llvm/lib/Target/ARC/ARCMachineFunctionInfo.h

   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   explicit ARCFunctionInfo(const Function &F, const TargetSubtargetInfo *STI)
  31       : ReturnStackOffsetSet(false), VarArgsFrameIndex(0),
  32         ReturnStackOffset(-1U), MaxCallStackReq(0) {}
  33   ~ARCFunctionInfo() {}
  34
  35   MachineFunctionInfo *
  36   clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
  37         const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
  38       const override;
  39
  40   void setVarArgsFrameIndex(int off) { VarArgsFrameIndex = off; }
  41   int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
  42
  43   void setReturnStackOffset(unsigned value) {
  44     assert(!ReturnStackOffsetSet && "Return stack offset set twice");
  45     ReturnStackOffset = value;
  46     ReturnStackOffsetSet = true;
  47   }
  48
  49   unsigned getReturnStackOffset() const {
  50     assert(ReturnStackOffsetSet && "Return stack offset not set");
  51     return ReturnStackOffset;
  52   }
  53
  54   unsigned MaxCallStackReq;
  55 };
  56
  57 } // end namespace llvm
  58
  59 #endif // LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H