Imported Upstream version 5.16.0.100

Former-commit-id: 38faa55fb9669e35e7d8448b15c25dc447f25767

mcs/class/corlib/System.Runtime.CompilerServices/PreserveDependencyAttribute.cs

@@ -0,0 +1,40 @@
+//
+// PreserveDependencyAttribute.cs
+//
+// Authors:
+//      Marek Safar  <marek.safar@gmail.com>
+//
+// Copyright (C) 2018  Microsoft Corporation
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+namespace System.Runtime.CompilerServices {
+	[AttributeUsage (AttributeTargets.Method | AttributeTargets.Constructor, AllowMultiple = true)]
+	/*public*/ sealed class PreserveDependencyAttribute : Attribute {
+		public PreserveDependencyAttribute (string metadataSignature)
+		{
+		}
+
+		public PreserveDependencyAttribute (string metadataSignature, string condition)
+		{
+		}
+	}
+}

mcs/class/corlib/System.Runtime.CompilerServices/RuntimeHelpers.cs

@@ -141,8 +141,6 @@ namespace System.Runtime.CompilerServices
 		[MonoTODO("Currently a no-op")]
 		public static void PrepareDelegate (Delegate d)
 		{
-			if (d == null)
-				throw new ArgumentNullException ("d");
 		}
 
 		// extracted from ../../../../external/referencesource/mscorlib/system/runtime/compilerservices/runtimehelpers.cs

mcs/class/corlib/System.Runtime.CompilerServices/Unsafe.cs

@@ -26,6 +26,14 @@
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
+#if BIT64
+using nuint = System.UInt64;
+using nint = System.Int64;
+#else
+using nuint = System.UInt32;
+using nint = System.Int32;
+#endif
+
 namespace System.Runtime.CompilerServices
 {
 	static partial class Unsafe
@@ -60,7 +68,12 @@ namespace System.Runtime.CompilerServices
 			throw new NotImplementedException ();
 		}
 		
-		public static ref TTo As<TFrom, TTo>(ref TFrom source)
+		public static ref TTo As<TFrom, TTo> (ref TFrom source)
+		{
+			throw new NotImplementedException ();
+		}
+
+		public unsafe static void* AsPointer<T> (ref T value)
 		{
 			throw new NotImplementedException ();
 		}
@@ -95,6 +108,11 @@ namespace System.Runtime.CompilerServices
 			throw new NotImplementedException ();
 		}
 
+		public unsafe static T ReadUnaligned<T> (void* source)
+		{
+			throw new NotImplementedException ();
+		}
+
 		public static T ReadUnaligned<T> (ref byte source)
 		{
 			throw new NotImplementedException ();
@@ -114,5 +132,12 @@ namespace System.Runtime.CompilerServices
 		{
 			throw new NotImplementedException ();
 		}
+
+
+		[MethodImpl (MethodImplOptions.AggressiveInlining)]
+		unsafe internal static ref T AddByteOffset<T> (ref T source, nuint byteOffset)
+		{
+			return ref AddByteOffset (ref source, (IntPtr)(void*)byteOffset);
+		}
 	}
 }

mcs/class/corlib/System.Runtime.CompilerServices/Unsafe.il

@@ -348,4 +348,21 @@
         ret
   }
 
+  .method public hidebysig static bool IsAddressGreaterThan<T>(!!T& left, !!T& right) cil managed aggressiveinlining
+  {
+        .maxstack 2
+        ldarg.0
+        ldarg.1
+        cgt.un
+        ret
+  }
+
+  .method public hidebysig static bool IsAddressLessThan<T>(!!T& left, !!T& right) cil managed aggressiveinlining
+  {
+        .maxstack 2
+        ldarg.0
+        ldarg.1
+        clt.un
+        ret
+  }
 }