[arm64] Emit CBZ for deoptimisations.

[arm64] Emit CBZ for deoptimisations.

Emit the compare and branch on zero (CBZ) instruction when
possible for deoptimisations, as we do for normal branches.

BUG=

Committed: https://crrev.com/3836fc074bfac6824568f0380bdb1eaddfb00800
Cr-Commit-Position: refs/heads/master@{#40568}

[georgia.kouveli, 2016-10-25 10:45:11]

georgia.kouveli@arm.com changed reviewers:
+ bmeurer@chromium.org, epertoso@chromium.org

[georgia.kouveli, 2016-10-25 12:37:21]

Description was changed from

==========
[arm64] Emit CBZ for deoptimisations.

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

to

==========
[arm64] Emit CBZ for deoptimisations.

Emit the compare and branch on zero (CBZ) instruction when
possible for deoptimisations, as we do for normal branches.

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

[epertoso, 2016-10-25 14:40:43]

lgtm, thanks.

[georgia.kouveli, 2016-10-25 14:56:36]

The CQ bit was checked by georgia.kouveli@arm.com

[commit-bot: I haz the power, 2016-10-25 14:56:41]

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, 2016-10-25 15:23:58]

Description was changed from

==========
[arm64] Emit CBZ for deoptimisations.

Emit the compare and branch on zero (CBZ) instruction when
possible for deoptimisations, as we do for normal branches.

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

to

==========
[arm64] Emit CBZ for deoptimisations.

Emit the compare and branch on zero (CBZ) instruction when
possible for deoptimisations, as we do for normal branches.

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

[commit-bot: I haz the power, 2016-10-25 15:23:58]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-17 22:12:50]

Description was changed from

==========
[arm64] Emit CBZ for deoptimisations.

Emit the compare and branch on zero (CBZ) instruction when
possible for deoptimisations, as we do for normal branches.

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

to

==========
[arm64] Emit CBZ for deoptimisations.

Emit the compare and branch on zero (CBZ) instruction when
possible for deoptimisations, as we do for normal branches.

BUG=

Committed: https://crrev.com/3836fc074bfac6824568f0380bdb1eaddfb00800
Cr-Commit-Position: refs/heads/master@{#40568}
==========

[commit-bot: I haz the power, 2016-11-17 22:12:52]

Patchset 1 (id:??) landed as
https://crrev.com/3836fc074bfac6824568f0380bdb1eaddfb00800
Cr-Commit-Position: refs/heads/master@{#40568}