1 files changed, 39 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Target/BPF/BPFFrameLowering.cpp b/contrib/llvm-project/llvm/lib/Target/BPF/BPFFrameLowering.cpp
new file mode 100644
index 000000000000..8812cfdd86da
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/Target/BPF/BPFFrameLowering.cpp
@@ -0,0 +1,39 @@
+//===-- BPFFrameLowering.cpp - BPF Frame Information ----------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the BPF implementation of TargetFrameLowering class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "BPFFrameLowering.h"
+#include "BPFInstrInfo.h"
+#include "BPFSubtarget.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
+
+using namespace llvm;
+
+bool BPFFrameLowering::hasFP(const MachineFunction &MF) const { return true; }
+
+void BPFFrameLowering::emitPrologue(MachineFunction &MF,
+                                    MachineBasicBlock &MBB) const {}
+
+void BPFFrameLowering::emitEpilogue(MachineFunction &MF,
+                                    MachineBasicBlock &MBB) const {}
+
+void BPFFrameLowering::determineCalleeSaves(MachineFunction &MF,
+                                            BitVector &SavedRegs,
+                                            RegScavenger *RS) const {
+  TargetFrameLowering::determineCalleeSaves(MF, SavedRegs, RS);
+  SavedRegs.reset(BPF::R6);
+  SavedRegs.reset(BPF::R7);
+  SavedRegs.reset(BPF::R8);
+  SavedRegs.reset(BPF::R9);
+}