X87: [turbofan] Fix invalid comparison operator narrowing.

X87: [turbofan] Fix invalid comparison operator narrowing.

  port a758144329b7ddda258e41ea5d8abfca8595e34c (r38231)

  original commit message:
  When we narrow a signed32 comparison to uint8 or uint16 representation,
  we also need to change the condition to unsigned comparisons otherwise
  the comparison will be done on int16/int8 which interprets the narrowed
  bits wrong.

BUG=

Committed: https://crrev.com/b412b789d33bc314772b84d79cf35caba20d8b18
Cr-Commit-Position: refs/heads/master@{#38274}

[zhengxing.li, 2016-08-03 06:15:43]

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

[zhengxing.li, 2016-08-03 06:15:44]

PTAL, thanks!

[Weiliang, 2016-08-03 06:26:44]

lgtm

[zhengxing.li, 2016-08-03 06:38:03]

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

[commit-bot: I haz the power, 2016-08-03 06:38:05]

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, 2016-08-03 07:09:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-03 07:13:21]

Description was changed from

==========
X87: [turbofan] Fix invalid comparison operator narrowing.

  port a758144329b7ddda258e41ea5d8abfca8595e34c (r38231)

  original commit message:
  When we narrow a signed32 comparison to uint8 or uint16 representation,
  we also need to change the condition to unsigned comparisons otherwise
  the comparison will be done on int16/int8 which interprets the narrowed
  bits wrong.

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

to

==========
X87: [turbofan] Fix invalid comparison operator narrowing.

  port a758144329b7ddda258e41ea5d8abfca8595e34c (r38231)

  original commit message:
  When we narrow a signed32 comparison to uint8 or uint16 representation,
  we also need to change the condition to unsigned comparisons otherwise
  the comparison will be done on int16/int8 which interprets the narrowed
  bits wrong.

BUG=

Committed: https://crrev.com/b412b789d33bc314772b84d79cf35caba20d8b18
Cr-Commit-Position: refs/heads/master@{#38274}
==========

[commit-bot: I haz the power, 2016-08-03 07:13:22]

Patchset 1 (id:??) landed as
https://crrev.com/b412b789d33bc314772b84d79cf35caba20d8b18
Cr-Commit-Position: refs/heads/master@{#38274}