One thing I'll mention out of band, is that the changes that switch from singletons created by JsProgram to instances seem to remove all of the "addCorrelator" stuff. Honestly, I don't know what that stuff is used for (SOYC?) but I wonder what the impact of removing it is.
http://gwt-code-reviews.appspot.com/1342801/diff/1/6 File dev/core/src/com/google/gwt/dev/jjs/impl/GenerateJavaScriptAST.java (left): http://gwt-code-reviews.appspot.com/1342801/diff/1/6#oldcode1596 dev/core/src/com/google/gwt/dev/jjs/impl/GenerateJavaScriptAST.java:1596: JsName entryName = topScope.findExistingName("$entry"); this is a change in semantics. In JsRootName, it forces identifiers to be not-obfuscatable (sensible, since most of them aren't, except for the GWT derived ones), but the patch forces $entry to be treated the same as "alert" or "getElementById". http://gwt-code-reviews.appspot.com/1342801/diff/1/8 File dev/core/src/com/google/gwt/dev/js/JsInliner.java (right): http://gwt-code-reviews.appspot.com/1342801/diff/1/8#newcode610 dev/core/src/com/google/gwt/dev/js/JsInliner.java:610: */ If this is intentional, it seems like JsCatchScope should be renamed then, as it seems somewhat bizarre when reading it. http://gwt-code-reviews.appspot.com/1342801/diff/1/14 File dev/core/src/com/google/gwt/dev/js/JsSymbolResolver.java (right): http://gwt-code-reviews.appspot.com/1342801/diff/1/14#newcode40 dev/core/src/com/google/gwt/dev/js/JsSymbolResolver.java:40: name = program.getScope().declareName(ident); I'm curious why the scope changed from root to top? http://gwt-code-reviews.appspot.com/1342801/diff/1/26 File dev/core/src/com/google/gwt/dev/js/ast/JsRootName.java (right): http://gwt-code-reviews.appspot.com/1342801/diff/1/26#newcode43 dev/core/src/com/google/gwt/dev/js/ast/JsRootName.java:43: public void setObfuscatable(boolean isObfuscatable) { Untrue, root names are not obfuscatable, but GWT derived ones (e.g. $entry) may be. Stuff like "addEventListener" isn't. http://gwt-code-reviews.appspot.com/1342801/show -- http://groups.google.com/group/Google-Web-Toolkit-Contributors