Revert of [turbofan] Combine GenericLoweringPhase and ChangeLoweringPhase.

Revert of [turbofan] Combine GenericLoweringPhase and ChangeLoweringPhase. (patchset #1 id:1 of https://codereview.chromium.org/1697133002/ )

Reason for revert:
Seems to tank stuff.

Original issue's description:
> [turbofan] Combine GenericLoweringPhase and ChangeLoweringPhase.
>
> There's no need to use a dedicated ChangeLoweringPhase before we go to
> GenericLoweringPhase; instead that change lowering (which is really
> simplified lowering by now) should run together with generic lowering.
>
> R=jarin@chromium.org
>
> Committed: https://crrev.com/0835ed9caf44427755065eb45f9187678ec9844c
> Cr-Commit-Position: refs/heads/master@{#34008}

TBR=jarin@chromium.org,bmeurer@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/d057adc83ea31a50369b472a8c9a8329d7956feb
Cr-Commit-Position: refs/heads/master@{#34019}

[Benedikt Meurer, 2016-02-16 08:25:07]

Created Revert of [turbofan] Combine GenericLoweringPhase and
ChangeLoweringPhase.

[commit-bot: I haz the power, 2016-02-16 08:25:11]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1698273002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1698273002/1

[commit-bot: I haz the power, 2016-02-16 08:25:22]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-16 08:25:45]

Description was changed from

==========
Revert of [turbofan] Combine GenericLoweringPhase and ChangeLoweringPhase.
(patchset #1 id:1 of https://codereview.chromium.org/1697133002/ )

Reason for revert:
Seems to tank stuff.

Original issue's description:
> [turbofan] Combine GenericLoweringPhase and ChangeLoweringPhase.
> 
> There's no need to use a dedicated ChangeLoweringPhase before we go to
> GenericLoweringPhase; instead that change lowering (which is really
> simplified lowering by now) should run together with generic lowering.
> 
> R=jarin@chromium.org
> 
> Committed: https://crrev.com/0835ed9caf44427755065eb45f9187678ec9844c
> Cr-Commit-Position: refs/heads/master@{#34008}

TBR=jarin@chromium.org,bmeurer@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

to

==========
Revert of [turbofan] Combine GenericLoweringPhase and ChangeLoweringPhase.
(patchset #1 id:1 of https://codereview.chromium.org/1697133002/ )

Reason for revert:
Seems to tank stuff.

Original issue's description:
> [turbofan] Combine GenericLoweringPhase and ChangeLoweringPhase.
>
> There's no need to use a dedicated ChangeLoweringPhase before we go to
> GenericLoweringPhase; instead that change lowering (which is really
> simplified lowering by now) should run together with generic lowering.
>
> R=jarin@chromium.org
>
> Committed: https://crrev.com/0835ed9caf44427755065eb45f9187678ec9844c
> Cr-Commit-Position: refs/heads/master@{#34008}

TBR=jarin@chromium.org,bmeurer@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/d057adc83ea31a50369b472a8c9a8329d7956feb
Cr-Commit-Position: refs/heads/master@{#34019}
==========

[commit-bot: I haz the power, 2016-02-16 08:25:45]

Patchset 1 (id:??) landed as
https://crrev.com/d057adc83ea31a50369b472a8c9a8329d7956feb
Cr-Commit-Position: refs/heads/master@{#34019}