S390: [wasm] Fixed float-to-int conversion tests.

S390: [wasm] Fixed float-to-int conversion tests.

port ac7f0e2b6183839e55136647f81d6c01ac1b93af

Original Commit Message:
   *) For all tests the input validation was incorrect, i.e. some values
   were considered invalid although they were valid. The problem was that
   values which are outside int range can get in range through truncation.

   *) Removed an assertion in the x64 code generation of
   TruncateFloat64ToUint32 which trapped on negative inputs.

   *) Introduced a new TF operator TruncateFloat32ToUint32 which does
   the same as ChangeFloat32ToUint32 but does not trap on negative inputs.

R=titzer@chromium.org, ahaas@chromium.org, joransiu@ca.ibm.com, mbrandy@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/652853daa643e7fb10dd36db92a2b01b960f5b91
Cr-Commit-Position: refs/heads/master@{#35207}

[john.yan, 2016-04-01 13:44:58]

PTAL

[JoranSiu, 2016-04-01 13:45:37]

On 2016/04/01 13:44:58, john.yan wrote:
> PTAL

lgtm

[john.yan, 2016-04-01 13:48:22]

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

[commit-bot: I haz the power, 2016-04-01 13:48:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1844053005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1844053005/1

[commit-bot: I haz the power, 2016-04-01 14:10:20]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-01 14:11:27]

Description was changed from

==========
S390: [wasm] Fixed float-to-int conversion tests.

port ac7f0e2b6183839e55136647f81d6c01ac1b93af

Original Commit Message:
   *) For all tests the input validation was incorrect, i.e. some values
   were considered invalid although they were valid. The problem was that
   values which are outside int range can get in range through truncation.

   *) Removed an assertion in the x64 code generation of
   TruncateFloat64ToUint32 which trapped on negative inputs.

   *) Introduced a new TF operator TruncateFloat32ToUint32 which does
   the same as ChangeFloat32ToUint32 but does not trap on negative inputs.

R=titzer@chromium.org, ahaas@chromium.org, joransiu@ca.ibm.com,
mbrandy@us.ibm.com, michael_dawson@ca.ibm.com
BUG=
==========

to

==========
S390: [wasm] Fixed float-to-int conversion tests.

port ac7f0e2b6183839e55136647f81d6c01ac1b93af

Original Commit Message:
   *) For all tests the input validation was incorrect, i.e. some values
   were considered invalid although they were valid. The problem was that
   values which are outside int range can get in range through truncation.

   *) Removed an assertion in the x64 code generation of
   TruncateFloat64ToUint32 which trapped on negative inputs.

   *) Introduced a new TF operator TruncateFloat32ToUint32 which does
   the same as ChangeFloat32ToUint32 but does not trap on negative inputs.

R=titzer@chromium.org, ahaas@chromium.org, joransiu@ca.ibm.com,
mbrandy@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/652853daa643e7fb10dd36db92a2b01b960f5b91
Cr-Commit-Position: refs/heads/master@{#35207}
==========

[commit-bot: I haz the power, 2016-04-01 14:11:28]

Patchset 1 (id:??) landed as
https://crrev.com/652853daa643e7fb10dd36db92a2b01b960f5b91
Cr-Commit-Position: refs/heads/master@{#35207}