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e31f0a7d25
PR-URL: https://github.com/nodejs/node/pull/28918 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
24 lines
708 B
JavaScript
24 lines
708 B
JavaScript
// Copyright 2019 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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{
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function f() {
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for(let i = 0; i < 10; ++i){
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%PrepareFunctionForOptimization(f);
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try{
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// Carefully constructed by a fuzzer to use a new register for s(), whose
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// write is dead due to the unconditional throw after s()=N, but which is
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// read in the ({...g}) call, which therefore must also be marked dead and
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// elided.
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with(f&&g&&(s()=N)({...g})){}
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} catch {}
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%OptimizeOsr();
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}
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}
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%EnsureFeedbackVectorForFunction(f);
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f();
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}
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