Implement super-send to non-function.

dart/frog/leg/ssa/builder.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.
 
 class Interceptors {
   Compiler compiler;
   Interceptors(Compiler this.compiler);
 
   SourceString mapOperatorToMethodName(Operator op) {
     String name = op.source.stringValue;
@@ skipping 1884 matching lines @@
     }
   }
 
   visitSuperSend(Send node) {
     Selector selector = elements.getSelector(node);
     Element element = elements[node];
     if (element === null) {
       // Example: co19/Language/10_Expressions/25_Unary_Expressions_A06_t01
       compiler.unimplemented('unresolved super-send', node: node);
     }
-    if (element.kind.category != ElementCategory.FUNCTION) {
-      // Example:
-      // co19/Language/10_Expressions/14_Method_Invocation/3_Super_Invocation_A03_t04
-      compiler.unimplemented('super-send to non-function', node: node);
-    }
     HStatic target = new HStatic(element);
     HInstruction context = localsHandler.readThis();
     add(target);
     var inputs = <HInstruction>[target, context];
-    addStaticSendArgumentsToList(node, element, inputs);
-    push(new HInvokeSuper(selector, inputs));
+    if (element.kind == ElementKind.FUNCTION ||
+        element.kind == ElementKind.GENERATIVE_CONSTRUCTOR) {
+      addStaticSendArgumentsToList(node, element, inputs);
+      push(new HInvokeSuper(selector, inputs));
+    } else {
+      target = new HInvokeSuper(Selector.GETTER, inputs);
+      add(target);
+      inputs = <HInstruction>[target];
+      addDynamicSendArgumentsToList(node, inputs);
+      push(new HInvokeClosure(selector, inputs));
+    }
   }
 
   visitStaticSend(Send node) {
     Selector selector = elements.getSelector(node);
     Element element = elements[node];
     if (element.kind === ElementKind.GENERATIVE_CONSTRUCTOR) {
       compiler.resolver.resolveMethodElement(element);
       FunctionElement functionElement = element;
       element = functionElement.defaultImplementation;
     }
@@ skipping 879 matching lines @@
     HInstruction concat = new HAdd(target, left, right);
     builder.add(concat);
     return concat;
   }
 
   HInstruction result() {
     flushAccumulator();
     return prefix;
   }
 }