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