PPC/s390: Reland: [Interpreter] Transition JSFunctions to call optimized code when possible.

PPC/s390: Reland: [Interpreter] Transition JSFunctions to call optimized code when possible.

Port 73d21080c96dc41caf7abcff6d22578520e50fd3

Original Commit Message:

    Now that the optimized code hangs off the feedback vector, it is possible
    to check whether a function has optimized code available every time it's
    called in the interpreter entry trampoline. If optimized code exists, the
    interpreter entry trampoline 'self-heals' the closure to point to the
    optimized code and links the closure into the optimized code list.

R=rmcilroy@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:6246
LOG=N

Review-Url: https://codereview.chromium.org/2897483002
Cr-Commit-Position: refs/heads/master@{#45410}
Committed: https://chromium.googlesource.com/v8/v8/+/fc738f1e3264820a84ae0bc4ca9c045ca1469c8a

[JaideepBajwa, 2017-05-18 23:07:54]

ptal

[john.yan, 2017-05-18 23:08:50]

lgtm

[JaideepBajwa, 2017-05-18 23:09:01]

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

[commit-bot: I haz the power, 2017-05-18 23:09:11]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-18 23:38:20]

CQ is committing da patch.

Bot data: {"patchset_id": 40001, "attempt_start_ts": 1495148941434510,
"parent_rev": "55849b167c16bb7f87b5c747b02d27f531bc4086", "commit_rev":
"fc738f1e3264820a84ae0bc4ca9c045ca1469c8a"}

[commit-bot: I haz the power, 2017-05-18 23:38:28]

Description was changed from

==========
PPC/s390: Reland: [Interpreter] Transition JSFunctions to call optimized code
when possible.

Port 73d21080c96dc41caf7abcff6d22578520e50fd3

Original Commit Message:

    Now that the optimized code hangs off the feedback vector, it is possible
    to check whether a function has optimized code available every time it's
    called in the interpreter entry trampoline. If optimized code exists, the
    interpreter entry trampoline 'self-heals' the closure to point to the
    optimized code and links the closure into the optimized code list.

R=rmcilroy@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=v8:6246
LOG=N
==========

to

==========
PPC/s390: Reland: [Interpreter] Transition JSFunctions to call optimized code
when possible.

Port 73d21080c96dc41caf7abcff6d22578520e50fd3

Original Commit Message:

    Now that the optimized code hangs off the feedback vector, it is possible
    to check whether a function has optimized code available every time it's
    called in the interpreter entry trampoline. If optimized code exists, the
    interpreter entry trampoline 'self-heals' the closure to point to the
    optimized code and links the closure into the optimized code list.

R=rmcilroy@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=v8:6246
LOG=N

Review-Url: https://codereview.chromium.org/2897483002
Cr-Commit-Position: refs/heads/master@{#45410}
Committed:
https://chromium.googlesource.com/v8/v8/+/fc738f1e3264820a84ae0bc4ca9c045ca14...
==========

[commit-bot: I haz the power, 2017-05-18 23:38:29]

Committed patchset #3 (id:40001) as
https://chromium.googlesource.com/v8/v8/+/fc738f1e3264820a84ae0bc4ca9c045ca14...