| 1 | //===---------------------- RetireStage.h -----------------------*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | /// \file |
| 9 | /// |
| 10 | /// This file defines the retire stage of a default instruction pipeline. |
| 11 | /// The RetireStage represents the process logic that interacts with the |
| 12 | /// simulated RetireControlUnit hardware. |
| 13 | // |
| 14 | //===----------------------------------------------------------------------===// |
| 15 | |
| 16 | #ifndef LLVM_MCA_STAGES_RETIRESTAGE_H |
| 17 | #define LLVM_MCA_STAGES_RETIRESTAGE_H |
| 18 | |
| 19 | #include "llvm/ADT/SmallVector.h" |
| 20 | #include "llvm/MCA/HardwareUnits/LSUnit.h" |
| 21 | #include "llvm/MCA/HardwareUnits/RegisterFile.h" |
| 22 | #include "llvm/MCA/HardwareUnits/RetireControlUnit.h" |
| 23 | #include "llvm/MCA/Stages/Stage.h" |
| 24 | |
| 25 | namespace llvm { |
| 26 | namespace mca { |
| 27 | |
| 28 | class RetireStage final : public Stage { |
| 29 | // Owner will go away when we move listeners/eventing to the stages. |
| 30 | RetireControlUnit &RCU; |
| 31 | RegisterFile &PRF; |
| 32 | LSUnitBase &LSU; |
| 33 | |
| 34 | RetireStage(const RetireStage &Other) = delete; |
| 35 | RetireStage &operator=(const RetireStage &Other) = delete; |
| 36 | |
| 37 | public: |
| 38 | RetireStage(RetireControlUnit &R, RegisterFile &F, LSUnitBase &LS) |
| 39 | : RCU(R), PRF(F), LSU(LS) {} |
| 40 | |
| 41 | bool hasWorkToComplete() const override { return !RCU.isEmpty(); } |
| 42 | Error cycleStart() override; |
| 43 | Error cycleEnd() override; |
| 44 | Error execute(InstRef &IR) override; |
| 45 | void notifyInstructionRetired(const InstRef &IR) const; |
| 46 | }; |
| 47 | |
| 48 | } // namespace mca |
| 49 | } // namespace llvm |
| 50 | |
| 51 | #endif // LLVM_MCA_STAGES_RETIRESTAGE_H |
| 52 |