v8/test/mjsunit/regress/regress-crbug-478612.js

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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
// This is used to force binary operations below to have tagged representation.
var z = {valueOf: function() { return 3; }};
function f() {
var y = -2;
return (1 & z) - y++;
}
assertEquals(3, f());
assertEquals(3, f());
%OptimizeFunctionOnNextCall(f);
assertEquals(3, f());
function g() {
var y = 2;
return (1 & z) | y++;
}
assertEquals(3, g());
assertEquals(3, g());
%OptimizeFunctionOnNextCall(g);
assertEquals(3, g());
function h() {
var y = 3;
return (3 & z) & y++;
}
assertEquals(3, h());
assertEquals(3, h());
%OptimizeFunctionOnNextCall(h);
assertEquals(3, h());
function i() {
var y = 2;
return (1 & z) ^ y++;
}
assertEquals(3, i());
assertEquals(3, i());
%OptimizeFunctionOnNextCall(i);
assertEquals(3, i());