deopt-recursive-eager-once.js 626 Bytes
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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.

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// Flags: --allow-natives-syntax --opt --no-always-opt
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function foo(i, deopt = false) {
    if (i == 0) {
        if (deopt) {
            // Trigger an eager deopt.
            %_DeoptimizeNow();
        }
    } else {
        foo(i - 1, deopt);
    }
}
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%PrepareFunctionForOptimization(foo);
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%PrepareFunctionForOptimization(foo);
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foo(10);
foo(10);
%OptimizeFunctionOnNextCall(foo);
foo(10);

assertOptimized(foo);

foo(10, true);

assertUnoptimized(foo);