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 XCOREFRAMEINFO_H
16#define XCOREFRAMEINFO_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    const XCoreSubtarget &STI;
26  public:
27    XCoreFrameLowering(const XCoreSubtarget &STI);
28
29    /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
30    /// the function.
31    void emitPrologue(MachineFunction &MF) const;
32    void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
33
34    bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
35                                   MachineBasicBlock::iterator MI,
36                                   const std::vector<CalleeSavedInfo> &CSI,
37                                   const TargetRegisterInfo *TRI) const;
38    bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
39                                     MachineBasicBlock::iterator MI,
40                                     const std::vector<CalleeSavedInfo> &CSI,
41                                     const TargetRegisterInfo *TRI) const;
42
43    bool hasFP(const MachineFunction &MF) const;
44
45    void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
46                                              RegScavenger *RS = NULL) const;
47
48    void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
49
50    //! Stack slot size (4 bytes)
51    static int stackSlotSize() {
52      return 4;
53    }
54  };
55}
56
57#endif // XCOREFRAMEINFO_H
58