Vector ICs: Ensure KeyedAccessStore mode is encoded in all handlers.

Vector ICs: Ensure KeyedAccessStore mode is encoded in all handlers.

For vector-based keyed store ics, we need to know the current
KeyedAccessStore mode on ic MISS, and to produce optimized code.

We can't store this mode, which can change on any MISS in the IC
without patching. Therefore, this CL makes sure that the information is
redundantly available in the handlers embedded in the IC. This way,
when --vector-stores is turned on, we'll be able to extract that
information from the vector which maintains a list of these handlers.

BUG=

Committed: https://crrev.com/24921f76c60ea6e0c01866d121de7227ff095129
Cr-Commit-Position: refs/heads/master@{#30378}

[mvstanton, 2015-08-26 09:33:46]

mvstanton@chromium.org changed reviewers:
+ yangguo@chromium.org

[mvstanton, 2015-08-26 09:33:46]

Hi Yang,
Here is the CL we discussed. Validates/protects that the handlers have the same
store mode as the IC extra state bits.

[Yang, 2015-08-26 10:38:26]

On 2015/08/26 09:33:46, mvstanton wrote:
> Hi Yang,
> Here is the CL we discussed. Validates/protects that the handlers have the
same
> store mode as the IC extra state bits.

lgtm.

[mvstanton, 2015-08-26 10:46:28]

The CQ bit was checked by mvstanton@chromium.org

[commit-bot: I haz the power, 2015-08-26 10:46:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1312693004/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1312693004/20001

[commit-bot: I haz the power, 2015-08-26 10:47:54]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-08-26 10:48:16]

Patchset 2 (id:??) landed as
https://crrev.com/24921f76c60ea6e0c01866d121de7227ff095129
Cr-Commit-Position: refs/heads/master@{#30378}