[turbofan] Optimize typeof in abstract/strict equality comparison.

[turbofan] Optimize typeof in abstract/strict equality comparison.

Add support to optimize certain comparisons of typeof with known
strings to utilize the existing ObjectIs<Type> predicates. Also
add a new ObjectIsCallable, which is used to optimize the common
typeof x === "function" pattern.

R=jarin@chromium.org

Committed: https://crrev.com/e96c143171a31d2bb0982a6896c93e12441cee45
Cr-Commit-Position: refs/heads/master@{#35562}

[Benedikt Meurer, 2016-04-18 05:55:30]

Hey Jaro,

Simple optimization.
Please take a look.

Thanks,
Benedikt

[Jarin, 2016-04-18 06:54:13]

lgtm

[Benedikt Meurer, 2016-04-18 07:01:07]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-04-18 07:01:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1898653003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1898653003/1

[commit-bot: I haz the power, 2016-04-18 07:03:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-18 07:03:33]

Description was changed from

==========
[turbofan] Optimize typeof in abstract/strict equality comparison.

Add support to optimize certain comparisons of typeof with known
strings to utilize the existing ObjectIs<Type> predicates. Also
add a new ObjectIsCallable, which is used to optimize the common
typeof x === "function" pattern.

R=jarin@chromium.org
==========

to

==========
[turbofan] Optimize typeof in abstract/strict equality comparison.

Add support to optimize certain comparisons of typeof with known
strings to utilize the existing ObjectIs<Type> predicates. Also
add a new ObjectIsCallable, which is used to optimize the common
typeof x === "function" pattern.

R=jarin@chromium.org

Committed: https://crrev.com/e96c143171a31d2bb0982a6896c93e12441cee45
Cr-Commit-Position: refs/heads/master@{#35562}
==========

[commit-bot: I haz the power, 2016-04-18 07:03:34]

Patchset 1 (id:??) landed as
https://crrev.com/e96c143171a31d2bb0982a6896c93e12441cee45
Cr-Commit-Position: refs/heads/master@{#35562}