93 lines
3.2 KiB
C
93 lines
3.2 KiB
C
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//===-- AVRMachineFuctionInfo.h - AVR machine function info -----*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares AVR-specific per-machine-function information.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_AVR_MACHINE_FUNCTION_INFO_H
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#define LLVM_AVR_MACHINE_FUNCTION_INFO_H
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#include "llvm/CodeGen/MachineFunction.h"
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namespace llvm {
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/// Contains AVR-specific information for each MachineFunction.
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class AVRMachineFunctionInfo : public MachineFunctionInfo {
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/// Indicates if a register has been spilled by the register
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/// allocator.
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bool HasSpills;
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/// Indicates if there are any fixed size allocas present.
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/// Note that if there are only variable sized allocas this is set to false.
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bool HasAllocas;
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/// Indicates if arguments passed using the stack are being
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/// used inside the function.
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bool HasStackArgs;
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/// Whether or not the function is an interrupt handler.
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bool IsInterruptHandler;
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/// Whether or not the function is an non-blocking interrupt handler.
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bool IsSignalHandler;
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/// Size of the callee-saved register portion of the
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/// stack frame in bytes.
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unsigned CalleeSavedFrameSize;
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/// FrameIndex for start of varargs area.
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int VarArgsFrameIndex;
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public:
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AVRMachineFunctionInfo(const Function &F, const TargetSubtargetInfo *STI)
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: HasSpills(false), HasAllocas(false), HasStackArgs(false),
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CalleeSavedFrameSize(0), VarArgsFrameIndex(0) {
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CallingConv::ID CallConv = F.getCallingConv();
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this->IsInterruptHandler =
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CallConv == CallingConv::AVR_INTR || F.hasFnAttribute("interrupt");
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this->IsSignalHandler =
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CallConv == CallingConv::AVR_SIGNAL || F.hasFnAttribute("signal");
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}
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MachineFunctionInfo *
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clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
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const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
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const override {
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return DestMF.cloneInfo<AVRMachineFunctionInfo>(*this);
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}
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bool getHasSpills() const { return HasSpills; }
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void setHasSpills(bool B) { HasSpills = B; }
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bool getHasAllocas() const { return HasAllocas; }
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void setHasAllocas(bool B) { HasAllocas = B; }
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bool getHasStackArgs() const { return HasStackArgs; }
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void setHasStackArgs(bool B) { HasStackArgs = B; }
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/// Checks if the function is some form of interrupt service routine.
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bool isInterruptOrSignalHandler() const {
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return isInterruptHandler() || isSignalHandler();
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}
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bool isInterruptHandler() const { return IsInterruptHandler; }
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bool isSignalHandler() const { return IsSignalHandler; }
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unsigned getCalleeSavedFrameSize() const { return CalleeSavedFrameSize; }
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void setCalleeSavedFrameSize(unsigned Bytes) { CalleeSavedFrameSize = Bytes; }
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int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
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void setVarArgsFrameIndex(int Idx) { VarArgsFrameIndex = Idx; }
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};
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} // namespace llvm
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#endif // LLVM_AVR_MACHINE_FUNCTION_INFO_H
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