lib/Target/AArch64/AArch64TargetMachine.h

   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 AArch64RegisterBankInfo;
  24
  25 class AArch64TargetMachine : public LLVMTargetMachine {
  26 protected:
  27   std::unique_ptr<TargetLoweringObjectFile> TLOF;
  28   mutable StringMap<std::unique_ptr<AArch64Subtarget>> SubtargetMap;
  29
  30 public:
  31   AArch64TargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  32                        StringRef FS, const TargetOptions &Options,
  33                        Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
  34                        CodeGenOpt::Level OL, 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) override;
  47
  48   TargetLoweringObjectFile* getObjFileLowering() const override {
  49     return TLOF.get();
  50   }
  51
  52 private:
  53   bool isLittle;
  54 };
  55
  56 // AArch64 little endian target machine.
  57 //
  58 class AArch64leTargetMachine : public AArch64TargetMachine {
  59   virtual void anchor();
  60 public:
  61   AArch64leTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  62                          StringRef FS, const TargetOptions &Options,
  63                          Optional<Reloc::Model> RM,
  64                          Optional<CodeModel::Model> CM, CodeGenOpt::Level OL,
  65                          bool JIT);
  66 };
  67
  68 // AArch64 big endian target machine.
  69 //
  70 class AArch64beTargetMachine : public AArch64TargetMachine {
  71   virtual void anchor();
  72 public:
  73   AArch64beTargetMachine(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 } // end namespace llvm
  81
  82 #endif