cps-ir: Implement boolean conversion in and use it to implement '&&', '||', and '?:'.

tests/compiler/dart2js/js_backend_cps_ir_test.dart

Index: tests/compiler/dart2js/js_backend_cps_ir_test.dart
diff --git a/tests/compiler/dart2js/js_backend_cps_ir_test.dart b/tests/compiler/dart2js/js_backend_cps_ir_test.dart
index df21e239e9825f043c0d19478d6a0a47c1e64cb8..68df2f10ffdb6776199eac45ce5f7e77e5813b3f 100644
--- a/tests/compiler/dart2js/js_backend_cps_ir_test.dart
+++ b/tests/compiler/dart2js/js_backend_cps_ir_test.dart
@@ -68,6 +68,39 @@ main() { return foo(); }
 function() {
   return null;
 }"""),
+  const TestEntry("main() { return true ? 42 : 'foo'; }"),
+  const TestEntry("""
+foo() => foo;
+main() {
+  print(foo() ? "hello world" : "bad bad");
+}""",
+"""function() {
+  P.print(P.identical(V.foo(), true) ? "hello world" : "bad bad");
+  return null;
+}"""),
+  const TestEntry("""
+get foo => foo;
+main() {
+  print(foo ? "hello world" : "bad bad");
+}""",
+"""function() {
+  P.print(P.identical(V.foo(), true) ? "hello world" : "bad bad");
+  return null;
+}"""),
+  const TestEntry("""
+get foo => foo;
+main() { print(foo && foo); }""",
+"""function() {
+  P.print(P.identical(V.foo(), true) && P.identical(V.foo(), true));
+  return null;
+}"""),
+  const TestEntry("""
+get foo => foo;
+main() { print(foo || foo); }""",
+"""function() {
+  P.print(P.identical(V.foo(), true) || P.identical(V.foo(), true));
+  return null;
+}"""),
 ];
 
 String formatTest(Map test) {
@@ -92,7 +125,11 @@ main() {
         Expect.isNotNull(compiler.assembledCode);
         String expectation = test.expectation;
         if (expectation != null) {
-          Expect.equals(test.expectation, getCodeForMain(compiler));
+          String expected = test.expectation;
+          String found = getCodeForMain(compiler);
+          if (expected != found) {
+            Expect.fail('Expected:\n$expected\nbut found\n$found');
+          }
         }
       }).catchError((e) {
         print(e);