aa4df5bc05
Landing define-class-fields microbencharks upstream before optimization so that the benefit is visible. Bug: v8:9888 Change-Id: Ie3bd2bd2cdd5710f43e398aa834985b5faa973d5 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2999030 Commit-Queue: Joyee Cheung <joyee@igalia.com> Reviewed-by: Shu-yu Guo <syg@chromium.org> Reviewed-by: Igor Sheludko <ishell@chromium.org> Reviewed-by: Marja Hölttä <marja@chromium.org> Cr-Commit-Position: refs/heads/master@{#76267}
97 lines
2.1 KiB
JavaScript
97 lines
2.1 KiB
JavaScript
// Copyright 2021 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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'use strict';
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const BENCHMARK_NAME = arguments[0];
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const TEST_TYPE = arguments[1];
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const optimize_param = arguments[2];
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let optimize;
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if (optimize_param == "opt") {
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optimize = true;
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} else if (optimize_param == "noopt"){
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optimize = false;
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} else {
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throw new Error("Unknown optimization configuration " + arguments.join(' '));
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}
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let klass;
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let i = 0;
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let array;
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class SinglePrivateFieldClass {
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#x = i;
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check() {
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return this.#x === i;
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}
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}
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class MultiPrivateFieldClass {
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#x = i;
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#y = i+1;
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#z = i+2;
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#q = i+3;
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#r = i+4;
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#a = i+5;
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check() {
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return this.#x + 1 === this.#y && this.#y + 1 === this.#z &&
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this.#z + 1 === this.#q && this.#q + 1 === this.#r &&
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this.#r + 1 === this.#a;
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}
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}
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switch (TEST_TYPE) {
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case "single":
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klass = SinglePrivateFieldClass;
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break;
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case "multiple":
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klass = MultiPrivateFieldClass;
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break;
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default:
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throw new Error("Unknown optimization configuration " + arguments.join(' '));
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}
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if (optimize) {
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%PrepareFunctionForOptimization(klass);
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} else {
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%NeverOptimizeFunction(klass);
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}
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function setUp() {
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array = [new klass(), new klass()];
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// Populate the array first to reduce the impact of
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// array allocations.
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for (let i = 0; i < LOCAL_ITERATIONS - 2; ++i) {
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array.push(array[0]);
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}
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if (optimize) {
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%OptimizeFunctionOnNextCall(klass);
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}
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}
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function runBenchmark() {
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for (let i = 0; i < LOCAL_ITERATIONS; ++i) {
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array[i] = new klass();
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}
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}
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function tearDown() {
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if (array.length < 3) {
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throw new Error(`Check failed, array length ${array.length}`);
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}
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for (const instance of array) {
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if (!instance.check())
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throw new Error(`instance.check() failed`);
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}
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}
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const DETERMINISTIC_RUNS = 1;
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const LOCAL_ITERATIONS = 10000;
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new BenchmarkSuite(`${BENCHMARK_NAME}`, [1000], [
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new Benchmark(
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`${BENCHMARK_NAME}-${TEST_TYPE}-${optimize_param}`,
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false, false, DETERMINISTIC_RUNS, runBenchmark, setUp, tearDown)
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]);
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