Encode super calls via extra properties on prototypes.

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

Index: pkg/compiler/lib/src/ssa/codegen.dart
diff --git a/pkg/compiler/lib/src/ssa/codegen.dart b/pkg/compiler/lib/src/ssa/codegen.dart
index 6b1261faf32e745c497012e0ff96a05943a2a3af..6c023a50b65a5e6f64be5e690e31ef3e76f4e020 100644
--- a/pkg/compiler/lib/src/ssa/codegen.dart
+++ b/pkg/compiler/lib/src/ssa/codegen.dart
@@ -1682,14 +1682,23 @@ class SsaCodeGenerator implements HVisitor, HBlockInformationVisitor {
         registry.registerDynamicGetter(selector);
         registry.registerGetterForSuperMethod(node.element);
         methodName = backend.namer.invocationName(selector);
-      } else {
-        methodName = backend.namer.getNameOfInstanceMember(superMethod);
-      }
-      push(
+        push(

[ahe, 2014/11/25 09:33:03]

I assume this is because super getters aren't supported yet. I don't think it is
too hard to extend the tearOff code to handle this situation.

[herhut, 2014/11/25 14:03:20]

It simply was not common enough to optimize for.

           js.js('#.prototype.#.call(#)', [
-              backend.namer.elementAccess(superClass),
-              methodName, visitArguments(node.inputs, start: 0)]),
+            backend.namer.elementAccess(superClass),
+            methodName, visitArguments(node.inputs, start: 0)]),
+          node);
+      } else {
+        methodName =
+            backend.namer.getNameOfAliasedSuperMember(superMethod);
+        backend.registerAliasedSuperMember(superMethod);
+        use(node.inputs.first);

[ahe, 2014/11/25 09:33:03]

Is there a more descriptive name for this node?

[herhut, 2014/11/25 14:03:20]

The entire file uses [node] for the current node being processed. What it is
follows from the method you're in. While it can debated whether that is a good
idea or not, at least it currently is consistent.

[ahe, 2014/11/25 14:10:33]

What I meant is: Is there a more descriptive name for this expression:
"node.inputs.first". Often there is a getter with a more descriptive name.

If adding a getter isn't a great idea, then perhaps storing the node in a
variable with a descriptive name would help.

HInstruction descriptiveName = node.inputs.first;

[herhut, 2014/11/25 14:25:01]

Got you, there is. Done.

+        push(
+          js.js('#.#(#)', [
+            pop(), methodName,
+            visitArguments(node.inputs, start: 1)]),
           node);
+      }
+
     }
   }