llvm/lib/Target/MSP430/MSP430MachineFunctionInfo.h

   1 //=== MSP430MachineFunctionInfo.h - MSP430 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 // This file declares MSP430-specific per-machine-function information.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef LLVM_LIB_TARGET_MSP430_MSP430MACHINEFUNCTIONINFO_H
  14 #define LLVM_LIB_TARGET_MSP430_MSP430MACHINEFUNCTIONINFO_H
  15
  16 #include "llvm/CodeGen/MachineFunction.h"
  17
  18 namespace llvm {
  19
  20 /// MSP430MachineFunctionInfo - This class is derived from MachineFunction and
  21 /// contains private MSP430 target-specific information for each MachineFunction.
  22 class MSP430MachineFunctionInfo : public MachineFunctionInfo {
  23   virtual void anchor();
  24
  25   /// CalleeSavedFrameSize - Size of the callee-saved register portion of the
  26   /// stack frame in bytes.
  27   unsigned CalleeSavedFrameSize = 0;
  28
  29   /// ReturnAddrIndex - FrameIndex for return slot.
  30   int ReturnAddrIndex = 0;
  31
  32   /// VarArgsFrameIndex - FrameIndex for start of varargs area.
  33   int VarArgsFrameIndex = 0;
  34
  35   /// SRetReturnReg - Some subtargets require that sret lowering includes
  36   /// returning the value of the returned struct in a register. This field
  37   /// holds the virtual register into which the sret argument is passed.
  38   Register SRetReturnReg;
  39
  40 public:
  41   MSP430MachineFunctionInfo() = default;
  42
  43   MSP430MachineFunctionInfo(const Function &F, const TargetSubtargetInfo *STI)
  44       : CalleeSavedFrameSize(0), ReturnAddrIndex(0), SRetReturnReg(0) {}
  45
  46   MachineFunctionInfo *
  47   clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
  48         const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
  49       const override;
  50
  51   unsigned getCalleeSavedFrameSize() const { return CalleeSavedFrameSize; }
  52   void setCalleeSavedFrameSize(unsigned bytes) { CalleeSavedFrameSize = bytes; }
  53
  54   Register getSRetReturnReg() const { return SRetReturnReg; }
  55   void setSRetReturnReg(Register Reg) { SRetReturnReg = Reg; }
  56
  57   int getRAIndex() const { return ReturnAddrIndex; }
  58   void setRAIndex(int Index) { ReturnAddrIndex = Index; }
  59
  60   int getVarArgsFrameIndex() const { return VarArgsFrameIndex;}
  61   void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
  62 };
  63
  64 } // End llvm namespace
  65
  66 #endif