[modules] Add a simple micro-benchmark for import/export accesses.

R=adamk@chromium.org
BUG=v8:1569

Review-Url: https://codereview.chromium.org/2833773002
Cr-Commit-Position: refs/heads/master@{#44811}

test/js-perf-test/JSTests.json

@@ -397,6 +397,22 @@
         {"name": "Let-Standard"},
         {"name": "Var-Standard"}
       ]
+    },
+    {
+      "name": "Modules",
+      "path": ["Modules"],
+      "main": "run.js",
+      "resources": ["basic-export.js", "basic-import.js", "basic-namespace.js", "value.js"],
+      "flags": [
+        "--allow-natives-syntax",
+        "--harmony-dynamic-import"
+      ],
+      "results_regexp": "^%s\\-Modules\\(Score\\): (.+)$",
+      "tests": [
+        {"name": "BasicExport"},
+        {"name": "BasicImport"},
+        {"name": "BasicNamespace"}
+      ]
     }
   ]
 }

test/js-perf-test/Modules/basic-export.js

+// Copyright 2017 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.
+
+export let value = 0;
+for (let i = 0; i < iterations; ++i) ++value;
+if (value != iterations) throw value;

test/js-perf-test/Modules/basic-import.js

+// Copyright 2017 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.
+
+import {value, set} from "value.js";
+for (let i = 0; i < iterations; ++i) set(value + 1);
+if (value != iterations) throw value;
+set(0);

test/js-perf-test/Modules/basic-namespace.js

+// Copyright 2017 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.
+
+import * as m from "value.js";
+for (let i = 0; i < iterations; ++i) m.set(m.value + 1);
+if (m.value != iterations) throw m.value;
+m.set(0);

test/js-perf-test/Modules/run.js

+// Copyright 2017 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.
+
+
+load('../base.js');
+
+
+new BenchmarkSuite('BasicExport', [100], [
+  new Benchmark('BasicExport', false, false, 0, BasicExport)
+]);
+
+new BenchmarkSuite('BasicImport', [100], [
+  new Benchmark('BasicImport', false, false, 0, BasicImport)
+]);
+
+new BenchmarkSuite('BasicNamespace', [100], [
+  new Benchmark('BasicNamespace', false, false, 0, BasicNamespace)
+]);
+
+
+const iterations = 3000000;
+
+
+function BasicExport() {
+  let success = false;
+  import("basic-export.js").then(_ => success = true);
+  %RunMicrotasks();
+  if (!success) throw new Error(666);
+}
+
+function BasicImport() {
+  let success = false;
+  import("basic-import.js").then(_ => success = true);
+  %RunMicrotasks();
+  if (!success) throw new Error(666);
+}
+
+function BasicNamespace() {
+  let success = false;
+  import("basic-namespace.js").then(_ => success = true);
+  %RunMicrotasks();
+  if (!success) throw new Error(666);
+}
+
+
+var success = true;
+
+function PrintResult(name, result) {
+  print(name + '-Modules(Score): ' + result);
+}
+
+function PrintError(name, error) {
+  PrintResult(name, error);
+  success = false;
+}
+
+
+BenchmarkSuite.config.doWarmup = undefined;
+BenchmarkSuite.config.doDeterministic = undefined;
+
+BenchmarkSuite.RunSuites({ NotifyResult: PrintResult,
+                           NotifyError: PrintError });

test/js-perf-test/Modules/value.js

+// Copyright 2017 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.
+
+export let value = 0;
+export function set(x) { value = x };