Update uses of AsBytes to use MemoryMarshal.AsBytes (#28460)

* Update uses of AsBytes to use MemoryMarshal.AsBytes

* Cleanup commented out code

* Remove AsBytes from MemoryExtensions Portable

2 files changed, 9 insertions, 7 deletions

diff --git a/src/System.Memory/tests/Performance/Perf.Span.IndexOf.cs b/src/System.Memory/tests/Performance/Perf.Span.IndexOf.cs
index dd678920f4..b260183cc3 100644
--- a/src/System.Memory/tests/Performance/Perf.Span.IndexOf.cs
+++ b/src/System.Memory/tests/Performance/Perf.Span.IndexOf.cs
@@ -2,6 +2,7 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+using System.Runtime.InteropServices;
 using Microsoft.Xunit.Performance;
 using Xunit;
 
@@ -44,7 +45,7 @@ namespace System.Memory.Tests
         {
             Span<char> charSpan = new char[size];
             charSpan[size / 2] = '5';
-            Span<byte> byteSpan = charSpan.AsBytes();
+            Span<byte> byteSpan = MemoryMarshal.AsBytes(charSpan);
 
             int index = 0;
             foreach (BenchmarkIteration iteration in Benchmark.Iterations)
@@ -120,7 +121,7 @@ namespace System.Memory.Tests
         {
             Span<char> charSpan = new char[size];
             charSpan[size / 2] = '5';
-            Span<byte> byteSpan = charSpan.AsBytes();
+            Span<byte> byteSpan = MemoryMarshal.AsBytes(charSpan);
 
             int index = 0;
             foreach (BenchmarkIteration iteration in Benchmark.Iterations)
diff --git a/src/System.Memory/tests/Performance/Perf.Span.IndexOfAny.cs b/src/System.Memory/tests/Performance/Perf.Span.IndexOfAny.cs
index 26c5f5bf95..f4a78276f5 100644
--- a/src/System.Memory/tests/Performance/Perf.Span.IndexOfAny.cs
+++ b/src/System.Memory/tests/Performance/Perf.Span.IndexOfAny.cs
@@ -2,6 +2,7 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+using System.Runtime.InteropServices;
 using Microsoft.Xunit.Performance;
 using Xunit;
 
@@ -44,7 +45,7 @@ namespace System.Memory.Tests
         {
             Span<char> charSpan = new char[size];
             charSpan[size / 2] = '5';
-            Span<byte> byteSpan = charSpan.AsBytes();
+            Span<byte> byteSpan = MemoryMarshal.AsBytes(charSpan);
 
             int index = 0;
             foreach (BenchmarkIteration iteration in Benchmark.Iterations)
@@ -118,7 +119,7 @@ namespace System.Memory.Tests
         {
             Span<char> charSpan = new char[size];
             charSpan[size / 2] = '5';
-            Span<byte> byteSpan = charSpan.AsBytes();
+            Span<byte> byteSpan = MemoryMarshal.AsBytes(charSpan);
 
             int index = 0;
             foreach (BenchmarkIteration iteration in Benchmark.Iterations)
@@ -193,7 +194,7 @@ namespace System.Memory.Tests
         {
             Span<char> charSpan = new char[size];
             charSpan[size / 2] = '5';
-            Span<byte> byteSpan = charSpan.AsBytes();
+            Span<byte> byteSpan = MemoryMarshal.AsBytes(charSpan);
             ReadOnlySpan<byte> values = new ReadOnlySpan<byte>(new byte[] { 53, 54, 55, 56 });        // '5' = 53
 
             int index = 0;
@@ -219,7 +220,7 @@ namespace System.Memory.Tests
         {
             Span<char> charSpan = new char[size];
             charSpan[size / 2] = '5';
-            Span<byte> byteSpan = charSpan.AsBytes();
+            Span<byte> byteSpan = MemoryMarshal.AsBytes(charSpan);
             ReadOnlySpan<byte> values = new ReadOnlySpan<byte>(new byte[] { 54, 55, 56, 57 });        // '5' = 53
 
             int index = 0;
@@ -245,7 +246,7 @@ namespace System.Memory.Tests
         {
             Span<char> charSpan = new char[size];
             charSpan[size / 2] = '5';
-            Span<byte> byteSpan = charSpan.AsBytes();
+            Span<byte> byteSpan = MemoryMarshal.AsBytes(charSpan);
             ReadOnlySpan<byte> values = new ReadOnlySpan<byte>(new byte[] { 54, 55, 56, 53 });        // '5' = 53
 
             int index = 0;