[turbofan] Support virtual register redirection in instruction selector.

[turbofan] Support virtual register redirection in instruction selector.

Committed: https://crrev.com/f4c88a5e5bfa746ad287cf155958a83999f061a2
Cr-Commit-Position: refs/heads/master@{#39492}

[Jarin, 2016-09-18 20:49:11]

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

[commit-bot: I haz the power, 2016-09-18 20:49:20]

Dry run: 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, 2016-09-18 20:54:49]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-09-18 20:54:50]

Dry run: Try jobs failed on following builders:
  v8_win_nosnap_shared_rel_ng on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_win_nosnap_shared_rel_ng...)

[Jarin, 2016-09-18 22:01:31]

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

[commit-bot: I haz the power, 2016-09-18 22:01:39]

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

[Jarin, 2016-09-18 22:03:30]

jarin@chromium.org changed reviewers:
+ bmeurer@chromium.org

[Jarin, 2016-09-18 22:03:30]

Could you take a look, please?

Unfortunately, it does not improve navier-stokes score, but it does help with
generated code size.

[commit-bot: I haz the power, 2016-09-18 22:27:06]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-09-18 22:27:07]

Dry run: This issue passed the CQ dry run.

[Benedikt Meurer, 2016-09-19 03:40:54]

LGTM.

[Jarin, 2016-09-19 07:59:50]

The CQ bit was checked by jarin@chromium.org

[commit-bot: I haz the power, 2016-09-19 07:59:55]

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, 2016-09-19 08:02:29]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-09-19 08:02:57]

Description was changed from

==========
[turbofan] Support virtual register redirection in instruction selector.
==========

to

==========
[turbofan] Support virtual register redirection in instruction selector.

Committed: https://crrev.com/f4c88a5e5bfa746ad287cf155958a83999f061a2
Cr-Commit-Position: refs/heads/master@{#39492}
==========

[commit-bot: I haz the power, 2016-09-19 08:02:58]

Patchset 2 (id:??) landed as
https://crrev.com/f4c88a5e5bfa746ad287cf155958a83999f061a2
Cr-Commit-Position: refs/heads/master@{#39492}