ARM: check immediate overflow in branch and mov_label_offset in release mode to catch crashes earli…

ARM: check immediate overflow in branch and mov_label_offset in release mode to catch crashes earlier.

BUG=chromium:440913
LOG=N

Committed: https://crrev.com/13449b66231b323468487ed1525b516ff6c489df
Cr-Commit-Position: refs/heads/master@{#25849}

[ulan, 2014-12-16 13:46:01]

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

[ulan, 2014-12-16 13:46:01]

PTAL

[Jakob Kummerow, 2014-12-16 14:03:00]

lgtm

[Erik Corry, 2014-12-16 15:03:19]

erik.corry@gmail.com changed reviewers:
+ erik.corry@gmail.com

[Erik Corry, 2014-12-16 15:03:20]

We should keep an eye on the performance bots for this one. The ones that
generate a lot of code, eg Mandreel latency.

[ulan, 2014-12-16 15:07:11]

The CQ bit was checked by ulan@chromium.org

[commit-bot: I haz the power, 2014-12-16 15:07:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/810763002/1

[commit-bot: I haz the power, 2014-12-16 15:35:34]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-17 10:14:27]

Patchset 1 (id:??) landed as
https://crrev.com/13449b66231b323468487ed1525b516ff6c489df
Cr-Commit-Position: refs/heads/master@{#25849}

[Erik Corry, 2014-12-18 14:20:25]

Does this need to be done for arm64 too?

[ulan, 2014-12-18 14:25:38]

On 2014/12/18 14:20:25, Erik Corry wrote:
> Does this need to be done for arm64 too?

No, arm64 uses veneers to extend branch range.