LLVM  10.0.0svn
NVPTXSubtarget.h
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1 //=====-- NVPTXSubtarget.h - Define Subtarget for the NVPTX ---*- C++ -*--====//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file declares the NVPTX specific subclass of TargetSubtarget.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_LIB_TARGET_NVPTX_NVPTXSUBTARGET_H
14 #define LLVM_LIB_TARGET_NVPTX_NVPTXSUBTARGET_H
15 
16 #include "NVPTX.h"
17 #include "NVPTXFrameLowering.h"
18 #include "NVPTXISelLowering.h"
19 #include "NVPTXInstrInfo.h"
20 #include "NVPTXRegisterInfo.h"
23 #include "llvm/IR/DataLayout.h"
24 #include <string>
25 
26 #define GET_SUBTARGETINFO_HEADER
27 #include "NVPTXGenSubtargetInfo.inc"
28 
29 namespace llvm {
30 
32  virtual void anchor();
33  std::string TargetName;
34 
35  // PTX version x.y is represented as 10*x+y, e.g. 3.1 == 31
36  unsigned PTXVersion;
37 
38  // SM version x.y is represented as 10*x+y, e.g. 3.1 == 31
39  unsigned int SmVersion;
40 
41  const NVPTXTargetMachine &TM;
42  NVPTXInstrInfo InstrInfo;
43  NVPTXTargetLowering TLInfo;
45 
46  // NVPTX does not have any call stack frame, but need a NVPTX specific
47  // FrameLowering class because TargetFrameLowering is abstract.
48  NVPTXFrameLowering FrameLowering;
49 
50 public:
51  /// This constructor initializes the data members to match that
52  /// of the specified module.
53  ///
54  NVPTXSubtarget(const Triple &TT, const std::string &CPU,
55  const std::string &FS, const NVPTXTargetMachine &TM);
56 
57  const TargetFrameLowering *getFrameLowering() const override {
58  return &FrameLowering;
59  }
60  const NVPTXInstrInfo *getInstrInfo() const override { return &InstrInfo; }
61  const NVPTXRegisterInfo *getRegisterInfo() const override {
62  return &InstrInfo.getRegisterInfo();
63  }
64  const NVPTXTargetLowering *getTargetLowering() const override {
65  return &TLInfo;
66  }
67  const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
68  return &TSInfo;
69  }
70 
71  bool hasAtomAddF64() const { return SmVersion >= 60; }
72  bool hasAtomScope() const { return SmVersion >= 60; }
73  bool hasAtomBitwise64() const { return SmVersion >= 32; }
74  bool hasAtomMinMax64() const { return SmVersion >= 32; }
75  bool hasLDG() const { return SmVersion >= 32; }
76  inline bool hasHWROT32() const { return SmVersion >= 32; }
77  bool hasImageHandles() const;
78  bool hasFP16Math() const { return SmVersion >= 53; }
79  bool allowFP16Math() const;
80  unsigned int getSmVersion() const { return SmVersion; }
81  std::string getTargetName() const { return TargetName; }
82 
83  unsigned getPTXVersion() const { return PTXVersion; }
84 
87 };
88 
89 } // End llvm namespace
90 
91 #endif
unsigned getPTXVersion() const
This class represents lattice values for constants.
Definition: AllocatorList.h:23
void ParseSubtargetFeatures(StringRef CPU, StringRef FS)
bool hasImageHandles() const
NVPTXSubtarget(const Triple &TT, const std::string &CPU, const std::string &FS, const NVPTXTargetMachine &TM)
This constructor initializes the data members to match that of the specified module.
bool hasAtomAddF64() const
bool hasAtomBitwise64() const
bool hasFP16Math() const
const NVPTXTargetLowering * getTargetLowering() const override
bool hasAtomMinMax64() const
std::string getTargetName() const
Targets can subclass this to parameterize the SelectionDAG lowering and instruction selection process...
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:43
Information about stack frame layout on the target.
bool hasHWROT32() const
const NVPTXInstrInfo * getInstrInfo() const override
NVPTXTargetMachine.
const NVPTXRegisterInfo & getRegisterInfo() const
const SelectionDAGTargetInfo * getSelectionDAGInfo() const override
bool hasAtomScope() const
const TargetFrameLowering * getFrameLowering() const override
bool allowFP16Math() const
unsigned int getSmVersion() const
NVPTXSubtarget & initializeSubtargetDependencies(StringRef CPU, StringRef FS)
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:48
const NVPTXRegisterInfo * getRegisterInfo() const override