lib/Target/SystemZ/SystemZMachineFunctionInfo.h

   1 //=== SystemZMachineFunctionInfo.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
  13 #include "llvm/CodeGen/MachineFunction.h"
  14
  15 namespace llvm {
  16
  17 class 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   int FramePointerSaveIndex;
  26   bool ManipulatesSP;
  27   unsigned NumLocalDynamics;
  28
  29 public:
  30   explicit SystemZMachineFunctionInfo(MachineFunction &MF)
  31     : LowSavedGPR(0), HighSavedGPR(0), VarArgsFirstGPR(0), VarArgsFirstFPR(0),
  32       VarArgsFrameIndex(0), RegSaveFrameIndex(0), FramePointerSaveIndex(0),
  33       ManipulatesSP(false), NumLocalDynamics(0) {}
  34
  35   // Get and set the first call-saved GPR that should be saved and restored
  36   // by this function.  This is 0 if no GPRs need to be saved or restored.
  37   unsigned getLowSavedGPR() const { return LowSavedGPR; }
  38   void setLowSavedGPR(unsigned Reg) { LowSavedGPR = Reg; }
  39
  40   // Get and set the last call-saved GPR that should be saved and restored
  41   // by this function.
  42   unsigned getHighSavedGPR() const { return HighSavedGPR; }
  43   void setHighSavedGPR(unsigned Reg) { HighSavedGPR = Reg; }
  44
  45   // Get and set the number of fixed (as opposed to variable) arguments
  46   // that are passed in GPRs to this function.
  47   unsigned getVarArgsFirstGPR() const { return VarArgsFirstGPR; }
  48   void setVarArgsFirstGPR(unsigned GPR) { VarArgsFirstGPR = GPR; }
  49
  50   // Likewise FPRs.
  51   unsigned getVarArgsFirstFPR() const { return VarArgsFirstFPR; }
  52   void setVarArgsFirstFPR(unsigned FPR) { VarArgsFirstFPR = FPR; }
  53
  54   // Get and set the frame index of the first stack vararg.
  55   unsigned getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
  56   void setVarArgsFrameIndex(unsigned FI) { VarArgsFrameIndex = FI; }
  57
  58   // Get and set the frame index of the register save area
  59   // (i.e. the incoming stack pointer).
  60   unsigned getRegSaveFrameIndex() const { return RegSaveFrameIndex; }
  61   void setRegSaveFrameIndex(unsigned FI) { RegSaveFrameIndex = FI; }
  62
  63   // Get and set the frame index of where the old frame pointer is stored.
  64   int getFramePointerSaveIndex() const { return FramePointerSaveIndex; }
  65   void setFramePointerSaveIndex(int Idx) { FramePointerSaveIndex = Idx; }
  66
  67   // Get and set whether the function directly manipulates the stack pointer,
  68   // e.g. through STACKSAVE or STACKRESTORE.
  69   bool getManipulatesSP() const { return ManipulatesSP; }
  70   void setManipulatesSP(bool MSP) { ManipulatesSP = MSP; }
  71
  72   // Count number of local-dynamic TLS symbols used.
  73   unsigned getNumLocalDynamicTLSAccesses() const { return NumLocalDynamics; }
  74   void incNumLocalDynamicTLSAccesses() { ++NumLocalDynamics; }
  75 };
  76
  77 } // end namespace llvm
  78
  79 #endif