PPC: [runtime] Throw exception for derived constructors in correct context.

PPC: [runtime] Throw exception for derived constructors in correct context.

Port c86f1897ac52f2cae088d6cab8843216bdaa9396

Original commit message:
    When derived constructors return a non-object (or not undefined) we
    currently throw an exception directly in the callee context. This was
    achieved by desugaring the return statement for derived classes. To
    be spec compliamnt a separate ConstructStubForDerived is introduced.
    Instead of trowing directly, the desugared return statement inside
    a derived constructor only returns an integer to indicate an incompatible
    result.

R=cbruni@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:4509
LOG=n

Committed: https://crrev.com/bbb95fba40817494752bbd231260b38ab7277aaf
Cr-Commit-Position: refs/heads/master@{#33341}

[MTBrandyberry, 2016-01-15 18:15:58]

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

[commit-bot: I haz the power, 2016-01-15 18:16:04]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1595593002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1595593002/1

[commit-bot: I haz the power, 2016-01-15 18:38:15]

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

[commit-bot: I haz the power, 2016-01-15 18:38:16]

Dry run: This issue passed the CQ dry run.

[john.yan, 2016-01-15 19:01:21]

lgtm

[MTBrandyberry, 2016-01-15 19:03:05]

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

[commit-bot: I haz the power, 2016-01-15 19:03:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1595593002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1595593002/1

[commit-bot: I haz the power, 2016-01-15 19:04:32]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-15 19:05:33]

Description was changed from

==========
PPC: [runtime] Throw exception for derived constructors in correct context.

Port c86f1897ac52f2cae088d6cab8843216bdaa9396

Original commit message:
    When derived constructors return a non-object (or not undefined) we
    currently throw an exception directly in the callee context. This was
    achieved by desugaring the return statement for derived classes. To
    be spec compliamnt a separate ConstructStubForDerived is introduced.
    Instead of trowing directly, the desugared return statement inside
    a derived constructor only returns an integer to indicate an incompatible
    result.

R=cbruni@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=v8:4509
LOG=n
==========

to

==========
PPC: [runtime] Throw exception for derived constructors in correct context.

Port c86f1897ac52f2cae088d6cab8843216bdaa9396

Original commit message:
    When derived constructors return a non-object (or not undefined) we
    currently throw an exception directly in the callee context. This was
    achieved by desugaring the return statement for derived classes. To
    be spec compliamnt a separate ConstructStubForDerived is introduced.
    Instead of trowing directly, the desugared return statement inside
    a derived constructor only returns an integer to indicate an incompatible
    result.

R=cbruni@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=v8:4509
LOG=n

Committed: https://crrev.com/bbb95fba40817494752bbd231260b38ab7277aaf
Cr-Commit-Position: refs/heads/master@{#33341}
==========

[commit-bot: I haz the power, 2016-01-15 19:05:34]

Patchset 1 (id:??) landed as
https://crrev.com/bbb95fba40817494752bbd231260b38ab7277aaf
Cr-Commit-Position: refs/heads/master@{#33341}