MIPS: Fix [runtime] [proxy] implement [[Construct]].

MIPS: Fix [runtime] [proxy] implement [[Construct]].

Avoid overwrite of instance type while checking IsCallable() (t2->t3).
Also slightly optimize push of register pair.

TEST=mjsunit/harmony/proxies-construct
BUG=

Committed: https://crrev.com/aa5eb1e0ed4709e3e417dd7ce77112626378cb3a
Cr-Commit-Position: refs/heads/master@{#32736}

[paul.l..., 2015-12-10 05:33:24]

paul.lind@imgtec.com changed reviewers:
+ akos.palfi@imgtec.com, balazs.kilvady@imgtec.com, cbruni@chromium.org,
ivica.bogosavljevic@imgtec.com

[paul.l..., 2015-12-10 05:33:24]

PTAL.

[akos.palfi.imgtec, 2015-12-10 07:12:57]

Lgtm

[paul.l..., 2015-12-10 07:13:42]

The CQ bit was checked by paul.lind@imgtec.com

[commit-bot: I haz the power, 2015-12-10 07:13:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1510493011/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1510493011/1

[commit-bot: I haz the power, 2015-12-10 07:32:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-10 07:33:28]

Description was changed from

==========
MIPS: Fix [runtime] [proxy] implement [[Construct]].

Avoid overwrite of instance type while checking IsCallable() (t2->t3).
Also slightly optimize push of register pair.

TEST=mjsunit/harmony/proxies-construct
BUG=
==========

to

==========
MIPS: Fix [runtime] [proxy] implement [[Construct]].

Avoid overwrite of instance type while checking IsCallable() (t2->t3).
Also slightly optimize push of register pair.

TEST=mjsunit/harmony/proxies-construct
BUG=

Committed: https://crrev.com/aa5eb1e0ed4709e3e417dd7ce77112626378cb3a
Cr-Commit-Position: refs/heads/master@{#32736}
==========

[commit-bot: I haz the power, 2015-12-10 07:33:29]

Patchset 1 (id:??) landed as
https://crrev.com/aa5eb1e0ed4709e3e417dd7ce77112626378cb3a
Cr-Commit-Position: refs/heads/master@{#32736}