[turbofan] Minor performance tweaks in escape analysis

[turbofan] Minor performance tweaks in escape analysis

* Add caching to handling of dangling loads
* Add two unittests for load elimination on escaped objects

BUG=v8:4586
LOG=n

Committed: https://crrev.com/2b84cb4f56f6a3ab4c61f61af0fdc75606cf15c9
Cr-Commit-Position: refs/heads/master@{#33498}

[sigurds, 2016-01-25 12:48:49]

sigurds@chromium.org changed reviewers:
+ mstarzinger@chromium.org

[sigurds, 2016-01-25 12:48:49]

PTAL

[sigurds, 2016-01-25 12:49:36]

Description was changed from

==========
[turbofan] Minor performance tweaks in escape analysis

BUG=v8:4586
LOG=n
==========

to

==========
[turbofan] Minor performance tweaks in escape analysis

* Add caching to handling of dangling loads
* Add two unittests for load elimination on escaped objects

BUG=v8:4586
LOG=n
==========

[Michael Starzinger, 2016-01-25 17:07:17]

LGTM.

[sigurds, 2016-01-25 17:08:14]

The CQ bit was checked by sigurds@chromium.org

[sigurds, 2016-01-25 17:08:14]

The patchset sent to the CQ was uploaded after l-g-t-m from
mstarzinger@chromium.org
Link to the patchset: https://codereview.chromium.org/1619103004/#ps60001
(title: "Unstage")

[commit-bot: I haz the power, 2016-01-25 17:08:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1619103004/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1619103004/60001

[commit-bot: I haz the power, 2016-01-25 17:30:57]

Description was changed from

==========
[turbofan] Minor performance tweaks in escape analysis

* Add caching to handling of dangling loads
* Add two unittests for load elimination on escaped objects

BUG=v8:4586
LOG=n
==========

to

==========
[turbofan] Minor performance tweaks in escape analysis

* Add caching to handling of dangling loads
* Add two unittests for load elimination on escaped objects

BUG=v8:4586
LOG=n
==========

[commit-bot: I haz the power, 2016-01-25 17:30:57]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2016-01-25 17:31:23]

Description was changed from

==========
[turbofan] Minor performance tweaks in escape analysis

* Add caching to handling of dangling loads
* Add two unittests for load elimination on escaped objects

BUG=v8:4586
LOG=n
==========

to

==========
[turbofan] Minor performance tweaks in escape analysis

* Add caching to handling of dangling loads
* Add two unittests for load elimination on escaped objects

BUG=v8:4586
LOG=n

Committed: https://crrev.com/2b84cb4f56f6a3ab4c61f61af0fdc75606cf15c9
Cr-Commit-Position: refs/heads/master@{#33498}
==========

[commit-bot: I haz the power, 2016-01-25 17:31:23]

Patchset 4 (id:??) landed as
https://crrev.com/2b84cb4f56f6a3ab4c61f61af0fdc75606cf15c9
Cr-Commit-Position: refs/heads/master@{#33498}