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 
19 namespace llvm {
20 
21 /// ARCFunctionInfo - This class is derived from MachineFunction private
22 /// ARC target-specific information for each MachineFunction.
23 class ARCFunctionInfo : public MachineFunctionInfo {
24   virtual void anchor();
25   bool ReturnStackOffsetSet;
26   int VarArgsFrameIndex;
27   unsigned ReturnStackOffset;
28 
29 public:
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