PPC: [fullcodegen] Implement control flow across do-expressions.

PPC: [fullcodegen] Implement control flow across do-expressions.

Port ee8108b71c7e63392ba9814d859aa06f47acf5e5

Original commit message:
    This implements proper handling of local control flow (i.e. break and
    continue) that spans the boundary of a do-expression. We can no longer
    determine the number of operands to be dropped from the nesting of
    statements alone, instead we use the new precise operand stack depth
    tracking.

R=mstarzinger@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
TEST=mjsunit/harmony/do-expressions-control
BUG=v8:4488
LOG=n

Committed: https://crrev.com/54d6d35a07cd772859a0c677d7afeba9430879fc
Cr-Commit-Position: refs/heads/master@{#34264}

[MTBrandyberry, 2016-02-24 18:56:31]

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

[commit-bot: I haz the power, 2016-02-24 18:56:47]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1735623002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1735623002/1

[Michael Starzinger, 2016-02-24 19:08:04]

LGTM. Thanks!

[commit-bot: I haz the power, 2016-02-24 19:17:19]

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

[commit-bot: I haz the power, 2016-02-24 19:17:20]

Dry run: This issue passed the CQ dry run.

[MTBrandyberry, 2016-02-24 19:19:22]

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

[commit-bot: I haz the power, 2016-02-24 19:19:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1735623002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1735623002/1

[commit-bot: I haz the power, 2016-02-24 19:21:21]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-24 19:21:32]

Description was changed from

==========
PPC: [fullcodegen] Implement control flow across do-expressions.

Port ee8108b71c7e63392ba9814d859aa06f47acf5e5

Original commit message:
    This implements proper handling of local control flow (i.e. break and
    continue) that spans the boundary of a do-expression. We can no longer
    determine the number of operands to be dropped from the nesting of
    statements alone, instead we use the new precise operand stack depth
    tracking.

R=mstarzinger@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
TEST=mjsunit/harmony/do-expressions-control
BUG=v8:4488
LOG=n
==========

to

==========
PPC: [fullcodegen] Implement control flow across do-expressions.

Port ee8108b71c7e63392ba9814d859aa06f47acf5e5

Original commit message:
    This implements proper handling of local control flow (i.e. break and
    continue) that spans the boundary of a do-expression. We can no longer
    determine the number of operands to be dropped from the nesting of
    statements alone, instead we use the new precise operand stack depth
    tracking.

R=mstarzinger@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
TEST=mjsunit/harmony/do-expressions-control
BUG=v8:4488
LOG=n

Committed: https://crrev.com/54d6d35a07cd772859a0c677d7afeba9430879fc
Cr-Commit-Position: refs/heads/master@{#34264}
==========

[commit-bot: I haz the power, 2016-02-24 19:21:33]

Patchset 1 (id:??) landed as
https://crrev.com/54d6d35a07cd772859a0c677d7afeba9430879fc
Cr-Commit-Position: refs/heads/master@{#34264}