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  virtual void anchor();
19  unsigned LowSavedGPR;
20  unsigned HighSavedGPR;
21  unsigned VarArgsFirstGPR;
22  unsigned VarArgsFirstFPR;
23  unsigned VarArgsFrameIndex;
24  unsigned RegSaveFrameIndex;
25  bool ManipulatesSP;
26
27public:
28  explicit SystemZMachineFunctionInfo(MachineFunction &MF)
29    : LowSavedGPR(0), HighSavedGPR(0), VarArgsFirstGPR(0), VarArgsFirstFPR(0),
30      VarArgsFrameIndex(0), RegSaveFrameIndex(0), ManipulatesSP(false) {}
31
32  // Get and set the first call-saved GPR that should be saved and restored
33  // by this function.  This is 0 if no GPRs need to be saved or restored.
34  unsigned getLowSavedGPR() const { return LowSavedGPR; }
35  void setLowSavedGPR(unsigned Reg) { LowSavedGPR = Reg; }
36
37  // Get and set the last call-saved GPR that should be saved and restored
38  // by this function.
39  unsigned getHighSavedGPR() const { return HighSavedGPR; }
40  void setHighSavedGPR(unsigned Reg) { HighSavedGPR = Reg; }
41
42  // Get and set the number of fixed (as opposed to variable) arguments
43  // that are passed in GPRs to this function.
44  unsigned getVarArgsFirstGPR() const { return VarArgsFirstGPR; }
45  void setVarArgsFirstGPR(unsigned GPR) { VarArgsFirstGPR = GPR; }
46
47  // Likewise FPRs.
48  unsigned getVarArgsFirstFPR() const { return VarArgsFirstFPR; }
49  void setVarArgsFirstFPR(unsigned FPR) { VarArgsFirstFPR = FPR; }
50
51  // Get and set the frame index of the first stack vararg.
52  unsigned getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
53  void setVarArgsFrameIndex(unsigned FI) { VarArgsFrameIndex = FI; }
54
55  // Get and set the frame index of the register save area
56  // (i.e. the incoming stack pointer).
57  unsigned getRegSaveFrameIndex() const { return RegSaveFrameIndex; }
58  void setRegSaveFrameIndex(unsigned FI) { RegSaveFrameIndex = FI; }
59
60  // Get and set whether the function directly manipulates the stack pointer,
61  // e.g. through STACKSAVE or STACKRESTORE.
62  bool getManipulatesSP() const { return ManipulatesSP; }
63  void setManipulatesSP(bool MSP) { ManipulatesSP = MSP; }
64};
65
66} // end namespace llvm
67
68#endif
69