HexagonSubtarget.h revision 276479 
1//===-- HexagonSubtarget.h - Define Subtarget for the Hexagon ---*- 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 Hexagon specific subclass of TargetSubtarget.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef Hexagon_SUBTARGET_H
15#define Hexagon_SUBTARGET_H
16
17#include "HexagonFrameLowering.h"
18#include "HexagonInstrInfo.h"
19#include "HexagonISelLowering.h"
20#include "HexagonSelectionDAGInfo.h"
21#include "llvm/IR/DataLayout.h"
22#include "llvm/Target/TargetMachine.h"
23#include "llvm/Target/TargetSubtargetInfo.h"
24#include <string>
25
26#define GET_SUBTARGETINFO_HEADER
27#include "HexagonGenSubtargetInfo.inc"
28
29#define Hexagon_SMALL_DATA_THRESHOLD 8
30#define Hexagon_SLOTS 4
31
32namespace llvm {
33
34class HexagonSubtarget : public HexagonGenSubtargetInfo {
35  virtual void anchor();
36
37  bool UseMemOps;
38  bool ModeIEEERndNear;
39
40public:
41  enum HexagonArchEnum {
42    V1, V2, V3, V4, V5
43  };
44
45  HexagonArchEnum HexagonArchVersion;
46private:
47  std::string CPUString;
48  const DataLayout DL;       // Calculates type size & alignment.
49  HexagonInstrInfo InstrInfo;
50  HexagonTargetLowering TLInfo;
51  HexagonSelectionDAGInfo TSInfo;
52  HexagonFrameLowering FrameLowering;
53  InstrItineraryData InstrItins;
54
55public:
56  HexagonSubtarget(StringRef TT, StringRef CPU, StringRef FS,
57                   const TargetMachine &TM);
58
59  /// getInstrItins - Return the instruction itineraies based on subtarget
60  /// selection.
61  const InstrItineraryData &getInstrItineraryData() const { return InstrItins; }
62  const HexagonInstrInfo *getInstrInfo() const { return &InstrInfo; }
63  const HexagonRegisterInfo *getRegisterInfo() const {
64    return &InstrInfo.getRegisterInfo();
65  }
66  const HexagonTargetLowering *getTargetLowering() const { return &TLInfo; }
67  const HexagonFrameLowering *getFrameLowering() const {
68    return &FrameLowering;
69  }
70  const HexagonSelectionDAGInfo *getSelectionDAGInfo() const { return &TSInfo; }
71  const DataLayout *getDataLayout() const { return &DL; }
72
73  HexagonSubtarget &initializeSubtargetDependencies(StringRef CPU,
74                                                    StringRef FS);
75
76  /// ParseSubtargetFeatures - Parses features string setting specified
77  /// subtarget options.  Definition of function is auto generated by tblgen.
78  void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
79
80  bool hasV2TOps () const { return HexagonArchVersion >= V2; }
81  bool hasV2TOpsOnly () const { return HexagonArchVersion == V2; }
82  bool hasV3TOps () const { return HexagonArchVersion >= V3; }
83  bool hasV3TOpsOnly () const { return HexagonArchVersion == V3; }
84  bool hasV4TOps () const { return HexagonArchVersion >= V4; }
85  bool hasV4TOpsOnly () const { return HexagonArchVersion == V4; }
86  bool useMemOps () const { return HexagonArchVersion >= V4 && UseMemOps; }
87  bool hasV5TOps () const { return HexagonArchVersion >= V5; }
88  bool hasV5TOpsOnly () const { return HexagonArchVersion == V5; }
89  bool modeIEEERndNear () const { return ModeIEEERndNear; }
90
91  bool isSubtargetV2() const { return HexagonArchVersion == V2;}
92  const std::string &getCPUString () const { return CPUString; }
93
94  // Threshold for small data section
95  unsigned getSmallDataThreshold() const {
96    return Hexagon_SMALL_DATA_THRESHOLD;
97  }
98  const HexagonArchEnum &getHexagonArchVersion() const {
99    return  HexagonArchVersion;
100  }
101};
102
103} // end namespace llvm
104
105#endif
106