1//===-- XCoreFrameLowering.h - Frame info for XCore Target ------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file contains XCore frame information that doesn't fit anywhere else
10// cleanly...
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_LIB_TARGET_XCORE_XCOREFRAMELOWERING_H
15#define LLVM_LIB_TARGET_XCORE_XCOREFRAMELOWERING_H
16
17#include "llvm/CodeGen/TargetFrameLowering.h"
18#include "llvm/Target/TargetMachine.h"
19
20namespace llvm {
21  class XCoreSubtarget;
22
23  class XCoreFrameLowering: public TargetFrameLowering {
24  public:
25    XCoreFrameLowering(const XCoreSubtarget &STI);
26
27    /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
28    /// the function.
29    void emitPrologue(MachineFunction &MF,
30                      MachineBasicBlock &MBB) const override;
31    void emitEpilogue(MachineFunction &MF,
32                      MachineBasicBlock &MBB) const override;
33
34    bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
35                                  MachineBasicBlock::iterator MI,
36                                  const std::vector<CalleeSavedInfo> &CSI,
37                                  const TargetRegisterInfo *TRI) const override;
38    bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
39                                  MachineBasicBlock::iterator MI,
40                                  std::vector<CalleeSavedInfo> &CSI,
41                                  const TargetRegisterInfo *TRI) const override;
42
43    MachineBasicBlock::iterator
44    eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
45                                  MachineBasicBlock::iterator I) const override;
46
47    bool hasFP(const MachineFunction &MF) const override;
48
49    void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
50                              RegScavenger *RS = nullptr) const override;
51
52    void processFunctionBeforeFrameFinalized(MachineFunction &MF,
53                                     RegScavenger *RS = nullptr) const override;
54
55    //! Stack slot size (4 bytes)
56    static int stackSlotSize() {
57      return 4;
58    }
59  };
60}
61
62#endif
63