26 lines
662 B
JavaScript
26 lines
662 B
JavaScript
|
// Copyright 2024 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: --const-tracking-let --allow-natives-syntax
|
||
|
|
// Flags: --turbofan --no-always-turbofan --maglev --no-stress-maglev
|
||
|
|
// Flags: --sparkplug --no-always-sparkplug
|
||
|
|
|
||
|
|
let myConstant; // Uninitialized!
|
||
|
|
|
||
|
|
function foo() {
|
||
|
|
return myConstant;
|
||
|
|
}
|
||
|
|
|
||
|
|
%PrepareFunctionForOptimization(foo);
|
||
|
|
assertEquals(undefined, foo());
|
||
|
|
|
||
|
|
%OptimizeFunctionOnNextCall(foo);
|
||
|
|
assertEquals(undefined, foo());
|
||
|
|
assertOptimized(foo);
|
||
|
|
|
||
|
|
// Change myConstant.
|
||
|
|
myConstant = 43;
|
||
|
|
assertUnoptimized(foo);
|
||
|
|
assertEquals(43, foo());
|