10% performance boost by replacing callvirt to call in some cases

yaozb-gif · Apr 22, 2020 · 0a4a7b6 · 0a4a7b6
1 parent f0e537f
commit 0a4a7b6
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Showing 2 changed files with 26 additions and 1 deletion.
diff --git a/ILRuntime/CLR/Method/ILMethod.cs b/ILRuntime/CLR/Method/ILMethod.cs
@@ -421,6 +421,12 @@ unsafe void InitToken(ref OpCode code, object token, Dictionary<Mono.Cecil.Cil.I
                         var m = appdomain.GetMethod(token, declaringType, this, out invalidToken);
                         if (m != null)
                         {
+                            if(code.Code == OpCodeEnum.Callvirt && m is ILMethod)
+                            {
+                                ILMethod ilm = (ILMethod)m;
+                                if (!ilm.def.IsAbstract && !ilm.def.IsVirtual && !ilm.DeclearingType.IsInterface)
+                                    code.Code = OpCodeEnum.Call;
+                            }
                             if (invalidToken)
                                 code.TokenInteger = m.GetHashCode();
                             else

diff --git a/TestCases/Test01.cs b/TestCases/Test01.cs
@@ -82,13 +82,25 @@ public static void UnitTest_Performance()
             sw.Reset();
             sw.Start();
             cnt = 0;
-            for (int i = 0; i < 100000; i++)
+            for (int i = 0; i < 1000000; i++)
             {
                 FuncCallResult(ref cnt, i);
             }
             sw.Stop();
 
             Console.WriteLine(string.Format("Elapsed time:{0:0}ms, result = {1}", sw.ElapsedMilliseconds, cnt));
+
+            PerfTest test = new PerfTest();
+            sw.Reset();
+            sw.Start();
+            cnt = 0;
+            for (int i = 0; i < 1000000; i++)
+            {
+                test.FuncCallResult(ref cnt, i);
+            }
+            sw.Stop();
+            Console.WriteLine(string.Format("Elapsed time:{0:0}ms, result = {1}", sw.ElapsedMilliseconds, cnt));
+
         }
 
         public static void UnitTest_Performance3()
@@ -210,6 +222,13 @@ static void Test1098Sub(Test1098Cls cls)
             cls.B = "ok";
         }
 
+        class PerfTest
+        {
+            public void FuncCallResult(ref int cnt, int i)
+            {
+                cnt++;
+            }
+        }
         static void FuncCallResult(ref int cnt, int i)
         {
             cnt++;