[arm] Turn off the default NaN mode on arm.

[arm] Turn off the default NaN mode on arm.

The default NaN mode was originally used to identify holes in double
arrays. With (https://codereview.chromium.org/863633002/) signalling
NaNs are used for that, and the default NaN mode is not needed anymore.
Without the default NaN mode it is easier to satisfy the WebAssembly
spec which requires that quiet NaNs are preserved.

R=titzer@chromium.org, rodolph.perfetta@arm.com, bmeurer@chromium.org

Committed: https://crrev.com/5df9406a0708a779a51167c1700c1f87ec2ac3a3
Cr-Commit-Position: refs/heads/master@{#35526}

[Rodolph Perfetta (ARM), 2016-04-14 15:01:27]

lgtm

[Benedikt Meurer, 2016-04-14 18:35:37]

Nice, LGTM.

[ahaas, 2016-04-15 12:16:29]

The CQ bit was checked by ahaas@chromium.org

[ahaas, 2016-04-15 12:16:29]

The patchset sent to the CQ was uploaded after l-g-t-m from
bmeurer@chromium.org, rodolph.perfetta@arm.com
Link to the patchset: https://codereview.chromium.org/1884193003/#ps20001
(title: " ")

[commit-bot: I haz the power, 2016-04-15 12:16:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1884193003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1884193003/20001

[commit-bot: I haz the power, 2016-04-15 12:45:05]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-04-15 12:45:33]

Description was changed from

==========
[arm] Turn off the default NaN mode on arm.

The default NaN mode was originally used to identify holes in double
arrays. With (https://codereview.chromium.org/863633002/) signalling
NaNs are used for that, and the default NaN mode is not needed anymore.
Without the default NaN mode it is easier to satisfy the WebAssembly
spec which requires that quiet NaNs are preserved.

R=titzer@chromium.org, rodolph.perfetta@arm.com, bmeurer@chromium.org
==========

to

==========
[arm] Turn off the default NaN mode on arm.

The default NaN mode was originally used to identify holes in double
arrays. With (https://codereview.chromium.org/863633002/) signalling
NaNs are used for that, and the default NaN mode is not needed anymore.
Without the default NaN mode it is easier to satisfy the WebAssembly
spec which requires that quiet NaNs are preserved.

R=titzer@chromium.org, rodolph.perfetta@arm.com, bmeurer@chromium.org

Committed: https://crrev.com/5df9406a0708a779a51167c1700c1f87ec2ac3a3
Cr-Commit-Position: refs/heads/master@{#35526}
==========

[commit-bot: I haz the power, 2016-04-15 12:45:35]

Patchset 2 (id:??) landed as
https://crrev.com/5df9406a0708a779a51167c1700c1f87ec2ac3a3
Cr-Commit-Position: refs/heads/master@{#35526}