S390: Get rid of AllocationFlags::TAG_OBJECT

S390: Get rid of AllocationFlags::TAG_OBJECT

Port 9bf7a31a8ced123b8bd051f3ef39625104a1124f

 Original commit message:

        Default (and only way) is now to retrieve a tagged object.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, bjaideep@ca.ibm.com

BUG=

Committed: https://crrev.com/2950df96b9b341b00c5a4daaa183ead303b6394a
Cr-Commit-Position: refs/heads/master@{#35874}

[JoranSiu, 2016-04-27 22:28:57]

lgtm.

On a slightly related note, we should consider using LA instead of AddP to tag
the objects.   LA has a nicer bypass, given the objects will likely be used in
memory references.

[john.yan, 2016-04-28 14:50:30]

lgtm

lgtm

[bcleung, 2016-04-28 15:24:06]

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

[commit-bot: I haz the power, 2016-04-28 15:24:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1929673002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1929673002/1

[commit-bot: I haz the power, 2016-04-28 15:59:36]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-01 22:02:48]

Description was changed from

==========
S390: Get rid of AllocationFlags::TAG_OBJECT

Port 9bf7a31a8ced123b8bd051f3ef39625104a1124f

 Original commit message:

        Default (and only way) is now to retrieve a tagged object.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com,
bjaideep@ca.ibm.com



BUG=
==========

to

==========
S390: Get rid of AllocationFlags::TAG_OBJECT

Port 9bf7a31a8ced123b8bd051f3ef39625104a1124f

 Original commit message:

        Default (and only way) is now to retrieve a tagged object.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com,
bjaideep@ca.ibm.com

BUG=

Committed: https://crrev.com/2950df96b9b341b00c5a4daaa183ead303b6394a
Cr-Commit-Position: refs/heads/master@{#35874}
==========

[commit-bot: I haz the power, 2016-05-01 22:02:49]

Patchset 1 (id:??) landed as
https://crrev.com/2950df96b9b341b00c5a4daaa183ead303b6394a
Cr-Commit-Position: refs/heads/master@{#35874}