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1//===- LoongArchSubtarget.h - Define Subtarget for the LoongArch -*- 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-exception6//7//===----------------------------------------------------------------------===//8//9// This file declares the LoongArch specific subclass of TargetSubtargetInfo.10//11//===----------------------------------------------------------------------===//12 13#ifndef LLVM_LIB_TARGET_LOONGARCH_LOONGARCHSUBTARGET_H14#define LLVM_LIB_TARGET_LOONGARCH_LOONGARCHSUBTARGET_H15 16#include "LoongArchFrameLowering.h"17#include "LoongArchISelLowering.h"18#include "LoongArchInstrInfo.h"19#include "LoongArchRegisterInfo.h"20#include "MCTargetDesc/LoongArchBaseInfo.h"21#include "llvm/CodeGen/TargetSubtargetInfo.h"22#include "llvm/IR/DataLayout.h"23#include "llvm/Target/TargetMachine.h"24 25#define GET_SUBTARGETINFO_HEADER26#include "LoongArchGenSubtargetInfo.inc"27 28namespace llvm {29class StringRef;30 31class LoongArchSubtarget : public LoongArchGenSubtargetInfo {32 virtual void anchor();33 34#define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER) \35 bool ATTRIBUTE = DEFAULT;36#include "LoongArchGenSubtargetInfo.inc"37 38 unsigned GRLen = 32;39 // TODO: The default value is empirical and conservative. Override the40 // default in initializeProperties once we support optimizing for more41 // uarches.42 uint8_t MaxInterleaveFactor = 2;43 MVT GRLenVT = MVT::i32;44 LoongArchABI::ABI TargetABI = LoongArchABI::ABI_Unknown;45 LoongArchFrameLowering FrameLowering;46 LoongArchInstrInfo InstrInfo;47 LoongArchTargetLowering TLInfo;48 std::unique_ptr<const SelectionDAGTargetInfo> TSInfo;49 50 Align PrefFunctionAlignment;51 Align PrefLoopAlignment;52 unsigned MaxBytesForAlignment;53 54 /// Initializes using the passed in CPU and feature strings so that we can55 /// use initializer lists for subtarget initialization.56 LoongArchSubtarget &initializeSubtargetDependencies(const Triple &TT,57 StringRef CPU,58 StringRef TuneCPU,59 StringRef FS,60 StringRef ABIName);61 62 /// Initialize properties based on the selected processor family.63 void initializeProperties(StringRef TuneCPU);64 65public:66 // Initializes the data members to match that of the specified triple.67 LoongArchSubtarget(const Triple &TT, StringRef CPU, StringRef TuneCPU,68 StringRef FS, StringRef ABIName, const TargetMachine &TM);69 70 ~LoongArchSubtarget() override;71 72 // Parses features string setting specified subtarget options. The73 // definition of this function is auto-generated by tblgen.74 void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS);75 76 const LoongArchFrameLowering *getFrameLowering() const override {77 return &FrameLowering;78 }79 const LoongArchInstrInfo *getInstrInfo() const override { return &InstrInfo; }80 const LoongArchRegisterInfo *getRegisterInfo() const override {81 return &InstrInfo.getRegisterInfo();82 }83 const LoongArchTargetLowering *getTargetLowering() const override {84 return &TLInfo;85 }86 87 const SelectionDAGTargetInfo *getSelectionDAGInfo() const override;88 89#define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER) \90 bool GETTER() const { return ATTRIBUTE; }91#include "LoongArchGenSubtargetInfo.inc"92 93 bool is64Bit() const { return HasLA64; }94 MVT getGRLenVT() const { return GRLenVT; }95 unsigned getGRLen() const { return GRLen; }96 LoongArchABI::ABI getTargetABI() const { return TargetABI; }97 bool isSoftFPABI() const {98 return TargetABI == LoongArchABI::ABI_LP64S ||99 TargetABI == LoongArchABI::ABI_ILP32S;100 }101 bool isXRaySupported() const override { return is64Bit(); }102 Align getPrefFunctionAlignment() const { return PrefFunctionAlignment; }103 Align getPrefLoopAlignment() const { return PrefLoopAlignment; }104 unsigned getMaxBytesForAlignment() const { return MaxBytesForAlignment; }105 unsigned getMaxInterleaveFactor() const { return MaxInterleaveFactor; }106 bool enableMachineScheduler() const override { return true; }107 bool useAA() const override;108};109} // end namespace llvm110 111#endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHSUBTARGET_H112