[runtime] More LookupIterator / Transition related performance tweaks

[runtime] More LookupIterator / Transition related performance tweaks

Minor improvements measured through by https://github.com/kpdecker/six-speed/blob/master/tests/object-assign/object-assign.es6. Mostly due to inlining of NowContains on the FieldType

Committed: https://crrev.com/d198717714e1c96375f27a65902e390f53f3a42d
Cr-Commit-Position: refs/heads/master@{#34060}

[Toon Verwaest, 2016-02-16 13:51:30]

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

[Toon Verwaest, 2016-02-16 13:51:31]

ptal

[Camillo Bruni, 2016-02-16 13:58:49]

lgtm

[Toon Verwaest, 2016-02-16 14:09:09]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2016-02-16 14:09:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1703513002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1703513002/1

[commit-bot: I haz the power, 2016-02-16 14:10:08]

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

[commit-bot: I haz the power, 2016-02-16 14:10:09]

Try jobs failed on following builders:
  v8_linux64_asan_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_asan_rel/builds/...)
  v8_linux64_avx2_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_avx2_rel/builds/...)
  v8_linux64_rel_ng on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_rel_ng/builds/1443)
  v8_linux_mips64el_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_mips64el_compile_r...)
  v8_linux_mipsel_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_mipsel_compile_rel...)
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/11044)

[adamk, 2016-02-16 19:48:15]

DBC: Longer CL description here would be appreciated (in particular, am
interested in what's measuring the performance improvement here).

[Toon Verwaest, 2016-02-17 08:17:39]

Description was changed from

==========
[runtime] More LookupIterator / Transition related performance tweaks

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

to

==========
[runtime] More LookupIterator / Transition related performance tweaks


Minor improvements measured through by
https://github.com/kpdecker/six-speed/blob/master/tests/object-assign/object-....
Mostly due to inlining of NowContains on the FieldType
==========

[Toon Verwaest, 2016-02-17 08:18:10]

The CQ bit was checked by verwaest@chromium.org

[Toon Verwaest, 2016-02-17 08:18:11]

The patchset sent to the CQ was uploaded after l-g-t-m from cbruni@chromium.org
Link to the patchset: https://codereview.chromium.org/1703513002/#ps20001
(title: "Rebase")

[commit-bot: I haz the power, 2016-02-17 08:18:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1703513002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1703513002/20001

[commit-bot: I haz the power, 2016-02-17 09:06:50]

Description was changed from

==========
[runtime] More LookupIterator / Transition related performance tweaks


Minor improvements measured through by
https://github.com/kpdecker/six-speed/blob/master/tests/object-assign/object-....
Mostly due to inlining of NowContains on the FieldType
==========

to

==========
[runtime] More LookupIterator / Transition related performance tweaks


Minor improvements measured through by
https://github.com/kpdecker/six-speed/blob/master/tests/object-assign/object-....
Mostly due to inlining of NowContains on the FieldType
==========

[commit-bot: I haz the power, 2016-02-17 09:06:51]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-02-17 09:07:38]

Description was changed from

==========
[runtime] More LookupIterator / Transition related performance tweaks


Minor improvements measured through by
https://github.com/kpdecker/six-speed/blob/master/tests/object-assign/object-....
Mostly due to inlining of NowContains on the FieldType
==========

to

==========
[runtime] More LookupIterator / Transition related performance tweaks

Minor improvements measured through by
https://github.com/kpdecker/six-speed/blob/master/tests/object-assign/object-....
Mostly due to inlining of NowContains on the FieldType

Committed: https://crrev.com/d198717714e1c96375f27a65902e390f53f3a42d
Cr-Commit-Position: refs/heads/master@{#34060}
==========

[commit-bot: I haz the power, 2016-02-17 09:07:39]

Patchset 2 (id:??) landed as
https://crrev.com/d198717714e1c96375f27a65902e390f53f3a42d
Cr-Commit-Position: refs/heads/master@{#34060}