cc5a1b3dd9
MIR support is totally unusable for AMDGPU without this, since the set of reserved registers is set from fields here. Add a clone method to MachineFunctionInfo. This is a subtle variant of the copy constructor that is required if there are any MIR constructs that use pointers. Specifically, at minimum fields that reference MachineBasicBlocks or the MachineFunction need to be adjusted to the values in the new function.
98 lines
3.4 KiB
C++
98 lines
3.4 KiB
C++
//===-- 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()
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: HasSpills(false), HasAllocas(false), HasStackArgs(false),
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IsInterruptHandler(false), IsSignalHandler(false),
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CalleeSavedFrameSize(0), VarArgsFrameIndex(0) {}
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explicit AVRMachineFunctionInfo(MachineFunction &MF)
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: HasSpills(false), HasAllocas(false), HasStackArgs(false),
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CalleeSavedFrameSize(0), VarArgsFrameIndex(0) {
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unsigned CallConv = MF.getFunction().getCallingConv();
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this->IsInterruptHandler = CallConv == CallingConv::AVR_INTR ||
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MF.getFunction().hasFnAttribute("interrupt");
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this->IsSignalHandler = CallConv == CallingConv::AVR_SIGNAL ||
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MF.getFunction().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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