591c92acac
This patch adds a micro-benchmark comparing Array#indexOf,
Array#includes, and a roughly equivalent `for` loop.
The benchmark can be used to measure any Array#{indexOf,includes}
optimizations we implement in the future.
Test:
tools/run_perf.py --binary-override-path=out/x64.release/d8 \
--filter=JSTests/ArrayIndexOfIncludesPolymorphic \
--extra-flags=--trace-turbo test/js-perf-test/JSTests.json
Bug: v8:8388
Change-Id: I9150d3e56e9d4cb2ffe6baa50ee8cddf8df0ac74
Reviewed-on: https://chromium-review.googlesource.com/c/1307430
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57156}
40 lines
1.3 KiB
JavaScript
40 lines
1.3 KiB
JavaScript
// Copyright 2017 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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(() => {
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// Make sure we inline the callback, pick up all possible TurboFan
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// optimizations.
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function RunOptFastReduce(multiple) {
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// Use of multiple variables in the callback function forces
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// context creation without escape analysis.
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//
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// Also, the arrow function requires inlining based on
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// SharedFunctionInfo.
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result = array.reduce((p, v, i, a) => p + multiple);
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}
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// Don't optimize because I want to optimize RunOptFastMap with a parameter
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// to be used in the callback.
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%NeverOptimizeFunction(OptFastReduce);
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function OptFastReduce() { RunOptFastReduce(3); }
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function side_effect(a) { return a; }
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%NeverOptimizeFunction(side_effect);
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function OptUnreliableReduce() {
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result = array.reduce(func, side_effect(array));
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}
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DefineHigherOrderTests([
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// name, test function, setup function, user callback
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['DoubleReduce', newClosure('reduce'), DoubleSetup, (p, v, i, o) => p + v],
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['SmiReduce', newClosure('reduce'), SmiSetup, (p, v, i, a) => p + 1],
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['FastReduce', newClosure('reduce'), FastSetup, (p, v, i, a) => p + v],
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['OptFastReduce', OptFastReduce, FastSetup, undefined],
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[
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'OptUnreliableReduce', OptUnreliableReduce, FastSetup, (p, v, i, a) => p = v
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]
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]);
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})();
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