llvm/llvm/include/llvm/CodeGen/GlobalISel/IRTranslator.h

//===- llvm/CodeGen/GlobalISel/IRTranslator.h - IRTranslator ----*- 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
/// This file declares the IRTranslator pass.
/// This pass is responsible for translating LLVM IR into MachineInstr.
/// It uses target hooks to lower the ABI but aside from that, the pass
/// generated code is generic. This is the default translator used for
/// GlobalISel.
///
/// \todo Replace the comments with actual doxygen comments.
//===----------------------------------------------------------------------===//

#ifndef LLVM_CODEGEN_GLOBALISEL_IRTRANSLATOR_H
#define LLVM_CODEGEN_GLOBALISEL_IRTRANSLATOR_H

#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/CodeGenCommonISel.h"
#include "llvm/CodeGen/FunctionLoweringInfo.h"
#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/SwiftErrorValueTracking.h"
#include "llvm/CodeGen/SwitchLoweringUtils.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/CodeGen.h"
#include <memory>
#include <utility>

namespace llvm {

class AllocaInst;
class AssumptionCache;
class BasicBlock;
class CallInst;
class CallLowering;
class Constant;
class ConstrainedFPIntrinsic;
class DataLayout;
class DbgDeclareInst;
class DbgValueInst;
class Instruction;
class MachineBasicBlock;
class MachineFunction;
class MachineInstr;
class MachineRegisterInfo;
class OptimizationRemarkEmitter;
class PHINode;
class TargetLibraryInfo;
class TargetPassConfig;
class User;
class Value;

// Technically the pass should run on an hypothetical MachineModule,
// since it should translate Global into some sort of MachineGlobal.
// The MachineGlobal should ultimately just be a transfer of ownership of
// the interesting bits that are relevant to represent a global value.
// That being said, we could investigate what would it cost to just duplicate
// the information from the LLVM IR.
// The idea is that ultimately we would be able to free up the memory used
// by the LLVM IR as soon as the translation is over.
class IRTranslator : public MachineFunctionPass { … };

} // end namespace llvm

#endif // LLVM_CODEGEN_GLOBALISEL_IRTRANSLATOR_H