Reland of [turbofan] ARM: Implement vswp and use in gap resolver

Reland of [turbofan] ARM: Implement vswp and use in gap resolver

Reason for revert:
Breaks g++ build.

Original issue's description:
> [turbofan] ARM: Implement vswp and use in gap resolver
>
> Use vswp to switch double-precision registers in the gap resolver, with fall
> back temp register-based code if NEON is not available.
>
> BUG=
>
> Committed: https://crrev.com/2837c2e65a2ee5b9fc610f30ce1215f52323ecbd
> Cr-Commit-Position: refs/heads/master@{#39209}

BUG=

Committed: https://crrev.com/c0637c1f23b95816d8b7a3d2a28988cb3a9e6368
Cr-Commit-Position: refs/heads/master@{#39264}

[martyn.capewell, 2016-09-06 14:55:28]

martyn.capewell@arm.com changed reviewers:
+ bmeurer@chromium.org, machenbach@chromium.org

[martyn.capewell, 2016-09-06 14:55:28]

Added the missing "U" suffix.

[Michael Achenbach, 2016-09-06 15:14:20]

lgtm (rubber-stamp). Please generally make separate patchsets for the reland and
the fix, for easy review of the fix.

[martyn.capewell, 2016-09-06 15:58:19]

On 2016/09/06 15:14:20, machenbach (slow) wrote:
> lgtm (rubber-stamp). Please generally make separate patchsets for the reland
and
> the fix, for easy review of the fix.

Understood; apologies.

[martyn.capewell, 2016-09-06 15:58:25]

The CQ bit was checked by martyn.capewell@arm.com

[commit-bot: I haz the power, 2016-09-06 15:58:36]

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, 2016-09-06 16:09:58]

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

[commit-bot: I haz the power, 2016-09-06 16:10:00]

Try jobs failed on following builders:
  v8_presubmit on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/23431)

[martyn.capewell, 2016-09-07 12:32:48]

Can I have an lg-tm from an owner, to satisfy presubmit?

[Benedikt Meurer, 2016-09-08 06:44:15]

The CQ bit was checked by bmeurer@chromium.org

[Benedikt Meurer, 2016-09-08 06:44:16]

lgtm

[commit-bot: I haz the power, 2016-09-08 06:44:20]

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, 2016-09-08 07:11:37]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-08 07:12:25]

Description was changed from

==========
Reland of [turbofan] ARM: Implement vswp and use in gap resolver

Reason for revert:
Breaks g++ build.

Original issue's description:
> [turbofan] ARM: Implement vswp and use in gap resolver
>
> Use vswp to switch double-precision registers in the gap resolver, with fall
> back temp register-based code if NEON is not available.
>
> BUG=
>
> Committed: https://crrev.com/2837c2e65a2ee5b9fc610f30ce1215f52323ecbd
> Cr-Commit-Position: refs/heads/master@{#39209}

BUG=
==========

to

==========
Reland of [turbofan] ARM: Implement vswp and use in gap resolver

Reason for revert:
Breaks g++ build.

Original issue's description:
> [turbofan] ARM: Implement vswp and use in gap resolver
>
> Use vswp to switch double-precision registers in the gap resolver, with fall
> back temp register-based code if NEON is not available.
>
> BUG=
>
> Committed: https://crrev.com/2837c2e65a2ee5b9fc610f30ce1215f52323ecbd
> Cr-Commit-Position: refs/heads/master@{#39209}

BUG=

Committed: https://crrev.com/c0637c1f23b95816d8b7a3d2a28988cb3a9e6368
Cr-Commit-Position: refs/heads/master@{#39264}
==========

[commit-bot: I haz the power, 2016-09-08 07:12:26]

Patchset 1 (id:??) landed as
https://crrev.com/c0637c1f23b95816d8b7a3d2a28988cb3a9e6368
Cr-Commit-Position: refs/heads/master@{#39264}