c6a16c10dd
With bytecode flushing and lazy feedback allocation, we need to call %PrepareForOptimization before we call %OptimizeFunctionOnNextCall, ideally after declaring the function. Bug: v8:8801, v8:8394, v8:9183 Change-Id: I3fb257282a30f6526a376a3afdedb44786320d34 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1648255 Commit-Queue: Mathias Bynens <mathias@chromium.org> Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#62119}
120 lines
4.4 KiB
JavaScript
120 lines
4.4 KiB
JavaScript
// Copyright 2010 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
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// Test String.fromCharCode.
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// Test char codes larger than 0xffff.
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var expected = "";
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for (var i = 100; i < 500; i++) {
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expected += String.fromCharCode(i);
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}
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function testCharCodeTruncation() {
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var result = "";
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for (var i = 0x100000 + 100; i < 0x100000 + 500; i++) {
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result += String.fromCharCode(i);
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}
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assertEquals(String.fromCharCode(0xFFFF), String.fromCharCode(0xFFFFFFFF));
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return result;
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};
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%PrepareFunctionForOptimization(testCharCodeTruncation);
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assertEquals(expected, testCharCodeTruncation());
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assertEquals(expected, testCharCodeTruncation());
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%OptimizeFunctionOnNextCall(testCharCodeTruncation);
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assertEquals(expected, testCharCodeTruncation());
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// Test various receivers and arguments passed to String.fromCharCode.
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Object.prototype.fromCharCode = function(x) {
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return this;
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};
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var fcc = String.fromCharCode;
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var fcc2 = fcc;
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function constFun(x) {
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return function(y) {
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return x;
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};
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}
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function test(num) {
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assertEquals(" ", String.fromCharCode(0x20));
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assertEquals(" ", String.fromCharCode(0x20 + 0x10000));
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assertEquals(" ", String.fromCharCode(0x20 - 0x10000));
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assertEquals(" ", String.fromCharCode(0x20 + 0.5));
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assertEquals("\u1234", String.fromCharCode(0x1234));
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assertEquals("\u1234", String.fromCharCode(0x1234 + 0x10000));
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assertEquals("\u1234", String.fromCharCode(0x1234 - 0x10000));
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assertEquals("\u1234", String.fromCharCode(0x1234 + 0.5));
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assertEquals(" ", String.fromCharCode(0x20, 0x20));
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assertEquals(" ", String.fromCharCode(0x20 + 0.5, 0x20));
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assertEquals(" ", fcc(0x20));
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assertEquals(" ", fcc(0x20 + 0x10000));
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assertEquals(" ", fcc(0x20 - 0x10000));
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assertEquals(" ", fcc(0x20 + 0.5));
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assertEquals("\u1234", fcc(0x1234));
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assertEquals("\u1234", fcc(0x1234 + 0x10000));
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assertEquals("\u1234", fcc(0x1234 - 0x10000));
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assertEquals("\u1234", fcc(0x1234 + 0.5));
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assertEquals(" ", fcc(0x20, 0x20));
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assertEquals(" ", fcc(0x20 + 0.5, 0x20));
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var receiver = num < 5 ? String : num < 9 ? 'dummy' : 42;
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fcc2 = num < 5 ? fcc :
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num < 9 ? constFun(Object('dummy')) : constFun(Object(42));
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var expected = num < 5 ? ' ' : num < 9 ? Object('dummy') : Object(42);
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assertEquals(expected, receiver.fromCharCode(0x20));
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assertEquals(expected, receiver.fromCharCode(0x20 - 0x10000));
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assertEquals(expected, receiver.fromCharCode(0x20 + 0.5));
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assertEquals(expected, fcc2(0x20));
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assertEquals(expected, fcc2(0x20 - 0x10000));
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assertEquals(expected, fcc2(0x20 + 0.5));
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}
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// Use loop to test the custom IC.
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for (var i = 0; i < 10; i++) {
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test(i);
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}
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// Test the custom IC works correctly when the map changes.
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for (var i = 0; i < 10; i++) {
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var expected = i < 5 ? ' ' : 42;
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if (i == 5)
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String.fromCharCode = function() {
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return 42;
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};
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assertEquals(expected, String.fromCharCode(0x20));
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}
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