Imported Upstream version 4.6.0.150

Former-commit-id: 73e3bb1e96dd09dc931c1dfe559d2c7f7b8b02c7

mcs/class/referencesource/System.Core/Microsoft/Scripting/Ast/LambdaExpression.cs

@@ -139,6 +139,13 @@ namespace System.Linq.Expressions {
             return LambdaCompiler.Compile(this, debugInfoGenerator);
         }
 
+#if NETSTANDARD
+        public Delegate Compile(bool preferInterpretation) {
+            // TODO: add logic for preferInterpretation
+            return Compile();
+        }
+#endif
+
         /// <summary>
         /// Compiles the lambda into a method definition.
         /// </summary>
@@ -200,6 +207,13 @@ namespace System.Linq.Expressions {
             return (TDelegate)(object)LambdaCompiler.Compile(this, debugInfoGenerator);
         }
 
+#if NETSTANDARD
+        public new TDelegate Compile(bool preferInterpretation) {
+            // TODO: add logic for preferInterpretation
+            return Compile();
+        }
+#endif
+
         /// <summary>
         /// Creates a new expression that is like this one, but using the
         /// supplied children. If all of the children are the same, it will