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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
(function TestOptimizedFastExpm1MinusZero() {
function foo() {
return Object.is(Math.expm1(-0), -0);
}
assertTrue(foo());
%OptimizeFunctionOnNextCall(foo);
assertTrue(foo());
})();
(function TestOptimizedExpm1MinusZeroSlowPath() {
function f(x) {
return Object.is(Math.expm1(x), -0);
}
function g() {
return f(-0);
}
f(0);
// Compile function optimistically for numbers (with fast inlined
// path for Math.expm1).
%OptimizeFunctionOnNextCall(f);
// Invalidate the optimistic assumption, deopting and marking non-number
// input feedback in the call IC.
f("0");
// Optimize again, now with non-lowered call to Math.expm1.
assertTrue(g());
%OptimizeFunctionOnNextCall(g);
assertTrue(g());
})();
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