SparcSubtarget.h revision 341825 
1//===-- SparcSubtarget.h - Define Subtarget for the SPARC -------*- 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 SPARC specific subclass of TargetSubtargetInfo.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H
15#define LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H
16
17#include "SparcFrameLowering.h"
18#include "SparcISelLowering.h"
19#include "SparcInstrInfo.h"
20#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
21#include "llvm/CodeGen/TargetFrameLowering.h"
22#include "llvm/CodeGen/TargetSubtargetInfo.h"
23#include "llvm/IR/DataLayout.h"
24#include <string>
25
26#define GET_SUBTARGETINFO_HEADER
27#include "SparcGenSubtargetInfo.inc"
28
29namespace llvm {
30class StringRef;
31
32class SparcSubtarget : public SparcGenSubtargetInfo {
33  Triple TargetTriple;
34  virtual void anchor();
35  bool UseSoftMulDiv;
36  bool IsV9;
37  bool IsLeon;
38  bool V8DeprecatedInsts;
39  bool IsVIS, IsVIS2, IsVIS3;
40  bool Is64Bit;
41  bool HasHardQuad;
42  bool UsePopc;
43  bool UseSoftFloat;
44  bool HasNoFSMULD;
45  bool HasNoFMULS;
46
47  // LEON features
48  bool HasUmacSmac;
49  bool HasLeonCasa;
50  bool InsertNOPLoad;
51  bool FixAllFDIVSQRT;
52  bool DetectRoundChange;
53
54  SparcInstrInfo InstrInfo;
55  SparcTargetLowering TLInfo;
56  SelectionDAGTargetInfo TSInfo;
57  SparcFrameLowering FrameLowering;
58
59public:
60  SparcSubtarget(const Triple &TT, const std::string &CPU,
61                 const std::string &FS, const TargetMachine &TM, bool is64bit);
62
63  const SparcInstrInfo *getInstrInfo() const override { return &InstrInfo; }
64  const TargetFrameLowering *getFrameLowering() const override {
65    return &FrameLowering;
66  }
67  const SparcRegisterInfo *getRegisterInfo() const override {
68    return &InstrInfo.getRegisterInfo();
69  }
70  const SparcTargetLowering *getTargetLowering() const override {
71    return &TLInfo;
72  }
73  const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
74    return &TSInfo;
75  }
76
77  bool enableMachineScheduler() const override;
78
79  bool useSoftMulDiv() const { return UseSoftMulDiv; }
80  bool isV9() const { return IsV9; }
81  bool isLeon() const { return IsLeon; }
82  bool isVIS() const { return IsVIS; }
83  bool isVIS2() const { return IsVIS2; }
84  bool isVIS3() const { return IsVIS3; }
85  bool useDeprecatedV8Instructions() const { return V8DeprecatedInsts; }
86  bool hasHardQuad() const { return HasHardQuad; }
87  bool usePopc() const { return UsePopc; }
88  bool useSoftFloat() const { return UseSoftFloat; }
89  bool hasNoFSMULD() const { return HasNoFSMULD; }
90  bool hasNoFMULS() const { return HasNoFMULS; }
91
92  // Leon options
93  bool hasUmacSmac() const { return HasUmacSmac; }
94  bool hasLeonCasa() const { return HasLeonCasa; }
95  bool insertNOPLoad() const { return InsertNOPLoad; }
96  bool fixAllFDIVSQRT() const { return FixAllFDIVSQRT; }
97  bool detectRoundChange() const { return DetectRoundChange; }
98
99  /// ParseSubtargetFeatures - Parses features string setting specified
100  /// subtarget options.  Definition of function is auto generated by tblgen.
101  void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
102  SparcSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
103
104  bool is64Bit() const { return Is64Bit; }
105
106  /// The 64-bit ABI uses biased stack and frame pointers, so the stack frame
107  /// of the current function is the area from [%sp+BIAS] to [%fp+BIAS].
108  int64_t getStackPointerBias() const {
109    return is64Bit() ? 2047 : 0;
110  }
111
112  /// Given a actual stack size as determined by FrameInfo, this function
113  /// returns adjusted framesize which includes space for register window
114  /// spills and arguments.
115  int getAdjustedFrameSize(int stackSize) const;
116
117  bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
118};
119
120} // end namespace llvm
121
122#endif
123