blob: 1cc005d558d78676b2ac17abf3b663631fd48a36 [file] [log] [blame]
// 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 --opt
// Test that NumberTrunc propagates kIdentifyZeros truncations.
(function() {
function foo(x) {
return Math.abs(Math.trunc(x * -2));
}
%PrepareFunctionForOptimization(foo);
assertEquals(2, foo(1));
assertEquals(4, foo(2));
%OptimizeFunctionOnNextCall(foo);
assertEquals(2, foo(1));
assertEquals(4, foo(2));
assertOptimized(foo);
// Now `foo` should stay optimized even if `x * -2` would produce `-0`.
assertEquals(0, foo(0));
assertOptimized(foo);
})();