#include "llvm/ADT/SmallString.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/Constants.h"
+#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
DILexicalBlockFile(DbgNode).Verify() ||
DISubrange(DbgNode).Verify() || DIEnumerator(DbgNode).Verify() ||
DIObjCProperty(DbgNode).Verify() ||
- DIUnspecifiedParameter(DbgNode).Verify() ||
DITemplateTypeParameter(DbgNode).Verify() ||
DITemplateValueParameter(DbgNode).Verify() ||
- DIImportedEntity(DbgNode).Verify());
+ DIImportedEntity(DbgNode).Verify() || DIExpression(DbgNode).Verify());
}
static Value *getField(const MDNode *DbgNode, unsigned Elt) {
}
}
-unsigned DIVariable::getNumAddrElements() const {
- return DbgNode->getNumOperands() - 8;
+static unsigned DIVariableInlinedAtIndex = 4;
+MDNode *DIVariable::getInlinedAt() const {
+ return getNodeField(DbgNode, DIVariableInlinedAtIndex);
}
-/// getInlinedAt - If this variable is inlined then return inline location.
-MDNode *DIVariable::getInlinedAt() const { return getNodeField(DbgNode, 7); }
+/// 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
+ // reports back a size.
+ while (Ty.isDerivedType() && !Ty.getSizeInBits()) {
+ DIDerivedType DT(&*Ty);
+ Ty = DT.getTypeDerivedFrom().resolve(Map);
+ }
+ assert(Ty.getSizeInBits() && "type with size 0");
+ return Ty.getSizeInBits();
+}
+
+uint64_t DIExpression::getElement(unsigned Idx) const {
+ unsigned I = Idx + 1;
+ assert(I < getNumHeaderFields() &&
+ "non-existing complex address element requested");
+ return getHeaderFieldAs<int64_t>(I);
+}
+
+bool DIExpression::isVariablePiece() const {
+ return getNumElements() && getElement(0) == dwarf::DW_OP_piece;
+}
+
+uint64_t DIExpression::getPieceOffset() const {
+ assert(isVariablePiece());
+ return getElement(1);
+}
+
+uint64_t DIExpression::getPieceSize() const {
+ assert(isVariablePiece());
+ return getElement(2);
+}
//===----------------------------------------------------------------------===//
// Predicates
//===----------------------------------------------------------------------===//
+bool DIDescriptor::isSubroutineType() const {
+ return isCompositeType() && getTag() == dwarf::DW_TAG_subroutine_type;
+}
+
/// isBasicType - Return true if the specified tag is legal for
/// DIBasicType.
bool DIDescriptor::isBasicType() const {
getTag() == dwarf::DW_TAG_constant);
}
-/// isUnspecifiedParmeter - Return true if the specified tag is
-/// DW_TAG_unspecified_parameters.
-bool DIDescriptor::isUnspecifiedParameter() const {
- return DbgNode && getTag() == dwarf::DW_TAG_unspecified_parameters;
-}
-
/// isScope - Return true if the specified tag is one of the scope
/// related tag.
bool DIDescriptor::isScope() const {
/// lexical block with an extra file.
bool DIDescriptor::isLexicalBlockFile() const {
return DbgNode && getTag() == dwarf::DW_TAG_lexical_block &&
- (DbgNode->getNumOperands() == 3);
+ 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.
return DbgNode && getTag() == dwarf::DW_TAG_lexical_block &&
- (DbgNode->getNumOperands() > 3);
+ DbgNode->getNumOperands() == 3 &&
+ (getNumHeaderFields() == 2 || getNumHeaderFields() == 4);
}
/// isSubrange - Return true if the specified tag is DW_TAG_subrange_type.
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
//===----------------------------------------------------------------------===//
-unsigned DIArray::getNumElements() const {
- if (!DbgNode)
- return 0;
- return DbgNode->getNumOperands();
-}
-
/// replaceAllUsesWith - Replace all uses of the MDNode used by this
/// type with the one in the passed descriptor.
-void DIType::replaceAllUsesWith(LLVMContext &VMContext, DIDescriptor D) {
+void DIDescriptor::replaceAllUsesWith(LLVMContext &VMContext, DIDescriptor D) {
assert(DbgNode && "Trying to replace an unverified type!");
const Value *V = cast_or_null<Value>(DN);
Node->replaceAllUsesWith(const_cast<Value *>(V));
MDNode::deleteTemporary(Node);
- DbgNode = D;
+ DbgNode = DN;
}
/// replaceAllUsesWith - Replace all uses of the MDNode used by this
/// type with the one in D.
-void DIType::replaceAllUsesWith(MDNode *D) {
+void DIDescriptor::replaceAllUsesWith(MDNode *D) {
assert(DbgNode && "Trying to replace an unverified type!");
assert(DbgNode != D && "This replacement should always happen");
if (getFilename().empty())
return false;
- return DbgNode->getNumOperands() == 14;
+ return DbgNode->getNumOperands() == 7 && getNumHeaderFields() == 8;
}
/// Verify - Verify that an ObjC property is well formed.
return false;
// Don't worry about the rest of the strings for now.
- return DbgNode->getNumOperands() == 8;
+ return DbgNode->getNumOperands() == 3 && getNumHeaderFields() == 6;
}
/// Check if a field at position Elt of a MDNode is a MDNode.
Tag != dwarf::DW_TAG_inheritance && Tag != dwarf::DW_TAG_friend &&
getFilename().empty())
return false;
+
// DIType is abstract, it should be a BasicType, a DerivedType or
// a CompositeType.
if (isBasicType())
/// Verify - Verify that a basic type descriptor is well formed.
bool DIBasicType::Verify() const {
- return isBasicType() && DbgNode->getNumOperands() == 10;
+ 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 9 is TypeRef.
- if (!fieldIsTypeRef(DbgNode, 9))
+ // Make sure DerivedFrom @ field 3 is TypeRef.
+ if (!fieldIsTypeRef(DbgNode, 3))
return false;
if (getTag() == dwarf::DW_TAG_ptr_to_member_type)
- // Make sure ClassType @ field 10 is a TypeRef.
- if (!fieldIsTypeRef(DbgNode, 10))
+ // Make sure ClassType @ field 4 is a TypeRef.
+ if (!fieldIsTypeRef(DbgNode, 4))
return false;
- return isDerivedType() && DbgNode->getNumOperands() >= 10 &&
- DbgNode->getNumOperands() <= 14;
+ return isDerivedType() && DbgNode->getNumOperands() >= 4 &&
+ DbgNode->getNumOperands() <= 8 && getNumHeaderFields() >= 7 &&
+ getNumHeaderFields() <= 8;
}
/// Verify - Verify that a composite type descriptor is well formed.
if (!isCompositeType())
return false;
- // Make sure DerivedFrom @ field 9 and ContainingType @ field 12 are TypeRef.
- if (!fieldIsTypeRef(DbgNode, 9))
+ // Make sure DerivedFrom @ field 3 and ContainingType @ field 5 are TypeRef.
+ if (!fieldIsTypeRef(DbgNode, 3))
return false;
- if (!fieldIsTypeRef(DbgNode, 12))
+ if (!fieldIsTypeRef(DbgNode, 5))
return false;
- // Make sure the type identifier at field 14 is MDString, it can be null.
- if (!fieldIsMDString(DbgNode, 14))
+ // Make sure the type identifier at field 7 is MDString, it can be null.
+ if (!fieldIsMDString(DbgNode, 7))
return false;
// A subroutine type can't be both & and &&.
if (isLValueReference() && isRValueReference())
return false;
- return DbgNode->getNumOperands() == 15;
+ return DbgNode->getNumOperands() == 8 && getNumHeaderFields() == 8;
}
/// Verify - Verify that a subprogram descriptor is well formed.
if (!isSubprogram())
return false;
- // Make sure context @ field 2 is a ScopeRef and type @ field 7 is a MDNode.
+ // Make sure context @ field 2 is a ScopeRef and type @ field 3 is a MDNode.
if (!fieldIsScopeRef(DbgNode, 2))
return false;
- if (!fieldIsMDNode(DbgNode, 7))
+ if (!fieldIsMDNode(DbgNode, 3))
return false;
- // Containing type @ field 12.
- if (!fieldIsTypeRef(DbgNode, 12))
+ // Containing type @ field 4.
+ if (!fieldIsTypeRef(DbgNode, 4))
return false;
// A subprogram can't be both & and &&.
if (isLValueReference() && isRValueReference())
return false;
- return DbgNode->getNumOperands() == 20;
+ return DbgNode->getNumOperands() == 9 && getNumHeaderFields() == 12;
}
/// Verify - Verify that a global variable descriptor is well formed.
if (getDisplayName().empty())
return false;
- // Make sure context @ field 2 is an MDNode.
- if (!fieldIsMDNode(DbgNode, 2))
+ // Make sure context @ field 1 is an MDNode.
+ if (!fieldIsMDNode(DbgNode, 1))
return false;
- // Make sure that type @ field 8 is a DITypeRef.
- if (!fieldIsTypeRef(DbgNode, 8))
+ // Make sure that type @ field 3 is a DITypeRef.
+ if (!fieldIsTypeRef(DbgNode, 3))
return false;
- // Make sure StaticDataMemberDeclaration @ field 12 is MDNode.
- if (!fieldIsMDNode(DbgNode, 12))
+ // Make sure StaticDataMemberDeclaration @ field 5 is MDNode.
+ if (!fieldIsMDNode(DbgNode, 5))
return false;
- return DbgNode->getNumOperands() == 13;
+ return DbgNode->getNumOperands() == 6 && getNumHeaderFields() == 7;
}
/// Verify - Verify that a variable descriptor is well formed.
// Make sure context @ field 1 is an MDNode.
if (!fieldIsMDNode(DbgNode, 1))
return false;
- // Make sure that type @ field 5 is a DITypeRef.
- if (!fieldIsTypeRef(DbgNode, 5))
+ // Make sure that type @ field 3 is a DITypeRef.
+ if (!fieldIsTypeRef(DbgNode, 3))
return false;
- return DbgNode->getNumOperands() >= 8;
+
+ // Check the number of header fields, which is common between complex and
+ // simple variables.
+ if (getNumHeaderFields() != 4)
+ return false;
+
+ // Variable without an inline location.
+ if (DbgNode->getNumOperands() == 4)
+ return true;
+
+ // Variable with an inline location.
+ 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 true;
+
+ return isExpression() && DbgNode->getNumOperands() == 1;
}
/// Verify - Verify that a location descriptor is well formed.
bool DINameSpace::Verify() const {
if (!isNameSpace())
return false;
- return DbgNode->getNumOperands() == 5;
+ return DbgNode->getNumOperands() == 3 && getNumHeaderFields() == 3;
}
/// \brief Retrieve the MDNode for the directory/file pair.
/// \brief Verify that the enumerator descriptor is well formed.
bool DIEnumerator::Verify() const {
- return isEnumerator() && DbgNode->getNumOperands() == 3;
+ return isEnumerator() && DbgNode->getNumOperands() == 1 &&
+ getNumHeaderFields() == 3;
}
/// \brief Verify that the subrange descriptor is well formed.
bool DISubrange::Verify() const {
- return isSubrange() && DbgNode->getNumOperands() == 3;
+ 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() == 7;
+ 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;
-}
-
-/// \brief Verify that an unspecified parameter descriptor is well formed.
-bool DIUnspecifiedParameter::Verify() const {
- return isUnspecifiedParameter() && DbgNode->getNumOperands() == 1;
+ 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() == 7;
+ 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() == 8;
+ 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() == 4 || DbgNode->getNumOperands() == 5);
+ 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, 10);
+ return getNodeField(DbgNode, 4);
}
MDString *DICompositeType::getIdentifier() const {
- return cast_or_null<MDString>(getField(DbgNode, 14));
+ return cast_or_null<MDString>(getField(DbgNode, 7));
}
#ifndef NDEBUG
#endif
/// \brief Set the array of member DITypes.
-void DICompositeType::setTypeArray(DIArray Elements, DIArray TParams) {
- assert((!TParams || DbgNode->getNumOperands() == 15) &&
- "If you're setting the template parameters this should include a slot "
- "for that!");
+void DICompositeType::setArraysHelper(MDNode *Elements, MDNode *TParams) {
TrackingVH<MDNode> N(*this);
if (Elements) {
#ifndef NDEBUG
// Check that the new list of members contains all the old members as well.
- if (const MDNode *El = cast_or_null<MDNode>(N->getOperand(10)))
+ if (const MDNode *El = cast_or_null<MDNode>(N->getOperand(4)))
VerifySubsetOf(El, Elements);
#endif
- N->replaceOperandWith(10, Elements);
+ N->replaceOperandWith(4, Elements);
}
if (TParams)
- N->replaceOperandWith(13, TParams);
+ N->replaceOperandWith(6, TParams);
DbgNode = N;
}
/// \brief Set the containing type.
void DICompositeType::setContainingType(DICompositeType ContainingType) {
TrackingVH<MDNode> N(*this);
- N->replaceOperandWith(12, ContainingType.getRef());
+ N->replaceOperandWith(5, ContainingType.getRef());
DbgNode = N;
}
return false;
}
-unsigned DISubprogram::isOptimized() const {
- assert(DbgNode && "Invalid subprogram descriptor!");
- if (DbgNode->getNumOperands() == 15)
- return getUnsignedField(14);
- return 0;
-}
-
MDNode *DISubprogram::getVariablesNodes() const {
- return getNodeField(DbgNode, 18);
+ return getNodeField(DbgNode, 8);
}
DIArray DISubprogram::getVariables() const {
- return DIArray(getNodeField(DbgNode, 18));
+ return DIArray(getNodeField(DbgNode, 8));
}
Value *DITemplateValueParameter::getValue() const {
- return getField(DbgNode, 4);
+ return getField(DbgNode, 3);
}
// If the current node has a parent scope then return that,
}
DIArray DICompileUnit::getEnumTypes() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
+ if (!DbgNode || DbgNode->getNumOperands() < 7)
return DIArray();
- return DIArray(getNodeField(DbgNode, 7));
+ return DIArray(getNodeField(DbgNode, 2));
}
DIArray DICompileUnit::getRetainedTypes() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
+ if (!DbgNode || DbgNode->getNumOperands() < 7)
return DIArray();
- return DIArray(getNodeField(DbgNode, 8));
+ return DIArray(getNodeField(DbgNode, 3));
}
DIArray DICompileUnit::getSubprograms() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
+ if (!DbgNode || DbgNode->getNumOperands() < 7)
return DIArray();
- return DIArray(getNodeField(DbgNode, 9));
+ return DIArray(getNodeField(DbgNode, 4));
}
DIArray DICompileUnit::getGlobalVariables() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
+ if (!DbgNode || DbgNode->getNumOperands() < 7)
return DIArray();
- return DIArray(getNodeField(DbgNode, 10));
+ return DIArray(getNodeField(DbgNode, 5));
}
DIArray DICompileUnit::getImportedEntities() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
+ if (!DbgNode || DbgNode->getNumOperands() < 7)
return DIArray();
- return DIArray(getNodeField(DbgNode, 11));
+ return DIArray(getNodeField(DbgNode, 6));
+}
+
+void DICompileUnit::replaceSubprograms(DIArray Subprograms) {
+ assert(Verify() && "Expected compile unit");
+ if (Subprograms == getSubprograms())
+ return;
+
+ const_cast<MDNode *>(DbgNode)->replaceOperandWith(4, Subprograms);
+}
+
+void DICompileUnit::replaceGlobalVariables(DIArray GlobalVariables) {
+ assert(Verify() && "Expected compile unit");
+ if (GlobalVariables == getGlobalVariables())
+ return;
+
+ 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,
- DILexicalBlock NewScope) {
+ DILexicalBlockFile NewScope) {
SmallVector<Value *, 10> Elts;
assert(Verify());
for (unsigned I = 0; I < DbgNode->getNumOperands(); ++I) {
/// @param InlinedScope Location at current variable is inlined.
DIVariable llvm::createInlinedVariable(MDNode *DV, MDNode *InlinedScope,
LLVMContext &VMContext) {
- SmallVector<Value *, 16> Elts;
- // Insert inlined scope as 7th element.
- for (unsigned i = 0, e = DV->getNumOperands(); i != e; ++i)
- i == 7 ? Elts.push_back(InlinedScope) : Elts.push_back(DV->getOperand(i));
- return DIVariable(MDNode::get(VMContext, Elts));
+ assert(DIVariable(DV).Verify() && "Expected a DIVariable");
+ if (!InlinedScope)
+ return cleanseInlinedVariable(DV, VMContext);
+
+ // Insert inlined scope.
+ SmallVector<Value *, 8> Elts;
+ for (unsigned I = 0, E = DIVariableInlinedAtIndex; I != E; ++I)
+ Elts.push_back(DV->getOperand(I));
+ Elts.push_back(InlinedScope);
+
+ DIVariable Inlined(MDNode::get(VMContext, Elts));
+ assert(Inlined.Verify() && "Expected to create a DIVariable");
+ return Inlined;
}
/// cleanseInlinedVariable - Remove inlined scope from the variable.
DIVariable llvm::cleanseInlinedVariable(MDNode *DV, LLVMContext &VMContext) {
- SmallVector<Value *, 16> Elts;
- // Insert inlined scope as 7th element.
- for (unsigned i = 0, e = DV->getNumOperands(); i != e; ++i)
- i == 7 ? Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext)))
- : Elts.push_back(DV->getOperand(i));
- return DIVariable(MDNode::get(VMContext, Elts));
+ assert(DIVariable(DV).Verify() && "Expected a DIVariable");
+ if (!DIVariable(DV).getInlinedAt())
+ return DIVariable(DV);
+
+ // Remove inlined scope.
+ SmallVector<Value *, 8> Elts;
+ for (unsigned I = 0, E = DIVariableInlinedAtIndex; I != E; ++I)
+ Elts.push_back(DV->getOperand(I));
+
+ DIVariable Cleansed(MDNode::get(VMContext, Elts));
+ assert(Cleansed.Verify() && "Expected to create a DIVariable");
+ return Cleansed;
}
/// getDISubprogram - Find subprogram that is enclosing this scope.
if (DT.isCompositeType()) {
DICompositeType DCT(DT);
processType(DCT.getTypeDerivedFrom().resolve(TypeIdentifierMap));
- DIArray DA = DCT.getTypeArray();
+ if (DT.isSubroutineType()) {
+ DITypeArray DTA = DISubroutineType(DT).getTypeArray();
+ for (unsigned i = 0, e = DTA.getNumElements(); i != e; ++i)
+ processType(DTA.getElement(i).resolve(TypeIdentifierMap));
+ return;
+ }
+ DIArray DA = DCT.getElements();
for (unsigned i = 0, e = DA.getNumElements(); i != e; ++i) {
DIDescriptor D = DA.getElement(i);
if (D.isType())
DINameSpace(DbgNode).printInternal(OS);
} else if (this->isScope()) {
DIScope(DbgNode).printInternal(OS);
+ } else if (this->isExpression()) {
+ DIExpression(DbgNode).printInternal(OS);
}
}
OS << " [private]";
else if (isProtected())
OS << " [protected]";
+ else if (isPublic())
+ OS << " [public]";
if (isArtificial())
OS << " [artificial]";
void DICompositeType::printInternal(raw_ostream &OS) const {
DIType::printInternal(OS);
- DIArray A = getTypeArray();
+ DIArray A = getElements();
OS << " [" << A.getNumElements() << " elements]";
}
OS << " [private]";
else if (isProtected())
OS << " [protected]";
+ else if (isPublic())
+ OS << " [public]";
if (isLValueReference())
OS << " [reference]";
OS << " [line " << getLineNumber() << ']';
}
+void DIExpression::printInternal(raw_ostream &OS) const {
+ for (unsigned I = 0; I < getNumElements(); ++I) {
+ uint64_t OpCode = getElement(I);
+ OS << " [" << OperationEncodingString(OpCode);
+ switch (OpCode) {
+ case DW_OP_plus: {
+ OS << " " << getElement(++I);
+ break;
+ }
+ case DW_OP_piece: {
+ unsigned Offset = getElement(++I);
+ unsigned Size = getElement(++I);
+ OS << " offset=" << Offset << ", size=" << Size;
+ break;
+ }
+ default:
+ // Else bail out early. This may be a line table entry.
+ OS << "Unknown]";
+ return;
+ }
+ OS << "]";
+ }
+}
+
void DIObjCProperty::printInternal(raw_ostream &OS) const {
StringRef Name = getObjCPropertyName();
if (!Name.empty())
return 0;
return cast<ConstantInt>(Val)->getZExtValue();
}
+
+llvm::DenseMap<const llvm::Function *, llvm::DISubprogram>
+llvm::makeSubprogramMap(const Module &M) {
+ DenseMap<const Function *, DISubprogram> R;
+
+ NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu");
+ if (!CU_Nodes)
+ return R;
+
+ for (MDNode *N : CU_Nodes->operands()) {
+ DICompileUnit CUNode(N);
+ DIArray SPs = CUNode.getSubprograms();
+ for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i) {
+ DISubprogram SP(SPs.getElement(i));
+ if (Function *F = SP.getFunction())
+ R.insert(std::make_pair(F, SP));
+ }
+ }
+ return R;
+}
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