Fix release build - conditionally exclude usings only used for DEBUG only code

src/Compilers/Core/Portable/Collections/ImmutableArrayExtensions.cs

@@ -10,11 +10,14 @@
 using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
 using System.IO;
-using System.Linq;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 using Microsoft.CodeAnalysis.PooledObjects;
 
+#if DEBUG
+using System.Linq;
+#endif
+
 namespace Microsoft.CodeAnalysis
 {
     /// <summary>

src/Compilers/Core/Portable/InternalUtilities/EnumerableExtensions.cs

@@ -9,13 +9,16 @@
 using System.Collections.Generic;
 using System.Collections.Immutable;
 using System.Collections.ObjectModel;
-using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.PooledObjects;
 using Roslyn.Utilities;
 
+#if DEBUG
+using System.Diagnostics;
+#endif
+
 namespace Roslyn.Utilities
 {
     internal static partial class EnumerableExtensions

src/Compilers/Core/Portable/InternalUtilities/StringTable.cs

@@ -5,12 +5,15 @@
 #nullable enable
 
 using System;
-using System.Diagnostics;
 using System.Text;
 using System.Threading;
 using Microsoft.CodeAnalysis.PooledObjects;
 using Microsoft.CodeAnalysis;
 
+#if DEBUG
+using System.Diagnostics;
+#endif
+
 namespace Roslyn.Utilities
 {
     /// <summary>

src/Features/Core/Portable/SolutionCrawler/WorkCoordinator.NormalPriorityProcessor.cs

@@ -6,7 +6,6 @@
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Collections.Immutable;
-using System.Diagnostics;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.CodeAnalysis.ErrorReporting;
@@ -16,6 +15,10 @@
 using Microsoft.CodeAnalysis.Shared.TestHooks;
 using Roslyn.Utilities;
 
+#if DEBUG
+using System.Diagnostics;
+#endif
+
 namespace Microsoft.CodeAnalysis.SolutionCrawler
 {
     internal sealed partial class SolutionCrawlerRegistrationService

src/Features/Core/Portable/Wrapping/BinaryExpression/AbstractBinaryExpressionWrapper.cs

@@ -3,12 +3,15 @@
 // See the LICENSE file in the project root for more information.
 
 using System.Collections.Immutable;
-using System.Diagnostics;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.CodeAnalysis.LanguageServices;
 using Microsoft.CodeAnalysis.PooledObjects;
 
+#if DEBUG
+using System.Diagnostics;
+#endif
+
 namespace Microsoft.CodeAnalysis.Wrapping.BinaryExpression
 {
     using Microsoft.CodeAnalysis.Indentation;

src/Workspaces/Core/Portable/Remote/RemoteHostClient.cs

@@ -6,7 +6,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Diagnostics;
 using System.IO;
 using System.Threading;
 using System.Threading.Tasks;
@@ -14,6 +13,10 @@
 using Microsoft.CodeAnalysis.PooledObjects;
 using Roslyn.Utilities;
 
+#if DEBUG
+using System.Diagnostics;
+#endif
+
 namespace Microsoft.CodeAnalysis.Remote
 {
     /// <summary>

src/Workspaces/Core/Portable/Simplification/AbstractSimplificationService.cs

@@ -14,10 +14,13 @@
 using Microsoft.CodeAnalysis.Internal.Log;
 using Microsoft.CodeAnalysis.Options;
 using Microsoft.CodeAnalysis.Shared.Collections;
-using Microsoft.CodeAnalysis.Shared.Extensions;
 using Microsoft.CodeAnalysis.Text;
 using Roslyn.Utilities;
 
+#if DEBUG
+using Microsoft.CodeAnalysis.Shared.Extensions;
+#endif
+
 namespace Microsoft.CodeAnalysis.Simplification
 {
     internal abstract class AbstractSimplificationService<TExpressionSyntax, TStatementSyntax, TCrefSyntax> : ISimplificationService

src/Workspaces/Core/Portable/Storage/SQLite/v1/SQLitePersistentStorage.Accessor.cs

@@ -4,7 +4,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using System.Threading;
@@ -14,6 +13,10 @@
 using Microsoft.CodeAnalysis.Storage;
 using Roslyn.Utilities;
 
+#if DEBUG
+using System.Diagnostics;
+#endif
+
 namespace Microsoft.CodeAnalysis.SQLite.v1
 {
     internal partial class SQLitePersistentStorage

src/Workspaces/Core/Portable/Storage/SQLite/v2/SQLitePersistentStorage.Accessor.cs

@@ -3,7 +3,6 @@
 // See the LICENSE file in the project root for more information.
 
 using System;
-using System.Diagnostics;
 using System.IO;
 using System.Threading;
 using System.Threading.Tasks;
@@ -11,6 +10,10 @@
 using Microsoft.CodeAnalysis.Storage;
 using Roslyn.Utilities;
 
+#if DEBUG
+using System.Diagnostics;
+#endif
+
 namespace Microsoft.CodeAnalysis.SQLite.v2
 {
     internal partial class SQLitePersistentStorage

src/Workspaces/Core/Portable/SymbolKey/SymbolKeyResolution.cs

@@ -3,9 +3,12 @@
 // See the LICENSE file in the project root for more information.
 
 using System.Collections.Immutable;
-using System.Diagnostics;
 using System.Threading;
 
+#if DEBUG
+using System.Diagnostics;
+#endif
+
 namespace Microsoft.CodeAnalysis
 {
     /// <summary>

src/Workspaces/Core/Portable/Workspace/Solution/SolutionState.CompilationTracker.State.cs

@@ -6,11 +6,14 @@
 
 using System;
 using System.Collections.Immutable;
-using System.Diagnostics;
 using System.Linq;
 using Microsoft.CodeAnalysis;
 using Roslyn.Utilities;
 
+#if DEBUG
+using System.Diagnostics;
+#endif
+
 namespace Microsoft.CodeAnalysis
 {
     internal partial class SolutionState

src/Workspaces/Remote/Core/Services/SolutionCreator.cs

@@ -10,7 +10,6 @@
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.CodeAnalysis.Diagnostics;
-using Microsoft.CodeAnalysis.Remote.DebugUtil;
 using Microsoft.CodeAnalysis.Serialization;
 using Microsoft.CodeAnalysis.Text;
 using Roslyn.Utilities;
@@ -19,6 +18,10 @@
 using Microsoft.CodeAnalysis.Options;
 using Microsoft.CodeAnalysis.ErrorReporting;
 
+#if DEBUG
+using Microsoft.CodeAnalysis.Remote.DebugUtil;
+#endif
+
 namespace Microsoft.CodeAnalysis.Remote
 {
     /// <summary>

src/Workspaces/Remote/Core/TestUtils.cs

@@ -3,14 +3,17 @@
 // See the LICENSE file in the project root for more information.
 
 using System.Collections.Generic;
-using System.Diagnostics;
 using System.Linq;
-using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
-using Microsoft.CodeAnalysis.Internal.Log;
 using Microsoft.CodeAnalysis.Serialization;
 
+#if DEBUG
+using System.Diagnostics;
+using System.Text;
+using Microsoft.CodeAnalysis.Internal.Log;
+#endif
+
 namespace Microsoft.CodeAnalysis.Remote.DebugUtil
 {
     internal static class TestUtils

src/Workspaces/SharedUtilitiesAndExtensions/Compiler/Core/EmbeddedLanguages/VirtualChars/VirtualCharSequence.Chunks.cs

@@ -3,10 +3,13 @@
 // See the LICENSE file in the project root for more information.
 
 using System.Collections.Immutable;
-using System.Diagnostics;
 using System.Text;
 using Microsoft.CodeAnalysis.Text;
 
+#if DEBUG
+using System.Diagnostics;
+#endif
+
 namespace Microsoft.CodeAnalysis.EmbeddedLanguages.VirtualChars
 {
     internal partial struct VirtualCharSequence

src/Workspaces/SharedUtilitiesAndExtensions/Compiler/Core/FlowAnalysis/LValueFlowCaptureProvider.cs

@@ -3,10 +3,13 @@
 // See the LICENSE file in the project root for more information.
 
 using System.Collections.Immutable;
-using System.Diagnostics;
 using Microsoft.CodeAnalysis.Operations;
 using Microsoft.CodeAnalysis.PooledObjects;
 
+#if DEBUG
+using System.Diagnostics;
+#endif
+
 namespace Microsoft.CodeAnalysis.FlowAnalysis
 {
     /// <summary>

src/Workspaces/SharedUtilitiesAndExtensions/Workspace/Core/Extensions/DocumentExtensions.cs

@@ -6,8 +6,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Collections.Immutable;
-using System.Diagnostics;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
@@ -18,6 +16,11 @@
 using Microsoft.CodeAnalysis.Text;
 using Roslyn.Utilities;
 
+#if DEBUG
+using System.Collections.Immutable;
+using System.Diagnostics;
+#endif
+
 namespace Microsoft.CodeAnalysis.Shared.Extensions
 {
     internal static partial class DocumentExtensions