28 lines
789 B
JavaScript
28 lines
789 B
JavaScript
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// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --opt --allow-natives-syntax --turbo --no-always-opt
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function f(b) {
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if (b == 1) {
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let a = a = 20;
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}
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}
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f(0);
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f(0);
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%OptimizeFunctionOnNextCall(f);
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f(0);
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assertOptimized(f);
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// Check that hole checks are handled correctly in optimized code.
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assertThrowsEquals(() => {f(1)}, ReferenceError());
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// The first time we introduce a deopt point so on hole f should deopt.
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assertUnoptimized(f);
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assertTrue(%GetDeoptCount(f) > 0);
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%OptimizeFunctionOnNextCall(f);
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f(0);
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assertThrowsEquals(() => {f(1)}, ReferenceError());
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// The second time it should generate normal control flow and not deopt.
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assertOptimized(f);
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