[turbofan] Stay in optimized code for SMI inputs to %_ToInteger.

[turbofan] Stay in optimized code for SMI inputs to %_ToInteger.

We already have this fast case in Crankshaft where we don't call
%ToInteger when the input is already a SMI. Add the same optimization
to JSIntrinsicLowering.

R=jarin@chromium.org

Committed: https://crrev.com/0aa00c1b6cfa1ed099ec65c33c9a8a2cb7f36570
Cr-Commit-Position: refs/heads/master@{#33571}

[Benedikt Meurer, 2016-01-27 18:38:44]

Hey Jaro,

Here's an easy fix to avoid the runtime call for 99% of the cases (as we do in
Crankshaft).
Please take a look.

Thanks,
Benedikt

[Jarin, 2016-01-28 05:14:58]

lgtm

[Benedikt Meurer, 2016-01-28 05:20:10]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-01-28 05:20:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1641753002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1641753002/1

[commit-bot: I haz the power, 2016-01-28 05:22:02]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-28 05:22:38]

Description was changed from

==========
[turbofan] Stay in optimized code for SMI inputs to %_ToInteger.

We already have this fast case in Crankshaft where we don't call
%ToInteger when the input is already a SMI. Add the same optimization
to JSIntrinsicLowering.

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

to

==========
[turbofan] Stay in optimized code for SMI inputs to %_ToInteger.

We already have this fast case in Crankshaft where we don't call
%ToInteger when the input is already a SMI. Add the same optimization
to JSIntrinsicLowering.

R=jarin@chromium.org

Committed: https://crrev.com/0aa00c1b6cfa1ed099ec65c33c9a8a2cb7f36570
Cr-Commit-Position: refs/heads/master@{#33571}
==========

[commit-bot: I haz the power, 2016-01-28 05:22:39]

Patchset 1 (id:??) landed as
https://crrev.com/0aa00c1b6cfa1ed099ec65c33c9a8a2cb7f36570
Cr-Commit-Position: refs/heads/master@{#33571}