lib/Target/SystemZ/SystemZMachineFunctionInfo.h

   1 //=== SystemZMachineFunctionInfo.h - SystemZ machine function info -*- C++ -*-//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZMACHINEFUNCTIONINFO_H
  10 #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZMACHINEFUNCTIONINFO_H
  11
  12 #include "llvm/CodeGen/MachineFunction.h"
  13
  14 namespace llvm {
  15
  16 class SystemZMachineFunctionInfo : public MachineFunctionInfo {
  17   virtual void anchor();
  18   unsigned LowSavedGPR;
  19   unsigned HighSavedGPR;
  20   unsigned VarArgsFirstGPR;
  21   unsigned VarArgsFirstFPR;
  22   unsigned VarArgsFrameIndex;
  23   unsigned RegSaveFrameIndex;
  24   int FramePointerSaveIndex;
  25   bool ManipulatesSP;
  26   unsigned NumLocalDynamics;
  27
  28 public:
  29   explicit SystemZMachineFunctionInfo(MachineFunction &MF)
  30     : LowSavedGPR(0), HighSavedGPR(0), VarArgsFirstGPR(0), VarArgsFirstFPR(0),
  31       VarArgsFrameIndex(0), RegSaveFrameIndex(0), FramePointerSaveIndex(0),
  32       ManipulatesSP(false), 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 the frame index of where the old frame pointer is stored.
  63   int getFramePointerSaveIndex() const { return FramePointerSaveIndex; }
  64   void setFramePointerSaveIndex(int Idx) { FramePointerSaveIndex = Idx; }
  65
  66   // Get and set whether the function directly manipulates the stack pointer,
  67   // e.g. through STACKSAVE or STACKRESTORE.
  68   bool getManipulatesSP() const { return ManipulatesSP; }
  69   void setManipulatesSP(bool MSP) { ManipulatesSP = MSP; }
  70
  71   // Count number of local-dynamic TLS symbols used.
  72   unsigned getNumLocalDynamicTLSAccesses() const { return NumLocalDynamics; }
  73   void incNumLocalDynamicTLSAccesses() { ++NumLocalDynamics; }
  74 };
  75
  76 } // end namespace llvm
  77
  78 #endif