[turbofan] Use NumberConstant for LoadElement's index

[turbofan] Use NumberConstant for LoadElement's index

LoadElement nodes used a Int32Constant in some cases, which made
matching for constant values in optimizations more difficult than
necessary.

R=bmeurer@chromium.org

Committed: https://crrev.com/72ddee79c3d85555d133eca2e991fedf33be26cd
Cr-Commit-Position: refs/heads/master@{#33081}

[sigurds, 2016-01-04 13:01:40]

PTAL

[Benedikt Meurer, 2016-01-04 13:02:28]

LGTM.

[sigurds, 2016-01-04 13:06:08]

The CQ bit was checked by sigurds@chromium.org

[commit-bot: I haz the power, 2016-01-04 13:06:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1559853002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1559853002/1

[commit-bot: I haz the power, 2016-01-04 13:18:40]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-04 13:19:11]

Description was changed from

==========
[turbofan] Use NumberConstant for LoadElement's index

LoadElement nodes used a Int32Constant in some cases, which made
matching for constant values in optimizations more difficult than
necessary.

R=bmeurer@chromium.org
==========

to

==========
[turbofan] Use NumberConstant for LoadElement's index

LoadElement nodes used a Int32Constant in some cases, which made
matching for constant values in optimizations more difficult than
necessary.

R=bmeurer@chromium.org

Committed: https://crrev.com/72ddee79c3d85555d133eca2e991fedf33be26cd
Cr-Commit-Position: refs/heads/master@{#33081}
==========

[commit-bot: I haz the power, 2016-01-04 13:19:11]

Patchset 1 (id:??) landed as
https://crrev.com/72ddee79c3d85555d133eca2e991fedf33be26cd
Cr-Commit-Position: refs/heads/master@{#33081}