llvm/llvm/include/llvm/CodeGen/WinEHFuncInfo.h

//===- llvm/CodeGen/WinEHFuncInfo.h -----------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Data structures and associated state for Windows exception handling schemes.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CODEGEN_WINEHFUNCINFO_H
#define LLVM_CODEGEN_WINEHFUNCINFO_H

#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/PointerUnion.h"
#include "llvm/ADT/SmallVector.h"
#include <cstdint>
#include <limits>
#include <utility>

namespace llvm {

class AllocaInst;
class BasicBlock;
class FuncletPadInst;
class Function;
class GlobalVariable;
class Instruction;
class InvokeInst;
class MachineBasicBlock;
class MCSymbol;

// The following structs respresent the .xdata tables for various
// Windows-related EH personalities.

MBBOrBasicBlock;

struct CxxUnwindMapEntry { … };

/// Similar to CxxUnwindMapEntry, but supports SEH filters.
struct SEHUnwindMapEntry { … };

struct WinEHHandlerType { … };

struct WinEHTryBlockMapEntry { … };

enum class ClrHandlerType { … };

struct ClrEHUnwindMapEntry { … };

struct WinEHFuncInfo { … };

/// Analyze the IR in ParentFn and it's handlers to build WinEHFuncInfo, which
/// describes the state numbers and tables used by __CxxFrameHandler3. This
/// analysis assumes that WinEHPrepare has already been run.
void calculateWinCXXEHStateNumbers(const Function *ParentFn,
                                   WinEHFuncInfo &FuncInfo);

void calculateSEHStateNumbers(const Function *ParentFn,
                              WinEHFuncInfo &FuncInfo);

void calculateClrEHStateNumbers(const Function *Fn, WinEHFuncInfo &FuncInfo);

// For AsynchEH (VC++ option -EHa)
void calculateCXXStateForAsynchEH(const BasicBlock *BB, int State,
                                  WinEHFuncInfo &FuncInfo);
void calculateSEHStateForAsynchEH(const BasicBlock *BB, int State,
                                  WinEHFuncInfo &FuncInfo);

} // end namespace llvm

#endif // LLVM_CODEGEN_WINEHFUNCINFO_H