SparcSubtarget.h revision cd81d94322a39503e4a3e87b6ee03d4fcb3465fb 
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 SPARC_SUBTARGET_H
15#define SPARC_SUBTARGET_H
16
17#include "SparcFrameLowering.h"
18#include "SparcInstrInfo.h"
19#include "SparcISelLowering.h"
20#include "SparcJITInfo.h"
21#include "SparcSelectionDAGInfo.h"
22#include "llvm/IR/DataLayout.h"
23#include "llvm/Target/TargetFrameLowering.h"
24#include "llvm/Target/TargetSubtargetInfo.h"
25#include <string>
26
27#define GET_SUBTARGETINFO_HEADER
28#include "SparcGenSubtargetInfo.inc"
29
30namespace llvm {
31class StringRef;
32
33class SparcSubtarget : public SparcGenSubtargetInfo {
34  virtual void anchor();
35  bool IsV9;
36  bool V8DeprecatedInsts;
37  bool IsVIS, IsVIS2, IsVIS3;
38  bool Is64Bit;
39  bool HasHardQuad;
40  bool UsePopc;
41  const DataLayout DL;       // Calculates type size & alignment
42  SparcInstrInfo InstrInfo;
43  SparcTargetLowering TLInfo;
44  SparcSelectionDAGInfo TSInfo;
45  SparcFrameLowering FrameLowering;
46  SparcJITInfo JITInfo;
47
48public:
49  SparcSubtarget(const std::string &TT, const std::string &CPU,
50                 const std::string &FS, TargetMachine &TM, bool is64bit);
51
52  const SparcInstrInfo *getInstrInfo() const { return &InstrInfo; }
53  const TargetFrameLowering *getFrameLowering() const { return &FrameLowering; }
54  const SparcRegisterInfo *getRegisterInfo() const {
55    return &InstrInfo.getRegisterInfo();
56  }
57  const SparcTargetLowering *getTargetLowering() const { return &TLInfo; }
58  const SparcSelectionDAGInfo *getSelectionDAGInfo() const { return &TSInfo; }
59  SparcJITInfo *getJITInfo() { return &JITInfo; }
60  const DataLayout *getDataLayout() const { return &DL; }
61
62  bool isV9() const { return IsV9; }
63  bool isVIS() const { return IsVIS; }
64  bool isVIS2() const { return IsVIS2; }
65  bool isVIS3() const { return IsVIS3; }
66  bool useDeprecatedV8Instructions() const { return V8DeprecatedInsts; }
67  bool hasHardQuad() const { return HasHardQuad; }
68  bool usePopc() const { return UsePopc; }
69
70  /// ParseSubtargetFeatures - Parses features string setting specified
71  /// subtarget options.  Definition of function is auto generated by tblgen.
72  void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
73  SparcSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
74
75  bool is64Bit() const { return Is64Bit; }
76
77  /// The 64-bit ABI uses biased stack and frame pointers, so the stack frame
78  /// of the current function is the area from [%sp+BIAS] to [%fp+BIAS].
79  int64_t getStackPointerBias() const {
80    return is64Bit() ? 2047 : 0;
81  }
82
83  /// Given a actual stack size as determined by FrameInfo, this function
84  /// returns adjusted framesize which includes space for register window
85  /// spills and arguments.
86  int getAdjustedFrameSize(int stackSize) const;
87
88};
89
90} // end namespace llvm
91
92#endif
93