v8/test/mjsunit/regress/regress-unlink-closures-on-deopt.js
jarin fe704477d6 [deoptimizer] When deoptimizing code, unlink all functions referring to that code.
Drive by: remove two unused methods in optimized code visitor.

Review-Url: https://codereview.chromium.org/2730323002
Cr-Commit-Position: refs/heads/master@{#43611}
2017-03-06 12:22:05 +00:00

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779 B
JavaScript

// Copyright 2017 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 --noalways-opt
function foo() {
function g(o) {
return o.f;
}
return g;
}
let g1 = foo();
let g2 = foo();
g1({ f : 1});
g1({ f : 2});
g2({ f : 2});
g2({ f : 2});
%OptimizeFunctionOnNextCall(g1);
%OptimizeFunctionOnNextCall(g2);
g1({ f : 1});
g2({ f : 2});
g1({});
assertUnoptimized(g1);
// Deoptimization of g1 should also deoptimize g2 because they should share
// the optimized code object. (Unfortunately, this test bakes in various
// other assumptions about dealing with optimized code, and thus might break
// in future.)
assertUnoptimized(g2);
g2({});