PPC64: [turbofan] Changed TruncateFloat64ToInt64 to TryTruncateFloat64ToInt64.

PPC64: [turbofan] Changed TruncateFloat64ToInt64 to TryTruncateFloat64ToInt64.

Port 95844d94f3336489403c7f2d70c6ea01a0cf3002

Original commit message:
    The new operator provides a second output which indicates whether the
    conversion from float64 to int64 was successful or not. The second
    output returns 0 if the conversion fails. If the conversion succeeds,
    then the second output is differs from 0.

    The second output can be ignored, which means that the operator can be
    used the same way 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/b9f92c15d6eda111392e9498dc9b81b6df12d1c5
Cr-Commit-Position: refs/heads/master@{#32724}

[MTBrandyberry, 2015-12-09 16:25:54]

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

[commit-bot: I haz the power, 2015-12-09 16:25:59]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1515603002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1515603002/1

[commit-bot: I haz the power, 2015-12-09 17:05:15]

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

[commit-bot: I haz the power, 2015-12-09 17:05:16]

Dry run: This issue passed the CQ dry run.

[john.yan, 2015-12-09 18:12:04]

lgtm

[MTBrandyberry, 2015-12-09 18:17:50]

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

[commit-bot: I haz the power, 2015-12-09 18:18:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1515603002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1515603002/1

[commit-bot: I haz the power, 2015-12-09 18:29:25]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-09 18:29:59]

Description was changed from

==========
PPC64: [turbofan] Changed TruncateFloat64ToInt64 to TryTruncateFloat64ToInt64.

Port 95844d94f3336489403c7f2d70c6ea01a0cf3002

Original commit message:
    The new operator provides a second output which indicates whether the
    conversion from float64 to int64 was successful or not. The second
    output returns 0 if the conversion fails. If the conversion succeeds,
    then the second output is differs from 0.

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

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

to

==========
PPC64: [turbofan] Changed TruncateFloat64ToInt64 to TryTruncateFloat64ToInt64.

Port 95844d94f3336489403c7f2d70c6ea01a0cf3002

Original commit message:
    The new operator provides a second output which indicates whether the
    conversion from float64 to int64 was successful or not. The second
    output returns 0 if the conversion fails. If the conversion succeeds,
    then the second output is differs from 0.

    The second output can be ignored, which means that the operator can be
    used the same way 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/b9f92c15d6eda111392e9498dc9b81b6df12d1c5
Cr-Commit-Position: refs/heads/master@{#32724}
==========

[commit-bot: I haz the power, 2015-12-09 18:30:00]

Patchset 1 (id:??) landed as
https://crrev.com/b9f92c15d6eda111392e9498dc9b81b6df12d1c5
Cr-Commit-Position: refs/heads/master@{#32724}