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      1 //=====-- NVPTXSubtarget.h - Define Subtarget for the NVPTX ---*- 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 NVPTX specific subclass of TargetSubtarget.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #ifndef NVPTXSUBTARGET_H
     15 #define NVPTXSUBTARGET_H
     16 
     17 #include "NVPTX.h"
     18 #include "NVPTXFrameLowering.h"
     19 #include "NVPTXISelLowering.h"
     20 #include "NVPTXInstrInfo.h"
     21 #include "NVPTXRegisterInfo.h"
     22 #include "llvm/IR/DataLayout.h"
     23 #include "llvm/Target/TargetSelectionDAGInfo.h"
     24 #include "llvm/Target/TargetSubtargetInfo.h"
     25 #include <string>
     26 
     27 #define GET_SUBTARGETINFO_HEADER
     28 #include "NVPTXGenSubtargetInfo.inc"
     29 
     30 namespace llvm {
     31 
     32 class NVPTXSubtarget : public NVPTXGenSubtargetInfo {
     33   virtual void anchor();
     34   std::string TargetName;
     35   NVPTX::DrvInterface drvInterface;
     36   bool Is64Bit;
     37 
     38   // PTX version x.y is represented as 10*x+y, e.g. 3.1 == 31
     39   unsigned PTXVersion;
     40 
     41   // SM version x.y is represented as 10*x+y, e.g. 3.1 == 31
     42   unsigned int SmVersion;
     43 
     44   const DataLayout DL; // Calculates type size & alignment
     45   NVPTXInstrInfo InstrInfo;
     46   NVPTXTargetLowering TLInfo;
     47   TargetSelectionDAGInfo TSInfo;
     48 
     49   // NVPTX does not have any call stack frame, but need a NVPTX specific
     50   // FrameLowering class because TargetFrameLowering is abstract.
     51   NVPTXFrameLowering FrameLowering;
     52 
     53 public:
     54   /// This constructor initializes the data members to match that
     55   /// of the specified module.
     56   ///
     57   NVPTXSubtarget(const std::string &TT, const std::string &CPU,
     58                  const std::string &FS, const TargetMachine &TM, bool is64Bit);
     59 
     60   const TargetFrameLowering *getFrameLowering() const { return &FrameLowering; }
     61   const NVPTXInstrInfo *getInstrInfo() const { return &InstrInfo; }
     62   const DataLayout *getDataLayout() const { return &DL; }
     63   const NVPTXRegisterInfo *getRegisterInfo() const {
     64     return &InstrInfo.getRegisterInfo();
     65   }
     66   const NVPTXTargetLowering *getTargetLowering() const { return &TLInfo; }
     67   const TargetSelectionDAGInfo *getSelectionDAGInfo() const { return &TSInfo; }
     68 
     69   bool hasBrkPt() const { return SmVersion >= 11; }
     70   bool hasAtomRedG32() const { return SmVersion >= 11; }
     71   bool hasAtomRedS32() const { return SmVersion >= 12; }
     72   bool hasAtomRedG64() const { return SmVersion >= 12; }
     73   bool hasAtomRedS64() const { return SmVersion >= 20; }
     74   bool hasAtomRedGen32() const { return SmVersion >= 20; }
     75   bool hasAtomRedGen64() const { return SmVersion >= 20; }
     76   bool hasAtomAddF32() const { return SmVersion >= 20; }
     77   bool hasVote() const { return SmVersion >= 12; }
     78   bool hasDouble() const { return SmVersion >= 13; }
     79   bool reqPTX20() const { return SmVersion >= 20; }
     80   bool hasF32FTZ() const { return SmVersion >= 20; }
     81   bool hasFMAF32() const { return SmVersion >= 20; }
     82   bool hasFMAF64() const { return SmVersion >= 13; }
     83   bool hasLDG() const { return SmVersion >= 32; }
     84   bool hasLDU() const { return ((SmVersion >= 20) && (SmVersion < 30)); }
     85   bool hasGenericLdSt() const { return SmVersion >= 20; }
     86   inline bool hasHWROT32() const { return SmVersion >= 32; }
     87   inline bool hasSWROT32() const {
     88     return ((SmVersion >= 20) && (SmVersion < 32));
     89   }
     90   inline bool hasROT32() const { return hasHWROT32() || hasSWROT32(); }
     91   inline bool hasROT64() const { return SmVersion >= 20; }
     92 
     93   bool hasImageHandles() const {
     94     // Currently disabled
     95     return false;
     96   }
     97   bool is64Bit() const { return Is64Bit; }
     98 
     99   unsigned int getSmVersion() const { return SmVersion; }
    100   NVPTX::DrvInterface getDrvInterface() const { return drvInterface; }
    101   std::string getTargetName() const { return TargetName; }
    102 
    103   unsigned getPTXVersion() const { return PTXVersion; }
    104 
    105   NVPTXSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
    106   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
    107 };
    108 
    109 } // End llvm namespace
    110 
    111 #endif // NVPTXSUBTARGET_H
    112