1 //===-- Nios2Subtarget.h - Define Subtarget for the Nios2 -------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file declares the Nios2 specific subclass of TargetSubtargetInfo. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_TARGET_NIOS2_NIOS2SUBTARGET_H 15 #define LLVM_LIB_TARGET_NIOS2_NIOS2SUBTARGET_H 16 17 #include "Nios2FrameLowering.h" 18 #include "Nios2ISelLowering.h" 19 #include "Nios2InstrInfo.h" 20 #include "llvm/CodeGen/SelectionDAGTargetInfo.h" 21 #include "llvm/CodeGen/TargetFrameLowering.h" 22 #include "llvm/CodeGen/TargetSubtargetInfo.h" 23 24 #define GET_SUBTARGETINFO_HEADER 25 #include "Nios2GenSubtargetInfo.inc" 26 27 namespace llvm { 28 class StringRef; 29 30 class Nios2TargetMachine; 31 32 class Nios2Subtarget : public Nios2GenSubtargetInfo { 33 virtual void anchor(); 34 35 public: 36 // Nios2 R2 features 37 // Bit manipulation instructions extension 38 bool HasBMX; 39 // Code Density instructions extension 40 bool HasCDX; 41 // Multi-Processor instructions extension 42 bool HasMPX; 43 // New mandatory instructions 44 bool HasR2Mandatory; 45 46 protected: 47 enum Nios2ArchEnum { 48 // Nios2 R1 ISA 49 Nios2r1, 50 // Nios2 R2 ISA 51 Nios2r2 52 }; 53 54 // Nios2 architecture version 55 Nios2ArchEnum Nios2ArchVersion; 56 57 Triple TargetTriple; 58 59 Nios2InstrInfo InstrInfo; 60 Nios2TargetLowering TLInfo; 61 SelectionDAGTargetInfo TSInfo; 62 Nios2FrameLowering FrameLowering; 63 64 public: 65 /// This constructor initializes the data members to match that 66 /// of the specified triple. 67 Nios2Subtarget(const Triple &TT, const std::string &CPU, 68 const std::string &FS, const TargetMachine &TM); 69 70 /// ParseSubtargetFeatures - Parses features string setting specified 71 /// subtarget options. Definition of function is auto generated by tblgen. 72 void ParseSubtargetFeatures(StringRef CPU, StringRef FS); 73 hasNios2r1()74 bool hasNios2r1() const { return Nios2ArchVersion >= Nios2r1; } isNios2r1()75 bool isNios2r1() const { return Nios2ArchVersion == Nios2r1; } hasNios2r2()76 bool hasNios2r2() const { return Nios2ArchVersion >= Nios2r2; } isNios2r2()77 bool isNios2r2() const { return Nios2ArchVersion == Nios2r2; } 78 79 Nios2Subtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS); 80 getInstrInfo()81 const Nios2InstrInfo *getInstrInfo() const override { return &InstrInfo; } getFrameLowering()82 const TargetFrameLowering *getFrameLowering() const override { 83 return &FrameLowering; 84 } getRegisterInfo()85 const Nios2RegisterInfo *getRegisterInfo() const override { 86 return &InstrInfo.getRegisterInfo(); 87 } getTargetLowering()88 const Nios2TargetLowering *getTargetLowering() const override { 89 return &TLInfo; 90 } getSelectionDAGInfo()91 const SelectionDAGTargetInfo *getSelectionDAGInfo() const override { 92 return &TSInfo; 93 } 94 }; 95 } // namespace llvm 96 97 #endif 98