SparcSubtarget.h revision 296417 
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 "SparcInstrInfo.h"
19#include "SparcISelLowering.h"
20#include "llvm/IR/DataLayout.h"
21#include "llvm/Target/TargetFrameLowering.h"
22#include "llvm/Target/TargetSelectionDAGInfo.h"
23#include "llvm/Target/TargetSubtargetInfo.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  virtual void anchor();
34  bool IsV9;
35  bool V8DeprecatedInsts;
36  bool IsVIS, IsVIS2, IsVIS3;
37  bool Is64Bit;
38  bool HasHardQuad;
39  bool UsePopc;
40  SparcInstrInfo InstrInfo;
41  SparcTargetLowering TLInfo;
42  TargetSelectionDAGInfo TSInfo;
43  SparcFrameLowering FrameLowering;
44
45public:
46  SparcSubtarget(const Triple &TT, const std::string &CPU,
47                 const std::string &FS, TargetMachine &TM, bool is64bit);
48
49  const SparcInstrInfo *getInstrInfo() const override { return &InstrInfo; }
50  const TargetFrameLowering *getFrameLowering() const override {
51    return &FrameLowering;
52  }
53  const SparcRegisterInfo *getRegisterInfo() const override {
54    return &InstrInfo.getRegisterInfo();
55  }
56  const SparcTargetLowering *getTargetLowering() const override {
57    return &TLInfo;
58  }
59  const TargetSelectionDAGInfo *getSelectionDAGInfo() const override {
60    return &TSInfo;
61  }
62
63  bool enableMachineScheduler() const override;
64
65  bool isV9() const { return IsV9; }
66  bool isVIS() const { return IsVIS; }
67  bool isVIS2() const { return IsVIS2; }
68  bool isVIS3() const { return IsVIS3; }
69  bool useDeprecatedV8Instructions() const { return V8DeprecatedInsts; }
70  bool hasHardQuad() const { return HasHardQuad; }
71  bool usePopc() const { return UsePopc; }
72
73  /// ParseSubtargetFeatures - Parses features string setting specified
74  /// subtarget options.  Definition of function is auto generated by tblgen.
75  void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
76  SparcSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
77
78  bool is64Bit() const { return Is64Bit; }
79
80  /// The 64-bit ABI uses biased stack and frame pointers, so the stack frame
81  /// of the current function is the area from [%sp+BIAS] to [%fp+BIAS].
82  int64_t getStackPointerBias() const {
83    return is64Bit() ? 2047 : 0;
84  }
85
86  /// Given a actual stack size as determined by FrameInfo, this function
87  /// returns adjusted framesize which includes space for register window
88  /// spills and arguments.
89  int getAdjustedFrameSize(int stackSize) const;
90};
91
92} // end namespace llvm
93
94#endif
95