[Mono-bugs] [Bug 59006][Wis] New - [perf] stelem.ref perf

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Changed by bmaurer@users.sf.net.

http://bugzilla.ximian.com/show_bug.cgi?id=59006

--- shadow/59006	2004-05-24 23:51:46.000000000 -0400
+++ shadow/59006.tmp.15929	2004-05-24 23:51:46.000000000 -0400
@@ -0,0 +1,44 @@
+Bug#: 59006
+Product: Mono: Runtime
+Version: unspecified
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Wishlist
+Component: misc
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: bmaurer@users.sf.net               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: [perf] stelem.ref perf
+
+Our performance on the following test case is 7x worse than MS.NET
+
+using System;
+
+class T {
+	static void Main () {
+		object [] o = new object [50];
+		object oo = new object ();
+		A (o, oo);
+		
+	}
+	
+	static void A (object [] o, object oo) {
+		if (oo == null)
+			A (o, oo);
+		for (int i = 0; i < 5000000; i ++)
+			o [1] = oo;
+	}
+}
+
+Also, when I removed the stelem.ref array type msismatch check, MCS
+bootstrap time improved by 6%.
+
+Part of the issue is the managed -> unmanaged transition. However, the
+other part is that the typecheck itself seems to be slow. When I skipped
+the LMF stuff, I was only 2x slower.