Revert of [turbofan] Set proper representation for initial arguments length.

Revert of [turbofan] Set proper representation for initial arguments length. (patchset #1 id:1 of https://codereview.chromium.org/2810333004/ )

Reason for revert:
Field representation is not preserved

Original issue's description:
> [turbofan] Set proper representation for initial arguments length.
> 
> The JSArgumentsObject::length representation is initially Smi, so we can
> record that on the initial map and use it to optimize the accesses in
> TurboFan based on that. Similar for JSSloppyArgumentsObject::caller.
> 
> BUG=v8:6262
> R=yangguo@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2810333004
> Cr-Commit-Position: refs/heads/master@{#44644}
> Committed: https://chromium.googlesource.com/v8/v8/+/5eec7df9b319e5b7a8158d82825d61e90a7cfe33

TBR=yangguo@chromium.org,bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:6262
Review-Url: https://codereview.chromium.org/2825323002
Cr-Commit-Position: refs/heads/master@{#44893}
Committed: https://chromium.googlesource.com/v8/v8/+/6b4b0624894ed91e4dcbf708431da78cadd83da8

[Camillo Bruni, 2017-04-19 12:11:22]

Created Revert of [turbofan] Set proper representation for initial arguments
length.

[Camillo Bruni, 2017-04-19 12:20:15]

Patchset #2 (id:70001) has been deleted

[Camillo Bruni, 2017-04-19 12:21:10]

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

[commit-bot: I haz the power, 2017-04-19 12:21:14]

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, 2017-04-19 12:45:22]

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

[commit-bot: I haz the power, 2017-04-19 12:45:23]

Dry run: This issue passed the CQ dry run.

[Benedikt Meurer, 2017-04-19 12:58:25]

LGTM

[Camillo Bruni, 2017-04-26 14:05:27]

The CQ bit was checked by cbruni@chromium.org

[commit-bot: I haz the power, 2017-04-26 14:05:36]

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, 2017-04-26 14:53:22]

CQ is committing da patch.

Bot data: {"patchset_id": 90001, "attempt_start_ts": 1493215527541220,
"parent_rev": "8952aef167e73ceafc05bea4d2f8ff8cf7b6a2dd", "commit_rev":
"6b4b0624894ed91e4dcbf708431da78cadd83da8"}

[commit-bot: I haz the power, 2017-04-26 14:53:29]

Description was changed from

==========
Revert of [turbofan] Set proper representation for initial arguments length.
(patchset #1 id:1 of https://codereview.chromium.org/2810333004/ )

Reason for revert:
Field representation is not preserved

Original issue's description:
> [turbofan] Set proper representation for initial arguments length.
> 
> The JSArgumentsObject::length representation is initially Smi, so we can
> record that on the initial map and use it to optimize the accesses in
> TurboFan based on that. Similar for JSSloppyArgumentsObject::caller.
> 
> BUG=v8:6262
> R=yangguo@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2810333004
> Cr-Commit-Position: refs/heads/master@{#44644}
> Committed:
https://chromium.googlesource.com/v8/v8/+/5eec7df9b319e5b7a8158d82825d61e90a7...

TBR=yangguo@chromium.org,bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:6262
==========

to

==========
Revert of [turbofan] Set proper representation for initial arguments length.
(patchset #1 id:1 of https://codereview.chromium.org/2810333004/ )

Reason for revert:
Field representation is not preserved

Original issue's description:
> [turbofan] Set proper representation for initial arguments length.
> 
> The JSArgumentsObject::length representation is initially Smi, so we can
> record that on the initial map and use it to optimize the accesses in
> TurboFan based on that. Similar for JSSloppyArgumentsObject::caller.
> 
> BUG=v8:6262
> R=yangguo@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2810333004
> Cr-Commit-Position: refs/heads/master@{#44644}
> Committed:
https://chromium.googlesource.com/v8/v8/+/5eec7df9b319e5b7a8158d82825d61e90a7...

TBR=yangguo@chromium.org,bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:6262

Review-Url: https://codereview.chromium.org/2825323002
Cr-Commit-Position: refs/heads/master@{#44893}
Committed:
https://chromium.googlesource.com/v8/v8/+/6b4b0624894ed91e4dcbf708431da78cadd...
==========

[commit-bot: I haz the power, 2017-04-26 14:53:30]

Committed patchset #2 (id:90001) as
https://chromium.googlesource.com/v8/v8/+/6b4b0624894ed91e4dcbf708431da78cadd...