Imported Upstream version 5.18.0.161

Former-commit-id: 4db48158d3a35497b8f118ab21b5f08ac3d86d98

external/llvm/lib/Target/Nios2/Nios2FrameLowering.h

@@ -0,0 +1,39 @@
+//===-- Nios2FrameLowering.h - Define frame lowering for Nios2 --*- 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_NIOS2_NIOS2FRAMELOWERING_H
+#define LLVM_LIB_TARGET_NIOS2_NIOS2FRAMELOWERING_H
+
+#include "Nios2.h"
+#include "llvm/CodeGen/TargetFrameLowering.h"
+
+namespace llvm {
+class Nios2Subtarget;
+
+class Nios2FrameLowering : public TargetFrameLowering {
+protected:
+  const Nios2Subtarget &STI;
+
+public:
+  explicit Nios2FrameLowering(const Nios2Subtarget &sti)
+      : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 4, 0, 4),
+        STI(sti) {}
+
+  bool hasFP(const MachineFunction &MF) 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;
+};
+} // namespace llvm
+
+#endif