[unity]il2cpp优化打开后，对Delegate.Invoke的支持

unity/Assets/core/upm/Runtime/Src/IL2Cpp/TypeRegister.cs

@@ -206,6 +206,7 @@ private static void Register(Type type, MethodBase[] ctors = null, MethodBase[]
                             }
                         }
                     }
+                }
 
                     Action<string, MethodInfo, bool, bool, bool> AddMethodToType = (string name, MethodInfo method, bool isGetter, bool isSetter, bool isExtensionMethod) =>
                     {
@@ -277,7 +278,9 @@ private static void Register(Type type, MethodBase[] ctors = null, MethodBase[]
                             AddMethodToType(method.Name, method as MethodInfo, false, false, false);
                         }
                     }
-
+
+                if (!isDelegate)
+                {
 					var extensionMethods = ExtensionMethodInfo.Get(type);
 					if (extensionMethods != null)
                     {

unity/test/Src/Cases/CrossLang/DelegateTest.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using NUnit.Framework;
+
+namespace Puerts.UnitTest 
+{
+    public delegate void TestCallback(string msg);
+    class DelegateTestClass
+    {
+        public TestCallback Callback;
+
+        public void CSMessage()
+        {
+            Callback("cs_msg");
+        }
+    };
+
+    [TestFixture]
+    public class DelegateTest
+    {
+        [Test]
+        public void DelegateBase()
+        {
+            var jsEnv = UnitTestEnv.GetEnv();
+
+            jsEnv.Eval(@"
+                globalThis.deleteobj = new CS.Puerts.UnitTest.DelegateTestClass()
+                deleteobj.Callback = (msg) => globalThis.info = msg;
+                deleteobj.CSMessage();
+            ");
+
+            string info = jsEnv.Eval<string>("globalThis.info");
+            Assert.AreEqual("cs_msg", info);
+
+            jsEnv.Eval(@"deleteobj.Callback.Invoke('js_msg')");
+            info = jsEnv.Eval<string>("globalThis.info");
+            Assert.AreEqual("js_msg", info);
+        }
+    }
+}