1//===-- XCoreFrameLowering.h - Frame info for XCore Target ------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file contains XCore frame information that doesn't fit anywhere else
11// cleanly...
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_LIB_TARGET_XCORE_XCOREFRAMELOWERING_H
16#define LLVM_LIB_TARGET_XCORE_XCOREFRAMELOWERING_H
17
18#include "llvm/Target/TargetFrameLowering.h"
19#include "llvm/Target/TargetMachine.h"
20
21namespace llvm {
22  class XCoreSubtarget;
23
24  class XCoreFrameLowering: public TargetFrameLowering {
25  public:
26    XCoreFrameLowering(const XCoreSubtarget &STI);
27
28    /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
29    /// the function.
30    void emitPrologue(MachineFunction &MF,
31                      MachineBasicBlock &MBB) const override;
32    void emitEpilogue(MachineFunction &MF,
33                      MachineBasicBlock &MBB) const override;
34
35    bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
36                                  MachineBasicBlock::iterator MI,
37                                  const std::vector<CalleeSavedInfo> &CSI,
38                                  const TargetRegisterInfo *TRI) const override;
39    bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
40                                  MachineBasicBlock::iterator MI,
41                                  const std::vector<CalleeSavedInfo> &CSI,
42                                  const TargetRegisterInfo *TRI) const override;
43
44    MachineBasicBlock::iterator
45    eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
46                                  MachineBasicBlock::iterator I) const override;
47
48    bool hasFP(const MachineFunction &MF) const override;
49
50    void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
51                              RegScavenger *RS = nullptr) const override;
52
53    void processFunctionBeforeFrameFinalized(MachineFunction &MF,
54                                     RegScavenger *RS = nullptr) const override;
55
56    //! Stack slot size (4 bytes)
57    static int stackSlotSize() {
58      return 4;
59    }
60  };
61}
62
63#endif
64