1 files changed, 75 insertions, 0 deletions
diff --git a/lib/Target/ARM64/ARM64FrameLowering.h b/lib/Target/ARM64/ARM64FrameLowering.h
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+++ b/lib/Target/ARM64/ARM64FrameLowering.h
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+//===-- ARM64FrameLowering.h - TargetFrameLowering for ARM64 ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ARM64_FRAMELOWERING_H
+#define ARM64_FRAMELOWERING_H
+
+#include "llvm/Target/TargetFrameLowering.h"
+
+namespace llvm {
+
+class ARM64Subtarget;
+class ARM64TargetMachine;
+
+class ARM64FrameLowering : public TargetFrameLowering {
+  const ARM64TargetMachine &TM;
+
+public:
+  explicit ARM64FrameLowering(const ARM64TargetMachine &TM,
+                              const ARM64Subtarget &STI)
+      : TargetFrameLowering(StackGrowsDown, 16, 0, 16,
+                            false /*StackRealignable*/),
+        TM(TM) {}
+
+  void emitCalleeSavedFrameMoves(MachineBasicBlock &MBB,
+                                 MachineBasicBlock::iterator MBBI,
+                                 unsigned FramePtr) const;
+
+  void eliminateCallFramePseudoInstr(MachineFunction &MF,
+                                     MachineBasicBlock &MBB,
+                                     MachineBasicBlock::iterator I) const;
+
+  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
+  /// the function.
+  void emitPrologue(MachineFunction &MF) const;
+  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
+
+  int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
+  int getFrameIndexReference(const MachineFunction &MF, int FI,
+                             unsigned &FrameReg) const;
+  int resolveFrameIndexReference(const MachineFunction &MF, int FI,
+                                 unsigned &FrameReg,
+                                 bool PreferFP = false) const;
+  bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
+                                 MachineBasicBlock::iterator MI,
+                                 const std::vector<CalleeSavedInfo> &CSI,
+                                 const TargetRegisterInfo *TRI) const;
+
+  bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
+                                   MachineBasicBlock::iterator MI,
+                                   const std::vector<CalleeSavedInfo> &CSI,
+                                   const TargetRegisterInfo *TRI) const;
+
+  /// \brief Can this function use the red zone for local allocations.
+  bool canUseRedZone(const MachineFunction &MF) const;
+
+  bool hasFP(const MachineFunction &MF) const;
+  bool hasReservedCallFrame(const MachineFunction &MF) const;
+
+  void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
+                                            RegScavenger *RS) const;
+};
+
+} // End llvm namespace
+
+#endif