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DIBuilder.cpp
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//===--- DIBuilder.cpp - Debug Information Builder ------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the DIBuilder.
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/DIBuilder.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Dwarf.h"
using namespace llvm;
using namespace llvm::dwarf;
static Constant *GetTagConstant(LLVMContext &VMContext, unsigned Tag) {
assert((Tag & LLVMDebugVersionMask) == 0 &&
"Tag too large for debug encoding!");
return ConstantInt::get(Type::getInt32Ty(VMContext), Tag | LLVMDebugVersion);
}
DIBuilder::DIBuilder(Module &m)
: M(m), VMContext(M.getContext()), TempEnumTypes(nullptr),
TempRetainTypes(nullptr), TempSubprograms(nullptr), TempGVs(nullptr),
DeclareFn(nullptr), ValueFn(nullptr) {}
/// finalize - Construct any deferred debug info descriptors.
void DIBuilder::finalize() {
DIArray Enums = getOrCreateArray(AllEnumTypes);
DIType(TempEnumTypes).replaceAllUsesWith(Enums);
SmallVector<Value *, 16> RetainValues;
// Declarations and definitions of the same type may be retained. Some
// clients RAUW these pairs, leaving duplicates in the retained types
// list. Use a set to remove the duplicates while we transform the
// TrackingVHs back into Values.
SmallPtrSet<Value *, 16> RetainSet;
for (unsigned I = 0, E = AllRetainTypes.size(); I < E; I++)
if (RetainSet.insert(AllRetainTypes[I]))
RetainValues.push_back(AllRetainTypes[I]);
DIArray RetainTypes = getOrCreateArray(RetainValues);
DIType(TempRetainTypes).replaceAllUsesWith(RetainTypes);
DIArray SPs = getOrCreateArray(AllSubprograms);
DIType(TempSubprograms).replaceAllUsesWith(SPs);
for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i) {
DISubprogram SP(SPs.getElement(i));
SmallVector<Value *, 4> Variables;
if (NamedMDNode *NMD = getFnSpecificMDNode(M, SP)) {
for (unsigned ii = 0, ee = NMD->getNumOperands(); ii != ee; ++ii)
Variables.push_back(NMD->getOperand(ii));
NMD->eraseFromParent();
}
if (MDNode *Temp = SP.getVariablesNodes()) {
DIArray AV = getOrCreateArray(Variables);
DIType(Temp).replaceAllUsesWith(AV);
}
}
DIArray GVs = getOrCreateArray(AllGVs);
DIType(TempGVs).replaceAllUsesWith(GVs);
SmallVector<Value *, 16> RetainValuesI;
for (unsigned I = 0, E = AllImportedModules.size(); I < E; I++)
RetainValuesI.push_back(AllImportedModules[I]);
DIArray IMs = getOrCreateArray(RetainValuesI);
DIType(TempImportedModules).replaceAllUsesWith(IMs);
}
/// getNonCompileUnitScope - If N is compile unit return NULL otherwise return
/// N.
static MDNode *getNonCompileUnitScope(MDNode *N) {
if (DIDescriptor(N).isCompileUnit())
return nullptr;
return N;
}
static MDNode *createFilePathPair(LLVMContext &VMContext, StringRef Filename,
StringRef Directory) {
assert(!Filename.empty() && "Unable to create file without name");
Value *Pair[] = {
MDString::get(VMContext, Filename),
MDString::get(VMContext, Directory)
};
return MDNode::get(VMContext, Pair);
}
/// createCompileUnit - A CompileUnit provides an anchor for all debugging
/// information generated during this instance of compilation.
DICompileUnit DIBuilder::createCompileUnit(unsigned Lang, StringRef Filename,
StringRef Directory,
StringRef Producer, bool isOptimized,
StringRef Flags, unsigned RunTimeVer,
StringRef SplitName,
DebugEmissionKind Kind,
bool EmitDebugInfo) {
assert(((Lang <= dwarf::DW_LANG_OCaml && Lang >= dwarf::DW_LANG_C89) ||
(Lang <= dwarf::DW_LANG_hi_user && Lang >= dwarf::DW_LANG_lo_user)) &&
"Invalid Language tag");
assert(!Filename.empty() &&
"Unable to create compile unit without filename");
Value *TElts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
TempEnumTypes = MDNode::getTemporary(VMContext, TElts);
TempRetainTypes = MDNode::getTemporary(VMContext, TElts);
TempSubprograms = MDNode::getTemporary(VMContext, TElts);
TempGVs = MDNode::getTemporary(VMContext, TElts);
TempImportedModules = MDNode::getTemporary(VMContext, TElts);
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_compile_unit),
createFilePathPair(VMContext, Filename, Directory),
ConstantInt::get(Type::getInt32Ty(VMContext), Lang),
MDString::get(VMContext, Producer),
ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
MDString::get(VMContext, Flags),
ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeVer),
TempEnumTypes,
TempRetainTypes,
TempSubprograms,
TempGVs,
TempImportedModules,
MDString::get(VMContext, SplitName),
ConstantInt::get(Type::getInt32Ty(VMContext), Kind)
};
MDNode *CUNode = MDNode::get(VMContext, Elts);
// Create a named metadata so that it is easier to find cu in a module.
// Note that we only generate this when the caller wants to actually
// emit debug information. When we are only interested in tracking
// source line locations throughout the backend, we prevent codegen from
// emitting debug info in the final output by not generating llvm.dbg.cu.
if (EmitDebugInfo) {
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.cu");
NMD->addOperand(CUNode);
}
return DICompileUnit(CUNode);
}
static DIImportedEntity
createImportedModule(LLVMContext &C, dwarf::Tag Tag, DIScope Context,
Value *NS, unsigned Line, StringRef Name,
SmallVectorImpl<TrackingVH<MDNode>> &AllImportedModules) {
const MDNode *R;
if (Name.empty()) {
Value *Elts[] = {
GetTagConstant(C, Tag),
Context,
NS,
ConstantInt::get(Type::getInt32Ty(C), Line),
};
R = MDNode::get(C, Elts);
} else {
Value *Elts[] = {
GetTagConstant(C, Tag),
Context,
NS,
ConstantInt::get(Type::getInt32Ty(C), Line),
MDString::get(C, Name)
};
R = MDNode::get(C, Elts);
}
DIImportedEntity M(R);
assert(M.Verify() && "Imported module should be valid");
AllImportedModules.push_back(TrackingVH<MDNode>(M));
return M;
}
DIImportedEntity DIBuilder::createImportedModule(DIScope Context,
DINameSpace NS,
unsigned Line) {
return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_module,
Context, NS, Line, StringRef(), AllImportedModules);
}
DIImportedEntity DIBuilder::createImportedModule(DIScope Context,
DIImportedEntity NS,
unsigned Line) {
return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_module,
Context, NS, Line, StringRef(), AllImportedModules);
}
DIImportedEntity DIBuilder::createImportedDeclaration(DIScope Context,
DIScope Decl,
unsigned Line, StringRef Name) {
return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_declaration,
Context, Decl.getRef(), Line, Name,
AllImportedModules);
}
DIImportedEntity DIBuilder::createImportedDeclaration(DIScope Context,
DIImportedEntity Imp,
unsigned Line, StringRef Name) {
return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_declaration,
Context, Imp, Line, Name, AllImportedModules);
}
/// createFile - Create a file descriptor to hold debugging information
/// for a file.
DIFile DIBuilder::createFile(StringRef Filename, StringRef Directory) {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_file_type),
createFilePathPair(VMContext, Filename, Directory)
};
return DIFile(MDNode::get(VMContext, Elts));
}
/// createEnumerator - Create a single enumerator value.
DIEnumerator DIBuilder::createEnumerator(StringRef Name, int64_t Val) {
assert(!Name.empty() && "Unable to create enumerator without name");
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_enumerator),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt64Ty(VMContext), Val)
};
return DIEnumerator(MDNode::get(VMContext, Elts));
}
/// \brief Create a DWARF unspecified type.
DIBasicType DIBuilder::createUnspecifiedType(StringRef Name) {
assert(!Name.empty() && "Unable to create type without name");
// Unspecified types are encoded in DIBasicType format. Line number, filename,
// size, alignment, offset and flags are always empty here.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_unspecified_type),
nullptr, // Filename
nullptr, // Unused
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags;
ConstantInt::get(Type::getInt32Ty(VMContext), 0) // Encoding
};
return DIBasicType(MDNode::get(VMContext, Elts));
}
/// \brief Create C++11 nullptr type.
DIBasicType DIBuilder::createNullPtrType() {
return createUnspecifiedType("decltype(nullptr)");
}
/// createBasicType - Create debugging information entry for a basic
/// type, e.g 'char'.
DIBasicType
DIBuilder::createBasicType(StringRef Name, uint64_t SizeInBits,
uint64_t AlignInBits, unsigned Encoding) {
assert(!Name.empty() && "Unable to create type without name");
// Basic types are encoded in DIBasicType format. Line number, filename,
// offset and flags are always empty here.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_base_type),
nullptr, // File/directory name
nullptr, // Unused
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags;
ConstantInt::get(Type::getInt32Ty(VMContext), Encoding)
};
return DIBasicType(MDNode::get(VMContext, Elts));
}
/// createQualifiedType - Create debugging information entry for a qualified
/// type, e.g. 'const int'.
DIDerivedType DIBuilder::createQualifiedType(unsigned Tag, DIType FromTy) {
// Qualified types are encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, Tag),
nullptr, // Filename
nullptr, // Unused
MDString::get(VMContext, StringRef()), // Empty name.
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
FromTy.getRef()
};
return DIDerivedType(MDNode::get(VMContext, Elts));
}
/// createPointerType - Create debugging information entry for a pointer.
DIDerivedType
DIBuilder::createPointerType(DIType PointeeTy, uint64_t SizeInBits,
uint64_t AlignInBits, StringRef Name) {
// Pointer types are encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_pointer_type),
nullptr, // Filename
nullptr, // Unused
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
PointeeTy.getRef()
};
return DIDerivedType(MDNode::get(VMContext, Elts));
}
DIDerivedType DIBuilder::createMemberPointerType(DIType PointeeTy,
DIType Base) {
// Pointer types are encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_ptr_to_member_type),
nullptr, // Filename
nullptr, // Unused
nullptr,
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
PointeeTy.getRef(),
Base.getRef()
};
return DIDerivedType(MDNode::get(VMContext, Elts));
}
/// createReferenceType - Create debugging information entry for a reference
/// type.
DIDerivedType DIBuilder::createReferenceType(unsigned Tag, DIType RTy) {
assert(RTy.isType() && "Unable to create reference type");
// References are encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, Tag),
nullptr, // Filename
nullptr, // TheCU,
nullptr, // Name
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
RTy.getRef()
};
return DIDerivedType(MDNode::get(VMContext, Elts));
}
/// createTypedef - Create debugging information entry for a typedef.
DIDerivedType DIBuilder::createTypedef(DIType Ty, StringRef Name, DIFile File,
unsigned LineNo, DIDescriptor Context) {
// typedefs are encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_typedef),
File.getFileNode(),
DIScope(getNonCompileUnitScope(Context)).getRef(),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
Ty.getRef()
};
return DIDerivedType(MDNode::get(VMContext, Elts));
}
/// createFriend - Create debugging information entry for a 'friend'.
DIDerivedType DIBuilder::createFriend(DIType Ty, DIType FriendTy) {
// typedefs are encoded in DIDerivedType format.
assert(Ty.isType() && "Invalid type!");
assert(FriendTy.isType() && "Invalid friend type!");
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_friend),
nullptr,
Ty.getRef(),
nullptr, // Name
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
FriendTy.getRef()
};
return DIDerivedType(MDNode::get(VMContext, Elts));
}
/// createInheritance - Create debugging information entry to establish
/// inheritance relationship between two types.
DIDerivedType DIBuilder::createInheritance(DIType Ty, DIType BaseTy,
uint64_t BaseOffset,
unsigned Flags) {
assert(Ty.isType() && "Unable to create inheritance");
// TAG_inheritance is encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_inheritance),
nullptr,
Ty.getRef(),
nullptr, // Name
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
ConstantInt::get(Type::getInt64Ty(VMContext), BaseOffset),
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
BaseTy.getRef()
};
return DIDerivedType(MDNode::get(VMContext, Elts));
}
/// createMemberType - Create debugging information entry for a member.
DIDerivedType DIBuilder::createMemberType(DIDescriptor Scope, StringRef Name,
DIFile File, unsigned LineNumber,
uint64_t SizeInBits,
uint64_t AlignInBits,
uint64_t OffsetInBits, unsigned Flags,
DIType Ty) {
// TAG_member is encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_member),
File.getFileNode(),
DIScope(getNonCompileUnitScope(Scope)).getRef(),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
Ty.getRef()
};
return DIDerivedType(MDNode::get(VMContext, Elts));
}
/// createStaticMemberType - Create debugging information entry for a
/// C++ static data member.
DIDerivedType
DIBuilder::createStaticMemberType(DIDescriptor Scope, StringRef Name,
DIFile File, unsigned LineNumber,
DIType Ty, unsigned Flags,
llvm::Value *Val) {
// TAG_member is encoded in DIDerivedType format.
Flags |= DIDescriptor::FlagStaticMember;
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_member),
File.getFileNode(),
DIScope(getNonCompileUnitScope(Scope)).getRef(),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
Ty.getRef(),
Val
};
return DIDerivedType(MDNode::get(VMContext, Elts));
}
/// createObjCIVar - Create debugging information entry for Objective-C
/// instance variable.
DIDerivedType
DIBuilder::createObjCIVar(StringRef Name, DIFile File, unsigned LineNumber,
uint64_t SizeInBits, uint64_t AlignInBits,
uint64_t OffsetInBits, unsigned Flags, DIType Ty,
StringRef PropertyName, StringRef GetterName,
StringRef SetterName, unsigned PropertyAttributes) {
// TAG_member is encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_member),
File.getFileNode(),
getNonCompileUnitScope(File),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
Ty,
MDString::get(VMContext, PropertyName),
MDString::get(VMContext, GetterName),
MDString::get(VMContext, SetterName),
ConstantInt::get(Type::getInt32Ty(VMContext), PropertyAttributes)
};
return DIDerivedType(MDNode::get(VMContext, Elts));
}
/// createObjCIVar - Create debugging information entry for Objective-C
/// instance variable.
DIDerivedType DIBuilder::createObjCIVar(StringRef Name, DIFile File,
unsigned LineNumber,
uint64_t SizeInBits,
uint64_t AlignInBits,
uint64_t OffsetInBits, unsigned Flags,
DIType Ty, MDNode *PropertyNode) {
// TAG_member is encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_member),
File.getFileNode(),
getNonCompileUnitScope(File),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
Ty,
PropertyNode
};
return DIDerivedType(MDNode::get(VMContext, Elts));
}
/// createObjCProperty - Create debugging information entry for Objective-C
/// property.
DIObjCProperty
DIBuilder::createObjCProperty(StringRef Name, DIFile File, unsigned LineNumber,
StringRef GetterName, StringRef SetterName,
unsigned PropertyAttributes, DIType Ty) {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_APPLE_property),
MDString::get(VMContext, Name),
File,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
MDString::get(VMContext, GetterName),
MDString::get(VMContext, SetterName),
ConstantInt::get(Type::getInt32Ty(VMContext), PropertyAttributes),
Ty
};
return DIObjCProperty(MDNode::get(VMContext, Elts));
}
/// createTemplateTypeParameter - Create debugging information for template
/// type parameter.
DITemplateTypeParameter
DIBuilder::createTemplateTypeParameter(DIDescriptor Context, StringRef Name,
DIType Ty, MDNode *File, unsigned LineNo,
unsigned ColumnNo) {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_template_type_parameter),
DIScope(getNonCompileUnitScope(Context)).getRef(),
MDString::get(VMContext, Name),
Ty.getRef(),
File,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo)
};
return DITemplateTypeParameter(MDNode::get(VMContext, Elts));
}
DITemplateValueParameter
DIBuilder::createTemplateValueParameter(unsigned Tag, DIDescriptor Context,
StringRef Name, DIType Ty,
Value *Val, MDNode *File,
unsigned LineNo,
unsigned ColumnNo) {
Value *Elts[] = {
GetTagConstant(VMContext, Tag),
DIScope(getNonCompileUnitScope(Context)).getRef(),
MDString::get(VMContext, Name),
Ty.getRef(),
Val,
File,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo)
};
return DITemplateValueParameter(MDNode::get(VMContext, Elts));
}
/// createTemplateValueParameter - Create debugging information for template
/// value parameter.
DITemplateValueParameter
DIBuilder::createTemplateValueParameter(DIDescriptor Context, StringRef Name,
DIType Ty, Value *Val,
MDNode *File, unsigned LineNo,
unsigned ColumnNo) {
return createTemplateValueParameter(dwarf::DW_TAG_template_value_parameter,
Context, Name, Ty, Val, File, LineNo,
ColumnNo);
}
DITemplateValueParameter
DIBuilder::createTemplateTemplateParameter(DIDescriptor Context, StringRef Name,
DIType Ty, StringRef Val,
MDNode *File, unsigned LineNo,
unsigned ColumnNo) {
return createTemplateValueParameter(
dwarf::DW_TAG_GNU_template_template_param, Context, Name, Ty,
MDString::get(VMContext, Val), File, LineNo, ColumnNo);
}
DITemplateValueParameter
DIBuilder::createTemplateParameterPack(DIDescriptor Context, StringRef Name,
DIType Ty, DIArray Val,
MDNode *File, unsigned LineNo,
unsigned ColumnNo) {
return createTemplateValueParameter(dwarf::DW_TAG_GNU_template_parameter_pack,
Context, Name, Ty, Val, File, LineNo,
ColumnNo);
}
/// createClassType - Create debugging information entry for a class.
DICompositeType DIBuilder::createClassType(DIDescriptor Context, StringRef Name,
DIFile File, unsigned LineNumber,
uint64_t SizeInBits,
uint64_t AlignInBits,
uint64_t OffsetInBits,
unsigned Flags, DIType DerivedFrom,
DIArray Elements,
DIType VTableHolder,
MDNode *TemplateParams,
StringRef UniqueIdentifier) {
assert((!Context || Context.isScope() || Context.isType()) &&
"createClassType should be called with a valid Context");
// TAG_class_type is encoded in DICompositeType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_class_type),
File.getFileNode(),
DIScope(getNonCompileUnitScope(Context)).getRef(),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), OffsetInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
DerivedFrom.getRef(),
Elements,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
VTableHolder.getRef(),
TemplateParams,
UniqueIdentifier.empty() ? nullptr
: MDString::get(VMContext, UniqueIdentifier)
};
DICompositeType R(MDNode::get(VMContext, Elts));
assert(R.isCompositeType() &&
"createClassType should return a DICompositeType");
if (!UniqueIdentifier.empty())
retainType(R);
return R;
}
/// createStructType - Create debugging information entry for a struct.
DICompositeType DIBuilder::createStructType(DIDescriptor Context,
StringRef Name, DIFile File,
unsigned LineNumber,
uint64_t SizeInBits,
uint64_t AlignInBits,
unsigned Flags, DIType DerivedFrom,
DIArray Elements,
unsigned RunTimeLang,
DIType VTableHolder,
StringRef UniqueIdentifier) {
// TAG_structure_type is encoded in DICompositeType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_structure_type),
File.getFileNode(),
DIScope(getNonCompileUnitScope(Context)).getRef(),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
DerivedFrom.getRef(),
Elements,
ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
VTableHolder.getRef(),
nullptr,
UniqueIdentifier.empty() ? nullptr
: MDString::get(VMContext, UniqueIdentifier)
};
DICompositeType R(MDNode::get(VMContext, Elts));
assert(R.isCompositeType() &&
"createStructType should return a DICompositeType");
if (!UniqueIdentifier.empty())
retainType(R);
return R;
}
/// createUnionType - Create debugging information entry for an union.
DICompositeType DIBuilder::createUnionType(DIDescriptor Scope, StringRef Name,
DIFile File, unsigned LineNumber,
uint64_t SizeInBits,
uint64_t AlignInBits, unsigned Flags,
DIArray Elements,
unsigned RunTimeLang,
StringRef UniqueIdentifier) {
// TAG_union_type is encoded in DICompositeType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_union_type),
File.getFileNode(),
DIScope(getNonCompileUnitScope(Scope)).getRef(),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
nullptr,
Elements,
ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
nullptr,
nullptr,
UniqueIdentifier.empty() ? nullptr
: MDString::get(VMContext, UniqueIdentifier)
};
DICompositeType R(MDNode::get(VMContext, Elts));
if (!UniqueIdentifier.empty())
retainType(R);
return R;
}
/// createSubroutineType - Create subroutine type.
DICompositeType DIBuilder::createSubroutineType(DIFile File,
DIArray ParameterTypes,
unsigned Flags) {
// TAG_subroutine_type is encoded in DICompositeType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_subroutine_type),
Constant::getNullValue(Type::getInt32Ty(VMContext)),
nullptr,
MDString::get(VMContext, ""),
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), Flags), // Flags
nullptr,
ParameterTypes,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
nullptr,
nullptr,
nullptr // Type Identifer
};
return DICompositeType(MDNode::get(VMContext, Elts));
}
/// createEnumerationType - Create debugging information entry for an
/// enumeration.
DICompositeType DIBuilder::createEnumerationType(
DIDescriptor Scope, StringRef Name, DIFile File, unsigned LineNumber,
uint64_t SizeInBits, uint64_t AlignInBits, DIArray Elements,
DIType UnderlyingType, StringRef UniqueIdentifier) {
// TAG_enumeration_type is encoded in DICompositeType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_enumeration_type),
File.getFileNode(),
DIScope(getNonCompileUnitScope(Scope)).getRef(),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
UnderlyingType.getRef(),
Elements,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
nullptr,
nullptr,
UniqueIdentifier.empty() ? nullptr
: MDString::get(VMContext, UniqueIdentifier)
};
DICompositeType CTy(MDNode::get(VMContext, Elts));
AllEnumTypes.push_back(CTy);
if (!UniqueIdentifier.empty())
retainType(CTy);
return CTy;
}
/// createArrayType - Create debugging information entry for an array.
DICompositeType DIBuilder::createArrayType(uint64_t Size, uint64_t AlignInBits,
DIType Ty, DIArray Subscripts) {
// TAG_array_type is encoded in DICompositeType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_array_type),
nullptr, // Filename/Directory,
nullptr, // Unused
MDString::get(VMContext, ""),
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
ConstantInt::get(Type::getInt64Ty(VMContext), Size),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
Ty.getRef(),
Subscripts,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
nullptr,
nullptr,
nullptr // Type Identifer
};
return DICompositeType(MDNode::get(VMContext, Elts));
}
/// createVectorType - Create debugging information entry for a vector.
DICompositeType DIBuilder::createVectorType(uint64_t Size, uint64_t AlignInBits,
DIType Ty, DIArray Subscripts) {
// A vector is an array type with the FlagVector flag applied.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_array_type),
nullptr, // Filename/Directory,
nullptr, // Unused
MDString::get(VMContext, ""),
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
ConstantInt::get(Type::getInt64Ty(VMContext), Size),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), DIType::FlagVector),
Ty.getRef(),
Subscripts,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
nullptr,
nullptr,
nullptr // Type Identifer
};
return DICompositeType(MDNode::get(VMContext, Elts));
}
/// createArtificialType - Create a new DIType with "artificial" flag set.
DIType DIBuilder::createArtificialType(DIType Ty) {
if (Ty.isArtificial())
return Ty;
SmallVector<Value *, 9> Elts;
MDNode *N = Ty;
assert (N && "Unexpected input DIType!");
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i)
Elts.push_back(N->getOperand(i));
unsigned CurFlags = Ty.getFlags();
CurFlags = CurFlags | DIType::FlagArtificial;
// Flags are stored at this slot.
// FIXME: Add an enum for this magic value.
Elts[8] = ConstantInt::get(Type::getInt32Ty(VMContext), CurFlags);
return DIType(MDNode::get(VMContext, Elts));
}
/// createObjectPointerType - Create a new type with both the object pointer
/// and artificial flags set.
DIType DIBuilder::createObjectPointerType(DIType Ty) {
if (Ty.isObjectPointer())
return Ty;
SmallVector<Value *, 9> Elts;
MDNode *N = Ty;
assert (N && "Unexpected input DIType!");
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i)
Elts.push_back(N->getOperand(i));
unsigned CurFlags = Ty.getFlags();
CurFlags = CurFlags | (DIType::FlagObjectPointer | DIType::FlagArtificial);
// Flags are stored at this slot.
// FIXME: Add an enum for this magic value.
Elts[8] = ConstantInt::get(Type::getInt32Ty(VMContext), CurFlags);
return DIType(MDNode::get(VMContext, Elts));
}
/// retainType - Retain DIType in a module even if it is not referenced
/// through debug info anchors.
void DIBuilder::retainType(DIType T) {
AllRetainTypes.push_back(TrackingVH<MDNode>(T));
}
/// createUnspecifiedParameter - Create unspeicified type descriptor
/// for the subroutine type.
DIDescriptor DIBuilder::createUnspecifiedParameter() {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_unspecified_parameters)
};
return DIDescriptor(MDNode::get(VMContext, Elts));
}
/// createForwardDecl - Create a temporary forward-declared type that
/// can be RAUW'd if the full type is seen.
DICompositeType
DIBuilder::createForwardDecl(unsigned Tag, StringRef Name, DIDescriptor Scope,
DIFile F, unsigned Line, unsigned RuntimeLang,
uint64_t SizeInBits, uint64_t AlignInBits,
StringRef UniqueIdentifier) {
// Create a temporary MDNode.
Value *Elts[] = {
GetTagConstant(VMContext, Tag),
F.getFileNode(),
DIScope(getNonCompileUnitScope(Scope)).getRef(),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), Line),
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), DIDescriptor::FlagFwdDecl),
nullptr,
DIArray(),
ConstantInt::get(Type::getInt32Ty(VMContext), RuntimeLang),
nullptr,
nullptr, //TemplateParams
UniqueIdentifier.empty() ? nullptr
: MDString::get(VMContext, UniqueIdentifier)
};
MDNode *Node = MDNode::get(VMContext, Elts);
DICompositeType RetTy(Node);
assert(RetTy.isCompositeType() &&
"createForwardDecl result should be a DIType");
if (!UniqueIdentifier.empty())
retainType(RetTy);
return RetTy;
}
/// createForwardDecl - Create a temporary forward-declared type that
/// can be RAUW'd if the full type is seen.
DICompositeType DIBuilder::createReplaceableForwardDecl(
unsigned Tag, StringRef Name, DIDescriptor Scope, DIFile F, unsigned Line,
unsigned RuntimeLang, uint64_t SizeInBits, uint64_t AlignInBits,
StringRef UniqueIdentifier) {
// Create a temporary MDNode.
Value *Elts[] = {
GetTagConstant(VMContext, Tag),
F.getFileNode(),
DIScope(getNonCompileUnitScope(Scope)).getRef(),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt32Ty(VMContext), Line),
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Offset
ConstantInt::get(Type::getInt32Ty(VMContext), DIDescriptor::FlagFwdDecl),
nullptr,
DIArray(),
ConstantInt::get(Type::getInt32Ty(VMContext), RuntimeLang),
nullptr,
nullptr, //TemplateParams
UniqueIdentifier.empty() ? nullptr
: MDString::get(VMContext, UniqueIdentifier)
};
MDNode *Node = MDNode::getTemporary(VMContext, Elts);
DICompositeType RetTy(Node);
assert(RetTy.isCompositeType() &&
"createForwardDecl result should be a DIType");
if (!UniqueIdentifier.empty())
retainType(RetTy);
return RetTy;
}
/// getOrCreateArray - Get a DIArray, create one if required.
DIArray DIBuilder::getOrCreateArray(ArrayRef<Value *> Elements) {
return DIArray(MDNode::get(VMContext, Elements));
}
/// getOrCreateSubrange - Create a descriptor for a value range. This
/// implicitly uniques the values returned.
DISubrange DIBuilder::getOrCreateSubrange(int64_t Lo, int64_t Count) {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_subrange_type),
ConstantInt::get(Type::getInt64Ty(VMContext), Lo),
ConstantInt::get(Type::getInt64Ty(VMContext), Count)
};
return DISubrange(MDNode::get(VMContext, Elts));
}
/// \brief Create a new descriptor for the specified global.
DIGlobalVariable DIBuilder::createGlobalVariable(StringRef Name,
StringRef LinkageName,
DIFile F, unsigned LineNumber,
DITypeRef Ty, bool isLocalToUnit,
Value *Val) {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_variable),
Constant::getNullValue(Type::getInt32Ty(VMContext)),
nullptr, // TheCU,
MDString::get(VMContext, Name),
MDString::get(VMContext, Name),
MDString::get(VMContext, LinkageName),
F,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
Ty,
ConstantInt::get(Type::getInt32Ty(VMContext), isLocalToUnit),
ConstantInt::get(Type::getInt32Ty(VMContext), 1), /* isDefinition*/
Val,
DIDescriptor()
};
MDNode *Node = MDNode::get(VMContext, Elts);
AllGVs.push_back(Node);
return DIGlobalVariable(Node);
}
/// \brief Create a new descriptor for the specified global.
DIGlobalVariable DIBuilder::createGlobalVariable(StringRef Name, DIFile F,
unsigned LineNumber,
DITypeRef Ty,