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