X87: InstanceOfStub incorrectly interprets the hole as a prototype.

X87: InstanceOfStub incorrectly interprets the hole as a prototype.

  port 2aa070be4fd2960df98905b254f12ed801ef26cd (r34863)

  original commit message:
  Repair this to match what the runtime correctly does, by first checking if the
  function is a constructor before we access the prototype.

BUG=

Committed: https://crrev.com/5b5d24b308ae48c49480c943049f9c1a7eda5aa7
Cr-Commit-Position: refs/heads/master@{#34880}

[zhengxing.li, 2016-03-18 02:57:40]

zhengxing.li@intel.com changed reviewers:
+ chunyang.dai@intel.com, mvstanton@chromium.org, weiliang.lin@intel.com

[zhengxing.li, 2016-03-18 02:57:41]

PTAL, thanks!

[Weiliang, 2016-03-18 07:22:51]

lgtm

[zhengxing.li, 2016-03-18 07:25:10]

The CQ bit was checked by zhengxing.li@intel.com

[commit-bot: I haz the power, 2016-03-18 07:25:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1809333002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1809333002/1

[commit-bot: I haz the power, 2016-03-18 07:48:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-18 07:50:34]

Description was changed from

==========
X87: InstanceOfStub incorrectly interprets the hole as a prototype.

  port 2aa070be4fd2960df98905b254f12ed801ef26cd (r34863)

  original commit message:
  Repair this to match what the runtime correctly does, by first checking if the
  function is a constructor before we access the prototype.

BUG=
==========

to

==========
X87: InstanceOfStub incorrectly interprets the hole as a prototype.

  port 2aa070be4fd2960df98905b254f12ed801ef26cd (r34863)

  original commit message:
  Repair this to match what the runtime correctly does, by first checking if the
  function is a constructor before we access the prototype.

BUG=

Committed: https://crrev.com/5b5d24b308ae48c49480c943049f9c1a7eda5aa7
Cr-Commit-Position: refs/heads/master@{#34880}
==========

[commit-bot: I haz the power, 2016-03-18 07:50:35]

Patchset 1 (id:??) landed as
https://crrev.com/5b5d24b308ae48c49480c943049f9c1a7eda5aa7
Cr-Commit-Position: refs/heads/master@{#34880}