e678a0f9a9
Use %_ToLength for TO_LENGTH, implemented via a ToLengthStub that supports a fast path for small integers. Everything else is still handled in the runtime. CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_nosnap_rel BUG=v8:4494 LOG=n Review URL: https://codereview.chromium.org/1412963002 Cr-Commit-Position: refs/heads/master@{#31358}
77 lines
2.1 KiB
JavaScript
77 lines
2.1 KiB
JavaScript
// Copyright 2015 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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// Flags: --allow-natives-syntax
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assertEquals(0, %ToLength(NaN));
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assertEquals(0, %_ToLength(NaN));
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assertEquals(0, %ToLength(-Infinity));
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assertEquals(0, %_ToLength(-Infinity));
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assertEquals(0, %ToLength(0));
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assertEquals(0, %_ToLength(0));
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assertEquals(0, %ToLength(.5));
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assertEquals(0, %_ToLength(.5));
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assertEquals(42, %ToLength(42.99999));
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assertEquals(42, %_ToLength(42.99999));
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assertEquals(9007199254740991, %ToLength(9007199254740991));
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assertEquals(9007199254740991, %_ToLength(9007199254740991));
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assertEquals(9007199254740991, %ToLength(Infinity));
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assertEquals(9007199254740991, %_ToLength(Infinity));
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assertEquals(0, %ToLength(null));
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assertEquals(0, %_ToLength(null));
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assertEquals(1, %ToLength(true));
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assertEquals(1, %_ToLength(true));
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assertEquals(0, %ToLength(false));
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assertEquals(0, %_ToLength(false));
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assertEquals(0, %ToLength(undefined));
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assertEquals(0, %_ToLength(undefined));
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assertEquals(0, %ToLength("-1"));
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assertEquals(0, %_ToLength("-1"));
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assertEquals(123, %ToLength("123"));
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assertEquals(123, %_ToLength("123"));
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assertEquals(0, %ToLength("random text"));
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assertEquals(0, %_ToLength("random text"));
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assertThrows(function() { %ToLength(Symbol.toPrimitive) }, TypeError);
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assertThrows(function() { %_ToLength(Symbol.toPrimitive) }, TypeError);
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var a = { toString: function() { return 54321 }};
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assertEquals(54321, %ToLength(a));
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assertEquals(54321, %_ToLength(a));
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var b = { valueOf: function() { return 42 }};
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assertEquals(42, %ToLength(b));
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assertEquals(42, %_ToLength(b));
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var c = {
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toString: function() { return "x"},
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valueOf: function() { return 123 }
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};
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assertEquals(123, %ToLength(c));
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assertEquals(123, %_ToLength(c));
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var d = {
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[Symbol.toPrimitive]: function(hint) {
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assertEquals("number", hint);
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return 987654321;
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}
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};
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assertEquals(987654321, %ToLength(d));
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assertEquals(987654321, %_ToLength(d));
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var e = new Date(0);
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assertEquals(0, %ToLength(e));
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assertEquals(0, %_ToLength(e));
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