X87: [turbofan] Prevent storing signalling NaNs into holey double arrays.

X87: [turbofan] Prevent storing signalling NaNs into holey double arrays.

  port 6470ddadf93594657acee02b5ce5459752928490 (r36950)

  original commit message:
  This introduces SilenceNaN operator, which makes sure that we only
  store quiet NaNs into holey arrays. We omit the NaN silencing code
  at instruction selection time if the input is an operation that
  cannot possibly produce signalling NaNs.

BUG=

Committed: https://crrev.com/d0607218a06afbb630b53e5218b5e3fe287c69e4
Cr-Commit-Position: refs/heads/master@{#37265}

[zhengxing.li, 2016-06-27 03:14:14]

zhengxing.li@intel.com changed reviewers:
+ chunyang.dai@intel.com, jarin@chromium.org, weiliang.lin@intel.com

[zhengxing.li, 2016-06-27 03:14:15]

PTAL, thanks!

[Weiliang, 2016-06-27 03:15:31]

lgtm

[zhengxing.li, 2016-06-27 03:16:27]

The CQ bit was checked by zhengxing.li@intel.com

[commit-bot: I haz the power, 2016-06-27 03:16:31]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-06-27 03:38:28]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-27 03:39:02]

Description was changed from

==========
X87: [turbofan] Prevent storing signalling NaNs into holey double arrays.

  port 6470ddadf93594657acee02b5ce5459752928490 (r36950)

  original commit message:
  This introduces SilenceNaN operator, which makes sure that we only
  store quiet NaNs into holey arrays. We omit the NaN silencing code
  at instruction selection time if the input is an operation that
  cannot possibly produce signalling NaNs.

BUG=
==========

to

==========
X87: [turbofan] Prevent storing signalling NaNs into holey double arrays.

  port 6470ddadf93594657acee02b5ce5459752928490 (r36950)

  original commit message:
  This introduces SilenceNaN operator, which makes sure that we only
  store quiet NaNs into holey arrays. We omit the NaN silencing code
  at instruction selection time if the input is an operation that
  cannot possibly produce signalling NaNs.

BUG=

Committed: https://crrev.com/d0607218a06afbb630b53e5218b5e3fe287c69e4
Cr-Commit-Position: refs/heads/master@{#37265}
==========

[commit-bot: I haz the power, 2016-06-27 03:39:03]

Patchset 1 (id:??) landed as
https://crrev.com/d0607218a06afbb630b53e5218b5e3fe287c69e4
Cr-Commit-Position: refs/heads/master@{#37265}