//===-- PPCMachineFunctionInfo.h - Private data used for PowerPC --*- C++ -*-=// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file declares the PowerPC specific subclass of MachineFunctionInfo. // //===----------------------------------------------------------------------===// #ifndef PPC_MACHINE_FUNCTION_INFO_H #define PPC_MACHINE_FUNCTION_INFO_H #include "llvm/CodeGen/MachineFunction.h" namespace llvm { /// PPCFunctionInfo - This class is derived from MachineFunction private /// PowerPC target-specific information for each MachineFunction. class PPCFunctionInfo : public MachineFunctionInfo { virtual void anchor(); /// FramePointerSaveIndex - Frame index of where the old frame pointer is /// stored. Also used as an anchor for instructions that need to be altered /// when using frame pointers (dyna_add, dyna_sub.) int FramePointerSaveIndex; /// ReturnAddrSaveIndex - Frame index of where the return address is stored. /// int ReturnAddrSaveIndex; /// Frame index where the old base pointer is stored. int BasePointerSaveIndex; /// MustSaveLR - Indicates whether LR is defined (or clobbered) in the current /// function. This is only valid after the initial scan of the function by /// PEI. bool MustSaveLR; /// Does this function have any stack spills. bool HasSpills; /// Does this function spill using instructions with only r+r (not r+i) /// forms. bool HasNonRISpills; /// SpillsCR - Indicates whether CR is spilled in the current function. bool SpillsCR; /// Indicates whether VRSAVE is spilled in the current function. bool SpillsVRSAVE; /// LRStoreRequired - The bool indicates whether there is some explicit use of /// the LR/LR8 stack slot that is not obvious from scanning the code. This /// requires that the code generator produce a store of LR to the stack on /// entry, even though LR may otherwise apparently not be used. bool LRStoreRequired; /// MinReservedArea - This is the frame size that is at least reserved in a /// potential caller (parameter+linkage area). unsigned MinReservedArea; /// TailCallSPDelta - Stack pointer delta used when tail calling. Maximum /// amount the stack pointer is adjusted to make the frame bigger for tail /// calls. Used for creating an area before the register spill area. int TailCallSPDelta; /// HasFastCall - Does this function contain a fast call. Used to determine /// how the caller's stack pointer should be calculated (epilog/dynamicalloc). bool HasFastCall; /// VarArgsFrameIndex - FrameIndex for start of varargs area. int VarArgsFrameIndex; /// VarArgsStackOffset - StackOffset for start of stack /// arguments. int VarArgsStackOffset; /// VarArgsNumGPR - Index of the first unused integer /// register for parameter passing. unsigned VarArgsNumGPR; /// VarArgsNumFPR - Index of the first unused double /// register for parameter passing. unsigned VarArgsNumFPR; /// CRSpillFrameIndex - FrameIndex for CR spill slot for 32-bit SVR4. int CRSpillFrameIndex; /// If any of CR[2-4] need to be saved in the prologue and restored in the /// epilogue then they are added to this array. This is used for the /// 64-bit SVR4 ABI. SmallVector<unsigned, 3> MustSaveCRs; public: explicit PPCFunctionInfo(MachineFunction &MF) : FramePointerSaveIndex(0), ReturnAddrSaveIndex(0), BasePointerSaveIndex(0), HasSpills(false), HasNonRISpills(false), SpillsCR(false), SpillsVRSAVE(false), LRStoreRequired(false), MinReservedArea(0), TailCallSPDelta(0), HasFastCall(false), VarArgsFrameIndex(0), VarArgsStackOffset(0), VarArgsNumGPR(0), VarArgsNumFPR(0), CRSpillFrameIndex(0) {} int getFramePointerSaveIndex() const { return FramePointerSaveIndex; } void setFramePointerSaveIndex(int Idx) { FramePointerSaveIndex = Idx; } int getReturnAddrSaveIndex() const { return ReturnAddrSaveIndex; } void setReturnAddrSaveIndex(int idx) { ReturnAddrSaveIndex = idx; } int getBasePointerSaveIndex() const { return BasePointerSaveIndex; } void setBasePointerSaveIndex(int Idx) { BasePointerSaveIndex = Idx; } unsigned getMinReservedArea() const { return MinReservedArea; } void setMinReservedArea(unsigned size) { MinReservedArea = size; } int getTailCallSPDelta() const { return TailCallSPDelta; } void setTailCallSPDelta(int size) { TailCallSPDelta = size; } /// MustSaveLR - This is set when the prolog/epilog inserter does its initial /// scan of the function. It is true if the LR/LR8 register is ever explicitly /// defined/clobbered in the machine function (e.g. by calls and movpctolr, /// which is used in PIC generation), or if the LR stack slot is explicitly /// referenced by builtin_return_address. void setMustSaveLR(bool U) { MustSaveLR = U; } bool mustSaveLR() const { return MustSaveLR; } void setHasSpills() { HasSpills = true; } bool hasSpills() const { return HasSpills; } void setHasNonRISpills() { HasNonRISpills = true; } bool hasNonRISpills() const { return HasNonRISpills; } void setSpillsCR() { SpillsCR = true; } bool isCRSpilled() const { return SpillsCR; } void setSpillsVRSAVE() { SpillsVRSAVE = true; } bool isVRSAVESpilled() const { return SpillsVRSAVE; } void setLRStoreRequired() { LRStoreRequired = true; } bool isLRStoreRequired() const { return LRStoreRequired; } void setHasFastCall() { HasFastCall = true; } bool hasFastCall() const { return HasFastCall;} int getVarArgsFrameIndex() const { return VarArgsFrameIndex; } void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; } int getVarArgsStackOffset() const { return VarArgsStackOffset; } void setVarArgsStackOffset(int Offset) { VarArgsStackOffset = Offset; } unsigned getVarArgsNumGPR() const { return VarArgsNumGPR; } void setVarArgsNumGPR(unsigned Num) { VarArgsNumGPR = Num; } unsigned getVarArgsNumFPR() const { return VarArgsNumFPR; } void setVarArgsNumFPR(unsigned Num) { VarArgsNumFPR = Num; } int getCRSpillFrameIndex() const { return CRSpillFrameIndex; } void setCRSpillFrameIndex(int idx) { CRSpillFrameIndex = idx; } const SmallVectorImpl<unsigned> & getMustSaveCRs() const { return MustSaveCRs; } void addMustSaveCR(unsigned Reg) { MustSaveCRs.push_back(Reg); } }; } // end of namespace llvm #endif