X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FX86%2FX86RegisterInfo.h;h=fb1768214e930ecd50fe7b4ad6ebe80190ba0e8b;hb=22abf7e17f47f26691fdf4c590ebd88ebf560c73;hp=f281a3cf8e380d487ada651ad30d2927c65016ad;hpb=b9c2fd964ee7dd7823ac71db8443055e4d0f1c15;p=oota-llvm.git diff --git a/lib/Target/X86/X86RegisterInfo.h b/lib/Target/X86/X86RegisterInfo.h index f281a3cf8e3..fb1768214e9 100644 --- a/lib/Target/X86/X86RegisterInfo.h +++ b/lib/Target/X86/X86RegisterInfo.h @@ -1,4 +1,4 @@ -//===- X86RegisterInfo.h - X86 Register Information Impl --------*- C++ -*-===// +//===-- X86RegisterInfo.h - X86 Register Information Impl -------*- C++ -*-===// // // The LLVM Compiler Infrastructure // @@ -15,42 +15,18 @@ #define X86REGISTERINFO_H #include "llvm/Target/TargetRegisterInfo.h" -#include "X86GenRegisterInfo.h.inc" + +#define GET_REGINFO_HEADER +#include "X86GenRegisterInfo.inc" namespace llvm { class Type; class TargetInstrInfo; class X86TargetMachine; -/// N86 namespace - Native X86 register numbers -/// -namespace N86 { - enum { - EAX = 0, ECX = 1, EDX = 2, EBX = 3, ESP = 4, EBP = 5, ESI = 6, EDI = 7 - }; -} - -namespace X86 { - /// SubregIndex - The index of various sized subregister classes. Note that - /// these indices must be kept in sync with the class indices in the - /// X86RegisterInfo.td file. - enum SubregIndex { - SUBREG_8BIT = 1, SUBREG_8BIT_HI = 2, SUBREG_16BIT = 3, SUBREG_32BIT = 4 - }; -} - -/// DWARFFlavour - Flavour of dwarf regnumbers -/// -namespace DWARFFlavour { - enum { - X86_64 = 0, X86_32_DarwinEH = 1, X86_32_Generic = 2 - }; -} - class X86RegisterInfo : public X86GenRegisterInfo { public: X86TargetMachine &TM; - const TargetInstrInfo &TII; private: /// Is64Bit - Is the target 64-bits. @@ -65,10 +41,6 @@ private: /// unsigned SlotSize; - /// StackAlign - Default stack alignment. - /// - unsigned StackAlign; - /// StackPtr - X86 physical register used as stack ptr. /// unsigned StackPtr; @@ -77,21 +49,24 @@ private: /// unsigned FramePtr; -public: - X86RegisterInfo(X86TargetMachine &tm, const TargetInstrInfo &tii); + /// BasePtr - X86 physical register used as a base ptr in complex stack + /// frames. I.e., when we need a 3rd base, not just SP and FP, due to + /// variable size stack objects. + unsigned BasePtr; - /// getX86RegNum - Returns the native X86 register number for the given LLVM - /// register identifier. - static unsigned getX86RegNum(unsigned RegNo); +public: + X86RegisterInfo(X86TargetMachine &tm); - unsigned getStackAlignment() const { return StackAlign; } + // FIXME: This should be tablegen'd like getDwarfRegNum is + int getSEHRegNum(unsigned i) const; - /// getDwarfRegNum - allows modification of X86GenRegisterInfo::getDwarfRegNum - /// (created by TableGen) for target dependencies. - int getDwarfRegNum(unsigned RegNum, bool isEH) const; + /// getCompactUnwindRegNum - This function maps the register to the number for + /// compact unwind encoding. Return -1 if the register isn't valid. + int getCompactUnwindRegNum(unsigned RegNum, bool isEH) const; /// Code Generation virtual methods... - /// + /// + virtual bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const; /// getMatchingSuperRegClass - Return a subclass of the specified register /// class A so that each register in it has a sub-register of the @@ -100,9 +75,16 @@ public: getMatchingSuperRegClass(const TargetRegisterClass *A, const TargetRegisterClass *B, unsigned Idx) const; + virtual const TargetRegisterClass * + getSubClassWithSubReg(const TargetRegisterClass *RC, unsigned Idx) const; + + const TargetRegisterClass* + getLargestLegalSuperClass(const TargetRegisterClass *RC) const; + /// getPointerRegClass - Returns a TargetRegisterClass used for pointer /// values. - const TargetRegisterClass *getPointerRegClass(unsigned Kind = 0) const; + const TargetRegisterClass * + getPointerRegClass(const MachineFunction &MF, unsigned Kind = 0) const; /// getCrossCopyRegClass - Returns a legal register class to copy a register /// in the specified class to or from. Returns NULL if it is possible to copy @@ -110,15 +92,14 @@ public: const TargetRegisterClass * getCrossCopyRegClass(const TargetRegisterClass *RC) const; + unsigned getRegPressureLimit(const TargetRegisterClass *RC, + MachineFunction &MF) const; + /// getCalleeSavedRegs - Return a null-terminated list of all of the /// callee-save registers on this target. - const unsigned *getCalleeSavedRegs(const MachineFunction* MF = 0) const; - - /// getCalleeSavedRegClasses - Return a null-terminated list of the preferred - /// register classes to spill each callee-saved register with. The order and - /// length of this list match the getCalleeSavedRegs() list. - const TargetRegisterClass* const* - getCalleeSavedRegClasses(const MachineFunction *MF = 0) const; + const uint16_t *getCalleeSavedRegs(const MachineFunction* MF = 0) const; + const uint32_t *getCallPreservedMask(CallingConv::ID) const; + const uint32_t *getNoPreservedMask() const; /// getReservedRegs - Returns a bitset indexed by physical register number /// indicating if a register is a special register that has particular uses and @@ -126,36 +107,25 @@ public: /// register scavenger to determine what registers are free. BitVector getReservedRegs(const MachineFunction &MF) const; - bool hasFP(const MachineFunction &MF) const; + bool hasBasePointer(const MachineFunction &MF) const; - bool needsStackRealignment(const MachineFunction &MF) const; + bool canRealignStack(const MachineFunction &MF) const; - bool hasReservedCallFrame(MachineFunction &MF) const; + bool needsStackRealignment(const MachineFunction &MF) const; - bool hasReservedSpillSlot(MachineFunction &MF, unsigned Reg, + bool hasReservedSpillSlot(const MachineFunction &MF, unsigned Reg, int &FrameIdx) const; - void eliminateCallFramePseudoInstr(MachineFunction &MF, - MachineBasicBlock &MBB, - MachineBasicBlock::iterator MI) const; - - unsigned eliminateFrameIndex(MachineBasicBlock::iterator MI, - int SPAdj, int *Value = NULL, - RegScavenger *RS = NULL) const; - - void processFunctionBeforeCalleeSavedScan(MachineFunction &MF, - RegScavenger *RS = NULL) const; - - void emitCalleeSavedFrameMoves(MachineFunction &MF, unsigned LabelId, - unsigned FramePtr) const; - void emitPrologue(MachineFunction &MF) const; - void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const; + void eliminateFrameIndex(MachineBasicBlock::iterator MI, + int SPAdj, unsigned FIOperandNum, + RegScavenger *RS = NULL) const; // Debug information queries. - unsigned getRARegister() const; unsigned getFrameRegister(const MachineFunction &MF) const; - int getFrameIndexOffset(MachineFunction &MF, int FI) const; - void getInitialFrameState(std::vector &Moves) const; + unsigned getStackRegister() const { return StackPtr; } + unsigned getBaseRegister() const { return BasePtr; } + // FIXME: Move to FrameInfok + unsigned getSlotSize() const { return SlotSize; } // Exception handling queries. unsigned getEHExceptionRegister() const; @@ -164,8 +134,11 @@ public: // getX86SubSuperRegister - X86 utility function. It returns the sub or super // register of a specific X86 register. -// e.g. getX86SubSuperRegister(X86::EAX, EVT::i16) return X86:AX -unsigned getX86SubSuperRegister(unsigned, EVT, bool High=false); +// e.g. getX86SubSuperRegister(X86::EAX, MVT::i16) return X86:AX +unsigned getX86SubSuperRegister(unsigned, MVT::SimpleValueType, bool High=false); + +//get512BitRegister - X86 utility - returns 512-bit super register +unsigned get512BitSuperRegister(unsigned Reg); } // End llvm namespace