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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file declares the LoongArch specific subclass of TargetSubtargetInfo. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_LOONGARCH_LOONGARCHSUBTARGET_H 14 #define LLVM_LIB_TARGET_LOONGARCH_LOONGARCHSUBTARGET_H 15 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/SelectionDAGTargetInfo.h" 22 #include "llvm/CodeGen/TargetSubtargetInfo.h" 23 #include "llvm/IR/DataLayout.h" 24 #include "llvm/Target/TargetMachine.h" 25 26 #define GET_SUBTARGETINFO_HEADER 27 #include "LoongArchGenSubtargetInfo.inc" 28 29 namespace llvm { 30 class StringRef; 31 32 class LoongArchSubtarget : public LoongArchGenSubtargetInfo { 33 virtual void anchor(); 34 35 #define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER) \ 36 bool ATTRIBUTE = DEFAULT; 37 #include "LoongArchGenSubtargetInfo.inc" 38 39 unsigned GRLen = 32; 40 // TODO: The default value is empirical and conservative. Override the 41 // default in initializeProperties once we support optimizing for more 42 // uarches. 43 uint8_t MaxInterleaveFactor = 2; 44 MVT GRLenVT = MVT::i32; 45 LoongArchABI::ABI TargetABI = LoongArchABI::ABI_Unknown; 46 LoongArchFrameLowering FrameLowering; 47 LoongArchInstrInfo InstrInfo; 48 LoongArchRegisterInfo RegInfo; 49 LoongArchTargetLowering TLInfo; 50 SelectionDAGTargetInfo TSInfo; 51 52 Align PrefFunctionAlignment; 53 Align PrefLoopAlignment; 54 unsigned MaxBytesForAlignment; 55 56 /// Initializes using the passed in CPU and feature strings so that we can 57 /// use initializer lists for subtarget initialization. 58 LoongArchSubtarget &initializeSubtargetDependencies(const Triple &TT, 59 StringRef CPU, 60 StringRef TuneCPU, 61 StringRef FS, 62 StringRef ABIName); 63 64 /// Initialize properties based on the selected processor family. 65 void initializeProperties(StringRef TuneCPU); 66 67 public: 68 // Initializes the data members to match that of the specified triple. 69 LoongArchSubtarget(const Triple &TT, StringRef CPU, StringRef TuneCPU, 70 StringRef FS, StringRef ABIName, const TargetMachine &TM); 71 72 // Parses features string setting specified subtarget options. The 73 // definition of this function is auto-generated by tblgen. 74 void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS); 75 getFrameLowering()76 const LoongArchFrameLowering *getFrameLowering() const override { 77 return &FrameLowering; 78 } getInstrInfo()79 const LoongArchInstrInfo *getInstrInfo() const override { return &InstrInfo; } getRegisterInfo()80 const LoongArchRegisterInfo *getRegisterInfo() const override { 81 return &RegInfo; 82 } getTargetLowering()83 const LoongArchTargetLowering *getTargetLowering() const override { 84 return &TLInfo; 85 } getSelectionDAGInfo()86 const SelectionDAGTargetInfo *getSelectionDAGInfo() const override { 87 return &TSInfo; 88 } 89 90 #define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER) \ 91 bool GETTER() const { return ATTRIBUTE; } 92 #include "LoongArchGenSubtargetInfo.inc" 93 is64Bit()94 bool is64Bit() const { return HasLA64; } getGRLenVT()95 MVT getGRLenVT() const { return GRLenVT; } getGRLen()96 unsigned getGRLen() const { return GRLen; } getTargetABI()97 LoongArchABI::ABI getTargetABI() const { return TargetABI; } isSoftFPABI()98 bool isSoftFPABI() const { 99 return TargetABI == LoongArchABI::ABI_LP64S || 100 TargetABI == LoongArchABI::ABI_ILP32S; 101 } isXRaySupported()102 bool isXRaySupported() const override { return is64Bit(); } getPrefFunctionAlignment()103 Align getPrefFunctionAlignment() const { return PrefFunctionAlignment; } getPrefLoopAlignment()104 Align getPrefLoopAlignment() const { return PrefLoopAlignment; } getMaxBytesForAlignment()105 unsigned getMaxBytesForAlignment() const { return MaxBytesForAlignment; } getMaxInterleaveFactor()106 unsigned getMaxInterleaveFactor() const { return MaxInterleaveFactor; } enableMachineScheduler()107 bool enableMachineScheduler() const override { return true; } 108 }; 109 } // end namespace llvm 110 111 #endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHSUBTARGET_H 112