[stubs] Split ToNumberStub into reusable subparts.

[stubs] Split ToNumberStub into reusable subparts.

Split ToNumberStub into the entry ToNumberStub, and two new stubs,
StringToNumberStub and NonNumberToNumberStub, which can be used when we
already know something about the input (i.e. in various branches of the
code stubs, or in TurboFan graphs).

Also introduce an appropriate StringToNumber simplified operator for
TurboFan, that is pure and is lowered to an invocation of the newly
added StringToNumberStub.

R=jarin@chromium.org

Committed: https://crrev.com/b7aa4c3ab35b3a28fee7fc49bf7aa1003d66959e
Cr-Commit-Position: refs/heads/master@{#34922}

[Benedikt Meurer, 2016-03-21 08:01:39]

Hey Jaro,

Some disassembling of ToNumberStub.
Please take a look.

Thanks,
Benedikt

[Jarin, 2016-03-21 08:46:00]

lgtm

[Benedikt Meurer, 2016-03-21 09:03:10]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-03-21 09:03:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1818923002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1818923002/20001

[commit-bot: I haz the power, 2016-03-21 09:05:28]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-03-21 09:05:55]

Description was changed from

==========
[stubs] Split ToNumberStub into reusable subparts.

Split ToNumberStub into the entry ToNumberStub, and two new stubs,
StringToNumberStub and NonNumberToNumberStub, which can be used when we
already know something about the input (i.e. in various branches of the
code stubs, or in TurboFan graphs).

Also introduce an appropriate StringToNumber simplified operator for
TurboFan, that is pure and is lowered to an invocation of the newly
added StringToNumberStub.

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

to

==========
[stubs] Split ToNumberStub into reusable subparts.

Split ToNumberStub into the entry ToNumberStub, and two new stubs,
StringToNumberStub and NonNumberToNumberStub, which can be used when we
already know something about the input (i.e. in various branches of the
code stubs, or in TurboFan graphs).

Also introduce an appropriate StringToNumber simplified operator for
TurboFan, that is pure and is lowered to an invocation of the newly
added StringToNumberStub.

R=jarin@chromium.org

Committed: https://crrev.com/b7aa4c3ab35b3a28fee7fc49bf7aa1003d66959e
Cr-Commit-Position: refs/heads/master@{#34922}
==========

[commit-bot: I haz the power, 2016-03-21 09:05:55]

Patchset 2 (id:??) landed as
https://crrev.com/b7aa4c3ab35b3a28fee7fc49bf7aa1003d66959e
Cr-Commit-Position: refs/heads/master@{#34922}