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      1 //===-- X86TargetMachine.h - Define TargetMachine for the X86 ---*- 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 X86 specific subclass of TargetMachine.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #ifndef X86TARGETMACHINE_H
     15 #define X86TARGETMACHINE_H
     16 
     17 #include "X86.h"
     18 #include "X86ELFWriterInfo.h"
     19 #include "X86InstrInfo.h"
     20 #include "X86ISelLowering.h"
     21 #include "X86FrameLowering.h"
     22 #include "X86JITInfo.h"
     23 #include "X86SelectionDAGInfo.h"
     24 #include "X86Subtarget.h"
     25 #include "llvm/Target/TargetMachine.h"
     26 #include "llvm/Target/TargetData.h"
     27 #include "llvm/Target/TargetFrameLowering.h"
     28 
     29 namespace llvm {
     30 
     31 class formatted_raw_ostream;
     32 class StringRef;
     33 
     34 class X86TargetMachine : public LLVMTargetMachine {
     35   X86Subtarget      Subtarget;
     36   X86FrameLowering  FrameLowering;
     37   X86ELFWriterInfo  ELFWriterInfo;
     38 
     39 public:
     40   X86TargetMachine(const Target &T, StringRef TT,
     41                    StringRef CPU, StringRef FS,
     42                    Reloc::Model RM, CodeModel::Model CM,
     43                    bool is64Bit);
     44 
     45   virtual const X86InstrInfo     *getInstrInfo() const {
     46     llvm_unreachable("getInstrInfo not implemented");
     47   }
     48   virtual const TargetFrameLowering  *getFrameLowering() const {
     49     return &FrameLowering;
     50   }
     51   virtual       X86JITInfo       *getJITInfo()         {
     52     llvm_unreachable("getJITInfo not implemented");
     53   }
     54   virtual const X86Subtarget     *getSubtargetImpl() const{ return &Subtarget; }
     55   virtual const X86TargetLowering *getTargetLowering() const {
     56     llvm_unreachable("getTargetLowering not implemented");
     57   }
     58   virtual const X86SelectionDAGInfo *getSelectionDAGInfo() const {
     59     llvm_unreachable("getSelectionDAGInfo not implemented");
     60   }
     61   virtual const X86RegisterInfo  *getRegisterInfo() const {
     62     return &getInstrInfo()->getRegisterInfo();
     63   }
     64   virtual const X86ELFWriterInfo *getELFWriterInfo() const {
     65     return Subtarget.isTargetELF() ? &ELFWriterInfo : 0;
     66   }
     67 
     68   // Set up the pass pipeline.
     69   virtual bool addInstSelector(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
     70   virtual bool addPreRegAlloc(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
     71   virtual bool addPostRegAlloc(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
     72   virtual bool addPreEmitPass(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
     73   virtual bool addCodeEmitter(PassManagerBase &PM, CodeGenOpt::Level OptLevel,
     74                               JITCodeEmitter &JCE);
     75 };
     76 
     77 /// X86_32TargetMachine - X86 32-bit target machine.
     78 ///
     79 class X86_32TargetMachine : public X86TargetMachine {
     80   const TargetData  DataLayout; // Calculates type size & alignment
     81   X86InstrInfo      InstrInfo;
     82   X86SelectionDAGInfo TSInfo;
     83   X86TargetLowering TLInfo;
     84   X86JITInfo        JITInfo;
     85 public:
     86   X86_32TargetMachine(const Target &T, StringRef TT,
     87                       StringRef CPU, StringRef FS,
     88                       Reloc::Model RM, CodeModel::Model CM);
     89   virtual const TargetData *getTargetData() const { return &DataLayout; }
     90   virtual const X86TargetLowering *getTargetLowering() const {
     91     return &TLInfo;
     92   }
     93   virtual const X86SelectionDAGInfo *getSelectionDAGInfo() const {
     94     return &TSInfo;
     95   }
     96   virtual const X86InstrInfo     *getInstrInfo() const {
     97     return &InstrInfo;
     98   }
     99   virtual       X86JITInfo       *getJITInfo()         {
    100     return &JITInfo;
    101   }
    102 };
    103 
    104 /// X86_64TargetMachine - X86 64-bit target machine.
    105 ///
    106 class X86_64TargetMachine : public X86TargetMachine {
    107   const TargetData  DataLayout; // Calculates type size & alignment
    108   X86InstrInfo      InstrInfo;
    109   X86SelectionDAGInfo TSInfo;
    110   X86TargetLowering TLInfo;
    111   X86JITInfo        JITInfo;
    112 public:
    113   X86_64TargetMachine(const Target &T, StringRef TT,
    114                       StringRef CPU, StringRef FS,
    115                       Reloc::Model RM, CodeModel::Model CM);
    116   virtual const TargetData *getTargetData() const { return &DataLayout; }
    117   virtual const X86TargetLowering *getTargetLowering() const {
    118     return &TLInfo;
    119   }
    120   virtual const X86SelectionDAGInfo *getSelectionDAGInfo() const {
    121     return &TSInfo;
    122   }
    123   virtual const X86InstrInfo     *getInstrInfo() const {
    124     return &InstrInfo;
    125   }
    126   virtual       X86JITInfo       *getJITInfo()         {
    127     return &JITInfo;
    128   }
    129 };
    130 
    131 } // End llvm namespace
    132 
    133 #endif
    134