dart2js: Recanonicalize selectors in static fields between runs.

pkg/compiler/lib/src/compiler.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.
 
 library dart2js.compiler_base;
 
 import 'dart:async' show
     EventSink,
     Future;
 
@@ skipping 66 matching lines @@
 import 'js_backend/backend_helpers.dart' as js_backend show
     BackendHelpers;
 import 'js_backend/js_backend.dart' as js_backend show
     JavaScriptBackend;
 import 'library_loader.dart' show
     LibraryLoader,
     LibraryLoaderTask,
     LoadedLibraries;
 import 'mirrors_used.dart' show
     MirrorUsageAnalyzerTask;
+import 'common/names.dart' show
+    Selectors;
 import 'null_compiler_output.dart' show
     NullCompilerOutput,
     NullSink;
 import 'parser/diet_parser_task.dart' show
     DietParserTask;
 import 'parser/element_listener.dart' show
     ScannerOptions;
 import 'parser/parser_task.dart' show
     ParserTask;
 import 'patch_parser.dart' show
@@ skipping 738 matching lines @@
   Uri resolvePatchUri(String dartLibraryPath);
 
   Future runInternal(Uri uri) {
     // TODO(ahe): This prevents memory leaks when invoking the compiler
     // multiple times. Implement a better mechanism where we can store
     // such caches in the compiler and get access to them through a
     // suitably maintained static reference to the current compiler.
     StringToken.canonicalizedSubstrings.clear();
     Selector.canonicalizedValues.clear();
 
+    // The selector objects held in static fields must remain canonical.
+    for (Selector selector in Selectors.ALL) {
+      Selector.canonicalizedValues
+        .putIfAbsent(selector.hashCode, () => <Selector>[])
+        .add(selector);
+    }
+
     assert(uri != null || analyzeOnly || hasIncrementalSupport);
     return new Future.sync(() {
       if (librariesToAnalyzeWhenRun != null) {
         return Future.forEach(librariesToAnalyzeWhenRun, (libraryUri) {
           reporter.log('Analyzing $libraryUri ($buildId)');
           return libraryLoader.loadLibrary(libraryUri);
         });
       }
     }).then((_) {
       if (uri != null) {
@@ skipping 1203 matching lines @@
     if (element == null) return;
     if (_otherDependencies == null) {
       _otherDependencies = new Setlet<Element>();
     }
     _otherDependencies.add(element.implementation);
   }
 
   Iterable<Element> get otherDependencies {
     return _otherDependencies != null ? _otherDependencies : const <Element>[];
   }
-}
+}