lib/Target/AArch64/AArch64TargetMachine.h

   1 //==-- AArch64TargetMachine.h - Define TargetMachine for AArch64 -*- C++ -*-==//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file declares the AArch64 specific subclass of TargetMachine.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_LIB_TARGET_AARCH64_AARCH64TARGETMACHINE_H
  15 #define LLVM_LIB_TARGET_AARCH64_AARCH64TARGETMACHINE_H
  16
  17 #include "AArch64InstrInfo.h"
  18 #include "AArch64Subtarget.h"
  19 #include "llvm/IR/DataLayout.h"
  20 #include "llvm/Target/TargetMachine.h"
  21
  22 namespace llvm {
  23
  24 class AArch64RegisterBankInfo;
  25
  26 class AArch64TargetMachine : public LLVMTargetMachine {
  27 protected:
  28   std::unique_ptr<TargetLoweringObjectFile> TLOF;
  29   mutable StringMap<std::unique_ptr<AArch64Subtarget>> SubtargetMap;
  30
  31 public:
  32   AArch64TargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  33                        StringRef FS, const TargetOptions &Options,
  34                        Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
  35                        CodeGenOpt::Level OL, bool JIT, bool IsLittleEndian);
  36
  37   ~AArch64TargetMachine() override;
  38   const AArch64Subtarget *getSubtargetImpl(const Function &F) const override;
  39   // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget,
  40   // subtargets are per-function entities based on the target-specific
  41   // attributes of each function.
  42   const AArch64Subtarget *getSubtargetImpl() const = delete;
  43
  44   // Pass Pipeline Configuration
  45   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
  46
  47   TargetTransformInfo getTargetTransformInfo(const Function &F) override;
  48
  49   TargetLoweringObjectFile* getObjFileLowering() const override {
  50     return TLOF.get();
  51   }
  52
  53 private:
  54   bool isLittle;
  55 };
  56
  57 // AArch64 little endian target machine.
  58 //
  59 class AArch64leTargetMachine : public AArch64TargetMachine {
  60   virtual void anchor();
  61 public:
  62   AArch64leTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  63                          StringRef FS, const TargetOptions &Options,
  64                          Optional<Reloc::Model> RM,
  65                          Optional<CodeModel::Model> CM, CodeGenOpt::Level OL,
  66                          bool JIT);
  67 };
  68
  69 // AArch64 big endian target machine.
  70 //
  71 class AArch64beTargetMachine : public AArch64TargetMachine {
  72   virtual void anchor();
  73 public:
  74   AArch64beTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  75                          StringRef FS, const TargetOptions &Options,
  76                          Optional<Reloc::Model> RM,
  77                          Optional<CodeModel::Model> CM, CodeGenOpt::Level OL,
  78                          bool JIT);
  79 };
  80
  81 } // end namespace llvm
  82
  83 #endif