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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 LLVM_LIB_TARGET_NVPTX_NVPTXSUBTARGET_H
     15 #define LLVM_LIB_TARGET_NVPTX_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 
     36   // PTX version x.y is represented as 10*x+y, e.g. 3.1 == 31
     37   unsigned PTXVersion;
     38 
     39   // SM version x.y is represented as 10*x+y, e.g. 3.1 == 31
     40   unsigned int SmVersion;
     41 
     42   const NVPTXTargetMachine &TM;
     43   NVPTXInstrInfo InstrInfo;
     44   NVPTXTargetLowering TLInfo;
     45   TargetSelectionDAGInfo TSInfo;
     46 
     47   // NVPTX does not have any call stack frame, but need a NVPTX specific
     48   // FrameLowering class because TargetFrameLowering is abstract.
     49   NVPTXFrameLowering FrameLowering;
     50 
     51 public:
     52   /// This constructor initializes the data members to match that
     53   /// of the specified module.
     54   ///
     55   NVPTXSubtarget(const Triple &TT, const std::string &CPU,
     56                  const std::string &FS, const NVPTXTargetMachine &TM);
     57 
     58   const TargetFrameLowering *getFrameLowering() const override {
     59     return &FrameLowering;
     60   }
     61   const NVPTXInstrInfo *getInstrInfo() const override { return &InstrInfo; }
     62   const NVPTXRegisterInfo *getRegisterInfo() const override {
     63     return &InstrInfo.getRegisterInfo();
     64   }
     65   const NVPTXTargetLowering *getTargetLowering() const override {
     66     return &TLInfo;
     67   }
     68   const TargetSelectionDAGInfo *getSelectionDAGInfo() const override {
     69     return &TSInfo;
     70   }
     71 
     72   bool hasBrkPt() const { return SmVersion >= 11; }
     73   bool hasAtomRedG32() const { return SmVersion >= 11; }
     74   bool hasAtomRedS32() const { return SmVersion >= 12; }
     75   bool hasAtomRedG64() const { return SmVersion >= 12; }
     76   bool hasAtomRedS64() const { return SmVersion >= 20; }
     77   bool hasAtomRedGen32() const { return SmVersion >= 20; }
     78   bool hasAtomRedGen64() const { return SmVersion >= 20; }
     79   bool hasAtomAddF32() const { return SmVersion >= 20; }
     80   bool hasVote() const { return SmVersion >= 12; }
     81   bool hasDouble() const { return SmVersion >= 13; }
     82   bool reqPTX20() const { return SmVersion >= 20; }
     83   bool hasF32FTZ() const { return SmVersion >= 20; }
     84   bool hasFMAF32() const { return SmVersion >= 20; }
     85   bool hasFMAF64() const { return SmVersion >= 13; }
     86   bool hasLDG() const { return SmVersion >= 32; }
     87   bool hasLDU() const { return ((SmVersion >= 20) && (SmVersion < 30)); }
     88   bool hasGenericLdSt() const { return SmVersion >= 20; }
     89   inline bool hasHWROT32() const { return SmVersion >= 32; }
     90   inline bool hasSWROT32() const {
     91     return ((SmVersion >= 20) && (SmVersion < 32));
     92   }
     93   inline bool hasROT32() const { return hasHWROT32() || hasSWROT32(); }
     94   inline bool hasROT64() const { return SmVersion >= 20; }
     95   bool hasImageHandles() const;
     96 
     97   unsigned int getSmVersion() const { return SmVersion; }
     98   std::string getTargetName() const { return TargetName; }
     99 
    100   unsigned getPTXVersion() const { return PTXVersion; }
    101 
    102   NVPTXSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
    103   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
    104 };
    105 
    106 } // End llvm namespace
    107 
    108 #endif
    109