[turbofan] Use InternalizedString feedback abstract/strict equality comparisons.

[turbofan] Use InternalizedString feedback abstract/strict equality comparisons.

Add machinery to Ignition and TurboFan to collect and consume
InternalizedString feedback for abstract and strict equality
comparisons. Here we can turn the comparison into a simple
pointer equality check.

R=jarin@chromium.org
BUG=v8:5786
Review-Url: https://codereview.chromium.org/2609013002
Cr-Commit-Position: refs/heads/master@{#42008}
Committed: https://chromium.googlesource.com/v8/v8/+/b617335623909fd9179449443ee514c5b2be3c15

[Benedikt Meurer, 2017-01-02 09:20:43]

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

[commit-bot: I haz the power, 2017-01-02 09:20:49]

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, 2017-01-02 09:49:58]

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

[commit-bot: I haz the power, 2017-01-02 09:49:58]

Dry run: This issue passed the CQ dry run.

[Jarin, 2017-01-02 10:30:18]

lgtm

[Benedikt Meurer, 2017-01-02 11:55:02]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2017-01-02 11:55:13]

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, 2017-01-02 11:58:02]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1483358102958610, "parent_rev":
"4246200c4c47a286212dd023bdcddaac51d41c8b", "commit_rev":
"b617335623909fd9179449443ee514c5b2be3c15"}

[commit-bot: I haz the power, 2017-01-02 11:58:09]

Description was changed from

==========
[turbofan] Use InternalizedString feedback abstract/strict equality comparisons.

Add machinery to Ignition and TurboFan to collect and consume
InternalizedString feedback for abstract and strict equality
comparisons. Here we can turn the comparison into a simple
pointer equality check.

R=jarin@chromium.org
BUG=v8:5786
==========

to

==========
[turbofan] Use InternalizedString feedback abstract/strict equality comparisons.

Add machinery to Ignition and TurboFan to collect and consume
InternalizedString feedback for abstract and strict equality
comparisons. Here we can turn the comparison into a simple
pointer equality check.

R=jarin@chromium.org
BUG=v8:5786

Review-Url: https://codereview.chromium.org/2609013002
Cr-Commit-Position: refs/heads/master@{#42008}
Committed:
https://chromium.googlesource.com/v8/v8/+/b617335623909fd9179449443ee514c5b2b...
==========

[commit-bot: I haz the power, 2017-01-02 11:58:10]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/b617335623909fd9179449443ee514c5b2b...