implement some more easy hooks.

[oota-llvm.git] / lib / Target / ARM / ARMBaseRegisterInfo.h

diff --git a/lib/Target/ARM/ARMBaseRegisterInfo.h b/lib/Target/ARM/ARMBaseRegisterInfo.h
index 59725fe56a12dd747fe3a4366decd56e3144dace..f7d38e540def63908e7a93e7e2dc74a8c4654011 100644 (file)
--- a/lib/Target/ARM/ARMBaseRegisterInfo.h
+++ b/lib/Target/ARM/ARMBaseRegisterInfo.h
@@ -1,4 +1,4 @@
-//===- ARMBaseRegisterInfo.h - ARM Register Information Impl --------*- C++ -*-===//
+//===- ARMBaseRegisterInfo.h - ARM Register Information Impl ----*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -74,7 +74,7 @@ public:
 
   BitVector getReservedRegs(const MachineFunction &MF) const;
 
-  const TargetRegisterClass *getPointerRegClass() const;
+  const TargetRegisterClass *getPointerRegClass(unsigned Kind = 0) const;
 
   std::pair<TargetRegisterClass::iterator,TargetRegisterClass::iterator>
   getAllocationOrder(const TargetRegisterClass *RC,
@@ -89,6 +89,8 @@ public:
 
   bool hasFP(const MachineFunction &MF) const;
 
+  bool cannotEliminateFrame(const MachineFunction &MF) const;
+
   void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
                                             RegScavenger *RS = NULL) const;
 
@@ -120,35 +122,24 @@ public:
 
   virtual bool requiresRegisterScavenging(const MachineFunction &MF) const;
 
+  virtual bool requiresFrameIndexScavenging(const MachineFunction &MF) const;
+
   virtual bool hasReservedCallFrame(MachineFunction &MF) const;
 
   virtual void eliminateCallFramePseudoInstr(MachineFunction &MF,
                                              MachineBasicBlock &MBB,
                                              MachineBasicBlock::iterator I) const;
 
-  // rewrite MI to access 'Offset' bytes from the FP. Return the offset that
-  // could not be handled directly in MI.
-  virtual int
-  rewriteFrameIndex(MachineInstr &MI, unsigned FrameRegIdx,
-                    unsigned MOVOpc, unsigned ADDriOpc, unsigned SUBriOpc,
-                    unsigned FrameReg, int Offset) const;
-
-  virtual void
-  eliminateFrameIndex(MachineBasicBlock::iterator II,
-                      int SPAdj, RegScavenger *RS = NULL) const {
-    eliminateFrameIndexImpl(II, ARM::MOVr, ARM::ADDri, ARM::SUBri, SPAdj, RS);
-  }
+  virtual unsigned eliminateFrameIndex(MachineBasicBlock::iterator II,
+                                       int SPAdj, int *Value = NULL,
+                                       RegScavenger *RS = NULL) const;
 
   virtual void emitPrologue(MachineFunction &MF) const;
   virtual void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
 
-protected:
-  void
-  eliminateFrameIndexImpl(MachineBasicBlock::iterator II,
-                          unsigned MOVOpc, unsigned ADDriOpc, unsigned SUBriOpc,
-                          int SPAdj, RegScavenger *RS = NULL) const;
-
 private:
+  unsigned estimateRSStackSizeLimit(MachineFunction &MF) const;
+
   unsigned getRegisterPairEven(unsigned Reg, const MachineFunction &MF) const;
 
   unsigned getRegisterPairOdd(unsigned Reg, const MachineFunction &MF) const;