Add J-elements

pkg/compiler/lib/src/ssa/rasta_ssa_builder_task.dart

 // Copyright (c) 2016, 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.
+
+import '../common/tasks.dart';
 import '../elements/elements.dart';
 import '../io/source_information.dart';
 import '../js_backend/backend.dart' show JavaScriptBackend;
 import '../js_backend/element_strategy.dart' show ElementCodegenWorkItem;
 import '../kernel/kernel.dart';
 import '../world.dart';
 import 'builder.dart';
 import 'kernel_ast_adapter.dart';
 import 'nodes.dart';
 import 'builder_kernel.dart';
 
 /// Task for building SSA kernel IR generated from rasta.
-class RastaSsaBuilderTask extends SsaAstBuilderBase {
+class RastaSsaBuilder extends SsaAstBuilderBase {
   final SourceInformationStrategy sourceInformationFactory;
 
   String get name => 'SSA kernel builder';
 
-  RastaSsaBuilderTask(JavaScriptBackend backend, this.sourceInformationFactory)
-      : super(backend);
+  RastaSsaBuilder(CompilerTask task, JavaScriptBackend backend,
+      this.sourceInformationFactory)
+      : super(task, backend);
 
   HGraph build(ElementCodegenWorkItem work, ClosedWorld closedWorld) {
-    return measure(() {
+    return task.measure(() {
       if (handleConstantField(work, closedWorld)) {
         // No code is generated for `work.element`.
         return null;
       }
       MemberElement element = work.element.implementation;
       ResolvedAst resolvedAst = work.resolvedAst;
       Kernel kernel = backend.kernelTask.kernel;
       KernelAstAdapter astAdapter = new KernelAstAdapter(kernel, backend,
           work.resolvedAst, kernel.nodeToAst, kernel.nodeToElement);
       KernelAstTypeInferenceMap typeInferenceMap =
           new KernelAstTypeInferenceMap(astAdapter);
-      KernelSsaBuilder builder = new KernelSsaBuilder(
+      KernelSsaGraphBuilder builder = new KernelSsaGraphBuilder(
           element,
           element.contextClass,
-          astAdapter.getInitialKernelNode(element),
+          astAdapter.getMemberNode(element),
           backend.compiler,
           astAdapter,
           typeInferenceMap,
           astAdapter,
           closedWorld,
           backend.compiler.codegenWorldBuilder,
           work.registry,
           backend.compiler.closureDataLookup,
           sourceInformationFactory.createBuilderForContext(work.element),
           resolvedAst.kind == ResolvedAstKind.PARSED ? resolvedAst.node : null,
@@ skipping 13 matching lines @@
           name = "${element.name}";
         }
         backend.tracer.traceCompilation(name);
         backend.tracer.traceGraph('builder', graph);
       }
 
       return graph;
     });
   }
 }