Revert of PPC/s390: SmiUntag only for 32bit

Revert of PPC/s390: SmiUntag only for 32bit (patchset #1 id:1 of https://codereview.chromium.org/2842843005/ )

Reason for revert:
few tests are failing with stack overflow, will reland with the fix.

Original issue's description:
> PPC/s390: SmiUntag only for 32bit
> 
> R=joransiu@ca.ibm.com, jyan@ca.ibm.com
> BUG=
> LOG=n
> 
> Review-Url: https://codereview.chromium.org/2842843005
> Cr-Commit-Position: refs/heads/master@{#44908}
> Committed: https://chromium.googlesource.com/v8/v8/+/76dfdb7a32c4be41190ff6a01b23905976e5e0ff

TBR=joransiu@ca.ibm.com,jyan@ca.ibm.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review-Url: https://codereview.chromium.org/2852433002
Cr-Commit-Position: refs/heads/master@{#44936}
Committed: https://chromium.googlesource.com/v8/v8/+/cef9effe66d909a3672dbcb0b28434df8b905d1b

[JaideepBajwa, 2017-04-27 13:32:52]

The CQ bit was checked by bjaideep@ca.ibm.com

[JaideepBajwa, 2017-04-27 13:32:52]

Created Revert of PPC/s390: SmiUntag only for 32bit

[commit-bot: I haz the power, 2017-04-27 13:33:03]

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, 2017-04-27 13:33:04]

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

[commit-bot: I haz the power, 2017-04-27 13:33:04]

No L-G-T-M from a valid reviewer yet.
CQ run can only be started 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.

[john.yan, 2017-04-27 13:46:54]

lgtm

[JaideepBajwa, 2017-04-27 13:47:24]

The CQ bit was checked by bjaideep@ca.ibm.com

[commit-bot: I haz the power, 2017-04-27 13:47:35]

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, 2017-04-27 13:47:43]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493300844211450, "parent_rev":
"90e1ebeef4bf69d8862efe5e71f8b53a7eb644f8", "commit_rev":
"cef9effe66d909a3672dbcb0b28434df8b905d1b"}

[commit-bot: I haz the power, 2017-04-27 13:47:48]

Description was changed from

==========
Revert of PPC/s390: SmiUntag only for 32bit (patchset #1 id:1 of
https://codereview.chromium.org/2842843005/ )

Reason for revert:
few tests are failing with stack overflow, will reland with the fix.

Original issue's description:
> PPC/s390: SmiUntag only for 32bit
> 
> R=joransiu@ca.ibm.com, jyan@ca.ibm.com
> BUG=
> LOG=n
> 
> Review-Url: https://codereview.chromium.org/2842843005
> Cr-Commit-Position: refs/heads/master@{#44908}
> Committed:
https://chromium.googlesource.com/v8/v8/+/76dfdb7a32c4be41190ff6a01b23905976e...

TBR=joransiu@ca.ibm.com,jyan@ca.ibm.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
==========

to

==========
Revert of PPC/s390: SmiUntag only for 32bit (patchset #1 id:1 of
https://codereview.chromium.org/2842843005/ )

Reason for revert:
few tests are failing with stack overflow, will reland with the fix.

Original issue's description:
> PPC/s390: SmiUntag only for 32bit
> 
> R=joransiu@ca.ibm.com, jyan@ca.ibm.com
> BUG=
> LOG=n
> 
> Review-Url: https://codereview.chromium.org/2842843005
> Cr-Commit-Position: refs/heads/master@{#44908}
> Committed:
https://chromium.googlesource.com/v8/v8/+/76dfdb7a32c4be41190ff6a01b23905976e...

TBR=joransiu@ca.ibm.com,jyan@ca.ibm.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review-Url: https://codereview.chromium.org/2852433002
Cr-Commit-Position: refs/heads/master@{#44936}
Committed:
https://chromium.googlesource.com/v8/v8/+/cef9effe66d909a3672dbcb0b28434df8b9...
==========

[commit-bot: I haz the power, 2017-04-27 13:47:49]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/cef9effe66d909a3672dbcb0b28434df8b9...