- // Range of frame object indices.
- // InArgFIRange: Range of indices of all frame objects created during call to
- // LowerFormalArguments.
- // OutArgFIRange: Range of indices of all frame objects created during call to
- // LowerCall except for the frame object for restoring $gp.
- std::pair<int, int> InArgFIRange, OutArgFIRange;
- int GPFI; // Index of the frame object for restoring $gp
- mutable int DynAllocFI; // Frame index of dynamically allocated stack area.
- unsigned MaxCallFrameSize;
-
-public:
- MipsFunctionInfo(MachineFunction& MF)
- : MF(MF), SRetReturnReg(0), GlobalBaseReg(0),
- VarArgsFrameIndex(0), InArgFIRange(std::make_pair(-1, 0)),
- OutArgFIRange(std::make_pair(-1, 0)), GPFI(0), DynAllocFI(0),
- MaxCallFrameSize(0)
- {}
-
- bool isInArgFI(int FI) const {
- return FI <= InArgFIRange.first && FI >= InArgFIRange.second;
- }
- void setLastInArgFI(int FI) { InArgFIRange.second = FI; }
-
- bool isOutArgFI(int FI) const {
- return FI <= OutArgFIRange.first && FI >= OutArgFIRange.second;
- }
- void extendOutArgFIRange(int FirstFI, int LastFI) {
- if (!OutArgFIRange.second)
- // this must be the first time this function was called.
- OutArgFIRange.first = FirstFI;
- OutArgFIRange.second = LastFI;
- }
-
- int getGPFI() const { return GPFI; }
- void setGPFI(int FI) { GPFI = FI; }
- bool needGPSaveRestore() const { return getGPFI(); }
- bool isGPFI(int FI) const { return GPFI && GPFI == FI; }
-
- // The first call to this function creates a frame object for dynamically
- // allocated stack area.
- int getDynAllocFI() const {
- if (!DynAllocFI)
- DynAllocFI = MF.getFrameInfo()->CreateFixedObject(4, 0, true);
-
- return DynAllocFI;
- }
- bool isDynAllocFI(int FI) const { return DynAllocFI && DynAllocFI == FI; }