dart2js cps: Store the TypeMask for each primitive in a field.

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 31 matching lines @@
 
 class CpsFunctionCompiler implements FunctionCompiler {
   final ConstantSystem constantSystem;
   // TODO(karlklose): remove the compiler.
   final Compiler compiler;
   final Glue glue;
   final SourceInformationStrategy sourceInformationFactory;
 
   // TODO(karlklose,sigurdm): remove and update dart-doc of [compile].
   final FunctionCompiler fallbackCompiler;
+  TypeMaskSystem typeSystem;
 
   Tracer get tracer => compiler.tracer;
 
   IrBuilderTask get irBuilderTask => compiler.irBuilder;
 
   CpsFunctionCompiler(Compiler compiler, JavaScriptBackend backend,
                       SourceInformationStrategy sourceInformationFactory)
       : fallbackCompiler =
             new ssa.SsaFunctionCompiler(backend, sourceInformationFactory),
         this.sourceInformationFactory = sourceInformationFactory,
         constantSystem = backend.constantSystem,
         compiler = compiler,
         glue = new Glue(compiler);
 
   String get name => 'CPS Ir pipeline';
 
   JavaScriptBackend get backend => compiler.backend;
 
   /// Generates JavaScript code for `work.element`.
   js.Fun compile(CodegenWorkItem work) {
     AstElement element = work.element;
     return compiler.withCurrentElement(element, () {
+      typeSystem = new TypeMaskSystem(compiler);
       try {
         // TODO(karlklose): remove this fallback when we do not need it for
         // testing anymore.
         if (false) {
           compiler.log('Using SSA compiler for platform element $element');
           return fallbackCompiler.compile(work);
         }
 
         if (tracer != null) {
           tracer.traceCompilation(element.name, null);
@@ skipping 156 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));
   }
 }