[turbofan] Elide mask for CheckedStore

[turbofan] Elide mask for CheckedStore

Apply the mask elision code for Store to CheckedStore in the machine operator
reducer.

This is the arch independent part of https://codereview.chromium.org/1883133002

BUG=

Committed: https://crrev.com/c514cf1f88128f0e547317e3333ef9809466cd08
Cr-Commit-Position: refs/heads/master@{#35788}

[martyn.capewell, 2016-04-25 17:29:29]

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

[Benedikt Meurer, 2016-04-25 17:58:42]

Nice, thanks. LGTM.

[martyn.capewell, 2016-04-26 09:37:36]

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

[commit-bot: I haz the power, 2016-04-26 09:37:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1921673003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1921673003/1

[commit-bot: I haz the power, 2016-04-26 09:57:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-26 09:57:59]

Description was changed from

==========
[turbofan] Elide mask for CheckedStore

Apply the mask elision code for Store to CheckedStore in the machine operator
reducer.

This is the arch independent part of https://codereview.chromium.org/1883133002

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

to

==========
[turbofan] Elide mask for CheckedStore

Apply the mask elision code for Store to CheckedStore in the machine operator
reducer.

This is the arch independent part of https://codereview.chromium.org/1883133002

BUG=

Committed: https://crrev.com/c514cf1f88128f0e547317e3333ef9809466cd08
Cr-Commit-Position: refs/heads/master@{#35788}
==========

[commit-bot: I haz the power, 2016-04-26 09:58:00]

Patchset 1 (id:??) landed as
https://crrev.com/c514cf1f88128f0e547317e3333ef9809466cd08
Cr-Commit-Position: refs/heads/master@{#35788}