[turbofan] Make context deoptmizable

[turbofan] Make context deoptmizable

Escape analysis will eliminate the context, if possible. Materialization
must then ensure that the materialized object has the right map, and that
the context register is set accordingly.

R=jarin@chromium.org
BUG=569530, v8:4586
LOG=n

Committed: https://crrev.com/b5a34b3d29ca6017246776e02627b53c1036df5c
Cr-Commit-Position: refs/heads/master@{#33201}

[sigurds, 2016-01-11 11:44:38]

As discussed offline, PTAL.

[Jarin, 2016-01-11 12:40:13]

lgtm. Thanks!

[sigurds, 2016-01-11 12:46:17]

The CQ bit was checked by sigurds@chromium.org

[commit-bot: I haz the power, 2016-01-11 12:46:23]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1572293002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1572293002/1

[commit-bot: I haz the power, 2016-01-11 12:47:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-11 12:48:19]

Description was changed from

==========
[turbofan] Make context deoptmizable

Escape analysis will eliminate the context, if possible. Materialization
must then ensure that the materialized object has the right map, and that
the context register is set accordingly.

R=jarin@chromium.org
BUG=569530,v8:4586
LOG=n
==========

to

==========
[turbofan] Make context deoptmizable

Escape analysis will eliminate the context, if possible. Materialization
must then ensure that the materialized object has the right map, and that
the context register is set accordingly.

R=jarin@chromium.org
BUG=569530,v8:4586
LOG=n

Committed: https://crrev.com/b5a34b3d29ca6017246776e02627b53c1036df5c
Cr-Commit-Position: refs/heads/master@{#33201}
==========

[commit-bot: I haz the power, 2016-01-11 12:48:20]

Patchset 1 (id:??) landed as
https://crrev.com/b5a34b3d29ca6017246776e02627b53c1036df5c
Cr-Commit-Position: refs/heads/master@{#33201}