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      1 //=====-- AMDGPUSubtarget.h - Define Subtarget for the AMDIL ---*- 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 /// \file
     11 /// \brief AMDGPU specific subclass of TargetSubtarget.
     12 //
     13 //===----------------------------------------------------------------------===//
     14 
     15 #ifndef AMDGPUSUBTARGET_H
     16 #define AMDGPUSUBTARGET_H
     17 #include "AMDGPU.h"
     18 #include "llvm/ADT/StringExtras.h"
     19 #include "llvm/ADT/StringRef.h"
     20 #include "llvm/Target/TargetSubtargetInfo.h"
     21 
     22 #define GET_SUBTARGETINFO_HEADER
     23 #include "AMDGPUGenSubtargetInfo.inc"
     24 
     25 #define MAX_CB_SIZE (1 << 16)
     26 
     27 namespace llvm {
     28 
     29 class AMDGPUSubtarget : public AMDGPUGenSubtargetInfo {
     30 public:
     31   enum Generation {
     32     R600 = 0,
     33     R700,
     34     EVERGREEN,
     35     NORTHERN_ISLANDS,
     36     SOUTHERN_ISLANDS
     37   };
     38 
     39 private:
     40   size_t DefaultSize[3];
     41   std::string DevName;
     42   bool Is64bit;
     43   bool Is32on64bit;
     44   bool DumpCode;
     45   bool R600ALUInst;
     46   bool HasVertexCache;
     47   short TexVTXClauseSize;
     48   enum Generation Gen;
     49   bool FP64;
     50   bool CaymanISA;
     51 
     52   InstrItineraryData InstrItins;
     53 
     54 public:
     55   AMDGPUSubtarget(StringRef TT, StringRef CPU, StringRef FS);
     56 
     57   const InstrItineraryData &getInstrItineraryData() const { return InstrItins; }
     58   virtual void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
     59 
     60   bool is64bit() const;
     61   bool hasVertexCache() const;
     62   short getTexVTXClauseSize() const;
     63   enum Generation getGeneration() const;
     64   bool hasHWFP64() const;
     65   bool hasCaymanISA() const;
     66 
     67   // Helper functions to simplify if statements
     68   bool isTargetELF() const;
     69   std::string getDataLayout() const;
     70   std::string getDeviceName() const;
     71   virtual size_t getDefaultSize(uint32_t dim) const;
     72   bool dumpCode() const { return DumpCode; }
     73   bool r600ALUEncoding() const { return R600ALUInst; }
     74 
     75 };
     76 
     77 } // End namespace llvm
     78 
     79 #endif // AMDGPUSUBTARGET_H
     80