PPC/S390: [Interpreter] Support compiling for baseline on return from interpreted function.

PPC/S390: [Interpreter] Support compiling for baseline on return from interpreted function.

port f241a61a3409cef1f8d631d5c3ee992e182f294e

Original Commit Message:
    We cannot tier up from interpreted to baseline code when there is an
    activation of the function on the stack. This significantly regresses
    the performance of recursive functions since they are unlikely to get
    tiered up.

    This CL adds the ability for a function to be marked for baseline
    compilation when it returns. To do this we patch the
    InterpreterEntryTrampoline return address to point to
    InterpreterMarkBaselineOnReturn, which leaves the
    interpreted frame and recompile the function for
    baseline.

    This improves the score of EarlyBoyer by ~8x for Ignition.

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

Committed: https://crrev.com/31ac67ee61c430f1f66e9d4e707d60b76578e8b7
Cr-Commit-Position: refs/heads/master@{#36384}

[john.yan, 2016-05-19 19:36:18]

PTAL

[john.yan, 2016-05-19 19:36:25]

The CQ bit was checked by jyan@ca.ibm.com to run a CQ dry run

[commit-bot: I haz the power, 2016-05-19 19:36:30]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1993343002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1993343002/1

[MTBrandyberry, 2016-05-19 19:49:15]

LGTM for PPC

[JoranSiu, 2016-05-19 19:55:28]

LGTM for S390

[commit-bot: I haz the power, 2016-05-19 19:56:41]

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

[commit-bot: I haz the power, 2016-05-19 19:56:42]

Dry run: This issue passed the CQ dry run.

[john.yan, 2016-05-19 20:03:49]

The CQ bit was unchecked by jyan@ca.ibm.com

[john.yan, 2016-05-19 20:03:56]

The CQ bit was checked by jyan@ca.ibm.com

[commit-bot: I haz the power, 2016-05-19 20:04:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1993343002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1993343002/1

[commit-bot: I haz the power, 2016-05-19 20:06:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-19 20:06:27]

Description was changed from

==========
PPC/S390: [Interpreter] Support compiling for baseline on return from
interpreted function.

port f241a61a3409cef1f8d631d5c3ee992e182f294e

Original Commit Message:
    We cannot tier up from interpreted to baseline code when there is an
    activation of the function on the stack. This significantly regresses
    the performance of recursive functions since they are unlikely to get
    tiered up.

    This CL adds the ability for a function to be marked for baseline
    compilation when it returns. To do this we patch the
    InterpreterEntryTrampoline return address to point to
    InterpreterMarkBaselineOnReturn, which leaves the
    interpreted frame and recompile the function for
    baseline.

    This improves the score of EarlyBoyer by ~8x for Ignition.

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

to

==========
PPC/S390: [Interpreter] Support compiling for baseline on return from
interpreted function.

port f241a61a3409cef1f8d631d5c3ee992e182f294e

Original Commit Message:
    We cannot tier up from interpreted to baseline code when there is an
    activation of the function on the stack. This significantly regresses
    the performance of recursive functions since they are unlikely to get
    tiered up.

    This CL adds the ability for a function to be marked for baseline
    compilation when it returns. To do this we patch the
    InterpreterEntryTrampoline return address to point to
    InterpreterMarkBaselineOnReturn, which leaves the
    interpreted frame and recompile the function for
    baseline.

    This improves the score of EarlyBoyer by ~8x for Ignition.

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

Committed: https://crrev.com/31ac67ee61c430f1f66e9d4e707d60b76578e8b7
Cr-Commit-Position: refs/heads/master@{#36384}
==========

[commit-bot: I haz the power, 2016-05-19 20:06:29]

Patchset 1 (id:??) landed as
https://crrev.com/31ac67ee61c430f1f66e9d4e707d60b76578e8b7
Cr-Commit-Position: refs/heads/master@{#36384}