return getNodeField(DbgNode, DIVariableInlinedAtIndex);
}
-/// Return the size reported by the variable's type.
+/// \brief Return the size reported by the variable's type.
unsigned DIVariable::getSizeInBits(const DITypeIdentifierMap &Map) {
DIType Ty = getType().resolve(Map);
// Follow derived types until we reach a type that
return isCompositeType() && getTag() == dwarf::DW_TAG_subroutine_type;
}
-/// isBasicType - Return true if the specified tag is legal for
-/// DIBasicType.
bool DIDescriptor::isBasicType() const {
if (!DbgNode)
return false;
}
}
-/// isDerivedType - Return true if the specified tag is legal for DIDerivedType.
bool DIDescriptor::isDerivedType() const {
if (!DbgNode)
return false;
}
}
-/// isCompositeType - Return true if the specified tag is legal for
-/// DICompositeType.
bool DIDescriptor::isCompositeType() const {
if (!DbgNode)
return false;
}
}
-/// isVariable - Return true if the specified tag is legal for DIVariable.
bool DIDescriptor::isVariable() const {
if (!DbgNode)
return false;
}
}
-/// isType - Return true if the specified tag is legal for DIType.
bool DIDescriptor::isType() const {
return isBasicType() || isCompositeType() || isDerivedType();
}
-/// isSubprogram - Return true if the specified tag is legal for
-/// DISubprogram.
bool DIDescriptor::isSubprogram() const {
return DbgNode && getTag() == dwarf::DW_TAG_subprogram;
}
-/// isGlobalVariable - Return true if the specified tag is legal for
-/// DIGlobalVariable.
bool DIDescriptor::isGlobalVariable() const {
return DbgNode && (getTag() == dwarf::DW_TAG_variable ||
getTag() == dwarf::DW_TAG_constant);
}
-/// isScope - Return true if the specified tag is one of the scope
-/// related tag.
bool DIDescriptor::isScope() const {
if (!DbgNode)
return false;
return isType();
}
-/// isTemplateTypeParameter - Return true if the specified tag is
-/// DW_TAG_template_type_parameter.
bool DIDescriptor::isTemplateTypeParameter() const {
return DbgNode && getTag() == dwarf::DW_TAG_template_type_parameter;
}
-/// isTemplateValueParameter - Return true if the specified tag is
-/// DW_TAG_template_value_parameter.
bool DIDescriptor::isTemplateValueParameter() const {
return DbgNode && (getTag() == dwarf::DW_TAG_template_value_parameter ||
getTag() == dwarf::DW_TAG_GNU_template_template_param ||
getTag() == dwarf::DW_TAG_GNU_template_parameter_pack);
}
-/// isCompileUnit - Return true if the specified tag is DW_TAG_compile_unit.
bool DIDescriptor::isCompileUnit() const {
return DbgNode && getTag() == dwarf::DW_TAG_compile_unit;
}
-/// isFile - Return true if the specified tag is DW_TAG_file_type.
bool DIDescriptor::isFile() const {
return DbgNode && getTag() == dwarf::DW_TAG_file_type;
}
-/// isNameSpace - Return true if the specified tag is DW_TAG_namespace.
bool DIDescriptor::isNameSpace() const {
return DbgNode && getTag() == dwarf::DW_TAG_namespace;
}
-/// isLexicalBlockFile - Return true if the specified descriptor is a
-/// lexical block with an extra file.
bool DIDescriptor::isLexicalBlockFile() const {
return DbgNode && getTag() == dwarf::DW_TAG_lexical_block &&
DbgNode->getNumOperands() == 3 && getNumHeaderFields() == 2;
}
-/// isLexicalBlock - Return true if the specified tag is DW_TAG_lexical_block.
bool DIDescriptor::isLexicalBlock() const {
// FIXME: There are always exactly 4 header fields in DILexicalBlock, but
// something relies on this returning true for DILexicalBlockFile.
(getNumHeaderFields() == 2 || getNumHeaderFields() == 4);
}
-/// isSubrange - Return true if the specified tag is DW_TAG_subrange_type.
bool DIDescriptor::isSubrange() const {
return DbgNode && getTag() == dwarf::DW_TAG_subrange_type;
}
-/// isEnumerator - Return true if the specified tag is DW_TAG_enumerator.
bool DIDescriptor::isEnumerator() const {
return DbgNode && getTag() == dwarf::DW_TAG_enumerator;
}
-/// isObjCProperty - Return true if the specified tag is DW_TAG_APPLE_property.
bool DIDescriptor::isObjCProperty() const {
return DbgNode && getTag() == dwarf::DW_TAG_APPLE_property;
}
-/// \brief Return true if the specified tag is DW_TAG_imported_module or
-/// DW_TAG_imported_declaration.
bool DIDescriptor::isImportedEntity() const {
return DbgNode && (getTag() == dwarf::DW_TAG_imported_module ||
getTag() == dwarf::DW_TAG_imported_declaration);
}
-/// \brief Return true if the specified tag is DW_TAG_imported_module or
-/// DW_TAG_imported_declaration.
bool DIDescriptor::isExpression() const {
return DbgNode && (getTag() == dwarf::DW_TAG_expression);
}
// Simple Descriptor Constructors and other Methods
//===----------------------------------------------------------------------===//
-/// replaceAllUsesWith - Replace all uses of the MDNode used by this
-/// type with the one in the passed descriptor.
void DIDescriptor::replaceAllUsesWith(LLVMContext &VMContext, DIDescriptor D) {
assert(DbgNode && "Trying to replace an unverified type!");
DbgNode = DN;
}
-/// replaceAllUsesWith - Replace all uses of the MDNode used by this
-/// type with the one in D.
void DIDescriptor::replaceAllUsesWith(MDNode *D) {
assert(DbgNode && "Trying to replace an unverified type!");
MDNode::deleteTemporary(Node);
}
-/// Verify - Verify that a compile unit is well formed.
bool DICompileUnit::Verify() const {
if (!isCompileUnit())
return false;
return DbgNode->getNumOperands() == 7 && getNumHeaderFields() == 8;
}
-/// Verify - Verify that an ObjC property is well formed.
bool DIObjCProperty::Verify() const {
if (!isObjCProperty())
return false;
return DbgNode->getNumOperands() == 3 && getNumHeaderFields() == 6;
}
-/// Check if a field at position Elt of a MDNode is a MDNode.
+/// \brief Check if a field at position Elt of a MDNode is a MDNode.
+///
/// We currently allow an empty string and an integer.
/// But we don't allow a non-empty string in a MDNode field.
static bool fieldIsMDNode(const MDNode *DbgNode, unsigned Elt) {
return true;
}
-/// Check if a field at position Elt of a MDNode is a MDString.
+/// \brief Check if a field at position Elt of a MDNode is a MDString.
static bool fieldIsMDString(const MDNode *DbgNode, unsigned Elt) {
Value *Fld = getField(DbgNode, Elt);
return !Fld || isa<MDString>(Fld);
}
-/// Check if a value can be a reference to a type.
+/// \brief Check if a value can be a reference to a type.
static bool isTypeRef(const Value *Val) {
return !Val ||
(isa<MDString>(Val) && !cast<MDString>(Val)->getString().empty()) ||
(isa<MDNode>(Val) && DIType(cast<MDNode>(Val)).isType());
}
-/// Check if a field at position Elt of a MDNode can be a reference to a type.
+/// \brief Check if referenced field might be a type.
static bool fieldIsTypeRef(const MDNode *DbgNode, unsigned Elt) {
Value *Fld = getField(DbgNode, Elt);
return isTypeRef(Fld);
}
-/// Check if a value can be a ScopeRef.
+/// \brief Check if a value can be a ScopeRef.
static bool isScopeRef(const Value *Val) {
return !Val ||
(isa<MDString>(Val) && !cast<MDString>(Val)->getString().empty()) ||
isa<MDNode>(Val);
}
-/// Check if a field at position Elt of a MDNode can be a ScopeRef.
+/// \brief Check if a field at position Elt of a MDNode can be a ScopeRef.
static bool fieldIsScopeRef(const MDNode *DbgNode, unsigned Elt) {
Value *Fld = getField(DbgNode, Elt);
return isScopeRef(Fld);
}
-/// Verify - Verify that a type descriptor is well formed.
bool DIType::Verify() const {
if (!isType())
return false;
return false;
}
-/// Verify - Verify that a basic type descriptor is well formed.
bool DIBasicType::Verify() const {
return isBasicType() && DbgNode->getNumOperands() == 3 &&
getNumHeaderFields() == 8;
}
-/// Verify - Verify that a derived type descriptor is well formed.
bool DIDerivedType::Verify() const {
// Make sure DerivedFrom @ field 3 is TypeRef.
if (!fieldIsTypeRef(DbgNode, 3))
getNumHeaderFields() <= 8;
}
-/// Verify - Verify that a composite type descriptor is well formed.
bool DICompositeType::Verify() const {
if (!isCompositeType())
return false;
return DbgNode->getNumOperands() == 8 && getNumHeaderFields() == 8;
}
-/// Verify - Verify that a subprogram descriptor is well formed.
bool DISubprogram::Verify() const {
if (!isSubprogram())
return false;
return DbgNode->getNumOperands() == 9 && getNumHeaderFields() == 12;
}
-/// Verify - Verify that a global variable descriptor is well formed.
bool DIGlobalVariable::Verify() const {
if (!isGlobalVariable())
return false;
return DbgNode->getNumOperands() == 6 && getNumHeaderFields() == 7;
}
-/// Verify - Verify that a variable descriptor is well formed.
bool DIVariable::Verify() const {
if (!isVariable())
return false;
return getInlinedAt() != nullptr && DbgNode->getNumOperands() == 5;
}
-/// Verify - Verify that a variable descriptor is well formed.
bool DIExpression::Verify() const {
// Empty DIExpressions may be represented as a nullptr.
if (!DbgNode)
return isExpression() && DbgNode->getNumOperands() == 1;
}
-/// Verify - Verify that a location descriptor is well formed.
bool DILocation::Verify() const {
if (!DbgNode)
return false;
return DbgNode->getNumOperands() == 4;
}
-/// Verify - Verify that a namespace descriptor is well formed.
bool DINameSpace::Verify() const {
if (!isNameSpace())
return false;
return DbgNode->getNumOperands() == 3 && getNumHeaderFields() == 3;
}
-/// \brief Retrieve the MDNode for the directory/file pair.
MDNode *DIFile::getFileNode() const { return getNodeField(DbgNode, 1); }
-/// \brief Verify that the file descriptor is well formed.
bool DIFile::Verify() const {
return isFile() && DbgNode->getNumOperands() == 2;
}
-/// \brief Verify that the enumerator descriptor is well formed.
bool DIEnumerator::Verify() const {
return isEnumerator() && DbgNode->getNumOperands() == 1 &&
getNumHeaderFields() == 3;
}
-/// \brief Verify that the subrange descriptor is well formed.
bool DISubrange::Verify() const {
return isSubrange() && DbgNode->getNumOperands() == 1 &&
getNumHeaderFields() == 3;
}
-/// \brief Verify that the lexical block descriptor is well formed.
bool DILexicalBlock::Verify() const {
return isLexicalBlock() && DbgNode->getNumOperands() == 3 &&
getNumHeaderFields() == 4;
}
-/// \brief Verify that the file-scoped lexical block descriptor is well formed.
bool DILexicalBlockFile::Verify() const {
return isLexicalBlockFile() && DbgNode->getNumOperands() == 3 &&
getNumHeaderFields() == 2;
}
-/// \brief Verify that the template type parameter descriptor is well formed.
bool DITemplateTypeParameter::Verify() const {
return isTemplateTypeParameter() && DbgNode->getNumOperands() == 4 &&
getNumHeaderFields() == 4;
}
-/// \brief Verify that the template value parameter descriptor is well formed.
bool DITemplateValueParameter::Verify() const {
return isTemplateValueParameter() && DbgNode->getNumOperands() == 5 &&
getNumHeaderFields() == 4;
}
-/// \brief Verify that the imported module descriptor is well formed.
bool DIImportedEntity::Verify() const {
return isImportedEntity() && DbgNode->getNumOperands() == 3 &&
getNumHeaderFields() == 3;
}
-/// getObjCProperty - Return property node, if this ivar is associated with one.
MDNode *DIDerivedType::getObjCProperty() const {
return getNodeField(DbgNode, 4);
}
}
#endif
-/// \brief Set the array of member DITypes.
void DICompositeType::setArraysHelper(MDNode *Elements, MDNode *TParams) {
TrackingVH<MDNode> N(*this);
if (Elements) {
DbgNode = N;
}
-/// Generate a reference to this DIType. Uses the type identifier instead
-/// of the actual MDNode if possible, to help type uniquing.
DIScopeRef DIScope::getRef() const {
if (!isCompositeType())
return DIScopeRef(*this);
return DIScopeRef(DTy.getIdentifier());
}
-/// \brief Set the containing type.
void DICompositeType::setContainingType(DICompositeType ContainingType) {
TrackingVH<MDNode> N(*this);
N->replaceOperandWith(5, ContainingType.getRef());
DbgNode = N;
}
-/// isInlinedFnArgument - Return true if this variable provides debugging
-/// information for an inlined function arguments.
bool DIVariable::isInlinedFnArgument(const Function *CurFn) {
assert(CurFn && "Invalid function");
if (!getContext().isSubprogram())
return !DISubprogram(getContext()).describes(CurFn);
}
-/// describes - Return true if this subprogram provides debugging
-/// information for the function F.
bool DISubprogram::describes(const Function *F) {
assert(F && "Invalid function");
if (F == getFunction())
return getField(DbgNode, 3);
}
-// If the current node has a parent scope then return that,
-// else return an empty scope.
DIScopeRef DIScope::getContext() const {
if (isType())
return DIScopeRef(nullptr);
}
-// If the scope node has a name, return that, else return an empty string.
StringRef DIScope::getName() const {
if (isType())
return DIType(DbgNode).getName();
const_cast<MDNode *>(DbgNode)->replaceOperandWith(5, GlobalVariables);
}
-/// copyWithNewScope - Return a copy of this location, replacing the
-/// current scope with the given one.
DILocation DILocation::copyWithNewScope(LLVMContext &Ctx,
DILexicalBlockFile NewScope) {
SmallVector<Value *, 10> Elts;
return DILocation(NewDIL);
}
-/// computeNewDiscriminator - Generate a new discriminator value for this
-/// file and line location.
unsigned DILocation::computeNewDiscriminator(LLVMContext &Ctx) {
std::pair<const char *, unsigned> Key(getFilename().data(), getLineNumber());
return ++Ctx.pImpl->DiscriminatorTable[Key];
}
-/// fixupSubprogramName - Replace contains special characters used
-/// in a typical Objective-C names with '.' in a given string.
-static void fixupSubprogramName(DISubprogram Fn, SmallVectorImpl<char> &Out) {
- StringRef FName =
- Fn.getFunction() ? Fn.getFunction()->getName() : Fn.getName();
- FName = Function::getRealLinkageName(FName);
-
- StringRef Prefix("llvm.dbg.lv.");
- Out.reserve(FName.size() + Prefix.size());
- Out.append(Prefix.begin(), Prefix.end());
-
- bool isObjCLike = false;
- for (size_t i = 0, e = FName.size(); i < e; ++i) {
- char C = FName[i];
- if (C == '[')
- isObjCLike = true;
-
- if (isObjCLike && (C == '[' || C == ']' || C == ' ' || C == ':' ||
- C == '+' || C == '(' || C == ')'))
- Out.push_back('.');
- else
- Out.push_back(C);
- }
-}
-
-/// getFnSpecificMDNode - Return a NameMDNode, if available, that is
-/// suitable to hold function specific information.
-NamedMDNode *llvm::getFnSpecificMDNode(const Module &M, DISubprogram Fn) {
- SmallString<32> Name;
- fixupSubprogramName(Fn, Name);
- return M.getNamedMetadata(Name.str());
-}
-
-/// getOrInsertFnSpecificMDNode - Return a NameMDNode that is suitable
-/// to hold function specific information.
-NamedMDNode *llvm::getOrInsertFnSpecificMDNode(Module &M, DISubprogram Fn) {
- SmallString<32> Name;
- fixupSubprogramName(Fn, Name);
- return M.getOrInsertNamedMetadata(Name.str());
-}
-
-/// createInlinedVariable - Create a new inlined variable based on current
-/// variable.
-/// @param DV Current Variable.
-/// @param InlinedScope Location at current variable is inlined.
DIVariable llvm::createInlinedVariable(MDNode *DV, MDNode *InlinedScope,
LLVMContext &VMContext) {
assert(DIVariable(DV).Verify() && "Expected a DIVariable");
return Inlined;
}
-/// cleanseInlinedVariable - Remove inlined scope from the variable.
DIVariable llvm::cleanseInlinedVariable(MDNode *DV, LLVMContext &VMContext) {
assert(DIVariable(DV).Verify() && "Expected a DIVariable");
if (!DIVariable(DV).getInlinedAt())
return Cleansed;
}
-/// getDISubprogram - Find subprogram that is enclosing this scope.
DISubprogram llvm::getDISubprogram(const MDNode *Scope) {
DIDescriptor D(Scope);
if (D.isSubprogram())
return DISubprogram();
}
-/// getDICompositeType - Find underlying composite type.
+DISubprogram llvm::getDISubprogram(const Function *F) {
+ // We look for the first instr that has a debug annotation leading back to F.
+ for (auto &BB : *F) {
+ auto Inst = std::find_if(BB.begin(), BB.end(), [](const Instruction &Inst) {
+ return !Inst.getDebugLoc().isUnknown();
+ });
+ if (Inst == BB.end())
+ continue;
+ DebugLoc DLoc = Inst->getDebugLoc();
+ const MDNode *Scope = DLoc.getScopeNode(F->getParent()->getContext());
+ DISubprogram Subprogram = getDISubprogram(Scope);
+ return Subprogram.describes(F) ? Subprogram : DISubprogram();
+ }
+
+ return DISubprogram();
+}
+
DICompositeType llvm::getDICompositeType(DIType T) {
if (T.isCompositeType())
return DICompositeType(T);
return DICompositeType();
}
-/// Update DITypeIdentifierMap by going through retained types of each CU.
DITypeIdentifierMap
llvm::generateDITypeIdentifierMap(const NamedMDNode *CU_Nodes) {
DITypeIdentifierMap Map;
}
}
-/// processModule - Process entire module and collect debug info.
void DebugInfoFinder::processModule(const Module &M) {
InitializeTypeMap(M);
if (NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu")) {
}
}
-/// processLocation - Process DILocation.
void DebugInfoFinder::processLocation(const Module &M, DILocation Loc) {
if (!Loc)
return;
processLocation(M, Loc.getOrigLocation());
}
-/// processType - Process DIType.
void DebugInfoFinder::processType(DIType DT) {
if (!addType(DT))
return;
}
}
-/// processSubprogram - Process DISubprogram.
void DebugInfoFinder::processSubprogram(DISubprogram SP) {
if (!addSubprogram(SP))
return;
}
}
-/// processDeclare - Process DbgDeclareInst.
void DebugInfoFinder::processDeclare(const Module &M,
const DbgDeclareInst *DDI) {
MDNode *N = dyn_cast<MDNode>(DDI->getVariable());
processType(DIVariable(N).getType().resolve(TypeIdentifierMap));
}
-/// addType - Add type into Tys.
bool DebugInfoFinder::addType(DIType DT) {
if (!DT)
return false;
return true;
}
-/// addCompileUnit - Add compile unit into CUs.
bool DebugInfoFinder::addCompileUnit(DICompileUnit CU) {
if (!CU)
return false;
return true;
}
-/// addGlobalVariable - Add global variable into GVs.
bool DebugInfoFinder::addGlobalVariable(DIGlobalVariable DIG) {
if (!DIG)
return false;
return true;
}
-// addSubprogram - Add subprgoram into SPs.
bool DebugInfoFinder::addSubprogram(DISubprogram SP) {
if (!SP)
return false;
// DIDescriptor: dump routines for all descriptors.
//===----------------------------------------------------------------------===//
-/// dump - Print descriptor to dbgs() with a newline.
void DIDescriptor::dump() const {
print(dbgs());
dbgs() << '\n';
}
-/// print - Print descriptor.
void DIDescriptor::print(raw_ostream &OS) const {
if (!DbgNode)
return;
}
}
-/// Specialize constructor to make sure it has the correct type.
template <> DIRef<DIScope>::DIRef(const Value *V) : Val(V) {
assert(isScopeRef(V) && "DIScopeRef should be a MDString or MDNode");
}
assert(isTypeRef(V) && "DITypeRef should be a MDString or MDNode");
}
-/// Specialize getFieldAs to handle fields that are references to DIScopes.
template <>
DIScopeRef DIDescriptor::getFieldAs<DIScopeRef>(unsigned Elt) const {
return DIScopeRef(getField(DbgNode, Elt));
}
-/// Specialize getFieldAs to handle fields that are references to DITypes.
template <> DITypeRef DIDescriptor::getFieldAs<DITypeRef>(unsigned Elt) const {
return DITypeRef(getField(DbgNode, Elt));
}
-/// Strip debug info in the module if it exists.
-/// To do this, we remove all calls to the debugger intrinsics and any named
-/// metadata for debugging. We also remove debug locations for instructions.
-/// Return true if module is modified.
bool llvm::StripDebugInfo(Module &M) {
-
bool Changed = false;
// Remove all of the calls to the debugger intrinsics, and remove them from
return Changed;
}
-/// Return Debug Info Metadata Version by checking module flags.
unsigned llvm::getDebugMetadataVersionFromModule(const Module &M) {
Value *Val = M.getModuleFlag("Debug Info Version");
if (!Val)
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