Revert of [turbofan] Extend escape analysis to reduce certain CheckMaps.

Revert of [turbofan] Extend escape analysis to reduce certain CheckMaps. (patchset #1 id:1 of https://codereview.chromium.org/2964473002/ )

Reason for revert:
Speculative revert for tiny fire on Canary (crbug.com/738781)

Original issue's description:
> [turbofan] Extend escape analysis to reduce certain CheckMaps.
> 
> Enable the experimental support in escape analysis to deal with
> constant-foldable CheckMaps nodes and remove them from the effect
> chain w/o blocking the scalar replacement of the object.
> 
> BUG=v8:4586, v8:5267
> R=tebbi@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2964473002
> Cr-Commit-Position: refs/heads/master@{#46311}
> Committed: https://chromium.googlesource.com/v8/v8/+/adf7f54e24c4b31207b4df0e30c28f7579b18f5c

TBR=tebbi@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:4586, v8:5267
Review-Url: https://codereview.chromium.org/2970663002
Cr-Commit-Position: refs/heads/master@{#46372}
Committed: https://chromium.googlesource.com/v8/v8/+/9e7b928f0f8be2de8f63424f9adb31cf52f3be81

[Benedikt Meurer, 2017-07-03 07:13:21]

The CQ bit was checked by bmeurer@chromium.org

[Benedikt Meurer, 2017-07-03 07:13:21]

Created Revert of [turbofan] Extend escape analysis to reduce certain CheckMaps.

[commit-bot: I haz the power, 2017-07-03 07:13:30]

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, 2017-07-03 07:39:34]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1499066001193080, "parent_rev":
"3269141cbe09df9ce8bcccc62804b1a9827a096b", "commit_rev":
"9e7b928f0f8be2de8f63424f9adb31cf52f3be81"}

[commit-bot: I haz the power, 2017-07-03 07:39:40]

Description was changed from

==========
Revert of [turbofan] Extend escape analysis to reduce certain CheckMaps.
(patchset #1 id:1 of https://codereview.chromium.org/2964473002/ )

Reason for revert:
Speculative revert for tiny fire on Canary (crbug.com/738781)

Original issue's description:
> [turbofan] Extend escape analysis to reduce certain CheckMaps.
> 
> Enable the experimental support in escape analysis to deal with
> constant-foldable CheckMaps nodes and remove them from the effect
> chain w/o blocking the scalar replacement of the object.
> 
> BUG=v8:4586,v8:5267
> R=tebbi@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2964473002
> Cr-Commit-Position: refs/heads/master@{#46311}
> Committed:
https://chromium.googlesource.com/v8/v8/+/adf7f54e24c4b31207b4df0e30c28f7579b...

TBR=tebbi@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:4586,v8:5267
==========

to

==========
Revert of [turbofan] Extend escape analysis to reduce certain CheckMaps.
(patchset #1 id:1 of https://codereview.chromium.org/2964473002/ )

Reason for revert:
Speculative revert for tiny fire on Canary (crbug.com/738781)

Original issue's description:
> [turbofan] Extend escape analysis to reduce certain CheckMaps.
> 
> Enable the experimental support in escape analysis to deal with
> constant-foldable CheckMaps nodes and remove them from the effect
> chain w/o blocking the scalar replacement of the object.
> 
> BUG=v8:4586,v8:5267
> R=tebbi@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2964473002
> Cr-Commit-Position: refs/heads/master@{#46311}
> Committed:
https://chromium.googlesource.com/v8/v8/+/adf7f54e24c4b31207b4df0e30c28f7579b...

TBR=tebbi@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:4586,v8:5267

Review-Url: https://codereview.chromium.org/2970663002
Cr-Commit-Position: refs/heads/master@{#46372}
Committed:
https://chromium.googlesource.com/v8/v8/+/9e7b928f0f8be2de8f63424f9adb31cf52f...
==========

[commit-bot: I haz the power, 2017-07-03 07:39:41]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/9e7b928f0f8be2de8f63424f9adb31cf52f...