[runtime] Skip feedback vector configuration.

[runtime] Skip vector config for interceptors.

Do not preinitialize the feedback vector slot if 
the lookup iterator is an interceptor, because it is not
guaranteed that the iterator has a PropertyCell. 

If the HandlerConfiguration has a non-masking 
intercepting setter,
the iterator does not have a valid PropertyCell. 


BUG=chromium:656648
Review-Url: https://codereview.chromium.org/2674103002
Cr-Commit-Position: refs/heads/master@{#43034}
Committed: https://chromium.googlesource.com/v8/v8/+/0c137304e6e9ff6d6e627260f2877ba1944738c4

[Franzi, 2017-02-05 19:13:07]

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

[commit-bot: I haz the power, 2017-02-05 19:13:10]

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, 2017-02-05 19:41:13]

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

[commit-bot: I haz the power, 2017-02-05 19:41:14]

Dry run: This issue passed the CQ dry run.

[Franzi, 2017-02-06 09:34:01]

Description was changed from

==========
Do not configure feedback vector on interceptor.

Interceptors do not have a property cell which we
need for nexus configurations.

BUG=656648
==========

to

==========
[runtime] Skip vector config for interceptors.

Do not preinitialize the feedback vector slog if 
the lookup iterator is an interceptor, as the entry 
is not found and we do not have a PropertyCell. 

BUG=chromium:656648
==========

[Franzi, 2017-02-06 09:34:01]

franzih@chromium.org changed reviewers:
+ jochen@chromium.org

[Franzi, 2017-02-06 09:34:47]

Description was changed from

==========
[runtime] Skip vector config for interceptors.

Do not preinitialize the feedback vector slog if 
the lookup iterator is an interceptor, as the entry 
is not found and we do not have a PropertyCell. 

BUG=chromium:656648
==========

to

==========
[runtime] Skip vector config for interceptors.

Do not preinitialize the feedback vector slot if 
the lookup iterator is an interceptor, as the entry 
is not found and we do not have a PropertyCell. 

BUG=chromium:656648
==========

[Franzi, 2017-02-06 09:35:25]

Hi Jochen, 

Please take a look. Thanks, 

Franzi

[jochen (gone - plz use gerrit), 2017-02-07 15:07:37]

is it possible to write a test for this?

[Franzi, 2017-02-08 10:55:30]

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

[commit-bot: I haz the power, 2017-02-08 10:55:39]

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

[Franzi, 2017-02-08 10:56:45]

Description was changed from

==========
[runtime] Skip vector config for interceptors.

Do not preinitialize the feedback vector slot if 
the lookup iterator is an interceptor, as the entry 
is not found and we do not have a PropertyCell. 

BUG=chromium:656648
==========

to

==========
[runtime] Skip vector config for interceptors.

Do not preinitialize the feedback vector slot if 
the lookup iterator is an interceptor, because it is not
guaranteed that the iterator has a PropertyCell. 

If the HandlerConfiguration has a non-masking 
intercepting setter,
the iterator does not have a valid PropertyCell. 


BUG=chromium:656648
==========

[commit-bot: I haz the power, 2017-02-08 11:23:19]

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

[commit-bot: I haz the power, 2017-02-08 11:23:20]

Dry run: This issue passed the CQ dry run.

[Franzi, 2017-02-08 11:37:06]

On 2017/02/07 15:07:37, jochen wrote:
> is it possible to write a test for this?

Done.

[jochen (gone - plz use gerrit), 2017-02-08 11:38:24]

lgtm

[Franzi, 2017-02-08 11:43:26]

The CQ bit was checked by franzih@chromium.org

[commit-bot: I haz the power, 2017-02-08 11:43:35]

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, 2017-02-08 11:49:58]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1486554206538610,
"parent_rev": "b90d9205ca12d9e6351464bd85726c564869d23c", "commit_rev":
"0c137304e6e9ff6d6e627260f2877ba1944738c4"}

[commit-bot: I haz the power, 2017-02-08 11:50:02]

Description was changed from

==========
[runtime] Skip vector config for interceptors.

Do not preinitialize the feedback vector slot if 
the lookup iterator is an interceptor, because it is not
guaranteed that the iterator has a PropertyCell. 

If the HandlerConfiguration has a non-masking 
intercepting setter,
the iterator does not have a valid PropertyCell. 


BUG=chromium:656648
==========

to

==========
[runtime] Skip vector config for interceptors.

Do not preinitialize the feedback vector slot if 
the lookup iterator is an interceptor, because it is not
guaranteed that the iterator has a PropertyCell. 

If the HandlerConfiguration has a non-masking 
intercepting setter,
the iterator does not have a valid PropertyCell. 


BUG=chromium:656648

Review-Url: https://codereview.chromium.org/2674103002
Cr-Commit-Position: refs/heads/master@{#43034}
Committed:
https://chromium.googlesource.com/v8/v8/+/0c137304e6e9ff6d6e627260f2877ba1944...
==========

[commit-bot: I haz the power, 2017-02-08 11:50:07]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/v8/v8/+/0c137304e6e9ff6d6e627260f2877ba1944...