X87: [builtins] Introduce proper Float64Exp operator.

X87: [builtins] Introduce proper Float64Exp operator.

  port d5f2ac5e3326f281cbe7ba57464a4b17a9938e37 (r37047)

  original commit message:
  Import base::ieee754::exp() from FreeBSD msun and introduce a Float64Exp
  TurboFan operator based on that, similar to what we do for Float64Log.
  Rewrite Math.exp() as TurboFan builtin and use that operator to also
  inline Math.exp() into optimized TurboFan functions.

BUG=

Committed: https://crrev.com/9714c98f6a84e6637b3cd2d6c7b3a59e25b33833
Cr-Commit-Position: refs/heads/master@{#37269}

[zhengxing.li, 2016-06-27 05:52:12]

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

[zhengxing.li, 2016-06-27 05:52:13]

PTAL, thanks!

[Weiliang, 2016-06-27 06:07:19]

lgtm

[zhengxing.li, 2016-06-27 06:08:40]

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

[commit-bot: I haz the power, 2016-06-27 06:08:42]

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 06:30:10]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-27 06:33:09]

Description was changed from

==========
X87: [builtins] Introduce proper Float64Exp operator.

  port d5f2ac5e3326f281cbe7ba57464a4b17a9938e37 (r37047)

  original commit message:
  Import base::ieee754::exp() from FreeBSD msun and introduce a Float64Exp
  TurboFan operator based on that, similar to what we do for Float64Log.
  Rewrite Math.exp() as TurboFan builtin and use that operator to also
  inline Math.exp() into optimized TurboFan functions.

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

to

==========
X87: [builtins] Introduce proper Float64Exp operator.

  port d5f2ac5e3326f281cbe7ba57464a4b17a9938e37 (r37047)

  original commit message:
  Import base::ieee754::exp() from FreeBSD msun and introduce a Float64Exp
  TurboFan operator based on that, similar to what we do for Float64Log.
  Rewrite Math.exp() as TurboFan builtin and use that operator to also
  inline Math.exp() into optimized TurboFan functions.

BUG=

Committed: https://crrev.com/9714c98f6a84e6637b3cd2d6c7b3a59e25b33833
Cr-Commit-Position: refs/heads/master@{#37269}
==========

[commit-bot: I haz the power, 2016-06-27 06:33:10]

Patchset 1 (id:??) landed as
https://crrev.com/9714c98f6a84e6637b3cd2d6c7b3a59e25b33833
Cr-Commit-Position: refs/heads/master@{#37269}