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12478684aa
PR-URL: https://github.com/nodejs/node/pull/33579 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Shelley Vohr <codebytere@gmail.com>
28 lines
797 B
JavaScript
28 lines
797 B
JavaScript
// 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: --allow-natives-syntax
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// Create a map where 'my_property' has HeapObject representation.
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const dummy_obj = {};
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dummy_obj.my_property = 'some HeapObject';
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dummy_obj.my_property = 'some other HeapObject';
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function gaga() {
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const obj = {};
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// Store a HeapNumber and then a Smi.
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// This must happen in a loop, even if it's only 2 iterations:
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for (let j = -3_000_000_000; j <= -1_000_000_000; j += 2_000_000_000) {
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obj.my_property = j;
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}
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// Trigger (soft) deopt.
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if (!%IsBeingInterpreted()) obj + obj;
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}
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%PrepareFunctionForOptimization(gaga);
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gaga();
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gaga();
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%OptimizeFunctionOnNextCall(gaga);
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gaga();
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