Encode super calls via extra properties on prototypes.

sdk/lib/_internal/compiler/implementation/ssa/codegen.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of ssa;
 
 class SsaCodeGeneratorTask extends CompilerTask {
 
   final JavaScriptBackend backend;
 
@@ skipping 1664 matching lines @@
         // [world]. The emitter needs to know if it needs to emit a
         // bound closure for a method.
         TypeMask receiverType =
             new TypeMask.nonNullExact(superClass, compiler.world);
         selector = new TypedSelector(receiverType, selector, compiler.world);
         // TODO(floitsch): we know the target. We shouldn't register a
         // dynamic getter.
         registry.registerDynamicGetter(selector);
         registry.registerGetterForSuperMethod(node.element);
         methodName = backend.namer.invocationName(selector);
+        push(
+          js.js('#.prototype.#.call(#)', [
+            backend.namer.elementAccess(superClass),
+            methodName, visitArguments(node.inputs, start: 0)]),
+          node);
       } else {
-        methodName = backend.namer.getNameOfInstanceMember(superMethod);
+        methodName =
+            backend.namer.getNameOfAliasedSuperMember(superMethod);
+        backend.registerAliasedSuperMember(superMethod);
+        use(node.inputs.first);
+        push(
+          js.js('#.#(#)', [
+            pop(), methodName,
+            visitArguments(node.inputs, start: 1)]),
+          node);
       }
-      push(
-          js.js('#.prototype.#.call(#)', [
-              backend.namer.elementAccess(superClass),
-              methodName, visitArguments(node.inputs, start: 0)]),
-          node);
+
     }
   }
 
   visitFieldGet(HFieldGet node) {
     use(node.receiver);
     Element element = node.element;
     if (node.isNullCheck) {
       // We access a JavaScript member we know all objects besides
       // null and undefined have: V8 does not like accessing a member
       // that does not exist.
@@ skipping 1010 matching lines @@
   js.PropertyAccess accessHelper(String name) {
     Element helper = backend.findHelper(name);
     if (helper == null) {
       // For mocked-up tests.
       return js.js('(void 0).$name');
     }
     registry.registerStaticUse(helper);
     return backend.namer.elementAccess(helper);
   }
 }