[turbofan] Properly look through FinishRegion in alias analysis.

[turbofan] Properly look through FinishRegion in alias analysis.

For two FinishRegion nodes, the alias analysis returned "may alias" even
without properly looking through them.

Drive-by-fix: Add meaningful output for --trace-turbo-load-elimination.

R=jarin@chromium.org
BUG=v8:5267
Committed: https://crrev.com/9f37e303c3fab8146826a01ae442ef27c3cec4aa
Cr-Commit-Position: refs/heads/master@{#39075}

[Benedikt Meurer, 2016-09-01 10:17:00]

The CQ bit was checked by bmeurer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-01 10:17:09]

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

[Jarin, 2016-09-01 10:31:56]

lgtm, thanks!

[Benedikt Meurer, 2016-09-01 10:32:07]

The CQ bit was unchecked by bmeurer@chromium.org

[Benedikt Meurer, 2016-09-01 10:32:11]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-09-01 10:32:18]

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, 2016-09-01 10:50:12]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-01 10:50:34]

Description was changed from

==========
[turbofan] Properly look through FinishRegion in alias analysis.

For two FinishRegion nodes, the alias analysis returned "may alias" even
without properly looking through them.

Drive-by-fix: Add meaningful output for --trace-turbo-load-elimination.

R=jarin@chromium.org
BUG=v8:5267
==========

to

==========
[turbofan] Properly look through FinishRegion in alias analysis.

For two FinishRegion nodes, the alias analysis returned "may alias" even
without properly looking through them.

Drive-by-fix: Add meaningful output for --trace-turbo-load-elimination.

R=jarin@chromium.org
BUG=v8:5267

Committed: https://crrev.com/9f37e303c3fab8146826a01ae442ef27c3cec4aa
Cr-Commit-Position: refs/heads/master@{#39075}
==========

[commit-bot: I haz the power, 2016-09-01 10:50:36]

Patchset 1 (id:??) landed as
https://crrev.com/9f37e303c3fab8146826a01ae442ef27c3cec4aa
Cr-Commit-Position: refs/heads/master@{#39075}