[builtins] Introduce proper Float64Atan and Float64Atan2 operators.

[builtins] Introduce proper Float64Atan and Float64Atan2 operators.

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.

R=yangguo@chromium.org
BUG=v8:5086, v8:5095
Committed: https://crrev.com/89d8c57b9c3b29e7977b13f0a9eed6bd8fb6772d
Cr-Commit-Position: refs/heads/master@{#36916}

[Benedikt Meurer, 2016-06-13 05:58:02]

bmeurer@chromium.org changed reviewers:
+ ahaas@chromium.org

[Benedikt Meurer, 2016-06-13 05:58:02]

Hey Yang,

Next chunk of Math.
Please take a look.

Thanks,
Benedikt

Andreas: FYI (wasm porting)

[Benedikt Meurer, 2016-06-13 05:58:12]

The CQ bit was checked by bmeurer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-06-13 05:58:18]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2065503002/1

[commit-bot: I haz the power, 2016-06-13 06:03:01]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-06-13 06:03:02]

Dry run: Try jobs failed on following builders:
  v8_win_compile_dbg on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_win_compile_dbg/builds/1...)

[Benedikt Meurer, 2016-06-13 06:40:49]

The CQ bit was checked by bmeurer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-06-13 06:40:58]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2065503002/20001

[commit-bot: I haz the power, 2016-06-13 07:01:47]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-06-13 07:01:47]

Dry run: This issue passed the CQ dry run.

[Yang, 2016-06-13 07:03:02]

lgtm

[Benedikt Meurer, 2016-06-13 07:03:12]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-06-13 07:03:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2065503002/20001

[commit-bot: I haz the power, 2016-06-13 07:06:57]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-06-13 07:08:24]

Description was changed from

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

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.

R=yangguo@chromium.org
BUG=v8:5086,v8:5095
==========

to

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

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.

R=yangguo@chromium.org
BUG=v8:5086,v8:5095

Committed: https://crrev.com/89d8c57b9c3b29e7977b13f0a9eed6bd8fb6772d
Cr-Commit-Position: refs/heads/master@{#36916}
==========

[commit-bot: I haz the power, 2016-06-13 07:08:25]

Patchset 2 (id:??) landed as
https://crrev.com/89d8c57b9c3b29e7977b13f0a9eed6bd8fb6772d
Cr-Commit-Position: refs/heads/master@{#36916}