ return "llvm.dbg.subprogram";
+}
+
+/// getTypeString - Return a string used to label this descriptors type.
+///
+const char *SubprogramDesc::getTypeString() const {
+ return "llvm.dbg.subprogram.type";
+}
+
+/// getAnchorString - Return a string used to label this descriptor's anchor.
+///
+const char *SubprogramDesc::AnchorString = "llvm.dbg.subprograms";
+const char *SubprogramDesc::getAnchorString() const {
+ return AnchorString;
+}
+
+#ifndef NDEBUG
+void SubprogramDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Anchor(" << getAnchor() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "File(" << getFile() << "),"
+ << "Line(" << getLine() << "),"
+ << "Type(\"" << getType() << "\"), "
+ << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
+ << "IsDefinition(" << (isDefinition() ? "true" : "false") << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+BlockDesc::BlockDesc()
+: DebugInfoDesc(DW_TAG_lexical_block)
+, Context(NULL)
+{}
+
+// Implement isa/cast/dyncast.
+bool BlockDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_lexical_block;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the BlockDesc.
+///
+void BlockDesc::ApplyToFields(DIVisitor *Visitor) {
+ DebugInfoDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Context);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *BlockDesc::getDescString() const {
+ return "llvm.dbg.block";
+}
+
+/// getTypeString - Return a string used to label this descriptors type.
+///
+const char *BlockDesc::getTypeString() const {
+ return "llvm.dbg.block.type";
+}
+
+#ifndef NDEBUG
+void BlockDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "),"
+ << "Context(" << Context << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+DebugInfoDesc *DIDeserializer::Deserialize(Value *V) {
+ return Deserialize(getGlobalVariable(V));
+}
+DebugInfoDesc *DIDeserializer::Deserialize(GlobalVariable *GV) {
+ // Handle NULL.
+ if (!GV) return NULL;
+
+ // Check to see if it has been already deserialized.
+ DebugInfoDesc *&Slot = GlobalDescs[GV];
+ if (Slot) return Slot;
+
+ // Get the Tag from the global.
+ unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
+
+ // Create an empty instance of the correct sort.
+ Slot = DebugInfoDesc::DescFactory(Tag);
+
+ // If not a user defined descriptor.
+ if (Slot) {
+ // Deserialize the fields.
+ DIDeserializeVisitor DRAM(*this, GV);
+ DRAM.ApplyToFields(Slot);
+ }
+
+ return Slot;
+}
+
+//===----------------------------------------------------------------------===//
+
+/// getStrPtrType - Return a "sbyte *" type.
+///
+const PointerType *DISerializer::getStrPtrType() {
+ // If not already defined.
+ if (!StrPtrTy) {
+ // Construct the pointer to signed bytes.
+ StrPtrTy = PointerType::get(Type::SByteTy);
+ }
+
+ return StrPtrTy;
+}
+
+/// getEmptyStructPtrType - Return a "{ }*" type.
+///
+const PointerType *DISerializer::getEmptyStructPtrType() {
+ // If not already defined.
+ if (!EmptyStructPtrTy) {
+ // Construct the empty structure type.
+ const StructType *EmptyStructTy =
+ StructType::get(std::vector<const Type*>());
+ // Construct the pointer to empty structure type.
+ EmptyStructPtrTy = PointerType::get(EmptyStructTy);
+ }
+
+ return EmptyStructPtrTy;
+}
+
+/// getTagType - Return the type describing the specified descriptor (via tag.)
+///
+const StructType *DISerializer::getTagType(DebugInfoDesc *DD) {
+ // Attempt to get the previously defined type.
+ StructType *&Ty = TagTypes[DD->getTag()];
+
+ // If not already defined.
+ if (!Ty) {
+ // Set up fields vector.
+ std::vector<const Type*> Fields;
+ // Get types of fields.
+ DIGetTypesVisitor GTAM(*this, Fields);
+ GTAM.ApplyToFields(DD);
+
+ // Construct structured type.
+ Ty = StructType::get(Fields);
+
+ // Register type name with module.
+ M->addTypeName(DD->getTypeString(), Ty);
+ }
+
+ return Ty;
+}
+
+/// getString - Construct the string as constant string global.
+///
+Constant *DISerializer::getString(const std::string &String) {
+ // Check string cache for previous edition.
+ Constant *&Slot = StringCache[String];
+ // Return Constant if previously defined.
+ if (Slot) return Slot;
+ // If empty string then use a sbyte* null instead.
+ if (String.empty()) {
+ Slot = ConstantPointerNull::get(getStrPtrType());
+ } else {
+ // Construct string as an llvm constant.
+ Constant *ConstStr = ConstantArray::get(String);
+ // Otherwise create and return a new string global.
+ GlobalVariable *StrGV = new GlobalVariable(ConstStr->getType(), true,
+ GlobalVariable::InternalLinkage,
+ ConstStr, "str", M);
+ StrGV->setSection("llvm.metadata");
+ // Convert to generic string pointer.
+ Slot = ConstantExpr::getCast(StrGV, getStrPtrType());
+ }
+ return Slot;
+
+}
+
+/// Serialize - Recursively cast the specified descriptor into a GlobalVariable
+/// so that it can be serialized to a .bc or .ll file.
+GlobalVariable *DISerializer::Serialize(DebugInfoDesc *DD) {
+ // Check if the DebugInfoDesc is already in the map.
+ GlobalVariable *&Slot = DescGlobals[DD];
+
+ // See if DebugInfoDesc exists, if so return prior GlobalVariable.
+ if (Slot) return Slot;
+
+ // Get the type associated with the Tag.
+ const StructType *Ty = getTagType(DD);
+
+ // Create the GlobalVariable early to prevent infinite recursion.
+ GlobalVariable *GV = new GlobalVariable(Ty, true, DD->getLinkage(),
+ NULL, DD->getDescString(), M);
+ GV->setSection("llvm.metadata");
+
+ // Insert new GlobalVariable in DescGlobals map.
+ Slot = GV;
+
+ // Set up elements vector
+ std::vector<Constant*> Elements;
+ // Add fields.
+ DISerializeVisitor SRAM(*this, Elements);
+ SRAM.ApplyToFields(DD);
+
+ // Set the globals initializer.
+ GV->setInitializer(ConstantStruct::get(Ty, Elements));
+
+ return GV;
+}
+
+//===----------------------------------------------------------------------===//
+
+/// Verify - Return true if the GlobalVariable appears to be a valid
+/// serialization of a DebugInfoDesc.
+bool DIVerifier::Verify(Value *V) {
+ return !V || Verify(getGlobalVariable(V));
+}
+bool DIVerifier::Verify(GlobalVariable *GV) {
+ // NULLs are valid.
+ if (!GV) return true;
+
+ // Check prior validity.
+ unsigned &ValiditySlot = Validity[GV];
+
+ // If visited before then use old state.
+ if (ValiditySlot) return ValiditySlot == Valid;
+
+ // Assume validity for the time being (recursion.)
+ ValiditySlot = Valid;
+
+ // Make sure the global is internal or link once (anchor.)
+ if (GV->getLinkage() != GlobalValue::InternalLinkage &&
+ GV->getLinkage() != GlobalValue::LinkOnceLinkage) {
+ ValiditySlot = Invalid;
+ return false;
+ }
+
+ // Get the Tag
+ unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
+
+ // Check for user defined descriptors.
+ if (Tag == DW_TAG_invalid) return true;
+
+ // Construct an empty DebugInfoDesc.
+ DebugInfoDesc *DD = DebugInfoDesc::DescFactory(Tag);
+
+ // Allow for user defined descriptors.
+ if (!DD) return true;
+
+ // Get the initializer constant.
+ ConstantStruct *CI = cast<ConstantStruct>(GV->getInitializer());
+
+ // Get the operand count.
+ unsigned N = CI->getNumOperands();
+
+ // Get the field count.
+ unsigned &CountSlot = Counts[Tag];
+ if (!CountSlot) {
+ // Check the operand count to the field count
+ DICountVisitor CTAM;
+ CTAM.ApplyToFields(DD);
+ CountSlot = CTAM.getCount();
+ }
+
+ // Field count must be at most equal operand count.
+ if (CountSlot > N) {
+ delete DD;
+ ValiditySlot = Invalid;
+ return false;
+ }
+
+ // Check each field for valid type.
+ DIVerifyVisitor VRAM(*this, GV);
+ VRAM.ApplyToFields(DD);
+
+ // Release empty DebugInfoDesc.
+ delete DD;
+
+ // If fields are not valid.
+ if (!VRAM.isValid()) {
+ ValiditySlot = Invalid;
+ return false;
+ }
+
+ return true;
+}
+
+//===----------------------------------------------------------------------===//
+
+DebugScope::~DebugScope() {
+ for (unsigned i = 0, N = Scopes.size(); i < N; ++i) delete Scopes[i];
+ for (unsigned j = 0, M = Variables.size(); j < M; ++j) delete Variables[j];
+}
+
+//===----------------------------------------------------------------------===//
+
+MachineDebugInfo::MachineDebugInfo()
+: DR()
+, VR()
+, CompileUnits()
+, Directories()
+, SourceFiles()
+, Lines()
+, LabelID(0)
+, ScopeMap()
+, RootScope(NULL)
+, FrameMoves()
+{}
+MachineDebugInfo::~MachineDebugInfo() {
+
+}
+
+/// doInitialization - Initialize the debug state for a new module.
+///
+bool MachineDebugInfo::doInitialization() {
+ return false;
+}
+
+/// doFinalization - Tear down the debug state after completion of a module.
+///
+bool MachineDebugInfo::doFinalization() {
+ return false;
+}
+
+/// BeginFunction - Begin gathering function debug information.
+///
+void MachineDebugInfo::BeginFunction(MachineFunction *MF) {
+ // Coming soon.
+}
+
+/// MachineDebugInfo::EndFunction - Discard function debug information.
+///
+void MachineDebugInfo::EndFunction() {
+ // Clean up scope information.
+ if (RootScope) {
+ delete RootScope;
+ ScopeMap.clear();
+ RootScope = NULL;
+ }
+
+ // Clean up frame info.
+ for (unsigned i = 0, N = FrameMoves.size(); i < N; ++i) delete FrameMoves[i];
+ FrameMoves.clear();
+}
+
+/// getDescFor - Convert a Value to a debug information descriptor.
+///
+// FIXME - use new Value type when available.
+DebugInfoDesc *MachineDebugInfo::getDescFor(Value *V) {
+ return DR.Deserialize(V);
+}
+
+/// Verify - Verify that a Value is debug information descriptor.
+///
+bool MachineDebugInfo::Verify(Value *V) {
+ return VR.Verify(V);
+}
+
+/// AnalyzeModule - Scan the module for global debug information.
+///
+void MachineDebugInfo::AnalyzeModule(Module &M) {
+ SetupCompileUnits(M);
+}
+
+/// SetupCompileUnits - Set up the unique vector of compile units.
+///
+void MachineDebugInfo::SetupCompileUnits(Module &M) {
+ std::vector<CompileUnitDesc *>CU = getAnchoredDescriptors<CompileUnitDesc>(M);
+
+ for (unsigned i = 0, N = CU.size(); i < N; i++) {
+ CompileUnits.insert(CU[i]);
+ }
+}
+
+/// getCompileUnits - Return a vector of debug compile units.
+///
+const UniqueVector<CompileUnitDesc *> MachineDebugInfo::getCompileUnits()const{
+ return CompileUnits;
+}
+
+/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
+/// named GlobalVariable.
+std::vector<GlobalVariable*>
+MachineDebugInfo::getGlobalVariablesUsing(Module &M,
+ const std::string &RootName) {
+ return ::getGlobalVariablesUsing(M, RootName);
+}
+
+/// RecordLabel - Records location information and associates it with a
+/// debug label. Returns a unique label ID used to generate a label and
+/// provide correspondence to the source line list.
+unsigned MachineDebugInfo::RecordLabel(unsigned Line, unsigned Column,
+ unsigned Source) {
+ unsigned ID = NextLabelID();
+ Lines.push_back(new SourceLineInfo(Line, Column, Source, ID));
+ return ID;
+}
+
+/// RecordSource - Register a source file with debug info. Returns an source
+/// ID.
+unsigned MachineDebugInfo::RecordSource(const std::string &Directory,
+ const std::string &Source) {
+ unsigned DirectoryID = Directories.insert(Directory);
+ return SourceFiles.insert(SourceFileInfo(DirectoryID, Source));
+}
+unsigned MachineDebugInfo::RecordSource(const CompileUnitDesc *CompileUnit) {
+ return RecordSource(CompileUnit->getDirectory(),
+ CompileUnit->getFileName());
+}
+
+/// RecordRegionStart - Indicate the start of a region.
+///
+unsigned MachineDebugInfo::RecordRegionStart(Value *V) {
+ // FIXME - need to be able to handle split scopes because of bb cloning.
+ DebugInfoDesc *ScopeDesc = DR.Deserialize(V);
+ DebugScope *Scope = getOrCreateScope(ScopeDesc);
+ unsigned ID = NextLabelID();
+ if (!Scope->getStartLabelID()) Scope->setStartLabelID(ID);
+ return ID;
+}
+
+/// RecordRegionEnd - Indicate the end of a region.
+///
+unsigned MachineDebugInfo::RecordRegionEnd(Value *V) {
+ // FIXME - need to be able to handle split scopes because of bb cloning.
+ DebugInfoDesc *ScopeDesc = DR.Deserialize(V);
+ DebugScope *Scope = getOrCreateScope(ScopeDesc);
+ unsigned ID = NextLabelID();
+ Scope->setEndLabelID(ID);
+ return ID;
+}
+
+/// RecordVariable - Indicate the declaration of a local variable.
+///
+void MachineDebugInfo::RecordVariable(Value *V, unsigned FrameIndex) {
+ VariableDesc *VD = cast<VariableDesc>(DR.Deserialize(V));
+ DebugScope *Scope = getOrCreateScope(VD->getContext());
+ DebugVariable *DV = new DebugVariable(VD, FrameIndex);
+ Scope->AddVariable(DV);
+}
+
+/// getOrCreateScope - Returns the scope associated with the given descriptor.
+///
+DebugScope *MachineDebugInfo::getOrCreateScope(DebugInfoDesc *ScopeDesc) {
+ DebugScope *&Slot = ScopeMap[ScopeDesc];
+ if (!Slot) {
+ // FIXME - breaks down when the context is an inlined function.
+ DebugInfoDesc *ParentDesc = NULL;
+ if (BlockDesc *Block = dyn_cast<BlockDesc>(ScopeDesc)) {
+ ParentDesc = Block->getContext();
+ }
+ DebugScope *Parent = ParentDesc ? getOrCreateScope(ParentDesc) : NULL;
+ Slot = new DebugScope(Parent, ScopeDesc);
+ if (Parent) {
+ Parent->AddScope(Slot);
+ } else if (RootScope) {
+ // FIXME - Add inlined function scopes to the root so we can delete
+ // them later. Long term, handle inlined functions properly.
+ RootScope->AddScope(Slot);
+ } else {
+ // First function is top level function.
+ RootScope = Slot;
+ }
+ }
+ return Slot;
+}
+
+
projects / oota-llvm.git / blobdiff