PPC: [turbofan] Change TruncateFloat32ToUint64 to TryTruncateFloat32ToUint64.

PPC: [turbofan] Change TruncateFloat32ToUint64 to TryTruncateFloat32ToUint64.

Port 97161a29eda804ea17ba127e78ddaecee0a259a9

Original commit message:
    TryTruncateFloat32ToUint64 converts a float32 to a uint64. Additionally it
    provides an optional second return value which indicates whether the conversion
    succeeded (i.e. float32 value was within uint64 range) or not.

    Additionally I fixed a bug on x64 and mips64 in the implementation of
    TryTruncateFloat64ToUint64. Cases where the input value was between -1 and 0
    were handled incorrectly.

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

Committed: https://crrev.com/9418a710c16ae29c244175a771e1e4d8e74ee4b6
Cr-Commit-Position: refs/heads/master@{#32919}

[michael_dawson, 2015-12-16 19:41:36]

On 2015/12/16 19:30:06, mtbrandyberry wrote:

lgtm

[MTBrandyberry, 2015-12-16 19:56:01]

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

[commit-bot: I haz the power, 2015-12-16 19:56:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1533613002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1533613002/1

[commit-bot: I haz the power, 2015-12-16 20:17:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-16 20:18:36]

Description was changed from

==========
PPC: [turbofan] Change TruncateFloat32ToUint64 to TryTruncateFloat32ToUint64.

Port 97161a29eda804ea17ba127e78ddaecee0a259a9

Original commit message:
    TryTruncateFloat32ToUint64 converts a float32 to a uint64. Additionally it
    provides an optional second return value which indicates whether the
conversion
    succeeded (i.e. float32 value was within uint64 range) or not.

    Additionally I fixed a bug on x64 and mips64 in the implementation of
    TryTruncateFloat64ToUint64. Cases where the input value was between -1 and 0
    were handled incorrectly.

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

to

==========
PPC: [turbofan] Change TruncateFloat32ToUint64 to TryTruncateFloat32ToUint64.

Port 97161a29eda804ea17ba127e78ddaecee0a259a9

Original commit message:
    TryTruncateFloat32ToUint64 converts a float32 to a uint64. Additionally it
    provides an optional second return value which indicates whether the
conversion
    succeeded (i.e. float32 value was within uint64 range) or not.

    Additionally I fixed a bug on x64 and mips64 in the implementation of
    TryTruncateFloat64ToUint64. Cases where the input value was between -1 and 0
    were handled incorrectly.

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

Committed: https://crrev.com/9418a710c16ae29c244175a771e1e4d8e74ee4b6
Cr-Commit-Position: refs/heads/master@{#32919}
==========

[commit-bot: I haz the power, 2015-12-16 20:18:37]

Patchset 1 (id:??) landed as
https://crrev.com/9418a710c16ae29c244175a771e1e4d8e74ee4b6
Cr-Commit-Position: refs/heads/master@{#32919}