[builtins] Migrate Number.parseFloat to a TurboFan builtin.

[builtins] Migrate Number.parseFloat to a TurboFan builtin.

This implicitly convers parseFloat on the global object as well, since
it's the same function. This is mostly straight-forward, but adds
another fast case for HeapNumbers as well.

R=ishell@chromium.org

Committed: https://crrev.com/0f7f6e33ba131616325857ad1edd4a62d577693f
Cr-Commit-Position: refs/heads/master@{#40072}

[Benedikt Meurer, 2016-10-07 07:47:32]

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

[commit-bot: I haz the power, 2016-10-07 07:47:39]

Dry run: 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, 2016-10-07 08:05:47]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-10-07 08:05:48]

Dry run: Try jobs failed on following builders:
  v8_mac_rel_ng on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel_ng/builds/10343)
  v8_mac_rel_ng_triggered on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel_ng_triggered/bui...)

[Igor Sheludko, 2016-10-07 08:30:20]

lgtm

[Benedikt Meurer, 2016-10-07 08:31:49]

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

[commit-bot: I haz the power, 2016-10-07 08:31:59]

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

[Benedikt Meurer, 2016-10-07 08:34:08]

The CQ bit was unchecked by bmeurer@chromium.org

[Benedikt Meurer, 2016-10-07 08:34:11]

The CQ bit was checked by bmeurer@chromium.org

[Benedikt Meurer, 2016-10-07 08:34:12]

The patchset sent to the CQ was uploaded after l-g-t-m from ishell@chromium.org
Link to the patchset: https://codereview.chromium.org/2395373002/#ps20001
(title: "Fix the -0 corner case.")

[commit-bot: I haz the power, 2016-10-07 08:34:19]

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, 2016-10-07 08:58:48]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-10-07 08:59:07]

Description was changed from

==========
[builtins] Migrate Number.parseFloat to a TurboFan builtin.

This implicitly convers parseFloat on the global object as well, since
it's the same function. This is mostly straight-forward, but adds
another fast case for HeapNumbers as well.

R=ishell@chromium.org
==========

to

==========
[builtins] Migrate Number.parseFloat to a TurboFan builtin.

This implicitly convers parseFloat on the global object as well, since
it's the same function. This is mostly straight-forward, but adds
another fast case for HeapNumbers as well.

R=ishell@chromium.org

Committed: https://crrev.com/0f7f6e33ba131616325857ad1edd4a62d577693f
Cr-Commit-Position: refs/heads/master@{#40072}
==========

[commit-bot: I haz the power, 2016-10-07 08:59:07]

Patchset 2 (id:??) landed as
https://crrev.com/0f7f6e33ba131616325857ad1edd4a62d577693f
Cr-Commit-Position: refs/heads/master@{#40072}