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
21namespace llvm {
22
23class AArch64RegisterBankInfo;
24
25class AArch64TargetMachine : public LLVMTargetMachine {
26protected:
27  std::unique_ptr<TargetLoweringObjectFile> TLOF;
28  mutable StringMap<std::unique_ptr<AArch64Subtarget>> SubtargetMap;
29
30public:
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
52private:
53  bool isLittle;
54};
55
56// AArch64 little endian target machine.
57//
58class AArch64leTargetMachine : public AArch64TargetMachine {
59  virtual void anchor();
60public:
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//
70class AArch64beTargetMachine : public AArch64TargetMachine {
71  virtual void anchor();
72public:
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
83