Prefill with correct contextual load ICs in fullcodegen.

Compute correct contextual load ICs in fullcodegen.

BUG=
R=dcarney@chromium.org

Committed: https://crrev.com/7ee31a2348c67ee09664519818c8feb61c82fedf
Cr-Commit-Position: refs/heads/master@{#26941}

[Toon Verwaest, 2015-03-02 13:12:08]

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

[Toon Verwaest, 2015-03-02 13:12:09]

PTAL

[dcarney, 2015-03-02 13:15:33]

lgtm

[Toon Verwaest, 2015-03-02 13:23:30]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2015-03-02 13:24:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/969733003/100001

[Toon Verwaest, 2015-03-02 13:37:05]

Committed patchset #6 (id:100001) manually as
7ee31a2348c67ee09664519818c8feb61c82fedf (presubmit successful).

[commit-bot: I haz the power, 2015-03-02 13:37:09]

Patchset 6 (id:??) landed as
https://crrev.com/7ee31a2348c67ee09664519818c8feb61c82fedf
Cr-Commit-Position: refs/heads/master@{#26941}

[Toon Verwaest, 2015-03-06 07:39:37]

A revert of this CL (patchset #6 id:100001) has been created in
https://codereview.chromium.org/983053002/ by verwaest@chromium.org.

The reason for reverting is: Eager compilation causes overhead, and doesn't work
with type feedback vector based inline caching. We'll look into a different,
lazy, approach for tfv..