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   // SRetReturnReg - Lanai ABI require that sret lowering includes
28   // returning the value of the returned struct in a register. This field
29   // holds the virtual register into which the sret argument is passed.
30   Register SRetReturnReg;
31 
32   // GlobalBaseReg - keeps track of the virtual register initialized for
33   // use as the global base register. This is used for PIC in some PIC
34   // relocation models.
35   Register GlobalBaseReg;
36 
37   // VarArgsFrameIndex - FrameIndex for start of varargs area.
38   int VarArgsFrameIndex;
39 
40 public:
41   explicit LanaiMachineFunctionInfo(MachineFunction &MF)
42       : VarArgsFrameIndex(0) {}
43   MachineFunctionInfo *
44   clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
45         const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
46       const override;
47 
48   Register getSRetReturnReg() const { return SRetReturnReg; }
49   void setSRetReturnReg(Register Reg) { SRetReturnReg = Reg; }
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
58