[builtins] Array.prototype.filter implemented as a TurboFan code stub.

test/js-perf-test/Array/filter.js

+// Copyright 2014 the V8 project authors. All rights reserved.

[danno, 2017/03/20 16:58:38]

nit: Copyright date

[mvstanton, 2017/03/20 22:08:31]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+new BenchmarkSuite('Filter', [1000], [
+  new Benchmark('SmiFilter', false, false, 0,
+                Filter, SmiFilterSetup, ()=>{}),
+  new Benchmark('DoubleFilter', false, false, 0,
+                Filter, DoubleFilterSetup, ()=>{}),
+  new Benchmark('FastFilter', false, false, 0,
+                Filter, FastFilterSetup, ()=>{}),
+  new Benchmark('HoleySmiFilter', false, false, 0,
+                Filter, HoleySmiFilterSetup, ()=>{}),
+  new Benchmark('HoleyDoubleFilter', false, false, 0,
+                Filter, HoleyDoubleFilterSetup, ()=>{}),
+  new Benchmark('HoleyFastFilter', false, false, 0,
+                Filter, HoleyFastFilterSetup, ()=>{}),
+  new Benchmark('ObjectFilter', false, false, 0,
+                GenericFilter, ObjectFilterSetup, ()=>{}),
+]);
+
+var array;
+var func;
+var this_arg;
+var result;
+var array_size = 100;
+
+function Filter() {
+  result = array.filter(func, this_arg);
+}
+
+function GenericFilter() {
+  result = Array.prototype.filter.call(array, func, this_arg);
+}
+
+function SmiFilterSetup() {
+  array = new Array();
+  for (var i = 0; i < array_size; i++) array[i] = i;
+  func = (value, index, object) => { return value % 2 === 0; };
+}
+
+function HoleySmiFilterSetup() {
+  array = new Array(array_size);
+  for (var i = 0; i < array_size; i++) {
+    if (i % 2 === 0) array[i] = i;
+  }
+  func = (value, index, object) => { return value % 2 === 0; };
+}
+
+function DoubleFilterSetup() {
+  array = new Array();
+  for (var i = 0; i < array_size; i++) array[i] = (i + 0.5);
+  func = (value, index, object) => { return Math.floor(value) % 2 === 0; };
+}
+
+function HoleyDoubleFilterSetup() {
+  array = new Array(array_size);
+  for (var i = 0; i < array_size; i++) {
+    if (i != 3) {
+      array[i] = (i + 0.5);
+    }
+  }
+  func = (value, index, object) => { return Math.floor(value) % 2 === 0; };
+}
+
+function FastFilterSetup() {
+  array = new Array();
+  for (var i = 0; i < array_size; i++) array[i] = 'value ' + i;
+  func = (value, index, object) => { return index % 2 === 0; };
+}
+
+function HoleyFastFilterSetup() {
+  array = new Array(array_size);
+  for (var i = 0; i < array_size; i++) {
+    if (i % 2 != 0) {
+      array[i] = 'value ' + i;
+    }
+  }
+  func = (value, index, object) => { return index % 2 === 0; };
+}
+
+function ObjectFilterSetup() {
+  array = { length: array_size };
+  for (var i = 0; i < array_size; i++) {
+    array[i] = i;
+  }
+  func = (value, index, object) => { return index % 2 === 0; };
+}