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 #include <optional> 21 22 namespace llvm { 23 24 class AArch64TargetMachine : public LLVMTargetMachine { 25 protected: 26 std::unique_ptr<TargetLoweringObjectFile> TLOF; 27 mutable StringMap<std::unique_ptr<AArch64Subtarget>> SubtargetMap; 28 29 public: 30 AArch64TargetMachine(const Target &T, const Triple &TT, StringRef CPU, 31 StringRef FS, const TargetOptions &Options, 32 std::optional<Reloc::Model> RM, 33 std::optional<CodeModel::Model> CM, CodeGenOpt::Level OL, 34 bool JIT, bool IsLittleEndian); 35 36 ~AArch64TargetMachine() override; 37 const AArch64Subtarget *getSubtargetImpl(const Function &F) const override; 38 // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget, 39 // subtargets are per-function entities based on the target-specific 40 // attributes of each function. 41 const AArch64Subtarget *getSubtargetImpl() const = delete; 42 43 // Pass Pipeline Configuration 44 TargetPassConfig *createPassConfig(PassManagerBase &PM) override; 45 46 TargetTransformInfo getTargetTransformInfo(const Function &F) const override; 47 48 TargetLoweringObjectFile* getObjFileLowering() const override { 49 return TLOF.get(); 50 } 51 52 MachineFunctionInfo * 53 createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F, 54 const TargetSubtargetInfo *STI) const override; 55 56 yaml::MachineFunctionInfo *createDefaultFuncInfoYAML() const override; 57 yaml::MachineFunctionInfo * 58 convertFuncInfoToYAML(const MachineFunction &MF) const override; 59 bool parseMachineFunctionInfo(const yaml::MachineFunctionInfo &, 60 PerFunctionMIParsingState &PFS, 61 SMDiagnostic &Error, 62 SMRange &SourceRange) const override; 63 64 /// Returns true if a cast between SrcAS and DestAS is a noop. 65 bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override { 66 // Addrspacecasts are always noops. 67 return true; 68 } 69 70 private: 71 bool isLittle; 72 }; 73 74 // AArch64 little endian target machine. 75 // 76 class AArch64leTargetMachine : public AArch64TargetMachine { 77 virtual void anchor(); 78 79 public: 80 AArch64leTargetMachine(const Target &T, const Triple &TT, StringRef CPU, 81 StringRef FS, const TargetOptions &Options, 82 std::optional<Reloc::Model> RM, 83 std::optional<CodeModel::Model> CM, 84 CodeGenOpt::Level OL, bool JIT); 85 }; 86 87 // AArch64 big endian target machine. 88 // 89 class AArch64beTargetMachine : public AArch64TargetMachine { 90 virtual void anchor(); 91 92 public: 93 AArch64beTargetMachine(const Target &T, const Triple &TT, StringRef CPU, 94 StringRef FS, const TargetOptions &Options, 95 std::optional<Reloc::Model> RM, 96 std::optional<CodeModel::Model> CM, 97 CodeGenOpt::Level OL, bool JIT); 98 }; 99 100 } // end namespace llvm 101 102 #endif 103