[test] Check object literal backing store size.

[test] Check object literal backing store size.

Property backing store size for object literals is
the number of constant and named properties (possibly
over-allocating for the same names).

We do not reserve space in the backing store for __proto__.

We do not reserve space in the backing store for index keys.
Currently, we account for index keys in the runtime when iterating
over the boilerplate properties. Since the boilerplate properties
only include the properties up to the first computed property
name, the property backing store size includes space for index keys
if seen after the first computed property.

R=verwaest@chromium.org

BUG=v8:5625
Review-Url: https://codereview.chromium.org/2650593002
Cr-Commit-Position: refs/heads/master@{#42584}
Committed: https://chromium.googlesource.com/v8/v8/+/15623183e23e5d863d40d29427ea1eaca0774e72

[Franzi, 2017-01-22 20:15:45]

The CQ bit was checked by franzih@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-01-22 20:15:52]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-22 20:46:18]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-01-22 20:46:19]

Dry run: This issue passed the CQ dry run.

[Franzi, 2017-01-22 21:26:17]

Hi Toon, 

Adding a few test case before I move the code that adopts the backing store size
for index keys from the runtime to ast. 

PATL. 

Thanks, 

Franzi

[Toon Verwaest, 2017-01-22 21:38:54]

lgtm

[Franzi, 2017-01-22 21:42:58]

The CQ bit was checked by franzih@chromium.org

[commit-bot: I haz the power, 2017-01-22 21:43:04]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-22 21:44:42]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485121378704090, "parent_rev":
"d840ed11d9fa9f38676e6edcee93ed749afb284d", "commit_rev":
"15623183e23e5d863d40d29427ea1eaca0774e72"}

[commit-bot: I haz the power, 2017-01-22 21:44:47]

Description was changed from

==========
[test] Check object literal backing store size.

Property backing store size for object literals is
the number of constant and named properties (possibly
over-allocating for the same names).

We do not reserve space in the backing store for __proto__.

We do not reserve space in the backing store for index keys.
Currently, we account for index keys in the runtime when iterating
over the boilerplate properties. Since the boilerplate properties
only include the properties up to the first computed property
name, the property backing store size includes space for index keys
if seen after the first computed property.

R=verwaest@chromium.org

BUG=v8:5625
==========

to

==========
[test] Check object literal backing store size.

Property backing store size for object literals is
the number of constant and named properties (possibly
over-allocating for the same names).

We do not reserve space in the backing store for __proto__.

We do not reserve space in the backing store for index keys.
Currently, we account for index keys in the runtime when iterating
over the boilerplate properties. Since the boilerplate properties
only include the properties up to the first computed property
name, the property backing store size includes space for index keys
if seen after the first computed property.

R=verwaest@chromium.org

BUG=v8:5625

Review-Url: https://codereview.chromium.org/2650593002
Cr-Commit-Position: refs/heads/master@{#42584}
Committed:
https://chromium.googlesource.com/v8/v8/+/15623183e23e5d863d40d29427ea1eaca07...
==========

[commit-bot: I haz the power, 2017-01-22 21:44:48]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/15623183e23e5d863d40d29427ea1eaca07...