[turbofan] Optimize strict equality with unique input.

[turbofan] Optimize strict equality with unique input.

If one input to JSStrictEqual/JSNotStrictEqual is Unique (except
InternalizedString) or the hole, then we can turn that into a
direct pointer comparison, as such values are only equal to exactly
the same unique value.

BUG=v8:5267
R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2611363002
Cr-Commit-Position: refs/heads/master@{#42122}
Committed: https://chromium.googlesource.com/v8/v8/+/b36b8395e81fa2f7709c27acec93e8ce26d5bc3a

[Benedikt Meurer, 2017-01-06 19:11:45]

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

[commit-bot: I haz the power, 2017-01-06 19:11:52]

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, 2017-01-06 19:45:17]

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

[commit-bot: I haz the power, 2017-01-06 19:45:18]

Dry run: This issue passed the CQ dry run.

[Benedikt Meurer, 2017-01-07 18:14:09]

Description was changed from

==========
[turbofan] Optimize strict equality with unique inout.

If one input to JSStrictEqual/JSNotStrictEqual is Unique (except
InternalizedString) or the hole, then we can turn that into a
direct pointer comparison, as such values are only equal to exactly
the same unique value.

BUG=v8:5267
R=jarin@chromium.org
==========

to

==========
[turbofan] Optimize strict equality with unique input.

If one input to JSStrictEqual/JSNotStrictEqual is Unique (except
InternalizedString) or the hole, then we can turn that into a
direct pointer comparison, as such values are only equal to exactly
the same unique value.

BUG=v8:5267
R=jarin@chromium.org
==========

[Jarin, 2017-01-09 06:13:05]

lgtm

[Benedikt Meurer, 2017-01-09 06:13:14]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2017-01-09 06:13:26]

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, 2017-01-09 06:40:24]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1483942394629560, "parent_rev":
"b0fab645b74c20bc4da5c73bfe3eb52e8abec4a6", "commit_rev":
"b36b8395e81fa2f7709c27acec93e8ce26d5bc3a"}

[commit-bot: I haz the power, 2017-01-09 06:40:30]

Description was changed from

==========
[turbofan] Optimize strict equality with unique input.

If one input to JSStrictEqual/JSNotStrictEqual is Unique (except
InternalizedString) or the hole, then we can turn that into a
direct pointer comparison, as such values are only equal to exactly
the same unique value.

BUG=v8:5267
R=jarin@chromium.org
==========

to

==========
[turbofan] Optimize strict equality with unique input.

If one input to JSStrictEqual/JSNotStrictEqual is Unique (except
InternalizedString) or the hole, then we can turn that into a
direct pointer comparison, as such values are only equal to exactly
the same unique value.

BUG=v8:5267
R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2611363002
Cr-Commit-Position: refs/heads/master@{#42122}
Committed:
https://chromium.googlesource.com/v8/v8/+/b36b8395e81fa2f7709c27acec93e8ce26d...
==========

[commit-bot: I haz the power, 2017-01-09 06:40:31]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/b36b8395e81fa2f7709c27acec93e8ce26d...