1//===-- XCoreMachineFuctionInfo.h - XCore machine function info -*- 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 XCore-specific per-machine-function information.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef XCOREMACHINEFUNCTIONINFO_H
15#define XCOREMACHINEFUNCTIONINFO_H
16
17#include "llvm/CodeGen/MachineFrameInfo.h"
18#include "llvm/CodeGen/MachineFunction.h"
19#include <vector>
20
21namespace llvm {
22
23// Forward declarations
24class Function;
25
26/// XCoreFunctionInfo - This class is derived from MachineFunction private
27/// XCore target-specific information for each MachineFunction.
28class XCoreFunctionInfo : public MachineFunctionInfo {
29  virtual void anchor();
30  bool LRSpillSlotSet;
31  int LRSpillSlot;
32  bool FPSpillSlotSet;
33  int FPSpillSlot;
34  bool EHSpillSlotSet;
35  int EHSpillSlot[2];
36  unsigned ReturnStackOffset;
37  bool ReturnStackOffsetSet;
38  int VarArgsFrameIndex;
39  mutable int CachedEStackSize;
40  std::vector<std::pair<MachineBasicBlock::iterator, CalleeSavedInfo>>
41  SpillLabels;
42
43public:
44  XCoreFunctionInfo() :
45    LRSpillSlotSet(false),
46    FPSpillSlotSet(false),
47    EHSpillSlotSet(false),
48    ReturnStackOffsetSet(false),
49    VarArgsFrameIndex(0),
50    CachedEStackSize(-1) {}
51
52  explicit XCoreFunctionInfo(MachineFunction &MF) :
53    LRSpillSlotSet(false),
54    FPSpillSlotSet(false),
55    EHSpillSlotSet(false),
56    ReturnStackOffsetSet(false),
57    VarArgsFrameIndex(0),
58    CachedEStackSize(-1) {}
59
60  ~XCoreFunctionInfo() {}
61
62  void setVarArgsFrameIndex(int off) { VarArgsFrameIndex = off; }
63  int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
64
65  int createLRSpillSlot(MachineFunction &MF);
66  bool hasLRSpillSlot() { return LRSpillSlotSet; }
67  int getLRSpillSlot() const {
68    assert(LRSpillSlotSet && "LR Spill slot not set");
69    return LRSpillSlot;
70  }
71
72  int createFPSpillSlot(MachineFunction &MF);
73  bool hasFPSpillSlot() { return FPSpillSlotSet; }
74  int getFPSpillSlot() const {
75    assert(FPSpillSlotSet && "FP Spill slot not set");
76    return FPSpillSlot;
77  }
78
79  const int* createEHSpillSlot(MachineFunction &MF);
80  bool hasEHSpillSlot() { return EHSpillSlotSet; }
81  const int* getEHSpillSlot() const {
82    assert(EHSpillSlotSet && "EH Spill slot not set");
83    return EHSpillSlot;
84  }
85
86  void setReturnStackOffset(unsigned value) {
87    assert(!ReturnStackOffsetSet && "Return stack offset set twice");
88    ReturnStackOffset = value;
89    ReturnStackOffsetSet = true;
90  }
91
92  unsigned getReturnStackOffset() const {
93    assert(ReturnStackOffsetSet && "Return stack offset not set");
94    return ReturnStackOffset;
95  }
96
97  bool isLargeFrame(const MachineFunction &MF) const;
98
99  std::vector<std::pair<MachineBasicBlock::iterator, CalleeSavedInfo>> &
100  getSpillLabels() {
101    return SpillLabels;
102  }
103};
104} // End llvm namespace
105
106#endif // XCOREMACHINEFUNCTIONINFO_H
107