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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 variable index access to rest parameters
// with up to 2 elements.
(function testRestParametersVariableIndex() {
function g(...args) {
let s = 0;
for (let i = 0; i < args.length; ++i) s += args[i];
return s;
}
function f(x, y) {
// (a) args[i] is dead code since args.length is 0.
const a = g();
// (b) args[i] always yields the first element.
const b = g(x);
// (c) args[i] can yield either x or y.
const c = g(x, y);
return a + b + c;
}
assertEquals(4, f(1, 2));
assertEquals(5, f(2, 1));
%OptimizeFunctionOnNextCall(f);
assertEquals(4, f(1, 2));
assertEquals(5, f(2, 1));
})();
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