Tear-off --fast-startup mode performance fix

pkg/compiler/lib/src/js_emitter/startup_emitter/fragment_emitter.dart

 // Copyright (c) 2015, 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 dart2js.js_emitter.startup_emitter.model_emitter;
 
 /// The name of the property that stores the tear-off getter on a static
 /// function.
 ///
 /// This property is only used when isolates are used.
@@ skipping 215 matching lines @@
   fun[#argumentCount] = requiredParameterCount;
   fun[#defaultArgumentValues] = optionalParameterDefaultValues;
   var reflectionInfo = funType;
   if (typeof reflectionInfo == "number") {
     // The reflectionInfo can either be a function, or a pointer into the types
     // table. If it points into the types-table we need to update the index,
     // in case the tear-off is part of a deferred hunk.
     reflectionInfo = reflectionInfo + typesOffset;
   }
   var name = funsOrNames[0];
+  fun.#stubName = name;
   var getterFunction =
       tearOff(funs, reflectionInfo, isStatic, name, isIntercepted);
   container[getterName] = getterFunction;
   if (isStatic) {
     fun.$tearOffPropertyName = getterFunction;
   }
 }
 
 // Instead of setting the interceptor tags directly we use this update
 // function. This makes it easier for deferred fragments to contribute to the
@@ skipping 202 matching lines @@
       'holdersList': new js.ArrayInitializer(nonStaticStateHolders
           .map((holder) => js.js("#", holder.name))
           .toList(growable: false)),
       'staticStateDeclaration': new js.VariableDeclaration(
           namer.staticStateHolder,
           allowRename: false),
       'staticState': js.js('#', namer.staticStateHolder),
       'constantHolderReference': buildConstantHolderReference(program),
       'holders': emitHolders(program.holders, fragment),
       'callName': js.string(namer.callNameField),
+      'stubName': js.string(namer.stubNameField),
       'argumentCount': js.string(namer.requiredParameterField),
       'defaultArgumentValues': js.string(namer.defaultValuesField),
       'prototypes': emitPrototypes(fragment),
       'inheritance': emitInheritance(fragment),
       'aliases': emitInstanceMethodAliases(fragment),
       'tearOffs': emitInstallTearOffs(fragment),
       'constants': emitConstants(fragment),
       'staticNonFinalFields': emitStaticNonFinalFields(fragment),
       'lazyStatics': emitLazilyInitializedStatics(fragment),
       'embeddedGlobals': emitEmbeddedGlobals(program, deferredLoadHashes),
@@ skipping 841 matching lines @@
     }
     statements.add(js.js.statement("setOrUpdateInterceptorsByTag(#);",
         js.objectLiteral(interceptorsByTag)));
     statements.add(
         js.js.statement("setOrUpdateLeafTags(#);", js.objectLiteral(leafTags)));
     statements.add(subclassAssignment);
 
     return new js.Block(statements);
   }
 }