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//== ----- llvm/CodeGen/GlobalISel/Combiner.h -------------------*- C++ -*-== //
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
/// \file
/// This contains common code to drive combines. Combiner Passes will need to
/// setup a CombinerInfo and call combineMachineFunction.
#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
namespace llvm {
class MachineRegisterInfo;
class CombinerInfo;
class GISelCSEInfo;
class TargetPassConfig;
class MachineFunction;
class Combiner {
Combiner(CombinerInfo &CombinerInfo, const TargetPassConfig *TPC);
/// If CSEInfo is not null, then the Combiner will setup observer for
/// CSEInfo and instantiate a CSEMIRBuilder. Pass nullptr if CSE is not
/// needed.
bool combineMachineInstrs(MachineFunction &MF, GISelCSEInfo *CSEInfo);
CombinerInfo &CInfo;
MachineRegisterInfo *MRI = nullptr;
const TargetPassConfig *TPC;
std::unique_ptr<MachineIRBuilder> Builder;
} // End namespace llvm.