PPC: [Interpreter] Save bytecode offset in interpreter stack frames.

PPC: [Interpreter] Save bytecode offset in interpreter stack frames.

Port 025d476cf57ce8695f8e36906e4863b17c981747

Original commit message:
    Adds a slot for the bytecode offset to interpreter stack frames and
    saves it on calls, and restores after calls.

    Also fixes RawMachineAssembler::Return() to call MergeControlToEnd.

R=rmcilroy@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:4280
LOG=N

Committed: https://crrev.com/c36a1b978c5de455dcae75e96f53e9e803e2019b
Cr-Commit-Position: refs/heads/master@{#32920}

[MTBrandyberry, 2015-12-16 20:18:10]

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

[commit-bot: I haz the power, 2015-12-16 20:18:16]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1531873002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1531873002/1

[commit-bot: I haz the power, 2015-12-16 20:36:07]

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

[commit-bot: I haz the power, 2015-12-16 20:36:08]

Dry run: This issue passed the CQ dry run.

[michael_dawson, 2015-12-16 20:39:05]

On 2015/12/16 20:36:08, commit-bot: I haz the power wrote:
> Dry run: This issue passed the CQ dry run.

lgtm

[MTBrandyberry, 2015-12-16 20:39:46]

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

[commit-bot: I haz the power, 2015-12-16 20:40:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1531873002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1531873002/1

[commit-bot: I haz the power, 2015-12-16 20:44:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-16 20:45:09]

Description was changed from

==========
PPC: [Interpreter] Save bytecode offset in interpreter stack frames.

Port 025d476cf57ce8695f8e36906e4863b17c981747

Original commit message:
    Adds a slot for the bytecode offset to interpreter stack frames and
    saves it on calls, and restores after calls.

    Also fixes RawMachineAssembler::Return() to call MergeControlToEnd.

R=rmcilroy@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=v8:4280
LOG=N
==========

to

==========
PPC: [Interpreter] Save bytecode offset in interpreter stack frames.

Port 025d476cf57ce8695f8e36906e4863b17c981747

Original commit message:
    Adds a slot for the bytecode offset to interpreter stack frames and
    saves it on calls, and restores after calls.

    Also fixes RawMachineAssembler::Return() to call MergeControlToEnd.

R=rmcilroy@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=v8:4280
LOG=N

Committed: https://crrev.com/c36a1b978c5de455dcae75e96f53e9e803e2019b
Cr-Commit-Position: refs/heads/master@{#32920}
==========

[commit-bot: I haz the power, 2015-12-16 20:45:10]

Patchset 1 (id:??) landed as
https://crrev.com/c36a1b978c5de455dcae75e96f53e9e803e2019b
Cr-Commit-Position: refs/heads/master@{#32920}