X87: [turbofan] Introduce Float64Pow and NumberPow operators.

X87: [turbofan] Introduce Float64Pow and NumberPow operators.

  port e607e12ea0a706a0b8cb109e95f923426094dc09 (r37323)

  original commit message:
  Introduce a new machine operator Float64Pow that for now is backed by
  the existing MathPowStub to start the unification of Math.pow, and at
  the same time address the main performance issue that TurboFan still has
  with the imaging-darkroom benchmark in Kraken.

  Also migrate the Math.pow builtin itself to a TurboFan builtin and
  remove a few hundred lines of hand-written platform code for special
  handling of the fullcodegen Math.pow version.

BUG=

Committed: https://crrev.com/727266fcb8b11becf58a298dcd909baa89d2b582
Cr-Commit-Position: refs/heads/master@{#37468}

[zhengxing.li, 2016-07-01 02:46:32]

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

[zhengxing.li, 2016-07-01 02:46:33]

PTAL, thanks!

[Weiliang, 2016-07-01 03:29:22]

lgtm

[zhengxing.li, 2016-07-01 03:30:34]

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

[commit-bot: I haz the power, 2016-07-01 03:30:45]

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, 2016-07-01 04:32:11]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-01 04:32:35]

Description was changed from

==========
X87: [turbofan] Introduce Float64Pow and NumberPow operators.

  port e607e12ea0a706a0b8cb109e95f923426094dc09 (r37323)

  original commit message:
  Introduce a new machine operator Float64Pow that for now is backed by
  the existing MathPowStub to start the unification of Math.pow, and at
  the same time address the main performance issue that TurboFan still has
  with the imaging-darkroom benchmark in Kraken.

  Also migrate the Math.pow builtin itself to a TurboFan builtin and
  remove a few hundred lines of hand-written platform code for special
  handling of the fullcodegen Math.pow version.

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

to

==========
X87: [turbofan] Introduce Float64Pow and NumberPow operators.

  port e607e12ea0a706a0b8cb109e95f923426094dc09 (r37323)

  original commit message:
  Introduce a new machine operator Float64Pow that for now is backed by
  the existing MathPowStub to start the unification of Math.pow, and at
  the same time address the main performance issue that TurboFan still has
  with the imaging-darkroom benchmark in Kraken.

  Also migrate the Math.pow builtin itself to a TurboFan builtin and
  remove a few hundred lines of hand-written platform code for special
  handling of the fullcodegen Math.pow version.

BUG=

Committed: https://crrev.com/727266fcb8b11becf58a298dcd909baa89d2b582
Cr-Commit-Position: refs/heads/master@{#37468}
==========

[commit-bot: I haz the power, 2016-07-01 04:32:36]

Patchset 1 (id:??) landed as
https://crrev.com/727266fcb8b11becf58a298dcd909baa89d2b582
Cr-Commit-Position: refs/heads/master@{#37468}