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 
21 namespace 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 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                                   const std::vector<CalleeSavedInfo> &CSI,
41                                   const TargetRegisterInfo *TRI) const override;
42 
43     void eliminateCallFramePseudoInstr(MachineFunction &MF,
44                                   MachineBasicBlock &MBB,
45                                   MachineBasicBlock::iterator I) const override;
46 
47     bool hasFP(const MachineFunction &MF) const override;
48 
49     void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
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)
stackSlotSize()56     static int stackSlotSize() {
57       return 4;
58     }
59   };
60 }
61 
62 #endif
63