[js-perf-test] Add perf test for BigInt's ToBoolean

This cl also adds a separate test suite for BigInts

Bug: v8:9213
Change-Id: I57271eed0f9c33a543fe15550964d55e3df3e963
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1596728
Commit-Queue: Nico Hartmann <nicohartmann@google.com>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Tamer Tas <tmrts@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61282}

test/js-perf-test/BigInt/run.js

+// Copyright 2019 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.
+
+"use strict";
+
+load('../base.js');
+load('to-boolean.js');
+
+
+var success = true;
+
+function PrintResult(name, result) {
+  print(name + '-BigInt(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/BigInt/to-boolean.js

+// Copyright 2019 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.
+
+"use strict";
+
+const ITERATIONS = 10000;
+
+// This dummy ensures that the feedback for benchmark.run() in the Measure function
+// from base.js is not monomorphic, thereby preventing the benchmarks below from being inlined.
+// This ensures consistent behavior and comparable results.
+new BenchmarkSuite('Prevent-Inline-Dummy', [1000], [
+  new Benchmark('Prevent-Inline-Dummy', true, false, 0, () => {})
+]);
+
+new BenchmarkSuite('BigInt-ToBoolean', [1000], [
+  new Benchmark('BigInt-ToBoolean', true, false, 0, TestToBoolean),
+]);
+
+new BenchmarkSuite('BigInt-BooleanConstructor', [1000], [
+  new Benchmark('BigInt-BooleanConstructor', true, false, 0, TestBooleanConstructor),
+]);
+
+
+function TestBooleanConstructor() {
+  let kl = true;
+  for (let i = 0; i < ITERATIONS; ++i) {
+    // Store to a variable to prevent elimination.
+    // Keep a depedency on the loop counter to prevent hoisting.
+    kl = Boolean(i % 2 == 0 ? 42n : 32n);
+  }
+  return kl;
+}
+
+
+function TestToBoolean() {
+  let kl = true;
+  for (let i = 0; i < ITERATIONS; ++i) {
+    // Store to a variable to prevent elimination.
+    // Keep a depedency on the loop counter to prevent hoisting.
+    kl = (i % 2 == 0 ? 42n : 32n) ? true : false;
+  }
+  return kl;
+}

test/js-perf-test/JSTests1.json

@@ -45,6 +45,19 @@
         {"name": "WeakSet-Constructor"}
       ]
     },
+    {
+      "name": "BigInt",
+      "path": ["BigInt"],
+      "main": "run.js",
+      "resources": [
+        "to-boolean.js"
+      ],
+      "results_regexp": "^%s\\-BigInt\\(Score\\): (.+)$",
+      "tests": [
+        { "name": "BigInt-ToBoolean" },
+        { "name": "BigInt-BooleanConstructor" }
+      ]
+    },
     {
       "name": "TypedArrays",
       "path": ["TypedArrays"],