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Add some CopyTo tests for Span #5032

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Add some CopyTo tests for Span #5032

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18 changes: 14 additions & 4 deletions src/benchmarks/micro/libraries/System.Memory/Span.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -19,9 +19,10 @@ public class Span<T>
where T : struct, IComparable<T>, IEquatable<T>
{
[Params(
4, // non-vectorized code path
33, // both vectorized and non-vectorized code path
512)] // vectorized code path
4, // non-vectorized code path
33, // both vectorized and non-vectorized code path
512, // vectorized code path
3000)] // larger than memmove p/invoke threshold
public int Size;

private T[] _array, _same, _different, _emptyWithSingleValue;
Expand All @@ -39,7 +40,16 @@ public void Setup()

[Benchmark]
public void Clear() => new System.Span<T>(_array).Clear();


[Benchmark]
public void CopyTo() => _array.AsSpan().CopyTo(_different);

[Benchmark]
public void CopyToSame() => _array.AsSpan().CopyTo(_array);

[Benchmark]
public void CopyToOverlap() => _array.AsSpan(0, _array.Length - 1).CopyTo(_array.AsSpan(1));

[Benchmark]
public void Fill() => new System.Span<T>(_array).Fill(default);

Expand Down