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using System;
namespace ARMeilleure.CodeGen.RegisterAllocators
{
unsafe readonly struct LiveRange : IEquatable<LiveRange>
{
private struct Data
{
public int Start;
public int End;
public LiveRange Next;
}
private readonly Data* _data;
public ref int Start => ref _data->Start;
public ref int End => ref _data->End;
public ref LiveRange Next => ref _data->Next;
public LiveRange(int start, int end, LiveRange next = default)
{
_data = Allocators.LiveRanges.Allocate<Data>();
Start = start;
End = end;
Next = next;
}
public bool Overlaps(int start, int end)
{
return Start < end && start < End;
}
public bool Overlaps(LiveRange range)
{
return Start < range.End && range.Start < End;
}
public bool Overlaps(int position)
{
return position >= Start && position < End;
}
public bool Equals(LiveRange range)
{
return range._data == _data;
}
public override bool Equals(object obj)
{
return obj is LiveRange range && Equals(range);
}
public static bool operator ==(LiveRange a, LiveRange b)
{
return a.Equals(b);
}
public static bool operator !=(LiveRange a, LiveRange b)
{
return !a.Equals(b);
}
public override int GetHashCode()
{
return HashCode.Combine((IntPtr)_data);
}
public override string ToString()
{
return $"[{Start}, {End})";
}
}
}
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