Defer addStubs to class instantiation time.

pkg/compiler/lib/src/ssa/codegen_helpers.dart

Index: pkg/compiler/lib/src/ssa/codegen_helpers.dart
diff --git a/pkg/compiler/lib/src/ssa/codegen_helpers.dart b/pkg/compiler/lib/src/ssa/codegen_helpers.dart
index c298e06bc32dbce718a3418bbf9c026f97daf853..8b373bb7096d4bfb767aebd72b984a7736f65d67 100644
--- a/pkg/compiler/lib/src/ssa/codegen_helpers.dart
+++ b/pkg/compiler/lib/src/ssa/codegen_helpers.dart
@@ -335,6 +335,8 @@ class SsaInstructionMerger extends HBaseVisitor {
 
   SsaInstructionMerger(this.generateAtUseSite, this.compiler);
 
+  JavaScriptBackend get backend => compiler.backend;
+
   void visitGraph(HGraph graph) {
     visitDominatorTree(graph);
   }
@@ -384,6 +386,24 @@ class SsaInstructionMerger extends HBaseVisitor {
     analyzeInputs(instruction, 0);
   }
 
+  void visitInvokeSuper(HInvokeSuper instruction) {
+    Element superMethod = instruction.element;
+    Selector selector = instruction.selector;
+    // If aliased super members cannot be used, we will generate code like
+    //
+    // C.prototype.method.call(instance)

[floitsch, 2015/03/11 13:59:34]

indent by 4.

[herhut, 2015/03/13 12:28:52]

Done.

+    //
+    // where instance is the [this] object for the method. In such a case, the
+    // get of prototype might be evaluted before instance is created if we

[floitsch, 2015/03/11 13:59:34]

evaluated

[herhut, 2015/03/13 12:28:52]

Done.

+    // generate instance at use site, which in turn might update the prototype
+    // after first access if we use lazy initialization.

[floitsch, 2015/03/11 13:59:34]

Also add to the comment, how you work around it?
(basically, from what I can see, you skip the first argument, the receiver).

For example:

In this case, we therefore don't allow the receiver (the first argument) to be
generated at use site, and only analyze all other arguments.

[herhut, 2015/03/13 12:28:52]

Done.

+    if (!backend.canUseAliasedSuperMember(superMethod, selector)) {
+      analyzeInputs(instruction, 1);
+    } else {
+      super.visitInvokeSuper(instruction);
+    }
+  }
+
   void visitIs(HIs instruction) {
     // In the general case the input might be used multple multiple times, so it
     // must not be set generate at use site.  If the code will generate