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 67