Micro benchmark for Try-Catch-Finally

test/js-perf-test/Exceptions/try-catch.js

Index: test/js-perf-test/Exceptions/try-catch.js
diff --git a/test/js-perf-test/Exceptions/try-catch.js b/test/js-perf-test/Exceptions/try-catch.js
new file mode 100644
index 0000000000000000000000000000000000000000..8c9734eb34307e3b326cd56fb98f111478cb1814
--- /dev/null
+++ b/test/js-perf-test/Exceptions/try-catch.js
@@ -0,0 +1,108 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+new BenchmarkSuite('Try-Catch', [1000], [
+  new Benchmark('OnSuccess', false, false, 0,
+                OnSuccess, OnSuccessSetup,
+                OnSuccessTearDown),
+  new Benchmark('OnException', false, false, 0,
+                OnException, OnExceptionSetup,
+                OnExceptionTearDown),
+  new Benchmark('OnSuccessFinallyOnly', false, false, 0,
+                OnSuccessFinallyOnly, OnSuccessFinallyOnlySetup,
+                OnSuccessFinallyOnlyTearDown),
+  new Benchmark('WithFinallyOnException', false, false, 0,
+                WithFinallyOnException, WithFinallyOnExceptionSetup, WithFinallyOnExceptionTearDown)

[arv (Not doing code reviews), 2015/06/03 14:10:00]

Long line

[Michael Hablich, 2015/06/03 14:26:47]

Done.

+]);
+
+var a;
+var b;
+var c;
+
+// ----------------------------------------------------------------------------
+
+function OnSuccessSetup() {
+  var a = 4;

[arv (Not doing code reviews), 2015/06/03 14:10:00]

What is the point of this setup function? It creates local variables that are
never used.

[Michael Hablich, 2015/06/03 14:26:48]

*facepalm* fixed.

+  var b = 6;
+  var c = 0;
+}
+
+function OnSuccess() {
+  try {
+    c = a + b;
+  }
+  catch (e) {
+  }
+}
+
+function OnSuccessTearDown() {
+  return c === 10;

[arv (Not doing code reviews), 2015/06/03 14:10:00]

This will return false because c is NaN

[Michael Hablich, 2015/06/03 14:26:47]

Done.

+}
+
+// ----------------------------------------------------------------------------
+
+function OnExceptionSetup() {
+  var a = 4;
+  var b = 6;
+  var c = 0;
+}
+
+function OnException() {
+  try {
+    throw 'Test exception';
+  }
+  catch (e) {
+    c = a + b;
+  }
+}
+
+function OnExceptionTearDown() {
+  return c === 10;
+}
+
+// ----------------------------------------------------------------------------
+
+function OnSuccessFinallyOnlySetup() {
+  var a = 4;
+  var b = 6;
+  var c = 0;
+}
+
+function OnSuccessFinallyOnly() {
+  try {
+    c = a + b;
+  }
+  finally {
+    c++;
+  }
+}
+
+function OnSuccessFinallyOnlyTearDown() {
+  return c === 11;
+}
+
+// ----------------------------------------------------------------------------
+
+function WithFinallyOnExceptionSetup() {
+  var a = 4;
+  var b = 6;
+  var c = 0;
+}
+
+function WithFinallyOnException() {
+  try {
+    throw 'Test exception';
+  }
+  catch (e) {
+    c = a + b;
+  }
+  finally {
+    c++;
+  }
+}
+
+function WithFinallyOnExceptionTearDown() {
+  return c === 11;
+}
+// ----------------------------------------------------------------------------