Remove redundant TargetFrameLowering::getFrameIndexOffset virtual

[oota-llvm.git] / lib / Target / SystemZ / SystemZFrameLowering.h

diff --git a/lib/Target/SystemZ/SystemZFrameLowering.h b/lib/Target/SystemZ/SystemZFrameLowering.h
index 5ca049c486cedb561ee0dd1eaa7ad078b3b5ce0f..46bb6b7a7573b1eb5f3d63a2f07bf314c31dd2c0 100644 (file)
--- a/lib/Target/SystemZ/SystemZFrameLowering.h
+++ b/lib/Target/SystemZ/SystemZFrameLowering.h
@@ -7,10 +7,9 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef SYSTEMZFRAMELOWERING_H
-#define SYSTEMZFRAMELOWERING_H
+#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZFRAMELOWERING_H
+#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZFRAMELOWERING_H
 
-#include "SystemZSubtarget.h"
 #include "llvm/ADT/IndexedMap.h"
 #include "llvm/Target/TargetFrameLowering.h"
 
@@ -21,67 +20,40 @@ class SystemZSubtarget;
 class SystemZFrameLowering : public TargetFrameLowering {
   IndexedMap<unsigned> RegSpillOffsets;
 
-protected:
-  const SystemZTargetMachine &TM;
-  const SystemZSubtarget &STI;
-
 public:
-  SystemZFrameLowering(const SystemZTargetMachine &tm,
-                       const SystemZSubtarget &sti);
-
-  // Override FrameLowering.
-  virtual void
-    processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
-                                         RegScavenger *RS) const LLVM_OVERRIDE;
-  virtual bool
-    spillCalleeSavedRegisters(MachineBasicBlock &MBB,
-                              MachineBasicBlock::iterator MBBI,
-                              const std::vector<CalleeSavedInfo> &CSI,
-                              const TargetRegisterInfo *TRI) const
-    LLVM_OVERRIDE;
-  virtual bool
-    restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
-                                MachineBasicBlock::iterator MBBII,
-                                const std::vector<CalleeSavedInfo> &CSI,
-                                const TargetRegisterInfo *TRI) const
-    LLVM_OVERRIDE;
-  virtual void emitPrologue(MachineFunction &MF) const LLVM_OVERRIDE;
-  virtual void emitEpilogue(MachineFunction &MF,
-                            MachineBasicBlock &MBB) const LLVM_OVERRIDE;
-  virtual bool hasFP(const MachineFunction &MF) const LLVM_OVERRIDE;
-  virtual int getFrameIndexOffset(const MachineFunction &MF,
-                                  int FI) const LLVM_OVERRIDE;
-  virtual bool hasReservedCallFrame(const MachineFunction &MF) const
-    LLVM_OVERRIDE;
-  virtual void
-  eliminateCallFramePseudoInstr(MachineFunction &MF,
-                                MachineBasicBlock &MBB,
-                                MachineBasicBlock::iterator MI) const
-    LLVM_OVERRIDE;
+  SystemZFrameLowering();
 
-  // The target-independent code automatically allocates save slots for
-  // call-saved GPRs.  However, we don't need those slots for SystemZ,
-  // because the ABI sets aside GPR save slots in the caller-allocated part
-  // of the frame.  Since the target-independent code puts this unneeded
-  // area at the top of the callee-allocated part of frame, we choose not
-  // to allocate it and adjust the offsets accordingly.  Return the
-  // size of this unallocated area.
-  // FIXME: seems a bit hackish.
-  uint64_t getUnallocatedTopBytes(const MachineFunction &MF) const;
+  // Override TargetFrameLowering.
+  bool isFPCloseToIncomingSP() const override { return false; }
+  const SpillSlot *getCalleeSavedSpillSlots(unsigned &NumEntries) const
+    override;
+  void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
+                            RegScavenger *RS) const override;
+  bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
+                                 MachineBasicBlock::iterator MBBI,
+                                 const std::vector<CalleeSavedInfo> &CSI,
+                                 const TargetRegisterInfo *TRI) const override;
+  bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
+                                   MachineBasicBlock::iterator MBBII,
+                                   const std::vector<CalleeSavedInfo> &CSI,
+                                   const TargetRegisterInfo *TRI) const
+    override;
+  void processFunctionBeforeFrameFinalized(MachineFunction &MF,
+                                           RegScavenger *RS) const override;
+  void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
+  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
+  bool hasFP(const MachineFunction &MF) const override;
+  int getFrameIndexReference(const MachineFunction &MF, int FI,
+                             unsigned &FrameReg) const override;
+  bool hasReservedCallFrame(const MachineFunction &MF) const override;
+  void eliminateCallFramePseudoInstr(MachineFunction &MF,
+                                     MachineBasicBlock &MBB,
+                                     MachineBasicBlock::iterator MI) const
+    override;
 
   // Return the number of bytes in the callee-allocated part of the frame.
   uint64_t getAllocatedStackSize(const MachineFunction &MF) const;
 
-  // Return the number of frame bytes that should be reserved for
-  // an emergency spill slot, for use by the register scaveneger.
-  // Return 0 if register scaveging won't be needed.
-  unsigned getEmergencySpillSlotSize(const MachineFunction &MF) const;
-
-  // Return the offset from the frame pointer of the emergency spill slot,
-  // which always fits within a 12-bit unsigned displacement field.
-  // Only valid if getEmergencySpillSlotSize(MF) returns nonzero.
-  unsigned getEmergencySpillSlotOffset(const MachineFunction &MF) const;
-
   // Return the byte offset from the incoming stack pointer of Reg's
   // ABI-defined save slot.  Return 0 if no slot is defined for Reg.
   unsigned getRegSpillOffset(unsigned Reg) const {