v8/test/mjsunit/compiler/deopt-lazy-shape-mutation.js
Ross McIlroy 31a3cfbc10 [Test] Add PrepareForOptimization to mjsunit/compiler
BUG=v8:8801

Change-Id: I9d9d9824c6c9ad0176bbfd3723da1b578b17c256
Reviewed-on: https://chromium-review.googlesource.com/c/1495555
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60001}
2019-03-04 12:25:41 +00:00

25 lines
464 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
var b = false;
function change_o() {
if (b) o = { y : 1, x : 0};
}
%NeverOptimizeFunction(change_o);
var o = { x : 1 };
function f() {
change_o();
return o.x;
}
%PrepareFunctionForOptimization(f);
f(); f();
%OptimizeFunctionOnNextCall(f);
b = true;
f();