#define X86REGISTERINFO_H
#include "llvm/Target/MRegisterInfo.h"
-
-class llvm::Type;
-
#include "X86GenRegisterInfo.h.inc"
namespace llvm {
+ class Type;
+ class TargetInstrInfo;
+ class X86TargetMachine;
+
+class X86RegisterInfo : public X86GenRegisterInfo {
+public:
+ X86TargetMachine &TM;
+ const TargetInstrInfo &TII;
+
+private:
+ /// Is64Bit - Is the target 64-bits.
+ bool Is64Bit;
+
+ /// SlotSize - Stack slot size in bytes.
+ unsigned SlotSize;
-struct X86RegisterInfo : public X86GenRegisterInfo {
- X86RegisterInfo();
+ /// StackPtr - X86 physical register used as stack ptr.
+ unsigned StackPtr;
+
+ /// FramePtr - X86 physical register used as frame ptr.
+ unsigned FramePtr;
+
+public:
+ X86RegisterInfo(X86TargetMachine &tm, const TargetInstrInfo &tii);
/// Code Generation virtual methods...
void storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *RC) const;
+
+ void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
+ unsigned DestReg, const MachineInstr *Orig) const;
/// foldMemoryOperand - If this target supports it, fold a load or store of
/// the specified stack slot into the specified machine instruction for the
unsigned OpNum,
int FrameIndex) const;
- /// getCalleeSaveRegs - Return a null-terminated list of all of the
+ /// getCalleeSavedRegs - Return a null-terminated list of all of the
/// callee-save registers on this target.
- const unsigned *getCalleeSaveRegs() const;
+ const unsigned *getCalleeSavedRegs() const;
- /// getCalleeSaveRegClasses - Return a null-terminated list of the preferred
+ /// 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 getCalleeSaveRegs() list.
- const TargetRegisterClass* const* getCalleeSaveRegClasses() const;
+ /// length of this list match the getCalleeSavedRegs() list.
+ const TargetRegisterClass* const* getCalleeSavedRegClasses() const;
+
+ /// getReservedRegs - Returns a bitset indexed by physical register number
+ /// indicating if a register is a special register that has particular uses and
+ /// should be considered unavailable at all times, e.g. SP, RA. This is used by
+ /// register scavenger to determine what registers are free.
+ BitVector getReservedRegs(const MachineFunction &MF) const;
+
+ bool hasFP(const MachineFunction &MF) const;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI) const;
- void eliminateFrameIndex(MachineBasicBlock::iterator MI) const;
+ void eliminateFrameIndex(MachineBasicBlock::iterator MI,
+ int SPAdj, RegScavenger *RS = NULL) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
// Debug information queries.
unsigned getRARegister() const;
unsigned getFrameRegister(MachineFunction &MF) const;
+ void getInitialFrameState(std::vector<MachineMove> &Moves) const;
+
+ // Exception handling queries.
+ unsigned getEHExceptionRegister() const;
+ unsigned getEHHandlerRegister() const;
};
// getX86SubSuperRegister - X86 utility function. It returns the sub or super