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   int VarArgsFrameIndex;
37   mutable int CachedEStackSize;
38   std::vector<std::pair<MCSymbol*, CalleeSavedInfo> > SpillLabels;
39 
40 public:
41   XCoreFunctionInfo() :
42     LRSpillSlotSet(false),
43     FPSpillSlotSet(false),
44     EHSpillSlotSet(false),
45     VarArgsFrameIndex(0),
46     CachedEStackSize(-1) {}
47 
48   explicit XCoreFunctionInfo(MachineFunction &MF) :
49     LRSpillSlotSet(false),
50     FPSpillSlotSet(false),
51     EHSpillSlotSet(false),
52     VarArgsFrameIndex(0),
53     CachedEStackSize(-1) {}
54 
55   ~XCoreFunctionInfo() {}
56 
57   void setVarArgsFrameIndex(int off) { VarArgsFrameIndex = off; }
58   int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
59 
60   int createLRSpillSlot(MachineFunction &MF);
61   bool hasLRSpillSlot() { return LRSpillSlotSet; }
62   int getLRSpillSlot() const {
63     assert(LRSpillSlotSet && "LR Spill slot not set");
64     return LRSpillSlot;
65   }
66 
67   int createFPSpillSlot(MachineFunction &MF);
68   bool hasFPSpillSlot() { return FPSpillSlotSet; }
69   int getFPSpillSlot() const {
70     assert(FPSpillSlotSet && "FP Spill slot not set");
71     return FPSpillSlot;
72   }
73 
74   const int* createEHSpillSlot(MachineFunction &MF);
75   bool hasEHSpillSlot() { return EHSpillSlotSet; }
76   const int* getEHSpillSlot() const {
77     assert(EHSpillSlotSet && "EH Spill slot not set");
78     return EHSpillSlot;
79   }
80 
81   bool isLargeFrame(const MachineFunction &MF) const;
82 
83   std::vector<std::pair<MCSymbol*, CalleeSavedInfo> > &getSpillLabels() {
84     return SpillLabels;
85   }
86 };
87 } // End llvm namespace
88 
89 #endif // XCOREMACHINEFUNCTIONINFO_H
90