dart2js cps: Use CPS IR for patched functions and typed data.

pkg/compiler/lib/src/js_backend/codegen/task.dart

 // Copyright (c) 2014, 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.
 
 /// Generate code using the cps-based IR pipeline.
 library code_generator_task;
 
 import 'glue.dart';
 import 'codegen.dart';
 import 'unsugar.dart';
@@ skipping 44 matching lines @@
         glue = new Glue(compiler);
 
   String get name => 'CPS Ir pipeline';
 
   /// Generates JavaScript code for `work.element`.
   js.Fun compile(CodegenWorkItem work) {
     AstElement element = work.element;
     JavaScriptBackend backend = compiler.backend;
     return compiler.withCurrentElement(element, () {
       try {
-        ClassElement cls = element.enclosingClass;
-        String name = element.name;
-        String className = cls == null ? null : cls.name;
-        LibraryElement library = element.library;
-        String libraryName = library == null ? null : library.toString();
         // TODO(karlklose): remove this fallback.
         // Fallback for a few functions that we know require try-finally and
         // switch.
-        if (element.isNative ||
-            element.isPatched ||
-            libraryName == 'origin library(dart:typed_data)') {
+        if (element.isNative) {
           compiler.log('Using SSA compiler for platform element $element');
           return fallbackCompiler.compile(work);
         }
 
         if (tracer != null) {
           tracer.traceCompilation(element.name, null);
         }
         cps.FunctionDefinition cpsFunction = compileToCpsIR(element);
         cpsFunction = optimizeCpsIR(cpsFunction);
         tree_ir.FunctionDefinition treeFunction = compileToTreeIR(cpsFunction);
@@ skipping 141 matching lines @@
     // TODO(sigurdm): Make a better list of tasks.
     return <CompilerTask>[irBuilderTask]..addAll(fallbackCompiler.tasks);
   }
 
   js.Node attachPosition(js.Node node, AstElement element) {
     return node.withSourceInformation(
         sourceInformationFactory.createBuilderForContext(element)
             .buildDeclaration(element));
   }
 }