http://bugzilla.novell.com/show_bug.cgi?id=621215
http://bugzilla.novell.com/show_bug.cgi?id=621215#c0 Summary: Generic casts are slow Classification: Mono Product: Mono: Runtime Version: SVN Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: P5 - None Component: JIT AssignedTo: [email protected] ReportedBy: [email protected] QAContact: [email protected] Found By: --- Blocker: --- using System; using System.Diagnostics; using System.Collections.Generic; class A { } class Test : A { static T TestMethod<T> (A a) where T : A { T t = null; for (int i = 0; i < 10000000; ++i) t = (T) a; return t; } public static void Main () { A target = new Test (); var sw = new Stopwatch (); sw.Start (); TestMethod<Test> (target); sw.Stop (); Console.WriteLine (sw.ElapsedMilliseconds); Console.WriteLine (target.ToString ()); } } The result on 32-bits Mono: 480 NET 4.0: 90 That's about 5x slower. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the QA contact for the bug. _______________________________________________ mono-bugs maillist - [email protected] http://lists.ximian.com/mailman/listinfo/mono-bugs
