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[llvm-complete.git] / lib / Target / RISCV / RISCVSubtarget.h
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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.
11 //===----------------------------------------------------------------------===//
13 #ifndef LLVM_LIB_TARGET_RISCV_RISCVSUBTARGET_H
14 #define LLVM_LIB_TARGET_RISCV_RISCVSUBTARGET_H
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"
29 #define GET_SUBTARGETINFO_HEADER
30 #include "RISCVGenSubtargetInfo.inc"
32 namespace llvm {
33 class StringRef;
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 HasRV64 = false;
43 bool IsRV32E = false;
44 bool EnableLinkerRelax = false;
45 bool EnableRVCHintInstrs = false;
46 unsigned XLen = 32;
47 MVT XLenVT = MVT::i32;
48 RISCVABI::ABI TargetABI = RISCVABI::ABI_Unknown;
49 RISCVFrameLowering FrameLowering;
50 RISCVInstrInfo InstrInfo;
51 RISCVRegisterInfo RegInfo;
52 RISCVTargetLowering TLInfo;
53 SelectionDAGTargetInfo TSInfo;
55 /// Initializes using the passed in CPU and feature strings so that we can
56 /// use initializer lists for subtarget initialization.
57 RISCVSubtarget &initializeSubtargetDependencies(const Triple &TT,
58 StringRef CPU, StringRef FS,
59 StringRef ABIName);
61 public:
62 // Initializes the data members to match that of the specified triple.
63 RISCVSubtarget(const Triple &TT, StringRef CPU, StringRef FS,
64 StringRef ABIName, const TargetMachine &TM);
66 // Parses features string setting specified subtarget options. The
67 // definition of this function is auto-generated by tblgen.
68 void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
70 const RISCVFrameLowering *getFrameLowering() const override {
71 return &FrameLowering;
73 const RISCVInstrInfo *getInstrInfo() const override { return &InstrInfo; }
74 const RISCVRegisterInfo *getRegisterInfo() const override {
75 return &RegInfo;
77 const RISCVTargetLowering *getTargetLowering() const override {
78 return &TLInfo;
80 const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
81 return &TSInfo;
83 bool enableMachineScheduler() const override { return true; }
84 bool hasStdExtM() const { return HasStdExtM; }
85 bool hasStdExtA() const { return HasStdExtA; }
86 bool hasStdExtF() const { return HasStdExtF; }
87 bool hasStdExtD() const { return HasStdExtD; }
88 bool hasStdExtC() const { return HasStdExtC; }
89 bool is64Bit() const { return HasRV64; }
90 bool isRV32E() const { return IsRV32E; }
91 bool enableLinkerRelax() const { return EnableLinkerRelax; }
92 bool enableRVCHintInstrs() const { return EnableRVCHintInstrs; }
93 MVT getXLenVT() const { return XLenVT; }
94 unsigned getXLen() const { return XLen; }
95 RISCVABI::ABI getTargetABI() const { return TargetABI; }
97 protected:
98 // GlobalISel related APIs.
99 std::unique_ptr<CallLowering> CallLoweringInfo;
100 std::unique_ptr<InstructionSelector> InstSelector;
101 std::unique_ptr<LegalizerInfo> Legalizer;
102 std::unique_ptr<RegisterBankInfo> RegBankInfo;
104 public:
105 const CallLowering *getCallLowering() const override;
106 InstructionSelector *getInstructionSelector() const override;
107 const LegalizerInfo *getLegalizerInfo() const override;
108 const RegisterBankInfo *getRegBankInfo() const override;
110 } // End llvm namespace
112 #endif