| //===-- ARMHazardRecognizer.h - ARM Hazard Recognizers ----------*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines hazard recognizers for scheduling ARM functions. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_ARM_ARMHAZARDRECOGNIZER_H |
| #define LLVM_LIB_TARGET_ARM_ARMHAZARDRECOGNIZER_H |
| |
| #include "ARMBaseInstrInfo.h" |
| #include "llvm/ADT/BitmaskEnum.h" |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/CodeGen/ScheduleHazardRecognizer.h" |
| #include "llvm/Support/DataTypes.h" |
| #include <array> |
| #include <initializer_list> |
| |
| namespace llvm { |
| |
| class DataLayout; |
| class MachineFunction; |
| class MachineInstr; |
| class ScheduleDAG; |
| |
| // Hazards related to FP MLx instructions |
| class ARMHazardRecognizerFPMLx : public ScheduleHazardRecognizer { |
| MachineInstr *LastMI = nullptr; |
| unsigned FpMLxStalls = 0; |
| |
| public: |
| ARMHazardRecognizerFPMLx() : ScheduleHazardRecognizer() { MaxLookAhead = 1; } |
| |
| HazardType getHazardType(SUnit *SU, int Stalls) override; |
| void Reset() override; |
| void EmitInstruction(SUnit *SU) override; |
| void AdvanceCycle() override; |
| void RecedeCycle() override; |
| }; |
| |
| // Hazards related to bank conflicts |
| class ARMBankConflictHazardRecognizer : public ScheduleHazardRecognizer { |
| SmallVector<MachineInstr *, 8> Accesses; |
| const MachineFunction &MF; |
| const DataLayout &DL; |
| int64_t DataMask; |
| bool AssumeITCMBankConflict; |
| |
| public: |
| ARMBankConflictHazardRecognizer(const ScheduleDAG *DAG, int64_t DDM, |
| bool ABC); |
| HazardType getHazardType(SUnit *SU, int Stalls) override; |
| void Reset() override; |
| void EmitInstruction(SUnit *SU) override; |
| void AdvanceCycle() override; |
| void RecedeCycle() override; |
| |
| private: |
| inline HazardType CheckOffsets(unsigned O0, unsigned O1); |
| }; |
| |
| } // end namespace llvm |
| |
| #endif |