PPC: [stubs] Introduce a dedicated FastNewObjectStub.

PPC: [stubs] Introduce a dedicated FastNewObjectStub.

Port ba2077aac3a775523ca3fc9600fcf76f55e8d1c2

Original commit message:
    Move the already existing fast case for %NewObject into a dedicated
    FastNewObjectStub that we can utilize in places where we would otherwise
    fallback to %NewObject immediately, which is rather expensive.

    Also use FastNewObjectStub as the generic implementation of JSCreate,
    which should make constructor inlining based on SharedFunctionInfo (w/o
    specializing to a concrete closure) viable soon.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/a509b105d85821c87e2a8530369160be559e500b
Cr-Commit-Position: refs/heads/master@{#34169}

[MTBrandyberry, 2016-02-19 18:34:04]

The CQ bit was checked by mbrandy@us.ibm.com to run a CQ dry run

[commit-bot: I haz the power, 2016-02-19 18:34:12]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1714123002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1714123002/1

[JoranSiu, 2016-02-19 18:36:45]

On 2016/02/19 18:34:12, commit-bot: I haz the power wrote:
> Dry run: CQ is trying da patch. Follow status at
>  https://chromium-cq-status.appspot.com/patch-status/1714123002/1
> View timeline at
>  https://chromium-cq-status.appspot.com/patch-timeline/1714123002/1

lgtm

[commit-bot: I haz the power, 2016-02-19 18:53:02]

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

[commit-bot: I haz the power, 2016-02-19 18:53:03]

Dry run: This issue passed the CQ dry run.

[MTBrandyberry, 2016-02-19 18:56:11]

The CQ bit was checked by mbrandy@us.ibm.com

[commit-bot: I haz the power, 2016-02-19 18:56:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1714123002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1714123002/1

[commit-bot: I haz the power, 2016-02-19 18:58:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-19 18:58:14]

Description was changed from

==========
PPC: [stubs] Introduce a dedicated FastNewObjectStub.

Port ba2077aac3a775523ca3fc9600fcf76f55e8d1c2

Original commit message:
    Move the already existing fast case for %NewObject into a dedicated
    FastNewObjectStub that we can utilize in places where we would otherwise
    fallback to %NewObject immediately, which is rather expensive.

    Also use FastNewObjectStub as the generic implementation of JSCreate,
    which should make constructor inlining based on SharedFunctionInfo (w/o
    specializing to a concrete closure) viable soon.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=
==========

to

==========
PPC: [stubs] Introduce a dedicated FastNewObjectStub.

Port ba2077aac3a775523ca3fc9600fcf76f55e8d1c2

Original commit message:
    Move the already existing fast case for %NewObject into a dedicated
    FastNewObjectStub that we can utilize in places where we would otherwise
    fallback to %NewObject immediately, which is rather expensive.

    Also use FastNewObjectStub as the generic implementation of JSCreate,
    which should make constructor inlining based on SharedFunctionInfo (w/o
    specializing to a concrete closure) viable soon.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/a509b105d85821c87e2a8530369160be559e500b
Cr-Commit-Position: refs/heads/master@{#34169}
==========

[commit-bot: I haz the power, 2016-02-19 18:58:16]

Patchset 1 (id:??) landed as
https://crrev.com/a509b105d85821c87e2a8530369160be559e500b
Cr-Commit-Position: refs/heads/master@{#34169}

[ascy, 2016-02-21 08:58:12]

familyascy56@gmail.com changed reviewers:
+ familyascy56@gmail.com

[ascy, 2016-02-21 08:58:13]

lgtm