62719c5fd2
PR-URL: https://github.com/nodejs/node/pull/40178 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
68 lines
1.3 KiB
JavaScript
68 lines
1.3 KiB
JavaScript
// Copyright 2014 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 --expose-gc
|
|
|
|
function Ctor() {
|
|
this.a = 1;
|
|
}
|
|
|
|
function get_closure() {
|
|
return function add_field(obj) {
|
|
obj.c = 3;
|
|
obj.a = obj.a + obj.c;
|
|
return obj.a;
|
|
}
|
|
}
|
|
function get_closure2() {
|
|
return function cc(obj) {
|
|
obj.c = 3;
|
|
obj.a = obj.a + obj.c;
|
|
}
|
|
}
|
|
|
|
function dummy() {
|
|
(function () {
|
|
var o = {c: 10};
|
|
var f1 = get_closure2();
|
|
%PrepareFunctionForOptimization(f1);
|
|
f1(o);
|
|
f1(o);
|
|
%OptimizeFunctionOnNextCall(f1);
|
|
f1(o);
|
|
})();
|
|
}
|
|
|
|
var o = new Ctor();
|
|
function opt() {
|
|
(function () {
|
|
var f1 = get_closure();
|
|
%PrepareFunctionForOptimization(f1);
|
|
f1(new Ctor());
|
|
f1(new Ctor());
|
|
%OptimizeFunctionOnNextCall(f1);
|
|
f1(o);
|
|
})();
|
|
}
|
|
|
|
// Optimize add_field and install its code in optimized code cache.
|
|
opt();
|
|
opt();
|
|
opt();
|
|
|
|
// Optimize dummy function to remove the add_field from head of optimized
|
|
// function list in the context.
|
|
dummy();
|
|
dummy();
|
|
|
|
// Kill add_field in new space GC.
|
|
for(var i = 0; i < 3; i++) gc(true);
|
|
|
|
// Trigger deopt.
|
|
o.c = 2.2;
|
|
|
|
// Fetch optimized code of add_field from cache and crash.
|
|
var f2 = get_closure();
|
|
f2(new Ctor());
|