1 //=====-- NVPTXSubtarget.h - Define Subtarget for the NVPTX ---*- C++ -*--====//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares the NVPTX specific subclass of TargetSubtarget.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_LIB_TARGET_NVPTX_NVPTXSUBTARGET_H
15 #define LLVM_LIB_TARGET_NVPTX_NVPTXSUBTARGET_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"
27 #define GET_SUBTARGETINFO_HEADER
28 #include "NVPTXGenSubtargetInfo.inc"
32 class NVPTXSubtarget : public NVPTXGenSubtargetInfo {
33 virtual void anchor();
34 std::string TargetName;
37 // PTX version x.y is represented as 10*x+y, e.g. 3.1 == 31
40 // SM version x.y is represented as 10*x+y, e.g. 3.1 == 31
41 unsigned int SmVersion;
43 const NVPTXTargetMachine &TM;
44 NVPTXInstrInfo InstrInfo;
45 NVPTXTargetLowering TLInfo;
46 TargetSelectionDAGInfo TSInfo;
48 // NVPTX does not have any call stack frame, but need a NVPTX specific
49 // FrameLowering class because TargetFrameLowering is abstract.
50 NVPTXFrameLowering FrameLowering;
53 /// This constructor initializes the data members to match that
54 /// of the specified module.
56 NVPTXSubtarget(const std::string &TT, const std::string &CPU,
57 const std::string &FS, const NVPTXTargetMachine &TM,
60 const TargetFrameLowering *getFrameLowering() const override {
61 return &FrameLowering;
63 const NVPTXInstrInfo *getInstrInfo() const override { return &InstrInfo; }
64 const NVPTXRegisterInfo *getRegisterInfo() const override {
65 return &InstrInfo.getRegisterInfo();
67 const NVPTXTargetLowering *getTargetLowering() const override {
70 const TargetSelectionDAGInfo *getSelectionDAGInfo() const override {
74 bool hasBrkPt() const { return SmVersion >= 11; }
75 bool hasAtomRedG32() const { return SmVersion >= 11; }
76 bool hasAtomRedS32() const { return SmVersion >= 12; }
77 bool hasAtomRedG64() const { return SmVersion >= 12; }
78 bool hasAtomRedS64() const { return SmVersion >= 20; }
79 bool hasAtomRedGen32() const { return SmVersion >= 20; }
80 bool hasAtomRedGen64() const { return SmVersion >= 20; }
81 bool hasAtomAddF32() const { return SmVersion >= 20; }
82 bool hasVote() const { return SmVersion >= 12; }
83 bool hasDouble() const { return SmVersion >= 13; }
84 bool reqPTX20() const { return SmVersion >= 20; }
85 bool hasF32FTZ() const { return SmVersion >= 20; }
86 bool hasFMAF32() const { return SmVersion >= 20; }
87 bool hasFMAF64() const { return SmVersion >= 13; }
88 bool hasLDG() const { return SmVersion >= 32; }
89 bool hasLDU() const { return ((SmVersion >= 20) && (SmVersion < 30)); }
90 bool hasGenericLdSt() const { return SmVersion >= 20; }
91 inline bool hasHWROT32() const { return SmVersion >= 32; }
92 inline bool hasSWROT32() const {
93 return ((SmVersion >= 20) && (SmVersion < 32));
95 inline bool hasROT32() const { return hasHWROT32() || hasSWROT32(); }
96 inline bool hasROT64() const { return SmVersion >= 20; }
98 bool hasImageHandles() const {
99 // Enable handles for Kepler+, where CUDA supports indirect surfaces and
101 if (getDrvInterface() == NVPTX::CUDA)
102 return (SmVersion >= 30);
104 // Disabled, otherwise
107 bool is64Bit() const { return Is64Bit; }
109 unsigned int getSmVersion() const { return SmVersion; }
110 NVPTX::DrvInterface getDrvInterface() const;
111 std::string getTargetName() const { return TargetName; }
113 unsigned getPTXVersion() const { return PTXVersion; }
115 NVPTXSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
116 void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
119 } // End llvm namespace