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 LLVM_LIB_TARGET_XCORE_XCOREMACHINEFUNCTIONINFO_H
15 #define LLVM_LIB_TARGET_XCORE_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<MachineBasicBlock::iterator, CalleeSavedInfo>>
41   SpillLabels;
42 
43 public:
XCoreFunctionInfo()44   XCoreFunctionInfo() :
45     LRSpillSlotSet(false),
46     FPSpillSlotSet(false),
47     EHSpillSlotSet(false),
48     ReturnStackOffsetSet(false),
49     VarArgsFrameIndex(0),
50     CachedEStackSize(-1) {}
51 
XCoreFunctionInfo(MachineFunction & MF)52   explicit XCoreFunctionInfo(MachineFunction &MF) :
53     LRSpillSlotSet(false),
54     FPSpillSlotSet(false),
55     EHSpillSlotSet(false),
56     ReturnStackOffsetSet(false),
57     VarArgsFrameIndex(0),
58     CachedEStackSize(-1) {}
59 
~XCoreFunctionInfo()60   ~XCoreFunctionInfo() {}
61 
setVarArgsFrameIndex(int off)62   void setVarArgsFrameIndex(int off) { VarArgsFrameIndex = off; }
getVarArgsFrameIndex()63   int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
64 
65   int createLRSpillSlot(MachineFunction &MF);
hasLRSpillSlot()66   bool hasLRSpillSlot() { return LRSpillSlotSet; }
getLRSpillSlot()67   int getLRSpillSlot() const {
68     assert(LRSpillSlotSet && "LR Spill slot not set");
69     return LRSpillSlot;
70   }
71 
72   int createFPSpillSlot(MachineFunction &MF);
hasFPSpillSlot()73   bool hasFPSpillSlot() { return FPSpillSlotSet; }
getFPSpillSlot()74   int getFPSpillSlot() const {
75     assert(FPSpillSlotSet && "FP Spill slot not set");
76     return FPSpillSlot;
77   }
78 
79   const int* createEHSpillSlot(MachineFunction &MF);
hasEHSpillSlot()80   bool hasEHSpillSlot() { return EHSpillSlotSet; }
getEHSpillSlot()81   const int* getEHSpillSlot() const {
82     assert(EHSpillSlotSet && "EH Spill slot not set");
83     return EHSpillSlot;
84   }
85 
setReturnStackOffset(unsigned value)86   void setReturnStackOffset(unsigned value) {
87     assert(!ReturnStackOffsetSet && "Return stack offset set twice");
88     ReturnStackOffset = value;
89     ReturnStackOffsetSet = true;
90   }
91 
getReturnStackOffset()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>> &
getSpillLabels()100   getSpillLabels() {
101     return SpillLabels;
102   }
103 };
104 } // End llvm namespace
105 
106 #endif
107