X87: [builtins] Introduce proper Float64Tan operator.

X87: [builtins] Introduce proper Float64Tan operator.

  port c87168bc8c76cd491f72eb847a962dec2e5ff1fd (r37087)

  original commit message:
  Import base::ieee754::tan() from fdlibm and introduce Float64Tan TurboFan
  operator based on that, similar to what we do for Float64Cos and Float64Sin.
  Rewrite Math.tan() as TurboFan builtin and use those operators to also
  inline Math.tan() into optimized TurboFan functions.

  Drive-by-fix: Kill the %_ConstructDouble intrinsics, and provide only
  the %ConstructDouble runtime entry for writing tests.

BUG=

Committed: https://crrev.com/d944015623582bf3c8f7e25fcb1e400a315311b9
Cr-Commit-Position: refs/heads/master@{#37313}

[zhengxing.li, 2016-06-28 05:54:33]

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

[zhengxing.li, 2016-06-28 05:54:33]

PTAL, thanks!

[Weiliang, 2016-06-28 07:12:29]

lgtm

[zhengxing.li, 2016-06-28 07:14:35]

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

[commit-bot: I haz the power, 2016-06-28 07:14:38]

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, 2016-06-28 07:38:58]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-28 07:40:35]

Description was changed from

==========
X87: [builtins] Introduce proper Float64Tan operator.

  port c87168bc8c76cd491f72eb847a962dec2e5ff1fd (r37087)

  original commit message:
  Import base::ieee754::tan() from fdlibm and introduce Float64Tan TurboFan
  operator based on that, similar to what we do for Float64Cos and Float64Sin.
  Rewrite Math.tan() as TurboFan builtin and use those operators to also
  inline Math.tan() into optimized TurboFan functions.

  Drive-by-fix: Kill the %_ConstructDouble intrinsics, and provide only
  the %ConstructDouble runtime entry for writing tests.

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

to

==========
X87: [builtins] Introduce proper Float64Tan operator.

  port c87168bc8c76cd491f72eb847a962dec2e5ff1fd (r37087)

  original commit message:
  Import base::ieee754::tan() from fdlibm and introduce Float64Tan TurboFan
  operator based on that, similar to what we do for Float64Cos and Float64Sin.
  Rewrite Math.tan() as TurboFan builtin and use those operators to also
  inline Math.tan() into optimized TurboFan functions.

  Drive-by-fix: Kill the %_ConstructDouble intrinsics, and provide only
  the %ConstructDouble runtime entry for writing tests.

BUG=

Committed: https://crrev.com/d944015623582bf3c8f7e25fcb1e400a315311b9
Cr-Commit-Position: refs/heads/master@{#37313}
==========

[commit-bot: I haz the power, 2016-06-28 07:40:36]

Patchset 1 (id:??) landed as
https://crrev.com/d944015623582bf3c8f7e25fcb1e400a315311b9
Cr-Commit-Position: refs/heads/master@{#37313}