[turbofan] Track floating-point registers live at function entry in instruction scheduler.

[turbofan] Track floating-point registers live at function entry in instruction scheduler.

This patch make sure that the nop instructions used to mark floating-point
arguments live range begin will not be moved by the scheduler.

R=jarin@chromium.org

Committed: https://crrev.com/63a344ab43a4f8c4e74239fdd981e1722829ea51
Cr-Commit-Position: refs/heads/master@{#35751}

[baptiste.afsa1, 2016-04-19 14:45:44]

PTAL

[Jarin, 2016-04-24 09:33:00]

lgtm

[baptiste.afsa1, 2016-04-25 07:46:48]

The CQ bit was checked by baptiste.afsa@arm.com

[commit-bot: I haz the power, 2016-04-25 07:46:58]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1896933004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1896933004/1

[commit-bot: I haz the power, 2016-04-25 08:11:04]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-25 08:12:41]

Description was changed from

==========
[turbofan] Track floating-point registers live at function entry in instruction
scheduler.

This patch make sure that the nop instructions used to mark floating-point
arguments live range begin will not be moved by the scheduler.

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

to

==========
[turbofan] Track floating-point registers live at function entry in instruction
scheduler.

This patch make sure that the nop instructions used to mark floating-point
arguments live range begin will not be moved by the scheduler.

R=jarin@chromium.org

Committed: https://crrev.com/63a344ab43a4f8c4e74239fdd981e1722829ea51
Cr-Commit-Position: refs/heads/master@{#35751}
==========

[commit-bot: I haz the power, 2016-04-25 08:12:42]

Patchset 1 (id:??) landed as
https://crrev.com/63a344ab43a4f8c4e74239fdd981e1722829ea51
Cr-Commit-Position: refs/heads/master@{#35751}