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Diffstat (limited to 'contrib/llvm/lib/Target/PowerPC/PPCMachineFunctionInfo.h')
-rw-r--r-- | contrib/llvm/lib/Target/PowerPC/PPCMachineFunctionInfo.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/PowerPC/PPCMachineFunctionInfo.h b/contrib/llvm/lib/Target/PowerPC/PPCMachineFunctionInfo.h new file mode 100644 index 000000000000..33f843dfb432 --- /dev/null +++ b/contrib/llvm/lib/Target/PowerPC/PPCMachineFunctionInfo.h @@ -0,0 +1,178 @@ +//===-- 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 |