llvm/llvm/include/llvm/CodeGen/MachineOutliner.h

//===---- MachineOutliner.h - Outliner data structures ------*- 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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// Contains all data structures shared between the outliner implemented in
/// MachineOutliner.cpp and target implementations of the outliner.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_CODEGEN_MACHINEOUTLINER_H
#define LLVM_CODEGEN_MACHINEOUTLINER_H

#include "llvm/CodeGen/LiveRegUnits.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/MachineStableHash.h"
#include <initializer_list>

namespace llvm {
namespace outliner {

/// Represents how an instruction should be mapped by the outliner.
/// \p Legal instructions are those which are safe to outline.
/// \p LegalTerminator instructions are safe to outline, but only as the
/// last instruction in a sequence.
/// \p Illegal instructions are those which cannot be outlined.
/// \p Invisible instructions are instructions which can be outlined, but
/// shouldn't actually impact the outlining result.
enum InstrType { … };

/// An individual sequence of instructions to be replaced with a call to
/// an outlined function.
struct Candidate { … };

/// The information necessary to create an outlined function for some
/// class of candidate.
struct OutlinedFunction { … };

/// The information necessary to create an outlined function that is matched
/// globally.
struct GlobalOutlinedFunction : public OutlinedFunction { … };

} // namespace outliner
} // namespace llvm

#endif