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163 lines
4.6 KiB
C#
163 lines
4.6 KiB
C#
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using System;
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using System.Collections.Generic;
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namespace ARMeilleure.IntermediateRepresentation
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{
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class Node
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{
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public Operand Destination
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{
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get
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{
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return _destinations.Length != 0 ? GetDestination(0) : null;
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}
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set
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{
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if (value != null)
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{
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SetDestinations(new Operand[] { value });
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}
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else
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{
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SetDestinations(new Operand[0]);
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}
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}
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}
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private Operand[] _destinations;
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private Operand[] _sources;
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private LinkedListNode<Node>[] _asgUseNodes;
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private LinkedListNode<Node>[] _srcUseNodes;
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public int DestinationsCount => _destinations.Length;
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public int SourcesCount => _sources.Length;
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public Node(Operand destination, int sourcesCount)
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{
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Destination = destination;
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_sources = new Operand[sourcesCount];
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_srcUseNodes = new LinkedListNode<Node>[sourcesCount];
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}
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public Node(Operand[] destinations, int sourcesCount)
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{
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SetDestinations(destinations ?? throw new ArgumentNullException(nameof(destinations)));
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_sources = new Operand[sourcesCount];
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_srcUseNodes = new LinkedListNode<Node>[sourcesCount];
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}
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public Operand GetDestination(int index)
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{
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return _destinations[index];
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}
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public Operand GetSource(int index)
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{
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return _sources[index];
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}
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public void SetDestination(int index, Operand destination)
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{
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Operand oldOp = _destinations[index];
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if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable)
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{
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oldOp.Assignments.Remove(_asgUseNodes[index]);
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}
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if (destination != null && destination.Kind == OperandKind.LocalVariable)
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{
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_asgUseNodes[index] = destination.Assignments.AddLast(this);
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}
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_destinations[index] = destination;
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}
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public void SetSource(int index, Operand source)
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{
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Operand oldOp = _sources[index];
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if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable)
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{
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oldOp.Uses.Remove(_srcUseNodes[index]);
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}
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if (source != null && source.Kind == OperandKind.LocalVariable)
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{
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_srcUseNodes[index] = source.Uses.AddLast(this);
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}
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_sources[index] = source;
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}
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public void SetDestinations(Operand[] destinations)
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{
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if (_destinations != null)
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{
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for (int index = 0; index < _destinations.Length; index++)
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{
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Operand oldOp = _destinations[index];
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if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable)
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{
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oldOp.Assignments.Remove(_asgUseNodes[index]);
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}
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}
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_destinations = destinations;
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}
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else
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{
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_destinations = new Operand[destinations.Length];
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}
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_asgUseNodes = new LinkedListNode<Node>[destinations.Length];
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for (int index = 0; index < destinations.Length; index++)
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{
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Operand newOp = destinations[index];
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_destinations[index] = newOp;
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if (newOp.Kind == OperandKind.LocalVariable)
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{
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_asgUseNodes[index] = newOp.Assignments.AddLast(this);
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}
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}
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}
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public void SetSources(Operand[] sources)
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{
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for (int index = 0; index < _sources.Length; index++)
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{
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Operand oldOp = _sources[index];
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if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable)
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{
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oldOp.Uses.Remove(_srcUseNodes[index]);
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}
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}
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_sources = new Operand[sources.Length];
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_srcUseNodes = new LinkedListNode<Node>[sources.Length];
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for (int index = 0; index < sources.Length; index++)
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{
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Operand newOp = sources[index];
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_sources[index] = newOp;
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if (newOp.Kind == OperandKind.LocalVariable)
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{
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_srcUseNodes[index] = newOp.Uses.AddLast(this);
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}
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}
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}
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}
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}
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