[heap] Perform filler check based on map instead of instance type in LiveObjectIterator.

[heap] Perform filler check based on map instead of instance type in LiveObjectIterator.

BUG=v8:6139
Review-Url: https://codereview.chromium.org/2771073003
Cr-Commit-Position: refs/heads/master@{#44107}
Committed: https://chromium.googlesource.com/v8/v8/+/9a3b029b6c8ccf3792f162c7f79ceacc694aa0df

[Hannes Payer (out of office), 2017-03-24 13:11:21]

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

[commit-bot: I haz the power, 2017-03-24 13:11:29]

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

[Michael Lippautz, 2017-03-24 13:14:15]

mlippautz@chromium.org changed reviewers:
+ mlippautz@chromium.org

[Michael Lippautz, 2017-03-24 13:14:16]

lgtm

[ulan, 2017-03-24 13:14:18]

ulan@chromium.org changed reviewers:
+ ulan@chromium.org
- mlippautz@chromium.org

[ulan, 2017-03-24 13:14:18]

lgtm

https://codereview.chromium.org/2771073003/diff/1/src/heap/mark-compact-inl.h
File src/heap/mark-compact-inl.h (right):

https://codereview.chromium.org/2771073003/diff/1/src/heap/mark-compact-inl.h...
src/heap/mark-compact-inl.h:199: if (map == one_word_filler || map ==
two_word_filler ||
Can you add a comment why IsFiller doesn't work here? So that it doesn't get
refactored back.

[Hannes Payer (out of office), 2017-03-24 13:17:59]

The CQ bit was checked by hpayer@chromium.org

[Hannes Payer (out of office), 2017-03-24 13:17:59]

The patchset sent to the CQ was uploaded after l-g-t-m from
mlippautz@chromium.org, ulan@chromium.org
Link to the patchset: https://codereview.chromium.org/2771073003/#ps20001
(title: "comment")

[commit-bot: I haz the power, 2017-03-24 13:18:09]

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, 2017-03-24 13:44:14]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1490361479195010,
"parent_rev": "d0c2b8c43f53fc237efad1e5b402922d09d8786b", "commit_rev":
"9a3b029b6c8ccf3792f162c7f79ceacc694aa0df"}

[commit-bot: I haz the power, 2017-03-24 13:44:19]

Description was changed from

==========
[heap] Perform filler check based on map instead of instance type in
LiveObjectIterator.

BUG=v8:6139
==========

to

==========
[heap] Perform filler check based on map instead of instance type in
LiveObjectIterator.

BUG=v8:6139

Review-Url: https://codereview.chromium.org/2771073003
Cr-Commit-Position: refs/heads/master@{#44107}
Committed:
https://chromium.googlesource.com/v8/v8/+/9a3b029b6c8ccf3792f162c7f79ceacc694...
==========

[commit-bot: I haz the power, 2017-03-24 13:44:20]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/v8/v8/+/9a3b029b6c8ccf3792f162c7f79ceacc694...