kernel->ssa: implement assert statements

pkg/compiler/lib/src/options.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.
 
 library dart2js.src.options;
 
 import '../compiler.dart' show PackagesDiscoveryProvider;
 import 'commandline_options.dart' show Flags;
 
 /// Options used for parsing.
@@ skipping 179 matching lines @@
 
   /// Whether to emit URIs in the reflection metadata.
   final bool preserveUris;
 
   /// The locations of serialized data used for resolution.
   final List<Uri> resolutionInputs;
 
   /// The location of the serialized data from resolution.
   final Uri resolutionOutput;
 
-  // If `true`, sources are resolved and serialized.
+  /// If `true`, sources are resolved and serialized.
   final bool resolveOnly;
 
-  // If `true`, sources are only available from serialized data.
+  /// If `true`, sources are only available from serialized data.
   final bool compileOnly;
 
   /// URI where the compiler should generate the output source map file.
   final Uri sourceMapUri;
 
   /// The compiler is run from the build bot.
   final bool testMode;
 
   /// Whether to trust JS-interop annotations. (experimental)
   final bool trustJSInteropTypeAnnotations;
@@ skipping 521 matching lines @@
 }
 
 /// Locations of the platform descriptor files relative to the library root.
 const String _clientPlatform = "lib/dart_client.platform";
 const String _serverPlatform = "lib/dart_server.platform";
 const String _sharedPlatform = "lib/dart_shared.platform";
 
 const String _UNDETERMINED_BUILD_ID = "build number could not be determined";
 const bool _forceIncrementalSupport =
     const bool.fromEnvironment('DART2JS_EXPERIMENTAL_INCREMENTAL_SUPPORT');