PPC: [turbofan] Further fixing ES6 tail call elimination in Turbofan.

PPC: [turbofan] Further fixing ES6 tail call elimination in Turbofan.

Port 2aae579cf04b24f605d1ae6b975d67d8dbbee672

Original commit message:
    In case when F tail calls G we should also remove the potential arguments adaptor frame for F.

    This CL introduces two new machine instructions ArchTailCallCodeObjectFromJSFunction and
    ArchTailCallJSFunctionFromJSFunction which (unlike existing ArchTailCallCodeObject and
    ArchTailCallJSFunction) also drop arguments adaptor frame if it exists right before jumping
    to the target function.

R=ishell@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:4698
LOG=N

Committed: https://crrev.com/fcaa643dab7757225697446dcdccd77417d2d899
Cr-Commit-Position: refs/heads/master@{#34589}

[MTBrandyberry, 2016-03-08 05:37:57]

PTAL

[MTBrandyberry, 2016-03-08 05:38:01]

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

[commit-bot: I haz the power, 2016-03-08 05:38:03]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1773053002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1773053002/1

[commit-bot: I haz the power, 2016-03-08 05:52:34]

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

[commit-bot: I haz the power, 2016-03-08 05:52:34]

Dry run: This issue passed the CQ dry run.

[michael_dawson, 2016-03-08 12:36:23]

On 2016/03/08 05:52:34, commit-bot: I haz the power wrote:
> Dry run: This issue passed the CQ dry run.

lgtm

[MTBrandyberry, 2016-03-08 14:47:40]

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

[commit-bot: I haz the power, 2016-03-08 14:47:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1773053002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1773053002/1

[commit-bot: I haz the power, 2016-03-08 14:51:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-08 14:53:27]

Description was changed from

==========
PPC: [turbofan] Further fixing ES6 tail call elimination in Turbofan.

Port 2aae579cf04b24f605d1ae6b975d67d8dbbee672

Original commit message:
    In case when F tail calls G we should also remove the potential arguments
adaptor frame for F.

    This CL introduces two new machine instructions
ArchTailCallCodeObjectFromJSFunction and
    ArchTailCallJSFunctionFromJSFunction which (unlike existing
ArchTailCallCodeObject and
    ArchTailCallJSFunction) also drop arguments adaptor frame if it exists right
before jumping
    to the target function.

R=ishell@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=v8:4698
LOG=N
==========

to

==========
PPC: [turbofan] Further fixing ES6 tail call elimination in Turbofan.

Port 2aae579cf04b24f605d1ae6b975d67d8dbbee672

Original commit message:
    In case when F tail calls G we should also remove the potential arguments
adaptor frame for F.

    This CL introduces two new machine instructions
ArchTailCallCodeObjectFromJSFunction and
    ArchTailCallJSFunctionFromJSFunction which (unlike existing
ArchTailCallCodeObject and
    ArchTailCallJSFunction) also drop arguments adaptor frame if it exists right
before jumping
    to the target function.

R=ishell@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=v8:4698
LOG=N

Committed: https://crrev.com/fcaa643dab7757225697446dcdccd77417d2d899
Cr-Commit-Position: refs/heads/master@{#34589}
==========

[commit-bot: I haz the power, 2016-03-08 14:53:28]

Patchset 1 (id:??) landed as
https://crrev.com/fcaa643dab7757225697446dcdccd77417d2d899
Cr-Commit-Position: refs/heads/master@{#34589}