1 //==-- AArch64TargetMachine.h - Define TargetMachine for AArch64 -*- 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 AArch64 specific subclass of TargetMachine. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_AARCH64_AARCH64TARGETMACHINE_H 14 #define LLVM_LIB_TARGET_AARCH64_AARCH64TARGETMACHINE_H 15 16 #include "AArch64InstrInfo.h" 17 #include "AArch64Subtarget.h" 18 #include "llvm/IR/DataLayout.h" 19 #include "llvm/Target/TargetMachine.h" 20 21 namespace llvm { 22 23 class AArch64TargetMachine : public LLVMTargetMachine { 24 protected: 25 std::unique_ptr<TargetLoweringObjectFile> TLOF; 26 mutable StringMap<std::unique_ptr<AArch64Subtarget>> SubtargetMap; 27 28 public: 29 AArch64TargetMachine(const Target &T, const Triple &TT, StringRef CPU, 30 StringRef FS, const TargetOptions &Options, 31 Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM, 32 CodeGenOpt::Level OL, bool JIT, bool IsLittleEndian); 33 34 ~AArch64TargetMachine() override; 35 const AArch64Subtarget *getSubtargetImpl(const Function &F) const override; 36 // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget, 37 // subtargets are per-function entities based on the target-specific 38 // attributes of each function. 39 const AArch64Subtarget *getSubtargetImpl() const = delete; 40 41 // Pass Pipeline Configuration 42 TargetPassConfig *createPassConfig(PassManagerBase &PM) override; 43 44 TargetTransformInfo getTargetTransformInfo(const Function &F) const override; 45 46 TargetLoweringObjectFile* getObjFileLowering() const override { 47 return TLOF.get(); 48 } 49 50 yaml::MachineFunctionInfo *createDefaultFuncInfoYAML() const override; 51 yaml::MachineFunctionInfo * 52 convertFuncInfoToYAML(const MachineFunction &MF) const override; 53 bool parseMachineFunctionInfo(const yaml::MachineFunctionInfo &, 54 PerFunctionMIParsingState &PFS, 55 SMDiagnostic &Error, 56 SMRange &SourceRange) const override; 57 58 /// Returns true if a cast between SrcAS and DestAS is a noop. 59 bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override { 60 // Addrspacecasts are always noops. 61 return true; 62 } 63 64 private: 65 bool isLittle; 66 }; 67 68 // AArch64 little endian target machine. 69 // 70 class AArch64leTargetMachine : public AArch64TargetMachine { 71 virtual void anchor(); 72 public: 73 AArch64leTargetMachine(const Target &T, const Triple &TT, StringRef CPU, 74 StringRef FS, const TargetOptions &Options, 75 Optional<Reloc::Model> RM, 76 Optional<CodeModel::Model> CM, CodeGenOpt::Level OL, 77 bool JIT); 78 }; 79 80 // AArch64 big endian target machine. 81 // 82 class AArch64beTargetMachine : public AArch64TargetMachine { 83 virtual void anchor(); 84 public: 85 AArch64beTargetMachine(const Target &T, const Triple &TT, StringRef CPU, 86 StringRef FS, const TargetOptions &Options, 87 Optional<Reloc::Model> RM, 88 Optional<CodeModel::Model> CM, CodeGenOpt::Level OL, 89 bool JIT); 90 }; 91 92 } // end namespace llvm 93 94 #endif 95