llvm-6502/lib/Analysis/DIBuilder.cpp
2010-12-08 21:46:37 +00:00

761 lines
31 KiB
C++

//===--- 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/Analysis/DIBuilder.h"
#include "llvm/Analysis/DebugInfo.h"
#include "llvm/Constants.h"
#include "llvm/IntrinsicInst.h"
#include "llvm/Module.h"
#include "llvm/ADT/STLExtras.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()), TheCU(0), DeclareFn(0), ValueFn(0) {}
/// CreateCompileUnit - A CompileUnit provides an anchor for all debugging
/// information generated during this instance of compilation.
void DIBuilder::CreateCompileUnit(unsigned Lang, StringRef Filename,
StringRef Directory, StringRef Producer,
bool isOptimized, StringRef Flags,
unsigned RunTimeVer) {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_compile_unit),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
ConstantInt::get(Type::getInt32Ty(VMContext), Lang),
MDString::get(VMContext, Filename),
MDString::get(VMContext, Directory),
MDString::get(VMContext, Producer),
// Deprecate isMain field.
ConstantInt::get(Type::getInt1Ty(VMContext), true), // isMain
ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
MDString::get(VMContext, Flags),
ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeVer)
};
TheCU = DICompileUnit(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateFile - Create a file descriptor to hold debugging information
/// for a file.
DIFile DIBuilder::CreateFile(StringRef Filename, StringRef Directory) {
assert(TheCU && "Unable to create DW_TAG_file_type without CompileUnit");
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_file_type),
MDString::get(VMContext, Filename),
MDString::get(VMContext, Directory),
TheCU
};
return DIFile(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateEnumerator - Create a single enumerator value.
DIEnumerator DIBuilder::CreateEnumerator(StringRef Name, uint64_t Val) {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_enumerator),
MDString::get(VMContext, Name),
ConstantInt::get(Type::getInt64Ty(VMContext), Val)
};
return DIEnumerator(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateBasicType - Create debugging information entry for a basic
/// type, e.g 'char'.
DIType DIBuilder::CreateBasicType(StringRef Name, uint64_t SizeInBits,
uint64_t AlignInBits,
unsigned Encoding) {
// 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),
TheCU,
MDString::get(VMContext, Name),
NULL, // Filename
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 DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateQaulifiedType - Create debugging information entry for a qualified
/// type, e.g. 'const int'.
DIType DIBuilder::CreateQualifiedType(unsigned Tag, DIType FromTy) {
// Qualified types are encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, Tag),
TheCU,
MDString::get(VMContext, StringRef()), // Empty name.
NULL, // Filename
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
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreatePointerType - Create debugging information entry for a pointer.
DIType 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),
TheCU,
MDString::get(VMContext, Name),
NULL, // Filename
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
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateReferenceType - Create debugging information entry for a reference.
DIType DIBuilder::CreateReferenceType(DIType RTy) {
// References are encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_reference_type),
TheCU,
NULL, // Name
NULL, // Filename
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
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateTypedef - Create debugging information entry for a typedef.
DIType DIBuilder::CreateTypedef(DIType Ty, StringRef Name, DIFile File,
unsigned LineNo) {
// typedefs are encoded in DIDerivedType format.
assert(Ty.Verify() && "Invalid typedef type!");
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_typedef),
Ty.getContext(),
MDString::get(VMContext, Name),
File,
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
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateFriend - Create debugging information entry for a 'friend'.
DIType DIBuilder::CreateFriend(DIType Ty, DIType FriendTy) {
// typedefs are encoded in DIDerivedType format.
assert(Ty.Verify() && "Invalid type!");
assert(FriendTy.Verify() && "Invalid friend type!");
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_friend),
Ty,
NULL, // Name
Ty.getFile(),
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
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateInheritance - Create debugging information entry to establish
/// inheritnace relationship between two types.
DIType DIBuilder::CreateInheritance(DIType Ty, DIType BaseTy,
uint64_t BaseOffset, unsigned Flags) {
// TAG_inheritance is encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_inheritance),
Ty,
NULL, // Name
Ty.getFile(),
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
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateMemberType - Create debugging information entry for a member.
DIType DIBuilder::CreateMemberType(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, // Or TheCU ? Ty ?
MDString::get(VMContext, Name),
File,
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
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateClassType - Create debugging information entry for a class.
DIType 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,
MDNode *VTableHoder) {
// TAG_class_type is encoded in DICompositeType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_class_type),
Context,
MDString::get(VMContext, Name),
File,
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,
Elements,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
VTableHoder
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateStructType - Create debugging information entry for a struct.
DIType DIBuilder::CreateStructType(DIDescriptor Context, StringRef Name,
DIFile File, unsigned LineNumber,
uint64_t SizeInBits, uint64_t AlignInBits,
unsigned Flags, DIArray Elements,
unsigned RunTimeLang) {
// TAG_structure_type is encoded in DICompositeType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_structure_type),
Context,
MDString::get(VMContext, Name),
File,
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),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
Elements,
ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateUnionType - Create debugging information entry for an union.
DIType DIBuilder::CreateUnionType(DIDescriptor Scope, StringRef Name,
DIFile File,
unsigned LineNumber, uint64_t SizeInBits,
uint64_t AlignInBits, unsigned Flags,
DIArray Elements, unsigned RunTimeLang) {
// TAG_union_type is encoded in DICompositeType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_union_type),
Scope,
MDString::get(VMContext, Name),
File,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), 0),
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
Elements,
ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateSubroutineType - Create subroutine type.
DIType DIBuilder::CreateSubroutineType(DIFile File, DIArray ParameterTypes) {
// TAG_subroutine_type is encoded in DICompositeType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_subroutine_type),
File,
MDString::get(VMContext, ""),
File,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
ConstantInt::get(Type::getInt64Ty(VMContext), 0),
ConstantInt::get(Type::getInt64Ty(VMContext), 0),
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
ParameterTypes,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateEnumerationType - Create debugging information entry for an
/// enumeration.
DIType DIBuilder::CreateEnumerationType(DIDescriptor Scope, StringRef Name,
DIFile File, unsigned LineNumber,
uint64_t SizeInBits,
uint64_t AlignInBits, DIArray Elements) {
// TAG_enumeration_type is encoded in DICompositeType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_enumeration_type),
Scope,
MDString::get(VMContext, Name),
File,
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), 0),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
Elements,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
};
MDNode *Node = MDNode::get(VMContext, &Elts[0], array_lengthof(Elts));
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.enum");
NMD->addOperand(Node);
return DIType(Node);
}
/// CreateArrayType - Create debugging information entry for an array.
DIType 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),
TheCU,
MDString::get(VMContext, ""),
TheCU,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
ConstantInt::get(Type::getInt64Ty(VMContext), Size),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
Ty,
Subscripts,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// CreateVectorType - Create debugging information entry for a vector.
DIType DIBuilder::CreateVectorType(uint64_t Size, uint64_t AlignInBits,
DIType Ty, DIArray Subscripts) {
// TAG_vector_type is encoded in DICompositeType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_vector_type),
TheCU,
MDString::get(VMContext, ""),
TheCU,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
ConstantInt::get(Type::getInt64Ty(VMContext), Size),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
Ty,
Subscripts,
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
};
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(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) {
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()));
}
/// RetainType - Retain DIType in a module even if it is not referenced
/// through debug info anchors.
void DIBuilder::RetainType(DIType T) {
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.ty");
NMD->addOperand(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[0], 1));
}
/// CreateTemporaryType - Create a temporary forward-declared type.
DIType DIBuilder::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(VMContext, DW_TAG_base_type) };
MDNode *Node = MDNode::getTemporary(VMContext, Elts, array_lengthof(Elts));
return DIType(Node);
}
/// CreateTemporaryType - Create a temporary forward-declared type.
DIType DIBuilder::CreateTemporaryType(DIFile F) {
// Give the temporary MDNode a tag. It doesn't matter what tag we
// use here as long as DIType accepts it.
Value *Elts[] = {
GetTagConstant(VMContext, DW_TAG_base_type),
F.getCompileUnit(),
NULL,
F
};
MDNode *Node = MDNode::getTemporary(VMContext, Elts, array_lengthof(Elts));
return DIType(Node);
}
/// GetOrCreateArray - Get a DIArray, create one if required.
DIArray DIBuilder::GetOrCreateArray(Value *const *Elements, unsigned NumElements) {
if (NumElements == 0) {
Value *Null = llvm::Constant::getNullValue(Type::getInt32Ty(VMContext));
return DIArray(MDNode::get(VMContext, &Null, 1));
}
return DIArray(MDNode::get(VMContext, Elements, NumElements));
}
/// GetOrCreateSubrange - Create a descriptor for a value range. This
/// implicitly uniques the values returned.
DISubrange DIBuilder::GetOrCreateSubrange(int64_t Lo, int64_t Hi) {
Value *Elts[] = {
GetTagConstant(VMContext, 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));
}
/// CreateGlobalVariable - Create a new descriptor for the specified global.
DIGlobalVariable DIBuilder::
CreateGlobalVariable(StringRef Name, DIFile F, unsigned LineNumber,
DIType Ty, bool isLocalToUnit, llvm::Value *Val) {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_variable),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
TheCU,
MDString::get(VMContext, Name),
MDString::get(VMContext, Name),
MDString::get(VMContext, Name),
F,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
Ty,
ConstantInt::get(Type::getInt32Ty(VMContext), isLocalToUnit),
ConstantInt::get(Type::getInt32Ty(VMContext), 1), /* isDefinition*/
Val
};
MDNode *Node = MDNode::get(VMContext, &Elts[0], array_lengthof(Elts));
// Create a named metadata so that we do not lose this mdnode.
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.gv");
NMD->addOperand(Node);
return DIGlobalVariable(Node);
}
/// CreateStaticVariable - Create a new descriptor for the specified static
/// variable.
DIGlobalVariable DIBuilder::
CreateStaticVariable(DIDescriptor Context, StringRef Name,
StringRef LinkageName, DIFile F, unsigned LineNumber,
DIType Ty, bool isLocalToUnit, llvm::Value *Val) {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_variable),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
Context,
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
};
MDNode *Node = MDNode::get(VMContext, &Elts[0], array_lengthof(Elts));
// Create a named metadata so that we do not lose this mdnode.
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.gv");
NMD->addOperand(Node);
return DIGlobalVariable(Node);
}
/// CreateVariable - Create a new descriptor for the specified variable.
DIVariable DIBuilder::CreateLocalVariable(unsigned Tag, DIDescriptor Scope,
StringRef Name, DIFile File,
unsigned LineNo, DIType Ty,
bool AlwaysPreserve, unsigned Flags) {
Value *Elts[] = {
GetTagConstant(VMContext, Tag),
Scope,
MDString::get(VMContext, Name),
File,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
Ty,
ConstantInt::get(Type::getInt32Ty(VMContext), Flags)
};
MDNode *Node = MDNode::get(VMContext, &Elts[0], array_lengthof(Elts));
if (AlwaysPreserve) {
// The optimizer may remove local variable. If there is an interest
// to preserve variable info in such situation then stash it in a
// named mdnode.
DISubprogram Fn(getDISubprogram(Scope));
StringRef FName = "fn";
if (Fn.getFunction())
FName = Fn.getFunction()->getName();
char One = '\1';
if (FName.startswith(StringRef(&One, 1)))
FName = FName.substr(1);
NamedMDNode *FnLocals = getOrInsertFnSpecificMDNode(M, FName);
FnLocals->addOperand(Node);
}
return DIVariable(Node);
}
/// CreateComplexVariable - Create a new descriptor for the specified variable
/// which has a complex address expression for its address.
DIVariable DIBuilder::CreateComplexVariable(unsigned Tag, DIDescriptor Scope,
StringRef Name, DIFile F,
unsigned LineNo,
DIType Ty, Value *const *Addr,
unsigned NumAddr) {
SmallVector<Value *, 15> Elts;
Elts.push_back(GetTagConstant(VMContext, Tag));
Elts.push_back(Scope);
Elts.push_back(MDString::get(VMContext, Name));
Elts.push_back(F);
Elts.push_back(ConstantInt::get(Type::getInt32Ty(VMContext), LineNo));
Elts.push_back(Ty);
Elts.append(Addr, Addr+NumAddr);
return DIVariable(MDNode::get(VMContext, Elts.data(), Elts.size()));
}
/// CreateFunction - Create a new descriptor for the specified function.
DISubprogram DIBuilder::CreateFunction(DIDescriptor Context,
StringRef Name,
StringRef LinkageName,
DIFile File, unsigned LineNo,
DIType Ty,
bool isLocalToUnit, bool isDefinition,
unsigned Flags, bool isOptimized,
Function *Fn) {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
Context,
MDString::get(VMContext, Name),
MDString::get(VMContext, Name),
MDString::get(VMContext, LinkageName),
File,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
Ty,
ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
ConstantInt::get(Type::getInt32Ty(VMContext), 0),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
Fn
};
MDNode *Node = MDNode::get(VMContext, &Elts[0], array_lengthof(Elts));
// Create a named metadata so that we do not lose this mdnode.
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.sp");
NMD->addOperand(Node);
return DISubprogram(Node);
}
/// CreateMethod - Create a new descriptor for the specified C++ method.
DISubprogram DIBuilder::CreateMethod(DIDescriptor Context,
StringRef Name,
StringRef LinkageName,
DIFile F,
unsigned LineNo, DIType Ty,
bool isLocalToUnit,
bool isDefinition,
unsigned VK, unsigned VIndex,
MDNode *VTableHolder,
unsigned Flags,
bool isOptimized,
Function *Fn) {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
Context,
MDString::get(VMContext, Name),
MDString::get(VMContext, Name),
MDString::get(VMContext, LinkageName),
F,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
Ty,
ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
ConstantInt::get(Type::getInt32Ty(VMContext), (unsigned)VK),
ConstantInt::get(Type::getInt32Ty(VMContext), VIndex),
VTableHolder,
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
Fn
};
MDNode *Node = MDNode::get(VMContext, &Elts[0], array_lengthof(Elts));
// Create a named metadata so that we do not lose this mdnode.
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.sp");
NMD->addOperand(Node);
return DISubprogram(Node);
}
/// CreateNameSpace - This creates new descriptor for a namespace
/// with the specified parent scope.
DINameSpace DIBuilder::CreateNameSpace(DIDescriptor Scope, StringRef Name,
DIFile File, unsigned LineNo) {
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_namespace),
Scope,
MDString::get(VMContext, Name),
File,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo)
};
return DINameSpace(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
DILexicalBlock DIBuilder::CreateLexicalBlock(DIDescriptor Scope, DIFile File,
unsigned Line, unsigned Col) {
// Defeat MDNode uniqing for lexical blocks by using unique id.
static unsigned int unique_id = 0;
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_lexical_block),
Scope,
ConstantInt::get(Type::getInt32Ty(VMContext), Line),
ConstantInt::get(Type::getInt32Ty(VMContext), Col),
File,
ConstantInt::get(Type::getInt32Ty(VMContext), unique_id++)
};
return DILexicalBlock(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
/// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
Instruction *DIBuilder::InsertDeclare(Value *Storage, DIVariable VarInfo,
Instruction *InsertBefore) {
assert(Storage && "no storage passed to dbg.declare");
assert(VarInfo.Verify() && "empty DIVariable passed to dbg.declare");
if (!DeclareFn)
DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
Value *Args[] = { MDNode::get(Storage->getContext(), &Storage, 1), VarInfo };
return CallInst::Create(DeclareFn, Args, Args+2, "", InsertBefore);
}
/// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
Instruction *DIBuilder::InsertDeclare(Value *Storage, DIVariable VarInfo,
BasicBlock *InsertAtEnd) {
assert(Storage && "no storage passed to dbg.declare");
assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.declare");
if (!DeclareFn)
DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
Value *Args[] = { MDNode::get(Storage->getContext(), &Storage, 1), VarInfo };
// If this block already has a terminator then insert this intrinsic
// before the terminator.
if (TerminatorInst *T = InsertAtEnd->getTerminator())
return CallInst::Create(DeclareFn, Args, Args+2, "", T);
else
return CallInst::Create(DeclareFn, Args, Args+2, "", InsertAtEnd);
}
/// InsertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
Instruction *DIBuilder::InsertDbgValueIntrinsic(Value *V, uint64_t Offset,
DIVariable VarInfo,
Instruction *InsertBefore) {
assert(V && "no value passed to dbg.value");
assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.value");
if (!ValueFn)
ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
Value *Args[] = { MDNode::get(V->getContext(), &V, 1),
ConstantInt::get(Type::getInt64Ty(V->getContext()), Offset),
VarInfo };
return CallInst::Create(ValueFn, Args, Args+3, "", InsertBefore);
}
/// InsertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
Instruction *DIBuilder::InsertDbgValueIntrinsic(Value *V, uint64_t Offset,
DIVariable VarInfo,
BasicBlock *InsertAtEnd) {
assert(V && "no value passed to dbg.value");
assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.value");
if (!ValueFn)
ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
Value *Args[] = { MDNode::get(V->getContext(), &V, 1),
ConstantInt::get(Type::getInt64Ty(V->getContext()), Offset),
VarInfo };
return CallInst::Create(ValueFn, Args, Args+3, "", InsertAtEnd);
}