regress-905555-2.js 657 Bytes
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// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Flags: --allow-natives-syntax --block-concurrent-recompilation --noalways-opt

global = 1;

function boom(value) {
  return global;
}

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%PrepareFunctionForOptimization(boom);
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assertEquals(1, boom());
assertEquals(1, boom());
%OptimizeFunctionOnNextCall(boom, "concurrent");
assertEquals(1, boom());

delete this.global;

%UnblockConcurrentRecompilation();

// boom should be deoptimized because the global property cell has changed.
assertUnoptimized(boom, "sync");

assertThrows(boom);