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  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) const;
31    void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
32
33    bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
34                                   MachineBasicBlock::iterator MI,
35                                   const std::vector<CalleeSavedInfo> &CSI,
36                                   const TargetRegisterInfo *TRI) const;
37    bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
38                                     MachineBasicBlock::iterator MI,
39                                     const std::vector<CalleeSavedInfo> &CSI,
40                                     const TargetRegisterInfo *TRI) const;
41
42    void eliminateCallFramePseudoInstr(MachineFunction &MF,
43                                       MachineBasicBlock &MBB,
44                                       MachineBasicBlock::iterator I) const;
45
46    bool hasFP(const MachineFunction &MF) const;
47
48    void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
49                                              RegScavenger *RS = NULL) const;
50
51    //! Stack slot size (4 bytes)
52    static int stackSlotSize() {
53      return 4;
54    }
55  };
56}
57
58#endif // XCOREFRAMEINFO_H
59