3329cbc8eb
This flag enables feedback allocation heuristics to be based on the function size. The threshold for feedback allocation is set to 12 * bytecode size to roughly mimic the allocation after 12 invocations. We tried 4 * bytecode size earlier and there were few memory regressions on real world pages. Speedometer improved by ~1% [1, 2]. This time trying with a higher factor this time to see if we still have speedometer improvements without any memory regressions. [1] https://bugs.chromium.org/p/chromium/issues/detail?id=1177124 [2] https://bugs.chromium.org/p/chromium/issues/detail?id=1177241 Change-Id: I39c7d4aaf90b948b07419e4598e2193b8355c067 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2752150 Commit-Queue: Mythri Alle <mythria@chromium.org> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Toon Verwaest <verwaest@chromium.org> Cr-Commit-Position: refs/heads/master@{#73369}
305 lines
10 KiB
JavaScript
305 lines
10 KiB
JavaScript
// Copyright 2013 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --allow-natives-syntax --nostress-opt --opt
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// Flags: --no-stress-flush-bytecode --no-lazy-feedback-allocation
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function test(f, iterations) {
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%PrepareFunctionForOptimization(f);
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f();
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f();
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// Some of the tests need to learn until they stabilize.
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let n = iterations ? iterations : 1;
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for (let i = 0; i < n; i++) {
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%OptimizeFunctionOnNextCall(f);
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f();
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%PrepareFunctionForOptimization(f);
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}
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// Assert that the function finally stabilized.
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assertOptimized(f);
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}
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test(function add() {
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assertEquals(2, 1 + 1);
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assertEquals(2.5, 1.25 + 1.25);
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assertSame(Infinity, Infinity + Infinity);
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assertSame(Infinity, Infinity + 3);
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assertSame(NaN, Infinity + (-Infinity));
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assertSame(NaN, NaN + 2);
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assertSame(-Infinity, 1 / (-0.0 + (-0.0)));
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assertSame(Infinity, 1 / (-0.0 + 0.0));
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});
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test(function inc() {
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var a = 1;
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var b = Infinity;
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var c = -Infinity;
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var d = NaN;
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assertEquals(2, ++a);
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assertSame(Infinity, ++b);
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assertSame(-Infinity, ++c);
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assertSame(NaN, ++d);
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});
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test(function dec() {
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var a = 1;
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var b = Infinity;
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var c = -Infinity;
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var d = NaN;
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assertEquals(0, --a);
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assertSame(Infinity, --b);
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assertSame(-Infinity, --c);
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assertSame(NaN, --d);
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});
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test(function sub() {
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assertEquals(0, 1 - 1);
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assertEquals(0.5, 1.5 - 1);
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assertSame(Infinity, Infinity - (-Infinity));
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assertSame(Infinity, Infinity - 3);
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assertSame(NaN, Infinity - Infinity);
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assertSame(NaN, NaN - 2);
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assertSame(-Infinity, 1 / (-0.0 - 0.0));
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assertSame(Infinity, 1 / (0.0 - 0.0));
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});
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test(function mul() {
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assertEquals(1, 1 * 1);
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assertEquals(2.25, 1.5 * 1.5);
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assertSame(Infinity, Infinity * Infinity);
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assertSame(-Infinity, Infinity * (-Infinity));
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assertSame(Infinity, Infinity * 3);
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assertSame(-Infinity, Infinity * (-3));
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assertSame(NaN, NaN * 3);
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assertSame(-Infinity, 1 / (-0.0 * 0.0));
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assertSame(Infinity, 1 / (0.0 * 0.0));
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});
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test(function div() {
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assertEquals(1, 1 / 1);
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assertEquals(1.5, 2.25 / 1.5);
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assertSame(NaN, Infinity / Infinity);
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assertSame(Infinity, Infinity / 3);
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assertSame(-Infinity, Infinity / (-3));
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assertSame(NaN, NaN / 3);
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assertSame(-Infinity, 1 / (-0.0));
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assertSame(Infinity, Infinity / 0.0);
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});
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test(function mathMin() {
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assertEquals(1, Math.min(1, 10));
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assertEquals(1.5, Math.min(1.5, 2.5));
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assertEquals(0, Math.min(Infinity, 0));
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assertSame(Infinity, Math.min(Infinity, Infinity));
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assertSame(-Infinity, Math.min(Infinity, -Infinity));
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assertSame(NaN, Math.min(NaN, 1));
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assertSame(Infinity, 1 / Math.min(0.0, 0.0));
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assertSame(-Infinity, 1 / Math.min(-0.0, -0.0));
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assertSame(-Infinity, 1 / Math.min(0.0, -0.0));
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});
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test(function mathMax() {
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assertEquals(10, Math.max(1, 10));
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assertEquals(2.5, Math.max(1.5, 2.5));
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assertEquals(Infinity, Math.max(Infinity, 0));
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assertSame(-Infinity, Math.max(-Infinity, -Infinity));
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assertSame(Infinity, Math.max(Infinity, -Infinity));
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assertSame(NaN, Math.max(NaN, 1));
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assertSame(Infinity, 1 / Math.max(0.0, 0.0));
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assertSame(-Infinity, 1 / Math.max(-0.0, -0.0));
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assertSame(Infinity, 1 / Math.max(0.0, -0.0));
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});
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test(function mathExp() {
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assertEquals(1.0, Math.exp(0.0));
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assertTrue(2.7 < Math.exp(1) && Math.exp(1) < 2.8);
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assertSame(Infinity, Math.exp(Infinity));
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assertEquals("0", String(Math.exp(-Infinity)));
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assertSame(NaN, Math.exp(NaN));
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});
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test(function mathLog() {
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assertEquals(0.0, Math.log(1.0));
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assertTrue(1 < Math.log(3) && Math.log(3) < 1.5);
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assertSame(Infinity, Math.log(Infinity));
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assertSame(NaN, Math.log(-Infinity));
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assertSame(NaN, Math.exp(NaN));
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});
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test(function mathSqrt() {
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assertEquals(1.0, Math.sqrt(1.0));
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assertSame(NaN, Math.sqrt(-1.0));
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assertSame(Infinity, Math.sqrt(Infinity));
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assertSame(NaN, Math.sqrt(-Infinity));
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assertSame(NaN, Math.sqrt(NaN));
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});
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test(function mathPowHalf() {
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assertEquals(1.0, Math.pow(1.0, 0.5));
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assertSame(NaN, Math.sqrt(-1.0));
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assertSame(Infinity, Math.pow(Infinity, 0.5));
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assertSame(NaN, Math.sqrt(-Infinity, 0.5));
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assertEquals(0, Math.pow(Infinity, -0.5));
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assertSame(NaN, Math.sqrt(-Infinity, -0.5));
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assertSame(NaN, Math.sqrt(NaN, 0.5));
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});
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test(function mathAbs() {
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assertEquals(1.5, Math.abs(1.5));
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assertEquals(1.5, Math.abs(-1.5));
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assertSame(Infinity, Math.abs(Infinity));
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assertSame(Infinity, Math.abs(-Infinity));
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assertSame(NaN, Math.abs(NaN));
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});
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test(function mathRound() {
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assertEquals(2, Math.round(1.5));
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assertEquals(-1, Math.round(-1.5));
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assertSame(Infinity, Math.round(Infinity));
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assertSame(-Infinity, Math.round(-Infinity));
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assertSame(Infinity, 1 / Math.round(0.0));
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assertSame(-Infinity, 1 / Math.round(-0.0));
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assertSame(NaN, Math.round(NaN));
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assertEquals(Math.pow(2, 52) + 1, Math.round(Math.pow(2, 52) + 1));
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});
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test(function mathFround() {
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assertTrue(isNaN(Math.fround(NaN)));
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assertSame(Infinity, 1 / Math.fround(0));
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assertSame(-Infinity, 1 / Math.fround(-0));
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assertSame(Infinity, Math.fround(Infinity));
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assertSame(-Infinity, Math.fround(-Infinity));
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assertSame(Infinity, Math.fround(1E200));
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assertSame(-Infinity, Math.fround(-1E200));
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assertEquals(3.1415927410125732, Math.fround(Math.PI));
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});
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test(function mathFloor() {
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assertEquals(1, Math.floor(1.5));
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assertEquals(-2, Math.floor(-1.5));
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assertSame(Infinity, Math.floor(Infinity));
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assertSame(-Infinity, Math.floor(-Infinity));
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assertSame(Infinity, 1 / Math.floor(0.0));
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assertSame(-Infinity, 1 / Math.floor(-0.0));
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assertSame(NaN, Math.floor(NaN));
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assertEquals(Math.pow(2, 52) + 1, Math.floor(Math.pow(2, 52) + 1));
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});
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test(function mathPow() {
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assertEquals(2.25, Math.pow(1.5, 2));
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assertTrue(1.8 < Math.pow(1.5, 1.5) && Math.pow(1.5, 1.5) < 1.9);
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assertSame(Infinity, Math.pow(Infinity, 0.5));
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assertSame(Infinity, Math.pow(-Infinity, 0.5));
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assertEquals(0, Math.pow(Infinity, -0.5));
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assertEquals(0, Math.pow(Infinity, -0.5));
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assertSame(Infinity, Math.pow(Infinity, Infinity));
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assertEquals(0, Math.pow(Infinity, -Infinity));
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assertSame(NaN, Math.pow(Infinity, NaN));
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assertSame(NaN, Math.pow(NaN, 2));
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});
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test(function stringAdd() {
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assertEquals("", "" + "");
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assertEquals("folded constant", "folded " + "constant");
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assertEquals("not folded constant1", "not folded constant" + 1);
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});
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test(function stringLength() {
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assertEquals(6, "abcdef".length);
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assertEquals(0, "".length);
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assertEquals(-5, { length: -5 }.length);
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});
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test(function stringCharAt() {
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assertEquals("c", "abc".charAt(2));
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assertEquals("", "abc".charAt(-1));
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assertEquals("", "abc".charAt(4));
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assertEquals("b", "abc".charAt(1.1));
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assertEquals("", "abc".charAt(4.1));
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assertEquals("", "abc".charAt(Infinity));
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assertEquals("", "abc".charAt(-Infinity));
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assertEquals("a", "abc".charAt(-0));
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assertEquals("a", "abc".charAt(+0));
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assertEquals("", "".charAt());
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assertEquals("", "abc".charAt(1 + 4294967295));
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}, 10);
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test(function stringCharCodeAt() {
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assertSame(99, "abc".charCodeAt(2));
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assertSame(NaN, "abc".charCodeAt(-1));
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assertSame(NaN, "abc".charCodeAt(4));
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assertSame(98, "abc".charCodeAt(1.1));
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assertSame(NaN, "abc".charCodeAt(4.1));
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assertSame(NaN, "abc".charCodeAt(Infinity));
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assertSame(NaN, "abc".charCodeAt(-Infinity));
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assertSame(97, "abc".charCodeAt(-0));
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assertSame(97, "abc".charCodeAt(+0));
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assertSame(NaN, "".charCodeAt());
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assertSame(NaN, "abc".charCodeAt(1 + 4294967295));
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}, 10);
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test(function stringCodePointAt() {
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assertSame(65533, "äϠ<C3A4>𝌆".codePointAt(2));
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assertSame(119558, "äϠ<C3A4>𝌆".codePointAt(3));
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assertSame(undefined, "äϠ<C3A4>".codePointAt(-1));
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assertSame(undefined, "äϠ<C3A4>".codePointAt(4));
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assertSame(992, "äϠ<C3A4>".codePointAt(1.1));
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assertSame(undefined, "äϠ<C3A4>".codePointAt(4.1));
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assertSame(undefined, "äϠ<C3A4>".codePointAt(Infinity));
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assertSame(undefined, "äϠ<C3A4>".codePointAt(-Infinity));
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assertSame(228, "äϠ<C3A4>".codePointAt(-0));
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assertSame(97, "aϠ<61>".codePointAt(+0));
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assertSame(undefined, "".codePointAt());
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assertSame(undefined, "äϠ<C3A4>".codePointAt(1 + 4294967295));
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}, 10);
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test(function stringFromCodePoint() {
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assertEquals(String.fromCodePoint(), "");
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assertEquals(String.fromCodePoint(-0), "\0");
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assertEquals(String.fromCodePoint(0), "\0");
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assertEquals(String.fromCodePoint(0x1D306), "\uD834\uDF06");
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assertEquals(
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String.fromCodePoint(0x1D306, 0x61, 0x1D307),
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"\uD834\uDF06a\uD834\uDF07");
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assertEquals(String.fromCodePoint(0x61, 0x62, 0x1D307), "ab\uD834\uDF07");
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assertEquals(String.fromCodePoint(false), "\0");
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assertEquals(String.fromCodePoint(null), "\0");
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}, 5);
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test(function stringFromCharCode() {
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assertEquals("！", String.fromCharCode(0x10FF01));
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}, 2);
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test(function int32Mod() {
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assertEquals(-0, -2147483648 % (-1));
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});
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test(function int32Div() {
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assertEquals(2147483648, -2147483648 / (-1));
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});
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