dart2js: make "CREATE_JS_ISOLATE" an embedded global.

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

 // Copyright (c) 2012, 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.
 
 part of ssa;
 
 class SsaFunctionCompiler implements FunctionCompiler {
   SsaCodeGeneratorTask generator;
   SsaBuilderTask builder;
   SsaOptimizerTask optimizer;
@@ skipping 3866 matching lines @@
     visit(node.arguments.head);
     String isolateName = backend.namer.currentIsolate;
     SideEffects sideEffects = new SideEffects.empty();
     sideEffects.setAllSideEffects();
     push(new HForeign(js.js.parseForeignJS("$isolateName = #"),
                       backend.dynamicType,
                       <HInstruction>[pop()],
                       effects: sideEffects));
   }
 
-  void handleForeignCreateIsolate(ast.Send node) {
-    if (!node.arguments.isEmpty) {
-      compiler.internalError(node.argumentsNode, 'Too many arguments.');
-    }
-    String constructorName = backend.namer.isolateName;
-    push(new HForeign(js.js.parseForeignJS("new $constructorName()"),
-                      backend.dynamicType,
-                      <HInstruction>[]));
-  }
-
   void handleForeignDartObjectJsConstructorFunction(ast.Send node) {
     if (!node.arguments.isEmpty) {
       compiler.internalError(node.argumentsNode, 'Too many arguments.');
     }
     push(new HForeign(js.js.expressionTemplateYielding(
                           backend.emitter.typeAccess(compiler.objectClass)),
                       backend.dynamicType,
                       <HInstruction>[]));
   }
 
@@ skipping 14 matching lines @@
     } else if (name == 'JS_CURRENT_ISOLATE_CONTEXT') {
       handleForeignJsCurrentIsolateContext(node);
     } else if (name == 'JS_CALL_IN_ISOLATE') {
       handleForeignJsCallInIsolate(node);
     } else if (name == 'DART_CLOSURE_TO_JS') {
       handleForeignDartClosureToJs(node, 'DART_CLOSURE_TO_JS');
     } else if (name == 'RAW_DART_FUNCTION_REF') {
       handleForeignRawFunctionRef(node, 'RAW_DART_FUNCTION_REF');
     } else if (name == 'JS_SET_CURRENT_ISOLATE') {
       handleForeignSetCurrentIsolate(node);
-    } else if (name == 'JS_CREATE_ISOLATE') {
-      handleForeignCreateIsolate(node);
     } else if (name == 'JS_OPERATOR_IS_PREFIX') {
       // TODO(floitsch): this should be a JS_NAME.
       stack.add(addConstantString(backend.namer.operatorIsPrefix));
     } else if (name == 'JS_OBJECT_CLASS_NAME') {
       // TODO(floitsch): this should be a JS_NAME.
       String name = backend.namer.getRuntimeTypeName(compiler.objectClass);
       stack.add(addConstantString(name));
     } else if (name == 'JS_NULL_CLASS_NAME') {
       // TODO(floitsch): this should be a JS_NAME.
       String name = backend.namer.getRuntimeTypeName(compiler.nullClass);
@@ skipping 2941 matching lines @@
     if (unaliased is TypedefType) throw 'unable to unalias $type';
     unaliased.accept(this, builder);
   }
 
   void visitDynamicType(DynamicType type, SsaBuilder builder) {
     JavaScriptBackend backend = builder.compiler.backend;
     ClassElement cls = backend.findHelper('DynamicRuntimeType');
     builder.push(new HDynamicType(type, new TypeMask.exact(cls, classWorld)));
   }
 }