MIPS64: [turbofan] Implemented the TruncateFloat32ToUint64 TurboFan operator.

MIPS64: [turbofan] Implemented the TruncateFloat32ToUint64 TurboFan operator.

Port 68cc0be2ad75c698d08d6672b69ad9649418cd9f

Original commit message:
The TruncateFloat32ToUint64 operator converts a float32 to an uint64 using
round-to-zero rounding mode. If the input value is outside uint64 range, then
the result depends on the architecture. I provide an implementation for x64 and
arm64.

BUG=

Committed: https://crrev.com/baae7a0333bd0f8d36049ccc6c8ea66920a68bcc
Cr-Commit-Position: refs/heads/master@{#32383}

[akos.palfi.imgtec, 2015-11-27 23:20:19]

akos.palfi@imgtec.com changed reviewers:
+ ahaas@chromium.org, alan.li@imgtec.com, balazs.kilvady@imgtec.com,
paul.lind@imgtec.com

[akos.palfi.imgtec, 2015-11-27 23:20:20]

PTAL.

[paul.l..., 2015-11-28 02:05:57]

LGTM (rs). Thanks!

[akos.palfi.imgtec, 2015-11-28 02:07:25]

The CQ bit was checked by akos.palfi@imgtec.com

[commit-bot: I haz the power, 2015-11-28 02:07:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1481093003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1481093003/1

[commit-bot: I haz the power, 2015-11-28 02:27:05]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-28 02:27:19]

Description was changed from

==========
MIPS64: [turbofan] Implemented the TruncateFloat32ToUint64 TurboFan operator.

Port 68cc0be2ad75c698d08d6672b69ad9649418cd9f

Original commit message:
The TruncateFloat32ToUint64 operator converts a float32 to an uint64 using
round-to-zero rounding mode. If the input value is outside uint64 range, then
the result depends on the architecture. I provide an implementation for x64 and
arm64.

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

to

==========
MIPS64: [turbofan] Implemented the TruncateFloat32ToUint64 TurboFan operator.

Port 68cc0be2ad75c698d08d6672b69ad9649418cd9f

Original commit message:
The TruncateFloat32ToUint64 operator converts a float32 to an uint64 using
round-to-zero rounding mode. If the input value is outside uint64 range, then
the result depends on the architecture. I provide an implementation for x64 and
arm64.

BUG=

Committed: https://crrev.com/baae7a0333bd0f8d36049ccc6c8ea66920a68bcc
Cr-Commit-Position: refs/heads/master@{#32383}
==========

[commit-bot: I haz the power, 2015-11-28 02:27:25]

Patchset 1 (id:??) landed as
https://crrev.com/baae7a0333bd0f8d36049ccc6c8ea66920a68bcc
Cr-Commit-Position: refs/heads/master@{#32383}