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