Introduces the new syntax for deferred loading

sdk/lib/_internal/compiler/implementation/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;
 
 /**
  * A special element for the extra parameter taken by intercepted
  * methods. We need to implement [TypedElement.type] because our
  * optimizers may look at its declared type.
@@ skipping 3550 matching lines @@
           'JavaScriptIndexingBehavior');
       stack.add(addConstantString(backend.namer.operatorIs(element)));
     } else if (name == 'JS_CURRENT_ISOLATE') {
       handleForeignJsCurrentIsolate(node);
     } else if (name == 'JS_GET_NAME') {
       handleForeignJsGetName(node);
     } else if (name == 'JS_EFFECT') {
       stack.add(graph.addConstantNull(compiler));
     } else if (name == 'JS_INTERCEPTOR_CONSTANT') {
       handleJsInterceptorConstant(node);
+    } else if (name == 'loadLibrary') {
+      // TODO(sigurdm): Also make it possible to closurize loadLibrary.
+      FunctionElement deferredLoader = elements[node];
+      Element loadFunction = compiler.loadLibraryFunction;
+      PrefixElement prefixElement = deferredLoader.enclosingElement;
+      String loadId =
+          compiler.deferredLoadTask.importDeferName[prefixElement.import];
+      var inputs = [graph.addConstantString(new ast.DartString.literal(loadId),
+                                            compiler)];
+      push(new HInvokeStatic(loadFunction, inputs, backend.nonNullType,
+                             targetCanThrow: false));
     } else {
       throw "Unknown foreign: ${selector}";
     }
   }
 
   generateSuperNoSuchMethodSend(ast.Send node,
                                 Selector selector,
                                 List<HInstruction> arguments) {
     String name = selector.name;
 
@@ skipping 2535 matching lines @@
     DartType unaliased = type.unalias(builder.compiler);
     if (unaliased is TypedefType) throw 'unable to unalias $type';
     unaliased.accept(this, builder);
   }
 
   void visitDynamicType(DynamicType type, SsaBuilder builder) {
     ClassElement cls = builder.compiler.findHelper('DynamicRuntimeType');
     builder.push(new HDynamicType(type, new TypeMask.exact(cls)));
   }
 }