35 lines
838 B
JavaScript
35 lines
838 B
JavaScript
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// Copyright 2020 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 --no-always-opt
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function foo(n) {
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try {
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let v = 0n;
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for (let i = 0; i < n; ++i) {
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v = 3n + v;
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v = i;
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}
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} catch (e) {
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return 1;
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}
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return 0;
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}
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%PrepareFunctionForOptimization(foo);
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assertEquals(foo(1), 0);
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assertEquals(foo(1), 0);
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(foo(1), 0);
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assertOptimized(foo);
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%PrepareFunctionForOptimization(foo);
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assertEquals(foo(2), 1);
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assertUnoptimized(foo);
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// Check that we learned something and do not loop deoptimizations.
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(foo(1), 0);
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assertOptimized(foo);
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assertEquals(foo(2), 1);
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assertOptimized(foo);
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