GWT 2.4.0 optimizations on JSNI source

1 Test.java

/**
 * Run with -Dgwt.jjs.traceMethods=Test.* to see optimization progress, then view 
 * compiled JS to see what other rewriting happens
 * @author colin
 *
 */
public class Test implements EntryPoint {
  public native void onModuleLoad() /*-{
    //Strings appearing multiple times will be interned
    var a = {test:true};
    $wnd.alert(a["test"]);
    $wnd.alert(a["test"]);

    //using prompt to prevent excessive compilation
    //notice in final output that local var is renamed
    var str = $wnd.prompt("enter a string");
    //If blocks that wrap a simple statement will be turned into a ternary
    if (str.length == 0) {
      $wnd.alert("no string entered");
    }

    //Unreferenced functions get compiled out
    //and simple functions just get inlined
    function willBeCalled() {
      return "yes";
    }
    function wontBeCalled() {
      return "no";
    }

    //Note, however, that this pure function won't be optimized out
    willBeCalled();
  }-*/;
}

2 final optimizer passes

---------------------------
SCRIPT INITIAL:
---------------------------
function $onModuleLoad(){
  var a = {test:true};
  $wnd.alert(a['test']);
  $wnd.alert(a['test']);
  var str = $wnd.prompt('enter a string');
  if (str.length == 0) {
    $wnd.alert('no string entered');
  }
  function willBeCalled(){
    return 'yes';
  }

  function wontBeCalled(){
    return 'no';
  }

  willBeCalled();
}

---------------------------
StaticEvalVisitor:
---------------------------
function $onModuleLoad(){
  var a = {test:true};
  $wnd.alert(a['test']);
  $wnd.alert(a['test']);
  var str = $wnd.prompt('enter a string');
  str.length == 0 && $wnd.alert('no string entered');
  function willBeCalled(){
    return 'yes';
  }

  function wontBeCalled(){
    return 'no';
  }

  willBeCalled();
}

---------------------------
RemovalVisitor:
---------------------------
function $onModuleLoad(){
  var a = {test:true};
  $wnd.alert(a['test']);
  $wnd.alert(a['test']);
  var str = $wnd.prompt('enter a string');
  str.length == 0 && $wnd.alert('no string entered');
  function willBeCalled(){
    return 'yes';
  }

  willBeCalled();
}

---------------------------
StringVisitor:
---------------------------
function $onModuleLoad(){
  var a = {test:true};
  $wnd.alert(a[$intern_22]);
  $wnd.alert(a[$intern_22]);
  var str = $wnd.prompt('enter a string');
  str.length == 0 && $wnd.alert('no string entered');
  function willBeCalled(){
    return 'yes';
  }

  willBeCalled();
}

3 selected .nocache.html output with added whitespace

function Ig() {
  var a={test:true};
  $wnd.alert(a[hl]);
  $wnd.alert(a[hl]);
  var b=$wnd.prompt('enter a string');
  b.length==0&&$wnd.alert('no string entered');
  function c(){return 'yes'}
  c()
}