v8/test/js-perf-test/Array/find.js
Mike Stanton a0ab7d4527 [JSPerfTests] Refactoring in Array 2nd-order builtin tests
The (numbing) repetition in these tests were leading to errors when
writing new tests. Now a function DefineHigherOrderTests() can be
used to succinctly describe a test on (mostly) a single line.

Change-Id: I70d65ffd784a17bbf0b9ca2de477135c5d901794
Reviewed-on: https://chromium-review.googlesource.com/864144
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50590}
2018-01-15 16:32:27 +00:00

57 lines
1.7 KiB
JavaScript

// Copyright 2017 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.
(() => {
// Make sure we inline the callback, pick up all possible TurboFan
// optimizations.
function RunOptFast(multiple) {
// Use of variable multiple in the callback function forces
// context creation without escape analysis.
//
// Also, the arrow function requires inlining based on
// SharedFunctionInfo.
result = array.find((v, i, a) => v === `value ${multiple}`);
}
// Don't optimize because I want to optimize RunOptFast with a parameter
// to be used in the callback.
%NeverOptimizeFunction(OptFast);
function OptFast() { RunOptFast(max_index); }
function Naive() {
let index = -1;
const length = array == null ? 0 : array.length;
for (let index = 0; index < length; index++) {
const value = array[index];
if (func(value, index, array)) {
result = value;
break;
}
}
}
function NaiveSetup() {
// Prime Naive with polymorphic cases.
array = [1, 2, 3];
Naive();
Naive();
array = [3.4]; Naive();
array = new Array(10); array[0] = 'hello'; Naive();
SmiSetup();
delete array[1];
}
DefineHigherOrderTests([
// name, test function, setup function, user callback
"NaiveFindReplacement", Naive, NaiveSetup, v => v === max_index,
"DoubleFind", mc("find"), DoubleSetup, v => v === max_index + 0.5,
"SmiFind", mc("find"), SmiSetup, v => v === max_index,
"FastFind", mc("find"), FastSetup, v => v === `value ${max_index}`,
"GenericFind", mc("find", true), ObjectSetup, v => v === max_index,
"OptFastFind", OptFast, FastSetup, undefined
]);
})();