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// Copyright 2017 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() {
function foo(s) { return s.slice(-1); }
%PrepareFunctionForOptimization(foo);
assertEquals('', foo(''));
assertEquals('a', foo('a'));
assertEquals('b', foo('ab'));
assertEquals('c', foo('abc'));
%OptimizeFunctionOnNextCall(foo);
assertEquals('', foo(''));
assertEquals('a', foo('a'));
assertEquals('b', foo('ab'));
assertEquals('c', foo('abc'));
})();
(function() {
function foo(s) { return s.slice(-1, undefined); }
%PrepareFunctionForOptimization(foo);
assertEquals('', foo(''));
assertEquals('a', foo('a'));
assertEquals('b', foo('ab'));
assertEquals('c', foo('abc'));
%OptimizeFunctionOnNextCall(foo);
assertEquals('', foo(''));
assertEquals('a', foo('a'));
assertEquals('b', foo('ab'));
assertEquals('c', foo('abc'));
})();
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