5edec0e39a
PR-URL: https://github.com/nodejs/node/pull/55014 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
19 lines
644 B
JavaScript
19 lines
644 B
JavaScript
// Copyright 2023 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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//
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// Flags: --maglev --allow-natives-syntax
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function f(x) {
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x++; // Making sure that {x} has a Float64 alternative
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let phi = x ? 0 : x; // Creating a Phi whose inputs are Smi and Float64
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const obj = { "d" : phi }; // Storing the Phi in a Smi field, which will
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// insert a CheckSmi
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--phi; // Using the Smi as an Int32, which will insert a UnsafeSmiUntag
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}
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%PrepareFunctionForOptimization(f);
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f(1.5);
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%OptimizeMaglevOnNextCall(f);
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f(1.5);
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