5cf5e8184b
This CL removes - redundant perf tests for addition and subtraction - deprecated perf tests of addition without optimization - perf tests for error throwing Bug: v8:9407 Change-Id: Ib6c6015e1547ed87de071c430661cb2ad084c9ca Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4151201 Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by: Nico Hartmann <nicohartmann@chromium.org> Commit-Queue: Qifan Pan <panq@google.com> Cr-Commit-Position: refs/heads/main@{#85187}
125 lines
2.9 KiB
JavaScript
125 lines
2.9 KiB
JavaScript
// Copyright 2019 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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d8.file.execute('bigint-util.js');
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let initial_diff = 0n;
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let a = 0n;
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let random_bigints = [];
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// This dummy ensures that the feedback for benchmark.run() in the Measure
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// function from base.js is not monomorphic, thereby preventing the benchmarks
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// below from being inlined. This ensures consistent behavior and comparable
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// results.
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new BenchmarkSuite('Prevent-Inline-Dummy', [10000], [
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new Benchmark('Prevent-Inline-Dummy', true, false, 0, () => {})
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]);
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new BenchmarkSuite('Subtract-Zero', [1000], [
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new Benchmark('Subtract-Zero', true, false, 0, TestSubtractZero,
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SetUpTestSubtractZero)
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]);
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BITS_CASES.forEach((d) => {
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new BenchmarkSuite(`Subtract-SameSign-${d}`, [1000], [
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new Benchmark(`Subtract-SameSign-${d}`, true, false, 0,
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TestSubtractSameSign, () => SetUpTestSubtractSameSign(d))
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]);
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});
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BITS_CASES.forEach((d) => {
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new BenchmarkSuite(`Subtract-DifferentSign-${d}`, [1000], [
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new Benchmark(`Subtract-DifferentSign-${d}`, true, false, 0,
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TestSubtractDifferentSign, () => SetUpTestSubtractDifferentSign(d))
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]);
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});
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new BenchmarkSuite('Subtract-Random', [1000], [
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new Benchmark('Subtract-Random', true, false, 0, TestSubtractRandom,
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SetUpTestSubtractRandom)
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]);
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function SetUpTestSubtractSameSign(bits) {
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// Subtract a small random negative value from the maximal negative number to
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// make sure the result stays negative.
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initial_diff = -MaxBigIntWithBits(bits);
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a = -SmallRandomBigIntWithBits(bits);
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}
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function TestSubtractSameSign() {
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let diff = initial_diff;
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for (let i = 0; i < TEST_ITERATIONS; ++i) {
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diff = diff - a;
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}
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return diff;
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}
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function SetUpTestSubtractDifferentSign(bits) {
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// Subtract a small random negative value from a small positive value so that
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// the differnce stays positive but does not grow in digits.
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initial_diff = SmallRandomBigIntWithBits(bits);
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a = -SmallRandomBigIntWithBits(bits);
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}
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function TestSubtractDifferentSign() {
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let diff = initial_diff;
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for (let i = 0; i < TEST_ITERATIONS; ++i) {
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diff = diff - a;
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}
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return diff;
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}
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function SetUpTestSubtractRandom() {
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random_bigints = [];
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// RandomBigIntWithBits needs multiples of 4 bits.
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const max_in_4bits = RANDOM_BIGINTS_MAX_BITS / 4;
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for (let i = 0; i < TEST_ITERATIONS; ++i) {
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const bits = Math.floor(Math.random() * max_in_4bits) * 4;
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const bigint = RandomBigIntWithBits(bits);
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random_bigints.push(Math.random() < 0.5 ? -bigint : bigint);
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}
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}
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function TestSubtractRandom() {
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let diff = 0n;
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for (let i = 0; i < TEST_ITERATIONS; ++i) {
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diff = diff - random_bigints[i];
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}
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return diff;
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}
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function SetUpTestSubtractZero() {
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initial_diff = 42n;
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}
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function TestSubtractZero() {
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let diff = initial_diff;
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for (let i = 0; i < TEST_ITERATIONS; ++i) {
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diff = diff - 0n;
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}
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return diff;
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}
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