Register type constants through ConstantUse

pkg/compiler/lib/src/js_backend/impact_transformer.dart

 // Copyright (c) 2017, 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 js_backend.backend.impact_transformer;
 
 import '../common.dart';
 import '../common_elements.dart';
 import '../common/backend_api.dart' show ImpactTransformer;
 import '../common/codegen.dart' show CodegenImpact;
@@ skipping 328 matching lines @@
   final BackendHelpers _helpers;
   final BackendImpacts _impacts;
   final CheckedModeHelpers _checkedModeHelpers;
   final NativeData _nativeData;
   final RuntimeTypesNeed _rtiNeed;
   final NativeCodegenEnqueuer _nativeCodegenEnqueuer;
   final Namer _namer;
   final MirrorsData _mirrorsData;
   final OneShotInterceptorData _oneShotInterceptorData;
   final LookupMapAnalysis _lookupMapAnalysis;
-  final CustomElementsCodegenAnalysis _customElementsCodegenAnalysis;
   final RuntimeTypesChecksBuilder _rtiChecksBuilder;
 
   CodegenImpactTransformer(
       this._options,
       this._elementEnvironment,
       this._helpers,
       this._impacts,
       this._checkedModeHelpers,
       this._nativeData,
       this._rtiNeed,
       this._nativeCodegenEnqueuer,
       this._namer,
       this._mirrorsData,
       this._oneShotInterceptorData,
       this._lookupMapAnalysis,
-      this._customElementsCodegenAnalysis,
       this._rtiChecksBuilder);
 
   void onIsCheckForCodegen(
       ResolutionDartType type, TransformedWorldImpact transformed) {
     if (type.isDynamic) return;
     type = type.unaliased;
     _impacts.typeCheck.registerImpact(transformed, _elementEnvironment);
 
     bool inCheckedMode = _options.enableTypeAssertions;
     // [registerIsCheck] is also called for checked mode checks, so we
@@ skipping 22 matching lines @@
     }
     if (type is ResolutionInterfaceType &&
         _nativeData.isNativeClass(type.element)) {
       // We will neeed to add the "$is" and "$as" properties on the
       // JavaScript object prototype, so we make sure
       // [:defineProperty:] is compiled.
       _impacts.nativeTypeCheck.registerImpact(transformed, _elementEnvironment);
     }
   }
 
-  @override
   WorldImpact transformCodegenImpact(CodegenImpact impact) {
     TransformedWorldImpact transformed = new TransformedWorldImpact(impact);
 
     for (TypeUse typeUse in impact.typeUses) {
       ResolutionDartType type = typeUse.type;
       switch (typeUse.kind) {
         case TypeUseKind.INSTANTIATION:
           _lookupMapAnalysis.registerInstantiatedType(type);
           break;
         case TypeUseKind.IS_CHECK:
@@ skipping 35 matching lines @@
           classes, _namer);
     }
 
     if (impact.usesInterceptor) {
       if (_nativeCodegenEnqueuer.hasInstantiatedNativeClasses) {
         _impacts.interceptorUse
             .registerImpact(transformed, _elementEnvironment);
       }
     }
 
-    for (ClassElement element in impact.typeConstants) {
-      _customElementsCodegenAnalysis.registerTypeConstant(element);
-      _lookupMapAnalysis.registerTypeConstant(element);
-    }
-
     for (FunctionElement element in impact.asyncMarkers) {
       switch (element.asyncMarker) {
         case AsyncMarker.ASYNC:
           _impacts.asyncBody.registerImpact(transformed, _elementEnvironment);
           break;
         case AsyncMarker.SYNC_STAR:
           _impacts.syncStarBody
               .registerImpact(transformed, _elementEnvironment);
           break;
         case AsyncMarker.ASYNC_STAR:
           _impacts.asyncStarBody
               .registerImpact(transformed, _elementEnvironment);
           break;
       }
     }
 
     // TODO(johnniwinther): Remove eager registration.
     return transformed;
   }
 }