[arm] Fix custom addition in MacroAssembler::[Fast]Allocate

[arm] Fix custom addition in MacroAssembler::[Fast]Allocate

Don't rely on carry flags you didn't set yourself.

BUG=chromium:663402
Committed: https://crrev.com/87332fdf677f1b53f71be7c05d025a285e5a5c73
Cr-Commit-Position: refs/heads/master@{#40848}

[Jakob Kummerow, 2016-11-08 17:50:41]

jkummerow@chromium.org changed reviewers:
+ mlippautz@chromium.org

[Jakob Kummerow, 2016-11-08 17:50:42]

PTAL.

[Michael Lippautz, 2016-11-08 17:52:48]

lgtm, thanks a lot!

[Jakob Kummerow, 2016-11-08 17:53:10]

The CQ bit was checked by jkummerow@chromium.org

[commit-bot: I haz the power, 2016-11-08 17:53:21]

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, 2016-11-08 18:19:04]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-17 22:26:48]

Description was changed from

==========
[arm] Fix custom addition in MacroAssembler::[Fast]Allocate

Don't rely on carry flags you didn't set yourself.

BUG=chromium:663402
==========

to

==========
[arm] Fix custom addition in MacroAssembler::[Fast]Allocate

Don't rely on carry flags you didn't set yourself.

BUG=chromium:663402

Committed: https://crrev.com/87332fdf677f1b53f71be7c05d025a285e5a5c73
Cr-Commit-Position: refs/heads/master@{#40848}
==========

[commit-bot: I haz the power, 2016-11-17 22:26:49]

Patchset 1 (id:??) landed as
https://crrev.com/87332fdf677f1b53f71be7c05d025a285e5a5c73
Cr-Commit-Position: refs/heads/master@{#40848}