dart2js cps: Change rewriting of equality operators.

tests/compiler/dart2js/js_backend_cps_ir_operators_test.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.
 
 // Tests of operators.
 
 library operators_tests;
 
 import 'js_backend_cps_ir.dart';
 
@@ skipping 22 matching lines @@
   print(foo ? "hello world" : "bad bad");
 }""","""
 function() {
   P.print(V.foo() ? "hello world" : "bad bad");
 }"""),
   const TestEntry("""
 get foo => foo;
 main() { print(foo && foo); }
 """, """
 function() {
-  P.print(V.foo() ? !!P.identical(V.foo(), true) : false);
+  P.print(V.foo() ? V.foo() === true : false);
 }"""),
   const TestEntry("""
 get foo => foo;
 main() { print(foo || foo); }
 ""","""
 function() {
-  P.print(V.foo() ? true : !!P.identical(V.foo(), true));
+  P.print(V.foo() ? true : V.foo() === true);
 }"""),
 
 // Needs interceptor calling convention
 //const TestEntry("""
 //class Foo {
 //  operator[]=(index, value) {
 //    print(value);
 //  }
 //}
 //main() {
@@ skipping 16 matching lines @@
   if (v0 < 0 || v0 >= list.length)
     H.ioore(list, v0);
   list[v0] = 6;
   P.print(list);
 }"""),
 ];
 
 void main() {
   runTests(tests);
 }