22 lines
598 B
JavaScript
22 lines
598 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: --allow-natives-syntax --maglev --no-use-ic
|
||
|
|
// Flags: --maglev-escape-analysis
|
||
|
|
|
||
|
|
function foo() {
|
||
|
|
// --no-use-ic guarantees a soft deopt here, so the allocation goes
|
||
|
|
// to deopt-info.
|
||
|
|
return [NaN,, NaN];
|
||
|
|
}
|
||
|
|
|
||
|
|
%PrepareFunctionForOptimization(foo);
|
||
|
|
foo();
|
||
|
|
%OptimizeMaglevOnNextCall(foo);
|
||
|
|
|
||
|
|
// When accessing the hole, we get an undefined.
|
||
|
|
assertEquals(foo()[1], undefined);
|
||
|
|
// We deopt.
|
||
|
|
assertFalse(isOptimized(foo));
|