lib/Target/Lanai/LanaiMachineFunctionInfo.h

   1 //===- LanaiMachineFuctionInfo.h - Lanai machine func 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 Lanai-specific per-machine-function information.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef LLVM_LIB_TARGET_LANAI_LANAIMACHINEFUNCTIONINFO_H
  14 #define LLVM_LIB_TARGET_LANAI_LANAIMACHINEFUNCTIONINFO_H
  15
  16 #include "LanaiRegisterInfo.h"
  17 #include "llvm/CodeGen/MachineFunction.h"
  18 #include "llvm/CodeGen/MachineRegisterInfo.h"
  19
  20 namespace llvm {
  21
  22 // LanaiMachineFunctionInfo - This class is derived from MachineFunction and
  23 // contains private Lanai target-specific information for each MachineFunction.
  24 class LanaiMachineFunctionInfo : public MachineFunctionInfo {
  25   virtual void anchor();
  26
  27   MachineFunction &MF;
  28
  29   // SRetReturnReg - Lanai ABI require that sret lowering includes
  30   // returning the value of the returned struct in a register. This field
  31   // holds the virtual register into which the sret argument is passed.
  32   unsigned SRetReturnReg;
  33
  34   // GlobalBaseReg - keeps track of the virtual register initialized for
  35   // use as the global base register. This is used for PIC in some PIC
  36   // relocation models.
  37   unsigned GlobalBaseReg;
  38
  39   // VarArgsFrameIndex - FrameIndex for start of varargs area.
  40   int VarArgsFrameIndex;
  41
  42 public:
  43   explicit LanaiMachineFunctionInfo(MachineFunction &MF)
  44       : MF(MF), SRetReturnReg(0), GlobalBaseReg(0), VarArgsFrameIndex(0) {}
  45
  46   unsigned getSRetReturnReg() const { return SRetReturnReg; }
  47   void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
  48
  49   unsigned getGlobalBaseReg();
  50
  51   int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
  52   void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
  53 };
  54
  55 } // namespace llvm
  56
  57 #endif // LLVM_LIB_TARGET_LANAI_LANAIMACHINEFUNCTIONINFO_H