[Mono-bugs] [Bug 55901][Wis] New - We do not do complete folding of string concating

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Changed by bmaurer@users.sf.net.

http://bugzilla.ximian.com/show_bug.cgi?id=55901

--- shadow/55901	2004-03-22 12:39:25.000000000 -0500
+++ shadow/55901.tmp.3478	2004-03-22 12:39:25.000000000 -0500
@@ -0,0 +1,57 @@
+Bug#: 55901
+Product: Mono: Compilers
+Version: unspecified
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Wishlist
+Component: C#
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: bmaurer@users.sf.net               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: We do not do complete folding of string concating
+
+If you compile the following code:
+
+using System;
+
+class T {
+	static void Main ()
+	{
+		string name = "foo";
+		Console.WriteLine ("Enumerator value for '" + name + "' is too large to " +
+		                   "fit in its type");
+	}
+}
+
+the il code is:
+
+     IL_0000:  ldstr "foo"
+        IL_0005:  stloc.0
+        IL_0006:  ldstr "Enumerator value for '"
+        IL_000b:  ldloc.0
+        IL_000c:  ldstr "' is too large to "
+        IL_0011:  ldstr "fit in its type"
+        IL_0016:  call string valuetype
+[mscorlib]'System.String'::'Concat'(string, string, string, string)
+        IL_001b:  call void class
+[mscorlib]'System.Console'::'WriteLine'(string)
+        IL_0020:  ret
+
+
+        IL_000c:  ldstr "' is too large to "
+        IL_0011:  ldstr "fit in its type"
+        IL_0016:  call string valuetype
+[mscorlib]'System.String'::'Concat'(string, string, string, string)
+
+is redundant, the string should be folded at compile time, so that you have:
+
+
+        IL_000c:  ldstr "' is too large to fit in its type"
+
+and then concat with 3 arguments.