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 
21 namespace llvm {
22 
23 // Forward declarations
24 class Function;
25 
26 /// XCoreFunctionInfo - This class is derived from MachineFunction private
27 /// XCore target-specific information for each MachineFunction.
28 class 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<MCSymbol*, CalleeSavedInfo> > SpillLabels;
41 
42 public:
43   XCoreFunctionInfo() :
44     LRSpillSlotSet(false),
45     FPSpillSlotSet(false),
46     EHSpillSlotSet(false),
47     ReturnStackOffsetSet(false),
48     VarArgsFrameIndex(0),
49     CachedEStackSize(-1) {}
50 
51   explicit XCoreFunctionInfo(MachineFunction &MF) :
52     LRSpillSlotSet(false),
53     FPSpillSlotSet(false),
54     EHSpillSlotSet(false),
55     VarArgsFrameIndex(0),
56     CachedEStackSize(-1) {}
57 
58   ~XCoreFunctionInfo() {}
59 
60   void setVarArgsFrameIndex(int off) { VarArgsFrameIndex = off; }
61   int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
62 
63   int createLRSpillSlot(MachineFunction &MF);
64   bool hasLRSpillSlot() { return LRSpillSlotSet; }
65   int getLRSpillSlot() const {
66     assert(LRSpillSlotSet && "LR Spill slot not set");
67     return LRSpillSlot;
68   }
69 
70   int createFPSpillSlot(MachineFunction &MF);
71   bool hasFPSpillSlot() { return FPSpillSlotSet; }
72   int getFPSpillSlot() const {
73     assert(FPSpillSlotSet && "FP Spill slot not set");
74     return FPSpillSlot;
75   }
76 
77   const int* createEHSpillSlot(MachineFunction &MF);
78   bool hasEHSpillSlot() { return EHSpillSlotSet; }
79   const int* getEHSpillSlot() const {
80     assert(EHSpillSlotSet && "EH Spill slot not set");
81     return EHSpillSlot;
82   }
83 
84   void setReturnStackOffset(unsigned value) {
85     assert(!ReturnStackOffsetSet && "Return stack offset set twice");
86     ReturnStackOffset = value;
87     ReturnStackOffsetSet = true;
88   }
89 
90   unsigned getReturnStackOffset() const {
91     assert(ReturnStackOffsetSet && "Return stack offset not set");
92     return ReturnStackOffset;
93   }
94 
95   bool isLargeFrame(const MachineFunction &MF) const;
96 
97   std::vector<std::pair<MCSymbol*, CalleeSavedInfo> > &getSpillLabels() {
98     return SpillLabels;
99   }
100 };
101 } // End llvm namespace
102 
103 #endif // XCOREMACHINEFUNCTIONINFO_H
104