X87: [stubs] Introduce a dedicated FastNewObjectStub.

X87: [stubs] Introduce a dedicated FastNewObjectStub.

  port ba2077aac3a775523ca3fc9600fcf76f55e8d1c2 (r34136)

  original commit message:
  Move the already existing fast case for %NewObject into a dedicated
  FastNewObjectStub that we can utilize in places where we would otherwise
  fallback to %NewObject immediately, which is rather expensive.

  Also use FastNewObjectStub as the generic implementation of JSCreate,
  which should make constructor inlining based on SharedFunctionInfo (w/o
  specializing to a concrete closure) viable soon.

BUG=

Committed: https://crrev.com/4453164df714afa6fbb7cf75aefe8e02566984ff
Cr-Commit-Position: refs/heads/master@{#34182}

[zhengxing.li, 2016-02-22 01:57:11]

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

[zhengxing.li, 2016-02-22 01:57:12]

PTAL, thanks!

[Weiliang, 2016-02-22 02:23:41]

lgtm

[zhengxing.li, 2016-02-22 02:25:24]

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

[commit-bot: I haz the power, 2016-02-22 02:25:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1717203002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1717203002/1

[commit-bot: I haz the power, 2016-02-22 02:47:13]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-22 02:47:23]

Description was changed from

==========
X87: [stubs] Introduce a dedicated FastNewObjectStub.

  port ba2077aac3a775523ca3fc9600fcf76f55e8d1c2 (r34136)

  original commit message:
  Move the already existing fast case for %NewObject into a dedicated
  FastNewObjectStub that we can utilize in places where we would otherwise
  fallback to %NewObject immediately, which is rather expensive.

  Also use FastNewObjectStub as the generic implementation of JSCreate,
  which should make constructor inlining based on SharedFunctionInfo (w/o
  specializing to a concrete closure) viable soon.

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

to

==========
X87: [stubs] Introduce a dedicated FastNewObjectStub.

  port ba2077aac3a775523ca3fc9600fcf76f55e8d1c2 (r34136)

  original commit message:
  Move the already existing fast case for %NewObject into a dedicated
  FastNewObjectStub that we can utilize in places where we would otherwise
  fallback to %NewObject immediately, which is rather expensive.

  Also use FastNewObjectStub as the generic implementation of JSCreate,
  which should make constructor inlining based on SharedFunctionInfo (w/o
  specializing to a concrete closure) viable soon.

BUG=

Committed: https://crrev.com/4453164df714afa6fbb7cf75aefe8e02566984ff
Cr-Commit-Position: refs/heads/master@{#34182}
==========

[commit-bot: I haz the power, 2016-02-22 02:47:24]

Patchset 1 (id:??) landed as
https://crrev.com/4453164df714afa6fbb7cf75aefe8e02566984ff
Cr-Commit-Position: refs/heads/master@{#34182}