dart2js cps_ir: Use interceptors for is-checks.

pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart

 // Copyright (c) 2014, 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.ir_tracer;
 
 import 'dart:async' show EventSink;
 import 'cps_ir_nodes.dart' as cps_ir;
 import '../tracer.dart';
 
@@ skipping 331 matching lines @@
     String args = node.arguments.map(formatReference).join(', ');
     return "CreateInvocationMirror(${node.selector.name}, $args)";
   }
 
   visitTypeTest(cps_ir.TypeTest node) {
     String value = formatReference(node.value);
     String args = node.typeArguments.map(formatReference).join(', ');
     return "TypeTest ($value ${node.dartType} ($args))";
   }
 
+  visitTypeTestRaw(cps_ir.TypeTestRaw node) {
+    String value = formatReference(node.value);
+    String interceptor = node.interceptor == null
+        ? ''
+        : ' ${formatReference(node.interceptor)}';
+    return "TypeTestRaw ($value ${node.dartType}$interceptor)";

[sra1, 2015/10/06 06:47:58]

How is this tested?

+  }
+
   visitApplyBuiltinOperator(cps_ir.ApplyBuiltinOperator node) {
     String operator = node.operator.toString();
     String args = node.arguments.map(formatReference).join(', ');
     return 'ApplyBuiltinOperator $operator ($args)';
   }
 
   visitApplyBuiltinMethod(cps_ir.ApplyBuiltinMethod node) {
     String method = node.method.toString();
     String receiver = formatReference(node.receiver);
     String args = node.arguments.map(formatReference).join(', ');
@@ skipping 274 matching lines @@
   }
 
   visitCreateInvocationMirror(cps_ir.CreateInvocationMirror node) {
     unexpectedNode(node);
   }
 
   visitTypeTest(cps_ir.TypeTest node) {
     unexpectedNode(node);
   }
 
+  visitTypeTestRaw(cps_ir.TypeTestRaw node) {
+    unexpectedNode(node);
+  }
+
   visitApplyBuiltinOperator(cps_ir.ApplyBuiltinOperator node) {
     unexpectedNode(node);
   }
 
   visitApplyBuiltinMethod(cps_ir.ApplyBuiltinMethod node) {
     unexpectedNode(node);
   }
 
   visitGetLength(cps_ir.GetLength node) {
     unexpectedNode(node);
@@ skipping 32 matching lines @@
   @override
   visitYield(cps_ir.Yield node) {
     addEdgeToContinuation(node.continuation);
   }
 
   @override
   visitRefinement(cps_ir.Refinement node) {
     unexpectedNode(node);
   }
 }