PPC: [turbofan] Change TruncateFloat32ToInt64 to TryTruncateFloat32ToInt64.

PPC: [turbofan] Change TruncateFloat32ToInt64 to TryTruncateFloat32ToInt64.

Port 28261daa47d406d73e40bf4afba16ee61f300089

Original commit message:
    This operator now provides a second output which indicates whether the
    conversion from float32 to int64 was successful or not. The second output
    returns 0 if the conversion fails, or something else if the conversion succeeds.

    The second output can be ignored, which means that the operator can be used the
    same as the original operator.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/99b8e7c88dc4b6ce3f32d7a502c76c305abc6a11
Cr-Commit-Position: refs/heads/master@{#32914}

[MTBrandyberry, 2015-12-16 19:27:05]

The CQ bit was checked by mbrandy@us.ibm.com to run a CQ dry run

[commit-bot: I haz the power, 2015-12-16 19:27:13]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1530273002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1530273002/1

[michael_dawson, 2015-12-16 19:28:50]

On 2015/12/16 19:27:13, commit-bot: I haz the power wrote:
> Dry run: CQ is trying da patch. Follow status at
>  https://chromium-cq-status.appspot.com/patch-status/1530273002/1
> View timeline at
>  https://chromium-cq-status.appspot.com/patch-timeline/1530273002/1

lgtm

[commit-bot: I haz the power, 2015-12-16 19:49:19]

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

[commit-bot: I haz the power, 2015-12-16 19:49:19]

Dry run: This issue passed the CQ dry run.

[MTBrandyberry, 2015-12-16 19:54:17]

The CQ bit was checked by mbrandy@us.ibm.com

[commit-bot: I haz the power, 2015-12-16 19:54:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1530273002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1530273002/1

[commit-bot: I haz the power, 2015-12-16 19:55:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-16 19:56:12]

Description was changed from

==========
PPC: [turbofan] Change TruncateFloat32ToInt64 to TryTruncateFloat32ToInt64.

Port 28261daa47d406d73e40bf4afba16ee61f300089

Original commit message:
    This operator now provides a second output which indicates whether the
    conversion from float32 to int64 was successful or not. The second output
    returns 0 if the conversion fails, or something else if the conversion
succeeds.

    The second output can be ignored, which means that the operator can be used
the
    same as the original operator.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=
==========

to

==========
PPC: [turbofan] Change TruncateFloat32ToInt64 to TryTruncateFloat32ToInt64.

Port 28261daa47d406d73e40bf4afba16ee61f300089

Original commit message:
    This operator now provides a second output which indicates whether the
    conversion from float32 to int64 was successful or not. The second output
    returns 0 if the conversion fails, or something else if the conversion
succeeds.

    The second output can be ignored, which means that the operator can be used
the
    same as the original operator.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/99b8e7c88dc4b6ce3f32d7a502c76c305abc6a11
Cr-Commit-Position: refs/heads/master@{#32914}
==========

[commit-bot: I haz the power, 2015-12-16 19:56:13]

Patchset 1 (id:??) landed as
https://crrev.com/99b8e7c88dc4b6ce3f32d7a502c76c305abc6a11
Cr-Commit-Position: refs/heads/master@{#32914}