4045b62d4c
This adds the macrofusion plumbing and support fusing LUI+ADDI(W). This is similar to D73643, but handles a different case. Other cases can be added in the future. Reviewed By: reames Differential Revision: https://reviews.llvm.org/D128393
29 lines
1000 B
C++
29 lines
1000 B
C++
//===- RISCVMacroFusion.h - RISCV Macro Fusion ----------------------------===//
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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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/// \file This file contains the RISCV definition of the DAG scheduling mutation
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/// to pair instructions back to back.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_RISCV_RISCVMACROFUSION_H
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#define LLVM_LIB_TARGET_RISCV_RISCVMACROFUSION_H
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#include "llvm/CodeGen/MachineScheduler.h"
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namespace llvm {
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/// Note that you have to add:
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/// DAG.addMutation(createRISCVMacroFusionDAGMutation());
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/// to RISCVPassConfig::createMachineScheduler() to have an effect.
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std::unique_ptr<ScheduleDAGMutation> createRISCVMacroFusionDAGMutation();
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} // namespace llvm
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#endif
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