//===------- ItaniumCXXABI.cpp - Emit LLVM Code from ASTs for a Module ----===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This provides C++ code generation targeting the Itanium C++ ABI. The class
// in this file generates structures that follow the Itanium C++ ABI, which is
// documented at:
// http://www.codesourcery.com/public/cxx-abi/abi.html
// http://www.codesourcery.com/public/cxx-abi/abi-eh.html
//
// It also supports the closely-related ARM ABI, documented at:
// http://infocenter.arm.com/help/topic/com.arm.doc.ihi0041c/IHI0041C_cppabi.pdf
//
//===----------------------------------------------------------------------===//
#include "CGCXXABI.h"
#include "CGRecordLayout.h"
#include "CGVTables.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
#include "clang/AST/Mangle.h"
#include "clang/AST/Type.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/Value.h"
using namespace clang;
using namespace CodeGen;
namespace {
class ItaniumCXXABI : public CodeGen::CGCXXABI {
protected:
bool IsARM;
public:
ItaniumCXXABI(CodeGen::CodeGenModule &CGM, bool IsARM = false) :
CGCXXABI(CGM), IsARM(IsARM) { }
bool isReturnTypeIndirect(const CXXRecordDecl *RD) const {
// Structures with either a non-trivial destructor or a non-trivial
// copy constructor are always indirect.
return !RD->hasTrivialDestructor() || RD->hasNonTrivialCopyConstructor();
}
RecordArgABI getRecordArgABI(const CXXRecordDecl *RD) const {
// Structures with either a non-trivial destructor or a non-trivial
// copy constructor are always indirect.
if (!RD->hasTrivialDestructor() || RD->hasNonTrivialCopyConstructor())
return RAA_Indirect;
return RAA_Default;
}
bool isZeroInitializable(const MemberPointerType *MPT);
llvm::Type *ConvertMemberPointerType(const MemberPointerType *MPT);
llvm::Value *EmitLoadOfMemberFunctionPointer(CodeGenFunction &CGF,
llvm::Value *&This,
llvm::Value *MemFnPtr,
