Use elements/types in constants/values

pkg/compiler/lib/src/ssa/builder_kernel.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.
 
 import 'package:kernel/ast.dart' as ir;
 
 import '../closure.dart';
 import '../common.dart';
 import '../common/codegen.dart' show CodegenRegistry, CodegenWorkItem;
 import '../common/names.dart';
@@ skipping 1845 matching lines @@
     if (_unexpectedForeignArguments(invocation, 1, 1)) {
       // Result expected on stack.
       stack.add(graph.addConstantNull(closedWorld));
       return;
     }
     ir.Expression argument = invocation.arguments.positional.single;
     argument.accept(this);
     HInstruction argumentInstruction = pop();
     if (argumentInstruction is HConstant) {
       ConstantValue argumentConstant = argumentInstruction.constant;
-      if (argumentConstant is TypeConstantValue) {
+      if (argumentConstant is TypeConstantValue &&
+          argumentConstant.representedType is ResolutionInterfaceType) {
+        ResolutionInterfaceType type = argumentConstant.representedType;
         // TODO(sra): Check that type is a subclass of [Interceptor].
-        ConstantValue constant =
-            new InterceptorConstantValue(argumentConstant.representedType);
+        ConstantValue constant = new InterceptorConstantValue(type.element);
         HInstruction instruction = graph.addConstant(constant, closedWorld);
         stack.add(instruction);
         return;
       }
     }
 
     compiler.reporter.reportErrorMessage(astAdapter.getNode(invocation),
         MessageKind.WRONG_ARGUMENT_FOR_JS_INTERCEPTOR_CONSTANT);
     stack.add(graph.addConstantNull(closedWorld));
   }
@@ skipping 606 matching lines @@
     kernelBuilder.open(exitBlock);
     enterBlock.setBlockFlow(
         new HTryBlockInformation(
             kernelBuilder.wrapStatementGraph(bodyGraph),
             exception,
             kernelBuilder.wrapStatementGraph(catchGraph),
             kernelBuilder.wrapStatementGraph(finallyGraph)),
         exitBlock);
   }
 }