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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 --opt
// Test that NumberMax properly passes the kIdentifyZeros truncation.
(function() {
function foo(x) {
if (Math.max(x * -2, 1) == 1) return 0;
return 1;
}
assertEquals(0, foo(2));
assertEquals(1, foo(-1));
%OptimizeFunctionOnNextCall(foo);
assertEquals(0, foo(2));
assertEquals(1, foo(-1));
assertOptimized(foo);
// Now `foo` should stay optimized even if `x * -2` would produce `-0`.
assertEquals(0, foo(0));
assertOptimized(foo);
})();
// Test that NumberMax properly handles 64-bit comparisons.
(function() {
function foo(x) {
x = x|0;
return Math.max(x - 1, x + 1);
}
assertEquals(-Math.pow(2, 31) + 1, foo(-Math.pow(2, 31)));
assertEquals(Math.pow(2, 31), foo(Math.pow(2, 31) - 1));
%OptimizeFunctionOnNextCall(foo);
assertEquals(-Math.pow(2, 31) + 1, foo(-Math.pow(2, 31)));
assertEquals(Math.pow(2, 31), foo(Math.pow(2, 31) - 1));
})();
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