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/CodeGen/SelectionDAGTargetInfo.h"
23 #include "llvm/CodeGen/TargetSubtargetInfo.h"
24 #include "llvm/IR/DataLayout.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   SelectionDAGTargetInfo 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 
getFrameLowering()58   const TargetFrameLowering *getFrameLowering() const override {
59     return &FrameLowering;
60   }
getInstrInfo()61   const NVPTXInstrInfo *getInstrInfo() const override { return &InstrInfo; }
getRegisterInfo()62   const NVPTXRegisterInfo *getRegisterInfo() const override {
63     return &InstrInfo.getRegisterInfo();
64   }
getTargetLowering()65   const NVPTXTargetLowering *getTargetLowering() const override {
66     return &TLInfo;
67   }
getSelectionDAGInfo()68   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
69     return &TSInfo;
70   }
71 
hasAtomAddF64()72   bool hasAtomAddF64() const { return SmVersion >= 60; }
hasAtomScope()73   bool hasAtomScope() const { return SmVersion >= 60; }
hasAtomBitwise64()74   bool hasAtomBitwise64() const { return SmVersion >= 32; }
hasAtomMinMax64()75   bool hasAtomMinMax64() const { return SmVersion >= 32; }
hasLDG()76   bool hasLDG() const { return SmVersion >= 32; }
hasHWROT32()77   inline bool hasHWROT32() const { return SmVersion >= 32; }
78   bool hasImageHandles() const;
hasFP16Math()79   bool hasFP16Math() const { return SmVersion >= 53; }
80   bool allowFP16Math() const;
getSmVersion()81   unsigned int getSmVersion() const { return SmVersion; }
getTargetName()82   std::string getTargetName() const { return TargetName; }
83 
getPTXVersion()84   unsigned getPTXVersion() const { return PTXVersion; }
85 
86   NVPTXSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
87   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
88 };
89 
90 } // End llvm namespace
91 
92 #endif
93