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,
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     void eliminateCallFramePseudoInstr(MachineFunction &MF,
45                                   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)
stackSlotSize()57     static int stackSlotSize() {
58       return 4;
59     }
60   };
61 }
62 
63 #endif
64