[turbofan] Assign appropriate types to RegExp builtins.

[turbofan] Assign appropriate types to RegExp builtins.

Recognize a couple of builtins on the RegExp.prototype in the Typer and
assign useful types to them, so we can optimize various checks on their
results.

R=yangguo@chromium.org
BUG=v8:5267
Committed: https://crrev.com/d66aaedd0eb57af0b2130c8dfe3aae5a6ea335c9
Cr-Commit-Position: refs/heads/master@{#41240}

[Benedikt Meurer, 2016-11-24 05:32:13]

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

[commit-bot: I haz the power, 2016-11-24 05:32:22]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Yang, 2016-11-24 05:38:32]

lgtm. I think there are a couple more that you could add.
String.prototype.indexOf, .replace, .search, RegExp.prototype.match etc.

[Benedikt Meurer, 2016-11-24 05:39:29]

Indeed. They'll require some additional surgery (at least in case of .replace).
Maybe jgruber@ can take a look?

[Benedikt Meurer, 2016-11-24 05:39:35]

The CQ bit was unchecked by bmeurer@chromium.org

[Benedikt Meurer, 2016-11-24 05:39:41]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-11-24 05:39:54]

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, 2016-11-24 06:01:45]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1479965981205270, "parent_rev":
"b62c2e00057ffa9a8843a3ab3b7f1423ce4600b9", "commit_rev":
"6bb5a0c9bf201ef7084e9c0ce83c605c288e1cec"}

[commit-bot: I haz the power, 2016-11-24 06:01:49]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-24 06:02:19]

Description was changed from

==========
[turbofan] Assign appropriate types to RegExp builtins.

Recognize a couple of builtins on the RegExp.prototype in the Typer and
assign useful types to them, so we can optimize various checks on their
results.

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

to

==========
[turbofan] Assign appropriate types to RegExp builtins.

Recognize a couple of builtins on the RegExp.prototype in the Typer and
assign useful types to them, so we can optimize various checks on their
results.

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

Committed: https://crrev.com/d66aaedd0eb57af0b2130c8dfe3aae5a6ea335c9
Cr-Commit-Position: refs/heads/master@{#41240}
==========

[commit-bot: I haz the power, 2016-11-24 06:02:20]

Patchset 1 (id:??) landed as
https://crrev.com/d66aaedd0eb57af0b2130c8dfe3aae5a6ea335c9
Cr-Commit-Position: refs/heads/master@{#41240}