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