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// Copyright 2018 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
// Test the case where TurboFan can statically rule out -0 from the
// Math.max type.
(function() {
function foo(x) {
// Arrange x such that TurboFan infers type [-inf, inf] \/ MinusZero.
x = +x;
x = Math.round(x);
return Object.is(-0, Math.max(1, x))
}
assertFalse(foo(-0));
assertFalse(foo(-1));
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo(-0));
assertFalse(foo(-1));
})();
// Test the case where -0 is ruled out because it's strictly less than +0.
(function() {
function foo(x) {
// Arrange x such that TurboFan infers type [-inf, inf] \/ MinusZero.
x = +x;
x = Math.round(x);
return Object.is(-0, Math.max(0, x))
}
assertFalse(foo(-0));
assertFalse(foo(-1));
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo(-0));
assertFalse(foo(-1));
})();
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