Dart2js option to dump info about compilation

sdk/lib/_internal/compiler/implementation/js_backend/backend.dart

Index: sdk/lib/_internal/compiler/implementation/js_backend/backend.dart
diff --git a/sdk/lib/_internal/compiler/implementation/js_backend/backend.dart b/sdk/lib/_internal/compiler/implementation/js_backend/backend.dart
index 82292e04722fea4e6529a0ecfe3d320795ac7b83..cb599d8ca7844d4ebd5cfab52b5327c784fcfc5c 100644
--- a/sdk/lib/_internal/compiler/implementation/js_backend/backend.dart
+++ b/sdk/lib/_internal/compiler/implementation/js_backend/backend.dart
@@ -168,6 +168,11 @@ class JavaScriptBackend extends Backend {
   SsaCodeGeneratorTask generator;
   CodeEmitterTask emitter;
 
+  CodeBuffer emitCodeFor(Element element) {

[ahe, 2013/11/27 19:28:53]

This method is unfortunately named as emitting normally is something that the
emitter takes care of.

I'd simply call this codeOf(element).

Also, try to follow this class layout:

Fields,
Constructors,
Accessors,
Methods,

Sometimes we intermix accessors and fields, but it really hurts readability in
my opinion.

Generally, when you add a new method to a class group it with related stuff (non
I suspect in this case) or add it to the end.

[sigurdm, 2013/11/29 10:39:37]

ok
done

+    if (generatedCode.containsKey(element)) return null;
+    return jsAst.prettyPrint(generatedCode[element], compiler);
+  }
+
   /**
    * The generated code as a js AST for compiled methods.
    */