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Issue 2440333002: [turbofan] Fix typed lowering of JSToLength. (Closed)
Patch Set: Created 4 years, 1 month ago
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1 // Copyright 2016 the V8 project authors. All rights reserved. 1 // Copyright 2016 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 // Flags: --allow-natives-syntax 5 // Flags: --allow-natives-syntax
6 6
7 function foo(x) { 7 function foo(o) { return %_ToLength(o.length); }
8 x = +x;
9 return (x > 0) ? x : 0 - x;
10 }
11 8
12 foo(1); 9 foo(new Array(4));
13 foo(-1); 10 foo(new Array(Math.pow(2, 32) - 1));
14 foo(0); 11 foo({length: 10});
15 %OptimizeFunctionOnNextCall(foo); 12 %OptimizeFunctionOnNextCall(foo);
16 assertEquals(2147483648, foo(-2147483648)); 13 foo({length: 10});
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