Allow intercepted calls to have typed selectors.

sdk/lib/_internal/compiler/implementation/js_backend/backend.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 js_backend;
 
 typedef void Recompile(Element element);
 
 class ReturnInfo {
   HType returnType;
@@ skipping 1093 matching lines @@
   }
 
   void addedDynamicSetter(Selector setter, HType type) {
     fieldTypes.addedDynamicSetter(setter, type);
   }
 
   HType optimisticFieldType(Element element) {
     return fieldTypes.optimisticFieldType(element);
   }
 
+  /**
+   * Return the checked mode helper name that will be needed to do a
+   * type check on [type] at runtime. Note that this method is being
+   * called both by the resolver with interface types (int, String,
+   * ...), and by the SSA backend with implementation types (JSInt,
+   * JSString, ...).
+   */
   SourceString getCheckedModeHelper(DartType type) {
     Element element = type.element;
     bool nativeCheck =
           emitter.nativeEmitter.requiresNativeIsCheck(element);
     if (type.isMalformed) {
       // Check for malformed types first, because the type may be a list type
       // with a malformed argument type.
       return const SourceString('malformedTypeCheck');
     } else if (type == compiler.types.voidType) {
       return const SourceString('voidTypeCheck');
-    } else if (element == compiler.stringClass) {
+    } else if (element == jsStringClass || element == compiler.stringClass) {
       return const SourceString('stringTypeCheck');
-    } else if (element == compiler.doubleClass) {
+    } else if (element == jsDoubleClass || element == compiler.doubleClass) {
       return const SourceString('doubleTypeCheck');
-    } else if (element == compiler.numClass) {
+    } else if (element == jsNumberClass || element == compiler.numClass) {
       return const SourceString('numTypeCheck');
-    } else if (element == compiler.boolClass) {
+    } else if (element == jsBoolClass || element == compiler.boolClass) {
       return const SourceString('boolTypeCheck');
-    } else if (element == compiler.functionClass) {
+    } else if (element == jsFunctionClass
+               || element == compiler.functionClass) {
       return const SourceString('functionTypeCheck');
-    } else if (element == compiler.intClass) {
+    } else if (element == jsIntClass || element == compiler.intClass) {
       return const SourceString('intTypeCheck');
     } else if (Elements.isNumberOrStringSupertype(element, compiler)) {
       return nativeCheck
           ? const SourceString('numberOrStringSuperNativeTypeCheck')
           : const SourceString('numberOrStringSuperTypeCheck');
     } else if (Elements.isStringOnlySupertype(element, compiler)) {
       return nativeCheck
           ? const SourceString('stringSuperNativeTypeCheck')
           : const SourceString('stringSuperTypeCheck');
-    } else if (identical(element, compiler.listClass)) {
+    } else if (element == compiler.listClass || element == jsArrayClass) {
       return const SourceString('listTypeCheck');
     } else {
       if (Elements.isListSupertype(element, compiler)) {
         return nativeCheck
             ? const SourceString('listSuperNativeTypeCheck')
             : const SourceString('listSuperTypeCheck');
       } else {
         return nativeCheck
             ? const SourceString('callTypeCheck')
             : const SourceString('propertyTypeCheck');
@@ skipping 47 matching lines @@
   }
 
   Element getSetRuntimeTypeInfo() {
     return compiler.findHelper(const SourceString('setRuntimeTypeInfo'));
   }
 
   Element getGetRuntimeTypeInfo() {
     return compiler.findHelper(const SourceString('getRuntimeTypeInfo'));
   }
 }