dart2js cps: More interceptor optimizations and fixes.

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 63 matching lines @@
       printProperty("successors", block.succ.map((n) => n.name));
       printEmptyProperty("xhandlers");
       printEmptyProperty("flags");
       tag("states", () {
         tag("locals", () {
           printProperty("size", 0);
           printProperty("method", "None");
         });
       });
       tag("HIR", () {
+        String formatParameter(cps_ir.Parameter param) {
+          return '${names.name(param)} ${param.type}';
+        }
         if (entryPointParameters != null) {
-          String formatParameter(cps_ir.Parameter param) {
-            return '${names.name(param)} ${param.type}';
-          }
           String params = entryPointParameters.map(formatParameter).join(', ');
           printStmt('x0', 'Entry ($params)');
         }
-        for (cps_ir.Parameter param in block.parameters) {
-          String name = names.name(param);
-          printStmt(name, "Parameter $name [useCount=${countUses(param)}]");
-        }
+        String params = block.parameters.map(formatParameter).join(', ');
+        printStmt('x0', 'Parameters ($params)');
         visit(block.body);
       });
     });
   }
 
   void printStmt(String resultVar, String contents) {
     int bci = 0;
     int uses = 0;
     addIndent();
     add("$bci $uses $resultVar $contents <|@\n");
@@ skipping 215 matching lines @@
 
   visitCreateInstance(cps_ir.CreateInstance node) {
     String className = node.classElement.name;
     String arguments = node.arguments.map(formatReference).join(', ');
     String typeInformation =
         node.typeInformation.map(formatReference).join(', ');
     return 'CreateInstance $className ($arguments) <$typeInformation>';
   }
 
   visitInterceptor(cps_ir.Interceptor node) {
-    return "Interceptor(${formatReference(node.input)})";
+    return 'Interceptor(${formatReference(node.input)}, '
+           '${node.interceptedClasses})';
   }
 
   visitCreateFunction(cps_ir.CreateFunction node) {
     return "CreateFunction ${node.definition.element.name}";
   }
 
   visitGetMutable(cps_ir.GetMutable node) {
     String variable = names.name(node.variable.definition);
     return 'GetMutable $variable';
   }
@@ skipping 360 matching lines @@
   @override
   visitYield(cps_ir.Yield node) {
     addEdgeToContinuation(node.continuation);
   }
 
   @override
   visitRefinement(cps_ir.Refinement node) {
     unexpectedNode(node);
   }
 }