1 //===-- SparcSubtarget.h - Define Subtarget for the SPARC -------*- 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 SPARC specific subclass of TargetSubtargetInfo. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H 14 #define LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H 15 16 #include "MCTargetDesc/SparcMCTargetDesc.h" 17 #include "SparcFrameLowering.h" 18 #include "SparcISelLowering.h" 19 #include "SparcInstrInfo.h" 20 #include "llvm/CodeGen/TargetSubtargetInfo.h" 21 #include "llvm/IR/DataLayout.h" 22 #include "llvm/Support/ErrorHandling.h" 23 #include "llvm/TargetParser/Triple.h" 24 #include <string> 25 26 #define GET_SUBTARGETINFO_HEADER 27 #include "SparcGenSubtargetInfo.inc" 28 29 namespace llvm { 30 class StringRef; 31 32 class SparcSubtarget : public SparcGenSubtargetInfo { 33 // ReserveRegister[i] - Register #i is not available as a general purpose 34 // register. 35 BitVector ReserveRegister; 36 37 Triple TargetTriple; 38 virtual void anchor(); 39 40 bool Is64Bit; 41 42 #define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER) \ 43 bool ATTRIBUTE = DEFAULT; 44 #include "SparcGenSubtargetInfo.inc" 45 46 SparcInstrInfo InstrInfo; 47 SparcTargetLowering TLInfo; 48 std::unique_ptr<const SelectionDAGTargetInfo> TSInfo; 49 SparcFrameLowering FrameLowering; 50 51 public: 52 SparcSubtarget(const StringRef &CPU, const StringRef &TuneCPU, 53 const StringRef &FS, const TargetMachine &TM, bool is64bit); 54 55 ~SparcSubtarget() override; 56 getInstrInfo()57 const SparcInstrInfo *getInstrInfo() const override { return &InstrInfo; } getFrameLowering()58 const TargetFrameLowering *getFrameLowering() const override { 59 return &FrameLowering; 60 } getRegisterInfo()61 const SparcRegisterInfo *getRegisterInfo() const override { 62 return &InstrInfo.getRegisterInfo(); 63 } getTargetLowering()64 const SparcTargetLowering *getTargetLowering() const override { 65 return &TLInfo; 66 } 67 68 const SelectionDAGTargetInfo *getSelectionDAGInfo() const override; 69 70 bool enableMachineScheduler() const override; 71 72 #define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER) \ 73 bool GETTER() const { return ATTRIBUTE; } 74 #include "SparcGenSubtargetInfo.inc" 75 76 /// ParseSubtargetFeatures - Parses features string setting specified 77 /// subtarget options. Definition of function is auto generated by tblgen. 78 void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS); 79 SparcSubtarget &initializeSubtargetDependencies(StringRef CPU, 80 StringRef TuneCPU, 81 StringRef FS); 82 is64Bit()83 bool is64Bit() const { return Is64Bit; } 84 85 /// The 64-bit ABI uses biased stack and frame pointers, so the stack frame 86 /// of the current function is the area from [%sp+BIAS] to [%fp+BIAS]. getStackPointerBias()87 int64_t getStackPointerBias() const { 88 return is64Bit() ? 2047 : 0; 89 } 90 isRegisterReserved(MCPhysReg PhysReg)91 bool isRegisterReserved(MCPhysReg PhysReg) const { 92 return ReserveRegister[PhysReg]; 93 } 94 95 /// Given a actual stack size as determined by FrameInfo, this function 96 /// returns adjusted framesize which includes space for register window 97 /// spills and arguments. 98 int getAdjustedFrameSize(int stackSize) const; 99 isTargetLinux()100 bool isTargetLinux() const { return TargetTriple.isOSLinux(); } 101 }; 102 103 } // end namespace llvm 104 105 #endif 106