LLVM  3.7.0
SystemZMachineFunctionInfo.h
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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 LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZMACHINEFUNCTIONINFO_H
11 #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZMACHINEFUNCTIONINFO_H
12 
14 
15 namespace llvm {
16 
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  unsigned NumLocalDynamics;
27 
28 public:
30  : LowSavedGPR(0), HighSavedGPR(0), VarArgsFirstGPR(0), VarArgsFirstFPR(0),
31  VarArgsFrameIndex(0), RegSaveFrameIndex(0), ManipulatesSP(false),
32  NumLocalDynamics(0) {}
33 
34  // Get and set the first call-saved GPR that should be saved and restored
35  // by this function. This is 0 if no GPRs need to be saved or restored.
36  unsigned getLowSavedGPR() const { return LowSavedGPR; }
37  void setLowSavedGPR(unsigned Reg) { LowSavedGPR = Reg; }
38 
39  // Get and set the last call-saved GPR that should be saved and restored
40  // by this function.
41  unsigned getHighSavedGPR() const { return HighSavedGPR; }
42  void setHighSavedGPR(unsigned Reg) { HighSavedGPR = Reg; }
43 
44  // Get and set the number of fixed (as opposed to variable) arguments
45  // that are passed in GPRs to this function.
46  unsigned getVarArgsFirstGPR() const { return VarArgsFirstGPR; }
47  void setVarArgsFirstGPR(unsigned GPR) { VarArgsFirstGPR = GPR; }
48 
49  // Likewise FPRs.
50  unsigned getVarArgsFirstFPR() const { return VarArgsFirstFPR; }
51  void setVarArgsFirstFPR(unsigned FPR) { VarArgsFirstFPR = FPR; }
52 
53  // Get and set the frame index of the first stack vararg.
54  unsigned getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
55  void setVarArgsFrameIndex(unsigned FI) { VarArgsFrameIndex = FI; }
56 
57  // Get and set the frame index of the register save area
58  // (i.e. the incoming stack pointer).
59  unsigned getRegSaveFrameIndex() const { return RegSaveFrameIndex; }
60  void setRegSaveFrameIndex(unsigned FI) { RegSaveFrameIndex = FI; }
61 
62  // Get and set whether the function directly manipulates the stack pointer,
63  // e.g. through STACKSAVE or STACKRESTORE.
64  bool getManipulatesSP() const { return ManipulatesSP; }
65  void setManipulatesSP(bool MSP) { ManipulatesSP = MSP; }
66 
67  // Count number of local-dynamic TLS symbols used.
68  unsigned getNumLocalDynamicTLSAccesses() const { return NumLocalDynamics; }
69  void incNumLocalDynamicTLSAccesses() { ++NumLocalDynamics; }
70 };
71 
72 } // end namespace llvm
73 
74 #endif
MachineFunctionInfo - This class can be derived from and used by targets to hold private target-speci...
Reg
All possible values of the reg field in the ModR/M byte.
#define false
Definition: ConvertUTF.c:65
static const MCPhysReg FPR[]
FPR - The set of FP registers that should be allocated for arguments, on Darwin.