1//===- MipsTargetMachine.h - Define TargetMachine for Mips ------*- 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 Mips specific subclass of TargetMachine.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
14#define LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
15
16#include "MCTargetDesc/MipsABIInfo.h"
17#include "MipsSubtarget.h"
18#include "llvm/ADT/Optional.h"
19#include "llvm/ADT/StringMap.h"
20#include "llvm/ADT/StringRef.h"
21#include "llvm/Support/CodeGen.h"
22#include "llvm/Target/TargetMachine.h"
23#include <memory>
24
25namespace llvm {
26
27class MipsTargetMachine : public LLVMTargetMachine {
28  bool isLittle;
29  std::unique_ptr<TargetLoweringObjectFile> TLOF;
30  // Selected ABI
31  MipsABIInfo ABI;
32  const MipsSubtarget *Subtarget;
33  MipsSubtarget DefaultSubtarget;
34  MipsSubtarget NoMips16Subtarget;
35  MipsSubtarget Mips16Subtarget;
36
37  mutable StringMap<std::unique_ptr<MipsSubtarget>> SubtargetMap;
38
39public:
40  MipsTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
41                    StringRef FS, const TargetOptions &Options,
42                    Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
43                    CodeGenOpt::Level OL, bool JIT, bool isLittle);
44  ~MipsTargetMachine() override;
45
46  TargetTransformInfo getTargetTransformInfo(const Function &F) override;
47
48  const MipsSubtarget *getSubtargetImpl() const {
49    if (Subtarget)
50      return Subtarget;
51    return &DefaultSubtarget;
52  }
53
54  const MipsSubtarget *getSubtargetImpl(const Function &F) const override;
55
56  /// Reset the subtarget for the Mips target.
57  void resetSubtarget(MachineFunction *MF);
58
59  // Pass Pipeline Configuration
60  TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
61
62  TargetLoweringObjectFile *getObjFileLowering() const override {
63    return TLOF.get();
64  }
65
66  bool isLittleEndian() const { return isLittle; }
67  const MipsABIInfo &getABI() const { return ABI; }
68};
69
70/// Mips32/64 big endian target machine.
71///
72class MipsebTargetMachine : public MipsTargetMachine {
73  virtual void anchor();
74
75public:
76  MipsebTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
77                      StringRef FS, const TargetOptions &Options,
78                      Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
79                      CodeGenOpt::Level OL, bool JIT);
80};
81
82/// Mips32/64 little endian target machine.
83///
84class MipselTargetMachine : public MipsTargetMachine {
85  virtual void anchor();
86
87public:
88  MipselTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
89                      StringRef FS, const TargetOptions &Options,
90                      Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
91                      CodeGenOpt::Level OL, bool JIT);
92};
93
94} // end namespace llvm
95
96#endif // LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
97