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//===--- CGCXXRtti.cpp - Emit LLVM Code for C++ RTTI descriptors ----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This contains code dealing with C++ code generation of RTTI descriptors.
//
//===----------------------------------------------------------------------===//
#include "CodeGenModule.h"
using namespace clang;
using namespace CodeGen;
llvm::Constant *CodeGenModule::GenerateRtti(const CXXRecordDecl *RD) {
llvm::Type *Ptr8Ty;
Ptr8Ty = llvm::PointerType::get(llvm::Type::getInt8Ty(VMContext), 0);
llvm::Constant *Rtti = llvm::Constant::getNullValue(Ptr8Ty);
if (!getContext().getLangOptions().Rtti)
return Rtti;
llvm::SmallString<256> OutName;
llvm::raw_svector_ostream Out(OutName);
mangleCXXRtti(getMangleContext(), RD, Out);
llvm::GlobalVariable::LinkageTypes linktype;
linktype = llvm::GlobalValue::WeakAnyLinkage;
std::vector<llvm::Constant *> info;
// assert(0 && "FIXME: implement rtti descriptor");
// FIXME: descriptor
info.push_back(llvm::Constant::getNullValue(Ptr8Ty));
// assert(0 && "FIXME: implement rtti ts");
// FIXME: TS
info.push_back(llvm::Constant::getNullValue(Ptr8Ty));
llvm::Constant *C;
llvm::ArrayType *type = llvm::ArrayType::get(Ptr8Ty, info.size());
C = llvm::ConstantArray::get(type, info);
Rtti = new llvm::GlobalVariable(getModule(), type, true, linktype, C,
Out.str());
Rtti = llvm::ConstantExpr::getBitCast(Rtti, Ptr8Ty);
return Rtti;
}
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