#include "llvm/Constants.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;
// Handle the Pass registration stuff necessary to use TargetData's.
//===----------------------------------------------------------------------===//
-/// getGlobalVariablesUsing - Return all of the global variables which have the
+/// 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 global variable then add to result.
+ // 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 - Return all of the global variables that use the
-/// named global variable.
+/// 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; // Global variables matching criteria.
+ std::vector<GlobalVariable*> Result; // GlobalVariables matching criteria.
+
+ std::vector<const Type*> FieldTypes;
+ FieldTypes.push_back(Type::UIntTy);
+ FieldTypes.push_back(PointerType::get(Type::SByteTy));
- // Get the global variable root.
+ // Get the GlobalVariable root.
GlobalVariable *UseRoot = M.getGlobalVariable(RootName,
- StructType::get(std::vector<const Type*>()));
+ StructType::get(FieldTypes));
// If present and linkonce then scan for users.
if (UseRoot && UseRoot->hasLinkOnceLinkage()) {
/// getStringValue - Turn an LLVM constant pointer that eventually points to a
/// global into a string value. Return an empty string if we can't do it.
///
-const static std::string getStringValue(Value *V, unsigned Offset = 0) {
+static const std::string getStringValue(Value *V, unsigned Offset = 0) {
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
if (GV->hasInitializer() && isa<ConstantArray>(GV->getInitializer())) {
ConstantArray *Init = cast<ConstantArray>(GV->getInitializer());
return "";
}
-/// getGlobalValue - Return either a direct or cast Global value.
+/// isStringValue - Return true if the given value can be coerced to a string.
///
-static GlobalVariable *getGlobalValue(Value *V) {
+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;
+}
+
+/// 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)) {
- return CE->getOpcode() == Instruction::Cast ? dyn_cast<GlobalVariable>(V)
- : NULL;
+ 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));
+}
//===----------------------------------------------------------------------===//
-DebugInfoWrapper::DebugInfoWrapper(GlobalVariable *G)
-: GV(G)
-, IC(dyn_cast<ConstantStruct>(GV->getInitializer())) {
- assert(IC && "llvm.db.global is missing structured constant");
+/// 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.
+ ///
+ virtual void Apply(int &Field) { ++Count; }
+ virtual void Apply(unsigned &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; }
+};
+
//===----------------------------------------------------------------------===//
+/// 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.
+
+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.
+ ///
+ 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(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 = getStringValue(C);
+ }
+ 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);
+ }
+};
-CompileUnitWrapper::CompileUnitWrapper(GlobalVariable *G)
-: DebugInfoWrapper(G)
-{
- // FIXME - should probably ease up on the number of operands (version.)
- assert(IC->getNumOperands() == N_op &&
- "Compile unit does not have correct number of operands");
+//===----------------------------------------------------------------------===//
+/// 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.
+ ///
+ 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(uint64_t &Field) {
+ Elements.push_back(ConstantUInt::get(Type::UIntTy, 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 the convert to global.
+ if (Field) GV = SR.Serialize(Field);
+
+ // FIXME - At some point should use specific type.
+ const PointerType *EmptyTy = SR.getEmptyStructPtrType();
+
+ if (GV) {
+ // Set to pointer to global.
+ Elements.push_back(ConstantExpr::getCast(GV, EmptyTy));
+ } else {
+ // Use NULL.
+ Elements.push_back(ConstantPointerNull::get(EmptyTy));
+ }
+ }
+ 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));
+ }
+ }
+};
+
+//===----------------------------------------------------------------------===//
+/// 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(uint64_t &Field) {
+ Fields.push_back(Type::UIntTy);
+ }
+ 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);
+ }
+};
+
+//===----------------------------------------------------------------------===//
+/// 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(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 && 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);
+ }
+};
+
+
+//===----------------------------------------------------------------------===//
+
+/// TagFromGlobal - Returns the Tag number from a debug info descriptor
+/// GlobalVariable.
+unsigned DebugInfoDesc::TagFromGlobal(GlobalVariable *GV) {
+ ConstantUInt *C = getUIntOperand(GV, 0);
+ return C ? (unsigned)C->getValue() : (unsigned)DIInvalid;
}
-/// getTag - Return the compile unit's tag number. Currently should be
-/// DW_TAG_variable.
-unsigned CompileUnitWrapper::getTag() const {
- return cast<ConstantUInt>(IC->getOperand(Tag_op))->getValue();
+/// 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 DI_TAG_anchor: return new AnchorDesc();
+ case DI_TAG_compile_unit: return new CompileUnitDesc();
+ case DI_TAG_global_variable: return new GlobalVariableDesc();
+ case DI_TAG_subprogram: return new SubprogramDesc();
+ case DI_TAG_basictype: return new BasicTypeDesc();
+ default: break;
+ }
+ return NULL;
}
-/// isCorrectDebugVersion - Return true if is the correct llvm debug version.
-/// Currently the value is 0 (zero.) If the value is is not correct then
-/// ignore all debug information.
-bool CompileUnitWrapper::isCorrectDebugVersion() const {
- return cast<ConstantUInt>(IC->getOperand(Version_op))->getValue() == 0;
+/// getLinkage - get linkage appropriate for this type of descriptor.
+///
+GlobalValue::LinkageTypes DebugInfoDesc::getLinkage() const {
+ return GlobalValue::InternalLinkage;
}
-/// getLanguage - Return the compile unit's language number (ex. DW_LANG_C89.)
+/// ApplyToFields - Target the vistor to the fields of the descriptor.
///
-unsigned CompileUnitWrapper::getLanguage() const {
- return cast<ConstantUInt>(IC->getOperand(Language_op))->getValue();
+void DebugInfoDesc::ApplyToFields(DIVisitor *Visitor) {
+ Visitor->Apply(Tag);
}
-/// getFileName - Return the compile unit's file name.
+//===----------------------------------------------------------------------===//
+
+/// getLinkage - get linkage appropriate for this type of descriptor.
///
-const std::string CompileUnitWrapper::getFileName() const {
- return getStringValue(IC->getOperand(FileName_op));
+GlobalValue::LinkageTypes AnchorDesc::getLinkage() const {
+ return GlobalValue::LinkOnceLinkage;
}
-/// getDirectory - Return the compile unit's file directory.
+/// ApplyToFields - Target the visitor to the fields of the TransUnitDesc.
///
-const std::string CompileUnitWrapper::getDirectory() const {
- return getStringValue(IC->getOperand(Directory_op));
+void AnchorDesc::ApplyToFields(DIVisitor *Visitor) {
+ DebugInfoDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Name);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *AnchorDesc::getDescString() const {
+ return Name.c_str();
+}
+
+/// 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() << " "
+ << "Tag(" << getTag() << "), "
+ << "Name(" << Name << ")\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);
+
+ Visitor->Apply((DebugInfoDesc *&)Anchor);
+}
+
+//===----------------------------------------------------------------------===//
+
+CompileUnitDesc::CompileUnitDesc()
+: AnchoredDesc(DI_TAG_compile_unit)
+, DebugVersion(LLVMDebugVersion)
+, Language(0)
+, FileName("")
+, Directory("")
+, Producer("")
+{}
+
+/// DebugVersionFromGlobal - Returns the version number from a compile unit
+/// GlobalVariable.
+unsigned CompileUnitDesc::DebugVersionFromGlobal(GlobalVariable *GV) {
+ ConstantUInt *C = getUIntOperand(GV, 2);
+ return C ? (unsigned)C->getValue() : (unsigned)DIInvalid;
}
-/// getProducer - Return the compile unit's generator name.
+/// ApplyToFields - Target the visitor to the fields of the CompileUnitDesc.
///
-const std::string CompileUnitWrapper::getProducer() const {
- return getStringValue(IC->getOperand(Producer_op));
+void CompileUnitDesc::ApplyToFields(DIVisitor *Visitor) {
+ AnchoredDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(DebugVersion);
+ 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::getAnchorString() const {
+ return "llvm.dbg.compile_units";
+}
+
+#ifndef NDEBUG
+void CompileUnitDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Tag(" << getTag() << "), "
+ << "Anchor(" << getAnchor() << "), "
+ << "DebugVersion(" << DebugVersion << "), "
+ << "Language(" << Language << "), "
+ << "FileName(\"" << FileName << "\"), "
+ << "Directory(\"" << Directory << "\"), "
+ << "Producer(\"" << Producer << "\")\n";
+}
+#endif
+
//===----------------------------------------------------------------------===//
-GlobalWrapper::GlobalWrapper(GlobalVariable *G)
-: DebugInfoWrapper(G)
-{
- // FIXME - should probably ease up on the number of operands (version.)
- assert(IC->getNumOperands() == N_op &&
- "Global does not have correct number of operands");
+//===----------------------------------------------------------------------===//
+
+TypeDesc::TypeDesc(unsigned T)
+: DebugInfoDesc(T)
+, Context(NULL)
+, Name("")
+, Size(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);
+ Visitor->Apply(Size);
}
-/// getTag - Return the global's tag number. Currently should be
-/// DW_TAG_variable or DW_TAG_subprogram.
-unsigned GlobalWrapper::getTag() const {
- return cast<ConstantUInt>(IC->getOperand(Tag_op))->getValue();
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *TypeDesc::getDescString() const {
+ return "llvm.dbg.type";
}
-/// getContext - Return the "lldb.compile_unit" context global.
+/// getTypeString - Return a string used to label this descriptor's type.
///
-GlobalVariable *GlobalWrapper::getContext() const {
- return getGlobalValue(IC->getOperand(Context_op));
+const char *TypeDesc::getTypeString() const {
+ return "llvm.dbg.type.type";
}
-/// getName - Return the name of the global.
+#ifndef NDEBUG
+void TypeDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Tag(" << getTag() << "), "
+ << "Context(" << Context << "), "
+ << "Name(\"" << Name << "\"), "
+ << "Size(" << Size << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+BasicTypeDesc::BasicTypeDesc()
+: TypeDesc(DI_TAG_basictype)
+, Encoding(0)
+{}
+
+/// ApplyToFields - Target the visitor to the fields of the BasicTypeDesc.
///
-const std::string GlobalWrapper::getName() const {
- return getStringValue(IC->getOperand(Name_op));
+void BasicTypeDesc::ApplyToFields(DIVisitor *Visitor) {
+ TypeDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Encoding);
+}
+
+#ifndef NDEBUG
+void BasicTypeDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Tag(" << getTag() << "), "
+ << "Context(" << getContext() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "Size(" << getSize() << "), "
+ << "Encoding(" << Encoding << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+GlobalDesc::GlobalDesc(unsigned T)
+: AnchoredDesc(T)
+, Context(0)
+, Name("")
+, 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);
+ Visitor->Apply((DebugInfoDesc *&)TyDesc);
+ Visitor->Apply(IsStatic);
+ Visitor->Apply(IsDefinition);
+}
+
+//===----------------------------------------------------------------------===//
+
+GlobalVariableDesc::GlobalVariableDesc()
+: GlobalDesc(DI_TAG_global_variable)
+, Global(NULL)
+{}
+
+/// ApplyToFields - Target the visitor to the fields of the GlobalVariableDesc.
+///
+void GlobalVariableDesc::ApplyToFields(DIVisitor *Visitor) {
+ GlobalDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Global);
+ Visitor->Apply(Line);
+}
+
+/// 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::getAnchorString() const {
+ return "llvm.dbg.global_variables";
+}
+
+#ifndef NDEBUG
+void GlobalVariableDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Tag(" << getTag() << "), "
+ << "Anchor(" << getAnchor() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "Type(\"" << getTypeDesc() << "\"), "
+ << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
+ << "IsDefinition(" << (isDefinition() ? "true" : "false") << "), "
+ << "Global(" << Global << "), "
+ << "Line(" << Line << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+SubprogramDesc::SubprogramDesc()
+: GlobalDesc(DI_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::getAnchorString() const {
+ return "llvm.dbg.subprograms";
+}
+
+#ifndef NDEBUG
+void SubprogramDesc::dump() {
+ std::cerr << getDescString() << " "
+ << "Tag(" << getTag() << "), "
+ << "Anchor(" << getAnchor() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "Type(\"" << getTypeDesc() << "\"), "
+ << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
+ << "IsDefinition(" << (isDefinition() ? "true" : "false") << ")\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);
+
+ // Get the debug version if a compile unit.
+ if (Tag == DI_TAG_compile_unit) {
+ DebugVersion = CompileUnitDesc::DebugVersionFromGlobal(GV);
+ }
+
+ // Create an empty instance of the correct sort.
+ Slot = DebugInfoDesc::DescFactory(Tag);
+ assert(Slot && "Unknown Tag");
+
+ // Deserialize the fields.
+ DIDeserializeVisitor DRAM(*this, GV);
+ DRAM.ApplyToFields(Slot);
+
+ return Slot;
}
-/// getType - Return the type of the global.
+//===----------------------------------------------------------------------===//
+
+/// getStrPtrType - Return a "sbyte *" type.
///
-const GlobalVariable *GlobalWrapper::getType() const {
- return getGlobalValue(IC->getOperand(Type_op));
+const PointerType *DISerializer::getStrPtrType() {
+ // If not already defined.
+ if (!StrPtrTy) {
+ // Construct the pointer to signed bytes.
+ StrPtrTy = PointerType::get(Type::SByteTy);
+ }
+
+ return StrPtrTy;
}
-/// isStatic - Return true if the global is static.
+/// getEmptyStructPtrType - Return a "{ }*" type.
///
-bool GlobalWrapper::isStatic() const {
- return cast<ConstantBool>(IC->getOperand(Static_op))->getValue();
+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;
}
-/// isDefinition - Return true if the global is a definition.
+/// getTagType - Return the type describing the specified descriptor (via tag.)
///
-bool GlobalWrapper::isDefinition() const {
- return dyn_cast<ConstantBool>(IC->getOperand(Definition_op))->getValue();
+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;
}
-/// getGlobalVariable - Return the global variable (tag == DW_TAG_variable.)
+/// getString - Construct the string as constant string global.
///
-GlobalVariable *GlobalWrapper::getGlobalVariable() const {
- return getGlobalValue(IC->getOperand(GlobalVariable_op));
+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;
+ // 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);
+ // 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);
+
+ // 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;
+}
+
+//===----------------------------------------------------------------------===//
+
+/// markVisited - Return true if the GlobalVariable hase been "seen" before.
+/// Mark visited otherwise.
+bool DIVerifier::markVisited(GlobalVariable *GV) {
+ // Check if the GlobalVariable is already in the Visited set.
+ std::set<GlobalVariable *>::iterator VI = Visited.lower_bound(GV);
+
+ // See if GlobalVariable exists.
+ bool Exists = VI != Visited.end() && *VI == GV;
+
+ // Insert in set.
+ if (!Exists) Visited.insert(VI, GV);
+
+ return Exists;
+}
+
+/// Verify - Return true if the GlobalVariable appears to be a valid
+/// serialization of a DebugInfoDesc.
+bool DIVerifier::Verify(Value *V) {
+ return Verify(getGlobalVariable(V));
+}
+bool DIVerifier::Verify(GlobalVariable *GV) {
+ // Check if seen before.
+ if (markVisited(GV)) return true;
+
+ // Get the Tag
+ unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
+ if (Tag == DIInvalid) return false;
+
+ // If a compile unit we need the debug version.
+ if (Tag == DI_TAG_compile_unit) {
+ DebugVersion = CompileUnitDesc::DebugVersionFromGlobal(GV);
+ if (DebugVersion == DIInvalid) return false;
+ }
+
+ // Construct an empty DebugInfoDesc.
+ DebugInfoDesc *DD = DebugInfoDesc::DescFactory(Tag);
+ if (!DD) return false;
+
+ // Get the initializer constant.
+ ConstantStruct *CI = cast<ConstantStruct>(GV->getInitializer());
+
+ // Get the operand count.
+ unsigned N = CI->getNumOperands();
+
+ // Get the field count.
+ unsigned &Slot = Counts[Tag];
+ if (!Slot) {
+ // Check the operand count to the field count
+ DICountVisitor CTAM;
+ CTAM.ApplyToFields(DD);
+ Slot = CTAM.getCount();
+ }
+
+ // Field count must equal operand count.
+ if (Slot != N) {
+ delete DD;
+ return false;
+ }
+
+ // Check each field for valid type.
+ DIVerifyVisitor VRAM(*this, GV);
+ VRAM.ApplyToFields(DD);
+
+ // Release empty DebugInfoDesc.
+ delete DD;
+
+ // Return result of field tests.
+ return VRAM.isValid();
}
//===----------------------------------------------------------------------===//
MachineDebugInfo::MachineDebugInfo()
-: CompileUnits()
+: DR()
+, CompileUnits()
, Directories()
, SourceFiles()
, Lines()
return false;
}
+/// 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) {
+ DIVerifier VR;
+ return VR.Verify(V);
+}
+
/// AnalyzeModule - Scan the module for global debug information.
///
void MachineDebugInfo::AnalyzeModule(Module &M) {
/// SetupCompileUnits - Set up the unique vector of compile units.
///
void MachineDebugInfo::SetupCompileUnits(Module &M) {
- // Get vector of all debug compile units.
- std::vector<GlobalVariable*> Globals =
- getGlobalVariablesUsing(M, "llvm.dbg.translation_units");
+ std::vector<CompileUnitDesc *>CU = getAnchoredDescriptors<CompileUnitDesc>(M);
- // Scan all compile unit globals.
- for (unsigned i = 0, N = Globals.size(); i < N; ++i) {
- // Create wrapper for compile unit.
- CompileUnitWrapper CUI(Globals[i]);
- // Add to result.
- if (CUI.isCorrectDebugVersion()) CompileUnits.insert(CUI);
+ for (unsigned i = 0, N = CU.size(); i < N; i++) {
+ CompileUnits.insert(CU[i]);
}
-
- // If there any bad compile units then suppress debug information
- if (CompileUnits.size() != Globals.size()) CompileUnits.reset();
}
/// getCompileUnits - Return a vector of debug compile units.
///
-const UniqueVector<CompileUnitWrapper> MachineDebugInfo::getCompileUnits()const{
+const UniqueVector<CompileUnitDesc *> MachineDebugInfo::getCompileUnits()const{
return CompileUnits;
}
-/// getGlobalVariables - Return a vector of debug global variables.
-///
-std::vector<GlobalWrapper> MachineDebugInfo::getGlobalVariables(Module &M) {
- // Get vector of all debug global objects.
- std::vector<GlobalVariable*> Globals =
- getGlobalVariablesUsing(M, "llvm.dbg.globals");
-
- // Accumulation of global variables.
- std::vector<GlobalWrapper> GlobalVariables;
-
-// FIXME - skip until globals have new format
-#if 0
- // Scan all globals.
- for (unsigned i = 0, N = Globals.size(); i < N; ++i) {
- // Create wrapper for global.
- GlobalWrapper GW(Globals[i]);
- // If the global is a variable then add to result.
- if (GW.getTag() == DW_TAG_variable) GlobalVariables.push_back(GW);
- }
-#endif
-
- return GlobalVariables;
+/// 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);
}
-