X87: [builtins] Introduce proper Float64Atan and Float64Atan2 operators.

X87: [builtins] Introduce proper Float64Atan and Float64Atan2 operators.

  port 89d8c57b9c3b29e7977b13f0a9eed6bd8fb6772d (r36916)

  original commit message:
  Import base::ieee754::atan() and base::ieee754::atan2() from fdlibm and
  introduce Float64Atan and Float64Atan2 TurboFan operators based on those,
  similar to what we already did for Float64Log and Float64Log1p. Rewrite
  Math.atan() and Math.atan2() as TurboFan builtin and use the operators
  to also inline Math.atan() and Math.atan2() into optimized TurboFan functions.

BUG=

Committed: https://crrev.com/4953b17c52df8ba6c9e07058e5dd0e3123f31481
Cr-Commit-Position: refs/heads/master@{#37262}

[zhengxing.li, 2016-06-27 02:08:02]

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

[zhengxing.li, 2016-06-27 02:08:03]

PTAL, thanks!

[Weiliang, 2016-06-27 02:10:54]

lgtm

[zhengxing.li, 2016-06-27 02:11:51]

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

[commit-bot: I haz the power, 2016-06-27 02:12:01]

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, 2016-06-27 02:37:02]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-27 02:37:35]

Description was changed from

==========
X87: [builtins] Introduce proper Float64Atan and Float64Atan2 operators.

  port 89d8c57b9c3b29e7977b13f0a9eed6bd8fb6772d (r36916)

  original commit message:
  Import base::ieee754::atan() and base::ieee754::atan2() from fdlibm and
  introduce Float64Atan and Float64Atan2 TurboFan operators based on those,
  similar to what we already did for Float64Log and Float64Log1p. Rewrite
  Math.atan() and Math.atan2() as TurboFan builtin and use the operators
  to also inline Math.atan() and Math.atan2() into optimized TurboFan functions.

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

to

==========
X87: [builtins] Introduce proper Float64Atan and Float64Atan2 operators.

  port 89d8c57b9c3b29e7977b13f0a9eed6bd8fb6772d (r36916)

  original commit message:
  Import base::ieee754::atan() and base::ieee754::atan2() from fdlibm and
  introduce Float64Atan and Float64Atan2 TurboFan operators based on those,
  similar to what we already did for Float64Log and Float64Log1p. Rewrite
  Math.atan() and Math.atan2() as TurboFan builtin and use the operators
  to also inline Math.atan() and Math.atan2() into optimized TurboFan functions.

BUG=

Committed: https://crrev.com/4953b17c52df8ba6c9e07058e5dd0e3123f31481
Cr-Commit-Position: refs/heads/master@{#37262}
==========

[commit-bot: I haz the power, 2016-06-27 02:37:36]

Patchset 1 (id:??) landed as
https://crrev.com/4953b17c52df8ba6c9e07058e5dd0e3123f31481
Cr-Commit-Position: refs/heads/master@{#37262}