[turbofan] Setup frames as needed.

[turbofan] Setup frames as needed.

We used to mark a block as needing frame based solely on
the spill list. With splintering, that is not entirely
accurate. With this change, for ranges that spill only in
deferred blocks, we mark the start of each block in which a
child range spills as needing a frame.

BUG=v8:4533
LOG=n

Committed: https://crrev.com/796c30eade2fc784ab22f08d52f9f7b431335e7f
Cr-Commit-Position: refs/heads/master@{#31769}

[Mircea Trofin, 2015-11-02 21:17:02]

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

[commit-bot: I haz the power, 2015-11-02 21:17:04]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1408183007/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1408183007/1

[commit-bot: I haz the power, 2015-11-02 21:17:05]

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

[commit-bot: I haz the power, 2015-11-02 21:17:06]

Dry run: No L-G-T-M from a valid reviewer yet. Only full committers are
accepted.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[Mircea Trofin, 2015-11-02 22:05:15]

Description was changed from

==========
Setup frames as needed.

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

to

==========
We used to mark a block as needing frame based solely on
the spill list. With splintering, that is not entirely 
accurate. With this change, for ranges that spill only in
deferred blocks, we mark the start of each block in which a
child range spills as needing a frame.

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

[Mircea Trofin, 2015-11-02 22:05:15]

mtrofin@chromium.org changed reviewers:
+ bmeurer@chromium.org, jarin@chromium.org

[Benedikt Meurer, 2015-11-03 05:35:59]

Description was changed from

==========
We used to mark a block as needing frame based solely on
the spill list. With splintering, that is not entirely 
accurate. With this change, for ranges that spill only in
deferred blocks, we mark the start of each block in which a
child range spills as needing a frame.

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

to

==========
[turbofan] Setup frames as needed.

We used to mark a block as needing frame based solely on
the spill list. With splintering, that is not entirely 
accurate. With this change, for ranges that spill only in
deferred blocks, we mark the start of each block in which a
child range spills as needing a frame.

BUG=v8:4533
LOG=n
==========

[Benedikt Meurer, 2015-11-03 05:37:09]

LGTM.

[Benedikt Meurer, 2015-11-03 05:37:41]

Please create tracking bugs for changes like these (I created one for this and
updated the BUG line).

[Mircea Trofin, 2015-11-04 06:47:03]

The CQ bit was checked by mtrofin@chromium.org

[commit-bot: I haz the power, 2015-11-04 06:47:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1408183007/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1408183007/1

[commit-bot: I haz the power, 2015-11-04 07:05:21]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-04 07:05:41]

Patchset 1 (id:??) landed as
https://crrev.com/796c30eade2fc784ab22f08d52f9f7b431335e7f
Cr-Commit-Position: refs/heads/master@{#31769}