SystemZMachineFunctionInfo.h revision b21ab43cfc3fa0dacf5c95f04e58b6d804b59a16 
1//==- SystemZMachineFuctionInfo.h - SystemZ machine function info -*- 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#ifndef SYSTEMZMACHINEFUNCTIONINFO_H
11#define SYSTEMZMACHINEFUNCTIONINFO_H
12
13#include "llvm/CodeGen/MachineFunction.h"
14
15namespace llvm {
16
17class SystemZMachineFunctionInfo : public MachineFunctionInfo {
18  unsigned LowSavedGPR;
19  unsigned HighSavedGPR;
20  unsigned VarArgsFirstGPR;
21  unsigned VarArgsFirstFPR;
22  unsigned VarArgsFrameIndex;
23  unsigned RegSaveFrameIndex;
24  bool ManipulatesSP;
25
26public:
27  explicit SystemZMachineFunctionInfo(MachineFunction &MF)
28    : LowSavedGPR(0), HighSavedGPR(0), VarArgsFirstGPR(0), VarArgsFirstFPR(0),
29      VarArgsFrameIndex(0), RegSaveFrameIndex(0), ManipulatesSP(false) {}
30
31  // Get and set the first call-saved GPR that should be saved and restored
32  // by this function.  This is 0 if no GPRs need to be saved or restored.
33  unsigned getLowSavedGPR() const { return LowSavedGPR; }
34  void setLowSavedGPR(unsigned Reg) { LowSavedGPR = Reg; }
35
36  // Get and set the last call-saved GPR that should be saved and restored
37  // by this function.
38  unsigned getHighSavedGPR() const { return HighSavedGPR; }
39  void setHighSavedGPR(unsigned Reg) { HighSavedGPR = Reg; }
40
41  // Get and set the number of fixed (as opposed to variable) arguments
42  // that are passed in GPRs to this function.
43  unsigned getVarArgsFirstGPR() const { return VarArgsFirstGPR; }
44  void setVarArgsFirstGPR(unsigned GPR) { VarArgsFirstGPR = GPR; }
45
46  // Likewise FPRs.
47  unsigned getVarArgsFirstFPR() const { return VarArgsFirstFPR; }
48  void setVarArgsFirstFPR(unsigned FPR) { VarArgsFirstFPR = FPR; }
49
50  // Get and set the frame index of the first stack vararg.
51  unsigned getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
52  void setVarArgsFrameIndex(unsigned FI) { VarArgsFrameIndex = FI; }
53
54  // Get and set the frame index of the register save area
55  // (i.e. the incoming stack pointer).
56  unsigned getRegSaveFrameIndex() const { return RegSaveFrameIndex; }
57  void setRegSaveFrameIndex(unsigned FI) { RegSaveFrameIndex = FI; }
58
59  // Get and set whether the function directly manipulates the stack pointer,
60  // e.g. through STACKSAVE or STACKRESTORE.
61  bool getManipulatesSP() const { return ManipulatesSP; }
62  void setManipulatesSP(bool MSP) { ManipulatesSP = MSP; }
63};
64
65} // end llvm namespace
66
67#endif
68