mirror of
https://github.com/nodejs/node.git
synced 2025-05-15 12:45:25 +00:00
ed74896b1f
PR-URL: https://github.com/nodejs/node/pull/27375 Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
22 lines
611 B
JavaScript
22 lines
611 B
JavaScript
// Copyright 2019 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
|
|
|
|
function foo(o) { return {...o}; }
|
|
|
|
// Warmup the CloneObjectIC with `o.x` being
|
|
// a HeapObject field.
|
|
var o = {data:null};
|
|
%PrepareFunctionForOptimization(foo);
|
|
foo(o);
|
|
foo(o);
|
|
|
|
// Now update the field representation of o.x
|
|
// in-place from HeapObject to Tagged and make
|
|
// sure that this is handled properly in the
|
|
// fast-path for CloneObjectIC.
|
|
o.data = 1;
|
|
assertEquals(1, %GetProperty(foo(o), "data"));
|