Make arguments adaptor not clobber new.target.

Make arguments adaptor not clobber new.target.

This ensures that the ArgumentsAdaptorTrampoline does not clobber the
new.target value, but rather passes it through to the callee unaltered.
Note that callees do not yet use the new.target value so far.

This is a preparatory CL to allows us passing new.target in a register
instead of via a side-channel through the construct stub frame.

R=mvstanton@chromium.org
BUG=v8:4544
LOG=n

Committed: https://crrev.com/c1e7c8d972e8a42878dcae6bf1ad33997608e7b3
Cr-Commit-Position: refs/heads/master@{#32171}

[Michael Starzinger, 2015-11-20 13:12:05]

Description was changed from

==========
Make arguments adaptor does not clobber new.target.

This nesures that the ArgumentsAdaptorTrampoline does not clobber the
new.target value, but rather passes it through to the callee unaltered.
Note that callees do not yet use the new.target value so far.

This is a preparatory CL to allows us passing new.target in a register
instead of via a side-channel through the construct stub frame.

R=bmeurer@chromium.org
BUG=v8:4544
LOG=n
==========

to

==========
Make arguments adaptor does not clobber new.target.

This ensures that the ArgumentsAdaptorTrampoline does not clobber the
new.target value, but rather passes it through to the callee unaltered.
Note that callees do not yet use the new.target value so far.

This is a preparatory CL to allows us passing new.target in a register
instead of via a side-channel through the construct stub frame.

R=mvstanton@chromium.org
BUG=v8:4544
LOG=n
==========

[Michael Starzinger, 2015-11-20 13:12:05]

mstarzinger@chromium.org changed reviewers:
+ mvstanton@chromium.org
- bmeurer@chromium.org

[Michael Starzinger, 2015-11-20 13:12:22]

Description was changed from

==========
Make arguments adaptor does not clobber new.target.

This ensures that the ArgumentsAdaptorTrampoline does not clobber the
new.target value, but rather passes it through to the callee unaltered.
Note that callees do not yet use the new.target value so far.

This is a preparatory CL to allows us passing new.target in a register
instead of via a side-channel through the construct stub frame.

R=mvstanton@chromium.org
BUG=v8:4544
LOG=n
==========

to

==========
Make arguments adaptor not clobber new.target.

This ensures that the ArgumentsAdaptorTrampoline does not clobber the
new.target value, but rather passes it through to the callee unaltered.
Note that callees do not yet use the new.target value so far.

This is a preparatory CL to allows us passing new.target in a register
instead of via a side-channel through the construct stub frame.

R=mvstanton@chromium.org
BUG=v8:4544
LOG=n
==========

[Michael Starzinger, 2015-11-20 15:55:51]

Ports done. This is ready for final review. Thanks!

[mvstanton, 2015-11-20 19:55:20]

LGTM, nice touch to move the stack check...

[Michael Starzinger, 2015-11-23 09:23:49]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2015-11-23 09:24:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1458103003/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1458103003/60001

[commit-bot: I haz the power, 2015-11-23 09:54:57]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-11-23 09:55:41]

Patchset 4 (id:??) landed as
https://crrev.com/c1e7c8d972e8a42878dcae6bf1ad33997608e7b3
Cr-Commit-Position: refs/heads/master@{#32171}