lib/Target/Mips/MipsTargetMachine.h

   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/ADT/Optional.h"
  20 #include "llvm/ADT/StringMap.h"
  21 #include "llvm/ADT/StringRef.h"
  22 #include "llvm/Support/CodeGen.h"
  23 #include "llvm/Target/TargetMachine.h"
  24 #include <memory>
  25
  26 namespace llvm {
  27
  28 class MipsTargetMachine : public LLVMTargetMachine {
  29   bool isLittle;
  30   std::unique_ptr<TargetLoweringObjectFile> TLOF;
  31   // Selected ABI
  32   MipsABIInfo ABI;
  33   MipsSubtarget *Subtarget;
  34   MipsSubtarget DefaultSubtarget;
  35   MipsSubtarget NoMips16Subtarget;
  36   MipsSubtarget Mips16Subtarget;
  37
  38   mutable StringMap<std::unique_ptr<MipsSubtarget>> SubtargetMap;
  39
  40 public:
  41   MipsTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  42                     StringRef FS, const TargetOptions &Options,
  43                     Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
  44                     CodeGenOpt::Level OL, bool JIT, bool isLittle);
  45   ~MipsTargetMachine() override;
  46
  47   TargetTransformInfo getTargetTransformInfo(const Function &F) override;
  48
  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   /// Reset the subtarget for the Mips target.
  58   void resetSubtarget(MachineFunction *MF);
  59
  60   // Pass Pipeline Configuration
  61   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
  62
  63   TargetLoweringObjectFile *getObjFileLowering() const override {
  64     return TLOF.get();
  65   }
  66
  67   bool isLittleEndian() const { return isLittle; }
  68   const MipsABIInfo &getABI() const { return ABI; }
  69
  70   bool isMachineVerifierClean() const override {
  71     return false;
  72   }
  73 };
  74
  75 /// Mips32/64 big endian target machine.
  76 ///
  77 class MipsebTargetMachine : public MipsTargetMachine {
  78   virtual void anchor();
  79
  80 public:
  81   MipsebTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  82                       StringRef FS, const TargetOptions &Options,
  83                       Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
  84                       CodeGenOpt::Level OL, bool JIT);
  85 };
  86
  87 /// Mips32/64 little endian target machine.
  88 ///
  89 class MipselTargetMachine : public MipsTargetMachine {
  90   virtual void anchor();
  91
  92 public:
  93   MipselTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  94                       StringRef FS, const TargetOptions &Options,
  95                       Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
  96                       CodeGenOpt::Level OL, bool JIT);
  97 };
  98
  99 } // end namespace llvm
 100
 101 #endif // LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H