Revert of [turbofan] Improve lowering of ObjectIs<Type> somewhat.

Revert of [turbofan] Improve lowering of ObjectIs<Type> somewhat. (patchset #1 id:1 of https://codereview.chromium.org/1872143002/ )

Reason for revert:
Looking at types in ChangeLowering is generally unsafe.

Original issue's description:
> [turbofan] Improve lowering of ObjectIs<Type> somewhat.
>
> If we already know that the input to one of the ObjectIs<Type> nodes is
> TaggedPointer, we don't need to perform the Smi check at runtime.
>
> R=jarin@chromium.org
>
> Committed: https://crrev.com/4fc4978cee0bb7ad2ae8681a67b7032eba6a7d11
> Cr-Commit-Position: refs/heads/master@{#35368}

TBR=jarin@chromium.org,bmeurer@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.

Committed: https://crrev.com/d197ba5b0e12e21f902cd241c14e9cce2ad4dd88
Cr-Commit-Position: refs/heads/master@{#35551}

[Benedikt Meurer, 2016-04-16 19:00:35]

Created Revert of [turbofan] Improve lowering of ObjectIs<Type> somewhat.

[commit-bot: I haz the power, 2016-04-16 19:00:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1893123002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1893123002/1

[commit-bot: I haz the power, 2016-04-16 19:02:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1893123002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1893123002/1

[commit-bot: I haz the power, 2016-04-16 19:25:37]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-16 19:26:10]

Description was changed from

==========
Revert of [turbofan] Improve lowering of ObjectIs<Type> somewhat. (patchset #1
id:1 of https://codereview.chromium.org/1872143002/ )

Reason for revert:
Looking at types in ChangeLowering is generally unsafe.

Original issue's description:
> [turbofan] Improve lowering of ObjectIs<Type> somewhat.
> 
> If we already know that the input to one of the ObjectIs<Type> nodes is
> TaggedPointer, we don't need to perform the Smi check at runtime.
> 
> R=jarin@chromium.org
> 
> Committed: https://crrev.com/4fc4978cee0bb7ad2ae8681a67b7032eba6a7d11
> Cr-Commit-Position: refs/heads/master@{#35368}

TBR=jarin@chromium.org,bmeurer@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
==========

to

==========
Revert of [turbofan] Improve lowering of ObjectIs<Type> somewhat. (patchset #1
id:1 of https://codereview.chromium.org/1872143002/ )

Reason for revert:
Looking at types in ChangeLowering is generally unsafe.

Original issue's description:
> [turbofan] Improve lowering of ObjectIs<Type> somewhat.
>
> If we already know that the input to one of the ObjectIs<Type> nodes is
> TaggedPointer, we don't need to perform the Smi check at runtime.
>
> R=jarin@chromium.org
>
> Committed: https://crrev.com/4fc4978cee0bb7ad2ae8681a67b7032eba6a7d11
> Cr-Commit-Position: refs/heads/master@{#35368}

TBR=jarin@chromium.org,bmeurer@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.

Committed: https://crrev.com/d197ba5b0e12e21f902cd241c14e9cce2ad4dd88
Cr-Commit-Position: refs/heads/master@{#35551}
==========

[commit-bot: I haz the power, 2016-04-16 19:26:11]

Patchset 1 (id:??) landed as
https://crrev.com/d197ba5b0e12e21f902cd241c14e9cce2ad4dd88
Cr-Commit-Position: refs/heads/master@{#35551}