X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FMips%2FMipsMachineFunction.h;h=b05b348037d931abea026634d64b0fcd0fc1b64c;hb=bf7f7b5e0eae40bb47a410c90f9f0885c0f38b2c;hp=1e8e4feedd037f75036e48e692f84e82e22faa6e;hpb=4552c9a3b34ad9b2085635266348d0d9b95514a6;p=oota-llvm.git diff --git a/lib/Target/Mips/MipsMachineFunction.h b/lib/Target/Mips/MipsMachineFunction.h index 1e8e4feedd0..b05b348037d 100644 --- a/lib/Target/Mips/MipsMachineFunction.h +++ b/lib/Target/Mips/MipsMachineFunction.h @@ -14,62 +14,21 @@ #ifndef MIPS_MACHINE_FUNCTION_INFO_H #define MIPS_MACHINE_FUNCTION_INFO_H -#include "llvm/ADT/SmallVector.h" -#include "llvm/ADT/VectorExtras.h" -#include "llvm/CodeGen/MachineFunction.h" +#include "MipsSubtarget.h" #include "llvm/CodeGen/MachineFrameInfo.h" +#include "llvm/CodeGen/MachineFunction.h" +#include "llvm/Target/TargetFrameLowering.h" +#include "llvm/Target/TargetMachine.h" +#include namespace llvm { /// MipsFunctionInfo - This class is derived from MachineFunction private /// Mips target-specific information for each MachineFunction. class MipsFunctionInfo : public MachineFunctionInfo { + virtual void anchor(); -private: - /// Holds for each function where on the stack the Frame Pointer must be - /// saved. This is used on Prologue and Epilogue to emit FP save/restore - int FPStackOffset; - - /// Holds for each function where on the stack the Return Address must be - /// saved. This is used on Prologue and Epilogue to emit RA save/restore - int RAStackOffset; - - /// At each function entry, two special bitmask directives must be emitted - /// to help debugging, for CPU and FPU callee saved registers. Both need - /// the negative offset from the final stack size and its higher registers - /// location on the stack. - int CPUTopSavedRegOff; - int FPUTopSavedRegOff; - - /// MipsFIHolder - Holds a FrameIndex and it's Stack Pointer Offset - struct MipsFIHolder { - - int FI; - int SPOffset; - - MipsFIHolder(int FrameIndex, int StackPointerOffset) - : FI(FrameIndex), SPOffset(StackPointerOffset) {} - }; - - /// When PIC is used the GP must be saved on the stack on the function - /// prologue and must be reloaded from this stack location after every - /// call. A reference to its stack location and frame index must be kept - /// to be used on emitPrologue and processFunctionBeforeFrameFinalized. - MipsFIHolder GPHolder; - - /// On LowerFormalArguments the stack size is unknown, so the Stack - /// Pointer Offset calculation of "not in register arguments" must be - /// postponed to emitPrologue. - SmallVector FnLoadArgs; - bool HasLoadArgs; - - // When VarArgs, we must write registers back to caller stack, preserving - // on register arguments. Since the stack size is unknown on - // LowerFormalArguments, the Stack Pointer Offset calculation must be - // postponed to emitPrologue. - SmallVector FnStoreVarArgs; - bool HasStoreVarArgs; - + MachineFunction& MF; /// SRetReturnReg - Some subtargets require that sret lowering includes /// returning the value of the returned struct in a register. This field /// holds the virtual register into which the sret argument is passed. @@ -80,66 +39,59 @@ private: /// relocation models. unsigned GlobalBaseReg; + /// Mips16SPAliasReg - keeps track of the virtual register initialized for + /// use as an alias for SP for use in load/store of halfword/byte from/to + /// the stack + unsigned Mips16SPAliasReg; + /// VarArgsFrameIndex - FrameIndex for start of varargs area. int VarArgsFrameIndex; + /// True if function has a byval argument. + bool HasByvalArg; + + /// Size of incoming argument area. + unsigned IncomingArgSize; + + /// CallsEhReturn - Whether the function calls llvm.eh.return. + bool CallsEhReturn; + + /// Frame objects for spilling eh data registers. + int EhDataRegFI[4]; + public: MipsFunctionInfo(MachineFunction& MF) - : FPStackOffset(0), RAStackOffset(0), CPUTopSavedRegOff(0), - FPUTopSavedRegOff(0), GPHolder(-1,-1), HasLoadArgs(false), - HasStoreVarArgs(false), SRetReturnReg(0), GlobalBaseReg(0), - VarArgsFrameIndex(0) + : MF(MF), SRetReturnReg(0), GlobalBaseReg(0), Mips16SPAliasReg(0), + VarArgsFrameIndex(0), CallsEhReturn(false) {} - int getFPStackOffset() const { return FPStackOffset; } - void setFPStackOffset(int Off) { FPStackOffset = Off; } - - int getRAStackOffset() const { return RAStackOffset; } - void setRAStackOffset(int Off) { RAStackOffset = Off; } - - int getCPUTopSavedRegOff() const { return CPUTopSavedRegOff; } - void setCPUTopSavedRegOff(int Off) { CPUTopSavedRegOff = Off; } + unsigned getSRetReturnReg() const { return SRetReturnReg; } + void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; } - int getFPUTopSavedRegOff() const { return FPUTopSavedRegOff; } - void setFPUTopSavedRegOff(int Off) { FPUTopSavedRegOff = Off; } + bool globalBaseRegSet() const; + unsigned getGlobalBaseReg(); - int getGPStackOffset() const { return GPHolder.SPOffset; } - int getGPFI() const { return GPHolder.FI; } - void setGPStackOffset(int Off) { GPHolder.SPOffset = Off; } - void setGPFI(int FI) { GPHolder.FI = FI; } - bool needGPSaveRestore() const { return GPHolder.SPOffset != -1; } + bool mips16SPAliasRegSet() const; + unsigned getMips16SPAliasReg(); - bool hasLoadArgs() const { return HasLoadArgs; } - bool hasStoreVarArgs() const { return HasStoreVarArgs; } + int getVarArgsFrameIndex() const { return VarArgsFrameIndex; } + void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; } - void recordLoadArgsFI(int FI, int SPOffset) { - if (!HasLoadArgs) HasLoadArgs=true; - FnLoadArgs.push_back(MipsFIHolder(FI, SPOffset)); - } - void recordStoreVarArgsFI(int FI, int SPOffset) { - if (!HasStoreVarArgs) HasStoreVarArgs=true; - FnStoreVarArgs.push_back(MipsFIHolder(FI, SPOffset)); + bool hasByvalArg() const { return HasByvalArg; } + void setFormalArgInfo(unsigned Size, bool HasByval) { + IncomingArgSize = Size; + HasByvalArg = HasByval; } - void adjustLoadArgsFI(MachineFrameInfo *MFI) const { - if (!hasLoadArgs()) return; - for (unsigned i = 0, e = FnLoadArgs.size(); i != e; ++i) - MFI->setObjectOffset( FnLoadArgs[i].FI, FnLoadArgs[i].SPOffset ); - } - void adjustStoreVarArgsFI(MachineFrameInfo *MFI) const { - if (!hasStoreVarArgs()) return; - for (unsigned i = 0, e = FnStoreVarArgs.size(); i != e; ++i) - MFI->setObjectOffset( FnStoreVarArgs[i].FI, FnStoreVarArgs[i].SPOffset ); - } + unsigned getIncomingArgSize() const { return IncomingArgSize; } - unsigned getSRetReturnReg() const { return SRetReturnReg; } - void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; } + bool callsEhReturn() const { return CallsEhReturn; } + void setCallsEhReturn() { CallsEhReturn = true; } - unsigned getGlobalBaseReg() const { return GlobalBaseReg; } - void setGlobalBaseReg(unsigned Reg) { GlobalBaseReg = Reg; } + void createEhDataRegsFI(); + int getEhDataRegFI(unsigned Reg) const { return EhDataRegFI[Reg]; } + bool isEhDataRegFI(int FI) const; - int getVarArgsFrameIndex() const { return VarArgsFrameIndex; } - void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; } }; } // end of namespace llvm