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Add support to create variables, structs etc.. using DIBuilder.

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This is still work in progress.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121205 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2010-12-07 23:25:47 +00:00
parent 953af2c3c5
commit fe58f95f36
4 changed files with 371 additions and 12 deletions
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214
lib/Analysis/DIBuilder.cpp
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@@ -28,7 +28,7 @@ static Constant *GetTagConstant(LLVMContext &VMContext, unsigned Tag) {
return ConstantInt::get(Type::getInt32Ty(VMContext), Tag | LLVMDebugVersion);
}
DIBuilder::DIBuilder(Module &m)
: M(m), VMContext(M.getContext()), TheCU(0) {}
: 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.
@@ -214,17 +214,17 @@ DIType DIBuilder::CreateInheritance(DIType Ty, DIType BaseTy,
}
/// CreateMemberType - Create debugging information entry for a member.
DIType DIBuilder::CreateMemberType(DIDescriptor Context, StringRef Name,
DIFile F, unsigned LineNumber,
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),
Context,
File, // Or TheCU ? Ty ?
MDString::get(VMContext, Name),
F,
File,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
@@ -235,6 +235,30 @@ DIType DIBuilder::CreateMemberType(DIDescriptor Context, StringRef Name,
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 F,
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),
F,
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
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)));
}
/// CreateArtificialType - Create a new DIType with "artificial" flag set.
DIType DIBuilder::CreateArtificialType(DIType Ty) {
if (Ty.isArtificial())
@@ -258,3 +282,183 @@ DIType DIBuilder::CreateArtificialType(DIType Ty) {
return DIType(MDNode::get(VMContext, Elts.data(), Elts.size()));
}
/// 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));
}
/// CreateGlobalVariable - Create a new descriptor for the specified global.
DIGlobalVariable DIBuilder::
CreateGlobalVariable(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)),
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
};
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);
}
/// 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()));
}
/// 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)));
}
/// 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);
}