PPC/s390: [es2015] Simplify contract between parser and stub for derived constructors.

PPC/s390: [es2015] Simplify contract between parser and stub for derived constructors.

Port 776d89f9ce6e043972c1e611aa8cfaf2feb1fb78

Original Commit Message:

    Rewrite returns in derived constructors to only replace undefined with
    this, and otherwise just return the value, and let the construct stub
    builtin throw an exception if the result is a primitive instead of a
    JSReceiver.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=chromium:706642
LOG=N

Review-Url: https://codereview.chromium.org/2786413003
Cr-Commit-Position: refs/heads/master@{#44315}
Committed: https://chromium.googlesource.com/v8/v8/+/889d205b523c19e34c75770ff045a4c65d530635

[JaideepBajwa, 2017-03-31 16:18:57]

ptal

[john.yan, 2017-03-31 16:19:15]

lgtm

[JaideepBajwa, 2017-03-31 16:19:46]

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

[commit-bot: I haz the power, 2017-03-31 16:19:57]

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, 2017-03-31 16:45:47]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490977186054860, "parent_rev":
"8ed72f91a01a72b9adb8125b53f19cbaa50c694c", "commit_rev":
"889d205b523c19e34c75770ff045a4c65d530635"}

[commit-bot: I haz the power, 2017-03-31 16:45:53]

Description was changed from

==========
PPC/s390: [es2015] Simplify contract between parser and stub for derived
constructors.

Port 776d89f9ce6e043972c1e611aa8cfaf2feb1fb78

Original Commit Message:

    Rewrite returns in derived constructors to only replace undefined with
    this, and otherwise just return the value, and let the construct stub
    builtin throw an exception if the result is a primitive instead of a
    JSReceiver.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=chromium:706642
LOG=N
==========

to

==========
PPC/s390: [es2015] Simplify contract between parser and stub for derived
constructors.

Port 776d89f9ce6e043972c1e611aa8cfaf2feb1fb78

Original Commit Message:

    Rewrite returns in derived constructors to only replace undefined with
    this, and otherwise just return the value, and let the construct stub
    builtin throw an exception if the result is a primitive instead of a
    JSReceiver.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=chromium:706642
LOG=N

Review-Url: https://codereview.chromium.org/2786413003
Cr-Commit-Position: refs/heads/master@{#44315}
Committed:
https://chromium.googlesource.com/v8/v8/+/889d205b523c19e34c75770ff045a4c65d5...
==========

[commit-bot: I haz the power, 2017-03-31 16:45:54]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/889d205b523c19e34c75770ff045a4c65d5...