//===--- AArch64Subtarget.h - Define Subtarget for the AArch64 -*- C++ -*--===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file declares the AArch64 specific subclass of TargetSubtarget. // //===----------------------------------------------------------------------===// #ifndef AArch64SUBTARGET_H #define AArch64SUBTARGET_H #include "AArch64InstrInfo.h" #include "AArch64FrameLowering.h" #include "AArch64ISelLowering.h" #include "AArch64RegisterInfo.h" #include "AArch64SelectionDAGInfo.h" #include "llvm/IR/DataLayout.h" #include "llvm/Target/TargetSubtargetInfo.h" #include <string> #define GET_SUBTARGETINFO_HEADER #include "AArch64GenSubtargetInfo.inc" namespace llvm { class GlobalValue; class StringRef; class AArch64Subtarget : public AArch64GenSubtargetInfo { protected: enum ARMProcFamilyEnum {Others, CortexA53, CortexA57, Cyclone}; /// ARMProcFamily - ARM processor family: Cortex-A53, Cortex-A57, and others. ARMProcFamilyEnum ARMProcFamily; bool HasFPARMv8; bool HasNEON; bool HasCrypto; bool HasCRC; // HasZeroCycleRegMove - Has zero-cycle register mov instructions. bool HasZeroCycleRegMove; // HasZeroCycleZeroing - Has zero-cycle zeroing instructions. bool HasZeroCycleZeroing; /// CPUString - String name of used CPU. std::string CPUString; /// TargetTriple - What processor and OS we're targeting. Triple TargetTriple; const DataLayout DL; AArch64FrameLowering FrameLowering; AArch64InstrInfo InstrInfo; AArch64SelectionDAGInfo TSInfo; AArch64TargetLowering TLInfo; private: /// initializeSubtargetDependencies - Initializes using CPUString and the /// passed in feature string so that we can use initializer lists for /// subtarget initialization. AArch64Subtarget &initializeSubtargetDependencies(StringRef FS); public: /// This constructor initializes the data members to match that /// of the specified triple. AArch64Subtarget(const std::string &TT, const std::string &CPU, const std::string &FS, TargetMachine &TM, bool LittleEndian); const AArch64SelectionDAGInfo *getSelectionDAGInfo() const { return &TSInfo; } const AArch64FrameLowering *getFrameLowering() const { return &FrameLowering; } const AArch64TargetLowering *getTargetLowering() const { return &TLInfo; } const AArch64InstrInfo *getInstrInfo() const { return &InstrInfo; } const DataLayout *getDataLayout() const { return &DL; } bool enableMachineScheduler() const override { return true; } bool hasZeroCycleRegMove() const { return HasZeroCycleRegMove; } bool hasZeroCycleZeroing() const { return HasZeroCycleZeroing; } bool hasFPARMv8() const { return HasFPARMv8; } bool hasNEON() const { return HasNEON; } bool hasCrypto() const { return HasCrypto; } bool hasCRC() const { return HasCRC; } bool isLittleEndian() const { return DL.isLittleEndian(); } bool isTargetDarwin() const { return TargetTriple.isOSDarwin(); } bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); } bool isTargetMachO() const { return TargetTriple.isOSBinFormatMachO(); } bool isCyclone() const { return CPUString == "cyclone"; } bool isCortexA57() const { return CPUString == "cortex-a57"; } bool isCortexA53() const { return CPUString == "cortex-a53"; } /// getMaxInlineSizeThreshold - Returns the maximum memset / memcpy size /// that still makes it profitable to inline the call. unsigned getMaxInlineSizeThreshold() const { return 64; } /// ParseSubtargetFeatures - Parses features string setting specified /// subtarget options. Definition of function is auto generated by tblgen. void ParseSubtargetFeatures(StringRef CPU, StringRef FS); /// ClassifyGlobalReference - Find the target operand flags that describe /// how a global value should be referenced for the current subtarget. unsigned char ClassifyGlobalReference(const GlobalValue *GV, const TargetMachine &TM) const; /// This function returns the name of a function which has an interface /// like the non-standard bzero function, if such a function exists on /// the current subtarget and it is considered prefereable over /// memset with zero passed as the second argument. Otherwise it /// returns null. const char *getBZeroEntry() const; void overrideSchedPolicy(MachineSchedPolicy &Policy, MachineInstr *begin, MachineInstr *end, unsigned NumRegionInstrs) const override; bool enableEarlyIfConversion() const override; }; } // End llvm namespace #endif // AArch64SUBTARGET_H