1 //===-- RISCVSubtarget.h - Define Subtarget for the RISCV -------*- 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 // 9 // This file declares the RISCV specific subclass of TargetSubtargetInfo. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_RISCV_RISCVSUBTARGET_H 14 #define LLVM_LIB_TARGET_RISCV_RISCVSUBTARGET_H 15 16 #include "RISCVFrameLowering.h" 17 #include "RISCVISelLowering.h" 18 #include "RISCVInstrInfo.h" 19 #include "Utils/RISCVBaseInfo.h" 20 #include "llvm/CodeGen/GlobalISel/CallLowering.h" 21 #include "llvm/CodeGen/GlobalISel/InstructionSelector.h" 22 #include "llvm/CodeGen/GlobalISel/LegalizerInfo.h" 23 #include "llvm/CodeGen/GlobalISel/RegisterBankInfo.h" 24 #include "llvm/CodeGen/SelectionDAGTargetInfo.h" 25 #include "llvm/CodeGen/TargetSubtargetInfo.h" 26 #include "llvm/IR/DataLayout.h" 27 #include "llvm/Target/TargetMachine.h" 28 29 #define GET_SUBTARGETINFO_HEADER 30 #include "RISCVGenSubtargetInfo.inc" 31 32 namespace llvm { 33 class StringRef; 34 35 class RISCVSubtarget : public RISCVGenSubtargetInfo { 36 virtual void anchor(); 37 bool HasStdExtM = false; 38 bool HasStdExtA = false; 39 bool HasStdExtF = false; 40 bool HasStdExtD = false; 41 bool HasStdExtC = false; 42 bool HasStdExtB = false; 43 bool HasStdExtZbb = false; 44 bool HasStdExtZbc = false; 45 bool HasStdExtZbe = false; 46 bool HasStdExtZbf = false; 47 bool HasStdExtZbm = false; 48 bool HasStdExtZbp = false; 49 bool HasStdExtZbr = false; 50 bool HasStdExtZbs = false; 51 bool HasStdExtZbt = false; 52 bool HasStdExtZbproposedc = false; 53 bool HasStdExtV = false; 54 bool HasStdExtZvlsseg = false; 55 bool HasStdExtZvamo = false; 56 bool HasRV64 = false; 57 bool IsRV32E = false; 58 bool EnableLinkerRelax = false; 59 bool EnableRVCHintInstrs = true; 60 bool EnableSaveRestore = false; 61 unsigned XLen = 32; 62 MVT XLenVT = MVT::i32; 63 RISCVABI::ABI TargetABI = RISCVABI::ABI_Unknown; 64 BitVector UserReservedRegister; 65 RISCVFrameLowering FrameLowering; 66 RISCVInstrInfo InstrInfo; 67 RISCVRegisterInfo RegInfo; 68 RISCVTargetLowering TLInfo; 69 SelectionDAGTargetInfo TSInfo; 70 71 /// Initializes using the passed in CPU and feature strings so that we can 72 /// use initializer lists for subtarget initialization. 73 RISCVSubtarget &initializeSubtargetDependencies(const Triple &TT, 74 StringRef CPU, 75 StringRef TuneCPU, 76 StringRef FS, 77 StringRef ABIName); 78 79 public: 80 // Initializes the data members to match that of the specified triple. 81 RISCVSubtarget(const Triple &TT, StringRef CPU, StringRef TuneCPU, 82 StringRef FS, StringRef ABIName, const TargetMachine &TM); 83 84 // Parses features string setting specified subtarget options. The 85 // definition of this function is auto-generated by tblgen. 86 void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS); 87 getFrameLowering()88 const RISCVFrameLowering *getFrameLowering() const override { 89 return &FrameLowering; 90 } getInstrInfo()91 const RISCVInstrInfo *getInstrInfo() const override { return &InstrInfo; } getRegisterInfo()92 const RISCVRegisterInfo *getRegisterInfo() const override { 93 return &RegInfo; 94 } getTargetLowering()95 const RISCVTargetLowering *getTargetLowering() const override { 96 return &TLInfo; 97 } getSelectionDAGInfo()98 const SelectionDAGTargetInfo *getSelectionDAGInfo() const override { 99 return &TSInfo; 100 } enableMachineScheduler()101 bool enableMachineScheduler() const override { return true; } hasStdExtM()102 bool hasStdExtM() const { return HasStdExtM; } hasStdExtA()103 bool hasStdExtA() const { return HasStdExtA; } hasStdExtF()104 bool hasStdExtF() const { return HasStdExtF; } hasStdExtD()105 bool hasStdExtD() const { return HasStdExtD; } hasStdExtC()106 bool hasStdExtC() const { return HasStdExtC; } hasStdExtB()107 bool hasStdExtB() const { return HasStdExtB; } hasStdExtZbb()108 bool hasStdExtZbb() const { return HasStdExtZbb; } hasStdExtZbc()109 bool hasStdExtZbc() const { return HasStdExtZbc; } hasStdExtZbe()110 bool hasStdExtZbe() const { return HasStdExtZbe; } hasStdExtZbf()111 bool hasStdExtZbf() const { return HasStdExtZbf; } hasStdExtZbm()112 bool hasStdExtZbm() const { return HasStdExtZbm; } hasStdExtZbp()113 bool hasStdExtZbp() const { return HasStdExtZbp; } hasStdExtZbr()114 bool hasStdExtZbr() const { return HasStdExtZbr; } hasStdExtZbs()115 bool hasStdExtZbs() const { return HasStdExtZbs; } hasStdExtZbt()116 bool hasStdExtZbt() const { return HasStdExtZbt; } hasStdExtZbproposedc()117 bool hasStdExtZbproposedc() const { return HasStdExtZbproposedc; } hasStdExtV()118 bool hasStdExtV() const { return HasStdExtV; } hasStdExtZvlsseg()119 bool hasStdExtZvlsseg() const { return HasStdExtZvlsseg; } hasStdExtZvamo()120 bool hasStdExtZvamo() const { return HasStdExtZvamo; } is64Bit()121 bool is64Bit() const { return HasRV64; } isRV32E()122 bool isRV32E() const { return IsRV32E; } enableLinkerRelax()123 bool enableLinkerRelax() const { return EnableLinkerRelax; } enableRVCHintInstrs()124 bool enableRVCHintInstrs() const { return EnableRVCHintInstrs; } enableSaveRestore()125 bool enableSaveRestore() const { return EnableSaveRestore; } getXLenVT()126 MVT getXLenVT() const { return XLenVT; } getXLen()127 unsigned getXLen() const { return XLen; } getTargetABI()128 RISCVABI::ABI getTargetABI() const { return TargetABI; } isRegisterReservedByUser(Register i)129 bool isRegisterReservedByUser(Register i) const { 130 assert(i < RISCV::NUM_TARGET_REGS && "Register out of range"); 131 return UserReservedRegister[i]; 132 } 133 134 protected: 135 // GlobalISel related APIs. 136 std::unique_ptr<CallLowering> CallLoweringInfo; 137 std::unique_ptr<InstructionSelector> InstSelector; 138 std::unique_ptr<LegalizerInfo> Legalizer; 139 std::unique_ptr<RegisterBankInfo> RegBankInfo; 140 141 public: 142 const CallLowering *getCallLowering() const override; 143 InstructionSelector *getInstructionSelector() const override; 144 const LegalizerInfo *getLegalizerInfo() const override; 145 const RegisterBankInfo *getRegBankInfo() const override; 146 }; 147 } // End llvm namespace 148 149 #endif 150