[stubs] Introduce AddStub and SubtractStub.

[stubs] Introduce AddStub and SubtractStub.

This adds two new stubs, AddStub and SubtractStub, for the plus and the
minus operators, and hooks them up with TurboFan and Ignition.
Especially the addition case is very heavy and we might want to look
into splitting that up further into specialized stubs (similar to what
we did with ToNumberStub recently).

R=epertoso@chromium.org

Committed: https://crrev.com/0bedf6f0614198d914d826e3a8def240fdf2bac8
Cr-Commit-Position: refs/heads/master@{#34994}

[Benedikt Meurer, 2016-03-22 13:40:49]

Hey Enrico,

Here's Add and Subtract stubs for Ignition and TurboFan.
Please take a look.

Thanks,
Benedikt

[epertoso, 2016-03-22 15:04:25]

lgtm

[Benedikt Meurer (Google), 2016-03-22 15:33:52]

The CQ bit was checked by bmeurer@google.com

[commit-bot: I haz the power, 2016-03-22 15:34:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1823083002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1823083002/1

[commit-bot: I haz the power, 2016-03-22 15:42:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-22 15:43:58]

Description was changed from

==========
[stubs] Introduce AddStub and SubtractStub.

This adds two new stubs, AddStub and SubtractStub, for the plus and the
minus operators, and hooks them up with TurboFan and Ignition.
Especially the addition case is very heavy and we might want to look
into splitting that up further into specialized stubs (similar to what
we did with ToNumberStub recently).

R=epertoso@chromium.org
==========

to

==========
[stubs] Introduce AddStub and SubtractStub.

This adds two new stubs, AddStub and SubtractStub, for the plus and the
minus operators, and hooks them up with TurboFan and Ignition.
Especially the addition case is very heavy and we might want to look
into splitting that up further into specialized stubs (similar to what
we did with ToNumberStub recently).

R=epertoso@chromium.org

Committed: https://crrev.com/0bedf6f0614198d914d826e3a8def240fdf2bac8
Cr-Commit-Position: refs/heads/master@{#34994}
==========

[commit-bot: I haz the power, 2016-03-22 15:43:59]

Patchset 1 (id:??) landed as
https://crrev.com/0bedf6f0614198d914d826e3a8def240fdf2bac8
Cr-Commit-Position: refs/heads/master@{#34994}