Vector-ICs: Implement slot sharing for global loads.

Vector-ICs: Implement slot sharing for global loads.

We can reduce the number of type feedback vector slots required, and
also reduce IC misses.

Committed: https://crrev.com/4ededa8694c489b07334bb44d1186726b260bd81
Cr-Commit-Position: refs/heads/master@{#27149}

[mvstanton, 2015-03-11 15:55:17]

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

[mvstanton, 2015-03-11 15:55:17]

Hi Toon, I hope not to overload you, if you'd like to suggest a different
reviewer let me know :D.
Here is the slot sharing for global loads you suggested. PTAL,
--Michael

[Toon Verwaest, 2015-03-11 17:58:45]

lgtm

[mvstanton, 2015-03-12 09:11:49]

The CQ bit was checked by mvstanton@chromium.org

[mvstanton, 2015-03-12 09:11:50]

The patchset sent to the CQ was uploaded after l-g-t-m from
verwaest@chromium.org
Link to the patchset: https://codereview.chromium.org/1001533002/#ps60001
(title: "REBASE.")

[commit-bot: I haz the power, 2015-03-12 09:12:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1001533002/60001

[commit-bot: I haz the power, 2015-03-12 09:22:51]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-03-12 09:23:09]

Patchset 4 (id:??) landed as
https://crrev.com/4ededa8694c489b07334bb44d1186726b260bd81
Cr-Commit-Position: refs/heads/master@{#27149}