PPC/s390: [builtins] Unify most of the remaining Math builtins.

PPC/s390: [builtins] Unify most of the remaining Math builtins.

Port 0a0fe8fb8b06d5e90b082838739ebf44cab04028

Original commit message:

Import fdlibm versions of acos, acosh, asin and asinh, which are more
    precise and produce the same result across platforms (we were using
    libm versions for asin and acos so far, where both speed and precision
    depended on the operating system so far). Introduce appropriate TurboFan
    operators for these functions and use them both for inlining and for the
    generic builtin.

    Also migrate the Math.imul and Math.fround builtins to TurboFan builtins
    to ensure that their behavior is always exactly the same as the inlined
    TurboFan version (i.e. C++ truncation semantics for double to float
    don't necessarily meet the JavaScript semantics).

    For completeness, also migrate Math.sign, which can even get some nice
    love in TurboFan.

    Drive-by-fix: Some alpha-sorting on the Math related functions, and
    cleanup the list of Math intrinsics that we have to export via the
    native context currently.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=v8:3266, v8:3496, v8:3509, v8:3952, v8:5169, v8:5170, v8:5171, v8:5172
LOG=N

Committed: https://crrev.com/305d42c01022061faf50de0070ae0a6c4b00f739
Cr-Commit-Position: refs/heads/master@{#37539}

[JaideepBajwa, 2016-07-05 16:51:31]

PTAL

[john.yan, 2016-07-05 17:26:20]

lgtm

[JaideepBajwa, 2016-07-05 17:28:52]

The CQ bit was checked by bjaideep@ca.ibm.com

[commit-bot: I haz the power, 2016-07-05 17:28:58]

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, 2016-07-05 18:12:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-05 18:14:33]

Description was changed from

==========
PPC/s390: [builtins] Unify most of the remaining Math builtins.

Port 0a0fe8fb8b06d5e90b082838739ebf44cab04028

Original commit message:

Import fdlibm versions of acos, acosh, asin and asinh, which are more
    precise and produce the same result across platforms (we were using
    libm versions for asin and acos so far, where both speed and precision
    depended on the operating system so far). Introduce appropriate TurboFan
    operators for these functions and use them both for inlining and for the
    generic builtin.

    Also migrate the Math.imul and Math.fround builtins to TurboFan builtins
    to ensure that their behavior is always exactly the same as the inlined
    TurboFan version (i.e. C++ truncation semantics for double to float
    don't necessarily meet the JavaScript semantics).

    For completeness, also migrate Math.sign, which can even get some nice
    love in TurboFan.

    Drive-by-fix: Some alpha-sorting on the Math related functions, and
    cleanup the list of Math intrinsics that we have to export via the
    native context currently.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=v8:3266,v8:3496,v8:3509,v8:3952,v8:5169,v8:5170,v8:5171,v8:5172
LOG=N
==========

to

==========
PPC/s390: [builtins] Unify most of the remaining Math builtins.

Port 0a0fe8fb8b06d5e90b082838739ebf44cab04028

Original commit message:

Import fdlibm versions of acos, acosh, asin and asinh, which are more
    precise and produce the same result across platforms (we were using
    libm versions for asin and acos so far, where both speed and precision
    depended on the operating system so far). Introduce appropriate TurboFan
    operators for these functions and use them both for inlining and for the
    generic builtin.

    Also migrate the Math.imul and Math.fround builtins to TurboFan builtins
    to ensure that their behavior is always exactly the same as the inlined
    TurboFan version (i.e. C++ truncation semantics for double to float
    don't necessarily meet the JavaScript semantics).

    For completeness, also migrate Math.sign, which can even get some nice
    love in TurboFan.

    Drive-by-fix: Some alpha-sorting on the Math related functions, and
    cleanup the list of Math intrinsics that we have to export via the
    native context currently.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=v8:3266,v8:3496,v8:3509,v8:3952,v8:5169,v8:5170,v8:5171,v8:5172
LOG=N

Committed: https://crrev.com/305d42c01022061faf50de0070ae0a6c4b00f739
Cr-Commit-Position: refs/heads/master@{#37539}
==========

[commit-bot: I haz the power, 2016-07-05 18:14:34]

Patchset 1 (id:??) landed as
https://crrev.com/305d42c01022061faf50de0070ae0a6c4b00f739
Cr-Commit-Position: refs/heads/master@{#37539}