Add a TRI::getLargestLegalSuperClass hook to provide an upper limit on register class...

[oota-llvm.git] / lib / Target / X86 / X86RegisterInfo.h

diff --git a/lib/Target/X86/X86RegisterInfo.h b/lib/Target/X86/X86RegisterInfo.h
index d0b82e2f1ce10462cc75adb15deaaadead1809a2..9970c52c3e724592d9089c9061ab559e3198bd42 100644 (file)
--- a/lib/Target/X86/X86RegisterInfo.h
+++ b/lib/Target/X86/X86RegisterInfo.h
@@ -91,6 +91,9 @@ public:
   getMatchingSuperRegClass(const TargetRegisterClass *A,
                            const TargetRegisterClass *B, 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;
@@ -101,54 +104,39 @@ 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;
-
   /// 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;
-
   bool canRealignStack(const MachineFunction &MF) const;
 
   bool needsStackRealignment(const MachineFunction &MF) const;
 
-  bool hasReservedCallFrame(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, FrameIndexValue *Value = NULL,
-                               RegScavenger *RS = NULL) const;
-
-  void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
-                                            RegScavenger *RS = NULL) const;
-
-  void emitCalleeSavedFrameMoves(MachineFunction &MF, MCSymbol *Label,
-                                 unsigned FramePtr) const;
-  void emitPrologue(MachineFunction &MF) const;
-  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
+  void eliminateFrameIndex(MachineBasicBlock::iterator MI,
+                           int SPAdj, RegScavenger *RS = NULL) const;
 
   // Debug information queries.
   unsigned getRARegister() const;
   unsigned getFrameRegister(const MachineFunction &MF) const;
-  int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
-  void getInitialFrameState(std::vector<MachineMove> &Moves) const;
+  unsigned getStackRegister() const { return StackPtr; }
+  // FIXME: Move to FrameInfok
+  unsigned getSlotSize() const { return SlotSize; }
 
   // Exception handling queries.
   unsigned getEHExceptionRegister() const;