//
// The LLVM Compiler Infrastructure
//
-// This file was developed by a team from the Computer Systems Research
-// Department at The Aerospace Corporation and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
-// This file contains the Cell SPU implementation of the MRegisterInfo class.
+// This file contains the Cell SPU implementation of the TargetRegisterInfo
+// class.
//
//===----------------------------------------------------------------------===//
*/
static unsigned getRegisterNumbering(unsigned RegEnum);
- //! Store a register to a stack slot, based on its register class.
- void storeRegToStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI,
- unsigned SrcReg, bool isKill, int FrameIndex,
- const TargetRegisterClass *RC) const;
-
- //! Store a register to an address, based on its register class
- void storeRegToAddr(MachineFunction &MF, unsigned SrcReg, bool isKill,
- SmallVectorImpl<MachineOperand> &Addr,
- const TargetRegisterClass *RC,
- SmallVectorImpl<MachineInstr*> &NewMIs) const;
-
- //! Load a register from a stack slot, based on its register class.
- void loadRegFromStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI,
- unsigned DestReg, int FrameIndex,
- const TargetRegisterClass *RC) const;
-
- //! Loqad a register from an address, based on its register class
- virtual void loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
- SmallVectorImpl<MachineOperand> &Addr,
- const TargetRegisterClass *RC,
- SmallVectorImpl<MachineInstr*> &NewMIs) const;
-
- //! Copy a register to another
- void copyRegToReg(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- unsigned DestReg, unsigned SrcReg,
- const TargetRegisterClass *DestRC,
- const TargetRegisterClass *SrcRC) const;
-
- void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
- unsigned DestReg, const MachineInstr *Orig) const;
-
- //! Fold spills into load/store instructions
- virtual MachineInstr* foldMemoryOperand(MachineInstr* MI, unsigned OpNum,
- int FrameIndex) const;
-
- //! Fold any load/store to an operand
- virtual MachineInstr* foldMemoryOperand(MachineInstr* MI, unsigned OpNum,
- MachineInstr* LoadMI) const;
-
+ /// getPointerRegClass - Return the register class to use to hold pointers.
+ /// This is used for addressing modes.
+ virtual const TargetRegisterClass *
+ getPointerRegClass(unsigned Kind = 0) const;
+
//! Return the array of callee-saved registers
virtual const unsigned* getCalleeSavedRegs(const MachineFunction *MF) const;
- //! Return the register class array of the callee-saved registers
- virtual const TargetRegisterClass* const *
- getCalleeSavedRegClasses(const MachineFunction *MF) const;
+ //! Allow for scavenging, so we can get scratch registers when needed.
+ virtual bool requiresRegisterScavenging(const MachineFunction &MF) const
+ { return true; }
//! Return the reserved registers
BitVector getReservedRegs(const MachineFunction &MF) const;
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const;
//! Convert frame indicies into machine operands
- void eliminateFrameIndex(MachineBasicBlock::iterator II, int,
- RegScavenger *RS) const;
+ unsigned eliminateFrameIndex(MachineBasicBlock::iterator II, int SPAdj,
+ FrameIndexValue *Value = NULL,
+ RegScavenger *RS = NULL) const;
//! Determine the frame's layour
void determineFrameLayout(MachineFunction &MF) const;
void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
- RegScavenger *RS = NULL) const;
+ RegScavenger *RS = NULL) const;
//! Emit the function prologue
void emitPrologue(MachineFunction &MF) const;
//! Emit the function epilogue
//! Get return address register (LR, aka R0)
unsigned getRARegister() const;
//! Get the stack frame register (SP, aka R1)
- unsigned getFrameRegister(MachineFunction &MF) const;
+ unsigned getFrameRegister(const MachineFunction &MF) const;
//! Perform target-specific stack frame setup.
void getInitialFrameState(std::vector<MachineMove> &Moves) const;
// New methods added:
//------------------------------------------------------------------------
- //! Return the array of argument passing registers
+ //! Get DWARF debugging register number
+ int getDwarfRegNum(unsigned RegNum, bool isEH) const;
+
+ //! Convert D-form load/store to X-form load/store
/*!
- \note The size of this array is returned by getArgRegsSize().
+ Converts a regiser displacement load/store into a register-indexed
+ load/store for large stack frames, when the stack frame exceeds the
+ range of a s10 displacement.
*/
- static const unsigned *getArgRegs();
+ int convertDFormToXForm(int dFormOpcode) const;
- //! Return the size of the argument passing register array
- static const unsigned getNumArgRegs();
-
- //! Get DWARF debugging register number
- int getDwarfRegNum(unsigned RegNum, bool isEH) const;
+ //! Acquire an unused register in an emergency.
+ unsigned findScratchRegister(MachineBasicBlock::iterator II,
+ RegScavenger *RS,
+ const TargetRegisterClass *RC,
+ int SPAdj) const;
+
};
} // end namespace llvm