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DebugInfo.cpp
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//===--- DebugInfo.cpp - Debug Information Helper Classes -----------------===//
//
// 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 helper classes used to build and interpret debug
// information in LLVM IR form.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/DebugInfo.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Intrinsics.h"
#include "llvm/IntrinsicInst.h"
#include "llvm/Instructions.h"
#include "llvm/Module.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
using namespace llvm::dwarf;
//===----------------------------------------------------------------------===//
// DIDescriptor
//===----------------------------------------------------------------------===//
DIDescriptor::DIDescriptor(const DIFile F) : DbgNode(F.DbgNode) {
}
DIDescriptor::DIDescriptor(const DISubprogram F) : DbgNode(F.DbgNode) {
}
DIDescriptor::DIDescriptor(const DILexicalBlock F) : DbgNode(F.DbgNode) {
}
DIDescriptor::DIDescriptor(const DIVariable F) : DbgNode(F.DbgNode) {
}
DIDescriptor::DIDescriptor(const DIType F) : DbgNode(F.DbgNode) {
}
StringRef
DIDescriptor::getStringField(unsigned Elt) const {
if (DbgNode == 0)
return StringRef();
if (Elt < DbgNode->getNumOperands())
if (MDString *MDS = dyn_cast_or_null<MDString>(DbgNode->getOperand(Elt)))
return MDS->getString();
return StringRef();
}
uint64_t DIDescriptor::getUInt64Field(unsigned Elt) const {
if (DbgNode == 0)
return 0;
if (Elt < DbgNode->getNumOperands())
if (ConstantInt *CI = dyn_cast<ConstantInt>(DbgNode->getOperand(Elt)))
return CI->getZExtValue();
return 0;
}
DIDescriptor DIDescriptor::getDescriptorField(unsigned Elt) const {
if (DbgNode == 0)
return DIDescriptor();
if (Elt < DbgNode->getNumOperands())
return
DIDescriptor(dyn_cast_or_null<const MDNode>(DbgNode->getOperand(Elt)));
return DIDescriptor();
}
GlobalVariable *DIDescriptor::getGlobalVariableField(unsigned Elt) const {
if (DbgNode == 0)
return 0;
if (Elt < DbgNode->getNumOperands())
return dyn_cast_or_null<GlobalVariable>(DbgNode->getOperand(Elt));
return 0;
}
Constant *DIDescriptor::getConstantField(unsigned Elt) const {
if (DbgNode == 0)
return 0;
if (Elt < DbgNode->getNumOperands())
return dyn_cast_or_null<Constant>(DbgNode->getOperand(Elt));
return 0;
}
Function *DIDescriptor::getFunctionField(unsigned Elt) const {
if (DbgNode == 0)
return 0;
if (Elt < DbgNode->getNumOperands())
return dyn_cast_or_null<Function>(DbgNode->getOperand(Elt));
return 0;
}
unsigned DIVariable::getNumAddrElements() const {
if (getVersion() <= llvm::LLVMDebugVersion8)
return DbgNode->getNumOperands()-6;
return DbgNode->getNumOperands()-7;
}
//===----------------------------------------------------------------------===//
// Predicates
//===----------------------------------------------------------------------===//
/// isBasicType - Return true if the specified tag is legal for
/// DIBasicType.
bool DIDescriptor::isBasicType() const {
return DbgNode && getTag() == dwarf::DW_TAG_base_type;
}
/// isDerivedType - Return true if the specified tag is legal for DIDerivedType.
bool DIDescriptor::isDerivedType() const {
if (!DbgNode) return false;
switch (getTag()) {
case dwarf::DW_TAG_typedef:
case dwarf::DW_TAG_pointer_type:
case dwarf::DW_TAG_reference_type:
case dwarf::DW_TAG_const_type:
case dwarf::DW_TAG_volatile_type:
case dwarf::DW_TAG_restrict_type:
case dwarf::DW_TAG_member:
case dwarf::DW_TAG_inheritance:
case dwarf::DW_TAG_friend:
return true;
default:
// CompositeTypes are currently modelled as DerivedTypes.
return isCompositeType();
}
}
/// isCompositeType - Return true if the specified tag is legal for
/// DICompositeType.
bool DIDescriptor::isCompositeType() const {
if (!DbgNode) return false;
switch (getTag()) {
case dwarf::DW_TAG_array_type:
case dwarf::DW_TAG_structure_type:
case dwarf::DW_TAG_union_type:
case dwarf::DW_TAG_enumeration_type:
case dwarf::DW_TAG_vector_type:
case dwarf::DW_TAG_subroutine_type:
case dwarf::DW_TAG_class_type:
return true;
default:
return false;
}
}
/// isVariable - Return true if the specified tag is legal for DIVariable.
bool DIDescriptor::isVariable() const {
if (!DbgNode) return false;
switch (getTag()) {
case dwarf::DW_TAG_auto_variable:
case dwarf::DW_TAG_arg_variable:
case dwarf::DW_TAG_return_variable:
return true;
default:
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);
}
/// isGlobal - Return true if the specified tag is legal for DIGlobal.
bool DIDescriptor::isGlobal() const {
return isGlobalVariable();
}
/// isUnspecifiedParmeter - Return true if the specified tab 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 {
if (!DbgNode) return false;
switch (getTag()) {
case dwarf::DW_TAG_compile_unit:
case dwarf::DW_TAG_lexical_block:
case dwarf::DW_TAG_subprogram:
case dwarf::DW_TAG_namespace:
return true;
default:
break;
}
return false;
}
/// 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;
}
/// isLexicalBlock - Return true if the specified tag is DW_TAG_lexical_block.
bool DIDescriptor::isLexicalBlock() const {
return DbgNode && getTag() == dwarf::DW_TAG_lexical_block;
}
/// 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;
}
//===----------------------------------------------------------------------===//
// Simple Descriptor Constructors and other Methods
//===----------------------------------------------------------------------===//
DIType::DIType(const MDNode *N) : DIScope(N) {
if (!N) return;
if (!isBasicType() && !isDerivedType() && !isCompositeType()) {
DbgNode = 0;
}
}
unsigned DIArray::getNumElements() const {
if (!DbgNode)
return 0;
return DbgNode->getNumOperands();
}
/// replaceAllUsesWith - Replace all uses of debug info referenced by
/// this descriptor.
void DIType::replaceAllUsesWith(DIDescriptor &D) {
if (!DbgNode)
return;
// Since we use a TrackingVH for the node, its easy for clients to manufacture
// legitimate situations where they want to replaceAllUsesWith() on something
// which, due to uniquing, has merged with the source. We shield clients from
// this detail by allowing a value to be replaced with replaceAllUsesWith()
// itself.
if (DbgNode != D) {
MDNode *Node = const_cast<MDNode*>(DbgNode);
const MDNode *DN = D;
const Value *V = cast_or_null<Value>(DN);
Node->replaceAllUsesWith(const_cast<Value*>(V));
MDNode::deleteTemporary(Node);
}
}
/// Verify - Verify that a compile unit is well formed.
bool DICompileUnit::Verify() const {
if (!DbgNode)
return false;
StringRef N = getFilename();
if (N.empty())
return false;
// It is possible that directory and produce string is empty.
return true;
}
/// Verify - Verify that a type descriptor is well formed.
bool DIType::Verify() const {
if (!DbgNode)
return false;
if (!getContext().Verify())
return false;
DICompileUnit CU = getCompileUnit();
if (!CU.Verify())
return false;
return true;
}
/// Verify - Verify that a basic type descriptor is well formed.
bool DIBasicType::Verify() const {
return isBasicType();
}
/// Verify - Verify that a derived type descriptor is well formed.
bool DIDerivedType::Verify() const {
return isDerivedType();
}
/// Verify - Verify that a composite type descriptor is well formed.
bool DICompositeType::Verify() const {
if (!DbgNode)
return false;
if (!getContext().Verify())
return false;
DICompileUnit CU = getCompileUnit();
if (!CU.Verify())
return false;
return true;
}
/// Verify - Verify that a subprogram descriptor is well formed.
bool DISubprogram::Verify() const {
if (!DbgNode)
return false;
if (!getContext().Verify())
return false;
DICompileUnit CU = getCompileUnit();
if (!CU.Verify())
return false;
DICompositeType Ty = getType();
if (!Ty.Verify())
return false;
return true;
}
/// Verify - Verify that a global variable descriptor is well formed.
bool DIGlobalVariable::Verify() const {
if (!DbgNode)
return false;
if (getDisplayName().empty())
return false;
if (!getContext().Verify())
return false;
DICompileUnit CU = getCompileUnit();
if (!CU.Verify())
return false;
DIType Ty = getType();
if (!Ty.Verify())
return false;
if (!getGlobal() && !getConstant())
return false;
return true;
}
/// Verify - Verify that a variable descriptor is well formed.
bool DIVariable::Verify() const {
if (!DbgNode)
return false;
if (!getContext().Verify())
return false;
if (!getCompileUnit().Verify())
return false;
DIType Ty = getType();
if (!Ty.Verify())
return false;
return true;
}
/// 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 (!DbgNode)
return false;
if (getName().empty())
return false;
if (!getCompileUnit().Verify())
return false;
return true;
}
/// getOriginalTypeSize - If this type is derived from a base type then
/// return base type size.
uint64_t DIDerivedType::getOriginalTypeSize() const {
unsigned Tag = getTag();
if (Tag == dwarf::DW_TAG_member || Tag == dwarf::DW_TAG_typedef ||
Tag == dwarf::DW_TAG_const_type || Tag == dwarf::DW_TAG_volatile_type ||
Tag == dwarf::DW_TAG_restrict_type) {
DIType BaseType = getTypeDerivedFrom();
// If this type is not derived from any type then take conservative
// approach.
if (!BaseType.isValid())
return getSizeInBits();
if (BaseType.isDerivedType())
return DIDerivedType(BaseType).getOriginalTypeSize();
else
return BaseType.getSizeInBits();
}
return getSizeInBits();
}
/// 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 false;
// This variable is not inlined function argument if its scope
// does not describe current function.
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 true;
StringRef Name = getLinkageName();
if (Name.empty())
Name = getName();
if (F->getName() == Name)
return true;
return false;
}
unsigned DISubprogram::isOptimized() const {
assert (DbgNode && "Invalid subprogram descriptor!");
if (DbgNode->getNumOperands() == 16)
return getUnsignedField(15);
return 0;
}
StringRef DIScope::getFilename() const {
if (!DbgNode)
return StringRef();
if (isLexicalBlock())
return DILexicalBlock(DbgNode).getFilename();
if (isSubprogram())
return DISubprogram(DbgNode).getFilename();
if (isCompileUnit())
return DICompileUnit(DbgNode).getFilename();
if (isNameSpace())
return DINameSpace(DbgNode).getFilename();
if (isType())
return DIType(DbgNode).getFilename();
if (isFile())
return DIFile(DbgNode).getFilename();
assert(0 && "Invalid DIScope!");
return StringRef();
}
StringRef DIScope::getDirectory() const {
if (!DbgNode)
return StringRef();
if (isLexicalBlock())
return DILexicalBlock(DbgNode).getDirectory();
if (isSubprogram())
return DISubprogram(DbgNode).getDirectory();
if (isCompileUnit())
return DICompileUnit(DbgNode).getDirectory();
if (isNameSpace())
return DINameSpace(DbgNode).getDirectory();
if (isType())
return DIType(DbgNode).getDirectory();
if (isFile())
return DIFile(DbgNode).getDirectory();
assert(0 && "Invalid DIScope!");
return StringRef();
}
//===----------------------------------------------------------------------===//
// DIDescriptor: dump routines for all descriptors.
//===----------------------------------------------------------------------===//
/// print - Print descriptor.
void DIDescriptor::print(raw_ostream &OS) const {
OS << "[" << dwarf::TagString(getTag()) << "] ";
OS.write_hex((intptr_t) &*DbgNode) << ']';
}
/// print - Print compile unit.
void DICompileUnit::print(raw_ostream &OS) const {
if (getLanguage())
OS << " [" << dwarf::LanguageString(getLanguage()) << "] ";
OS << " [" << getDirectory() << "/" << getFilename() << "]";
}
/// print - Print type.
void DIType::print(raw_ostream &OS) const {
if (!DbgNode) return;
StringRef Res = getName();
if (!Res.empty())
OS << " [" << Res << "] ";
unsigned Tag = getTag();
OS << " [" << dwarf::TagString(Tag) << "] ";
// TODO : Print context
getCompileUnit().print(OS);
OS << " ["
<< "line " << getLineNumber() << ", "
<< getSizeInBits() << " bits, "
<< getAlignInBits() << " bit alignment, "
<< getOffsetInBits() << " bit offset"
<< "] ";
if (isPrivate())
OS << " [private] ";
else if (isProtected())
OS << " [protected] ";
if (isForwardDecl())
OS << " [fwd] ";
if (isBasicType())
DIBasicType(DbgNode).print(OS);
else if (isDerivedType())
DIDerivedType(DbgNode).print(OS);
else if (isCompositeType())
DICompositeType(DbgNode).print(OS);
else {
OS << "Invalid DIType\n";
return;
}
OS << "\n";
}
/// print - Print basic type.
void DIBasicType::print(raw_ostream &OS) const {
OS << " [" << dwarf::AttributeEncodingString(getEncoding()) << "] ";
}
/// print - Print derived type.
void DIDerivedType::print(raw_ostream &OS) const {
OS << "\n\t Derived From: "; getTypeDerivedFrom().print(OS);
}
/// print - Print composite type.
void DICompositeType::print(raw_ostream &OS) const {
DIArray A = getTypeArray();
OS << " [" << A.getNumElements() << " elements]";
}
/// print - Print subprogram.
void DISubprogram::print(raw_ostream &OS) const {
StringRef Res = getName();
if (!Res.empty())
OS << " [" << Res << "] ";
unsigned Tag = getTag();
OS << " [" << dwarf::TagString(Tag) << "] ";
// TODO : Print context
getCompileUnit().print(OS);
OS << " [" << getLineNumber() << "] ";
if (isLocalToUnit())
OS << " [local] ";
if (isDefinition())
OS << " [def] ";
OS << "\n";
}
/// print - Print global variable.
void DIGlobalVariable::print(raw_ostream &OS) const {
OS << " [";
StringRef Res = getName();
if (!Res.empty())
OS << " [" << Res << "] ";
unsigned Tag = getTag();
OS << " [" << dwarf::TagString(Tag) << "] ";
// TODO : Print context
getCompileUnit().print(OS);
OS << " [" << getLineNumber() << "] ";
if (isLocalToUnit())
OS << " [local] ";
if (isDefinition())
OS << " [def] ";
if (isGlobalVariable())
DIGlobalVariable(DbgNode).print(OS);
OS << "]\n";
}
/// print - Print variable.
void DIVariable::print(raw_ostream &OS) const {
StringRef Res = getName();
if (!Res.empty())
OS << " [" << Res << "] ";
getCompileUnit().print(OS);
OS << " [" << getLineNumber() << "] ";
getType().print(OS);
OS << "\n";
// FIXME: Dump complex addresses
}
/// dump - Print descriptor to dbgs() with a newline.
void DIDescriptor::dump() const {
print(dbgs()); dbgs() << '\n';
}
/// dump - Print compile unit to dbgs() with a newline.
void DICompileUnit::dump() const {
print(dbgs()); dbgs() << '\n';
}
/// dump - Print type to dbgs() with a newline.
void DIType::dump() const {
print(dbgs()); dbgs() << '\n';
}
/// dump - Print basic type to dbgs() with a newline.
void DIBasicType::dump() const {
print(dbgs()); dbgs() << '\n';
}
/// dump - Print derived type to dbgs() with a newline.
void DIDerivedType::dump() const {
print(dbgs()); dbgs() << '\n';
}
/// dump - Print composite type to dbgs() with a newline.
void DICompositeType::dump() const {
print(dbgs()); dbgs() << '\n';
}
/// dump - Print subprogram to dbgs() with a newline.
void DISubprogram::dump() const {
print(dbgs()); dbgs() << '\n';
}
/// dump - Print global variable.
void DIGlobalVariable::dump() const {
print(dbgs()); dbgs() << '\n';
}
/// dump - Print variable.
void DIVariable::dump() const {
print(dbgs()); dbgs() << '\n';
}
//===----------------------------------------------------------------------===//
// DIFactory: Basic Helpers
//===----------------------------------------------------------------------===//
DIFactory::DIFactory(Module &m)
: M(m), VMContext(M.getContext()), DeclareFn(0), ValueFn(0) {}
Constant *DIFactory::GetTagConstant(unsigned TAG) {
assert((TAG & LLVMDebugVersionMask) == 0 &&
"Tag too large for debug encoding!");
return ConstantInt::get(Type::getInt32Ty(VMContext), TAG | LLVMDebugVersion);
}
//===----------------------------------------------------------------------===//
// DIFactory: Primary Constructors
//===----------------------------------------------------------------------===//
/// GetOrCreateArray - Create an descriptor for an array of descriptors.
/// This implicitly uniques the arrays created.
DIArray DIFactory::GetOrCreateArray(DIDescriptor *Tys, unsigned NumTys) {
if (NumTys == 0) {
Value *Null = llvm::Constant::getNullValue(Type::getInt32Ty(VMContext));
return DIArray(MDNode::get(VMContext, &Null, 1));
}
SmallVector<Value *, 16> Elts(Tys, Tys+NumTys);
return DIArray(MDNode::get(VMContext, Elts.data(), Elts.size()));
}
/// GetOrCreateSubrange - Create a descriptor for a value range. This
/// implicitly uniques the values returned.
DISubrange DIFactory::GetOrCreateSubrange(int64_t Lo, int64_t Hi) {
Value *Elts[] = {
GetTagConstant(dwarf::DW_TAG_subrange_type),
ConstantInt::get(Type::getInt64Ty(VMContext), Lo),
ConstantInt::get(Type::getInt64Ty(VMContext), Hi)
};
return DISubrange(MDNode::get(VMContext, &Elts[0], 3));
}
/// CreateUnspecifiedParameter - Create unspeicified type descriptor
/// for the subroutine type.
DIDescriptor DIFactory::CreateUnspecifiedParameter() {
Value *Elts[] = {
GetTagConstant(dwarf::DW_TAG_unspecified_parameters)
};
return DIDescriptor(MDNode::get(VMContext, &Elts[0], 1));
}
/// CreateCompileUnit - Create a new descriptor for the specified compile
/// unit. Note that this does not unique compile units within the module.
DICompileUnit DIFactory::CreateCompileUnit(unsigned LangID,
StringRef Filename,
StringRef Directory,
StringRef Producer,
bool isMain,
bool isOptimized,
StringRef Flags,
unsigned RunTimeVer) {
Value *Elts[] = {
GetTagConstant(dwarf::DW_TAG_compile_unit),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
ConstantInt::get(Type::getInt32Ty(VMContext), LangID),
MDString::get(VMContext, Filename),
MDString::get(VMContext, Directory),
MDString::get(VMContext, Producer),
ConstantInt::get(Type::getInt1Ty(VMContext), isMain),
ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
MDString::get(VMContext, Flags),
ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeVer)
};
return DICompileUnit(MDNode::get(VMContext, &Elts[0], 10));
}
/// CreateFile - Create a new descriptor for the specified file.
DIFile DIFactory::CreateFile(StringRef Filename,
StringRef Directory,
DICompileUnit CU) {
Value *Elts[] = {
GetTagConstant(dwarf::DW_TAG_file_type),
MDString::get(VMContext, Filename),
MDString::get(VMContext, Directory),
CU
};
return DIFile(MDNode::get(VMContext, &Elts[0], 4));
}
/// CreateEnumerator - Create a single enumerator value.
DIEnumerator DIFactory::CreateEnumerator(StringRef Name, uint64_t Val){
Value *Elts[] = {
GetTagConstant(dwarf::DW_TAG_enumerator),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt64Ty(VMContext), Val)
};
return DIEnumerator(MDNode::get(VMContext, &Elts[0], 3));
}
/// CreateBasicType - Create a basic type like int, float, etc.
DIBasicType DIFactory::CreateBasicType(DIDescriptor Context,
StringRef Name,
DIFile F,
unsigned LineNumber,
uint64_t SizeInBits,
uint64_t AlignInBits,
uint64_t OffsetInBits, unsigned Flags,
unsigned Encoding) {
Value *Elts[] = {
GetTagConstant(dwarf::DW_TAG_base_type),
Context,
MDString::get(VMContext, Name),
F,
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),
ConstantInt::get(Type::getInt32Ty(VMContext), Encoding)
};
return DIBasicType(MDNode::get(VMContext, &Elts[0], 10));
}
/// CreateBasicType - Create a basic type like int, float, etc.
DIBasicType DIFactory::CreateBasicTypeEx(DIDescriptor Context,
StringRef Name,
DIFile F,
unsigned LineNumber,
Constant *SizeInBits,
Constant *AlignInBits,
Constant *OffsetInBits, unsigned Flags,
unsigned Encoding) {
Value *Elts[] = {
GetTagConstant(dwarf::DW_TAG_base_type),
Context,
MDString::get(VMContext, Name),
F,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
SizeInBits,
AlignInBits,
OffsetInBits,
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
ConstantInt::get(Type::getInt32Ty(VMContext), Encoding)
};
return DIBasicType(MDNode::get(VMContext, &Elts[0], 10));
}
/// CreateArtificialType - Create a new DIType with "artificial" flag set.
DIType DIFactory::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) {
if (Value *V = N->getOperand(i))
Elts.push_back(V);
else
Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext)));
}
unsigned CurFlags = Ty.getFlags();
CurFlags = CurFlags | DIType::FlagArtificial;
// Flags are stored at this slot.
Elts[8] = ConstantInt::get(Type::getInt32Ty(VMContext), CurFlags);
return DIType(MDNode::get(VMContext, Elts.data(), Elts.size()));
}
/// CreateDerivedType - Create a derived type like const qualified type,
/// pointer, typedef, etc.
DIDerivedType DIFactory::CreateDerivedType(unsigned Tag,
DIDescriptor Context,
StringRef Name,
DIFile F,
unsigned LineNumber,
uint64_t SizeInBits,
uint64_t AlignInBits,
uint64_t OffsetInBits,
unsigned Flags,
DIType DerivedFrom) {
Value *Elts[] = {
GetTagConstant(Tag),
Context,
MDString::get(VMContext, Name),
F,
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),
DerivedFrom,
};
return DIDerivedType(MDNode::get(VMContext, &Elts[0], 10));
}
/// CreateDerivedType - Create a derived type like const qualified type,
/// pointer, typedef, etc.
DIDerivedType DIFactory::CreateDerivedTypeEx(unsigned Tag,
DIDescriptor Context,
StringRef Name,
DIFile F,
unsigned LineNumber,
Constant *SizeInBits,
Constant *AlignInBits,
Constant *OffsetInBits,
unsigned Flags,
DIType DerivedFrom) {
Value *Elts[] = {
GetTagConstant(Tag),
Context,
MDString::get(VMContext, Name),
F,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
SizeInBits,
AlignInBits,
OffsetInBits,
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
DerivedFrom,
};
return DIDerivedType(MDNode::get(VMContext, &Elts[0], 10));
}
/// CreateCompositeType - Create a composite type like array, struct, etc.
DICompositeType DIFactory::CreateCompositeType(unsigned Tag,
DIDescriptor Context,
StringRef Name,
DIFile F,
unsigned LineNumber,
uint64_t SizeInBits,
uint64_t AlignInBits,
uint64_t OffsetInBits,
unsigned Flags,
DIType DerivedFrom,
DIArray Elements,
unsigned RuntimeLang,
MDNode *ContainingType) {
Value *Elts[] = {
GetTagConstant(Tag),
Context,
MDString::get(VMContext, Name),
F,
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),
DerivedFrom,
Elements,
ConstantInt::get(Type::getInt32Ty(VMContext), RuntimeLang),
ContainingType
};
MDNode *Node = MDNode::get(VMContext, &Elts[0], 13);
// Create a named metadata so that we do not lose this enum info.
if (Tag == dwarf::DW_TAG_enumeration_type) {
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.enum");
NMD->addOperand(Node);
}
return DICompositeType(Node);
}
/// CreateTemporaryType - Create a temporary forward-declared type.
DIType DIFactory::CreateTemporaryType() {
// Give the temporary MDNode a tag. It doesn't matter what tag we
// use here as long as DIType accepts it.
Value *Elts[] = {
GetTagConstant(DW_TAG_base_type)
};
MDNode *Node = MDNode::getTemporary(VMContext, Elts, array_lengthof(Elts));
return DIType(Node);
}
/// CreateCompositeType - Create a composite type like array, struct, etc.
DICompositeType DIFactory::CreateCompositeTypeEx(unsigned Tag,
DIDescriptor Context,
StringRef Name,
DIFile F,
unsigned LineNumber,
Constant *SizeInBits,
Constant *AlignInBits,
Constant *OffsetInBits,
unsigned Flags,
DIType DerivedFrom,
DIArray Elements,
unsigned RuntimeLang,
MDNode *ContainingType) {
Value *Elts[] = {
GetTagConstant(Tag),
Context,
MDString::get(VMContext, Name),
F,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
SizeInBits,
AlignInBits,
OffsetInBits,
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
DerivedFrom,
Elements,