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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 "llvm/Target/TargetSubtargetInfo.h"
     19 
     20 #define GET_SUBTARGETINFO_HEADER
     21 #include "NVPTXGenSubtargetInfo.inc"
     22 
     23 #include <string>
     24 
     25 namespace llvm {
     26 
     27 class NVPTXSubtarget : public NVPTXGenSubtargetInfo {
     28 
     29   std::string TargetName;
     30   NVPTX::DrvInterface drvInterface;
     31   bool Is64Bit;
     32 
     33   // PTX version x.y is represented as 10*x+y, e.g. 3.1 == 31
     34   unsigned PTXVersion;
     35 
     36   // SM version x.y is represented as 10*x+y, e.g. 3.1 == 31
     37   unsigned int SmVersion;
     38 
     39 public:
     40   /// This constructor initializes the data members to match that
     41   /// of the specified module.
     42   ///
     43   NVPTXSubtarget(const std::string &TT, const std::string &CPU,
     44                  const std::string &FS, bool is64Bit);
     45 
     46   bool hasBrkPt() const { return SmVersion >= 11; }
     47   bool hasAtomRedG32() const { return SmVersion >= 11; }
     48   bool hasAtomRedS32() const { return SmVersion >= 12; }
     49   bool hasAtomRedG64() const { return SmVersion >= 12; }
     50   bool hasAtomRedS64() const { return SmVersion >= 20; }
     51   bool hasAtomRedGen32() const { return SmVersion >= 20; }
     52   bool hasAtomRedGen64() const { return SmVersion >= 20; }
     53   bool hasAtomAddF32() const { return SmVersion >= 20; }
     54   bool hasVote() const { return SmVersion >= 12; }
     55   bool hasDouble() const { return SmVersion >= 13; }
     56   bool reqPTX20() const { return SmVersion >= 20; }
     57   bool hasF32FTZ() const { return SmVersion >= 20; }
     58   bool hasFMAF32() const { return SmVersion >= 20; }
     59   bool hasFMAF64() const { return SmVersion >= 13; }
     60   bool hasLDG() const { return SmVersion >= 32; }
     61   bool hasLDU() const { return SmVersion >= 20; }
     62   bool hasGenericLdSt() const { return SmVersion >= 20; }
     63   inline bool hasHWROT32() const { return false; }
     64   inline bool hasSWROT32() const { return true; }
     65   inline bool hasROT32() const { return hasHWROT32() || hasSWROT32(); }
     66   inline bool hasROT64() const { return SmVersion >= 20; }
     67 
     68   bool is64Bit() const { return Is64Bit; }
     69 
     70   unsigned int getSmVersion() const { return SmVersion; }
     71   NVPTX::DrvInterface getDrvInterface() const { return drvInterface; }
     72   std::string getTargetName() const { return TargetName; }
     73 
     74   unsigned getPTXVersion() const { return PTXVersion; }
     75 
     76   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
     77 
     78   std::string getDataLayout() const {
     79     const char *p;
     80     if (is64Bit())
     81       p = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-"
     82           "f32:32:32-f64:64:64-v16:16:16-v32:32:32-v64:64:64-v128:128:128-"
     83           "n16:32:64";
     84     else
     85       p = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-"
     86           "f32:32:32-f64:64:64-v16:16:16-v32:32:32-v64:64:64-v128:128:128-"
     87           "n16:32:64";
     88 
     89     return std::string(p);
     90   }
     91 
     92 };
     93 
     94 } // End llvm namespace
     95 
     96 #endif // NVPTXSUBTARGET_H
     97