Revert of [turbofan] fix another divergence in escape analysis

Revert of [turbofan] fix another divergence in escape analysis (patchset #1 id:1 of https://codereview.chromium.org/2599793002/ )

Reason for revert:
Caused memory corruption.

BUG=chromium:676767
Original issue's description:
> [turbofan] fix another divergence in escape analysis
> 
> This divergence bug is very similar to the one fixed in https://codereview.chromium.org/2522253002/, this time it is an oscillation between a cleared field and a new phi node. The page http://www.sears.com/clothing-shoes-jewelry-clothing-men-s-clothing-men-s-jeans/b-1325287370?Brand=LEE&filterList=Brand&sortOption=UNITS_HIGH_TO_LOW allows for a reliable reproduction.
> 
> This fix makes sure that once a field that generated a phi gets cleared, it always stays cleared.
> 
> BUG=chromium:670202
> 
> R=bmeurer@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2599793002
> Cr-Commit-Position: refs/heads/master@{#41922}
> Committed: https://chromium.googlesource.com/v8/v8/+/8435cc852672c504d5899cc2765c5b895e658efe

TBR=bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:670202
Review-Url: https://codereview.chromium.org/2611623002
Cr-Commit-Position: refs/heads/master@{#42023}
Committed: https://chromium.googlesource.com/v8/v8/+/e3ac5a31cb645974b02e1d7b238f6a9c35ab0f5b

[Tobias Tebbi, 2017-01-03 09:36:08]

The CQ bit was checked by tebbi@chromium.org

[Tobias Tebbi, 2017-01-03 09:36:09]

Created Revert of [turbofan] fix another divergence in escape analysis

[commit-bot: I haz the power, 2017-01-03 09:36:11]

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, 2017-01-03 09:36:12]

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

[commit-bot: I haz the power, 2017-01-03 09:36:12]

No L-G-T-M from a valid reviewer yet. 
CQ run can only be started by full committers or once the patch has
received an L-G-T-M from a full committer.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
Committers are members of the group "project-v8-committers".
Note that this has nothing to do with OWNERS files.

[Benedikt Meurer, 2017-01-03 10:45:04]

LGTM

[Tobias Tebbi, 2017-01-03 10:47:19]

The CQ bit was checked by tebbi@chromium.org

[commit-bot: I haz the power, 2017-01-03 10:47:24]

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, 2017-01-03 11:12:05]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1483440439767380, "parent_rev":
"1795343f3c0ff1f43bdde3e5f16cd65c0882ae67", "commit_rev":
"e3ac5a31cb645974b02e1d7b238f6a9c35ab0f5b"}

[commit-bot: I haz the power, 2017-01-03 11:12:09]

Description was changed from

==========
Revert of [turbofan] fix another divergence in escape analysis (patchset #1 id:1
of https://codereview.chromium.org/2599793002/ )

Reason for revert:
Caused memory corruption.

BUG=chromium:676767

Original issue's description:
> [turbofan] fix another divergence in escape analysis
> 
> This divergence bug is very similar to the one fixed in
https://codereview.chromium.org/2522253002/, this time it is an oscillation
between a cleared field and a new phi node. The page
http://www.sears.com/clothing-shoes-jewelry-clothing-men-s-clothing-men-s-jea...
allows for a reliable reproduction.
> 
> This fix makes sure that once a field that generated a phi gets cleared, it
always stays cleared.
> 
> BUG=chromium:670202
> 
> R=bmeurer@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2599793002
> Cr-Commit-Position: refs/heads/master@{#41922}
> Committed:
https://chromium.googlesource.com/v8/v8/+/8435cc852672c504d5899cc2765c5b895e6...

TBR=bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:670202
==========

to

==========
Revert of [turbofan] fix another divergence in escape analysis (patchset #1 id:1
of https://codereview.chromium.org/2599793002/ )

Reason for revert:
Caused memory corruption.

BUG=chromium:676767

Original issue's description:
> [turbofan] fix another divergence in escape analysis
> 
> This divergence bug is very similar to the one fixed in
https://codereview.chromium.org/2522253002/, this time it is an oscillation
between a cleared field and a new phi node. The page
http://www.sears.com/clothing-shoes-jewelry-clothing-men-s-clothing-men-s-jea...
allows for a reliable reproduction.
> 
> This fix makes sure that once a field that generated a phi gets cleared, it
always stays cleared.
> 
> BUG=chromium:670202
> 
> R=bmeurer@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2599793002
> Cr-Commit-Position: refs/heads/master@{#41922}
> Committed:
https://chromium.googlesource.com/v8/v8/+/8435cc852672c504d5899cc2765c5b895e6...

TBR=bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:670202

Review-Url: https://codereview.chromium.org/2611623002
Cr-Commit-Position: refs/heads/master@{#42023}
Committed:
https://chromium.googlesource.com/v8/v8/+/e3ac5a31cb645974b02e1d7b238f6a9c35a...
==========

[commit-bot: I haz the power, 2017-01-03 11:12:10]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/e3ac5a31cb645974b02e1d7b238f6a9c35a...