ARCMachineFunctionInfo.h revision 360784 
1//===- ARCMachineFunctionInfo.h - ARC 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 ARC-specific per-machine-function information.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H
14#define LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H
15
16#include "llvm/CodeGen/MachineFunction.h"
17#include <vector>
18
19namespace llvm {
20
21/// ARCFunctionInfo - This class is derived from MachineFunction private
22/// ARC target-specific information for each MachineFunction.
23class ARCFunctionInfo : public MachineFunctionInfo {
24  virtual void anchor();
25  bool ReturnStackOffsetSet;
26  int VarArgsFrameIndex;
27  unsigned ReturnStackOffset;
28
29public:
30  ARCFunctionInfo()
31      : ReturnStackOffsetSet(false), VarArgsFrameIndex(0),
32        ReturnStackOffset(-1U), MaxCallStackReq(0) {}
33
34  explicit ARCFunctionInfo(MachineFunction &MF)
35      : ReturnStackOffsetSet(false), VarArgsFrameIndex(0),
36        ReturnStackOffset(-1U), MaxCallStackReq(0) {
37    // Functions are 4-byte aligned.
38    MF.setAlignment(Align(4));
39  }
40
41  ~ARCFunctionInfo() {}
42
43  void setVarArgsFrameIndex(int off) { VarArgsFrameIndex = off; }
44  int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
45
46  void setReturnStackOffset(unsigned value) {
47    assert(!ReturnStackOffsetSet && "Return stack offset set twice");
48    ReturnStackOffset = value;
49    ReturnStackOffsetSet = true;
50  }
51
52  unsigned getReturnStackOffset() const {
53    assert(ReturnStackOffsetSet && "Return stack offset not set");
54    return ReturnStackOffset;
55  }
56
57  unsigned MaxCallStackReq;
58};
59
60} // end namespace llvm
61
62#endif // LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H
63