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1//===-- AVRMachineFuctionInfo.h - AVR 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-exception6//7//===----------------------------------------------------------------------===//8//9// This file declares AVR-specific per-machine-function information.10//11//===----------------------------------------------------------------------===//12 13#ifndef LLVM_AVR_MACHINE_FUNCTION_INFO_H14#define LLVM_AVR_MACHINE_FUNCTION_INFO_H15 16#include "llvm/CodeGen/MachineFunction.h"17 18namespace llvm {19 20/// Contains AVR-specific information for each MachineFunction.21class AVRMachineFunctionInfo : public MachineFunctionInfo {22 /// Indicates if a register has been spilled by the register23 /// allocator.24 bool HasSpills;25 26 /// Indicates if there are any fixed size allocas present.27 /// Note that if there are only variable sized allocas this is set to false.28 bool HasAllocas;29 30 /// Indicates if arguments passed using the stack are being31 /// used inside the function.32 bool HasStackArgs;33 34 /// Whether or not the function is an interrupt handler.35 bool IsInterruptHandler;36 37 /// Whether or not the function is an non-blocking interrupt handler.38 bool IsSignalHandler;39 40 /// Size of the callee-saved register portion of the41 /// stack frame in bytes.42 unsigned CalleeSavedFrameSize;43 44 /// FrameIndex for start of varargs area.45 int VarArgsFrameIndex;46 47public:48 AVRMachineFunctionInfo(const Function &F, const TargetSubtargetInfo *STI)49 : HasSpills(false), HasAllocas(false), HasStackArgs(false),50 CalleeSavedFrameSize(0), VarArgsFrameIndex(0) {51 CallingConv::ID CallConv = F.getCallingConv();52 53 this->IsInterruptHandler =54 CallConv == CallingConv::AVR_INTR || F.hasFnAttribute("interrupt");55 this->IsSignalHandler =56 CallConv == CallingConv::AVR_SIGNAL || F.hasFnAttribute("signal");57 }58 59 MachineFunctionInfo *60 clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,61 const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)62 const override {63 return DestMF.cloneInfo<AVRMachineFunctionInfo>(*this);64 }65 66 bool getHasSpills() const { return HasSpills; }67 void setHasSpills(bool B) { HasSpills = B; }68 69 bool getHasAllocas() const { return HasAllocas; }70 void setHasAllocas(bool B) { HasAllocas = B; }71 72 bool getHasStackArgs() const { return HasStackArgs; }73 void setHasStackArgs(bool B) { HasStackArgs = B; }74 75 /// Checks if the function is some form of interrupt service routine.76 bool isInterruptOrSignalHandler() const {77 return isInterruptHandler() || isSignalHandler();78 }79 80 bool isInterruptHandler() const { return IsInterruptHandler; }81 bool isSignalHandler() const { return IsSignalHandler; }82 83 unsigned getCalleeSavedFrameSize() const { return CalleeSavedFrameSize; }84 void setCalleeSavedFrameSize(unsigned Bytes) { CalleeSavedFrameSize = Bytes; }85 86 int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }87 void setVarArgsFrameIndex(int Idx) { VarArgsFrameIndex = Idx; }88};89 90} // namespace llvm91 92#endif // LLVM_AVR_MACHINE_FUNCTION_INFO_H93