[turbofan] Fold word32 representation changes for checked constants.

[turbofan] Fold word32 representation changes for checked constants.

If we know that a constant can be represented as word32, then we don't
need to insert a checked conversion, but just change the constant
appropriately.

R=jarin@chromium.org

Committed: https://crrev.com/bd8a36a7275161cc25e16b4be67c5fe578e49e7e
Cr-Commit-Position: refs/heads/master@{#37273}

[Benedikt Meurer, 2016-06-27 07:20:48]

Hey Jaro,

Here's the fix for the issue you discovered.
Please take a look.

Thanks,
Benedikt

[Jarin, 2016-06-27 07:22:17]

lgtm. Thanks.

[Benedikt Meurer, 2016-06-27 07:24:12]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-06-27 07:24:15]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-06-27 07:43:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-27 07:46:29]

Description was changed from

==========
[turbofan] Fold word32 representation changes for checked constants.

If we know that a constant can be represented as word32, then we don't
need to insert a checked conversion, but just change the constant
appropriately.

R=jarin@chromium.org
==========

to

==========
[turbofan] Fold word32 representation changes for checked constants.

If we know that a constant can be represented as word32, then we don't
need to insert a checked conversion, but just change the constant
appropriately.

R=jarin@chromium.org

Committed: https://crrev.com/bd8a36a7275161cc25e16b4be67c5fe578e49e7e
Cr-Commit-Position: refs/heads/master@{#37273}
==========

[commit-bot: I haz the power, 2016-06-27 07:46:30]

Patchset 1 (id:??) landed as
https://crrev.com/bd8a36a7275161cc25e16b4be67c5fe578e49e7e
Cr-Commit-Position: refs/heads/master@{#37273}