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