cff862c036
BigInt performance benchmarks are restructured in JSTest1.json in such a way that it is easier to run meaningful subsets of BigInt test cases. Bug: v8:9213 Change-Id: Ibf94bfb0f14cf8afa890927d97f920659e8b28d0 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1872390 Commit-Queue: Nico Hartmann <nicohartmann@chromium.org> Reviewed-by: Georg Neis <neis@chromium.org> Cr-Commit-Position: refs/heads/master@{#64468}
148 lines
3.1 KiB
JavaScript
148 lines
3.1 KiB
JavaScript
// 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('bigint-util.js');
|
|
|
|
let initial_sum = 0n;
|
|
let a = 0n;
|
|
let random_bigints = [];
|
|
|
|
// 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', [10000], [
|
|
new Benchmark('Prevent-Inline-Dummy', true, false, 0, () => {})
|
|
]);
|
|
|
|
|
|
new BenchmarkSuite('Add-TypeError', [10000], [
|
|
new Benchmark('Add-TypeError', true, false, 0, TestAddTypeError,
|
|
SetUpTestAddTypeError)
|
|
]);
|
|
|
|
|
|
new BenchmarkSuite('Add-Zero', [1000], [
|
|
new Benchmark('Add-Zero', true, false, 0, TestAddZero, SetUpTestAddZero)
|
|
]);
|
|
|
|
|
|
BITS_CASES.forEach((d) => {
|
|
new BenchmarkSuite(`Add-SameSign-${d}`, [1000], [
|
|
new Benchmark(`Add-SameSign-${d}`, true, false, 0, TestAddSameSign,
|
|
() => SetUpTestAddSameSign(d))
|
|
]);
|
|
});
|
|
|
|
|
|
BITS_CASES.forEach((d) => {
|
|
new BenchmarkSuite(`Add-DifferentSign-${d}`, [1000], [
|
|
new Benchmark(`Add-DifferentSign-${d}`, true, false, 0,
|
|
TestAddDifferentSign, () => SetUpTestAddDifferentSign(d))
|
|
]);
|
|
});
|
|
|
|
|
|
new BenchmarkSuite('Add-Random', [1000], [
|
|
new Benchmark('Add-Random', true, false, 0, TestAddRandom,
|
|
SetUpTestAddRandom)
|
|
]);
|
|
|
|
|
|
function SetUpTestAddTypeError() {
|
|
initial_sum = 42n;
|
|
}
|
|
|
|
|
|
function TestAddTypeError() {
|
|
let sum = initial_sum;
|
|
for (let i = 0; i < SLOW_TEST_ITERATIONS; ++i) {
|
|
try {
|
|
sum = 0 + sum;
|
|
}
|
|
catch(e) {
|
|
}
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
|
|
function SetUpTestAddZero() {
|
|
initial_sum = 42n;
|
|
}
|
|
|
|
|
|
function TestAddZero() {
|
|
let sum = initial_sum;
|
|
|
|
for (let i = 0; i < TEST_ITERATIONS; ++i) {
|
|
sum = 0n + sum;
|
|
}
|
|
|
|
return sum;
|
|
}
|
|
|
|
|
|
function SetUpTestAddSameSign(bits) {
|
|
// Add two small random positive values to make sure the sum does not grow
|
|
// in digits.
|
|
initial_sum = SmallRandomBigIntWithBits(bits);
|
|
a = SmallRandomBigIntWithBits(bits);
|
|
}
|
|
|
|
|
|
function TestAddSameSign() {
|
|
let sum = initial_sum;
|
|
|
|
for (let i = 0; i < TEST_ITERATIONS; ++i) {
|
|
sum = a + sum;
|
|
}
|
|
|
|
return sum;
|
|
}
|
|
|
|
|
|
function SetUpTestAddDifferentSign(bits) {
|
|
// Add a small random negative value to a large positive one to make sure the
|
|
// sum does not shrink in digits.
|
|
initial_sum = MaxBigIntWithBits(bits);
|
|
a = -SmallRandomBigIntWithBits(bits);
|
|
}
|
|
|
|
|
|
function TestAddDifferentSign() {
|
|
let sum = initial_sum;
|
|
|
|
for (let i = 0; i < TEST_ITERATIONS; ++i) {
|
|
sum = a + sum;
|
|
}
|
|
|
|
return sum;
|
|
}
|
|
|
|
|
|
function SetUpTestAddRandom() {
|
|
random_bigints = [];
|
|
// RandomBigIntWithBits needs multiples of 4 bits.
|
|
const max_in_4bits = RANDOM_BIGINTS_MAX_BITS / 4;
|
|
for (let i = 0; i < TEST_ITERATIONS; ++i) {
|
|
const bits = Math.floor(Math.random() * max_in_4bits) * 4;
|
|
const bigint = RandomBigIntWithBits(bits);
|
|
random_bigints.push(Math.random() < 0.5 ? -bigint : bigint);
|
|
}
|
|
}
|
|
|
|
|
|
function TestAddRandom() {
|
|
let sum = 0n;
|
|
|
|
for (let i = 0; i < TEST_ITERATIONS; ++i) {
|
|
sum = random_bigints[i] + sum;
|
|
}
|
|
|
|
return sum;
|
|
}
|