1 files changed, 79 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/AArch64/AArch64FrameLowering.h b/contrib/llvm/lib/Target/AArch64/AArch64FrameLowering.h
new file mode 100644
index 000000000000..55a256867fab
--- /dev/null
+++ b/contrib/llvm/lib/Target/AArch64/AArch64FrameLowering.h
@@ -0,0 +1,79 @@
+//==-- AArch64FrameLowering.h - TargetFrameLowering for AArch64 --*- C++ -*-==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_AARCH64_AARCH64FRAMELOWERING_H
+#define LLVM_LIB_TARGET_AARCH64_AARCH64FRAMELOWERING_H
+
+#include "llvm/CodeGen/TargetFrameLowering.h"
+
+namespace llvm {
+
+class AArch64FrameLowering : public TargetFrameLowering {
+public:
+  explicit AArch64FrameLowering()
+      : TargetFrameLowering(StackGrowsDown, 16, 0, 16,
+                            true /*StackRealignable*/) {}
+
+  void emitCalleeSavedFrameMoves(MachineBasicBlock &MBB,
+                                 MachineBasicBlock::iterator MBBI) const;
+
+  MachineBasicBlock::iterator
+  eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
+                                MachineBasicBlock::iterator I) const override;
+
+  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
+  /// the function.
+  void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
+  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
+
+  bool canUseAsPrologue(const MachineBasicBlock &MBB) const override;
+
+  int getFrameIndexReference(const MachineFunction &MF, int FI,
+                             unsigned &FrameReg) const override;
+  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 override;
+
+  bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
+                                  MachineBasicBlock::iterator MI,
+                                  std::vector<CalleeSavedInfo> &CSI,
+                                  const TargetRegisterInfo *TRI) const override;
+
+  /// \brief Can this function use the red zone for local allocations.
+  bool canUseRedZone(const MachineFunction &MF) const;
+
+  bool hasFP(const MachineFunction &MF) const override;
+  bool hasReservedCallFrame(const MachineFunction &MF) const override;
+
+  void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
+                            RegScavenger *RS) const override;
+
+  /// Returns true if the target will correctly handle shrink wrapping.
+  bool enableShrinkWrapping(const MachineFunction &MF) const override {
+    return true;
+  }
+
+  bool enableStackSlotScavenging(const MachineFunction &MF) const override;
+
+private:
+  bool shouldCombineCSRLocalStackBump(MachineFunction &MF,
+                                      unsigned StackBumpBytes) const;
+};
+
+} // End llvm namespace
+
+#endif