[builtins] Speedup Object.keys by adding a fast path for objects without elements, interceptors, ...

[builtins] Speedup Object.keys by adding a fast path for objects without elements, interceptors, ...

This speeds up the for-of-object benchmark at
http://kpdecker.github.io/six-speed/ by >2x.

BUG=

Committed: https://crrev.com/9ad61e6d81b8ff5c1391fb2b49b510daa15379d2
Cr-Commit-Position: refs/heads/master@{#33867}

[Toon Verwaest, 2016-02-10 11:05:43]

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

[Toon Verwaest, 2016-02-10 11:05:52]

verwaest@chromium.org changed reviewers:
+ cbruni@chromium.org

[Toon Verwaest, 2016-02-10 11:05:53]

ptal

[commit-bot: I haz the power, 2016-02-10 11:05:54]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1682873003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1682873003/1

[Toon Verwaest, 2016-02-10 11:13:32]

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

[commit-bot: I haz the power, 2016-02-10 11:13:34]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1682873003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1682873003/20001

[commit-bot: I haz the power, 2016-02-10 11:34:55]

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

[commit-bot: I haz the power, 2016-02-10 11:34:56]

Dry run: This issue passed the CQ dry run.

[Camillo Bruni, 2016-02-10 12:21:03]

lgtm

[Toon Verwaest, 2016-02-10 13:48:29]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2016-02-10 13:48:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1682873003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1682873003/20001

[commit-bot: I haz the power, 2016-02-10 13:49:57]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-02-10 13:50:26]

Description was changed from

==========
[builtins] Speedup Object.keys by adding a fast path for objects without
elements, interceptors, ...

This speeds up the for-of-object benchmark at
http://kpdecker.github.io/six-speed/ by >2x.

BUG=
==========

to

==========
[builtins] Speedup Object.keys by adding a fast path for objects without
elements, interceptors, ...

This speeds up the for-of-object benchmark at
http://kpdecker.github.io/six-speed/ by >2x.

BUG=

Committed: https://crrev.com/9ad61e6d81b8ff5c1391fb2b49b510daa15379d2
Cr-Commit-Position: refs/heads/master@{#33867}
==========

[commit-bot: I haz the power, 2016-02-10 13:50:27]

Patchset 2 (id:??) landed as
https://crrev.com/9ad61e6d81b8ff5c1391fb2b49b510daa15379d2
Cr-Commit-Position: refs/heads/master@{#33867}