Use simple loop tracking instead of size to determine if

lib/compiler/implementation/enqueue.dart

Index: lib/compiler/implementation/enqueue.dart
diff --git a/lib/compiler/implementation/enqueue.dart b/lib/compiler/implementation/enqueue.dart
index 855c539fa1d4a28b9b0a875062deca3965ceb5cf..55d15c40361972404aaff42a46bc7b1fc7f507d1 100644
--- a/lib/compiler/implementation/enqueue.dart
+++ b/lib/compiler/implementation/enqueue.dart
@@ -148,18 +148,21 @@ class Enqueuer {
 
   void registerNewSelector(SourceString name,
                            Selector selector,
-                           Map<SourceString, Set<Selector>> selectorsMap) {
+                           Map<SourceString, Set<Selector>> selectorsMap,
+                           [bool inLoop]) {

[ngeoffray, 2012/06/12 09:17:40]

I wouldn't let the enqueuer be aware of such considerations. It's really
something only the backend needs to care.

[Mads Ager (google), 2012/06/12 11:01:56]

Good point. Removed.

     Set<Selector> selectors =
         selectorsMap.putIfAbsent(name, () => new Set<Selector>());
     if (!selectors.contains(selector)) {
       selectors.add(selector);
-      handleUnseenSelector(name, selector);
+      handleUnseenSelector(name, selector, inLoop);
     }
   }
 
-  void registerInvocation(SourceString methodName, Selector selector) {
+  void registerInvocation(SourceString methodName,
+                          Selector selector,
+                          [bool inLoop]) {
     task.measure(() {
-      registerNewSelector(methodName, selector, universe.invokedNames);
+      registerNewSelector(methodName, selector, universe.invokedNames, inLoop);
     });
   }
 
@@ -187,9 +190,12 @@ class Enqueuer {
     }
   }
 
-  void handleUnseenSelector(SourceString methodName, Selector selector) {
+  void handleUnseenSelector(SourceString methodName,
+                            Selector selector,
+                            [bool inLoop]) {
     processInstanceMembers(methodName, (Element member) {
       if (selector.applies(member, compiler)) {
+        if (inLoop && member is FunctionElement) member.calledInLoop = true;
         addToWorkList(member);
         return true;
       }
@@ -206,9 +212,11 @@ class Enqueuer {
     universe.staticFunctionsNeedingGetter.add(element);
   }
 
-  void registerDynamicInvocation(SourceString methodName, Selector selector) {
+  void registerDynamicInvocation(SourceString methodName,
+                                 Selector selector,
+                                 [bool inLoop]) {
     assert(selector !== null);
-    registerInvocation(methodName, selector);
+    registerInvocation(methodName, selector, inLoop);
   }
 
   void registerDynamicInvocationOf(Element element) {